/* roulang page: index */
:root {
            --bg-deep: #0A0A14;
            --bg-card: rgba(10, 10, 20, 0.7);
            --bg-card-hover: rgba(18, 18, 35, 0.85);
            --bg-nav: rgba(8, 8, 18, 0.75);
            --purple-deep: #4A0E4E;
            --cyan-electric: #00D2FF;
            --neon-green: #39FF14;
            --text-primary: #F0EDF5;
            --text-secondary: #B8B5C9;
            --text-muted: #7A7794;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 210, 255, 0.4);
            --border-neon: rgba(57, 255, 20, 0.5);
            --gradient-brand: linear-gradient(135deg, #4A0E4E 0%, #6B1D6E 25%, #3A0F8F 50%, #1E5FBF 75%, #00D2FF 100%);
            --gradient-hero: linear-gradient(160deg, #1A0A1E 0%, #0D0D2B 30%, #0A1A2E 60%, #0A0A14 100%);
            --gradient-card-border: linear-gradient(135deg, rgba(0, 210, 255, 0.5) 0%, rgba(74, 14, 78, 0.5) 50%, rgba(57, 255, 20, 0.3) 100%);
            --gradient-btn: linear-gradient(135deg, #4A0E4E 0%, #6B1D6E 20%, #3A0F8F 60%, #00D2FF 100%);
            --gradient-cta: linear-gradient(150deg, #4A0E4E 0%, #2A0A4E 20%, #0F2A6F 55%, #00D2FF 100%);
            --gradient-badge: linear-gradient(135deg, rgba(0, 210, 255, 0.25) 0%, rgba(57, 255, 20, 0.2) 100%);
            --gradient-badge-premium: linear-gradient(135deg, #39FF14 0%, #00D2FF 100%);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 16px 48px rgba(0, 210, 255, 0.15), 0 4px 20px rgba(57, 255, 20, 0.08);
            --shadow-glow: 0 0 40px rgba(0, 210, 255, 0.2), 0 0 80px rgba(74, 14, 78, 0.15);
            --shadow-neon: 0 0 24px rgba(57, 255, 20, 0.35);
            --radius-xs: 8px;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-full: 9999px;
            --radius-badge: 20px;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', '思源黑体', 'Inter', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
            --font-number: 'Rajdhani', 'Inter', 'PingFang SC', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
            --max-width: 1280px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 1rem;
            min-height: 100vh;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(74, 14, 78, 0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 5%, rgba(0, 210, 255, 0.12) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 60%, rgba(57, 255, 20, 0.04) 0%, transparent 55%);
            background-attachment: fixed;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        input,
        textarea {
            font-family: var(--font-body);
            outline: none;
            transition: all var(--transition-smooth);
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-nav);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }
        .nav.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(0, 210, 255, 0.2);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            height: 100%;
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
            cursor: pointer;
        }
        .nav-logo:hover {
            opacity: 0.85;
        }
        .nav-search-wrap {
            flex: 1;
            display: flex;
            justify-content: center;
            min-width: 200px;
        }
        .nav-search {
            width: 100%;
            max-width: 420px;
            position: relative;
        }
        .nav-search input {
            width: 100%;
            height: 44px;
            padding: 0 20px 0 44px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.06);
            border: 1.5px solid rgba(0, 210, 255, 0.35);
            color: var(--text-primary);
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-smooth);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search input:focus {
            border-color: var(--cyan-electric);
            box-shadow: 0 0 20px rgba(0, 210, 255, 0.25), 0 0 50px rgba(0, 210, 255, 0.1);
            background: rgba(255, 255, 255, 0.1);
            outline: 3px solid rgba(0, 210, 255, 0.12);
        }
        .nav-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.1rem;
            color: var(--text-muted);
            pointer-events: none;
            transition: color var(--transition-fast);
        }
        .nav-search input:focus~.nav-search-icon,
        .nav-search input:focus+.nav-search-icon {
            color: var(--cyan-electric);
        }
        .nav-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.05rem;
            pointer-events: none;
            z-index: 1;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-shrink: 0;
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .nav-links a {
            color: rgba(240, 237, 245, 0.7);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--cyan-electric);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--text-primary);
        }
        .nav-links a:hover::after,
        .nav-links a:focus-visible::after {
            width: 100%;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition-smooth);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .nav-mobile-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: rgba(8, 8, 20, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 24px;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
        }
        .nav-mobile-drawer.open {
            display: flex;
        }
        .nav-mobile-drawer a {
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .nav-mobile-drawer a:hover,
        .nav-mobile-drawer a:focus-visible {
            background: rgba(0, 210, 255, 0.1);
            color: var(--text-primary);
        }

        /* ========== HERO ========== */
        .hero {
            padding-top: calc(var(--nav-height) + 50px);
            padding-bottom: 80px;
            position: relative;
            overflow: hidden;
            min-height: 85vh;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -15%;
            width: 50%;
            height: 70%;
            background: radial-gradient(ellipse, rgba(74, 14, 78, 0.5) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            animation: heroGlow1 8s ease-in-out infinite alternate;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 45%;
            height: 60%;
            background: radial-gradient(ellipse, rgba(0, 210, 255, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            animation: heroGlow2 10s ease-in-out infinite alternate;
        }
        @keyframes heroGlow1 {
            0% {
                transform: translate(0, 0) scale(1);
                opacity: 0.5;
            }
            100% {
                transform: translate(30px, -20px) scale(1.1);
                opacity: 0.7;
            }
        }
        @keyframes heroGlow2 {
            0% {
                transform: translate(0, 0) scale(1);
                opacity: 0.25;
            }
            100% {
                transform: translate(-40px, 30px) scale(1.15);
                opacity: 0.45;
            }
        }
        .hero .container {
            display: flex;
            align-items: center;
            gap: 50px;
            position: relative;
            z-index: 2;
        }
        .hero-left {
            flex: 0 0 55%;
            position: relative;
        }
        .hero-badge-float {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            background: var(--gradient-badge);
            border: 1px solid rgba(0, 210, 255, 0.3);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            margin-bottom: 24px;
            animation: badgePulse 3s ease-in-out infinite;
            backdrop-filter: blur(6px);
            font-family: var(--font-number);
        }
        @keyframes badgePulse {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 210, 255, 0.2);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 210, 255, 0.45), 0 0 50px rgba(57, 255, 20, 0.15);
            }
        }
        .hero-badge-float .badge-icon {
            font-size: 1.2rem;
        }
        .hero-badge-float .badge-num {
            font-size: 1.1rem;
            font-weight: 700;
            background: linear-gradient(135deg, #00D2FF, #39FF14);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero h1 {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            background: linear-gradient(180deg, #FFFFFF 0%, #D0CFE8 50%, #A0D8F0 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 480px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gradient-btn);
            color: #fff;
            border: none;
            box-shadow: 0 6px 24px rgba(0, 210, 255, 0.2);
        }
        .btn-primary:hover {
            box-shadow: 0 10px 36px rgba(0, 210, 255, 0.35), 0 0 60px rgba(74, 14, 78, 0.25);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 16px rgba(0, 210, 255, 0.25);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 210, 255, 0.6);
            outline-offset: 3px;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--neon-green);
            color: var(--neon-green);
            box-shadow: 0 0 12px rgba(57, 255, 20, 0.1);
        }
        .btn-outline:hover {
            background: rgba(57, 255, 20, 0.1);
            box-shadow: 0 0 28px rgba(57, 255, 20, 0.3), 0 0 50px rgba(57, 255, 20, 0.1);
            transform: translateY(-2px);
            border-color: #5FFF30;
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(57, 255, 20, 0.6);
            outline-offset: 3px;
        }
        .hero-right {
            flex: 0 0 40%;
            position: relative;
            min-height: 420px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 2px solid rgba(0, 210, 255, 0.25);
            box-shadow: var(--shadow-glow);
        }
        .hero-right img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .hero-right::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            background: linear-gradient(180deg, rgba(0, 210, 255, 0.08) 0%, rgba(74, 14, 78, 0.2) 100%);
            pointer-events: none;
        }
        .hero-particle {
            position: absolute;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--cyan-electric);
            pointer-events: none;
            animation: floatParticle 6s ease-in-out infinite;
            opacity: 0.6;
        }
        @keyframes floatParticle {
            0%,
            100% {
                transform: translateY(0) translateX(0);
                opacity: 0.4;
            }
            25% {
                transform: translateY(-40px) translateX(15px);
                opacity: 0.8;
            }
            50% {
                transform: translateY(-20px) translateX(-10px);
                opacity: 0.5;
            }
            75% {
                transform: translateY(-50px) translateX(5px);
                opacity: 0.7;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 90px 0;
            position: relative;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            background: rgba(0, 210, 255, 0.08);
            border: 1px solid rgba(0, 210, 255, 0.2);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--cyan-electric);
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .section h2 {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .section-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        /* ========== FEATURES GRID (ASYMMETRIC) ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .feat-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 28px 30px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feat-card::before {
            content: '';
            position: absolute;
            top: -1px;
            left: -1px;
            right: -1px;
            bottom: -1px;
            border-radius: var(--radius-lg);
            background: var(--gradient-card-border);
            opacity: 0;
            transition: opacity var(--transition-smooth);
            z-index: -1;
            pointer-events: none;
        }
        .feat-card:hover {
            transform: translateY(-2px) scale(1.01);
            box-shadow: var(--shadow-card-hover);
            border-color: transparent;
            background: var(--bg-card-hover);
        }
        .feat-card:hover::before {
            opacity: 1;
        }
        .feat-card-full {
            grid-column: span 12;
            flex-direction: row;
            align-items: center;
            gap: 32px;
            padding: 36px 40px;
        }
        .feat-card-full .feat-mega-num {
            font-family: var(--font-number);
            font-size: 8rem;
            font-weight: 900;
            line-height: 1;
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            flex-shrink: 0;
            opacity: 0.8;
            min-width: 120px;
            text-align: center;
        }
        .feat-card-third {
            grid-column: span 4;
        }
        .feat-card-wide {
            grid-column: span 7;
        }
        .feat-card-narrow {
            grid-column: span 5;
        }
        .feat-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(0, 210, 255, 0.12);
            border: 1.5px solid rgba(0, 210, 255, 0.3);
            flex-shrink: 0;
        }
        .feat-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 3px 12px;
            border-radius: var(--radius-badge);
            background: var(--gradient-badge);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--cyan-electric);
            font-family: var(--font-number);
            width: fit-content;
            border: 1px solid rgba(0, 210, 255, 0.2);
        }
        .feat-badge.neon {
            background: rgba(57, 255, 20, 0.1);
            color: var(--neon-green);
            border-color: rgba(57, 255, 20, 0.3);
        }
        .feat-card h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.3;
        }
        .feat-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CASES WATERFALL ========== */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            grid-auto-rows: 120px;
        }
        .case-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            position: relative;
            cursor: pointer;
        }
        .case-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(0, 210, 255, 0.35);
        }
        .case-card-tall {
            grid-row: span 3;
        }
        .case-card-med {
            grid-row: span 2;
        }
        .case-card-short {
            grid-row: span 2;
        }
        .case-card-img {
            flex: 1;
            min-height: 140px;
            position: relative;
            overflow: hidden;
        }
        .case-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .case-card:hover .case-card-img img {
            transform: scale(1.05);
        }
        .case-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 10, 20, 0.85) 100%);
            pointer-events: none;
        }
        .case-card-body {
            padding: 16px 18px;
            position: relative;
            z-index: 1;
            background: rgba(10, 10, 20, 0.6);
            backdrop-filter: blur(4px);
        }
        .case-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .case-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .case-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            z-index: 5;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            background: var(--gradient-badge);
            border: 1px solid rgba(0, 210, 255, 0.3);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--cyan-electric);
            font-family: var(--font-number);
            backdrop-filter: blur(6px);
        }

        /* ========== COMPARISON ========== */
        .comparison-wrapper {
            display: flex;
            gap: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .comp-features-col {
            flex: 0 0 280px;
            background: rgba(10, 10, 20, 0.5);
            padding: 32px 24px;
            border-right: 1px solid var(--border-subtle);
        }
        .comp-features-col h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .comp-features-col ul li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .comp-plan-col {
            flex: 1;
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            border-radius: 0;
        }
        .comp-plan-col.premium {
            border: 2px solid transparent;
            border-image: var(--gradient-card-border) 1;
            border-radius: 0;
            position: relative;
            z-index: 2;
            box-shadow: 0 0 30px rgba(0, 210, 255, 0.1);
        }
        .comp-plan-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            background: var(--gradient-badge-premium);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: #0A0A14;
            margin-bottom: 14px;
            font-family: var(--font-number);
        }
        .comp-plan-col h4 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .comp-price {
            font-family: var(--font-number);
            font-size: 3rem;
            font-weight: 700;
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 6px;
            line-height: 1;
        }
        .comp-price-sub {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .comp-plan-col ul {
            text-align: left;
            margin-bottom: 24px;
        }
        .comp-plan-col ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comp-plan-col ul li::before {
            content: '✓';
            color: var(--neon-green);
            font-weight: 700;
            flex-shrink: 0;
        }
        .comp-plan-col:hover {
            background: rgba(0, 210, 255, 0.04);
        }
        .comp-plan-col .btn {
            width: 100%;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .comparison-wrapper {
                flex-direction: column;
                overflow-x: auto;
            }
            .comp-features-col {
                flex: none;
                width: 100%;
                border-right: none;
                border-bottom: 1px solid var(--border-subtle);
                padding: 20px;
            }
            .comp-plan-col {
                min-width: 100%;
                padding: 20px;
            }
            .comparison-scroll {
                display: flex;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                gap: 0;
                scroll-snap-type: x mandatory;
            }
            .comparison-scroll .comp-plan-col {
                min-width: 260px;
                scroll-snap-align: start;
                flex-shrink: 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item.active {
            background: var(--bg-card-hover);
            border-color: rgba(0, 210, 255, 0.3);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            text-align: left;
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
            outline: none;
        }
        .faq-question:focus-visible {
            outline: 2px solid rgba(0, 210, 255, 0.5);
            outline-offset: -2px;
            border-radius: var(--radius-lg);
        }
        .faq-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--neon-green);
            flex-shrink: 0;
            box-shadow: 0 0 10px rgba(57, 255, 20, 0.5);
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-dot {
            box-shadow: 0 0 20px rgba(57, 255, 20, 0.7);
            transform: scale(1.3);
        }
        .faq-arrow {
            margin-left: auto;
            font-size: 1.2rem;
            transition: transform var(--transition-smooth);
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--cyan-electric);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px 48px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            position: relative;
            padding: 80px 0;
            text-align: center;
            background: var(--gradient-cta);
            border-radius: var(--radius-xl);
            margin: 0 24px;
            overflow: hidden;
            box-shadow: var(--shadow-glow);
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .cta-banner .container {
            position: relative;
            z-index: 2;
        }
        .cta-banner h2 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
        }
        .cta-banner .btn {
            display: inline-flex;
        }
        .cta-banner .btn-primary {
            background: #fff;
            color: #1A0A1E;
            font-weight: 700;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }
        .cta-banner .btn-primary:hover {
            box-shadow: 0 14px 44px rgba(0, 0, 0, 0.4);
            transform: translateY(-3px);
        }

        /* ========== FOOTER ========== */
        .footer {
            background: rgba(6, 6, 16, 0.95);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1.5fr;
            gap: 36px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-logo-text {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--cyan-electric);
        }
        .footer-socials {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            cursor: pointer;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.03);
        }
        .footer-social:hover {
            border-color: var(--cyan-electric);
            color: var(--cyan-electric);
            box-shadow: 0 0 20px rgba(0, 210, 255, 0.3);
            background: rgba(0, 210, 255, 0.08);
        }
        .footer-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-form input,
        .footer-form textarea {
            width: 100%;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1.5px solid rgba(0, 210, 255, 0.25);
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            resize: vertical;
        }
        .footer-form input:focus,
        .footer-form textarea:focus {
            border-color: var(--cyan-electric);
            box-shadow: 0 0 16px rgba(0, 210, 255, 0.2);
            outline: 2px solid rgba(0, 210, 255, 0.1);
            background: rgba(255, 255, 255, 0.08);
        }
        .footer-form textarea {
            min-height: 80px;
            max-height: 150px;
        }
        .footer-form .btn {
            font-size: 0.9rem;
            padding: 10px 20px;
            align-self: flex-start;
        }
        .footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
                gap: 36px;
            }
            .hero-left {
                flex: 1;
                text-align: center;
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            .hero-subtitle {
                max-width: 100%;
            }
            .hero-right {
                flex: 1;
                width: 100%;
                min-height: 300px;
                max-width: 500px;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero-btns {
                justify-content: center;
            }
            .features-grid {
                grid-template-columns: repeat(6, 1fr);
                gap: 18px;
            }
            .feat-card-full {
                grid-column: span 6;
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .feat-card-full .feat-mega-num {
                font-size: 5rem;
                min-width: auto;
            }
            .feat-card-third {
                grid-column: span 3;
            }
            .feat-card-wide {
                grid-column: span 4;
            }
            .feat-card-narrow {
                grid-column: span 2;
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
                grid-auto-rows: 100px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section h2 {
                font-size: 2rem;
            }
            .cta-banner h2 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-search-wrap {
                flex: 1;
                max-width: 100%;
            }
            .nav-search {
                max-width: 100%;
            }
            .nav-inner {
                gap: 12px;
            }
            .hero {
                padding-top: calc(var(--nav-height) + 30px);
                padding-bottom: 50px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-right {
                min-height: 220px;
                max-width: 100%;
            }
            .hero .container {
                gap: 24px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feat-card-full,
            .feat-card-third,
            .feat-card-wide,
            .feat-card-narrow {
                grid-column: span 1;
            }
            .feat-card-full {
                flex-direction: column;
                text-align: center;
            }
            .feat-card-full .feat-mega-num {
                font-size: 4rem;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                grid-auto-rows: auto;
            }
            .case-card-tall,
            .case-card-med,
            .case-card-short {
                grid-row: auto;
            }
            .case-card-img {
                min-height: 180px;
            }
            .comparison-wrapper {
                flex-direction: column;
            }
            .comp-features-col {
                flex: none;
                width: 100%;
            }
            .cta-banner {
                margin: 0 12px;
                padding: 50px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-banner h2 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: 50px 0;
            }
            .section h2 {
                font-size: 1.7rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .hero-badge-float {
                font-size: 0.8rem;
                padding: 5px 12px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.1rem;
            }
            .nav-search input {
                height: 38px;
                font-size: 0.85rem;
                padding: 0 14px 0 36px;
            }
            .nav-search-icon {
                left: 12px;
                font-size: 0.9rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-btns {
                flex-direction: column;
                width: 100%;
            }
            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
            .btn {
                padding: 12px 20px;
                font-size: 0.85rem;
            }
            .section h2 {
                font-size: 1.4rem;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
            .cta-banner p {
                font-size: 0.95rem;
            }
            .feat-card {
                padding: 20px;
            }
            .feat-card-full {
                padding: 24px;
            }
            .case-card-body h4 {
                font-size: 0.95rem;
            }
            .footer {
                padding: 36px 0 20px;
            }
        }