/* roulang page: index */
:root {
            --bg-base: #050810;
            --bg-elev: #0B1220;
            --primary: #4C7CF3;
            --accent: #D4002F;
            --accent-2: #F5A623;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-bg-strong: rgba(255, 255, 255, 0.14);
            --glass-border: rgba(255, 255, 255, 0.12);
            --text-hi: #F1F5FB;
            --text-mid: #A0AEC0;
            --text-low: #64748B;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-btn: 0 0 20px rgba(212, 0, 47, 0.4);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-base);
            color: var(--text-hi);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 0;
            pointer-events: none;
            background-image:
                linear-gradient(to bottom, rgba(11, 18, 32, 0.4), rgba(5, 8, 16, 0.9)),
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 100% 100%, 44px 44px, 44px 44px;
        }

        body::after {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 0;
            pointer-events: none;
            background:
                radial-gradient(ellipse 55% 40% at 85% 0%, rgba(76, 124, 243, 0.10), transparent 70%),
                radial-gradient(ellipse 35% 35% at 5% 100%, rgba(212, 0, 47, 0.04), transparent 70%);
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
            border: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 28px;
            padding-right: 28px;
            position: relative;
            z-index: 2;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 76px;
            background: rgba(5, 8, 16, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

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

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-hi);
            transition: opacity .2s;
        }

        .brand:hover {
            opacity: 0.85;
        }

        .brand-name {
            font-size: 19px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .brand-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(212, 0, 47, 0.65);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-mid);
            padding: 6px 2px;
            transition: color .25s ease;
            letter-spacing: 0.3px;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(212, 0, 47, 0.6);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            color: var(--text-hi);
            font-size: 20px;
            transition: background .2s;
        }

        .nav-toggle:hover {
            background: var(--glass-bg-strong);
        }

        .nav-toggle:focus-visible,
        .brand:focus-visible,
        .nav-link:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 200;
            background: rgba(5, 8, 16, 0.96);
            backdrop-filter: blur(28px);
            -webkit-backdrop-filter: blur(28px);
            flex-direction: column;
            padding: 28px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 48px;
        }

        .mobile-menu-close {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            color: var(--text-hi);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .2s;
        }

        .mobile-menu-close:hover {
            background: var(--glass-bg-strong);
        }

        .mobile-menu-link {
            display: block;
            font-size: 26px;
            font-weight: 600;
            color: var(--text-hi);
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color .2s;
        }

        .mobile-menu-link:hover {
            color: var(--primary);
        }

        .mobile-menu-link.active {
            color: var(--accent);
        }


        .hero {
            position: relative;
            z-index: 2;
            min-height: 640px;
            padding: 140px 0 80px;
            background-image:
                linear-gradient(to bottom, rgba(5, 8, 16, 0.8), rgba(5, 8, 16, 0.35), rgba(5, 8, 16, 0.88)),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 56px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 100px;
            background: rgba(76, 124, 243, 0.12);
            border: 1px solid rgba(76, 124, 243, 0.25);
            font-size: 13px;
            font-weight: 500;
            color: #A7C0FB;
            letter-spacing: 0.4px;
            margin-bottom: 20px;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(212, 0, 47, 0.55);
        }

        .hero-title {
            font-size: 50px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.5px;
            color: var(--text-hi);
            margin-bottom: 18px;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-mid);
            line-height: 1.8;
            max-width: 540px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 44px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 12px;
            padding: 13px 28px;
            font-size: 15px;
            letter-spacing: 0.4px;
            transition: all .3s ease;
            cursor: pointer;
            line-height: 1.2;
        }

        .btn-primary {
            background: linear-gradient(135deg, #E6002E, #B4001F);
            color: #fff;
            box-shadow: 0 0 20px rgba(212, 0, 47, 0.3);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(212, 0, 47, 0.45);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(212, 0, 47, 0.35);
        }

        .btn-secondary {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-hi);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-value {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-hi);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-low);
            margin-top: 4px;
        }

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

        .login-card {
            padding: 36px 32px;
            max-width: 400px;
            margin-left: auto;
        }

        .login-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }

        .login-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-hi);
        }

        .login-card-tag {
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 100px;
            background: rgba(212, 0, 47, 0.15);
            border: 1px solid rgba(212, 0, 47, 0.3);
            color: #FF8BA3;
            font-weight: 500;
        }

        .login-field {
            margin-bottom: 16px;
        }

        .login-field-label {
            display: block;
            font-size: 13px;
            color: var(--text-mid);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .login-input {
            width: 100%;
            background: rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 12px;
            padding: 13px 16px;
            font-size: 15px;
            color: var(--text-hi);
            transition: border-color .25s, box-shadow .25s;
        }

        .login-input::placeholder {
            color: var(--text-low);
        }

        .login-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(76, 124, 243, 0.15);
        }

        .login-btn {
            width: 100%;
            margin-top: 8px;
            padding: 14px 24px;
        }

        .login-card-footer {
            margin-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-mid);
        }

        .login-card-footer a {
            color: var(--primary);
            font-weight: 500;
            transition: color .2s;
        }

        .login-card-footer a:hover {
            color: #8BB3FA;
            text-decoration: underline;
        }

        .section {
            padding: 88px 0;
            position: relative;
            z-index: 2;
        }

        .section-head {
            margin-bottom: 48px;
            max-width: 640px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-hi);
            letter-spacing: 0.4px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-mid);
            margin-top: 12px;
            line-height: 1.75;
        }

        .story-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 56px;
            align-items: center;
        }

        .story-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            background: var(--bg-elev);
        }

        .story-image-wrap::before {
            content: '';
            display: block;
            padding-top: 75%;
        }

        .story-image-wrap img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .story-image-wrap:hover img {
            transform: scale(1.02);
        }

        .story-content {
            padding-right: 12px;
        }

        .story-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .story-content p {
            color: var(--text-mid);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .story-points {
            list-style: none;
            margin-top: 24px;
            display: grid;
            gap: 12px;
        }

        .story-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.6;
        }

        .story-points li::before {
            content: '';
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 8px;
            box-shadow: 0 0 8px rgba(76, 124, 243, 0.4);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
        }

        .feature-col {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .feature-card {
            position: relative;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
            transform: translateY(-3px);
        }

        .feature-card-large {
            min-height: 440px;
        }

        .feature-card-image {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin: 16px;
            flex-shrink: 0;
            background: var(--bg-elev);
        }

        .feature-card-large .feature-card-image {
            height: 220px;
        }

        .feature-card-image::before {
            content: '';
            display: block;
            padding-top: 52%;
        }

        .feature-card-image img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .feature-card:hover .feature-card-image img {
            transform: scale(1.03);
        }

        .feature-card-body {
            padding: 6px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .feature-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(76, 124, 243, 0.15);
            border: 1px solid rgba(76, 124, 243, 0.25);
            color: #A7C0FB;
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .feature-card-title {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-hi);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .feature-card-desc {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .feature-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s ease, color .2s ease;
        }

        .feature-link:hover {
            gap: 10px;
            color: #8BB3FA;
        }

        .news-section {
            background: linear-gradient(to bottom, transparent, rgba(11, 18, 32, 0.4), transparent);
        }

        .news-list {
            display: grid;
            gap: 14px;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 22px;
            border-radius: var(--radius-md);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: border-color .25s, background .25s, transform .25s;
        }

        .news-item:hover {
            border-color: rgba(255, 255, 255, 0.22);
            background: rgba(255, 255, 255, 0.12);
            transform: translateX(4px);
        }

        .news-thumb {
            width: 72px;
            height: 56px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg-elev);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-low);
            font-size: 22px;
        }

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

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

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 4px;
            flex-wrap: wrap;
        }

        .news-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(76, 124, 243, 0.13);
            border: 1px solid rgba(76, 124, 243, 0.2);
            color: #A7C0FB;
            white-space: nowrap;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-low);
        }

        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-desc {
            font-size: 13px;
            color: var(--text-mid);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-arrow {
            color: var(--text-low);
            font-size: 20px;
            flex-shrink: 0;
            transition: color .2s, transform .2s;
        }

        .news-item:hover .news-arrow {
            color: var(--text-hi);
            transform: translateX(4px);
        }

        .empty-state {
            padding: 48px 32px;
            text-align: center;
            border-radius: var(--radius-lg);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .empty-icon {
            font-size: 36px;
            margin-bottom: 12px;
            color: var(--text-low);
        }

        .empty-state p {
            color: var(--text-mid);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .trust-bar {
            padding: 44px 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .trust-item {
            padding: 12px 8px;
        }

        .trust-value {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-hi);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .trust-label {
            font-size: 14px;
            color: var(--text-mid);
            margin-top: 6px;
        }

        .faq-item {
            border-radius: var(--radius-md);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .25s;
        }

        .faq-item.open {
            border-color: rgba(255, 255, 255, 0.22);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-hi);
            text-align: left;
            transition: background .2s;
            line-height: 1.4;
        }

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

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: var(--radius-md);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-mid);
            font-size: 18px;
            flex-shrink: 0;
            transition: transform .3s ease, color .3s ease, background .3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--text-hi);
            background: rgba(212, 0, 47, 0.15);
            border-color: rgba(212, 0, 47, 0.3);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .cta-panel {
            position: relative;
            border-radius: 24px;
            padding: 64px;
            background: linear-gradient(135deg, #0B1220, #0E1830);
            border: 1px solid rgba(255, 255, 255, 0.08);
            overflow: hidden;
            text-align: center;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 0, 47, 0.15), transparent 70%);
            pointer-events: none;
        }

        .cta-panel::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(76, 124, 243, 0.10), transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-desc {
            font-size: 16px;
            color: var(--text-mid);
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 2;
            line-height: 1.75;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto 22px;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        .cta-input {
            flex: 1;
            min-width: 220px;
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 12px;
            padding: 13px 18px;
            font-size: 15px;
            color: var(--text-hi);
            transition: border-color .25s, box-shadow .25s;
        }

        .cta-input::placeholder {
            color: var(--text-low);
        }

        .cta-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(76, 124, 243, 0.15);
        }

        .cta-alt-link {
            display: inline-block;
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            position: relative;
            z-index: 2;
            transition: color .2s;
        }

        .cta-alt-link:hover {
            color: #8BB3FA;
            text-decoration: underline;
        }

        .site-footer {
            position: relative;
            z-index: 2;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(5, 8, 16, 0.6);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 3fr 2fr 2fr 2fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 16px;
        }

        .footer-brand .brand-dot {
            width: 6px;
            height: 6px;
        }

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

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

        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-mid);
            transition: color .2s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

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

        .footer-misc {
            display: flex;
            gap: 20px;
        }

        .footer-misc a {
            font-size: 13px;
            color: var(--text-low);
            transition: color .2s;
        }

        .footer-misc a:hover {
            color: var(--text-mid);
        }

        @media (max-width:1024px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .hero-title {
                font-size: 40px;
            }
            .story-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card-large {
                min-height: auto;
            }
            .trust-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width:768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .site-header {
                height: 68px;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .brand-name {
                font-size: 17px;
            }
            .hero {
                padding: 110px 0 56px;
                min-height: auto;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 20px;
            }
            .stat-value {
                font-size: 24px;
            }
            .login-card {
                margin-left: 0;
                max-width: none;
                padding: 28px 22px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
            .news-title {
                white-space: normal;
            }
            .news-desc {
                white-space: normal;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }
            .news-arrow {
                display: none;
            }
            .trust-bar {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
                padding: 24px 16px;
            }
            .cta-panel {
                padding: 36px 24px;
            }
            .cta-title {
                font-size: 24px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-misc {
                justify-content: center;
            }
        }

        @media (max-width:520px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-stats {
                gap: 12px;
                flex-direction: column;
            }
            .trust-bar {
                grid-template-columns: 1fr;
                padding: 24px 16px;
            }
            .cta-panel {
                padding: 28px 18px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input {
                min-width: 0;
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --bg-base: #050810;
            --bg-elev: #0B1220;
            --primary: #4C7CF3;
            --accent: #D4002F;
            --accent-2: #F5A623;
            --glass-bg: rgba(255,255,255,0.08);
            --glass-bg-strong: rgba(255,255,255,0.14);
            --glass-border: rgba(255,255,255,0.12);
            --text-hi: #F1F5FB;
            --text-mid: #A0AEC0;
            --text-low: #64748B;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
            --shadow-btn: 0 0 20px rgba(212,0,47,0.4);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-base);
            color: var(--text-hi);
            line-height: 1.75;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 85% -10%, rgba(76,124,243,0.16), transparent 55%),
                radial-gradient(ellipse at 0% 90%, rgba(212,0,47,0.07), transparent 40%),
                linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(180deg, #050810 0%, #0B1220 100%);
            background-size: auto, auto, 40px 40px, 40px 40px, auto;
            background-attachment: fixed;
        }

        img { max-width: 100%; display: block; }
        a { color: var(--primary); text-decoration: none; transition: all 0.3s ease; }
        button { font-family: var(--font-sans); cursor: pointer; }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 76px;
            background: rgba(5,8,16,0.7);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .nav-inner {
            height: 76px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text-hi);
            letter-spacing: 0.02em;
        }

        .brand:hover { color: #fff; }

        .brand-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(212,0,47,0.6);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
        }

        .nav-link {
            color: var(--text-mid);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.02em;
            position: relative;
            padding: 6px 0;
        }

        .nav-link:hover { color: var(--text-hi); }
        .nav-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; border-radius: 4px; }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 6px rgba(212,0,47,0.6);
        }

        .nav-toggle {
            display: none;
            background: rgba(255,255,255,0.08);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm);
            color: var(--text-hi);
            padding: 8px;
            transition: all 0.3s ease;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle:hover { background: rgba(255,255,255,0.14); }
        .nav-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

        .mobile-close {
            display: none;
            position: absolute;
            top: 24px;
            right: 24px;
            background: rgba(255,255,255,0.08);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm);
            color: var(--text-hi);
            padding: 10px;
            transition: all 0.3s ease;
        }

        .mobile-close:hover { background: rgba(255,255,255,0.14); }
        .mobile-close:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

        /* ===== 面包屑 ===== */
        .breadcrumb-area {
            padding: 32px 0 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-low);
            flex-wrap: wrap;
        }

        .breadcrumb a { color: var(--text-mid); }
        .breadcrumb a:hover { color: var(--text-hi); }
        .breadcrumb a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        .breadcrumb .sep { color: var(--text-low); opacity: 0.5; }
        .breadcrumb .current { color: var(--text-hi); font-weight: 500; }

        /* ===== 文章标题区 ===== */
        .article-hero {
            padding: 48px 0 40px;
            position: relative;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .article-cat {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(212,0,47,0.15);
            border: 1px solid rgba(212,0,47,0.3);
            color: #FF6B8A;
            font-size: 13px;
            font-weight: 500;
        }

        .article-date {
            font-size: 14px;
            color: var(--text-low);
        }

        .article-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
            color: var(--text-hi);
            max-width: 860px;
        }

        .article-summary {
            font-size: 17px;
            color: var(--text-mid);
            line-height: 1.8;
            max-width: 760px;
            padding: 20px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-left: 3px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        .article-cover {
            margin-top: 36px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .article-cover img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .article-cover:hover img { transform: scale(1.02); }

        .article-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(5,8,16,0.5) 100%);
            pointer-events: none;
        }

        /* ===== 正文阅读区 ===== */
        .article-body-wrap {
            padding: 32px 0 64px;
        }

        .article-body {
            max-width: 768px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.85;
            color: #E2E8F0;
        }

        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 48px 0 20px;
            color: var(--text-hi);
            line-height: 1.3;
        }

        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            margin: 36px 0 16px;
            color: var(--text-hi);
            line-height: 1.35;
        }

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

        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 24px;
            background: rgba(255,255,255,0.06);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-mid);
            font-size: 16px;
        }

        .article-body ul,
        .article-body ol {
            margin: 20px 0;
            padding-left: 24px;
        }

        .article-body ul li,
        .article-body ol li { margin-bottom: 10px; }

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

        .article-body img {
            border-radius: 16px;
            margin: 28px auto;
            box-shadow: var(--shadow-card);
        }

        .article-body figure { margin: 28px 0; }
        .article-body figure img { margin: 0 auto; }
        .article-body figcaption {
            text-align: center;
            font-size: 14px;
            color: var(--text-low);
            margin-top: 12px;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-decoration-color: rgba(76,124,243,0.4);
            text-underline-offset: 4px;
        }

        .article-body a:hover {
            color: #7A9FFF;
            text-decoration-color: #7A9FFF;
        }

        .article-body a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* 无文章状态 */
        .article-empty {
            max-width: 768px;
            margin: 0 auto;
            padding: 80px 40px;
            text-align: center;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .article-empty h2 {
            font-size: 24px;
            margin-bottom: 12px;
            color: var(--text-hi);
        }

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

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 64px 0;
            border-top: 1px solid rgba(255,255,255,0.06);
        }

        .related-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 8px;
        }

        .related-sub {
            font-size: 14px;
            color: var(--text-low);
            margin-bottom: 32px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .related-card {
            display: block;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all 0.3s ease;
        }

        .related-card:hover {
            background: var(--glass-bg-strong);
            border-color: rgba(255,255,255,0.25);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .related-card:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: var(--radius-md);
        }

        .related-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 12px;
            color: var(--text-hi);
        }

        .related-card:hover h3 { color: var(--primary); }

        .related-card .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-low);
        }

        .related-card .related-arrow {
            color: var(--text-low);
            transition: all 0.3s ease;
        }

        .related-card:hover .related-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }

        /* ===== 返回入口 ===== */
        .article-back {
            padding: 8px 0 80px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #E6002E, #B4001F);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 12px;
            border: none;
            box-shadow: var(--shadow-btn);
            transition: all 0.3s ease;
            min-width: 130px;
        }

        .btn-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(212,0,47,0.55);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 14px rgba(212,0,47,0.35);
        }

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

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.18);
            color: var(--text-hi);
            font-size: 15px;
            font-weight: 500;
            padding: 14px 32px;
            border-radius: 12px;
            transition: all 0.3s ease;
            min-width: 130px;
        }

        .btn-ghost:hover {
            background: rgba(255,255,255,0.16);
            border-color: rgba(255,255,255,0.3);
            color: #fff;
        }

        .btn-ghost:active {
            background: rgba(255,255,255,0.1);
            transform: translateY(0);
        }

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

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-elev);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 16px;
        }

        .footer-brand:hover { color: #fff; }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-mid);
            max-width: 300px;
        }

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

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

        .footer-links a {
            color: var(--text-mid);
            font-size: 14px;
        }

        .footer-links a:hover { color: var(--text-hi); }
        .footer-links a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
        }

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

        .footer-misc {
            display: flex;
            gap: 24px;
        }

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

        .footer-misc a:hover { color: var(--text-mid); }
        .footer-misc a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-cover img { height: 340px; }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                height: 100vh;
                background: rgba(5,8,16,0.95);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                justify-content: center;
                gap: 32px;
                transition: right 0.4s ease;
                padding: 40px;
                z-index: 200;
            }

            .nav-links.open { right: 0; }

            .nav-link { font-size: 24px; }

            .mobile-close { display: flex; align-items: center; justify-content: center; }

            .nav-toggle { display: flex; }

            .article-hero h1 { font-size: 32px; }
            .article-cover img { height: 260px; }
            .related-grid { grid-template-columns: 1fr; }
            .article-back .btn-primary,
            .article-back .btn-ghost { width: 100%; margin-bottom: 12px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; margin-bottom: 32px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .footer-misc { justify-content: center; }
            .article-summary { font-size: 15px; }
            .article-body { font-size: 16px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero { padding: 32px 0 28px; }
            .breadcrumb { font-size: 13px; }
            .article-hero h1 { font-size: 28px; }
            .related-grid { gap: 14px; }
            .footer-misc { flex-direction: column; gap: 8px; }
        }

/* roulang page: category1 */
:root {
            --bg-base: #050810;
            --bg-elev: #0B1220;
            --primary: #4C7CF3;
            --accent: #D4002F;
            --accent-2: #F5A623;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-bg-strong: rgba(255, 255, 255, 0.14);
            --glass-border: rgba(255, 255, 255, 0.12);
            --text-hi: #F1F5FB;
            --text-mid: #A0AEC0;
            --text-low: #64748B;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-btn: 0 0 20px rgba(212, 0, 47, 0.4);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-base);
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                radial-gradient(ellipse at 85% 0%, rgba(76, 124, 243, 0.18) 0%, transparent 55%),
                radial-gradient(ellipse at 0% 100%, rgba(212, 0, 47, 0.06) 0%, transparent 50%),
                linear-gradient(180deg, #0B1220 0%, #050810 100%);
            background-size: 48px 48px, 48px 48px, 100% 100%, 100% 100%, 100% 100%;
            background-attachment: fixed;
            color: var(--text-hi);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-md);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

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

        /* ===== NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 76px;
            background: rgba(5, 8, 16, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--glass-border);
            transition: background 0.3s ease;
        }
        .nav-inner {
            height: 76px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-hi);
            letter-spacing: 0.02em;
            transition: color 0.25s;
        }
        .brand:hover {
            color: #fff;
        }
        .brand-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(212, 0, 47, 0.7);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 34px;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-mid);
            padding: 6px 2px;
            transition: color 0.25s;
        }
        .nav-link:hover {
            color: var(--text-hi);
        }
        .nav-link.active {
            color: var(--text-hi);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(212, 0, 47, 0.8);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            color: var(--text-hi);
            transition: background 0.25s, border-color 0.25s;
        }
        .nav-toggle:hover {
            background: var(--glass-bg-strong);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .nav-toggle:focus-visible,
        .btn:focus-visible,
        .nav-link:focus-visible,
        .faq-question:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .nav-toggle svg {
            pointer-events: none;
        }

        /* ===== BUTTONS ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 28px;
            line-height: 1;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #E6002E, #B4001F);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(212, 0, 47, 0.6);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 14px rgba(212, 0, 47, 0.3);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text-hi);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.35);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(1px);
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            padding: 4px 0;
            transition: color 0.2s, gap 0.2s;
        }
        .btn-link:hover {
            color: #fff;
            gap: 10px;
        }

        /* ===== BADGE ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 0, 47, 0.12);
            border: 1px solid rgba(212, 0, 47, 0.3);
            color: #FDA4AF;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.04em;
        }
        .badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(212, 0, 47, 0.8);
        }

        /* ===== HERO ===== */
        .page-hero {
            position: relative;
            padding: 180px 0 96px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(5, 8, 16, 0.92) 0%, rgba(5, 8, 16, 0.6) 50%, rgba(5, 8, 16, 0.2) 100%);
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(76, 124, 243, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .page-hero-content .badge {
            margin-bottom: 22px;
        }
        .page-hero-content h1 {
            font-size: clamp(36px, 5vw, 56px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.01em;
            color: var(--text-hi);
            margin-bottom: 20px;
        }
        .page-hero-content p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-mid);
            max-width: 640px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== SECTION ===== */
        .section {
            padding: 88px 0;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
            position: relative;
            padding-left: 18px;
        }
        .section-tag::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 10px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-heading {
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-heading h2 {
            font-size: clamp(28px, 3.5vw, 38px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .section-heading p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== SPLIT ===== */
        .split-layout {
            display: grid;
            grid-template-columns: 0.92fr 1.08fr;
            gap: 56px;
            align-items: center;
        }
        .split-media {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 10px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
        }
        .split-media img {
            border-radius: var(--radius-md);
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }
        .split-content h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .split-content p {
            color: var(--text-mid);
            margin-bottom: 20px;
        }
        .split-list {
            margin-top: 8px;
        }
        .split-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-mid);
            font-size: 14px;
            padding: 8px 0;
            line-height: 1.6;
        }
        .split-list li::before {
            content: '';
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 9px;
            box-shadow: 0 0 6px rgba(76, 124, 243, 0.6);
        }

        /* ===== CARDS ===== */
        .card-grid-asymmetric {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 28px;
        }
        .feature-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
            transform: translateY(-3px);
        }
        .feature-card .card-media {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 20px;
            background: rgba(255, 255, 255, 0.04);
            height: 180px;
        }
        .feature-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .card-media img {
            transform: scale(1.04);
        }
        .feature-card .card-tag {
            display: inline-flex;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-mid);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
            align-self: flex-start;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
            flex-grow: 1;
        }
        .feature-card .btn-link {
            margin-top: auto;
        }
        .feature-card-lg {
            grid-row: span 2;
            padding: 28px;
        }
        .feature-card-lg .card-media {
            height: 240px;
        }
        .feature-card-lg h3 {
            font-size: 24px;
        }
        .feature-card-lg p {
            font-size: 15px;
        }

        /* ===== STEPS ===== */
        .steps-section {
            background: rgba(11, 18, 32, 0.6);
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
        }
        .steps-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .step-item {
            position: relative;
            padding: 28px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            transition: transform 0.3s, border-color 0.3s;
        }
        .step-item:hover {
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-4px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(212, 0, 47, 0.15);
            border: 1px solid rgba(212, 0, 47, 0.3);
            color: var(--accent);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .faq-item.open {
            border-color: rgba(76, 124, 243, 0.4);
            box-shadow: 0 0 24px rgba(76, 124, 243, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: color 0.2s;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-icon {
            position: relative;
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--text-mid);
            border-radius: 2px;
            transition: background 0.3s, transform 0.3s;
        }
        .faq-icon::before {
            top: 8px;
            left: 0;
            width: 18px;
            height: 2px;
        }
        .faq-icon::after {
            top: 0;
            left: 8px;
            width: 2px;
            height: 18px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item.open .faq-icon::before,
        .faq-item.open .faq-icon::after {
            background: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-panel {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.95), rgba(5, 8, 16, 0.98));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 64px 56px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(212, 0, 47, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .cta-panel p {
            color: var(--text-mid);
            max-width: 420px;
            font-size: 15px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: rgba(3, 6, 12, 0.9);
            border-top: 1px solid var(--glass-border);
            padding: 62px 0 32px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
            gap: 42px;
            margin-bottom: 52px;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 18px;
        }
        .footer-desc {
            color: var(--text-low);
            font-size: 14px;
            line-height: 1.7;
            max-width: 260px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 18px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-low);
            font-size: 14px;
            transition: color 0.25s;
        }
        .footer-links a:hover {
            color: var(--text-hi);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-copy {
            color: var(--text-low);
            font-size: 13px;
        }
        .footer-misc {
            display: flex;
            gap: 20px;
        }
        .footer-misc a {
            color: var(--text-low);
            font-size: 13px;
        }
        .footer-misc a:hover {
            color: var(--text-hi);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .steps-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .split-layout {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 64px;
            }
            .nav-inner {
                height: 64px;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: 280px;
                max-width: 85vw;
                background: rgba(5, 8, 16, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                justify-content: flex-start;
                gap: 10px;
                padding: 96px 24px 40px;
                transform: translateX(100%);
                transition: transform 0.35s ease;
                border-left: 1px solid var(--glass-border);
                box-shadow: -20px 0 50px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-link {
                font-size: 17px;
                padding: 12px 8px;
                display: block;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-link.active::after {
                left: 8px;
                transform: none;
                width: 4px;
                height: 4px;
            }
            .nav-toggle {
                display: inline-flex;
                z-index: 120;
            }
            .nav-toggle.active {
                border-color: rgba(212, 0, 47, 0.5);
                color: var(--accent);
            }
            .page-hero {
                padding: 140px 0 60px;
            }
            .page-hero-content h1 {
                font-size: 32px;
            }
            .section {
                padding: 56px 0;
            }
            .card-grid-asymmetric {
                grid-template-columns: 1fr;
            }
            .feature-card-lg {
                grid-row: auto;
            }
            .steps-timeline {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-panel {
                padding: 40px 28px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .page-hero-content h1 {
                font-size: 28px;
                line-height: 1.25;
            }
            .btn {
                padding: 12px 20px;
                font-size: 14px;
                width: 100%;
            }
            .hero-actions {
                flex-direction: column;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .split-media img {
                min-height: 200px;
            }
        }