/* roulang page: index */
:root {
            --primary: #00d4ff;
            --primary-dark: #00a8cc;
            --secondary: #8b5cf6;
            --accent: #f43f5e;
            --bg-dark: #06060e;
            --bg-panel: #0d0d1a;
            --bg-panel2: #111127;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --border-subtle: rgba(255, 255, 255, .06);
            --border-strong: rgba(0, 212, 255, .25);
            --radius-sm: 6px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-panel: 0 12px 40px rgba(0, 0, 0, .45);
            --shadow-glow: 0 0 40px rgba(0, 212, 255, .12);
            --transition-base: all .25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-dark);
            color: var(--text-main);
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            outline: none;
        }

        /* 容器 */
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media(max-width:768px) {
            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 6, 14, .82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: .5px;
            background: linear-gradient(135deg, #00d4ff, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }
        @media(max-width:640px) {
            .brand-logo {
                font-size: 1.1rem;
            }
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .03);
            border: 1px solid var(--border-subtle);
            border-radius: 48px;
            padding: 4px;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 48px;
            font-size: .92rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, .05);
        }
        .nav-chip.active {
            background: linear-gradient(135deg, rgba(0, 212, 255, .18), rgba(139, 92, 246, .18));
            color: var(--primary);
            box-shadow: 0 0 16px rgba(0, 212, 255, .12);
            border: 1px solid rgba(0, 212, 255, .18);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 11px 28px;
            border-radius: 48px;
            font-size: .95rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            box-shadow: 0 4px 24px rgba(0, 212, 255, .25);
            transition: var(--transition-base);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 212, 255, .35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible,
        .nav-chip:focus-visible,
        .help-toggler:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 11px 28px;
            border-radius: 48px;
            font-size: .95rem;
            font-weight: 500;
            color: #fff;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .12);
            transition: var(--transition-base);
        }
        .btn-outline:hover {
            border-color: rgba(0, 212, 255, .4);
            background: rgba(0, 212, 255, .08);
            color: var(--primary);
        }

        /* 移动端菜单 */
        .mobile-trigger {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--border-subtle);
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
        }
        .mobile-draw {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(6, 6, 14, .98);
            backdrop-filter: blur(24px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 18px 20px 26px;
            transform: translateY(-110%);
            transition: transform .35s cubic-bezier(.4, 0, .2, 1);
        }
        .mobile-draw.open {
            transform: translateY(0);
        }
        .mobile-draw a {
            display: block;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition-base);
        }
        .mobile-draw a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, .06);
        }
        .mobile-draw a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .04);
        }

        /* 通用背景 */
        .bg-glow {
            position: fixed;
            top: -10%;
            left: -10%;
            right: -10%;
            bottom: -10%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(600px 400px at 20% 10%, rgba(0, 212, 255, .04), transparent 60%),
                radial-gradient(700px 500px at 80% 20%, rgba(139, 92, 246, .04), transparent 60%),
                radial-gradient(500px 400px at 60% 80%, rgba(244, 63, 94, .02), transparent 60%);
        }

        /* 区块 */
        .section-block {
            position: relative;
            z-index: 1;
            padding: 84px 0;
        }
        @media(max-width:768px) {
            .section-block {
                padding: 56px 0;
            }
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.5px;
        }
        @media(max-width:768px) {
            .section-title {
                font-size: 1.6rem;
            }
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            margin-top: 14px;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 120px 0 80px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(75deg, rgba(6, 6, 14, .96) 0%, rgba(6, 6, 14, .85) 50%, rgba(6, 6, 14, .55) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 8px 18px;
            border-radius: 48px;
            font-size: .85rem;
            font-weight: 500;
            color: #e0f2fe;
            background: rgba(0, 212, 255, .1);
            border: 1px solid rgba(0, 212, 255, .25);
            margin-bottom: 28px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #00ffb0;
            box-shadow: 0 0 8px rgba(0, 255, 176, .7);
            animation: pulse-dot 1.8s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: .5;
                transform: scale(.85);
            }
        }
        .hero-title {
            font-size: clamp(2.4rem, 5.5vw, 4.2rem);
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -1px;
            background: linear-gradient(120deg, #e0f2fe, #00d4ff, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }
        .hero-sub {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            font-weight: 600;
            color: #e0e7ff;
            margin-bottom: 14px;
        }
        .hero-text {
            max-width: 580px;
            font-size: .98rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            line-height: 1.85;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-panel {
            background: rgba(13, 13, 26, .72);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-panel);
            position: relative;
            overflow: hidden;
        }
        .hero-panel::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 24px;
            right: 24px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 255, .5), transparent);
        }
        .panel-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 22px;
        }
        .panel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
        }
        .panel-row:last-child {
            border-bottom: none;
        }
        .panel-label {
            font-size: .88rem;
            color: var(--text-muted);
        }
        .panel-value {
            font-size: .95rem;
            font-weight: 700;
            color: #e0f2fe;
        }
        .panel-tag {
            display: inline-flex;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: .75rem;
            font-weight: 600;
            background: rgba(0, 255, 176, .1);
            color: #00ffb0;
        }

        /* 统计 */
        .stats-section {
            background: rgba(13, 13, 26, .5);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 56px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        @media(max-width:900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        .stat-card {
            text-align: center;
            padding: 16px;
        }
        .stat-value {
            font-size: 2.4rem;
            font-weight: 900;
            background: linear-gradient(135deg, #00d4ff, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .stat-label {
            font-size: .86rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* 核心说明 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 52px;
            align-items: center;
        }
        @media(max-width:960px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        .intro-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
            transition: transform .6s ease;
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-list {
            display: flex;
            flex-direction: column;
            gap: 22px;
            margin-top: 8px;
        }
        .intro-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .intro-icon {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            background: rgba(0, 212, 255, .1);
            border: 1px solid rgba(0, 212, 255, .2);
            color: var(--primary);
        }
        .intro-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .intro-item p {
            font-size: .9rem;
            color: var(--text-muted);
        }

        /* 分类卡片 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        @media(max-width:992px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media(max-width:640px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            display: block;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 212, 255, .3);
            box-shadow: 0 16px 48px rgba(0, 0, 0, .35);
        }
        .category-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-card:hover .category-card-img img {
            transform: scale(1.05);
        }
        .category-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(13, 13, 26, .9) 100%);
        }
        .category-card-body {
            padding: 28px 24px 26px;
        }
        .category-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--primary);
            background: rgba(0, 212, 255, .1);
            border: 1px solid rgba(0, 212, 255, .2);
            margin-bottom: 14px;
        }
        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .category-card p {
            font-size: .9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .86rem;
            font-weight: 600;
            color: var(--primary);
        }
        .category-link:hover {
            gap: 10px;
        }

        /* 资讯列表 */
        .latest-section {
            background: rgba(13, 13, 26, .4);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-card {
            display: flex;
            flex-direction: column;
            gap: 8px;
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition-base);
        }
        .content-card:hover {
            border-color: rgba(0, 212, 255, .2);
            background: var(--bg-panel2);
            transform: translateX(4px);
        }
        .content-card-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: .75rem;
            font-weight: 600;
            background: rgba(0, 212, 255, .1);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, .15);
        }
        .badge-violet {
            background: rgba(139, 92, 246, .1);
            color: #a78bfa;
            border-color: rgba(139, 92, 246, .2);
        }
        .badge-rose {
            background: rgba(244, 63, 94, .1);
            color: #fb7185;
            border-color: rgba(244, 63, 94, .2);
        }
        .content-time {
            font-size: .8rem;
            color: var(--text-muted);
        }
        .content-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.45;
            transition: color .25s;
        }
        .content-card:hover h3 {
            color: var(--primary);
        }
        .content-card p {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .empty-tip {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            background: var(--bg-panel);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-strong);
            font-size: .95rem;
        }

        /* 流程 */
        .process-section {
            padding: 84px 0;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin-top: 12px;
        }
        @media(max-width:992px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media(max-width:520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }
        .process-step {
            position: relative;
            padding: 28px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }
        .process-step:hover {
            border-color: rgba(0, 212, 255, .25);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .step-bracket {
            width: 84px;
            height: 84px;
            border-radius: 44px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 212, 255, .06);
            border: 1px solid rgba(0, 212, 255, .15);
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            position: relative;
        }
        .step-bracket::after {
            content: '';
            position: absolute;
            left: 100px;
            top: 50%;
            width: 38px;
            height: 1px;
            background: linear-gradient(90deg, rgba(0, 212, 255, .4), transparent);
        }
        @media(max-width:992px) {
            .step-bracket::after {
                display: none;
            }
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: .86rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-section {
            background: rgba(13, 13, 26, .35);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 84px 0;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 26px;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, .1);
        }
        .faq-item details {
            list-style: none;
        }
        .faq-item details summary {
            list-style: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 4px 0;
        }
        .faq-item details summary::-webkit-details-marker {
            display: none;
        }
        .faq-item details summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: .8rem;
            color: var(--text-muted);
            transition: transform .3s;
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 16px 0 4px;
            color: var(--text-muted);
            font-size: .92rem;
            line-height: 1.85;
            border-top: 1px solid rgba(255, 255, 255, .05);
            margin-top: 10px;
        }

        /* CTA */
        .cta-section {
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-band {
            background: linear-gradient(135deg, rgba(0, 212, 255, .08), rgba(139, 92, 246, .08));
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            padding: 56px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: 20%;
            right: 20%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }
        @media(max-width:768px) {
            .cta-band {
                padding: 36px 24px;
            }
        }
        .cta-title {
            font-size: 1.6rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 6px;
            color: #e0f2fe;
        }
        .cta-text {
            font-size: .95rem;
            color: var(--text-muted);
        }

        /* 页脚 */
        .site-footer {
            background: #05050c;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        @media(max-width:768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #00d4ff, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col-title {
            font-size: .95rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: .86rem;
            color: var(--text-muted);
            transition: var(--transition-base);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: .8rem;
            color: rgba(148, 163, 184, .6);
        }
        .footer-bottom span {
            white-space: nowrap;
        }

        /* 响应式 */
        @media(max-width:992px) {
            .nav-chips {
                display: none;
            }
            .mobile-trigger {
                display: flex;
            }
            .hero-section {
                min-height: auto;
                padding-top: 110px;
            }
        }
        @media(max-width:640px) {
            .btn-primary,
            .btn-outline {
                padding: 9px 22px;
                font-size: .88rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions a {
                justify-content: center;
            }
            .hero-panel {
                padding: 22px;
            }
        }
        @media(min-width:993px) {
            .mobile-draw {
                display: none !important;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --bg-primary: #080d17;
            --bg-secondary: #0e1526;
            --bg-card: #141d2e;
            --bg-elevated: #1a2438;
            --border: #233047;
            --border-light: rgba(255, 255, 255, 0.07);
            --text-main: #e9edf5;
            --text-secondary: #99a7c2;
            --text-weak: #64748b;
            --cyan: #22d3ee;
            --purple: #a78bfa;
            --green: #34d399;
            --amber: #fbbf24;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 34px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 8px 32px rgba(34, 211, 238, 0.18);
            --header-h: 76px;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ========== Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(8, 13, 23, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-h);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 20px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 22px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.5px;
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 5px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-light);
            padding: 5px;
            border-radius: 999px;
            transition: background 0.3s;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 999px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            white-space: nowrap;
            line-height: 1.4;
        }

        .nav-chip i {
            margin-right: 6px;
            font-size: 12px;
        }

        .nav-chip:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-1px);
        }

        .nav-chip:active {
            transform: scale(0.97);
        }

        .nav-chip.active {
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            color: #0a0f1e;
            font-weight: 700;
            box-shadow: 0 4px 18px rgba(34, 211, 238, 0.3);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            color: #0a0f1e;
            font-size: 14px;
            font-weight: 700;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 2px 12px rgba(34, 211, 238, 0.2);
        }

        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(34, 211, 238, 0.4);
        }

        .header-cta:active {
            transform: scale(0.97);
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            color: var(--text-main);
            font-size: 17px;
            transition: all 0.3s;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            padding: 96px 0 76px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-light);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(8, 13, 23, 0.94) 30%, rgba(8, 13, 23, 0.6) 100%);
            backdrop-filter: brightness(0.9);
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--cyan);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 22px;
        }

        .page-hero h1 {
            font-size: clamp(32px, 5vw, 50px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .page-hero h1 .gradient-text {
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            max-width: 620px;
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 30px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            color: #0a0f1e;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(34, 211, 238, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 34px rgba(34, 211, 238, 0.4);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.16);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(34, 211, 238, 0.4);
            transform: translateY(-2px);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 34px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .breadcrumb a {
            transition: color 0.3s;
        }

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

        .breadcrumb i {
            font-size: 10px;
            opacity: 0.6;
        }

        /* ========== Sections ========== */
        .section-block {
            padding: 80px 0;
        }

        .section-block-alt {
            background: var(--bg-secondary);
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 48px;
        }

        .section-head .eyebrow {
            color: var(--cyan);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-head .eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, var(--cyan), transparent);
            border-radius: 4px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .section-head p {
            margin-top: 12px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        /* Intro feature */
        .intro-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .intro-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 30px 26px;
            transition: all 0.35s ease;
        }

        .intro-card:hover {
            border-color: rgba(34, 211, 238, 0.35);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }

        .intro-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(167, 139, 250, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.2);
            color: var(--cyan);
            font-size: 20px;
            margin-bottom: 20px;
        }

        .intro-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .intro-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
        }

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

        .card-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .card-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-color: rgba(34, 211, 238, 0.3);
        }

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

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

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

        .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8, 13, 23, 0.75), transparent 60%);
        }

        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(8, 13, 23, 0.72);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--cyan);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

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

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-size: 14px;
            font-weight: 600;
            transition: gap 0.3s ease;
        }

        .card-link:hover {
            gap: 14px;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: all 0.35s ease;
        }

        .step-item:hover {
            border-color: rgba(34, 211, 238, 0.4);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }

        .step-num {
            font-size: 40px;
            font-weight: 800;
            line-height: 1;
            background: linear-gradient(135deg, var(--cyan), var(--purple));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            opacity: 0.7;
            margin-bottom: 18px;
            display: block;
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            color: var(--text-secondary);
            font-size: 13.5px;
            line-height: 1.7;
        }

        /* Tips */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .tip-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 26px;
            transition: all 0.35s ease;
        }

        .tip-card:hover {
            border-color: rgba(167, 139, 250, 0.35);
            box-shadow: 0 8px 30px rgba(167, 139, 250, 0.12);
        }

        .tip-img {
            flex-shrink: 0;
            width: 120px;
            height: 120px;
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .tip-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .tip-body {
            flex: 1;
        }

        .tip-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .tip-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 12px;
        }

        .tip-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(52, 211, 153, 0.1);
            border: 1px solid rgba(52, 211, 153, 0.3);
            color: var(--green);
            font-size: 12px;
            font-weight: 600;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            transition: border-color 0.3s;
            overflow: hidden;
        }

        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.35);
            box-shadow: 0 4px 24px rgba(34, 211, 238, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 22px;
            text-align: left;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-question i {
            color: var(--cyan);
            transition: transform 0.35s ease;
            flex-shrink: 0;
            font-size: 14px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 280px;
        }

        .faq-answer p {
            padding: 0 22px 22px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
        }

        .cta-box {
            position: relative;
            border-radius: 24px;
            padding: 70px 48px;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--border-light);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(8, 13, 23, 0.95) 40%, rgba(8, 13, 23, 0.55));
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 560px;
        }

        .cta-inner h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        /* ========== Footer ========== */
        .site-footer {
            border-top: 1px solid var(--border-light);
            background: var(--bg-secondary);
            padding-top: 64px;
            padding-bottom: 36px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 14px;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
            max-width: 360px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color 0.3s, transform 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--cyan);
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 28px;
            border-top: 1px solid var(--border-light);
            color: var(--text-weak);
            font-size: 13px;
        }

        /* ========== Focus / Accessibility ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 2px;
            border-radius: 6px;
        }

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

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

        @media (max-width: 900px) {
            .mobile-toggle {
                display: flex;
            }

            .nav-chips {
                position: absolute;
                top: var(--header-h);
                left: 16px;
                right: 16px;
                flex-direction: column;
                align-items: stretch;
                background: rgba(14, 21, 38, 0.97);
                backdrop-filter: blur(18px);
                border: 1px solid var(--border-light);
                border-radius: 16px;
                padding: 12px;
                box-shadow: var(--shadow);
                display: none;
                z-index: 999;
            }

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

            .nav-chip {
                border-radius: 12px;
                padding: 12px 18px;
                justify-content: flex-start;
            }

            .nav-chip i {
                margin-right: 10px;
            }

            .header-cta {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 18px;
            }

            .page-hero {
                padding: 64px 0 52px;
            }

            .section-block {
                padding: 56px 0;
            }

            .intro-grid,
            .cards-grid,
            .tips-grid {
                grid-template-columns: 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

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

            .tip-img {
                width: 100%;
                height: 180px;
            }

            .cta-box {
                padding: 44px 24px;
                border-radius: 18px;
            }

            .faq-question {
                font-size: 14px;
                padding: 18px;
            }

            .faq-answer p {
                padding: 0 18px 18px;
            }

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

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

            .logo {
                font-size: 18px;
            }
        }

        @media (max-width: 400px) {
            .logo-sub {
                display: none;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
                justify-content: center;
            }
        }

        /* 动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(22px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-badge,
        .page-hero h1,
        .hero-subtitle,
        .hero-actions {
            animation: fadeInUp 0.7s ease both;
        }

        .hero-subtitle {
            animation-delay: 0.1s;
        }

        .hero-actions {
            animation-delay: 0.2s;
        }

/* roulang page: article */
:root {
            --primary: #00e5ff;
            --primary-dark: #00b8d4;
            --primary-light: #7df9ff;
            --accent: #ff2d95;
            --bg-dark: #0a0e1a;
            --bg-card: #111827;
            --bg-elevated: #1a2332;
            --text-main: #e5e7eb;
            --text-sub: #9ca3af;
            --text-weak: #6b7280;
            --border: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 35px rgba(0, 229, 255, 0.12);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font: inherit;
            color: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 14px;
            padding-bottom: 14px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
        }
        .brand-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0a0e1a;
            font-size: 0.95rem;
            box-shadow: 0 6px 20px rgba(0, 229, 255, 0.25);
            flex-shrink: 0;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(0, 229, 255, 0.3);
            transform: translateY(-1px);
        }
        .nav-chip.active {
            color: #04131a;
            background: linear-gradient(135deg, var(--primary), #6ef3ff);
            box-shadow: 0 4px 18px rgba(0, 229, 255, 0.35);
        }
        .nav-chip:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.5);
            outline-offset: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 700;
            color: #0a0e1a;
            background: linear-gradient(135deg, var(--primary), #4df0c6);
            box-shadow: 0 8px 24px rgba(0, 229, 255, 0.3);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 229, 255, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.5);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 700;
            color: var(--primary);
            background: transparent;
            border: 1.5px solid rgba(0, 229, 255, 0.4);
            transition: all 0.3s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.5);
            outline-offset: 2px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background-size: cover;
            background-position: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 26, 0.55) 0%, rgba(10, 14, 26, 0.88) 100%);
        }
        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            color: var(--text-weak);
            font-size: 0.875rem;
            margin-bottom: 18px;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            font-size: 0.75rem;
        }
        .article-hero-title {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            text-align: center;
            max-width: 900px;
            margin: 0 auto 20px;
            text-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
            overflow-wrap: break-word;
        }
        .article-hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            color: var(--text-sub);
            font-size: 0.875rem;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-sub);
        }
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 40px;
            padding-top: 48px;
            padding-bottom: 80px;
        }
        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .article-footer-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all 0.3s ease;
        }
        .sidebar-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .sidebar-card-title {
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
        }
        .sidebar-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-link {
            display: flex;
            align-items: center;
            padding: 10px 12px;
            border-radius: 10px;
            color: var(--text-sub);
            font-size: 0.875rem;
            transition: all 0.25s ease;
            background: rgba(255, 255, 255, 0.02);
        }
        .sidebar-link:hover {
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary);
            transform: translateX(3px);
        }
        .sidebar-desc {
            color: var(--text-weak);
            font-size: 0.8125rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .not-found-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 80px 40px;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .not-found-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 24px;
            border-radius: 20px;
            background: rgba(255, 45, 149, 0.12);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
        }
        .not-found-card h2 {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .not-found-card p {
            color: var(--text-sub);
            margin-bottom: 28px;
        }
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: #cbd5e0;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin: 2rem 0 1rem;
            padding-left: 1rem;
            border-left: 4px solid var(--primary);
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #fff;
            margin: 1.5rem 0 0.75rem;
        }
        .article-content h4 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: #e5e7eb;
            margin: 1.25rem 0 0.5rem;
        }
        .article-content p {
            margin-bottom: 1.25rem;
        }
        .article-content ul {
            margin: 1rem 0;
            padding-left: 1.5rem;
            list-style: disc;
        }
        .article-content ol {
            margin: 1rem 0;
            padding-left: 1.5rem;
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-light);
        }
        .article-content img {
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .article-content blockquote {
            border-left: 3px solid var(--accent);
            background: rgba(255, 45, 149, 0.08);
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #b0b8c4;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .article-content th,
        .article-content td {
            padding: 12px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-content th {
            background: rgba(0, 229, 255, 0.06);
            color: #fff;
            font-weight: 600;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid rgba(0, 229, 255, 0.15);
            transition: all 0.25s ease;
        }
        .tag:hover {
            background: rgba(0, 229, 255, 0.15);
            transform: translateY(-1px);
        }
        .category-tabs-section {
            padding: 80px 0;
            background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.03), transparent);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 14px;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-sub);
            max-width: 600px;
            margin: 0 auto;
        }
        .category-tabs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-tab-card {
            display: block;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            transition: all 0.3s ease;
        }
        .category-tab-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .category-cover {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 18px;
            height: 120px;
        }
        .category-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-tab-card:hover .category-cover img {
            transform: scale(1.06);
        }
        .category-cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(10, 14, 26, 0.7));
        }
        .category-cover .category-icon {
            position: absolute;
            bottom: 10px;
            left: 12px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(10, 14, 26, 0.7);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .category-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            padding-left: 4px;
        }
        .category-desc {
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 1.6;
            padding-left: 4px;
        }
        .stats-section {
            padding: 80px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 40px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all 0.3s ease;
        }
        .stat-item:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        }
        .stat-number {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-sub);
            font-size: 0.875rem;
        }
        .faq-section {
            padding: 80px 0;
            border-top: 1px solid var(--border);
            background: linear-gradient(180deg, transparent, rgba(255, 45, 149, 0.02), transparent);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.25);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            list-style: none;
            font-size: 0.95rem;
            transition: background 0.25s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            font-size: 0.75rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary {
            background: rgba(0, 229, 255, 0.04);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 1.8;
        }
        .faq-answer p {
            margin-bottom: 8px;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }
        .cta-section {
            padding: 40px 0 80px;
        }
        .cta-card {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(255, 45, 149, 0.06)), var(--bg-card);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 20px;
            padding: 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        .cta-card h2 {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 8px;
            font-weight: 800;
        }
        .cta-card p {
            color: var(--text-sub);
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .site-footer {
            background: #080b14;
            border-top: 1px solid var(--border);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-desc {
            color: var(--text-weak);
            font-size: 0.875rem;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col-title {
            color: #fff;
            font-weight: 700;
            margin-bottom: 16px;
            font-size: 0.9rem;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-weak);
            font-size: 0.875rem;
            transition: all 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(2px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: var(--text-weak);
            font-size: 0.8125rem;
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .category-tabs-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .brand-logo {
                font-size: 1.05rem;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                justify-content: flex-start;
            }
            .category-tabs-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-card {
                padding: 32px;
                flex-direction: column;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
            }
            .article-card {
                padding: 28px 20px;
            }
            .article-hero {
                padding: 56px 0 40px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .nav-chip {
                padding: 7px 12px;
                font-size: 0.8125rem;
            }
            .article-layout {
                padding-top: 32px;
                padding-bottom: 56px;
            }
            .not-found-card {
                padding: 56px 24px;
            }
            .article-footer-nav {
                flex-direction: column;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #06b6d4;
            --primary-dark: #0e7490;
            --primary-light: #22d3ee;
            --secondary: #8b5cf6;
            --secondary-dark: #6d28d9;
            --accent: #f59e0b;
            --bg-dark: #0b1220;
            --bg-panel: rgba(30, 41, 59, .72);
            --bg-panel-solid: #1e293b;
            --text-main: #e2e8f0;
            --text-muted: #94a3b8;
            --text-soft: #64748b;
            --border: rgba(148, 163, 184, .16);
            --border-strong: rgba(148, 163, 184, .32);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, .24);
            --shadow-md: 0 12px 36px rgba(0, 0, 0, .35);
            --shadow-lg: 0 24px 72px rgba(0, 0, 0, .42);
            --glow-primary: 0 0 32px rgba(6, 182, 212, .18);
            --glow-secondary: 0 0 32px rgba(139, 92, 246, .18);
            --transition: all .32s cubic-bezier(.4, 0, .2, 1);
            --container-max: 1240px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #f8fafc;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 18, 32, .82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 32px rgba(0, 0, 0, .38);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 24px rgba(6, 182, 212, .35);
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.2rem;
            color: #f8fafc;
            letter-spacing: .02em;
            white-space: nowrap;
            background: linear-gradient(120deg, #e2e8f0, #f1f5f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            justify-content: center;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 999px;
            font-size: .9rem;
            font-weight: 500;
            color: var(--text-muted);
            border: 1px solid transparent;
            white-space: nowrap;
            transition: var(--transition);
            background: transparent;
        }

        .nav-chip:hover {
            color: var(--text-main);
            background: rgba(6, 182, 212, .07);
            border-color: rgba(6, 182, 212, .28);
            transform: translateY(-1px);
        }

        .nav-chip.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(6, 182, 212, .92), rgba(139, 92, 246, .88));
            border-color: transparent;
            box-shadow: 0 4px 20px rgba(6, 182, 212, .3);
        }

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

        .menu-toggle {
            width: 42px;
            height: 42px;
            display: none;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 1.15rem;
            background: rgba(30, 41, 59, .6);
            transition: var(--transition);
        }

        .menu-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: .95rem;
            letter-spacing: .01em;
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 24px rgba(6, 182, 212, .32);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(6, 182, 212, .45);
        }

        .btn-primary:active {
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(6, 182, 212, .3);
        }

        .btn-ghost {
            background: rgba(30, 41, 59, .5);
            color: var(--text-main);
            border-color: var(--border-strong);
            backdrop-filter: blur(4px);
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(6, 182, 212, .06);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: .85rem;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 1.05rem;
            border-radius: 14px;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(6, 182, 212, .5);
            outline-offset: 3px;
        }

        /* ===== Hero 首屏 ===== */
        .category-hero {
            position: relative;
            padding: 96px 0 72px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(11, 18, 32, .94) 25%, rgba(11, 18, 32, .72) 55%, rgba(11, 18, 32, .45) 100%);
            z-index: -1;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            z-index: -1;
        }

        .hero-content {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: 999px;
            background: rgba(6, 182, 212, .14);
            border: 1px solid rgba(6, 182, 212, .35);
            color: var(--primary-light);
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }

        .hero-badge i {
            font-size: .8rem;
        }

        .hero-title {
            font-size: clamp(2.1rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 18px;
        }

        .hero-title .grad {
            background: linear-gradient(120deg, var(--primary-light), var(--secondary), var(--primary-light));
            background-size: 200% 100%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: grad-shift 8s ease infinite alternate;
        }

        @keyframes grad-shift {
            0% { background-position: 0% 50%; }
            100% { background-position: 100% 50%; }
        }

        .hero-desc {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 44px;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 16px;
            max-width: 520px;
        }

        .hero-metric {
            padding: 18px 20px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, .045);
            border: 1px solid var(--border);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .hero-metric:hover {
            border-color: rgba(6, 182, 212, .4);
            background: rgba(6, 182, 212, .06);
            transform: translateY(-3px);
        }

        .hero-metric-num {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--primary-light);
            margin-bottom: 2px;
        }

        .hero-metric-label {
            font-size: .84rem;
            color: var(--text-muted);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 88px 0;
            position: relative;
        }

        .section-alt {
            background: linear-gradient(180deg, #0d1526, #0b1220);
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: var(--primary-light);
            background: rgba(6, 182, 212, .1);
            border: 1px solid rgba(6, 182, 212, .25);
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== 服务卡片 ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .service-card {
            position: relative;
            padding: 36px 28px 32px;
            border-radius: var(--radius-lg);
            background: var(--bg-panel);
            border: 1px solid var(--border);
            backdrop-filter: blur(10px);
            transition: var(--transition);
            overflow: hidden;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity .35s ease;
        }

        .service-card:hover {
            transform: translateY(-6px);
            border-color: rgba(6, 182, 212, .38);
            box-shadow: var(--glow-primary), var(--shadow-md);
            background: rgba(30, 41, 59, .85);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 1.4rem;
            margin-bottom: 22px;
            background: linear-gradient(135deg, rgba(6, 182, 212, .18), rgba(139, 92, 246, .18));
            border: 1px solid rgba(6, 182, 212, .22);
            color: var(--primary-light);
        }

        .service-title {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .service-text {
            font-size: .9rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .87rem;
            font-weight: 600;
            color: var(--primary-light);
            transition: gap .3s ease;
        }

        .service-link:hover {
            gap: 10px;
        }

        /* ===== 安全要点 ===== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
            align-items: center;
        }

        .security-media {
            grid-column: span 5;
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }

        .security-media img {
            width: 100%;
            height: 100%;
            min-height: 340px;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .security-media:hover img {
            transform: scale(1.03);
        }

        .security-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 18, 32, .75));
        }

        .security-badge {
            position: absolute;
            left: 20px;
            bottom: 20px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(11, 18, 32, .75);
            border: 1px solid rgba(6, 182, 212, .4);
            color: var(--primary-light);
            font-size: .82rem;
            font-weight: 600;
            backdrop-filter: blur(8px);
        }

        .security-features {
            grid-column: span 7;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .security-item {
            display: flex;
            gap: 18px;
            padding: 22px 24px;
            border-radius: var(--radius-md);
            background: rgba(30, 41, 59, .5);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .security-item:hover {
            border-color: rgba(6, 182, 212, .36);
            background: rgba(30, 41, 59, .75);
            transform: translateX(4px);
        }

        .security-item-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 1.1rem;
            background: rgba(6, 182, 212, .12);
            border: 1px solid rgba(6, 182, 212, .2);
            color: var(--primary-light);
        }

        .security-item-body h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }

        .security-item-body p {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 登录流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            counter-reset: step;
        }

        .process-card {
            position: relative;
            padding: 36px 24px 30px;
            border-radius: var(--radius-lg);
            background: var(--bg-panel);
            border: 1px solid var(--border);
            text-align: center;
            transition: var(--transition);
        }

        .process-card:hover {
            transform: translateY(-6px);
            border-color: rgba(139, 92, 246, .4);
            box-shadow: var(--glow-secondary);
        }

        .process-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 6px 20px rgba(6, 182, 212, .3);
        }

        .process-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-text {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .process-arrow {
            position: absolute;
            top: 50%;
            right: -18px;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 1rem;
            z-index: 2;
            opacity: .6;
        }

        @media (max-width: 1024px) {
            .process-arrow { display: none; }
        }

        /* ===== 资讯卡片 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            border-radius: var(--radius-lg);
            background: var(--bg-panel);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            border-color: rgba(6, 182, 212, .35);
            box-shadow: var(--glow-primary), var(--shadow-md);
        }

        .news-cover {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }

        .news-card:hover .news-cover img {
            transform: scale(1.06);
        }

        .news-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 18, 32, .85));
        }

        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(11, 18, 32, .72);
            border: 1px solid rgba(6, 182, 212, .35);
            color: var(--primary-light);
            font-size: .76rem;
            font-weight: 600;
            backdrop-filter: blur(6px);
        }

        .news-body {
            padding: 22px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-title {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.45;
            transition: color .3s ease;
        }

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

        .news-desc {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: .78rem;
            color: var(--text-soft);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .news-meta i {
            color: var(--primary);
            font-size: .8rem;
        }

        /* ===== FAQ ===== */
        .faq-wrapper {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(6, 182, 212, .3);
        }

        .faq-item.open {
            border-color: rgba(6, 182, 212, .4);
            box-shadow: 0 0 24px rgba(6, 182, 212, .08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: .98rem;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: color .3s ease;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(6, 182, 212, .1);
            border: 1px solid rgba(6, 182, 212, .25);
            color: var(--primary-light);
            font-size: .75rem;
            transition: transform .35s ease, background .35s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(6, 182, 212, .22);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: .92rem;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid rgba(148, 163, 184, .1);
            margin: 0 24px 0 0;
            padding-left: 0;
        }

        .faq-answer-inner p {
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0 96px;
        }

        .cta-panel {
            position: relative;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(6, 182, 212, .1), rgba(139, 92, 246, .08)), var(--bg-panel);
            border: 1px solid rgba(6, 182, 212, .25);
            padding: 56px 48px;
            text-align: center;
            overflow: hidden;
            backdrop-filter: blur(12px);
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(6, 182, 212, .15), transparent 70%);
            pointer-events: none;
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            bottom: -60%;
            right: -10%;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(139, 92, 246, .16), transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-text {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
            position: relative;
            z-index: 2;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            position: relative;
            z-index: 2;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080e1a;
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: #f8fafc;
            margin-bottom: 14px;
            background: linear-gradient(120deg, #e2e8f0, #f1f5f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .footer-desc {
            font-size: .9rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col-title {
            font-size: .95rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: .88rem;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .82rem;
            color: var(--text-soft);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container-custom { padding: 0 20px; }

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

            .security-media { grid-column: span 12; }
            .security-features { grid-column: span 12; }

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

        @media (max-width: 768px) {
            body { font-size: 15px; }

            .header-inner { min-height: 66px; }
            .logo-text { font-size: 1rem; }
            .logo-icon { width: 36px; height: 36px; font-size: .9rem; }

            .menu-toggle { display: flex; }
            .header-actions .btn { display: none; }

            .nav-wrapper {
                position: fixed;
                top: 66px;
                left: 0;
                right: 0;
                background: rgba(11, 18, 32, .97);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border);
                padding: 16px 20px;
                display: flex;
                flex-direction: column;
                align-items: stretch;
                transform: translateY(-130%);
                transition: transform .4s cubic-bezier(.4, 0, .2, 1);
                z-index: 99;
            }

            .nav-wrapper.open {
                transform: translateY(0);
            }

            .nav-chips {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }

            .nav-chip {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 18px;
                border-radius: 12px;
                background: rgba(30, 41, 59, .5);
                border-color: var(--border);
            }

            .nav-chip.active {
                background: linear-gradient(135deg, rgba(6, 182, 212, .75), rgba(139, 92, 246, .7));
            }

            .category-hero { padding: 68px 0 52px; }
            .hero-title { font-size: 1.9rem; }
            .hero-desc { font-size: 1rem; }
            .hero-metrics { grid-template-columns: repeat(2, 1fr); }

            .section { padding: 64px 0; }
            .section-head { margin-bottom: 40px; }

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

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

            .logo-text { display: none; }
            .category-hero { padding: 56px 0 44px; }
            .hero-title { font-size: 1.6rem; }
            .hero-metrics { grid-template-columns: 1fr 1fr; }
            .hero-metric { padding: 14px; }
            .hero-metric-num { font-size: 1.4rem; }

            .cta-panel { padding: 40px 24px; }
            .cta-actions .btn { width: 100%; }

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

            .security-media img { min-height: 240px; }
        }

        /* ===== 通用工具 ===== */
        .gradient-text {
            background: linear-gradient(120deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #34d399;
            box-shadow: 0 0 8px rgba(52, 211, 153, .6);
            margin-right: 6px;
            animation: pulse-dot 2s ease infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: .6; transform: scale(.85); }
        }

/* roulang page: category3 */
:root {
            --primary: #00e5ff;
            --primary-rgb: 0, 229, 255;
            --secondary: #7c5cff;
            --secondary-rgb: 124, 92, 255;
            --accent: #ff2d78;
            --accent-rgb: 255, 45, 120;
            --bg-deep: #0a0e17;
            --bg-card: #131a2e;
            --bg-panel: #1a2336;
            --text-main: #e8ecf4;
            --text-muted: #8b94a7;
            --border: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 14, 23, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 72px;
        }

        .logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            padding: 4px;
            border-radius: 40px;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 32px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.07);
        }

        .nav-chip.active {
            color: #0a0e17;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            box-shadow: 0 4px 20px rgba(var(--primary-rgb), 0.25);
        }

        .header-cta {
            white-space: nowrap;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-main);
            transition: all var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 8px;
            padding: 16px 24px 24px;
            border-top: 1px solid var(--border);
            background: rgba(10, 14, 23, 0.97);
        }

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

        .mobile-menu a {
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.03);
            transition: all var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-menu .btn-primary {
            text-align: center;
            margin-top: 6px;
        }

        /* ========== Buttons ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 700;
            color: #0a0e17;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.25);
            transition: all var(--transition);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(var(--primary-rgb), 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.2);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(var(--primary-rgb), 0.4);
            transform: translateY(-2px);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(10, 14, 23, 0.94) 10%, rgba(10, 14, 23, 0.65) 60%, rgba(10, 14, 23, 0.35));
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 24px;
            max-width: 760px;
            margin: 0 auto 0 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.12);
            border: 1px solid rgba(var(--primary-rgb), 0.3);
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        /* ========== Section ========== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.1);
            border: 1px solid rgba(var(--primary-rgb), 0.25);
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ========== Filter Chips ========== */
        .filter-chips {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }

        .filter-chip {
            padding: 10px 22px;
            border-radius: 32px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .filter-chip:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(var(--primary-rgb), 0.3);
        }

        .filter-chip.active {
            color: #0a0e17;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-color: transparent;
            box-shadow: 0 4px 18px rgba(var(--primary-rgb), 0.25);
        }

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

        .announce-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .announce-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(var(--primary-rgb), 0.3);
        }

        .announce-card-image {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

        .announce-card:hover .announce-card-image img {
            transform: scale(1.05);
        }

        .announce-card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 23, 0.6), transparent);
        }

        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

        .announce-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .announce-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .announce-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex: 1;
        }

        .announce-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }

        .announce-card-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
        }

        .card-link:hover {
            gap: 10px;
            color: #fff;
        }

        /* ========== Timeline ========== */
        .timeline {
            max-width: 760px;
            margin: 0 auto;
            position: relative;
            padding-left: 32px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--secondary), transparent);
        }

        .timeline-item {
            position: relative;
            padding: 20px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 24px;
            transition: all var(--transition);
        }

        .timeline-item:hover {
            border-color: rgba(var(--primary-rgb), 0.35);
            transform: translateX(4px);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -27px;
            top: 28px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
        }

        .timeline-time {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
            margin-bottom: 6px;
            display: block;
        }

        .timeline-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

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

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

        .stat-card {
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(var(--primary-rgb), 0.3);
            box-shadow: var(--shadow);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(var(--primary-rgb), 0.3);
        }

        .faq-item-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            transition: all var(--transition);
        }

        .faq-item-question i {
            font-size: 16px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

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

        .faq-item-answer p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .faq-item.active .faq-item-answer {
            max-height: 300px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background-size: cover;
            background-position: center;
            text-align: center;
            padding: 90px 0;
            overflow: hidden;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 23, 0.82);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-content p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: rgba(10, 14, 23, 0.95);
            border-top: 1px solid var(--border);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 10px;
        }

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

            .nav-chips {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 440px;
            }

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

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

            .hero-content {
                padding: 60px 24px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 26px;
            }

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

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

            .filter-chips {
                flex-wrap: nowrap;
                overflow-x: auto;
                justify-content: flex-start;
                padding-bottom: 12px;
            }

            .filter-chip {
                flex-shrink: 0;
            }
        }

        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }

            .hero h1 {
                font-size: 26px;
            }

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

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

            .section-head h2 {
                font-size: 22px;
            }

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

            .logo {
                font-size: 17px;
            }

            .timeline {
                padding-left: 24px;
            }

            .timeline-item {
                padding: 16px 18px;
            }

            .cta-content h2 {
                font-size: 24px;
            }
        }