/* roulang page: index */
:root {
            --bg-primary: #0a0a1a;
            --bg-secondary: #111127;
            --bg-card: #1a1a3e;
            --bg-card-hover: #222255;
            --neon-blue: #00d4ff;
            --neon-purple: #7c3aed;
            --neon-green: #00ff88;
            --neon-pink: #ff2d95;
            --text-primary: #e8edf5;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-neon: rgba(0, 212, 255, 0.25);
            --glow-blue: 0 0 30px rgba(0, 212, 255, 0.25);
            --glow-purple: 0 0 30px rgba(124, 58, 237, 0.25);
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Inter', system-ui, -apple-system, sans-serif; background: var(--bg-primary); color: var(--text-primary); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; transition: var(--transition); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title { font-size: 2.25rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 640px; margin: 0 auto 48px; text-align: center; }
        .text-gradient { background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .text-glow { text-shadow: 0 0 40px rgba(0, 212, 255, 0.3); }
        .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem; border: none; cursor: pointer; transition: var(--transition); position: relative; overflow: hidden; }
        .btn-primary { background: linear-gradient(135deg, var(--neon-blue), #0099cc); color: #0a0a1a; box-shadow: 0 0 30px rgba(0, 212, 255, 0.3); }
        .btn-primary:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 0 50px rgba(0, 212, 255, 0.5); }
        .btn-secondary { background: transparent; color: var(--neon-blue); border: 2px solid var(--border-neon); }
        .btn-secondary:hover { background: rgba(0, 212, 255, 0.1); box-shadow: var(--glow-blue); transform: translateY(-2px); }
        .btn-glow { background: linear-gradient(135deg, var(--neon-purple), #6d28d9); color: #fff; box-shadow: 0 0 30px rgba(124, 58, 237, 0.3); }
        .btn-glow:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 0 50px rgba(124, 58, 237, 0.5); }
        .card { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-neon); padding: 32px; transition: var(--transition); backdrop-filter: blur(12px); }
        .card:hover { background: var(--bg-card-hover); transform: translateY(-4px); box-shadow: var(--glow-blue), var(--shadow-card); border-color: rgba(0, 212, 255, 0.4); }
        .badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; background: rgba(0, 212, 255, 0.12); color: var(--neon-blue); border: 1px solid rgba(0, 212, 255, 0.2); }
        .badge-purple { background: rgba(124, 58, 237, 0.12); color: var(--neon-purple); border-color: rgba(124, 58, 237, 0.2); }
        .badge-green { background: rgba(0, 255, 136, 0.12); color: var(--neon-green); border-color: rgba(0, 255, 136, 0.2); }
        .tag { display: inline-block; padding: 2px 12px; border-radius: 6px; font-size: 0.75rem; font-weight: 500; background: rgba(255, 255, 255, 0.06); color: var(--text-secondary); border: 1px solid rgba(255, 255, 255, 0.08); }
        hr { border: none; height: 1px; background: linear-gradient(90deg, transparent, var(--border-neon), transparent); margin: 40px 0; }

        /* Header / Nav */
        .site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10, 10, 26, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid rgba(0, 212, 255, 0.1); transition: var(--transition); }
        .site-header.scrolled { background: rgba(10, 10, 26, 0.95); box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5); }
        .nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .nav-logo { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.5px; background: linear-gradient(135deg, var(--neon-blue), #60a5fa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-logo i { -webkit-text-fill-color: initial; color: var(--neon-blue); margin-right: 8px; }
        .nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
        .nav-links a { padding: 8px 20px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); transition: var(--transition); position: relative; }
        .nav-links a:hover { color: var(--text-primary); background: rgba(0, 212, 255, 0.06); }
        .nav-links a.active { color: var(--neon-blue); background: rgba(0, 212, 255, 0.1); box-shadow: 0 0 20px rgba(0, 212, 255, 0.1); }
        .nav-links a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--neon-blue); border-radius: 2px; box-shadow: 0 0 10px var(--neon-blue); }
        .nav-cta { background: linear-gradient(135deg, var(--neon-blue), #0099cc); color: #0a0a1a !important; font-weight: 700 !important; padding: 10px 24px !important; border-radius: 50px !important; box-shadow: 0 0 20px rgba(0, 212, 255, 0.2); }
        .nav-cta:hover { transform: translateY(-1px); box-shadow: 0 0 40px rgba(0, 212, 255, 0.4) !important; color: #0a0a1a !important; background: linear-gradient(135deg, #00e5ff, #00b4d8) !important; }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
        .nav-toggle span { display: block; width: 26px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* Hero */
        .hero { padding: 160px 0 100px; position: relative; overflow: hidden; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; min-height: 90vh; display: flex; align-items: center; }
        .hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10, 10, 26, 0.92) 0%, rgba(10, 10, 26, 0.7) 50%, rgba(10, 10, 26, 0.88) 100%); z-index: 1; }
        .hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 120px; background: linear-gradient(transparent, var(--bg-primary)); z-index: 1; }
        .hero-content { position: relative; z-index: 2; max-width: 720px; }
        .hero h1 { font-size: 3.5rem; font-weight: 900; line-height: 1.15; margin-bottom: 20px; letter-spacing: -1px; }
        .hero p { font-size: 1.2rem; color: var(--text-secondary); margin-bottom: 40px; max-width: 560px; line-height: 1.8; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-glow { position: absolute; width: 600px; height: 600px; border-radius: 50%; filter: blur(120px); opacity: 0.15; pointer-events: none; }
        .hero-glow-1 { background: var(--neon-blue); top: -200px; right: -200px; }
        .hero-glow-2 { background: var(--neon-purple); bottom: -200px; left: -200px; }

        /* Features */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 20px; background: rgba(0, 212, 255, 0.1); color: var(--neon-blue); border: 1px solid rgba(0, 212, 255, 0.15); }
        .feature-icon.purple { background: rgba(124, 58, 237, 0.1); color: var(--neon-purple); border-color: rgba(124, 58, 237, 0.15); }
        .feature-icon.green { background: rgba(0, 255, 136, 0.1); color: var(--neon-green); border-color: rgba(0, 255, 136, 0.15); }
        .feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

        /* Category entry */
        .category-card { display: flex; align-items: center; gap: 32px; background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border-neon); padding: 40px; transition: var(--transition); }
        .category-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); box-shadow: var(--glow-blue), var(--shadow-card); }
        .category-card .cat-info { flex: 1; }
        .category-card .cat-info h3 { font-size: 1.6rem; font-weight: 700; margin-bottom: 12px; }
        .category-card .cat-info p { color: var(--text-secondary); margin-bottom: 20px; max-width: 480px; }
        .category-card .cat-image { flex: 0 0 260px; border-radius: var(--radius); overflow: hidden; }
        .category-card .cat-image img { width: 100%; height: 180px; object-fit: cover; border-radius: var(--radius); }

        /* Latest posts */
        .posts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .post-card { display: flex; flex-direction: column; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-neon); overflow: hidden; transition: var(--transition); }
        .post-card:hover { transform: translateY(-4px); box-shadow: var(--glow-blue), var(--shadow-card); border-color: rgba(0, 212, 255, 0.3); }
        .post-card .post-image { width: 100%; height: 200px; object-fit: cover; }
        .post-card .post-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .post-card .post-body h4 { font-size: 1.1rem; font-weight: 700; margin: 12px 0 8px; line-height: 1.4; }
        .post-card .post-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; flex: 1; }
        .post-card .post-meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-top: 16px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.05); }

        /* How it works */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
        .step-card { text-align: center; padding: 32px 20px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-neon); position: relative; transition: var(--transition); }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--glow-blue); }
        .step-card::before { counter-increment: step; content: "0" counter(step); position: absolute; top: 16px; left: 20px; font-size: 2.5rem; font-weight: 900; color: rgba(0, 212, 255, 0.08); line-height: 1; }
        .step-icon { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.6rem; background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(124,58,237,0.15)); color: var(--neon-blue); }
        .step-card h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .step-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

        /* FAQ */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-neon); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: rgba(0, 212, 255, 0.3); }
        .faq-question { width: 100%; padding: 20px 28px; display: flex; justify-content: space-between; align-items: center; background: none; border: none; color: var(--text-primary); font-size: 1.05rem; font-weight: 600; text-align: left; cursor: pointer; gap: 16px; }
        .faq-question i { color: var(--neon-blue); transition: var(--transition); font-size: 1rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 28px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }
        .faq-answer.open { max-height: 300px; padding: 0 28px 20px; }

        /* CTA */
        .cta-section { background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; position: relative; border-radius: var(--radius-lg); overflow: hidden; padding: 80px 60px; text-align: center; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10,10,26,0.9), rgba(10,10,26,0.7)); z-index: 1; }
        .cta-section>* { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
        .cta-section p { color: var(--text-secondary); max-width: 500px; margin: 0 auto 32px; font-size: 1.05rem; }

        /* Footer */
        .site-footer { padding: 60px 0 30px; border-top: 1px solid rgba(0, 212, 255, 0.08); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .footer-logo { font-size: 1.3rem; font-weight: 800; background: linear-gradient(135deg, var(--neon-blue), #60a5fa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 12px; display: inline-block; }
        .footer-brand p { color: var(--text-secondary); font-size: 0.9rem; max-width: 320px; line-height: 1.7; }
        .footer-col h5 { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 16px; }
        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a { color: var(--text-secondary); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul a:hover { color: var(--neon-blue); }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.05); font-size: 0.85rem; color: var(--text-muted); flex-wrap: wrap; gap: 12px; }

        /* Responsive */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 2.8rem; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: rgba(10, 10, 26, 0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px 24px; gap: 4px; border-bottom: 1px solid var(--border-neon); }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; padding: 14px 20px; }
            .nav-toggle { display: flex; }
            .hero { padding: 130px 0 70px; min-height: auto; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-actions { flex-direction: column; }
            .section { padding: 50px 0; }
            .section-title { font-size: 1.7rem; }
            .features-grid { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .category-card { flex-direction: column; padding: 24px; }
            .category-card .cat-image { flex: 0 0 auto; width: 100%; }
            .category-card .cat-image img { height: 160px; }
            .cta-section { padding: 50px 24px; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.65rem; }
            .btn { padding: 12px 24px; font-size: 0.9rem; width: 100%; justify-content: center; }
            .section-title { font-size: 1.4rem; }
            .card { padding: 20px; }
            .post-card .post-image { height: 160px; }
        }

        /* Animations */
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade { animation: fadeInUp 0.6s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
:root {
            --neon-cyan: #00f0ff;
            --neon-blue: #4d7cff;
            --neon-purple: #8b5cf6;
            --neon-pink: #ff2d95;
            --neon-green: #00ff88;
            --dark-900: #0a0a0f;
            --dark-800: #111119;
            --dark-700: #1a1a2e;
            --dark-600: #242440;
            --dark-500: #2d2d50;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-neon: 0 0 30px rgba(0, 240, 255, 0.15);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--dark-900);
            color: #e2e8f0;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--dark-800);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--dark-500);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--neon-cyan);
        }

        /* Header & Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 10, 15, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 24px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .nav-logo i {
            color: var(--neon-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.4));
        }
        .nav-logo:hover {
            color: var(--neon-cyan);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links li a.active {
            color: var(--neon-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
            border-radius: 2px;
        }
        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
            color: #0a0a0f;
            font-weight: 700;
            padding: 8px 22px;
            border-radius: 8px;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }
        .nav-links li a.nav-cta:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.4);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 10, 15, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: 8px;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-links li a.nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
        }

        /* Page Hero Banner */
        .page-hero {
            padding: 140px 0 60px;
            background: linear-gradient(135deg, var(--dark-900) 0%, var(--dark-800) 50%, rgba(26, 26, 46, 0.9) 100%);
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .page-hero h1 span {
            color: var(--neon-cyan);
        }
        .page-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-top: 8px;
        }
        .page-hero .meta .badge {
            background: rgba(0, 240, 255, 0.12);
            color: var(--neon-cyan);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }
        .page-hero .meta i {
            color: var(--neon-cyan);
            width: 18px;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 120px 0 40px;
                min-height: 200px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* Article Content */
        .article-section {
            padding: 60px 0 80px;
            background: var(--dark-900);
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-main {
            background: var(--dark-800);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .article-main .article-body {
            padding: 40px 44px;
        }
        .article-main .article-body p {
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-main .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-top: 36px;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .article-main .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--neon-cyan);
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .article-main .article-body ul,
        .article-main .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: rgba(255, 255, 255, 0.82);
        }
        .article-main .article-body li {
            margin-bottom: 8px;
        }
        .article-main .article-body a {
            color: var(--neon-cyan);
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: var(--transition);
        }
        .article-main .article-body a:hover {
            color: #fff;
        }
        .article-main .article-body blockquote {
            border-left: 4px solid var(--neon-cyan);
            background: rgba(0, 240, 255, 0.04);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
            color: rgba(255, 255, 255, 0.75);
            font-style: italic;
        }
        .article-main .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 24px 0;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }
        .article-main .article-body code {
            background: rgba(0, 240, 255, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--neon-cyan);
        }
        .article-main .article-body pre {
            background: var(--dark-700);
            border-radius: var(--radius);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 24px 0;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }
        .article-main .article-body hr {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.2), transparent);
            margin: 32px 0;
        }
        .article-image-wrap {
            width: 100%;
            height: 420px;
            overflow: hidden;
            position: relative;
        }
        .article-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .article-image-wrap .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 44px 24px;
            background: linear-gradient(transparent, rgba(10, 10, 15, 0.85));
        }
        .article-image-wrap .overlay .category-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.15);
            color: var(--neon-cyan);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(0, 240, 255, 0.2);
            backdrop-filter: blur(4px);
        }
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-main .article-body {
                padding: 28px 24px;
            }
            .article-image-wrap {
                height: 300px;
            }
            .article-image-wrap .overlay {
                padding: 24px 20px 16px;
            }
        }
        @media (max-width: 520px) {
            .article-main .article-body {
                padding: 20px 16px;
            }
            .article-main .article-body p {
                font-size: 0.95rem;
            }
            .article-image-wrap {
                height: 220px;
            }
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--dark-800);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h4 i {
            color: var(--neon-cyan);
            font-size: 1.2rem;
        }
        .sidebar-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: 8px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--neon-cyan);
        }
        .sidebar-card ul li a i {
            width: 20px;
            color: var(--neon-cyan);
            font-size: 0.85rem;
        }
        .sidebar-card .related-item {
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .sidebar-card .related-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-card .related-item a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: var(--transition);
            display: block;
            line-height: 1.5;
        }
        .sidebar-card .related-item a:hover {
            color: var(--neon-cyan);
        }
        .sidebar-card .related-item .meta-sm {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.35);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(77, 124, 255, 0.08));
            border: 1px solid rgba(0, 240, 255, 0.12);
            text-align: center;
        }
        .sidebar-cta h4 {
            justify-content: center;
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-neon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
            color: #0a0a0f;
            font-weight: 700;
            padding: 12px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
        }
        .sidebar-cta .btn-neon:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.35);
            transform: translateY(-2px);
        }

        /* Not Found */
        .not-found-wrap {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-wrap i {
            font-size: 4rem;
            color: var(--neon-cyan);
            opacity: 0.5;
            margin-bottom: 20px;
            display: block;
        }
        .not-found-wrap h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .not-found-wrap p {
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 24px;
        }
        .not-found-wrap .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            padding: 12px 28px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .not-found-wrap .btn-back:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
        }

        /* Footer */
        .site-footer {
            background: var(--dark-800);
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            padding: 60px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo i {
            color: var(--neon-cyan);
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.3));
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--neon-cyan);
        }
        .footer-bottom .flex {
            display: flex;
            gap: 16px;
        }
        @media (max-width: 1024px) {
            .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: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--neon-cyan);
        }
        .breadcrumb span {
            color: rgba(255, 255, 255, 0.3);
        }
        .breadcrumb .current {
            color: var(--neon-cyan);
        }

        /* Share */
        .share-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .share-bar span {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.85rem;
            font-weight: 500;
        }
        .share-bar a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .share-bar a:hover {
            background: rgba(0, 240, 255, 0.1);
            color: var(--neon-cyan);
            transform: translateY(-2px);
        }

        /* Article Navigation */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            flex-wrap: wrap;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            padding: 10px 16px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.03);
        }
        .article-nav a:hover {
            color: var(--neon-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        .article-nav .nav-next {
            text-align: right;
        }

        /* Tags */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 20px;
        }
        .tag-list a {
            display: inline-flex;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .tag-list a:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.2);
            color: var(--neon-cyan);
        }

/* roulang page: category1 */
:root {
            --primary: #00f0ff;
            --primary-dark: #00c8d4;
            --accent: #ff6b35;
            --accent-glow: rgba(255, 107, 53, 0.4);
            --bg-dark: #0a0e17;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --text-main: #e2e8f0;
            --text-muted: #94a3b8;
            --border-color: #1e293b;
            --border-glow: rgba(0, 240, 255, 0.15);
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 240, 255, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            letter-spacing: 0.5px;
            transition: var(--transition);
        }

        .nav-logo i {
            color: var(--primary);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.3));
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        .nav-links li a:hover {
            color: #fff;
            background: rgba(0, 240, 255, 0.06);
        }

        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: inset 0 -2px 0 var(--primary);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
            border-radius: 2px;
        }

        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, var(--accent), #e85d2c);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 15px var(--accent-glow);
            transition: var(--transition);
        }

        .nav-links li a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px var(--accent-glow);
            background: linear-gradient(135deg, #ff7a4a, #e85d2c);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle:hover span {
            background: var(--primary);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            padding: 100px 0 20px;
            background: linear-gradient(180deg, rgba(0, 240, 255, 0.04) 0%, transparent 100%);
            border-bottom: 1px solid rgba(30, 41, 59, 0.5);
        }

        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .breadcrumb-bar a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .breadcrumb-bar .sep {
            color: #475569;
        }

        .breadcrumb-bar .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== Category Banner ===== */
        .category-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0a0e17 0%, #0f1a2e 50%, #0a0e17 100%);
            overflow: hidden;
            padding: 60px 0 40px;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            filter: blur(2px);
        }

        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
        }

        .category-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .category-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #fff 30%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-banner p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }

        .category-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-banner .banner-stats .stat-item {
            text-align: center;
        }

        .category-banner .banner-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

        .category-banner .banner-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Section通用 ===== */
        .section-block {
            padding: 70px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .section-sub {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .section-title-center {
            text-align: center;
        }

        .section-sub-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Guide Cards Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 240, 255, 0.2);
            box-shadow: var(--shadow-card), 0 0 30px rgba(0, 240, 255, 0.05);
        }

        .guide-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }

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

        .guide-card .card-body {
            padding: 22px 24px 24px;
        }

        .guide-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 240, 255, 0.15);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .guide-card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
            transition: var(--transition);
        }

        .guide-card:hover .card-title {
            color: var(--primary);
        }

        .guide-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #64748b;
            border-top: 1px solid rgba(30, 41, 59, 0.6);
            padding-top: 14px;
        }

        .guide-card .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== Featured / 特色板块 ===== */
        .featured-section {
            background: linear-gradient(180deg, rgba(0, 240, 255, 0.02) 0%, transparent 100%);
        }

        .featured-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .featured-item {
            display: flex;
            gap: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 22px 24px;
            transition: var(--transition);
        }

        .featured-item:hover {
            border-color: rgba(0, 240, 255, 0.15);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }

        .featured-item .f-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(0, 240, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            transition: var(--transition);
        }

        .featured-item:hover .f-icon {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
        }

        .featured-item .f-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .featured-item .f-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Steps / 步骤流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 30px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            border-color: rgba(0, 240, 255, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.12), rgba(0, 240, 255, 0.04));
            border: 1px solid rgba(0, 240, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0 auto 16px;
            transition: var(--transition);
        }

        .step-card:hover .step-number {
            background: rgba(0, 240, 255, 0.18);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.15);
        }

        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.1);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 0.95rem;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }

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

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-question.active i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }

        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.04) 0%, rgba(255, 107, 53, 0.04) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-box {
            text-align: center;
            padding: 20px 0;
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-box p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1rem;
            line-height: 1.7;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 38px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent), #e85d2c);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            box-shadow: 0 6px 25px var(--accent-glow);
            transition: var(--transition);
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px var(--accent-glow);
            background: linear-gradient(135deg, #ff7a4a, #e85d2c);
        }

        .cta-btn i {
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .cta-btn:hover i {
            transform: translateX(4px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070b12;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .footer-brand .footer-logo i {
            color: var(--primary);
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.2));
        }

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

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: #475569;
        }

        .footer-bottom a {
            color: #64748b;
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 48px;
        }

        .pagination-wrap a,
        .pagination-wrap span {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .pagination-wrap a:hover {
            border-color: rgba(0, 240, 255, 0.2);
            color: var(--primary);
            background: rgba(0, 240, 255, 0.05);
        }

        .pagination-wrap .active-page {
            background: var(--primary);
            color: #0a0e17;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

        .pagination-wrap .dots {
            border: none;
            color: #475569;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(16px);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 24px;
                gap: 4px;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .nav-links li a.nav-cta {
                margin-top: 8px;
                justify-content: center;
            }

            .category-banner {
                min-height: 300px;
                padding: 40px 0 30px;
            }

            .category-banner h1 {
                font-size: 2rem;
            }

            .category-banner p {
                font-size: 0.95rem;
            }

            .category-banner .banner-stats {
                gap: 24px;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .guide-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .featured-list {
                grid-template-columns: 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .breadcrumb-bar {
                padding: 90px 0 14px;
                font-size: 0.8rem;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .category-banner h1 {
                font-size: 1.6rem;
            }

            .section-block {
                padding: 48px 0;
            }

            .guide-card .card-body {
                padding: 18px 18px 20px;
            }

            .guide-card .card-img {
                height: 160px;
            }

            .pagination-wrap a,
            .pagination-wrap span {
                width: 36px;
                height: 36px;
                font-size: 0.8rem;
            }
        }