/* roulang page: index */
:root {
            --bg-primary: #070D1B;
            --bg-secondary: #0B1326;
            --bg-glass: rgba(255, 255, 255, 0.055);
            --border-glass: rgba(255, 255, 255, 0.1);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --accent-cyan: #22D3EE;
            --accent-blue: #0EA5E9;
            --accent-amber: #F59E0B;
            --accent-amber-light: #FBBF24;
            --success: #10B981;
            --info: #3B82F6;
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 22px rgba(34, 211, 238, 0.35);
            --transition: 200ms ease;
        }

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

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

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 13, 27, 0.78);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }

        .logo-group {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06121e;
            font-size: 1.1rem;
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.35);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.75rem;
            color: var(--success);
            background: rgba(16, 185, 129, 0.12);
            border: 1px solid rgba(16, 185, 129, 0.3);
            padding: 2px 10px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .logo-status::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
            }
            50% {
                opacity: 0.7;
                box-shadow: 0 0 0 4px rgba(16, 185, 129, 0);
            }
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 2rem;
        }

        .nav-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-link:hover {
            color: var(--accent-cyan);
        }
        .nav-link.active {
            color: var(--accent-cyan);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            border-radius: 2px;
        }

        .header-actions {
            display: none;
            align-items: center;
            gap: 0.75rem;
        }

        .online-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .online-badge i {
            color: var(--success);
            font-size: 0.65rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-light));
            color: #1E293B;
            font-weight: 700;
            font-size: 0.875rem;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
            white-space: nowrap;
            transition: all var(--transition);
            min-height: 44px;
        }
        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 6px 22px rgba(245, 158, 11, 0.4);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.875rem;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all var(--transition);
            min-height: 44px;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent-cyan);
        }

        .mobile-toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        @media (min-width: 768px) {
            .main-nav {
                display: flex;
            }
            .header-actions {
                display: flex;
            }
            .mobile-toggle {
                display: none;
            }
        }

        /* 移动端抽屉 */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 300px;
            height: 100vh;
            background: rgba(11, 19, 38, 0.96);
            backdrop-filter: blur(20px);
            z-index: 100;
            padding: 80px 24px 32px;
            transition: right 0.35s ease;
            display: flex;
            flex-direction: column;
            gap: 8px;
            box-shadow: -20px 0 50px rgba(0, 0, 0, 0.5);
        }
        .mobile-menu.open {
            right: 0;
        }
        .mobile-menu a {
            font-size: 1rem;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(255, 255, 255, 0.06);
            color: var(--accent-cyan);
        }
        .mobile-menu .btn-primary {
            margin-top: 16px;
        }
        .mobile-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(4px);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        .mobile-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-primary);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(7, 13, 27, 0.94) 0%,
                    rgba(7, 13, 27, 0.72) 45%,
                    rgba(14, 24, 46, 0.55) 100%);
        }
        .hero-glow {
            position: absolute;
            width: 560px;
            height: 560px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.28), transparent 70%);
            top: -120px;
            right: -80px;
            pointer-events: none;
        }
        .hero-glow-2 {
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.12), transparent 70%);
            bottom: 60px;
            left: 12%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 5rem 0 4rem;
            max-width: 820px;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.3);
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 1.5rem;
            letter-spacing: 0.02em;
        }

        .hero-title {
            font-size: clamp(2rem, 6vw, 3.4rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
            color: var(--text-primary);
        }
        .hero-title .grad {
            background: linear-gradient(120deg, var(--accent-cyan), #7DD3FC);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 640px;
        }

        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .hero-trust .stars {
            color: var(--accent-amber);
            font-size: 0.8rem;
            letter-spacing: 2px;
        }
        .hero-trust .divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.15);
        }

        .scroll-indicator {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            animation: float-y 2.5s ease-in-out infinite;
            color: var(--text-muted);
            z-index: 3;
        }
        @keyframes float-y {
            0%,
            100% {
                transform: translate(-50%, 0);
            }
            50% {
                transform: translate(-50%, 8px);
            }
        }

        /* ===== 价值条 ===== */
        .value-strip {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            padding: 3rem 0;
        }
        .value-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 768px) {
            .value-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .value-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }
        .value-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .value-title {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .value-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Section common ===== */
        .section-pad {
            padding: 4.5rem 0;
        }
        @media (min-width: 768px) {
            .section-pad {
                padding: 6rem 0;
            }
        }
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 3px 12px;
            border-radius: 999px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: clamp(1.5rem, 4vw, 2.25rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 640px;
            line-height: 1.7;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
        }
        .section-link {
            color: var(--accent-cyan);
            font-size: 0.875rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
            white-space: nowrap;
        }
        .section-link:hover {
            gap: 10px;
        }

        /* ===== 轮播 ===== */
        .showcase-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }
        .showcase-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .showcase-grid {
                grid-template-columns: 1.2fr 0.8fr;
            }
        }
        .carousel-wrap {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
        }
        .carousel-track {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .carousel-slide {
            position: absolute;
            inset: 0;
            display: none;
            opacity: 0;
            transition: opacity 0.5s ease;
        }
        .carousel-slide:first-child {
            display: block;
            opacity: 1;
        }
        .carousel-slide.active {
            display: block;
            opacity: 1;
        }
        .carousel-slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .carousel-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(11, 19, 38, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 5;
            transition: all var(--transition);
            backdrop-filter: blur(8px);
        }
        .carousel-btn:hover {
            background: rgba(34, 211, 238, 0.25);
            border-color: var(--accent-cyan);
        }
        .carousel-prev {
            left: 14px;
        }
        .carousel-next {
            right: 14px;
        }
        .carousel-dots {
            position: absolute;
            bottom: 14px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 8px;
            z-index: 5;
        }
        .carousel-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.35);
            transition: all var(--transition);
        }
        .carousel-dot.active {
            background: var(--accent-cyan);
            width: 20px;
            border-radius: 4px;
        }

        .showcase-points {
            display: flex;
            flex-direction: column;
            gap: 1.1rem;
        }
        .showcase-point {
            display: flex;
            gap: 0.8rem;
            align-items: flex-start;
        }
        .showcase-point i {
            color: var(--accent-cyan);
            margin-top: 4px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .showcase-point strong {
            display: block;
            font-size: 0.95rem;
            color: var(--text-primary);
            margin-bottom: 2px;
        }
        .showcase-point span {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 系统要求 ===== */
        .req-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 1024px) {
            .req-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
            }
        }
        .req-block {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.8rem;
        }
        .req-block-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .req-block-title i {
            color: var(--accent-cyan);
        }
        .req-list {
            list-style: none;
        }
        .req-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .req-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .req-dot.cyan {
            background: var(--accent-cyan);
        }
        .req-dot.blue {
            background: var(--info);
        }
        .req-dot.amber {
            background: var(--accent-amber);
        }

        .status-card {
            background: linear-gradient(145deg, rgba(34, 211, 238, 0.08), rgba(59, 130, 246, 0.05));
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-card);
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            justify-content: center;
        }
        .status-card .status-row {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .status-online {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 12px rgba(16, 185, 129, 0.6);
            animation: pulse-dot 2s infinite;
        }
        .status-card .status-label {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
        }
        .status-card .status-sub {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .compat-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 0.5rem;
        }
        .compat-tag {
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
        }
        .compat-tag.ok {
            border-color: rgba(16, 185, 129, 0.4);
            color: var(--success);
        }

        /* ===== 评价墙 ===== */
        .reviews-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .reviews-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .review-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.6rem;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            transition: all var(--transition);
            transform: rotate(var(--rotate, 0deg));
        }
        .review-card:nth-child(1) {
            --rotate: -1deg;
        }
        .review-card:nth-child(2) {
            --rotate: 0.5deg;
        }
        .review-card:nth-child(3) {
            --rotate: -0.5deg;
        }
        .review-card:hover {
            border-color: rgba(34, 211, 238, 0.5);
            box-shadow: var(--shadow-glow);
            transform: rotate(0deg) translateY(-2px);
        }
        .review-head {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }
        .review-user {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .review-source {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .review-stars {
            color: var(--accent-amber);
            font-size: 0.8rem;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 下载 ===== */
        .download-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }
        .download-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .download-btns {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin: 2rem 0 1.2rem;
        }
        @media (min-width: 640px) {
            .download-btns {
                flex-direction: row;
                justify-content: center;
            }
        }
        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-light));
            color: #1E293B;
            padding: 14px 26px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.35);
            transition: all var(--transition);
            min-width: 220px;
            justify-content: center;
        }
        .download-btn:hover {
            filter: brightness(1.07);
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(245, 158, 11, 0.45);
        }
        .download-btn .btn-icon {
            font-size: 1.6rem;
        }
        .download-btn .btn-main {
            font-size: 0.95rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .download-btn .btn-sub {
            font-size: 0.75rem;
            font-weight: 500;
            opacity: 0.8;
            display: block;
        }
        .download-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }

        /* ===== 新闻资讯 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }
        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .news-feature {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition);
            grid-column: 1 / -1;
        }
        @media (min-width: 768px) {
            .news-feature {
                flex-direction: row;
            }
        }
        .news-feature:hover {
            border-color: rgba(34, 211, 238, 0.5);
            box-shadow: var(--shadow-glow);
        }
        .news-feature img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        @media (min-width: 768px) {
            .news-feature img {
                width: 45%;
                height: auto;
            }
        }
        .news-feature:hover img {
            transform: scale(1.03);
        }
        .news-feature-content {
            padding: 1.4rem 1.6rem;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .news-feature-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .news-feature-content p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-category {
            font-size: 0.72rem;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--accent-cyan);
            display: inline-block;
            width: fit-content;
            font-weight: 600;
        }
        .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: 1rem;
            padding: 1.2rem 1.4rem;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: all var(--transition);
        }
        .news-item:hover {
            border-color: rgba(34, 211, 238, 0.4);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        .news-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.35;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item p {
            font-size: 0.84rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem;
            color: var(--text-muted);
            background: var(--bg-glass);
            border: 1px dashed var(--border-glass);
            border-radius: var(--radius-card);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-secondary);
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: 1rem;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.active {
            border-color: rgba(34, 211, 238, 0.35);
        }
        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.4rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            min-height: 52px;
            gap: 1rem;
        }
        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 211, 238, 0.15);
            border-color: var(--accent-cyan);
        }
        .faq-content {
            display: none;
            padding: 0 1.4rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.js-mode .faq-content {
            display: none;
        }
        .faq-item.js-mode.active .faq-content {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-band {
            background: linear-gradient(120deg, rgba(245, 158, 11, 0.15), rgba(34, 211, 238, 0.12));
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .cta-inner {
            text-align: center;
            padding: 3.5rem 0;
        }
        .cta-inner h2 {
            font-size: clamp(1.4rem, 3vw, 2rem);
            font-weight: 800;
            margin-bottom: 0.6rem;
        }
        .cta-inner p {
            color: var(--text-secondary);
            margin-bottom: 1.8rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04070F;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
            }
        }
        .footer-brand .logo-text {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 0.5rem;
        }
        .footer-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-contact {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--accent-cyan);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 1.2rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: clamp(1.8rem, 5vw, 2.6rem);
            }
        }

        @media (max-width: 640px) {
            .hero-subtitle {
                font-size: 0.92rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.8rem;
            }
        }

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

/* roulang page: article */
:root {
            --bg-primary: #070D1B;
            --bg-secondary: #0B1326;
            --glass-bg: rgba(255, 255, 255, 0.055);
            --glass-border: rgba(255, 255, 255, 0.1);
            --text-main: #F1F5F9;
            --text-muted: #94A3B8;
            --text-weak: #64748B;
            --accent: #22D3EE;
            --accent-deep: #0EA5E9;
            --accent-glow: rgba(34, 211, 238, 0.35);
            --cta: #F59E0B;
            --cta-light: #FBBF24;
            --success: #10B981;
            --info: #3B82F6;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 999px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.45);
            --shadow-btn: 0 0 22px rgba(34, 211, 238, 0.35);
            --shadow-btn-hover: 0 0 34px rgba(34, 211, 238, 0.55);
            --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --ease: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background:
                radial-gradient(circle at 12% 18%, rgba(34, 211, 238, 0.07), transparent 40%),
                radial-gradient(circle at 88% 80%, rgba(14, 165, 233, 0.05), transparent 35%),
                var(--bg-primary);
            color: var(--text-main);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1;
        }

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(34, 211, 238, 0.7);
            outline-offset: 3px;
            border-radius: 8px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* ===== Header / Nav ===== */
        .main-nav-wrap {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(7, 13, 27, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            gap: 24px;
        }

        .logo-group {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            white-space: nowrap;
            min-width: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            color: var(--accent);
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 900;
            font-size: 1.05rem;
            letter-spacing: -0.01em;
            color: var(--text-main);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .logo-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.72rem;
            color: var(--success);
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid rgba(16, 185, 129, 0.3);
            padding: 2px 10px;
            border-radius: 999px;
            flex-shrink: 0;
        }

        .logo-status i {
            font-size: 0.45rem;
            vertical-align: middle;
        }

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

        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 10px 16px;
            border-radius: 10px;
            transition: color var(--ease), background var(--ease);
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
        }

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

        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--success);
            background: rgba(16, 185, 129, 0.08);
            border: 1px solid rgba(16, 185, 129, 0.25);
            padding: 6px 14px;
            border-radius: 999px;
        }

        .status-pill i {
            font-size: 0.5rem;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            background: linear-gradient(135deg, #F59E0B, #FBBF24);
            color: #1E293B;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 22px;
            border-radius: 12px;
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.28);
            transition: transform var(--ease), box-shadow var(--ease), color var(--ease);
            white-space: nowrap;
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 26px rgba(245, 158, 11, 0.42);
            color: #0F172A;
        }

        .btn-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(245, 158, 11, 0.25);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.04);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--text-main);
            transition: transform var(--ease), opacity var(--ease);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(3.5px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            transform: translateY(-3.5px) rotate(-45deg);
        }

        .mobile-drawer {
            position: fixed;
            top: 72px;
            right: 0;
            bottom: 0;
            width: min(320px, 85%);
            background: rgba(7, 13, 27, 0.94);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            padding: 28px 20px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 8px;
            visibility: hidden;
            opacity: 0;
            transform: translateX(100%);
            transition: transform 300ms ease, opacity 250ms ease, visibility 250ms ease;
        }

        .mobile-drawer.open {
            visibility: visible;
            opacity: 1;
            transform: translateX(0);
        }

        .drawer-link {
            display: block;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 0.975rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: background var(--ease), color var(--ease);
        }

        .drawer-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
        }

        .drawer-link.active {
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
        }

        .drawer-cta {
            margin-top: 20px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-weak);
            padding: 28px 0 0;
            max-width: 1280px;
            margin: 0 auto;
        }

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

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

        .breadcrumb .current {
            color: var(--text-weak);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 360px;
        }

        .breadcrumb-sep {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.25);
        }

        /* ===== Article Panel ===== */
        .article-main {
            padding: 32px 0 60px;
        }

        .article-panel {
            max-width: 800px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 24px;
            padding: 44px;
        }

        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .article-title {
            font-size: clamp(1.6rem, 4vw, 2.25rem);
            font-weight: 800;
            line-height: 1.4;
            letter-spacing: -0.02em;
            margin: 0 0 18px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(34, 211, 238, 0.3);
            background: rgba(34, 211, 238, 0.08);
            color: var(--accent);
        }

        /* ===== Article Body ===== */
        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: #E2E8F0;
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin: 34px 0 16px;
            color: var(--text-main);
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 28px 0 14px;
            color: var(--text-main);
        }

        .article-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 24px 0 12px;
            color: var(--text-main);
        }

        .article-body p {
            margin: 0 0 20px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 26px;
        }

        .article-body ul li {
            list-style-type: disc;
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body ol li {
            list-style-type: decimal;
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(34, 211, 238, 0.06);
            margin: 24px 0;
            padding: 16px 22px;
            border-radius: 0 14px 14px 0;
            color: var(--text-muted);
            font-style: normal;
        }

        .article-body img {
            width: 100%;
            border-radius: var(--radius-xl);
            margin: 24px 0;
        }

        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: text-decoration-thickness var(--ease);
        }

        .article-body a:hover {
            text-decoration-thickness: 2px;
        }

        .article-body code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 6px;
            border-radius: 6px;
            font-size: 0.9em;
            font-family: 'SFMono-Regular', Consolas, monospace;
        }

        .article-body pre {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 20px;
            overflow-x: auto;
            margin: 24px 0;
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.925rem;
        }

        .article-body th,
        .article-body td {
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 12px 16px;
            text-align: left;
        }

        .article-body th {
            background: rgba(255, 255, 255, 0.06);
            font-weight: 700;
        }

        /* ===== Empty ===== */
        .article-empty {
            text-align: center;
            padding: 80px 24px;
        }

        .article-empty i {
            font-size: 3rem;
            color: var(--text-weak);
            margin-bottom: 16px;
        }

        .article-empty h2 {
            font-size: 1.4rem;
            margin-bottom: 8px;
        }

        .article-empty p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 12px 24px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-main);
            font-weight: 500;
            font-size: 0.9rem;
            transition: background var(--ease), border-color var(--ease), transform var(--ease);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 44px;
            padding: 16px 36px;
            border-radius: 14px;
            background: linear-gradient(135deg, #F59E0B, #FBBF24);
            color: #1E293B;
            font-weight: 700;
            font-size: 1.02rem;
            box-shadow: 0 6px 26px rgba(245, 158, 11, 0.3);
            transition: transform var(--ease), box-shadow var(--ease), color var(--ease);
        }

        .btn-primary-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 34px rgba(245, 158, 11, 0.42);
            color: #0F172A;
        }

        /* ===== CTA Band ===== */
        .article-cta {
            padding: 20px 0 0;
        }

        .cta-band {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(34, 211, 238, 0.08));
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 24px;
            padding: 36px 40px;
            max-width: 960px;
            margin: 0 auto;
        }

        .cta-award {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--cta-light);
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.3);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .cta-info h3 {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .cta-info p {
            color: var(--text-muted);
            font-size: 0.925rem;
            margin: 0;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 60px 0 80px;
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 16px;
        }

        .section-head h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 800;
            margin: 0;
        }

        .kicker {
            display: inline-flex;
            align-items: center;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--accent);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            padding: 6px 14px;
            border-radius: 999px;
            flex-shrink: 0;
        }

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

        .related-card {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 18px;
            padding: 20px;
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: var(--shadow-card);
        }

        .related-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: 12px;
            margin-bottom: 14px;
        }

        .related-card-title {
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .related-card-title a:hover {
            color: var(--accent);
        }

        .related-card-excerpt {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .related-card-meta {
            font-size: 0.78rem;
            color: var(--text-weak);
            margin-top: auto;
        }

        .related-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-top: 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04070F;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-group {
            margin-bottom: 4px;
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-top: 14px;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-title {
            font-size: 0.925rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

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

        .footer-links a {
            font-size: 0.875rem;
            color: var(--text-muted);
            transition: color var(--ease);
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .footer-contact span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-actions .status-pill {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .article-panel {
                padding: 24px 20px;
                border-radius: 18px;
            }

            .article-main {
                padding: 24px 0 40px;
            }

            .cta-band {
                flex-direction: column;
                padding: 28px 24px;
                text-align: center;
            }

            .cta-info {
                text-align: center;
            }

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

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

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

        @media (max-width: 520px) {
            .logo-status {
                display: none;
            }

            .btn-cta {
                padding: 10px 16px;
                font-size: 0.85rem;
            }

            .article-title {
                font-size: 1.45rem;
            }

            .cta-band {
                padding: 24px 20px;
            }

            .cta-info h3 {
                font-size: 1.1rem;
            }

            .btn-primary-lg {
                width: 100%;
            }

            .related-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .related-actions .btn-secondary,
            .related-actions .btn-cta {
                width: 100%;
            }

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

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

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

/* roulang page: category1 */
:root {
            --bg-base: #070D1B;
            --bg-deep: #0B1326;
            --bg-black: #04070F;
            --text-main: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --primary: #22D3EE;
            --primary-dark: #0EA5E9;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --success: #10B981;
            --info: #3B82F6;
            --border-glass: rgba(255, 255, 255, 0.1);
            --bg-glass: rgba(255, 255, 255, 0.055);
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-pill: 999px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 22px rgba(34, 211, 238, 0.35);
            --transition: 200ms ease;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 1rem;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        summary {
            font-family: inherit;
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.5);
            border-radius: 10px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(7, 13, 27, 0.78);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 16px;
            height: 72px;
        }

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

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 11px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #04101F;
            font-size: 1.05rem;
            box-shadow: var(--shadow-glow);
        }

        .brand-text {
            font-size: 1.2rem;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--text-main);
            line-height: 1.2;
        }

        .brand-sub {
            display: block;
            font-size: 0.65rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.1em;
            margin-top: 2px;
        }

        .main-nav {
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 6px 2px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-main);
        }

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .online-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.055);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 6px 14px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .online-badge i {
            color: var(--success);
            font-size: 0.5rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            font-weight: 700;
            padding: 12px 26px;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            min-height: 44px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #1E293B;
            box-shadow: 0 4px 22px rgba(245, 158, 11, 0.28);
        }

        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(245, 158, 11, 0.25);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.45);
            color: #fff;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.7);
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 0.875rem;
            min-height: 40px;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-toggle span {
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .header-actions .btn-sm {
            display: inline-flex;
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            position: relative;
            padding: 128px 0 64px;
            background-size: cover;
            background-position: center;
            text-align: center;
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .breadcrumb .sep {
            opacity: 0.5;
            font-size: 0.75rem;
        }

        .page-banner h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .page-banner .lead {
            max-width: 680px;
            margin: 0 auto;
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.8;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }

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

        .section-head {
            max-width: 760px;
            margin-bottom: 52px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .kicker {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.28);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(1.6rem, 4vw, 2.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 1rem;
        }

        /* ===== 图文交错 ===== */
        .alternate-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 52px;
            align-items: center;
            margin-bottom: 64px;
        }

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

        .alternate-row .media-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-card);
            position: relative;
            aspect-ratio: 16 / 10;
        }

        .alternate-row .media-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .alternate-row .media-wrap:hover img {
            transform: scale(1.03);
        }

        .alternate-row .content-kicker {
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .alternate-row h3 {
            font-size: 1.5rem;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .alternate-row p {
            color: var(--text-secondary);
            line-height: 1.85;
            font-size: 0.98rem;
        }

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

        .step-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 30px 22px;
            text-align: center;
            backdrop-filter: blur(10px);
            transition: all var(--transition);
            position: relative;
        }

        .step-card:hover {
            border-color: rgba(34, 211, 238, 0.45);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
            transform: translateY(-4px);
        }

        .step-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #04101F;
            font-weight: 900;
            font-size: 1.1rem;
            margin-bottom: 16px;
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 识别卡片 ===== */
        .identify-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .identify-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            backdrop-filter: blur(10px);
            transition: all var(--transition);
        }

        .identify-card:hover {
            border-color: rgba(34, 211, 238, 0.5);
            box-shadow: 0 0 34px rgba(34, 211, 238, 0.12);
        }

        .identify-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--primary);
            font-size: 1.15rem;
            margin-bottom: 18px;
        }

        .identify-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .identify-card p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.75;
        }

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

        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: 18px;
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(8px);
            transition: border-color var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.35);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--text-main);
        }

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

        .faq-item summary::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--primary);
            font-size: 0.8rem;
            transition: transform 0.25s ease, background 0.25s ease;
        }

        .faq-item[open] summary::after {
            content: "\f068";
            transform: rotate(180deg);
            background: rgba(34, 211, 238, 0.12);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 0.94rem;
        }

        /* ===== CTA 条 ===== */
        .cta-section {
            padding: 56px 0 80px;
        }

        .cta-band {
            background: linear-gradient(120deg, rgba(245, 158, 11, 0.12), rgba(34, 211, 238, 0.14)), var(--bg-deep);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 28px;
            padding: 56px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.2);
            filter: blur(90px);
            top: -80px;
            right: -40px;
            pointer-events: none;
        }

        .cta-band h2 {
            font-size: clamp(1.6rem, 4vw, 2.2rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .cta-band p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-black);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 60px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand .logo-group {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 14px;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #04101F;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 900;
            font-size: 1.08rem;
            color: var(--text-main);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.75;
            max-width: 300px;
        }

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

        .footer-links li {
            margin-bottom: 9px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.92rem;
            transition: color var(--transition);
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .footer-contact span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            width: 16px;
            text-align: center;
            color: var(--primary);
        }

        .footer-contact .fa-circle {
            font-size: 0.5rem;
            color: var(--success);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom i {
            color: var(--primary);
        }

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

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

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

            .main-nav {
                gap: 20px;
            }

            .header-actions .online-badge {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .header-actions .btn-sm {
                display: none;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(7, 13, 27, 0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 28px 32px;
                gap: 6px;
                border-bottom: 1px solid var(--border-glass);
                z-index: 49;
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            }

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

            .nav-link {
                font-size: 1.05rem;
                padding: 12px 0;
                width: 100%;
            }

            .nav-link.active::after {
                left: 0;
                width: 34px;
                height: 3px;
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 104px 0 48px;
            }

            .page-banner h1 {
                font-size: clamp(1.75rem, 7vw, 2.5rem);
            }

            .page-banner .lead {
                font-size: 0.96rem;
                padding: 0 6px;
            }

            .header-inner {
                height: 64px;
            }

            .main-nav {
                top: 64px;
            }

            .section {
                padding: 52px 0;
            }

            .section-head h2 {
                font-size: 1.5rem;
            }

            .alternate-row {
                grid-template-columns: 1fr;
                gap: 28px;
                margin-bottom: 44px;
            }

            .alternate-row .media-wrap {
                aspect-ratio: 16 / 10;
            }

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

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

            .cta-band {
                padding: 40px 24px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

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

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

        @media (max-width: 420px) {
            .container {
                padding-left: 0.85rem;
                padding-right: 0.85rem;
            }

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

        /* ===== 减少动画 ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #070D1B;
            --bg-secondary: #0B1326;
            --bg-panel: rgba(255, 255, 255, 0.055);
            --border-panel: rgba(255, 255, 255, 0.1);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-weak: #64748B;
            --cyan: #22D3EE;
            --cyan-deep: #0EA5E9;
            --amber: #F59E0B;
            --amber-light: #FBBF24;
            --success: #10B981;
            --info: #3B82F6;
            --radius-card: 1rem;
            --radius-btn: 0.75rem;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 22px rgba(34, 211, 238, 0.35);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 13, 27, 0.78);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .logo-group {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, #22D3EE, #0EA5E9);
            color: #0B1326;
            font-size: 1.1rem;
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.35);
            transition: box-shadow .2s ease;
        }
        .logo-group:hover .logo-icon {
            box-shadow: 0 0 30px rgba(34, 211, 238, 0.55);
        }
        .logo-text {
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.72rem;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0.2rem 0.6rem;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            line-height: 1.4;
        }
        .status-pill i {
            color: var(--success);
            font-size: 0.45rem;
        }
        .main-nav {
            display: none;
        }
        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
                align-items: center;
                margin: 0 auto;
            }
        }
        .nav-link {
            position: relative;
            padding: 0.4rem 0.1rem;
            margin: 0 1rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
            transition: color .2s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #22D3EE, #0EA5E9);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: var(--text-primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: #22D3EE;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .nav-download-btn {
            display: none;
        }
        @media (min-width: 640px) {
            .nav-download-btn {
                display: inline-flex;
            }
        }
        .menu-toggle {
            display: inline-flex;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            color: var(--text-primary);
            font-size: 1.15rem;
            transition: background .2s ease, border-color .2s ease;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(34, 211, 238, 0.4);
        }
        @media (min-width: 1024px) {
            .menu-toggle {
                display: none;
            }
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            width: min(85vw, 360px);
            height: 100vh;
            background: rgba(7, 13, 27, 0.96);
            backdrop-filter: blur(20px);
            border-left: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 999;
            transform: translateX(100%);
            transition: transform .3s ease;
            padding: 2rem 1.5rem 2.5rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(7, 13, 27, 0.6);
            backdrop-filter: blur(4px);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: opacity .25s ease, visibility .25s ease;
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer a.m-drawer-link {
            font-size: 1.05rem;
            font-weight: 600;
            padding: 0.75rem 0;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-drawer a.m-drawer-link.active {
            color: #22D3EE;
        }
        .drawer-close {
            align-self: flex-end;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            color: var(--text-primary);
            font-size: 1rem;
            transition: background .2s ease;
        }
        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Button ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #F59E0B, #FBBF24);
            color: #1E293B;
            font-weight: 700;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-btn);
            box-shadow: 0 0 18px rgba(251, 191, 36, 0.25);
            transition: all .2s ease;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(251, 191, 36, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 14px rgba(251, 191, 36, 0.35);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.35);
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            min-height: 44px;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(34, 211, 238, 0.6);
            color: #22D3EE;
        }

        /* ===== Glass / Badge ===== */
        .glass-panel {
            background: var(--bg-panel);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-panel);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .glass-panel:hover {
            border-color: rgba(34, 211, 238, 0.5);
            box-shadow: 0 0 34px rgba(34, 211, 238, 0.18), 0 20px 50px rgba(0, 0, 0, 0.5);
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--cyan);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
            font-size: 0.78rem;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.1);
            border-color: rgba(34, 211, 238, 0.3);
            color: #67E8F9;
        }
        .badge-amber {
            background: rgba(245, 158, 11, 0.1);
            border-color: rgba(245, 158, 11, 0.3);
            color: #FBBF24;
        }

        /* ===== Section ===== */
        .section {
            padding: 4rem 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 6rem 0;
            }
        }
        .section-alt {
            background: var(--bg-secondary);
        }
        .section-title {
            font-size: clamp(1.5rem, 4vw, 2.25rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }
        .section-desc {
            color: var(--text-secondary);
            margin-top: 0.75rem;
            max-width: 46rem;
        }
        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--cyan);
            font-weight: 600;
            font-size: 0.9rem;
            transition: color .2s ease;
        }
        .link-arrow i {
            transition: transform .2s ease;
        }
        .link-arrow:hover {
            color: #67E8F9;
        }
        .link-arrow:hover i {
            transform: translateX(4px);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 5rem 0 4rem;
            background-image: linear-gradient(rgba(7, 13, 27, 0.88), rgba(7, 13, 27, 0.94)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 15%;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            right: 5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.15), transparent 70%);
            pointer-events: none;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 1.25rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--cyan);
        }
        .category-hero h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--text-primary);
        }
        .hero-lead {
            margin-top: 1rem;
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 34rem;
            line-height: 1.8;
        }
        .secure-panel {
            padding: 1.75rem;
            position: relative;
        }
        .secure-panel .panel-title {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
        }
        .secure-panel .panel-status {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .secure-panel .panel-status i {
            color: var(--success);
            font-size: 0.5rem;
        }
        .secure-check-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.65rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .secure-check-row:last-child {
            border-bottom: none;
        }
        .secure-check-row i.check {
            color: var(--success);
            font-size: 0.9rem;
            width: 20px;
            text-align: center;
        }

        /* ===== Feature Card Grid ===== */
        .feature-card {
            padding: 1.5rem;
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            border-radius: var(--radius-card);
            transition: transform .2s ease, border-color .25s ease, box-shadow .25s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 1.15rem;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--cyan);
            flex-shrink: 0;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex-grow: 1;
        }
        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }
        .feature-tags .badge {
            font-size: 0.7rem;
            padding: 0.15rem 0.55rem;
        }

        /* ===== Steps ===== */
        .steps-wrap {
            position: relative;
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }
        @media (min-width: 768px) {
            .steps-wrap {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.5rem;
            }
        }
        .step-item {
            position: relative;
            padding: 1.5rem;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color .25s ease, background .25s ease;
        }
        .step-item:hover {
            border-color: rgba(34, 211, 238, 0.4);
            background: rgba(255, 255, 255, 0.07);
        }
        .step-num {
            font-size: 0.75rem;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            margin-bottom: 1rem;
            font-family: ui-monospace, "SFMono-Regular", monospace;
        }
        .step-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Security Checklist ===== */
        .check-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.7rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .check-item:last-child {
            border-bottom: none;
        }
        .check-item i {
            color: var(--success);
            margin-top: 0.2rem;
            font-size: 0.95rem;
        }
        .check-item strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
            max-width: 52rem;
            margin: 0 auto;
        }
        .faq-item {
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.055);
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
            transition: border-color .2s ease;
        }
        .faq-item[open] {
            border-color: rgba(34, 211, 238, 0.4);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item .faq-icon {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--cyan);
            font-size: 0.8rem;
            transition: transform .25s ease, background .2s ease;
            flex-shrink: 0;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(135deg);
            background: rgba(34, 211, 238, 0.12);
        }
        .faq-answer {
            padding: 0 1.4rem 1.25rem;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-band {
            position: relative;
            overflow: hidden;
            padding: 4.5rem 0 5rem;
            background: linear-gradient(120deg, rgba(245, 158, 11, 0.1), rgba(34, 211, 238, 0.07)), var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .cta-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(251, 191, 36, 0.08), transparent 70%);
            pointer-events: none;
        }
        .cta-title {
            font-size: clamp(1.5rem, 3.6vw, 2.2rem);
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04070F;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.3fr;
                gap: 2rem;
            }
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-top: 0.8rem;
            line-height: 1.7;
            max-width: 24rem;
        }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color .2s ease, padding-left .2s ease;
        }
        .footer-links a:hover {
            color: var(--cyan);
            padding-left: 4px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .footer-contact i {
            width: 16px;
            text-align: center;
            color: var(--text-weak);
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.75rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
            }
        }

        /* ===== Misc ===== */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            border: none;
            margin: 0;
        }
        :focus-visible {
            outline: 2px solid rgba(34, 211, 238, 0.7);
            outline-offset: 2px;
            border-radius: 4px;
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
            }
            html {
                scroll-behavior: auto;
            }
        }