/* roulang page: index */
/* ===== FT Frontier Tech 玻璃质感系统 ===== */
        :root {
            --bg-0: #0b1220;
            --bg-1: #111a2e;
            --bg-2: #18233a;
            --primary: #35a7ff;
            --primary-strong: #0f7fe6;
            --primary-glow: rgba(47, 168, 255, 0.45);
            --accent-amber: #f5a524;
            --success: #22c58b;
            --danger: #ff5d5d;
            --text-hi: #f2f6ff;
            --text-mid: #a7b4cf;
            --text-low: #63708f;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
            --container-w: 1200px;
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-0);
            color: var(--text-hi);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #7cc4ff;
        }
        button {
            font-family: var(--font-sans);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input,
        textarea {
            font-family: var(--font-sans);
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        .mono {
            font-family: var(--font-mono);
        }

        /* ===== 玻璃组件 ===== */
        .glass-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
        }
        .glass-card:hover {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
            border-color: rgba(47, 168, 255, 0.4);
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #35a7ff, #0f7fe6);
            box-shadow: 0 0 20px rgba(47, 168, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(47, 168, 255, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.25);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 15px rgba(47, 168, 255, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.22);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: var(--text-hi);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(47, 168, 255, 0.5);
            color: var(--text-hi);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(0);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.85);
            border-bottom-color: rgba(47, 168, 255, 0.4);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(47, 168, 255, 0.25), rgba(15, 127, 230, 0.15));
            border: 1px solid rgba(47, 168, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            box-shadow: 0 0 15px rgba(47, 168, 255, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.2);
        }
        .logo-mark::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(47, 168, 255, 0.8);
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-text .logo-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-hi);
            letter-spacing: 0.02em;
        }
        .logo-text .logo-sub {
            font-size: 11px;
            color: var(--text-mid);
            letter-spacing: 0.12em;
            font-weight: 500;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
            margin-left: 40px;
        }
        .main-nav a {
            position: relative;
            color: var(--text-mid);
            font-size: 15px;
            font-weight: 500;
            padding: 4px 0;
            transition: color 0.2s ease;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        .main-nav a:hover {
            color: var(--text-hi);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--text-hi);
        }
        .main-nav a.active::after {
            width: 100%;
            background: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(245, 165, 36, 0.15);
            border: 1px solid rgba(245, 165, 36, 0.35);
            color: var(--accent-amber);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .status-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 6px rgba(34, 197, 139, 0.7);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.2);
            }
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #35a7ff, #0f7fe6);
            box-shadow: 0 0 15px rgba(47, 168, 255, 0.3);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 25px rgba(47, 168, 255, 0.5);
            color: #fff;
        }
        .countdown-bar {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--accent-amber);
            background: rgba(245, 165, 36, 0.08);
            border: 1px solid rgba(245, 165, 36, 0.2);
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
            font-family: var(--font-mono);
        }
        .countdown-bar .icon {
            font-size: 10px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-hi);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 999;
            background: rgba(11, 18, 32, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            display: flex;
            flex-direction: column;
            padding: 40px 30px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-12px);
            transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
        }
        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mobile-drawer a {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-hi);
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: color 0.2s ease;
        }
        .mobile-drawer a:hover {
            color: var(--primary);
        }
        .mobile-drawer a.active {
            color: var(--primary);
        }
        .mobile-drawer .drawer-cta {
            margin-top: auto;
        }
        .mobile-drawer .btn-primary {
            width: 100%;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 100px;
            background: var(--bg-0);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.55;
        }
        .hero-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 18, 32, 0.2) 0%, rgba(11, 18, 32, 0.75) 75%, var(--bg-0) 100%);
        }
        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
            background-size: 28px 28px;
            opacity: 0.25;
        }
        .hero-watermark {
            position: absolute;
            top: 120px;
            right: -40px;
            font-size: 220px;
            font-weight: 800;
            font-family: var(--font-mono);
            color: rgba(47, 168, 255, 0.08);
            letter-spacing: -0.05em;
            user-select: none;
            pointer-events: none;
            line-height: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 20px;
            text-shadow: 0 0 20px rgba(47, 168, 255, 0.3);
        }
        .hero-eyebrow::before {
            content: "";
            width: 24px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary));
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-hi);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, #35a7ff, #7cc4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 480px;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-card {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            width: 70%;
            max-width: 720px;
            padding: 20px 32px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.14);
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 8px 40px rgba(0, 0, 0, 0.3);
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .hero-card-item {
            text-align: center;
            padding: 4px 0;
        }
        .hero-card-item .label {
            font-size: 12px;
            color: var(--text-low);
            margin-bottom: 2px;
            letter-spacing: 0.04em;
        }
        .hero-card-item .value {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            font-family: var(--font-mono);
        }
        .hero-card-item .value i {
            font-style: normal;
            color: var(--success);
            font-family: var(--font-sans);
        }

        /* ===== 信任标志条 ===== */
        .trust-bar {
            background: var(--bg-1);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 28px 0;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .trust-item .num {
            font-size: 30px;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--text-hi);
            line-height: 1.2;
            background: linear-gradient(135deg, #35a7ff, #7cc4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .trust-item .label {
            font-size: 13px;
            color: var(--text-mid);
            margin-top: 4px;
        }

        /* ===== 服务版块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-head {
            margin-bottom: 48px;
            max-width: 560px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-mid);
            line-height: 1.7;
        }
        .section-head.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .service-card {
            padding: 32px;
            border-radius: var(--radius-lg);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0.4;
        }
        .service-card:hover::before {
            opacity: 0.8;
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(47, 168, 255, 0.2), rgba(47, 168, 255, 0.05));
            border: 1px solid rgba(47, 168, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 20px;
        }
        .service-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .service-card .link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            transition: gap 0.2s ease;
        }
        .service-card .link:hover {
            gap: 10px;
            color: #7cc4ff;
        }

        /* ===== 优势数据 ===== */
        .stats-section {
            background: var(--bg-1);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 80px 0;
        }
        .stats-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .stats-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
        }
        .stats-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .stats-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 18, 32, 0.5));
        }
        .stats-list {
            display: flex;
            flex-direction: column;
            gap: 36px;
        }
        .stat-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .stat-item .stat-num {
            font-size: 42px;
            font-weight: 700;
            font-family: var(--font-mono);
            line-height: 1;
            background: linear-gradient(135deg, #35a7ff, #7cc4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            min-width: 130px;
            text-shadow: 0 0 30px rgba(47, 168, 255, 0.2);
        }
        .stat-item .stat-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 4px;
        }
        .stat-item .stat-body p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
        }

        /* ===== 案例版块 ===== */
        .cases-section {
            padding: 80px 0;
            overflow: hidden;
        }
        .cases-track {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .case-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            border-color: rgba(47, 168, 255, 0.4);
        }
        .case-cover {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .case-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 18, 32, 0.7));
        }
        .case-cover .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(245, 165, 36, 0.9);
            color: #1a1305;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .case-body {
            padding: 20px 24px 24px;
        }
        .case-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 6px;
        }
        .case-body p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
        }

        /* ===== 解决方案 ===== */
        .solutions-section {
            background: var(--bg-1);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 80px 0;
        }
        .solution-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 40px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .solution-row:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .solution-row:nth-child(even) .solution-visual {
            order: -1;
        }
        .solution-text h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 12px;
        }
        .solution-text p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .solution-text ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .solution-text ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-mid);
        }
        .solution-text ul li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 6px rgba(47, 168, 255, 0.5);
            flex-shrink: 0;
        }
        .solution-visual {
            min-height: 240px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .solution-visual .vis-icon {
            font-size: 56px;
            color: var(--primary);
            opacity: 0.6;
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            padding: 80px 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            padding: 24px 28px;
            border-radius: var(--radius-md);
        }
        .news-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(47, 168, 255, 0.1);
            border: 1px solid rgba(47, 168, 255, 0.25);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .news-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-excerpt {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-low);
        }
        .news-meta a {
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-meta a:hover {
            color: #7cc4ff;
        }
        .news-empty {
            grid-column: 1 / -1;
            border: 2px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            min-height: 280px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--text-mid);
            text-align: center;
            padding: 40px;
        }
        .news-empty .empty-icon {
            font-size: 48px;
            color: var(--text-low);
            margin-bottom: 16px;
        }
        .news-empty .empty-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 8px;
        }
        .news-empty .empty-sub {
            font-size: 14px;
            color: var(--text-low);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-1);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 80px 0;
        }
        .faq-wrap {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 48px;
        }
        .faq-intro h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .faq-intro p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .faq-contact-card {
            padding: 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .faq-contact-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .faq-contact-card p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
            transition: background 0.25s ease, border-color 0.25s ease;
        }
        .faq-item.open {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(47, 168, 255, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            text-align: left;
            cursor: pointer;
            background: none;
            border: none;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text-mid);
            border-radius: 2px;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-icon::before {
            width: 2px;
            height: 16px;
            top: 2px;
            left: 9px;
        }
        .faq-icon::after {
            width: 16px;
            height: 2px;
            top: 9px;
            left: 2px;
        }
        .faq-item.open .faq-icon::before {
            transform: rotate(90deg);
            background: var(--primary);
        }
        .faq-item.open .faq-icon::after {
            background: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
        }
        .cta-panel {
            background: linear-gradient(135deg, rgba(47, 168, 255, 0.12), rgba(15, 127, 230, 0.05));
            border: 1px solid rgba(47, 168, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(47, 168, 255, 0.15);
            filter: blur(60px);
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(245, 165, 36, 0.08);
            filter: blur(50px);
        }
        .cta-panel h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-panel p {
            font-size: 16px;
            color: var(--text-mid);
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }
        .cta-panel .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 17px;
            padding: 16px 40px;
        }
        .cta-note {
            text-align: center;
            font-size: 14px;
            color: var(--text-low);
            margin-top: 20px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-1);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-mid);
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: var(--primary);
        }
        .footer-cert {
            font-size: 13px;
            color: var(--text-low);
            line-height: 1.8;
        }
        .footer-cert .cert-item {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }
        .footer-cert .cert-item i {
            color: var(--success);
            font-style: normal;
            font-size: 12px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: var(--text-low);
        }
        .footer-bottom .brand {
            color: var(--text-mid);
            font-weight: 500;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-actions .status-badge {
                display: none;
            }
            .header-actions .countdown-bar {
                display: none;
            }
            .hero-card {
                width: 90%;
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .stats-image img {
                height: 280px;
            }
            .cases-track {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .solution-row:nth-child(even) .solution-visual {
                order: 0;
            }
            .faq-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .site-header {
                height: 60px;
            }
            .mobile-drawer {
                top: 60px;
            }
            .logo-text .logo-name {
                font-size: 16px;
            }
            .logo-text .logo-sub {
                font-size: 10px;
            }
            .hero {
                padding: 120px 0 220px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-ghost {
                width: 100%;
            }
            .hero-card {
                grid-template-columns: 1fr;
                gap: 8px;
                bottom: 24px;
                width: 92%;
                padding: 16px 20px;
            }
            .hero-card-item {
                text-align: left;
                padding: 6px 0;
            }
            .section {
                padding: 48px 0;
            }
            .stats-section,
            .solutions-section,
            .faq-section {
                padding: 48px 0;
            }
            .stats-wrap {
                gap: 28px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card {
                padding: 24px;
            }
            .cases-track {
                grid-template-columns: 1fr;
                overflow-x: auto;
                scroll-snap-type: x mandatory;
            }
            .case-card {
                scroll-snap-align: start;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head p {
                font-size: 15px;
            }
            .cta-panel {
                padding: 40px 24px;
            }
            .cta-panel h2 {
                font-size: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: none;
            }
            .hero-watermark {
                font-size: 120px;
                top: 80px;
                right: -20px;
            }
        }
        @media (max-width: 420px) {
            .header-actions .countdown-bar {
                display: none;
            }
            .nav-cta-btn {
                font-size: 12px;
                padding: 8px 14px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .trust-item .num {
                font-size: 24px;
            }
            .stat-item .stat-num {
                font-size: 32px;
                min-width: 90px;
            }
        }
        @media (min-width: 1024px) {
            .hamburger {
                display: none;
            }
            .main-nav {
                display: flex;
            }
        }

/* roulang page: category1 */
:root {
  --bg-0: #0b1220;
  --bg-1: #111a2e;
  --bg-2: #18233a;
  --primary: #35a7ff;
  --primary-strong: #0f7fe6;
  --primary-glow: rgba(47, 168, 255, 0.45);
  --accent-amber: #f5a524;
  --success: #22c58b;
  --danger: #ff5d5d;
  --text-hi: #f2f6ff;
  --text-mid: #a7b4cf;
  --text-low: #63708f;
  --border-glass: rgba(255, 255, 255, 0.14);
  --glass-bg: linear-gradient(145deg, rgba(255,255,255,0.09), rgba(255,255,255,0.02));
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --container: 1200px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-hi);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 18, 32, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  border-bottom-color: rgba(47, 168, 255, 0.35);
  background: rgba(11, 18, 32, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  position: relative;
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #35a7ff, #0f7fe6);
  box-shadow: 0 0 16px rgba(47,168,255,0.4), inset 0 1px 0 rgba(255,255,255,0.25);
  position: relative;
  flex-shrink: 0;
}

.logo-mark::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 8px;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.85);
  border-radius: 6px;
  background: linear-gradient(135deg, transparent 45%, rgba(255,255,255,0.8) 45% 55%, transparent 55%);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-hi);
  white-space: nowrap;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-mid);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: 40px;
}

.main-nav a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-mid);
  padding: 6px 0;
  transition: color 0.2s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--primary-glow);
  transition: width 0.25s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-hi);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-amber);
  background: rgba(245, 165, 36, 0.12);
  border: 1px solid rgba(245, 165, 36, 0.35);
  border-radius: 999px;
  padding: 5px 12px;
  white-space: nowrap;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 8px rgba(245,165,36,0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.75); }
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text-hi);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 22px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #35a7ff, #0f7fe6);
  color: #fff;
  box-shadow: 0 0 20px rgba(47,168,255,0.35), inset 0 1px 0 rgba(255,255,255,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(47,168,255,0.55), inset 0 1px 0 rgba(255,255,255,0.25);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(47,168,255,0.4);
  outline-offset: 2px;
}

.btn-ghost {
  background: rgba(255,255,255,0.06);
  border-color: var(--border-glass);
  color: var(--text-hi);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.btn-lg {
  padding: 15px 34px;
  font-size: 16px;
}

.btn-block-lg {
  width: auto;
  min-width: 260px;
}

/* ===== Hero ===== */
.category-hero {
  position: relative;
  padding: calc(var(--header-h) + 56px) 0 56px;
  background: linear-gradient(180deg, rgba(11,18,32,0.55), rgba(11,18,32,0.92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.category-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(47,168,255,0.18), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.category-hero h1 {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--text-hi);
  margin-bottom: 14px;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-mid);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 26px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--text-mid);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--text-mid);
  transition: color 0.2s ease;
}

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

.breadcrumb .sep {
  color: var(--text-low);
}

.breadcrumb .current {
  color: var(--text-hi);
  font-weight: 600;
}

.hero-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ===== Badge ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.tag-glass {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border-glass);
  color: var(--text-mid);
}

.tag-amber {
  background: var(--accent-amber);
  color: #3b2410;
  border: none;
}

.tag-primary {
  background: rgba(47,168,255,0.15);
  border: 1px solid rgba(47,168,255,0.4);
  color: var(--primary);
}

/* ===== Main layout ===== */
.page-main {
  padding: 72px 0 48px;
  background: var(--bg-0);
  position: relative;
}

.page-main::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at top, rgba(47,168,255,0.06), transparent 70%);
  pointer-events: none;
}

.content-split {
  display: grid;
  grid-template-columns: 65fr 35fr;
  gap: 32px;
  align-items: start;
}

/* ===== Left column ===== */
.module-section {
  background: var(--glass-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
  padding: 32px;
}

.module-intro {
  font-size: 16px;
  color: var(--text-mid);
  line-height: 1.85;
  margin-bottom: 24px;
}

.module-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.module-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.1);
  transition: all 0.25s ease;
}

.module-item:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(47,168,255,0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.module-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border-glass);
  background: var(--bg-2);
}

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

.module-info {
  flex: 1;
  min-width: 0;
}

.module-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
}

.module-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-hi);
}

.module-version {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--success);
  background: rgba(34,197,139,0.12);
  border: 1px solid rgba(34,197,139,0.25);
  padding: 2px 8px;
  border-radius: 999px;
}

.module-desc {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.module-extra {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-low);
  margin-top: 6px;
}

.module-action {
  flex-shrink: 0;
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.module-action .btn {
  font-size: 14px;
  padding: 9px 18px;
}

.module-action .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-low);
}

/* ===== Sidebar ===== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.side-card {
  border-radius: var(--radius-lg);
  padding: 26px;
  border: 1px solid var(--border-glass);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}

.side-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-hi);
  display: flex;
  align-items: center;
  gap: 8px;
}

.side-card h3 i {
  color: var(--primary);
  font-style: normal;
}

.side-card p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 10px;
}

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

.side-list {
  margin-top: 6px;
}

.side-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

.side-list li::before {
  content: "›";
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  margin-top: 2px;
}

.notice-icon {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(245,165,36,0.15);
  border: 1px solid rgba(245,165,36,0.3);
  color: var(--accent-amber);
  font-size: 18px;
  margin-bottom: 12px;
}

.notice-icon.blue {
  background: rgba(47,168,255,0.12);
  border-color: rgba(47,168,255,0.3);
  color: var(--primary);
}

.contact-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 14px;
  color: var(--text-mid);
}

.contact-row:last-child {
  border-bottom: none;
}

.contact-row .icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-style: normal;
  font-size: 15px;
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 72px 0 40px;
}

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

.section-head h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-hi);
  margin-bottom: 10px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-mid);
  max-width: 640px;
  margin: 0 auto;
}

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

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

.faq-item {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item.open {
  border-color: rgba(47,168,255,0.4);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  user-select: none;
  transition: background 0.25s ease;
}

.faq-q:hover {
  background: rgba(255,255,255,0.04);
}

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(47,168,255,0.12);
  border: 1px solid rgba(47,168,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  font-weight: 600;
  font-style: normal;
  transition: transform 0.25s ease, background 0.25s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(47,168,255,0.25);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 22px;
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
}

.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 22px 20px;
}

/* ===== CTA band ===== */
.cta-band {
  padding: 56px 0 72px;
}

.cta-panel {
  position: relative;
  text-align: center;
  padding: 52px 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(47,168,255,0.12), rgba(255,255,255,0.02)), var(--bg-1);
  border: 1px solid rgba(47,168,255,0.3);
  box-shadow: 0 0 40px rgba(47,168,255,0.15), inset 0 1px 0 rgba(255,255,255,0.12);
  overflow: hidden;
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 180px;
  background: radial-gradient(ellipse, rgba(47,168,255,0.25), transparent 70%);
  pointer-events: none;
}

.cta-panel h2 {
  font-size: 30px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 12px;
}

.cta-panel p {
  font-size: 15px;
  color: var(--text-mid);
  margin-bottom: 26px;
}

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

.cta-note {
  font-size: 13px;
  color: var(--text-low);
  margin-top: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-1);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 52px;
}

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

.footer-brand p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 16px;
}

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

.footer-col ul a {
  font-size: 14px;
  color: var(--text-mid);
  transition: color 0.2s ease;
}

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

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

.cert-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-mid);
}

.cert-item i {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(34,197,139,0.15);
  color: var(--success);
  font-style: normal;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 16px 0;
  text-align: center;
  background: rgba(0,0,0,0.2);
}

.footer-bottom .brand {
  font-size: 13px;
  color: var(--text-low);
}

/* ===== Mobile drawer ===== */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(11,18,32,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(47,168,255,0.25);
  padding: 24px 24px 30px;
  transform: translateY(-120%);
  transition: transform 0.3s ease;
}

.mobile-drawer.open {
  transform: translateY(0);
}

.mobile-drawer .main-nav {
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin: 0 0 20px;
}

.mobile-drawer .main-nav a {
  font-size: 20px;
  padding: 10px 0;
  color: var(--text-hi);
  display: block;
  width: 100%;
}

.mobile-drawer .main-nav a::after {
  display: none;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .content-split {
    grid-template-columns: 1fr;
  }

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

  .main-nav {
    display: none;
  }

  .header-actions .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-drawer {
    display: block;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .container {
    padding: 0 16px;
  }

  .category-hero {
    padding: calc(var(--header-h) + 36px) 0 36px;
  }

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

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

  .page-main {
    padding: 48px 0 32px;
  }

  .section-head h2 {
    font-size: 24px;
  }

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

  .module-section {
    padding: 20px;
  }

  .module-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .module-thumb {
    width: 100%;
    height: 120px;
  }

  .module-action {
    align-items: flex-start;
    width: 100%;
  }

  .module-action .btn {
    width: 100%;
  }

  .cta-panel {
    padding: 34px 20px;
  }

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

  .cta-btns .btn {
    width: 100%;
    max-width: 340px;
  }

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

  .footer-brand p {
    max-width: 100%;
  }

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

  .logo-sub {
    font-size: 10px;
  }

  .status-badge {
    font-size: 11px;
    padding: 4px 10px;
  }
}

@media (max-width: 520px) {
  .header-actions .status-badge span:not(.pulse-dot) {
    display: none;
  }

  .header-actions .status-badge {
    padding: 5px;
  }

  .cta-panel h2 {
    font-size: 22px;
  }

  .faq-q {
    font-size: 15px;
    padding: 16px 18px;
  }

  .faq-a {
    padding: 0 18px;
  }

  .faq-item.open .faq-a {
    padding: 0 18px 18px;
  }
}

@media print {
  body {
    background: #fff;
    color: #222;
  }

  .site-header,
  .mobile-drawer,
  .footer-bottom,
  .cta-band {
    display: none;
  }
}

/* roulang page: article */
:root {
            --bg-0: #0b1220;
            --bg-1: #111a2e;
            --bg-2: #18233a;
            --primary: #35a7ff;
            --primary-strong: #0f7fe6;
            --primary-glow: rgba(47, 168, 255, 0.45);
            --accent-amber: #f5a524;
            --success: #22c58b;
            --danger: #ff5d5d;
            --text-hi: #f2f6ff;
            --text-mid: #a7b4cf;
            --text-low: #63708f;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-hi);
            background: var(--bg-0);
            background-image:
                radial-gradient(ellipse at 20% 0%, rgba(47, 168, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 100%, rgba(47, 168, 255, 0.05) 0%, transparent 50%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: #6bbdff;
        }

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

        ul,
        ol {
            padding-left: 0;
            list-style: none;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            cursor: pointer;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #35a7ff, #0f7fe6);
            color: #fff;
            box-shadow: 0 0 20px var(--primary-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(47, 168, 255, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.25);
            color: #fff;
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.18);
            color: var(--text-hi);
            backdrop-filter: blur(8px);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(47, 168, 255, 0.08);
            color: var(--primary);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            z-index: 100;
            background: rgba(11, 18, 32, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, border-color 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.88);
            border-bottom-color: rgba(47, 168, 255, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

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

        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(47, 168, 255, 0.25), rgba(47, 168, 255, 0.08));
            border: 1px solid rgba(47, 168, 255, 0.4);
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 14px rgba(47, 168, 255, 0.25);
        }

        .logo-mark::before {
            content: "";
            position: absolute;
            top: 7px;
            left: 7px;
            width: 14px;
            height: 14px;
            border: 2px solid var(--primary);
            border-radius: 3px;
            transform: rotate(45deg);
        }

        .logo-mark::after {
            content: "";
            position: absolute;
            bottom: 4px;
            right: 5px;
            width: 0;
            height: 0;
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
            border-bottom: 8px solid var(--accent-amber);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo-name {
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-hi);
            line-height: 1.2;
        }

        .logo-sub {
            font-size: 11px;
            color: var(--text-low);
            letter-spacing: 0.08em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
        }

        .main-nav a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-mid);
            padding: 8px 2px;
            transition: color 0.2s ease;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

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

        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }

        .main-nav a.active {
            color: #fff;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-amber);
            background: rgba(245, 165, 36, 0.08);
            border: 1px solid rgba(245, 165, 36, 0.25);
            padding: 5px 12px;
            border-radius: 999px;
        }

        .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-amber);
            position: relative;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(245, 165, 36, 0.5);
            }
            70% {
                box-shadow: 0 0 0 8px rgba(245, 165, 36, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(245, 165, 36, 0);
            }
        }

        .nav-cta {
            padding: 10px 22px;
            font-size: 13px;
        }

        .nav-cta-mobile {
            display: none;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 0;
            cursor: pointer;
            padding: 10px;
            z-index: 110;
        }

        .menu-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text-hi);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        body.nav-open .menu-toggle span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        body.nav-open .menu-toggle span:nth-child(2) {
            opacity: 0;
        }

        body.nav-open .menu-toggle span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            margin-top: 72px;
            background: rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 14px 24px;
            font-size: 13px;
            color: var(--text-mid);
        }

        .breadcrumb a {
            color: var(--text-mid);
            transition: color 0.2s ease;
        }

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

        .breadcrumb .sep {
            color: var(--text-low);
        }

        .breadcrumb .current {
            color: var(--text-hi);
            font-weight: 600;
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 48px;
            background:
                linear-gradient(rgba(11, 18, 32, 0.78), rgba(11, 18, 32, 0.92)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
        }

        .article-hero::after {
            content: "";
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(47, 168, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .article-hero h1 {
            font-size: 32px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-hi);
            max-width: 820px;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--text-mid);
        }

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

        .article-meta .meta-cat {
            display: inline-flex;
            align-items: center;
            background: rgba(47, 168, 255, 0.12);
            border: 1px solid rgba(47, 168, 255, 0.3);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Article Body ===== */
        .article-entry {
            padding: 48px 0 24px;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.8;
            color: #d8e0f0;
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-hi);
            margin: 44px 0 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-hi);
            margin: 32px 0 14px;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 28px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 28px 24px;
            padding-left: 0;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 10px;
            position: relative;
            padding-left: 6px;
        }

        .article-body ul li::before {
            content: "";
            position: absolute;
            left: -20px;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(47, 168, 255, 0.4);
        }

        .article-body ol {
            counter-reset: article-ol;
        }

        .article-body ol li {
            counter-increment: article-ol;
            padding-left: 8px;
        }

        .article-body ol li::before {
            content: counter(article-ol) ".";
            position: absolute;
            left: -26px;
            top: 0;
            font-weight: 600;
            color: var(--primary);
            font-family: var(--font-mono);
            font-size: 14px;
        }

        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(47, 168, 255, 0.06);
            padding: 18px 22px;
            margin: 28px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-mid);
            font-size: 15px;
        }

        .article-body pre {
            background: var(--bg-1);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 22px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-family: var(--font-mono);
            font-size: 14px;
            line-height: 1.6;
            color: #c9d6ec;
            margin: 28px 0;
        }

        .article-body code {
            font-family: var(--font-mono);
            font-size: 0.9em;
            background: rgba(47, 168, 255, 0.1);
            padding: 2px 6px;
            border-radius: 4px;
            color: var(--primary);
        }

        .article-body pre code {
            background: none;
            padding: 0;
            color: inherit;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 32px 0;
            font-size: 14px;
            line-height: 1.6;
            overflow: hidden;
            border-radius: var(--radius-md);
        }

        .article-body th {
            background: var(--bg-2);
            padding: 13px 16px;
            text-align: left;
            color: var(--text-hi);
            font-weight: 600;
            border-bottom: 2px solid var(--primary);
        }

        .article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-mid);
            background: rgba(255, 255, 255, 0.015);
        }

        .article-body tr:nth-child(even) td {
            background: rgba(255, 255, 255, 0.03);
        }

        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 28px 0;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* Article tools */
        .article-tools {
            max-width: 760px;
            margin: 40px auto 0;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-mid);
            transition: all 0.2s ease;
        }

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

        .share-row {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-mid);
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 34px;
            padding: 0 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-mid);
            font-size: 12px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .share-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(47, 168, 255, 0.08);
        }

        /* ===== Related ===== */
        .related-section {
            padding: 56px 0;
            background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.015) 20%, rgba(255, 255, 255, 0.015) 80%, transparent);
        }

        .related-section .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-hi);
            text-align: center;
            margin-bottom: 36px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 36px;
        }

        .related-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
            border-color: rgba(47, 168, 255, 0.4);
        }

        .related-thumb {
            height: 150px;
            background: var(--bg-1);
            overflow: hidden;
            position: relative;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }

        .related-thumb .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(11, 18, 32, 0.65);
            border-color: rgba(47, 168, 255, 0.35);
            color: var(--text-hi);
            font-size: 11px;
            backdrop-filter: blur(6px);
        }

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

        .related-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-hi);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card p {
            font-size: 13px;
            color: var(--text-mid);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .back-action {
            display: flex;
            justify-content: center;
        }

        /* ===== Not Found ===== */
        .not-found-wrap {
            padding: 100px 0 120px;
            text-align: center;
        }

        .not-found-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 28px;
            border-radius: 24px;
            background: rgba(47, 168, 255, 0.08);
            border: 1px solid rgba(47, 168, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: var(--primary);
            box-shadow: 0 0 35px rgba(47, 168, 255, 0.15);
        }

        .not-found-wrap h1 {
            font-size: 30px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 12px;
        }

        .not-found-wrap p {
            color: var(--text-mid);
            font-size: 15px;
            margin-bottom: 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-1);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 56px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

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

        .footer-col ul a {
            color: var(--text-mid);
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

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

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

        .cert-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-mid);
        }

        .cert-item i {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(34, 197, 139, 0.15);
            border: 1px solid rgba(34, 197, 139, 0.4);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            color: var(--success);
            font-style: normal;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            background: rgba(0, 0, 0, 0.2);
        }

        .footer-bottom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom span {
            font-size: 13px;
            color: var(--text-low);
        }

        .footer-bottom .brand {
            color: var(--text-mid);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                height: 60px;
            }

            .header-inner {
                gap: 12px;
            }

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

            .logo-sub {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .header-actions {
                display: none;
            }

            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(11, 18, 32, 0.97);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 20px 24px 28px;
                transform: translateY(-120%);
                visibility: hidden;
                transition: transform 0.3s ease, visibility 0.3s ease;
                z-index: 99;
                border-bottom: 1px solid rgba(47, 168, 255, 0.25);
                margin-left: 0;
            }

            .main-nav a {
                font-size: 17px;
                padding: 13px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav .nav-cta-mobile {
                display: flex;
                justify-content: center;
                margin-top: 18px;
                border-bottom: none;
            }

            body.nav-open .main-nav {
                transform: translateY(0);
                visibility: visible;
            }

            .breadcrumb-wrap {
                margin-top: 60px;
            }

            .breadcrumb {
                padding: 12px 16px;
                font-size: 12px;
            }

            .breadcrumb .current {
                max-width: 140px;
            }

            .article-hero {
                padding: 40px 0 32px;
            }

            .article-hero h1 {
                font-size: 24px;
                line-height: 1.35;
            }

            .article-meta {
                gap: 12px;
                font-size: 12px;
                flex-wrap: wrap;
            }

            .article-entry {
                padding: 32px 0 16px;
            }

            .article-body {
                font-size: 15px;
                line-height: 1.75;
            }

            .article-body h2 {
                font-size: 21px;
            }

            .article-body h3 {
                font-size: 17px;
            }

            .article-body table {
                font-size: 12px;
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-thumb {
                height: 120px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 28px;
            }

            .footer-bottom .container {
                justify-content: center;
                text-align: center;
            }
        }

        @media (max-width: 420px) {
            .status-badge {
                display: none;
            }
        }