/* roulang page: index */
:root {
            --bg-base: #0B1533;
            --bg-elevated: #0F1B3F;
            --bg-deep: #0A1028;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --border-glass: rgba(255, 255, 255, 0.12);
            --primary: #00D8FF;
            --primary-deep: #00A8CC;
            --accent: #FFB854;
            --success: #10C47B;
            --danger: #FF5C7A;
            --text-main: #EAF2FF;
            --text-sub: #B0C4E8;
            --text-muted: #7A8FBF;
            --focus-ring: rgba(0, 216, 255, 0.35);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: inset 0 1px 0 rgba(255, 255, 255, 0.08);
            --shadow-glow: 0 4px 16px rgba(0, 216, 255, 0.4);
            --transition-base: 0.3s ease;
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
            --font-mono: "Roboto Mono", "JetBrains Mono", monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        ::selection {
            background: rgba(0, 216, 255, 0.2);
            color: #fff;
        }

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

        .container .row {
            max-width: 100%;
            margin: 0 -12px;
        }

        .container .row > .columns {
            padding-left: 12px;
            padding-right: 12px;
        }

        .row .columns {
            margin-bottom: 0;
        }

        .section {
            padding: 100px 0;
            position: relative;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .section-header.text-center {
            justify-content: center;
            text-align: center;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .section-sub {
            font-size: 14px;
            color: var(--text-muted);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 21, 51, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            height: 72px;
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 21, 51, 0.85);
            box-shadow: 0 1px 0 rgba(0, 216, 255, 0.25);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            margin-right: 48px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }

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

        .main-nav a:not(.btn-primary) {
            font-size: 15px;
            color: var(--text-sub);
            position: relative;
            padding: 8px 0;
            display: inline-block;
        }

        .main-nav a:not(.btn-primary)::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(0, 216, 255, 0.6);
            transition: width 0.3s ease;
            border-radius: 2px;
        }

        .main-nav a:not(.btn-primary):hover {
            color: var(--primary);
        }

        .main-nav a:not(.btn-primary):hover::after,
        .main-nav a.active::after {
            width: 100%;
        }

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

        .main-nav .nav-cta {
            margin-left: 8px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #00D8FF, #00B4D8);
            color: #04101F;
            font-size: 16px;
            font-weight: 600;
            height: 48px;
            padding: 0 24px;
            border-radius: 10px;
            border: none;
            box-shadow: 0 4px 16px rgba(0, 216, 255, 0.4), 0 0 0 1px rgba(0, 216, 255, 0.3) inset;
            transition: filter 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            line-height: 1;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(0, 216, 255, 0.5), 0 0 0 1px rgba(0, 216, 255, 0.4) inset;
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(1);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 15px;
            height: 44px;
            padding: 0 22px;
            border-radius: 10px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            line-height: 1;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 216, 255, 0.05);
        }

        .btn-lg {
            height: 52px;
            padding: 0 30px;
            font-size: 16px;
        }

        .text-link {
            color: var(--primary);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .text-link i {
            transition: transform 0.3s ease;
            font-size: 12px;
        }

        .text-link:hover i {
            transform: translateX(4px);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            align-items: center;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .hero {
            min-height: 80vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, var(--bg-base), var(--bg-deep));
            overflow: hidden;
            padding: 100px 0 80px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(0, 216, 255, 0.08), transparent 40%, rgba(0, 216, 255, 0.04) 70%, transparent);
            pointer-events: none;
        }

        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 216, 255, 0.08), transparent 70%);
            pointer-events: none;
        }

        .hero-glow.glow-1 {
            top: -100px;
            right: -150px;
        }

        .hero-glow.glow-2 {
            bottom: -100px;
            left: 30%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 216, 255, 0.05), transparent 70%);
        }

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

        .hero-content {
            padding-right: 20px;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #FFFFFF, #B0EFFF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            display: inline-block;
        }

        .hero-sub {
            font-size: 16px;
            font-weight: 500;
            color: var(--accent);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .hero-status {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            display: inline-block;
        }

        .dot-green {
            background: var(--success);
            box-shadow: 0 0 8px rgba(16, 196, 123, 0.7);
        }

        .dot-cyan {
            background: var(--primary);
            box-shadow: 0 0 8px rgba(0, 216, 255, 0.7);
        }

        .dot-gold {
            background: var(--accent);
            box-shadow: 0 0 8px rgba(255, 184, 84, 0.7);
        }

        .hero-side {
            display: flex;
            justify-content: flex-end;
        }

        .login-card {
            width: 100%;
            max-width: 350px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card), 0 20px 60px rgba(0, 0, 20, 0.4);
        }

        .login-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .login-card .login-sub {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 8px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            background: rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            color: var(--text-main);
            font-size: 15px;
            padding: 12px 16px;
            outline: none;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .form-group input,
        .form-group select {
            height: 44px;
        }

        .form-group textarea {
            height: 100px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 12px var(--focus-ring);
            outline: none;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
        }

        .form-group select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2300D8FF' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }

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

        .login-links {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 14px;
        }

        .login-links a {
            color: var(--text-muted);
            transition: color 0.3s ease;
        }

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

        .login-tip {
            margin-top: 14px;
            padding: 10px 12px;
            background: rgba(0, 216, 255, 0.08);
            border: 1px solid rgba(0, 216, 255, 0.2);
            border-radius: 8px;
            font-size: 13px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .login-tip i {
            color: var(--primary);
        }

        .stats-section {
            padding-top: 70px;
        }

        .stat-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 216, 255, 0.5);
            box-shadow: 0 8px 32px rgba(0, 0, 20, 0.4), var(--shadow-card);
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            display: block;
            margin-bottom: 10px;
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 44px;
            font-weight: 700;
            color: var(--primary);
            text-shadow: 0 0 20px rgba(0, 216, 255, 0.5);
            line-height: 1.2;
        }

        .stat-card:hover .stat-number {
            text-shadow: 0 0 32px rgba(0, 216, 255, 0.7);
        }

        .stat-trend {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 10px;
        }

        .stat-trend .up {
            color: var(--success);
        }

        .services-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 216, 255, 0.05), transparent 70%);
            top: 10%;
            left: -200px;
            pointer-events: none;
        }

        .service-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 216, 255, 0.5);
            box-shadow: 0 8px 32px rgba(0, 0, 20, 0.4);
        }

        .service-card.feature-bg {
            background-image: linear-gradient(180deg, rgba(15, 27, 63, 0.9), rgba(11, 21, 51, 0.94)), url('/assets/images/coverpic/cover-1.png');
            background-size: cover;
            background-position: center;
            backdrop-filter: none;
        }

        .service-card.feature-bg-2 {
            background-image: linear-gradient(180deg, rgba(15, 27, 63, 0.9), rgba(11, 21, 51, 0.94)), url('/assets/images/coverpic/cover-2.png');
            background-size: cover;
            background-position: center;
            backdrop-filter: none;
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 216, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            transition: background 0.3s ease;
            flex-shrink: 0;
        }

        .service-icon svg {
            width: 24px;
            height: 24px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 1.5;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .service-card:hover .service-icon {
            background: rgba(0, 216, 255, 0.15);
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .service-card .text-link {
            margin-top: auto;
        }

        .compare-section::after {
            content: '';
            position: absolute;
            width: 450px;
            height: 450px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 184, 84, 0.04), transparent 70%);
            bottom: 0;
            right: -150px;
            pointer-events: none;
        }

        .compare-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .compare-card.better {
            background: rgba(0, 216, 255, 0.06);
            border-color: rgba(0, 216, 255, 0.3);
        }

        .compare-card:hover {
            border-color: rgba(0, 216, 255, 0.5);
            box-shadow: 0 8px 32px rgba(0, 0, 20, 0.3);
        }

        .compare-head {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .compare-head h3 {
            font-size: 18px;
            font-weight: 600;
        }

        .compare-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .compare-icon.negative {
            background: rgba(255, 92, 122, 0.15);
            color: var(--danger);
        }

        .compare-icon.positive {
            background: rgba(16, 196, 123, 0.15);
            color: var(--success);
        }

        .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .compare-label {
            font-size: 14px;
            color: var(--text-sub);
        }

        .compare-value {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
        }

        .compare-card.better .compare-value {
            color: var(--primary);
            text-shadow: 0 0 12px rgba(0, 216, 255, 0.4);
        }

        .news-section {
            background: linear-gradient(180deg, rgba(15, 27, 63, 0.4), rgba(11, 21, 51, 0.6));
        }

        .news-list .news-row {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid transparent;
            transition: background 0.3s ease, border-color 0.3s ease;
            margin-bottom: 16px;
        }

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

        .news-list .news-row:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(0, 216, 255, 0.2);
        }

        .news-thumb {
            width: 96px;
            height: 64px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

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

        .news-thumb-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 20px;
        }

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

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }

        .tag {
            display: inline-block;
            background: rgba(0, 216, 255, 0.15);
            color: var(--primary);
            font-size: 12px;
            padding: 4px 8px;
            border-radius: 4px;
            line-height: 1.4;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 4px;
            transition: color 0.3s ease;
        }

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

        .news-summary {
            font-size: 14px;
            color: var(--text-sub);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .read-more {
            color: var(--primary);
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 4px;
            transition: gap 0.3s ease;
        }

        .read-more:hover {
            gap: 8px;
        }

        .empty-tip {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 14px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed var(--border-glass);
            border-radius: var(--radius-lg);
        }

        .faq-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 216, 255, 0.04), transparent 70%);
            top: 20%;
            right: -120px;
            pointer-events: none;
        }

        .faq-list {
            max-width: 880px;
            margin: 0 auto;
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 0 28px;
            box-shadow: var(--shadow-card);
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.3s ease;
            gap: 16px;
        }

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

        .faq-q.active {
            color: var(--primary);
        }

        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(0, 216, 255, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 14px;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-q.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 216, 255, 0.2);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
            padding: 0 30px 0 0;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
            opacity: 0;
        }

        .faq-a.open {
            max-height: 400px;
            padding-bottom: 20px;
            opacity: 1;
        }

        .contact-section {
            background: linear-gradient(180deg, rgba(11, 21, 51, 0.8), rgba(15, 27, 63, 0.6));
        }

        .contact-desc {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .contact-info {
            margin-bottom: 24px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-sub);
        }

        .contact-item i {
            width: 18px;
            text-align: center;
            color: var(--primary);
            font-size: 16px;
        }

        .contact-media {
            margin-top: 12px;
        }

        .contact-img {
            border-radius: 12px;
            width: 100%;
            max-width: 480px;
            object-fit: cover;
            box-shadow: 0 12px 40px rgba(0, 0, 20, 0.4);
        }

        .contact-form {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }

        .contact-form .form-group select {
            background-color: rgba(0, 0, 0, 0.25);
        }

        .form-privacy {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 16px;
        }

        .submit-btn {
            width: 100%;
        }

        .form-success {
            margin-top: 16px;
            padding: 14px 16px;
            background: rgba(16, 196, 123, 0.1);
            border: 1px solid rgba(16, 196, 123, 0.3);
            border-radius: 8px;
            font-size: 14px;
            color: var(--success);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .site-footer {
            border-top: 1px solid rgba(0, 216, 255, 0.2);
            background: var(--bg-elevated);
            padding: 56px 0 24px;
            margin-top: 100px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-links a {
            display: block;
            font-size: 14px;
            color: var(--text-sub);
            padding: 4px 0;
            transition: color 0.3s ease;
        }

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

        .footer-contact {
            display: block;
            font-size: 14px;
            color: var(--text-sub);
            padding: 4px 0;
        }

        .copyright {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
        }

        @media (max-width: 1023px) {
            .main-nav {
                gap: 18px;
            }

            .main-nav a:not(.btn-primary) {
                font-size: 15px;
            }

            .logo-text {
                font-size: 16px;
            }

            .hero-title {
                font-size: 40px;
            }

            .stat-number {
                font-size: 38px;
            }

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

        @media (max-width: 767px) {
            .site-header {
                height: 64px;
            }

            .header-inner {
                height: 64px;
            }

            .logo {
                margin-right: 0;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
            }

            .logo-text {
                font-size: 16px;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 21, 51, 0.95);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px 20px;
                gap: 0;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }

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

            .main-nav a:not(.btn-primary) {
                font-size: 18px;
                line-height: 56px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                padding: 0;
                display: block;
            }

            .main-nav a:not(.btn-primary)::after {
                display: none;
            }

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

            .main-nav .nav-cta {
                margin: 16px 0 0;
            }

            .hamburger {
                display: flex;
            }

            .hero {
                min-height: auto;
                padding: 60px 0;
            }

            .hero-content {
                padding-right: 0;
                margin-bottom: 40px;
            }

            .hero-title {
                font-size: 30px;
            }

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

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

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

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

            .hero-side {
                justify-content: center;
            }

            .login-card {
                max-width: 100%;
            }

            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .section-sub {
                font-size: 13px;
            }

            .section-header {
                margin-bottom: 28px;
            }

            .stats-section {
                padding-top: 40px;
            }

            .stat-number {
                font-size: 32px;
            }

            .service-card {
                padding: 20px;
            }

            .compare-card {
                margin-bottom: 16px;
                padding: 22px;
            }

            .news-list .news-row {
                padding: 16px;
                gap: 14px;
            }

            .news-thumb {
                width: 80px;
                height: 56px;
            }

            .news-title {
                font-size: 16px;
                white-space: normal;
                overflow: visible;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 2;
                line-clamp: 2;
            }

            .news-summary {
                white-space: normal;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 2;
                line-clamp: 2;
                font-size: 13px;
            }

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

            .faq-q {
                font-size: 15px;
                padding: 16px 0;
            }

            .faq-a {
                padding-right: 20px;
            }

            .contact-form {
                margin-top: 24px;
                padding: 24px;
            }

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

            .site-footer {
                margin-top: 56px;
                padding-top: 40px;
            }

            .row .columns {
                margin-bottom: 16px;
            }

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

        @media (max-width: 479px) {
            .hero-title {
                font-size: 28px;
            }

            .stat-number {
                font-size: 30px;
            }

            .news-list .news-row {
                flex-direction: column;
            }

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

            .news-thumb img,
            .news-thumb-placeholder {
                width: 100%;
                height: 100%;
            }

            .main-nav a:not(.btn-primary) {
                font-size: 16px;
                line-height: 48px;
            }

            .btn-lg {
                padding: 0 20px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: category1 */
:root {
    --bg-base: #0B1533;
    --bg-elevated: #0F1B3F;
    --surface-glass: rgba(255,255,255,0.06);
    --border-glass: rgba(255,255,255,0.12);
    --primary: #00D8FF;
    --primary-deep: #00A8CC;
    --accent: #FFB854;
    --success: #10C47B;
    --danger: #FF5C7A;
    --text-main: #EAF2FF;
    --text-sub: #B0C4E8;
    --text-muted: #7A8FBF;
    --focus-ring: #00D8FF;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 8px;
    --shadow-card: inset 0 1px 0 rgba(255,255,255,0.08);
    --shadow-glow: 0 0 20px rgba(0,216,255,0.35);
    --gap-section: 100px;
    --gap-section-mobile: 56px;
    --container-max: 1200px;
    --font-cn: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
    --font-num: "Roboto Mono", "JetBrains Mono", monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-cn);
    background: var(--bg-base);
    color: var(--text-main);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: var(--text-main); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }
.row { max-width: none; }
.columns { padding: 0 12px; }

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(11,21,51,0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease;
}
.site-header.scrolled {
    background: rgba(11,21,51,0.85);
    border-bottom-color: rgba(0,216,255,0.25);
}
.header-inner {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    margin-right: 48px;
}
.logo-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}
.brand-logo span {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 1px;
    white-space: nowrap;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: flex-end;
}
.main-nav a {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    font-size: 15px;
    font-weight: 400;
    color: var(--text-sub);
    border-radius: 6px;
    position: relative;
    transition: color 0.3s ease;
    white-space: nowrap;
}
.main-nav a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary);
    box-shadow: 0 0 8px rgba(0,216,255,0.6);
    border-radius: 2px;
    transition: width 0.3s ease;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 24px; }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after {
    width: 24px;
    box-shadow: 0 0 10px rgba(0,216,255,0.7);
}
.main-nav .nav-cta {
    margin-left: 12px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    background: linear-gradient(135deg, #00D8FF, #00B4D8);
    color: #04101F;
    box-shadow: 0 4px 16px rgba(0,216,255,0.4), inset 0 0 0 1px rgba(0,216,255,0.3);
    transition: filter 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
}
.main-nav .nav-cta::after { display: none; }
.main-nav .nav-cta:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0,216,255,0.5), inset 0 0 0 1px rgba(0,216,255,0.4);
    color: #04101F;
}
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-elevated);
    border-top: 1px solid rgba(0,216,255,0.2);
    padding: 56px 0 0;
    margin-top: 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-brand { display: flex; flex-direction: column; gap: 12px; }
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
}
.footer-logo .logo-icon { width: 28px; height: 28px; }
.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 260px;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a,
.footer-links span {
    font-size: 14px;
    color: var(--text-sub);
    transition: color 0.3s ease;
}
.footer-links a:hover { color: var(--primary); }
.footer-contact { display: block; cursor: default; }
.copyright {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    padding: 16px 0 0;
    font-size: 13px;
    color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 6px; color: rgba(255,255,255,0.3); }
.breadcrumb .current { color: var(--text-main); }

/* ===== Page Hero ===== */
.page-hero {
    position: relative;
    padding: 48px 0 72px;
    background:
        linear-gradient(135deg, rgba(11,21,51,0.92) 0%, rgba(10,16,40,0.85) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,216,255,0.08) 0%, transparent 70%);
    top: -120px;
    right: -100px;
    pointer-events: none;
}
.page-hero::after {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,184,84,0.05) 0%, transparent 70%);
    bottom: -60px;
    left: 10%;
    pointer-events: none;
}
.page-hero .hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}
.page-hero h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.5px;
    color: var(--text-main);
    margin: 16px 0 16px;
    background: linear-gradient(90deg, #FFFFFF, #B0EFFF);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-hero .hero-sub {
    font-size: 16px;
    color: var(--text-sub);
    line-height: 1.7;
    max-width: 600px;
}

/* ===== Section common ===== */
.section-block { padding: var(--gap-section) 0; position: relative; }
.section-block:nth-child(even) { background: rgba(255,255,255,0.02); }
.section-head {
    margin-bottom: 40px;
}
.section-head h2 {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: 8px;
}
.section-head p {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 620px;
}

/* ===== Category Description ===== */
.cate-desc { padding: 72px 0; }
.cate-desc .desc-text p {
    font-size: 16px;
    color: var(--text-sub);
    line-height: 1.8;
    margin-bottom: 20px;
}
.cate-desc .desc-text p strong { color: var(--primary); font-weight: 600; }
.cate-desc .desc-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: 0 8px 32px rgba(0,0,20,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
    border: 1px solid var(--border-glass);
}
.cate-desc .desc-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 280px;
}
.cate-desc .desc-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(11,21,51,0) 40%, rgba(11,21,51,0.5) 100%);
}

/* ===== Scenario Cards ===== */
.scenario-card {
    background: var(--surface-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 28px 24px;
    height: 100%;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.scenario-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,216,255,0.5);
    box-shadow: 0 8px 32px rgba(0,0,20,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
}
.scenario-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(0,216,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    transition: background 0.3s ease;
}
.scenario-card:hover .scenario-icon { background: rgba(0,216,255,0.15); }
.scenario-icon svg { width: 22px; height: 22px; stroke: var(--primary); }
.scenario-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 10px;
    line-height: 1.4;
}
.scenario-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
}

/* ===== Process Steps ===== */
.process-section { position: relative; }
.process-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 24px;
    margin-top: 40px;
    position: relative;
}
.process-grid::before {
    content: "";
    position: absolute;
    top: 32px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0,216,255,0.1), rgba(0,216,255,0.4), rgba(0,216,255,0.1));
    border-radius: 2px;
    z-index: 0;
}
.process-step {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 8px;
}
.step-num {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00D8FF, #00B4D8);
    color: #04101F;
    font-family: var(--font-num);
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 4px 20px rgba(0,216,255,0.4), inset 0 1px 0 rgba(255,255,255,0.3);
}
.process-step h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
    line-height: 1.4;
}
.process-step p {
    font-size: 13px;
    color: var(--text-sub);
    line-height: 1.6;
}

/* ===== Guide Cards ===== */
.guide-card {
    background: var(--surface-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.guide-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,216,255,0.5);
    box-shadow: 0 8px 32px rgba(0,0,20,0.4);
}
.guide-card-img {
    height: 160px;
    overflow: hidden;
    position: relative;
}
.guide-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.guide-card:hover .guide-card-img img { transform: scale(1.04); }
.guide-card-img .tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(0,216,255,0.9);
    color: #04101F;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 4px;
    z-index: 2;
}
.guide-card-body {
    padding: 20px 20px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.guide-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
    margin-bottom: 8px;
}
.guide-card-body p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 16px;
}
.guide-card-body .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}
.guide-card-body .card-link {
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.3s ease;
}
.guide-card-body .card-link:hover { gap: 8px; color: var(--primary); }

/* ===== FAQ ===== */
.faq-wrap {
    max-width: 880px;
    margin: 0 auto;
}
.faq-item {
    background: var(--surface-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}
.faq-item.active { border-color: rgba(0,216,255,0.4); }
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    transition: color 0.3s ease;
}
.faq-question:hover { color: var(--primary); }
.faq-item.active .faq-question { color: var(--primary); }
.faq-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid rgba(0,216,255,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 24px;
    transition: max-height 0.3s ease, padding 0.3s ease;
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
}
.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0,216,255,0.05) 0%, transparent 100%);
}
.cta-box {
    background: var(--surface-glass);
    border: 1px solid rgba(0,216,255,0.2);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 48px 32px;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
    position: relative;
}
.cta-box::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0,216,255,0.5), transparent);
    border-radius: 2px;
}
.cta-box h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 12px;
    line-height: 1.4;
}
.cta-box p {
    font-size: 15px;
    color: var(--text-sub);
    margin-bottom: 28px;
}
.btn-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #00D8FF, #00B4D8);
    color: #04101F;
    font-size: 16px;
    font-weight: 600;
    height: 48px;
    padding: 0 24px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,216,255,0.4), inset 0 0 0 1px rgba(0,216,255,0.3);
    transition: filter 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}
.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0,216,255,0.5), inset 0 0 0 1px rgba(0,216,255,0.4);
    color: #04101F;
}
.btn-primary:active {
    transform: translateY(0);
    filter: brightness(1.0);
}
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    color: var(--text-main);
    font-size: 16px;
    font-weight: 400;
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease, transform 0.3s ease;
    text-decoration: none;
}
.btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0,216,255,0.05);
    transform: translateY(-2px);
}
.btn-ghost:active { transform: translateY(0); }

/* ===== Section glow effects ===== */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .main-nav a { padding: 8px 10px; font-size: 14px; }
    .brand-logo { margin-right: 24px; }
    .process-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .process-grid::before { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
    :root { --gap-section: 56px; }
    .site-header { height: 60px; }
    .header-inner { height: 60px; }
    .main-nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(11,21,51,0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px 24px;
        gap: 0;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        border-bottom: 1px solid rgba(0,216,255,0.2);
        z-index: 999;
    }
    .main-nav.open { transform: translateY(0); }
    .main-nav a {
        width: 100%;
        padding: 14px 0;
        font-size: 17px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        border-radius: 0;
    }
    .main-nav a::after { display: none; }
    .main-nav .nav-cta {
        width: 100%;
        margin: 16px 0 0;
        justify-content: center;
        height: 48px;
    }
    .hamburger { display: block; }
    .page-hero { padding: 40px 0 48px; }
    .page-hero h1 { font-size: 28px; }
    .page-hero .hero-sub { font-size: 14px; }
    .section-block { padding: var(--gap-section-mobile) 0; }
    .section-head h2 { font-size: 22px; }
    .process-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .process-step { padding: 0 4px; }
    .step-num { width: 52px; height: 52px; font-size: 18px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .cate-desc { padding: 48px 0; }
    .cta-section { padding: 56px 0; }
    .cta-box { padding: 36px 24px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .page-hero h1 { font-size: 24px; }
    .process-grid { grid-template-columns: 1fr; gap: 20px; }
    .scenario-card { padding: 20px; }
    .faq-question { padding: 16px 16px; font-size: 15px; }
    .faq-answer { padding: 0 16px; }
    .faq-item.active .faq-answer { padding: 0 16px 16px; }
    .btn-group { flex-direction: column; align-items: center; }
    .btn-group .btn-primary,
    .btn-group .btn-ghost { width: 100%; }
}

/* roulang page: article */
/* ============================================
           乐鱼网页版登陆入口 · 全站视觉系统
           ============================================ */
        :root {
            --bg-base: #0B1533;
            --bg-elevated: #0F1B3F;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-deep: rgba(255, 255, 255, 0.03);
            --border-glass: rgba(255, 255, 255, 0.12);
            --primary: #00D8FF;
            --primary-deep: #00A8CC;
            --accent: #FFB854;
            --success: #10C47B;
            --danger: #FF5C7A;
            --text-main: #EAF2FF;
            --text-sub: #B0C4E8;
            --text-muted: #7A8FBF;
            --focus-ring: #00D8FF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: inset 0 1px 0 rgba(255, 255, 255, 0.08);
            --shadow-glow: 0 4px 16px rgba(0, 216, 255, 0.4);
            --shadow-hover: 0 8px 32px rgba(0, 0, 20, 0.4);
            --transition: all 0.3s ease;
            --container-max: 1200px;
        }

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

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

        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-base);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        body.no-scroll {
            overflow: hidden;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
            border: 0;
        }

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

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

        input, select, textarea {
            font: inherit;
            color: inherit;
        }

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

        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
        }

        p {
            margin: 0;
        }

        /* ---------- 容器 ---------- */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ---------- 按钮体系 ---------- */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #00D8FF, #00B4D8);
            color: #04101F;
            font-size: 16px;
            font-weight: 600;
            height: 48px;
            padding: 0 24px;
            border-radius: 10px;
            box-shadow: 0 4px 16px rgba(0, 216, 255, 0.4), 0 0 0 1px rgba(0, 216, 255, 0.3) inset;
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            line-height: 1;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 216, 255, 0.55), 0 0 0 1px rgba(0, 216, 255, 0.4) inset;
            color: #04101F;
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(1.0);
        }

        .ghost-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            height: 44px;
            padding: 0 24px;
            border-radius: 10px;
            transition: var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }

        .ghost-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 216, 255, 0.05);
        }

        .ghost-btn:active {
            filter: brightness(0.85);
        }

        .text-link {
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .text-link:hover {
            color: #66E6FF;
        }

        .text-link .arrow {
            transition: transform 0.3s ease;
        }

        .text-link:hover .arrow {
            transform: translateX(4px);
        }

        /* ---------- 标签 ---------- */
        .tag {
            display: inline-flex;
            align-items: center;
            background: rgba(0, 216, 255, 0.1);
            border: 1px solid rgba(0, 216, 255, 0.25);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 4px;
            white-space: nowrap;
            line-height: 1.5;
        }

        /* ============================================
           顶部导航
           ============================================ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 21, 51, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: background 0.3s ease, box-shadow 0.3s ease;
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            background: rgba(11, 21, 51, 0.88);
            border-bottom-color: rgba(0, 216, 255, 0.25);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.3);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
            line-height: 1.2;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            display: block;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 22px;
        }

        .main-nav > a {
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 400;
            padding: 8px 0;
            position: relative;
            transition: color 0.3s ease;
            white-space: nowrap;
            line-height: 1.4;
        }

        .main-nav > a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(0, 216, 255, 0.6);
            transition: width 0.3s ease;
            border-radius: 2px;
        }

        .main-nav > a:hover {
            color: var(--primary);
        }

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

        .main-nav > a.active {
            color: var(--primary);
            font-weight: 500;
        }

        .nav-cta.btn-primary {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 8px;
            margin-left: 4px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            transition: background 0.3s ease;
            flex-shrink: 0;
        }

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

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

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

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

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

        /* ============================================
           面包屑
           ============================================ */
        .breadcrumb {
            padding: 24px 0 0;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.3s ease;
        }

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

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

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

        /* ============================================
           文章主体
           ============================================ */
        .article-wrap {
            padding: 40px 0 80px;
            position: relative;
        }

        .article-wrap::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 216, 255, 0.05), transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .article-main {
            max-width: 760px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .article-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-glass);
            margin-bottom: 32px;
        }

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

        .meta-item i {
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
        }

        .article-body > p {
            margin-bottom: 24px;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 48px 0 16px;
            color: var(--text-main);
            line-height: 1.35;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-main);
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 24px 0 10px;
            color: var(--text-main);
        }

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

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 8px;
            color: var(--text-sub);
            line-height: 1.75;
        }

        .article-body ul li::marker {
            color: var(--primary);
        }

        .article-body ol li::marker {
            color: var(--primary);
            font-weight: 600;
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            background: rgba(0, 216, 255, 0.05);
            border-left: 4px solid var(--primary);
            border-radius: 0 8px 8px 0;
            color: var(--text-sub);
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body img {
            width: 100%;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin-top: -16px;
            margin-bottom: 24px;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .article-body a:hover {
            color: #66E6FF;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border-glass);
            padding: 10px 14px;
            text-align: left;
            line-height: 1.6;
        }

        .article-body th {
            background: rgba(0, 216, 255, 0.06);
            color: var(--text-main);
            font-weight: 600;
        }

        .article-body td {
            color: var(--text-sub);
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border-glass);
            margin: 32px 0;
        }

        /* ---------- 文末导航 ---------- */
        .article-footer-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid var(--border-glass);
        }

        /* ---------- 内容未找到 ---------- */
        .article-not-found {
            text-align: center;
            padding: 80px 0;
        }

        .article-not-found .article-title {
            font-size: 30px;
            margin-bottom: 12px;
        }

        .not-found-desc {
            color: var(--text-sub);
            font-size: 16px;
            margin-bottom: 32px;
        }

        /* ============================================
           相关推荐
           ============================================ */
        .related-wrap {
            padding: 80px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
        }

        .related-wrap::before {
            content: '';
            position: absolute;
            right: -100px;
            top: 40px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 216, 255, 0.04), transparent 70%);
            pointer-events: none;
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
        }

        .related-grid {
            margin-top: 32px;
        }

        .related-card-col {
            margin-bottom: 24px;
        }

        .related-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 216, 255, 0.5);
            box-shadow: var(--shadow-hover);
        }

        .related-thumb {
            width: 100%;
            height: 180px;
            overflow: hidden;
            position: relative;
            background: rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

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

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

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

        .related-tag-time {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            gap: 8px;
            flex-wrap: wrap;
        }

        .related-time {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .related-info h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .related-info p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        /* ============================================
           CTA 条
           ============================================ */
        .cta-strip {
            padding: 60px 0;
            position: relative;
        }

        .cta-strip::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 240px;
            background: radial-gradient(ellipse, rgba(0, 216, 255, 0.06), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-inner h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--text-sub);
            margin-bottom: 28px;
        }

        /* ============================================
           页脚
           ============================================ */
        .site-footer {
            background: var(--bg-elevated);
            border-top: 1px solid rgba(0, 216, 255, 0.2);
            padding: 60px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon {
            width: 28px;
            height: 28px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        .footer-links a {
            font-size: 14px;
            color: var(--text-sub);
            transition: color 0.3s ease;
            line-height: 1.5;
        }

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

        .footer-contact {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.5;
            display: block;
        }

        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
        }

        /* ============================================
           响应式断点
           ============================================ */
        @media (max-width: 1023px) {
            .main-nav {
                gap: 16px;
            }

            .main-nav > a {
                font-size: 14px;
            }

            .nav-cta.btn-primary {
                padding: 0 16px;
                font-size: 13px;
            }

            .related-info h3 {
                font-size: 16px;
            }
        }

        @media (max-width: 767px) {
            .site-header {
                height: auto;
            }

            .header-inner {
                height: 64px;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 21, 51, 0.96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 16px 20px 24px;
                display: none;
                box-shadow: 0 8px 32px rgba(0, 0, 20, 0.5);
                border-bottom: 1px solid rgba(0, 216, 255, 0.2);
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                z-index: 999;
            }

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

            .main-nav > a {
                padding: 14px 4px;
                font-size: 17px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                color: var(--text-main);
                white-space: normal;
            }

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

            .main-nav > a.active {
                color: var(--primary);
            }

            .main-nav > .nav-cta.btn-primary {
                height: 48px;
                margin: 16px 0 0;
                width: 100%;
                font-size: 16px;
            }

            .nav-toggle {
                display: flex;
            }

            .logo {
                font-size: 16px;
            }

            .logo-icon {
                width: 28px;
                height: 28px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-wrap {
                padding: 24px 0 56px;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .related-wrap {
                padding: 56px 0;
            }

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

            .cta-strip {
                padding: 40px 0;
            }

            .cta-inner h3 {
                font-size: 22px;
            }

            .footer-grid {
                margin-bottom: 16px;
            }

            .footer-col {
                margin-bottom: 28px;
            }

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

            .article-body h2 {
                font-size: 22px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-footer-nav {
                flex-direction: column;
            }

            .article-footer-nav .btn-primary,
            .article-footer-nav .ghost-btn {
                width: 100%;
            }

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

            .breadcrumb .current {
                max-width: 160px;
            }
        }

        @media (max-width: 480px) {
            .article-title {
                font-size: 24px;
            }

            .related-info h3 {
                font-size: 17px;
            }

            .cta-inner h3 {
                font-size: 20px;
            }

            .cta-inner p {
                font-size: 14px;
            }
        }

        /* ---------- 可访问性 ---------- */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--focus-ring);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .main-nav > a:focus-visible {
            outline-offset: 4px;
        }

/* roulang page: category2 */
:root {
        --bg-base: #0B1533;
        --bg-elevated: #0F1B3F;
        --surface-glass: rgba(255, 255, 255, 0.06);
        --surface-glass-strong: rgba(255, 255, 255, 0.1);
        --border-glass: rgba(255, 255, 255, 0.12);
        --primary: #00D8FF;
        --primary-deep: #00A8CC;
        --accent: #FFB854;
        --success: #10C47B;
        --danger: #FF5C7A;
        --text-main: #EAF2FF;
        --text-sub: #B0C4E8;
        --text-muted: #7A8FBF;
        --focus-ring: #00D8FF;
        --radius-lg: 16px;
        --radius-md: 10px;
        --radius-sm: 8px;
        --shadow-glass: inset 0 1px 0 rgba(255, 255, 255, 0.08);
        --shadow-glow: 0 4px 16px rgba(0, 216, 255, 0.4);
        --transition: all 0.3s ease;
        --font-body: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
        --font-num: "Roboto Mono", "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: var(--font-body);
        background: var(--bg-base);
        color: var(--text-main);
        font-size: 16px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }

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

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

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

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

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

    .row .row {
        margin: 0 -12px;
    }

    .column,
    .columns {
        padding-left: 12px;
        padding-right: 12px;
    }

    /* ===== Header ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(11, 21, 51, 0.72);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        height: 72px;
        border-bottom: 1px solid transparent;
        transition: background 0.3s ease, border-color 0.3s ease;
    }

    .site-header.scrolled {
        background: rgba(11, 21, 51, 0.85);
        border-bottom-color: rgba(0, 216, 255, 0.25);
    }

    .header-inner {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        height: 72px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 48px;
    }

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

    .logo-icon {
        width: 34px;
        height: 34px;
        flex-shrink: 0;
        filter: drop-shadow(0 0 8px rgba(0, 216, 255, 0.45));
    }

    .logo-text {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-main);
        white-space: nowrap;
        letter-spacing: 0.3px;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .main-nav a {
        padding: 8px 12px;
        font-size: 15px;
        color: var(--text-sub);
        border-radius: 8px;
        position: relative;
        white-space: nowrap;
        line-height: 1.4;
    }

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

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

    .main-nav a.active::after {
        content: "";
        position: absolute;
        left: 12px;
        right: 12px;
        bottom: 0;
        height: 2px;
        background: var(--primary);
        box-shadow: 0 0 8px rgba(0, 216, 255, 0.8);
        border-radius: 2px;
    }

    .nav-cta.btn-primary {
        margin-left: 16px;
        height: 40px;
        padding: 0 20px;
        font-size: 14px;
        border-radius: 10px;
        box-shadow: 0 2px 12px rgba(0, 216, 255, 0.35), inset 0 0 0 1px rgba(0, 216, 255, 0.25);
    }

    .menu-toggle {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 8px;
        flex-shrink: 0;
    }

    .menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--text-main);
        border-radius: 2px;
        margin: 5px 0;
        transition: var(--transition);
    }

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

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

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

    /* ===== Mobile Menu ===== */
    .mobile-menu {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(11, 21, 51, 0.96);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 999;
        padding: 20px 24px 40px;
        overflow-y: auto;
    }

    .mobile-menu.show {
        display: block;
    }

    .mobile-nav {
        display: flex;
        flex-direction: column;
    }

    .mobile-nav a {
        font-size: 18px;
        line-height: 56px;
        color: var(--text-main);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        padding: 0 4px;
    }

    .mobile-nav a:hover,
    .mobile-nav a.active {
        color: var(--primary);
    }

    .mobile-nav .btn-primary {
        margin-top: 24px;
        height: 48px;
        font-size: 16px;
    }

    /* ===== Buttons ===== */
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #00D8FF, #00B4D8);
        color: #04101F;
        font-size: 16px;
        font-weight: 600;
        height: 48px;
        padding: 0 24px;
        border-radius: 10px;
        border: none;
        cursor: pointer;
        box-shadow: 0 4px 16px rgba(0, 216, 255, 0.4), inset 0 0 0 1px rgba(0, 216, 255, 0.3);
        transition: var(--transition);
        text-align: center;
        line-height: 1;
        white-space: nowrap;
    }

    .btn-primary:hover {
        filter: brightness(1.1);
        transform: translateY(-2px);
        color: #04101F;
        box-shadow: 0 8px 24px rgba(0, 216, 255, 0.5), inset 0 0 0 1px rgba(0, 216, 255, 0.4);
    }

    .btn-primary:active {
        transform: translateY(0);
        filter: brightness(1);
    }

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

    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.3);
        color: #fff;
        font-size: 15px;
        height: 44px;
        padding: 0 24px;
        border-radius: 10px;
        cursor: pointer;
        transition: var(--transition);
        white-space: nowrap;
        line-height: 1;
    }

    .btn-ghost:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(0, 216, 255, 0.05);
        transform: translateY(-2px);
    }

    .btn-ghost:active {
        transform: translateY(0);
        filter: brightness(0.9);
    }

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

    .text-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--primary);
        font-size: 14px;
        font-weight: 500;
        transition: var(--transition);
    }

    .text-link i,
    .text-link .arrow {
        transition: transform 0.3s ease;
        font-size: 14px;
    }

    .text-link:hover {
        color: var(--primary);
        filter: brightness(1.2);
    }

    .text-link:hover i,
    .text-link:hover .arrow {
        transform: translateX(4px);
    }

    /* ===== Page Header ===== */
    .page-header {
        position: relative;
        padding: 80px 0 48px;
        background: linear-gradient(135deg, var(--bg-base) 0%, #0A1028 60%, #0D1B44 100%);
        overflow: hidden;
    }

    .page-header::before {
        content: "";
        position: absolute;
        top: -120px;
        right: -80px;
        width: 560px;
        height: 560px;
        background: radial-gradient(circle, rgba(0, 216, 255, 0.06) 0%, transparent 70%);
        pointer-events: none;
    }

    .page-header::after {
        content: "";
        position: absolute;
        bottom: -80px;
        left: 20%;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(0, 216, 255, 0.04) 0%, transparent 70%);
        pointer-events: none;
    }

    .breadcrumb {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 24px;
        position: relative;
        z-index: 1;
    }

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

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

    .breadcrumb span {
        color: var(--text-main);
    }

    .page-header h1 {
        font-size: 40px;
        font-weight: 700;
        line-height: 1.2;
        margin: 0 0 16px;
        position: relative;
        z-index: 1;
        letter-spacing: 0.5px;
    }

    .page-header .lead {
        font-size: 18px;
        color: var(--text-sub);
        max-width: 640px;
        margin: 0 0 32px;
        position: relative;
        z-index: 1;
        line-height: 1.7;
    }

    .header-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
        position: relative;
        z-index: 1;
    }

    /* ===== Intro Section ===== */
    .intro-section {
        padding: 72px 0;
        background: var(--bg-base);
        position: relative;
    }

    .intro-section::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(0, 216, 255, 0.2), transparent);
    }

    .intro-text p {
        color: var(--text-sub);
        font-size: 16px;
        line-height: 1.8;
        margin-bottom: 20px;
    }

    .intro-text p:last-child {
        margin-bottom: 0;
    }

    .intro-media {
        border-radius: var(--radius-lg);
        overflow: hidden;
        position: relative;
        box-shadow: 0 16px 48px rgba(0, 0, 20, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        border: 1px solid var(--border-glass);
        min-height: 260px;
        background: var(--bg-elevated);
    }

    .intro-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        inset: 0;
        opacity: 0.85;
    }

    .intro-media::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(200deg, transparent 40%, rgba(11, 21, 51, 0.4) 100%);
        pointer-events: none;
    }

    /* ===== Stats Section ===== */
    .stats-section {
        padding: 48px 0 72px;
        background: var(--bg-base);
        position: relative;
    }

    .stat-card {
        background: var(--surface-glass);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow-glass);
        padding: 28px 24px;
        text-align: center;
        transition: var(--transition);
        height: 100%;
        position: relative;
        overflow: hidden;
    }

    .stat-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 48px;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--primary), transparent);
        opacity: 0.6;
    }

    .stat-card:hover {
        transform: translateY(-4px);
        border-color: rgba(0, 216, 255, 0.5);
        box-shadow: 0 8px 32px rgba(0, 0, 20, 0.4), var(--shadow-glass);
    }

    .stat-label {
        font-size: 13px;
        color: var(--text-muted);
        letter-spacing: 0.5px;
        margin-bottom: 12px;
    }

    .stat-value {
        font-family: var(--font-num);
        font-size: 44px;
        font-weight: 700;
        color: var(--primary);
        text-shadow: 0 0 20px rgba(0, 216, 255, 0.5);
        line-height: 1.2;
        margin-bottom: 8px;
    }

    .stat-trend {
        font-size: 13px;
        color: var(--success);
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 5px;
    }

    .stat-trend i {
        font-size: 12px;
    }

    /* ===== Section Head ===== */
    .section-head {
        margin-bottom: 40px;
    }

    .section-head .row {
        align-items: flex-end;
    }

    .section-head h2 {
        font-size: 30px;
        font-weight: 700;
        line-height: 1.3;
        margin: 0 0 8px;
        letter-spacing: 0.3px;
    }

    .section-head .section-desc {
        font-size: 14px;
        color: var(--text-muted);
        margin: 0;
        line-height: 1.7;
    }

    .section-head .text-link {
        margin-bottom: 4px;
        white-space: nowrap;
    }

    /* ===== Topic Cards ===== */
    .topic-section {
        padding: 72px 0;
        background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-elevated) 100%);
        position: relative;
    }

    .topic-section::before {
        content: "";
        position: absolute;
        top: 40px;
        left: -120px;
        width: 360px;
        height: 360px;
        background: radial-gradient(circle, rgba(0, 216, 255, 0.04) 0%, transparent 70%);
        pointer-events: none;
    }

    .topic-card {
        background: var(--surface-glass);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow-glass);
        padding: 28px 24px;
        transition: var(--transition);
        height: 100%;
        position: relative;
        overflow: hidden;
    }

    .topic-card:hover {
        transform: translateY(-4px);
        border-color: rgba(0, 216, 255, 0.5);
        box-shadow: 0 8px 32px rgba(0, 0, 20, 0.4), var(--shadow-glass);
    }

    .topic-icon {
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: rgba(0, 216, 255, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 20px;
        margin-bottom: 18px;
        transition: var(--transition);
    }

    .topic-card:hover .topic-icon {
        background: rgba(0, 216, 255, 0.15);
        box-shadow: 0 0 16px rgba(0, 216, 255, 0.2);
    }

    .topic-card h3 {
        font-size: 18px;
        font-weight: 600;
        line-height: 1.4;
        margin: 0 0 10px;
        color: var(--text-main);
    }

    .topic-card p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.7;
        margin: 0 0 14px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .topic-card .text-link {
        font-size: 13px;
    }

    /* ===== Announcement Cards ===== */
    .announce-section {
        padding: 72px 0;
        background: var(--bg-base);
        position: relative;
    }

    .announce-card {
        background: var(--surface-glass);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow-glass);
        overflow: hidden;
        transition: var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .announce-card:hover {
        transform: translateY(-4px);
        border-color: rgba(0, 216, 255, 0.5);
        box-shadow: 0 8px 32px rgba(0, 0, 20, 0.4), var(--shadow-glass);
    }

    .announce-thumb {
        width: 100%;
        height: 168px;
        overflow: hidden;
        position: relative;
        background: var(--bg-elevated);
    }

    .announce-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

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

    .announce-thumb::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 55%, rgba(11, 21, 51, 0.45) 100%);
        pointer-events: none;
    }

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

    .announce-meta {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 12px;
        flex-wrap: wrap;
    }

    .badge {
        display: inline-flex;
        align-items: center;
        background: rgba(0, 216, 255, 0.12);
        color: var(--primary);
        font-size: 12px;
        padding: 4px 10px;
        border-radius: 4px;
        font-weight: 500;
        line-height: 1.4;
        letter-spacing: 0.3px;
    }

    .badge-warm {
        background: rgba(255, 184, 84, 0.12);
        color: var(--accent);
    }

    .badge-green {
        background: rgba(16, 196, 123, 0.12);
        color: var(--success);
    }

    .announce-time {
        font-size: 13px;
        color: var(--text-muted);
    }

    .announce-body h3 {
        font-size: 18px;
        font-weight: 600;
        line-height: 1.45;
        margin: 0 0 10px;
        color: var(--text-main);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .announce-body p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.7;
        margin: 0 0 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }

    .announce-body .text-link {
        margin-top: auto;
    }

    /* ===== Process Section ===== */
    .process-section {
        padding: 72px 0;
        background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-elevated) 100%);
        position: relative;
    }

    .process-card {
        text-align: center;
        padding: 32px 20px;
        background: var(--surface-glass);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow-glass);
        transition: var(--transition);
        height: 100%;
    }

    .process-card:hover {
        transform: translateY(-4px);
        border-color: rgba(0, 216, 255, 0.5);
    }

    .process-num {
        font-family: var(--font-num);
        font-size: 28px;
        font-weight: 700;
        color: var(--primary);
        text-shadow: 0 0 16px rgba(0, 216, 255, 0.45);
        margin-bottom: 8px;
        line-height: 1.2;
    }

    .process-card h3 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-main);
        margin: 0 0 8px;
    }

    .process-card p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.65;
        margin: 0;
    }

    /* ===== FAQ Section ===== */
    .faq-section {
        padding: 72px 0;
        background: var(--bg-base);
        position: relative;
    }

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

    .faq-item {
        background: var(--surface-glass);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow-glass);
        margin-bottom: 16px;
        overflow: hidden;
        transition: var(--transition);
    }

    .faq-item:hover {
        border-color: rgba(0, 216, 255, 0.3);
    }

    .faq-item.open {
        border-color: rgba(0, 216, 255, 0.45);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        cursor: pointer;
        user-select: none;
        gap: 16px;
    }

    .faq-question h3 {
        font-size: 17px;
        font-weight: 600;
        margin: 0;
        color: var(--text-main);
        transition: var(--transition);
        line-height: 1.5;
    }

    .faq-item.open .faq-question h3 {
        color: var(--primary);
    }

    .faq-toggle {
        flex-shrink: 0;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        border: 1px solid var(--border-glass);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 16px;
        transition: var(--transition);
        background: rgba(0, 216, 255, 0.05);
        line-height: 1;
    }

    .faq-item.open .faq-toggle {
        transform: rotate(45deg);
        background: rgba(0, 216, 255, 0.12);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .faq-answer-inner {
        padding: 0 24px 24px;
        font-size: 14px;
        line-height: 1.75;
        color: var(--text-sub);
    }

    .faq-answer-inner p {
        margin: 0 0 8px;
    }

    .faq-answer-inner p:last-child {
        margin-bottom: 0;
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 72px 0;
        background: linear-gradient(180deg, var(--bg-base) 0%, #0A1028 100%);
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 700px;
        height: 700px;
        background: radial-gradient(circle, rgba(0, 216, 255, 0.06) 0%, transparent 70%);
        pointer-events: none;
    }

    .cta-box {
        background: var(--surface-glass);
        border: 1px solid var(--border-glass);
        border-radius: 20px;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: var(--shadow-glass);
        padding: 48px 40px;
        text-align: center;
        max-width: 800px;
        margin: 0 auto;
        position: relative;
    }

    .cta-box h3 {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-main);
        margin: 0 0 12px;
        line-height: 1.4;
    }

    .cta-box p {
        font-size: 15px;
        color: var(--text-sub);
        margin: 0 0 28px;
        line-height: 1.7;
    }

    .cta-box .btn-primary {
        min-width: 200px;
    }

    /* ===== Footer ===== */
    .site-footer {
        border-top: 1px solid rgba(0, 216, 255, 0.2);
        background: var(--bg-elevated);
        padding: 56px 0 24px;
    }

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

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

    .footer-logo .logo-icon {
        width: 30px;
        height: 30px;
    }

    .footer-logo span {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-main);
    }

    .footer-desc {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin: 0;
        max-width: 260px;
    }

    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-main);
        margin: 0 0 16px;
        line-height: 1.4;
    }

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

    .footer-links a {
        font-size: 14px;
        color: var(--text-sub);
        transition: var(--transition);
        line-height: 1.5;
    }

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

    .footer-contact {
        font-size: 14px;
        color: var(--text-sub);
        display: block;
        line-height: 1.6;
    }

    .copyright {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 20px;
        text-align: center;
        font-size: 13px;
        color: var(--text-muted);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1023.98px) {
        .main-nav a {
            font-size: 14px;
            padding: 8px 10px;
        }

        .nav-cta.btn-primary {
            margin-left: 8px;
            padding: 0 16px;
        }

        .page-header h1 {
            font-size: 34px;
        }

        .stat-value {
            font-size: 36px;
        }
    }

    @media (max-width: 767.98px) {
        .header-inner {
            padding: 0 16px;
            gap: 16px;
        }

        .main-nav {
            display: none;
        }

        .menu-toggle {
            display: block;
        }

        .page-header {
            padding: 56px 0 36px;
        }

        .page-header h1 {
            font-size: 28px;
            line-height: 1.25;
        }

        .page-header .lead {
            font-size: 16px;
        }

        .header-actions {
            flex-direction: column;
            align-items: stretch;
            gap: 12px;
        }

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

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

        .section-head .text-link {
            margin-top: 8px;
        }

        .section-head .columns {
            margin-bottom: 8px;
        }

        .intro-section,
        .topic-section,
        .announce-section,
        .process-section,
        .faq-section,
        .cta-section {
            padding: 56px 0;
        }

        .stat-card {
            padding: 20px 16px;
            margin-bottom: 16px;
        }

        .stat-value {
            font-size: 32px;
        }

        .topic-card {
            padding: 20px;
            margin-bottom: 16px;
        }

        .announce-card {
            margin-bottom: 16px;
        }

        .announce-thumb {
            height: 140px;
        }

        .process-card {
            padding: 24px 16px;
            margin-bottom: 16px;
        }

        .cta-box {
            padding: 32px 20px;
        }

        .cta-box h3 {
            font-size: 20px;
        }

        .cta-box .btn-primary {
            width: 100%;
        }

        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px 20px;
        }

        .footer-brand {
            grid-column: 1 / -1;
        }
    }

    @media (max-width: 479.98px) {
        .page-header h1 {
            font-size: 25px;
        }

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

        .stat-value {
            font-size: 28px;
        }

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