/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0b0f2a;
            --primary-light: #141a3e;
            --primary-mid: #1c2555;
            --accent: #f0b830;
            --accent-light: #fad168;
            --accent-dark: #c9910e;
            --gold-gradient: linear-gradient(135deg, #f0b830 0%, #e8a020 100%);
            --text-white: #f5f5f7;
            --text-light: #c8c9d0;
            --text-muted: #8a8b99;
            --text-dark: #1a1a2e;
            --bg-card: rgba(255, 255, 255, 0.05);
            --bg-card-hover: rgba(255, 255, 255, 0.10);
            --bg-section-alt: #0d1133;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-accent: rgba(240, 184, 48, 0.3);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 56px rgba(0,0,0,0.5);
            --shadow-accent: 0 4px 24px rgba(240, 184, 48, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-top-h: 40px;
            --header-nav-h: 72px;
            --gap-sm: 12px;
            --gap-md: 24px;
            --gap-lg: 48px;
            --gap-xl: 80px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-white);
            background: var(--primary);
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover, a:focus { color: var(--accent-light); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        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: 1.25; font-weight: 700; color: var(--text-white); }
        h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { color: var(--text-light); margin-bottom: 1em; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gap-md); }
        .section { padding: var(--gap-xl) 0; }
        .section-alt { background: var(--bg-section-alt); }
        .section-tag {
            display: inline-block;
            background: var(--border-accent);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 4px 16px;
            border-radius: 100px;
            margin-bottom: var(--gap-sm);
        }
        .section-title { text-align: center; margin-bottom: var(--gap-lg); }
        .section-title h2 { margin-bottom: 8px; }
        .section-title p { max-width: 640px; margin: 0 auto; color: var(--text-muted); font-size: 1.05rem; }
        .text-accent { color: var(--accent); }

        /* ===== Header Top Bar ===== */
        .header-top {
            background: rgba(0,0,0,0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-top-h);
            display: flex;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .header-top .top-left span { margin-right: var(--gap-md); }
        .header-top .top-left i { margin-right: 6px; color: var(--accent); }
        .header-top .top-right a { color: var(--text-muted); margin-left: var(--gap-sm); transition: color var(--transition); }
        .header-top .top-right a:hover { color: var(--accent); }
        .header-top .top-right i { font-size: 0.9rem; }

        /* ===== Main Navigation ===== */
        .main-nav {
            background: rgba(11, 15, 42, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-nav-h);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: background var(--transition);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }
        .nav-logo i { color: var(--accent); font-size: 1.6rem; }
        .nav-logo span { background: var(--gold-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links { display: flex; align-items: center; gap: var(--gap-sm); }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 100px;
            color: var(--text-light);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--text-white); background: var(--bg-card); }
        .nav-links a.active {
            background: var(--gold-gradient);
            color: var(--text-dark);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--gold-gradient);
            color: var(--text-dark) !important;
            font-weight: 600;
            padding: 10px 24px !important;
            border-radius: 100px;
            box-shadow: var(--shadow-accent);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(240, 184, 48, 0.35); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
        .nav-toggle span { width: 26px; height: 2.5px; background: var(--text-white); border-radius: 4px; transition: all var(--transition); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 86vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--primary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            transform: scale(1.05);
            filter: brightness(0.45) saturate(1.2);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.0); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11,15,42,0.3) 0%, rgba(11,15,42,0.85) 70%, var(--primary) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            padding: var(--gap-md);
        }
        .hero-badge {
            display: inline-block;
            background: rgba(240, 184, 48, 0.15);
            border: 1px solid var(--border-accent);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 24px;
            border-radius: 100px;
            margin-bottom: var(--gap-md);
            letter-spacing: 0.04em;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 { margin-bottom: 16px; }
        .hero-content h1 .highlight { background: var(--gold-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-sub {
            font-size: clamp(1.05rem, 1.8vw, 1.3rem);
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto var(--gap-lg);
            line-height: 1.8;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: var(--gap-sm); justify-content: center; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--gold-gradient);
            color: var(--text-dark);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(240, 184, 48, 0.4); }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.25);
        }
        .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(240,184,48,0.08); transform: translateY(-3px); }
        .btn-sm { padding: 10px 22px; font-size: 0.88rem; }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--gap-lg);
            margin-top: var(--gap-lg);
            padding-top: var(--gap-lg);
            border-top: 1px solid var(--border-color);
        }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--accent); display: block; }
        .hero-stat .label { font-size: 0.85rem; color: var(--text-muted); }

        /* ===== Intro / About ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--gap-lg);
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s ease; }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11,15,42,0.4) 0%, transparent 60%);
        }
        .intro-text h2 { margin-bottom: var(--gap-sm); }
        .intro-text p { margin-bottom: 1.2em; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-sm); margin-top: var(--gap-md); }
        .intro-feat { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; color: var(--text-light); }
        .intro-feat i { color: var(--accent); font-size: 1.1rem; }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--gap-md);
        }
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--gap-md);
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--gold-gradient);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover { background: var(--bg-card-hover); border-color: var(--border-accent); transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .category-card:hover::before { opacity: 1; }
        .category-card .icon { font-size: 2.6rem; color: var(--accent); margin-bottom: var(--gap-sm); }
        .category-card h3 { margin-bottom: 6px; }
        .category-card p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: var(--gap-sm); }
        .category-card .tag {
            display: inline-block;
            background: var(--border-accent);
            color: var(--accent);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 100px;
            letter-spacing: 0.04em;
        }

        /* ===== Latest Posts (CMS) ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: var(--gap-md);
        }
        .post-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .post-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--border-accent); }
        .post-card .post-img {
            height: 200px;
            background: var(--primary-light);
            overflow: hidden;
            position: relative;
        }
        .post-card .post-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .post-card:hover .post-img img { transform: scale(1.05); }
        .post-card .post-cat {
            position: absolute;
            top: var(--gap-sm);
            left: var(--gap-sm);
            background: var(--gold-gradient);
            color: var(--text-dark);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 100px;
            letter-spacing: 0.04em;
        }
        .post-card .post-body { padding: var(--gap-md); }
        .post-card .post-body h3 { font-size: 1.1rem; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card .post-body h3 a { color: var(--text-white); }
        .post-card .post-body h3 a:hover { color: var(--accent); }
        .post-card .post-body p { font-size: 0.9rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card .post-meta { display: flex; justify-content: space-between; align-items: center; margin-top: var(--gap-sm); font-size: 0.8rem; color: var(--text-muted); }
        .post-card .post-meta i { margin-right: 4px; }
        .posts-empty {
            text-align: center;
            padding: var(--gap-lg);
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== Features / Advantages ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--gap-md);
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--gap-md) var(--gap-md) var(--gap-lg);
            text-align: center;
            transition: all var(--transition);
        }
        .feature-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); box-shadow: var(--shadow-sm); }
        .feature-card .f-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto var(--gap-sm);
            background: var(--gold-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--text-dark);
        }
        .feature-card h3 { margin-bottom: 6px; }
        .feature-card p { font-size: 0.9rem; color: var(--text-muted); }

        /* ===== Gallery / Cover Cards ===== */
        .cover-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--gap-md);
        }
        .cover-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            height: 320px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .cover-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .cover-card:hover img { transform: scale(1.06); }
        .cover-card .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11,15,42,0.85) 0%, transparent 60%);
            transition: background var(--transition);
        }
        .cover-card:hover .cover-overlay { background: linear-gradient(to top, rgba(11,15,42,0.9) 0%, rgba(11,15,42,0.2) 60%); }
        .cover-card .cover-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: var(--gap-md);
            z-index: 2;
        }
        .cover-card .cover-text h3 { font-size: 1.2rem; margin-bottom: 4px; }
        .cover-card .cover-text p { font-size: 0.85rem; color: var(--text-light); opacity: 0.9; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--gap-sm); }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.active { border-color: var(--border-accent); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--gap-md);
            cursor: pointer;
            font-weight: 600;
            color: var(--text-white);
            font-size: 1.02rem;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover { background: var(--bg-card-hover); }
        .faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 var(--gap-md) var(--gap-md);
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section-alt);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(240,184,48,0.06) 0%, transparent 70%);
        }
        .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { margin-bottom: var(--gap-sm); }
        .cta-content p { color: var(--text-muted); margin-bottom: var(--gap-md); }
        .cta-content .btn { margin: 0 6px; }

        /* ===== Footer ===== */
        .footer {
            background: #070a1e;
            border-top: 1px solid var(--border-color);
            padding: var(--gap-lg) 0 var(--gap-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--gap-lg);
            margin-bottom: var(--gap-lg);
        }
        .footer-brand .nav-logo { margin-bottom: var(--gap-sm); }
        .footer-brand p { font-size: 0.88rem; color: var(--text-muted); max-width: 320px; }
        .footer-col h4 { font-size: 0.95rem; margin-bottom: var(--gap-sm); color: var(--text-white); }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: var(--gap-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--gap-sm);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Mobile Nav ===== */
        @media (max-width: 820px) {
            .nav-links {
                position: fixed;
                top: calc(var(--header-top-h) + var(--header-nav-h));
                left: 0;
                right: 0;
                background: rgba(11, 15, 42, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--gap-md);
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                z-index: 999;
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-links.open { transform: translateY(0); opacity: 1; }
            .nav-links a { width: 100%; text-align: center; padding: 12px 18px; }
            .nav-toggle { display: flex; }
            .header-top .top-left span { display: none; }
            .header-top .top-left i { margin-right: 0; }
        }

        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; }
            .intro-image img { height: 260px; }
            .intro-features { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero-stats { gap: var(--gap-md); }
            .hero-stat .num { font-size: 1.5rem; }
            .section { padding: var(--gap-lg) 0; }
            .cover-card { height: 240px; }
        }

        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .hero-content h1 { font-size: 2rem; }
            .hero-sub { font-size: 1rem; }
            .header-top { font-size: 0.7rem; }
            .container { padding: 0 var(--gap-sm); }
            .posts-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .cover-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--primary); }
        ::-webkit-scrollbar-thumb { background: var(--primary-mid); border-radius: 8px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--accent-dark); }

        /* ===== Selection ===== */
        ::selection { background: var(--accent); color: var(--text-dark); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #1a2a6c;
            --clr-primary-light: #2d4a9e;
            --clr-accent: #e63946;
            --clr-accent-hover: #c1121f;
            --clr-gold: #f4a261;
            --clr-bg: #f8f9fc;
            --clr-bg-alt: #ffffff;
            --clr-bg-dark: #0d1b2a;
            --clr-text: #1d2a3a;
            --clr-text-light: #4a5a6a;
            --clr-text-muted: #7a8a9a;
            --clr-border: #e2e6ef;
            --clr-white: #ffffff;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 80px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.65;
            font-size: 16px;
            padding-top: var(--header-h);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--clr-accent);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--clr-primary);
        }
        p {
            margin-bottom: 0.75rem;
            color: var(--clr-text-light);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .main-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
            transition: var(--transition);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--clr-primary);
            letter-spacing: -0.5px;
        }
        .nav-logo i {
            color: var(--clr-accent);
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--clr-text-light);
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            border-radius: 4px;
            background: var(--clr-accent);
            transition: var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--clr-primary);
        }
        .nav-links a:hover {
            color: var(--clr-accent);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-hover));
            color: var(--clr-white) !important;
            padding: 10px 24px !important;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
            transition: var(--transition);
        }
        .nav-cta i {
            transition: transform 0.3s;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.4);
            color: var(--clr-white) !important;
        }
        .nav-cta:hover::after {
            width: 0 !important;
        }
        .nav-cta:hover i {
            transform: translateX(4px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--clr-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px 32px;
                gap: 18px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                align-items: stretch;
                text-align: center;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links a {
                font-size: 1.1rem;
                padding: 12px 0;
            }
            .nav-links a::after {
                bottom: 4px;
            }
            .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .nav-toggle {
                display: flex;
            }
        }

        /* ===== Banner / 分类英雄区 ===== */
        .cat-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, #0d1b2a 0%, #1a2a6c 60%, #2d4a9e 100%);
            overflow: hidden;
            padding: 80px 24px 60px;
            margin-top: calc(-1 * var(--header-h));
            padding-top: calc(var(--header-h) + 60px);
        }
        .cat-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .cat-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230, 57, 70, 0.15), transparent 70%);
            z-index: 1;
        }
        .cat-banner .container {
            position: relative;
            z-index: 2;
        }
        .cat-banner h1 {
            font-size: 3.4rem;
            font-weight: 900;
            color: var(--clr-white);
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .cat-banner h1 i {
            color: var(--clr-gold);
            margin-right: 12px;
        }
        .cat-banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cat-banner .badge-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .cat-banner .badge-group .badge {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--clr-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .cat-banner {
                min-height: 320px;
                padding: 80px 16px 40px;
            }
            .cat-banner h1 {
                font-size: 2.2rem;
            }
            .cat-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .cat-banner h1 {
                font-size: 1.7rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }
        .section-dark {
            background: var(--clr-bg-dark);
            color: var(--clr-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-sub {
            color: var(--clr-white);
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-sub {
            text-align: center;
            font-size: 1.1rem;
            color: var(--clr-text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-title i {
            color: var(--clr-accent);
            margin-right: 8px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-sub {
                font-size: 1rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--clr-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-img {
            aspect-ratio: 16 / 9;
            object-fit: cover;
            width: 100%;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .card-body h3 a {
            color: var(--clr-primary);
        }
        .card-body h3 a:hover {
            color: var(--clr-accent);
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--clr-text-light);
            flex: 1;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            border-top: 1px solid var(--clr-border);
            padding-top: 14px;
            margin-top: auto;
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--clr-accent);
            font-weight: 600;
            font-size: 0.75rem;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* ===== 网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3,
            .grid-2,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 特色高亮区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse>* {
            direction: ltr;
        }
        .feature-img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }
        .feature-content h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .feature-content p {
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.98rem;
            color: var(--clr-text-light);
        }
        .feature-list li i {
            color: var(--clr-accent);
            margin-top: 4px;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .feature-content h3 {
                font-size: 1.4rem;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            background: transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-hover));
            color: var(--clr-white);
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(230, 57, 70, 0.4);
            color: var(--clr-white);
        }
        .btn-outline {
            border: 2px solid var(--clr-border);
            color: var(--clr-primary);
            background: var(--clr-white);
        }
        .btn-outline:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-white {
            background: var(--clr-white);
            color: var(--clr-primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
            color: var(--clr-accent);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.85rem;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--clr-gold);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-list .tag {
            background: var(--clr-white);
            border: 1px solid var(--clr-border);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--clr-text-light);
            transition: var(--transition);
        }
        .tag-list .tag:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            background: rgba(230, 57, 70, 0.04);
            transform: translateY(-2px);
        }
        .tag-list .tag.active {
            background: var(--clr-accent);
            color: var(--clr-white);
            border-color: var(--clr-accent);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-white);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--clr-primary);
            cursor: pointer;
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            color: var(--clr-accent);
            font-size: 1.2rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--clr-text-light);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            text-align: center;
            padding: 80px 24px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, var(--clr-primary), #0d1b2a);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2.4rem;
            color: var(--clr-white);
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 56px 16px;
            }
            .cta-block h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0d1b2a;
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 0;
        }
        .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 .nav-logo {
            color: var(--clr-white);
            margin-bottom: 16px;
        }
        .footer-brand .nav-logo i {
            -webkit-text-fill-color: initial;
            color: var(--clr-gold);
        }
        .footer-brand .nav-logo span {
            -webkit-text-fill-color: initial;
            color: var(--clr-white);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--clr-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--clr-gold);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--clr-gold);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 1;
            }
        }

        /* ===== 移动端导航交互 ===== */
        @media (max-width: 768px) {
            .nav-toggle.active span:nth-child(1) {
                transform: translateY(8px) rotate(45deg);
            }
            .nav-toggle.active span:nth-child(2) {
                opacity: 0;
            }
            .nav-toggle.active span:nth-child(3) {
                transform: translateY(-8px) rotate(-45deg);
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            margin-bottom: 20px;
            padding-top: 12px;
        }
        .breadcrumb a {
            color: var(--clr-text-muted);
        }
        .breadcrumb a:hover {
            color: var(--clr-accent);
        }
        .breadcrumb i {
            font-size: 0.6rem;
            color: var(--clr-text-muted);
        }
        .breadcrumb .current {
            color: var(--clr-primary);
            font-weight: 600;
        }

        /* ===== 筛选栏 ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            padding: 16px 24px;
            background: var(--clr-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border);
            margin-bottom: 32px;
        }
        .filter-bar .filter-label {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--clr-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .filter-bar .filter-options {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-bar .filter-options .opt {
            padding: 6px 18px;
            border-radius: 50px;
            border: 1px solid var(--clr-border);
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--clr-text-light);
            background: var(--clr-bg);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-bar .filter-options .opt:hover,
        .filter-bar .filter-options .opt.active {
            background: var(--clr-accent);
            color: var(--clr-white);
            border-color: var(--clr-accent);
        }
        @media (max-width: 768px) {
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
            }
            .filter-bar .filter-label {
                justify-content: center;
            }
            .filter-bar .filter-options {
                justify-content: center;
            }
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .pagination-wrap .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--clr-border);
            background: var(--clr-white);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--clr-text-light);
            transition: var(--transition);
            padding: 0 14px;
        }
        .pagination-wrap .page-btn:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
        }
        .pagination-wrap .page-btn.active {
            background: var(--clr-accent);
            color: var(--clr-white);
            border-color: var(--clr-accent);
        }
        .pagination-wrap .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: article */
:root {
  --primary: #1a2a6c;
  --primary-light: #2d4a9e;
  --primary-dark: #0f1a45;
  --accent: #e8b830;
  --accent-light: #f0d060;
  --accent-dark: #c9a020;
  --bg: #f8f9fc;
  --bg-alt: #eef0f7;
  --bg-dark: #0d1329;
  --text: #1a1a2e;
  --text-light: #555577;
  --text-white: #ffffff;
  --border: #dde1ea;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

/* ===== HEADER & NAV ===== */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  font-size: 0.8rem;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.top-bar .container {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 16px;
}
.top-bar a {
  color: rgba(255,255,255,0.8);
  font-size: 0.75rem;
}
.top-bar a:hover { color: var(--accent); }
.top-bar .top-domain { color: rgba(255,255,255,0.5); font-size: 0.7rem; }
.main-nav {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}
.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-white) !important;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
}
.nav-logo i { color: var(--accent); font-size: 1.6rem; }
.nav-logo span { background: linear-gradient(135deg, #fff 60%, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-white);
  background: rgba(255,255,255,0.12);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-links a.nav-cta {
  background: var(--accent);
  color: var(--primary-dark) !important;
  font-weight: 700;
  padding: 8px 22px;
  border-radius: 50px;
  margin-left: 8px;
}
.nav-links a.nav-cta:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232,184,48,0.4);
}
.nav-links a.nav-cta i { margin-right: 6px; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 20px 24px;
    gap: 12px;
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    z-index: 999;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; }
  .nav-links a { width: 100%; text-align: center; padding: 12px; }
  .nav-links a.active::after { display: none; }
  .nav-links a.nav-cta { margin-left: 0; }
  .nav-toggle { display: flex; }
  .top-bar .container { justify-content: center; }
}

/* ===== PAGE BANNER ===== */
.page-banner {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  padding: 60px 0 50px;
  position: relative;
  overflow: hidden;
  min-height: 200px;
  display: flex;
  align-items: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.15;
  mix-blend-mode: overlay;
}
.page-banner .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.page-banner h1 {
  color: var(--text-white);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 8px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.page-banner .breadcrumb {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.page-banner .breadcrumb a {
  color: rgba(255,255,255,0.8);
}
.page-banner .breadcrumb a:hover {
  color: var(--accent);
}
.page-banner .breadcrumb span {
  color: var(--accent);
}
@media (max-width: 600px) {
  .page-banner { padding: 40px 0 30px; min-height: 160px; }
  .page-banner h1 { font-size: 1.6rem; }
}

/* ===== ARTICLE CONTENT ===== */
.article-section {
  padding: 60px 0;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}
.article-main {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
  overflow: hidden;
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-header .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: var(--text-light);
}
.article-header .article-meta .badge {
  background: var(--accent);
  color: var(--primary-dark);
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.75rem;
}
.article-header .article-meta .date i {
  margin-right: 4px;
}
.article-header h1 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary-dark);
}
.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #2d2d44;
}
.article-body p {
  margin-bottom: 1.2em;
}
.article-body h2 {
  font-size: 1.5rem;
  margin: 1.5em 0 0.6em;
  color: var(--primary);
}
.article-body h3 {
  font-size: 1.2rem;
  margin: 1.2em 0 0.5em;
  color: var(--primary-light);
}
.article-body ul, .article-body ol {
  margin: 1em 0;
  padding-left: 1.8em;
}
.article-body ul li {
  list-style: disc;
  margin-bottom: 0.4em;
}
.article-body ol li {
  list-style: decimal;
  margin-bottom: 0.4em;
}
.article-body img {
  margin: 1.5em auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.article-body blockquote {
  border-left: 4px solid var(--accent);
  padding: 16px 24px;
  margin: 1.5em 0;
  background: var(--bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-light);
}
.article-body a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-body a:hover {
  color: var(--accent-dark);
}
.article-footer-bar {
  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-footer-bar .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.article-footer-bar .tags .tag {
  background: var(--bg-alt);
  color: var(--text-light);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  transition: var(--transition);
}
.article-footer-bar .tags .tag:hover {
  background: var(--primary);
  color: #fff;
}
.article-footer-bar .share {
  display: flex;
  gap: 10px;
  align-items: center;
}
.article-footer-bar .share a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  transition: var(--transition);
  font-size: 1rem;
}
.article-footer-bar .share a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== SIDEBAR ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.sidebar-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}
.sidebar-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i {
  color: var(--accent);
}
.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sidebar-list-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.sidebar-list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.sidebar-list-item .thumb {
  width: 70px;
  height: 55px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-alt);
}
.sidebar-list-item .info {
  flex: 1;
  min-width: 0;
}
.sidebar-list-item .info a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}
.sidebar-list-item .info a:hover {
  color: var(--primary-light);
}
.sidebar-list-item .info .date {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 4px;
  display: block;
}
.sidebar-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  color: #fff;
}
.sidebar-cta h4 {
  color: #fff;
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.sidebar-cta p {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-bottom: 18px;
}
.sidebar-cta .btn-cta {
  display: inline-block;
  background: var(--accent);
  color: var(--primary-dark) !important;
  font-weight: 700;
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  transition: var(--transition);
}
.sidebar-cta .btn-cta:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,184,48,0.4);
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr 280px;
    gap: 32px;
  }
}
@media (max-width: 820px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-main { padding: 28px 20px; }
  .article-header h1 { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .article-main { padding: 20px 16px; }
  .article-header h1 { font-size: 1.3rem; }
  .article-body { font-size: 0.95rem; }
  .article-footer-bar { flex-direction: column; align-items: flex-start; }
}

/* ===== NOT FOUND ===== */
.not-found-box {
  text-align: center;
  padding: 60px 24px;
}
.not-found-box i {
  font-size: 4rem;
  color: var(--accent);
  margin-bottom: 20px;
}
.not-found-box h2 {
  font-size: 1.8rem;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.not-found-box p {
  color: var(--text-light);
  margin-bottom: 24px;
}
.not-found-box .btn-back {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 12px 32px;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
}
.not-found-box .btn-back:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .nav-logo {
  margin-bottom: 16px;
  font-size: 1.3rem;
}
.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  opacity: 0.75;
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col a i {
  width: 20px;
  margin-right: 6px;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 0.8rem;
  opacity: 0.6;
  gap: 12px;
}
.footer-bottom a {
  color: rgba(255,255,255,0.7);
}
.footer-bottom a:hover {
  color: var(--accent);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  cursor: pointer;
  z-index: 999;
  border: none;
}
.scroll-top.show {
  opacity: 1;
  visibility: visible;
}
.scroll-top:hover {
  background: var(--primary-light);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}