/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00A6A6;
            --primary-rgb: 0, 166, 166;
            --primary-dark: #008B8B;
            --accent: #FF6B4A;
            --accent-dark: #E85A3D;
            --bg-dark: #1B1E24;
            --bg-page: #F7F5F0;
            --bg-card: #FFFFFF;
            --bg-soft: #EFEDE8;
            --text-main: #1C1D21;
            --text-muted: #6B6F76;
            --border-color: #E5E1D8;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 2px 8px rgba(28, 29, 33, 0.04);
            --shadow-hover: 0 8px 24px rgba(28, 29, 33, 0.08);
            --shadow-accent: 0 8px 20px rgba(255, 107, 74, 0.3);
            --transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "DIN Alternate", "Roboto", sans-serif;
            --bs-primary: #00A6A6;
            --bs-primary-rgb: 0, 166, 166;
            --bs-link-color: #00A6A6;
            --bs-link-hover-color: #008B8B;
            --bs-body-font-family: var(--font-sans);
            --bs-body-bg: var(--bg-page);
            --bs-body-color: var(--text-main);
            --bs-border-radius: 8px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background: var(--bg-page);
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            margin-bottom: 0.5em;
            font-family: var(--font-sans);
            color: var(--text-main);
            line-height: 1.3;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        :focus-visible {
            outline: 3px solid rgba(0, 166, 166, 0.4);
            outline-offset: 2px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            --bs-gutter-x: 24px;
        }
        .container-narrow {
            max-width: 760px;
            margin: 0 auto;
        }
        .section {
            padding: 88px 0;
        }
        .section-sm {
            padding: 56px 0;
        }
        .section-head {
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            padding: 4px 12px;
            background: rgba(0, 166, 166, 0.08);
            border-radius: 20px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: saturate(1.2);
            -webkit-backdrop-filter: saturate(1.2);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(28, 29, 33, 0.04);
        }
        .site-header .navbar {
            min-height: 68px;
            padding: 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            transition: var(--transition);
        }
        .brand-logo:hover {
            color: var(--primary);
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            position: relative;
        }
        .brand-logo .logo-icon::before {
            content: "";
            width: 18px;
            height: 18px;
            border: 2px solid #fff;
            border-radius: 4px;
            transform: rotate(45deg);
            position: absolute;
        }
        .brand-logo .logo-icon::after {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 2px;
            position: absolute;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 16px;
            position: relative;
            transition: var(--transition);
        }
        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary);
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-search {
            position: relative;
            width: 200px;
        }
        .navbar-search .form-control {
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: var(--bg-page);
            padding-left: 38px;
            font-size: 14px;
            transition: var(--transition);
        }
        .navbar-search .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 166, 166, 0.15);
            background: #fff;
        }
        .navbar-search .search-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 15px;
        }
        .btn-login-header {
            height: 40px;
            padding: 0 20px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-login-header:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }
        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            font-size: 22px;
            color: var(--text-main);
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(90deg, rgba(27, 30, 36, 0.93) 0%, rgba(27, 30, 36, 0.68) 45%, rgba(27, 30, 36, 0.25) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 100px 0 80px;
            color: #fff;
            min-height: 640px;
            display: flex;
            align-items: center;
        }
        .hero .container {
            width: 100%;
        }
        .hero-content {
            max-width: 620px;
            animation: fadeUp 0.6s ease forwards;
            opacity: 0;
        }
        .hero-cover-wrap {
            animation: fadeUp 0.6s ease 0.2s forwards;
            opacity: 0;
        }
        .hero h1 {
            font-size: 46px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: #fff;
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            color: #4DD6D6;
            position: relative;
        }
        .hero-sub {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
            background: var(--primary);
            color: #fff;
        }
        .btn-main:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transform: translateY(-1px);
        }
        .btn-outline-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
        }
        .btn-outline-main:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-hero-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
            background: var(--accent);
            color: #fff;
        }
        .btn-hero-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transform: translateY(-1px);
        }
        .hero-cover {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
            min-height: 320px;
        }
        .hero-live-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(27, 30, 36, 0.85);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-live-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            position: relative;
        }
        .hero-live-badge .dot::after {
            content: "";
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: rgba(0, 166, 166, 0.3);
            animation: pulse 2s infinite;
        }
        .hero-stats {
            margin-top: 64px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 32px;
        }
        .hero-stats .stat-item {
            text-align: left;
            position: relative;
        }
        .hero-stats .stat-value {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        .hero-stats .col-lg-3:not(:first-child) .stat-item {
            padding-left: 24px;
        }
        .hero-stats .col-lg-3:not(:first-child) .stat-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 36px;
            background: rgba(255, 255, 255, 0.2);
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @keyframes pulse {
            0% {
                transform: scale(1);
                opacity: 1;
            }
            100% {
                transform: scale(1.6);
                opacity: 0;
            }
        }

        /* ===== 功能分组 ===== */
        .features-section {
            background: var(--bg-page);
            padding: 88px 0;
        }
        .feature-card-large {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .feature-card-large:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .feature-card-large .feature-img {
            height: 100%;
            min-height: 220px;
            object-fit: cover;
            border-radius: 0;
        }
        .feature-card-large .feature-body {
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-card-large .feature-icon-large {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 166, 166, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .feature-card-large h3 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .feature-card-large p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-card-large .feature-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .feature-card-large .feature-link i {
            transition: transform 0.25s;
        }
        .feature-card-large .feature-link:hover i {
            transform: translateX(4px);
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 166, 166, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .feature-card .feature-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .feature-card .feature-link:hover {
            gap: 8px;
        }

        /* ===== 使用场景 ===== */
        .scenarios-section {
            background: var(--bg-white);
            padding: 88px 0;
            background-color: #fff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .scenarios-sticky {
            position: sticky;
            top: 120px;
        }
        .scenarios-sticky h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .scenarios-sticky p {
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .scenario-item {
            padding: 24px 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition);
        }
        .scenario-item:last-child {
            border-bottom: none;
        }
        .scenario-item:hover {
            padding-left: 8px;
        }
        .scenario-num {
            font-family: var(--font-num);
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(0, 166, 166, 0.08);
            padding: 4px 10px;
            border-radius: 6px;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .scenario-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .scenario-body p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 0;
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg-page);
            padding: 88px 0;
        }
        .news-head {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .news-head h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 0;
        }
        .news-head .btn-view-all {
            font-size: 14px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
        }
        .news-head .btn-view-all:hover {
            color: var(--primary);
            gap: 10px;
        }
        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .info-card a {
            display: block;
            text-decoration: none;
            color: inherit;
            height: 100%;
        }
        .info-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-soft);
        }
        .info-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .info-card:hover .info-thumb img {
            transform: scale(1.03);
        }
        .info-thumb::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }
        .info-card:hover .info-thumb::after {
            opacity: 1;
        }
        .info-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(27, 30, 36, 0.85);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 4px;
            backdrop-filter: blur(4px);
        }
        .info-body {
            padding: 20px;
        }
        .info-body h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }
        .info-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .info-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        .info-meta .read-link {
            color: var(--primary);
            font-weight: 500;
            font-size: 13px;
        }
        .empty-state {
            background: var(--bg-soft);
            border-radius: 12px;
            padding: 48px 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            width: 100%;
        }
        .empty-state .empty-icon {
            font-size: 36px;
            color: var(--text-muted);
            opacity: 0.5;
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 成功案例 ===== */
        .cases-section {
            background: #fff;
            padding: 88px 0;
        }
        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .case-card .case-img {
            overflow: hidden;
            position: relative;
        }
        .case-card .case-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .case-card:hover .case-img img {
            transform: scale(1.03);
        }
        .case-card .case-body {
            padding: 28px;
            flex: 1;
        }
        .case-card .case-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 166, 166, 0.08);
            padding: 3px 12px;
            border-radius: 6px;
            margin-bottom: 14px;
        }
        .case-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .case-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .case-quote {
            border-left: 3px solid var(--primary);
            background: var(--bg-page);
            padding: 14px 18px;
            border-radius: 0 8px 8px 0;
            font-size: 14px;
            color: var(--text-muted);
            font-style: italic;
            line-height: 1.7;
        }
        .case-quote cite {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            font-style: normal;
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== 价格版本 ===== */
        .pricing-section {
            background: var(--bg-page);
            padding: 88px 0;
        }
        .pricing-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            padding: 36px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .pricing-card.pricing-featured {
            background: var(--bg-dark);
            color: #fff;
            border: 2px solid var(--primary);
            position: relative;
        }
        .pricing-card.pricing-featured .pricing-name,
        .pricing-card.pricing-featured h3,
        .pricing-card.pricing-featured .pricing-desc {
            color: #fff;
        }
        .pricing-card.pricing-featured .pricing-price {
            color: #4DD6D6;
        }
        .pricing-card.pricing-featured .pricing-currency {
            color: rgba(255, 255, 255, 0.6);
        }
        .pricing-card.pricing-featured .pricing-feature-list li {
            color: rgba(255, 255, 255, 0.85);
        }
        .pricing-card.pricing-featured .pricing-feature-list li i {
            color: var(--primary);
        }
        .pricing-badge {
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            box-shadow: var(--shadow-accent);
        }
        .pricing-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }
        .pricing-price {
            font-family: var(--font-num);
            font-size: 44px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .pricing-currency {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
            margin-right: 2px;
        }
        .pricing-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .pricing-feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
            flex: 1;
        }
        .pricing-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            line-height: 1.7;
            padding: 6px 0;
            color: var(--text-main);
        }
        .pricing-feature-list li i {
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .btn-pricing {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-pricing:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-pricing.pricing-featured-btn {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-pricing.pricing-featured-btn:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }
        .pricing-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 24px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
            padding: 88px 0;
        }
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color) !important;
            border-radius: 12px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .faq-accordion .accordion-item:focus-within {
            border-color: var(--primary) !important;
            box-shadow: 0 0 0 3px rgba(0, 166, 166, 0.1);
        }
        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--primary) !important;
        }
        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            padding: 22px 24px;
            box-shadow: none;
            gap: 14px;
        }
        .faq-accordion .accordion-button::after {
            background-image: none;
            content: "+";
            font-family: sans-serif;
            font-size: 22px;
            font-weight: 400;
            color: var(--primary);
            width: auto;
            height: auto;
            transition: transform 0.3s;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #fff;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--primary);
            border-radius: 16px;
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-hover);
        }
        .cta-card h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-card p {
            color: var(--text-muted);
            margin-bottom: 0;
            font-size: 16px;
        }
        .cta-card .btn-hero-accent {
            flex-shrink: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            border-top: 4px solid var(--primary);
        }
        .site-footer .footer-top {
            padding-bottom: 48px;
        }
        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.6;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .site-footer .footer-contact {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
        }
        .site-footer .footer-contact i {
            color: var(--primary);
            margin-right: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                padding: 16px;
                border-radius: 12px;
                margin-top: 8px;
                box-shadow: var(--shadow-hover);
                border: 1px solid var(--border-color);
            }
            .navbar-search {
                width: 100%;
                margin: 12px 0;
            }
            .navbar-nav .nav-link {
                padding: 10px 12px;
            }
            .btn-login-header {
                width: 100%;
                justify-content: center;
            }
            .hero {
                padding: 72px 0 56px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero-cover-wrap {
                margin-top: 40px;
            }
            .hero-stats .col-lg-3 .stat-item {
                padding-left: 0;
                margin-bottom: 24px;
            }
            .hero-stats .col-lg-3:not(:first-child) .stat-item::before {
                display: none;
            }
            .scenarios-sticky {
                position: static;
                margin-bottom: 32px;
            }
            .feature-card-large .feature-img {
                height: 200px;
            }
            .pricing-card {
                margin-bottom: 24px;
            }
            .cta-card {
                padding: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-btns {
                flex-direction: column;
            }
            .hero-btns .btn-main,
            .hero-btns .btn-hero-accent,
            .hero-btns .btn-outline-main {
                width: 100%;
            }
            .hero-stats .stat-value {
                font-size: 26px;
            }
            .feature-card-large .feature-body {
                padding: 24px;
            }
            .feature-card-large .feature-img {
                min-height: 180px;
            }
            .news-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .case-card .case-img img {
                height: 160px;
            }
            .cta-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }
            .cta-card .btn-hero-accent {
                width: 100%;
            }
            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .brand-logo {
                font-size: 15px;
            }
            .hero {
                padding: 56px 0 48px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-stats {
                margin-top: 40px;
            }
            .feature-card {
                padding: 20px;
            }
            .pricing-card {
                padding: 24px;
            }
            .pricing-price {
                font-size: 36px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
:root{
    --primary:#00A6A6;
    --primary-dark:#008B8B;
    --accent:#FF6B4A;
    --accent-dark:#E85A3D;
    --dark:#1B1E24;
    --bg:#F7F5F0;
    --card-bg:#FFFFFF;
    --text-main:#1C1D21;
    --text-muted:#6B6F76;
    --border:#E5E1D8;
    --radius-sm:8px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-sm:0 2px 8px rgba(28,29,33,.04);
    --shadow-md:0 8px 24px rgba(28,29,33,.08);
    --transition:all .25s cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter","Roboto",sans-serif;
    background:var(--bg);
    color:var(--text-main);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto}
ul,ol{list-style:none}
.container{max-width:1200px;--bs-gutter-x:24px}
.btn{border-radius:var(--radius-sm);font-weight:600;padding:0 24px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;transition:var(--transition);line-height:1;font-size:15px}
.btn:focus-visible,.form-control:focus-visible,a:focus-visible{outline:3px solid rgba(0,166,166,.35);outline-offset:2px}
.btn-cta{background:var(--accent);color:#fff;border-color:var(--accent);height:48px;padding:0 32px;border-radius:var(--radius-sm);box-shadow:0 4px 14px rgba(255,107,74,.25)}
.btn-cta:hover{background:var(--accent-dark);color:#fff;box-shadow:0 8px 20px rgba(255,107,74,.32);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.65);height:48px;padding:0 28px;border-radius:var(--radius-sm)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-outline-main{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline-main:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== Header ===== */
.site-header{
    background:#FFFFFF;
    border-bottom:1px solid var(--border);
    box-shadow:0 1px 4px rgba(28,29,33,.04);
    position:sticky;
    top:0;
    z-index:1030;
    backdrop-filter:saturate(1.2);
}
.site-header .navbar{
    min-height:68px;
    padding:8px 0;
    --bs-navbar-padding-y:0;
}
.brand-logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:18px;
    font-weight:700;
    color:var(--text-main);
    letter-spacing:-.01em;
    line-height:1.2;
}
.brand-logo:hover{color:var(--primary)}
.logo-icon{
    width:32px;
    height:32px;
    background:var(--primary);
    border-radius:8px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    flex-shrink:0;
    position:relative;
}
.logo-icon::after{
    content:"";
    width:14px;
    height:14px;
    border:2px solid #fff;
    border-radius:4px;
    transform:rotate(45deg);
    display:block;
}
.navbar-nav{gap:8px}
.nav-link{
    font-size:15px;
    font-weight:500;
    color:var(--text-main);
    padding:8px 16px !important;
    border-radius:var(--radius-sm);
    position:relative;
    transition:var(--transition);
}
.nav-link:hover{color:var(--primary)}
.nav-link.active{
    color:var(--primary);
    font-weight:600;
}
.nav-link.active::after{
    content:"";
    position:absolute;
    bottom:2px;
    left:16px;
    right:16px;
    height:2px;
    background:var(--primary);
    border-radius:2px;
}
.navbar-search{
    position:relative;
    width:200px;
}
.navbar-search .search-icon{
    position:absolute;
    left:12px;
    top:50%;
    transform:translateY(-50%);
    color:var(--text-muted);
    font-size:14px;
    z-index:2;
}
.navbar-search .form-control{
    height:40px;
    border-radius:var(--radius-sm);
    border:1px solid var(--border);
    background:#fff;
    padding-left:36px;
    font-size:14px;
    color:var(--text-main);
    box-shadow:none;
    transition:var(--transition);
}
.navbar-search .form-control::placeholder{color:#A0A4AB}
.navbar-search .form-control:focus{
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(0,166,166,.15);
}
.btn-login-header{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:40px;
    padding:0 20px;
    background:var(--primary);
    color:#fff;
    border-radius:var(--radius-sm);
    font-size:14px;
    font-weight:600;
    border:none;
    transition:var(--transition);
    white-space:nowrap;
}
.btn-login-header:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.navbar-toggler{
    border:none;
    font-size:24px;
    color:var(--text-main);
    padding:4px 8px;
    box-shadow:none!important;
}
.navbar-toggler i{font-size:24px;line-height:1}

/* ===== Hero ===== */
.hero-section{
    position:relative;
    background:
        linear-gradient(100deg,rgba(27,30,36,.92) 0%,rgba(27,30,36,.72) 45%,rgba(27,30,36,.45) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding:100px 0 110px;
    color:#fff;
    overflow:hidden;
}
.hero-badge{
    display:inline-block;
    background:rgba(0,166,166,.2);
    border:1px solid rgba(0,166,166,.5);
    color:#7EDEDE;
    font-size:13px;
    font-weight:500;
    padding:4px 14px;
    border-radius:999px;
    margin-bottom:18px;
    letter-spacing:.02em;
}
.hero-section h1{
    font-size:48px;
    font-weight:700;
    line-height:1.2;
    letter-spacing:-.01em;
    color:#fff;
    margin-bottom:16px;
}
.hero-subtitle{
    font-size:18px;
    line-height:1.7;
    color:rgba(255,255,255,.85);
    max-width:520px;
    margin-bottom:32px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{
    position:relative;
    border-radius:var(--radius-lg);
    overflow:visible;
    max-width:520px;
    margin-left:auto;
}
.hero-img{
    width:100%;
    border-radius:var(--radius-lg);
    box-shadow:0 20px 50px rgba(0,0,0,.35);
    border:1px solid rgba(255,255,255,.15);
}
.live-badge{
    position:absolute;
    bottom:20px;
    left:-16px;
    background:#fff;
    color:var(--text-main);
    font-size:14px;
    font-weight:600;
    padding:8px 18px;
    border-radius:999px;
    display:inline-flex;
    align-items:center;
    gap:8px;
    box-shadow:0 8px 24px rgba(0,0,0,.15);
}
.live-dot{
    width:10px;
    height:10px;
    background:var(--primary);
    border-radius:50%;
    display:inline-block;
    animation:pulse 1.5s infinite;
}
@keyframes pulse{
    0%,100%{box-shadow:0 0 0 0 rgba(0,166,166,.5)}
    50%{box-shadow:0 0 0 6px rgba(0,166,166,0)}
}
@keyframes fadeInUp{
    from{opacity:0;transform:translateY(24px)}
    to{opacity:1;transform:translateY(0)}
}
.hero-badge{animation:fadeInUp .5s ease .1s both}
.hero-section h1{animation:fadeInUp .5s ease .2s both}
.hero-subtitle{animation:fadeInUp .5s ease .3s both}
.hero-actions{animation:fadeInUp .5s ease .4s both}
.hero-visual{animation:fadeInUp .6s ease .5s both}
@media(prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
}

/* ===== 通用区块标题 ===== */
.section-title{
    font-size:32px;
    font-weight:700;
    color:var(--text-main);
    line-height:1.3;
    margin-bottom:12px;
    letter-spacing:-.01em;
}
.section-subtitle{
    color:var(--text-muted);
    font-size:16px;
    max-width:640px;
    line-height:1.8;
}
.section-head{padding-bottom:40px}

/* ===== 优势区 ===== */
.advantages-section{padding:80px 0}
.adv-card{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:var(--radius-md);
    padding:28px 26px;
    box-shadow:var(--shadow-sm);
    transition:var(--transition);
    height:100%;
}
.adv-card:hover{
    border-color:var(--primary);
    box-shadow:var(--shadow-md);
    transform:translateY(-2px);
}
.adv-icon{
    width:52px;
    height:52px;
    border-radius:12px;
    background:rgba(0,166,166,.1);
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:24px;
    margin-bottom:18px;
}
.adv-card h3{font-size:20px;font-weight:600;margin-bottom:10px;color:var(--text-main)}
.adv-card p{color:var(--text-muted);font-size:15px;line-height:1.8;margin-bottom:0}

/* ===== 场景区 ===== */
.scenario-section{padding:80px 0;background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.scenario-heading{position:sticky;top:120px;padding-right:30px}
.scenario-heading p{color:var(--text-muted);font-size:16px;line-height:1.8;margin-top:14px}
.scenario-list{display:flex;flex-direction:column;gap:0}
.scenario-item{
    display:flex;
    gap:24px;
    padding:26px 0;
    border-bottom:1px solid var(--border);
    transition:var(--transition);
    align-items:flex-start;
}
.scenario-item:last-child{border-bottom:none}
.scenario-item:hover{padding-left:12px}
.scenario-num{
    font-family:"Inter","DIN Alternate",sans-serif;
    font-size:15px;
    font-weight:700;
    color:var(--primary);
    background:rgba(0,166,166,.08);
    border-radius:8px;
    width:44px;
    height:44px;
    display:flex;
    align-items:center;
    justify-content:center;
    flex-shrink:0;
    letter-spacing:.02em;
}
.scenario-content h3{font-size:19px;font-weight:600;color:var(--text-main);margin-bottom:6px}
.scenario-content p{color:var(--text-muted);font-size:15px;line-height:1.7;margin-bottom:0}

/* ===== 流程区 ===== */
.process-section{padding:80px 0;background:var(--bg)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-item{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:var(--radius-md);
    padding:28px 24px;
    position:relative;
    box-shadow:var(--shadow-sm);
    transition:var(--transition);
}
.process-item:hover{
    border-color:var(--primary);
    box-shadow:var(--shadow-md);
    transform:translateY(-3px);
}
.process-num{
    font-family:"Inter","DIN Alternate",sans-serif;
    font-size:36px;
    font-weight:800;
    color:rgba(0,166,166,.18);
    line-height:1;
    display:block;
    margin-bottom:14px;
    letter-spacing:-.02em;
}
.process-item h3{font-size:17px;font-weight:600;color:var(--text-main);margin-bottom:8px}
.process-item p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:0}
.process-step-arrow{
    position:absolute;
    right:-16px;
    top:50%;
    transform:translateY(-50%);
    color:var(--primary);
    font-size:20px;
    z-index:2;
    background:var(--bg);
    border-radius:50%;
    width:30px;
    height:30px;
    display:flex;
    align-items:center;
    justify-content:center;
}
@media(max-width:991px){
    .process-steps{grid-template-columns:repeat(2,1fr)}
    .process-step-arrow{display:none}
}

/* ===== 功能模块区 ===== */
.modules-section{padding:80px 0;background:#fff}
.module-card{
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    overflow:hidden;
    background:var(--card-bg);
    box-shadow:var(--shadow-sm);
    height:100%;
    display:flex;
    flex-direction:column;
    transition:var(--transition);
}
.module-card:hover{
    box-shadow:var(--shadow-md);
    border-color:var(--primary);
    transform:translateY(-4px);
}
.module-card .card-img-wrap{
    position:relative;
    overflow:hidden;
    height:220px;
    background:var(--dark);
}
.module-card .card-img-wrap img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.module-card:hover .card-img-wrap img{transform:scale(1.04)}
.card-img-wrap::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(to top,rgba(27,30,36,.35),transparent 60%);
}
.module-card .card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.module-card .card-tag{
    display:inline-block;
    background:rgba(0,166,166,.08);
    color:var(--primary-dark);
    font-size:12px;
    font-weight:600;
    padding:3px 12px;
    border-radius:999px;
    margin-bottom:14px;
    align-self:flex-start;
}
.module-card h3{font-size:19px;font-weight:600;color:var(--text-main);margin-bottom:10px}
.module-card p{color:var(--text-muted);font-size:15px;line-height:1.75;flex:1}
.module-link{
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:14px;
}
.module-link:hover{color:var(--accent);gap:10px}
.module-link i{transition:transform .2s ease}

/* ===== FAQ ===== */
.faq-section{padding:80px 0;background:var(--bg)}
.accordion{display:flex;flex-direction:column;gap:12px}
.accordion-item{
    border:1px solid var(--border)!important;
    border-radius:var(--radius-md)!important;
    background:var(--card-bg);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    transition:var(--transition);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
    border-color:var(--primary)!important;
    box-shadow:var(--shadow-md);
}
.accordion-button{
    font-size:16px;
    font-weight:600;
    color:var(--text-main);
    background:var(--card-bg);
    padding:20px 24px;
    box-shadow:none!important;
    border-radius:var(--radius-md)!important;
    transition:var(--transition);
}
.accordion-button::after{
    font-family:"bootstrap-icons";
    content:"\F64D";
    background:none;
    width:auto;
    height:auto;
    font-size:18px;
    color:var(--primary);
    transition:transform .3s ease;
}
.accordion-button:not(.collapsed)::after{
    transform:rotate(45deg);
    color:var(--accent);
}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(0,166,166,.03)}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(0,166,166,.15)!important}
.accordion-body{padding:16px 24px 24px;color:var(--text-muted);font-size:15px;line-height:1.85;border-top:1px solid rgba(0,166,166,.08)}

/* ===== CTA ===== */
.cta-section{padding:60px 0 80px;background:var(--bg)}
.cta-card{
    background:var(--card-bg);
    border:2px solid var(--primary);
    border-radius:var(--radius-lg);
    padding:48px 40px;
    text-align:center;
    box-shadow:0 8px 30px rgba(0,166,166,.08);
    position:relative;
    overflow:hidden;
}
.cta-card::before{
    content:"";
    position:absolute;
    top:0;
    left:0;
    right:0;
    height:5px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
}
.cta-card h2{font-size:28px;font-weight:700;color:var(--text-main);margin-bottom:12px}
.cta-card p{color:var(--text-muted);font-size:16px;max-width:560px;margin:0 auto 28px;line-height:1.8}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{
    background:var(--dark);
    color:rgba(255,255,255,.75);
    border-top:4px solid var(--primary);
    padding:56px 0 0;
    font-size:14px;
}
.footer-top{padding-bottom:32px}
.footer-brand{
    font-size:21px;
    font-weight:700;
    color:#fff;
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:14px;
    letter-spacing:-.01em;
}
.footer-brand .logo-icon{
    width:32px;
    height:32px;
    background:var(--primary);
    border-radius:7px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    position:relative;
    flex-shrink:0;
}
.footer-brand .logo-icon::after{
    content:"";
    width:14px;
    height:14px;
    border:2px solid #fff;
    border-radius:4px;
    transform:rotate(45deg);
    display:block;
}
.footer-desc{
    color:rgba(255,255,255,.55);
    line-height:1.8;
    font-size:14px;
    max-width:340px;
    margin-bottom:0;
}
.footer-title{
    color:#fff;
    font-size:16px;
    font-weight:600;
    margin-bottom:16px;
}
.footer-links{
    display:flex;
    flex-direction:column;
    gap:10px;
}
.footer-links a{
    color:rgba(255,255,255,.6);
    font-size:14px;
    transition:var(--transition);
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.footer-links a::before{
    content:"";
    width:4px;
    height:4px;
    background:var(--primary);
    border-radius:50%;
    opacity:.6;
}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-contact{
    display:flex;
    flex-direction:column;
    gap:12px;
    color:rgba(255,255,255,.6);
}
.footer-contact i{color:var(--primary);margin-right:8px;font-size:14px}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    padding:20px 0;
    font-size:13px;
    color:rgba(255,255,255,.4);
    text-align:center;
}
.footer-bottom .container{
    display:flex;
    justify-content:center;
    gap:24px;
    flex-wrap:wrap;
    align-items:center;
}
.footer-bottom span{display:inline-flex;align-items:center;gap:6px}

/* ===== 响应式 ===== */
@media(max-width:991px){
    .hero-section{padding:60px 0 80px}
    .hero-section h1{font-size:34px}
    .hero-subtitle{font-size:16px}
    .hero-visual{margin:40px auto 0;max-width:480px}
    .section-title{font-size:28px}
    .scenario-heading{position:static;margin-bottom:30px}
    .navbar-collapse{
        padding:16px 0;
        border-top:1px solid var(--border);
        margin-top:8px;
        background:#fff;
        border-radius:0 0 var(--radius-md) var(--radius-md);
        box-shadow:var(--shadow-sm);
    }
    .navbar-search{width:100%;margin-bottom:12px}
    .btn-login-header{width:100%;justify-content:center}
    .nav-link.active::after{display:none}
    .nav-link.active{background:rgba(0,166,166,.08);border-radius:var(--radius-sm)}
    .process-steps{grid-template-columns:repeat(2,1fr);gap:16px}
}
@media(max-width:767px){
    .hero-section{padding:48px 0 64px}
    .hero-section h1{font-size:30px}
    .hero-subtitle{font-size:15px}
    .hero-actions .btn{width:100%}
    .advantages-section,.scenario-section,.process-section,.modules-section,.faq-section{padding:48px 0}
    .section-title{font-size:26px}
    .process-steps{grid-template-columns:1fr;gap:14px}
    .scenario-item{padding:20px 0}
    .cta-card{padding:36px 20px}
    .cta-card h2{font-size:22px}
    .cta-actions .btn{width:100%;margin:0 auto}
    .footer-bottom .container{flex-direction:column;gap:6px}
}
@media(max-width:575px){
    .hero-section h1{font-size:28px}
    .hero-badge{font-size:12px}
    .live-badge{left:10px;padding:6px 14px;font-size:13px}
    .adv-card{padding:22px 18px}
    .module-card .card-img-wrap{height:180px}
    .scenario-item{gap:16px}
    .scenario-num{width:38px;height:38px;font-size:13px}
    .accordion-button{font-size:15px;padding:16px 18px}
    .accordion-body{padding:12px 18px 18px}
}

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --primary: #00A6A6;
            --primary-dark: #008B8B;
            --accent: #FF6B4A;
            --accent-dark: #E85A3D;
            --dark: #1B1E24;
            --bg: #F7F5F0;
            --card-bg: #FFFFFF;
            --text: #1C1D21;
            --text-muted: #6B6F76;
            --border: #E5E1D8;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(28, 29, 33, .04);
            --shadow-hover: 0 8px 24px rgba(28, 29, 33, .08);
            --transition: all .25s cubic-bezier(.22, .61, .36, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "DIN Alternate", "Roboto", sans-serif;
        }

        /* ========== 基础 reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            -webkit-font-smoothing: antialiased;
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }
        :focus-visible {
            outline: 3px solid rgba(0, 166, 166, .35);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== 布局容器 ========== */
        .container {
            max-width: 1200px;
            --bs-gutter-x: 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: saturate(1.2);
            -webkit-backdrop-filter: saturate(1.2);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .site-header .navbar {
            min-height: 72px;
            padding: 8px 0;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: var(--transition);
        }
        .brand-logo:hover {
            color: var(--text);
        }
        .brand-logo .logo-icon {
            display: inline-block;
            width: 18px;
            height: 18px;
            background: var(--primary);
            border-radius: 5px;
            position: relative;
            flex-shrink: 0;
            box-shadow: 0 2px 6px rgba(0, 166, 166, .25);
        }
        .brand-logo .logo-icon::after {
            content: '';
            position: absolute;
            top: 4px;
            left: 4px;
            width: 10px;
            height: 6px;
            border: 2px solid #fff;
            border-top: none;
            border-radius: 0 0 6px 6px;
        }
        .navbar-nav {
            gap: 32px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 0 !important;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .navbar-search {
            position: relative;
            width: 200px;
        }
        .navbar-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            z-index: 2;
            pointer-events: none;
        }
        .navbar-search .form-control {
            height: 40px;
            padding-left: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--bg);
            font-size: 14px;
            transition: var(--transition);
        }
        .navbar-search .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 166, 166, .15);
            background: #fff;
        }
        .btn-login-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-login-header:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 16px rgba(255, 107, 74, .28);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text);
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 166, 166, .15);
        }
        .navbar-toggler .bi {
            font-size: 22px;
            line-height: 1;
        }

        /* ========== 文章横幅 ========== */
        .article-banner {
            background: linear-gradient(90deg, rgba(27, 30, 36, .88), rgba(27, 30, 36, .55)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            padding: 52px 0 44px;
            border-bottom: 1px solid var(--border);
        }
        .article-banner-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .banner-label {
            color: #fff;
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.01em;
            display: inline-flex;
            align-items: center;
        }
        .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            margin-right: 4px;
            box-shadow: 0 0 0 0 rgba(0, 166, 166, .5);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0% {
                box-shadow: 0 0 0 0 rgba(0, 166, 166, .5);
            }
            70% {
                box-shadow: 0 0 0 8px rgba(0, 166, 166, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(0, 166, 166, 0);
            }
        }
        .banner-crumbs {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
            flex-wrap: wrap;
        }
        .banner-crumbs a {
            color: rgba(255, 255, 255, .7);
        }
        .banner-crumbs a:hover {
            color: var(--primary);
        }
        .crumb-sep {
            color: rgba(255, 255, 255, .35);
        }

        /* ========== 文章主区 ========== */
        .article-main {
            padding: 44px 0 64px;
        }
        .article-container {
            max-width: 760px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .article-crumbs {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 22px;
        }
        .article-crumbs a {
            color: var(--text-muted);
        }
        .article-crumbs a:hover {
            color: var(--primary);
        }
        .article-crumbs .sep {
            color: #B8B4AC;
        }
        .article-crumbs .current {
            color: var(--primary);
            font-weight: 500;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 36px 40px 40px;
        }
        .article-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin: 0 0 16px;
            color: var(--text);
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 13px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border);
            padding-bottom: 20px;
            margin-bottom: 28px;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-num);
        }
        .meta-item i {
            color: var(--primary);
            font-size: 14px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .article-content p {
            margin-bottom: 22px;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            font-weight: 700;
            color: var(--text);
            margin: 32px 0 16px;
            line-height: 1.35;
        }
        .article-content h2 {
            font-size: 24px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }
        .article-content h3 {
            font-size: 20px;
        }
        .article-content h4 {
            font-size: 17px;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 22px;
            padding-left: 22px;
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content ul li::marker {
            color: var(--primary);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg);
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-muted);
        }
        .article-content blockquote p {
            margin-bottom: 0;
        }
        .article-content img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 28px auto;
            width: 100%;
            height: auto;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content strong {
            color: var(--text);
            font-weight: 600;
        }
        .article-content code {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 2px 8px;
            font-size: 14px;
            color: var(--primary-dark);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 166, 166, .06);
        }

        /* ========== 内容未找到 ========== */
        .not-found-box {
            text-align: center;
            padding: 64px 24px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .not-found-box i {
            font-size: 48px;
            color: #C9C5BC;
            display: block;
            margin-bottom: 16px;
        }
        .not-found-box h1 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ========== 按钮 ========== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .btn-main:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 16px rgba(255, 107, 74, .28);
            transform: translateY(-1px);
        }
        .btn-outline-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 22px;
            border: 1px solid var(--text-muted);
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline-main:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        /* ========== 相关阅读 ========== */
        .related-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 56px 0;
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 16px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            margin: 0;
            letter-spacing: -0.01em;
        }
        .section-more {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .section-more:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .related-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px;
            height: 100%;
            transition: var(--transition);
        }
        .related-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .related-card img {
            width: 92px;
            height: 68px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .related-info h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.6;
            margin: 0 0 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover .related-info h3 {
            color: var(--primary);
        }
        .related-time {
            font-size: 13px;
            color: var(--text-muted);
            font-family: var(--font-num);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .back-bar {
            display: flex;
            justify-content: center;
            margin-top: 32px;
        }
        .back-bar .btn-outline-main {
            height: 44px;
            padding: 0 28px;
        }

        /* ========== CTA 区块 ========== */
        .cta-band {
            background: var(--bg);
            padding: 48px 0;
        }
        .cta-box {
            background: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }
        .cta-text p {
            color: var(--text-muted);
            margin: 0;
            font-size: 15px;
        }
        .btn-cta-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-cta-main:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(255, 107, 74, .3);
            transform: translateY(-1px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .72);
            border-top: 4px solid var(--primary);
            padding: 48px 0 0;
        }
        .footer-top {
            padding-bottom: 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-desc {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            line-height: 1.8;
            margin: 12px 0 0;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact div {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            word-break: break-all;
        }
        .footer-contact i {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 16px 0;
            display: flex;
            justify-content: space-between;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .45);
        }

        /* ========== 动效 ========== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                padding: 12px 0 6px;
                border-top: 1px solid var(--border);
                margin-top: 8px;
            }
            .navbar-nav {
                gap: 4px;
                margin-bottom: 12px !important;
            }
            .nav-link {
                padding: 10px 0 !important;
            }
            .navbar-search {
                width: 100%;
                margin-bottom: 10px;
            }
            .btn-login-header {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }
        @media (max-width: 767.98px) {
            .article-banner {
                padding: 36px 0 28px;
            }
            .banner-label {
                font-size: 22px;
            }
            .article-main {
                padding: 24px 0 48px;
            }
            .article-box {
                padding: 24px 20px 28px;
            }
            .article-title {
                font-size: 28px;
            }
            .article-meta {
                gap: 12px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .related-card {
                padding: 12px;
            }
            .related-card img {
                width: 80px;
                height: 60px;
            }
            .cta-box {
                padding: 24px 20px;
            }
            .btn-cta-main {
                width: 100%;
                justify-content: center;
            }
            .cta-text h2 {
                font-size: 20px;
            }
            .footer-top {
                padding-bottom: 24px;
            }
        }
        @media (max-width: 575.98px) {
            .article-container {
                padding: 0 16px;
            }
            .article-crumbs .current {
                max-width: 130px;
            }
            .article-content {
                font-size: 15px;
            }
            .related-card {
                flex-direction: row;
            }
            .related-card img {
                width: 88px;
                height: 66px;
            }
            .back-bar {
                margin-top: 24px;
            }
            .section-more {
                font-size: 13px;
            }
        }