/* roulang page: index */
:root {
            --bg-primary: #0F0F14;
            --bg-secondary: #1A1A22;
            --bg-card: #15151D;
            --bg-card-hover: #1C1C26;
            --bg-input: #12121A;
            --text-primary: #F5F4F0;
            --text-secondary: #C8C6C0;
            --text-muted: #8A8890;
            --text-dark: #1A1A22;
            --gold-primary: #D4A24E;
            --gold-light: #E0B85C;
            --gold-dark: #C8873A;
            --gold-pale: rgba(212, 162, 78, 0.25);
            --gold-glow: rgba(212, 162, 78, 0.15);
            --accent-yellow: #F2C744;
            --accent-purple: #4A3B6B;
            --accent-blue: #3A4A5A;
            --silver: #C0C4CC;
            --bronze: #CD7F32;
            --border-color: rgba(212, 162, 78, 0.3);
            --border-light: rgba(255, 255, 255, 0.08);
            --border-focus: #D4A24E;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(212, 162, 78, 0.15);
            --shadow-gold: 0 4px 20px rgba(212, 162, 78, 0.25);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
            --font-serif: 'Georgia', 'Times New Roman', 'Songti SC', serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --container-max: 1200px;
            --section-padding: 72px;
            --section-padding-mobile: 44px;
            --grid-gap: 28px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(ellipse at 20% 10%, rgba(74, 59, 107, 0.12) 0%, transparent 55%), radial-gradient(ellipse at 80% 90%, rgba(58, 74, 90, 0.1) 0%, transparent 50%);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--gold-primary);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
        }
        a:hover {
            color: var(--gold-light);
            text-decoration-color: var(--gold-light);
        }
        a:focus-visible {
            outline: 2px solid var(--border-focus);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--border-focus);
            outline-offset: 2px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        h1 { font-size: clamp(2rem, 4.5vw, 3rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
        h3 { font-size: clamp(1.1rem, 2vw, 1.25rem); }

        p { color: var(--text-secondary); }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 14px 0;
            min-height: 64px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .logo:hover {
            color: var(--gold-light);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #E0B85C, #C8873A);
            color: var(--text-dark);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-text .logo-main {
            font-size: 1.05rem;
            font-weight: 700;
        }
        .logo-text .logo-sub {
            font-size: 0.7rem;
            color: var(--text-muted);
            font-weight: 400;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            transition: color var(--transition-fast), background var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--gold-primary);
            border-radius: 2px;
            transition: width var(--transition-fast);
        }
        .main-nav a:hover {
            color: var(--text-primary);
        }
        .main-nav a:hover::after {
            width: 60%;
        }
        .main-nav a.active {
            color: var(--gold-primary);
            background: rgba(212, 162, 78, 0.1);
        }
        .main-nav a.active::after {
            width: 60%;
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-auth .btn-link {
            color: var(--text-secondary);
            padding: 8px 12px;
            font-size: 0.9rem;
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast);
        }
        .nav-auth .btn-link:hover {
            color: var(--text-primary);
        }
        .nav-auth .btn-primary {
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #E0B85C, #C8873A);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.9rem;
            transition: box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: 0 2px 10px rgba(212, 162, 78, 0.3);
        }
        .nav-auth .btn-primary:hover {
            box-shadow: 0 4px 16px rgba(212, 162, 78, 0.45);
            transform: translateY(-1px);
        }
        .nav-auth .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(212, 162, 78, 0.3);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            border: 1px solid var(--border-light);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 15, 20, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1.2rem;
            color: var(--text-secondary);
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast);
            border: 1px solid transparent;
        }
        .mobile-menu a:hover {
            background: rgba(212, 162, 78, 0.1);
            color: var(--text-primary);
            border-color: var(--border-color);
        }
        .mobile-menu a.active {
            color: var(--gold-primary);
            background: rgba(212, 162, 78, 0.15);
            border-color: var(--border-color);
        }
        .mobile-menu .btn-primary {
            margin-top: 16px;
            text-align: center;
            padding: 16px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #E0B85C, #C8873A);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: var(--section-padding) 0;
            background-image: url('/assets/images/a0960ad976bf3fcc.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 15, 20, 0.65) 0%, rgba(15, 15, 20, 0.82) 55%, rgba(15, 15, 20, 0.95) 100%);
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(212, 162, 78, 0.18) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .hero-text h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 18px;
            background: linear-gradient(135deg, #FFFFFF 30%, #E0B85C 70%, #C8873A 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.35;
        }
        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-ctions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, #E0B85C, #C8873A);
            color: var(--text-dark);
            box-shadow: 0 4px 16px rgba(212, 162, 78, 0.35);
            border: 1px solid rgba(224, 184, 92, 0.5);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 24px rgba(212, 162, 78, 0.5);
            transform: translateY(-2px);
            color: var(--text-dark);
            background: linear-gradient(135deg, #F0C86C, #D4A24E);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(212, 162, 78, 0.3);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            box-shadow: inset 0 0 0 rgba(212, 162, 78, 0);
        }
        .btn-secondary:hover {
            border-color: var(--gold-primary);
            background: rgba(212, 162, 78, 0.08);
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
            color: var(--gold-light);
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(212, 162, 78, 0.15);
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat .stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--gold-primary);
            font-family: var(--font-serif);
            letter-spacing: -0.02em;
        }
        .hero-stat .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
        }
        .hero-medal-card {
            background: rgba(21, 21, 29, 0.85);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .hero-medal-card::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -30%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(212, 162, 78, 0.2) 0%, transparent 60%);
            pointer-events: none;
            border-radius: 50%;
        }
        .medal-row {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .medal-row:last-child {
            border-bottom: none;
        }
        .medal-rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            font-family: var(--font-mono);
            flex-shrink: 0;
        }
        .medal-rank.gold { background: linear-gradient(135deg, #F2C744, #D4A24E); color: #1A1A22; }
        .medal-rank.silver { background: linear-gradient(135deg, #E8E8E8, #C0C4CC); color: #1A1A22; }
        .medal-rank.bronze { background: linear-gradient(135deg, #E0A970, #CD7F32); color: #1A1A22; }
        .medal-info {
            flex: 1;
            min-width: 0;
        }
        .medal-info .title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .medal-info .meta {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .medal-score {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--gold-primary);
            font-family: var(--font-serif);
        }
        .hero-version-bar {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
            padding: 12px 18px;
            background: rgba(21, 21, 29, 0.7);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(8px);
        }
        .hero-version-bar .version-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--gold-primary);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.8); }
        }
        .hero-version-bar span {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }
        .hero-version-bar .version-label {
            color: var(--gold-primary);
            font-weight: 600;
            font-size: 0.85rem;
        }
        .hero-version-bar .btn-subscribe {
            margin-left: auto;
            padding: 7px 16px;
            border-radius: var(--radius-sm);
            background: rgba(212, 162, 78, 0.15);
            color: var(--gold-primary);
            font-size: 0.82rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .hero-version-bar .btn-subscribe:hover {
            background: rgba(212, 162, 78, 0.25);
            border-color: var(--gold-primary);
            color: var(--gold-light);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-padding) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-secondary);
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(212, 162, 78, 0.12);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--gold-primary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2rem);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }
        .section-desc {
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 700px;
        }

        /* ========== PAIN POINTS ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--grid-gap);
        }
        .pain-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .pain-card:hover {
            border-color: var(--border-color);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .pain-card:hover::before {
            opacity: 1;
        }
        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(212, 162, 78, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--gold-primary);
            margin-bottom: 14px;
        }
        .pain-card h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== SOLUTION ========== */
        .solution-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .solution-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .solution-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 260px;
        }
        .solution-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(212, 162, 78, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }
        .solution-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 18px;
        }
        .solution-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 14px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: border-color var(--transition-fast);
        }
        .solution-item:hover {
            border-color: var(--border-color);
        }
        .solution-item .icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(212, 162, 78, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold-primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .solution-item h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 3px;
        }
        .solution-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* ========== STEPS ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--grid-gap);
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
        }
        .step-card:hover {
            border-color: var(--border-color);
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #E0B85C, #C8873A);
            color: var(--text-dark);
            font-size: 1.3rem;
            font-weight: 700;
            font-family: var(--font-serif);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(212, 162, 78, 0.35);
        }
        .step-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== RANKING ========== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .ranking-item:hover {
            border-color: var(--border-color);
            background: var(--bg-card-hover);
            transform: translateX(4px);
            box-shadow: var(--shadow-md);
        }
        .ranking-item.rank-1 {
            border-color: rgba(242, 199, 68, 0.5);
            background: linear-gradient(135deg, rgba(242, 199, 68, 0.06) 0%, var(--bg-card) 60%);
        }
        .ranking-item.rank-2 {
            border-color: rgba(192, 196, 204, 0.4);
            background: linear-gradient(135deg, rgba(192, 196, 204, 0.05) 0%, var(--bg-card) 60%);
        }
        .ranking-item.rank-3 {
            border-color: rgba(205, 127, 50, 0.45);
            background: linear-gradient(135deg, rgba(205, 127, 50, 0.06) 0%, var(--bg-card) 60%);
        }
        .rank-badge {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            font-family: var(--font-serif);
            flex-shrink: 0;
        }
        .rank-1 .rank-badge { background: linear-gradient(135deg, #F2C744, #D4A24E); color: #1A1A22; }
        .rank-2 .rank-badge { background: linear-gradient(135deg, #E8E8E8, #C0C4CC); color: #1A1A22; }
        .rank-3 .rank-badge { background: linear-gradient(135deg, #E0A970, #CD7F32); color: #1A1A22; }
        .rank-4 .rank-badge, .rank-5 .rank-badge, .rank-6 .rank-badge, .rank-7 .rank-badge, .rank-8 .rank-badge {
            background: rgba(212, 162, 78, 0.12);
            color: var(--gold-primary);
            border: 1px solid var(--border-color);
        }
        .rank-cover {
            width: 72px;
            height: 48px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .rank-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info h3 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-info .rank-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .rank-score {
            text-align: right;
            flex-shrink: 0;
        }
        .rank-score .score-val {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--gold-primary);
            font-family: var(--font-serif);
        }
        .rank-score .score-stars {
            font-size: 0.75rem;
            color: var(--accent-yellow);
            letter-spacing: 2px;
        }

        /* ========== DATA / STATS ========== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--grid-gap);
        }
        .data-card {
            background: linear-gradient(145deg, var(--bg-card) 0%, var(--bg-card-hover) 100%);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .data-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 50%;
            transform: translateX(-50%);
            width: 120%;
            height: 80px;
            background: radial-gradient(ellipse, rgba(212, 162, 78, 0.08) 0%, transparent 65%);
            pointer-events: none;
        }
        .data-card:hover {
            border-color: var(--border-color);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .data-num {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--gold-primary);
            font-family: var(--font-serif);
            letter-spacing: -0.03em;
            margin-bottom: 6px;
            line-height: 1.1;
        }
        .data-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--grid-gap);
        }
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            transition: all var(--transition-base);
            position: relative;
        }
        .testimonial-card:hover {
            border-color: var(--gold-primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(212, 162, 78, 0.2), rgba(74, 59, 107, 0.3));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold-primary);
            font-weight: 600;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .testimonial-stars {
            color: var(--accent-yellow);
            font-size: 0.85rem;
            letter-spacing: 2px;
            margin-bottom: 10px;
        }
        .testimonial-card blockquote {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            font-style: normal;
            border-left: 3px solid var(--gold-primary);
            padding-left: 14px;
        }

        /* ========== AUDIENCE ========== */
        .audience-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .audience-tag {
            padding: 10px 22px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            cursor: default;
            letter-spacing: 0.03em;
        }
        .audience-tag:hover {
            border-color: var(--gold-primary);
            color: var(--gold-primary);
            background: rgba(212, 162, 78, 0.08);
            box-shadow: var(--shadow-sm);
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--grid-gap);
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 26px 20px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .feature-card:hover {
            border-color: var(--border-color);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(224, 184, 92, 0.15), rgba(200, 135, 58, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            color: var(--gold-primary);
            font-size: 1.3rem;
            border: 1px solid var(--border-color);
        }
        .feature-card h3 {
            font-size: 1rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== NEWS ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--grid-gap);
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .news-card:hover {
            border-color: var(--border-color);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .news-card:hover .news-cover img {
            transform: scale(1.05);
        }
        .news-body {
            padding: 18px 20px;
        }
        .news-body h3 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body p {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }
        .news-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }

        /* ========== PERFORMANCE ========== */
        .perf-wrap {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--grid-gap);
        }
        .perf-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            transition: all var(--transition-base);
        }
        .perf-card:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-md);
        }
        .perf-card .perf-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .perf-card .perf-val {
            color: var(--gold-primary);
            font-size: 0.95rem;
            font-weight: 700;
        }
        .perf-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50px;
            overflow: hidden;
        }
        .perf-bar .perf-fill {
            height: 100%;
            border-radius: 50px;
            background: linear-gradient(90deg, #D4A24E, #E0B85C);
            transition: width var(--transition-slow);
        }

        /* ========== TAGS ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag {
            padding: 8px 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            font-size: 0.84rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tag-cloud .tag:hover {
            border-color: var(--gold-primary);
            color: var(--gold-primary);
            background: rgba(212, 162, 78, 0.08);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-color);
        }
        .faq-item.open {
            border-color: var(--gold-primary);
            box-shadow: var(--shadow-gold);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--gold-primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 162, 78, 0.1);
            color: var(--gold-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: var(--section-padding) 0;
            background-image: url('/assets/images/b2f4368d11fbc2af.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 20, 0.88) 0%, rgba(26, 26, 34, 0.9) 50%, rgba(15, 15, 20, 0.92) 100%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-content {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0A0E;
            border-top: 1px solid var(--border-light);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 280px;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--gold-primary);
        }
        .footer-col .footer-brand {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .pain-grid { grid-template-columns: repeat(2, 1fr); }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .hero-content { grid-template-columns: 1fr; gap: 28px; }
            .hero-visual { max-width: 500px; }
            .solution-wrap { grid-template-columns: 1fr; }
            .perf-wrap { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 44px;
                --grid-gap: 18px;
            }
            .main-nav { display: none; }
            .nav-auth { display: none; }
            .hamburger { display: flex; }
            .mobile-menu { display: none; }
            .mobile-menu.open { display: flex; }
            .hero { min-height: auto; padding: 40px 0; }
            .hero-desc { font-size: 0.95rem; }
            .pain-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
            .testimonial-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .ranking-item { flex-wrap: wrap; gap: 10px; }
            .rank-cover { width: 56px; height: 38px; }
            .rank-score { text-align: left; }
            .hero-stats { gap: 18px; }
            .cta-actions { flex-direction: column; }
            .cta-actions .btn { width: 100%; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .logo-text .logo-sub { display: none; }
            .logo { font-size: 0.95rem; }
            .data-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .hero-stats { flex-direction: column; gap: 8px; }
            .btn { padding: 11px 20px; font-size: 0.88rem; width: 100%; }
            .hero-ctions .btn { width: 100%; }
            .section-title { font-size: 1.4rem; }
            .ranking-item { padding: 12px 14px; }
            .rank-badge { width: 36px; height: 36px; font-size: 0.9rem; }
            .rank-info h3 { font-size: 0.85rem; }
        }

        @media (max-width: 380px) {
            .hero-version-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
            .hero-version-bar .btn-subscribe { margin-left: 0; }
            .audience-tag { padding: 8px 16px; font-size: 0.82rem; }
        }

/* roulang page: category1 */
:root {
  --bg-primary: #0F0F14;
  --bg-secondary: #1A1A22;
  --bg-card: #15151D;
  --bg-card-hover: #1C1C26;
  --bg-input: #12121A;
  --text-primary: #F5F4F0;
  --text-secondary: #C8C6C0;
  --text-muted: #8A8890;
  --text-dark: #1A1A22;
  --gold-primary: #D4A24E;
  --gold-light: #E0B85C;
  --gold-dark: #C8873A;
  --gold-pale: rgba(212, 162, 78, 0.25);
  --gold-glow: rgba(212, 162, 78, 0.15);
  --accent-yellow: #F2C744;
  --accent-purple: #4A3B6B;
  --accent-blue: #3A4A5A;
  --silver: #C0C4CC;
  --bronze: #CD7F32;
  --border-color: rgba(212, 162, 78, 0.3);
  --border-light: rgba(255, 255, 255, 0.08);
  --border-focus: #D4A24E;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(212, 162, 78, 0.15);
  --shadow-gold: 0 4px 20px rgba(212, 162, 78, 0.25);
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', 'Songti SC', serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  --container-max: 1200px;
  --section-padding: 64px;
  --section-padding-mobile: 40px;
  --grid-gap: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse at 18% 8%, rgba(74, 59, 107, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 82% 88%, rgba(58, 74, 90, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(212, 162, 78, 0.04) 0%, transparent 70%);
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

a:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
  border-radius: 3px;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

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

/* ========== HEADER / NAV ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 20, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  min-height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.logo:hover {
  color: var(--gold-light);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #E0B85C, #C8873A);
  color: var(--text-dark);
  font-size: 0.95rem;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.logo-text .logo-sub {
  font-size: 0.55rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.main-nav a:hover {
  color: var(--gold-light);
  background: rgba(212, 162, 78, 0.08);
}

.main-nav a.active {
  color: var(--gold-light);
  background: var(--gold-pale);
  border-bottom: 2px solid var(--gold-primary);
  border-radius: 8px 8px 0 0;
  padding-bottom: 6px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #E0B85C, #C8873A);
  color: var(--text-dark);
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #F0C86C, #D99A45);
  box-shadow: 0 6px 28px rgba(212, 162, 78, 0.35);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: transparent;
  color: var(--gold-light);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(212, 162, 78, 0.1);
  border-color: var(--gold-primary);
  color: var(--gold-light);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.82rem;
  border-radius: 8px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
  border-radius: 12px;
}

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

.hamburger:hover {
  background: rgba(212, 162, 78, 0.08);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== BREADCRUMB & CATEGORY H1 ========== */
.cat-hero {
  position: relative;
  padding: 56px 0 48px;
  background-image: linear-gradient(rgba(15, 15, 20, 0.85), rgba(15, 15, 20, 0.95)), url('/assets/images/a0960ad976bf3fcc.jpg');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-light);
  overflow: hidden;
}

.cat-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), var(--gold-light), var(--gold-primary), transparent);
  z-index: 1;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--gold-light);
}

.breadcrumb .sep {
  color: var(--gold-primary);
  font-size: 0.7rem;
}

.breadcrumb .current {
  color: var(--gold-light);
  font-weight: 500;
}

.cat-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
  max-width: 800px;
}

.cat-hero h1 .highlight {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cat-hero .cat-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  max-width: 780px;
  line-height: 1.75;
}

/* ========== FILTER TOOLBAR ========== */
.filter-section {
  padding: 24px 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 64px;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.filter-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-toolbar .filter-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-toolbar select {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 32px 8px 14px;
  font-size: 0.88rem;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23D4A24E' d='M5 6L0 0h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 130px;
}

.filter-toolbar select:hover {
  border-color: var(--gold-primary);
}

.filter-toolbar select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(212, 162, 78, 0.15);
}

.filter-chip-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  border-color: var(--border-color);
  color: var(--gold-light);
  background: rgba(212, 162, 78, 0.06);
}

.filter-chip.active {
  background: var(--gold-pale);
  border-color: var(--gold-primary);
  color: var(--gold-light);
}

.filter-result-count {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ========== MAIN CONTENT LAYOUT ========== */
.cat-main {
  padding: 40px 0 var(--section-padding);
}

.cat-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

/* ========== VIDEO CARD GRID ========== */
.video-grid-section h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.video-grid-section .section-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
}

.video-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.video-card .card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-card .card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.video-card:hover .card-thumb img {
  transform: scale(1.06);
}

.video-card .thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 15, 20, 0.85) 0%, transparent 45%);
  display: flex;
  align-items: flex-end;
  padding: 14px;
}

.video-card .quality-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(15, 15, 20, 0.8);
  backdrop-filter: blur(8px);
  color: var(--gold-light);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-color);
}

.video-card .duration-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(15, 15, 20, 0.85);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.03em;
}

.video-card .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.85);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E0B85C, #C8873A);
  color: var(--text-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  opacity: 0;
  transition: all var(--transition-base);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.video-card:hover .play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.video-card .card-body {
  padding: 16px 18px 18px;
}

.video-card .card-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.video-card .region-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(74, 59, 107, 0.35);
  color: #B8A8E0;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.video-card .rating {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent-yellow);
  font-size: 0.78rem;
  font-weight: 600;
}

.video-card .rating i {
  font-size: 0.7rem;
}

.video-card .update-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #6BBF8A;
  font-size: 0.72rem;
  font-weight: 500;
}

.video-card .update-status i {
  font-size: 0.55rem;
}

/* ========== RANKING SIDEBAR ========== */
.ranking-sidebar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  position: sticky;
  top: 140px;
}

.ranking-sidebar h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ranking-sidebar h3 i {
  color: var(--gold-primary);
  font-size: 0.95rem;
}

.ranking-sidebar .sidebar-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px;
  border-radius: 8px;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.rank-item:hover {
  background: rgba(212, 162, 78, 0.06);
  border-color: var(--border-color);
}

.rank-item .rank-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.rank-item.top1 .rank-number {
  background: linear-gradient(135deg, #F5D876, #D4A24E);
  color: var(--text-dark);
  box-shadow: 0 2px 10px rgba(212, 162, 78, 0.4);
}

.rank-item.top2 .rank-number {
  background: linear-gradient(135deg, #E8E8EE, #A8ACB8);
  color: var(--text-dark);
  box-shadow: 0 2px 10px rgba(192, 196, 204, 0.3);
}

.rank-item.top3 .rank-number {
  background: linear-gradient(135deg, #E0A878, #B8733A);
  color: #fff;
  box-shadow: 0 2px 10px rgba(205, 127, 50, 0.35);
}

.rank-item .rank-number.plain {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}

.rank-item .rank-info {
  flex: 1;
  min-width: 0;
}

.rank-item .rank-name {
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.rank-item .rank-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.rank-item .rank-meta .stars {
  color: var(--accent-yellow);
  font-size: 0.68rem;
}

.rank-item .rank-score {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--gold-light);
  flex-shrink: 0;
}

/* ========== RELATED TOPICS ========== */
.related-section {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.related-section h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.related-section .section-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.related-scroll {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-dark) transparent;
}

.related-scroll::-webkit-scrollbar {
  height: 5px;
}

.related-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.related-scroll::-webkit-scrollbar-thumb {
  background: var(--gold-dark);
  border-radius: 10px;
}

.related-card {
  flex: 0 0 240px;
  scroll-snap-align: start;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.related-card:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.related-card .related-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.related-card .related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.related-card .related-body {
  padding: 14px 16px;
}

.related-card .related-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card .related-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ========== UPDATE CALENDAR ========== */
.update-section {
  padding: var(--section-padding) 0;
}

.update-section h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.update-section .section-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.update-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.update-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: all var(--transition-base);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.update-item:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
  background: var(--bg-card-hover);
}

.update-item .update-date {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--gold-pale);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1.15;
}

.update-item .update-date .day {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-light);
  font-family: var(--font-serif);
}

.update-item .update-date .month {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.update-item .update-info h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.update-item .update-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ========== CTA / SUBSCRIBE ========== */
.cta-section {
  padding: var(--section-padding) 0;
  background: linear-gradient(135deg, rgba(74, 59, 107, 0.25) 0%, rgba(15, 15, 20, 0.95) 60%), url('/assets/images/cd129fc42e56a28a.webp');
  background-size: cover;
  background-position: center;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.cta-panel {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 40px 32px;
  background: rgba(15, 15, 20, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.cta-panel h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.cta-panel p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.cta-form {
  display: flex;
  gap: 10px;
  max-width: 440px;
  margin: 0 auto;
}

.cta-form input[type="email"], .cta-form input[type="text"] {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.cta-form input::placeholder {
  color: var(--text-muted);
}

.cta-form input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(212, 162, 78, 0.15);
  outline: none;
}

.cta-form .btn-primary {
  flex-shrink: 0;
}

/* ========== FAQ ========== */
.faq-section {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.faq-section h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.faq-section .section-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 820px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--border-color);
}

.faq-item.open {
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  text-align: left;
  width: 100%;
  transition: all var(--transition-fast);
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gold-pale);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  font-size: 0.7rem;
  transition: all var(--transition-base);
}

.faq-item.open .faq-question .faq-icon {
  background: var(--gold-primary);
  color: var(--text-dark);
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-base);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 20px 18px;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
}

/* ========== SEO TEXT ========== */
.seo-text-section {
  padding: var(--section-padding) 0;
}

.seo-text-section h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.seo-text-section p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 12px;
}

/* ========== FOOTER ========== */
.site-footer {
  background: #0A0A0E;
  border-top: 1px solid var(--border-light);
  padding-top: 48px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
}

.footer-col .footer-brand {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.footer-col p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--gold-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding: 18px 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.03em;
}

/* ========== MOBILE DRAWER ========== */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 15, 20, 0.98);
  backdrop-filter: blur(16px);
  z-index: 999;
  flex-direction: column;
  padding: 24px;
  gap: 6px;
}

.mobile-drawer.open {
  display: flex;
}

.mobile-drawer a {
  display: block;
  padding: 14px 18px;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 10px;
  transition: all var(--transition-fast);
}

.mobile-drawer a:hover {
  background: rgba(212, 162, 78, 0.08);
  color: var(--gold-light);
}

.mobile-drawer a.active {
  background: var(--gold-pale);
  color: var(--gold-light);
}

.mobile-drawer .mobile-actions {
  margin-top: 16px;
  display: flex;
  gap: 12px;
}

.mobile-drawer .mobile-actions .btn {
  flex: 1;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .cat-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .ranking-sidebar {
    position: static;
  }
  .update-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: var(--section-padding-mobile);
    --grid-gap: 16px;
  }
  .header-inner {
    padding: 10px 0;
  }
  .main-nav {
    display: none;
  }
  .nav-actions .btn {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .cat-hero {
    padding: 36px 0 32px;
  }
  .cat-hero h1 {
    font-size: 1.6rem;
  }
  .cat-hero .cat-desc {
    font-size: 0.88rem;
  }
  .filter-section {
    top: 56px;
    padding: 16px 0;
  }
  .filter-toolbar {
    gap: 8px;
  }
  .filter-toolbar select {
    min-width: auto;
    flex: 1;
    font-size: 0.78rem;
    padding: 7px 24px 7px 10px;
  }
  .filter-chip {
    font-size: 0.72rem;
    padding: 5px 10px;
  }
  .filter-result-count {
    margin-left: 0;
    width: 100%;
    text-align: right;
  }
  .video-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .video-card .card-title {
    font-size: 0.9rem;
  }
  .ranking-list {
    gap: 2px;
  }
  .rank-item {
    padding: 8px 8px;
  }
  .related-card {
    flex: 0 0 200px;
  }
  .update-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .cta-panel {
    padding: 28px 20px;
  }
  .cta-panel h2 {
    font-size: 1.3rem;
  }
  .cta-form {
    flex-direction: column;
    gap: 10px;
  }
  .cta-form .btn-primary {
    width: 100%;
  }
  .faq-question {
    padding: 14px 16px;
    font-size: 0.88rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-col p {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .cat-hero h1 {
    font-size: 1.35rem;
  }
  .breadcrumb {
    font-size: 0.72rem;
  }
  .video-card .play-btn {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }
  .video-card .card-body {
    padding: 12px 14px 14px;
  }
  .rank-item .rank-number {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }
  .rank-item .rank-name {
    font-size: 0.78rem;
  }
  .related-card {
    flex: 0 0 170px;
  }
  .cta-panel h2 {
    font-size: 1.15rem;
  }
  .cta-panel p {
    font-size: 0.85rem;
  }
  .cta-form input {
    font-size: 0.85rem;
  }
  .footer-bottom {
    font-size: 0.7rem;
  }
}