/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0F766E;
            --primary-hover: #115E59;
            --primary-light: #E6F2F0;
            --accent: #D97706;
            --accent-hover: #B45309;
            --dark: #0B1F1A;
            --dark-soft: #14332C;
            --body: #1F2937;
            --body-secondary: #4B5563;
            --muted: #9CA3AF;
            --bg: #F8FAF7;
            --card: #FFFFFF;
            --border: #E5E7EB;
            --success: #16A34A;
            --danger: #DC2626;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 1px 3px rgba(11, 31, 26, 0.06), 0 4px 12px rgba(11, 31, 26, 0.04);
            --shadow-lg: 0 8px 30px rgba(11, 31, 26, 0.12);
            --shadow-accent: 0 4px 16px rgba(217, 119, 6, 0.30);
            --shadow-accent-hover: 0 6px 20px rgba(217, 119, 6, 0.45);
            --transition: 0.25s ease;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== Reset与基础 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--body);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.75em;
            color: var(--body);
        }
        p {
            margin-bottom: 1rem;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-md);
            font-weight: 600;
            padding: 10px 24px;
            height: 44px;
            border: 2px solid transparent;
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }
        .btn-lg {
            padding: 14px 32px;
            height: 52px;
            font-size: 16px;
        }
        .btn-primary-custom {
            background-color: var(--primary);
            color: #fff;
        }
        .btn-primary-custom:hover {
            background-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.20);
            text-decoration: none;
        }
        .btn-outline-primary-custom {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-primary-custom:hover {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-color: var(--primary-hover);
            text-decoration: none;
        }
        .btn-accent {
            background-color: var(--accent);
            color: #1F2937;
            box-shadow: var(--shadow-accent);
        }
        .btn-accent:hover {
            background-color: var(--accent-hover);
            color: #fff;
            box-shadow: var(--shadow-accent-hover);
            transform: scale(1.02) translateY(-1px);
            text-decoration: none;
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.35);
            backdrop-filter: blur(8px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .btn-outline-light-custom {
            background: transparent;
            color: #E6F2F0;
            border: 1px solid rgba(255, 255, 255, 0.45);
        }
        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
            text-decoration: none;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: all 0.35s ease;
            padding: 16px 0;
            background: rgba(248, 250, 247, 0.72);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.35);
            box-shadow: 0 2px 12px rgba(11, 31, 26, 0.06);
        }
        .site-header.scrolled {
            background: #FFFFFF;
            padding: 10px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            border-bottom-color: transparent;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 18px;
            color: var(--body);
        }
        .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            flex-shrink: 0;
            box-shadow: 0 4px 10px rgba(15, 118, 110, 0.25);
        }
        .navbar-brand:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .site-nav .nav-link-custom {
            display: inline-block;
            padding: 8px 16px;
            font-weight: 500;
            color: var(--body-secondary);
            border-radius: 8px;
            transition: all 0.2s ease;
            font-size: 15px;
        }
        .site-nav .nav-link-custom:hover {
            color: var(--primary);
            background: var(--primary-light);
            text-decoration: none;
        }
        .site-nav .nav-link-custom.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-download-btn {
            background-color: var(--accent);
            color: #1F2937;
            border-radius: var(--radius-md);
            padding: 8px 20px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: var(--shadow-accent);
            transition: all var(--transition);
            border: none;
        }
        .nav-download-btn:hover {
            background-color: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-accent-hover);
            text-decoration: none;
        }
        .navbar-toggler-custom {
            border: none;
            background: var(--primary-light);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
        }
        .navbar-toggler-custom:hover {
            background: #D5E9E6;
        }
        .offcanvas-nav {
            background: rgba(11, 31, 26, 0.95);
            color: #E6F2F0;
            backdrop-filter: blur(12px);
            width: 300px;
        }
        .offcanvas-nav .offcanvas-title {
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .offcanvas-nav .btn-close {
            filter: invert(1);
        }
        .offcanvas-nav .mobile-nav-link {
            display: block;
            padding: 14px 16px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 17px;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            transition: all 0.2s ease;
        }
        .offcanvas-nav .mobile-nav-link:hover,
        .offcanvas-nav .mobile-nav-link.active {
            color: #fff;
            background: rgba(15, 118, 110, 0.6);
            text-decoration: none;
            padding-left: 22px;
        }
        .offcanvas-nav .mobile-cta {
            margin: 20px 16px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            overflow: hidden;
            background-color: var(--dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.4;
            z-index: 1;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 31, 26, 0.92) 0%, rgba(11, 31, 26, 0.72) 50%, rgba(15, 118, 110, 0.55) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 118, 110, 0.35);
            border: 1px solid rgba(15, 118, 110, 0.6);
            color: #D1FAE5;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            color: #6EE7B7;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 900;
            color: #F9FAFB;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
            max-width: 640px;
        }
        .hero-subtitle {
            font-size: 18px;
            line-height: 1.75;
            color: rgba(230, 242, 240, 0.85);
            max-width: 520px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 40px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            color: rgba(230, 242, 240, 0.7);
            font-size: 14px;
        }
        .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta i {
            color: #6EE7B7;
        }
        .scroll-down {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            transition: all 0.3s ease;
            backdrop-filter: blur(8px);
        }
        .scroll-down:hover {
            background: rgba(15, 118, 110, 0.6);
            border-color: var(--primary);
            color: #fff;
            transform: translateX(-50%) translateY(3px);
            text-decoration: none;
        }

        /* ===== 徽章条 ===== */
        .trust-badges {
            padding: 56px 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .badges-row {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .badge-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .badge-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .badge-item i {
            font-size: 26px;
            color: var(--primary);
            background: var(--primary-light);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .badge-item span {
            font-size: 14px;
            font-weight: 600;
            color: var(--body);
        }

        /* ===== 通用区块 ===== */
        .section-padding {
            padding: 96px 0;
        }
        @media (max-width: 991px) {
            .section-padding {
                padding: 72px 0;
            }
        }
        @media (max-width: 575px) {
            .section-padding {
                padding: 56px 0;
            }
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-head .section-kicker {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: none;
            margin-bottom: 8px;
            display: block;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .section-head p {
            font-size: 17px;
            color: var(--body-secondary);
            line-height: 1.7;
        }

        /* ===== 解决方案区 ===== */
        .solution {
            background: var(--bg);
            padding: 96px 0;
        }
        @media (max-width: 575px) {
            .solution {
                padding: 56px 0;
            }
        }
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: relative;
        }
        .steps-list::before {
            content: '';
            position: absolute;
            left: 36px;
            top: 60px;
            bottom: 60px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary-light), var(--border));
        }
        .step-card {
            display: flex;
            gap: 24px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            z-index: 1;
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(15, 118, 110, 0.4);
        }
        .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            box-shadow: 0 4px 10px rgba(15, 118, 110, 0.3);
        }
        .step-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 15px;
            color: var(--body-secondary);
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .step-card a {
            font-size: 14px;
            font-weight: 600;
        }
        .solution-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .solution-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
            display: block;
        }

        /* ===== 数据区 ===== */
        .stats {
            background: var(--dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .stats::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 20% 30%, rgba(15, 118, 110, 0.25) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(217, 119, 6, 0.18) 0%, transparent 45%);
            pointer-events: none;
        }
        .stats-inner {
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 20px 10px;
        }
        .stat-num {
            display: block;
            font-size: 42px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.15;
            font-variant-numeric: tabular-nums;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(230, 242, 240, 0.7);
            font-weight: 500;
        }
        .stats-line {
            width: 80%;
            max-width: 800px;
            height: 2px;
            margin: 40px auto 0;
            background: linear-gradient(90deg, transparent, rgba(217, 119, 6, 0.6) 30%, rgba(15, 118, 110, 0.6) 70%, transparent);
            border-radius: 2px;
        }

        /* ===== 证言区 ===== */
        .testimonials {
            padding: 96px 0;
            background: var(--bg);
        }
        @media (max-width: 575px) {
            .testimonials {
                padding: 56px 0;
            }
        }
        .testimonial-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-left: 4px solid var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }
        .testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: 14px;
            right: 22px;
            font-size: 80px;
            line-height: 1;
            color: var(--primary-light);
            font-family: Georgia, serif;
            pointer-events: none;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .testimonial-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .testimonial-card p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--body);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .testimonial-footer {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .testimonial-footer span {
            font-weight: 600;
            color: var(--body-secondary);
        }
        .testimonial-footer time {
            margin-left: auto;
            font-variant-numeric: tabular-nums;
        }

        /* ===== 资讯列表 ===== */
        .news {
            padding: 96px 0;
            background: #fff;
        }
        @media (max-width: 575px) {
            .news {
                padding: 56px 0;
            }
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .news-card {
            display: flex;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(15, 118, 110, 0.3);
        }
        .news-cover {
            flex-shrink: 0;
            width: 280px;
            min-height: 150px;
            overflow: hidden;
            position: relative;
        }
        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-cover img {
            transform: scale(1.04);
        }
        .news-body {
            padding: 24px;
            flex: 1;
        }
        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-body h3 a {
            color: var(--body);
        }
        .news-body h3 a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .news-body p {
            font-size: 14px;
            color: var(--body-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
            font-variant-numeric: tabular-nums;
        }
        .news-cat {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 12px;
        }
        .empty-state {
            background: var(--bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
            padding: 60px 20px;
            text-align: center;
            color: var(--muted);
        }
        .empty-state i {
            font-size: 42px;
            display: block;
            margin-bottom: 12px;
            color: var(--border);
        }
        .empty-state p {
            margin-bottom: 0;
            font-size: 15px;
        }
        .view-all-wrap {
            text-align: center;
            margin-top: 40px;
        }

        /* ===== FAQ ===== */
        .faq {
            padding: 96px 0;
            background: var(--bg);
        }
        @media (max-width: 575px) {
            .faq {
                padding: 56px 0;
            }
        }
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--body);
            background: var(--card);
            padding: 16px 20px;
            box-shadow: none;
            border-radius: var(--radius-lg);
            transition: all 0.2s ease;
        }
        .accordion-button:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230F766E'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform 0.25s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-body {
            padding: 20px;
            background: var(--bg);
            border-left: 3px solid var(--primary);
            font-size: 15px;
            line-height: 1.8;
            color: var(--body-secondary);
        }
        .faq-more {
            text-align: center;
            margin-top: 30px;
            font-size: 15px;
            color: var(--body-secondary);
        }
        .faq-more a {
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-final {
            background: var(--dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-final::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 100%, rgba(15, 118, 110, 0.35) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-final::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-final h2 {
            font-size: 30px;
            font-weight: 800;
            color: #F9FAFB;
            margin-bottom: 16px;
        }
        .cta-final p {
            font-size: 17px;
            color: rgba(230, 242, 240, 0.75);
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            padding: 64px 0 0;
            color: rgba(230, 242, 240, 0.65);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #F9FAFB;
            margin-bottom: 14px;
        }
        .footer-logo i {
            color: #6EE7B7;
            font-size: 24px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .footer-icp {
            font-size: 12px;
            color: rgba(230, 242, 240, 0.4);
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: #F9FAFB;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(230, 242, 240, 0.65);
            font-size: 14px;
            transition: all 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
        }
        .footer-contact i {
            color: var(--accent);
            font-size: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(230, 242, 240, 0.4);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(230, 242, 240, 0.6);
            font-size: 14px;
            transition: all 0.25s ease;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--dark);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .badges-row {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-cover {
                width: 220px;
            }
            .hero h1 {
                font-size: 36px;
            }
        }
        @media (max-width: 767.98px) {
            .hero {
                min-height: auto;
                padding: 120px 0 60px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .badges-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .badge-item {
                padding: 14px 10px;
            }
            .solution-visual img {
                min-height: 0;
            }
            .news-card {
                flex-direction: column;
            }
            .news-cover {
                width: 100%;
                height: 180px;
                position: relative;
            }
            .news-cover img {
                position: absolute;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .stats-inner .row {
                row-gap: 20px;
            }
            .stat-num {
                font-size: 32px;
            }
            .stat-item {
                padding: 12px 8px;
            }
            .testimonial-card {
                margin-bottom: 16px;
            }
            .step-card {
                flex-direction: column;
                padding: 22px;
            }
            .step-num {
                width: 40px;
                height: 40px;
                font-size: 14px;
            }
            .steps-list::before {
                left: 30px;
                top: 50px;
                bottom: 50px;
            }
            .cta-final h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .badges-row {
                gap: 12px;
            }
            .badge-item {
                padding: 10px 6px;
            }
            .badge-item i {
                font-size: 20px;
                width: 40px;
                height: 40px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-meta {
                gap: 14px;
                font-size: 13px;
            }
            .news-body {
                padding: 18px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .fade-up {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-hover: #115E59;
            --primary-light: #E6F2F0;
            --primary-light-deep: #D5E9E6;
            --accent: #D97706;
            --accent-hover: #B45309;
            --dark: #0B1F1A;
            --text: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --bg: #F8FAF7;
            --card: #FFFFFF;
            --border: #E5E7EB;
            --border-soft: #EDF2F0;
            --success: #16A34A;
            --warning: #DC2626;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 12px;
            --shadow: 0 1px 3px rgba(11,31,26,0.06), 0 4px 12px rgba(11,31,26,0.04);
            --shadow-hover: 0 8px 30px rgba(11,31,26,0.12);
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
        }
        .section {
            padding: 96px 0;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .section-head-center {
            text-align: center;
        }
        .section-head-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            border: 0;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn:focus-visible,
        .nav-link-custom:focus-visible,
        .site-logo:focus-visible,
        .footer-links a:focus-visible,
        .footer-social a:focus-visible,
        .mobile-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(15,118,110,0.25);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.7);
            color: #fff;
        }
        .btn-outline-custom:hover {
            background: rgba(255,255,255,0.12);
            color: #fff;
            border-color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: #1F2937;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(217,119,6,0.30);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(217,119,6,0.45);
            transform: scale(1.02);
        }
        .btn-lg {
            height: 52px;
            padding: 0 32px;
            font-size: 17px;
        }
        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        .btn-light-custom {
            background: var(--primary-light);
            color: var(--primary);
        }
        .btn-light-custom:hover {
            background: var(--primary-light-deep);
            color: var(--primary-hover);
        }

        /* 顶部导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.55);
            -webkit-backdrop-filter: blur(12px) saturate(180%);
            backdrop-filter: blur(12px) saturate(180%);
            border-bottom: 1px solid rgba(255,255,255,0.35);
            box-shadow: 0 2px 10px rgba(0,0,0,0.03);
            transition: all 0.3s ease;
        }
        .site-header.is-scrolled {
            background: #FFFFFF;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border-bottom-color: rgba(0,0,0,0.06);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            text-decoration: none;
            line-height: 1.25;
            letter-spacing: 0.01em;
        }
        .site-logo i {
            font-size: 28px;
            color: var(--primary);
        }
        .site-logo:hover {
            color: var(--primary-hover);
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            height: 40px;
            padding: 0 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .nav-link-custom:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link-custom.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-toggle {
            width: 42px;
            height: 42px;
            border: 0;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }
        .nav-toggle:hover {
            background: var(--primary-light-deep);
        }

        /* 移动端抽屉 */
        .mobile-menu {
            background: rgba(11,31,26,0.92);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            color: #fff;
        }
        .mobile-menu .offcanvas-header {
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }
        .mobile-menu .offcanvas-title {
            color: #fff;
            font-weight: 600;
            font-size: 18px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-menu .offcanvas-title i {
            color: #5EEAD4;
        }
        .mobile-menu .btn-close {
            filter: invert(1);
        }
        .mobile-link {
            display: block;
            font-size: 18px;
            line-height: 48px;
            color: rgba(255,255,255,0.85);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .mobile-link:hover {
            color: #fff;
            padding-left: 4px;
        }
        .mobile-link.active {
            color: #5EEAD4;
            font-weight: 600;
        }

        /* 页面 Hero */
        .page-hero {
            position: relative;
            padding: 178px 0 88px;
            background: var(--dark);
            overflow: hidden;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.5;
        }
        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(11,31,26,0.95) 0%, rgba(11,31,26,0.78) 45%, rgba(15,118,110,0.45) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-wrap {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 24px;
        }
        .breadcrumb-wrap a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            color: #5EEAD4;
        }
        .breadcrumb-wrap .sep {
            opacity: 0.5;
        }
        .breadcrumb-wrap .current {
            color: #5EEAD4;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 900;
            color: #fff;
            line-height: 1.25;
            max-width: 680px;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .page-hero .hero-lead {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-scroll-hint {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 36px;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            animation: floatY 2s ease-in-out infinite;
        }
        @keyframes floatY {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(6px);
            }
        }

        /* 产品总览 */
        .overview-section {
            background: var(--bg);
        }
        .overview-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--card);
            border: 1px solid var(--border-soft);
        }
        .overview-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            border-radius: var(--radius);
            display: block;
        }
        .overview-badge-row {
            position: absolute;
            left: 16px;
            bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .official-badge,
        .safe-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.92);
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 999px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }
        .official-badge i {
            color: var(--primary);
            font-size: 16px;
        }
        .safe-badge i {
            color: var(--accent);
            font-size: 16px;
        }
        .overview-content h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--text);
        }
        .overview-content>p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .feature-points {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
        }
        .feature-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: #fff;
            border: 1px solid var(--border-soft);
            margin-bottom: 10px;
            transition: all 0.2s ease;
        }
        .feature-points li:hover {
            background: var(--primary-light);
            border-color: rgba(15,118,110,0.2);
            transform: translateX(4px);
        }
        .feature-points i {
            color: var(--primary);
            font-size: 20px;
            line-height: 1.4;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .feature-points strong {
            display: block;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }
        .feature-points span {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* 能力卡片 */
        .capability-section {
            background: #fff;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .capability-card {
            background: var(--bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius);
            padding: 28px 24px;
            height: 100%;
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
        }
        .capability-card::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .capability-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            background: #fff;
        }
        .capability-card:hover::after {
            opacity: 1;
        }
        .capability-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            font-size: 26px;
            margin-bottom: 18px;
        }
        .capability-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .capability-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* 版本选择 */
        .version-section {
            background: var(--bg);
        }
        .version-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .version-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius);
            padding: 22px 26px;
            transition: all 0.25s ease;
        }
        .version-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(15,118,110,0.3);
        }
        .version-num {
            font-size: 28px;
            font-weight: 900;
            color: var(--primary-light-deep);
            line-height: 1;
            min-width: 46px;
            text-align: center;
        }
        .version-info h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .version-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }
        .version-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            font-size: 24px;
            flex-shrink: 0;
        }
        .version-tag {
            margin-left: auto;
            flex-shrink: 0;
            font-size: 13px;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            font-weight: 500;
        }

        /* 保障区域 */
        .guarantee-section {
            background: var(--dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .guarantee-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: rgba(15,118,110,0.2);
            border-radius: 50%;
            filter: blur(60px);
        }
        .guarantee-section .section-title {
            color: #fff;
        }
        .guarantee-section .section-subtitle {
            color: rgba(255,255,255,0.7);
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .guarantee-item {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius);
            padding: 26px 22px;
            transition: all 0.25s ease;
        }
        .guarantee-item:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-3px);
        }
        .guarantee-item i {
            font-size: 28px;
            color: #FBBF24;
            margin-bottom: 14px;
            display: block;
        }
        .guarantee-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #fff;
        }
        .guarantee-item p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.7);
            margin: 0;
        }

        /* CTA */
        .cta-section {
            background: var(--bg);
            padding: 72px 0;
            position: relative;
        }
        .cta-box {
            background: var(--dark);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            background-image: radial-gradient(circle at 80% 20%, rgba(15,118,110,0.5) 0%, transparent 50%);
            position: relative;
            overflow: hidden;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: rgba(255,255,255,0.75);
            font-size: 17px;
            margin-bottom: 30px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* 返回首页 */
        .back-home-wrap {
            background: #fff;
            border-top: 1px solid var(--border-soft);
            padding: 18px 0;
            text-align: center;
        }
        .back-home-wrap .container {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 15px;
            color: var(--text-muted);
        }
        .back-home-wrap a {
            color: var(--primary);
            font-weight: 500;
            text-decoration: none;
        }
        .back-home-wrap a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

        /* 页脚 */
        .site-footer {
            background: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 64px 0 0;
        }
        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo i {
            color: #5EEAD4;
            font-size: 26px;
        }
        .footer-brand p {
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 320px;
            color: rgba(255,255,255,0.6);
        }
        .footer-icp {
            font-size: 13px;
            color: rgba(255,255,255,0.35);
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li,
        .footer-contact li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: rgba(255,255,255,0.6);
            font-size: 15px;
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact li {
            color: rgba(255,255,255,0.6);
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: #5EEAD4;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 40px;
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: rgba(255,255,255,0.4);
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            border-radius: 50%;
            font-size: 16px;
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .page-hero {
                padding: 150px 0 64px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .page-hero {
                padding: 130px 0 56px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .overview-image img {
                height: 260px;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .version-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .version-tag {
                margin-left: 0;
            }
            .cta-box {
                padding: 40px 24px;
            }
        }
        @media (max-width: 575.98px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-lead {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .breadcrumb-wrap {
                font-size: 13px;
            }
            .overview-content h2 {
                font-size: 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0F766E;
            --primary-hover: #115E59;
            --primary-light: #E6F2F0;
            --primary-light-2: #D5E9E6;
            --accent: #D97706;
            --accent-hover: #B45309;
            --dark: #0B1F1A;
            --text: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --bg: #F8FAF7;
            --card-bg: #FFFFFF;
            --border: #E5E7EB;
            --border-light: #EDF2F0;
            --success: #16A34A;
            --danger: #DC2626;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 1px 3px rgba(11,31,26,0.06), 0 4px 12px rgba(11,31,26,0.04);
            --shadow-hover: 0 8px 30px rgba(11,31,26,0.12);
            --shadow-accent: 0 4px 16px rgba(217,119,6,0.30);
            --shadow-accent-hover: 0 6px 20px rgba(217,119,6,0.45);
            --transition: 0.25s ease;
            --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-top: 72px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button, input, select, textarea {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Container 定制 ===== */
        .container {
            max-width: 1280px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255,255,255,0.55);
            backdrop-filter: blur(12px) saturate(180%);
            -webkit-backdrop-filter: blur(12px) saturate(180%);
            border-bottom: 1px solid rgba(255,255,255,0.35);
            box-shadow: 0 1px 8px rgba(11,31,26,0.05);
            transition: background 0.3s ease, box-shadow 0.3s ease;
            padding: 12px 0;
        }
        .site-header.scrolled {
            background: #FFFFFF;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .logo i {
            font-size: 28px;
            color: var(--primary);
        }
        .logo:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-link-custom:hover {
            color: var(--primary);
            background: rgba(15,118,110,0.08);
            text-decoration: none;
        }
        .nav-link-custom.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            position: relative;
            width: 220px;
        }
        .search-box input {
            width: 100%;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 36px 8px 14px;
            font-size: 14px;
            background: rgba(255,255,255,0.8);
            transition: all var(--transition);
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15,118,110,0.15);
        }
        .search-box i {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            pointer-events: none;
        }
        .btn-nav-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 40px;
            padding: 0 18px;
            background: var(--accent);
            color: #1F2937;
            font-size: 14px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-accent);
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-nav-download:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: var(--shadow-accent-hover);
            text-decoration: none;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 22px;
            cursor: pointer;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: rgba(11,31,26,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 1040;
            padding: 32px 24px;
            display: flex;
            flex-direction: column;
            gap: 0;
            transition: right 0.3s ease;
            overflow-y: auto;
        }
        .mobile-nav.open {
            right: 0;
        }
        .mobile-nav a {
            color: #fff;
            font-size: 18px;
            line-height: 48px;
            text-decoration: none;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a:hover {
            color: var(--accent);
        }
        .mobile-nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(11,31,26,0.5);
            z-index: 1035;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .mobile-nav-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            padding: 32px 0 8px;
            background: var(--bg);
        }
        .breadcrumb-wrap {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb-wrap a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: #d1d5db;
            font-size: 12px;
            display: inline-flex;
        }
        .breadcrumb-current {
            color: var(--text-muted);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== 文章标题区 ===== */
        .article-header {
            padding: 20px 0 32px;
            background: var(--bg);
        }
        .article-title-wrap {
            max-width: 760px;
            margin: 0 auto;
            padding: 0 16px;
        }
        .article-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-item i {
            color: var(--primary);
            font-size: 15px;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }
        .article-share-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 正文阅读区 ===== */
        .article-content {
            padding: 16px 0 64px;
            background: var(--bg);
        }
        .article-body {
            max-width: 760px;
            margin: 0 auto;
            padding: 32px 16px;
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 36px 0 16px;
            padding-left: 16px;
            position: relative;
            line-height: 1.4;
        }
        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 6px;
            height: 24px;
            background: var(--primary);
            border-radius: 3px;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 12px;
            line-height: 1.4;
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 24px auto;
            display: block;
            height: auto;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #F1F7F5;
            padding: 18px 22px;
            margin: 28px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-style: normal;
            position: relative;
        }
        .article-body blockquote::before {
            content: '\201C';
            font-size: 40px;
            color: var(--primary);
            line-height: 1;
            display: block;
            margin-bottom: 4px;
            opacity: 0.4;
        }
        .article-body blockquote p {
            margin-bottom: 0;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.5em;
            padding-left: 1.5em;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body figure {
            margin: 28px auto;
            text-align: center;
        }
        .article-body figcaption {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--primary-light);
            color: var(--text);
            font-weight: 600;
        }
        .article-body table tr:nth-child(even) td {
            background: #F9FBF9;
        }
        .article-body code {
            background: #F1F5F4;
            border-radius: 4px;
            padding: 2px 6px;
            font-size: 14px;
            color: var(--primary-hover);
        }
        .article-body pre {
            background: var(--dark);
            color: #e2e8f0;
            border-radius: var(--radius-md);
            padding: 20px;
            overflow-x: auto;
            margin-bottom: 1.5em;
            font-size: 14px;
            line-height: 1.7;
        }
        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 40px 0;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 56px 0 40px;
            background: var(--bg);
            border-top: 1px solid var(--border);
        }
        .related-section .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }
        .related-section .section-head h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            position: relative;
            padding-left: 14px;
        }
        .related-section .section-head h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 2px;
        }
        .related-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .related-more:hover {
            color: var(--primary-hover);
            text-decoration: none;
        }
        .related-more i {
            transition: transform var(--transition);
        }
        .related-more:hover i {
            transform: translateX(4px);
        }
        .related-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-decoration: none;
            color: inherit;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            text-decoration: none;
            color: inherit;
        }
        .related-cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.03);
        }
        .related-info {
            padding: 18px 20px 20px;
        }
        .related-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color var(--transition);
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .related-card:hover .related-info h4 {
            color: var(--primary);
        }
        .related-date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .related-date i {
            font-size: 14px;
        }

        /* ===== 返回入口 ===== */
        .back-bar {
            padding: 24px 0 64px;
            background: var(--bg);
            text-align: center;
        }
        .btn-back-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 15px;
            font-weight: 500;
            border: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-back-custom:hover {
            background: var(--primary-light-2);
            color: var(--primary-hover);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .btn-back-custom i {
            font-size: 18px;
        }

        /* ===== 内容未找到 ===== */
        .article-not-found {
            max-width: 640px;
            margin: 48px auto 80px;
            padding: 56px 32px;
            text-align: center;
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .article-not-found i {
            font-size: 56px;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 24px;
            color: var(--text);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            text-decoration: none;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 64px 0 0;
        }
        .footer-brand {
            margin-bottom: 16px;
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            white-space: nowrap;
        }
        .footer-logo i {
            font-size: 26px;
            color: var(--primary-light);
        }
        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.6);
            max-width: 340px;
            margin-bottom: 16px;
        }
        .footer-icp {
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255,255,255,0.6);
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
            text-decoration: none;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-contact i {
            color: var(--accent);
            font-size: 16px;
            width: 20px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0;
            margin-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 14px;
            color: rgba(255,255,255,0.4);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--dark);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .site-nav {
                display: none !important;
            }
            .navbar-toggler-custom {
                display: inline-flex;
            }
            .search-box {
                display: none;
            }
            .related-list {
                grid-template-columns: 1fr;
                max-width: 520px;
                margin: 0 auto;
            }
        }
        @media (max-width: 767.98px) {
            body {
                padding-top: 64px;
            }
            .site-header {
                padding: 8px 0;
            }
            .logo {
                font-size: 17px;
            }
            .logo i {
                font-size: 22px;
            }
            .breadcrumb-bar {
                padding: 20px 0 0;
            }
            .article-header {
                padding: 16px 0 20px;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 10px;
                font-size: 13px;
            }
            .article-share {
                display: none;
            }
            .article-body {
                font-size: 16px;
                line-height: 1.85;
                padding: 24px 16px;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .related-section .section-head h3 {
                font-size: 22px;
            }
            .related-list {
                max-width: 100%;
            }
            .site-footer {
                padding-top: 48px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .btn-nav-download {
                padding: 0 14px;
                font-size: 13px;
            }
            .article-header h1 {
                font-size: 22px;
            }
            .breadcrumb-current {
                max-width: 180px;
            }
            .related-info h4 {
                font-size: 15px;
            }
            .article-body blockquote {
                padding: 14px 16px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-light: #E6F2F0;
            --primary-light-2: #D5E9E6;
            --accent: #D97706;
            --accent-dark: #B45309;
            --dark-bg: #0B1F1A;
            --body-text: #1F2937;
            --body-text-2: #4B5563;
            --muted-text: #9CA3AF;
            --page-bg: #F8FAF7;
            --card-bg: #FFFFFF;
            --border-color: #E5E7EB;
            --success: #16A34A;
            --warning: #DC2626;
            --font-heading: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 6px;
            --shadow-card: 0 1px 3px rgba(11, 31, 26, 0.06), 0 4px 12px rgba(11, 31, 26, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(11, 31, 26, 0.12);
            --shadow-cta: 0 4px 16px rgba(217, 119, 6, 0.30);
            --transition-base: 0.25s ease;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--body-text);
            background-color: var(--page-bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1280px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.25;
            color: var(--body-text);
            margin: 0 0 0.75em;
        }
        p {
            margin: 0 0 1em;
        }
        .text-secondary-custom {
            color: var(--body-text-2);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1080;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(12px) saturate(180%);
            -webkit-backdrop-filter: blur(12px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.35);
            box-shadow: 0 1px 6px rgba(11, 31, 26, 0.04);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: #FFFFFF;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            min-height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 8px;
            padding-bottom: 8px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 900;
            color: var(--body-text);
            white-space: nowrap;
            text-decoration: none;
        }
        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .brand-logo i {
            font-size: 28px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 42px;
        }
        .brand-logo span {
            font-size: 17px;
            letter-spacing: 0.02em;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link-custom {
            position: relative;
            padding: 9px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--body-text-2);
            border-radius: 10px;
            transition: background var(--transition-base), color var(--transition-base);
            text-decoration: none;
        }
        .nav-link-custom:hover {
            color: var(--primary);
            background: var(--primary-light);
            text-decoration: none;
        }
        .nav-link-custom.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }
        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-download-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1F2937;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-cta);
            border: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-download-header:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(217, 119, 6, 0.45);
            text-decoration: none;
        }
        .menu-toggle {
            width: 44px;
            height: 44px;
            border: none;
            background: var(--primary-light);
            border-radius: var(--radius-btn);
            color: var(--primary);
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .menu-toggle:hover {
            background: var(--primary-light-2);
        }

        /* 移动端抽屉 */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: rgba(11, 31, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 1090;
            padding: 24px;
            display: flex;
            flex-direction: column;
            transition: right 0.3s ease;
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.2);
        }
        .mobile-menu.open {
            right: 0;
        }
        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
        }
        .mobile-menu-close {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.1);
            border: none;
            border-radius: 8px;
            color: #FFFFFF;
            font-size: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu nav a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 18px;
            line-height: 48px;
            padding: 0 12px;
            border-radius: 10px;
            text-decoration: none;
            transition: background var(--transition-base), color var(--transition-base);
        }
        .mobile-menu nav a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
        }
        .mobile-menu nav a.active {
            color: #FFFFFF;
            background: rgba(15, 118, 110, 0.5);
            font-weight: 700;
        }
        .mobile-menu .btn-mobile-download {
            margin-top: 20px;
            background: var(--accent);
            color: #1F2937;
            border-radius: var(--radius-btn);
            font-weight: 700;
            text-align: center;
            line-height: 48px;
        }
        .mobile-menu .btn-mobile-download:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
        }

        /* ===== 页面顶部引导区 ===== */
        .page-banner {
            position: relative;
            padding: 160px 0 80px;
            background: linear-gradient(135deg, rgba(11, 31, 26, 0.88), rgba(15, 118, 110, 0.72)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            color: #FFFFFF;
        }
        .page-banner .banner-content {
            max-width: 760px;
        }
        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.95);
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }
        .page-banner h1 {
            color: #FFFFFF;
            font-size: 42px;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 18px;
        }
        .page-banner .banner-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
        }
        .page-banner .banner-breadcrumb {
            margin-top: 28px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .page-banner .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
        }
        .page-banner .banner-breadcrumb a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }
        .page-banner .banner-breadcrumb i {
            font-size: 12px;
        }

        /* ===== 全局板块 ===== */
        .section-block {
            padding: 96px 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-head .section-tagline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 900;
            margin-bottom: 14px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--body-text-2);
            margin: 0;
        }

        /* ===== 下载流程 ===== */
        .steps-section {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-color);
        }
        .steps-layout {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 56px;
            align-items: center;
        }
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }
        .step-card {
            display: flex;
            gap: 18px;
            background: var(--page-bg);
            border: 1px solid #EDF2F0;
            border-radius: var(--radius-card);
            padding: 22px 24px;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .step-num {
            flex: 0 0 52px;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary);
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 900;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-variant-numeric: tabular-nums;
        }
        .step-card:nth-child(2n) .step-num {
            background: var(--accent);
        }
        .step-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-body p {
            font-size: 14px;
            color: var(--body-text-2);
            margin: 0;
            line-height: 1.7;
        }
        .steps-visual {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }
        .steps-visual img {
            width: 100%;
            height: 100%;
            min-height: 380px;
            object-fit: cover;
        }
        .steps-visual .steps-visual-tag {
            position: absolute;
            left: 20px;
            bottom: 20px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            padding: 12px 18px;
            border-radius: 12px;
            font-size: 13px;
            color: var(--body-text);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .steps-visual .steps-visual-tag i {
            color: var(--primary);
            font-size: 18px;
        }

        /* ===== 版本对比表格 ===== */
        .version-table-section {
            background: var(--page-bg);
        }
        .custom-table-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid #EDF2F0;
        }
        .custom-table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
        }
        .custom-table th,
        .custom-table td {
            padding: 18px 22px;
            text-align: left;
            border-bottom: 1px solid #EDF2F0;
            font-size: 15px;
        }
        .custom-table th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 0.03em;
            border-bottom: 2px solid var(--primary);
        }
        .custom-table td {
            color: var(--body-text-2);
        }
        .custom-table tr:last-child td {
            border-bottom: none;
        }
        .custom-table tbody tr {
            transition: background var(--transition-base);
        }
        .custom-table tbody tr:hover {
            background: #F3F8F6;
        }
        .table-platform {
            font-weight: 700;
            color: var(--body-text);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .table-platform i {
            font-size: 20px;
            color: var(--primary);
        }
        .table-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .table-badge-accent {
            display: inline-block;
            background: #FEF3E2;
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            white-space: nowrap;
        }

        /* ===== 安装注意事项 ===== */
        .notes-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .notes-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .note-card {
            background: var(--page-bg);
            border: 1px solid #EDF2F0;
            border-radius: var(--radius-card);
            padding: 28px;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .note-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .note-card .note-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .note-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .note-card p {
            font-size: 14px;
            color: var(--body-text-2);
            margin: 0;
            line-height: 1.75;
        }

        /* ===== 更新日志时间线 ===== */
        .timeline-section {
            background: var(--page-bg);
        }
        .timeline {
            position: relative;
            max-width: 760px;
            margin: 0 auto;
            padding-left: 32px;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 10px;
            top: 4px;
            width: 2px;
            height: calc(100% - 8px);
            background: var(--primary-light-2);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 32px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -28px;
            top: 8px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .timeline-item .timeline-date {
            font-size: 13px;
            color: var(--muted-text);
            font-variant-numeric: tabular-nums;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .timeline-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .timeline-item p {
            font-size: 14px;
            color: var(--body-text-2);
            margin: 0;
        }

        /* ===== FAQ手风琴 ===== */
        .faq-section {
            background: var(--page-bg);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-custom .accordion-item {
            border: 1px solid #EDF2F0;
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--card-bg);
        }
        .accordion-custom .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--primary);
        }
        .accordion-custom .accordion-button {
            height: 60px;
            padding: 0 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--body-text);
            background: var(--card-bg);
            border: none;
            box-shadow: none;
            gap: 12px;
            transition: background var(--transition-base), color var(--transition-base);
        }
        .accordion-custom .accordion-button::after {
            display: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
        }
        .accordion-custom .accordion-button .faq-icon {
            width: 28px;
            height: 28px;
            flex: 0 0 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
        }
        .accordion-custom .accordion-button:not(.collapsed) .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #FFFFFF;
        }
        .accordion-custom .accordion-body {
            padding: 18px 24px 22px;
            border-left: 4px solid var(--primary);
            background: var(--page-bg);
            font-size: 15px;
            line-height: 1.8;
            color: var(--body-text-2);
        }

        /* ===== CTA区 ===== */
        .cta-section {
            background: var(--dark-bg);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(15, 118, 110, 0.25), transparent 60%);
            pointer-events: none;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(217, 119, 6, 0.12), transparent 60%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #FFFFFF;
            font-size: 32px;
            font-weight: 900;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #1F2937;
            font-weight: 700;
            font-size: 16px;
            padding: 14px 34px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-cta);
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            text-decoration: none;
            border: none;
        }
        .btn-cta-primary:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(217, 119, 6, 0.45);
            text-decoration: none;
        }
        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.06);
            color: #FFFFFF;
            font-weight: 500;
            font-size: 16px;
            padding: 14px 30px;
            border-radius: var(--radius-btn);
            transition: background var(--transition-base), border-color var(--transition-base);
            text-decoration: none;
        }
        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.4);
            color: #FFFFFF;
            text-decoration: none;
        }
        .cta-note {
            margin-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 0;
        }
        .site-footer .footer-brand {
            margin-bottom: 16px;
        }
        .site-footer .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 900;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .site-footer .footer-logo i {
            font-size: 26px;
            color: var(--accent);
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 340px;
        }
        .site-footer .footer-icp {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            display: block;
        }
        .site-footer h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition-base), padding-left var(--transition-base);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .site-footer .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-contact i {
            color: var(--accent);
            font-size: 16px;
        }
        .site-footer .footer-bottom {
            margin-top: 56px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 10px;
        }
        .site-footer .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 16px;
            transition: background var(--transition-base), color var(--transition-base);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #FFFFFF;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .steps-layout {
                gap: 40px;
            }
        }
        @media (max-width: 991.98px) {
            .section-block {
                padding: 72px 0;
            }
            .page-banner {
                padding: 130px 0 64px;
            }
            .page-banner h1 {
                font-size: 34px;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .steps-layout {
                grid-template-columns: 1fr;
            }
            .steps-visual img {
                min-height: 260px;
            }
            .notes-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 767.98px) {
            .section-block {
                padding: 56px 0;
            }
            .page-banner {
                padding: 110px 0 48px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner .banner-sub {
                font-size: 15px;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .step-card {
                flex-direction: column;
                gap: 12px;
            }
            .step-num {
                width: 44px;
                height: 44px;
                font-size: 17px;
                border-radius: 10px;
            }
            .steps-visual img {
                min-height: 200px;
            }
            .custom-table-wrap {
                overflow-x: auto;
            }
            .custom-table {
                min-width: 720px;
            }
            .note-card {
                padding: 22px;
            }
            .cta-section {
                padding: 64px 0;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-cta-primary,
            .btn-cta-secondary {
                width: 100%;
                justify-content: center;
            }
            .timeline {
                padding-left: 26px;
            }
            .timeline-item::before {
                left: -24px;
                width: 12px;
                height: 12px;
            }
            .accordion-custom .accordion-button {
                font-size: 15px;
                padding: 0 18px;
            }
            .accordion-custom .accordion-body {
                padding: 14px 18px 18px;
            }
        }
        @media (max-width: 575.98px) {
            .header-inner {
                min-height: 64px;
            }
            .brand-logo span {
                font-size: 14px;
            }
            .brand-logo i {
                width: 36px;
                height: 36px;
                font-size: 20px;
                flex-basis: 36px;
            }
            .btn-download-header {
                padding: 8px 14px;
                font-size: 13px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner .banner-tag {
                font-size: 12px;
            }
            .section-head h2 {
                font-size: 21px;
            }
            .step-body h3 {
                font-size: 16px;
            }
            .note-card h3 {
                font-size: 16px;
            }
            .site-footer {
                padding-top: 56px;
            }
            .site-footer .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0F766E;
            --primary-hover: #115E59;
            --primary-light: #E6F2F0;
            --primary-light-deep: #D5E9E6;
            --accent: #D97706;
            --accent-hover: #B45309;
            --dark: #0B1F1A;
            --dark-light: #132B24;
            --text-main: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --bg-page: #F8FAF7;
            --bg-card: #FFFFFF;
            --border: #E5E7EB;
            --border-card: #EDF2F0;
            --success: #16A34A;
            --danger: #DC2626;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 6px;
            --shadow-card: 0 1px 3px rgba(11,31,26,0.06), 0 4px 12px rgba(11,31,26,0.04);
            --shadow-hover: 0 8px 30px rgba(11,31,26,0.12);
            --shadow-cta: 0 4px 16px rgba(217,119,6,0.30);
            --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --bs-body-font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --bs-body-bg: #F8FAF7;
            --bs-body-color: #1F2937;
            --bs-primary: #0F766E;
            --bs-primary-rgb: 15, 118, 110;
            --bs-link-color: #0F766E;
            --bs-link-hover-color: #115E59;
            --bs-link-decoration: none;
            --bs-border-color: #E5E7EB;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            background: var(--bg-page);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 0.75em;
            letter-spacing: -0.01em;
        }

        p {
            margin: 0 0 1em;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

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

        ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(12px) saturate(180%);
            -webkit-backdrop-filter: blur(12px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.35);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.scrolled {
            background: #FFFFFF;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            border-bottom-color: transparent;
        }

        .site-header .navbar {
            padding: 14px 0;
            min-height: 72px;
            gap: 24px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
            white-space: nowrap;
        }

        .navbar-brand i {
            font-size: 26px;
            color: var(--primary);
            transition: transform .3s ease;
        }

        .navbar-brand:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .navbar-brand:hover i {
            transform: scale(1.06);
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link-custom {
            display: block;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 18px;
            border-radius: 8px;
            transition: color .2s ease, background .2s ease;
            line-height: 1.5;
        }

        .nav-link-custom:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.07);
            text-decoration: none;
        }

        .nav-link-custom.active {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.12);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-accent-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1F2937;
            font-size: 14px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            box-shadow: var(--shadow-cta);
            transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
            white-space: nowrap;
        }

        .btn-accent-nav:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(217, 119, 6, 0.45);
            text-decoration: none;
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            border-radius: 8px;
            background: var(--primary-light);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%230F766E' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .mobile-nav-canvas {
            background: rgba(11, 31, 26, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: #fff;
            width: 300px;
        }

        .mobile-nav-canvas .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 24px;
        }

        .mobile-nav-canvas .offcanvas-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-nav-canvas .btn-close {
            filter: invert(1);
            opacity: 0.7;
        }

        .mobile-nav-canvas .offcanvas-body {
            padding: 16px 24px 32px;
        }

        .mobile-nav-link {
            display: block;
            font-size: 18px;
            line-height: 48px;
            color: rgba(255, 255, 255, 0.82);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color .2s ease, padding-left .2s ease;
        }

        .mobile-nav-link:hover {
            color: #fff;
            padding-left: 6px;
            text-decoration: none;
        }

        .mobile-nav-link.active {
            color: #F0B429;
            font-weight: 600;
        }

        .mobile-nav-canvas .btn-accent-nav {
            margin-top: 24px;
            width: 100%;
            justify-content: center;
        }

        /* 页面横幅 */
        .page-banner {
            position: relative;
            padding: 136px 0 72px;
            background: var(--dark);
            color: #fff;
            overflow: hidden;
        }

        .page-banner .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.45;
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 31, 26, 0.94) 0%, rgba(11, 31, 26, 0.72) 55%, rgba(11, 31, 26, 0.38) 100%);
            z-index: 2;
        }

        .page-banner .container {
            position: relative;
            z-index: 3;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
            transition: color .2s ease;
        }

        .breadcrumb-custom a:hover {
            color: #F0B429;
            text-decoration: none;
        }

        .breadcrumb-custom .divider {
            color: rgba(255, 255, 255, 0.35);
        }

        .breadcrumb-custom .current {
            color: #F0B429;
            font-weight: 500;
        }

        .page-banner h1 {
            font-size: 42px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
            max-width: 720px;
        }

        .page-banner .banner-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin-bottom: 28px;
        }

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

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 28px;
            transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
            box-shadow: 0 4px 16px rgba(15, 118, 110, 0.25);
        }

        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            text-decoration: none;
            box-shadow: 0 6px 22px rgba(15, 118, 110, 0.35);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.45);
            border-radius: var(--radius-btn);
            padding: 14px 28px;
            transition: background .25s ease, border-color .25s ease, color .25s ease;
        }

        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #F0B429;
            color: #F0B429;
            text-decoration: none;
        }

        /* 区块通用 */
        .section {
            padding: 96px 0;
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-soft {
            background: #F0F7F5;
        }

        .section-head {
            margin-bottom: 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-tag);
            padding: 5px 14px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }

        .section-head.text-center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* FAQ 手风琴 */
        .faq-section {
            padding: 96px 0;
            background: #FFFFFF;
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto 36px;
        }

        .faq-accordion {
            --bs-accordion-border-color: var(--border);
            --bs-accordion-border-radius: var(--radius-card);
            --bs-accordion-inner-border-radius: calc(var(--radius-card) - 1px);
            --bs-accordion-bg: #FFFFFF;
            --bs-accordion-btn-bg: #FFFFFF;
            --bs-accordion-active-bg: var(--primary-light);
            --bs-accordion-active-color: var(--primary);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
            --bs-accordion-btn-padding-x: 22px;
            --bs-accordion-btn-padding-y: 18px;
            overflow: hidden;
        }

        .faq-accordion .accordion-item {
            margin-bottom: 12px;
            border: 1px solid var(--border);
            border-radius: var(--radius-card) !important;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease;
        }

        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: #FFFFFF;
            padding: 18px 22px;
            line-height: 1.5;
            transition: color .2s ease, background .2s ease;
        }

        .faq-accordion .accordion-button::after {
            content: "+";
            background: none;
            font-size: 26px;
            font-weight: 400;
            color: var(--primary);
            width: auto;
            height: auto;
            transform: none;
            transition: transform .25s ease, color .25s ease;
            text-align: center;
            line-height: 1;
            font-family: var(--font);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            border-bottom: 1px solid rgba(15, 118, 110, 0.12);
        }

        .faq-accordion .accordion-body {
            padding: 20px 22px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            background: #F8FAF7;
            border-left: 3px solid var(--primary);
        }

        .faq-more {
            text-align: center;
            font-size: 15px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .faq-more a {
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color .2s ease;
        }

        .faq-more a:hover {
            text-decoration: underline;
        }

        /* 技术支持方向 */
        .support-services {
            padding: 96px 0;
            background: #F0F7F5;
        }

        .service-card {
            background: #FFFFFF;
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            padding: 32px 26px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .3s ease;
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 118, 110, 0.2);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: background .25s ease, transform .25s ease;
        }

        .service-icon i {
            font-size: 26px;
            color: var(--primary);
        }

        .service-card:hover .service-icon {
            background: var(--primary);
            transform: scale(1.05);
        }

        .service-card:hover .service-icon i {
            color: #fff;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 18px;
            min-height: 48px;
        }

        .service-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(217, 119, 6, 0.1);
            border-radius: var(--radius-tag);
            padding: 4px 12px;
            letter-spacing: 0.02em;
        }

        /* 联系卡片 */
        .contact-center {
            padding: 96px 0;
            background: #FFFFFF;
        }

        .contact-main-card {
            background: var(--dark);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            color: #fff;
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

        .contact-main-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -30px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(217, 119, 6, 0.18) 0%, transparent 70%);
            border-radius: 50%;
        }

        .contact-main-card .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #F0B429;
            align-self: flex-start;
        }

        .contact-main-card h2 {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .contact-main-card>p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .contact-list {
            margin-top: auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .contact-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            padding: 14px 18px;
            transition: background .25s ease, transform .25s ease;
        }

        .contact-list li:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(3px);
        }

        .contact-list i {
            font-size: 20px;
            color: #F0B429;
            margin-top: 3px;
        }

        .contact-list strong {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
        }

        .contact-list span {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
        }

        .support-info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px;
            height: 100%;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .support-info-card .info-top {
            margin-bottom: 24px;
        }

        .support-info-card .info-top h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .support-info-card .info-top p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .support-media {
            border-radius: 14px;
            overflow: hidden;
            margin-bottom: 24px;
            position: relative;
        }

        .support-media img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .support-info-card:hover .support-media img {
            transform: scale(1.03);
        }

        .support-media .media-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 31, 26, 0.72);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            color: #F0B429;
            font-size: 13px;
            font-weight: 600;
            border-radius: 8px;
            padding: 4px 14px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .process-steps {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .mini-step {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-page);
            border-radius: 12px;
            padding: 14px 18px;
            border-left: 3px solid var(--primary);
            transition: background .25s ease, transform .25s ease;
        }

        .mini-step:hover {
            background: var(--primary-light);
            transform: translateX(3px);
        }

        .mini-step span {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            min-width: 34px;
        }

        .mini-step p {
            margin: 0;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* CTA */
        .cta-section {
            padding: 72px 0;
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 80% 20%, rgba(15, 118, 110, 0.25), transparent 45%),
                radial-gradient(circle at 15% 85%, rgba(217, 119, 6, 0.12), transparent 40%);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 30px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-accent-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1F2937;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 30px;
            box-shadow: var(--shadow-cta);
            transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .btn-accent-custom:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: scale(1.02) translateY(-1px);
            box-shadow: 0 6px 20px rgba(217, 119, 6, 0.45);
            text-decoration: none;
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: var(--radius-btn);
            padding: 14px 30px;
            transition: background .25s ease, border-color .25s ease, color .25s ease;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #F0B429;
            color: #F0B429;
            text-decoration: none;
        }

        /* 返回首页 */
        .back-home {
            padding: 32px 0 56px;
            background: var(--dark);
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .back-home a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            transition: color .2s ease, gap .2s ease;
        }

        .back-home a:hover {
            color: #F0B429;
            gap: 12px;
            text-decoration: none;
        }

        .back-home i {
            font-size: 18px;
        }

        /* 页脚 */
        .site-footer {
            background: #0B1F1A;
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 0;
            font-size: 14px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .footer-logo i {
            color: #F0B429;
            font-size: 26px;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            margin-bottom: 18px;
            max-width: 320px;
        }

        .footer-icp {
            display: inline-block;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            background: rgba(255, 255, 255, 0.04);
            border-radius: 6px;
            padding: 4px 10px;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a,
        .footer-contact li {
            color: rgba(255, 255, 255, 0.55);
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-links a:hover {
            color: #F0B429;
            text-decoration: none;
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 14px;
            line-height: 1.6;
        }

        .footer-contact i {
            color: #F0B429;
            margin-top: 4px;
        }

        .footer-bottom {
            margin-top: 56px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.55);
            font-size: 16px;
            transition: background .2s ease, color .2s ease, transform .2s ease;
        }

        .footer-social a:hover {
            background: rgba(217, 119, 6, 0.2);
            color: #F0B429;
            transform: translateY(-2px);
            text-decoration: none;
        }

        /* 响应式 */
        @media (max-width: 1199.98px) {
            .page-banner h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 72px 0;
            }

            .page-banner {
                padding: 116px 0 60px;
            }

            .page-banner h1 {
                font-size: 34px;
            }

            .section-head h2 {
                font-size: 27px;
            }

            .cta-inner h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .support-services {
                padding: 56px 0;
            }

            .page-banner {
                padding: 108px 0 48px;
            }

            .page-banner h1 {
                font-size: 28px;
                line-height: 1.35;
            }

            .page-banner .banner-sub {
                font-size: 15px;
            }

            .banner-actions .btn-primary-custom,
            .banner-actions .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }

            .faq-section {
                padding: 56px 0;
            }

            .faq-accordion .accordion-button {
                font-size: 15px;
                padding: 15px 16px;
            }

            .faq-accordion .accordion-body {
                padding: 16px;
                font-size: 14px;
            }

            .contact-center {
                padding: 56px 0;
            }

            .contact-main-card {
                padding: 28px 24px;
            }

            .support-info-card {
                padding: 24px 20px;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .cta-buttons .btn-accent-custom,
            .cta-buttons .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }

            .back-home {
                padding: 24px 0 40px;
            }

            .site-footer {
                padding: 56px 0 0;
            }

            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }

            .footer-bottom span {
                order: 2;
            }

            .footer-social {
                order: 1;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .navbar-brand {
                font-size: 15px;
                white-space: normal;
                line-height: 1.4;
            }

            .navbar-brand i {
                font-size: 22px;
                flex-shrink: 0;
            }

            .page-banner h1 {
                font-size: 25px;
            }

            .section-head h2 {
                font-size: 22px;
            }

            .section-tag {
                font-size: 12px;
            }

            .service-card {
                padding: 26px 20px;
            }

            .service-card p {
                min-height: 0;
            }

            .contact-main-card h2 {
                font-size: 22px;
            }

            .contact-list li {
                padding: 12px 14px;
            }

            .contact-list span {
                font-size: 14px;
                word-break: break-all;
            }

            .support-media img {
                height: 140px;
            }

            .mini-step {
                padding: 12px 14px;
                gap: 12px;
            }

            .mini-step span {
                font-size: 17px;
                min-width: 28px;
            }

            .faq-more {
                flex-direction: column;
                gap: 4px;
            }
        }