/* roulang page: index */
:root {
            --bg-primary: #060D1F;
            --bg-secondary: #0B1730;
            --bg-tertiary: #111F3D;
            --accent-blue: #3E7BFF;
            --accent-cyan: #00C9A7;
            --text-primary: #EAF1FF;
            --text-secondary: #8BA3C7;
            --text-weak: #5E77A3;
            --border-glass: rgba(115, 155, 255, 0.14);
            --border-hover: rgba(115, 155, 255, 0.28);
            --card-bg: rgba(18, 30, 54, 0.55);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-large: 20px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(62, 123, 255, 0.45);
            --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
        }

        a:hover {
            color: var(--text-primary);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-blue);
            outline-offset: 2px;
        }

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

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .container-1200 {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: 80px 0;
            position: relative;
        }

        .section-title {
            font-size: clamp(1.6rem, 2.5vw, 2.2rem);
            font-weight: 600;
            margin: 0 0 40px;
            letter-spacing: -0.01em;
            position: relative;
            padding-left: 16px;
            color: var(--text-primary);
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 4px;
            height: 28px;
            background: var(--accent-blue);
            border-radius: 4px;
        }

        .section-title.centered {
            text-align: center;
            padding-left: 0;
        }

        .section-title.centered::before {
            display: none;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.15s ease;
            text-align: center;
            line-height: 1;
        }

        .btn i {
            font-size: 1.1em;
        }

        .btn-primary {
            background: var(--accent-blue);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(62, 123, 255, 0.65);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-ghost {
            background: rgba(18, 30, 54, 0.45);
            border: 1px solid rgba(115, 155, 255, 0.3);
            color: var(--text-primary);
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            border-color: rgba(115, 155, 255, 0.6);
            color: var(--text-primary);
            transform: translateY(-2px);
        }

        .btn-lg {
            height: 54px;
            padding: 0 36px;
            font-size: 1.05rem;
        }

        .btn-small {
            height: 36px;
            padding: 0 18px;
            font-size: 0.9rem;
            border-radius: var(--radius-btn);
        }

        /* ---------- Header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 13, 31, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.3s ease;
        }

        .header-brand-row {
            height: 64px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(115, 155, 255, 0.1);
            transition: height 0.3s ease;
        }

        .site-header.header-shrink .header-brand-row {
            height: 48px;
        }

        .brand-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-size: 20px;
            font-weight: 600;
            letter-spacing: -0.01em;
            transition: font-size 0.3s ease;
        }

        .brand-logo:hover {
            color: var(--text-primary);
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(18, 30, 54, 0.55);
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: all 0.15s ease;
        }

        .search-btn:hover {
            border-color: var(--accent-blue);
            color: var(--text-primary);
        }

        .header-channel-row {
            border-bottom: 1px solid rgba(115, 155, 255, 0.1);
            background: rgba(6, 13, 31, 0.6);
        }

        .channel-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .channel-nav {
            display: flex;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 6px 0;
        }

        .channel-nav::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            height: 36px;
            padding: 0 16px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all 0.15s ease;
            border: 1px solid transparent;
        }

        .channel-link:hover {
            background: rgba(62, 123, 255, 0.2);
            color: var(--text-primary);
        }

        .channel-link.active {
            color: var(--text-primary);
            background: rgba(62, 123, 255, 0.18);
            border-color: rgba(0, 201, 167, 0.45);
        }

        .mobile-menu-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: rgba(18, 30, 54, 0.55);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            font-size: 17px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        @media (max-width: 767.98px) {
            .mobile-menu-toggle {
                display: inline-flex;
            }
            .channel-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(6, 13, 31, 0.98);
                flex-direction: column;
                padding: 12px 20px 18px;
                gap: 4px;
                border-bottom: 1px solid var(--border-glass);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .channel-nav.mobile-open {
                display: flex;
            }
            .channel-link {
                width: 100%;
                justify-content: flex-start;
                height: 42px;
                border-radius: 8px;
            }
            .header-brand-row {
                height: 60px;
            }
        }

        /* ---------- Hero ---------- */
        .hero {
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: 60px 0;
            position: relative;
            background:
                linear-gradient(rgba(115, 155, 255, 0.045) 1px, transparent 1px),
                linear-gradient(90deg, rgba(115, 155, 255, 0.045) 1px, transparent 1px),
                radial-gradient(ellipse at 70% 30%, rgba(62, 123, 255, 0.22), transparent 55%),
                var(--bg-primary);
            background-size: 44px 44px, 44px 44px, 100% 100%, 100% 100%;
            overflow: hidden;
        }

        .hero .row {
            align-items: center;
        }

        .hero-content {
            animation: heroFadeIn 0.8s ease-out both;
            padding-right: 20px;
        }

        @keyframes heroFadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: rgba(232, 93, 93, 0.14);
            border: 1px solid rgba(232, 93, 93, 0.4);
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            color: #f0a6a6;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 0.85em;
        }

        .hero h1 {
            font-size: clamp(2.2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin: 0 0 16px;
            color: var(--text-primary);
            line-height: 1.18;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
            margin-bottom: 28px;
        }

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

        .hero-image {
            border-radius: var(--radius-large);
            overflow: hidden;
            border: 1px solid var(--border-hover);
            box-shadow: var(--shadow-hover);
            background: rgba(11, 23, 48, 0.5);
            animation: heroFadeIn 0.8s ease-out 0.15s both;
        }

        .hero-image img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 0;
        }

        /* ---------- Features ---------- */
        .features-section {
            background: var(--bg-secondary);
        }

        .feature-row {
            margin-bottom: 56px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-img {
            border-radius: var(--radius-large);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            background: var(--bg-tertiary);
            min-height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .feature-img img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

        .feature-row:hover .feature-img img {
            transform: scale(1.02);
        }

        .feature-content {
            padding: 20px 0 20px 30px;
        }

        .feature-row:nth-child(even) .feature-content {
            padding: 20px 30px 20px 0;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(62, 123, 255, 0.25), rgba(0, 201, 167, 0.2));
            border: 1px solid rgba(115, 155, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .feature-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 0 0 12px;
            color: var(--text-primary);
        }

        .feature-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 460px;
        }

        /* ---------- Screenshots / Orbit ---------- */
        .screenshots-section {
            background: var(--bg-primary);
        }

        .screenshot-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: 20px;
            padding: 20px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.2s ease, border-color 0.2s ease;
        }

        .screenshot-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .screenshot-img {
            border-radius: 14px;
            overflow: hidden;
            background: var(--bg-tertiary);
            margin-bottom: 16px;
        }

        .screenshot-img img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 0;
        }

        .screenshot-label {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-primary);
            font-weight: 500;
            padding: 6px 0 4px;
        }

        .orbit-controls button {
            background: rgba(18, 30, 54, 0.7);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            border-radius: 50%;
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.15s ease;
            font-size: 14px;
        }

        .orbit-controls button:hover {
            background: rgba(62, 123, 255, 0.3);
            border-color: var(--accent-blue);
        }

        .orbit-bullets {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 28px;
        }

        .orbit-bullets button {
            width: 8px;
            height: 8px;
            border-radius: 999px;
            border: none;
            background: rgba(94, 119, 163, 0.5);
            padding: 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .orbit-bullets button.is-active {
            width: 24px;
            background: var(--accent-blue);
        }

        /* ---------- Requirements ---------- */
        .requirements-section {
            background: url('/assets/images/backpic/back-1.png') center / cover fixed no-repeat, var(--bg-secondary);
            position: relative;
        }

        .requirements-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 13, 31, 0.88);
        }

        .requirements-section .container-1200 {
            position: relative;
            z-index: 1;
        }

        .platform-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 36px;
        }

        .platform-badges span {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(18, 30, 54, 0.55);
            border: 1px solid rgba(0, 201, 167, 0.4);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
        }

        .requirement-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 30px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: box-shadow 0.2s ease, border-color 0.2s ease;
        }

        .requirement-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .requirement-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 0 0 24px;
            color: var(--text-primary);
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(115, 155, 255, 0.12);
        }

        .requirement-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(115, 155, 255, 0.06);
            font-size: 0.9rem;
            line-height: 1.6;
            color: var(--text-secondary);
        }

        .requirement-card ul li:last-child {
            border-bottom: none;
        }

        .requirement-card ul li i {
            color: var(--accent-cyan);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
            width: 20px;
            text-align: center;
        }

        /* ---------- Reviews ---------- */
        .reviews-section {
            background: var(--bg-primary);
        }

        .review-card {
            background: rgba(14, 23, 42, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.2s ease, border-color 0.2s ease;
            position: relative;
        }

        .review-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 120px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            border-radius: 4px;
        }

        .review-card:hover {
            border-color: rgba(0, 201, 167, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .review-stars {
            color: var(--accent-cyan);
            font-size: 15px;
            letter-spacing: 2px;
            margin-bottom: 14px;
        }

        .review-content {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text-secondary);
            flex: 1;
        }

        .review-platform {
            margin-top: 20px;
            font-size: 0.8rem;
            color: var(--text-weak);
            display: block;
        }

        .review-time {
            font-size: 0.75rem;
            color: var(--text-weak);
            display: block;
            margin-top: 4px;
        }

        /* ---------- Download CTA ---------- */
        .download-section {
            background:
                radial-gradient(ellipse at 50% 50%, rgba(62, 123, 255, 0.28), transparent 55%),
                radial-gradient(ellipse at 20% 80%, rgba(0, 201, 167, 0.1), transparent 40%),
                radial-gradient(ellipse at 85% 20%, rgba(6, 13, 31, 0.8), transparent 50%),
                var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
            text-align: center;
        }

        .download-section .section-title {
            text-align: center;
            padding-left: 0;
            margin-bottom: 16px;
        }

        .download-section .section-title::before {
            display: none;
        }

        .download-sub {
            font-size: 0.98rem;
            color: var(--text-secondary);
            margin: 0 0 36px;
        }

        .download-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }

        .download-buttons .btn {
            min-width: 160px;
        }

        .download-note {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-top: 14px;
            letter-spacing: 0.02em;
        }

        .download-note i {
            color: var(--accent-cyan);
            margin-right: 4px;
        }

        /* ---------- News / CMS ---------- */
        .news-section {
            background: var(--bg-primary);
        }

        .news-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid rgba(115, 155, 255, 0.08);
            text-decoration: none;
            transition: background 0.2s ease;
            border-radius: 8px;
        }

        .news-list-item:hover {
            background: rgba(62, 123, 255, 0.05);
        }

        .news-thumb {
            width: 120px;
            height: 80px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-glass);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .news-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .news-cat {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            border-radius: 999px;
            border: 1px solid rgba(0, 201, 167, 0.4);
            color: var(--accent-cyan);
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            width: fit-content;
        }

        .news-title {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--text-primary);
            line-height: 1.4;
            transition: color 0.15s ease;
        }

        .news-list-item:hover .news-title {
            color: var(--accent-blue);
        }

        .news-summary {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0 0 8px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-top: auto;
            font-size: 0.78rem;
            color: var(--text-weak);
        }

        .news-meta a {
            color: var(--text-secondary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.15s ease;
        }

        .news-meta a:hover {
            color: var(--accent-blue);
        }

        .news-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-weak);
        }

        .news-empty i {
            font-size: 44px;
            opacity: 0.5;
            display: block;
            margin-bottom: 14px;
        }

        .news-empty p {
            font-size: 0.95rem;
        }

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

        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .accordion {
            border: none;
            background: transparent;
        }

        .accordion-item {
            background: transparent;
            border: none;
        }

        .accordion-title {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            background: transparent;
            border-bottom: 1px solid rgba(115, 155, 255, 0.1);
            line-height: 52px;
            padding: 0 50px 0 0;
            min-height: 52px;
            position: relative;
            border-radius: 0 !important;
            transition: color 0.15s ease, background 0.15s ease;
        }

        .accordion-title:hover,
        .accordion-title:focus {
            background: rgba(62, 123, 255, 0.08);
            color: var(--text-primary);
        }

        .accordion-title::after {
            content: '\2b';
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--accent-blue);
            transition: transform 0.3s ease;
        }

        .accordion-item.is-active .accordion-title::after {
            content: '\2b';
            transform: translateY(-50%) rotate(45deg);
        }

        .accordion-content {
            background: transparent;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(115, 155, 255, 0.1);
            font-size: 0.88rem;
            line-height: 1.7;
            padding: 0 42px 20px 0 !important;
        }

        .accordion-content p {
            margin: 0;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #040A18;
            border-top: 1px solid rgba(115, 155, 255, 0.12);
            padding-top: 60px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            width: 30px;
            height: 30px;
            font-size: 14px;
        }

        .footer-brand-text {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .site-footer .footer-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 0;
        }

        .footer-nav h4,
        .footer-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 16px;
        }

        .footer-nav ul li,
        .footer-info ul li {
            margin-bottom: 10px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-nav ul li a {
            color: var(--text-secondary);
            font-size: 0.87rem;
            transition: color 0.15s ease;
        }

        .footer-nav ul li a:hover {
            color: var(--text-primary);
        }

        .footer-info ul li i {
            color: var(--accent-cyan);
            width: 18px;
            text-align: center;
            font-size: 14px;
        }

        .footer-bottom {
            margin-top: 50px;
            border-top: 1px solid rgba(115, 155, 255, 0.1);
            padding: 22px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1023.98px) {
            .section {
                padding: 64px 0;
            }
            .feature-content {
                padding: 16px 0;
            }
            .feature-row:nth-child(even) .feature-content {
                padding: 16px 0;
            }
            .news-thumb {
                width: 96px;
                height: 64px;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 50px 0;
            }
            .section-title {
                margin-bottom: 28px;
                font-size: 1.4rem;
            }
            .hero {
                padding: 40px 0;
                min-height: auto;
            }
            .hero-content {
                padding-right: 0;
                margin-bottom: 30px;
                text-align: center;
            }
            .hero-actions {
                justify-content: center;
            }
            .brand-actions .search-btn {
                display: none;
            }
            .brand-logo {
                font-size: 17px;
            }
            .download-buttons .btn {
                width: 100%;
                max-width: 260px;
            }
            .news-list-item {
                gap: 14px;
            }
        }

        @media (max-width: 520px) {
            .container-1200 {
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 15px;
            }
            .json-btn {
                display: none !important;
            }
            .news-thumb {
                width: 84px;
                height: 56px;
            }
            .news-title {
                font-size: 0.92rem;
            }
            .news-summary {
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #060D1F;
            --bg-block: #0B1730;
            --bg-elev: #111F3D;
            --accent-blue: #3E7BFF;
            --accent-green: #00C9A7;
            --accent-red: #E85D5D;
            --text-main: #EAF1FF;
            --text-sub: #8BA3C7;
            --text-weak: #5E77A3;
            --glass-bg: rgba(18, 30, 54, 0.55);
            --glass-border: rgba(115, 155, 255, 0.14);
            --border-light: rgba(115, 155, 255, 0.1);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-large: 20px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.45);
            --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--text-main);
        }

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

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

        .container-1200 {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .row {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 26px;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            font-weight: 600;
            transition: all 0.15s ease;
            border: 1px solid transparent;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-blue);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--accent-blue);
            color: #fff;
            box-shadow: 0 0 18px rgba(62, 123, 255, 0.45);
        }

        .btn-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(62, 123, 255, 0.65);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(115, 155, 255, 0.3);
            color: var(--text-main);
        }

        .btn-ghost:hover {
            border-color: rgba(115, 155, 255, 0.6);
            color: var(--text-main);
            transform: translateY(-2px);
        }

        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 0.85rem;
            border-radius: 6px;
        }

        .btn-light {
            background: #fff;
            color: #0B1730;
        }

        .btn-light:hover {
            color: #0B1730;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.18);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-green {
            color: var(--accent-green);
            border: 1px solid rgba(0, 201, 167, 0.4);
            background: rgba(0, 201, 167, 0.08);
        }

        .badge-blue {
            color: var(--accent-blue);
            border: 1px solid rgba(62, 123, 255, 0.4);
            background: rgba(62, 123, 255, 0.08);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 13, 31, 0.96);
            backdrop-filter: blur(12px);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

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

        .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--accent-blue), #1B4DB8);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 0 16px rgba(62, 123, 255, 0.45);
        }

        .brand-text {
            font-size: 1.2rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            color: var(--text-main);
            white-space: nowrap;
        }

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

        .icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(115, 155, 255, 0.16);
            color: var(--text-sub);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.15s ease;
        }

        .icon-btn:hover {
            color: var(--text-main);
            border-color: rgba(115, 155, 255, 0.4);
            background: rgba(62, 123, 255, 0.12);
        }

        .nav-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            border: 1px solid rgba(115, 155, 255, 0.2);
            color: var(--text-main);
            font-size: 16px;
            align-items: center;
            justify-content: center;
        }

        .channel-nav {
            border-top: 1px solid var(--border-light);
            background: rgba(6, 13, 31, 0.94);
        }

        .channel-nav .container-1200 {
            display: flex;
            align-items: center;
            gap: 4px;
            min-height: 48px;
        }

        .channel-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 0 16px;
            height: 36px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-sub);
            transition: all 0.15s ease;
            white-space: nowrap;
        }

        .channel-link:hover {
            background: rgba(62, 123, 255, 0.2);
            color: #fff;
        }

        .channel-link.active {
            color: #fff;
            background: rgba(62, 123, 255, 0.18);
            border: 1px solid rgba(0, 201, 167, 0.5);
            font-weight: 600;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 72px 0 64px;
            position: relative;
            background:
                linear-gradient(rgba(115, 155, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(115, 155, 255, 0.05) 1px, transparent 1px);
            background-size: 36px 36px;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(62, 123, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-weak);
            margin-bottom: 28px;
        }

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

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: var(--text-weak);
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: var(--text-sub);
        }

        .page-hero h1 {
            font-size: clamp(2.2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .page-hero .hero-desc {
            max-width: 720px;
            font-size: 1.05rem;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        /* ===== Sys Banner ===== */
        .sys-banner {
            position: relative;
            border-radius: var(--radius-large);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            margin: 0 0 72px;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
        }

        .sys-banner-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .sys-banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 13, 31, 0.15) 0%, rgba(6, 13, 31, 0.72) 100%);
        }

        .sys-banner-content {
            position: relative;
            z-index: 2;
            padding: 40px;
            max-width: 620px;
        }

        .sys-banner-content h2 {
            font-size: clamp(1.6rem, 2.5vw, 2.2rem);
            font-weight: 600;
            margin: 14px 0 10px;
            color: var(--text-main);
        }

        .sys-banner-content p {
            font-size: 0.95rem;
            color: var(--text-sub);
        }

        /* ===== Section ===== */
        .section-block {
            padding: 64px 0 80px;
        }

        .section-block.alt-bg {
            background: var(--bg-block);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .section-head .bar {
            width: 4px;
            height: 22px;
            border-radius: 4px;
            background: var(--accent-blue);
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 600;
            color: var(--text-main);
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 0.95rem;
            max-width: 640px;
            margin-bottom: 36px;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 30px 26px;
            backdrop-filter: blur(14px);
            position: relative;
            overflow: hidden;
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
            height: 100%;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 120px;
            height: 2px;
            background: var(--accent-green);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(115, 155, 255, 0.28);
        }

        .feature-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 13px;
            background: rgba(62, 123, 255, 0.12);
            border: 1px solid rgba(62, 123, 255, 0.3);
            color: var(--accent-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .feature-card.green .card-icon {
            background: rgba(0, 201, 167, 0.1);
            border-color: rgba(0, 201, 167, 0.3);
            color: var(--accent-green);
        }

        .feature-card.blue .card-icon {
            background: rgba(62, 123, 255, 0.12);
            border-color: rgba(62, 123, 255, 0.3);
            color: var(--accent-blue);
        }

        .feature-card.purple .card-icon {
            background: rgba(140, 110, 255, 0.12);
            border-color: rgba(140, 110, 255, 0.3);
            color: #8C6EFF;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* ===== Config Panels ===== */
        .config-panel {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px;
            backdrop-filter: blur(14px);
            height: 100%;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .config-panel:hover {
            border-color: rgba(115, 155, 255, 0.28);
            box-shadow: var(--shadow-hover);
        }

        .config-panel .panel-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 22px;
        }

        .config-panel .panel-title i {
            color: var(--accent-blue);
            font-size: 18px;
        }

        .config-panel.recommend .panel-title i {
            color: var(--accent-green);
        }

        .config-list {
            list-style: none;
            margin: 0;
        }

        .config-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 11px 0;
            border-bottom: 1px solid rgba(115, 155, 255, 0.08);
        }

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

        .config-list .item-label {
            min-width: 96px;
            font-size: 0.82rem;
            color: var(--text-weak);
            flex-shrink: 0;
            padding-top: 2px;
        }

        .config-list .item-value {
            font-size: 0.92rem;
            color: var(--text-main);
        }

        .config-list .item-value small {
            display: block;
            font-size: 0.76rem;
            color: var(--text-weak);
            margin-top: 2px;
        }

        /* ===== Notice List ===== */
        .notice-card {
            background: rgba(18, 30, 54, 0.4);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            height: 100%;
            transition: transform 0.2s ease, border-color 0.2s ease;
        }

        .notice-card:hover {
            transform: translateY(-3px);
            border-color: rgba(115, 155, 255, 0.26);
        }

        .notice-card .notice-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(0, 201, 167, 0.1);
            border: 1px solid rgba(0, 201, 167, 0.28);
            color: var(--accent-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
        }

        .notice-card h4 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .notice-card p {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* ===== CTA ===== */
        .cta-strip {
            position: relative;
            padding: 56px 0;
            background: var(--bg-block);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
        }

        .cta-strip::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 240px;
            background: radial-gradient(ellipse, rgba(62, 123, 255, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-strip .container-1200 {
            position: relative;
            text-align: center;
        }

        .cta-strip h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .cta-strip p {
            color: var(--text-sub);
            margin-bottom: 26px;
            font-size: 0.95rem;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #040A18;
            border-top: 1px solid rgba(115, 155, 255, 0.12);
            padding-top: 56px;
        }

        .site-footer .row {
            margin-bottom: 36px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            font-size: 14px;
        }

        .footer-brand-text {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 300px;
        }

        .site-footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 0.88rem;
            color: var(--text-sub);
        }

        .site-footer ul li a {
            color: var(--text-sub);
        }

        .site-footer ul li a:hover {
            color: var(--text-main);
        }

        .site-footer ul li i {
            margin-right: 8px;
            color: var(--text-weak);
            font-size: 0.8rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(115, 155, 255, 0.08);
            padding: 18px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1023.98px) {
            .section-block {
                padding: 52px 0 60px;
            }

            .sys-banner {
                min-height: 280px;
            }
        }

        @media screen and (max-width: 767.98px) {
            .header-inner {
                height: 60px;
            }

            .brand-text {
                font-size: 1.05rem;
            }

            .channel-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                background: rgba(6, 13, 31, 0.98);
                border-bottom: 1px solid var(--glass-border);
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
            }

            .channel-nav.open {
                max-height: 400px;
            }

            .channel-nav .container-1200 {
                flex-direction: column;
                align-items: stretch;
                padding: 14px 20px;
                min-height: 0;
                gap: 2px;
            }

            .channel-link {
                display: flex;
                justify-content: center;
                padding: 12px 16px;
                height: auto;
                border-radius: 10px;
                border-bottom: 1px solid rgba(115, 155, 255, 0.06);
                font-size: 0.95rem;
            }

            .channel-link:last-child {
                border-bottom: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .page-hero {
                padding: 48px 0 48px;
            }

            .page-hero h1 {
                font-size: 1.9rem;
            }

            .page-hero .hero-desc {
                font-size: 0.95rem;
            }

            .sys-banner {
                min-height: 220px;
                border-radius: 16px;
                margin-bottom: 48px;
            }

            .sys-banner-content {
                padding: 24px;
            }

            .sys-banner-content h2 {
                font-size: 1.4rem;
            }

            .sys-banner-content p {
                font-size: 0.85rem;
            }

            .section-block {
                padding: 40px 0 48px;
            }

            .feature-card {
                padding: 24px 20px;
            }

            .config-panel {
                padding: 24px 20px;
                margin-bottom: 20px;
            }

            .cta-strip {
                padding: 44px 0;
            }

            .cta-btns {
                flex-direction: column;
                align-items: center;
            }

            .cta-btns .btn {
                width: 100%;
                max-width: 320px;
            }

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

            .site-footer .columns {
                margin-bottom: 28px;
            }
        }

        @media screen and (max-width: 519.98px) {
            .container-1200 {
                padding-left: 16px;
                padding-right: 16px;
            }

            .page-hero {
                padding: 40px 0;
            }

            .hero-tags .badge {
                font-size: 0.72rem;
                padding: 3px 10px;
            }

            .section-head h2 {
                font-size: 1.3rem;
            }

            .sys-banner-content .badge {
                font-size: 0.72rem;
            }

            .config-list .item-label {
                min-width: 80px;
                font-size: 0.76rem;
            }

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

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --bg-deep: #060D1F;
  --bg-panel: #0B1730;
  --bg-panel-2: #111F3D;
  --accent-blue: #3E7BFF;
  --accent-green: #00C9A7;
  --text-main: #EAF1FF;
  --text-secondary: #8BA3C7;
  --text-weak: #5E77A3;
  --border-glass: rgba(115, 155, 255, 0.14);
  --border-bright: rgba(115, 155, 255, 0.28);
  --glass-bg: rgba(18, 30, 54, 0.55);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-img: 20px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.45);
  --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-main);
  background-color: var(--bg-deep);
  background-image: linear-gradient(180deg, var(--bg-panel), var(--bg-deep));
  background-repeat: no-repeat;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  color: var(--text-main);
  line-height: 1.3;
  margin: 0 0 16px;
}
p { margin: 0 0 16px; }
a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 150ms ease;
}
a:hover { color: var(--text-main); }
img { max-width: 100%; height: auto; border: 0; }
button { font-family: inherit; }
ul, ol { margin: 0 0 16px; }
.row { max-width: 100%; margin-left: auto; margin-right: auto; }

/* ===== 容器 ===== */
.container-1200 {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
  width: 100%;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 150ms ease;
  border: none;
  outline-offset: 2px;
  line-height: 1;
}
.btn:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 2px; }
.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 0 18px rgba(62, 123, 255, 0.45);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(62, 123, 255, 0.65);
  color: #ffffff;
}
.btn-primary:active { transform: scale(0.97); }
.btn-outline {
  background: rgba(18, 30, 54, 0.55);
  border: 1px solid rgba(115, 155, 255, 0.3);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: rgba(115, 155, 255, 0.6);
  background: rgba(18, 30, 54, 0.8);
  color: var(--text-main);
}
.btn-small {
  height: 36px;
  padding: 0 18px;
  font-size: 0.85rem;
  border-radius: 6px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 13, 31, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-glass);
  transition: box-shadow 200ms ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4); }
.brand-row {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: height 200ms ease;
}
.site-header.scrolled .brand-row { height: 48px; }
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  border-radius: 9px;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 0 14px rgba(62, 123, 255, 0.35);
}
.brand-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(18, 30, 54, 0.55);
  border: 1px solid rgba(115, 155, 255, 0.2);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 150ms ease;
}
.search-btn:hover {
  color: var(--text-main);
  border-color: var(--border-bright);
}
.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  background: var(--glass-bg);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  color: var(--text-main);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 150ms;
}
.menu-toggle:hover { border-color: var(--border-bright); }

/* ===== 频道导航 ===== */
.channel-row {
  height: 48px;
  border-top: 1px solid rgba(115, 155, 255, 0.1);
  background: rgba(4, 10, 24, 0.75);
}
.channel-nav {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-link {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 150ms ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.channel-link:hover {
  background: rgba(62, 123, 255, 0.2);
  color: var(--text-main);
}
.channel-link.active {
  color: var(--text-main);
  border-color: rgba(0, 201, 167, 0.6);
  background: rgba(0, 201, 167, 0.08);
}

/* ===== 文章横幅区 ===== */
.article-banner {
  position: relative;
  padding: 40px 0 32px;
  background:
    linear-gradient(180deg, rgba(11, 23, 48, 0.92), rgba(6, 13, 31, 0.97)),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border-glass);
  overflow: hidden;
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(115, 155, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(115, 155, 255, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.article-banner .container-1200 { position: relative; z-index: 1; }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-weak);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 150ms;
}
.breadcrumb a:hover { color: var(--accent-blue); }
.breadcrumb i { font-size: 0.7rem; color: var(--text-weak); }
.breadcrumb span { color: var(--text-weak); }

/* ===== 文章标题区 ===== */
.article-title-wrap {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  padding: 24px 0 16px;
}
.article-title-wrap h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin: 0 0 22px;
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
}
.meta-item {
  font-size: 0.85rem;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i { font-size: 0.8rem; color: var(--accent-green); }

/* ===== 正文主区 ===== */
.article-main {
  padding: 48px 0 60px;
  background: linear-gradient(180deg, var(--bg-deep), var(--bg-panel));
}
.article-content {
  max-width: 780px;
  margin: 0 auto;
}

/* ===== 正文排版 ===== */
.article-body {
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(234, 241, 255, 0.9);
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 38px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--accent-blue);
  border-radius: 0 2px 2px 0;
  color: var(--text-main);
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text-main);
}
.article-body p {
  margin-bottom: 20px;
  color: rgba(234, 241, 255, 0.88);
}
.article-body blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--accent-green);
  background: rgba(0, 201, 167, 0.06);
  border-radius: 0 8px 8px 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-body blockquote p { margin: 0; color: var(--text-secondary); }
.article-body ul,
.article-body ol {
  margin: 0 0 20px;
  padding-left: 24px;
}
.article-body li {
  margin-bottom: 8px;
  color: rgba(234, 241, 255, 0.85);
}
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  margin: 24px 0;
  box-shadow: var(--shadow-card);
  background: linear-gradient(135deg, var(--bg-panel), var(--bg-panel-2));
  border: 1px solid var(--border-glass);
  display: block;
}
.article-body a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover { color: var(--text-main); }

/* ===== 标签组 / 分享条 ===== */
.article-end {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--border-glass);
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.article-tag-label {
  font-size: 0.85rem;
  color: var(--text-weak);
}
.tag-capsule {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 201, 167, 0.5);
  color: var(--accent-green);
  font-size: 0.8rem;
  transition: all 150ms;
  text-decoration: none;
}
.tag-capsule:hover {
  background: rgba(0, 201, 167, 0.1);
  color: var(--text-main);
  border-color: rgba(0, 201, 167, 0.8);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
}
.share-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-right: 4px;
}
.share-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 150ms ease;
  font-size: 0.9rem;
}
.share-btn:hover {
  color: var(--text-main);
  border-color: var(--border-bright);
  background: rgba(62, 123, 255, 0.2);
  transform: translateY(-2px);
}

/* ===== 内容未找到 ===== */
.article-not-found {
  text-align: center;
  padding: 80px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.article-not-found i {
  font-size: 3rem;
  color: var(--text-weak);
  margin-bottom: 20px;
  display: block;
}
.article-not-found h2 {
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 12px;
}
.article-not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 56px 0 64px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-glass);
}
.section-title {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 600;
  color: var(--text-main);
  margin: 0 0 36px;
  padding-left: 16px;
  position: relative;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: var(--accent-blue);
}
.related-card {
  display: block;
  background: var(--glass-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 200ms ease;
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
  text-decoration: none;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-bright);
}
.related-card img {
  display: block;
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg-panel), var(--bg-panel-2));
}
.related-card-body {
  padding: 18px 20px 22px;
}
.related-card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text-main);
}
.related-card-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* ===== 返回按钮 ===== */
.back-wrap {
  text-align: center;
  padding: 28px 0 72px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-glass);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #040A18;
  border-top: 1px solid rgba(115, 155, 255, 0.12);
  padding: 48px 0 0;
}
.site-footer .row { gap: 24px; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.brand-icon.footer-icon {
  width: 32px;
  height: 32px;
  font-size: 0.9rem;
  border-radius: 8px;
}
.footer-brand-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}
.footer-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
  max-width: 320px;
}
.footer-nav h4,
.footer-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 14px;
}
.footer-nav ul,
.footer-info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-nav li,
.footer-info li {
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 150ms;
}
.footer-nav a:hover { color: var(--text-main); }
.footer-info i {
  width: 18px;
  color: var(--accent-green);
  margin-right: 4px;
}
.footer-bottom {
  margin-top: 40px;
  padding: 16px 0;
  border-top: 1px solid rgba(115, 155, 255, 0.08);
  text-align: center;
}
.footer-bottom p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-weak);
}

/* ===== Toast 提示 ===== */
.toast-msg {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(11, 23, 48, 0.95);
  border: 1px solid var(--border-bright);
  color: var(--text-main);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 300ms ease;
  box-shadow: var(--shadow-hover);
  max-width: 90vw;
  text-align: center;
}
.toast-msg.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-section .row .columns {
    margin-bottom: 8px;
  }
}

@media (max-width: 767px) {
  .brand-row { height: 56px; }
  .site-header.scrolled .brand-row { height: 56px; }
  .brand-text { font-size: 1.1rem; }
  .menu-toggle { display: inline-flex; }
  .channel-row {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    height: auto;
    max-height: 0;
    overflow: hidden;
    transition: max-height 350ms ease;
    border-top: 1px solid var(--border-glass);
    background: rgba(4, 10, 24, 0.95);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }
  .channel-row.open { max-height: 320px; }
  .channel-nav {
    flex-direction: column;
    align-items: stretch;
    padding: 14px 16px 22px;
    gap: 6px;
    height: auto;
    overflow: visible;
  }
  .channel-link {
    text-align: center;
    padding: 4px 12px;
    font-size: 0.95rem;
  }
  .article-banner { padding: 28px 0 24px; }
  .breadcrumb { margin-bottom: 18px; }
  .article-title-wrap h1 { font-size: 1.5rem; }
  .article-meta { gap: 12px; }
  .article-main { padding: 32px 0 40px; }
  .article-content { padding: 0 16px; }
  .article-body h2 { font-size: 1.3rem; }
  .article-body blockquote { padding: 14px 16px; }
  .related-section { padding: 40px 0 32px; }
  .related-card img { height: 140px; }
  .back-wrap { padding: 20px 0 52px; }
  .site-footer { padding: 36px 0 0; }
  .footer-bottom { margin-top: 24px; }
}

@media (max-width: 520px) {
  .brand-actions .btn-small { padding: 0 14px; font-size: 0.8rem; }
  .brand-text { font-size: 1rem; }
  .brand-icon { width: 32px; height: 32px; font-size: 0.9rem; }
  .article-title-wrap h1 { font-size: 1.35rem; }
  .article-body { font-size: 0.95rem; }
  .article-body h2 { font-size: 1.2rem; }
  .related-card-body h3 { font-size: 0.95rem; }
}

/* roulang page: category2 */
:root {
            --bg-deep: #060D1F;
            --bg-section: #0B1730;
            --bg-section-2: #111F3D;
            --accent: #3E7BFF;
            --accent-teal: #00C9A7;
            --text-main: #EAF1FF;
            --text-secondary: #8BA3C7;
            --text-weak: #5E77A3;
            --card-bg: rgba(18, 30, 54, 0.55);
            --card-border: rgba(115, 155, 255, 0.14);
            --card-border-hover: rgba(115, 155, 255, 0.28);
            --border-divide: rgba(115, 155, 255, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.45);
            --glow: 0 0 18px rgba(62, 123, 255, 0.45);
            --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-stack);
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #6d9aff;
        }
        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .container-1200 {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        .row {
            max-width: 100%;
            margin: 0 auto;
        }
        .row .columns {
            padding: 0 0.625rem;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            border: 1px solid transparent;
            transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
            text-decoration: none;
            line-height: 1;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--glow);
        }
        .btn-primary:hover {
            background: #5a8eff;
            color: #fff;
            box-shadow: 0 0 28px rgba(62, 123, 255, 0.65);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(115, 155, 255, 0.3);
            color: var(--text-main);
        }
        .btn-secondary:hover {
            border-color: rgba(115, 155, 255, 0.6);
            color: var(--text-main);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: scale(0.97);
        }
        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 1rem;
        }
        .btn:focus-visible,
        .icon-btn:focus-visible,
        .channel-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* 图标按钮 */
        .icon-btn {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            cursor: pointer;
            transition: border-color 0.2s, color 0.2s, background 0.2s;
            flex-shrink: 0;
        }
        .icon-btn:hover {
            border-color: var(--card-border-hover);
            color: var(--text-main);
            background: rgba(62, 123, 255, 0.12);
        }

        /* Header */
        .site-header {
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-divide);
        }
        .header-top {
            height: 64px;
            border-bottom: 1px solid rgba(115, 155, 255, 0.08);
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            text-decoration: none;
            line-height: 1;
        }
        .brand:hover {
            color: var(--text-main);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: var(--glow);
            flex-shrink: 0;
        }
        .brand-text {
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-sm);
            color: var(--text-main);
            cursor: pointer;
            font-size: 16px;
            transition: border-color 0.2s, background 0.2s;
        }
        .menu-toggle:hover {
            border-color: var(--card-border-hover);
            background: rgba(62, 123, 255, 0.12);
        }

        /* 频道导航 */
        .header-nav-wrap {
            background: rgba(6, 13, 31, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid transparent;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            height: 48px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-link {
            color: var(--text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 999px;
            transition: background 0.15s, color 0.15s, border-color 0.15s;
            white-space: nowrap;
            border: 1px solid transparent;
            text-decoration: none;
            line-height: 1;
        }
        .channel-link:hover {
            background: rgba(62, 123, 255, 0.2);
            color: #fff;
        }
        .channel-link.active {
            color: #fff;
            border-color: rgba(0, 201, 167, 0.5);
            background: rgba(0, 201, 167, 0.08);
        }

        /* 面包屑 */
        .breadcrumb {
            font-size: 0.8rem;
            color: var(--text-weak);
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb-sep {
            margin: 0 8px;
            color: var(--text-weak);
        }

        /* 页头 */
        .page-head {
            padding: 60px 0 30px;
            position: relative;
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-divide);
        }
        .page-head::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(rgba(62, 123, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(62, 123, 255, 0.05) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }
        .page-head .container-1200 {
            position: relative;
        }
        .page-head h1 {
            font-size: clamp(2.2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin: 0 0 12px;
            line-height: 1.2;
        }
        .page-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 760px;
            margin: 0;
            line-height: 1.8;
        }

        /* 横幅 */
        .banner-section {
            padding: 36px 0 60px;
        }
        .banner-img-block {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            background: var(--bg-section);
            min-height: 280px;
            display: flex;
        }
        .banner-img-block img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .banner-mask {
            position: relative;
            width: 100%;
            min-height: 280px;
            background: linear-gradient(90deg, rgba(6, 13, 31, 0.82) 0%, rgba(6, 13, 31, 0.45) 100%);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            justify-content: center;
            text-align: left;
            padding: 40px 48px;
            z-index: 1;
        }
        .banner-mask .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 201, 167, 0.12);
            border: 1px solid rgba(0, 201, 167, 0.35);
            color: var(--accent-teal);
            font-size: 0.75rem;
            border-radius: 999px;
            padding: 5px 14px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .banner-mask h2 {
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            font-weight: 600;
            margin: 0 0 10px;
            color: #fff;
            line-height: 1.3;
        }
        .banner-mask p {
            color: var(--text-secondary);
            font-size: 1rem;
            letter-spacing: 0.02em;
            margin: 0;
            max-width: 480px;
            line-height: 1.8;
        }

        /* 三列卡片 */
        .platform-cards {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(62, 123, 255, 0.1);
            border: 1px solid rgba(62, 123, 255, 0.25);
            color: var(--accent);
            font-size: 0.78rem;
            border-radius: 999px;
            padding: 5px 14px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
            font-weight: 500;
        }
        .platform-card {
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .platform-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 120px;
            height: 2px;
            background: var(--accent);
        }
        .platform-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(62, 123, 255, 0.15);
            border: 1px solid rgba(62, 123, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 21px;
            color: var(--accent);
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .platform-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 0 0 10px;
            color: var(--text-main);
        }
        .platform-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            margin: 0;
        }

        /* 玻璃卡 */
        .glass-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: 30px 28px;
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
            box-shadow: var(--shadow-card);
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--card-border-hover);
        }

        /* 配置详情 */
        .config-detail {
            padding: 80px 0 50px;
        }
        .section-heading {
            margin-bottom: 36px;
        }
        .section-heading h2 {
            font-size: clamp(1.6rem, 2.5vw, 2.2rem);
            font-weight: 600;
            padding-left: 16px;
            position: relative;
            margin: 0 0 10px;
            line-height: 1.3;
        }
        .section-heading h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-heading .section-sub {
            color: var(--text-secondary);
            margin: 0;
            font-size: 0.95rem;
        }
        .config-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: 28px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: border-color 0.2s, transform 0.2s;
            box-shadow: var(--shadow-card);
        }
        .config-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 120px;
            height: 2px;
            background: var(--accent-teal);
        }
        .config-card:hover {
            border-color: var(--card-border-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .config-card-head {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-divide);
        }
        .config-card-head i {
            color: var(--accent-teal);
            font-size: 18px;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(0, 201, 167, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .config-card-head h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0;
            color: var(--text-main);
        }
        .config-list li {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px solid rgba(115, 155, 255, 0.06);
            gap: 16px;
        }
        .config-list li:last-child {
            border-bottom: none;
        }
        .config-label {
            color: var(--text-weak);
            font-size: 0.82rem;
            flex-shrink: 0;
            min-width: 74px;
            padding-top: 2px;
        }
        .config-value {
            color: var(--text-main);
            font-size: 0.88rem;
            text-align: right;
            line-height: 1.6;
        }

        /* 提示 */
        .notice-block {
            padding: 40px 0 70px;
        }
        .notice-quote {
            background: rgba(0, 201, 167, 0.06);
            border: 1px solid rgba(0, 201, 167, 0.22);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .notice-quote i {
            color: var(--accent-teal);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 3px;
        }
        .notice-quote p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .notice-quote strong {
            color: var(--text-main);
            font-weight: 600;
        }

        /* CTA */
        .cta-bar {
            position: relative;
            padding: 80px 0;
            text-align: center;
            background: linear-gradient(180deg, var(--bg-section) 0%, var(--bg-section-2) 100%);
            overflow: hidden;
        }
        .cta-bar::before {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(62, 123, 255, 0.35) 0%, transparent 70%);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
        }
        .cta-bar::after {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(rgba(62, 123, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(62, 123, 255, 0.04) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }
        .cta-bar .container-1200 {
            position: relative;
            z-index: 1;
        }
        .cta-bar h2 {
            font-size: clamp(1.6rem, 2.5vw, 2.2rem);
            font-weight: 600;
            margin: 0 0 10px;
            line-height: 1.3;
        }
        .cta-bar p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1rem;
        }
        .cta-bar .btn {
            position: relative;
            z-index: 2;
        }

        /* Footer */
        .site-footer {
            background: #040A18;
            border-top: 1px solid rgba(115, 155, 255, 0.12);
            padding-top: 50px;
        }
        .site-footer .row {
            max-width: 100%;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: var(--glow);
            flex-shrink: 0;
        }
        .footer-brand-text {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
        }
        .footer-desc {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.8;
            margin: 0;
            max-width: 340px;
        }
        .site-footer h4 {
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 14px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 0.86rem;
        }
        .site-footer ul li {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer ul li i {
            color: var(--text-weak);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }
        .site-footer ul a {
            color: var(--text-secondary);
            transition: color 0.2s;
        }
        .site-footer ul a:hover {
            color: var(--text-main);
        }
        .footer-bottom {
            border-top: 1px solid rgba(115, 155, 255, 0.08);
            margin-top: 40px;
            padding: 18px 0;
        }
        .footer-bottom p {
            text-align: center;
            color: var(--text-weak);
            font-size: 0.78rem;
            margin: 0;
            letter-spacing: 0.02em;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .page-head {
                padding: 48px 0 24px;
            }
            .config-detail {
                padding: 60px 0 40px;
            }
            .platform-cards {
                padding: 50px 0 60px;
            }
        }
        @media (max-width: 767px) {
            .header-top {
                height: auto;
                padding: 10px 0;
            }
            .header-top-inner {
                flex-wrap: wrap;
            }
            .brand-text {
                font-size: 17px;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .header-nav-wrap {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(6, 13, 31, 0.65);
                backdrop-filter: blur(4px);
                -webkit-backdrop-filter: blur(4px);
                z-index: 199;
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.3s ease;
                border-top: none;
            }
            .header-nav-wrap.active {
                opacity: 1;
                visibility: visible;
            }
            .channel-nav {
                position: fixed;
                top: 0;
                right: -300px;
                width: 290px;
                height: 100vh;
                flex-direction: column;
                align-items: flex-start;
                background: var(--bg-deep);
                padding: 84px 26px 30px;
                overflow-y: auto;
                transition: right 0.3s ease;
                z-index: 200;
                border-left: 1px solid var(--card-border);
                gap: 8px;
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.4);
            }
            .channel-nav.open {
                right: 0;
            }
            .channel-link {
                display: block;
                padding: 13px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
                border: none;
                text-align: left;
                width: 100%;
            }
            .channel-link:hover {
                background: rgba(62, 123, 255, 0.15);
            }
            .channel-link.active {
                background: rgba(0, 201, 167, 0.1);
                border: 1px solid rgba(0, 201, 167, 0.3);
                border-radius: var(--radius-sm);
            }
            .page-head {
                padding: 40px 0 20px;
            }
            .page-head h1 {
                font-size: 1.9rem;
            }
            .page-desc {
                font-size: 0.94rem;
            }
            .banner-section {
                padding: 28px 0 48px;
            }
            .banner-mask {
                padding: 30px 24px;
                min-height: 230px;
            }
            .banner-mask h2 {
                font-size: 1.35rem;
            }
            .platform-cards {
                padding: 44px 0 52px;
            }
            .glass-card {
                padding: 24px 20px;
            }
            .config-detail {
                padding: 52px 0 34px;
            }
            .config-list li {
                flex-direction: column;
                gap: 4px;
            }
            .config-value {
                text-align: left;
            }
            .notice-block {
                padding: 30px 0 50px;
            }
            .notice-quote {
                padding: 20px;
                flex-direction: row;
                align-items: flex-start;
            }
            .cta-bar {
                padding: 60px 0;
            }
            .cta-bar p {
                font-size: 0.92rem;
            }
            .site-footer {
                padding-top: 40px;
            }
            .site-footer .columns {
                margin-bottom: 30px;
            }
        }
        @media (max-width: 520px) {
            .container-1200 {
                padding: 0 16px;
            }
            .header-actions .icon-btn {
                display: none;
            }
            .brand-text {
                white-space: normal;
            }
            .banner-mask .banner-tag {
                font-size: 0.7rem;
            }
            .platform-card {
                padding: 22px 18px;
            }
            .btn-lg {
                padding: 0 26px;
                height: 48px;
                font-size: 0.92rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #060D1F;
            --bg-section: #0B1730;
            --bg-elevated: #111F3D;
            --accent-blue: #3E7BFF;
            --accent-teal: #00C9A7;
            --text-primary: #EAF1FF;
            --text-secondary: #8BA3C7;
            --text-muted: #5E77A3;
            --border-alpha: rgba(115, 155, 255, 0.14);
            --border-light: rgba(115, 155, 255, 0.28);
            --glass-bg: rgba(18, 30, 54, 0.55);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-large: 20px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.45);
            --spacer-section: 80px;
            --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--accent-teal);
        }

        .container-1200 {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .site-header {
            position: relative;
            z-index: 200;
            background: rgba(6, 13, 31, 0.92);
            border-bottom: 1px solid var(--border-alpha);
        }

        .brand-bar {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: height .25s ease;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .brand-logo .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-blue), #2446a8);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 0 16px rgba(62, 123, 255, 0.35);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-btn {
            width: 36px;
            height: 36px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            background: rgba(18, 30, 54, 0.5);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .15s ease;
        }

        .search-btn:hover {
            border-color: var(--accent-blue);
            color: var(--accent-blue);
            box-shadow: 0 0 12px rgba(62, 123, 255, 0.25);
        }

        .btn-download-mini {
            height: 36px;
            padding: 0 18px;
            background: var(--accent-blue);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            box-shadow: 0 0 12px rgba(62, 123, 255, 0.3);
            transition: all .15s ease;
        }

        .btn-download-mini:hover {
            background: #5b8fff;
            box-shadow: 0 0 22px rgba(62, 123, 255, 0.55);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-download-mini:active {
            transform: scale(0.97);
        }

        .channel-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            height: 48px;
            border-top: 1px solid rgba(115, 155, 255, 0.08);
            background: rgba(6, 13, 31, 0.85);
            overflow-x: auto;
            scrollbar-width: none;
        }

        .channel-nav::-webkit-scrollbar {
            display: none;
        }

        .channel-nav.sticky {
            position: sticky;
            top: 0;
            z-index: 150;
            background: rgba(6, 13, 31, 0.88);
            backdrop-filter: blur(10px);
        }

        .channel-link {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 400;
            color: var(--text-secondary);
            border: 1px solid transparent;
            transition: all .15s ease;
            white-space: nowrap;
        }

        .channel-link:hover {
            background: rgba(62, 123, 255, 0.18);
            color: var(--text-primary);
        }

        .channel-link.active {
            background: rgba(62, 123, 255, 0.22);
            color: var(--text-primary);
            border-color: rgba(0, 201, 167, 0.45);
            font-weight: 500;
        }

        .mobile-menu-toggle {
            display: none;
            width: 36px;
            height: 36px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .drawer-mask {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 250;
            opacity: 0;
            transition: opacity .25s ease;
        }

        .drawer-mask.show {
            display: block;
            opacity: 1;
        }

        .drawer-panel {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100%;
            background: var(--bg-section);
            z-index: 260;
            padding: 24px 20px;
            transform: translateX(100%);
            transition: transform .25s ease;
            border-left: 1px solid var(--border-alpha);
        }

        .drawer-panel.show {
            transform: translateX(0);
        }

        .page-hero {
            position: relative;
            padding: 64px 0 56px;
            background:
                linear-gradient(rgba(6, 13, 31, 0.88), rgba(11, 23, 48, 0.92)),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            border-bottom: 1px solid var(--border-alpha);
        }

        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(rgba(6, 13, 31, 0.35), rgba(11, 23, 48, 0.55));
            z-index: 1;
        }

        .page-hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .page-hero .hero-title {
            font-size: clamp(2.2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .page-hero .hero-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 16px;
            padding: 5px 14px;
            border: 1px solid rgba(0, 201, 167, 0.4);
            border-radius: 999px;
            background: rgba(0, 201, 167, 0.08);
            color: var(--accent-teal);
            font-size: 13px;
        }

        .hero-badge .seal {
            width: 18px;
            height: 18px;
            background: #E85D5D;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            color: #fff;
            font-weight: 700;
            margin-right: 2px;
        }

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

        .section-block-alt {
            background: var(--bg-section);
            border-top: 1px solid var(--border-alpha);
            border-bottom: 1px solid var(--border-alpha);
        }

        .section-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 40px;
        }

        .section-heading h2 {
            font-size: clamp(1.6rem, 2.5vw, 2.2rem);
            font-weight: 600;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-heading::before {
            content: '';
            width: 4px;
            height: 26px;
            background: var(--accent-blue);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .feature-row {
            display: flex;
            align-items: center;
            gap: 40px;
            margin-bottom: 48px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-row.reverse {
            flex-direction: row-reverse;
        }

        .feature-media {
            flex: 1 1 46%;
            position: relative;
            border-radius: var(--radius-large);
            overflow: hidden;
            border: 1px solid var(--border-alpha);
            box-shadow: var(--shadow-card);
            background: linear-gradient(145deg, #0b1730, #111f3d);
        }

        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            transition: transform .4s ease;
        }

        .feature-media:hover img {
            transform: scale(1.02);
        }

        .feature-media::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(115, 155, 255, 0.08);
            border-radius: var(--radius-large);
            pointer-events: none;
        }

        .feature-content {
            flex: 1 1 54%;
        }

        .feature-content .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(62, 123, 255, 0.14);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-blue);
            margin-bottom: 16px;
        }

        .feature-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .feature-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 8px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        .feature-list li i {
            color: var(--accent-teal);
            font-size: 13px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .divider-banner {
            position: relative;
            padding: 80px 20px;
            text-align: center;
            background:
                linear-gradient(rgba(6, 13, 31, 0.82), rgba(11, 23, 48, 0.88)),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            border-top: 1px solid var(--border-alpha);
            border-bottom: 1px solid var(--border-alpha);
        }

        .divider-banner .banner-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            background: rgba(0, 201, 167, 0.12);
            border: 1px solid rgba(0, 201, 167, 0.35);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-teal);
        }

        .divider-banner h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .divider-banner p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-preview {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(115, 155, 255, 0.1);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            background: transparent;
            border: none;
            text-align: left;
            font-family: var(--font-stack);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            cursor: pointer;
            transition: color .15s ease;
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-blue);
            flex-shrink: 0;
            transition: transform .3s ease, background .3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(62, 123, 255, 0.15);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-answer-inner {
            padding: 0 0 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-band {
            padding: 70px 20px 80px;
            text-align: center;
            background: radial-gradient(ellipse at center, rgba(62, 123, 255, 0.22), transparent 65%),
                radial-gradient(ellipse at 20% 80%, rgba(0, 201, 167, 0.08), transparent 50%),
                var(--bg-deep);
        }

        .cta-band h2 {
            font-size: clamp(1.6rem, 2.5vw, 2.1rem);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .cta-band p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            background: var(--accent-blue);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(62, 123, 255, 0.45);
            transition: all .15s ease;
        }

        .btn-main:hover {
            background: #5b8fff;
            box-shadow: 0 0 28px rgba(62, 123, 255, 0.65);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-main:active {
            transform: scale(0.97);
        }

        .btn-main:focus-visible,
        .btn-download-mini:focus-visible,
        .channel-link:focus-visible,
        .faq-question:focus-visible {
            outline: 2px solid var(--accent-blue);
            outline-offset: 2px;
        }

        .site-footer {
            background: #040a18;
            border-top: 1px solid rgba(115, 155, 255, 0.12);
            padding: 56px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent-blue), #2446a8);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
        }

        .footer-brand-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-nav h4,
        .footer-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-nav ul,
        .footer-info ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
        }

        .footer-nav a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color .15s ease;
        }

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

        .footer-info li {
            color: var(--text-secondary);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-info li i {
            color: var(--accent-teal);
            width: 16px;
            font-size: 13px;
        }

        .footer-bottom {
            margin-top: 40px;
            padding: 20px 0;
            text-align: center;
            border-top: 1px solid rgba(115, 155, 255, 0.08);
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }

        @media (max-width: 1024px) {
            .feature-row,
            .feature-row.reverse {
                flex-direction: column;
                gap: 24px;
            }

            .feature-media {
                width: 100%;
                flex: none;
            }

            .feature-content {
                width: 100%;
                flex: none;
            }
        }

        @media (max-width: 768px) {
            .brand-bar {
                height: 60px;
            }

            .channel-nav {
                display: none;
            }

            .mobile-menu-toggle {
                display: inline-flex;
            }

            .site-header .search-btn {
                display: none;
            }

            .section-block {
                padding: 48px 0;
            }

            .divider-banner {
                padding: 56px 20px;
            }

            .cta-band {
                padding: 48px 16px 56px;
            }

            .feature-media img {
                aspect-ratio: 16 / 10;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 18px;
            }

            .brand-logo .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .btn-download-mini {
                padding: 0 14px;
                font-size: 13px;
            }

            .page-hero {
                padding: 44px 0 40px;
            }

            .page-hero .hero-title {
                font-size: 1.9rem;
            }

            .feature-content h3 {
                font-size: 1.05rem;
            }

            .faq-question {
                font-size: 0.95rem;
            }
        }

        .foundation-fix .grid-container {
            padding: 0;
        }

        .row {
            max-width: 1200px;
            margin: 0 auto;
        }