/* roulang page: index */
:root {
            --primary: #0f2557;
            --primary-light: #1d3a7a;
            --primary-dark: #08183a;
            --accent: #f5b71a;
            --accent-dark: #d99e0f;
            --accent-rgb: 245, 183, 26;
            --teal: #17a398;
            --bg-light: #f6f8fb;
            --bg-white: #ffffff;
            --text-dark: #101828;
            --text-body: #4a5368;
            --text-muted: #7c8698;
            --border-color: #e8ebf0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 8px rgba(15, 37, 87, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 37, 87, 0.1);
            --shadow-lg: 0 16px 40px rgba(15, 37, 87, 0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.35, 1);
        }

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

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

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--primary-light);
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        .bg-soft {
            background-color: var(--bg-light);
        }

        .section-padding {
            padding: 90px 0;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(var(--accent-rgb), 0.12);
            color: #b8860b;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 100px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin: 0;
        }

        .btn {
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 2px solid transparent;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #0f2557;
            border-color: var(--accent);
            box-shadow: 0 4px 16px rgba(245, 183, 26, 0.3);
        }

        .btn-accent:hover {
            background-color: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #0f2557;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 183, 26, 0.35);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(15, 37, 87, 0.2);
        }

        .btn-primary-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 37, 87, 0.25);
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 3px solid rgba(var(--accent-rgb), 0.4);
            outline-offset: 2px;
            box-shadow: none;
        }

        /* ========== 导航 ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(232, 235, 240, 0.8);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(15, 37, 87, 0.04);
        }

        .navbar {
            padding-top: 14px;
            padding-bottom: 14px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.28rem;
            color: var(--primary);
            letter-spacing: -0.3px;
            line-height: 1.2;
        }

        .brand-logo .logo-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            color: var(--accent);
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(15, 37, 87, 0.18);
        }

        .brand-logo:hover {
            color: var(--primary);
        }

        .navbar-nav {
            gap: 6px;
            margin-left: 24px;
        }

        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text-body);
            font-size: 0.95rem;
            padding: 8px 14px !important;
            border-radius: 100px;
            transition: var(--transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 37, 87, 0.05);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(15, 37, 87, 0.07);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

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

        .nav-search {
            position: relative;
            width: 220px;
        }

        .nav-search .form-control {
            height: 42px;
            border-radius: 100px;
            border: 1px solid var(--border-color);
            padding: 8px 38px 8px 18px;
            font-size: 0.9rem;
            background: var(--bg-light);
            transition: var(--transition);
            width: 100%;
        }

        .nav-search .form-control:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(15, 37, 87, 0.08);
            outline: none;
        }

        .nav-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }

        .nav-login-btn {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: 100px;
            padding: 8px 20px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-login-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), #ffcb4d);
            color: var(--primary);
            border: none;
            border-radius: 100px;
            padding: 10px 24px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(245, 183, 26, 0.3);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 183, 26, 0.4);
            color: var(--primary-dark);
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
            color: var(--primary);
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(var(--accent-rgb), 0.5);
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            min-height: 650px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 100px 0;
            overflow: hidden;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg,
                    rgba(8, 24, 58, 0.92) 0%,
                    rgba(15, 37, 87, 0.82) 40%,
                    rgba(15, 37, 87, 0.55) 100%);
            z-index: 1;
        }

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

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 100px;
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
            margin-bottom: 24px;
        }

        .hero-tag i {
            color: var(--accent);
        }

        .hero-title {
            font-size: 3.4rem;
            font-weight: 900;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }

        .hero-desc {
            font-size: 1.15rem;
            line-height: 1.8;
            max-width: 600px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 34px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 52px;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 28px;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-item .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-item .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ========== 核心说明 ========== */
        .about-section {
            background: var(--bg-white);
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .about-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(15, 37, 87, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .about-content h2 {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .about-content p {
            font-size: 1.02rem;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .about-feature-list {
            list-style: none;
            padding: 0;
            margin: 18px 0 0;
        }

        .about-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            color: var(--text-body);
            font-size: 0.98rem;
        }

        .about-feature-list li i {
            color: var(--teal);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .about-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .about-image-wrap img {
            width: 100%;
            height: 460px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .about-image-wrap:hover img {
            transform: scale(1.03);
        }

        .about-image-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            padding: 14px 20px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-md);
        }

        .about-image-badge .badge-icon {
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
        }

        .about-image-badge .badge-text {
            display: flex;
            flex-direction: column;
        }

        .about-image-badge .badge-text strong {
            color: var(--text-dark);
            font-size: 0.95rem;
        }

        .about-image-badge .badge-text span {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ========== 功能特性 ========== */
        .features-section {
            background: var(--bg-light);
            padding: 90px 0;
            position: relative;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            height: 100%;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--primary-light));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .feature-card:hover::after {
            opacity: 1;
        }

        .feature-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(15, 37, 87, 0.08), rgba(15, 37, 87, 0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--accent);
            transform: scale(1.08);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
        }

        /* ========== 分类入口 ========== */
        .category-section {
            background: var(--bg-white);
            padding: 90px 0;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--primary);
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            color: #fff;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
        }

        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.45;
            transition: all 0.5s ease;
        }

        .category-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(8, 24, 58, 0.95) 100%);
            z-index: 2;
        }

        .category-card:hover img {
            transform: scale(1.06);
            opacity: 0.35;
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .category-card-body {
            position: relative;
            z-index: 3;
            padding: 32px 28px;
            width: 100%;
        }

        .category-card-body h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: #fff;
        }

        .category-card-body p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent) !important;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .category-card-link:hover {
            gap: 12px;
        }

        /* ========== 流程步骤 ========== */
        .process-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            padding: 90px 0;
            color: #fff;
        }

        .process-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 24, 58, 0.95), rgba(15, 37, 87, 0.88));
        }

        .process-section .container {
            position: relative;
            z-index: 2;
        }

        .process-section .section-header h2 {
            color: #fff;
        }

        .process-section .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .process-step {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }

        .process-step .step-number {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            transition: var(--transition);
        }

        .process-step:hover .step-number {
            background: var(--accent);
            color: var(--primary);
            transform: scale(1.1);
        }

        .process-step h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }

        .process-step p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
            margin: 0;
            line-height: 1.7;
        }

        .process-arrow {
            position: absolute;
            right: -20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent);
            font-size: 1.2rem;
            z-index: 3;
            opacity: 0.7;
        }

        /* ========== 最新资讯 ========== */
        .news-section {
            background: var(--bg-light);
            padding: 90px 0;
        }

        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .news-card-body {
            padding: 28px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-tag {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            background: rgba(15, 37, 87, 0.06);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-bottom: 16px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: auto;
        }

        .news-meta .news-date {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-meta .news-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .news-card:hover .news-link {
            gap: 10px;
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
        }

        .empty-state i {
            font-size: 2.8rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .empty-state p {
            color: var(--text-muted);
            font-size: 1rem;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-white);
            padding: 90px 0;
        }

        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:last-child {
            margin-bottom: 0;
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(15, 37, 87, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
            background: var(--accent);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            padding: 0 24px 22px;
            max-height: 260px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            padding: 90px 0;
            color: #fff;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 24, 58, 0.92), rgba(15, 37, 87, 0.85));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 900;
            margin-bottom: 18px;
            color: #fff;
        }

        .cta-section p {
            max-width: 560px;
            margin: 0 auto 30px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
        }

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

        .cta-section .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            padding: 14px 36px;
            font-size: 1rem;
        }

        .cta-section .btn-outline-light {
            padding: 14px 36px;
            font-size: 1rem;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 30px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 24px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 26px;
            margin-top: 50px;
        }

        .footer-bottom .footer-copy {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

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

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

        /* ========== 辅助工具 ========== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: var(--accent);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            opacity: 0;
            transition: var(--transition);
            border: none;
        }

        .back-to-top.show {
            opacity: 1;
        }

        .back-to-top:hover {
            transform: translateY(-4px);
            background: var(--accent);
            color: var(--primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .container {
                max-width: 100%;
            }

            .hero-title {
                font-size: 2.8rem;
            }

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

            .process-arrow {
                display: none;
            }

            .section-padding {
                padding: 70px 0;
            }

            .about-section,
            .features-section,
            .category-section,
            .process-section,
            .news-section,
            .faq-section,
            .cta-section {
                padding: 70px 0;
            }

            .nav-search {
                width: 180px;
            }
        }

        @media (max-width: 768px) {
            .navbar-nav {
                margin: 12px 0;
                gap: 2px;
            }

            .nav-actions {
                margin-top: 12px;
                flex-wrap: wrap;
                gap: 10px;
            }

            .nav-search {
                width: 100%;
                order: 1;
            }

            .nav-login-btn {
                order: 2;
            }

            .nav-cta-btn {
                order: 3;
                flex: 1;
            }

            .hero-section {
                min-height: 540px;
                padding: 70px 0;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 24px;
            }

            .about-content h2 {
                font-size: 1.7rem;
            }

            .about-image-wrap img {
                height: 340px;
            }

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

            .category-card {
                min-height: 300px;
            }

            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }

            .btn {
                padding: 10px 22px;
                font-size: 0.9rem;
            }

            .section-header h2 {
                font-size: 1.7rem;
            }

            .about-section,
            .features-section,
            .category-section,
            .process-section,
            .news-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-section {
                min-height: 480px;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-desc {
                font-size: 0.92rem;
            }

            .hero-buttons {
                gap: 10px;
            }

            .hero-buttons .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
                width: 100%;
            }

            .hero-stats {
                gap: 18px;
                flex-direction: column;
            }

            .footer-col {
                margin-bottom: 30px;
            }
        }

/* roulang page: article */
:root {
            --brand-primary: #2563eb;
            --brand-primary-dark: #1e40af;
            --brand-secondary: #f59e0b;
            --brand-accent: #10b981;
            --dark-bg: #0f172a;
            --dark-bg-2: #1e293b;
            --light-bg: #f8fafc;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(15, 23, 42, 0.05);
            --shadow: 0 8px 28px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: #ffffff;
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--brand-primary-dark);
        }

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

        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 2px 18px rgba(15, 23, 42, 0.04);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            color: var(--text-main);
        }

        .brand-logo:hover {
            color: var(--brand-primary);
        }

        .brand-logo .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
        }

        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 16px !important;
            border-radius: 10px;
            position: relative;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(37, 99, 235, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary);
            background: rgba(37, 99, 235, 0.08);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand-primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .nav-search {
            position: relative;
        }

        .nav-search .form-control {
            border: 1.5px solid var(--border-color);
            border-radius: 50px;
            padding: 8px 40px 8px 18px;
            font-size: 0.9rem;
            width: 190px;
            background: var(--light-bg);
            transition: var(--transition);
        }

        .nav-search .form-control:focus {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.12);
            background: #fff;
        }

        .nav-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }

        .nav-login-btn {
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-main);
            border: 1.5px solid var(--border-color);
            background: #fff;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-login-btn:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: rgba(37, 99, 235, 0.04);
            transform: translateY(-1px);
        }

        .nav-cta-btn {
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            border: none;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(37, 99, 235, 0.4);
            color: #fff;
        }

        .navbar-toggler {
            border: 1.5px solid var(--border-color);
            border-radius: 10px;
            padding: 6px 10px;
            color: var(--text-main);
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--brand-primary);
        }

        .article-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(37, 99, 235, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 90px 0 70px;
            color: #fff;
            overflow: hidden;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

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

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
        }

        .article-breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
        }

        .article-breadcrumb a:hover {
            color: #fff;
        }

        .article-breadcrumb .sep {
            opacity: 0.5;
            font-size: 0.7rem;
        }

        .hero-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 5px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
            margin-bottom: 18px;
        }

        .article-hero-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: -0.02em;
            max-width: 780px;
            margin-bottom: 22px;
            color: #fff;
            word-break: break-word;
        }

        .article-hero-meta {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .article-hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-hero-meta i {
            opacity: 0.7;
        }

        .article-main {
            padding: 60px 0 80px;
            background: #f8fafc;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 40px;
        }

        .article-body-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            overflow: hidden;
        }

        .article-meta-bar {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            padding-bottom: 22px;
            margin-bottom: 28px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-meta-bar span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-content {
            font-size: 1.02rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-main);
            font-weight: 700;
            margin-top: 1.6em;
            margin-bottom: 0.8em;
            line-height: 1.4;
        }

        .article-content h2 {
            font-size: 1.55rem;
        }

        .article-content h3 {
            font-size: 1.28rem;
        }

        .article-content p {
            margin-bottom: 1.3em;
        }

        .article-content a {
            color: var(--brand-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.4em;
            margin-bottom: 1.3em;
        }

        .article-content li {
            margin-bottom: 0.5em;
        }

        .article-content blockquote {
            border-left: 4px solid var(--brand-primary);
            background: rgba(37, 99, 235, 0.05);
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            color: var(--text-muted);
            margin: 1.5em 0;
        }

        .article-content img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }

        .article-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding-top: 28px;
            margin-top: 36px;
            border-top: 1px solid var(--border-color);
        }

        .article-tags .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .tag-chip {
            background: rgba(37, 99, 235, 0.08);
            color: var(--brand-primary);
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-chip:hover {
            background: var(--brand-primary);
            color: #fff;
            transform: translateY(-1px);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px dashed var(--border-color);
        }

        .article-share .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-right: 4px;
        }

        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            transition: var(--transition);
        }

        .share-btn:hover {
            background: var(--brand-primary);
            color: #fff;
            border-color: var(--brand-primary);
            transform: translateY(-2px);
        }

        .sidebar-widget {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            margin-bottom: 24px;
            transition: var(--transition);
        }

        .sidebar-widget:hover {
            box-shadow: var(--shadow);
        }

        .sidebar-widget-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
            padding-bottom: 14px;
        }

        .sidebar-widget-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 36px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand-primary);
        }

        .sidebar-widget-title i {
            color: var(--brand-primary);
            font-size: 1.1rem;
        }

        .widget-about p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .widget-about .about-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(16, 185, 129, 0.1);
            color: #059669;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

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

        .widget-links li {
            margin-bottom: 4px;
        }

        .widget-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            color: var(--text-main);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .widget-links a i {
            color: var(--brand-primary);
            font-size: 0.75rem;
        }

        .widget-links a:hover {
            background: rgba(37, 99, 235, 0.06);
            color: var(--brand-primary);
            padding-left: 18px;
        }

        .security-card {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(37, 99, 235, 0.85)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 26px;
            color: #fff;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .security-card::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .security-card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }

        .security-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .security-card p {
            font-size: 0.85rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 0;
        }

        .not-found-box {
            text-align: center;
            padding: 60px 0;
        }

        .not-found-box .icon-circle {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--brand-primary);
            margin: 0 auto 24px;
        }

        .not-found-box h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .not-found-box p {
            color: var(--text-muted);
            max-width: 400px;
            margin: 0 auto 28px;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 50px;
            background: var(--brand-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
            color: #fff;
        }

        .related-section {
            padding: 70px 0 30px;
            background: #fff;
        }

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

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--brand-primary);
            padding: 5px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 560px;
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .related-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .related-card .card-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(10px);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .related-card .card-body {
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-card .card-body h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 10px;
            flex: 1;
        }

        .related-card .card-body h3 a {
            color: inherit;
        }

        .related-card .card-body h3 a:hover {
            color: var(--brand-primary);
        }

        .related-card .card-desc {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .related-card .card-meta {
            font-size: 0.8rem;
            color: #94a3b8;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .cta-section {
            padding: 70px 0 80px;
            background: #f8fafc;
        }

        .cta-box {
            background: linear-gradient(135deg, #0f172a, #1e3a8a), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 30%;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.12);
        }

        .cta-box h2 {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin-bottom: 26px;
            position: relative;
            z-index: 2;
        }

        .cta-btns {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .cta-btn-primary {
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--brand-secondary);
            color: #0f172a;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
        }

        .cta-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.45);
            color: #0f172a;
        }

        .cta-btn-outline {
            padding: 12px 32px;
            border-radius: 50px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }

        .cta-btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }

        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding-top: 70px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .footer-brand .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
        }

        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand-primary);
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-links a i {
            font-size: 0.65rem;
            color: var(--brand-primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            margin-top: 50px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom .text-md-end {
            text-align: right;
        }

        @media (max-width: 1199px) {
            .article-layout {
                grid-template-columns: minmax(0, 1fr) 320px;
            }
        }

        @media (max-width: 992px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .nav-search {
                flex: 1;
                min-width: 200px;
            }

            .nav-actions {
                padding-top: 14px;
                border-top: 1px solid var(--border-color);
            }

            .nav-actions .nav-search {
                width: 100%;
            }

            .nav-search .form-control {
                width: 100%;
            }

            .article-hero {
                padding: 70px 0 50px;
            }

            .article-hero-title {
                font-size: 1.9rem;
            }

            .article-body-wrap {
                padding: 30px 28px;
            }

            .cta-box {
                padding: 44px 30px;
            }

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

        @media (max-width: 768px) {
            .nav-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .nav-login-btn,
            .nav-cta-btn {
                text-align: center;
                justify-content: center;
            }

            .article-hero {
                padding: 50px 0 40px;
            }

            .article-hero-title {
                font-size: 1.5rem;
            }

            .article-hero-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .article-main {
                padding: 40px 0 60px;
            }

            .article-body-wrap {
                padding: 24px 20px;
                border-radius: var(--radius);
            }

            .article-content {
                font-size: 0.95rem;
            }

            .sidebar-widget {
                padding: 22px;
            }

            .related-section {
                padding: 50px 0 20px;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .cta-section {
                padding: 50px 0 60px;
            }

            .cta-box {
                border-radius: var(--radius);
                padding: 36px 24px;
            }

            .cta-btns {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-btn-primary,
            .cta-btn-outline {
                text-align: center;
            }

            .footer-bottom .text-md-end {
                text-align: left;
                margin-top: 6px;
            }

            .article-meta-bar {
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .brand-logo {
                font-size: 1.05rem;
            }

            .brand-logo .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }

            .article-hero-title {
                font-size: 1.3rem;
            }

            .article-hero-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }

            .article-content h3 {
                font-size: 1.1rem;
            }

            .not-found-box {
                padding: 40px 0;
            }

            .related-card .card-img-wrap {
                height: 150px;
            }
        }

/* roulang page: category1 */
:root{
            --primary:#1e3a5f;
            --primary-dark:#142b45;
            --accent:#e8a33d;
            --accent-hover:#d48f2a;
            --bg-light:#f4f6fa;
            --bg-white:#ffffff;
            --text-main:#2c3e50;
            --text-muted:#6b7b8d;
            --border-light:#e8ecf2;
            --radius-md:14px;
            --radius-lg:24px;
            --shadow-sm:0 2px 14px rgba(30,58,95,0.06);
            --shadow-md:0 10px 34px rgba(30,58,95,0.10);
            --shadow-lg:0 20px 48px rgba(30,58,95,0.16);
            --transition:0.3s ease;
        }
        *, *::before, *::after{
            box-sizing:border-box;
        }
        html{
            scroll-behavior:smooth;
        }
        body{
            font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
            font-size:16px;
            line-height:1.75;
            color:var(--text-main);
            background:var(--bg-light);
            -webkit-font-smoothing:antialiased;
            overflow-x:hidden;
        }
        a{
            text-decoration:none;
            color:inherit;
            transition:color var(--transition), opacity var(--transition);
        }
        a:hover{
            text-decoration:none;
        }
        img{
            max-width:100%;
            height:auto;
            display:block;
        }
        button, input, select{
            font-family:inherit;
        }
        .container{
            max-width:1200px;
        }

        /* ===== Header / Nav ===== */
        .site-header{
            background:rgba(20,43,69,0.96);
            backdrop-filter:blur(12px);
            border-bottom:1px solid rgba(255,255,255,0.08);
            position:sticky;
            top:0;
            z-index:1080;
            box-shadow:0 4px 24px rgba(0,0,0,0.30);
        }
        .site-header .navbar{
            padding:14px 0;
        }
        .brand-logo{
            display:inline-flex;
            align-items:center;
            gap:10px;
            font-size:1.28rem;
            font-weight:700;
            color:#ffffff;
            letter-spacing:0.3px;
            white-space:nowrap;
        }
        .brand-logo:hover{
            color:var(--accent);
        }
        .logo-icon{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            width:38px;
            height:38px;
            background:linear-gradient(135deg,var(--accent),#f5b95f);
            border-radius:10px;
            color:#142b45;
            font-size:1.05rem;
            box-shadow:0 4px 12px rgba(232,163,61,0.35);
        }
        .navbar-nav{
            gap:4px;
            margin-left:20px;
        }
        .navbar-nav .nav-link{
            color:rgba(255,255,255,0.75);
            font-size:0.94rem;
            font-weight:500;
            padding:8px 16px;
            border-radius:8px;
            transition:color var(--transition), background var(--transition);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus{
            color:#ffffff;
            background:rgba(255,255,255,0.10);
        }
        .navbar-nav .nav-link.active{
            color:#ffffff;
            background:rgba(232,163,61,0.18);
            box-shadow:inset 0 -2px 0 var(--accent);
        }
        .nav-actions{
            display:flex;
            align-items:center;
            gap:10px;
            flex-wrap:wrap;
        }
        .nav-search{
            position:relative;
            width:190px;
        }
        .nav-search .form-control{
            background:rgba(255,255,255,0.10);
            border:1px solid rgba(255,255,255,0.14);
            border-radius:20px;
            color:#ffffff;
            padding:7px 36px 7px 16px;
            font-size:0.86rem;
            height:38px;
            transition:border-color var(--transition), background var(--transition);
        }
        .nav-search .form-control::placeholder{
            color:rgba(255,255,255,0.50);
        }
        .nav-search .form-control:focus{
            background:rgba(255,255,255,0.16);
            border-color:var(--accent);
            box-shadow:0 0 0 3px rgba(232,163,61,0.20);
            color:#ffffff;
            outline:none;
        }
        .nav-search .search-icon{
            position:absolute;
            right:13px;
            top:50%;
            transform:translateY(-50%);
            color:rgba(255,255,255,0.55);
            font-size:0.80rem;
            pointer-events:none;
        }
        .nav-login-btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:7px 16px;
            border-radius:20px;
            font-size:0.88rem;
            font-weight:500;
            color:#ffffff;
            background:rgba(255,255,255,0.12);
            border:1px solid rgba(255,255,255,0.20);
            transition:background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .nav-login-btn:hover{
            background:rgba(255,255,255,0.20);
            border-color:rgba(255,255,255,0.35);
            transform:translateY(-1px);
        }
        .nav-cta-btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:7px 20px;
            border-radius:20px;
            font-size:0.88rem;
            font-weight:600;
            color:var(--primary-dark);
            background:linear-gradient(135deg,var(--accent),#f5b95f);
            box-shadow:0 4px 14px rgba(232,163,61,0.40);
            transition:transform var(--transition), box-shadow var(--transition), filter var(--transition);
        }
        .nav-cta-btn:hover{
            transform:translateY(-2px);
            box-shadow:0 6px 22px rgba(232,163,61,0.50);
            filter:brightness(1.03);
            color:var(--primary-dark);
        }
        .navbar-toggler{
            border:1px solid rgba(255,255,255,0.30);
            border-radius:8px;
            color:#ffffff;
            padding:6px 10px;
            font-size:1rem;
            background:rgba(255,255,255,0.06);
        }
        .navbar-toggler:focus{
            box-shadow:0 0 0 3px rgba(232,163,61,0.25);
        }

        /* ===== Hero ===== */
        .page-hero{
            position:relative;
            background-size:cover;
            background-position:center;
            padding:92px 0 84px;
            color:#ffffff;
            overflow:hidden;
        }
        .hero-overlay{
            position:absolute;
            inset:0;
            background:linear-gradient(130deg, rgba(16,34,56,0.94) 0%, rgba(30,58,95,0.78) 55%, rgba(232,163,61,0.40) 100%);
        }
        .hero-content{
            position:relative;
            z-index:2;
            max-width:720px;
        }
        .hero-badge{
            display:inline-flex;
            align-items:center;
            gap:8px;
            background:rgba(232,163,61,0.20);
            color:#f5c575;
            border:1px solid rgba(232,163,61,0.38);
            border-radius:20px;
            padding:6px 18px;
            font-size:0.86rem;
            font-weight:600;
            letter-spacing:0.4px;
            margin-bottom:24px;
        }
        .hero-badge i{
            font-size:0.78rem;
        }
        .hero-content h1{
            font-size:2.55rem;
            font-weight:800;
            line-height:1.30;
            letter-spacing:-0.5px;
            margin-bottom:18px;
        }
        .hero-content h1 span{
            color:var(--accent);
        }
        .hero-content p{
            font-size:1.05rem;
            color:rgba(255,255,255,0.82);
            line-height:1.80;
            margin-bottom:32px;
            max-width:620px;
        }
        .hero-actions{
            display:flex;
            gap:14px;
            flex-wrap:wrap;
        }
        .custom-btn-primary{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:11px 30px;
            border-radius:22px;
            background:linear-gradient(135deg,var(--accent),#f2b353);
            color:var(--primary-dark);
            font-weight:600;
            font-size:0.96rem;
            border:none;
            box-shadow:0 6px 18px rgba(232,163,61,0.36);
            transition:transform var(--transition), box-shadow var(--transition), filter var(--transition);
        }
        .custom-btn-primary:hover{
            transform:translateY(-2px);
            box-shadow:0 10px 28px rgba(232,163,61,0.46);
            filter:brightness(1.04);
            color:var(--primary-dark);
        }
        .custom-btn-outline{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:11px 30px;
            border-radius:22px;
            background:rgba(255,255,255,0.08);
            color:#ffffff;
            font-weight:500;
            font-size:0.96rem;
            border:1px solid rgba(255,255,255,0.30);
            backdrop-filter:blur(4px);
            transition:background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .custom-btn-outline:hover{
            background:rgba(255,255,255,0.15);
            border-color:rgba(255,255,255,0.55);
            color:#ffffff;
            transform:translateY(-2px);
        }

        /* ===== Section Blocks ===== */
        .section-block{
            padding:80px 0;
        }
        .section-block .section-label{
            display:inline-flex;
            align-items:center;
            gap:8px;
            color:var(--accent);
            font-size:0.84rem;
            font-weight:600;
            letter-spacing:1px;
            text-transform:uppercase;
            margin-bottom:10px;
        }
        .section-block .section-title{
            font-size:2rem;
            font-weight:800;
            color:var(--primary);
            line-height:1.35;
            margin-bottom:14px;
            letter-spacing:-0.3px;
        }
        .section-block .section-subtitle{
            font-size:1.02rem;
            color:var(--text-muted);
            max-width:680px;
            line-height:1.80;
        }

        /* ===== Method Cards ===== */
        .method-card{
            background:var(--bg-white);
            border-radius:var(--radius-md);
            padding:28px 26px;
            border:1px solid var(--border-light);
            box-shadow:var(--shadow-sm);
            height:100%;
            transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .method-card:hover{
            transform:translateY(-6px);
            box-shadow:var(--shadow-md);
            border-color:rgba(232,163,61,0.28);
        }
        .method-icon{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            width:56px;
            height:56px;
            border-radius:16px;
            font-size:1.45rem;
            margin-bottom:18px;
            background:linear-gradient(135deg, rgba(30,58,95,0.06), rgba(232,163,61,0.10));
            color:var(--primary);
        }
        .method-card h3{
            font-size:1.10rem;
            font-weight:700;
            color:var(--primary);
            margin-bottom:10px;
        }
        .method-card p{
            font-size:0.92rem;
            color:var(--text-muted);
            line-height:1.70;
            margin-bottom:14px;
        }
        .method-tag{
            display:inline-block;
            background:rgba(232,163,61,0.10);
            color:var(--accent-hover);
            border-radius:6px;
            padding:3px 10px;
            font-size:0.78rem;
            font-weight:600;
        }

        /* ===== Steps ===== */
        .steps-section{
            background:var(--primary);
            color:#ffffff;
            position:relative;
            overflow:hidden;
        }
        .steps-section::before{
            content:'';
            position:absolute;
            width:420px;
            height:420px;
            border-radius:50%;
            background:rgba(232,163,61,0.08);
            top:-120px;
            right:-100px;
        }
        .steps-section .section-title{
            color:#ffffff;
        }
        .steps-section .section-subtitle{
            color:rgba(255,255,255,0.70);
        }
        .step-item{
            background:rgba(255,255,255,0.05);
            border:1px solid rgba(255,255,255,0.10);
            border-radius:var(--radius-md);
            padding:30px 24px;
            height:100%;
            backdrop-filter:blur(6px);
            transition:background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .step-item:hover{
            background:rgba(255,255,255,0.08);
            border-color:rgba(232,163,61,0.35);
            transform:translateY(-4px);
        }
        .step-number{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            width:42px;
            height:42px;
            border-radius:50%;
            background:linear-gradient(135deg,var(--accent),#f5b95f);
            color:var(--primary-dark);
            font-weight:800;
            font-size:1.05rem;
            margin-bottom:18px;
            box-shadow:0 6px 18px rgba(232,163,61,0.30);
        }
        .step-item h3{
            font-size:1.12rem;
            font-weight:700;
            margin-bottom:8px;
            color:#ffffff;
        }
        .step-item p{
            font-size:0.90rem;
            color:rgba(255,255,255,0.70);
            line-height:1.70;
            margin-bottom:0;
        }

        /* ===== Guide Cards ===== */
        .guide-card{
            background:var(--bg-white);
            border-radius:var(--radius-md);
            border:1px solid var(--border-light);
            box-shadow:var(--shadow-sm);
            overflow:hidden;
            height:100%;
            transition:transform var(--transition), box-shadow var(--transition);
        }
        .guide-card:hover{
            transform:translateY(-5px);
            box-shadow:var(--shadow-md);
        }
        .guide-image{
            position:relative;
            aspect-ratio:16/10;
            overflow:hidden;
        }
        .guide-image img{
            width:100%;
            height:100%;
            object-fit:cover;
            transition:transform 0.5s ease;
        }
        .guide-card:hover .guide-image img{
            transform:scale(1.04);
        }
        .guide-image::after{
            content:'';
            position:absolute;
            inset:0;
            background:linear-gradient(180deg, rgba(20,43,69,0) 60%, rgba(20,43,69,0.25) 100%);
        }
        .guide-badge{
            position:absolute;
            top:14px;
            left:14px;
            background:rgba(20,43,69,0.75);
            color:#ffffff;
            font-size:0.76rem;
            font-weight:600;
            padding:4px 12px;
            border-radius:16px;
            z-index:2;
            backdrop-filter:blur(4px);
        }
        .guide-content{
            padding:22px 24px 24px;
        }
        .guide-content h3{
            font-size:1.10rem;
            font-weight:700;
            color:var(--primary);
            margin-bottom:8px;
            line-height:1.45;
        }
        .guide-content p{
            font-size:0.90rem;
            color:var(--text-muted);
            line-height:1.70;
            margin-bottom:14px;
        }
        .guide-link{
            display:inline-flex;
            align-items:center;
            gap:6px;
            color:var(--accent-hover);
            font-size:0.86rem;
            font-weight:600;
        }
        .guide-link i{
            font-size:0.75rem;
            transition:transform var(--transition);
        }
        .guide-link:hover{
            color:var(--primary);
        }
        .guide-link:hover i{
            transform:translateX(3px);
        }

        /* ===== Tips Section ===== */
        .tips-section{
            background:var(--bg-white);
        }
        .tips-box{
            background:linear-gradient(135deg,var(--primary),var(--primary-dark));
            border-radius:var(--radius-lg);
            padding:40px 42px;
            color:#ffffff;
            position:relative;
            overflow:hidden;
        }
        .tips-box::after{
            content:'';
            position:absolute;
            width:280px;
            height:280px;
            border-radius:50%;
            border:1px solid rgba(232,163,61,0.30);
            top:-100px;
            right:-60px;
            box-shadow:0 0 0 46px rgba(232,163,61,0.05);
        }
        .tips-grid{
            display:grid;
            grid-template-columns:repeat(2,1fr);
            gap:20px;
            margin-top:24px;
            position:relative;
            z-index:2;
        }
        .tip-item{
            display:flex;
            gap:14px;
            align-items:flex-start;
            background:rgba(255,255,255,0.07);
            border:1px solid rgba(255,255,255,0.10);
            border-radius:var(--radius-md);
            padding:18px 20px;
            transition:background var(--transition), transform var(--transition);
        }
        .tip-item:hover{
            background:rgba(255,255,255,0.10);
            transform:translateY(-3px);
        }
        .tip-icon{
            flex:0 0 40px;
            width:40px;
            height:40px;
            display:inline-flex;
            align-items:center;
            justify-content:center;
            border-radius:12px;
            background:rgba(232,163,61,0.22);
            color:var(--accent);
            font-size:1rem;
        }
        .tip-item h4{
            font-size:1rem;
            font-weight:700;
            margin-bottom:4px;
            color:#ffffff;
        }
        .tip-item p{
            font-size:0.85rem;
            color:rgba(255,255,255,0.66);
            line-height:1.65;
            margin-bottom:0;
        }

        /* ===== FAQ ===== */
        .faq-wrapper{
            background:var(--bg-light);
        }
        .faq-card{
            background:var(--bg-white);
            border-radius:var(--radius-lg);
            border:1px solid var(--border-light);
            box-shadow:var(--shadow-sm);
            padding:26px;
            height:100%;
        }
        .faq-card h3{
            font-size:1.10rem;
            font-weight:700;
            color:var(--primary);
            margin-bottom:14px;
        }
        .faq-card .faq-context{
            font-size:0.90rem;
            color:var(--text-muted);
            line-height:1.75;
            margin-bottom:18px;
            padding-bottom:16px;
            border-bottom:1px dashed var(--border-light);
        }
        .faq-list-item{
            display:flex;
            align-items:flex-start;
            gap:10px;
            padding:10px 0;
            border-bottom:1px solid var(--border-light);
            cursor:pointer;
            transition:color var(--transition), padding-left var(--transition);
        }
        .faq-list-item:last-child{
            border-bottom:none;
        }
        .faq-list-item:hover{
            color:var(--primary);
            padding-left:6px;
        }
        .faq-list-item i{
            color:var(--accent);
            font-size:0.80rem;
            margin-top:6px;
            flex-shrink:0;
        }
        .faq-list-item span{
            font-size:0.92rem;
            font-weight:500;
            line-height:1.60;
        }
        .faq-accordion .accordion-item{
            background:var(--bg-white);
            border:1px solid var(--border-light);
            border-radius:var(--radius-md) !important;
            box-shadow:var(--shadow-sm);
            margin-bottom:12px;
            overflow:hidden;
        }
        .faq-accordion .accordion-item:last-child{
            margin-bottom:0;
        }
        .faq-accordion .accordion-header .accordion-button{
            background:var(--bg-white);
            color:var(--primary);
            font-weight:600;
            font-size:0.95rem;
            padding:18px 22px;
            box-shadow:none;
            border-radius:var(--radius-md) !important;
        }
        .faq-accordion .accordion-button:not(.collapsed){
            background:rgba(232,163,61,0.05);
            color:var(--accent-hover);
            border-bottom:1px solid var(--border-light);
        }
        .faq-accordion .accordion-button:focus{
            box-shadow:0 0 0 3px rgba(232,163,61,0.15);
            border-radius:var(--radius-md) !important;
        }
        .faq-accordion .accordion-button::after{
            background-image:none;
            content:'\f078';
            font-family:"Font Awesome 6 Free";
            font-weight:900;
            font-size:0.80rem;
            color:var(--accent);
            width:auto;
            height:auto;
            transition:transform var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after{
            transform:rotate(180deg);
        }
        .faq-accordion .accordion-body{
            background:var(--bg-white);
            color:var(--text-muted);
            font-size:0.92rem;
            line-height:1.78;
            padding:18px 22px 22px;
        }

        /* ===== CTA ===== */
        .cta-section{
            background:var(--bg-white);
            border-top:1px solid var(--border-light);
        }
        .cta-box{
            background:linear-gradient(135deg,var(--primary),var(--primary-dark));
            border-radius:var(--radius-lg);
            padding:52px 48px;
            color:#ffffff;
            text-align:center;
            position:relative;
            overflow:hidden;
        }
        .cta-box::before{
            content:'';
            position:absolute;
            width:320px;
            height:320px;
            border-radius:50%;
            border:1px solid rgba(232,163,61,0.20);
            top:-140px;
            left:-100px;
            box-shadow:0 0 0 46px rgba(232,163,61,0.04);
        }
        .cta-box::after{
            content:'';
            position:absolute;
            width:200px;
            height:200px;
            border-radius:50%;
            border:1px solid rgba(232,163,61,0.18);
            bottom:-80px;
            right:-50px;
        }
        .cta-box h2{
            font-size:1.80rem;
            font-weight:800;
            margin-bottom:12px;
            position:relative;
            z-index:1;
        }
        .cta-box p{
            color:rgba(255,255,255,0.72);
            font-size:1.00rem;
            margin-bottom:28px;
            max-width:560px;
            margin-left:auto;
            margin-right:auto;
            position:relative;
            z-index:1;
        }

        /* ===== Footer ===== */
        .site-footer{
            background:var(--primary-dark);
            color:#ffffff;
            padding:60px 0 0;
            margin-top:0;
        }
        .footer-brand{
            display:flex;
            align-items:center;
            gap:10px;
            font-size:1.22rem;
            font-weight:700;
            margin-bottom:18px;
        }
        .brand-icon{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            width:36px;
            height:36px;
            background:linear-gradient(135deg,var(--accent),#f5b95f);
            border-radius:10px;
            color:var(--primary-dark);
            font-size:1rem;
        }
        .footer-desc{
            font-size:0.92rem;
            color:rgba(255,255,255,0.60);
            line-height:1.75;
            margin-bottom:0;
            max-width:340px;
        }
        .footer-col h4{
            font-size:1rem;
            font-weight:600;
            color:#ffffff;
            margin-bottom:18px;
            position:relative;
            padding-bottom:10px;
        }
        .footer-col h4::after{
            content:'';
            position:absolute;
            left:0;
            bottom:0;
            width:24px;
            height:2px;
            background:var(--accent);
            border-radius:2px;
        }
        .footer-links{
            list-style:none;
            padding:0;
            margin:0;
        }
        .footer-links li{
            margin-bottom:9px;
        }
        .footer-links a{
            color:rgba(255,255,255,0.60);
            font-size:0.90rem;
            display:inline-flex;
            align-items:center;
            gap:7px;
            transition:color var(--transition), padding-left var(--transition);
        }
        .footer-links a:hover{
            color:var(--accent);
            padding-left:5px;
        }
        .footer-links a i{
            color:var(--accent);
            font-size:0.65rem;
        }
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,0.08);
            margin-top:44px;
            padding:20px 0;
        }
        .footer-bottom .copyright{
            font-size:0.86rem;
            color:rgba(255,255,255,0.50);
            margin-bottom:0;
        }
        .footer-bottom .footer-tip{
            font-size:0.86rem;
            color:rgba(255,255,255,0.55);
            margin-bottom:0;
        }

        /* ===== Back to top ===== */
        .back-top{
            position:fixed;
            right:22px;
            bottom:22px;
            width:44px;
            height:44px;
            border-radius:50%;
            background:var(--primary);
            color:#ffffff;
            border:none;
            box-shadow:var(--shadow-md);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1rem;
            z-index:999;
            opacity:0;
            visibility:hidden;
            transition:opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
        }
        .back-top.show{
            opacity:1;
            visibility:visible;
        }
        .back-top:hover{
            background:var(--accent);
            color:var(--primary-dark);
            transform:translateY(-4px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px){
            .nav-search{
                width:150px;
            }
            .navbar-nav{
                margin-left:0;
            }
            .hero-content h1{
                font-size:2.15rem;
            }
            .tips-grid{
                grid-template-columns:1fr;
            }
            .cta-box{
                padding:40px 28px;
            }
        }
        @media (max-width: 768px){
            .site-header .navbar{
                padding:10px 0;
            }
            .nav-actions{
                flex-direction:column;
                width:100%;
                margin-top:10px;
            }
            .nav-search{
                width:100%;
            }
            .nav-login-btn, .nav-cta-btn{
                width:100%;
            }
            .navbar-collapse{
                padding-top:10px;
            }
            .page-hero{
                padding:60px 0 54px;
            }
            .hero-content h1{
                font-size:1.72rem;
            }
            .hero-content p{
                font-size:0.96rem;
            }
            .section-block{
                padding:56px 0;
            }
            .section-block .section-title{
                font-size:1.50rem;
            }
            .tips-box{
                padding:28px 20px;
            }
            .cta-box h2{
                font-size:1.45rem;
            }
            .footer-bottom .col-md-8,
            .footer-bottom .col-md-4{
                text-align:center !important;
                margin-bottom:8px;
            }
        }
        @media (max-width: 520px){
            .brand-logo{
                font-size:0.98rem;
            }
            .logo-icon{
                width:32px;
                height:32px;
                font-size:0.88rem;
            }
            .hero-content h1{
                font-size:1.45rem;
            }
            .hero-actions .btn{
                padding:10px 18px;
                font-size:0.88rem;
            }
            .section-block .section-title{
                font-size:1.32rem;
            }
            .method-card{
                padding:20px 18px;
            }
            .guide-content{
                padding:18px 16px 20px;
            }
            .cta-box{
                padding:30px 18px;
                border-radius:18px;
            }
            .cta-box h2{
                font-size:1.25rem;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --dark: #0f172a;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.12);
  --transition: 0.3s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header ===== */
.site-header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226,232,240,0.8);
  position: sticky;
  top: 0;
  z-index: 1030;
  box-shadow: 0 2px 20px rgba(15,23,42,0.06);
}

.navbar {
  padding: 14px 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
  white-space: nowrap;
}

.brand-logo:hover {
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), #818cf8);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 4px 14px rgba(79,70,229,0.35);
}

.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  transition: all var(--transition);
  font-size: 0.95rem;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-search {
  position: relative;
}

.nav-search .form-control {
  border-radius: 30px;
  padding-left: 38px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 0.88rem;
  width: 200px;
  height: 40px;
  transition: all var(--transition);
}

.nav-search .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79,70,229,0.12);
  background: #fff;
  width: 230px;
}

.search-icon {
  position: absolute;
  left: 13px;
  top: 13px;
  color: var(--muted);
  font-size: 0.85rem;
  pointer-events: none;
}

.nav-login-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid #e0e7ff;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-login-btn:hover {
  background: #e0e7ff;
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 14px rgba(79,70,229,0.3);
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-cta-btn:hover {
  box-shadow: 0 6px 20px rgba(79,70,229,0.45);
  color: #fff;
  transform: translateY(-2px);
}

.navbar-toggler {
  border: none;
  color: var(--text);
  font-size: 1.3rem;
  padding: 4px 10px;
  border-radius: 8px;
}

.navbar-toggler:focus {
  box-shadow: none;
  background: var(--primary-light);
}

/* ===== Hero Banner ===== */
.page-banner {
  position: relative;
  background: var(--dark);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  padding: 120px 0 80px;
  overflow: hidden;
  text-align: center;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0.7) 0%, rgba(15,23,42,0.55) 100%);
}

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

.page-banner .breadcrumb {
  display: inline-flex;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 30px;
  padding: 6px 20px;
  margin-bottom: 20px;
}

.page-banner .breadcrumb a {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
}

.page-banner .breadcrumb a:hover {
  color: #fff;
}

.page-banner .breadcrumb .separator {
  color: rgba(255,255,255,0.5);
  margin: 0 8px;
  font-size: 0.75rem;
}

.page-banner .breadcrumb .current {
  color: #fff;
  font-size: 0.85rem;
}

.page-banner h1 {
  color: #fff;
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-banner .banner-desc {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 30px;
  padding: 8px 22px;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 8px;
  backdrop-filter: blur(4px);
}

.banner-badge i {
  color: var(--accent);
}

/* ===== Section General ===== */
.section-block {
  padding: 90px 0;
}

.section-block.alt {
  background: var(--surface);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 30px;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin-bottom: 48px;
  line-height: 1.8;
}

/* ===== Cards: Core Security ===== */
.security-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(15,23,42,0.04);
  transition: all var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.security-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #818cf8);
  opacity: 0;
  transition: opacity var(--transition);
}

.security-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79,70,229,0.25);
}

.security-card:hover::after {
  opacity: 1;
}

.security-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.security-icon.purple {
  background: var(--primary-light);
  color: var(--primary);
}

.security-icon.amber {
  background: var(--accent-light);
  color: #d97706;
}

.security-icon.green {
  background: #ecfdf5;
  color: #059669;
}

.security-icon.blue {
  background: #eff6ff;
  color: #2563eb;
}

.security-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.security-card p {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 0;
}

.security-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 16px;
  transition: gap var(--transition);
}

.security-card .card-link:hover {
  gap: 10px;
  color: var(--primary-dark);
}

/* ===== Compare Section ===== */
.compare-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 32px;
  height: 100%;
  transition: all var(--transition);
}

.compare-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.compare-card.danger {
  border-top: 4px solid #ef4444;
}

.compare-card.safe {
  border-top: 4px solid #10b981;
  background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
}

.compare-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.compare-tag.red {
  background: #fef2f2;
  color: #dc2626;
}

.compare-tag.green {
  background: #d1fae5;
  color: #059669;
}

.compare-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
}

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

.compare-card ul li {
  padding: 8px 0;
  color: var(--text);
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.compare-card ul li i {
  color: var(--muted);
  font-size: 0.75rem;
  position: relative;
  top: 7px;
}

.compare-card.danger ul li i {
  color: #ef4444;
}

.compare-card.safe ul li i {
  color: #10b981;
}

/* ===== Checklist ===== */
.checklist-wrap {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 40px;
  box-shadow: 0 4px 16px rgba(15,23,42,0.04);
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

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

.checklist-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #ecfdf5;
  color: #059669;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 4px;
}

.checklist-item h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 4px;
}

.checklist-item p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}

/* ===== Stats ===== */
.stats-section {
  position: relative;
  background: var(--dark);
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 80px 0;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15,23,42,0.88);
}

.stats-section .container {
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 30px 20px;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.stat-label {
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
  font-weight: 500;
}

.stat-item .stat-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  color: var(--accent);
}

/* ===== Practice Steps ===== */
.step-item {
  position: relative;
  padding: 32px 24px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  height: 100%;
  transition: all var(--transition);
}

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

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #818cf8);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 18px;
  box-shadow: 0 4px 12px rgba(79,70,229,0.3);
}

.step-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.step-item p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.8;
  margin: 0;
}

.step-arrow {
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 0.9rem;
  z-index: 2;
  opacity: 0.6;
}

@media (max-width: 767px) {
  .step-arrow {
    display: none;
  }
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 850px;
  margin: 0 auto;
}

.faq-accordion .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm) !important;
  margin-bottom: 16px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 2px 8px rgba(15,23,42,0.03);
}

.faq-accordion .accordion-button {
  background: var(--surface);
  color: var(--dark);
  font-weight: 600;
  font-size: 1rem;
  padding: 20px 24px;
}

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

.faq-accordion .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(79,70,229,0.15);
}

.faq-accordion .accordion-button::after {
  background-image: none;
  font-family: "Font Awesome 6 Free";
  content: "\f067";
  font-weight: 900;
  color: var(--primary);
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
  content: "\f068";
  transform: rotate(0deg);
}

.faq-accordion .accordion-body {
  padding: 20px 24px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
  background: var(--surface);
  border-top: 1px solid rgba(226,232,240,0.6);
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.cta-card {
  background: linear-gradient(135deg, var(--primary), #3730a3);
  border-radius: 24px;
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(79,70,229,0.35);
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 180px;
  height: 180px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}

.cta-card::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.cta-card h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-card p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 36px;
  border-radius: 50px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  color: var(--primary-dark);
}

.cta-btn i {
  font-size: 0.9rem;
}

/* ===== Footer ===== */
.site-footer {
  background: #0f172a;
  padding: 70px 0 30px;
  color: rgba(255,255,255,0.7);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), #818cf8);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
}

.footer-desc {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 350px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

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

.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-search {
    display: none;
  }
  .page-banner h1 {
    font-size: 2.2rem;
  }
  .section-title {
    font-size: 1.9rem;
  }
  .security-card {
    padding: 28px 20px;
  }
  .step-arrow {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-header .navbar-collapse {
    padding: 16px 0;
  }
  .site-header .navbar-nav {
    margin-bottom: 12px !important;
  }
  .site-header .nav-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .page-banner {
    padding: 90px 0 60px;
  }
  .page-banner h1 {
    font-size: 1.9rem;
  }
  .page-banner .banner-desc {
    font-size: 1rem;
  }
  .section-block {
    padding: 70px 0;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .section-subtitle {
    font-size: 0.95rem;
    margin-bottom: 36px;
  }
  .checklist-wrap {
    padding: 24px;
  }
  .cta-card {
    padding: 42px 24px;
  }
  .cta-card h2 {
    font-size: 1.6rem;
  }
  .stat-number {
    font-size: 2rem;
  }
  .nav-actions .nav-login-btn,
  .nav-actions .nav-cta-btn {
    padding: 7px 14px;
    font-size: 0.85rem;
  }
}

@media (max-width: 520px) {
  .page-banner h1 {
    font-size: 1.6rem;
  }
  .page-banner .banner-desc {
    font-size: 0.92rem;
  }
  .banner-badge {
    font-size: 0.78rem;
    padding: 6px 16px;
  }
  .section-title {
    font-size: 1.4rem;
  }
  .section-label {
    font-size: 0.78rem;
    padding: 5px 14px;
  }
  .security-card {
    padding: 24px 18px;
  }
  .checklist-item {
    flex-direction: row;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .cta-btn {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: category3 */
:root {
            --primary: #0b1f33;
            --primary-light: #163a5c;
            --primary-lighter: #245e8f;
            --accent: #00c896;
            --accent-dark: #00a87e;
            --accent-soft: #e4f9f1;
            --orange: #ff6b35;
            --bg: #f5f7fb;
            --bg-deep: #081526;
            --white: #ffffff;
            --text: #1b2635;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 6px 24px rgba(11, 31, 51, .08);
            --shadow-lg: 0 14px 44px rgba(11, 31, 51, .14);
            --transition: .35s ease;
            --header-h: 76px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Heiti SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1240px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 .5rem;
        }
        p {
            margin: 0 0 1rem;
        }
        .section {
            padding: 88px 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }
        .section-head .section-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-dark);
            font-size: .8rem;
            font-weight: 600;
            padding: .3rem 1rem;
            border-radius: 40px;
            letter-spacing: .5px;
            margin-bottom: 1rem;
        }
        .section-head h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            color: var(--primary);
            margin-bottom: .6rem;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 14px rgba(11, 31, 51, .04);
        }
        .site-header .navbar {
            min-height: var(--header-h);
            padding: .4rem 0;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: .3px;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #0fb8c5);
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(0, 200, 150, .35);
            transition: var(--transition);
        }
        .brand-logo:hover .logo-icon {
            transform: rotate(-8deg) scale(1.04);
        }
        .navbar-nav {
            gap: .1rem;
        }
        .nav-item .nav-link {
            position: relative;
            font-weight: 600;
            color: var(--text);
            font-size: .95rem;
            padding: .55rem 1.05rem !important;
            border-radius: 10px;
            transition: var(--transition);
        }
        .nav-item .nav-link:hover {
            color: var(--accent-dark);
            background: var(--accent-soft);
        }
        .nav-item .nav-link.active {
            color: var(--accent-dark);
            background: var(--accent-soft);
            font-weight: 700;
        }
        .nav-item .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: .6rem;
            margin-left: .8rem;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search .form-control {
            width: 190px;
            border-radius: 40px;
            border: 1px solid var(--border);
            background: var(--bg);
            font-size: .85rem;
            padding: .45rem 1rem .45rem 2.4rem;
            transition: var(--transition);
        }
        .nav-search .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 200, 150, .15);
            background: #fff;
        }
        .nav-search .search-icon {
            position: absolute;
            left: .95rem;
            font-size: .85rem;
            color: var(--text-muted);
            pointer-events: none;
        }
        .nav-login-btn {
            display: inline-flex;
            align-items: center;
            font-size: .88rem;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--border);
            padding: .4rem 1.1rem;
            border-radius: 40px;
            background: #fff;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-login-btn:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            transform: translateY(-1px);
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            font-size: .88rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), #00b893);
            border: none;
            padding: .45rem 1.25rem;
            border-radius: 40px;
            box-shadow: 0 4px 14px rgba(0, 200, 150, .32);
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(0, 200, 150, .4);
            color: #fff;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: .3rem .6rem;
            color: var(--primary);
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 200, 150, .15);
        }
        .navbar-toggler .fa-bars {
            font-size: 1.2rem;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            min-height: 430px;
            display: flex;
            align-items: center;
            padding: 72px 0;
            color: #fff;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
            animation: heroZoom 18s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            from {
                transform: scale(1);
            }
            to {
                transform: scale(1.06);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 31, 51, .93) 0%, rgba(11, 31, 51, .72) 55%, rgba(11, 31, 51, .45) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .breadcrumbs {
            margin-bottom: 1.2rem;
        }
        .breadcrumbs .breadcrumb {
            margin: 0;
            background: rgba(255, 255, 255, .12);
            border-radius: 40px;
            padding: .4rem 1rem;
            display: inline-flex;
            backdrop-filter: blur(6px);
            font-size: .82rem;
        }
        .breadcrumbs .breadcrumb-item {
            color: rgba(255, 255, 255, .8);
        }
        .breadcrumbs .breadcrumb-item a {
            color: rgba(255, 255, 255, .75);
        }
        .breadcrumbs .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .breadcrumbs .breadcrumb-item.active {
            color: var(--accent);
            font-weight: 600;
        }
        .breadcrumbs .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, .4);
            content: "›";
        }
        .page-hero h1 {
            font-size: clamp(1.8rem, 4.4vw, 3rem);
            font-weight: 800;
            letter-spacing: .5px;
            margin-bottom: .9rem;
            line-height: 1.25;
        }
        .page-hero h1 span {
            color: var(--accent);
        }
        .hero-lead {
            font-size: clamp(.95rem, 1.6vw, 1.15rem);
            color: rgba(255, 255, 255, .85);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 1.6rem;
        }
        .hero-search {
            display: flex;
            gap: .6rem;
            max-width: 560px;
            margin-bottom: 1.4rem;
        }
        .hero-search .form-control {
            border-radius: 50px;
            border: none;
            padding: .65rem 1.3rem;
            font-size: .95rem;
            background: #fff;
            box-shadow: 0 4px 18px rgba(0, 0, 0, .15);
        }
        .hero-search .form-control:focus {
            box-shadow: 0 0 0 4px rgba(0, 200, 150, .35);
        }
        .hero-search .btn-accent {
            border-radius: 50px;
            padding: .65rem 1.6rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), #00b893);
            border: none;
            color: #fff;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(0, 200, 150, .4);
            transition: var(--transition);
        }
        .hero-search .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 200, 150, .5);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
        }
        .hero-tags .tag {
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 40px;
            padding: .35rem 1rem;
            font-size: .82rem;
            color: rgba(255, 255, 255, .9);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .hero-tags .tag:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }

        /* ===== 分类卡片 ===== */
        .cats-section {
            background: #fff;
        }
        .cat-card {
            display: block;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 4px 18px rgba(11, 31, 51, .05);
            transition: var(--transition);
            height: 100%;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 200, 150, .4);
        }
        .cat-card-img {
            position: relative;
            height: 150px;
            overflow: hidden;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.06);
        }
        .cat-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 31, 51, .45), transparent);
        }
        .cat-icon {
            position: absolute;
            bottom: 10px;
            left: 14px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #fff;
            color: var(--accent-dark);
            font-size: 1.05rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
        }
        .cat-card-body {
            padding: 1.3rem;
        }
        .cat-card-body h3 {
            font-size: 1.05rem;
            color: var(--primary);
            margin-bottom: .4rem;
            font-weight: 700;
        }
        .cat-card-body p {
            font-size: .86rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: .8rem;
        }
        .cat-more {
            font-size: .86rem;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }
        .cat-more i {
            transition: transform .3s ease;
        }
        .cat-card:hover .cat-more i {
            transform: translateX(4px);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .accordion {
            display: flex;
            flex-direction: column;
            gap: .8rem;
        }
        .accordion-item {
            background: #fff;
            border: 1px solid var(--border) !important;
            border-radius: var(--radius) !important;
            box-shadow: 0 2px 12px rgba(11, 31, 51, .04);
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-item:hover {
            border-color: rgba(0, 200, 150, .3) !important;
            box-shadow: 0 6px 20px rgba(11, 31, 51, .06);
        }
        .accordion-button {
            background: #fff;
            color: var(--text);
            font-weight: 700;
            font-size: .96rem;
            padding: 1.05rem 1.3rem;
            border: none;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            background: var(--accent-soft);
            color: var(--primary);
            font-weight: 700;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 200, 150, .15);
            border-radius: var(--radius);
        }
        .accordion-button::after {
            background-size: 1rem;
            opacity: .6;
            transition: transform .35s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(135deg);
            opacity: .85;
        }
        .accordion-body {
            padding: .3rem 1.3rem 1.3rem;
            color: var(--text-muted);
            font-size: .91rem;
            line-height: 1.85;
            border-top: 1px dashed var(--border);
        }
        .accordion-body strong {
            color: var(--primary);
        }
        .faq-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-dark);
            font-size: .72rem;
            font-weight: 700;
            padding: .2rem .7rem;
            border-radius: 30px;
            margin-right: .6rem;
            vertical-align: 2px;
        }
        .side-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.6rem;
            box-shadow: var(--shadow);
            margin-bottom: 1.2rem;
        }
        .side-card .side-title {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .95rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: .8rem;
            border-bottom: 1px solid var(--border);
        }
        .side-card .side-title i {
            color: var(--accent);
        }
        .side-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .side-link-list li {
            padding: .45rem 0;
            border-bottom: 1px dashed var(--border);
            font-size: .88rem;
        }
        .side-link-list li:last-child {
            border-bottom: none;
        }
        .side-link-list a {
            display: flex;
            align-items: center;
            gap: .4rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .side-link-list a:hover {
            color: var(--accent-dark);
            padding-left: 4px;
        }
        .side-link-list a i {
            font-size: .7rem;
            color: var(--accent);
        }
        .side-help-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius);
            padding: 1.4rem;
            color: #fff;
            text-align: center;
        }
        .side-help-box .help-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: .6rem;
        }
        .side-help-box h4 {
            font-size: 1rem;
            margin-bottom: .5rem;
            color: #fff;
        }
        .side-help-box p {
            font-size: .83rem;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 1rem;
        }
        .side-help-box .btn-help {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: var(--accent);
            color: #fff;
            border-radius: 40px;
            padding: .45rem 1.2rem;
            font-size: .85rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
            transition: var(--transition);
        }
        .side-help-box .btn-help:hover {
            transform: translateY(-2px);
            background: #00ba8a;
            color: #fff;
        }

        /* ===== 流程 ===== */
        .steps-section {
            background: #fff;
        }
        .steps-row {
            margin-top: .5rem;
        }
        .step-item {
            position: relative;
            text-align: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2.2rem 1.6rem 1.8rem;
            height: 100%;
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 200, 150, .35);
        }
        .step-num {
            position: absolute;
            top: 1rem;
            right: 1.2rem;
            font-size: 2.6rem;
            font-weight: 900;
            color: rgba(11, 31, 51, .06);
            line-height: 1;
            z-index: 0;
        }
        .step-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 66px;
            height: 66px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--accent), #00b893);
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
            box-shadow: 0 6px 18px rgba(0, 200, 150, .3);
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }
        .step-item:hover .step-icon {
            transform: scale(1.06);
        }
        .step-item h3 {
            font-size: 1.05rem;
            color: var(--primary);
            margin-bottom: .5rem;
        }
        .step-item p {
            font-size: .86rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            position: relative;
            background: var(--bg-deep);
            padding: 72px 0;
            color: #fff;
            overflow: hidden;
        }
        .stats-section::before {
            content: "";
            position: absolute;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 200, 150, .18), transparent 70%);
            top: -180px;
            right: -120px;
            pointer-events: none;
        }
        .stats-section::after {
            content: "";
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 107, 53, .12), transparent 70%);
            bottom: -140px;
            left: -80px;
            pointer-events: none;
        }
        .stats-section .container {
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem .8rem;
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .03);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, .07);
            transform: translateY(-4px);
        }
        .stat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: rgba(0, 200, 150, .18);
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        .stat-num {
            display: block;
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: .5px;
            line-height: 1.2;
        }
        .stat-num strong {
            color: var(--accent);
        }
        .stat-label {
            display: block;
            font-size: .9rem;
            color: rgba(255, 255, 255, .65);
            margin-top: .3rem;
        }

        /* ===== 用户反馈 ===== */
        .feedback-section {
            background: var(--bg);
        }
        .feedback-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.8rem;
            height: 100%;
            box-shadow: 0 4px 16px rgba(11, 31, 51, .04);
            transition: var(--transition);
        }
        .feedback-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feedback-quote {
            font-size: 1.6rem;
            color: var(--accent);
            opacity: .4;
            margin-bottom: .6rem;
        }
        .feedback-card p {
            font-size: .9rem;
            color: var(--text-muted);
            line-height: 1.8;
            flex: 1;
        }
        .feedback-user {
            display: flex;
            align-items: center;
            gap: .8rem;
            margin-top: 1.2rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border);
        }
        .feedback-user img {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid var(--accent-soft);
        }
        .feedback-user strong {
            display: block;
            font-size: .9rem;
            color: var(--primary);
        }
        .feedback-user span {
            display: block;
            font-size: .78rem;
            color: var(--text-muted);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: #fff;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 28px;
            padding: 2.6rem 3rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1.6rem;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 200, 150, .28), transparent 70%);
            right: -60px;
            bottom: -80px;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 260px;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 1.6rem;
            margin-bottom: .5rem;
        }
        .cta-content p {
            color: rgba(255, 255, 255, .72);
            font-size: .95rem;
            margin: 0;
        }
        .cta-actions {
            display: flex;
            gap: .8rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-actions .btn {
            border-radius: 50px;
            padding: .6rem 1.6rem;
            font-weight: 700;
            font-size: .9rem;
            transition: var(--transition);
        }
        .cta-actions .btn-light {
            background: #fff;
            color: var(--primary);
            border: none;
        }
        .cta-actions .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(0, 0, 0, .18);
            background: var(--accent-soft);
            color: var(--primary);
        }
        .cta-actions .btn-outline-light {
            border: 1.5px solid rgba(255, 255, 255, .6);
            color: #fff;
            background: transparent;
        }
        .cta-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, .78);
            padding: 60px 0 30px;
            font-size: .9rem;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: .8rem;
        }
        .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), #00b893);
            color: #fff;
            font-size: 1rem;
        }
        .footer-desc {
            color: rgba(255, 255, 255, .58);
            line-height: 1.8;
            margin: 0;
            font-size: .87rem;
        }
        .footer-col h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: .5rem;
        }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            color: rgba(255, 255, 255, .6);
            font-size: .87rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 3px;
        }
        .footer-links a i {
            font-size: .65rem;
            color: var(--accent);
        }
        .footer-col p {
            font-size: .87rem;
            color: rgba(255, 255, 255, .55);
            line-height: 1.8;
            margin: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 1.6rem;
            margin-top: 2.6rem;
        }
        .footer-bottom .copyright {
            margin: 0;
            font-size: .82rem;
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom .footer-tagline {
            margin: 0;
            font-size: .82rem;
            color: rgba(255, 255, 255, .45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 1rem;
                margin-top: .6rem;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
            }
            .navbar-nav {
                flex-direction: column;
                gap: .2rem;
                margin-bottom: .8rem !important;
            }
            .nav-item .nav-link {
                border-radius: 8px;
            }
            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                gap: .5rem;
                margin-left: 0;
            }
            .nav-search .form-control {
                width: 100%;
            }
            .nav-login-btn,
            .nav-cta-btn {
                justify-content: center;
            }
            .section {
                padding: 64px 0;
            }
            .cta-box {
                padding: 2rem 1.5rem;
                flex-direction: column;
                text-align: center;
            }
            .cta-content {
                min-width: auto;
            }
            .cta-actions {
                justify-content: center;
            }
        }
        @media (max-width: 767px) {
            .page-hero {
                min-height: 380px;
                padding: 56px 0;
            }
            .hero-search {
                flex-direction: column;
            }
            .hero-search .btn-accent {
                width: 100%;
            }
            .section {
                padding: 52px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .step-item {
                padding: 1.6rem 1.2rem 1.4rem;
            }
            .stats-section {
                padding: 52px 0;
            }
            .cta-box {
                padding: 1.8rem 1.2rem;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-bottom .row {
                text-align: center;
            }
            .footer-bottom .text-md-end {
                text-align: center !important;
                margin-top: .5rem;
            }
        }
        @media (max-width: 520px) {
            .brand-logo {
                font-size: .98rem;
            }
            .brand-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: .9rem;
            }
            .page-hero h1 {
                font-size: 1.55rem;
            }
            .hero-tags .tag {
                font-size: .76rem;
                padding: .25rem .8rem;
            }
            .section-head h2 {
                font-size: 1.45rem;
            }
            .accordion-button {
                font-size: .88rem;
                padding: .9rem 1rem;
            }
            .accordion-body {
                font-size: .85rem;
                padding: .3rem 1rem 1rem;
            }
            .footer-col {
                margin-bottom: 1.2rem;
            }
        }