/* roulang page: index */
:root {
            --tech-blue: #2B7FFF;
            --active-cyan: #00E5B8;
            --reward-amber: #F5A623;
            --page-bg: #060B16;
            --section-alt: #0B1530;
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-border: rgba(255, 255, 255, 0.10);
            --text-title: #EAF2FF;
            --text-body: #A7B6D8;
            --text-muted: #5E6B8E;
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.35);
            --glow-cyan: 0 0 20px rgba(0, 229, 184, 0.35);
            --glow-blue: 0 0 24px rgba(43, 127, 255, 0.4);
            --transition: 0.25s ease;
            --font-num: 'Roboto Mono', 'DIN Alternate', monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .container-fluid {
            max-width: 100%;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding: 80px 0;
        }

        @media (max-width: 640px) {
            .section-pad {
                padding: 56px 0;
            }
        }

        .section-alt {
            background-color: var(--section-alt);
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 184, 0.20);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1240px;
            margin: 0 auto;
            padding: 16px 24px;
            min-height: 72px;
        }

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

        .logo-text {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-title);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-domain {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: var(--font-num);
            padding-top: 4px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }

        .nav-menu .nav-item {
            position: relative;
        }

        .nav-menu .nav-link {
            display: inline-block;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition);
            position: relative;
        }

        .nav-menu .nav-link:hover {
            color: var(--text-title);
            background: rgba(0, 229, 184, 0.08);
        }

        .nav-menu .nav-link.active {
            color: var(--active-cyan);
            font-weight: 600;
        }

        .nav-menu .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--active-cyan);
            border-radius: 2px;
            box-shadow: var(--glow-cyan);
        }

        .nav-mega-trigger {
            cursor: pointer;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            background: none;
            border: none;
            outline: none;
        }

        .nav-mega-trigger:hover,
        .nav-mega-trigger[aria-expanded="true"] {
            color: var(--text-title);
            background: rgba(0, 229, 184, 0.08);
        }

        .nav-mega-trigger i {
            transition: transform var(--transition);
            font-size: 0.75rem;
        }

        .nav-mega-panel {
            position: absolute;
            top: calc(100% + 0px);
            right: 0;
            min-width: 680px;
            background: rgba(6, 11, 22, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(0, 229, 184, 0.20);
            border-top: 2px solid var(--active-cyan);
            border-radius: 0 0 16px 16px;
            box-shadow: var(--shadow-soft);
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.3s ease;
            z-index: 1001;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .nav-mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-col-title {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
        }

        .mega-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mega-links a {
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 0.9rem;
            color: var(--text-body);
            transition: all var(--transition);
            display: block;
        }

        .mega-links a:hover {
            background: rgba(0, 229, 184, 0.10);
            color: var(--text-title);
        }

        .mega-entry-cards {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mega-entry-card {
            padding: 16px;
            border-radius: var(--radius-card);
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            transition: all var(--transition);
            display: block;
        }

        .mega-entry-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
        }

        .mega-entry-card .card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 4px;
        }

        .mega-entry-card .card-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .nav-cta {
            margin-left: 4px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-block;
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.2;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            outline: none;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--tech-blue), var(--active-cyan));
            color: #fff;
            box-shadow: var(--glow-blue);
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 229, 184, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: var(--text-title);
        }

        .btn-outline:hover {
            background: rgba(0, 229, 184, 0.10);
            border-color: var(--active-cyan);
        }

        .btn:focus-visible {
            outline: 2px solid var(--active-cyan);
            outline-offset: 3px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-title);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* 移动端导航 */
        .mobile-nav {
            display: none;
            background: var(--page-bg);
            border-top: 1px solid rgba(0, 229, 184, 0.15);
            padding: 12px 20px 16px;
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav .mobile-nav-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav .mobile-link {
            padding: 12px 14px;
            font-size: 0.95rem;
            color: var(--text-body);
            border-radius: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all var(--transition);
        }

        .mobile-nav .mobile-link:hover {
            background: rgba(0, 229, 184, 0.08);
            color: var(--text-title);
        }

        .mobile-nav .mobile-link.active {
            color: var(--active-cyan);
            font-weight: 600;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(6, 11, 22, 0.4) 0%, rgba(6, 11, 22, 0.75) 50%, var(--page-bg) 100%);
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1240px;
            margin: 0 auto;
            width: 100%;
            padding: 40px 24px;
        }

        .glass-panel {
            max-width: 640px;
            background: rgba(6, 11, 22, 0.55);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 24px;
            padding: 44px;
            box-shadow: var(--shadow-soft);
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            white-space: normal;
            overflow-wrap: break-word;
        }

        .hero h1 .brand-highlight {
            white-space: nowrap;
            display: inline;
            background: linear-gradient(90deg, var(--active-cyan), var(--tech-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-body);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .hero-brand-row {
            display: flex;
            align-items: baseline;
            gap: 12px;
            margin-bottom: 24px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-brand-name {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-title);
        }

        .hero-brand-domain {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-family: var(--font-num);
        }

        .hero-ctas {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .hero-trust {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .trust-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-body);
        }

        .trust-badge i {
            color: var(--active-cyan);
            font-size: 0.9rem;
        }

        /* 板块标题 */
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-header p {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1rem;
            color: var(--text-body);
        }

        .section-sub-badge {
            display: inline-block;
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--active-cyan);
            background: rgba(0, 229, 184, 0.08);
            border-radius: var(--radius-btn);
            margin-bottom: 16px;
            letter-spacing: 0.05em;
        }

        /* 玩法卡片 */
        .play-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .play-card {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .play-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--tech-blue), var(--active-cyan));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .play-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
            transform: translateY(-4px);
        }

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

        .play-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            background: linear-gradient(135deg, rgba(43, 127, 255, 0.15), rgba(0, 229, 184, 0.15));
            border: 1px solid rgba(0, 229, 184, 0.25);
            color: var(--active-cyan);
            margin-bottom: 20px;
        }

        .play-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .play-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .play-card .card-link {
            font-size: 0.85rem;
            color: var(--active-cyan);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        @media (max-width: 1024px) {
            .play-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .play-cards {
                grid-template-columns: 1fr;
            }
        }

        /* 奖励预览 */
        .reward-scroll {
            overflow-x: auto;
            padding-bottom: 20px;
        }

        .reward-grid {
            display: flex;
            gap: 20px;
            min-width: max-content;
        }

        .reward-card {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            min-width: 220px;
            transition: all var(--transition);
            position: relative;
            flex: 0 0 auto;
        }

        .reward-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
            transform: translateY(-4px);
        }

        .reward-tier {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: var(--radius-btn);
            letter-spacing: 0.05em;
            margin-bottom: 18px;
        }

        .tier-amber {
            background: rgba(245, 166, 35, 0.12);
            color: var(--reward-amber);
            border: 1px solid rgba(245, 166, 35, 0.3);
        }

        .tier-cyan {
            background: rgba(0, 229, 184, 0.10);
            color: var(--active-cyan);
            border: 1px solid rgba(0, 229, 184, 0.25);
        }

        .tier-purple {
            background: rgba(155, 89, 255, 0.12);
            color: #9B59FF;
            border: 1px solid rgba(155, 89, 255, 0.25);
        }

        .reward-name {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .reward-amount {
            font-size: 2rem;
            font-weight: 700;
            font-family: var(--font-num);
            color: var(--reward-amber);
            letter-spacing: 0.05em;
            margin-bottom: 8px;
            line-height: 1.2;
        }

        .reward-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        /* 任务进度 */
        .task-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: stretch;
        }

        .steps-tracker {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 16px;
        }

        .step-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-radius: var(--radius-card);
            border: 1px solid var(--card-border);
            transition: all var(--transition);
        }

        .step-done {
            border-color: rgba(0, 229, 184, 0.3);
            background: rgba(0, 229, 184, 0.04);
        }

        .step-done .step-icon {
            background: var(--active-cyan);
            color: #060B16;
            box-shadow: var(--glow-cyan);
        }

        .step-current {
            border-color: rgba(43, 127, 255, 0.4);
            background: rgba(43, 127, 255, 0.06);
        }

        .step-current .step-icon {
            background: linear-gradient(135deg, var(--tech-blue), var(--active-cyan));
            color: #fff;
            animation: pulse 2s ease-in-out infinite;
        }

        .step-pending {
            border: 1px dashed rgba(255, 255, 255, 0.15);
            opacity: 0.6;
        }

        @keyframes pulse {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(43, 127, 255, 0.3);
            }
            50% {
                box-shadow: 0 0 26px rgba(0, 229, 184, 0.6);
            }
        }

        .step-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .step-info {
            flex: 1;
        }

        .step-info .step-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-title);
        }

        .step-info .step-text {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .task-card-main {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .task-card-main::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 80%;
            height: 80%;
            background: radial-gradient(circle, rgba(43, 127, 255, 0.15), transparent 70%);
            pointer-events: none;
        }

        .task-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(0, 229, 184, 0.08);
            border: 1px solid rgba(0, 229, 184, 0.2);
            color: var(--active-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            margin-bottom: 20px;
            align-self: flex-start;
        }

        .task-name {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 20px;
        }

        .task-progress-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .task-progress-value {
            font-size: 1.5rem;
            font-weight: 700;
            font-family: var(--font-num);
            color: var(--text-title);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .progress-track {
            height: 10px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 999px;
            overflow: hidden;
            margin-bottom: 20px;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--tech-blue), var(--active-cyan));
            border-radius: 999px;
            box-shadow: var(--glow-cyan);
            transition: width 0.6s ease;
        }

        .task-next-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .task-next-value {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--reward-amber);
            margin-bottom: 20px;
        }

        @media (max-width: 1024px) {
            .task-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* CMS 列表 */
        .cms-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .cms-card {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 24px;
            display: flex;
            gap: 20px;
            transition: all var(--transition);
        }

        .cms-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
            transform: translateY(-2px);
        }

        .cms-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            background-image: url('/assets/images/coverpic/cover-1.png');
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }

        .cms-body {
            flex: 1;
            overflow: hidden;
        }

        .cms-body h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 6px;
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .cms-summary {
            font-size: 0.85rem;
            color: var(--text-body);
            margin-bottom: 10px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .cms-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
        }

        .badge {
            display: inline-block;
            padding: 3px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            background: rgba(0, 229, 184, 0.10);
            color: var(--active-cyan);
            border: 1px solid rgba(0, 229, 184, 0.2);
        }

        .badge-amber {
            background: rgba(245, 166, 35, 0.10);
            color: var(--reward-amber);
            border-color: rgba(245, 166, 35, 0.25);
        }

        .cms-date {
            font-family: var(--font-num);
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        .empty-tip {
            grid-column: 1 / -1;
            padding: 40px;
            text-align: center;
            color: var(--text-muted);
            background: var(--card-bg);
            border: 1px dashed var(--card-border);
            border-radius: var(--radius-card);
            font-size: 0.9rem;
        }

        @media (max-width: 640px) {
            .cms-grid {
                grid-template-columns: 1fr;
            }

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

            .cms-thumb {
                width: 100%;
                height: 140px;
            }
        }

        /* FAQ */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 184, 0.25);
        }

        .faq-item[open] {
            border-color: rgba(0, 229, 184, 0.3);
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-title);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
            list-style: none;
            outline: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(0, 229, 184, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--active-cyan);
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .faq-item[open] summary .faq-icon {
            background: var(--active-cyan);
            color: #060B16;
            transform: rotate(45deg);
        }

        .faq-item[open] summary {
            border-left: 2px solid var(--active-cyan);
            background: rgba(0, 229, 184, 0.04);
        }

        .faq-answer {
            padding: 4px 24px 20px;
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.75;
        }

        /* CTA */
        .cta-banner {
            position: relative;
            background: linear-gradient(135deg, var(--section-alt), #0E1B3A);
            border-radius: 20px;
            padding: 56px;
            overflow: hidden;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 32px;
            border: 1px solid rgba(0, 229, 184, 0.15);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--active-cyan), transparent);
            opacity: 0.4;
        }

        .cta-banner h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .cta-banner p {
            color: var(--text-body);
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 40px 28px;
            }
        }

        /* 页脚 */
        .site-footer {
            background: #050A14;
            border-top: 1px solid rgba(0, 229, 184, 0.15);
            padding: 64px 0 0;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-logo {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 6px;
        }

        .footer-domain {
            font-size: 0.85rem;
            font-family: var(--font-num);
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
        }

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

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: all var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* 响应式导航 */
        @media (max-width: 1024px) {
            .nav-menu .nav-link,
            .nav-mega-trigger {
                padding: 10px 12px;
                font-size: 0.88rem;
            }

            .logo-domain {
                display: none;
            }
        }

        @media (max-width: 820px) {
            .nav-menu {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: block;
            }

            .nav-mega-panel {
                position: static;
                min-width: 0;
                grid-template-columns: 1fr;
                box-shadow: none;
                border-radius: 0;
                border-left: none;
                border-right: none;
                padding: 16px 12px;
            }
        }

        @media (max-width: 640px) {
            .nav-wrap {
                padding: 14px 16px;
            }

            .logo-text {
                font-size: 1rem;
            }

            .glass-panel {
                padding: 28px 20px;
            }

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

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

        .skip-link {
            position: absolute;
            left: -9999px;
            top: 0;
            background: var(--active-cyan);
            color: #060B16;
            padding: 8px 16px;
            z-index: 2000;
            border-radius: 0 0 8px 0;
            font-weight: 600;
        }

        .skip-link:focus {
            left: 0;
        }

        .section-divider {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 184, 0.25), transparent);
        }

/* roulang page: article */
:root {
            --primary: #2B7FFF;
            --primary-deep: #1B5FCC;
            --cyan: #00E5B8;
            --amber: #F5A623;
            --bg: #060B16;
            --section-alt: #0B1530;
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-border: rgba(255, 255, 255, 0.10);
            --text-title: #EAF2FF;
            --text-body: #A7B6D8;
            --text-muted: #5E6B8E;
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.35);
            --glow-cyan: 0 0 20px rgba(0, 229, 184, 0.35);
            --glow-blue: 0 0 24px rgba(43, 127, 255, 0.4);
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: inline-block;
            vertical-align: middle;
        }

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

        a:hover {
            color: #fff;
        }

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

        ul,
        ol {
            list-style-position: inside;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 184, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 10px;
            flex-shrink: 0;
            line-height: 1.2;
        }

        .logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-title);
            letter-spacing: 0.02em;
        }

        .logo-domain {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: "Roboto Mono", "DIN Alternate", monospace;
            letter-spacing: 0.05em;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 10px;
            color: var(--text-title);
            font-size: 1.25rem;
            background: rgba(255, 255, 255, 0.04);
            transition: border-color var(--transition), background var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--cyan);
            background: rgba(0, 229, 184, 0.08);
        }

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

        .nav-item {
            position: relative;
            display: flex;
            align-items: center;
            height: 72px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-btn);
            transition: color var(--transition), background var(--transition), box-shadow var(--transition);
        }

        .nav-link:hover {
            color: var(--text-title);
            background: rgba(0, 229, 184, 0.08);
            box-shadow: inset 0 -2px 0 var(--cyan);
        }

        .nav-link.active {
            color: var(--text-title);
            background: rgba(0, 229, 184, 0.06);
            box-shadow: inset 0 -2px 0 var(--cyan);
            text-shadow: 0 0 18px rgba(0, 229, 184, 0.3);
        }

        .nav-mega-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-btn);
            transition: color var(--transition), background var(--transition), border-color var(--transition);
        }

        .nav-mega-trigger i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }

        .nav-mega-trigger:hover,
        .nav-mega-trigger[aria-expanded="true"] {
            color: var(--text-title);
            background: rgba(0, 229, 184, 0.08);
        }

        .nav-mega-panel {
            position: fixed;
            top: 73px;
            left: 0;
            right: 0;
            z-index: 999;
            display: grid;
            grid-template-columns: 1fr 1.6fr;
            gap: 40px;
            max-width: 760px;
            margin: 0 auto;
            padding: 28px 34px;
            background: rgba(6, 11, 22, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(0, 229, 184, 0.25);
            border-top: 2px solid var(--cyan);
            border-radius: 0 0 20px 20px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 40px rgba(0, 229, 184, 0.12);
            visibility: hidden;
            opacity: 0;
            transform: translateY(-10px);
            transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
        }

        .nav-mega-panel.open {
            visibility: visible;
            opacity: 1;
            transform: translateY(0);
        }

        .mega-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--cyan);
            letter-spacing: 0.08em;
            margin-bottom: 14px;
        }

        .mega-links {
            list-style: none;
            display: grid;
            gap: 4px;
        }

        .mega-links a {
            display: block;
            padding: 8px 12px;
            font-size: 0.92rem;
            color: var(--text-body);
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
        }

        .mega-links a:hover {
            background: rgba(0, 229, 184, 0.10);
            color: var(--text-title);
        }

        .mega-entry-cards {
            display: grid;
            gap: 14px;
        }

        .mega-entry-card {
            display: block;
            padding: 16px 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
        }

        .mega-entry-card:hover {
            border-color: rgba(0, 229, 184, 0.35);
            background: rgba(0, 229, 184, 0.06);
            box-shadow: var(--glow-cyan);
        }

        .mega-entry-card .card-title {
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 6px;
            font-size: 0.98rem;
        }

        .mega-entry-card .card-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            min-height: 44vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 140px 0 70px;
            margin-top: 72px;
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(6, 11, 22, 0.88) 0%, rgba(6, 11, 22, 0.55) 45%, var(--bg) 100%);
            z-index: 1;
        }

        .article-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--cyan);
            background: rgba(0, 229, 184, 0.10);
            border: 1px solid rgba(0, 229, 184, 0.25);
            border-radius: var(--radius-btn);
            letter-spacing: 0.05em;
            margin-bottom: 22px;
            backdrop-filter: blur(10px);
        }

        .article-hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.35;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
        }

        .article-hero .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-body);
            margin-bottom: 0;
        }

        /* ===== 面包屑 + 元信息 ===== */
        .article-header {
            position: relative;
            z-index: 3;
            padding: 32px 0 0;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

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

        .breadcrumb .divider {
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb .current {
            color: var(--text-body);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 420px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 24px;
            padding: 18px 24px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            margin-bottom: 36px;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-body);
        }

        .meta-item i {
            color: var(--cyan);
            font-size: 0.8rem;
        }

        .meta-category {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--cyan);
            background: rgba(0, 229, 184, 0.10);
            border: 1px solid rgba(0, 229, 184, 0.2);
            border-radius: var(--radius-btn);
        }

        /* ===== 正文阅读区 ===== */
        .article-main {
            position: relative;
            z-index: 3;
            padding: 0 0 20px;
        }

        .article-body-wrap {
            max-width: 720px;
            margin: 0 auto;
        }

        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-body);
        }

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

        .article-body > p:first-of-type {
            font-size: 1.08rem;
            color: #c0ceea;
        }

        .article-body h2 {
            font-size: clamp(1.35rem, 2.4vw, 1.7rem);
            font-weight: 700;
            color: var(--text-title);
            margin: 2em 0 0.8em;
            padding-left: 14px;
            border-left: 3px solid var(--cyan);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 1.18rem;
            font-weight: 600;
            color: var(--text-title);
            margin: 1.8em 0 0.6em;
        }

        .article-body img {
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-soft);
            margin: 1.8em 0;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1em;
            margin-bottom: 1.5em;
        }

        .article-body li {
            margin-bottom: 0.5em;
            padding-left: 8px;
        }

        .article-body blockquote {
            position: relative;
            margin: 1.8em 0;
            padding: 18px 22px;
            background: rgba(43, 127, 255, 0.08);
            border: 1px solid rgba(43, 127, 255, 0.25);
            border-left: 3px solid var(--primary);
            border-radius: 12px;
            color: var(--text-body);
            font-style: normal;
        }

        .article-body blockquote::before {
            content: "\201C";
            position: absolute;
            top: 4px;
            left: 12px;
            font-size: 2.4rem;
            color: rgba(43, 127, 255, 0.35);
            font-family: Georgia, serif;
        }

        .article-body a {
            color: var(--cyan);
            border-bottom: 1px solid rgba(0, 229, 184, 0.4);
        }

        .article-body a:hover {
            color: #fff;
            border-bottom-color: #fff;
        }

        .article-body hr {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 184, 0.4), transparent);
            margin: 2.5em 0;
        }

        .article-empty {
            padding: 80px 32px;
            text-align: center;
            background: var(--card-bg);
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
        }

        .article-empty .empty-icon {
            font-size: 2.6rem;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

        .article-empty p {
            font-size: 1.05rem;
            color: var(--text-body);
            margin-bottom: 20px;
        }

        .article-back {
            max-width: 720px;
            margin: 40px auto 0;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
        }

        .article-back a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 11px 26px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-title);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }

        .article-back a:hover {
            border-color: var(--cyan);
            background: rgba(0, 229, 184, 0.08);
            box-shadow: var(--glow-cyan);
            color: var(--text-title);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 72px 0 40px;
            background: var(--section-alt);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-eyebrow {
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            color: var(--cyan);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan), var(--shadow-soft);
        }

        .related-cover {
            position: relative;
            height: 170px;
            overflow: hidden;
        }

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

        .related-cover::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent 55%, rgba(6, 11, 22, 0.85) 100%);
        }

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

        .related-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-body h3 {
            font-size: 1.12rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .related-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--cyan);
            transition: gap var(--transition), color var(--transition);
        }

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

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            position: relative;
            padding: 72px 0;
            background: linear-gradient(135deg, #0B1530 0%, #091126 100%);
            overflow: hidden;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 184, 0.5), transparent);
            transform: translateY(-50%);
        }

        .cta-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .cta-inner h2 {
            font-size: clamp(1.4rem, 2.6vw, 2rem);
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .cta-inner p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin: 0;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 13px 32px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            box-shadow: var(--glow-blue);
            border: none;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-deep), var(--cyan));
            box-shadow: var(--glow-blue), var(--glow-cyan);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: var(--text-title);
            border: 1px solid rgba(255, 255, 255, 0.35);
        }

        .btn-outline:hover {
            background: rgba(0, 229, 184, 0.10);
            border-color: var(--cyan);
            color: var(--text-title);
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .nav-mega-trigger:focus-visible,
        .related-link:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 3px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #050A14;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 44px;
        }

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-title);
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }

        .footer-domain {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-family: "Roboto Mono", monospace;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 260px;
        }

        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--cyan);
            margin-bottom: 16px;
            letter-spacing: 0.06em;
        }

        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-body);
            transition: color var(--transition), padding-left var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 22px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media screen and (min-width: 1024px) {
            .nav-mega-trigger:hover ~ .nav-mega-panel,
            .nav-item:focus-within .nav-mega-panel,
            .nav-mega-panel:hover,
            .nav-mega-panel.open {
                visibility: visible;
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media screen and (max-width: 1023px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                height: auto;
            }

            .header-inner {
                height: 64px;
                flex-wrap: wrap;
            }

            .nav-toggle {
                display: flex;
            }

            .logo-text {
                font-size: 1rem;
            }

            .logo-domain {
                display: none;
            }

            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                background: rgba(6, 11, 22, 0.97);
                padding: 10px 0 20px;
                border-top: 1px solid rgba(0, 229, 184, 0.2);
            }

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

            .nav-item {
                height: auto;
                display: block;
            }

            .nav-link,
            .nav-mega-trigger {
                width: 100%;
                padding: 14px 16px;
                border-radius: 10px;
                justify-content: flex-start;
            }

            .nav-mega-panel {
                position: static;
                visibility: hidden;
                opacity: 0;
                max-width: none;
                grid-template-columns: 1fr;
                gap: 18px;
                padding: 16px;
                margin-top: 6px;
                border-radius: 14px;
                transform: none;
                display: none;
            }

            .nav-mega-panel.open {
                display: grid;
                visibility: visible;
                opacity: 1;
            }

            .article-hero {
                min-height: 50vh;
                padding: 110px 0 50px;
                margin-top: 64px;
            }

            .article-hero h1 {
                font-size: 1.5rem;
            }

            .article-hero .hero-subtitle {
                font-size: 0.92rem;
            }

            .breadcrumb .current {
                max-width: 220px;
            }

            .article-meta {
                padding: 16px;
                gap: 10px;
            }

            .meta-item {
                font-size: 0.82rem;
            }

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

            .cta-inner {
                flex-direction: column;
                text-align: center;
            }

            .cta-actions {
                justify-content: center;
            }

            .btn {
                width: 100%;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 4px;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --tech-blue: #2B7FFF;
            --active-cyan: #00E5B8;
            --reward-amber: #F5A623;
            --page-bg: #060B16;
            --section-alt: #0B1530;
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-border: rgba(255, 255, 255, 0.10);
            --text-title: #EAF2FF;
            --text-body: #A7B6D8;
            --text-mute: #5E6B8E;
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.35);
            --glow-cyan: 0 0 20px rgba(0, 229, 184, 0.35);
            --glow-blue: 0 0 24px rgba(43, 127, 255, 0.4);
            --transition: 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html,
        body {
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--page-bg);
            color: var(--text-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--active-cyan);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: #5ff7d8;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .brand-keep {
            display: inline-block;
            white-space: nowrap;
        }

        .btn {
            display: inline-block;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .95rem;
            text-align: center;
            transition: all .25s ease;
            cursor: pointer;
            border: 1px solid transparent;
            line-height: 1.5;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--tech-blue), var(--active-cyan));
            color: #fff;
            box-shadow: var(--glow-blue);
        }

        .btn-primary:hover {
            box-shadow: var(--glow-cyan);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, .35);
            color: var(--text-title);
        }

        .btn-outline:hover {
            background: rgba(0, 229, 184, 0.12);
            border-color: var(--active-cyan);
            color: var(--active-cyan);
        }

        .btn-sm {
            padding: 7px 18px;
            font-size: .85rem;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .nav-mega-trigger:focus-visible,
        .menu-toggle:focus-visible,
        details summary:focus-visible {
            outline: 2px solid var(--active-cyan);
            outline-offset: 2px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-title);
            text-align: center;
            margin-bottom: 8px;
            letter-spacing: .01em;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-mute);
            margin-bottom: 40px;
        }

        @media (max-width: 640px) {
            .section-subtitle {
                margin-bottom: 24px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 184, 0.15);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

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

        .logo-text {
            font-size: 1.22rem;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: .02em;
        }

        .logo-domain {
            font-size: .75rem;
            color: var(--text-mute);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-item {
            position: relative;
            display: flex;
            align-items: center;
        }

        .nav-link,
        .nav-mega-trigger {
            position: relative;
            font-size: .95rem;
            font-weight: 500;
            padding: 8px 4px;
            background: none;
            border: none;
            color: var(--text-body);
            cursor: pointer;
            transition: color .2s ease;
        }

        .nav-link:hover,
        .nav-mega-trigger:hover {
            color: var(--active-cyan);
        }

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

        .nav-link.active::after,
        .nav-mega-trigger::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--active-cyan), transparent);
            border-radius: 2px;
        }

        .nav-mega-trigger i {
            margin-left: 6px;
            font-size: .75rem;
            transition: transform .3s ease;
        }

        .nav-mega-panel {
            display: none;
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            width: 560px;
            background: rgba(6, 11, 22, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(0, 229, 184, 0.2);
            border-radius: 16px;
            box-shadow: var(--shadow-soft);
            padding: 22px;
            grid-template-columns: 1fr 1.2fr;
            gap: 22px;
        }

        .nav-mega-panel.open {
            display: grid;
        }

        .nav-mega-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 32px;
            right: 32px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--active-cyan), transparent);
            border-radius: 2px;
        }

        .mega-col-title {
            font-size: .85rem;
            color: var(--text-mute);
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: .06em;
        }

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

        .mega-links li a {
            display: block;
            padding: 8px 10px;
            font-size: .92rem;
            color: var(--text-title);
            border-radius: 8px;
            transition: background .2s ease, color .2s ease;
        }

        .mega-links li a:hover {
            background: rgba(0, 229, 184, 0.10);
            color: var(--active-cyan);
        }

        .mega-entry-cards {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mega-entry-card {
            display: block;
            padding: 14px 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.03);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .mega-entry-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
        }

        .mega-entry-card .card-title {
            color: var(--text-title);
            font-weight: 600;
            margin-bottom: 4px;
            font-size: .95rem;
        }

        .mega-entry-card .card-desc {
            font-size: .85rem;
            color: var(--text-mute);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-title);
            font-size: 1.25rem;
            cursor: pointer;
            padding: 8px;
        }

        @media (max-width: 1024px) {
            .menu-toggle {
                display: block;
            }

            .nav-menu {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: rgba(6, 11, 22, 0.98);
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 229, 184, 0.15);
                display: none;
                box-shadow: var(--shadow-soft);
            }

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

            .nav-item {
                width: 100%;
            }

            .nav-link,
            .nav-mega-trigger {
                width: 100%;
                padding: 12px 8px;
                text-align: left;
                font-size: 1rem;
            }

            .nav-mega-trigger {
                justify-content: space-between;
                display: flex;
                align-items: center;
            }

            .nav-mega-panel {
                position: static;
                width: 100%;
                margin-top: 8px;
                grid-template-columns: 1fr;
                padding: 16px;
                box-shadow: none;
            }

            .nav-mega-panel.open {
                display: grid;
            }
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            position: relative;
            height: 40vh;
            min-height: 320px;
            max-height: 480px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .cat-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 11, 22, 0.75) 0%, rgba(6, 11, 22, 0.55) 40%, rgba(6, 11, 22, 0.95) 100%);
        }

        .cat-hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 0 20px;
        }

        .cat-hero-eyebrow {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 184, 0.12);
            color: var(--active-cyan);
            font-size: .85rem;
            letter-spacing: .12em;
            margin-bottom: 14px;
        }

        .cat-hero h1 {
            color: var(--text-title);
            font-size: clamp(1.4rem, 4.5vw, 2.8rem);
            font-weight: 800;
            margin: 0 0 10px;
            letter-spacing: .01em;
            line-height: 1.3;
        }

        .cat-hero-desc {
            color: var(--text-mute);
            font-size: 1.05rem;
            margin: 0;
        }

        @media (max-width: 640px) {
            .cat-hero {
                height: auto;
                min-height: 300px;
            }

            .cat-hero h1 {
                font-size: 1.4rem;
            }

            .cat-hero-desc {
                font-size: .95rem;
            }
        }

        /* ===== Main Content Area ===== */
        .cat-main {
            padding: 72px 0;
        }

        @media (max-width: 640px) {
            .cat-main {
                padding: 48px 0;
            }
        }

        .left-col .content-block {
            padding: 28px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            margin-bottom: 24px;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .left-col .content-block:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
        }

        .section-title-sm {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 14px;
            letter-spacing: .01em;
        }

        .content-block p {
            margin-bottom: 14px;
        }

        .inline-info-grid {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 18px;
        }

        .inline-info {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 16px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-title);
            font-size: .9rem;
        }

        .inline-icon {
            color: var(--active-cyan);
            font-size: 1.1rem;
        }

        .steps-timeline {
            position: relative;
            margin-top: 22px;
            padding-left: 34px;
        }

        .steps-timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(180deg, var(--active-cyan), rgba(0, 229, 184, 0.1));
        }

        .step-item {
            position: relative;
            padding-bottom: 26px;
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-num {
            position: absolute;
            left: -34px;
            top: 0;
            width: 26px;
            height: 26px;
            border-radius: 8px;
            background: var(--section-alt);
            border: 1px solid rgba(0, 229, 184, 0.3);
            font-family: 'DIN Alternate', 'Roboto Mono', Consolas, monospace;
            color: var(--active-cyan);
            font-size: 1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
        }

        .step-item h3 {
            color: var(--text-title);
            font-size: 1.05rem;
            margin: 0 0 6px;
        }

        .step-item p {
            margin: 0;
            font-size: .95rem;
            color: var(--text-body);
        }

        .content-figure {
            margin: 20px 0 0;
        }

        .content-figure img {
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-soft);
        }

        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: center;
        }

        @media (max-width: 800px) {
            .split-block {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        .split-image img {
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-soft);
        }

        .feature-list {
            margin: 16px 0 0;
            padding-left: 0;
            list-style: none;
        }

        .feature-list li {
            padding: 6px 0;
            color: var(--text-body);
            font-size: .95rem;
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .feature-list li i {
            color: var(--active-cyan);
        }

        /* ===== Sidebar ===== */
        .right-col {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 22px;
            transition: border-color .3s ease;
        }

        .sidebar-card:hover {
            border-color: rgba(0, 229, 184, 0.25);
        }

        .sidebar-card h3 {
            font-size: 1.05rem;
            color: var(--text-title);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .side-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .side-list-item {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 10px;
            border-radius: 12px;
            border: 1px solid transparent;
            transition: background .2s ease, border-color .2s ease;
        }

        .side-list-item:hover {
            background: rgba(0, 229, 184, 0.06);
            border-color: rgba(0, 229, 184, 0.15);
        }

        .side-list-item img {
            width: 70px;
            height: 48px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .side-tag {
            display: inline-block;
            padding: 2px 8px;
            font-size: .7rem;
            border-radius: 999px;
            background: rgba(245, 166, 35, 0.15);
            color: var(--reward-amber);
            margin-right: 6px;
            font-weight: 600;
        }

        .side-title {
            font-size: .85rem;
            color: var(--text-title);
            font-weight: 500;
            line-height: 1.4;
            display: block;
            margin-top: 2px;
        }

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

        .side-info-list li {
            padding: 7px 0;
            font-size: .9rem;
            color: var(--text-body);
            display: flex;
            align-items: baseline;
            gap: 8px;
        }

        .side-info-list li i {
            color: var(--active-cyan);
            font-size: .8rem;
        }

        .side-cta .btn {
            display: block;
            width: 100%;
            margin-bottom: 10px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--section-alt);
            padding: 72px 0;
        }

        @media (max-width: 640px) {
            .faq-section {
                padding: 48px 0;
            }
        }

        .faq-list {
            max-width: 880px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .25s ease;
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 184, 0.25);
        }

        .faq-item summary {
            position: relative;
            padding: 18px 22px;
            cursor: pointer;
            color: var(--text-title);
            font-weight: 500;
            list-style: none;
            display: flex;
            align-items: center;
            transition: background .2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::before {
            content: 'Q';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: rgba(43, 127, 255, 0.15);
            color: var(--tech-blue);
            font-size: .8rem;
            font-weight: 700;
            margin-right: 12px;
            flex-shrink: 0;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            margin-left: auto;
            font-size: .8rem;
            color: var(--text-mute);
            transition: transform .25s ease;
        }

        .faq-item[open] summary {
            border-left: 2px solid var(--active-cyan);
            border-radius: 14px 14px 0 0;
            background: rgba(0, 229, 184, 0.04);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--active-cyan);
        }

        .faq-answer {
            padding: 0 22px 20px 58px;
            color: var(--text-body);
            font-size: .95rem;
            line-height: 1.8;
        }

        @media (max-width: 640px) {
            .faq-answer {
                padding-left: 48px;
            }
        }

        /* ===== Related Activities ===== */
        .related-section {
            padding: 72px 0;
        }

        @media (max-width: 640px) {
            .related-section {
                padding: 48px 0;
            }
        }

        .activity-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .activity-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
            transform: translateY(-4px);
        }

        .card-media {
            position: relative;
            height: 150px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

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

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(6, 11, 22, 0.7);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: var(--active-cyan);
            font-size: .75rem;
            font-weight: 600;
        }

        .card-body {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            color: var(--text-title);
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 8px;
        }

        .card-body p {
            color: var(--text-mute);
            font-size: .9rem;
            margin: 0 0 16px;
            flex: 1;
        }

        .card-body .btn {
            align-self: flex-start;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            position: relative;
            background: var(--section-alt);
            padding: 56px 0;
            overflow: hidden;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            top: 50%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--active-cyan), transparent);
            opacity: .5;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            color: var(--text-title);
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 6px;
        }

        .cta-inner p {
            color: var(--text-mute);
            margin: 0;
        }

        @media (max-width: 640px) {
            .cta-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04070D;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 0;
            color: var(--text-mute);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
        }

        .footer-logo {
            color: var(--text-title);
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .footer-domain {
            color: var(--text-mute);
            font-size: .8rem;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: .9rem;
            line-height: 1.7;
            margin-bottom: 16px;
            color: var(--text-mute);
        }

        .footer-col-title {
            color: var(--text-title);
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

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

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

        .footer-links a {
            color: var(--text-mute);
            font-size: .9rem;
            transition: color .2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
            font-size: .85rem;
            color: var(--text-mute);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                display: flex;
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --tech-blue: #2B7FFF;
            --active-cyan: #00E5B8;
            --reward-amber: #F5A623;
            --page-bg: #060B16;
            --section-alt: #0B1530;
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-border: rgba(255, 255, 255, 0.08);
            --text-title: #EAF2FF;
            --text-body: #A7B6D8;
            --text-muted: #5E6B8E;
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.35);
            --glow-cyan: 0 0 20px rgba(0, 229, 184, 0.35);
            --glow-blue: 0 0 24px rgba(43, 127, 255, 0.4);
            --transition: 0.25s ease;
            --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --font-mono: "Roboto Mono", "DIN Alternate", "SFMono-Regular", Consolas, monospace;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--page-bg);
            color: var(--text-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: #fff;
        }

        ul,
        ol {
            list-style: none;
        }

        button {
            font-family: var(--font-sans);
            cursor: pointer;
            border: none;
            background: none;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-title);
            font-weight: 700;
            line-height: 1.3;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--tech-blue), #00D9E0);
            color: #fff;
            box-shadow: var(--glow-blue);
        }

        .btn-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 229, 184, 0.5);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--text-title);
        }

        .btn-outline:hover {
            background: rgba(0, 229, 184, 0.10);
            border-color: var(--active-cyan);
            color: var(--active-cyan);
            transform: translateY(-2px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--active-cyan);
            outline-offset: 3px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(0, 229, 184, 0.12);
            color: var(--active-cyan);
            border: 1px solid rgba(0, 229, 184, 0.25);
        }

        .badge-amber {
            background: rgba(245, 166, 35, 0.12);
            color: var(--reward-amber);
            border-color: rgba(245, 166, 35, 0.25);
        }

        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 6px;
            font-size: 0.78rem;
            background: rgba(43, 127, 255, 0.14);
            color: #8fb3ff;
            border: 1px solid rgba(43, 127, 255, 0.2);
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 22, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 184, 0.25);
        }

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

        .brand {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            flex-shrink: 0;
        }

        .brand-name {
            font-weight: 800;
            color: var(--text-title);
            font-size: 1.06rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .brand-domain {
            font-family: var(--font-mono);
            font-size: 0.72rem;
            color: var(--text-muted);
            letter-spacing: 0.05em;
        }

        .nav-toggle {
            display: none;
            color: var(--text-title);
            font-size: 1.4rem;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background var(--transition), color var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--active-cyan);
        }

        .nav-toggle:focus-visible {
            outline: 2px solid var(--active-cyan);
            outline-offset: 2px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 10px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            position: relative;
        }

        .nav-link:hover {
            background: rgba(0, 229, 184, 0.08);
            color: var(--active-cyan);
        }

        .nav-link.active {
            color: var(--active-cyan);
            background: rgba(0, 229, 184, 0.07);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: var(--active-cyan);
            box-shadow: var(--glow-cyan);
        }

        .nav-mega-trigger {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 10px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition);
        }

        .nav-mega-trigger:hover,
        .nav-mega-trigger[aria-expanded="true"] {
            background: rgba(0, 229, 184, 0.08);
            color: var(--active-cyan);
        }

        .nav-mega-trigger i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }

        .nav-mega-trigger[aria-expanded="true"] i {
            transform: rotate(180deg);
        }

        .nav-mega-trigger:focus-visible {
            outline: 2px solid var(--active-cyan);
            outline-offset: 2px;
        }

        .nav-mega-panel {
            display: none;
            position: absolute;
            top: calc(100% + 10px);
            right: -10px;
            width: 640px;
            background: rgba(6, 11, 22, 0.96);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(0, 229, 184, 0.22);
            border-top: 2px solid var(--active-cyan);
            border-radius: 14px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
            padding: 24px;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            z-index: 999;
        }

        .nav-mega-panel.open,
        .nav-item:hover .nav-mega-panel {
            display: grid;
        }

        .mega-col-title {
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 14px;
        }

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

        .mega-links a {
            display: block;
            padding: 8px 12px;
            border-radius: 8px;
            color: var(--text-body);
            font-size: 0.92rem;
            transition: background var(--transition), color var(--transition), padding-left var(--transition);
        }

        .mega-links a:hover {
            background: rgba(0, 229, 184, 0.10);
            color: var(--active-cyan);
            padding-left: 18px;
        }

        .mega-entry-cards {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mega-entry-card {
            display: block;
            padding: 16px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .mega-entry-card:hover {
            border-color: rgba(0, 229, 184, 0.35);
            box-shadow: var(--glow-cyan);
            transform: translateY(-2px);
        }

        .mega-entry-card .card-title {
            color: var(--text-title);
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 6px;
        }

        .mega-entry-card .card-desc {
            color: var(--text-muted);
            font-size: 0.82rem;
            line-height: 1.6;
        }

        /* ===== 分类页 Hero ===== */
        .page-hero {
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
            padding: 100px 0 70px;
            background: linear-gradient(180deg, rgba(6, 11, 22, 0.35) 0%, rgba(6, 11, 22, 0.82) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid rgba(0, 229, 184, 0.15);
        }

        .page-hero-inner {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.84rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb i {
            font-size: 0.65rem;
            opacity: 0.6;
        }

        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 3.1rem);
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .nowrap {
            display: inline-block;
            white-space: nowrap;
        }

        .hero-subline {
            font-size: 1.08rem;
            color: #c7d4ef;
            margin-bottom: 32px;
        }

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

        /* ===== 板块间距 ===== */
        .section-block {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--section-alt);
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
        }

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

        .section-head h2 {
            font-size: clamp(1.6rem, 2.5vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-head p {
            max-width: 720px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .center-head {
            text-align: center;
        }

        .center-head p {
            margin: 0 auto;
        }

        /* ===== 双栏主内容区 ===== */
        .content-layout {
            padding-top: 60px;
            padding-bottom: 60px;
        }

        .content-main {
            padding-right: 32px;
        }

        .content-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px;
            margin-bottom: 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-soft);
        }

        .content-card h3 {
            font-size: 1.3rem;
            color: var(--text-title);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .content-card h3 i {
            color: var(--active-cyan);
        }

        .content-card p {
            margin-bottom: 14px;
        }

        .content-card p:last-child {
            margin-bottom: 0;
        }

        .lead-copy {
            font-size: 1.06rem;
            color: #c7d4ef;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 12px;
        }

        .step-item {
            position: relative;
            padding: 24px 18px 18px;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .step-item:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
            transform: translateY(-3px);
        }

        .step-num {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: var(--active-cyan);
            line-height: 1;
            margin-bottom: 12px;
            display: block;
        }

        .step-item h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--text-title);
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 图文复合区 ===== */
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }

        .media-block .media-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-soft);
        }

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

        .media-block .media-img:hover img {
            transform: scale(1.05);
        }

        .media-body h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .media-body p {
            color: var(--text-body);
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .check-list li {
            display: flex;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 0.93rem;
        }

        .check-list i {
            color: var(--active-cyan);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== 侧边栏卡片 ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-soft);
        }

        .side-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .side-card-title i {
            color: var(--active-cyan);
        }

        /* 热门玩法排行 */
        .rank-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 10px;
            border-radius: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background var(--transition), transform var(--transition);
        }

        .rank-list li:last-child {
            border-bottom: none;
        }

        .rank-list li:hover {
            background: rgba(0, 229, 184, 0.06);
            transform: translateX(4px);
        }

        .rank-num {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--tech-blue);
            font-size: 1.2rem;
            width: 32px;
            text-align: center;
        }

        .rank-list li:nth-child(1) .rank-num {
            color: var(--reward-amber);
        }

        .rank-list li:nth-child(2) .rank-num {
            color: #c7d4ef;
        }

        .rank-info {
            flex: 1;
        }

        .rank-info strong {
            display: block;
            color: var(--text-title);
            font-size: 0.93rem;
            font-weight: 600;
        }

        .rank-info span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .rank-arrow {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* 推荐活动卡片 */
        .mini-entry-card {
            display: flex;
            gap: 14px;
            padding: 12px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: border-color var(--transition), box-shadow var(--transition);
            margin-bottom: 12px;
        }

        .mini-entry-card:last-child {
            margin-bottom: 0;
        }

        .mini-entry-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
        }

        .mini-entry-card img {
            width: 80px;
            height: 60px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .mini-entry-body {
            flex: 1;
        }

        .mini-entry-body strong {
            display: block;
            color: var(--text-title);
            font-size: 0.92rem;
            margin-bottom: 4px;
        }

        .mini-entry-body span {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: block;
        }

        /* 信息统计卡 */
        .stat-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .stat-item {
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            padding: 16px 12px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: border-color var(--transition);
        }

        .stat-item:hover {
            border-color: rgba(0, 229, 184, 0.3);
        }

        .stat-num {
            font-family: var(--font-mono);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--active-cyan);
            display: block;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== 相关活动卡片 ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .rel-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

        .rel-card:hover {
            border-color: rgba(0, 229, 184, 0.3);
            box-shadow: var(--glow-cyan);
            transform: translateY(-4px);
        }

        .rel-card .rel-img {
            overflow: hidden;
            height: 180px;
        }

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

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

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

        .rel-body h3 {
            font-size: 1.05rem;
            margin-bottom: 10px;
        }

        .rel-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.7;
            flex: 1;
        }

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

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item[open] {
            border-color: rgba(0, 229, 184, 0.35);
            box-shadow: var(--glow-cyan);
            border-left: 3px solid var(--active-cyan);
        }

        .faq-item summary {
            padding: 18px 24px;
            cursor: pointer;
            color: var(--text-title);
            font-weight: 600;
            font-size: 0.98rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            list-style: none;
            transition: color var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--active-cyan);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item summary:hover {
            color: var(--active-cyan);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-body);
            font-size: 0.93rem;
            line-height: 1.8;
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            background: linear-gradient(135deg, #0B1530 0%, #060B16 100%);
            border-top: 1px solid rgba(0, 229, 184, 0.18);
            border-bottom: 1px solid rgba(0, 229, 184, 0.18);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 184, 0.4), transparent);
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            font-size: clamp(1.4rem, 2.4vw, 2rem);
            margin-bottom: 8px;
        }

        .cta-inner p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #04070E;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 6px;
        }

        .footer-domain {
            font-family: var(--font-mono);
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            letter-spacing: 0.05em;
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 240px;
        }

        .footer-col-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
        }

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color var(--transition), padding-left var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

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

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

            .content-main {
                padding-right: 0;
            }

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

            .nav-menu {
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: rgba(6, 11, 22, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border: 1px solid rgba(0, 229, 184, 0.2);
                border-radius: 14px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                display: none;
                box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
            }

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

            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .nav-link,
            .nav-mega-trigger {
                width: 100%;
                justify-content: flex-start;
            }

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

            .nav-mega-panel {
                position: static;
                width: 100%;
                display: none;
                grid-template-columns: 1fr;
                margin-top: 4px;
                box-shadow: none;
                padding: 16px;
            }

            .nav-mega-panel.open {
                display: grid;
            }

            .nav-item:hover .nav-mega-panel {
                display: none;
            }

            .nav-item:hover .nav-mega-panel.open {
                display: grid;
            }

            .media-block {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 767px) {
            .section-block {
                padding: 56px 0;
            }

            .content-layout {
                padding-top: 40px;
                padding-bottom: 40px;
            }

            .page-hero {
                min-height: 50vh;
                padding: 80px 0 50px;
            }

            .page-hero h1 {
                font-size: clamp(1.6rem, 5vw, 2rem);
            }

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

            .content-card {
                padding: 22px;
            }

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

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

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

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

            .footer-desc {
                max-width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 4px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                text-align: center;
            }

            .cta-inner .btn {
                width: 100%;
            }

            .breadcrumb {
                font-size: 0.78rem;
            }

            .header-inner {
                min-height: 64px;
            }

            .brand-name {
                font-size: 0.95rem;
            }

            .brand-domain {
                font-size: 0.65rem;
            }

            .hero-subline {
                font-size: 0.98rem;
            }
        }

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

            .content-card {
                padding: 18px;
            }

            .faq-answer {
                padding: 0 18px 16px;
            }

            .faq-item summary {
                padding: 16px 18px;
                font-size: 0.92rem;
            }

            .stat-num {
                font-size: 1.2rem;
            }

            .related-grid {
                gap: 16px;
            }

            .sidebar {
                gap: 16px;
            }

            .side-card {
                padding: 18px;
            }
        }