/* roulang page: index */
:root {
            --bg-primary: #0A0C12;
            --bg-secondary: #10141D;
            --bg-float: rgba(10, 12, 18, 0.82);
            --neon-cyan: #00E5FF;
            --neon-magenta: #FF2D95;
            --neon-purple: #7A5CFF;
            --neon-green: #00FFA3;
            --text-primary: #F2F6FC;
            --text-body: #B4BECA;
            --text-muted: #6E7A8A;
            --border-cyan: rgba(0, 229, 255, 0.18);
            --border-magenta: rgba(255, 45, 149, 0.45);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 24px rgba(0, 229, 255, 0.18);
            --shadow-magenta: 0 0 24px rgba(255, 45, 149, 0.22);
            --grad-main: linear-gradient(135deg, #00E5FF 0%, #FF2D95 100%);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-primary);
            color: var(--text-body);
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }

        a {
            color: var(--neon-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: #fff;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding: clamp(64px, 8vw, 100px) 0;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--neon-cyan);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: "";
            display: block;
            width: 32px;
            height: 2px;
            background: var(--grad-main);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(24px, 3.4vw, 36px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
            position: relative;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-float);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.12);
        }

        .site-header::after {
            content: "";
            display: block;
            height: 1px;
            background: linear-gradient(90deg, transparent, #00E5FF 20%, #FF2D95 60%, transparent);
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
        }

        .site-header .navbar {
            min-height: 64px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .site-header .navbar-brand {
            display: inline-flex;
            align-items: center;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            gap: 8px;
            letter-spacing: 0.5px;
            padding: 0;
        }

        .site-header .navbar-brand:hover {
            color: var(--text-primary);
        }

        .brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--grad-main);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
            flex-shrink: 0;
        }

        .brand-sub {
            font-size: 12px;
            font-weight: 600;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            border-radius: var(--radius-sm);
            padding: 2px 8px;
            letter-spacing: 1px;
        }

        .navbar-nav .nav-link {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            padding: 0.5rem 1.1rem;
            position: relative;
            transition: color var(--transition-fast);
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--grad-main);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
        }

        .navbar-nav .nav-link:hover::after {
            width: 60%;
        }

        .navbar-nav .nav-link.active {
            color: var(--neon-cyan);
        }

        .navbar-nav .nav-link.active::after {
            width: 60%;
        }

        .navbar-toggler {
            border: 1px solid var(--neon-cyan);
            border-radius: var(--radius-md);
            padding: 6px 10px;
            background: transparent;
            transition: border-color var(--transition-fast);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.4);
        }

        .navbar-toggler-icon {
            background-image: none !important;
            position: relative;
            width: 22px;
            height: 2px;
            background: var(--neon-cyan);
            border-radius: 2px;
            display: block;
            transition: background 0.2s;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: "";
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--neon-cyan);
            border-radius: 2px;
            transition: transform 0.3s, top 0.3s;
        }

        .navbar-toggler-icon::before {
            top: -6px;
        }

        .navbar-toggler-icon::after {
            top: 6px;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
            background: transparent;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
            top: 0;
            transform: rotate(45deg);
            background: var(--neon-magenta);
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
            top: 0;
            transform: rotate(-45deg);
            background: var(--neon-magenta);
        }

        /* 按钮 */
        .btn {
            border-radius: var(--radius-md);
            font-weight: 700;
            padding: 0.75rem 1.75rem;
            font-size: 15px;
            transition: all var(--transition-smooth);
            border: none;
            position: relative;
        }

        .btn:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.4);
        }

        .btn-neon-grad {
            background: var(--grad-main);
            color: #0A0C12;
            box-shadow: 0 4px 20px rgba(0, 229, 255, 0.2);
        }

        .btn-neon-grad:hover {
            color: #0A0C12;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.35);
        }

        .btn-neon-grad:active {
            transform: translateY(-1px) scale(0.98);
        }

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

        .btn-neon-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            color: #fff;
            border-color: var(--neon-cyan);
            transform: translateY(-2px);
        }

        .btn-neon-outline:active {
            transform: translateY(-1px);
        }

        .btn-magenta {
            background: linear-gradient(135deg, var(--neon-magenta), var(--neon-purple));
            color: #0A0C12;
        }

        .btn-magenta:hover {
            color: #0A0C12;
            transform: translateY(-2px);
            box-shadow: var(--shadow-magenta);
        }

        /* Hero */
        .hero {
            padding: 100px 0 80px;
            background-image: linear-gradient(180deg, rgba(10, 12, 18, 0.6), rgba(10, 12, 18, 0.92)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.15), transparent 70%);
            top: 10%;
            left: -200px;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 45, 149, 0.1), transparent 70%);
            bottom: 0;
            right: -100px;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--neon-cyan);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero h1 {
            font-size: clamp(32px, 4.8vw, 54px);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-primary);
            margin-bottom: 20px;
            text-shadow: 0 0 30px rgba(0, 229, 255, 0.2);
        }

        .hero-sub {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 500px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 30px;
        }

        .hero-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(0, 229, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: 28px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .hero-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--grad-main);
        }

        .hero-card-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .hero-card-item:last-child {
            border-bottom: none;
        }

        .hero-card-item i {
            font-size: 18px;
            color: var(--neon-green);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .hero-card-item strong {
            display: block;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .hero-card-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }

        .scroll-indicator {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            color: var(--neon-cyan);
            font-size: 20px;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%,
            20%,
            50%,
            80%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            40% {
                transform: translateX(-50%) translateY(-10px);
            }
            60% {
                transform: translateX(-50%) translateY(-5px);
            }
        }

        /* 指标条 */
        .stats-band {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            padding: 40px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 16px;
        }

        .stat-num {
            font-size: clamp(28px, 3vw, 42px);
            font-weight: 800;
            color: var(--neon-cyan);
            font-family: "SF Mono", "Consolas", monospace;
            line-height: 1.2;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            display: block;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
        }

        /* 优惠阶梯 */
        .tier-section {
            background: var(--bg-primary);
        }

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

        .tier-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(0, 229, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            position: relative;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

        .tier-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6), var(--shadow-neon);
            border-color: rgba(0, 229, 255, 0.35);
        }

        .tier-card:nth-child(1) {
            margin-top: 40px;
        }

        .tier-card:nth-child(2) {
            margin-top: 20px;
            border-color: rgba(255, 45, 149, 0.3);
        }

        .tier-card:nth-child(2) .tier-badge {
            background: linear-gradient(135deg, var(--neon-magenta), var(--neon-purple));
        }

        .tier-card:nth-child(3) {
            margin-top: 0;
        }

        .tier-card.tier-hot::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--grad-main);
        }

        .tier-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(0, 229, 255, 0.15);
            color: var(--text-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .tier-num {
            font-size: 48px;
            font-weight: 800;
            font-family: "SF Mono", "Consolas", monospace;
            color: transparent;
            -webkit-text-stroke: 1px rgba(0, 229, 255, 0.4);
            line-height: 1;
            margin-bottom: 16px;
            position: absolute;
            top: 24px;
            right: 22px;
            opacity: 0.2;
            font-size: 80px;
        }

        .tier-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            position: relative;
        }

        .tier-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .tier-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            padding: 6px 0;
            line-height: 1.6;
        }

        .tier-list li i {
            color: var(--neon-green);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .tier-cta {
            display: inline-block;
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--neon-cyan);
            transition: all var(--transition-fast);
        }

        .tier-cta i {
            margin-left: 4px;
            transition: transform var(--transition-fast);
        }

        .tier-cta:hover {
            color: #fff;
        }

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

        /* 套餐对比 */
        .compare-section {
            background: var(--bg-secondary);
        }

        .compare-table {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .compare-col {
            background: var(--bg-primary);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            position: relative;
            transition: all var(--transition-smooth);
        }

        .compare-col:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
        }

        .compare-col.recommended {
            border: 1px solid rgba(255, 45, 149, 0.4);
            background: linear-gradient(180deg, rgba(255, 45, 149, 0.05), var(--bg-primary));
        }

        .compare-col.recommended .compare-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--grad-main);
            color: #0A0C12;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .compare-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .compare-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--neon-cyan);
            font-family: "SF Mono", "Consolas", monospace;
            margin-bottom: 24px;
            line-height: 1.2;
        }

        .compare-price .unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            padding: 6px 0;
            line-height: 1.6;
        }

        .compare-list li i {
            color: var(--neon-green);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .compare-list li.disabled {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .compare-list li.disabled i {
            color: var(--text-muted);
        }

        .compare-cta {
            width: 100%;
        }

        /* 限时入口 */
        .timed-section {
            background-image: linear-gradient(rgba(0, 229, 255, 0.03), rgba(122, 92, 255, 0.02));
            background-color: var(--bg-primary);
            text-align: center;
            overflow: hidden;
        }

        .timed-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .timed-section::after {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08), transparent 70%);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            animation: pulse-glow 4s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes pulse-glow {
            0%,
            100% {
                opacity: 0.6;
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                opacity: 1;
                transform: translate(-50%, -50%) scale(1.1);
            }
        }

        .countdown {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin: 32px 0;
            position: relative;
            z-index: 1;
        }

        .countdown-item {
            background: var(--bg-secondary);
            border: 1px solid var(--neon-cyan);
            border-radius: var(--radius-lg);
            padding: 20px 16px;
            min-width: 80px;
            text-align: center;
            box-shadow: var(--shadow-neon);
        }

        .countdown-item span {
            display: block;
            font-family: "SF Mono", "Consolas", monospace;
            font-size: 32px;
            font-weight: 800;
            color: var(--neon-cyan);
            line-height: 1.2;
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
        }

        .countdown-item small {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }

        .countdown-sep {
            align-self: center;
            font-size: 28px;
            font-weight: 800;
            color: var(--neon-magenta);
            text-shadow: 0 0 12px rgba(255, 45, 149, 0.4);
            margin: 0;
            line-height: 1;
        }

        /* 最新资讯 */
        .news-section {
            background: var(--bg-primary);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-card {
            display: flex;
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            text-decoration: none;
            position: relative;
        }

        .news-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-neon);
            text-decoration: none;
        }

        .news-card:hover .news-more {
            color: var(--neon-cyan);
        }

        .news-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--grad-main);
            transform: scaleY(0);
            transition: transform var(--transition-smooth);
        }

        .news-card:hover::before {
            transform: scaleY(1);
        }

        .news-thumb {
            width: 200px;
            flex-shrink: 0;
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

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

        .news-tag {
            display: inline-flex;
            align-items: center;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--neon-cyan);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            width: fit-content;
            margin-bottom: 8px;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }

        .news-card:hover .news-body h3 {
            color: var(--neon-cyan);
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
        }

        .news-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-left: auto;
            transition: color var(--transition-fast);
        }

        .news-more i {
            margin-left: 4px;
        }

        .empty-state {
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px dashed rgba(0, 229, 255, 0.2);
        }

        .empty-state i {
            font-size: 40px;
            color: var(--neon-cyan);
            opacity: 0.6;
            margin-bottom: 16px;
            display: block;
        }

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

        .view-all {
            display: inline-block;
            margin-top: 24px;
            color: var(--neon-cyan);
            font-weight: 600;
        }

        .view-all:hover {
            color: #fff;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-secondary);
        }

        .accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--bg-primary);
            border: 1px solid rgba(0, 229, 255, 0.12);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .accordion-item:focus-within {
            border-color: rgba(0, 229, 255, 0.35);
        }

        .accordion-header {
            background: transparent;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-body);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none !important;
            position: relative;
            transition: color var(--transition-fast);
        }

        .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--text-primary);
        }

        .accordion-button::after {
            background-image: none !important;
            content: "+";
            font-size: 22px;
            font-weight: 600;
            color: var(--neon-cyan);
            transform: none;
            transition: transform 0.3s;
        }

        .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: none;
            color: var(--neon-magenta);
        }

        .accordion-button:focus {
            box-shadow: none;
        }

        .accordion-body {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 16px;
        }

        /* 咨询表单 */
        .contact-section {
            background: var(--bg-primary);
        }

        .contact-form-wrap {
            max-width: 720px;
            margin: 0 auto;
            background: var(--bg-secondary);
            border: 1px solid rgba(0, 229, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: clamp(28px, 4.5vw, 56px);
            box-shadow: var(--shadow-card);
        }

        .contact-form-wrap .section-title {
            text-align: center;
        }

        .contact-form-wrap .section-sub {
            text-align: center;
            margin: 0 auto 32px;
        }

        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 6px;
        }

        .form-control {
            background: var(--bg-primary);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-size: 15px;
            padding: 12px 16px;
            transition: all var(--transition-fast);
        }

        .form-control:focus {
            background: var(--bg-primary);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
            color: var(--text-primary);
        }

        .form-control::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }

        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }

        .form-select {
            background-color: var(--bg-primary);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-size: 15px;
            padding: 12px 16px;
        }

        .form-select:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
        }

        .form-select option {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .form-tip {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            text-align: center;
        }

        .form-success {
            color: var(--neon-green);
            font-size: 14px;
            padding: 12px;
            text-align: center;
            display: none;
        }

        .form-error {
            color: var(--neon-magenta);
            font-size: 14px;
            padding: 12px;
            text-align: center;
            display: none;
        }

        /* 页脚 */
        .site-footer {
            background: #07090F;
            border-top: 1px solid rgba(0, 229, 255, 0.08);
            padding: 60px 0 24px;
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, #00E5FF 20%, #FF2D95 60%, transparent);
        }

        .footer-brand {
            color: var(--text-primary);
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-dot {
            width: 6px;
            height: 6px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--grad-main);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-body);
            font-size: 14px;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--neon-cyan);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 40px;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--bg-float);
                border-radius: var(--radius-lg);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid rgba(0, 229, 255, 0.1);
            }

            .navbar-nav .nav-link {
                padding: 10px 12px;
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .navbar-nav .nav-link.active {
                background: rgba(0, 229, 255, 0.05);
                border-radius: var(--radius-md);
            }

            .navbar .btn-neon-grad {
                margin-top: 12px;
                width: 100%;
            }

            .hero {
                min-height: auto;
                padding: 80px 0 60px;
            }

            .hero-card {
                margin-top: 32px;
            }

            .tier-grid {
                grid-template-columns: 1fr;
            }

            .tier-card:nth-child(1),
            .tier-card:nth-child(2),
            .tier-card:nth-child(3) {
                margin-top: 0;
            }

            .compare-table {
                grid-template-columns: 1fr;
            }

            .compare-col.recommended {
                order: -1;
            }

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

            .news-card {
                flex-direction: column;
            }

            .news-thumb {
                width: 100%;
                height: 160px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

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

            .stat-num {
                font-size: 28px;
            }

            .countdown {
                gap: 8px;
            }

            .countdown-item {
                min-width: 64px;
                padding: 14px 10px;
            }

            .countdown-item span {
                font-size: 24px;
            }

            .countdown-sep {
                font-size: 18px;
            }

            .site-footer {
                padding-top: 40px;
            }
        }

        @media (min-width: 768px) and (max-width: 991px) {
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tier-card:nth-child(3) {
                grid-column: 1 / -1;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0A0C12;
            --bg-card: #10141D;
            --bg-overlay: rgba(10, 12, 18, 0.82);
            --neon-cyan: #00E5FF;
            --neon-pink: #FF2D95;
            --neon-purple: #7A5CFF;
            --neon-gradient: linear-gradient(135deg, #00E5FF 0%, #FF2D95 100%);
            --text-light: #F2F6FC;
            --text-body: #B4BECA;
            --text-muted: #6E7A8A;
            --neon-green: #00FFA3;
            --border-neon: rgba(0, 229, 255, 0.18);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.18);
            --shadow-glow-pink: 0 0 24px rgba(255, 45, 149, 0.22);
            --transition-base: all 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-body);
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: var(--neon-cyan);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: #ffffff;
        }

        .container {
            max-width: 1200px;
        }

        .section-padding {
            padding: clamp(64px, 8vw, 100px) 0;
        }

        .section-title-wrap {
            margin-bottom: 48px;
        }

        .section-title-wrap .section-title-bar {
            width: 4px;
            height: 36px;
            background: var(--neon-gradient);
            border-radius: 4px;
            display: inline-block;
            vertical-align: middle;
            margin-right: 16px;
        }

        .section-title-wrap .section-title {
            font-size: clamp(24px, 3.4vw, 36px);
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.3;
            display: inline-block;
            vertical-align: middle;
            margin: 0;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 15px;
            margin-top: 12px;
            max-width: 720px;
        }

        .btn {
            font-weight: 700;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.75rem;
            transition: var(--transition-base);
            border: none;
            font-size: 16px;
        }

        .btn:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.4);
        }

        .btn-neon-grad {
            background: var(--neon-gradient);
            color: #0A0C12;
            border: none;
            position: relative;
            overflow: hidden;
        }

        .btn-neon-grad:hover {
            color: #0A0C12;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.4), 0 0 24px rgba(255, 45, 149, 0.3);
        }

        .btn-neon-grad:active {
            transform: translateY(0px);
        }

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

        .btn-outline-neon:hover {
            background: rgba(0, 229, 255, 0.08);
            color: #ffffff;
            border-color: var(--neon-cyan);
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.25);
        }

        .btn-outline-neon:active {
            transform: translateY(0px);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-overlay);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .site-header .navbar {
            min-height: 64px;
            padding-top: 0;
            padding-bottom: 0;
            border-bottom: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, #00E5FF 20%, #FF2D95 60%, transparent) 1;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            font-weight: 800;
            font-size: 22px;
            color: var(--text-light);
            letter-spacing: 1px;
            padding: 0;
        }

        .site-header .navbar-brand:hover {
            color: var(--text-light);
        }

        .site-header .navbar-brand .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--neon-gradient);
            display: inline-block;
            margin-right: 10px;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
        }

        .site-header .navbar-brand .brand-sub {
            font-size: 13px;
            font-weight: 600;
            color: var(--neon-cyan);
            margin-left: 4px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .site-header .navbar-nav .nav-link {
            color: var(--text-body);
            font-weight: 500;
            padding: 0.5rem 1rem;
            position: relative;
            transition: color 0.3s ease;
        }

        .site-header .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--neon-gradient);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .site-header .navbar-nav .nav-link:hover {
            color: #ffffff;
        }

        .site-header .navbar-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .site-header .navbar-nav .nav-link.active {
            color: var(--neon-cyan);
        }

        .site-header .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
        }

        .site-header .navbar-toggler {
            border: 1px solid var(--neon-cyan);
            border-radius: var(--radius-sm);
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.25);
        }

        .site-header .navbar-toggler .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%2300E5FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            padding: 80px 0 60px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(10, 12, 18, 0.55) 0%, rgba(10, 12, 18, 0.92) 100%);
            z-index: 1;
        }

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

        .page-hero .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 24px;
        }

        .page-hero .breadcrumb-item,
        .page-hero .breadcrumb-item a {
            color: var(--text-muted);
            font-size: 14px;
        }

        .page-hero .breadcrumb-item.active {
            color: var(--neon-cyan);
        }

        .page-hero .breadcrumb-item + .breadcrumb-item::before {
            color: var(--neon-cyan);
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid var(--border-neon);
            color: var(--neon-cyan);
            font-size: 14px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 24px;
            margin-bottom: 20px;
        }

        .page-hero .hero-badge i {
            color: var(--neon-green);
        }

        .page-hero h1 {
            font-size: clamp(32px, 4.8vw, 54px);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.15;
            margin-bottom: 20px;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
        }

        .page-hero .hero-subtitle {
            font-size: 17px;
            color: var(--text-body);
            max-width: 640px;
            margin-bottom: 28px;
        }

        /* Intro Section */
        .intro-section {
            background: var(--bg-deep);
        }

        .intro-card {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: clamp(28px, 4.5vw, 56px);
            border: 1px solid var(--border-neon);
            box-shadow: var(--shadow-card);
        }

        .intro-card .intro-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            min-height: 320px;
            background: var(--bg-overlay);
        }

        .intro-card .intro-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .intro-card .intro-content h3 {
            color: var(--text-light);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .intro-card .intro-content p {
            color: var(--text-body);
            margin-bottom: 16px;
            font-size: 15px;
        }

        /* Feature List */
        .feature-section {
            background: var(--bg-card);
            border-top: 1px solid rgba(0, 229, 255, 0.08);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
        }

        .feature-list-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .feature-list-item:last-child {
            border-bottom: none;
        }

        .feature-list-item .feature-icon {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: var(--radius-md);
            background: rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--neon-cyan);
        }

        .feature-list-item h4 {
            color: var(--text-light);
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .feature-list-item p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
        }

        /* Steps Section */
        .step-card {
            text-align: center;
            padding: 32px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 229, 255, 0.1);
            height: 100%;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .step-card:hover {
            border-color: var(--neon-cyan);
            box-shadow: var(--shadow-glow);
            transform: translateY(-6px);
        }

        .step-card .step-num {
            font-size: 48px;
            font-weight: 800;
            background: var(--neon-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            display: block;
            margin-bottom: 16px;
            font-family: "SF Mono", Monaco, Consolas, monospace;
        }

        .step-card h4 {
            color: var(--text-light);
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
        }

        /* Guide Callout */
        .callout-section {
            background: var(--bg-deep);
        }

        .callout-box {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.05), rgba(255, 45, 149, 0.05));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-xl);
            padding: clamp(28px, 4vw, 48px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .callout-box h3 {
            color: var(--text-light);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .callout-box p {
            color: var(--text-muted);
            margin-bottom: 0;
            font-size: 15px;
        }

        /* Related Links */
        .related-links {
            background: var(--bg-card);
            border-top: 1px solid rgba(0, 229, 255, 0.08);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
        }

        .related-link-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-deep);
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition-base);
            height: 100%;
        }

        .related-link-card:hover {
            border-color: var(--neon-pink);
            box-shadow: var(--shadow-glow-pink);
            transform: translateY(-4px);
        }

        .related-link-card .link-icon {
            width: 52px;
            height: 52px;
            min-width: 52px;
            border-radius: var(--radius-md);
            background: rgba(122, 92, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--neon-purple);
        }

        .related-link-card h4 {
            color: var(--text-light);
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .related-link-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
        }

        /* CTA Section */
        .cta-section {
            position: relative;
            background: var(--bg-deep);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-box {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: clamp(24px, 3.4vw, 36px);
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
        }

        .cta-box p {
            color: var(--text-muted);
            margin-bottom: 32px;
        }

        /* Footer */
        .site-footer {
            background: #07090F;
            border-top: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, #00E5FF, #FF2D95, transparent) 1;
            padding-top: 60px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .site-footer .footer-brand .brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon-gradient);
            display: inline-block;
            margin-right: 8px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
        }

        .site-footer .footer-brand .brand-sub {
            font-size: 12px;
            font-weight: 600;
            color: var(--neon-cyan);
            margin-left: 4px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .site-footer .footer-desc {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }

        .site-footer .footer-title {
            color: var(--text-light);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .site-footer .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--neon-gradient);
            border-radius: 2px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition-base);
        }

        .site-footer .footer-links a:hover {
            color: var(--neon-cyan);
            padding-left: 6px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            margin-top: 40px;
            text-align: center;
        }

        .site-footer .footer-bottom p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: rgba(10, 12, 18, 0.98);
                padding: 20px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                border-bottom: 1px solid var(--border-neon);
                margin-top: 8px;
            }

            .site-header .navbar-nav .nav-link {
                padding: 12px 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }

            .site-header .navbar-nav .nav-link::after {
                display: none;
            }

            .site-header .navbar-nav .nav-link.active {
                background: rgba(0, 229, 255, 0.05);
                border-radius: var(--radius-md);
            }

            .site-header .btn-neon-grad {
                width: 100%;
                margin-top: 16px !important;
            }

            .page-hero h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 60px 0 40px;
            }

            .intro-card .intro-img-wrap {
                min-height: 220px;
                margin-bottom: 24px;
            }

            .callout-box {
                flex-direction: column;
                text-align: center;
            }

            .feature-list-item {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
        }

        @media (max-width: 575.98px) {
            .section-padding {
                padding: 48px 0;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .step-card {
                padding: 24px 16px;
            }

            .related-link-card {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (min-width: 1200px) {
            .page-hero {
                padding: 100px 0 80px;
            }
        }

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --bg-dark: #0A0C12;
            --bg-card: #10141D;
            --bg-float: rgba(10, 12, 18, 0.82);
            --neon-cyan: #00E5FF;
            --neon-magenta: #FF2D95;
            --neon-purple: #7A5CFF;
            --neon-green: #00FFA3;
            --text-title: #F2F6FC;
            --text-body: #B4BECA;
            --text-muted: #6E7A8A;
            --border-glow: rgba(0, 229, 255, 0.18);
            --border-magenta: rgba(255, 45, 149, 0.45);
            --grad-main: linear-gradient(135deg, #00E5FF, #FF2D95);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 24px rgba(0, 229, 255, 0.18);
            --shadow-magenta: 0 0 24px rgba(255, 45, 149, 0.22);
            --shadow-hover: 0 8px 40px rgba(0, 0, 0, 0.6);
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: var(--neon-cyan);
            transition: color 0.3s ease;
        }

        a:hover {
            color: #fff;
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
        }

        /* ========== 容器 ========== */
        .container {
            max-width: 1200px;
        }

        /* ========== 按钮系统 ========== */
        .btn-neon-grad {
            background: var(--grad-main);
            color: #08121A;
            border: none;
            border-radius: var(--radius-md);
            font-weight: 700;
            padding: 0.75rem 1.75rem;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
            transition: all 0.3s ease;
        }

        .btn-neon-grad:hover,
        .btn-neon-grad:focus {
            color: #08121A;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.35);
        }

        .btn-neon-grad:active {
            transform: translateY(-1px) scale(0.98);
        }

        .btn-neon-outline {
            background: transparent;
            border: 1px solid var(--neon-cyan);
            color: var(--neon-cyan);
            border-radius: var(--radius-md);
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            transition: all 0.3s ease;
        }

        .btn-neon-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            color: #fff;
            border-color: var(--neon-cyan);
        }

        .btn-neon-outline:active {
            background: rgba(0, 229, 255, 0.15);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--bg-float);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.7), rgba(255, 45, 149, 0.7), transparent);
            background-size: 100% 1px;
            background-position: bottom;
            background-repeat: no-repeat;
        }

        .site-header .navbar {
            min-height: 64px;
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-title) !important;
            letter-spacing: 1px;
        }

        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--grad-main);
            box-shadow: 0 0 12px var(--neon-cyan);
            display: inline-block;
        }

        .brand-sub {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--neon-cyan);
            margin-left: 2px;
            padding: 2px 6px;
            border: 1px solid rgba(0, 229, 255, 0.35);
            border-radius: var(--radius-sm);
        }

        .site-header .nav-link {
            color: var(--text-body);
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color 0.3s ease;
        }

        .site-header .nav-link:hover {
            color: #fff;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--grad-main);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .site-header .nav-link:hover::after {
            width: 70%;
        }

        .site-header .nav-link.active {
            color: var(--neon-cyan);
        }

        .site-header .nav-link.active::after {
            width: 70%;
            background: var(--neon-cyan);
            box-shadow: 0 0 8px var(--neon-cyan);
        }

        .navbar-toggler {
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.4);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300E5FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: var(--bg-float);
                border-radius: var(--radius-lg);
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid var(--border-glow);
            }

            .site-header .navbar-collapse .navbar-nav {
                gap: 0.25rem;
            }

            .site-header .nav-link::after {
                left: 0;
                transform: none;
                width: 0;
            }

            .site-header .nav-link:hover::after,
            .site-header .nav-link.active::after {
                width: 40px;
            }
        }

        /* ========== 文章 Hero ========== */
        .article-hero {
            position: relative;
            padding: clamp(48px, 7vw, 80px) 0 48px;
            background: linear-gradient(160deg, #0A0C12 0%, #10141D 100%);
            border-bottom: 1px solid var(--border-glow);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
            pointer-events: none;
        }

        .article-hero .breadcrumb {
            margin-bottom: 20px;
        }

        .article-hero .breadcrumb-item,
        .article-hero .breadcrumb-item a {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .article-hero .breadcrumb-item.active {
            color: var(--neon-cyan);
        }

        .article-hero .breadcrumb-item::before {
            color: var(--text-muted);
        }

        .article-hero .hero-badge {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 4px 12px;
            border-radius: 100px;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid var(--border-glow);
            margin-bottom: 16px;
        }

        .article-hero h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-title);
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
            max-width: 760px;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: center;
            margin-top: 20px;
        }

        .article-meta .meta-item {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            color: var(--neon-cyan);
            font-size: 0.85rem;
        }

        /* ========== 正文阅读区 ========== */
        .article-body-section {
            padding: clamp(40px, 6vw, 64px) 0;
            background: var(--bg-dark);
        }

        .article-body {
            max-width: 780px;
            margin: 0 auto;
            font-size: 1.0625rem;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body p {
            margin-bottom: 1.5rem;
        }

        .article-body h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            font-weight: 700;
            color: var(--text-title);
            margin: 2.5rem 0 1.25rem;
            line-height: 1.4;
            padding-left: 14px;
            border-left: 3px solid var(--neon-cyan);
        }

        .article-body h3 {
            font-size: clamp(1.15rem, 1.8vw, 1.4rem);
            font-weight: 600;
            color: var(--text-title);
            margin: 2rem 0 1rem;
            padding-left: 12px;
            border-left: 3px solid rgba(255, 45, 149, 0.6);
        }

        .article-body img {
            border-radius: var(--radius-lg);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body blockquote {
            border-left: 4px solid var(--neon-cyan);
            background: rgba(0, 229, 255, 0.05);
            margin: 1.5rem 0;
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-body);
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
        }

        .article-body a {
            color: var(--neon-cyan);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .article-body code {
            background: #161B27;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 2px 8px;
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 0.9em;
            color: var(--neon-cyan);
        }

        .article-body .table {
            color: var(--text-body);
        }

        .article-body .table thead th {
            border-color: rgba(255, 255, 255, 0.1);
            color: var(--text-title);
        }

        .article-body .table td {
            border-color: rgba(255, 255, 255, 0.06);
        }

        .not-found-box {
            max-width: 780px;
            margin: 0 auto;
            text-align: center;
            padding: clamp(40px, 6vw, 64px) 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
        }

        .not-found-box i {
            font-size: 3rem;
            color: var(--neon-cyan);
            margin-bottom: 16px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 1.5rem;
            color: var(--text-title);
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        /* ========== 标签 / 分享 ========== */
        .article-tags-section {
            padding: 0 0 48px;
            background: var(--bg-dark);
        }

        .article-tags {
            max-width: 780px;
            margin: 0 auto;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid var(--border-glow);
            transition: all 0.3s ease;
        }

        .article-tags .tag:hover {
            background: rgba(0, 229, 255, 0.12);
            border-color: var(--neon-cyan);
        }

        .article-share {
            margin-left: auto;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .article-share .share-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-share .share-btn {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            color: var(--text-body);
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .article-share .share-btn:hover {
            color: var(--neon-cyan);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 48px 0 72px;
            background: var(--bg-dark);
        }

        .related-section .section-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 32px;
        }

        .related-section .section-head .bar {
            width: 4px;
            height: 28px;
            border-radius: 4px;
            background: var(--grad-main);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        .related-section .section-head h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            font-weight: 700;
            color: var(--text-title);
            margin: 0;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 24px;
            height: 100%;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .related-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--grad-main);
            transform: scaleY(0);
            transform-origin: center;
            transition: transform 0.35s ease;
        }

        .related-card:hover {
            background: #151B28;
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover), var(--shadow-neon);
        }

        .related-card:hover::before {
            transform: scaleY(1);
        }

        .related-card .card-cat {
            font-size: 0.75rem;
            color: var(--neon-magenta);
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .related-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.6;
            margin-bottom: 8px;

        }

        .related-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }

        /* ========== CTA ========== */
        .article-cta {
            padding: clamp(48px, 7vw, 80px) 0;
            background: linear-gradient(135deg, #0A0C12 0%, #10141D 100%);
            border-top: 1px solid var(--border-glow);
            position: relative;
            overflow: hidden;
        }

        .article-cta::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.1), rgba(255, 45, 149, 0.06) 50%, transparent 70%);
            pointer-events: none;
        }

        .article-cta .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .article-cta h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
        }

        .article-cta p {
            color: var(--text-body);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        .back-to-home {
            text-align: center;
            margin-top: 32px;
        }

        .back-to-home a {
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }

        .back-to-home a:hover {
            color: var(--neon-cyan);
        }

        .back-to-home a i {
            margin-right: 6px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #07090F;
            border-top: 1px solid transparent;
            background-image: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-magenta), transparent);
            background-size: 100% 1px;
            background-position: top;
            background-repeat: no-repeat;
            padding: clamp(48px, 6vw, 72px) 0 24px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 16px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--grad-main);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--neon-cyan);
            padding-left: 6px;
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* ========== 动画 ========== */
        @keyframes float-arrow {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(8px);
            }
        }

        @keyframes pulse-glow {
            0%,
            100% {
                opacity: 0.6;
            }
            50% {
                opacity: 1;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* ========== 响应式 ========== */
        @media (max-width: 768px) {
            .article-hero {
                padding-top: 40px;
            }
            .article-meta {
                gap: 10px 16px;
            }
            .article-share {
                margin-left: 0;
                width: 100%;
                margin-top: 12px;
            }
            .article-tags {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-body {
                font-size: 1rem;
            }
        }

        @media (max-width: 576px) {
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-meta .meta-item {
                font-size: 0.82rem;
            }
            .related-section {
                padding: 32px 0 56px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0C12;
            --bg-secondary: #10141D;
            --bg-overlay: rgba(10, 12, 18, 0.82);
            --neon-cyan: #00E5FF;
            --neon-magenta: #FF2D95;
            --neon-purple: #7A5CFF;
            --neon-green: #00FFA3;
            --text-heading: #F2F6FC;
            --text-body: #B4BECA;
            --text-muted: #6E7A8A;
            --border-cyan: rgba(0, 229, 255, 0.18);
            --border-magenta: rgba(255, 45, 149, 0.45);
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
            --neon-glow: 0 0 24px rgba(0, 229, 255, 0.18);
            --neon-glow-magenta: 0 0 24px rgba(255, 45, 149, 0.22);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --container-width: 1200px;
            --section-gap: clamp(64px, 8vw, 100px);
            --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", "Consolas", monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: var(--neon-cyan);
        }

        .container {
            max-width: var(--container-width);
        }

        .section-gap {
            padding: var(--section-gap) 0;
        }

        .section-title-wrap {
            margin-bottom: 48px;
        }

        .section-title-wrap .section-line {
            width: 48px;
            height: 4px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
            border-radius: 4px;
            margin-bottom: 18px;
        }

        .section-title-wrap h2 {
            font-size: clamp(24px, 3.4vw, 36px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 12px;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
        }

        .section-title-wrap .section-sub {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 600px;
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 12, 18, 0.82);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, #00E5FF 20%, #FF2D95 60%, transparent) 1;
        }

        .site-header .navbar {
            min-height: 64px;
            padding: 0 1rem;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-heading) !important;
            letter-spacing: 0.02em;
        }

        .navbar-brand .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--neon-cyan);
            box-shadow: 0 0 12px var(--neon-cyan);
            margin-right: 10px;
            display: inline-block;
            animation: pulse-dot 2.5s infinite ease-in-out;
        }

        .navbar-brand .brand-sub {
            font-size: 0.75rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-left: 4px;
            transform: translateY(-2px);
        }

        .navbar-nav .nav-link {
            color: var(--text-body) !important;
            font-size: 15px;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color 0.3s ease;
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 8px var(--neon-cyan);
            transition: width 0.3s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #ffffff !important;
        }

        .navbar-nav .nav-link:hover::after {
            width: 60%;
        }

        .navbar-nav .nav-link.active {
            color: var(--neon-cyan) !important;
        }

        .navbar-nav .nav-link.active::after {
            width: 100%;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
            box-shadow: 0 0 12px var(--neon-cyan);
        }

        .btn-neon-grad {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
            color: #0A0C12 !important;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.75rem;
            font-size: 15px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-neon-grad:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.3), 0 0 24px rgba(255, 45, 149, 0.25);
            color: #0A0C12 !important;
        }

        .btn-neon-grad:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-neon-outline {
            background: transparent;
            border: 1px solid var(--neon-cyan);
            color: var(--neon-cyan) !important;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-neon-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            color: #ffffff !important;
            border-color: rgba(0, 229, 255, 0.6);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
        }

        .btn-neon-outline:active {
            background: rgba(0, 229, 255, 0.15);
        }

        .navbar-toggler {
            border: 1px solid rgba(0, 229, 255, 0.4);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 0.25rem rgba(0, 229, 255, 0.25);
        }

        .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 18px;
            display: inline-block;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after,
        .navbar-toggler-icon span {
            content: '';
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--neon-cyan);
            transition: all 0.3s ease;
        }

        .navbar-toggler-icon::before {
            top: 0;
        }

        .navbar-toggler-icon::after {
            bottom: 0;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
            top: 8px;
            transform: rotate(45deg);
            background: var(--neon-magenta);
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
            bottom: 8px;
            transform: rotate(-45deg);
            background: var(--neon-magenta);
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(10, 12, 18, 0.96);
                border-radius: var(--radius-lg);
                padding: 16px;
                margin-top: 12px;
                border: 1px solid rgba(0, 229, 255, 0.15);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
            }

            .navbar-nav .nav-link {
                padding: 12px 16px !important;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .navbar-nav .nav-link.active {
                color: var(--neon-cyan) !important;
                background: rgba(0, 229, 255, 0.05);
                border-radius: var(--radius-sm);
            }

            .btn-neon-grad {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
            }
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 80px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to bottom, rgba(10, 12, 18, 0.55) 0%, rgba(10, 12, 18, 0.92) 100%);
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.12) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

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

        .page-hero .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 20px;
            font-size: 14px;
        }

        .page-hero .breadcrumb-item a {
            color: var(--text-muted);
        }

        .page-hero .breadcrumb-item a:hover {
            color: var(--neon-cyan);
        }

        .page-hero .breadcrumb-item.active {
            color: var(--neon-cyan);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
            content: '/';
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 100px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--neon-cyan);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .page-hero h1 {
            font-size: clamp(32px, 4.8vw, 54px);
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.15;
            margin-bottom: 20px;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
        }

        .page-hero .hero-sub {
            font-size: 17px;
            color: var(--text-body);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== Security Points ===== */
        .security-points {
            background: var(--bg-primary);
        }

        .security-points .point-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(0, 229, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .security-points .point-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: linear-gradient(180deg, var(--neon-cyan), var(--neon-magenta));
            transition: height 0.4s ease;
        }

        .security-points .point-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--card-shadow), var(--neon-glow);
            border-color: rgba(0, 229, 255, 0.3);
        }

        .security-points .point-card:hover::before {
            height: 100%;
        }

        .point-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .point-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .point-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Safety Guide ===== */
        .safety-guide {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .safety-guide::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.3), rgba(255, 45, 149, 0.3), transparent);
        }

        .safety-guide .guide-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: var(--card-shadow);
        }

        .safety-guide .guide-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .safety-guide .guide-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 12, 18, 0.4), transparent 50%);
        }

        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .guide-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 16px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
        }

        .guide-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--neon-green);
            font-size: 14px;
        }

        /* ===== Risk Cards ===== */
        .risk-section .risk-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            height: 100%;
            transition: all 0.35s ease;
        }

        .risk-section .risk-card:hover {
            border-color: rgba(255, 45, 149, 0.35);
            box-shadow: var(--card-shadow), var(--neon-glow-magenta);
            transform: translateY(-4px);
        }

        .risk-card .risk-tag {
            display: inline-block;
            background: rgba(255, 45, 149, 0.12);
            color: var(--neon-magenta);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .risk-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .risk-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Verify Steps ===== */
        .verify-steps {
            background: var(--bg-primary);
        }

        .verify-steps .step-item {
            display: flex;
            gap: 24px;
            position: relative;
            margin-bottom: 40px;
        }

        .verify-steps .step-item:last-child {
            margin-bottom: 0;
        }

        .verify-steps .step-item::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 70px;
            bottom: -20px;
            width: 2px;
            background: linear-gradient(180deg, var(--neon-cyan), rgba(255, 45, 149, 0.3));
        }

        .verify-steps .step-item:last-child::before {
            display: none;
        }

        .step-num {
            width: 60px;
            height: 60px;
            min-width: 60px;
            border-radius: 50%;
            background: var(--bg-secondary);
            border: 2px solid var(--neon-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--neon-cyan);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
            z-index: 1;
        }

        .step-content {
            padding-top: 6px;
        }

        .step-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .step-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-secondary);
        }

        .accordion-item {
            background: var(--bg-secondary);
            border: 1px solid rgba(0, 229, 255, 0.1);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-button {
            background: var(--bg-secondary);
            color: var(--text-heading);
            font-size: 17px;
            font-weight: 600;
            padding: 20px 28px;
            border: none;
            box-shadow: none;
            position: relative;
        }

        .accordion-button::after {
            content: '+';
            background-image: none;
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 20px;
            color: var(--neon-cyan);
            width: auto;
            height: auto;
            transform: none;
            transition: transform 0.3s ease;
        }

        .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--neon-magenta);
            transform: rotate(180deg);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.03);
            color: var(--text-heading);
            box-shadow: inset 0 -1px 0 rgba(0, 229, 255, 0.1);
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-body {
            background: var(--bg-secondary);
            color: var(--text-body);
            padding: 20px 28px 28px;
            font-size: 15px;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, rgba(122, 92, 255, 0.05) 50%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            background: var(--bg-secondary);
            border: 1px solid rgba(0, 229, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: clamp(40px, 6vw, 70px);
            position: relative;
            overflow: hidden;
            text-align: center;
            box-shadow: var(--card-shadow);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
        }

        .cta-box h2 {
            font-size: clamp(26px, 3.6vw, 38px);
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-body);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-box .btn-group-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== Related Links ===== */
        .related-section {
            background: var(--bg-primary);
        }

        .related-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .related-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--neon-cyan), var(--neon-magenta));
            transform: scaleY(0);
            transition: transform 0.4s ease;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--card-shadow), var(--neon-glow);
            border-color: rgba(0, 229, 255, 0.2);
        }

        .related-card:hover::before {
            transform: scaleY(1);
        }

        .related-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 16px;
            line-height: 1.65;
        }

        .related-card .card-link {
            color: var(--neon-cyan);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

        .related-card .card-link:hover {
            gap: 12px;
            color: #ffffff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #07090F;
            border-top: 1px solid transparent;
            border-image: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta), transparent) 1;
            padding-top: 60px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 16px;
        }

        .footer-brand .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--neon-cyan);
            box-shadow: 0 0 12px var(--neon-cyan);
            margin-right: 10px;
            display: inline-block;
        }

        .footer-brand .brand-sub {
            font-size: 0.75rem;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-left: 4px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 8px var(--neon-cyan);
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--neon-cyan);
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            margin-top: 30px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== Animations ===== */
        @keyframes pulse-dot {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(0.85);
            }
        }

        @keyframes pulse-glow {
            0%, 100% {
                opacity: 0.6;
            }
            50% {
                opacity: 1;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 767.98px) {
            .page-hero {
                padding: 50px 0 60px;
            }

            .page-hero .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .verify-steps .step-item {
                flex-direction: column;
                gap: 12px;
            }

            .verify-steps .step-item::before {
                left: 30px;
                top: 60px;
                bottom: -10px;
            }

            .cta-box .btn-group-custom .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .security-points .point-card {
                padding: 24px 20px;
            }

            .risk-card {
                padding: 20px 18px;
            }

            .accordion-button {
                font-size: 15px;
                padding: 16px 18px;
            }

            .accordion-body {
                padding: 16px 18px 22px;
                font-size: 14px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .section-title-wrap {
                margin-bottom: 32px;
            }
        }

        @media (min-width: 992px) and (max-width: 1199.98px) {
            .navbar-nav .nav-link {
                padding: 0.5rem 0.7rem !important;
                font-size: 14px;
            }
        }