/* roulang page: index */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F172A;
            --bg-tertiary: #111C33;
            --accent-blue: #2B5CFF;
            --accent-blue-dark: #1D4ED8;
            --accent-red: #D42D2D;
            --accent-red-dark: #B22222;
            --accent-gold: #C9A227;
            --text-primary: #E6EDF7;
            --text-secondary: #93A4BC;
            --text-muted: #64748B;
            --border-glass: rgba(255, 255, 255, 0.10);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-bg-hover: rgba(255, 255, 255, 0.10);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 20px;
            --radius-img: 12px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-blue: 0 0 18px rgba(43, 92, 255, 0.45);
            --shadow-red: 0 0 18px rgba(212, 45, 45, 0.40);
            --transition: all 0.3s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Space Grotesk", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #6B96FF;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 100%;
            outline: none;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(43, 92, 255, 0.6);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            position: relative;
            padding: 90px 0;
        }
        .section-title {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .red-divider {
            width: 48px;
            height: 3px;
            background: var(--accent-red);
            border-radius: 2px;
            margin-bottom: 24px;
        }
        .text-center {
            text-align: center;
        }
        .text-center .red-divider {
            margin-left: auto;
            margin-right: auto;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / Nav ===== */
        .nav-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 70px;
            z-index: 1000;
            background: rgba(11, 18, 32, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.35s ease;
        }
        .nav-header:hover {
            background: rgba(11, 18, 32, 0.88);
        }
        .nav-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-blue), #1a3fae);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 14px rgba(43, 92, 255, 0.4);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
            margin-left: 48px;
        }
        .main-nav a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            line-height: 1.4;
            transition: color 0.25s ease;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-red);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border: none;
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #2B5CFF, #1D4ED8);
            color: #fff;
            box-shadow: 0 0 18px rgba(43, 92, 255, 0.35);
        }
        .btn-primary:hover {
            color: #fff;
            transform: scale(1.03);
            box-shadow: 0 0 28px rgba(43, 92, 255, 0.55);
        }
        .btn-red {
            background: linear-gradient(135deg, #E03535, #B22222);
            color: #fff;
            box-shadow: 0 0 18px rgba(212, 45, 45, 0.30);
        }
        .btn-red:hover {
            color: #fff;
            transform: scale(1.03);
            box-shadow: 0 0 28px rgba(212, 45, 45, 0.45);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .btn-outline:hover {
            border-color: var(--accent-blue);
            color: #fff;
            transform: scale(1.02);
        }
        .nav-btn-login {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .nav-btn-login:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: scale(1.02);
        }
        .nav-btn-register {
            background: linear-gradient(135deg, #E03535, #B22222);
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 0 14px rgba(212, 45, 45, 0.30);
            transition: var(--transition);
        }
        .nav-btn-register:hover {
            color: #fff;
            transform: scale(1.03);
            box-shadow: 0 0 22px rgba(212, 45, 45, 0.45);
        }
        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-shrink: 0;
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            position: relative;
            transition: background 0.3s ease;
        }
        .hamburger span::before,
        .hamburger span::after {
            content: "";
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: transform 0.3s ease;
        }
        .hamburger span::before {
            top: -6px;
        }
        .hamburger span::after {
            top: 6px;
        }
        .hamburger.open span {
            background: transparent;
        }
        .hamburger.open span::before {
            transform: rotate(45deg);
            top: 0;
        }
        .hamburger.open span::after {
            transform: rotate(-45deg);
            top: 0;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(11, 18, 32, 0.96);
            backdrop-filter: blur(16px);
            z-index: 999;
            border-bottom: 1px solid var(--border-glass);
            padding: 20px 24px 30px;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a {
            display: block;
            font-size: 18px;
            color: var(--text-primary);
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            line-height: 1.5;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.btn-mobile {
            text-align: center;
            margin-top: 16px;
            background: linear-gradient(135deg, #E03535, #B22222);
            border-radius: 10px;
            color: #fff;
            padding: 14px;
            border: none;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: 130px 0 90px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(13, 25, 48, 0.65) 0%, rgba(11, 18, 32, 0.85) 60%, rgba(11, 18, 32, 0.96) 100%);
            z-index: 1;
        }
        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 44px 44px;
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
        }
        .hero-content {
            flex: 1;
            max-width: 620px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-tag);
            padding: 8px 18px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .hero-tag i {
            color: var(--accent-red);
        }
        .hero h1 {
            font-size: 52px;
            line-height: 1.2;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, #6B96FF, #C9A227);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(230, 237, 247, 0.8);
            margin-bottom: 38px;
            max-width: 540px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-stat-value {
            font-family: var(--font-en);
            font-size: 26px;
            font-weight: 700;
            color: #fff;
        }
        .hero-stat-value i {
            color: var(--accent-gold);
            font-size: 18px;
            margin-left: 4px;
        }
        .hero-stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .hero-visual {
            flex: 0 0 420px;
            max-width: 420px;
            position: relative;
        }
        .glass-card {
            background: var(--glass-bg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 30px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }
        .glass-card .gc-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .glass-card .gc-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
        }
        .glass-card .gc-badge {
            background: rgba(212, 45, 45, 0.25);
            color: #FF6B6B;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
        }
        .glass-card .gc-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .glass-card .gc-item:last-child {
            border-bottom: none;
        }
        .gc-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(43, 92, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #6B96FF;
            flex-shrink: 0;
        }
        .gc-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .gc-text strong {
            display: block;
            color: var(--text-primary);
            font-size: 15px;
        }
        .gc-footer {
            margin-top: 18px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
        }
        .gc-footer a {
            color: var(--accent-blue);
            font-size: 14px;
            font-weight: 500;
        }
        .gc-footer a:hover {
            color: #6B96FF;
        }
        .hero-float-badge {
            position: absolute;
            right: -20px;
            bottom: 30px;
            background: rgba(212, 45, 45, 0.9);
            border-radius: 16px;
            padding: 16px 22px;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 8px 30px rgba(212, 45, 45, 0.30);
            transform: rotate(-3deg);
            z-index: 3;
        }
        .hero-float-badge i {
            margin-right: 6px;
        }

        /* ===== Trust Bar ===== */
        .trust-bar {
            background: var(--bg-secondary);
            padding: 45px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .trust-grid {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 24px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 14px;
            transition: var(--transition);
            max-width: 260px;
        }
        .trust-item:hover {
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }
        .trust-item i {
            font-size: 22px;
            color: var(--accent-blue);
        }
        .trust-item .ti {
            display: flex;
            flex-direction: column;
        }
        .trust-item .ti b {
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 600;
        }
        .trust-item .ti span {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* ===== Process / Steps ===== */
        .process-section {
            background: var(--bg-primary);
        }
        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            gap: 40px;
        }
        .process-steps::before {
            content: "";
            position: absolute;
            top: 38px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), transparent);
            opacity: 0.35;
            z-index: 0;
        }
        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            max-width: 280px;
        }
        .process-step .step-icon {
            width: 76px;
            height: 76px;
            border-radius: 50%;
            background: var(--glass-bg);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-en);
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-blue);
            box-shadow: 0 0 20px rgba(43, 92, 255, 0.2);
            margin-bottom: 24px;
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover .step-icon {
            transform: scale(1.05);
            box-shadow: 0 0 30px rgba(43, 92, 255, 0.4);
        }
        .process-step h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .process-step p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 240px;
            margin: 0 auto;
        }
        .step-num {
            position: absolute;
            top: -12px;
            right: -8px;
            background: var(--accent-red);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 10px rgba(212, 45, 45, 0.3);
        }

        /* ===== Cases ===== */
        .cases-section {
            background: var(--bg-secondary);
        }
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .case-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: var(--transition);
            position: relative;
        }
        .case-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: var(--shadow-card);
        }
        .case-card .case-img-wrap {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        .case-card .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .case-card:hover .case-img-wrap img {
            transform: scale(1.04);
        }
        .case-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 18, 32, 0.5), transparent 40%);
            pointer-events: none;
        }
        .case-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(212, 45, 45, 0.85);
            color: #fff;
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            z-index: 2;
        }
        .case-body {
            padding: 24px;
        }
        .case-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .case-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .case-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-blue);
            font-size: 15px;
            font-weight: 500;
        }
        .case-link:hover {
            gap: 12px;
            color: #6B96FF;
        }
        .case-link i {
            transition: transform 0.3s ease;
        }
        .case-link:hover i {
            transform: translateX(4px);
        }

        /* ===== News / CMS ===== */
        .news-section {
            background: var(--bg-primary);
        }
        .news-list {
            max-width: 900px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .news-item:hover {
            background: rgba(255, 255, 255, 0.02);
            transform: translateX(4px);
        }
        .news-date-badge {
            flex-shrink: 0;
            width: 84px;
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 12px 10px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            height: 76px;
        }
        .news-date-badge .weekday {
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-date-badge .day {
            font-family: var(--font-en);
            font-size: 24px;
            font-weight: 700;
            color: var(--accent-blue);
            line-height: 1.2;
        }
        .news-date-badge .month {
            font-size: 12px;
            color: var(--text-secondary);
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .news-body h3 a {
            color: var(--text-primary);
        }
        .news-body h3 a:hover {
            color: var(--accent-blue);
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-meta .tag {
            background: rgba(43, 92, 255, 0.15);
            color: #6B96FF;
            border-radius: 20px;
            padding: 2px 12px;
            font-size: 12px;
        }
        .news-empty {
            text-align: center;
            padding: 60px 24px;
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            color: var(--text-secondary);
            font-size: 16px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-secondary);
        }
        .faq-container {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .accordion-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-item:hover {
            border-color: rgba(255, 255, 255, 0.14);
        }
        .accordion-item.is-active {
            border-color: rgba(43, 92, 255, 0.3);
        }
        .accordion-title {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 22px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            text-decoration: none;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background 0.25s ease;
        }
        .accordion-title:hover {
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-primary);
        }
        .accordion-title .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 45, 45, 0.15);
            color: var(--accent-red);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }
        .accordion-title .arrow {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 13px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .accordion-item.is-active .accordion-title .arrow {
            transform: rotate(180deg);
        }
        .accordion-content {
            display: none;
            padding: 0 24px 22px 66px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.02);
            transition: max-height 0.3s ease;
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 110px 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            text-align: center;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.88), rgba(13, 25, 48, 0.82));
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(230, 237, 247, 0.8);
            max-width: 550px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-btn-main {
            min-width: 200px;
            height: 56px;
            font-size: 17px;
            background: linear-gradient(135deg, #E03535, #B22222);
            color: #fff;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-shadow: 0 0 24px rgba(212, 45, 45, 0.40);
            transition: var(--transition);
        }
        .cta-btn-main:hover {
            transform: scale(1.03);
            box-shadow: 0 0 36px rgba(212, 45, 45, 0.55);
            color: #fff;
        }
        .cta-note {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #081020;
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-col ul a:hover {
            color: var(--accent-blue);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact span {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--accent-blue);
            width: 20px;
            text-align: center;
        }
        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-copyright span {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-copyright a {
            color: var(--text-muted);
        }
        .footer-copyright a:hover {
            color: var(--accent-blue);
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
                gap: 50px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-visual {
                flex: none;
                max-width: 100%;
                width: 100%;
            }
            .hero h1 {
                font-size: 42px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .process-steps {
                gap: 24px;
            }
            .process-steps::before {
                display: none;
            }
            .section-title {
                font-size: 32px;
            }
        }
        @media screen and (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .nav-container {
                padding: 0 16px;
            }
            .main-nav {
                display: none;
            }
            .nav-cta .nav-btn-login {
                display: none;
            }
            .nav-cta .nav-btn-register {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 20px;
            }
            .process-steps {
                flex-direction: column;
                gap: 40px;
            }
            .process-step {
                max-width: 100%;
            }
            .process-step p {
                max-width: 100%;
            }
            .trust-grid {
                flex-direction: column;
                align-items: center;
            }
            .trust-item {
                max-width: 100%;
                width: 100%;
            }
            .section-title {
                font-size: 28px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-date-badge {
                width: auto;
                height: auto;
                flex-direction: row;
                gap: 8px;
                align-items: center;
                justify-content: flex-start;
                padding: 8px 14px;
            }
            .accordion-content {
                padding-left: 24px;
            }
            .cta-section {
                padding: 70px 0;
            }
            .cta-section h2 {
                font-size: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-copyright {
                flex-direction: column;
                text-align: center;
            }
            .cases-grid {
                gap: 20px;
            }
            .case-card .case-img-wrap {
                height: 180px;
            }
        }
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                padding-top: 110px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 14px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .nav-header {
                height: 62px;
            }
            .nav-container {
                height: 62px;
            }
            .mobile-nav {
                top: 62px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .section-title {
                font-size: 26px;
            }
            .cta-btn-main {
                min-width: 180px;
                height: 50px;
                font-size: 16px;
            }
        }

/* roulang page: article */
:root {
    --bg-primary: #0B1220;
    --bg-secondary: #0F172A;
    --bg-card: rgba(255,255,255,0.05);
    --bg-card-hover: rgba(255,255,255,0.08);
    --border-glass: rgba(255,255,255,0.10);
    --border-glass-hover: rgba(255,255,255,0.18);
    --primary: #2B5CFF;
    --primary-dark: #1D4ED8;
    --primary-light: #4F7FFF;
    --accent-red: #D42D2D;
    --accent-red-light: #E84848;
    --gold: #C9A227;
    --text-primary: #E6EDF7;
    --text-secondary: #93A4BC;
    --text-muted: #64748B;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-tag: 20px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
    --glow-blue: 0 0 18px rgba(43,92,255,0.45);
    --glow-red: 0 0 18px rgba(212,45,45,0.40);
    --section-pad: 90px;
    --font-cn: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    --font-en: "Archivo","Space Grotesk",var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-cn);background:var(--bg-primary);color:var(--text-primary);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .25s}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;border:none;outline:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
::selection{background:rgba(43,92,255,.4);color:#fff}
::-webkit-scrollbar{width:8px;background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:4px}

/* ===== Buttons ===== */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-size:15px;font-weight:600;padding:12px 28px;border-radius:var(--radius-btn);box-shadow:var(--glow-blue);cursor:pointer;transition:all .3s ease;border:1px solid rgba(255,255,255,.1)}
.btn-primary:hover{transform:scale(1.02);box-shadow:0 0 30px rgba(43,92,255,.6);background:linear-gradient(135deg,var(--primary-light),var(--primary));color:#fff}
.btn-primary:active{transform:scale(.98)}
.btn-red{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--accent-red),#A02020);color:#fff;font-size:15px;font-weight:600;padding:12px 28px;border-radius:var(--radius-btn);box-shadow:var(--glow-red);cursor:pointer;transition:all .3s ease;border:1px solid rgba(255,255,255,.1)}
.btn-red:hover{transform:scale(1.02);box-shadow:0 0 30px rgba(212,45,45,.6);background:linear-gradient(135deg,var(--accent-red-light),var(--accent-red));color:#fff}
.btn-red:active{transform:scale(.98)}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:rgba(255,255,255,.06);color:var(--text-primary);font-size:15px;font-weight:500;padding:12px 28px;border-radius:var(--radius-btn);border:1px solid var(--border-glass);cursor:pointer;transition:all .3s ease}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:var(--border-glass-hover);color:#fff}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-lg{padding:16px 44px;font-size:16px;min-width:200px}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:68px;background:rgba(11,18,32,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 4px 24px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;box-shadow:0 0 14px rgba(43,92,255,.35)}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:var(--text-primary);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{font-size:15px;font-weight:500;color:var(--text-secondary);padding:8px 4px;position:relative;transition:color .3s}
.main-nav a::after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--accent-red);border-radius:2px;transition:width .3s}
.main-nav a:hover{color:var(--text-primary)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--text-primary)}
.main-nav a.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px}
.btn-login{font-size:14px;color:var(--text-secondary);padding:8px 16px;border-radius:8px;transition:all .3s}
.btn-login:hover{color:var(--text-primary);background:rgba(255,255,255,.06)}
.mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:10px}
.mobile-toggle span{width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:all .3s}
.mobile-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-toggle.active span:nth-child(2){opacity:0}
.mobile-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Page Banner ===== */
.page-banner{position:relative;padding:160px 0 60px;background-size:cover;background-position:center;min-height:340px;display:flex;align-items:center}
.page-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,32,.92) 0%,rgba(13,27,48,.75) 55%,rgba(43,92,255,.25) 100%)}
.page-banner::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:var(--text-secondary);margin-bottom:20px}
.breadcrumb a{color:var(--text-secondary);transition:color .3s}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb i{font-size:10px;color:var(--text-muted)}
.breadcrumb span{color:var(--text-primary)}
.page-banner-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(212,45,45,.15);border:1px solid rgba(212,45,45,.35);color:#E84848;font-size:13px;font-weight:600;padding:5px 16px;border-radius:var(--radius-tag);margin-bottom:16px;letter-spacing:.5px}
.page-banner h1{font-size:40px;font-weight:700;line-height:1.25;color:#fff;margin-bottom:16px;max-width:80%}
.page-meta{display:flex;align-items:center;gap:20px;font-size:14px;color:var(--text-secondary)}
.page-meta span{display:flex;align-items:center;gap:6px}
.page-meta i{color:var(--primary-light)}
.red-stripe{width:48px;height:3px;background:linear-gradient(90deg,var(--accent-red),rgba(212,45,45,0));border-radius:3px;margin-top:16px}

/* ===== Article Main ===== */
.article-section{padding:60px 0 90px;background:var(--bg-primary)}
.article-layout{max-width:780px;margin:0 auto}
.article-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-card);padding:48px 56px;backdrop-filter:blur(8px);box-shadow:var(--shadow-card)}
.article-card::before{content:"";display:block;width:48px;height:3px;background:linear-gradient(90deg,var(--accent-red),rgba(212,45,45,0));border-radius:3px;margin-bottom:32px}
.article-content{font-size:16px;line-height:1.9;color:var(--text-primary)}
.article-content h2{font-size:26px;font-weight:700;margin:36px 0 16px;color:#fff;line-height:1.4;padding-left:14px;border-left:3px solid var(--accent-red)}
.article-content h3{font-size:20px;font-weight:600;margin:28px 0 12px;color:#fff;line-height:1.4}
.article-content p{margin-bottom:18px;color:var(--text-primary);font-size:16px;line-height:1.9}
.article-content ul,.article-content ol{margin:18px 0;padding-left:24px}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin-bottom:8px;line-height:1.8;color:var(--text-primary)}
.article-content blockquote{border-left:3px solid var(--primary);background:rgba(43,92,255,.08);padding:16px 24px;margin:24px 0;border-radius:0 12px 12px 0;color:var(--text-secondary);font-style:italic}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:12px;margin:24px 0;box-shadow:var(--shadow-card)}
.article-content a{color:var(--primary-light);border-bottom:1px solid rgba(79,127,255,.3);transition:all .3s}
.article-content a:hover{color:var(--primary-light);border-bottom-color:var(--primary-light)}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;border-radius:8px;overflow:hidden}
.article-content table th{background:rgba(43,92,255,.2);padding:12px 16px;text-align:left;font-weight:600;color:#fff;border:1px solid rgba(255,255,255,.08)}
.article-content table td{padding:12px 16px;border:1px solid rgba(255,255,255,.06);color:var(--text-secondary)}
.article-content table tr:hover td{background:rgba(255,255,255,.02)}
.article-content code{background:rgba(255,255,255,.08);padding:2px 8px;border-radius:4px;font-size:14px;color:#E6EDF7}

/* Empty state */
.article-empty{text-align:center;padding:60px 20px}
.article-empty i{font-size:48px;color:var(--text-muted);margin-bottom:20px}
.article-empty h2{font-size:24px;color:var(--text-primary);margin-bottom:12px}
.article-empty p{font-size:15px;color:var(--text-secondary);margin-bottom:24px}

/* ===== Article End ===== */
.article-end{margin-top:36px;padding-top:28px;border-top:1px solid rgba(255,255,255,.08)}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.tag{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:var(--text-secondary);font-size:13px;padding:6px 14px;border-radius:var(--radius-tag);transition:all .3s}
.tag:hover{background:rgba(43,92,255,.15);border-color:rgba(43,92,255,.3);color:var(--text-primary)}
.tag i{font-size:11px;color:var(--primary-light)}
.article-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:14px;padding:10px 20px;border:1px solid var(--border-glass);border-radius:8px;transition:all .3s}
.back-link:hover{color:#fff;border-color:var(--border-glass-hover);background:rgba(255,255,255,.06)}
.back-link i{font-size:12px;transition:transform .3s}
.back-link:hover i{transform:translateX(-4px)}

/* ===== Related Section ===== */
.related-section{padding:80px 0;background:var(--bg-secondary);position:relative}
.related-header{margin-bottom:44px;text-align:center}
.related-header h2{font-size:32px;color:#fff;margin-bottom:12px}
.related-header p{font-size:15px;color:var(--text-secondary);max-width:520px;margin:0 auto}
.section-stripe{width:48px;height:3px;background:linear-gradient(90deg,var(--accent-red),rgba(212,45,45,0));border-radius:3px;margin:14px auto 0}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.related-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-card);overflow:hidden;transition:all .3s ease;backdrop-filter:blur(8px)}
.related-card:hover{transform:translateY(-4px);border-color:var(--border-glass-hover);box-shadow:0 12px 36px rgba(0,0,0,.45)}
.related-card .card-img{position:relative;padding-top:62%;overflow:hidden}
.related-card .card-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.related-card:hover .card-img img{transform:scale(1.05)}
.related-card .card-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,18,32,.7))}
.related-card .card-body{padding:20px}
.related-card .card-tag{display:inline-block;background:rgba(212,45,45,.15);border:1px solid rgba(212,45,45,.3);color:#E84848;font-size:12px;padding:3px 10px;border-radius:12px;margin-bottom:10px}
.related-card h3{font-size:16px;font-weight:600;color:var(--text-primary);line-height:1.5;margin-bottom:8px;transition:color .3s}
.related-card h3:hover{color:var(--primary-light)}
.related-card p{font-size:13px;color:var(--text-secondary);line-height:1.6}

/* ===== CTA Section ===== */
.cta-section{position:relative;padding:90px 0;background-size:cover;background-position:center;text-align:center;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,32,.94),rgba(43,92,255,.4))}
.cta-section::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:50px 50px;pointer-events:none}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:36px;color:#fff;font-weight:700;margin-bottom:14px;line-height:1.3}
.cta-section p{font-size:17px;color:rgba(255,255,255,.7);max-width:560px;margin:0 auto 32px;line-height:1.7}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:20px}

/* ===== Footer ===== */
.site-footer{background:var(--bg-secondary);border-top:1px solid rgba(255,255,255,.06);padding:70px 0 0;position:relative}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:48px;margin-bottom:40px}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.8;margin-top:16px;max-width:340px}
.footer-col h4{font-size:16px;color:#fff;font-weight:600;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:28px;height:2px;background:var(--accent-red);border-radius:2px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:var(--text-secondary);transition:all .3s;display:inline-flex;align-items:center;gap:6px}
.footer-col ul a:hover{color:var(--primary-light);padding-left:4px}
.footer-col ul a::before{content:"›";font-size:14px;color:var(--text-muted)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact span{font-size:14px;color:var(--text-secondary);display:flex;align-items:center;gap:10px}
.footer-contact i{color:var(--primary-light);font-size:14px;width:18px;text-align:center}
.footer-copyright{display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.06);padding:24px 0;font-size:13px;color:var(--text-muted);flex-wrap:wrap;gap:8px}

/* ===== Mobile Menu ===== */
.mobile-menu{display:none;position:fixed;top:68px;left:0;right:0;background:rgba(11,18,32,.98);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08);padding:24px;z-index:999;flex-direction:column;gap:8px}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:18px;padding:14px 16px;border-radius:10px;color:var(--text-secondary);transition:all .3s}
.mobile-menu a:hover,.mobile-menu a.active{color:#fff;background:rgba(255,255,255,.06)}
.mobile-menu .btn{display:flex;justify-content:center;margin-top:12px}

/* ===== Focus ===== */
a:focus-visible,.btn:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid rgba(43,92,255,.6);outline-offset:2px}

/* ===== Responsive ===== */
@media (max-width:1024px){
    .main-nav{display:none}
    .header-actions .btn-login,.header-actions .btn-primary{display:none}
    .mobile-toggle{display:flex}
    :root{--section-pad:64px}
    .page-banner h1{font-size:32px;max-width:100%}
    .article-card{padding:36px 32px}
    .related-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand{grid-column:1/-1}
}
@media (max-width:768px){
    .container{padding:0 20px}
    .page-banner{padding:130px 0 40px;min-height:280px}
    .page-banner h1{font-size:28px}
    .article-section{padding:40px 0 60px}
    .article-card{padding:28px 20px}
    .related-grid{grid-template-columns:1fr}
    .cta-section h2{font-size:28px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-copyright{flex-direction:column;text-align:center;gap:8px}
}
@media (max-width:520px){
    .logo-text{font-size:16px}
    .page-banner h1{font-size:24px}
    .page-meta{flex-wrap:wrap;gap:10px}
    .article-content{font-size:15px}
    .article-content h2{font-size:20px}
    .article-content h3{font-size:17px}
    .related-grid{grid-template-columns:1fr}
    .btn-lg{min-width:160px;padding:14px 28px}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F172A;
            --primary: #2B5CFF;
            --primary-dark: #1D4ED8;
            --accent: #D42D2D;
            --gold: #C9A227;
            --text-main: #E6EDF7;
            --text-secondary: #93A4BC;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 20px;
            --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --blue-glow: 0 0 18px rgba(43, 92, 255, 0.45);
            --red-glow: 0 0 18px rgba(212, 45, 45, 0.40);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 90px;
            --spacing-mobile: 56px;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }
        ul {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(43, 92, 255, 0.6);
            outline-offset: 2px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            transition: all .3s ease;
            border: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: var(--blue-glow);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            transform: scale(1.03);
            filter: brightness(1.15);
            box-shadow: 0 0 24px rgba(43, 92, 255, 0.65);
            color: #fff;
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--text-main);
        }
        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #B71C1C);
            color: #fff;
            box-shadow: var(--red-glow);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            transform: scale(1.03);
            filter: brightness(1.12);
            box-shadow: 0 0 24px rgba(212, 45, 45, 0.60);
            color: #fff;
        }
        .btn-large {
            padding: 16px 48px;
            font-size: 17px;
            border-radius: 12px;
            min-width: 200px;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* ===== 通用板块 ===== */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--primary);
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-tag::before {
            content: "";
            width: 28px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
            display: inline-block;
        }
        .section-tag.light {
            color: rgba(255, 255, 255, 0.9);
        }
        .section-divider {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin: 16px 0 20px;
        }
        .section-divider::before,
        .section-divider::after {
            content: "";
            width: 40px;
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
        }
        .section-divider span {
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(11, 18, 32, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s ease;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: var(--blue-glow);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all .3s;
            position: relative;
            font-weight: 400;
        }
        .main-nav a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }
        .main-nav a.active {
            color: var(--text-main);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 10px;
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all .3s;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.10);
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            padding-top: 72px;
            min-height: 520px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            overflow: hidden;
            background: var(--bg-primary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.6;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.94) 0%, rgba(11, 18, 32, 0.78) 55%, rgba(212, 45, 45, 0.18) 100%);
        }
        .hero-content {
            padding: 72px 0 48px;
            max-width: 780px;
        }
        .hero-content .section-tag {
            margin-bottom: 16px;
        }
        .hero-content h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 2px;
        }
        .hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 680px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-data-bar {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .data-label {
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 1px;
        }
        .data-value {
            font-size: 16px;
            color: var(--text-main);
            font-weight: 600;
        }

        /* ===== 图文混排 ===== */
        .category-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-primary);
        }
        .category-section.alt {
            background: var(--bg-secondary);
        }
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .media-block.reverse .media-image {
            order: 2;
        }
        .media-block.reverse .media-content {
            order: 1;
        }
        .media-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--glass-border);
        }
        .media-image img {
            width: 100%;
            height: 100%;
            min-height: 340px;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .media-image:hover img {
            transform: scale(1.04);
        }
        .media-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 18, 32, 0.4) 100%);
            pointer-events: none;
        }
        .media-content h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 20px;
        }
        .media-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .feature-list {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-main);
        }
        .feature-list li i {
            color: var(--primary);
            margin-top: 4px;
        }
        .media-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 24px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-tag);
            font-size: 14px;
            color: var(--text-main);
            backdrop-filter: blur(8px);
            transition: all .3s;
        }
        .badge i {
            color: var(--primary);
        }
        .badge:hover {
            border-color: rgba(43, 92, 255, 0.5);
            background: rgba(43, 92, 255, 0.08);
        }

        /* ===== 服务内容网格 ===== */
        .section-header {
            margin-bottom: 48px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-tag {
            justify-content: center;
        }
        .section-header.center .section-tag::before {
            display: none;
        }
        .section-header h2 {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .service-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .service-card {
            background: var(--glass-bg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            transition: all .4s ease;
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: 0.5;
            transition: opacity .3s;
        }
        .service-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.18);
            transform: translateY(-4px);
            box-shadow: var(--card-shadow);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(43, 92, 255, 0.2), rgba(43, 92, 255, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 20px;
            border: 1px solid rgba(43, 92, 255, 0.25);
        }
        .service-card h3 {
            font-size: 22px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== FAQ 手风琴 ===== */
        .modern-accordion {
            background: transparent;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .modern-accordion .accordion-item {
            background: var(--glass-bg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            overflow: hidden;
            transition: all .4s ease;
        }
        .modern-accordion .accordion-item:hover {
            border-color: rgba(255, 255, 255, 0.18);
        }
        .modern-accordion .accordion-item.is-active {
            border-color: rgba(43, 92, 255, 0.35);
            background: rgba(255, 255, 255, 0.08);
        }
        .modern-accordion .accordion-title {
            display: flex !important;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            border: none;
            line-height: 1.5;
            transition: all .3s;
        }
        .modern-accordion .accordion-title:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .modern-accordion .accordion-title::before,
        .modern-accordion .accordion-title::after {
            content: none !important;
        }
        .q-badge {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(212, 45, 45, 0.15);
            border: 1px solid rgba(212, 45, 45, 0.4);
            color: var(--accent);
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .modern-accordion .accordion-content {
            background: rgba(255, 255, 255, 0.02);
            padding: 0 24px 20px 68px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            border: none;
        }
        .modern-accordion .accordion-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            overflow: hidden;
            background: var(--bg-primary);
        }
        .cta-background {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .cta-background img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.92) 0%, rgba(11, 18, 32, 0.80) 50%, rgba(212, 45, 45, 0.25) 100%);
        }
        .cta-content {
            text-align: center;
            position: relative;
            z-index: 1;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-content .section-tag {
            justify-content: center;
        }
        .cta-content .section-tag::before {
            display: none;
        }
        .cta-content h2 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-content p {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .cta-actions {
            margin-bottom: 20px;
        }
        .cta-note {
            font-size: 14px;
            color: var(--text-muted);
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }
        .cta-note::before,
        .cta-note::after {
            content: "";
            width: 30px;
            height: 1px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 20px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all .3s;
        }
        .footer-col ul a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-contact i {
            color: var(--primary);
            width: 16px;
        }
        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .media-block {
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 56px;
            }
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 18, 32, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.10);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 14px 18px;
                font-size: 17px;
                border-radius: 12px;
                text-align: left;
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background: rgba(43, 92, 255, 0.15);
                color: #fff;
            }
            .header-actions {
                display: none;
            }
            .hero-content h1 {
                font-size: 36px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .media-block,
            .media-block.reverse {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .media-block.reverse .media-image {
                order: 1;
            }
            .media-block.reverse .media-content {
                order: 2;
            }
            .media-image img {
                min-height: 240px;
            }
            .media-content h2 {
                font-size: 28px;
            }
            .section-header h2 {
                font-size: 30px;
            }
            .service-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .service-card {
                padding: 24px 20px;
            }
            .service-card h3 {
                font-size: 18px;
            }
            .cta-content h2 {
                font-size: 32px;
            }
            .modern-accordion .accordion-title {
                font-size: 16px;
                padding: 16px 18px;
            }
            .modern-accordion .accordion-content {
                padding: 0 18px 18px 58px;
            }
        }

        @media (max-width: 540px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-data-bar {
                padding: 18px 0;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .media-image img {
                min-height: 200px;
            }
            .media-content h2 {
                font-size: 24px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .cta-content h2 {
                font-size: 28px;
            }
            .btn-large {
                padding: 14px 32px;
                font-size: 16px;
                min-width: 180px;
                width: 100%;
                max-width: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-copyright {
                flex-direction: column;
                text-align: center;
            }
            .footer-contact span {
                font-size: 13px;
            }
            .logo-text {
                font-size: 17px;
            }
        }