/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #4A90D9;
            --color-primary-light: #6BA3E0;
            --color-primary-dark: #3A7BC8;
            --color-accent: #FF7A00;
            --color-accent-light: #FF9333;
            --color-accent-dark: #E66A00;
            --color-bg: #F5F8FC;
            --color-card: #FFFFFF;
            --color-nav: #0A0F1A;
            --color-text: #1A1A2E;
            --color-text-light: #667085;
            --color-text-white: #F0F4FF;
            --color-border: #D0D5DD;
            --color-success: #10B981;
            --radius-card: 16px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-btn: 0 4px 10px rgba(255,122,0,0.3);
            --nav-height: 60px;
            --max-width: 1280px;
            --space-section: 80px;
            --space-section-mobile: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: color 0.2s; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container-custom { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== Section Spacing ===== */
        .section-padding { padding-top: var(--space-section); padding-bottom: var(--space-section); }
        @media (max-width: 768px) { .section-padding { padding-top: var(--space-section-mobile); padding-bottom: var(--space-section-mobile); } }

        /* ===== Navigation ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: var(--color-nav);
            border-bottom: 2px solid var(--color-primary);
            box-shadow: 0 2px 8px rgba(74,144,217,0.3);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .navbar::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 1px;
            background: repeating-linear-gradient(90deg, transparent, transparent 20px, rgba(74,144,217,0.15) 20px, rgba(74,144,217,0.15) 40px);
        }
        .navbar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .navbar .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0.5px;
        }
        .navbar .logo .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }
        .navbar .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar .nav-links a {
            color: rgba(255,255,255,0.75);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all 0.25s;
            position: relative;
        }
        .navbar .nav-links a:hover,
        .navbar .nav-links a:focus {
            color: var(--color-primary-light);
            background: rgba(74,144,217,0.08);
        }
        .navbar .nav-links a.active {
            color: var(--color-primary-light);
        }
        .navbar .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-primary-light);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(74,144,217,0.5);
        }
        .navbar .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .navbar .nav-cta .btn-login {
            background: var(--color-accent);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: var(--shadow-btn);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .navbar .nav-cta .btn-login:hover {
            background: var(--color-accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(255,122,0,0.4);
        }
        .navbar .nav-cta .btn-login:active { transform: scale(0.97); }
        .navbar .nav-cta .btn-login i { font-size: 14px; }

        /* Hamburger */
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            transition: color 0.2s;
        }
        .hamburger:hover { color: var(--color-primary-light); }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            background: var(--color-nav);
            border-bottom: 2px solid var(--color-primary);
            box-shadow: 0 8px 24px rgba(0,0,0,0.4);
            padding: 16px 24px;
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            transition: all 0.3s ease;
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav a {
            display: block;
            color: rgba(255,255,255,0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: color 0.2s;
        }
        .mobile-nav a:last-child { border-bottom: none; }
        .mobile-nav a:hover,
        .mobile-nav a.active { color: var(--color-primary-light); }
        .mobile-nav .mobile-cta {
            margin-top: 12px;
            width: 100%;
            background: var(--color-accent);
            color: #fff;
            border: none;
            padding: 12px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .mobile-nav .mobile-cta:hover { background: var(--color-accent-light); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            margin-top: var(--nav-height);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,15,26,0.85) 0%, rgba(10,15,26,0.60) 70%, rgba(10,15,26,0.40) 100%);
            backdrop-filter: brightness(0.6);
        }
        .hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            animation: heroFadeIn 0.8s ease forwards;
        }
        @keyframes heroFadeIn {
            0% { opacity: 0; transform: translateY(30px); }
            100% { opacity: 1; transform: translateY(0); }
        }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(74,144,217,0.2);
            border: 1px solid rgba(74,144,217,0.3);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 13px;
            color: var(--color-primary-light);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero .hero-badge i { font-size: 14px; }
        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight { color: var(--color-accent); }
        .hero .hero-sub {
            font-size: 18px;
            color: rgba(255,255,255,0.75);
            line-height: 1.6;
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: var(--shadow-btn);
            position: relative;
            overflow: hidden;
        }
        .hero .btn-primary::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
            opacity: 0;
            transition: opacity 0.4s;
        }
        .hero .btn-primary:hover::after { opacity: 1; }
        .hero .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,122,0,0.45);
        }
        .hero .btn-primary:active { transform: scale(0.97); }
        .hero .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 13px 30px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            border: 2px solid rgba(255,255,255,0.4);
            cursor: pointer;
            transition: all 0.3s;
        }
        .hero .btn-secondary:hover {
            border-color: var(--color-primary-light);
            color: var(--color-primary-light);
            background: rgba(74,144,217,0.08);
        }
        .hero .btn-secondary:active { transform: scale(0.97); }
        .hero .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero .hero-stats .stat-item { text-align: left; }
        .hero .hero-stats .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }
        .hero .hero-stats .stat-number .accent { color: var(--color-accent); }
        .hero .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255,255,255,0.55);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero { min-height: 70vh; align-items: flex-end; padding-bottom: 40px; }
            .hero h1 { font-size: 32px; }
            .hero .hero-sub { font-size: 16px; }
            .hero .hero-actions { flex-direction: column; align-items: stretch; }
            .hero .btn-primary, .hero .btn-secondary { justify-content: center; text-align: center; }
            .hero .hero-stats { flex-wrap: wrap; gap: 20px; }
            .hero .hero-stats .stat-item { flex: 1 1 40%; }
        }
        @media (max-width: 480px) {
            .hero h1 { font-size: 26px; }
            .hero .hero-sub { font-size: 14px; }
            .hero .hero-stats .stat-number { font-size: 22px; }
        }

        /* ===== Section Titles ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .section-title h2 .highlight { color: var(--color-primary); }
        .section-title p {
            font-size: 15px;
            color: var(--color-text-light);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-title .title-line {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 4px;
            margin: 14px auto 0;
        }
        @media (max-width: 768px) {
            .section-title h2 { font-size: 26px; }
            .section-title p { font-size: 14px; }
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            gap: 24px;
        }
        .card-grid-3 { grid-template-columns: repeat(3, 1fr); }
        .card-grid-4 { grid-template-columns: repeat(4, 1fr); }
        .card-grid-2 { grid-template-columns: repeat(2, 1fr); }
        @media (max-width: 1024px) {
            .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .card-grid-3, .card-grid-4, .card-grid-2 { grid-template-columns: 1fr; }
        }

        /* ===== Card Component ===== */
        .card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-img { transform: scale(1.03); }
        .card .card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
        .card .card-category {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            background: rgba(74,144,217,0.1);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.35;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card .card-excerpt {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-light);
            border-top: 1px solid rgba(0,0,0,0.05);
            padding-top: 12px;
            margin-top: auto;
        }
        .card .card-meta .meta-left { display: flex; align-items: center; gap: 12px; }
        .card .card-meta i { font-size: 12px; margin-right: 4px; }
        .card .card-link {
            color: var(--color-primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s;
        }
        .card .card-link:hover { color: var(--color-primary-dark); }
        .card .card-link i { font-size: 12px; transition: transform 0.2s; }
        .card .card-link:hover i { transform: translateX(3px); }

        /* ===== Steps ===== */
        .step-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all 0.3s;
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .step-card .step-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, rgba(74,144,217,0.12), rgba(255,122,0,0.08));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            transition: transform 0.3s;
        }
        .step-card:hover .step-icon { transform: scale(1.08); }
        .step-card .step-num {
            position: absolute;
            top: 12px;
            right: 18px;
            font-size: 48px;
            font-weight: 900;
            color: rgba(74,144,217,0.06);
            line-height: 1;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .step-card { padding: 24px 18px; }
            .step-card .step-icon { width: 52px; height: 52px; font-size: 22px; }
        }

        /* ===== Reward Grid ===== */
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .reward-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s;
            cursor: pointer;
        }
        .reward-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .reward-item .reward-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .reward-item:hover .reward-img { transform: scale(1.05); }
        .reward-item .reward-name {
            padding: 14px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            text-align: center;
        }
        @media (max-width: 1024px) { .reward-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .reward-grid { grid-template-columns: 1fr 1fr; } }

        /* ===== Progress ===== */
        .progress-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: var(--shadow-card);
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .progress-card .progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            color: var(--color-text-light);
            margin-bottom: 10px;
        }
        .progress-card .progress-label .strong { color: var(--color-text); font-weight: 600; }
        .progress-track {
            width: 100%;
            height: 10px;
            background: #E9EDF2;
            border-radius: 50px;
            overflow: hidden;
            margin-bottom: 6px;
        }
        .progress-track .progress-fill {
            height: 100%;
            width: 35%;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 50px;
            transition: width 0.6s ease;
        }
        .progress-card .progress-percent {
            font-size: 13px;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }
        .progress-card .progress-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .progress-card .btn-progress-primary {
            background: var(--color-accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: var(--shadow-btn);
        }
        .progress-card .btn-progress-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
        }
        .progress-card .btn-progress-primary:active { transform: scale(0.97); }
        .progress-card .btn-progress-secondary {
            background: transparent;
            color: var(--color-primary);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            border: 2px solid var(--color-primary);
            cursor: pointer;
            transition: all 0.3s;
        }
        .progress-card .btn-progress-secondary:hover {
            background: rgba(74,144,217,0.06);
            border-color: var(--color-primary-light);
        }
        @media (max-width: 640px) {
            .progress-card { padding: 24px 18px; }
            .progress-card .progress-actions { flex-direction: column; }
            .progress-card .btn-progress-primary,
            .progress-card .btn-progress-secondary { width: 100%; }
        }

        /* ===== FAQ Accordion ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--color-card);
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.3s;
        }
        .faq-item:hover { box-shadow: var(--shadow-card-hover); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.2s;
        }
        .faq-question:hover { color: var(--color-primary); }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-primary);
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.75;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, var(--color-nav) 0%, #1A1A3E 100%);
            border-radius: var(--radius-card);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(74,144,217,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255,122,0,0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-banner h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(255,255,255,0.65);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--color-accent);
            color: #fff;
            padding: 16px 44px;
            border-radius: var(--radius-btn);
            font-size: 18px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: var(--shadow-btn);
            position: relative;
            z-index: 1;
        }
        .cta-banner .btn-cta:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255,122,0,0.5);
        }
        .cta-banner .btn-cta:active { transform: scale(0.97); }
        .cta-banner .cta-sub {
            font-size: 13px;
            color: rgba(255,255,255,0.4);
            margin-top: 14px;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .cta-banner { padding: 36px 20px; }
            .cta-banner h2 { font-size: 26px; }
            .cta-banner .btn-cta { width: 100%; justify-content: center; padding: 14px 24px; font-size: 16px; }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-nav);
            border-top: 2px solid var(--color-primary);
            box-shadow: 0 -2px 8px rgba(74,144,217,0.15);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .footer-brand .logo .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.5);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 14px;
            padding: 4px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover { color: var(--color-primary-light); }
        .footer-col .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255,255,255,0.5);
            font-size: 14px;
            padding: 4px 0;
        }
        .footer-col .contact-item i { width: 16px; color: var(--color-primary-light); }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .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: 16px;
            transition: all 0.3s;
        }
        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.3);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* ===== Empty State ===== */
        .empty-state {
            padding: 48px 20px;
            text-align: center;
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .empty-state .empty-icon {
            font-size: 48px;
            color: #D0D5DD;
            margin-bottom: 16px;
        }
        .empty-state p {
            font-size: 15px;
            color: var(--color-text-light);
        }

        /* ===== Responsive Nav Overrides ===== */
        @media (max-width: 768px) {
            .navbar .nav-links { display: none; }
            .navbar .nav-cta .btn-login span { display: none; }
            .navbar .nav-cta .btn-login i { margin: 0; }
            .navbar .nav-cta .btn-login { padding: 8px 12px; }
            .hamburger { display: block; }
            .mobile-nav.open { display: block; }
        }

        /* ===== Smooth Scroll Offset ===== */
        .scroll-offset { scroll-margin-top: calc(var(--nav-height) + 20px); }

        /* ===== Misc Utility ===== */
        .text-accent { color: var(--color-accent); }
        .text-primary { color: var(--color-primary); }
        .bg-soft-primary { background: rgba(74,144,217,0.06); }
        .ring-accent:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; }
        .ring-primary:focus { outline: 2px solid var(--color-primary); outline-offset: 2px; }

        /* ===== Reward More Link ===== */
        .reward-more-link {
            text-align: center;
            margin-top: 24px;
        }
        .reward-more-link a {
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s;
        }
        .reward-more-link a:hover { color: var(--color-primary-dark); }
        .reward-more-link a i { transition: transform 0.2s; }
        .reward-more-link a:hover i { transform: translateX(4px); }

/* roulang page: article */
:root {
            --primary: #4A90D9;
            --primary-light: #6BA3E0;
            --primary-dark: #357ABD;
            --accent: #FF7A00;
            --accent-light: #FF9440;
            --accent-dark: #E06E00;
            --bg-light: #F5F8FC;
            --bg-dark: #0A0F1A;
            --text-dark: #1A1A2E;
            --text-muted: #667085;
            --text-light: #FFFFFF;
            --border-color: #D0D5DD;
            --card-shadow: 0 4px 12px rgba(0,0,0,0.06);
            --card-shadow-hover: 0 8px 24px rgba(0,0,0,0.10);
            --radius-card: 16px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-dark);
            height: 60px;
            box-shadow: 0 2px 8px rgba(74,144,217,0.3);
            border-bottom: 2px solid var(--primary);
        }

        .header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-light);
            font-size: 16px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            color: rgba(255,255,255,0.75);
            font-size: 14px;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color 0.3s ease;
        }

        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary-light);
            outline: none;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-light);
            box-shadow: 0 0 8px rgba(107,163,224,0.6);
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after,
        .nav-links a:focus::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--primary-light);
        }

        .nav-links a.active::after {
            width: 100%;
            background: var(--primary-light);
            box-shadow: 0 0 8px rgba(107,163,224,0.6);
        }

        .nav-cta {
            background: var(--accent);
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            transition: background 0.3s ease, transform 0.2s ease;
            box-shadow: 0 4px 10px rgba(255,122,0,0.3);
        }

        .nav-cta:hover {
            background: var(--accent-light) !important;
            transform: translateY(-1px);
        }

        .nav-cta:active {
            transform: scale(0.97);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 36px;
            height: 36px;
            background: transparent;
            border: none;
            cursor: pointer;
            gap: 5px;
            padding: 6px;
            border-radius: 6px;
            transition: background 0.2s;
        }

        .hamburger:hover {
            background: rgba(255,255,255,0.08);
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-dark);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
                border-bottom: 2px solid var(--primary);
                box-shadow: 0 8px 24px rgba(0,0,0,0.4);
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links a {
                font-size: 16px;
                padding: 8px 0;
                width: 100%;
            }

            .nav-cta {
                text-align: center;
                width: 100%;
                padding: 10px 20px !important;
            }

            .hamburger {
                display: flex;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            margin-top: 60px;
            background: var(--bg-light);
            padding: 12px 0;
            border-bottom: 1px solid #e5e9f0;
        }

        .breadcrumb-inner {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
        }

        .breadcrumb-inner a {
            color: var(--primary);
            transition: color 0.2s;
        }

        .breadcrumb-inner a:hover {
            color: var(--primary-dark);
        }

        .breadcrumb-inner .sep {
            color: #b0b8c5;
            margin: 0 4px;
        }

        .breadcrumb-inner .current {
            color: var(--text-dark);
            font-weight: 500;
            max-width: 300px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 文章标题区 ===== */
        .article-hero {
            background: var(--bg-dark);
            background-image: linear-gradient(rgba(10,15,26,0.75), rgba(10,15,26,0.85)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 60px 0 48px;
            position: relative;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            box-shadow: 0 0 12px rgba(74,144,217,0.4);
        }

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

        .article-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
        }

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

        .article-meta .meta-item i {
            color: var(--primary-light);
        }

        .article-meta .category-tag {
            background: rgba(74,144,217,0.2);
            color: var(--primary-light);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 13px;
            border: 1px solid rgba(74,144,217,0.3);
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 40px 0 32px;
            }

            .article-hero h1 {
                font-size: 26px;
            }

            .article-meta {
                gap: 12px 16px;
                font-size: 13px;
            }
        }

        /* ===== 文章正文区 ===== */
        .article-body {
            padding: 48px 0;
            background: #fff;
        }

        .article-body .container-custom {
            max-width: 800px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: #2d3748;
        }

        .article-content p {
            margin-bottom: 1.4em;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 1.6em 0 0.6em;
            color: var(--text-dark);
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 1.4em 0 0.5em;
            color: var(--text-dark);
        }

        .article-content img {
            border-radius: 12px;
            margin: 1.5em auto;
            box-shadow: var(--card-shadow);
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 16px 20px;
            margin: 1.5em 0;
            border-radius: 0 8px 8px 0;
            color: var(--text-muted);
            font-style: italic;
        }

        .article-content ul, .article-content ol {
            padding-left: 24px;
            margin-bottom: 1.4em;
        }

        .article-content li {
            margin-bottom: 0.4em;
        }

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

        .article-content a:hover {
            color: var(--primary-dark);
        }

        .article-content .first-letter::first-letter {
            font-size: 3em;
            font-weight: 700;
            float: left;
            line-height: 1;
            margin-right: 10px;
            color: var(--primary);
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-light);
            border-radius: var(--radius-card);
        }

        .article-not-found i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-not-found h3 {
            font-size: 22px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            transition: background 0.3s ease, transform 0.2s ease;
        }

        .btn-back-home:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        @media (max-width: 768px) {
            .article-body {
                padding: 32px 0;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 18px;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-posts {
            padding: 48px 0;
            background: var(--bg-light);
        }

        .related-posts .section-title {
            text-align: center;
            margin-bottom: 36px;
        }

        .related-posts .section-title h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .related-posts .section-title p {
            font-size: 14px;
            color: var(--text-muted);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .related-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            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-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid #f0f2f5;
            font-size: 13px;
            color: var(--text-muted);
        }

        .related-card .card-footer .read-more {
            color: var(--primary);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s;
        }

        .related-card .card-footer .read-more:hover {
            color: var(--primary-dark);
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-posts .section-title h2 {
                font-size: 24px;
            }
        }

        /* ===== 返回首页 ===== */
        .back-home-section {
            padding: 32px 0;
            background: #fff;
            text-align: center;
        }

        .back-home-section .btn-back-home {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .back-home-section .btn-back-home:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            padding: 40px 0 20px;
            border-top: 2px solid var(--primary);
            box-shadow: 0 -2px 8px rgba(74,144,217,0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(255,255,255,0.06);
            border-radius: 50%;
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: background 0.3s, color 0.3s, transform 0.2s;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255,255,255,0.55);
            font-size: 14px;
            margin-bottom: 12px;
        }

        .contact-item i {
            color: var(--primary-light);
            width: 18px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: rgba(255,255,255,0.35);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer {
                padding: 32px 0 16px;
            }
        }

        /* ===== 加载动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .animate-fade-in-delay-1 {
            animation: fadeInUp 0.6s ease 0.2s forwards;
            opacity: 0;
        }

        .animate-fade-in-delay-2 {
            animation: fadeInUp 0.6s ease 0.4s forwards;
            opacity: 0;
        }

        /* ===== 通用按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
            box-shadow: 0 4px 10px rgba(255,122,0,0.3);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255,122,0,0.35);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-primary:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-light);
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            border: 2px solid rgba(255,255,255,0.6);
            cursor: pointer;
            transition: background 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }

        .btn-outline:hover {
            background: rgba(255,255,255,0.08);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.97);
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ===== 选中文本 ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #4A90D9;
            --color-primary-light: #6BA3E0;
            --color-primary-dark: #357ABD;
            --color-accent: #FF7A00;
            --color-accent-light: #FF9440;
            --color-accent-dark: #E66A00;
            --color-bg: #F5F8FC;
            --color-card: #FFFFFF;
            --color-dark: #0A0F1A;
            --color-dark-2: #131B2A;
            --color-text: #1A1A2E;
            --color-text-light: #667085;
            --color-border: #D0D5DD;
            --color-success: #10B981;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-btn: 0 4px 10px rgba(255, 122, 0, 0.3);
            --shadow-nav: 0 2px 8px rgba(74, 144, 217, 0.3);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1280px;
            --nav-height: 60px;
        }

        /* ===== 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-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航栏 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background-color: var(--color-dark);
            z-index: 1000;
            border-bottom: 2px solid var(--color-primary);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            padding: 0 24px;
        }

        .navbar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0;
        }

        .navbar .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .navbar .logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 8px;
            color: #fff;
            font-size: 18px;
        }

        .navbar .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0 24px;
        }

        .navbar .nav-links a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: color 0.3s, border-color 0.3s;
            border-bottom: 2px solid transparent;
            letter-spacing: 0.3px;
        }

        .navbar .nav-links a:hover,
        .navbar .nav-links a:focus-visible {
            color: var(--color-primary-light);
            border-bottom-color: var(--color-primary-light);
        }

        .navbar .nav-links a.active {
            color: var(--color-primary-light);
            border-bottom-color: var(--color-primary-light);
        }

        .navbar .nav-cta {
            flex-shrink: 0;
        }

        .navbar .nav-cta .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            transition: background 0.3s, transform 0.15s, box-shadow 0.3s;
            box-shadow: var(--shadow-btn);
            cursor: pointer;
            border: none;
        }

        .navbar .nav-cta .btn-primary-sm:hover {
            background: var(--color-accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(255, 122, 0, 0.4);
        }

        .navbar .nav-cta .btn-primary-sm:active {
            transform: scale(0.97);
        }

        /* 汉堡菜单按钮 (移动端) */
        .navbar .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        .navbar .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: 0.3s;
        }

        /* 移动端导航抽屉 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 15, 26, 0.97);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 24px 24px;
            gap: 20px;
            overflow-y: auto;
            backdrop-filter: blur(6px);
        }

        .mobile-nav-overlay.open {
            display: flex;
        }

        .mobile-nav-overlay a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 20px;
            font-weight: 500;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            width: 100%;
            text-align: center;
            transition: color 0.3s;
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--color-primary-light);
        }

        .mobile-nav-overlay .btn-primary-sm {
            margin-top: 16px;
            width: 100%;
            text-align: center;
            justify-content: center;
        }

        @media (max-width: 768px) {
            .navbar .nav-links {
                display: none;
            }
            .navbar .nav-cta {
                display: none;
            }
            .navbar .hamburger {
                display: flex;
            }
            .navbar .nav-cta-mobile {
                display: block;
                width: 100%;
            }
            .navbar .nav-cta-mobile .btn-primary-sm {
                width: 100%;
                justify-content: center;
            }
        }

        @media (min-width: 769px) {
            .mobile-nav-overlay {
                display: none !important;
            }
        }

        /* ===== Hero Banner ===== */
        .hero-category {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: var(--nav-height);
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 15, 26, 0.88) 0%, rgba(10, 15, 26, 0.65) 100%);
            z-index: 1;
        }

        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            padding: 60px 24px;
            max-width: 800px;
            animation: fadeInUp 0.8s ease-out;
        }

        .hero-category .hero-content h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .hero-category .hero-content h1 span {
            color: var(--color-accent);
        }

        .hero-category .hero-content p {
            font-size: 18px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-category .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-category .hero-buttons .btn-primary {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-btn);
            transition: background 0.3s, transform 0.15s, box-shadow 0.3s;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            font-size: 16px;
        }

        .hero-category .hero-buttons .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 122, 0, 0.45);
        }

        .hero-category .hero-buttons .btn-primary:active {
            transform: scale(0.97);
        }

        .hero-category .hero-buttons .btn-outline {
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: background 0.3s, border-color 0.3s, transform 0.15s;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
        }

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

        .hero-category .hero-buttons .btn-outline:active {
            transform: scale(0.97);
        }

        @media (max-width: 640px) {
            .hero-category {
                min-height: 320px;
            }
            .hero-category .hero-content h1 {
                font-size: 32px;
            }
            .hero-category .hero-content p {
                font-size: 16px;
            }
            .hero-category .hero-content {
                padding: 40px 16px;
            }
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: 80px 0;
        }

        .section-block .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-block .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .section-block .section-header p {
            font-size: 16px;
            color: var(--color-text-light);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-block .section-header .accent-line {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        @media (max-width: 640px) {
            .section-block {
                padding: 48px 0;
            }
            .section-block .section-header h2 {
                font-size: 26px;
            }
            .section-block .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            gap: 24px;
        }

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

        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 1024px) {
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .card-grid-2,
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 卡片组件 ===== */
        .card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow 0.3s, transform 0.3s;
            display: flex;
            flex-direction: column;
        }

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

        .card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            transition: transform 0.4s;
        }

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

        .card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            background: #EEF2F6;
            color: var(--color-text-light);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .card .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .card .card-body p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-light);
            margin-bottom: 12px;
        }

        .card .card-body .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.3s;
            margin-top: auto;
        }

        .card .card-body .card-link:hover {
            color: var(--color-primary-dark);
        }

        .card .card-body .card-link i {
            font-size: 12px;
            transition: transform 0.3s;
        }

        .card .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 特色图标卡片 ===== */
        .icon-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 32px 24px;
            text-align: center;
            transition: box-shadow 0.3s, transform 0.3s;
        }

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

        .icon-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(74, 144, 217, 0.12), rgba(255, 122, 0, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--color-primary);
            transition: background 0.3s;
        }

        .icon-card:hover .icon-wrap {
            background: linear-gradient(135deg, rgba(74, 144, 217, 0.2), rgba(255, 122, 0, 0.14));
        }

        .icon-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .icon-card p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        /* ===== 步骤流程 ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }

        .steps-row .step-item {
            text-align: center;
            position: relative;
        }

        .steps-row .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(74, 144, 217, 0.3);
        }

        .steps-row .step-item .step-num.accent {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            box-shadow: 0 4px 12px rgba(255, 122, 0, 0.3);
        }

        .steps-row .step-item h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .steps-row .step-item p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        /* 步骤之间的连接线 */
        .steps-row .step-item::after {
            content: '';
            position: absolute;
            top: 24px;
            right: -16px;
            width: 32px;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0.4;
        }

        .steps-row .step-item:last-child::after {
            display: none;
        }

        @media (max-width: 768px) {
            .steps-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .steps-row .step-item::after {
                display: none;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stats-grid .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .stats-grid .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .stats-grid .stat-item .stat-num {
            font-size: 36px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stats-grid .stat-item .stat-label {
            font-size: 14px;
            color: var(--color-text-light);
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid .stat-item .stat-num {
                font-size: 28px;
            }
        }

        /* ===== 用户评价 ===== */
        .review-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            transition: box-shadow 0.3s, transform 0.3s;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .review-card .review-stars {
            color: #FBBF24;
            font-size: 16px;
            letter-spacing: 2px;
        }

        .review-card .review-text {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text);
            flex: 1;
        }

        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 8px;
        }

        .review-card .review-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 16px;
        }

        .review-card .review-author .name {
            font-size: 14px;
            font-weight: 600;
        }

        .review-card .review-author .title {
            font-size: 12px;
            color: var(--color-text-light);
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow 0.3s;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

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

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: color 0.3s;
            gap: 16px;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 18px;
            color: var(--color-primary);
            transition: transform 0.3s;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-light);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(74, 144, 217, 0.08) 0%, transparent 60%),
                radial-gradient(circle at 70% 50%, rgba(255, 122, 0, 0.06) 0%, transparent 60%);
            z-index: 0;
        }

        .cta-block .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-block h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-block p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            padding: 16px 40px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-btn);
            transition: background 0.3s, transform 0.15s, box-shadow 0.3s;
            cursor: pointer;
            border: none;
        }

        .cta-block .btn-cta:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 122, 0, 0.5);
        }

        .cta-block .btn-cta:active {
            transform: scale(0.97);
        }

        @media (max-width: 640px) {
            .cta-block {
                padding: 48px 0;
            }
            .cta-block h2 {
                font-size: 28px;
            }
            .cta-block .btn-cta {
                font-size: 16px;
                padding: 14px 32px;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            border-top: 2px solid var(--color-primary);
            box-shadow: 0 -2px 8px rgba(74, 144, 217, 0.15);
        }

        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer .footer-brand .logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 8px;
            color: #fff;
        }

        .footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            transition: background 0.3s, color 0.3s, transform 0.3s;
        }

        .footer .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }

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

        .footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 6px 0;
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer .footer-col a:hover {
            color: var(--color-primary-light);
            padding-left: 4px;
        }

        .footer .footer-col .contact-item {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer .footer-col .contact-item i {
            width: 18px;
            color: var(--color-primary-light);
        }

        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.3px;
        }

        @media (max-width: 768px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 480px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 工具类 ===== */
        .text-primary {
            color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .bg-primary {
            background-color: var(--color-primary);
        }
        .bg-accent {
            background-color: var(--color-accent);
        }

        /* ===== 空态 ===== */
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .empty-state .empty-icon {
            font-size: 48px;
            color: var(--color-text-light);
            opacity: 0.4;
            margin-bottom: 16px;
        }

        .empty-state p {
            font-size: 16px;
            color: var(--color-text-light);
        }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: #EEF2F6;
            color: var(--color-text-light);
        }

        .badge-hot {
            background: rgba(255, 122, 0, 0.12);
            color: var(--color-accent-dark);
        }

        .badge-new {
            background: rgba(16, 185, 129, 0.12);
            color: #059669;
        }

        .badge-live {
            background: rgba(239, 68, 68, 0.12);
            color: #DC2626;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }

        /* ===== 赛事类型标签行 ===== */
        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .tag-row .tag-item {
            padding: 8px 20px;
            border-radius: 24px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            transition: all 0.3s;
            cursor: default;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tag-row .tag-item i {
            color: var(--color-primary);
        }

        .tag-row .tag-item:hover {
            border-color: var(--color-primary);
            background: rgba(74, 144, 217, 0.06);
            transform: translateY(-2px);
        }

        /* ===== 额外响应式 ===== */
        @media (max-width: 640px) {
            .hero-category .hero-content h1 {
                font-size: 28px;
            }
            .section-block .section-header h2 {
                font-size: 22px;
            }
            .card .card-img {
                height: 140px;
            }
        }

        /* 滚动偏移补偿固定导航 */
        .scroll-offset {
            scroll-margin-top: 80px;
        }