/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-lighter: #dbeafe;
            --primary-dark: #1e3a8a;
            --accent: #f97316;
            --accent-hover: #ea580c;
            --accent-light: #fff7ed;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-accent: 0 8px 32px rgba(249, 115, 22, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.75rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-secondary);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-title-white {
            color: var(--text-white);
        }
        .section-subtitle-white {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--primary-lighter);
        }
        .nav-list a.active {
            color: var(--primary);
            background: var(--primary-lighter);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--text-white) !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.25);
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(249, 115, 22, 0.35) !important;
        }
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-xs);
            background: var(--bg-alt);
            border: 1px solid var(--border);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
        }
        .menu-toggle:hover {
            background: var(--primary-lighter);
            color: var(--primary);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-nav-overlay.open {
            opacity: 1;
        }
        .mobile-nav-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--bg);
            z-index: 1001;
            padding: 24px 28px;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            display: flex;
            flex-direction: column;
        }
        .mobile-nav-panel.open {
            right: 0;
        }
        .mobile-nav-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 32px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav-header .logo {
            font-size: 1.2rem;
        }
        .mobile-close {
            font-size: 1.5rem;
            color: var(--text-secondary);
            padding: 8px;
            border-radius: var(--radius-xs);
            background: var(--bg-alt);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-close:hover {
            background: var(--primary-lighter);
            color: var(--primary);
        }
        .mobile-nav-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .mobile-nav-list a {
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .mobile-nav-list a i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-light);
        }
        .mobile-nav-list a:hover {
            background: var(--primary-lighter);
            color: var(--primary);
        }
        .mobile-nav-list a.active {
            background: var(--primary-lighter);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-nav-list a.active i {
            color: var(--primary);
        }
        .mobile-nav-cta {
            margin-top: 12px;
            background: var(--accent) !important;
            color: var(--text-white) !important;
            justify-content: center;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            padding: 16px !important;
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.25);
        }
        .mobile-nav-cta i {
            color: var(--text-white) !important;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 92vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
            overflow: hidden;
            padding-top: var(--header-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(30, 64, 175, 0.4) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(249, 115, 22, 0.15) 0%, transparent 60%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
            padding-top: 40px;
            padding-bottom: 60px;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content {
            max-width: 600px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 16px 6px 8px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }
        .hero-badge i {
            font-size: 0.75rem;
            color: #4ade80;
        }
        .hero-badge strong {
            color: #fff;
            font-weight: 600;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, #fbbf24, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--text-white);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(249, 115, 22, 0.4);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary-light);
        }
        .btn-outline:hover {
            background: var(--primary-lighter);
            transform: translateY(-2px);
        }
        .btn-white {
            background: var(--text-white);
            color: var(--primary);
            box-shadow: var(--shadow);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat h4 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
        }
        .hero-stat p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 2px;
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual-inner {
            position: relative;
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4/3;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-visual-inner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
        }
        .hero-visual-tag {
            position: absolute;
            top: 20px;
            left: 20px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            color: #fff;
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-visual-tag i {
            color: #4ade80;
        }
        .hero-visual-card {
            position: absolute;
            bottom: 20px;
            right: 20px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            max-width: 200px;
            color: var(--text);
        }
        .hero-visual-card h5 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .hero-visual-card p {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* ===== Features / 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: var(--primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Category / 登录指南入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
            display: block;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .category-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .category-card-body {
            padding: 24px 20px 28px;
        }
        .category-card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .category-card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-lighter);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .category-tag i {
            font-size: 0.7rem;
        }

        /* ===== Process / 使用流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg);
            padding: 20px 16px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .process-step:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .process-step .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-lighter);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 3px var(--primary-light);
            transition: var(--transition);
        }
        .process-step:hover .step-num {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 0 3px var(--primary);
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== News / 最新资讯 (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .news-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }
        .news-card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card-meta .cat {
            background: var(--primary-lighter);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 100px;
            font-weight: 500;
        }
        .news-card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            flex: 1;
        }
        .news-card-body h3 a {
            color: var(--text);
        }
        .news-card-body h3 a:hover {
            color: var(--primary);
        }
        .news-card-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .news-card-footer a {
            color: var(--primary);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card-footer a:hover {
            color: var(--accent);
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            font-size: 1.05rem;
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.5rem;
            margin-bottom: 16px;
            color: var(--text-light);
            display: block;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-actions .btn-primary {
            background: var(--accent);
            box-shadow: var(--shadow-accent);
            padding: 16px 40px;
            font-size: 1.05rem;
        }
        .cta-actions .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 12px 44px rgba(249, 115, 22, 0.45);
        }
        .cta-actions .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            padding: 16px 40px;
            font-size: 1.05rem;
        }
        .cta-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 16px;
            font-size: 1.25rem;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #93c5fd, #60a5fa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
        }
        .footer-col ul a i {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.2);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.6rem;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid::before {
                display: none;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content {
                text-align: center;
                max-width: 100%;
            }
            .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-visual {
                order: -1;
            }
            .hero-visual-inner {
                max-width: 100%;
                aspect-ratio: 16/10;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-stat h4 {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 24px 16px;
            }
            .feature-card h3 {
                font-size: 1rem;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-step {
                padding: 16px 12px 20px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-card-body {
                padding: 18px 16px 22px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer p {
                font-size: 0.9rem;
            }
            .cta-section .container {
                padding: 56px 24px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-title .highlight {
                -webkit-text-fill-color: #fbbf24;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-stats {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }
            .hero-stat {
                text-align: center;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .mobile-nav-panel {
                width: 280px;
                right: -280px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .news-card-body h3 {
                font-size: 1rem;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #0f3a8c;
            --primary-light: #3b82f6;
            --primary-bg: #eef2ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --accent-dark: #059669;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            margin-bottom: 0.5rem;
        }
        h3 {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark p {
            color: var(--text-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title .badge {
            display: inline-block;
            padding: 4px 18px;
            border-radius: 20px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 12px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .text-center {
            text-align: center;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.35);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .btn-secondary:hover {
            background: #d97706;
            border-color: #d97706;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: var(--bg-alt);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.25);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.05rem;
        }
        .btn i {
            font-size: 0.9em;
        }

        /* ===== 徽章 / 标签 ===== */
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .tag-green {
            background: #d1fae5;
            color: #065f46;
        }
        .tag-orange {
            background: #fef3c7;
            color: #92400e;
        }
        .tag-purple {
            background: #ede9fe;
            color: #5b21b6;
        }
        .badge-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-list a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            font-weight: 600;
            margin-left: 8px;
        }
        .nav-list a.nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.3);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            border-radius: 3px;
            background: var(--text);
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            position: relative;
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 86, 219, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .hero h1 {
            color: #fff;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.15rem;
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero .hero-stats .stat-item {
            text-align: center;
        }
        .hero .hero-stats .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ===== 登录方式卡片 ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
        }
        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .method-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: background var(--transition);
        }
        .method-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .method-card h3 {
            margin-bottom: 8px;
        }
        .method-card p {
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .method-card .tag {
            margin-top: 4px;
        }

        /* ===== 安全步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            transition: all var(--transition);
        }
        .step-item:hover .step-num {
            background: var(--primary);
            color: #fff;
        }
        .step-item h4 {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }
        .step-item p {
            font-size: 0.88rem;
            margin-bottom: 0;
        }
        .step-item .step-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.2rem;
            color: var(--primary-light);
            opacity: 0.5;
        }
        .steps-grid .step-item:last-child .step-arrow {
            display: none;
        }

        /* ===== 优势 / 数据 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 20px 28px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .feature-card .f-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .feature-card h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .feature-card p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        .news-card .news-img {
            height: 200px;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .news-card .news-body {
            padding: 22px 24px 26px;
        }
        .news-card .news-body .tag {
            margin-bottom: 10px;
        }
        .news-card .news-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-body p {
            font-size: 0.88rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-card .news-body .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .news-card .news-body .meta i {
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: background var(--transition);
        }
        .faq-item .faq-q:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-q i {
            transition: transform var(--transition);
            color: var(--text-light);
            font-size: 0.85rem;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 0;
        }
        .footer .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer .logo i {
            color: var(--primary-light);
        }
        .footer .logo span {
            background: linear-gradient(135deg, #fff, #cbd5e1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand p {
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a i {
            font-size: 0.6rem;
            opacity: 0.5;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom span {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.82rem;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .methods-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s ease;
                box-shadow: var(--shadow-lg);
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero .hero-stats {
                gap: 24px;
                padding-top: 28px;
            }
            .hero .hero-stats .stat-num {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .methods-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .step-item .step-arrow {
                display: none;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 52px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .hero .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .hero .btn-group .btn {
                width: 100%;
                justify-content: center;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-section .btn-group .btn {
                width: 100%;
                justify-content: center;
            }
            .method-card {
                padding: 24px 18px 24px;
            }
            .step-item {
                padding: 24px 18px 22px;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.active .faq-a {
                padding: 0 16px 16px;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 0;
            font-size: 0.85rem;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text);
            font-weight: 500;
        }
        .breadcrumb i {
            font-size: 0.6rem;
            color: var(--text-light);
            opacity: 0.6;
        }

        /* ===== 额外 ===== */
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .w-full {
            width: 100%;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #0f2b4a;
  --primary-light: #1a4470;
  --primary-dark: #091b30;
  --accent: #d4943a;
  --accent-light: #e8b86a;
  --accent-dark: #b87a2a;
  --bg: #f8f9fc;
  --bg-card: #ffffff;
  --bg-soft: #eef1f6;
  --text: #1a1a2e;
  --text-light: #5a6a7a;
  --text-white: #ffffff;
  --border: #e2e6ee;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(15,43,74,0.06);
  --shadow: 0 8px 30px rgba(15,43,74,0.10);
  --shadow-lg: 0 20px 50px rgba(15,43,74,0.14);
  --transition: 0.25s ease;
  --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-w: 1200px;
  --max-w-narrow: 820px;
  --header-h: 68px;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 24px}
.container-narrow{max-width:var(--max-w-narrow);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-title{font-size:2rem;font-weight:700;color:var(--primary);text-align:center;margin-bottom:12px}
.section-sub{font-size:1.05rem;color:var(--text-light);text-align:center;max-width:640px;margin:0 auto 48px}
/* ===== Header & Nav ===== */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--border);height:var(--header-h)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--primary)}
.logo i{font-size:1.5rem;color:var(--accent)}
.logo span{letter-spacing:0.5px}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text-light);transition:all var(--transition);position:relative}
.nav-list a:hover{color:var(--primary);background:var(--bg-soft)}
.nav-list a.active{color:var(--primary);background:var(--bg-soft);font-weight:600}
.nav-list a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--accent);border-radius:2px}
.nav-list a.nav-cta{background:var(--accent);color:var(--text-white);padding:8px 22px;border-radius:50px;font-weight:600;box-shadow:0 4px 14px rgba(212,148,58,0.30)}
.nav-list a.nav-cta:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 6px 20px rgba(212,148,58,0.35)}
.mobile-toggle{display:none;font-size:1.4rem;color:var(--primary);cursor:pointer;background:none;border:none;padding:4px}
/* ===== Article Hero ===== */
.article-hero{position:relative;padding:80px 0 60px;background:var(--primary-dark);color:var(--text-white);overflow:hidden}
.article-hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.20;pointer-events:none}
.article-hero .overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(9,27,48,0.88) 0%,rgba(15,43,74,0.72) 100%);pointer-events:none}
.article-hero .container-narrow{position:relative;z-index:2}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-bottom:20px;font-size:0.92rem}
.article-meta .badge{display:inline-block;padding:4px 16px;border-radius:50px;background:var(--accent);color:var(--text-white);font-size:0.82rem;font-weight:600;letter-spacing:0.3px}
.article-meta .date{color:rgba(255,255,255,0.7)}
.article-meta .date i{margin-right:6px}
.article-hero h1{font-size:2.4rem;font-weight:800;line-height:1.3;margin-bottom:16px;letter-spacing:-0.3px}
.article-hero .lead{font-size:1.1rem;color:rgba(255,255,255,0.8);max-width:700px;line-height:1.7}
/* ===== Article Body ===== */
.article-body{padding:60px 0 40px}
.article-content{background:var(--bg-card);border-radius:var(--radius);padding:48px 56px;box-shadow:var(--shadow);font-size:1.05rem;line-height:1.9;color:var(--text)}
.article-content h2,.article-content h3,.article-content h4{margin-top:32px;margin-bottom:16px;color:var(--primary);font-weight:700;line-height:1.4}
.article-content h2{font-size:1.6rem;border-bottom:2px solid var(--bg-soft);padding-bottom:10px}
.article-content h3{font-size:1.3rem}
.article-content p{margin-bottom:20px}
.article-content ul,.article-content ol{margin-bottom:20px;padding-left:24px}
.article-content ul li{list-style:disc;margin-bottom:6px}
.article-content ol li{list-style:decimal;margin-bottom:6px}
.article-content a{color:var(--accent-dark);text-decoration:underline;text-underline-offset:2px}
.article-content a:hover{color:var(--accent)}
.article-content blockquote{border-left:4px solid var(--accent);background:var(--bg-soft);padding:16px 24px;margin:24px 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-light);font-style:italic}
.article-content img{border-radius:var(--radius-sm);margin:24px 0;box-shadow:var(--shadow-sm)}
.article-content pre{background:var(--primary-dark);color:#e8e8e8;padding:20px 24px;border-radius:var(--radius-sm);overflow-x:auto;font-size:0.92rem;line-height:1.6;margin:24px 0}
.article-content code{font-family:'JetBrains Mono','Fira Code',monospace;background:var(--bg-soft);padding:2px 8px;border-radius:4px;font-size:0.9em}
.article-content pre code{background:transparent;padding:0;border-radius:0;font-size:0.9rem}
/* ===== Article Footer ===== */
.article-footer{margin-top:40px;padding-top:24px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-block;padding:4px 14px;border-radius:50px;background:var(--bg-soft);color:var(--text-light);font-size:0.82rem;font-weight:500;transition:all var(--transition)}
.tag:hover{background:var(--primary-light);color:var(--text-white)}
.article-share{display:flex;align-items:center;gap:10px;font-size:0.9rem;color:var(--text-light)}
.article-share a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-soft);color:var(--text-light);transition:all var(--transition);font-size:1rem}
.article-share a:hover{background:var(--accent);color:var(--text-white)}
/* ===== Not Found ===== */
.not-found{text-align:center;padding:80px 24px}
.not-found i{font-size:4rem;color:var(--text-light);margin-bottom:20px;opacity:0.5}
.not-found h2{font-size:1.8rem;color:var(--primary);margin-bottom:12px}
.not-found p{color:var(--text-light);margin-bottom:24px;font-size:1.05rem}
.not-found .btn{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;border-radius:50px;background:var(--accent);color:var(--text-white);font-weight:600;font-size:1rem;transition:all var(--transition)}
.not-found .btn:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(212,148,58,0.30)}
/* ===== Related Posts ===== */
.related-section{background:var(--bg);padding:60px 0 80px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.related-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition);display:flex;flex-direction:column}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.related-card .card-img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.related-card .card-body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.related-card .card-body .badge{display:inline-block;align-self:flex-start;padding:2px 12px;border-radius:50px;background:var(--bg-soft);color:var(--text-light);font-size:0.75rem;font-weight:600;margin-bottom:10px}
.related-card .card-body h3{font-size:1.05rem;font-weight:700;color:var(--primary);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .card-body p{font-size:0.92rem;color:var(--text-light);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;flex:1}
.related-card .card-body .meta{font-size:0.8rem;color:var(--text-light)}
.related-card .card-body .meta i{margin-right:4px}
/* ===== CTA Section ===== */
.cta-section{background:var(--primary);padding:64px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.08;pointer-events:none}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:2rem;font-weight:700;color:var(--text-white);margin-bottom:12px}
.cta-section p{color:rgba(255,255,255,0.75);max-width:560px;margin:0 auto 28px;font-size:1.05rem}
.cta-section .btn-group{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.cta-section .btn-primary{display:inline-flex;align-items:center;gap:10px;padding:14px 38px;border-radius:50px;background:var(--accent);color:var(--text-white);font-weight:700;font-size:1.05rem;transition:all var(--transition);box-shadow:0 6px 24px rgba(212,148,58,0.35)}
.cta-section .btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 10px 32px rgba(212,148,58,0.40)}
.cta-section .btn-outline{display:inline-flex;align-items:center;gap:10px;padding:14px 34px;border-radius:50px;background:transparent;color:var(--text-white);font-weight:600;font-size:1.05rem;border:2px solid rgba(255,255,255,0.3);transition:all var(--transition)}
.cta-section .btn-outline:hover{background:rgba(255,255,255,0.10);border-color:var(--accent);color:var(--accent-light)}
/* ===== Footer ===== */
.footer{background:var(--primary-dark);color:rgba(255,255,255,0.7);padding:56px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{color:var(--text-white);margin-bottom:16px}
.footer-brand .logo i{color:var(--accent)}
.footer-brand p{font-size:0.92rem;line-height:1.7;max-width:340px}
.footer-col h4{color:var(--text-white);font-size:1rem;font-weight:600;margin-bottom:16px;letter-spacing:0.3px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:rgba(255,255,255,0.6);font-size:0.9rem;transition:all var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-col ul li a i{font-size:0.6rem;color:var(--accent);transition:all var(--transition)}
.footer-col ul li a:hover{color:var(--accent-light);padding-left:4px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid rgba(255,255,255,0.08);font-size:0.85rem;color:rgba(255,255,255,0.4)}
.footer-social{display:flex;gap:12px}
.footer-social a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.5);transition:all var(--transition);font-size:1rem}
.footer-social a:hover{background:var(--accent);color:var(--text-white)}
/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:20px;font-size:0.88rem;color:rgba(255,255,255,0.6)}
.breadcrumb a{color:rgba(255,255,255,0.7);transition:color var(--transition)}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb .sep{margin:0 4px;opacity:0.4}
.breadcrumb .current{color:rgba(255,255,255,0.9)}
/* ===== Skeleton / Empty ===== */
.skeleton{background:var(--bg-soft);border-radius:var(--radius-sm);animation:pulse 1.5s infinite}
@keyframes pulse{0%{opacity:0.6}50%{opacity:1}100%{opacity:0.6}}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  .header .container{padding:0 16px}
  .nav-list{gap:4px}
  .nav-list a{padding:6px 14px;font-size:0.88rem}
  .nav-list a.nav-cta{padding:6px 18px;font-size:0.88rem}
  .article-hero{padding:56px 0 44px}
  .article-hero h1{font-size:1.7rem}
  .article-hero .lead{font-size:1rem}
  .article-content{padding:28px 20px}
  .article-content h2{font-size:1.3rem}
  .article-content h3{font-size:1.15rem}
  .related-grid{grid-template-columns:1fr;max-width:480px;margin-left:auto;margin-right:auto}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
  .section{padding:48px 0}
  .section-title{font-size:1.6rem}
  .cta-section h2{font-size:1.5rem}
  .cta-section .btn-group{flex-direction:column;align-items:center}
  .breadcrumb{font-size:0.82rem}
}
@media(max-width:520px){
  .mobile-toggle{display:block}
  .nav-list{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(255,255,255,0.98);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);flex-direction:column;padding:16px 20px;box-shadow:var(--shadow);border-radius:0 0 var(--radius) var(--radius);transform:translateY(-120%);opacity:0;transition:all 0.35s ease;pointer-events:none;z-index:99}
  .nav-list.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-list a{width:100%;padding:12px 16px;border-radius:var(--radius-sm);justify-content:center}
  .nav-list a.nav-cta{margin-top:8px}
  .article-hero h1{font-size:1.4rem}
  .article-content{padding:20px 16px;font-size:0.98rem}
  .article-footer{flex-direction:column;align-items:flex-start}
  .not-found i{font-size:3rem}
  .not-found h2{font-size:1.4rem}
}