/* roulang page: index */
:root {
            --color-bg: #090D1A;
            --color-bg-alt: #0D1424;
            --color-card: rgba(255, 255, 255, 0.05);
            --color-border: rgba(255, 255, 255, 0.08);
            --color-primary: #00D9FF;
            --color-secondary: #7C6CFF;
            --color-success: #35E0A0;
            --color-warning: #FFA84A;
            --color-text-1: rgba(248, 250, 252, 0.95);
            --color-text-2: rgba(248, 250, 252, 0.65);
            --color-text-3: rgba(248, 250, 252, 0.45);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.35);
            --max-width: 1200px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--color-bg);
            font-family: var(--font-family);
            color: var(--color-text-1);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            font-feature-settings: "tnum";
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all .3s ease;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* === Header === */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 64px;
            background: rgba(9, 13, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all .3s ease;
        }
        .site-header.scrolled {
            background: rgba(9, 13, 26, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 12px rgba(0, 217, 255, 0.35);
        }
        .logo-text {
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.5px;
            background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.8));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            gap: 6px;
            margin: 0 16px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            height: 34px;
            padding: 0 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(248, 250, 252, 0.7);
            border: 1px solid transparent;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .nav-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-chip.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(124, 108, 255, 0.2));
            border-color: rgba(0, 217, 255, 0.4);
            box-shadow: 0 0 16px rgba(0, 217, 255, 0.15);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            height: 38px;
            padding: 0 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 0 14px rgba(0, 217, 255, 0.3);
            transition: all .3s ease;
            white-space: nowrap;
            margin-left: 16px;
        }
        .header-cta:hover {
            box-shadow: 0 0 24px rgba(0, 217, 255, 0.5);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.05);
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: rgba(248, 250, 252, 0.85);
            transition: all .3s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(9, 13, 26, 0.98);
            backdrop-filter: blur(20px);
            padding: 16px 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 99;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.show {
            display: flex;
        }
        .mobile-menu .nav-chip {
            width: 100%;
            height: 40px;
            justify-content: center;
        }
        .mobile-menu .header-cta {
            margin-left: 0;
            margin-top: 10px;
            justify-content: center;
            height: 42px;
        }
        @media (max-width: 900px) {
            .main-nav {
                display: none;
            }
            .header-cta.desktop-only {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }

        /* === Buttons === */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(0, 217, 255, 0.35);
            transition: all .3s ease;
            border: none;
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 217, 255, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: rgba(248, 250, 252, 0.85);
            font-size: 16px;
            font-weight: 500;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all .3s ease;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
            transform: translateY(-2px);
        }

        /* === Hero === */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding-top: 64px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(9, 13, 26, 0.55), rgba(9, 13, 26, 0.92)), radial-gradient(ellipse at 20% 50%, rgba(0, 217, 255, 0.15), transparent 60%), radial-gradient(ellipse at 90% 20%, rgba(124, 108, 255, 0.12), transparent 50%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
            padding: 60px 0 80px;
        }
        .hero-text {
            animation: fadeUp .8s ease both;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-chip {
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 14px;
            border-radius: 999px;
            background: rgba(0, 217, 255, 0.12);
            border: 1px solid rgba(0, 217, 255, 0.3);
            font-size: 13px;
            color: rgba(0, 217, 255, 0.9);
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            color: #fff;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--color-text-2);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 480px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.08);
            animation: fadeUp 1s ease .15s both;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }
        .hero-visual .glass-bar {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            padding: 14px 18px;
            border-radius: 12px;
            background: rgba(9, 13, 26, 0.6);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            color: rgba(248, 250, 252, 0.9);
        }
        .hero-visual .glass-bar .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #35E0A0;
            box-shadow: 0 0 8px rgba(53, 224, 160, 0.6);
            display: inline-block;
            margin-right: 8px;
        }
        @media (max-width: 900px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
                padding: 40px 0 60px;
                text-align: center;
            }
            .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-visual {
                max-width: 520px;
                margin: 0 auto;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-visual img {
                min-height: 240px;
            }
        }

        /* === Section common === */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-title-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 44px;
        }
        .section-title {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 32px;
            font-weight: 700;
            color: #fff;
        }
        .section-title::before {
            content: '';
            width: 4px;
            height: 26px;
            border-radius: 2px;
            background: linear-gradient(180deg, #00D9FF, #7C6CFF);
        }
        .section-more {
            font-size: 14px;
            color: var(--color-text-2);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color .3s;
        }
        .section-more:hover {
            color: var(--color-primary);
        }
        .section-more svg {
            width: 16px;
            height: 16px;
            transition: transform .3s;
        }
        .section-more:hover svg {
            transform: translateX(4px);
        }
        @media (max-width: 640px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-title-wrap {
                margin-bottom: 28px;
            }
        }

        /* === Trust metrics === */
        .metrics-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .metric-card {
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            background: var(--color-card);
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all .3s;
        }
        .metric-card:hover {
            border-color: rgba(0, 217, 255, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .metric-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            text-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
            font-feature-settings: "tnum";
            line-height: 1.2;
        }
        .metric-label {
            font-size: 14px;
            color: var(--color-text-2);
            margin-top: 8px;
        }
        @media (max-width: 900px) {
            .metrics-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .metrics-wrap {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-num {
                font-size: 28px;
            }
        }

        /* === News cards === */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            border-radius: var(--radius-lg);
            background: var(--color-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            border-color: rgba(0, 217, 255, 0.25);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
        }
        .news-card .thumb {
            aspect-ratio: 16/9;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(124, 108, 255, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .news-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .news-card:hover .thumb img {
            transform: scale(1.05);
        }
        .news-card .thumb-icon {
            font-size: 32px;
            color: rgba(0, 217, 255, 0.5);
        }
        .news-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }
        .card-cat {
            display: inline-flex;
            align-items: center;
            height: 22px;
            padding: 0 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 217, 255, 0.1);
            color: rgba(0, 217, 255, 0.85);
            border: 1px solid rgba(0, 217, 255, 0.2);
        }
        .card-time {
            font-size: 13px;
            color: var(--color-text-3);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .summary {
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .card-link {
            font-size: 14px;
            font-weight: 500;
            color: rgba(248, 250, 252, 0.8);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            align-self: flex-start;
        }
        .card-link:hover {
            color: var(--color-primary);
        }
        .card-link svg {
            width: 14px;
            height: 14px;
            transition: transform .3s;
        }
        .card-link:hover svg {
            transform: translateX(4px);
        }
        .news-empty {
            grid-column: 1/-1;
            border: 2px dashed rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 60px 20px;
            text-align: center;
            color: var(--color-text-3);
            font-size: 16px;
        }
        @media (max-width: 900px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* === Plan cards === */
        .plans-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .plan-card {
            position: relative;
            border-radius: var(--radius-lg);
            background: var(--color-card);
            border: 1px solid var(--color-border);
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            transition: all .35s;
        }
        .plan-card:hover {
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .plan-card.recommended {
            border-color: rgba(0, 217, 255, 0.4);
            box-shadow: 0 0 30px rgba(0, 217, 255, 0.15);
            transform: scale(1.04);
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.08), rgba(124, 108, 255, 0.06)), var(--color-card);
        }
        .plan-card.recommended:hover {
            transform: scale(1.04) translateY(-4px);
            box-shadow: 0 0 40px rgba(0, 217, 255, 0.25);
        }
        .plan-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            height: 24px;
            padding: 0 14px;
            border-radius: 6px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(0, 217, 255, 0.3);
            white-space: nowrap;
        }
        .plan-level {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-3);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .plan-name {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .plan-desc {
            font-size: 14px;
            color: var(--color-text-2);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .plan-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 28px;
            flex: 1;
        }
        .plan-features li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: rgba(248, 250, 252, 0.75);
            line-height: 1.5;
        }
        .plan-features .check {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(53, 224, 160, 0.15);
            color: var(--color-success);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .plan-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: rgba(248, 250, 252, 0.85);
            font-size: 15px;
            font-weight: 500;
            transition: all .3s;
        }
        .plan-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
            color: #fff;
        }
        .plan-card.recommended .plan-btn {
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            border: none;
            box-shadow: 0 0 16px rgba(0, 217, 255, 0.3);
        }
        .plan-card.recommended .plan-btn:hover {
            box-shadow: 0 0 26px rgba(0, 217, 255, 0.5);
        }
        @media (max-width: 900px) {
            .plans-wrap {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .plan-card.recommended {
                transform: scale(1.02);
            }
            .plan-card.recommended:hover {
                transform: scale(1.02);
            }
        }

        /* === Compare table === */
        .compare-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            background: var(--color-card);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 760px;
        }
        .compare-table th,
        .compare-table td {
            padding: 14px 20px;
            text-align: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .compare-table thead th {
            padding: 20px;
            font-size: 16px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.03);
            color: #fff;
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table td:first-child {
            text-align: left;
            font-weight: 500;
            color: var(--color-text-2);
            font-size: 14px;
        }
        .compare-table .plan-col {
            background: transparent;
            transition: background .3s;
        }
        .compare-table .plan-col.highlight {
            background: rgba(0, 217, 255, 0.05);
            box-shadow: inset 0 0 30px rgba(0, 217, 255, 0.05);
        }
        .compare-table .price-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
        }
        .ic-check {
            color: var(--color-success);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .ic-cross {
            color: var(--color-text-3);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .compare-mobile {
            display: none;
        }
        @media (max-width: 900px) {
            .compare-table {
                display: none;
            }
            .compare-mobile {
                display: grid;
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .compare-mobile .plan-card {
                padding: 24px;
            }
        }
        @media (max-width: 640px) {
            .compare-mobile {
                grid-template-columns: 1fr;
            }
        }

        /* === Countdown === */
        .countdown-card {
            position: relative;
            text-align: center;
            padding: 56px 40px;
            border-radius: 20px;
            background: radial-gradient(ellipse at 20% 0%, rgba(0, 217, 255, 0.2), transparent 50%), radial-gradient(ellipse at 80% 100%, rgba(124, 108, 255, 0.2), transparent 50%), var(--color-bg-alt);
            border: 1px solid rgba(255, 255, 255, 0.08);
            max-width: 720px;
            margin: 0 auto;
            overflow: hidden;
        }
        .countdown-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 217, 255, 0.06), transparent 60%);
            animation: pulse 4s ease infinite;
            pointer-events: none;
        }
        @keyframes pulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.2);
                opacity: 1;
            }
        }
        .countdown-badge {
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 16px;
            border-radius: 999px;
            background: linear-gradient(90deg, #FFA84A, #FF6A3D);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(255, 168, 74, 0.4);
            margin-bottom: 20px;
        }
        .countdown-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 24px;
        }
        .countdown-grid {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 14px 18px;
            min-width: 72px;
            text-align: center;
            backdrop-filter: blur(10px);
        }
        .countdown-item .num {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            font-feature-settings: "tnum";
            line-height: 1.2;
            text-shadow: 0 0 12px rgba(0, 217, 255, 0.3);
        }
        .countdown-item .label {
            font-size: 12px;
            color: var(--color-text-3);
            margin-top: 4px;
        }
        .countdown-sep {
            display: flex;
            align-items: center;
            font-size: 24px;
            color: rgba(255, 255, 255, 0.3);
            font-weight: 300;
        }
        @media (max-width: 640px) {
            .countdown-card {
                padding: 36px 20px;
            }
            .countdown-title {
                font-size: 22px;
            }
            .countdown-item {
                min-width: 60px;
                padding: 10px 12px;
            }
            .countdown-item .num {
                font-size: 26px;
            }
        }

        /* === FAQ === */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }
        .faq-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            padding: 22px 0;
            font-size: 18px;
            font-weight: 600;
            color: rgba(248, 250, 252, 0.9);
            text-align: left;
            transition: color .3s;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-text-2);
            flex-shrink: 0;
            transition: all .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-answer p {
            padding-bottom: 22px;
            font-size: 16px;
            color: var(--color-text-2);
            line-height: 1.8;
        }
        @media (max-width: 640px) {
            .faq-question {
                font-size: 16px;
                padding: 18px 0;
            }
        }

        /* === Contact form === */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .contact-info h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .contact-info p {
            font-size: 16px;
            color: var(--color-text-2);
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .contact-channels {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .contact-channel {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            border-radius: 12px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            transition: all .3s;
        }
        .contact-channel:hover {
            border-color: rgba(0, 217, 255, 0.25);
        }
        .contact-channel .icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 217, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .contact-channel .info {
            flex: 1;
        }
        .contact-channel .info .label {
            font-size: 13px;
            color: var(--color-text-3);
        }
        .contact-channel .info .value {
            font-size: 15px;
            font-weight: 500;
            color: rgba(248, 250, 252, 0.85);
        }
        .form-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(20px);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            color: rgba(248, 250, 252, 0.8);
            margin-bottom: 6px;
        }
        .form-group label .required {
            color: var(--color-primary);
            margin-left: 2px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            height: 44px;
            padding: 0 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(248, 250, 252, 0.9);
            font-size: 14px;
            outline: none;
            transition: all .3s;
        }
        .form-group textarea {
            height: auto;
            padding: 12px 16px;
            resize: vertical;
            min-height: 100px;
        }
        .form-group input:hover,
        .form-group select:hover,
        .form-group textarea:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(0, 217, 255, 0.15);
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .form-submit {
            width: 100%;
            height: 48px;
            border-radius: 10px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border: none;
            box-shadow: 0 0 18px rgba(0, 217, 255, 0.3);
            transition: all .3s;
            cursor: pointer;
        }
        .form-submit:hover {
            box-shadow: 0 0 28px rgba(0, 217, 255, 0.5);
            transform: translateY(-2px);
        }
        .form-privacy {
            font-size: 12px;
            color: var(--color-text-3);
            text-align: center;
            margin-top: 14px;
        }
        @media (max-width: 900px) {
            .contact-wrap {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 640px) {
            .form-card {
                padding: 22px;
            }
        }

        /* === Footer === */
        .site-footer {
            background: #060A14;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-3);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 280px;
        }
        .footer-qr {
            width: 110px;
            height: 110px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--color-text-3);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: rgba(248, 250, 252, 0.9);
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-text-3);
            transition: color .3s;
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact .item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-2);
        }
        .footer-contact .item .icon {
            color: var(--color-primary);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-3);
            flex-wrap: wrap;
            gap: 10px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* === Mobile menu === */
        .mobile-menu {
            display: none;
        }
        .mobile-menu.show {
            display: flex;
            flex-direction: column;
        }

        /* === Scrollbar === */
        ::-webkit-scrollbar {
            width: 6px;
            background: #0d1424;
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(0, 217, 255, 0.3);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(0, 217, 255, 0.5);
        }

        /* focus visibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid rgba(0, 217, 255, 0.5);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --color-bg: #090D1A;
            --color-bg-2: #0D1424;
            --color-glass: rgba(255, 255, 255, 0.05);
            --color-border: rgba(255, 255, 255, 0.08);
            --color-primary: #00D9FF;
            --color-secondary: #7C6CFF;
            --color-success: #35E0A0;
            --color-warning: #FFA84A;
            --color-text: rgba(248, 250, 252, 0.95);
            --color-text2: rgba(248, 250, 252, 0.65);
            --color-text3: rgba(248, 250, 252, 0.45);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.35);
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--color-bg);
            background-image: radial-gradient(ellipse at 20% 0%, rgba(0, 217, 255, 0.05), transparent 50%), radial-gradient(ellipse at 80% 10%, rgba(124, 108, 255, 0.04), transparent 40%);
            color: var(--color-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

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

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

        /* ========== HEADER ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(9, 13, 26, 0.7);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(9, 13, 26, 0.92);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }

        .site-header .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 16px rgba(0, 217, 255, 0.35);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.75));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            white-space: nowrap;
        }

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

        .nav-chip {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 34px;
            padding: 0 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(248, 250, 252, 0.7);
            background: transparent;
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }

        .nav-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-chip.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(124, 108, 255, 0.2));
            border-color: rgba(0, 217, 255, 0.4);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 24px;
            border-radius: 10px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-cta:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(9, 13, 26, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 24px 28px;
            z-index: 999;
            flex-direction: column;
            gap: 12px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

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

        .mobile-drawer .nav-chip {
            width: 100%;
            height: 42px;
            justify-content: flex-start;
            padding: 0 18px;
        }

        .mobile-drawer .header-cta {
            width: 100%;
            margin-top: 8px;
        }

        /* ========== CATEGORY HERO ========== */
        .cat-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            margin-top: 64px;
        }

        .cat-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(9, 13, 26, 0.55) 0%, rgba(9, 13, 26, 0.82) 60%, #090D1A 100%);
            z-index: 1;
        }

        .cat-hero-overlay::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 217, 255, 0.15), transparent 60%);
        }

        .cat-hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 24px;
            max-width: 1200px;
            width: 100%;
        }

        .cat-hero .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 28px;
            padding: 0 14px;
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(124, 108, 255, 0.15));
            border: 1px solid rgba(0, 217, 255, 0.35);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 22px;
        }

        .cat-hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            color: #fff;
            max-width: 800px;
        }

        .cat-hero h1 .grad {
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .cat-hero p {
            font-size: 16px;
            color: var(--color-text2);
            max-width: 640px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 12px;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 217, 255, 0.35);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
            color: rgba(248, 250, 252, 0.8);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: var(--color-bg-2);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 28px;
            padding: 0 14px;
            border-radius: 999px;
            background: rgba(0, 217, 255, 0.08);
            border: 1px solid rgba(0, 217, 255, 0.2);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

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

        .section-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            position: relative;
            padding-left: 18px;
            letter-spacing: -0.01em;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, #00D9FF, #7C6CFF);
            box-shadow: 0 0 8px rgba(0, 217, 255, 0.5);
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text2);
            margin-top: 14px;
            margin-left: 18px;
            max-width: 720px;
            line-height: 1.8;
        }

        /* ========== ADVANTAGE CARDS ========== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .adv-card {
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            text-align: center;
        }

        .adv-card:hover {
            border-color: rgba(0, 217, 255, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .adv-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(124, 108, 255, 0.15));
            border: 1px solid rgba(0, 217, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-primary);
            margin: 0 auto 18px;
        }

        .adv-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .adv-card p {
            font-size: 14px;
            color: var(--color-text2);
            line-height: 1.7;
        }

        /* ========== SCENARIO ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            position: relative;
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .scenario-card::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(0, 217, 255, 0.1), transparent 70%);
            pointer-events: none;
        }

        .scenario-card:hover {
            border-color: rgba(0, 217, 255, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .scenario-num {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 16px;
            line-height: 1;
        }

        .scenario-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--color-text2);
            line-height: 1.75;
        }

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

        .step-card {
            position: relative;
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .step-card:hover {
            border-color: rgba(0, 217, 255, 0.25);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .step-badge {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #00D9FF, #7C6CFF);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 0 16px rgba(0, 217, 255, 0.35);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--color-text2);
            line-height: 1.7;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -20px;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.3);
            font-size: 20px;
            z-index: 2;
            pointer-events: none;
        }

        .step-card:last-child .step-arrow {
            display: none;
        }

        /* ========== CONTENT CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            border-color: rgba(0, 217, 255, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.12), rgba(124, 108, 255, 0.12));
        }

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

        .content-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .card-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(9, 13, 26, 0.35));
        }

        .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
        }

        .card-cat {
            display: inline-flex;
            align-items: center;
            height: 24px;
            padding: 0 12px;
            border-radius: 999px;
            background: rgba(0, 217, 255, 0.1);
            border: 1px solid rgba(0, 217, 255, 0.2);
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
        }

        .card-time {
            font-size: 12px;
            color: var(--color-text3);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .card-title {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-excerpt {
            font-size: 14px;
            color: var(--color-text2);
            line-height: 1.7;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            transition: all 0.25s ease;
        }

        .card-link i {
            transition: transform 0.25s ease;
        }

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

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

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease;
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 8px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            transition: color 0.25s ease;
            user-select: none;
        }

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

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 8px 24px;
            font-size: 15px;
            color: var(--color-text2);
            line-height: 1.85;
            max-width: 680px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

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

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(0, 217, 255, 0.12), rgba(124, 108, 255, 0.06), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            text-align: center;
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: 24px;
            padding: 60px 40px;
            backdrop-filter: blur(20px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            max-width: 900px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--color-text2);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #060A14;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            padding-bottom: 44px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer-qr {
            width: 120px;
            height: 120px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.08), rgba(124, 108, 255, 0.08));
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
            line-height: 1.5;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, #00D9FF, #7C6CFF);
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.25s ease;
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .footer-contact .icon {
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom span {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1023px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

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

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

            .desktop-only {
                display: none;
            }

            .cat-hero h1 {
                font-size: 40px;
            }

            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .main-nav,
            .desktop-only {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .cat-hero {
                min-height: 360px;
            }

            .cat-hero-content {
                padding: 56px 16px;
            }

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

            .cat-hero p {
                font-size: 15px;
            }

            .section {
                padding: 60px 0;
            }

            .section-title {
                font-size: 26px;
            }

            .advantage-grid,
            .scenario-grid,
            .steps-grid,
            .card-grid {
                grid-template-columns: 1fr;
            }

            .hero-actions {
                flex-direction: column;
            }

            .btn-primary,
            .btn-ghost {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .cta-inner {
                padding: 40px 20px;
            }

            .cta-inner h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .advantage-grid,
            .scenario-grid,
            .steps-grid,
            .card-grid {
                gap: 16px;
            }

            .logo-text {
                font-size: 15px;
            }

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

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

/* roulang page: article */
:root {
            --bg: #090D1A;
            --bg-alt: #0D1424;
            --bg-footer: #060A14;
            --brand: #00D9FF;
            --brand2: #7C6CFF;
            --success: #35E0A0;
            --warn: #FFA84A;
            --text-primary: rgba(248, 250, 252, 0.95);
            --text-secondary: rgba(248, 250, 252, 0.65);
            --text-muted: rgba(248, 250, 252, 0.45);
            --glass: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.08);
            --radius-lg: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg);
            color: var(--text-primary);
            font-family: var(--font-sans);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background:
                radial-gradient(900px 500px at 80% -10%, rgba(0, 217, 255, 0.06), transparent 60%),
                radial-gradient(700px 420px at 10% 10%, rgba(124, 108, 255, 0.05), transparent 60%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            outline: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            z-index: 100;
            background: rgba(9, 13, 26, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s, box-shadow 0.3s;
        }
        .site-header.scrolled {
            background: rgba(9, 13, 26, 0.92);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .site-header .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand), var(--brand2));
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            box-shadow: 0 0 16px rgba(0, 217, 255, 0.35);
            flex-shrink: 0;
        }
        .logo-text {
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            height: 34px;
            padding: 0 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(248, 250, 252, 0.7);
            background: transparent;
            border: 1px solid transparent;
            transition: all 0.25s;
        }
        .nav-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-chip.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(124, 108, 255, 0.2));
            border-color: rgba(0, 217, 255, 0.4);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 34px;
            padding: 0 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--brand), var(--brand2));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 0 18px rgba(0, 217, 255, 0.3);
            transition: all 0.25s;
            margin-left: 16px;
        }
        .header-cta:hover {
            box-shadow: 0 0 28px rgba(0, 217, 255, 0.45);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            width: 38px;
            height: 38px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 88px;
            padding-bottom: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: rgba(248, 250, 252, 0.55);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .breadcrumb .current {
            color: var(--text-muted);
            max-width: 240px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-wrap {
            max-width: 860px;
            margin: 0 auto;
            padding: 40px 0 24px;
        }
        .article-head {
            text-align: center;
            margin-bottom: 32px;
            padding: 0 24px;
        }
        .article-cat {
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 14px;
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.18), rgba(124, 108, 255, 0.18));
            border: 1px solid rgba(0, 217, 255, 0.35);
            font-size: 13px;
            color: var(--brand);
            font-weight: 600;
            margin-bottom: 20px;
        }
        .article-head h1 {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .article-meta i {
            font-style: normal;
            color: rgba(248, 250, 252, 0.25);
        }
        .article-content {
            max-width: 780px;
            margin: 0 auto;
            padding: 0 24px;
            color: rgba(248, 250, 252, 0.85);
            font-size: 16px;
            line-height: 2;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-primary);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px;
            padding-left: 24px;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content blockquote {
            border-left: 3px solid var(--brand);
            background: rgba(0, 217, 255, 0.06);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin-bottom: 20px;
            color: var(--text-secondary);
        }
        .article-content strong {
            color: var(--text-primary);
            font-weight: 600;
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 2px 8px;
            border-radius: 6px;
            font-family: "SFMono-Regular", Consolas, Menlo, monospace;
            font-size: 14px;
        }
        .article-content img {
            border-radius: 12px;
            margin-bottom: 8px;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
            border-radius: 12px;
            overflow: hidden;
        }
        .article-content th,
        .article-content td {
            padding: 14px 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            text-align: left;
        }
        .article-content th {
            background: rgba(255, 255, 255, 0.06);
            font-weight: 600;
            color: var(--text-primary);
        }
        .article-tags {
            max-width: 780px;
            margin: 40px auto 0;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            height: 30px;
            padding: 0 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: var(--text-muted);
            transition: all 0.2s;
        }
        .tag:hover {
            color: var(--brand);
            border-color: rgba(0, 217, 255, 0.4);
            background: rgba(0, 217, 255, 0.08);
        }
        .not-found {
            max-width: 600px;
            margin: 80px auto;
            padding: 48px 32px;
            text-align: center;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .not-found h1 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand), var(--brand2));
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(0, 217, 255, 0.35);
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 217, 255, 0.5);
            transform: translateY(-2px);
        }
        .article-back {
            max-width: 780px;
            margin: 32px auto 0;
            padding: 0 24px;
            display: flex;
            gap: 20px;
            justify-content: flex-end;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: color 0.2s;
            border: none;
            background: none;
            cursor: pointer;
            padding: 0;
        }
        .back-link:hover {
            color: var(--brand);
        }
        .related {
            background: var(--bg-alt);
            padding: 80px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            margin-top: 48px;
        }
        .related .section-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 40px;
        }
        .section-head .bar {
            width: 4px;
            height: 24px;
            border-radius: 999px;
            background: linear-gradient(180deg, var(--brand), var(--brand2));
            box-shadow: 0 0 12px rgba(0, 217, 255, 0.4);
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: block;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s;
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 217, 255, 0.25);
        }
        .related-card img {
            width: 100%;
            height: auto;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .card-body {
            padding: 20px;
        }
        .badge {
            display: inline-block;
            height: 24px;
            line-height: 24px;
            padding: 0 10px;
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(124, 108, 255, 0.15));
            border: 1px solid rgba(0, 217, 255, 0.25);
            font-size: 12px;
            color: var(--brand);
            margin-bottom: 12px;
        }
        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 50px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 14px;
        }
        .card-meta a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .card-meta a:hover {
            color: var(--brand);
        }
        .article-cta {
            position: relative;
            padding: 90px 0;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
        }
        .article-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(9, 13, 26, 0.85), rgba(9, 13, 26, 0.92));
        }
        .article-cta .container {
            text-align: center;
        }
        .article-cta h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .article-cta p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .article-cta .btn-primary {
            position: relative;
            z-index: 1;
        }
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 60px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 20px;
            max-width: 280px;
        }
        .footer-qr {
            width: 112px;
            height: 112px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--brand);
        }
        .footer-contact .item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .footer-contact .icon {
            display: inline-flex;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 12px;
            color: var(--text-muted);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(9, 13, 26, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                display: none;
                z-index: 99;
                gap: 8px;
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
            }
            .main-nav.open {
                display: flex;
            }
            .nav-chip {
                height: 42px;
                padding: 0 16px;
                font-size: 15px;
                justify-content: flex-start;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: inline-flex;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-head h1 {
                font-size: 28px;
            }
            .article-content {
                font-size: 15px;
                padding: 0 16px;
            }
            .article-head {
                padding: 0 16px;
            }
            .article-tags {
                padding: 0 16px;
            }
            .article-back {
                justify-content: flex-start;
                padding: 0 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
            .article-cta h2 {
                font-size: 24px;
            }
            .breadcrumb {
                padding-top: 80px;
            }
        }
        @media (max-width: 520px) {
            .article-meta {
                flex-direction: column;
                gap: 6px;
            }
            .article-head h1 {
                font-size: 24px;
            }
            .btn-primary {
                width: 100%;
                padding: 0 20px;
            }
            .article-back {
                flex-direction: column;
            }
            .related-card h3 {
                font-size: 17px;
            }
        }

/* roulang page: category2 */
:root {
  --bg: #090D1A;
  --bg-alt: #0D1424;
  --bg-deep: #060A14;
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.08);
  --primary: #00D9FF;
  --secondary: #7C6CFF;
  --success: #35E0A0;
  --warning: #FFA84A;
  --text: rgba(248, 250, 252, 0.95);
  --text-2: rgba(248, 250, 252, 0.65);
  --text-3: rgba(248, 250, 252, 0.45);
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 90vw;
  height: 60vh;
  background: radial-gradient(ellipse, rgba(0, 217, 255, 0.08), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
@media (max-width: 640px) { .container { padding: 0 16px; } }
.text-gradient {
  background: linear-gradient(135deg, #00D9FF, #7C6CFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-glow { text-shadow: 0 0 24px rgba(0, 217, 255, 0.35); }
.num { font-feature-settings: "tnum"; }

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  z-index: 100;
  background: rgba(9, 13, 26, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background .3s, box-shadow .3s;
}
.site-header.scrolled {
  background: rgba(9, 13, 26, 0.92);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #00D9FF, #7C6CFF);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: #fff; font-size: 18px;
  box-shadow: 0 0 16px rgba(0, 217, 255, 0.3);
}
.logo-text { font-size: 18px; font-weight: 700; letter-spacing: .4px; color: #fff; white-space: nowrap; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  padding: 5px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-chip {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  white-space: nowrap;
  transition: all .25s;
  border: 1px solid transparent;
}
.nav-chip:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.nav-chip.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(124, 108, 255, 0.2));
  border: 1px solid rgba(0, 217, 255, 0.4);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 24px;
  border-radius: 10px;
  background: linear-gradient(135deg, #00D9FF, #7C6CFF);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
  transition: all .3s;
}
.header-cta:hover { box-shadow: 0 0 30px rgba(0, 217, 255, 0.5); transform: translateY(-1px); }
.hamburger {
  display: none;
  width: 42px; height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
@media (max-width: 767px) {
  .hamburger { display: inline-flex; }
  .desktop-only { display: none !important; }
  .main-nav {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 20px 16px;
    border-radius: 0;
    border-left: none; border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(9, 13, 26, 0.97);
    transform: translateY(-120%);
    transition: transform .35s ease;
    display: flex;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-chip { justify-content: center; height: 44px; font-size: 15px; }
}

/* Hero */
.category-hero {
  position: relative;
  padding: 170px 0 100px;
  background-size: cover;
  background-position: center;
  text-align: center;
  overflow: hidden;
}
.category-hero .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 13, 26, 0.72), rgba(9, 13, 26, 0.92));
}
.category-hero .overlay::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle, rgba(124, 108, 255, 0.18), transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; }
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(0, 217, 255, 0.25);
  backdrop-filter: blur(10px);
}
.hero-h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  margin: 22px 0 16px;
  letter-spacing: 1px;
}
.hero-sub {
  font-size: 17px;
  color: rgba(248, 250, 252, 0.7);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.8;
}
@media (max-width: 767px) {
  .category-hero { padding: 140px 0 64px; }
  .hero-h1 { font-size: 32px; }
  .hero-sub { font-size: 15px; }
}

/* Section */
.section-pad { padding: 90px 0; }
@media (max-width: 767px) { .section-pad { padding: 56px 0; } }
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  margin: 0;
}
.section-title::before {
  content: "";
  width: 4px;
  height: 26px;
  border-radius: 2px;
  background: linear-gradient(180deg, #00D9FF, #7C6CFF);
  flex-shrink: 0;
}
.section-sub {
  color: rgba(248, 250, 252, 0.6);
  font-size: 16px;
  margin-top: 10px;
  line-height: 1.8;
}
@media (max-width: 767px) {
  .section-title { font-size: 26px; }
  .section-sub { font-size: 14px; }
}

/* Two-col layout */
.two-col-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
@media (max-width: 1023px) {
  .two-col-layout { grid-template-columns: 1fr; }
}

/* List items */
.list-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.list-item:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 217, 255, 0.25);
  box-shadow: var(--shadow-hover);
}
.list-item .thumb {
  width: 220px;
  flex-shrink: 0;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(124, 108, 255, 0.15));
}
.list-item .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.list-item:hover .thumb img { transform: scale(1.04); }
.list-item .info { flex: 1; min-width: 0; }
.list-item .meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  color: rgba(248, 250, 252, 0.45);
  font-size: 13px;
  margin-bottom: 6px;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  color: rgba(0, 217, 255, 0.9);
  background: rgba(0, 217, 255, 0.08);
  border: 1px solid rgba(0, 217, 255, 0.2);
}
.list-item h3 {
  font-size: 19px;
  font-weight: 600;
  color: #fff;
  margin: 4px 0 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.list-item p {
  font-size: 15px;
  color: rgba(248, 250, 252, 0.65);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 10px;
}
.list-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: color .25s;
}
.list-link i { transition: transform .25s; }
.list-link:hover { color: var(--primary); }
.list-link:hover i { transform: translateX(4px); }
@media (max-width: 767px) {
  .list-item { flex-direction: column; padding: 18px; }
  .list-item .thumb { width: 100%; }
  .list-item h3 { white-space: normal; }
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
@media (max-width: 1023px) {
  .sidebar { position: static; }
}
.side-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.side-title {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.side-title::before {
  content: "";
  width: 3px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(180deg, #00D9FF, #7C6CFF);
}
.chip-list { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all .25s;
  cursor: pointer;
}
.chip:hover {
  color: #fff;
  border-color: rgba(0, 217, 255, 0.4);
  background: rgba(0, 217, 255, 0.08);
}
.reco-card {
  display: flex;
  gap: 14px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all .25s;
  margin-bottom: 12px;
}
.reco-card:last-child { margin-bottom: 0; }
.reco-card:hover {
  border-color: rgba(0, 217, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
  transform: translateX(3px);
}
.reco-card img {
  width: 90px;
  height: 62px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(124, 108, 255, 0.15));
}
.reco-card .r-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  margin: 0 0 4px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.reco-card .r-desc {
  font-size: 12px;
  color: rgba(248, 250, 252, 0.5);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1023px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .feature-grid { grid-template-columns: 1fr; } }
.feature-card {
  padding: 30px 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all .3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 217, 255, 0.25);
  box-shadow: var(--shadow-hover);
}
.feature-card .icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.16), rgba(124, 108, 255, 0.16));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 8px;
}
.feature-card p {
  font-size: 14px;
  color: rgba(248, 250, 252, 0.6);
  line-height: 1.7;
  margin: 0;
}

/* Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1023px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .process-grid { grid-template-columns: 1fr; } }
.process-step {
  position: relative;
  padding: 30px 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all .3s;
}
.process-step:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 217, 255, 0.25);
}
.step-num {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00D9FF, #7C6CFF);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 217, 255, 0.3);
  margin-bottom: 16px;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 8px;
}
.process-step p {
  font-size: 14px;
  color: rgba(248, 250, 252, 0.6);
  line-height: 1.7;
  margin: 0;
}

/* FAQ */
.faq-section .faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.faq-item:first-child { border-top: 1px solid rgba(255, 255, 255, 0.08); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 4px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
  transition: color .25s;
}
.faq-q:hover { color: var(--primary); }
.faq-icon {
  font-size: 22px;
  color: var(--primary);
  transition: transform .3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 0 4px 22px;
  color: rgba(248, 250, 252, 0.7);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.open .faq-a { display: block; }
@media (max-width: 767px) {
  .faq-q { font-size: 15px; }
}

/* CTA */
.cta-section { padding: 80px 0; position: relative; }
.cta-card {
  position: relative;
  background: var(--bg-alt);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 64px 40px;
  text-align: center;
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.15), transparent 70%);
  pointer-events: none;
}
.cta-card::after {
  content: "";
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 40%;
  height: 60%;
  background: radial-gradient(circle, rgba(124, 108, 255, 0.12), transparent 70%);
  pointer-events: none;
}
.cta-card > * { position: relative; z-index: 1; }
.cta-card h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 14px;
}
.cta-card p {
  font-size: 16px;
  color: rgba(248, 250, 252, 0.65);
  max-width: 520px;
  margin: 0 auto 32px;
}
.btn-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #00D9FF, #7C6CFF);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.35);
  transition: all .3s;
}
.btn-primary:hover {
  box-shadow: 0 0 32px rgba(0, 217, 255, 0.5);
  transform: translateY(-2px);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 32px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: all .3s;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}
@media (max-width: 767px) {
  .cta-card { padding: 44px 20px; }
  .cta-card h2 { font-size: 26px; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
}

/* Footer */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
@media (max-width: 1023px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-desc {
  color: rgba(248, 250, 252, 0.6);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.footer-qr {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 46px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  font-size: 12px;
  color: rgba(248, 250, 252, 0.45);
  text-align: center;
  line-height: 1.4;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 16px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: rgba(248, 250, 252, 0.6);
  font-size: 14px;
  transition: color .25s, padding-left .25s;
}
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact .item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(248, 250, 252, 0.6);
  font-size: 14px;
  margin-bottom: 10px;
}
.footer-contact .icon { color: var(--primary); font-size: 15px; width: 18px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: rgba(248, 250, 252, 0.45);
  font-size: 12px;
}
@media (max-width: 640px) {
  .footer-bottom { justify-content: center; text-align: center; }
}
.section-bg-alt { background: var(--bg-alt); }