/* roulang page: index */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition);
        }

        a:hover {
            color: var(--wh-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
        }

        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部导航 */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }

        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }

        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }

        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }

        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }

        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }

        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }

        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }

        .wh-nav-link:hover {
            color: var(--wh-accent);
        }

        .wh-nav-link:hover::after {
            width: 100%;
        }

        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }

        .wh-nav-link.active::after {
            width: 100%;
        }

        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }

        .wh-nav-logo a {
            display: inline-block;
        }

        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }

        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }

        .wh-nav-mobile {
            display: none;
        }

        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
        }

        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }

        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }

        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }

        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }

        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }

        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }

        .wh-navbar-mobile .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
            top: 8px;
            transform: rotate(45deg);
            box-shadow: none;
        }

        .wh-navbar-mobile .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
            bottom: 8px;
            transform: rotate(-45deg);
        }

        .wh-mobile-menu {
            background-color: var(--wh-primary-dark);
            padding: 20px 24px;
            border-radius: 0 0 12px 12px;
        }

        .wh-mobile-menu .wh-nav-link {
            color: var(--wh-text-inverse);
            padding: 10px 0;
            display: block;
            font-size: 16px;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
        }

        .wh-mobile-menu .wh-nav-link:last-child {
            border-bottom: none;
        }

        .wh-mobile-menu .wh-nav-link:hover {
            color: var(--wh-accent);
        }

        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
        }

        .wh-mobile-menu .wh-nav-link::after {
            display: none;
        }

        @media (min-width: 992px) {
            .wh-nav-desktop {
                display: flex;
            }
            .wh-nav-mobile {
                display: none;
            }
        }

        @media (max-width: 991px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-navbar-mobile .navbar-brand {
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .wh-navbar-mobile .wh-logo-text {
                font-size: 17px;
            }
            .wh-navbar-mobile .wh-logo-text span {
                font-size: 11px;
            }
        }

        /* Hero */
        .wh-hero {
            position: relative;
            min-height: 560px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            display: flex;
            align-items: center;
            padding: 80px 0;
            overflow: hidden;
        }

        .wh-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 24, 34, 0.75) 0%, rgba(18, 32, 47, 0.55) 50%, rgba(13, 24, 34, 0.82) 100%);
            z-index: 1;
        }

        .wh-hero-content {
            position: relative;
            z-index: 2;
            color: var(--wh-text-inverse);
            max-width: 640px;
        }

        .wh-hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .wh-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: rgba(200, 164, 77, 0.18);
            color: var(--wh-accent);
            border: 1px solid rgba(200, 164, 77, 0.35);
            border-radius: var(--wh-radius-badge);
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.3px;
            backdrop-filter: blur(4px);
        }

        .wh-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 20px;
            color: var(--wh-text-inverse);
            letter-spacing: 0.5px;
        }

        .wh-hero-desc {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(245, 244, 240, 0.85);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .wh-hero-qualification {
            background: rgba(13, 24, 34, 0.6);
            border-left: 3px solid var(--wh-accent);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin-bottom: 32px;
            backdrop-filter: blur(6px);
        }

        .wh-hero-qualification p {
            font-size: 14px;
            color: rgba(245, 244, 240, 0.8);
            margin: 0;
            line-height: 1.7;
        }

        .wh-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .wh-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--wh-radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--wh-transition);
            text-align: center;
            line-height: 1.5;
            white-space: nowrap;
        }

        .wh-btn-primary {
            background-color: var(--wh-accent);
            color: var(--wh-primary);
        }

        .wh-btn-primary:hover {
            background-color: var(--wh-accent-hover);
            color: var(--wh-text-inverse);
            box-shadow: var(--wh-shadow-accent);
            transform: translateY(-2px);
        }

        .wh-btn-outline-light {
            background: transparent;
            border: 1.5px solid rgba(245, 244, 240, 0.7);
            color: var(--wh-text-inverse);
        }

        .wh-btn-outline-light:hover {
            background-color: var(--wh-text-inverse);
            color: var(--wh-primary);
            border-color: var(--wh-text-inverse);
            transform: translateY(-2px);
        }

        .wh-btn-outline-dark {
            background: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
        }

        .wh-btn-outline-dark:hover {
            background-color: var(--wh-primary);
            color: var(--wh-text-inverse);
            border-color: var(--wh-primary);
            transform: translateY(-2px);
        }

        .wh-btn-text {
            background: none;
            border: none;
            color: var(--wh-accent);
            padding: 4px 0;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--wh-transition);
        }

        .wh-btn-text:hover {
            text-decoration: underline;
            color: var(--wh-accent-hover);
        }

        .wh-btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        /* 通用板块 */
        .wh-section {
            padding: var(--wh-section-padding) 0;
        }

        .wh-section-dark {
            background-color: var(--wh-primary);
            color: var(--wh-text-inverse);
        }

        .wh-section-dark .wh-section-title {
            color: var(--wh-text-inverse);
        }

        .wh-section-dark .wh-section-subtitle {
            color: rgba(245, 244, 240, 0.7);
        }

        .wh-section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--wh-primary);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .wh-section-subtitle {
            font-size: 16px;
            color: var(--wh-text-secondary);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 680px;
        }

        .wh-section-header {
            margin-bottom: 40px;
        }

        .wh-section-header.text-center {
            text-align: center;
        }

        .wh-section-header.text-center .wh-section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* 卡片 */
        .wh-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            overflow: hidden;
            transition: all var(--wh-transition);
            height: 100%;
        }

        .wh-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.45);
        }

        .wh-card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: var(--wh-radius-card) var(--wh-radius-card) 0 0;
        }

        .wh-card-body {
            padding: 22px 24px;
        }

        .wh-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .wh-card-text {
            font-size: 14px;
            color: var(--wh-text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
        }

        /* 服务轨道 */
        .wh-track {
            overflow-x: auto;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--wh-accent) var(--wh-border);
            -webkit-overflow-scrolling: touch;
        }

        .wh-track::-webkit-scrollbar {
            height: 6px;
        }

        .wh-track::-webkit-scrollbar-track {
            background: var(--wh-border);
            border-radius: 3px;
        }

        .wh-track::-webkit-scrollbar-thumb {
            background: var(--wh-accent);
            border-radius: 3px;
        }

        .wh-track-inner {
            display: flex;
            gap: 20px;
            min-width: max-content;
        }

        .wh-track-card {
            width: 280px;
            flex-shrink: 0;
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            overflow: hidden;
            transition: all var(--wh-transition);
        }

        .wh-track-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.45);
        }

        .wh-track-card .wh-card-image {
            aspect-ratio: 16 / 9;
        }

        /* 服务条目 */
        .wh-service-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .wh-service-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--wh-border);
            font-size: 15px;
            line-height: 1.75;
            color: var(--wh-text);
        }

        .wh-service-list li:last-child {
            border-bottom: none;
        }

        .wh-service-list .wh-service-marker {
            flex-shrink: 0;
            width: 10px;
            height: 10px;
            background-color: var(--wh-accent);
            border-radius: 2px;
            margin-top: 8px;
        }

        /* 数据区 */
        .wh-stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .wh-stat-item {
            text-align: center;
            background: rgba(245, 244, 240, 0.06);
            border: 1px solid rgba(200, 164, 77, 0.2);
            border-radius: var(--wh-radius-card);
            padding: 32px 20px;
            transition: all var(--wh-transition);
        }

        .wh-stat-item:hover {
            background: rgba(245, 244, 240, 0.1);
            border-color: rgba(200, 164, 77, 0.4);
            transform: translateY(-3px);
        }

        .wh-stat-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--wh-accent);
            line-height: 1.2;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .wh-stat-label {
            font-size: 14px;
            color: rgba(245, 244, 240, 0.75);
            line-height: 1.6;
        }

        /* 图文交错 */
        .wh-media-row {
            display: flex;
            align-items: center;
            gap: 40px;
            margin-bottom: 48px;
        }

        .wh-media-row:last-child {
            margin-bottom: 0;
        }

        .wh-media-row.wh-media-reverse {
            flex-direction: row-reverse;
        }

        .wh-media-image {
            flex: 1;
            min-width: 0;
            border-radius: var(--wh-radius-card);
            overflow: hidden;
            border: 1px solid var(--wh-border);
        }

        .wh-media-image img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--wh-radius-card);
            transition: transform 0.4s ease;
        }

        .wh-media-image:hover img {
            transform: scale(1.03);
        }

        .wh-media-content {
            flex: 1;
            min-width: 0;
        }

        .wh-media-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .wh-media-content p {
            font-size: 15px;
            color: var(--wh-text-secondary);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        /* 案例卡片 */
        .wh-case-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            overflow: hidden;
            transition: all var(--wh-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .wh-case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.45);
        }

        .wh-case-card .wh-card-image {
            aspect-ratio: 16 / 10;
        }

        .wh-case-card .wh-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .wh-case-tag {
            display: inline-flex;
            align-items: center;
            background-color: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            border-radius: var(--wh-radius-badge);
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        /* 新闻列表 */
        .wh-news-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .wh-news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--wh-border);
            align-items: flex-start;
        }

        .wh-news-item:last-child {
            border-bottom: none;
        }

        .wh-news-date {
            flex-shrink: 0;
            text-align: center;
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            border-radius: 8px;
            padding: 10px 16px;
            min-width: 72px;
        }

        .wh-news-date .wh-news-day {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.2;
            display: block;
            color: var(--wh-accent);
        }

        .wh-news-date .wh-news-month {
            font-size: 12px;
            color: rgba(245, 244, 240, 0.7);
            letter-spacing: 0.5px;
        }

        .wh-news-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--wh-primary);
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .wh-news-content p {
            font-size: 14px;
            color: var(--wh-text-secondary);
            margin-bottom: 6px;
            line-height: 1.7;
        }

        .wh-news-content .wh-btn-text {
            font-size: 13px;
        }

        /* FAQ */
        .wh-accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .wh-accordion-item {
            background: var(--wh-bg);
            border-radius: 10px;
            overflow: hidden;
            transition: all var(--wh-transition);
        }

        .wh-accordion-item.wh-accordion-active {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            box-shadow: var(--wh-shadow-card);
        }

        .wh-accordion-header {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--wh-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            transition: all var(--wh-transition);
        }

        .wh-accordion-header:hover {
            color: var(--wh-accent);
        }

        .wh-accordion-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: transform var(--wh-transition);
        }

        .wh-accordion-icon::before,
        .wh-accordion-icon::after {
            content: '';
            position: absolute;
            background-color: var(--wh-accent);
            border-radius: 2px;
            transition: all var(--wh-transition);
        }

        .wh-accordion-icon::before {
            top: 50%;
            left: 0;
            right: 0;
            height: 2px;
            transform: translateY(-50%);
        }

        .wh-accordion-icon::after {
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            transform: translateX(-50%);
        }

        .wh-accordion-active .wh-accordion-icon::after {
            transform: translateX(-50%) rotate(90deg);
            opacity: 0;
        }

        .wh-accordion-body {
            padding: 0 20px 20px;
            font-size: 14px;
            color: var(--wh-text-secondary);
            line-height: 1.8;
            display: none;
        }

        .wh-accordion-active .wh-accordion-body {
            display: block;
        }

        /* CTA 区域 */
        .wh-cta {
            background: linear-gradient(135deg, var(--wh-primary-dark) 0%, var(--wh-primary) 100%);
            color: var(--wh-text-inverse);
            border-radius: 16px;
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
        }

        .wh-cta::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(200, 164, 77, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .wh-cta h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.4;
            color: var(--wh-text-inverse);
        }

        .wh-cta p {
            font-size: 15px;
            color: rgba(245, 244, 240, 0.8);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .wh-cta .wh-btn-primary {
            background-color: var(--wh-accent);
            color: var(--wh-primary);
        }

        /* 表单 */
        .wh-form-card {
            background: var(--wh-card);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            border: 1px solid var(--wh-border);
            padding: 32px;
        }

        .wh-form-group {
            margin-bottom: 20px;
        }

        .wh-form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--wh-primary);
            margin-bottom: 8px;
        }

        .wh-form-input,
        .wh-form-select,
        .wh-form-textarea {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            border: 1px solid var(--wh-border-input);
            border-radius: var(--wh-radius-btn);
            background: var(--wh-card);
            color: var(--wh-text);
            transition: all var(--wh-transition);
            appearance: none;
            -webkit-appearance: none;
        }

        .wh-form-input:focus,
        .wh-form-select:focus,
        .wh-form-textarea:focus {
            outline: none;
            border-color: var(--wh-accent);
            box-shadow: 0 0 0 3px rgba(200, 164, 77, 0.15);
        }

        .wh-form-textarea {
            min-height: 120px;
            resize: vertical;
        }

        .wh-form-select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235F5B52' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 40px;
        }

        /* 页脚 */
        .wh-footer {
            background-color: var(--wh-primary-dark);
            color: var(--wh-text-muted);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .wh-footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: space-between;
            margin-bottom: 36px;
        }

        .wh-footer-brand {
            max-width: 320px;
        }

        .wh-footer-brand .wh-logo-text {
            color: var(--wh-text-inverse);
            margin-bottom: 10px;
        }

        .wh-footer-brand p {
            font-size: 13px;
            color: var(--wh-text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .wh-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        .wh-footer-links a {
            color: rgba(232, 230, 224, 0.85);
            transition: color var(--wh-transition);
        }

        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }

        .wh-footer-bottom {
            border-top: 1px solid rgba(245, 244, 240, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--wh-text-muted);
        }

        .wh-footer-bottom a {
            color: rgba(232, 230, 224, 0.85);
            transition: color var(--wh-transition);
        }

        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .wh-section {
                padding: var(--wh-section-padding-mobile) 0;
            }
            .wh-hero {
                min-height: 420px;
                padding: 52px 0;
            }
            .wh-hero h1 {
                font-size: 30px;
            }
            .wh-hero-desc {
                font-size: 15px;
            }
            .wh-stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .wh-stat-number {
                font-size: 32px;
            }
            .wh-media-row {
                flex-direction: column;
                gap: 24px;
            }
            .wh-media-row.wh-media-reverse {
                flex-direction: column;
            }
            .wh-cta {
                padding: 36px 28px;
            }
            .wh-cta h2 {
                font-size: 22px;
            }
            .wh-section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 575px) {
            :root {
                --wh-section-padding: 40px;
                --wh-section-padding-mobile: 32px;
            }
            .wh-hero {
                min-height: 340px;
                padding: 36px 0;
            }
            .wh-hero h1 {
                font-size: 24px;
                line-height: 1.4;
            }
            .wh-hero-desc {
                font-size: 14px;
                line-height: 1.7;
            }
            .wh-hero-qualification {
                padding: 12px 14px;
            }
            .wh-hero-qualification p {
                font-size: 12px;
            }
            .wh-badge {
                font-size: 11px;
                padding: 4px 10px;
            }
            .wh-hero-actions {
                gap: 10px;
            }
            .wh-btn {
                padding: 10px 20px;
                font-size: 14px;
                width: 100%;
            }
            .wh-stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .wh-stat-item {
                padding: 20px 12px;
            }
            .wh-stat-number {
                font-size: 26px;
            }
            .wh-stat-label {
                font-size: 12px;
            }
            .wh-news-item {
                flex-direction: column;
                gap: 10px;
            }
            .wh-news-date {
                min-width: auto;
                display: inline-flex;
                align-items: center;
                gap: 6px;
                padding: 6px 12px;
            }
            .wh-news-date .wh-news-day {
                font-size: 16px;
                display: inline;
            }
            .wh-news-date .wh-news-month {
                font-size: 11px;
            }
            .wh-cta {
                padding: 24px 20px;
                border-radius: 12px;
            }
            .wh-cta h2 {
                font-size: 19px;
            }
            .wh-form-card {
                padding: 20px 16px;
            }
            .wh-footer {
                padding: 32px 0 16px;
            }
            .wh-footer-top {
                flex-direction: column;
                gap: 20px;
            }
            .wh-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
                font-size: 12px;
            }
            .wh-track-card {
                width: 240px;
            }
            .wh-section-title {
                font-size: 21px;
            }
            .wh-section-subtitle {
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition), box-shadow var(--wh-transition);
        }
        a:hover {
            color: var(--wh-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        /* 顶部导航 */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }
        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }
        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }
        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }
        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }
        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }
        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }
        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }
        .wh-nav-link:hover {
            color: var(--wh-accent);
        }
        .wh-nav-link:hover::after {
            width: 100%;
        }
        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }
        .wh-nav-link.active::after {
            width: 100%;
        }
        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }
        .wh-nav-logo a {
            display: inline-block;
        }
        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }
        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }
        .wh-nav-mobile {
            display: none;
        }
        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
        }
        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }
        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }
        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }
        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }
        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }
        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }
        .wh-mobile-menu {
            background-color: var(--wh-primary);
            padding: 20px 24px;
            border-radius: 0 0 12px 12px;
        }
        .wh-mobile-menu .wh-nav-link {
            color: var(--wh-text-inverse);
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 15px;
        }
        .wh-mobile-menu .wh-nav-link:hover {
            color: var(--wh-accent);
        }
        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
        }
        .wh-navbar-mobile .navbar-brand {
            font-size: 16px;
        }
        /* 面包屑 */
        .wh-breadcrumb-wrap {
            background: transparent;
            padding: 24px 0 0;
        }
        .wh-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--wh-text-secondary);
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .wh-breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .wh-breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--wh-border);
            margin-left: 4px;
        }
        .wh-breadcrumb a {
            color: var(--wh-text-secondary);
        }
        .wh-breadcrumb a:hover {
            color: var(--wh-accent);
        }
        .wh-breadcrumb .current {
            color: var(--wh-text);
            font-weight: 500;
        }
        /* 页面标题区 */
        .wh-cat-hero {
            padding: 36px 0 24px;
        }
        .wh-cat-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--wh-primary);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .wh-cat-hero .lead {
            font-size: 16px;
            color: var(--wh-text-secondary);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .wh-cat-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--wh-text-secondary);
        }
        .wh-cat-meta .badge-wh {
            background-color: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            border-radius: var(--wh-radius-badge);
            padding: 4px 10px;
            font-weight: 500;
        }
        /* 板块基础 */
        .wh-section {
            padding: var(--wh-section-padding) 0;
        }
        .wh-section-sm {
            padding: 32px 0;
        }
        .wh-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .wh-section-subtitle {
            font-size: 16px;
            color: var(--wh-text-secondary);
            line-height: 1.8;
            max-width: 720px;
        }
        /* 卡片网格 - 方案卡片 */
        .wh-solution-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            overflow: hidden;
            box-shadow: var(--wh-shadow-card);
            transition: transform var(--wh-transition), box-shadow var(--wh-transition), border-color var(--wh-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .wh-solution-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.5);
        }
        .wh-solution-card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .wh-solution-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .wh-solution-card:hover .wh-solution-card-img img {
            transform: scale(1.04);
        }
        .wh-solution-card-num {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(18, 32, 47, 0.85);
            color: var(--wh-accent);
            font-weight: 700;
            font-size: 14px;
            padding: 4px 12px;
            border-radius: var(--wh-radius-badge);
            letter-spacing: 0.5px;
        }
        .wh-solution-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .wh-solution-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .wh-solution-card-body p {
            font-size: 14px;
            color: var(--wh-text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .wh-solution-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .wh-tag {
            background: rgba(200, 164, 77, 0.12);
            color: var(--wh-copper);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--wh-radius-badge);
        }
        .wh-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: var(--wh-radius-btn);
            transition: all var(--wh-transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.5;
        }
        .wh-btn:focus {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
        }
        .wh-btn-primary {
            background: var(--wh-accent);
            color: var(--wh-primary);
        }
        .wh-btn-primary:hover {
            background: var(--wh-accent-hover);
            color: var(--wh-text-inverse);
            box-shadow: var(--wh-shadow-accent);
        }
        .wh-btn-outline {
            background: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
        }
        .wh-btn-outline:hover {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
        }
        .wh-btn-text {
            color: var(--wh-accent);
            background: transparent;
            padding: 6px 0;
            font-weight: 500;
        }
        .wh-btn-text:hover {
            text-decoration: underline;
            color: var(--wh-accent-hover);
        }
        .wh-btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        /* 深层内容区 */
        .wh-deep-block {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            border-radius: var(--wh-radius-card);
            padding: 48px 44px;
            position: relative;
            overflow: hidden;
        }
        .wh-deep-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--wh-accent);
        }
        .wh-deep-block h2 {
            color: var(--wh-text-inverse);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 18px;
            line-height: 1.4;
        }
        .wh-deep-block p {
            color: #C0BEB8;
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 16px;
            max-width: 900px;
        }
        .wh-deep-block .highlight {
            color: var(--wh-accent);
            font-weight: 600;
        }
        /* CTA区 */
        .wh-cta-section {
            background: var(--wh-primary);
            padding: 56px 0;
        }
        .wh-cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .wh-cta-box h2 {
            color: var(--wh-text-inverse);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .wh-cta-box p {
            color: #C0BEB8;
            font-size: 15px;
            margin-bottom: 0;
            max-width: 560px;
        }
        .wh-cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .wh-cta-actions .wh-btn-primary {
            background: var(--wh-accent);
            color: var(--wh-primary);
        }
        .wh-cta-actions .wh-btn-primary:hover {
            background: var(--wh-accent-hover);
            color: var(--wh-text-inverse);
        }
        .wh-cta-actions .wh-btn-outline {
            border-color: var(--wh-text-inverse);
            color: var(--wh-text-inverse);
        }
        .wh-cta-actions .wh-btn-outline:hover {
            background: var(--wh-text-inverse);
            color: var(--wh-primary);
        }
        /* 页脚 */
        .wh-footer {
            background: var(--wh-primary-dark);
            padding: 48px 0 24px;
            color: var(--wh-text-muted);
            font-size: 14px;
        }
        .wh-footer-top {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .wh-footer-brand {
            max-width: 320px;
        }
        .wh-footer-brand .wh-logo-text {
            color: var(--wh-text-inverse);
            font-size: 18px;
        }
        .wh-footer-brand .wh-logo-text span {
            color: var(--wh-accent);
            font-size: 11px;
        }
        .wh-footer-brand p {
            color: var(--wh-text-muted);
            font-size: 13px;
            line-height: 1.7;
            margin-top: 12px;
        }
        .wh-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: flex-start;
        }
        .wh-footer-links a {
            color: #E8E6E0;
            font-size: 13px;
            transition: color var(--wh-transition);
        }
        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }
        .wh-footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: var(--wh-text-muted);
        }
        .wh-footer-bottom a {
            color: #E8E6E0;
        }
        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }
        /* 响应式 */
        @media (max-width: 991.98px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-section {
                padding: var(--wh-section-padding-mobile) 0;
            }
            .wh-cat-hero h1 {
                font-size: 28px;
            }
            .wh-solution-card-img {
                height: 180px;
            }
            .wh-deep-block {
                padding: 32px 24px;
            }
            .wh-cta-box {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 575.98px) {
            .wh-section {
                padding: 32px 0;
            }
            .wh-cat-hero {
                padding: 24px 0 16px;
            }
            .wh-cat-hero h1 {
                font-size: 24px;
            }
            .wh-solution-card-img {
                height: 160px;
            }
            .wh-solution-card-body {
                padding: 16px 18px 18px;
            }
            .wh-solution-card-body h3 {
                font-size: 17px;
            }
            .wh-deep-block {
                padding: 24px 18px;
            }
            .wh-deep-block h2 {
                font-size: 22px;
            }
            .wh-footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .wh-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .wh-cta-box h2 {
                font-size: 22px;
            }
        }

/* roulang page: category1 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition);
        }
        a:hover {
            color: var(--wh-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ 顶部导航 ============ */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }
        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }

        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }
        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }
        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }
        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }
        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }
        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }
        .wh-nav-link:hover {
            color: var(--wh-accent);
        }
        .wh-nav-link:hover::after {
            width: 100%;
        }
        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }
        .wh-nav-link.active::after {
            width: 100%;
        }

        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }
        .wh-nav-logo a {
            display: inline-block;
        }
        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }
        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }

        .wh-nav-mobile {
            display: none;
        }
        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
            padding: 0;
        }
        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }
        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }
        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }
        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }
        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }
        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }

        .wh-mobile-menu {
            background-color: var(--wh-primary);
            padding: 16px 20px;
            border-radius: 0 0 12px 12px;
        }
        .wh-mobile-menu .wh-nav-link {
            display: block;
            color: var(--wh-text-inverse);
            font-size: 16px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
        }
        .wh-mobile-menu .wh-nav-link:last-child {
            border-bottom: none;
        }
        .wh-mobile-menu .wh-nav-link:hover,
        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
        }

        /* ============ 按钮 ============ */
        .wh-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--wh-radius-btn);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            border: none;
            transition: all var(--wh-transition);
            text-align: center;
        }
        .wh-btn-primary {
            background: var(--wh-accent);
            color: var(--wh-primary);
        }
        .wh-btn-primary:hover,
        .wh-btn-primary:focus {
            background: var(--wh-accent-hover);
            color: #fff;
            box-shadow: var(--wh-shadow-accent);
            outline: none;
        }
        .wh-btn-primary:focus-visible {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
        }
        .wh-btn-secondary {
            background: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
        }
        .wh-btn-secondary:hover,
        .wh-btn-secondary:focus {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            outline: none;
        }
        .wh-btn-secondary:focus-visible {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
        }
        .wh-btn-text {
            background: none;
            border: none;
            color: var(--wh-accent);
            font-weight: 500;
            padding: 6px 0;
            position: relative;
        }
        .wh-btn-text::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: var(--wh-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--wh-transition);
        }
        .wh-btn-text:hover::after {
            transform: scaleX(1);
        }
        .wh-btn-text:focus-visible {
            outline: 2px solid var(--wh-accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

        /* ============ 面包屑 ============ */
        .wh-breadcrumb-wrapper {
            background: var(--wh-card);
            border-bottom: 1px solid var(--wh-border);
            padding: 14px 0;
        }
        .wh-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: var(--wh-text-secondary);
        }
        .wh-breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .wh-breadcrumb li + li::before {
            content: '/';
            color: var(--wh-border);
            margin-right: 8px;
            font-size: 13px;
        }
        .wh-breadcrumb a {
            color: var(--wh-text-secondary);
            transition: color var(--wh-transition);
        }
        .wh-breadcrumb a:hover {
            color: var(--wh-accent);
        }
        .wh-breadcrumb .active {
            color: var(--wh-accent);
            font-weight: 500;
        }

        /* ============ 页面头部 ============ */
        .wh-page-header {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            padding: 48px 0;
        }
        .wh-page-header h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--wh-text-inverse);
        }
        .wh-page-header .wh-page-subtitle {
            font-size: 16px;
            color: rgba(245, 244, 240, 0.75);
            max-width: 680px;
            line-height: 1.8;
        }
        .wh-page-header .wh-page-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(200, 164, 77, 0.18);
            color: var(--wh-accent);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: var(--wh-radius-badge);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        /* ============ 列表主区 ============ */
        .wh-list-section {
            padding: 48px 0 72px;
        }
        .wh-list-item {
            display: flex;
            gap: 20px;
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            padding: 18px;
            margin-bottom: 20px;
            box-shadow: var(--wh-shadow-card);
            transition: all var(--wh-transition);
            overflow: hidden;
        }
        .wh-list-item:hover {
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.45);
            transform: translateY(-2px);
        }
        .wh-list-item-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 130px;
            border-radius: 8px;
            overflow: hidden;
            background: var(--wh-bg);
        }
        .wh-list-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .wh-list-item:hover .wh-list-item-thumb img {
            transform: scale(1.04);
        }
        .wh-list-item-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-width: 0;
        }
        .wh-list-item-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--wh-primary);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color var(--wh-transition);
        }
        .wh-list-item-title:hover {
            color: var(--wh-accent);
        }
        .wh-list-item-desc {
            font-size: 14px;
            color: var(--wh-text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .wh-list-item-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }
        .wh-list-item-date {
            font-size: 13px;
            color: var(--wh-text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .wh-list-item-date i {
            font-size: 13px;
            color: var(--wh-accent);
        }
        .wh-list-item-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--wh-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--wh-transition);
        }
        .wh-list-item-link i {
            font-size: 12px;
            transition: transform var(--wh-transition);
        }
        .wh-list-item-link:hover {
            color: var(--wh-accent-hover);
        }
        .wh-list-item-link:hover i {
            transform: translateX(3px);
        }

        /* ============ 侧边栏 ============ */
        .wh-sidebar {
            position: sticky;
            top: 90px;
        }
        .wh-sidebar-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            padding: 22px;
            margin-bottom: 20px;
            box-shadow: var(--wh-shadow-card);
        }
        .wh-sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--wh-accent);
            display: inline-block;
        }
        .wh-sidebar-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .wh-sidebar-links li {
            margin-bottom: 10px;
        }
        .wh-sidebar-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--wh-text-secondary);
            transition: all var(--wh-transition);
            padding: 4px 0;
        }
        .wh-sidebar-links a i {
            font-size: 10px;
            color: var(--wh-accent);
        }
        .wh-sidebar-links a:hover {
            color: var(--wh-accent);
            transform: translateX(3px);
        }
        .wh-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .wh-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            padding: 4px 12px;
            border-radius: var(--wh-radius-badge);
            transition: all var(--wh-transition);
            cursor: default;
        }
        .wh-tag:hover {
            background: rgba(200, 164, 77, 0.3);
            color: var(--wh-accent-hover);
        }
        .wh-sidebar-cta {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            padding: 24px 22px;
            text-align: center;
        }
        .wh-sidebar-cta h4 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .wh-sidebar-cta p {
            font-size: 13px;
            color: rgba(245, 244, 240, 0.7);
            margin-bottom: 16px;
        }

        /* ============ CTA 区 ============ */
        .wh-cta-section {
            background: var(--wh-primary-dark);
            padding: 56px 0;
            border-radius: 0;
        }
        .wh-cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--wh-text-inverse);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .wh-cta-section p {
            font-size: 15px;
            color: rgba(245, 244, 240, 0.72);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        /* ============ 页脚 ============ */
        .wh-footer {
            background: #0D1822;
            color: #C0BEB8;
            font-size: 14px;
            padding: 48px 0 28px;
        }
        .wh-footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: space-between;
            margin-bottom: 28px;
        }
        .wh-footer-brand {
            flex: 1 1 260px;
            max-width: 360px;
        }
        .wh-footer-brand .wh-logo-text {
            color: #fff;
            margin-bottom: 12px;
            display: inline-block;
        }
        .wh-footer-brand p {
            font-size: 13px;
            color: #C0BEB8;
            line-height: 1.8;
            margin-top: 12px;
        }
        .wh-footer-links {
            flex: 1 1 320px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-content: flex-start;
        }
        .wh-footer-links a {
            color: #E8E6E0;
            font-size: 13px;
            transition: color var(--wh-transition);
        }
        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }
        .wh-footer-bottom {
            border-top: 1px solid rgba(245, 244, 240, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #C0BEB8;
        }
        .wh-footer-bottom a {
            color: #E8E6E0;
            font-size: 12px;
            transition: color var(--wh-transition);
        }
        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 992px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-navbar-mobile .container-wh {
                display: flex;
                align-items: center;
                justify-content: space-between;
                min-height: 56px;
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .wh-navbar-mobile .navbar-brand {
                padding: 0;
                margin: 0;
            }
            .wh-navbar-mobile .navbar-brand .wh-logo-text {
                font-size: 17px;
            }
            .wh-navbar-mobile .navbar-brand .wh-logo-text span {
                font-size: 11px;
            }
            .wh-mobile-menu {
                padding: 8px 20px 16px;
            }
            .wh-page-header h1 {
                font-size: 28px;
            }
            .wh-list-item {
                flex-direction: column;
                padding: 14px;
            }
            .wh-list-item-thumb {
                width: 100%;
                height: 180px;
                border-radius: 8px;
            }
            .wh-sidebar {
                position: static;
                margin-top: 20px;
            }
        }
        @media (max-width: 576px) {
            .wh-page-header {
                padding: 32px 0;
            }
            .wh-page-header h1 {
                font-size: 24px;
            }
            .wh-list-section {
                padding: 32px 0 48px;
            }
            .wh-list-item-thumb {
                height: 150px;
            }
            .wh-list-item-title {
                font-size: 16px;
            }
            .wh-cta-section {
                padding: 40px 0;
            }
            .wh-cta-section h2 {
                font-size: 22px;
            }
            .wh-footer {
                padding: 36px 0 20px;
            }
            .wh-footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition), box-shadow var(--wh-transition), transform var(--wh-transition);
        }
        a:hover {
            color: var(--wh-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.4;
            margin-top: 0;
            color: var(--wh-primary);
        }

        p {
            margin-top: 0;
        }

        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header ===== */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }
        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }

        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }
        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }
        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }
        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }
        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }
        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }
        .wh-nav-link:hover {
            color: var(--wh-accent);
        }
        .wh-nav-link:hover::after {
            width: 100%;
        }
        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }
        .wh-nav-link.active::after {
            width: 100%;
        }
        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }
        .wh-nav-logo a {
            display: inline-block;
        }
        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }
        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }

        .wh-nav-mobile {
            display: none;
        }
        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
        }
        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }
        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }
        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }
        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }
        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }
        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }
        .wh-mobile-menu {
            background-color: var(--wh-primary-dark);
            padding: 16px 20px 24px;
            border-bottom: 1px solid rgba(200, 164, 77, 0.25);
        }
        .wh-mobile-menu .wh-nav-link {
            display: block;
            padding: 12px 4px;
            font-size: 16px;
            color: var(--wh-text-inverse);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .wh-mobile-menu .wh-nav-link:last-of-type {
            border-bottom: none;
        }
        .wh-mobile-menu .wh-nav-link:hover {
            color: var(--wh-accent);
            padding-left: 12px;
        }
        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
            padding-left: 12px;
        }

        /* ===== Buttons ===== */
        .btn-wh-primary {
            display: inline-block;
            background-color: var(--wh-accent);
            color: var(--wh-primary);
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--wh-radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--wh-transition);
            text-align: center;
        }
        .btn-wh-primary:hover {
            background-color: var(--wh-accent-hover);
            color: #ffffff;
            box-shadow: var(--wh-shadow-accent);
            transform: translateY(-1px);
        }
        .btn-wh-primary:focus {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
        }

        .btn-wh-outline {
            display: inline-block;
            background: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--wh-radius-btn);
            cursor: pointer;
            transition: all var(--wh-transition);
            text-align: center;
        }
        .btn-wh-outline:hover {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
        }
        .btn-wh-outline:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
        }

        .btn-wh-text-link {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 15px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 0;
            transition: color var(--wh-transition);
        }
        .btn-wh-text-link:hover {
            color: var(--wh-accent-hover);
            text-decoration: underline;
        }
        .btn-wh-text-link:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        /* ===== Badges ===== */
        .wh-badge {
            display: inline-block;
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            border-radius: var(--wh-radius-badge);
            padding: 4px 10px;
            font-weight: 500;
            font-size: 13px;
        }

        /* ===== Page Hero (Category) ===== */
        .wh-page-hero {
            background-color: var(--wh-primary-dark);
            color: var(--wh-text-inverse);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .wh-page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(18, 32, 47, 0.92) 0%, rgba(13, 24, 34, 0.7) 100%);
            z-index: 1;
        }
        .wh-page-hero .container-wh {
            position: relative;
            z-index: 2;
        }
        .wh-page-breadcrumb {
            font-size: 13px;
            color: var(--wh-text-muted);
            margin-bottom: 20px;
        }
        .wh-page-breadcrumb a {
            color: var(--wh-text-muted);
            transition: color var(--wh-transition);
        }
        .wh-page-breadcrumb a:hover {
            color: var(--wh-accent);
        }
        .wh-page-breadcrumb .separator {
            margin: 0 8px;
            color: var(--wh-accent);
        }
        .wh-page-hero h1 {
            color: var(--wh-text-inverse);
            font-size: 38px;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .wh-page-hero .wh-page-hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: #d8d5cd;
            max-width: 720px;
            margin-bottom: 24px;
        }
        .wh-page-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--wh-text-muted);
        }
        .wh-page-hero-meta i {
            color: var(--wh-accent);
            margin-right: 6px;
        }

        /* ===== Interleaved Sections ===== */
        .wh-interleaved-section {
            padding: var(--wh-section-padding) 0;
        }
        .wh-interleaved-section:nth-child(even) {
            background-color: #ffffff;
        }
        .wh-interleaved-section:nth-child(odd) {
            background-color: var(--wh-bg);
        }

        .wh-interleaved-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 56px;
        }
        .wh-interleaved-block:last-child {
            margin-bottom: 0;
        }
        .wh-interleaved-block.wh-reverse {
            flex-direction: row-reverse;
        }

        .wh-interleaved-image {
            flex: 0 0 46%;
            border-radius: var(--wh-radius-card);
            overflow: hidden;
            border: 1px solid var(--wh-border);
            box-shadow: var(--wh-shadow-card);
            transition: transform var(--wh-transition), box-shadow var(--wh-transition);
            position: relative;
        }
        .wh-interleaved-image:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
        }
        .wh-interleaved-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .wh-interleaved-image .image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 14px 18px;
            background: linear-gradient(to top, rgba(18, 32, 47, 0.85), rgba(18, 32, 47, 0));
            pointer-events: none;
        }
        .wh-interleaved-image .image-caption {
            color: #ffffff;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .wh-interleaved-content {
            flex: 1;
        }
        .wh-interleaved-content .wh-section-tag {
            display: inline-block;
            margin-bottom: 10px;
        }
        .wh-interleaved-content h2 {
            font-size: 26px;
            margin-bottom: 18px;
            color: var(--wh-primary);
            letter-spacing: 0.3px;
        }
        .wh-interleaved-content p {
            font-size: 15.5px;
            line-height: 1.9;
            color: var(--wh-text-secondary);
            margin-bottom: 18px;
        }
        .wh-interleaved-content .wh-point-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .wh-interleaved-content .wh-point-list li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--wh-text);
            margin-bottom: 10px;
        }
        .wh-interleaved-content .wh-point-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 10px;
            height: 10px;
            border-radius: 2px;
            background-color: var(--wh-accent);
            opacity: 0.75;
        }
        .wh-interleaved-content .wh-point-list li strong {
            color: var(--wh-primary);
        }

        /* ===== Data Snapshot Strip ===== */
        .wh-data-strip {
            background-color: var(--wh-primary-dark);
            padding: 48px 0;
        }
        .wh-data-strip .wh-strip-item {
            text-align: center;
            padding: 16px 10px;
        }
        .wh-strip-item .wh-strip-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--wh-accent);
            line-height: 1.2;
        }
        .wh-strip-item .wh-strip-label {
            font-size: 14px;
            color: #b8b5ac;
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .wh-faq-section {
            padding: var(--wh-section-padding) 0;
            background-color: #ffffff;
        }
        .wh-faq-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .wh-faq-section .section-title h2 {
            font-size: 28px;
            color: var(--wh-primary);
        }
        .wh-faq-section .section-title p {
            color: var(--wh-text-secondary);
            font-size: 15px;
        }
        .wh-faq-accordion .accordion-item {
            background: var(--wh-bg);
            border: none;
            border-radius: var(--wh-radius-card);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .wh-faq-accordion .accordion-button {
            background: var(--wh-bg);
            color: var(--wh-primary);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 20px;
            border: none;
            border-radius: var(--wh-radius-card);
            position: relative;
            width: 100%;
            text-align: left;
            cursor: pointer;
            transition: background-color var(--wh-transition), color var(--wh-transition);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .wh-faq-accordion .accordion-button:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: -2px;
        }
        .wh-faq-accordion .accordion-button:not(.collapsed) {
            background: #ffffff;
            color: var(--wh-primary);
            border: 1px solid var(--wh-border);
        }
        .wh-faq-accordion .accordion-button::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--wh-accent);
            transition: transform var(--wh-transition);
            margin-left: 12px;
        }
        .wh-faq-accordion .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: rotate(0deg);
        }
        .wh-faq-accordion .accordion-body {
            background: #ffffff;
            padding: 16px 20px 20px;
            color: var(--wh-text-secondary);
            font-size: 15px;
            line-height: 1.8;
            border: 1px solid var(--wh-border);
            border-top: none;
            border-radius: 0 0 var(--wh-radius-card) var(--wh-radius-card);
        }

        /* ===== CTA ===== */
        .wh-cta-section {
            padding: var(--wh-section-padding) 0;
            background: linear-gradient(135deg, var(--wh-primary) 0%, var(--wh-primary-dark) 100%);
            color: var(--wh-text-inverse);
            position: relative;
            overflow: hidden;
        }
        .wh-cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(200, 164, 77, 0.08);
            pointer-events: none;
        }
        .wh-cta-section .wh-cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
        }
        .wh-cta-section h2 {
            color: #ffffff;
            font-size: 30px;
            margin-bottom: 16px;
        }
        .wh-cta-section p {
            color: #d0cec6;
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .wh-cta-section .btn-wh-primary {
            font-size: 16px;
            padding: 12px 28px;
        }

        /* ===== Footer ===== */
        .wh-footer {
            background: var(--wh-primary-dark);
            padding: 48px 0 24px;
            color: #b8b5ac;
            font-size: 14px;
        }
        .wh-footer-top {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .wh-footer-brand {
            flex: 0 0 34%;
            min-width: 260px;
        }
        .wh-footer-brand .wh-logo-text {
            color: #ffffff;
            font-size: 18px;
        }
        .wh-footer-brand .wh-logo-text span {
            font-size: 11px;
            color: var(--wh-accent);
        }
        .wh-footer-brand p {
            color: #a8a59d;
            font-size: 14px;
            line-height: 1.8;
            margin-top: 12px;
        }
        .wh-footer-links {
            flex: 1;
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-content: flex-start;
        }
        .wh-footer-links a {
            color: #d0cec6;
            font-size: 14px;
            transition: color var(--wh-transition);
            white-space: nowrap;
        }
        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }
        .wh-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 13px;
            color: #8a877e;
        }
        .wh-footer-bottom a {
            color: #b8b5ac;
            transition: color var(--wh-transition);
        }
        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-interleaved-block {
                flex-direction: column !important;
                gap: 24px;
            }
            .wh-interleaved-image {
                flex: 0 0 100%;
                width: 100%;
            }
            .wh-interleaved-image img {
                height: 240px;
            }
            .wh-interleaved-content h2 {
                font-size: 22px;
            }
            .wh-page-hero {
                padding: 60px 0 40px;
            }
            .wh-page-hero h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 575.98px) {
            :root {
                --wh-section-padding: var(--wh-section-padding-mobile);
            }
            .container-wh {
                padding-left: 16px;
                padding-right: 16px;
            }
            .wh-page-hero {
                padding: 48px 0 32px;
            }
            .wh-page-hero h1 {
                font-size: 26px;
            }
            .wh-page-hero .wh-page-hero-desc {
                font-size: 15px;
            }
            .wh-page-hero-meta {
                gap: 12px;
                font-size: 13px;
            }
            .wh-interleaved-image img {
                height: 200px;
            }
            .wh-interleaved-content h2 {
                font-size: 20px;
            }
            .wh-interleaved-content p {
                font-size: 14.5px;
            }
            .wh-interleaved-content .wh-point-list li {
                font-size: 14px;
            }
            .wh-data-strip .wh-strip-item .wh-strip-number {
                font-size: 28px;
            }
            .wh-cta-section h2 {
                font-size: 24px;
            }
            .wh-footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .wh-footer-brand {
                flex: 1;
                min-width: 0;
            }
            .wh-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .wh-faq-accordion .accordion-button {
                font-size: 15px;
                padding: 14px 16px;
            }
        }

        @media (min-width: 576px) and (max-width: 767.98px) {
            .wh-interleaved-image img {
                height: 220px;
            }
            .wh-interleaved-block {
                gap: 20px;
            }
        }

/* roulang page: category4 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition), box-shadow var(--wh-transition);
        }

        a:hover {
            color: var(--wh-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部导航 */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }

        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }

        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }

        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }

        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }

        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }

        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }

        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }

        .wh-nav-link:hover {
            color: var(--wh-accent);
        }

        .wh-nav-link:hover::after {
            width: 100%;
        }

        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }

        .wh-nav-link.active::after {
            width: 100%;
        }

        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }

        .wh-nav-logo a {
            display: inline-block;
        }

        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }

        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }

        .wh-nav-mobile {
            display: none;
        }

        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
        }

        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }

        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }

        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }

        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }

        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }

        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }

        .wh-mobile-menu {
            background-color: var(--wh-primary);
            padding: 16px 20px 24px;
            border-radius: 0 0 12px 12px;
        }

        .wh-mobile-menu .wh-nav-link {
            display: block;
            color: var(--wh-text-inverse);
            font-size: 16px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(245, 244, 240, 0.1);
            white-space: normal;
        }

        .wh-mobile-menu .wh-nav-link:last-child {
            border-bottom: none;
        }

        .wh-mobile-menu .wh-nav-link:hover {
            color: var(--wh-accent);
            padding-left: 8px;
        }

        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }

        .wh-mobile-menu .wh-nav-link.active::after {
            display: none;
        }

        /* 面包屑 */
        .wh-breadcrumb {
            font-size: 13px;
            color: var(--wh-text-secondary);
            padding: 12px 0;
            margin-bottom: 0;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .wh-breadcrumb a {
            color: var(--wh-text-secondary);
            transition: color var(--wh-transition);
        }

        .wh-breadcrumb a:hover {
            color: var(--wh-accent);
        }

        .wh-breadcrumb .sep {
            color: var(--wh-border);
            font-size: 12px;
        }

        .wh-breadcrumb .current {
            color: var(--wh-accent);
            font-weight: 600;
        }

        /* 页面顶部 Banner */
        .wh-page-hero {
            background-color: var(--wh-primary);
            color: var(--wh-text-inverse);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .wh-page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: linear-gradient(135deg, rgba(200, 164, 77, 0.08) 0%, rgba(200, 164, 77, 0.02) 50%, transparent 70%);
            pointer-events: none;
        }

        .wh-page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            margin: 0 0 16px;
            line-height: 1.4;
            letter-spacing: 0.5px;
        }

        .wh-page-hero h1 .accent {
            color: var(--wh-accent);
        }

        .wh-page-hero .subtitle {
            font-size: 17px;
            color: rgba(245, 244, 240, 0.8);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .wh-page-hero .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .wh-page-hero .hero-meta span {
            font-size: 13px;
            color: rgba(245, 244, 240, 0.65);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .wh-page-hero .hero-meta i {
            color: var(--wh-accent);
            font-size: 14px;
        }

        /* 板块标题 */
        .wh-section {
            padding: var(--wh-section-padding) 0;
        }

        .wh-section-header {
            margin-bottom: 40px;
        }

        .wh-section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--wh-primary);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .wh-section-header p {
            font-size: 16px;
            color: var(--wh-text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .wh-section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--wh-accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        /* 按钮 */
        .wh-btn {
            display: inline-block;
            padding: 10px 24px;
            border-radius: var(--wh-radius-btn);
            font-weight: 600;
            font-size: 14px;
            line-height: 1.5;
            transition: all var(--wh-transition);
            cursor: pointer;
            border: 1.5px solid transparent;
            text-align: center;
        }

        .wh-btn-primary {
            background: var(--wh-accent);
            color: var(--wh-primary);
            border-color: var(--wh-accent);
        }

        .wh-btn-primary:hover {
            background: var(--wh-accent-hover);
            border-color: var(--wh-accent-hover);
            color: #fff;
            box-shadow: var(--wh-shadow-accent);
            transform: translateY(-1px);
        }

        .wh-btn-primary:focus {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
            box-shadow: none;
        }

        .wh-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .wh-btn-outline {
            background: transparent;
            color: var(--wh-primary);
            border-color: var(--wh-primary);
        }

        .wh-btn-outline:hover {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            border-color: var(--wh-primary);
        }

        .wh-btn-outline:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
            box-shadow: none;
        }

        .wh-btn-outline-light {
            background: transparent;
            color: var(--wh-text-inverse);
            border-color: rgba(245, 244, 240, 0.5);
        }

        .wh-btn-outline-light:hover {
            background: rgba(245, 244, 240, 0.1);
            color: var(--wh-accent);
            border-color: var(--wh-accent);
        }

        /* 卡片 */
        .wh-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            transition: all var(--wh-transition);
            overflow: hidden;
        }

        .wh-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.5);
        }

        .wh-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: var(--wh-radius-card) var(--wh-radius-card) 0 0;
        }

        .wh-card-body {
            padding: 24px;
        }

        .wh-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--wh-primary);
            margin: 0 0 10px;
            line-height: 1.5;
        }

        .wh-card-body p {
            font-size: 14px;
            color: var(--wh-text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        /* 徽章 */
        .wh-badge {
            display: inline-block;
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            border-radius: var(--wh-radius-badge);
            padding: 4px 10px;
            font-weight: 500;
            font-size: 12px;
            line-height: 1.5;
            letter-spacing: 0.5px;
        }

        /* 时间线步骤样式 */
        .wh-timeline-section {
            position: relative;
        }

        .wh-timeline {
            position: relative;
            padding-left: 0;
            list-style: none;
            margin: 0;
        }

        .wh-timeline::before {
            content: '';
            position: absolute;
            top: 0;
            left: 31px;
            right: auto;
            width: 2px;
            height: 100%;
            background: linear-gradient(to bottom, var(--wh-accent) 0%, rgba(200, 164, 77, 0.3) 40%, rgba(200, 164, 77, 0.1) 100%);
            border-radius: 1px;
        }

        .wh-timeline-item {
            position: relative;
            padding-left: 76px;
            padding-bottom: 40px;
            counter-increment: step-counter;
        }

        .wh-timeline-item:last-child {
            padding-bottom: 0;
        }

        .wh-timeline-marker {
            position: absolute;
            left: 0;
            top: 0;
            width: 64px;
            height: 64px;
            background: var(--wh-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: var(--wh-accent);
            border: 3px solid var(--wh-accent);
            z-index: 2;
            transition: all var(--wh-transition);
            box-shadow: 0 4px 12px rgba(18, 32, 47, 0.15);
        }

        .wh-timeline-item:hover .wh-timeline-marker {
            background: var(--wh-accent);
            color: var(--wh-primary);
            border-color: var(--wh-primary);
            transform: scale(1.05);
            box-shadow: var(--wh-shadow-accent);
        }

        .wh-timeline-step {
            font-size: 11px;
            font-weight: 600;
            color: var(--wh-accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: block;
            margin-bottom: 4px;
        }

        .wh-timeline-content {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            padding: 28px 32px;
            transition: all var(--wh-transition);
        }

        .wh-timeline-content:hover {
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.5);
        }

        .wh-timeline-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--wh-primary);
            margin: 0 0 12px;
            line-height: 1.4;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .wh-timeline-content h3 .wh-badge {
            font-size: 11px;
            text-transform: none;
            letter-spacing: 0;
        }

        .wh-timeline-content p {
            font-size: 15px;
            color: var(--wh-text-secondary);
            margin: 0 0 16px;
            line-height: 1.85;
        }

        .wh-timeline-content .wh-step-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--wh-text-secondary);
        }

        .wh-timeline-content .wh-step-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .wh-timeline-content .wh-step-meta i {
            color: var(--wh-accent);
            font-size: 13px;
        }

        /* 步骤概览 */
        .wh-step-overview {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 12px;
            margin-top: 32px;
        }

        .wh-step-overview-item {
            text-align: center;
            padding: 16px 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(200, 164, 77, 0.15);
            border-radius: var(--wh-radius-card);
            color: var(--wh-text-inverse);
            transition: all var(--wh-transition);
        }

        .wh-step-overview-item:hover {
            background: rgba(200, 164, 77, 0.15);
            border-color: var(--wh-accent);
            transform: translateY(-2px);
        }

        .wh-step-overview-item .number {
            font-size: 22px;
            font-weight: 700;
            color: var(--wh-accent);
            display: block;
            margin-bottom: 4px;
        }

        .wh-step-overview-item .label {
            font-size: 13px;
            color: var(--wh-text-inverse);
            opacity: 0.85;
            line-height: 1.4;
        }

        /* 步骤要点提示 */
        .wh-step-tip {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: rgba(200, 164, 77, 0.08);
            border-left: 3px solid var(--wh-accent);
            border-radius: 0 8px 8px 0;
            padding: 16px 20px;
            margin-top: 24px;
        }

        .wh-step-tip i {
            color: var(--wh-accent);
            font-size: 20px;
            margin-top: 2px;
        }

        .wh-step-tip p {
            font-size: 14px;
            color: var(--wh-text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        /* 深色 CTA 区块 */
        .wh-cta-dark {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .wh-cta-dark::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(200, 164, 77, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .wh-cta-dark h2 {
            font-size: 30px;
            font-weight: 700;
            margin: 0 0 12px;
            line-height: 1.4;
            color: var(--wh-text-inverse);
        }

        .wh-cta-dark p {
            font-size: 16px;
            color: rgba(245, 244, 240, 0.75);
            max-width: 640px;
            line-height: 1.8;
            margin: 0 0 24px;
        }

        .wh-cta-dark .wh-btn {
            background: var(--wh-accent);
            color: var(--wh-primary);
            border-color: var(--wh-accent);
            font-weight: 600;
        }

        .wh-cta-dark .wh-btn:hover {
            background: var(--wh-accent-hover);
            border-color: var(--wh-accent-hover);
            color: #fff;
            box-shadow: var(--wh-shadow-accent);
        }

        /* 页脚 */
        .wh-footer {
            background: var(--wh-primary-dark);
            color: var(--wh-text-muted);
            padding: 48px 0 24px;
        }

        .wh-footer-top {
            display: grid;
            grid-template-columns: 1.5fr 2fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
            margin-bottom: 24px;
        }

        .wh-footer-brand .wh-logo-text {
            color: var(--wh-text-inverse);
            font-size: 18px;
        }

        .wh-footer-brand .wh-logo-text span {
            color: var(--wh-accent);
            font-size: 11px;
            letter-spacing: 1.5px;
        }

        .wh-footer-brand p {
            font-size: 14px;
            color: var(--wh-text-muted);
            line-height: 1.8;
            margin: 12px 0 0;
            max-width: 360px;
        }

        .wh-footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px 24px;
            align-content: start;
        }

        .wh-footer-links a {
            color: #E8E6E0;
            font-size: 14px;
            transition: color var(--wh-transition), padding-left var(--wh-transition);
        }

        .wh-footer-links a:hover {
            color: var(--wh-accent);
            padding-left: 4px;
        }

        .wh-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            font-size: 13px;
            color: rgba(245, 244, 240, 0.5);
        }

        .wh-footer-bottom a {
            color: rgba(245, 244, 240, 0.6);
            transition: color var(--wh-transition);
        }

        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-page-hero h1 {
                font-size: 30px;
            }
            .wh-timeline::before {
                left: 19px;
            }
            .wh-timeline-item {
                padding-left: 56px;
            }
            .wh-timeline-marker {
                width: 48px;
                height: 48px;
                font-size: 16px;
                border-width: 2px;
            }
            .wh-step-overview {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .wh-footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .wh-footer-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            :root {
                --wh-section-padding: 40px;
            }
            .wh-page-hero {
                padding: 40px 0;
            }
            .wh-page-hero h1 {
                font-size: 24px;
            }
            .wh-page-hero .subtitle {
                font-size: 15px;
            }
            .wh-page-hero .hero-meta {
                gap: 12px;
                flex-direction: column;
            }
            .wh-timeline::before {
                left: 15px;
            }
            .wh-timeline-item {
                padding-left: 48px;
                padding-bottom: 28px;
            }
            .wh-timeline-marker {
                width: 40px;
                height: 40px;
                font-size: 14px;
            }
            .wh-timeline-content {
                padding: 20px 18px;
            }
            .wh-timeline-content h3 {
                font-size: 17px;
            }
            .wh-step-overview {
                grid-template-columns: repeat(2, 1fr);
            }
            .wh-cta-dark h2 {
                font-size: 24px;
            }
            .wh-footer-links {
                grid-template-columns: 1fr;
            }
            .wh-footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

/* roulang page: category7 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition);
        }

        a:hover {
            color: var(--wh-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部导航 */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }

        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }

        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }

        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }

        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }

        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }

        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }

        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }

        .wh-nav-link:hover {
            color: var(--wh-accent);
        }

        .wh-nav-link:hover::after {
            width: 100%;
        }

        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }

        .wh-nav-link.active::after {
            width: 100%;
        }

        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }

        .wh-nav-logo a {
            display: inline-block;
        }

        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }

        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }

        .wh-nav-mobile {
            display: none;
        }

        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
        }

        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }

        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }

        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }

        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }

        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }

        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }

        .wh-mobile-menu {
            background-color: var(--wh-primary-dark);
            padding: 16px 20px 24px;
        }

        .wh-mobile-menu .wh-nav-link {
            display: block;
            padding: 12px 0;
            font-size: 16px;
            color: var(--wh-text-inverse);
            border-bottom: 1px solid rgba(245, 244, 240, 0.1);
            white-space: normal;
        }

        .wh-mobile-menu .wh-nav-link:last-child {
            border-bottom: none;
        }

        .wh-mobile-menu .wh-nav-link:hover,
        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
        }

        .wh-mobile-menu .wh-nav-link::after {
            display: none;
        }

        /* 面包屑 */
        .wh-breadcrumb {
            padding: 24px 0 4px;
            font-size: 14px;
            color: var(--wh-text-secondary);
        }

        .wh-breadcrumb a {
            color: var(--wh-text-secondary);
        }

        .wh-breadcrumb a:hover {
            color: var(--wh-accent);
        }

        .wh-breadcrumb .separator {
            margin: 0 8px;
            color: var(--wh-border);
        }

        .wh-breadcrumb .current {
            color: var(--wh-primary);
            font-weight: 600;
        }

        /* 页面标题区 */
        .wh-page-hero {
            background-color: var(--wh-primary);
            background-image: linear-gradient(135deg, rgba(18, 32, 47, 0.92) 0%, rgba(13, 24, 34, 0.88) 100%);
            padding: 64px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .wh-page-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border: 1px solid rgba(200, 164, 77, 0.2);
            border-radius: 50%;
            pointer-events: none;
        }

        .wh-page-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(200, 164, 77, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .wh-page-hero-content {
            position: relative;
            z-index: 1;
        }

        .wh-page-hero h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--wh-text-inverse);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .wh-page-hero .wh-hero-subtitle {
            font-size: 18px;
            color: rgba(245, 244, 240, 0.8);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .wh-page-hero .wh-hero-accent-line {
            width: 60px;
            height: 3px;
            background-color: var(--wh-accent);
            margin-bottom: 20px;
            border-radius: 2px;
        }

        /* 区块通用 */
        .wh-section {
            padding: var(--wh-section-padding) 0;
        }

        .wh-section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .wh-section-subtitle {
            font-size: 16px;
            color: var(--wh-text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .wh-accent-line {
            width: 48px;
            height: 3px;
            background-color: var(--wh-accent);
            margin-bottom: 16px;
            border-radius: 2px;
        }

        /* 按钮 */
        .wh-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--wh-accent);
            color: var(--wh-primary);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--wh-radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--wh-transition);
            font-size: 15px;
        }

        .wh-btn-primary:hover {
            background-color: var(--wh-accent-hover);
            color: #FFFFFF;
            box-shadow: var(--wh-shadow-accent);
            transform: translateY(-1px);
        }

        .wh-btn-primary:focus {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
        }

        .wh-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--wh-radius-btn);
            cursor: pointer;
            transition: all var(--wh-transition);
            font-size: 15px;
        }

        .wh-btn-outline:hover {
            background-color: var(--wh-primary);
            color: var(--wh-text-inverse);
        }

        .wh-btn-outline:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
        }

        .wh-btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--wh-text-inverse);
            color: var(--wh-primary);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--wh-radius-btn);
            border: 1px solid var(--wh-border);
            cursor: pointer;
            transition: all var(--wh-transition);
            font-size: 15px;
        }

        .wh-btn-light:hover {
            background-color: var(--wh-bg);
            border-color: var(--wh-accent);
            color: var(--wh-primary);
        }

        /* 表单 */
        .wh-form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--wh-text);
            margin-bottom: 6px;
            display: block;
        }

        .wh-form-control {
            width: 100%;
            background-color: var(--wh-card);
            border: 1px solid var(--wh-border-input);
            border-radius: var(--wh-radius-btn);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--wh-text);
            transition: border-color var(--wh-transition), box-shadow var(--wh-transition);
        }

        .wh-form-control:focus {
            border-color: var(--wh-accent);
            box-shadow: 0 0 0 3px rgba(200, 164, 77, 0.15);
            outline: none;
        }

        .wh-form-control::placeholder {
            color: #A9A49B;
        }

        .wh-form-textarea {
            min-height: 140px;
            resize: vertical;
        }

        /* 联系页卡片 */
        .wh-contact-card {
            background-color: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            padding: 32px;
            transition: box-shadow var(--wh-transition);
        }

        .wh-contact-card:hover {
            box-shadow: var(--wh-shadow-card-hover);
        }

        .wh-contact-info-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid var(--wh-border);
        }

        .wh-contact-info-item:last-child {
            border-bottom: none;
        }

        .wh-contact-info-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background-color: rgba(200, 164, 77, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--wh-accent);
            font-size: 16px;
        }

        .wh-contact-info-text {
            flex: 1;
        }

        .wh-contact-info-text h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--wh-primary);
            margin-bottom: 4px;
        }

        .wh-contact-info-text p {
            font-size: 14px;
            color: var(--wh-text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* FAQ */
        .wh-accordion .accordion-item {
            border: none;
            margin-bottom: 12px;
            border-radius: var(--wh-radius-btn) !important;
            overflow: hidden;
            background-color: var(--wh-bg);
            transition: all var(--wh-transition);
        }

        .wh-accordion .accordion-button {
            background-color: var(--wh-bg);
            color: var(--wh-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 20px;
            border-radius: var(--wh-radius-btn) !important;
            box-shadow: none;
            transition: all var(--wh-transition);
        }

        .wh-accordion .accordion-button:not(.collapsed) {
            background-color: var(--wh-card);
            color: var(--wh-primary);
            border: 1px solid var(--wh-border);
            border-bottom-left-radius: 0 !important;
            border-bottom-right-radius: 0 !important;
        }

        .wh-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(200, 164, 77, 0.15);
            outline: none;
        }

        .wh-accordion .accordion-button::after {
            display: none;
        }

        .wh-accordion .accordion-button .wh-acc-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            margin-left: auto;
        }

        .wh-accordion .accordion-button .wh-acc-icon::before,
        .wh-accordion .accordion-button .wh-acc-icon::after {
            content: '';
            position: absolute;
            background-color: var(--wh-accent);
            transition: all var(--wh-transition);
        }

        .wh-accordion .accordion-button .wh-acc-icon::before {
            top: 50%;
            left: 0;
            width: 20px;
            height: 2px;
            transform: translateY(-50%);
        }

        .wh-accordion .accordion-button .wh-acc-icon::after {
            left: 50%;
            top: 0;
            width: 2px;
            height: 20px;
            transform: translateX(-50%);
            transition: all var(--wh-transition);
        }

        .wh-accordion .accordion-button:not(.collapsed) .wh-acc-icon::after {
            transform: translateX(-50%) rotate(90deg);
            opacity: 0;
        }

        .wh-accordion .accordion-body {
            background-color: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-top: none;
            border-bottom-left-radius: var(--wh-radius-btn);
            border-bottom-right-radius: var(--wh-radius-btn);
            padding: 16px 20px 20px;
            font-size: 15px;
            color: var(--wh-text-secondary);
            line-height: 1.8;
        }

        /* 页脚 */
        .wh-footer {
            background-color: var(--wh-primary-dark);
            color: var(--wh-text-muted);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .wh-footer-top {
            display: flex;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
            margin-bottom: 24px;
        }

        .wh-footer-brand {
            flex: 1;
            min-width: 260px;
        }

        .wh-footer-brand .wh-logo-text {
            color: var(--wh-text-inverse);
        }

        .wh-footer-brand p {
            font-size: 14px;
            color: var(--wh-text-muted);
            margin-top: 12px;
            max-width: 360px;
            line-height: 1.7;
        }

        .wh-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: flex-start;
            flex: 2;
            justify-content: flex-end;
        }

        .wh-footer-links a {
            font-size: 14px;
            color: #E8E6E0;
            transition: color var(--wh-transition);
        }

        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }

        .wh-footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--wh-text-muted);
        }

        .wh-footer-bottom a {
            color: var(--wh-text-muted);
            transition: color var(--wh-transition);
        }

        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-page-hero h1 {
                font-size: 32px;
            }
            .wh-section {
                padding: 56px 0;
            }
            .wh-section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 767.98px) {
            .wh-page-hero {
                padding: 48px 0 56px;
            }
            .wh-page-hero h1 {
                font-size: 26px;
            }
            .wh-page-hero .wh-hero-subtitle {
                font-size: 15px;
            }
            .wh-section {
                padding: 40px 0;
            }
            .wh-section-title {
                font-size: 22px;
            }
            .wh-contact-card {
                padding: 20px;
            }
            .wh-footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .wh-footer-links {
                justify-content: flex-start;
            }
            .wh-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .wh-btn-primary,
            .wh-btn-outline,
            .wh-btn-light {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 575.98px) {
            .wh-page-hero h1 {
                font-size: 22px;
            }
            .wh-page-hero .wh-hero-subtitle {
                font-size: 14px;
            }
            .wh-section-title {
                font-size: 20px;
            }
            .wh-contact-card {
                padding: 16px;
            }
            .wh-form-control {
                font-size: 16px;
                padding: 12px 14px;
            }
        }

/* roulang page: category5 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition), box-shadow var(--wh-transition);
        }
        a:hover {
            color: var(--wh-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部导航 */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }
        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }
        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }
        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }
        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }
        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }
        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            cursor: pointer;
        }
        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }
        .wh-nav-link:hover {
            color: var(--wh-accent);
        }
        .wh-nav-link:hover::after {
            width: 100%;
        }
        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }
        .wh-nav-link.active::after {
            width: 100%;
        }
        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }
        .wh-nav-logo a {
            display: inline-block;
        }
        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }
        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }
        .wh-nav-mobile {
            display: none;
        }
        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
            padding: 12px 0;
        }
        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }
        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }
        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }
        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }
        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }
        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }
        .wh-mobile-menu {
            background: var(--wh-primary);
            padding: 16px 20px;
            border-radius: 0 0 12px 12px;
            margin-top: 8px;
        }
        .wh-mobile-menu .wh-nav-link {
            display: block;
            color: var(--wh-text-inverse);
            font-size: 16px;
            padding: 12px 8px;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
        }
        .wh-mobile-menu .wh-nav-link:last-child {
            border-bottom: none;
        }
        .wh-mobile-menu .wh-nav-link:hover,
        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
        }
        .wh-mobile-menu .wh-nav-link.active {
            font-weight: 600;
        }

        /* 面包屑 */
        .wh-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--wh-text-secondary);
            padding: 16px 0;
            margin-bottom: 0;
        }
        .wh-breadcrumb a {
            color: var(--wh-text-secondary);
        }
        .wh-breadcrumb a:hover {
            color: var(--wh-accent);
        }
        .wh-breadcrumb .wh-breadcrumb-sep {
            color: var(--wh-border);
            font-size: 12px;
        }
        .wh-breadcrumb .wh-breadcrumb-current {
            color: var(--wh-primary);
            font-weight: 600;
        }

        /* 页面标题区 */
        .wh-page-hero {
            background: var(--wh-primary);
            position: relative;
            padding: 72px 0 64px;
            overflow: hidden;
        }
        .wh-page-hero .wh-page-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }
        .wh-page-hero .wh-page-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 32, 47, 0.85) 0%, rgba(13, 24, 34, 0.75) 100%);
            z-index: 1;
        }
        .wh-page-hero .container-wh {
            position: relative;
            z-index: 2;
        }
        .wh-page-hero h1 {
            color: var(--wh-text-inverse);
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .wh-page-hero h1 .wh-highlight {
            color: var(--wh-accent);
        }
        .wh-page-hero .wh-page-hero-sub {
            color: rgba(245, 244, 240, 0.85);
            font-size: 16px;
            line-height: 1.75;
            max-width: 720px;
        }

        /* 搜索框 */
        .wh-search-bar {
            margin-top: 32px;
            max-width: 640px;
            position: relative;
        }
        .wh-search-bar input {
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid rgba(200, 164, 77, 0.4);
            border-radius: var(--wh-radius-btn);
            padding: 14px 48px 14px 20px;
            font-size: 15px;
            color: var(--wh-text);
            outline: none;
            transition: border-color var(--wh-transition), box-shadow var(--wh-transition);
        }
        .wh-search-bar input::placeholder {
            color: #8A857A;
        }
        .wh-search-bar input:focus {
            border-color: var(--wh-accent);
            box-shadow: 0 0 0 3px rgba(200, 164, 77, 0.2);
        }
        .wh-search-bar .wh-search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--wh-accent);
            font-size: 18px;
            pointer-events: none;
        }

        /* 资源主体区 */
        .wh-resource-section {
            padding: var(--wh-section-padding) 0;
        }
        .wh-section-label {
            display: inline-block;
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .wh-section-title {
            font-size: clamp(22px, 2.5vw, 30px);
            font-weight: 700;
            color: var(--wh-primary);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .wh-section-desc {
            font-size: 15px;
            color: var(--wh-text-secondary);
            line-height: 1.75;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* 资源卡片 */
        .wh-resource-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .wh-resource-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            padding: 28px;
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--wh-transition), transform var(--wh-transition), border-color var(--wh-transition);
        }
        .wh-resource-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--wh-shadow-card-hover);
            border-color: rgba(200, 164, 77, 0.5);
        }
        .wh-resource-card-top {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 16px;
        }
        .wh-resource-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: rgba(18, 32, 47, 0.06);
            color: var(--wh-primary);
            transition: background-color var(--wh-transition), color var(--wh-transition);
        }
        .wh-resource-card:hover .wh-resource-icon {
            background: var(--wh-primary);
            color: var(--wh-accent);
        }
        .wh-resource-icon.wh-icon-accent {
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
        }
        .wh-resource-card:hover .wh-resource-icon.wh-icon-accent {
            background: var(--wh-accent);
            color: var(--wh-primary);
        }
        .wh-resource-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .wh-resource-badge {
            display: inline-block;
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: var(--wh-radius-badge);
            letter-spacing: 0.3px;
        }
        .wh-resource-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--wh-primary);
            line-height: 1.45;
            margin-bottom: 8px;
        }
        .wh-resource-card p {
            font-size: 14px;
            color: var(--wh-text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
        }
        .wh-resource-card-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            border-top: 1px solid var(--wh-border);
            padding-top: 16px;
            margin-top: auto;
        }
        .wh-resource-file-info {
            font-size: 12px;
            color: var(--wh-text-secondary);
        }
        .wh-resource-file-info i {
            margin-right: 4px;
            color: var(--wh-accent);
        }

        /* 按钮 */
        .wh-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--wh-radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--wh-transition);
            text-decoration: none;
            line-height: 1.5;
        }
        .wh-btn-outline {
            background: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
            padding: 8px 16px;
            font-size: 13px;
        }
        .wh-btn-outline:hover {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
            border-color: var(--wh-primary);
        }
        .wh-btn-outline:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
        }
        .wh-btn-accent {
            background: var(--wh-accent);
            color: var(--wh-primary);
        }
        .wh-btn-accent:hover {
            background: var(--wh-accent-hover);
            color: #fff;
            box-shadow: var(--wh-shadow-accent);
        }
        .wh-btn-accent:focus {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
        }

        /* CTA区 */
        .wh-cta-section {
            background: var(--wh-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .wh-cta-section .wh-cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 0;
        }
        .wh-cta-section .container-wh {
            position: relative;
            z-index: 1;
        }
        .wh-cta-section h2 {
            color: var(--wh-text-inverse);
            font-size: clamp(22px, 2.5vw, 28px);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .wh-cta-section p {
            color: rgba(245, 244, 240, 0.8);
            font-size: 15px;
            line-height: 1.75;
            max-width: 600px;
            margin-bottom: 24px;
        }
        .wh-cta-section .wh-btn-accent {
            background: var(--wh-accent);
            color: var(--wh-primary);
            font-size: 15px;
            padding: 12px 28px;
        }
        .wh-cta-section .wh-btn-accent:hover {
            background: var(--wh-accent-hover);
            color: #fff;
        }

        /* 页脚 */
        .wh-footer {
            background: var(--wh-primary-dark);
            color: var(--wh-text-muted);
            padding: 56px 0 32px;
        }
        .wh-footer-top {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .wh-footer-brand {
            max-width: 320px;
        }
        .wh-footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--wh-text-muted);
            margin-top: 12px;
        }
        .wh-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            font-size: 13px;
            align-items: flex-start;
        }
        .wh-footer-links a {
            color: #E8E6E0;
        }
        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }
        .wh-footer-bottom {
            border-top: 1px solid rgba(245, 244, 240, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 24px;
            font-size: 12px;
            color: var(--wh-text-muted);
            justify-content: space-between;
            align-items: center;
        }
        .wh-footer-bottom a {
            color: var(--wh-text-muted);
        }
        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-resource-grid {
                grid-template-columns: 1fr;
            }
            .wh-page-hero {
                padding: 48px 0 40px;
            }
        }
        @media (max-width: 576px) {
            :root {
                --wh-section-padding: 40px;
            }
            .wh-page-hero {
                padding: 36px 0 32px;
            }
            .wh-page-hero h1 {
                font-size: 24px;
            }
            .wh-page-hero .wh-page-hero-sub {
                font-size: 14px;
            }
            .wh-search-bar input {
                padding: 12px 40px 12px 16px;
                font-size: 14px;
            }
            .wh-resource-card {
                padding: 20px;
            }
            .wh-resource-card-top {
                gap: 12px;
            }
            .wh-resource-icon {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .wh-resource-card h3 {
                font-size: 15px;
            }
            .wh-resource-card p {
                font-size: 13px;
            }
            .wh-footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .wh-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .wh-resource-card-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }
        @media (min-width: 992px) {
            .wh-nav-desktop {
                display: flex;
            }
            .wh-nav-mobile {
                display: none;
            }
        }

.wh-featured-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            padding: 32px;
            margin: 40px 0;
            transition: box-shadow var(--wh-transition);
        }
        .wh-featured-card:hover {
            box-shadow: var(--wh-shadow-card-hover);
        }
        .wh-featured-img {
            border-radius: var(--wh-radius-card);
            border: 1px solid var(--wh-border);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .wh-resource-card .wh-resource-file-info i {
            margin-right: 4px;
            color: var(--wh-accent);
        }

/* roulang page: category6 */
:root {
            --wh-primary: #12202F;
            --wh-primary-dark: #0D1822;
            --wh-accent: #C8A44D;
            --wh-accent-hover: #A8893A;
            --wh-bg: #F5F4F0;
            --wh-card: #FFFFFF;
            --wh-text: #1C1C1C;
            --wh-text-secondary: #5F5B52;
            --wh-text-inverse: #F5F4F0;
            --wh-text-muted: #C0BEB8;
            --wh-border: #E2DED5;
            --wh-border-input: #D8D2C6;
            --wh-copper: #8A6A3B;
            --wh-radius-card: 12px;
            --wh-radius-btn: 8px;
            --wh-radius-badge: 4px;
            --wh-shadow-card: 0 1px 3px rgba(18, 32, 47, 0.06);
            --wh-shadow-card-hover: 0 8px 24px rgba(18, 32, 47, 0.10);
            --wh-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
            --wh-shadow-accent: 0 4px 12px rgba(200, 164, 77, 0.35);
            --wh-font-stack: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --wh-section-padding: 72px;
            --wh-section-padding-mobile: 40px;
            --wh-container-max: 1200px;
            --wh-transition: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--wh-font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--wh-text);
            background-color: var(--wh-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--wh-transition), background-color var(--wh-transition), border-color var(--wh-transition);
        }

        a:hover {
            color: var(--wh-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-wh {
            max-width: var(--wh-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部导航 */
        .wh-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: var(--wh-bg);
            border-bottom: 1px solid var(--wh-border);
            transition: box-shadow var(--wh-transition);
        }

        .wh-header.scrolled {
            box-shadow: 0 4px 16px rgba(18, 32, 47, 0.08);
        }

        .wh-nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }

        .wh-nav-group {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }

        .wh-nav-group.wh-nav-group-left {
            justify-content: flex-start;
        }

        .wh-nav-group.wh-nav-group-right {
            justify-content: flex-end;
        }

        .wh-nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--wh-text);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--wh-transition);
        }

        .wh-nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--wh-accent);
            transform: translateX(-50%);
            transition: width var(--wh-transition);
        }

        .wh-nav-link:hover {
            color: var(--wh-accent);
        }

        .wh-nav-link:hover::after {
            width: 100%;
        }

        .wh-nav-link.active {
            color: var(--wh-accent);
            font-weight: 600;
        }

        .wh-nav-link.active::after {
            width: 100%;
        }

        .wh-nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 8px 16px;
        }

        .wh-nav-logo a {
            display: inline-block;
        }

        .wh-logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--wh-primary);
            line-height: 1.3;
            white-space: nowrap;
        }

        .wh-logo-text span {
            color: var(--wh-accent);
            font-weight: 600;
            font-size: 13px;
            display: block;
            letter-spacing: 1.5px;
            margin-top: -2px;
        }

        .wh-nav-mobile {
            display: none;
        }

        .wh-navbar-mobile {
            background-color: var(--wh-bg) !important;
            border-bottom: 1px solid var(--wh-border);
        }

        .wh-navbar-mobile .navbar-toggler {
            border: none;
            padding: 10px 12px;
            background: transparent;
        }

        .wh-navbar-mobile .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--wh-accent);
            outline: none;
        }

        .wh-navbar-mobile .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
        }

        .wh-navbar-mobile .navbar-toggler-icon::before,
        .wh-navbar-mobile .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--wh-primary);
            transition: all var(--wh-transition);
        }

        .wh-navbar-mobile .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 7px 0 var(--wh-primary);
        }

        .wh-navbar-mobile .navbar-toggler-icon::after {
            bottom: 2px;
        }

        .wh-mobile-menu {
            background-color: var(--wh-primary);
            padding: 24px 20px;
        }

        .wh-mobile-menu .wh-nav-link {
            display: block;
            color: var(--wh-text-inverse);
            font-size: 16px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
        }

        .wh-mobile-menu .wh-nav-link:last-child {
            border-bottom: none;
        }

        .wh-mobile-menu .wh-nav-link:hover,
        .wh-mobile-menu .wh-nav-link.active {
            color: var(--wh-accent);
        }

        .wh-mobile-menu .wh-nav-link::after {
            display: none;
        }

        /* 面包屑 */
        .wh-breadcrumb {
            padding: 28px 0 0;
            font-size: 14px;
            color: var(--wh-text-secondary);
        }

        .wh-breadcrumb a {
            color: var(--wh-text-secondary);
        }

        .wh-breadcrumb a:hover {
            color: var(--wh-accent);
        }

        .wh-breadcrumb .separator {
            margin: 0 10px;
            color: var(--wh-border);
        }

        .wh-breadcrumb .current {
            color: var(--wh-accent);
            font-weight: 500;
        }

        /* 页面标题区 */
        .wh-page-hero {
            padding: 48px 0 40px;
            text-align: left;
        }

        .wh-page-hero .wh-badge-line {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .wh-badge {
            display: inline-block;
            background: rgba(200, 164, 77, 0.15);
            color: var(--wh-copper);
            border-radius: var(--wh-radius-badge);
            padding: 4px 10px;
            font-weight: 500;
            font-size: 13px;
        }

        .wh-page-hero h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .wh-page-hero .wh-page-intro {
            font-size: 17px;
            color: var(--wh-text-secondary);
            max-width: 820px;
            line-height: 1.85;
        }

        /* 数据模块板块 */
        .wh-data-section {
            padding: var(--wh-section-padding) 0;
        }

        .wh-data-section:nth-child(even) {
            background-color: #FFFFFF;
        }

        .wh-data-section:nth-child(odd) {
            background-color: var(--wh-bg);
        }

        .wh-data-card {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            padding: 0;
            overflow: hidden;
            transition: box-shadow var(--wh-transition), transform var(--wh-transition);
        }

        .wh-data-card:hover {
            box-shadow: var(--wh-shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(200, 164, 77, 0.5);
        }

        .wh-data-card .wh-data-visual {
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--wh-border);
        }

        .wh-data-card .wh-data-visual img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .wh-data-card:hover .wh-data-visual img {
            transform: scale(1.03);
        }

        .wh-data-card .wh-data-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(18,32,47,0.55) 0%, rgba(18,32,47,0.25) 100%);
            display: flex;
            align-items: flex-end;
            padding: 20px 24px;
        }

        .wh-data-card .wh-data-number {
            font-size: 48px;
            font-weight: 700;
            color: var(--wh-accent);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .wh-data-card .wh-data-unit {
            font-size: 18px;
            color: rgba(200, 164, 77, 0.85);
            font-weight: 500;
            margin-left: 6px;
        }

        .wh-data-card .wh-data-body {
            padding: 28px 28px 32px;
        }

        .wh-data-card .wh-data-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .wh-data-card .wh-data-subtitle {
            font-size: 14px;
            color: var(--wh-text-secondary);
            margin-bottom: 16px;
        }

        .wh-data-card .wh-data-desc {
            color: var(--wh-text);
            line-height: 1.85;
        }

        .wh-data-card .wh-data-desc p {
            margin-bottom: 12px;
        }

        .wh-data-card .wh-data-desc p:last-child {
            margin-bottom: 0;
        }

        /* 指标条 */
        .wh-metric-bar {
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }

        .wh-metric-item {
            flex: 1;
            min-width: 130px;
            text-align: left;
        }

        .wh-metric-item .wh-metric-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--wh-primary);
        }

        .wh-metric-item .wh-metric-label {
            font-size: 13px;
            color: var(--wh-text-secondary);
            margin-top: 2px;
        }

        /* 图表占位区 */
        .wh-chart-placeholder {
            background: linear-gradient(135deg, rgba(18,32,47,0.03) 0%, rgba(200,164,77,0.05) 100%);
            border: 1px dashed var(--wh-border);
            border-radius: var(--wh-radius-card);
            padding: 32px 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 160px;
            margin-top: 16px;
        }

        .wh-chart-bar-group {
            display: flex;
            align-items: flex-end;
            gap: 10px;
            height: 120px;
        }

        .wh-chart-bar {
            width: 32px;
            border-radius: 4px 4px 0 0;
            background-color: var(--wh-accent);
            opacity: 0.75;
            transition: opacity var(--wh-transition), transform var(--wh-transition);
        }

        .wh-chart-bar:hover {
            opacity: 1;
            transform: scaleY(1.05);
            transform-origin: bottom;
        }

        .wh-chart-bar:nth-child(1) { height: 45px; }
        .wh-chart-bar:nth-child(2) { height: 72px; }
        .wh-chart-bar:nth-child(3) { height: 58px; }
        .wh-chart-bar:nth-child(4) { height: 95px; }
        .wh-chart-bar:nth-child(5) { height: 80px; }
        .wh-chart-bar:nth-child(6) { height: 108px; }
        .wh-chart-bar:nth-child(7) { height: 88px; }

        /* 深度解读区 */
        .wh-insight-section {
            padding: var(--wh-section-padding) 0;
            background-color: var(--wh-primary);
            color: var(--wh-text-inverse);
        }

        .wh-insight-section .wh-insight-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--wh-text-inverse);
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .wh-insight-section .wh-insight-text {
            color: var(--wh-text-muted);
            line-height: 1.9;
        }

        .wh-insight-section .wh-insight-text p {
            margin-bottom: 16px;
        }

        .wh-insight-section .wh-insight-text p:last-child {
            margin-bottom: 0;
        }

        .wh-insight-highlight {
            color: var(--wh-accent);
            font-weight: 500;
        }

        /* CTA 区 */
        .wh-cta-section {
            padding: var(--wh-section-padding) 0;
            background-color: var(--wh-bg);
        }

        .wh-cta-panel {
            background: var(--wh-card);
            border: 1px solid var(--wh-border);
            border-radius: var(--wh-radius-card);
            box-shadow: var(--wh-shadow-card);
            padding: 48px 40px;
            text-align: center;
        }

        .wh-cta-panel h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--wh-primary);
            margin-bottom: 12px;
        }

        .wh-cta-panel p {
            color: var(--wh-text-secondary);
            font-size: 16px;
            margin-bottom: 28px;
        }

        /* 按钮 */
        .wh-btn {
            display: inline-block;
            padding: 10px 24px;
            border-radius: var(--wh-radius-btn);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--wh-transition);
            cursor: pointer;
            border: none;
            text-align: center;
        }

        .wh-btn-primary {
            background: var(--wh-accent);
            color: var(--wh-primary);
        }

        .wh-btn-primary:hover {
            background: var(--wh-accent-hover);
            color: #FFFFFF;
            box-shadow: var(--wh-shadow-accent);
        }

        .wh-btn-primary:focus {
            outline: 2px solid var(--wh-primary);
            outline-offset: 2px;
        }

        .wh-btn-outline {
            background: transparent;
            border: 1.5px solid var(--wh-primary);
            color: var(--wh-primary);
        }

        .wh-btn-outline:hover {
            background: var(--wh-primary);
            color: var(--wh-text-inverse);
        }

        .wh-btn-outline:focus {
            outline: 2px solid var(--wh-accent);
            outline-offset: 2px;
        }

        .wh-btn-link {
            color: var(--wh-accent);
            background: none;
            padding: 6px 0;
        }

        .wh-btn-link:hover {
            text-decoration: underline;
        }

        /* 页脚 */
        .wh-footer {
            background: var(--wh-primary-dark);
            color: var(--wh-text-muted);
            padding: 48px 0 32px;
        }

        .wh-footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(245, 244, 240, 0.08);
            margin-bottom: 24px;
        }

        .wh-footer-brand {
            max-width: 420px;
        }

        .wh-footer-brand .wh-logo-text {
            color: var(--wh-text-inverse);
            font-size: 18px;
        }

        .wh-footer-brand p {
            margin-top: 12px;
            font-size: 14px;
            color: var(--wh-text-muted);
            line-height: 1.8;
        }

        .wh-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 28px;
            align-items: flex-start;
        }

        .wh-footer-links a {
            color: #E8E6E0;
            font-size: 14px;
            transition: color var(--wh-transition);
        }

        .wh-footer-links a:hover {
            color: var(--wh-accent);
        }

        .wh-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--wh-text-muted);
        }

        .wh-footer-bottom a {
            color: #E8E6E0;
            font-size: 13px;
        }

        .wh-footer-bottom a:hover {
            color: var(--wh-accent);
        }

        /* 响应式断点 */
        @media (max-width: 991.98px) {
            .wh-nav-desktop {
                display: none;
            }
            .wh-nav-mobile {
                display: block;
            }
            .wh-data-card .wh-data-number {
                font-size: 38px;
            }
            .wh-cta-panel {
                padding: 32px 24px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --wh-section-padding: 40px;
            }
            .wh-page-hero {
                padding: 32px 0 24px;
                text-align: left;
            }
            .wh-page-hero h1 {
                font-size: 26px;
            }
            .wh-data-card .wh-data-visual img {
                height: 200px;
            }
            .wh-data-card .wh-data-body {
                padding: 20px;
            }
            .wh-data-card .wh-data-number {
                font-size: 32px;
            }
            .wh-chart-bar-group {
                height: 80px;
            }
            .wh-chart-bar {
                width: 22px;
            }
            .wh-footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .wh-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 575.98px) {
            .wh-page-hero h1 {
                font-size: 22px;
            }
            .wh-data-card .wh-data-visual img {
                height: 160px;
            }
            .wh-data-card .wh-data-number {
                font-size: 28px;
            }
            .wh-metric-item .wh-metric-value {
                font-size: 22px;
            }
            .wh-cta-panel h2 {
                font-size: 22px;
            }
            .wh-chart-bar-group {
                height: 60px;
                gap: 6px;
            }
            .wh-chart-bar {
                width: 16px;
            }
        }