/* roulang page: index */
:root {
            --bg: #0A0E27;
            --bg-alt: #0D1330;
            --bg-footer: #070A1C;
            --primary: #29C5FF;
            --accent: #E8B55C;
            --text: #FFFFFF;
            --muted: #8A93B8;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --glass-hover: rgba(41, 197, 255, 0.35);
            --radius-card: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.45);
            --shadow-btn: 0 0 24px rgba(41, 197, 255, 0.35);
            --shadow-btn-hover: 0 0 40px rgba(41, 197, 255, 0.5);
            --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

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

        .section {
            padding: 96px 0;
            position: relative;
        }

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

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head .subtitle {
            color: var(--muted);
            font-size: 1rem;
            max-width: 520px;
            margin: 12px auto 0;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(41, 197, 255, 0.35);
            background: rgba(41, 197, 255, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.08em;
            box-shadow: 0 0 18px rgba(41, 197, 255, 0.12);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            transition: all .3s ease;
            letter-spacing: 0.02em;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, #29C5FF, #1FA8E0);
            color: #071A2E;
            box-shadow: var(--shadow-btn);
            font-weight: 600;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.15);
            color: var(--text);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(41, 197, 255, 0.06);
        }
        .btn-ghost:active {
            transform: scale(0.97);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 200;
            height: 72px;
            background: rgba(10, 14, 39, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s ease;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            flex-shrink: 0;
        }

        .logo svg {
            width: 32px;
            height: 32px;
            filter: drop-shadow(0 0 10px rgba(41, 197, 255, 0.5));
        }

        .logo span {
            background: linear-gradient(120deg, #fff 40%, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(41, 197, 255, 0.2);
        }

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

        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            color: var(--muted);
            font-weight: 500;
            position: relative;
            transition: color .3s ease;
        }
        .nav-link:hover {
            color: var(--text);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scale(0);
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--primary);
            transition: transform .3s ease;
            box-shadow: 0 0 10px var(--primary);
        }
        .nav-link:hover::after {
            transform: translateX(-50%) scale(1);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            transform: translateX(-50%) scale(1);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mega-trigger {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--muted);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            cursor: pointer;
            font-size: 0.85rem;
            transition: all .3s ease;
        }
        .mega-trigger:hover {
            color: var(--text);
            border-color: var(--primary);
            background: rgba(41, 197, 255, 0.08);
        }
        .mega-trigger.active {
            color: var(--primary);
            border-color: var(--primary);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .hamburger span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mega panel */
        .mega-panel {
            position: absolute;
            top: calc(100% + 0px);
            right: 0;
            width: 560px;
            background: rgba(16, 22, 50, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            padding: 28px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all .3s ease;
            z-index: 300;
        }
        .mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mega-panel::before {
            content: '';
            position: absolute;
            top: -6px;
            right: 32px;
            width: 12px;
            height: 12px;
            background: inherit;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            transform: rotate(45deg);
        }
        .mega-col h4 {
            font-size: 0.8rem;
            color: var(--muted);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 14px;
        }
        .mega-col ul {
            list-style: none;
        }
        .mega-col li {
            margin-bottom: 8px;
        }
        .mega-col li a {
            display: block;
            padding: 6px 10px;
            border-radius: 8px;
            font-size: 0.9rem;
            color: #C6CBD9;
            transition: all .3s ease;
        }
        .mega-col li a:hover {
            background: rgba(41, 197, 255, 0.1);
            color: var(--primary);
            transform: translateX(4px);
        }
        .mega-col li .time {
            font-size: 0.7rem;
            color: var(--muted);
            margin-left: 4px;
        }
        .mega-cta {
            grid-column: 1 / -1;
            background: rgba(41, 197, 255, 0.08);
            border: 1px solid rgba(41, 197, 255, 0.25);
            border-radius: 12px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .mega-cta p {
            font-size: 0.9rem;
            color: #C6CBD9;
        }
        .mega-cta a {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 6px 14px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-pill);
            transition: all .3s ease;
        }
        .mega-cta a:hover {
            background: var(--primary);
            color: #071A2E;
            box-shadow: var(--shadow-btn);
        }

        /* Mobile drawer */
        .mobile-drawer {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(10, 14, 39, 0.97);
            backdrop-filter: blur(20px);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            z-index: 150;
            transform: translateY(-120%);
            transition: transform .35s ease;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            max-height: calc(100vh - 72px);
            overflow-y: auto;
        }
        .mobile-drawer.open {
            transform: translateY(0);
        }
        .mobile-drawer a {
            padding: 14px 18px;
            border-radius: 12px;
            font-size: 1rem;
            color: var(--muted);
            background: rgba(255, 255, 255, 0.03);
            transition: all .3s ease;
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            background: rgba(41, 197, 255, 0.1);
            color: var(--primary);
        }

        /* ---------- Hero ---------- */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 39, 0.65), #0A0E27 92%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -100px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.2) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .hero .glow-gold {
            position: absolute;
            bottom: -80px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(232, 181, 92, 0.12) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 120px 24px 60px;
        }
        .hero-content h1 {
            font-size: clamp(2rem, 5vw, 4rem);
            font-weight: 700;
            line-height: 1.3;
            margin: 24px 0;
            letter-spacing: 0.02em;
        }
        .hero-content h1 .highlight {
            color: var(--primary);
        }
        .hero-content .subtitle {
            color: var(--muted);
            font-size: clamp(1rem, 1.5vw, 1.125rem);
            max-width: 620px;
            margin: 0 auto 40px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }
        .hero-metrics {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 40px;
        }
        .hero-metric {
            text-align: center;
        }
        .hero-metric strong {
            display: block;
            font-size: 1.75rem;
            color: var(--accent);
            font-weight: 700;
        }
        .hero-metric span {
            font-size: 0.8rem;
            color: var(--muted);
        }
        .scroll-indicator {
            margin-top: 48px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
            letter-spacing: 0.1em;
        }
        .scroll-indicator .mouse {
            width: 24px;
            height: 40px;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            border-radius: 20px;
            display: flex;
            justify-content: center;
            padding-top: 6px;
        }
        .scroll-indicator .mouse::before {
            content: '';
            width: 4px;
            height: 8px;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 4px;
            animation: scrollDot 1.6s infinite;
        }
        @keyframes scrollDot {
            0% { transform: translateY(0); opacity: 1; }
            70% { transform: translateY(12px); opacity: 0; }
            100% { transform: translateY(0); opacity: 0; }
        }

        /* ---------- Benefits ---------- */
        .benefits-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 24px;
        }
        .benefit-left {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-card);
            padding: 40px;
            transition: all .4s ease;
        }
        .benefit-left:hover {
            border-color: var(--glass-hover);
            box-shadow: var(--shadow-card-hover);
        }
        .benefit-left .icon {
            width: 48px;
            height: 48px;
            margin-bottom: 24px;
        }
        .benefit-left .icon svg {
            filter: drop-shadow(0 0 12px rgba(41, 197, 255, 0.4));
        }
        .benefit-left h3 {
            font-size: 1.375rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .benefit-left p {
            color: var(--muted);
            font-size: 0.95rem;
            line-height: 1.9;
        }
        .benefit-right {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .benefit-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-card);
            padding: 32px;
            flex: 1;
            transition: all .4s ease;
        }
        .benefit-card:hover {
            border-color: var(--glass-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .benefit-card .icon {
            width: 40px;
            height: 40px;
            margin-bottom: 16px;
            transition: transform .3s ease;
        }
        .benefit-card:hover .icon {
            transform: translateY(-4px);
        }
        .benefit-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .benefit-card p {
            color: var(--muted);
            font-size: 0.875rem;
            line-height: 1.8;
        }

        /* ---------- Demo ---------- */
        .demo-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 96px;
        }
        .demo-block:last-child {
            margin-bottom: 0;
        }
        .demo-block.reverse .demo-visual {
            order: 2;
        }
        .demo-visual {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(41, 197, 255, 0.25);
            box-shadow: 0 0 40px rgba(41, 197, 255, 0.1);
        }
        .demo-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 39, 0.4));
            pointer-events: none;
        }
        .demo-visual img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .demo-text h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .demo-list {
            list-style: none;
        }
        .demo-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 14px;
            color: #C6CBD9;
            font-size: 0.95rem;
        }
        .demo-list li svg {
            flex-shrink: 0;
            margin-top: 5px;
            color: var(--primary);
        }

        /* ---------- Proof ---------- */
        .proof-section {
            position: relative;
            background: var(--bg-alt);
            overflow: hidden;
        }
        .proof-section::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(232, 181, 92, 0.1) 0%, transparent 70%);
        }
        .proof-section::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.12) 0%, transparent 70%);
        }
        .proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .proof-item {
            text-align: center;
            padding: 32px 16px;
        }
        .proof-item strong {
            display: block;
            font-size: clamp(2.5rem, 4vw, 3.5rem);
            font-weight: 700;
            background: linear-gradient(180deg, var(--accent), rgba(232, 181, 92, 0.3));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .proof-item span {
            display: block;
            font-size: 0.85rem;
            color: var(--muted);
            margin-top: 8px;
        }
        .proof-quote {
            text-align: center;
            max-width: 560px;
            margin: 60px auto 0;
            position: relative;
            z-index: 2;
            color: #C6CBD9;
            font-style: italic;
            font-size: 1.05rem;
        }
        .proof-quote::before {
            content: '"';
            font-size: 3rem;
            color: var(--accent);
            opacity: 0.5;
            position: absolute;
            left: -32px;
            top: -16px;
            font-style: normal;
        }

        /* ---------- Pricing ---------- */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .pricing-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            position: relative;
            display: flex;
            flex-direction: column;
            transition: all .4s ease;
        }
        .pricing-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .pricing-card.featured {
            background: rgba(41, 197, 255, 0.06);
            border: 1px solid rgba(41, 197, 255, 0.4);
            box-shadow: 0 0 40px rgba(41, 197, 255, 0.12);
        }
        .pricing-card.featured::before {
            content: '人气推荐';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--accent), #d49b4a);
            color: #1a1405;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.05em;
            box-shadow: 0 4px 14px rgba(232, 181, 92, 0.35);
        }
        .pricing-name {
            font-size: 1.125rem;
            color: var(--muted);
            font-weight: 500;
        }
        .pricing-price {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--accent);
            margin: 16px 0 24px;
            line-height: 1.2;
        }
        .pricing-price small {
            font-size: 0.875rem;
            color: var(--muted);
            font-weight: 400;
        }
        .pricing-list {
            list-style: none;
            flex: 1;
            margin-bottom: 32px;
        }
        .pricing-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            color: #C6CBD9;
            font-size: 0.9rem;
        }
        .pricing-list li svg {
            color: var(--primary);
            flex-shrink: 0;
        }
        .pricing-card .btn {
            width: 100%;
        }

        /* ---------- FAQ ---------- */
        .faq-wrapper {
            max-width: 880px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: all .35s ease;
        }
        .faq-item.active {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(41, 197, 255, 0.3);
            box-shadow: 0 0 20px rgba(41, 197, 255, 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 22px 24px;
            background: transparent;
            cursor: pointer;
            text-align: left;
            color: var(--text);
            font-size: 1rem;
            font-weight: 500;
            transition: color .3s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
        }
        .faq-question .icon::before,
        .faq-question .icon::after {
            content: '';
            position: absolute;
            background: var(--primary);
            border-radius: 2px;
            transition: all .35s ease;
        }
        .faq-question .icon::before {
            width: 16px;
            height: 2px;
            top: 9px;
            left: 2px;
        }
        .faq-question .icon::after {
            width: 2px;
            height: 16px;
            top: 2px;
            left: 9px;
        }
        .faq-item.active .faq-question .icon::after {
            transform: rotate(90deg);
            opacity: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
            padding: 0 24px;
            color: var(--muted);
            font-size: 0.925rem;
            line-height: 1.9;
        }
        .faq-item.active .faq-answer {
            max-height: 320px;
            padding: 0 24px 22px;
        }

        /* ---------- News ---------- */
        .news-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        .news-head .section-head {
            text-align: left;
            margin-bottom: 0;
        }
        .news-head .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
        }
        .news-more {
            color: var(--primary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: gap .3s ease;
            padding: 8px 0;
        }
        .news-more:hover {
            gap: 12px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .4s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            border-color: var(--glass-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .news-card .cover {
            height: 200px;
            overflow: hidden;
        }
        .news-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .cover img {
            transform: scale(1.05);
        }
        .news-card .body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .tag {
            font-size: 0.7rem;
            color: var(--primary);
            background: rgba(41, 197, 255, 0.08);
            border: 1px solid rgba(41, 197, 255, 0.2);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .news-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card p {
            color: var(--muted);
            font-size: 0.85rem;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--muted);
            font-size: 0.8rem;
            margin-top: 16px;
        }
        .empty-state {
            text-align: center;
            padding: 80px 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px dashed rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            color: var(--muted);
            font-size: 1rem;
        }
        .empty-state svg {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            color: rgba(255, 255, 255, 0.2);
        }

        /* ---------- CTA / Contact ---------- */
        .cta-section {
            position: relative;
            background: var(--bg-alt);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.15) 0%, transparent 70%);
        }
        .cta-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .cta-left h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 600;
            margin-bottom: 20px;
        }
        .cta-left p {
            color: var(--muted);
            max-width: 440px;
        }
        .cta-form {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(12px);
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--shadow-card);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            color: #C6CBD9;
            margin-bottom: 8px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 14px 16px;
            color: var(--text);
            transition: all .3s ease;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(41, 197, 255, 0.1);
            background: rgba(255, 255, 255, 0.08);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(138, 147, 184, 0.6);
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' viewBox='0 0 16 16'%3E%3Cpath stroke='%238A93B8' stroke-width='2' d='m4 6 4 4 4-4'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            cursor: pointer;
        }
        .form-group textarea {
            min-height: 110px;
            resize: vertical;
        }
        .cta-form .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(41, 197, 255, 0.15);
            padding: 72px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--muted);
            font-size: 0.875rem;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            color: var(--text);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 20px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--muted);
            font-size: 0.875rem;
            transition: all .3s ease;
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--muted);
            font-size: 0.875rem;
        }
        .footer-contact svg {
            color: var(--primary);
            flex-shrink: 0;
        }
        .footer-bottom {
            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;
            color: var(--muted);
            font-size: 0.8rem;
        }

        /* ---------- Floating CTA ---------- */
        .floating-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 999;
        }
        .floating-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #1FA8E0);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-btn);
            transition: all .3s ease;
            position: relative;
        }
        .floating-btn:hover {
            transform: scale(1.1);
            box-shadow: var(--shadow-btn-hover);
        }
        .floating-btn svg {
            width: 24px;
            height: 24px;
            color: #071A2E;
        }
        .floating-tooltip {
            position: absolute;
            right: 68px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(16, 22, 50, 0.95);
            border: 1px solid rgba(41, 197, 255, 0.3);
            border-radius: 10px;
            padding: 8px 16px;
            white-space: nowrap;
            font-size: 0.8rem;
            color: var(--text);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
            pointer-events: none;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .floating-btn:hover .floating-tooltip {
            opacity: 1;
            visibility: visible;
            right: 76px;
        }

        /* ---------- Animations ---------- */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-up {
            animation: fadeInUp .8s ease both;
        }
        .delay-1 { animation-delay: .1s; }
        .delay-2 { animation-delay: .2s; }
        .delay-3 { animation-delay: .3s; }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .section { padding: 72px 0; }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .pricing-card.featured {
                order: -1;
            }
            .cta-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mega-trigger { display: none; }
            .hamburger { display: flex; }
            .section { padding: 56px 0; }
            .benefits-grid {
                grid-template-columns: 1fr;
            }
            .demo-block {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 48px;
            }
            .demo-block.reverse .demo-visual {
                order: 0;
            }
            .proof-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-form {
                padding: 28px 24px;
            }
            .mega-panel {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-metrics {
                gap: 24px;
            }
            .proof-grid {
                grid-template-columns: 1fr;
            }
            .hero-btns .btn {
                width: 100%;
            }
            .floating-cta {
                bottom: 20px;
                right: 20px;
            }
            .floating-btn {
                width: 48px;
                height: 48px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .pricing-card {
                padding: 32px 24px;
            }
        }

        /* Focus visible */
        .nav-link:focus-visible,
        .logo:focus-visible,
        .btn:focus-visible,
        .mega-trigger:focus-visible,
        .hamburger:focus-visible,
        .faq-question:focus-visible,
        .news-more:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .nav-link:active,
        .btn:active,
        .logo:active {
            opacity: 0.85;
        }

        .btn-primary:focus-visible {
            outline-color: var(--accent);
        }

        .news-card h3 a {
            color: var(--text);
        }

        .mega-panel {
            position: fixed;
            top: 72px;
            right: max(24px, calc((100vw - 1200px) / 2));
        }

        @media (min-width: 769px) {
            .mobile-drawer {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
  --color-primary: #29C5FF;
  --color-accent: #E8B55C;
  --bg-deep: #0A0E27;
  --bg-alt: #0D1330;
  --bg-footer: #070A1C;
  --text-main: #FFFFFF;
  --text-muted: #8A93B8;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.10);
  --radius-card: 16px;
  --radius-btn: 999px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.45);
  --transition: all 0.3s ease;
  --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover, a:focus { outline: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
.btn-primary {
  background: linear-gradient(135deg, #29C5FF 0%, #1B8FCC 100%);
  color: #0A0E27;
  font-weight: 600;
  box-shadow: 0 0 24px rgba(41, 197, 255, 0.35);
}
.btn-primary:hover {
  box-shadow: 0 0 40px rgba(41, 197, 255, 0.5);
  transform: translateY(-2px);
  color: #0A0E27;
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 0 20px rgba(41,197,255,0.3); }
.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text-main);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); box-shadow: 0 0 20px rgba(41,197,255,0.2); transform: translateY(-2px); }
.btn-ghost:active { transform: translateY(0); }
.btn-gold {
  background: linear-gradient(135deg, #E8B55C 0%, #D4933A 100%);
  color: #0A0E27;
  font-weight: 600;
  box-shadow: 0 0 24px rgba(232,181,92,0.3);
}
.btn-gold:hover { box-shadow: 0 0 40px rgba(232,181,92,0.45); transform: translateY(-2px); color: #0A0E27; }
.btn-gold:active { transform: translateY(0); }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  height: 72px;
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  white-space: nowrap;
}
.logo svg { width: 32px; height: 32px; flex-shrink: 0; }
.logo span {
  background: linear-gradient(90deg, #29C5FF 0%, #9BE3FF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 18px rgba(41,197,255,0.25);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--text-muted);
  padding: 8px 2px;
  letter-spacing: 0.02em;
  transition: color 0.3s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  transform: translateX(-50%) scale(0);
  box-shadow: 0 0 12px var(--color-primary);
  transition: transform 0.3s ease;
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { transform: translateX(-50%) scale(1); }
.nav-link.active { color: #fff; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.mega-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.04);
  transition: all 0.3s ease;
}
.mega-trigger:hover { border-color: var(--color-primary); color: var(--color-primary); box-shadow: 0 0 16px rgba(41,197,255,0.2); }
.mega-trigger.open { border-color: var(--color-primary); color: var(--color-primary); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s ease; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mega-panel {
  position: absolute;
  top: 72px;
  right: 24px;
  width: 520px;
  max-width: calc(100vw - 48px);
  background: rgba(13, 19, 48, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  padding: 28px 32px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
  z-index: 99;
}
.mega-panel.show { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-col h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 14px;
  font-weight: 600;
}
.mega-col ul li { margin-bottom: 10px; }
.mega-col ul li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.85);
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.mega-col ul li a:hover { color: var(--color-primary); }
.mega-col .time { font-size: 0.75rem; color: var(--text-muted); }
.mega-cta {
  grid-column: 1 / -1;
  border-radius: 12px;
  padding: 18px 20px;
  background: linear-gradient(135deg, rgba(41,197,255,0.15), rgba(41,197,255,0.04));
  border: 1px solid rgba(41,197,255,0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.mega-cta p { font-size: 0.875rem; color: rgba(255,255,255,0.9); }
.mega-cta a {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}
.mega-cta a:hover { text-decoration: underline; }

.mobile-drawer {
  position: fixed;
  top: 72px; left: 0; right: 0; bottom: 0;
  background: rgba(10, 14, 39, 0.98);
  backdrop-filter: blur(20px);
  z-index: 98;
  padding: 32px 24px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.3s ease;
  overflow-y: auto;
}
.mobile-drawer.show { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-drawer .drawer-links li { margin-bottom: 12px; }
.mobile-drawer .drawer-links a {
  display: block;
  font-size: 1.25rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  padding: 14px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.mobile-drawer .drawer-links a.active { color: var(--color-primary); }
.mobile-drawer .drawer-section { margin-top: 32px; }
.mobile-drawer .drawer-section h4 { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 12px; letter-spacing: 0.08em; }
.mobile-drawer .drawer-section a { display: block; font-size: 0.9375rem; color: rgba(255,255,255,0.75); padding: 8px 0; }
.mobile-drawer .drawer-section a:hover { color: var(--color-primary); }
.mobile-drawer .drawer-cta { margin-top: 28px; }

/* ===== Category Hero ===== */
.cat-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  overflow: hidden;
  background: #0A0E27;
}
.cat-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.cat-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,39,0.6) 0%, #0A0E27 85%);
}
.cat-hero::before {
  content: "";
  position: absolute;
  top: 20%;
  left: 15%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(41,197,255,0.2), transparent 70%);
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
}
.cat-hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: rgba(255,255,255,0.6); }
.cat-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.cat-hero h1 em {
  font-style: normal;
  color: var(--color-primary);
  text-shadow: 0 0 20px rgba(41,197,255,0.3);
}
.cat-hero p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 620px;
}
.cat-hero .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(41,197,255,0.4);
  background: rgba(41,197,255,0.08);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 20px;
}

/* ===== Section general ===== */
.cat-section { padding: 96px 0; position: relative; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-tag::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.cat-section h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.cat-section .sec-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 620px;
  margin-bottom: 40px;
}

/* ===== Split layout ===== */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-text .section-tag { margin-bottom: 16px; }
.split-text h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); margin-bottom: 18px; }
.split-text p { color: var(--text-muted); margin-bottom: 24px; line-height: 1.8; }
.split-points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9375rem;
}
.split-points li svg { flex-shrink: 0; margin-top: 4px; }
.split-image { position: relative; }
.split-image img {
  border-radius: 20px;
  box-shadow: 0 0 40px rgba(41,197,255,0.15);
  border: 1px solid rgba(41,197,255,0.2);
}
.split-image::after {
  content: "";
  position: absolute;
  bottom: -20px; right: -20px;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(41,197,255,0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

/* ===== Feature alternating rows ===== */
.feature-rows { display: flex; flex-direction: column; gap: 80px; }
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.feature-row.reverse .feature-img { order: 2; }
.feature-row.reverse .feature-text { order: 1; }
.feature-img img {
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}
.feature-img:hover img { transform: scale(1.02); box-shadow: 0 16px 48px rgba(0,0,0,0.5), 0 0 24px rgba(41,197,255,0.15); }
.feature-text h3 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: #fff;
}
.feature-text p { color: var(--text-muted); margin-bottom: 20px; font-size: 0.9375rem; line-height: 1.8; }
.feature-text ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.8);
}
.feature-text ul li svg { flex-shrink: 0; margin-top: 4px; }
.feature-text .link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.875rem;
  margin-top: 8px;
}
.feature-text .link-more:hover { gap: 10px; }

/* ===== Card grid ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: all 0.35s ease;
  box-shadow: var(--shadow-card);
}
.glass-card:hover {
  border-color: rgba(41,197,255,0.35);
  box-shadow: var(--shadow-hover), 0 0 24px rgba(41,197,255,0.12);
  transform: translateY(-4px);
}
.glass-card .card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(41,197,255,0.12);
  border: 1px solid rgba(41,197,255,0.2);
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}
.glass-card:hover .card-icon { transform: translateY(-3px); }
.glass-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 10px; }
.glass-card p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; }
.glass-card .card-tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.75rem;
  color: var(--color-accent);
  background: rgba(232,181,92,0.1);
  border: 1px solid rgba(232,181,92,0.2);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ===== Steps / Timeline ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.steps-grid::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(41,197,255,0.4), transparent);
}
.step-item {
  position: relative;
  text-align: left;
  padding: 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.3s ease;
}
.step-item:hover { border-color: rgba(41,197,255,0.3); background: rgba(41,197,255,0.04); }
.step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bg-deep);
  background: linear-gradient(135deg, #29C5FF, #1B8FCC);
  box-shadow: 0 0 20px rgba(41,197,255,0.35);
  margin-bottom: 16px;
}
.step-item h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 8px; }
.step-item p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; }

/* ===== Stats ===== */
.stats-section {
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  top: -100px; left: 5%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(41,197,255,0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.stats-section::after {
  content: "";
  position: absolute;
  bottom: -80px; right: 5%;
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(232,181,92,0.12), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
  position: relative;
  z-index: 2;
}
.stat-num {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  background: linear-gradient(120deg, #E8B55C, #F4D48A, #E8B55C);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 6px;
}
.stat-label { font-size: 0.8125rem; color: var(--text-muted); letter-spacing: 0.06em; }
.stats-quote {
  grid-column: 1 / -1;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-style: italic;
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.6);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== FAQ ===== */
.faq-section { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item.open {
  border-color: rgba(41,197,255,0.35);
  background: rgba(41,197,255,0.05);
  box-shadow: 0 0 24px rgba(41,197,255,0.08);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  transition: color 0.3s ease;
  user-select: none;
}
.faq-q:hover { color: var(--color-primary); }
.faq-icon {
  position: relative;
  width: 28px; height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  transition: all 0.3s ease;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255,255,255,0.7);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }
.faq-item.open .faq-icon { border-color: var(--color-primary); background: rgba(41,197,255,0.15); }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-item.open .faq-icon::before { background: var(--color-primary); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 24px;
}
.faq-a-inner {
  padding-bottom: 22px;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
  background: var(--bg-alt);
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 30%; left: 10%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(41,197,255,0.2), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -40px; right: 10%;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(232,181,92,0.12), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-strip {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.cta-strip h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); line-height: 1.3; margin-bottom: 12px; }
.cta-strip p { color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }
.cta-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.8);
}
.cta-form {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.cta-form label { display: block; font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 6px; }
.cta-form input, .cta-form select, .cta-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  color: #fff;
  font-size: 0.9375rem;
  transition: all 0.3s ease;
  margin-bottom: 16px;
}
.cta-form input:focus, .cta-form select:focus, .cta-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(41,197,255,0.15);
  background: rgba(255,255,255,0.06);
}
.cta-form select option { background: var(--bg-alt); color: #fff; }
.cta-form textarea { min-height: 90px; resize: vertical; }
.cta-form .btn { width: 100%; margin-top: 4px; }

/* ===== Footer ===== */
.site-footer {
  background: #070A1C;
  border-top: 1px solid rgba(41,197,255,0.15);
  padding: 64px 0 32px;
  position: relative;
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; max-width: 260px; }
.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
}
.footer-col ul li a:hover { color: var(--color-primary); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
}
.footer-contact svg { flex-shrink: 0; color: var(--color-primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom span, .footer-bottom a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a:hover { color: var(--color-primary); }

/* ===== Float CTA ===== */
.float-cta {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
}
.float-cta-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #29C5FF, #1B8FCC);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 24px rgba(41,197,255,0.4);
  transition: all 0.3s ease;
  position: relative;
}
.float-cta-btn:hover { transform: scale(1.08); box-shadow: 0 0 36px rgba(41,197,255,0.55); }
.float-cta-btn:active { transform: scale(1); }
.float-cta-bubble {
  position: absolute;
  right: 72px;
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  background: rgba(13,19,48,0.95);
  border: 1px solid rgba(41,197,255,0.3);
  border-radius: 12px;
  padding: 8px 16px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #fff;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  pointer-events: none;
}
.float-cta-btn:hover .float-cta-bubble, .float-cta-btn:focus .float-cta-bubble {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}
.float-cta-btn svg { width: 22px; height: 22px; }

/* ===== Shared helper ===== */
.bg-glow-left { position: absolute; top: -80px; left: -120px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(41,197,255,0.1), transparent 70%); border-radius: 50%; pointer-events: none; }
.bg-glow-right { position: absolute; bottom: -60px; right: -80px; width: 260px; height: 260px; background: radial-gradient(circle, rgba(232,181,92,0.08), transparent 70%); border-radius: 50%; pointer-events: none; }

/* ===== Responsive ===== */
@media (max-width: 1279px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
}
@media (max-width: 1023px) {
  .nav-links { display: none; }
  .mega-trigger { display: none; }
  .hamburger { display: flex; }
  .mega-panel { display: none; }
  .split-layout { grid-template-columns: 1fr; gap: 48px; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row.reverse .feature-img { order: 0; }
  .feature-row.reverse .feature-text { order: 1; }
  .feature-img img { aspect-ratio: 16/10; }
  .cta-strip { grid-template-columns: 1fr; gap: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .cat-hero { padding: 120px 0 64px; }
  .cat-section { padding: 64px 0; }
}
@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .cards-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cat-hero { min-height: 360px; padding: 100px 0 48px; }
  .cat-hero p { font-size: 0.9375rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .cta-form { padding: 24px; }
  .cat-section { padding: 48px 0; }
  .feature-rows { gap: 48px; }
  .float-cta { bottom: 20px; right: 20px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
  .split-image img { border-radius: 14px; }
  .stat-num { font-size: 2.25rem; }
  .mega-panel { right: 16px; left: 16px; width: auto; padding: 20px; }
}

/* roulang page: article */
/* ========== 设计变量 ========== */
:root {
    --color-bg: #0A0E27;
    --color-bg-alt: #0D1330;
    --color-footer: #070A1C;
    --color-primary: #29C5FF;
    --color-accent: #E8B55C;
    --color-text: #FFFFFF;
    --color-text-weak: #8A93B8;
    --color-border: rgba(255,255,255,0.10);
    --glass-bg: rgba(255,255,255,0.06);
    --radius-card: 16px;
    --radius-btn: 999px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
    --shadow-card-hover: 0 12px 48px rgba(0,0,0,0.45);
    --shadow-primary: 0 0 24px rgba(41,197,255,0.35);
    --shadow-primary-hover: 0 0 40px rgba(41,197,255,0.5);
    --nav-height: 72px;
}

/* ========== Reset / Base ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    font-size: 0.9375rem;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s, border-color .25s, box-shadow .25s, transform .25s; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 600; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}
input:-webkit-autofill,
select:-webkit-autofill,
textarea:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px #0D1330 inset !important;
    -webkit-text-fill-color: #fff !important;
}

/* ========== 容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.article-container {
    max-width: 780px;
    margin: 0 auto;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
    transition: all .25s ease;
    border: 1px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, #29C5FF, #1B8FFF);
    color: #fff;
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover { box-shadow: var(--shadow-primary-hover); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: #fff;
}
.btn-outline:hover { border-color: var(--color-primary); box-shadow: 0 0 16px rgba(41,197,255,0.2); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-block { width: 100%; padding: 14px 28px; }

/* ========== Header & Nav ========== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(10,14,39,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav-bar {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 1.375rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.02em;
}
.logo svg { flex-shrink: 0; width: 34px; height: 34px; }
.logo span {
    background: linear-gradient(90deg, #fff, var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 24px rgba(41,197,255,0.25);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}
.nav-link {
    position: relative;
    display: inline-block;
    padding: 10px 18px;
    color: var(--color-text-weak);
    font-size: 0.9375rem;
    border-radius: 8px;
    transition: color .25s;
}
.nav-link:hover { color: #fff; }
.nav-link::after {
    content: '';
    position: absolute;
    left: 50%; bottom: 4px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
    transform: translateX(-50%) scale(0);
    transition: transform .25s;
}
.nav-link:hover::after { transform: translateX(-50%) scale(1); }
.nav-link.active { color: #fff; }
.nav-link.active::after { transform: translateX(-50%) scale(1); box-shadow: 0 0 12px rgba(41,197,255,0.8); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.mega-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    color: var(--color-text-weak);
    font-size: 0.875rem;
    transition: all .25s;
}
.mega-trigger:hover { color: #fff; border-color: var(--color-primary); box-shadow: 0 0 12px rgba(41,197,255,0.25); }
.mega-trigger[aria-expanded="true"] { color: #fff; border-color: var(--color-primary); }
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px; height: 40px;
    padding: 8px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}
.hamburger span { display: block; height: 2px; width: 20px; background: #fff; border-radius: 2px; transition: all .3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mega Panel */
.mega-panel {
    position: absolute;
    top: calc(var(--nav-height) - 8px);
    right: 24px;
    width: 560px;
    max-width: calc(100vw - 48px);
    background: rgba(13,19,48,0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 16px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
    padding: 24px;
    display: none;
    z-index: 1100;
}
.mega-panel.show { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.mega-col h4 {
    font-size: 0.75rem;
    color: var(--color-text-weak);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
    font-weight: 600;
}
.mega-col ul { list-style: none; }
.mega-col li { margin-bottom: 8px; }
.mega-col li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 6px;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.85);
}
.mega-col li a:hover { background: rgba(41,197,255,0.12); color: var(--color-primary); }
.mega-col li a svg { flex-shrink: 0; }
.mega-col .time { font-size: 0.75rem; color: var(--color-text-weak); }
.mega-cta {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(41,197,255,0.15), rgba(41,197,255,0.05));
    border: 1px solid rgba(41,197,255,0.25);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.mega-cta p { font-size: 0.875rem; color: #fff; flex: 1; }
.mega-cta p strong { display: block; font-size: 1rem; }
.mega-cta .btn { padding: 8px 20px; font-size: 0.8125rem; flex-shrink: 0; }

/* Mobile Drawer */
.mobile-drawer {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0; bottom: 0;
    background: rgba(10,14,39,0.98);
    z-index: 999;
    padding: 32px 24px;
    transform: translateX(100%);
    transition: transform .35s ease;
    overflow-y: auto;
    display: block;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-nav { display: flex; flex-direction: column; gap: 4px; }
.drawer-link {
    display: block;
    padding: 14px 16px;
    border-radius: 10px;
    color: var(--color-text-weak);
    font-size: 1.0625rem;
    border-left: 3px solid transparent;
    transition: all .25s;
}
.drawer-link.active { color: #fff; background: rgba(41,197,255,0.08); border-left-color: var(--color-primary); }
.drawer-link:hover { color: #fff; background: rgba(255,255,255,0.04); }
.drawer-footer { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--color-border); }
.drawer-contact { margin-top: 20px; font-size: 0.875rem; color: var(--color-text-weak); line-height: 2; }

/* ========== 文章头部 ========== */
.article-hero {
    position: relative;
    background:
        linear-gradient(180deg, rgba(10,14,39,0.80), rgba(10,14,39,0.93)),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: calc(var(--nav-height) + 56px) 0 56px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.article-hero::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 420px; height: 420px;
    background: radial-gradient(circle, rgba(41,197,255,0.16), transparent 70%);
    pointer-events: none;
}
.article-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    color: var(--color-text-weak);
    margin-bottom: 20px;
}
.article-breadcrumb a { color: var(--color-text-weak); transition: color .2s; }
.article-breadcrumb a:hover { color: var(--color-primary); }
.crumb-sep { color: rgba(255,255,255,0.3); }
.crumb-current { color: rgba(255,255,255,0.6); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-hero h1 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.8125rem;
    color: var(--color-text-weak);
    margin-bottom: 24px;
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta svg { color: var(--color-primary); }
.article-meta a:hover { color: var(--color-primary); }
.article-excerpt {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.8;
    padding: 18px 24px;
    background: rgba(255,255,255,0.04);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 12px 12px 0;
}

/* ========== 正文区 ========== */
.article-reading { padding: 56px 0 24px; }
.article-content {
    font-size: 1rem;
    line-height: 1.9;
    color: rgba(255,255,255,0.88);
    word-break: break-word;
}
.article-content h2 {
    font-size: 1.45rem;
    font-weight: 600;
    margin: 2.2rem 0 0.9rem;
    padding-left: 14px;
    border-left: 4px solid var(--color-primary);
    line-height: 1.4;
}
.article-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 1.8rem 0 0.7rem;
    color: #fff;
}
.article-content p { margin: 1rem 0; }
.article-content ul,
.article-content ol { margin: 1rem 0; padding-left: 1.4rem; }
.article-content li { margin: 0.45rem 0; }
.article-content ul li::marker { color: var(--color-primary); }
.article-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    border-left: 4px solid var(--color-accent);
    background: rgba(255,255,255,0.04);
    border-radius: 0 12px 12px 0;
    color: rgba(255,255,255,0.8);
    font-style: italic;
}
.article-content img {
    border-radius: 12px;
    border: 1px solid var(--color-border);
    margin: 1.5rem 0;
    box-shadow: var(--shadow-card);
}
.article-content a { color: var(--color-primary); border-bottom: 1px solid rgba(41,197,255,0.35); }
.article-content a:hover { color: #fff; border-bottom-color: #fff; }
.article-content code {
    background: rgba(255,255,255,0.08);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.875em;
}

/* ========== 内容未找到 ========== */
.article-reading.no-article { padding: 160px 0; min-height: 60vh; }
.article-not-found { text-align: center; padding: 48px 24px; }
.article-not-found h1 { font-size: 2rem; margin-bottom: 12px; color: #fff; }
.article-not-found p { color: var(--color-text-weak); margin-bottom: 24px; }
.article-not-found a { color: var(--color-primary); border-bottom: 1px solid rgba(41,197,255,0.4); padding-bottom: 2px; }

/* ========== 标签区 ========== */
.article-tags { padding: 24px 0 48px; }
.tags-list { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-item {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid rgba(41,197,255,0.3);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--color-text-weak);
    background: rgba(41,197,255,0.05);
    transition: all .25s;
}
.tag-item:hover { color: var(--color-primary); border-color: var(--color-primary); box-shadow: 0 0 12px rgba(41,197,255,0.2); }

/* ========== 相关推荐 ========== */
.related-section { padding: 64px 0; background: var(--color-bg-alt); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
.section-head h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
.text-link { color: var(--color-primary); font-size: 0.875rem; display: inline-flex; align-items: center; gap: 4px; }
.text-link:hover { color: #fff; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--glass-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: all .3s ease;
}
.related-card:hover { transform: translateY(-6px); border-color: rgba(41,197,255,0.35); box-shadow: var(--shadow-card-hover); }
.related-thumb { aspect-ratio: 16/9; overflow: hidden; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-info { padding: 16px 20px 20px; }
.related-info h3 { font-size: 1rem; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.related-info h3:hover { color: var(--color-primary); }
.related-date { font-size: 0.75rem; color: var(--color-text-weak); }

/* ========== 返回入口 ========== */
.back-entry { text-align: center; padding: 48px 24px; }
.back-entry a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-weak);
    font-size: 0.9375rem;
    padding: 10px 24px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    transition: all .25s;
}
.back-entry a:hover { color: #fff; border-color: var(--color-primary); box-shadow: 0 0 16px rgba(41,197,255,0.2); }
.back-entry svg { transition: transform .25s; }
.back-entry a:hover svg { transform: translateX(-4px); }

/* ========== CTA 区 ========== */
.cta-section {
    padding: 80px 0;
    background:
        radial-gradient(circle at 15% 40%, rgba(41,197,255,0.12), transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(232,181,92,0.10), transparent 30%),
        var(--color-bg);
    border-top: 1px solid rgba(255,255,255,0.04);
}
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.cta-text h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 16px; }
.cta-text > p { color: var(--color-text-weak); margin-bottom: 24px; max-width: 420px; }
.cta-list { list-style: none; display: grid; gap: 12px; }
.cta-list li { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,0.85); }
.cta-list svg { color: var(--color-primary); flex-shrink: 0; }
.cta-form {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 24px;
    padding: 32px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 24px 64px rgba(0,0,0,0.35);
}
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: #fff;
    font-size: 0.9375rem;
    font-family: inherit;
    outline: none;
    transition: border-color .25s, box-shadow .25s;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(138,147,184,0.6); }
.form-group textarea { min-height: 96px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(41,197,255,0.15);
}
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A93B8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 42px;
}
.form-group select option { background: #0D1330; color: #fff; }

/* ========== Footer ========== */
.site-footer {
    background: var(--color-footer);
    border-top: 1px solid rgba(41,197,255,0.2);
    padding: 64px 0 32px;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--color-text-weak); font-size: 0.875rem; max-width: 300px; }
.footer-col h4 { font-size: 0.9375rem; margin-bottom: 16px; color: #fff; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--color-text-weak); font-size: 0.875rem; display: inline-flex; align-items: center; gap: 6px; }
.footer-col a:hover { color: var(--color-primary); }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: var(--color-text-weak); font-size: 0.875rem; }
.footer-contact svg { color: var(--color-primary); flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 0.8125rem; color: var(--color-text-weak); }

/* ========== 浮动 CTA ========== */
.floating-cta {
    position: fixed;
    bottom: 32px; right: 32px;
    z-index: 1200;
    display: flex;
    align-items: center;
    gap: 12px;
}
.floating-tip {
    background: rgba(13,19,48,0.95);
    border: 1px solid rgba(41,197,255,0.3);
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 0.8125rem;
    color: #fff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateX(8px);
    transition: all .3s ease;
    pointer-events: none;
    white-space: nowrap;
}
.floating-cta:hover .floating-tip { opacity: 1; transform: translateX(0); }
.floating-btn {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #29C5FF, #1B8FFF);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-primary);
    transition: all .3s ease;
    color: #fff;
}
.floating-btn:hover { transform: scale(1.08); box-shadow: var(--shadow-primary-hover); }
.floating-btn:active { transform: scale(0.95); }

/* ========== 响应式 ========== */
@media (max-width: 1279px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}
@media (max-width: 1023px) {
    .nav-links { gap: 0; }
    .nav-link { padding: 10px 12px; font-size: 0.875rem; }
    .cta-grid { grid-template-columns: 1fr; }
    .cta-text { text-align: center; }
    .cta-text p { margin-left: auto; margin-right: auto; }
    .cta-list { justify-content: center; text-align: left; }
}
@media (max-width: 767px) {
    .nav-links, .nav-right .mega-trigger { display: none; }
    .hamburger { display: flex; }
    .mega-panel { display: none !important; }
    .related-grid, .footer-grid { grid-template-columns: 1fr; }
    .footer-grid { gap: 32px; }
    .site-footer { padding: 48px 0 24px; }
    .cta-form { padding: 24px 20px; }
    .floating-cta { bottom: 20px; right: 20px; }
    .floating-btn { width: 48px; height: 48px; }
    .article-hero { padding-top: calc(var(--nav-height) + 40px); padding-bottom: 40px; }
    .article-meta { gap: 12px; }
    .back-entry { padding: 32px 16px; }
    .container { padding: 0 16px; }
    .article-excerpt { padding: 14px 16px; font-size: 1rem; }
    .mega-panel { width: 100%; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --bg-main: #0A0E27;
            --bg-alt: #0D1330;
            --bg-footer: #070A1C;
            --primary: #29C5FF;
            --accent: #E8B55C;
            --text-main: #FFFFFF;
            --text-muted: #8A93B8;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --radius: 16px;
            --radius-sm: 8px;
            --shadow-normal: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.45);
            --container: 1200px;
            --font: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

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

        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background .25s ease;
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 板块间距 ===== */
        .section {
            padding: 96px 0;
        }
        .section-alt {
            background-color: var(--bg-alt);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: .03em;
            transition: all .3s ease;
            line-height: 1.4;
        }

        .btn-primary {
            background: linear-gradient(135deg, #29C5FF 0%, #1AA6E8 100%);
            color: #fff;
            box-shadow: 0 0 24px rgba(41, 197, 255, 0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(41, 197, 255, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(41, 197, 255, 0.5);
            outline-offset: 2px;
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #fff;
            backdrop-filter: blur(6px);
        }
        .btn-ghost:hover {
            border-color: rgba(41, 197, 255, 0.6);
            color: var(--primary);
            background: rgba(41, 197, 255, 0.06);
        }
        .btn-ghost:active {
            transform: scale(.98);
        }
        .btn-ghost:focus-visible {
            outline: 3px solid rgba(41, 197, 255, 0.4);
            outline-offset: 2px;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            min-height: 68px;
            background: rgba(10, 14, 39, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            background: rgba(7, 10, 28, 0.92);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: .01em;
            color: #fff;
            white-space: nowrap;
        }

        .logo svg {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            filter: drop-shadow(0 0 8px rgba(41, 197, 255, 0.5));
        }

        .logo span {
            color: #fff;
            text-shadow: 0 0 16px rgba(41, 197, 255, 0.25);
        }

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

        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 999px;
            border: 1px solid transparent;
            transition: all .3s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(41, 197, 255, 0.25);
        }

        .nav-link::after {
            content: '';
            display: block;
            width: 4px;
            height: 4px;
            margin: 4px auto 0;
            border-radius: 50%;
            background: var(--primary);
            opacity: 0;
            transform: scale(0);
            transition: all .3s ease;
        }

        .nav-link:hover::after {
            opacity: .6;
            transform: scale(1);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(41, 197, 255, 0.12);
            border-color: rgba(41, 197, 255, 0.3);
        }

        .nav-link.active::after {
            opacity: 1;
            transform: scale(1);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mega-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: .85rem;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all .3s ease;
        }

        .mega-trigger:hover {
            background: rgba(41, 197, 255, 0.15);
            border-color: rgba(41, 197, 255, 0.4);
            box-shadow: 0 0 16px rgba(41, 197, 255, 0.15);
        }

        .mega-trigger svg {
            transition: transform .3s ease;
        }

        .mega-trigger.open svg {
            transform: rotate(180deg);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 4px;
            transition: all .3s ease;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Mega Panel ===== */
        .mega-panel {
            position: absolute;
            top: 100%;
            right: 24px;
            z-index: 998;
            width: 520px;
            background: rgba(13, 19, 48, 0.96);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            padding: 28px;
            display: grid;
            grid-template-columns: 1.2fr 1.2fr;
            gap: 28px;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-12px);
            transition: all .35s ease;
        }

        .mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-col h4 {
            font-size: .75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: .12em;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

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

        .mega-col ul a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: .88rem;
            color: #fff;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: all .25s ease;
        }

        .mega-col ul a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .mega-col .time {
            font-size: .75rem;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .mega-cta {
            grid-column: 1 / -1;
            background: rgba(41, 197, 255, 0.08);
            border: 1px solid rgba(41, 197, 255, 0.25);
            border-radius: 12px;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mega-cta p {
            font-size: .88rem;
            color: #fff;
            margin: 0;
        }

        .mega-cta-btn {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: .82rem;
            font-weight: 600;
            background: var(--primary);
            color: #07121a;
            box-shadow: 0 0 16px rgba(41, 197, 255, 0.3);
            transition: all .3s ease;
        }

        .mega-cta-btn:hover {
            box-shadow: 0 0 28px rgba(41, 197, 255, 0.5);
            transform: translateY(-2px);
        }

        /* ===== 移动端 Drawer ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: min(360px, 88vw);
            height: 100vh;
            background: rgba(10, 14, 39, 0.98);
            backdrop-filter: blur(20px);
            z-index: 1000;
            transition: right .4s ease;
            display: flex;
            flex-direction: column;
            padding: 32px 24px;
            box-shadow: 0 0 60px rgba(0, 0, 0, 0.6);
        }

        .mobile-drawer.open {
            right: 0;
        }

        .mobile-drawer .drawer-links {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-drawer .drawer-links a {
            display: block;
            padding: 14px 12px;
            font-size: 1rem;
            color: #fff;
            border-radius: 10px;
            border-left: 3px solid transparent;
            transition: all .25s ease;
        }

        .mobile-drawer .drawer-links a:hover {
            background: rgba(255, 255, 255, 0.05);
            border-left-color: var(--primary);
        }

        .mobile-drawer .drawer-links a.active {
            background: rgba(41, 197, 255, 0.12);
            border-left-color: var(--primary);
            color: var(--primary);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
        }

        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .drawer-close {
            align-self: flex-end;
            font-size: 1.5rem;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .25s ease;
        }

        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        /* ===== Hero 区块 ===== */
        .page-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 160px 0 100px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 39, 0.78) 0%, #0A0E27 95%);
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.18), transparent 70%);
            z-index: 1;
        }

        .hero-glow-gold {
            position: absolute;
            right: -60px;
            bottom: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(232, 181, 92, 0.15), transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .8rem;
            font-weight: 500;
            letter-spacing: .05em;
            padding: 8px 20px;
            border-radius: 999px;
            border: 1px solid rgba(41, 197, 255, 0.45);
            background: rgba(41, 197, 255, 0.08);
            color: var(--primary);
            margin-bottom: 24px;
            box-shadow: 0 0 20px rgba(41, 197, 255, 0.1);
        }

        .hero-badge svg {
            width: 14px;
            height: 14px;
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 20px;
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
        }

        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-sub {
            font-size: clamp(1rem, 1.6vw, 1.15rem);
            color: #d4daf0;
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-meta {
            display: flex;
            gap: 36px;
            justify-content: center;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .85rem;
            color: var(--text-muted);
        }

        .hero-meta-item svg {
            width: 18px;
            height: 18px;
            color: var(--primary);
        }

        /* ===== 分类简介区 ===== */
        .intro-section {
            padding: 96px 0 64px;
            background: var(--bg-main);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .intro-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 20px;
        }

        .intro-content p {
            color: var(--text-muted);
            font-size: .96rem;
            margin-bottom: 20px;
            line-height: 1.9;
        }

        .intro-points {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .intro-point {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: .9rem;
            color: #c4cae2;
        }

        .intro-point svg {
            width: 18px;
            height: 18px;
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 3px;
        }

        .intro-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .intro-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            padding: 28px 24px;
            backdrop-filter: blur(12px);
            text-align: center;
            transition: all .3s ease;
        }

        .intro-card:hover {
            border-color: rgba(41, 197, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 30px rgba(41, 197, 255, 0.08);
        }

        .intro-card .number {
            font-size: 2.6rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), #f7d896);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .intro-card .label {
            font-size: .82rem;
            color: var(--text-muted);
            letter-spacing: .04em;
        }

        .intro-card .icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            border-radius: 12px;
            background: rgba(41, 197, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        /* ===== 方案卡片网格区 ===== */
        .solutions-section {
            padding: 64px 0 96px;
            background: var(--bg-alt);
            position: relative;
            overflow: hidden;
        }

        .solutions-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.10), transparent 70%);
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: .95rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .solution-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all .35s ease;
            position: relative;
            overflow: hidden;
        }

        .solution-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: opacity .3s ease;
        }

        .solution-card:hover {
            border-color: rgba(41, 197, 255, 0.35);
            background: rgba(41, 197, 255, 0.04);
            transform: translateY(-6px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 30px rgba(41, 197, 255, 0.06);
        }

        .solution-card:hover::before {
            opacity: 1;
        }

        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(41, 197, 255, 0.12);
            border: 1px solid rgba(41, 197, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 22px;
            color: var(--primary);
            transition: all .3s ease;
        }

        .solution-card:hover .card-icon {
            transform: translateY(-3px);
            box-shadow: 0 0 20px rgba(41, 197, 255, 0.25);
        }

        .solution-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .solution-card p {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .card-tag {
            display: inline-block;
            font-size: .75rem;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(232, 181, 92, 0.12);
            color: var(--accent);
            border: 1px solid rgba(232, 181, 92, 0.2);
        }

        /* ===== 场景区 ===== */
        .scenario-section {
            padding: 96px 0;
        }

        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

        .scenario-block.reverse {
            direction: rtl;
        }

        .scenario-block.reverse > * {
            direction: ltr;
        }

        .scenario-media {
            position: relative;
        }

        .scenario-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: var(--radius);
            box-shadow: 0 0 0 1px rgba(41, 197, 255, 0.2), 0 12px 48px rgba(0, 0, 0, 0.35);
        }

        .scenario-media::after {
            content: '';
            position: absolute;
            inset: -12px;
            border-radius: var(--radius);
            border: 1px solid rgba(41, 197, 255, 0.15);
            z-index: -1;
        }

        .scenario-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .scenario-content > p {
            font-size: .92rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .scenario-content ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }

        .scenario-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: .9rem;
            color: #c4cae2;
        }

        .scenario-content ul li svg {
            width: 18px;
            height: 18px;
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 4px;
        }

        .scenario-badge {
            display: inline-block;
            font-size: .78rem;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(41, 197, 255, 0.12);
            color: var(--primary);
            border: 1px solid rgba(41, 197, 255, 0.25);
            margin-bottom: 16px;
        }

        /* ===== 指标区 ===== */
        .metrics-section {
            background: var(--bg-alt);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }

        .metrics-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.12), transparent 70%);
        }

        .metrics-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(232, 181, 92, 0.12), transparent 70%);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .metric-item .metric-value {
            font-size: clamp(2.5rem, 4vw, 3.2rem);
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent) 0%, #f7d896 60%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-item .metric-label {
            font-size: .8rem;
            color: var(--text-muted);
            letter-spacing: .08em;
        }

        .metric-quote {
            text-align: center;
            margin-top: 48px;
            font-size: .95rem;
            color: #a9b3d4;
            font-style: italic;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 32px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .metric-quote::before {
            content: '"';
            font-size: 3rem;
            color: var(--primary);
            font-family: Georgia, serif;
            position: absolute;
            left: -12px;
            top: 18px;
            opacity: .5;
        }

        /* ===== 流程区 ===== */
        .process-section {
            padding: 96px 0;
        }

        .process-timeline {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .process-step {
            display: flex;
            gap: 28px;
            position: relative;
            padding-bottom: 28px;
        }

        .process-step:last-child {
            padding-bottom: 0;
        }

        .process-step::before {
            content: '';
            position: absolute;
            left: 26px;
            top: 64px;
            bottom: 0;
            width: 2px;
            background: rgba(41, 197, 255, 0.15);
        }

        .process-step:last-child::before {
            display: none;
        }

        .step-num {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(41, 197, 255, 0.12);
            border: 1px solid rgba(41, 197, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(41, 197, 255, 0.1);
            position: relative;
            z-index: 1;
        }

        .step-content {
            flex: 1;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 14px;
            padding: 20px 28px;
            transition: all .3s ease;
        }

        .process-step:hover .step-content {
            border-color: rgba(41, 197, 255, 0.3);
            background: rgba(41, 197, 255, 0.04);
        }

        .step-content h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: .87rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== FAQ 区 ===== */
        .faq-section {
            padding: 96px 0;
            background: var(--bg-alt);
        }

        .faq-list {
            max-width: 880px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 14px;
            overflow: hidden;
            transition: all .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(41, 197, 255, 0.2);
        }

        .faq-item.open {
            border-color: rgba(41, 197, 255, 0.3);
            background: rgba(255, 255, 255, 0.07);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: .95rem;
            font-weight: 500;
            color: #fff;
            transition: color .25s ease;
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-left: 16px;
            transition: all .35s ease;
        }

        .faq-icon svg {
            width: 14px;
            height: 14px;
            stroke: #fff;
            transition: transform .35s ease;
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            border-color: var(--primary);
            transform: rotate(45deg);
        }

        .faq-item.open .faq-icon svg {
            stroke: #07121a;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.85;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 96px 0;
            background: var(--bg-main);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.1), transparent 70%);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .cta-text h2 {
            font-size: clamp(1.5rem, 2.8vw, 2.2rem);
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .cta-text p {
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.9;
            margin-bottom: 24px;
        }

        .form-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 24px;
            padding: 36px 32px;
            backdrop-filter: blur(16px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
        }

        .form-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .form-card .form-sub {
            font-size: .82rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: .8rem;
            font-weight: 500;
            color: #c4cae2;
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: .88rem;
            font-family: var(--font);
            transition: all .3s ease;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(41, 197, 255, 0.12);
        }

        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A93B8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }

        .form-group select option {
            background: #0D1330;
            color: #fff;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-submit {
            width: 100%;
            margin-top: 8px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(41, 197, 255, 0.15);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            font-size: .85rem;
            color: var(--text-muted);
            margin-top: 14px;
            line-height: 1.8;
        }

        .footer-col h4 {
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: #fff;
            margin-bottom: 20px;
        }

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

        .footer-col ul a {
            font-size: .85rem;
            color: var(--text-muted);
            transition: all .25s ease;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .84rem;
            color: var(--text-muted);
        }

        .footer-contact svg {
            flex-shrink: 0;
            color: var(--primary);
            opacity: .8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .78rem;
            color: #6a7397;
        }

        /* ===== 浮动 CTA ===== */
        .floating-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 9999;
        }

        .floating-btn {
            position: relative;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #29C5FF, #1AA6E8);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #07121a;
            box-shadow: 0 0 24px rgba(41, 197, 255, 0.4);
            transition: all .3s ease;
        }

        .floating-btn:hover {
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 0 40px rgba(41, 197, 255, 0.6);
        }

        .floating-label {
            position: absolute;
            right: 68px;
            top: 50%;
            transform: translateY(-50%) scale(0);
            transform-origin: right center;
            font-size: .78rem;
            font-weight: 500;
            color: #fff;
            background: rgba(10, 14, 39, 0.95);
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid rgba(41, 197, 255, 0.3);
            white-space: nowrap;
            opacity: 0;
            transition: all .3s ease;
        }

        .floating-btn:hover .floating-label {
            opacity: 1;
            transform: translateY(-50%) scale(1);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 24px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .scenario-block {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .scenario-block.reverse {
                direction: ltr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 64px 0;
            }
            .nav-bar {
                height: 64px;
            }
            .site-header {
                min-height: 64px;
            }
            .mega-trigger {
                display: none;
            }
            .logo {
                font-size: 1.05rem;
            }
            .logo svg {
                width: 26px;
                height: 26px;
            }
            .page-hero {
                min-height: 480px;
                padding: 140px 0 80px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .intro-cards {
                grid-template-columns: 1fr 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .process-timeline {
                padding-left: 0;
            }
            .process-step {
                gap: 16px;
            }
            .process-step::before {
                left: 18px;
            }
            .step-num {
                width: 38px;
                height: 38px;
                font-size: .9rem;
            }
            .step-content {
                padding: 16px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .mega-panel {
                display: none;
            }
            .floating-cta {
                bottom: 24px;
                right: 24px;
            }
            .scenario-media img {
                height: 230px;
            }
            .faq-question {
                font-size: .88rem;
                padding: 16px 18px;
            }
            .faq-answer-inner {
                padding: 0 18px 18px;
            }
            .form-card {
                padding: 28px 20px;
            }
        }

        @media (max-width: 480px) {
            .intro-cards {
                grid-template-columns: 1fr;
            }
            .hero-meta {
                flex-direction: column;
                gap: 12px;
                align-items: center;
            }
            .metrics-grid {
                gap: 32px;
            }
        }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #29C5FF;
            --color-accent: #E8B55C;
            --color-bg: #0A0E27;
            --color-bg-alt: #0D1330;
            --color-bg-footer: #070A1C;
            --color-text: #FFFFFF;
            --color-text-muted: #8A93B8;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --glass-border-hover: rgba(41, 197, 255, 0.35);
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.45);
            --transition: 0.3s ease;
            --container-max: 1200px;
        }

        /* ========== Base Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 1rem;
        }
        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== 通用容器 / 按钮 / 板块 ========== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 96px 0;
            position: relative;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(41, 197, 255, 0.12);
            border: 1px solid rgba(41, 197, 255, 0.35);
            padding: 4px 14px;
            border-radius: var(--radius-btn);
            margin-bottom: 16px;
            font-weight: 500;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            margin-bottom: 48px;
            max-width: 640px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #29C5FF, #0E9BE0);
            color: #fff;
            box-shadow: 0 0 24px rgba(41, 197, 255, 0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(41, 197, 255, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(41, 197, 255, 0.3);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--color-text);
        }
        .btn-ghost:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(41, 197, 255, 0.08);
        }
        .btn-ghost:active {
            background: rgba(41, 197, 255, 0.15);
        }
        .btn-accent {
            background: linear-gradient(135deg, #E8B55C, #d49a3f);
            color: #0A0E27;
            box-shadow: 0 0 24px rgba(232, 181, 92, 0.3);
        }
        .btn-accent:hover {
            box-shadow: 0 0 40px rgba(232, 181, 92, 0.45);
            transform: translateY(-2px);
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: rgba(10, 14, 39, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--color-text);
        }
        .logo svg {
            width: 34px;
            height: 34px;
            filter: drop-shadow(0 0 10px rgba(41, 197, 255, 0.4));
        }
        .logo span {
            text-shadow: 0 0 16px rgba(41, 197, 255, 0.35);
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--color-primary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .nav-link:hover {
            color: var(--color-text);
        }
        .nav-link:hover::after {
            opacity: 1;
        }
        .nav-link.active {
            color: var(--color-text);
        }
        .nav-link.active::after {
            opacity: 1;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .mega-trigger {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            padding: 8px 16px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.03);
        }
        .mega-trigger:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .mega-trigger[aria-expanded="true"] svg {
            transform: rotate(180deg);
        }
        .mega-trigger svg {
            transition: transform var(--transition);
        }
        /* Mega 面板 */
        .mega-panel {
            position: fixed;
            top: 80px;
            right: 24px;
            width: 520px;
            max-width: calc(100vw - 32px);
            background: rgba(13, 19, 48, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            padding: 28px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition);
            z-index: 99;
        }
        .mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mega-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }
        .mega-col ul li {
            margin-bottom: 8px;
        }
        .mega-col ul a {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .mega-col ul a:hover {
            color: var(--color-primary);
        }
        .mega-col .time {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .mega-cta {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, rgba(41, 197, 255, 0.12), rgba(232, 181, 92, 0.08));
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-top: 4px;
        }
        .mega-cta p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .mega-cta a {
            font-size: 0.9rem;
            color: var(--color-primary);
            font-weight: 500;
            white-space: nowrap;
        }
        .mega-cta a:hover {
            color: var(--color-accent);
        }
        /* 汉堡按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* 移动端 Drawer */
        .mobile-drawer {
            display: none;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 39, 0.65), #0A0E27 92%);
        }
        .hero::after {
            content: '';
            position: absolute;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.28), transparent 70%);
            top: -120px;
            left: -120px;
            pointer-events: none;
        }
        .hero-glow {
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 181, 92, 0.20), transparent 70%);
            bottom: -80px;
            right: -80px;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 0 24px;
            max-width: 800px;
        }
        .hero-badge {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            border: 1px solid rgba(41, 197, 255, 0.4);
            background: rgba(41, 197, 255, 0.10);
            padding: 6px 18px;
            border-radius: var(--radius-btn);
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 4rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .hero .hero-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-scroll {
            position: absolute;
            bottom: 36px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
            letter-spacing: 0.08em;
        }
        .hero-scroll svg {
            width: 24px;
            height: 24px;
            margin: 0 auto 6px;
            animation: scrollPulse 2s infinite;
        }
        @keyframes scrollPulse {
            0%,
            100% {
                transform: translateY(0);
                opacity: 0.6;
            }
            50% {
                transform: translateY(8px);
                opacity: 1;
            }
        }

        /* ========== 介绍区 ========== */
        .intro-section {
            background: var(--color-bg);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .intro-text .section-title {
            margin-bottom: 20px;
        }
        .intro-text p {
            color: var(--color-text-muted);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .feature-list {
            margin-top: 16px;
        }
        .feature-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            margin-bottom: 12px;
            font-size: 0.92rem;
            color: var(--color-text-muted);
        }
        .feature-list li svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            margin-top: 4px;
            color: var(--color-primary);
        }
        .intro-image {
            position: relative;
        }
        .intro-image img {
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .intro-image::before {
            content: '';
            position: absolute;
            inset: -12px;
            border-radius: 24px;
            border: 1px solid rgba(41, 197, 255, 0.25);
            pointer-events: none;
            z-index: -1;
        }

        /* ========== 时间线 ========== */
        .timeline-section {
            background: var(--color-bg-alt);
            position: relative;
            overflow: hidden;
        }
        .timeline-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.10), transparent 70%);
            top: 60px;
            right: -100px;
        }
        .timeline {
            position: relative;
            max-width: 760px;
            margin: 0 auto;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, rgba(41, 197, 255, 0.6), rgba(41, 197, 255, 0.1));
        }
        .timeline-item {
            position: relative;
            padding-bottom: 48px;
            display: flex;
            gap: 24px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -33px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(41, 197, 255, 0.15), 0 0 16px rgba(41, 197, 255, 0.5);
        }
        .timeline-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: all var(--transition);
            flex: 1;
        }
        .timeline-card:hover {
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .timeline-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .timeline-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        /* ========== 合作模式卡片 ========== */
        .models-section {
            background: var(--color-bg);
        }
        .models-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .model-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .model-card:hover {
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .model-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .model-body {
            padding: 24px;
        }
        .model-body h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--color-text);
        }
        .model-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin-bottom: 14px;
        }
        .model-body .model-tag {
            display: inline-block;
            font-size: 0.75rem;
            color: var(--color-accent);
            background: rgba(232, 181, 92, 0.10);
            border: 1px solid rgba(232, 181, 92, 0.3);
            padding: 2px 10px;
            border-radius: var(--radius-btn);
        }

        /* ========== 数据区 ========== */
        .proof-section {
            background: var(--color-bg-alt);
            position: relative;
            overflow: hidden;
        }
        .proof-section::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 181, 92, 0.12), transparent 70%);
            bottom: -160px;
            left: -160px;
        }
        .proof-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stat {
            text-align: center;
            padding: 20px 12px;
        }
        .stat .num {
            font-size: clamp(2.5rem, 4vw, 3.5rem);
            font-weight: 700;
            background: linear-gradient(180deg, #F5D48A, #E8B55C);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .stat .label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }
        .proof-quote {
            max-width: 640px;
            margin: 48px auto 0;
            text-align: center;
            font-style: italic;
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.6);
            border-left: 0;
            padding: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 880px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            transition: all var(--transition);
            overflow: hidden;
        }
        .faq-item.active {
            border-color: var(--glass-border-hover);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            user-select: none;
        }
        .faq-q:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 300;
            flex-shrink: 0;
            transition: transform var(--transition), border-color var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
        }
        .faq-a p {
            padding-bottom: 20px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 96px 0;
            background: var(--color-bg-alt);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(41, 197, 255, 0.15), transparent 70%);
            top: -100px;
            right: -100px;
        }
        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 600;
            margin-bottom: 16px;
        }
        .cta-box p {
            color: var(--color-text-muted);
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-bg-footer);
            border-top: 1px solid rgba(41, 197, 255, 0.15);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            max-width: 280px;
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--color-primary);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-text-muted);
        }
        .footer-contact svg {
            flex-shrink: 0;
            color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ========== 浮动 CTA ========== */
        .float-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 200;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 10px;
        }
        .float-cta .cta-bubble {
            background: var(--color-bg-alt);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 8px 16px;
            font-size: 0.85rem;
            color: var(--color-text);
            box-shadow: var(--shadow-card);
            opacity: 0;
            visibility: hidden;
            transform: translateX(8px);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .float-cta:hover .cta-bubble {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
        }
        .float-cta .cta-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #29C5FF, #0E9BE0);
            box-shadow: 0 0 24px rgba(41, 197, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            color: #fff;
        }
        .float-cta .cta-btn:hover {
            box-shadow: 0 0 40px rgba(41, 197, 255, 0.6);
            transform: scale(1.06);
        }
        .float-cta .cta-btn:active {
            transform: scale(0.96);
            box-shadow: 0 0 16px rgba(41, 197, 255, 0.3);
        }
        .float-cta .cta-btn svg {
            width: 24px;
            height: 24px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1279px) {
            .models-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .proof-stats {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) and (max-width: 1279px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .intro-image img {
                height: 300px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: 48px 0;
            }
            /* 导航折叠 */
            .nav-links {
                display: none;
            }
            .mega-trigger {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer {
                display: block;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 14, 39, 0.97);
                backdrop-filter: blur(16px);
                padding: 24px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.10);
                transform: translateY(-120%);
                transition: transform var(--transition);
                z-index: 99;
            }
            .mobile-drawer.open {
                transform: translateY(0);
            }
            .mobile-drawer .nav-links {
                display: flex;
                flex-direction: column;
                gap: 4px;
                margin-bottom: 16px;
            }
            .mobile-drawer .nav-link {
                font-size: 1rem;
                padding: 12px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .mobile-drawer .nav-link::after {
                display: none;
            }
            .mobile-drawer .mega-trigger {
                display: flex;
                width: 100%;
                justify-content: space-between;
                border-color: rgba(255, 255, 255, 0.15);
                padding: 12px 16px;
                margin-bottom: 12px;
            }
            .mobile-mega {
                padding-left: 8px;
            }
            .mobile-mega h4 {
                font-size: 0.8rem;
                color: var(--color-primary);
                margin: 12px 0 6px;
            }
            .mobile-mega ul li {
                margin-bottom: 6px;
            }
            .mobile-mega ul a {
                font-size: 0.9rem;
                color: var(--color-text-muted);
            }
            .mobile-mega .time {
                font-size: 0.75rem;
                color: rgba(255, 255, 255, 0.3);
                margin-left: 8px;
            }
            /* Hero */
            .hero {
                min-height: 90vh;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero .btn {
                width: 200px;
            }
            /* 栅格 */
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-image img {
                height: 240px;
            }
            .models-grid {
                grid-template-columns: 1fr;
            }
            .proof-stats {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat {
                padding: 12px;
            }
            .timeline {
                padding-left: 32px;
            }
            .timeline-item {
                gap: 16px;
            }
            .timeline-dot {
                left: -25px;
            }
            /* Footer */
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .float-cta {
                bottom: 20px;
                right: 20px;
            }
        }