/* roulang page: index */
:root {
            --mc-black: #141114;
            --mc-deep: #1C191D;
            --mc-white: #FFFFFF;
            --mc-bg: #F8F6F3;
            --mc-accent: #FF2D7A;
            --mc-coral: #FF4F5A;
            --mc-gold: #FFB547;
            --mc-text: #1A161B;
            --mc-secondary: #5C5A5F;
            --mc-muted: #8B888F;
            --mc-border: rgba(20, 17, 20, 0.08);
            --mc-border-light: rgba(255, 255, 255, 0.12);
            --mc-radius-sm: 8px;
            --mc-radius-md: 14px;
            --mc-radius-lg: 20px;
            --mc-shadow: 0 12px 30px rgba(20, 17, 20, 0.08);
            --mc-shadow-hover: 0 18px 40px rgba(20, 17, 20, 0.14);
            --mc-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --mc-transition: all 0.25s ease;
        }

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

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

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--mc-transition);
        }

        a:hover {
            text-decoration: none;
            color: var(--mc-accent);
        }

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

        .container {
            max-width: 1180px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Bootstrap 覆盖重置 ===== */
        .navbar {
            --bs-navbar-padding-y: 0.75rem;
            --bs-navbar-padding-x: 0;
            --bs-navbar-nav-link-padding-x: 1.1rem;
            background: var(--mc-white) !important;
            border-bottom: 1px solid var(--mc-border);
            box-shadow: 0 2px 16px rgba(20, 17, 20, 0.04);
            z-index: 1030;
        }

        .navbar .nav-link {
            color: var(--mc-secondary) !important;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0.75rem 1.1rem;
            position: relative;
            transition: var(--mc-transition);
            border-radius: var(--mc-radius-sm);
        }

        .navbar .nav-link:hover {
            color: var(--mc-accent) !important;
            background: rgba(255, 45, 122, 0.06);
        }

        .navbar .nav-link.active {
            color: var(--mc-accent) !important;
        }

        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            left: 1.1rem;
            right: 1.1rem;
            bottom: 0.4rem;
            height: 2px;
            background: var(--mc-accent);
            border-radius: 2px;
        }

        .navbar-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--mc-text) !important;
            letter-spacing: -0.01em;
        }

        .navbar-brand:hover {
            color: var(--mc-accent) !important;
        }

        .btn {
            --bs-btn-border-radius: 999px;
            --bs-btn-padding-x: 1.5rem;
            --bs-btn-padding-y: 0.6rem;
            --bs-btn-font-weight: 600;
            --bs-btn-font-size: 0.95rem;
            transition: var(--mc-transition);
            border: none;
        }

        .btn:focus {
            box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.25);
            outline: none;
        }

        .btn-primary {
            --bs-btn-bg: var(--mc-accent);
            --bs-btn-border-color: var(--mc-accent);
            --bs-btn-hover-bg: #e01e6a;
            --bs-btn-hover-border-color: #e01e6a;
            --bs-btn-active-bg: #c9185e;
            --bs-btn-active-border-color: #c9185e;
            --bs-btn-disabled-bg: var(--mc-accent);
            --bs-btn-disabled-border-color: var(--mc-accent);
            color: #fff;
        }

        .btn-outline-light-custom {
            background: transparent;
            color: var(--mc-text);
            border: 1px solid var(--mc-border);
            border-radius: 999px;
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--mc-transition);
        }

        .btn-outline-light-custom:hover {
            background: rgba(20, 17, 20, 0.05);
            color: var(--mc-text);
            border-color: rgba(20, 17, 20, 0.18);
        }

        .card {
            --bs-card-border-radius: var(--mc-radius-lg);
            --bs-card-border-width: 1px;
            --bs-card-border-color: var(--mc-border);
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            background: var(--mc-white);
        }

        .card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-5px);
        }

        .badge {
            --bs-badge-border-radius: 999px;
            --bs-badge-font-size: 0.7rem;
            --bs-badge-font-weight: 600;
            --bs-badge-padding-y: 0.35em;
            --bs-badge-padding-x: 0.7em;
        }

        .breadcrumb {
            --bs-breadcrumb-divider-color: var(--mc-muted);
            --bs-breadcrumb-item-active-color: var(--mc-accent);
            font-size: 0.85rem;
            margin-bottom: 0;
        }

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

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

        .accordion {
            --bs-accordion-border-radius: var(--mc-radius-md);
            --bs-accordion-inner-border-radius: var(--mc-radius-md);
            --bs-accordion-bg: var(--mc-white);
            --bs-accordion-border-color: var(--mc-border);
            --bs-accordion-btn-padding-x: 1.25rem;
            --bs-accordion-btn-padding-y: 1.1rem;
            --bs-accordion-body-padding-x: 1.25rem;
            --bs-accordion-body-padding-y: 1.1rem;
            --bs-accordion-active-bg: rgba(255, 45, 122, 0.04);
            --bs-accordion-active-color: var(--mc-accent);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.15);
            box-shadow: var(--mc-shadow);
        }

        .accordion-item {
            border: 1px solid var(--mc-border) !important;
            margin-bottom: 0.5rem;
            border-radius: var(--mc-radius-md) !important;
            overflow: hidden;
            background: var(--mc-white);
        }

        .accordion-button {
            font-weight: 700;
            font-size: 1rem;
            color: var(--mc-text);
            padding: 1.1rem 1.25rem;
            background: transparent;
        }

        .accordion-button:not(.collapsed) {
            color: var(--mc-accent);
            background: rgba(255, 45, 122, 0.04);
            box-shadow: none;
        }

        .accordion-button::after {
            filter: brightness(0) saturate(100%) invert(45%) sepia(11%) saturate(250%) hue-rotate(120deg);
        }

        .accordion-body {
            color: var(--mc-secondary);
            line-height: 1.9;
            font-size: 0.95rem;
        }

        .form-control {
            --bs-border-radius: 10px;
            --bs-border-color: var(--mc-border);
            --bs-body-bg: var(--mc-white);
            --bs-focus-border-color: var(--mc-accent);
            --bs-focus-box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.15);
            padding: 0.7rem 1rem;
            font-size: 0.95rem;
            color: var(--mc-text);
            border: 1px solid var(--mc-border);
            border-radius: 10px;
            transition: var(--mc-transition);
        }

        .form-control:focus {
            border-color: var(--mc-accent);
            box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.15);
            outline: none;
        }

        .form-control::placeholder {
            color: var(--mc-muted);
        }

        .form-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--mc-secondary);
            margin-bottom: 0.4rem;
        }

        /* ===== Header / Nav 自定义 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--mc-white);
            border-bottom: 1px solid var(--mc-border);
            box-shadow: 0 2px 16px rgba(20, 17, 20, 0.04);
        }

        .site-header .navbar {
            background: transparent !important;
            border: none;
            box-shadow: none;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.3rem;
            letter-spacing: -0.01em;
            color: var(--mc-text);
            transition: var(--mc-transition);
        }

        .logo-text:hover {
            color: var(--mc-accent);
        }

        .logo-badge {
            display: inline-block;
            background: var(--mc-accent);
            color: #fff;
            font-size: 0.6rem;
            font-weight: 700;
            padding: 0.15rem 0.5rem;
            border-radius: 999px;
            margin-left: 0.35rem;
            vertical-align: middle;
            letter-spacing: 0.03em;
        }

        /* ===== 移动端底部 Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1060;
            background: var(--mc-white);
            border-top: 1px solid var(--mc-border);
            box-shadow: 0 -2px 16px rgba(20, 17, 20, 0.08);
            padding: 0.5rem 0.25rem;
            padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
        }

        .mobile-bottom-tab .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .mobile-bottom-tab .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.2rem;
            font-size: 0.65rem;
            font-weight: 600;
            color: var(--mc-muted);
            padding: 0.3rem 0.6rem;
            border-radius: var(--mc-radius-sm);
            transition: var(--mc-transition);
        }

        .mobile-bottom-tab .tab-item i {
            font-size: 1.2rem;
        }

        .mobile-bottom-tab .tab-item.active {
            color: var(--mc-accent);
        }

        .mobile-bottom-tab .tab-item:hover {
            color: var(--mc-accent);
            background: rgba(255, 45, 122, 0.05);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 80vh;
            background: linear-gradient(135deg, rgba(20, 17, 20, 0.88) 0%, rgba(28, 25, 29, 0.82) 50%, rgba(20, 17, 20, 0.9) 100%), url('/assets/images/d971a82cb9119ab5.jpg') center center / cover no-repeat;
            display: flex;
            align-items: center;
            padding: 4rem 0 5rem;
            color: #fff;
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to bottom, transparent, var(--mc-bg));
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 181, 71, 0.18);
            color: var(--mc-gold);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 181, 71, 0.3);
            margin-bottom: 1.5rem;
            letter-spacing: 0.04em;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
            color: #fff;
            max-width: 640px;
            animation: fadeUp 0.7s ease-out;
        }

        .hero-subtitle {
            font-size: 1.02rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.9;
            max-width: 560px;
            margin-bottom: 2rem;
            animation: fadeUp 0.7s ease-out 0.1s both;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-bottom: 2.5rem;
            animation: fadeUp 0.7s ease-out 0.2s both;
        }

        .hero-actions .btn {
            padding: 0.7rem 1.8rem;
            font-size: 0.95rem;
        }

        .hero-actions .btn-outline-hero {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: 999px;
            padding: 0.7rem 1.8rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--mc-transition);
        }

        .hero-actions .btn-outline-hero:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .hero-quick-grid {
            background: rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--mc-radius-lg);
            padding: 1.5rem;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            animation: fadeUp 0.7s ease-out 0.3s both;
        }

        .hero-quick-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--mc-radius-md);
            padding: 1.2rem 1rem;
            text-align: center;
            transition: var(--mc-transition);
            cursor: pointer;
        }

        .hero-quick-item:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        .hero-quick-item i {
            font-size: 1.6rem;
            color: var(--mc-gold);
            margin-bottom: 0.5rem;
        }

        .hero-quick-item span {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 通用 Section ===== */
        .section {
            padding: 5rem 0;
        }

        .section-alt {
            background: var(--mc-white);
        }

        .section-dark {
            background: var(--mc-deep);
            color: #fff;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            line-height: 1.25;
            margin-bottom: 0.8rem;
            color: inherit;
        }

        .section-desc {
            font-size: 0.98rem;
            color: var(--mc-secondary);
            line-height: 1.9;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }

        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            color: var(--mc-accent);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 0.8rem;
        }

        /* ===== 服务矩阵 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 1.5rem;
        }

        .service-card {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-lg);
            padding: 1.8rem;
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            overflow: hidden;
            position: relative;
        }

        .service-card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-5px);
        }

        .service-card .card-img-wrapper {
            border-radius: var(--mc-radius-md);
            overflow: hidden;
            margin-bottom: 1.2rem;
            aspect-ratio: 16 / 10;
        }

        .service-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--mc-radius-md);
            transition: var(--mc-transition);
        }

        .service-card:hover .card-img-wrapper img {
            transform: scale(1.03);
        }

        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--mc-text);
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--mc-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .service-card .card-link {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--mc-accent);
            margin-top: 0.8rem;
        }

        /* ===== 优势数据 ===== */
        .stats-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-lg);
            overflow: hidden;
            box-shadow: var(--mc-shadow);
        }

        .stat-item {
            padding: 2rem 1.5rem;
            text-align: center;
            border-right: 1px solid var(--mc-border);
            transition: var(--mc-transition);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-item:hover {
            background: rgba(255, 45, 122, 0.03);
        }

        .stat-item i {
            font-size: 1.5rem;
            color: var(--mc-accent);
            margin-bottom: 0.8rem;
        }

        .stat-item .stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--mc-text);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 0.8rem;
            color: var(--mc-muted);
            margin-top: 0.4rem;
        }

        /* ===== 方案流程 ===== */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
            counter-reset: step;
        }

        .step-node {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-lg);
            padding: 1.8rem 1.2rem;
            text-align: center;
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            position: relative;
        }

        .step-node:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-4px);
        }

        .step-node .step-num {
            width: 40px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            background: var(--mc-accent);
            color: #fff;
            font-weight: 800;
            font-size: 1.05rem;
            border-radius: 50%;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 12px rgba(255, 45, 122, 0.3);
        }

        .step-node h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--mc-text);
        }

        .step-node p {
            font-size: 0.85rem;
            color: var(--mc-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== 案例墙 ===== */
        .case-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            grid-auto-rows: auto;
            gap: 1.2rem;
        }

        .case-card {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-lg);
            overflow: hidden;
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-5px);
        }

        .case-card .case-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            margin: 0;
        }

        .case-card .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--mc-transition);
        }

        .case-card:hover .case-img img {
            transform: scale(1.04);
        }

        .case-card .case-body {
            padding: 1.2rem 1.3rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .case-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--mc-text);
        }

        .case-card .case-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: auto;
            font-size: 0.75rem;
            color: var(--mc-muted);
        }

        .case-card .case-meta .badge-tag {
            background: rgba(255, 181, 71, 0.15);
            color: #b0741a;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.6rem;
            border-radius: 999px;
        }

        .case-card:nth-child(2) {
            grid-row: span 2;
        }

        .case-card:nth-child(2) .case-img {
            aspect-ratio: 16 / 18;
        }

        /* ===== 专题精选 ===== */
        .topic-scroll {
            display: flex;
            gap: 1.2rem;
            overflow-x: auto;
            padding-bottom: 1rem;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .topic-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .topic-scroll::-webkit-scrollbar-track {
            background: var(--mc-border);
            border-radius: 6px;
        }

        .topic-scroll::-webkit-scrollbar-thumb {
            background: var(--mc-muted);
            border-radius: 6px;
        }

        .topic-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-lg);
            overflow: hidden;
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
        }

        .topic-card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-4px);
        }

        .topic-card .topic-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--mc-transition);
        }

        .topic-card:hover .topic-img img {
            transform: scale(1.04);
        }

        .topic-card .topic-body {
            padding: 1.1rem 1.2rem;
        }

        .topic-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--mc-text);
            margin-bottom: 0.4rem;
        }

        .topic-card p {
            font-size: 0.85rem;
            color: var(--mc-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 资讯列表 CMS ===== */
        .news-list-area {
            background: var(--mc-bg);
            border-radius: var(--mc-radius-lg);
            padding: 2rem;
            border: 1px solid var(--mc-border);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.2rem;
        }

        .news-card {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-md);
            padding: 1.3rem 1.2rem;
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .news-card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-4px);
        }

        .news-card .news-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--mc-text);
            line-height: 1.45;
            transition: var(--mc-transition);
        }

        .news-card .news-title:hover {
            color: var(--mc-accent);
        }

        .news-card .news-summary {
            font-size: 0.82rem;
            color: var(--mc-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 0;
        }

        .news-card .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.72rem;
            color: var(--mc-muted);
            padding-top: 0.5rem;
            border-top: 1px solid var(--mc-border);
        }

        .news-card .news-cat {
            background: rgba(255, 45, 122, 0.08);
            color: var(--mc-accent);
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: 999px;
            font-size: 0.7rem;
        }

        .empty-state {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--mc-muted);
            font-size: 0.95rem;
            border: 1px dashed var(--mc-border);
            border-radius: var(--mc-radius-md);
            background: var(--mc-white);
        }

        /* ===== 合作伙伴 ===== */
        .partner-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            justify-content: center;
            align-items: center;
            padding: 2rem 0;
        }

        .partner-chip {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: 999px;
            padding: 0.7rem 1.4rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--mc-muted);
            transition: var(--mc-transition);
            letter-spacing: 0.02em;
        }

        .partner-chip:hover {
            border-color: rgba(20, 17, 20, 0.18);
            color: var(--mc-secondary);
            background: rgba(20, 17, 20, 0.03);
        }

        /* ===== 设备兼容 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.2rem;
        }

        .tip-item {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-md);
            padding: 1.5rem 1.3rem;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
        }

        .tip-item:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-3px);
        }

        .tip-item i {
            font-size: 1.4rem;
            color: var(--mc-accent);
            margin-top: 0.2rem;
        }

        .tip-item h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
            color: var(--mc-text);
        }

        .tip-item p {
            font-size: 0.85rem;
            color: var(--mc-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 保障条 ===== */
        .guarantee-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        .guarantee-item {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-md);
            padding: 1.4rem 1.2rem;
            text-align: center;
            transition: var(--mc-transition);
        }

        .guarantee-item:hover {
            border-color: rgba(255, 45, 122, 0.3);
            box-shadow: var(--mc-shadow);
        }

        .guarantee-item i {
            font-size: 1.3rem;
            color: var(--mc-gold);
            margin-bottom: 0.6rem;
        }

        .guarantee-item span {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--mc-text);
        }

        .guarantee-item small {
            display: block;
            font-size: 0.75rem;
            color: var(--mc-muted);
            margin-top: 0.3rem;
        }

        /* ===== CTA 收口 ===== */
        .cta-panel {
            background: linear-gradient(135deg, var(--mc-deep) 0%, var(--mc-black) 100%);
            border-radius: var(--mc-radius-lg);
            padding: 3.5rem 2.5rem;
            color: #fff;
            box-shadow: var(--mc-shadow-hover);
        }

        .cta-panel h2 {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            margin-bottom: 1rem;
            color: #fff;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 520px;
        }

        .cta-panel .form-row {
            display: flex;
            gap: 0.8rem;
            align-items: flex-end;
            flex-wrap: wrap;
        }

        .cta-panel .form-group {
            flex: 1;
            min-width: 200px;
        }

        .cta-panel .form-label {
            color: rgba(255, 255, 255, 0.6);
        }

        .cta-panel .form-control {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .cta-panel .form-control::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        .cta-panel .form-control:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--mc-accent);
            box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.25);
            color: #fff;
        }

        .cta-panel .btn-primary {
            background: var(--mc-accent);
            border-color: var(--mc-accent);
            padding: 0.7rem 2rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--mc-black);
            color: rgba(255, 255, 255, 0.6);
            padding: 3.5rem 0 4.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-footer .footer-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
        }

        .site-footer .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
            max-width: 360px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 0.5rem;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: var(--mc-transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .mobile-bottom-tab {
                display: block;
            }

            body {
                padding-bottom: 70px;
            }

            .site-header .navbar-nav {
                display: none !important;
            }

            .site-header .navbar {
                justify-content: center;
            }

            .hero {
                min-height: auto;
                padding: 5rem 0 6rem;
            }

            .hero h1 {
                font-size: 2.2rem;
                max-width: 100%;
            }

            .hero-subtitle {
                font-size: 0.95rem;
                max-width: 100%;
            }

            .hero-quick-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 2rem;
            }

            .service-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }

            .service-grid .service-card:first-child {
                grid-column: 1 / -1;
            }

            .stats-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .stat-item:nth-child(2) {
                border-right: none;
            }

            .stat-item:nth-child(1),
            .stat-item:nth-child(2) {
                border-bottom: 1px solid var(--mc-border);
            }

            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .case-wall {
                grid-template-columns: repeat(2, 1fr);
            }

            .case-card:nth-child(2) {
                grid-row: auto;
            }

            .case-card:nth-child(2) .case-img {
                aspect-ratio: 16 / 10;
            }

            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .tips-grid {
                grid-template-columns: 1fr;
            }

            .guarantee-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }

            .section {
                padding: 3.5rem 0;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .cta-panel {
                padding: 2.5rem 1.8rem;
            }

            .site-footer {
                padding-bottom: 5rem;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero {
                padding: 4rem 0 5rem;
            }

            .hero h1 {
                font-size: 1.75rem;
                line-height: 1.3;
            }

            .hero-subtitle {
                font-size: 0.9rem;
                line-height: 1.75;
            }

            .hero-actions {
                flex-direction: column;
                gap: 0.6rem;
            }

            .hero-actions .btn,
            .hero-actions .btn-outline-hero {
                width: 100%;
                text-align: center;
            }

            .hero-quick-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.7rem;
                padding: 1rem;
            }

            .hero-quick-item {
                padding: 0.9rem 0.6rem;
            }

            .hero-quick-item i {
                font-size: 1.2rem;
            }

            .hero-quick-item span {
                font-size: 0.75rem;
            }

            .section-title {
                font-size: 1.45rem;
            }

            .section-desc {
                font-size: 0.9rem;
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .service-grid .service-card:first-child {
                grid-column: auto;
            }

            .stats-list {
                grid-template-columns: 1fr 1fr;
            }

            .stat-item {
                padding: 1.2rem 0.8rem;
            }

            .stat-item .stat-value {
                font-size: 1.3rem;
            }

            .steps-flow {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }

            .case-wall {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }

            .case-card:nth-child(2) .case-img {
                aspect-ratio: 16 / 10;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }

            .partner-row {
                gap: 0.7rem;
            }

            .partner-chip {
                padding: 0.5rem 1rem;
                font-size: 0.78rem;
            }

            .tips-grid {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }

            .guarantee-strip {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }

            .cta-panel {
                padding: 2rem 1.3rem;
            }

            .cta-panel h2 {
                font-size: 1.5rem;
            }

            .cta-panel .form-row {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-panel .form-group {
                min-width: auto;
            }

            .cta-panel .form-control {
                width: 100%;
            }

            .cta-panel .btn-primary {
                width: 100%;
            }

            .news-list-area {
                padding: 1.2rem;
            }

            .topic-card {
                flex: 0 0 260px;
            }

            .section {
                padding: 3rem 0;
            }

            .site-footer {
                padding: 2.5rem 0 4.5rem;
            }

            .logo-text {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 519.98px) {
            .hero h1 {
                font-size: 1.5rem;
            }

            .hero-quick-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
                padding: 0.8rem;
            }

            .hero-quick-item {
                padding: 0.7rem 0.4rem;
            }

            .hero-quick-item i {
                font-size: 1rem;
                margin-bottom: 0.3rem;
            }

            .hero-quick-item span {
                font-size: 0.7rem;
            }

            .stats-list {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .stat-item {
                border-right: none !important;
                border-bottom: 1px solid var(--mc-border);
                padding: 1rem 0.6rem;
            }

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

            .guarantee-strip {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .section-tag {
                font-size: 0.65rem;
            }

            .topic-card {
                flex: 0 0 230px;
            }

            .mobile-bottom-tab .tab-item {
                font-size: 0.58rem;
                padding: 0.25rem 0.4rem;
            }

            .mobile-bottom-tab .tab-item i {
                font-size: 1rem;
            }

            .cta-panel h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: article */
:root {
            --mc-black: #141114;
            --mc-deep: #1C191D;
            --mc-white: #FFFFFF;
            --mc-bg: #F8F6F3;
            --mc-accent: #FF2D7A;
            --mc-coral: #FF4F5A;
            --mc-gold: #FFB547;
            --mc-text: #1A161B;
            --mc-secondary: #5C5A5F;
            --mc-muted: #8B888F;
            --mc-border: rgba(20, 17, 20, 0.08);
            --mc-border-light: rgba(255, 255, 255, 0.12);
            --mc-radius-sm: 8px;
            --mc-radius-md: 14px;
            --mc-radius-lg: 20px;
            --mc-shadow: 0 12px 30px rgba(20, 17, 20, 0.08);
            --mc-shadow-hover: 0 18px 40px rgba(20, 17, 20, 0.14);
            --mc-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --mc-transition: all 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--mc-font);
            color: var(--mc-text);
            background: var(--mc-bg);
            line-height: 1.8;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--mc-transition);
        }
        a:hover {
            text-decoration: none;
            color: var(--mc-accent);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1180px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }
        /* Bootstrap 覆盖重置 */
        .navbar {
            --bs-navbar-padding-y: 0.75rem;
            --bs-navbar-padding-x: 0;
            --bs-navbar-nav-link-padding-x: 1.1rem;
            background: var(--mc-white) !important;
            border-bottom: 1px solid var(--mc-border);
            box-shadow: 0 2px 16px rgba(20, 17, 20, 0.04);
            z-index: 1030;
        }
        .navbar .nav-link {
            color: var(--mc-secondary) !important;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0.75rem 1.1rem;
            position: relative;
            transition: var(--mc-transition);
            border-radius: var(--mc-radius-sm);
        }
        .navbar .nav-link:hover {
            color: var(--mc-accent) !important;
            background: rgba(255, 45, 122, 0.06);
        }
        .navbar .nav-link.active {
            color: var(--mc-accent) !important;
        }
        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            left: 1.1rem;
            right: 1.1rem;
            bottom: 0.4rem;
            height: 2px;
            background: var(--mc-accent);
            border-radius: 2px;
        }
        .navbar-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--mc-text) !important;
            letter-spacing: -0.01em;
        }
        .navbar-brand:hover {
            color: var(--mc-accent) !important;
        }
        .btn {
            --bs-btn-border-radius: 999px;
            --bs-btn-padding-x: 1.5rem;
            --bs-btn-padding-y: 0.6rem;
            --bs-btn-font-weight: 600;
            --bs-btn-font-size: 0.95rem;
            transition: var(--mc-transition);
            border: none;
        }
        .btn:focus {
            box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.25);
            outline: none;
        }
        .btn-primary {
            --bs-btn-bg: var(--mc-accent);
            --bs-btn-border-color: var(--mc-accent);
            --bs-btn-hover-bg: #e01e6a;
            --bs-btn-hover-border-color: #e01e6a;
            --bs-btn-active-bg: #c9185e;
            --bs-btn-active-border-color: #c9185e;
            --bs-btn-disabled-bg: var(--mc-accent);
            --bs-btn-disabled-border-color: var(--mc-accent);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--mc-text);
            border: 1px solid var(--mc-border);
            border-radius: 999px;
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--mc-transition);
        }
        .btn-outline-custom:hover {
            background: rgba(20, 17, 20, 0.05);
            color: var(--mc-text);
            border-color: rgba(20, 17, 20, 0.18);
        }
        .card {
            --bs-card-border-radius: var(--mc-radius-lg);
            --bs-card-border-width: 1px;
            --bs-card-border-color: var(--mc-border);
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            background: var(--mc-white);
        }
        .card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-5px);
        }
        .badge {
            --bs-badge-border-radius: 999px;
            --bs-badge-font-size: 0.7rem;
            --bs-badge-font-weight: 600;
            --bs-badge-padding-y: 0.35em;
            --bs-badge-padding-x: 0.7em;
        }
        .breadcrumb a {
            color: var(--mc-secondary);
        }
        .breadcrumb a:hover {
            color: var(--mc-accent);
        }
        .accordion-item {
            border: 1px solid var(--mc-border) !important;
            margin-bottom: 0.5rem;
            border-radius: var(--mc-radius-md) !important;
            overflow: hidden;
            background: var(--mc-white);
        }
        .accordion-button {
            font-weight: 700;
            font-size: 1rem;
            color: var(--mc-text);
            padding: 1.1rem 1.25rem;
            background: transparent;
        }
        .accordion-button:not(.collapsed) {
            color: var(--mc-accent);
            background: rgba(255, 45, 122, 0.04);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--mc-border);
        }
        .form-control {
            border-radius: 8px;
            border: 1px solid var(--mc-border);
            padding: 0.6rem 1rem;
            font-size: 0.95rem;
        }
        .form-control:focus {
            border-color: var(--mc-accent);
            box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.15);
        }
        /* 文章页专属样式 */
        .site-header {
            position: sticky;
            top: 0;
            background: var(--mc-white);
        }
        .article-main {
            padding: 3rem 0;
            background: var(--mc-bg);
        }
        .article-meta-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 1.5rem;
            margin-top: 1rem;
            color: var(--mc-muted);
            font-size: 0.85rem;
        }
        .article-meta-bar .badge {
            background: rgba(255, 45, 122, 0.1);
            color: var(--mc-accent);
            font-size: 0.75rem;
        }
        .article-cover {
            border-radius: var(--mc-radius-lg);
            overflow: hidden;
            box-shadow: var(--mc-shadow);
            margin: 2rem 0;
            background: var(--mc-white);
        }
        .article-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/9;
        }
        .article-content {
            max-width: 760px;
            margin: 0 auto;
            padding: 0 20px;
            font-size: 1rem;
            line-height: 2;
            color: var(--mc-text);
        }
        .article-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            color: var(--mc-black);
        }
        .article-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 1.5rem 0 0.75rem;
        }
        .article-content p {
            margin-bottom: 1.25rem;
        }
        .article-content img {
            border-radius: var(--mc-radius-md);
            margin: 1.5rem 0;
        }
        .article-content blockquote {
            border-left: 4px solid var(--mc-accent);
            padding: 0.75rem 1.25rem;
            background: rgba(255, 45, 122, 0.04);
            border-radius: 0 var(--mc-radius-md) var(--mc-radius-md) 0;
            margin: 1.5rem 0;
            color: var(--mc-secondary);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-nav-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--mc-border);
        }
        .article-nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--mc-secondary);
            padding: 0.5rem 0;
        }
        .article-nav-links a:hover {
            color: var(--mc-accent);
        }
        .related-card,
        .news-item {
            transition: var(--mc-transition);
        }
        .related-card:hover .related-title,
        .news-item:hover .news-title {
            color: var(--mc-accent);
        }
        .related-card .card-img-top {
            height: 160px;
            object-fit: cover;
            border-top-left-radius: var(--mc-radius-lg);
            border-top-right-radius: var(--mc-radius-lg);
        }
        .news-list {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-lg);
            overflow: hidden;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.75rem 1.25rem;
            border-bottom: 1px solid var(--mc-border);
            color: var(--mc-text);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: rgba(20, 17, 20, 0.02);
        }
        .news-thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--mc-radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-title {
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            margin-bottom: 0.1rem;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            font-size: 0.75rem;
            color: var(--mc-muted);
        }
        .subscribe-section {
            background: var(--mc-deep);
            border-radius: var(--mc-radius-lg);
            padding: 2.5rem;
            color: #fff;
            margin-top: 2rem;
            text-align: center;
        }
        .subscribe-section h2 {
            color: #fff;
            font-weight: 700;
        }
        .subscribe-section .form-control {
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.25);
            color: #fff;
        }
        .subscribe-section .form-control::placeholder {
            color: rgba(255,255,255,0.7);
        }
        .subscribe-section .btn-primary {
            background: var(--mc-accent);
        }
        .empty-state {
            text-align: center;
            padding: 2rem 1rem;
            color: var(--mc-muted);
            background: rgba(20,17,20,0.03);
            border-radius: var(--mc-radius-md);
            margin: 1rem 0;
        }
        .site-footer {
            background: var(--mc-black);
            color: rgba(255,255,255,0.75);
            padding: 3.5rem 0 2rem;
            margin-top: 3rem;
        }
        .site-footer a {
            color: rgba(255,255,255,0.75);
        }
        .site-footer a:hover {
            color: var(--mc-accent);
        }
        .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 400px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            font-size: 0.85rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.55);
        }
        /* 移动端底部导航 */
        @media (max-width: 991.98px) {
            .navbar .navbar-nav {
                display: none !important;
            }
            .navbar .btn-primary {
                display: none !important;
            }
            .mobile-bottom-nav {
                display: flex !important;
            }
        }
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--mc-white);
            border-top: 1px solid var(--mc-border);
            box-shadow: 0 -2px 10px rgba(20,17,20,0.06);
            z-index: 1040;
            padding: 0.25rem 0;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.2rem;
            font-size: 0.7rem;
            color: var(--mc-secondary);
            font-weight: 600;
            padding: 0.5rem 0;
            flex: 1;
            text-align: center;
        }
        .mobile-bottom-nav a i {
            font-size: 1.25rem;
        }
        .mobile-bottom-nav a.active {
            color: var(--mc-accent);
        }
        body {
            padding-bottom: 64px; /* 为移动端底部导航留出空间 */
        }

/* roulang page: category1 */
:root {
            --mc-black: #141114;
            --mc-deep: #1C191D;
            --mc-white: #FFFFFF;
            --mc-bg: #F8F6F3;
            --mc-accent: #FF2D7A;
            --mc-coral: #FF4F5A;
            --mc-gold: #FFB547;
            --mc-text: #1A161B;
            --mc-secondary: #5C5A5F;
            --mc-muted: #8B888F;
            --mc-border: rgba(20, 17, 20, 0.08);
            --mc-border-light: rgba(255, 255, 255, 0.12);
            --mc-radius-sm: 8px;
            --mc-radius-md: 14px;
            --mc-radius-lg: 20px;
            --mc-shadow: 0 12px 30px rgba(20, 17, 20, 0.08);
            --mc-shadow-hover: 0 18px 40px rgba(20, 17, 20, 0.14);
            --mc-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --mc-transition: all 0.25s ease;
        }

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

        body {
            font-family: var(--mc-font);
            color: var(--mc-text);
            background: var(--mc-bg);
            line-height: 1.8;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
        }

        @media (max-width: 991.98px) {
            body {
                padding-bottom: 72px;
            }
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--mc-transition);
        }

        a:hover {
            text-decoration: none;
            color: var(--mc-accent);
        }

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

        .container {
            max-width: 1180px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Bootstrap 覆盖重置 ===== */
        .navbar {
            --bs-navbar-padding-y: 0.75rem;
            --bs-navbar-padding-x: 0;
            --bs-navbar-nav-link-padding-x: 1.1rem;
            background: var(--mc-white) !important;
            border-bottom: 1px solid var(--mc-border);
            box-shadow: 0 2px 16px rgba(20, 17, 20, 0.04);
            z-index: 1030;
        }

        .navbar .nav-link {
            color: var(--mc-secondary) !important;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0.75rem 1.1rem;
            position: relative;
            transition: var(--mc-transition);
            border-radius: var(--mc-radius-sm);
        }

        .navbar .nav-link:hover {
            color: var(--mc-accent) !important;
            background: rgba(255, 45, 122, 0.06);
        }

        .navbar .nav-link.active {
            color: var(--mc-accent) !important;
        }

        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            left: 1.1rem;
            right: 1.1rem;
            bottom: 0.4rem;
            height: 2px;
            background: var(--mc-accent);
            border-radius: 2px;
        }

        .navbar-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--mc-text) !important;
            letter-spacing: -0.01em;
        }

        .navbar-brand:hover {
            color: var(--mc-accent) !important;
        }

        .btn {
            --bs-btn-border-radius: 999px;
            --bs-btn-padding-x: 1.5rem;
            --bs-btn-padding-y: 0.6rem;
            --bs-btn-font-weight: 600;
            --bs-btn-font-size: 0.95rem;
            transition: var(--mc-transition);
            border: none;
        }

        .btn:focus {
            box-shadow: 0 0 0 3px rgba(255, 45, 122, 0.25);
            outline: none;
        }

        .btn-primary {
            --bs-btn-bg: var(--mc-accent);
            --bs-btn-border-color: var(--mc-accent);
            --bs-btn-hover-bg: #e01e6a;
            --bs-btn-hover-border-color: #e01e6a;
            --bs-btn-active-bg: #c9185e;
            --bs-btn-active-border-color: #c9185e;
            --bs-btn-disabled-bg: var(--mc-accent);
            --bs-btn-disabled-border-color: var(--mc-accent);
            color: #fff;
        }

        .btn-outline-light-custom {
            background: transparent;
            color: var(--mc-text);
            border: 1px solid var(--mc-border);
            border-radius: 999px;
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--mc-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-light-custom:hover {
            background: rgba(20, 17, 20, 0.05);
            color: var(--mc-text);
            border-color: rgba(20, 17, 20, 0.18);
        }

        .card {
            --bs-card-border-radius: var(--mc-radius-lg);
            --bs-card-border-width: 1px;
            --bs-card-border-color: var(--mc-border);
            box-shadow: var(--mc-shadow);
            transition: var(--mc-transition);
            background: var(--mc-white);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--mc-shadow-hover);
            transform: translateY(-5px);
        }

        .badge {
            --bs-badge-border-radius: 999px;
            --bs-badge-font-size: 0.7rem;
            --bs-badge-font-weight: 600;
            --bs-badge-padding-y: 0.35em;
            --bs-badge-padding-x: 0.7em;
        }

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

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

        /* ===== 页面通用 Section ===== */
        .section-box {
            padding: 4.5rem 0;
        }

        .section-box-sm {
            padding: 3rem 0;
        }

        .section-alt {
            background: var(--mc-white);
        }

        .section-dark {
            background: var(--mc-deep);
            color: #fff;
        }

        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--mc-accent);
            background: rgba(255, 45, 122, 0.08);
            padding: 0.35rem 0.85rem;
            border-radius: 999px;
            margin-bottom: 0.75rem;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--mc-text);
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }

        .section-sub {
            font-size: 1rem;
            color: var(--mc-secondary);
            line-height: 1.9;
            max-width: 680px;
        }

        /* ===== 分类页专用 ===== */
        .cat-hero {
            padding: 3rem 0 2rem;
            background: var(--mc-white);
            border-bottom: 1px solid var(--mc-border);
        }

        .cat-hero .breadcrumb {
            margin-bottom: 1.25rem;
        }

        .cat-hero h1 {
            font-size: 2.75rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--mc-text);
            line-height: 1.25;
            margin-bottom: 0.85rem;
        }

        .cat-hero p {
            font-size: 1rem;
            color: var(--mc-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 1rem 0;
        }

        .filter-tabs .tab-btn {
            border: 1px solid var(--mc-border);
            background: var(--mc-white);
            color: var(--mc-secondary);
            border-radius: 999px;
            padding: 0.55rem 1.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--mc-transition);
            white-space: nowrap;
        }

        .filter-tabs .tab-btn:hover {
            border-color: var(--mc-accent);
            color: var(--mc-accent);
            background: rgba(255, 45, 122, 0.04);
        }

        .filter-tabs .tab-btn.active {
            background: var(--mc-accent);
            color: #fff;
            border-color: var(--mc-accent);
        }

        .video-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1C191D;
        }

        .video-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .video-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .video-card .card-body {
            padding: 1.25rem 1.35rem 1.35rem;
        }

        .video-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--mc-text);
            line-height: 1.45;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .video-card .card-text {
            font-size: 0.85rem;
            color: var(--mc-secondary);
            line-height: 1.7;
            margin-bottom: 0.85rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .video-card .card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 0.75rem;
            color: var(--mc-muted);
        }

        .video-card .badge-tag {
            background: rgba(255, 180, 71, 0.15);
            color: #B87A1E;
            padding: 0.25rem 0.65rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.7rem;
        }

        .scenario-card {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: var(--mc-radius-md);
            padding: 1.5rem 1.6rem;
            height: 100%;
            transition: var(--mc-transition);
            display: block;
        }

        .scenario-card:hover {
            border-color: rgba(255, 45, 122, 0.3);
            box-shadow: var(--mc-shadow);
            transform: translateY(-4px);
            color: var(--mc-text);
        }

        .scenario-card .scenario-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 45, 122, 0.08);
            color: var(--mc-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 0.85rem;
        }

        .scenario-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--mc-text);
            margin-bottom: 0.4rem;
        }

        .scenario-card p {
            font-size: 0.85rem;
            color: var(--mc-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            background: var(--mc-white);
            border: 1px solid var(--mc-border);
            border-radius: 999px;
            padding: 0.5rem 1.15rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--mc-secondary);
            transition: var(--mc-transition);
        }

        .tag-cloud a:hover {
            background: rgba(255, 45, 122, 0.06);
            border-color: var(--mc-accent);
            color: var(--mc-accent);
        }

        .data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-between;
        }

        .data-strip .data-item {
            flex: 1;
            min-width: 160px;
        }

        .data-strip .data-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--mc-accent);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .data-strip .data-label {
            font-size: 0.85rem;
            color: var(--mc-secondary);
            margin-top: 0.25rem;
        }

        .light-cta {
            background: var(--mc-deep);
            border-radius: var(--mc-radius-lg);
            padding: 2.5rem 2.75rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
        }

        .light-cta h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.3rem;
            letter-spacing: -0.01em;
        }

        .light-cta p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
        }

        .btn-light-custom {
            background: #fff;
            color: var(--mc-text);
            border-radius: 999px;
            padding: 0.7rem 2rem;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            transition: var(--mc-transition);
            white-space: nowrap;
        }

        .btn-light-custom:hover {
            background: var(--mc-gold);
            color: var(--mc-black);
        }

        /* ===== 空态 ===== */
        .empty-state {
            text-align: center;
            padding: 3rem 1.5rem;
            background: var(--mc-white);
            border: 1px dashed var(--mc-border);
            border-radius: var(--mc-radius-lg);
            color: var(--mc-muted);
            font-size: 0.95rem;
        }

        /* ===== 底部 Tab ===== */
        .bottom-tab-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--mc-white);
            border-top: 1px solid var(--mc-border);
            z-index: 1050;
            display: none;
            padding: 0.45rem 1rem 0.55rem;
            box-shadow: 0 -6px 24px rgba(20, 17, 20, 0.08);
        }

        @media (max-width: 991.98px) {
            .bottom-tab-nav {
                display: flex;
                align-items: center;
                justify-content: space-around;
            }
        }

        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.68rem;
            font-weight: 600;
            color: var(--mc-muted);
            padding: 0.35rem 1.2rem;
            border-radius: var(--mc-radius-sm);
            transition: var(--mc-transition);
        }

        .bottom-tab-nav a i {
            font-size: 1.25rem;
        }

        .bottom-tab-nav a:hover {
            color: var(--mc-accent);
            background: rgba(255, 45, 122, 0.05);
        }

        .bottom-tab-nav a.active {
            color: var(--mc-accent);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--mc-black);
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 2rem;
            margin-top: 0;
        }

        @media (max-width: 991.98px) {
            .site-footer {
                padding-bottom: 1.25rem;
            }
        }

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.9rem;
            letter-spacing: -0.01em;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 340px;
            margin-bottom: 0;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 0.55rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--mc-transition);
        }

        .footer-links a:hover {
            color: var(--mc-gold);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .section-box {
                padding: 3rem 0;
            }
            .section-box-sm {
                padding: 2.25rem 0;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .cat-hero h1 {
                font-size: 1.9rem;
            }
            .light-cta {
                padding: 2rem 1.5rem;
                flex-direction: column;
                text-align: center;
            }
            .data-strip {
                gap: 1.25rem;
            }
            .data-strip .data-num {
                font-size: 1.65rem;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .cat-hero h1 {
                font-size: 1.6rem;
            }
            .cat-hero {
                padding: 2rem 0 1.5rem;
            }
            .video-card .card-body {
                padding: 1rem 1.1rem 1.15rem;
            }
            .filter-tabs .tab-btn {
                padding: 0.45rem 1rem;
                font-size: 0.82rem;
            }
            .light-cta h2 {
                font-size: 1.35rem;
            }
            .data-strip {
                flex-direction: column;
                gap: 1rem;
            }
            .data-strip .data-item {
                min-width: 0;
                display: flex;
                align-items: center;
                gap: 1rem;
            }
            .data-strip .data-num {
                font-size: 1.5rem;
                min-width: 70px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}