/* roulang page: index */
:root {
            --bg-deep: #0B0C1E;
            --bg-card: #161A2E;
            --bg-surface: #121634;
            --accent-lime: #C4F000;
            --accent-violet: #A66CFF;
            --accent-violet-rgb: 166, 108, 255;
            --accent-lime-rgb: 196, 240, 0;
            --text-primary: #E9ECF2;
            --text-secondary: #8890A7;
            --text-muted: #5A6078;
            --border-subtle: rgba(166, 108, 255, 0.25);
            --border-lime: rgba(196, 240, 0, 0.35);
            --radius-xl: 24px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 32px rgba(166, 108, 255, 0.12);
            --shadow-glow-lime: 0 0 28px rgba(196, 240, 0, 0.25);
            --shadow-glow-violet: 0 0 32px rgba(166, 108, 255, 0.22);
            --shadow-elevated: 0 16px 48px rgba(0, 0, 0, 0.45);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --container-max: 1280px;
            --container-narrow: 1024px;
            --nav-height: 68px;
            --bottom-nav-height: 60px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 20% 15%, rgba(166, 108, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 60%, rgba(196, 240, 0, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 85%, rgba(166, 108, 255, 0.05) 0%, transparent 50%);
            background-attachment: fixed;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            opacity: 0.03;
            background-image:
                repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(196, 240, 0, 0.5) 2px, rgba(196, 240, 0, 0.5) 2.5px),
                repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(166, 108, 255, 0.4) 2px, rgba(166, 108, 255, 0.4) 2.5px);
            background-size: 48px 48px;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        :focus-visible {
            outline: 2px solid var(--accent-violet);
            outline-offset: 3px;
            border-radius: 4px;
        }

        @keyframes floatUpDown {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-14px);
            }
        }
        @keyframes floatSlow {
            0%,
            100% {
                transform: translateY(0) rotate(0deg);
            }
            33% {
                transform: translateY(-8px) rotate(1deg);
            }
            66% {
                transform: translateY(4px) rotate(-0.5deg);
            }
        }
        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(196, 240, 0, 0.3), 0 0 40px rgba(196, 240, 0, 0.08);
            }
            50% {
                box-shadow: 0 0 34px rgba(196, 240, 0, 0.5), 0 0 60px rgba(196, 240, 0, 0.18);
            }
        }
        @keyframes shimmer {
            0% {
                background-position: -200% center;
            }
            100% {
                background-position: 200% center;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @keyframes countPulse {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.06);
            }
        }

        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth), backdrop-filter var(--transition-smooth);
            background: transparent;
            backdrop-filter: blur(0px);
            -webkit-backdrop-filter: blur(0px);
        }
        .nav.scrolled {
            background: rgba(11, 12, 30, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 1px 0 rgba(166, 108, 255, 0.2), 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 900;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, var(--accent-lime) 0%, var(--accent-violet) 55%, var(--accent-lime) 100%);
            background-size: 180% auto;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
            animation: shimmer 3.5s ease-in-out infinite;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-lime);
            box-shadow: 0 0 12px var(--accent-lime);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: 22px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
            position: relative;
        }
        .nav-link:hover,
        .nav-link:focus-visible {
            color: var(--text-primary);
            background: rgba(166, 108, 255, 0.1);
        }
        .nav-link:active {
            transform: scale(0.96);
        }
        .nav-cta-btn {
            padding: 9px 22px;
            border-radius: 22px;
            font-weight: 600;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-violet));
            color: #0B0C1E;
            letter-spacing: 0.4px;
            transition: all var(--transition-bounce);
            box-shadow: 0 4px 16px rgba(196, 240, 0, 0.25);
        }
        .nav-cta-btn:hover {
            box-shadow: 0 6px 28px rgba(196, 240, 0, 0.45);
            transform: translateY(-2px);
        }
        .nav-cta-btn:active {
            transform: scale(0.94);
        }

        .bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--bottom-nav-height);
            background: rgba(22, 26, 46, 0.94);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-subtle);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
            padding: 0 8px;
        }
        .bottom-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 500px;
            margin: 0 auto;
        }
        .bottom-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            padding: 6px 10px;
            border-radius: 16px;
            color: var(--text-secondary);
            font-size: 0.68rem;
            font-weight: 500;
            transition: all var(--transition-smooth);
            min-width: 48px;
            text-align: center;
        }
        .bottom-nav-item i {
            font-size: 1.15rem;
            transition: color var(--transition-smooth);
        }
        .bottom-nav-item:hover,
        .bottom-nav-item:active {
            color: var(--accent-lime);
        }
        .bottom-nav-item:active {
            transform: scale(0.9);
        }

        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            overflow: hidden;
            isolation: isolate;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.28;
            mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at 30% 40%, transparent 30%, rgba(11, 12, 30, 0.85) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding-top: 20px;
            padding-bottom: 40px;
        }
        .hero-left {
            animation: fadeInUp 0.8s ease-out;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(166, 108, 255, 0.15);
            border: 1px solid var(--border-subtle);
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-violet);
            letter-spacing: 0.6px;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
            color: var(--text-primary);
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-lime) 0%, var(--accent-violet) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
        }
        .hero-subtitle {
            font-size: 1.18rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 460px;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.4px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-violet));
            color: #0B0C1E;
            box-shadow: 0 6px 24px rgba(196, 240, 0, 0.28);
            transition: all var(--transition-bounce);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 10px 36px rgba(196, 240, 0, 0.5);
            transform: translateY(-3px);
        }
        .btn-primary:active {
            transform: scale(0.93);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.4px;
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .btn-ghost:hover {
            background: rgba(166, 108, 255, 0.1);
            border-color: var(--accent-violet);
            box-shadow: 0 0 20px rgba(166, 108, 255, 0.2);
        }
        .btn-ghost:active {
            transform: scale(0.95);
        }
        .hero-right {
            display: flex;
            flex-direction: column;
            gap: 18px;
            align-items: flex-end;
        }
        .data-badge {
            background: var(--bg-card);
            border: 1.5px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 16px 22px;
            display: flex;
            align-items: center;
            gap: 14px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            animation: floatSlow 5s ease-in-out infinite;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .data-badge:nth-child(2) {
            animation-delay: 1.2s;
            margin-right: 30px;
        }
        .data-badge:nth-child(3) {
            animation-delay: 2.4s;
            margin-right: 10px;
        }
        .data-badge:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-glow-lime);
            transform: translateY(-4px);
        }
        .data-badge-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(196, 240, 0, 0.12);
            color: var(--accent-lime);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .data-badge-value {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-lime);
            letter-spacing: -0.5px;
            line-height: 1;
            animation: countPulse 2.8s ease-in-out infinite;
        }
        .data-badge-label {
            font-size: 0.78rem;
            color: var(--text-secondary);
            letter-spacing: 0.3px;
            line-height: 1.3;
        }

        .section {
            padding: 80px 0;
            position: relative;
            z-index: 1;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-prefix {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--accent-violet);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 900;
            letter-spacing: -0.4px;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .section-header h2 .num-highlight {
            color: var(--accent-lime);
            font-weight: 900;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-top: 12px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .advantages-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 1.1fr 0.8fr;
            grid-template-rows: auto auto;
            gap: 18px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .adv-card {
            background: var(--bg-card);
            border: 1.5px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 28px 26px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .adv-card::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(196, 240, 0, 0.04);
            transition: all var(--transition-smooth);
            pointer-events: none;
        }
        .adv-card:hover::before {
            width: 140px;
            height: 140px;
            top: -50px;
            right: -50px;
            background: rgba(196, 240, 0, 0.08);
        }
        .adv-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-glow-lime);
            transform: translateY(-6px);
        }
        .adv-card:nth-child(1) {
            grid-column: 1 / 3;
            grid-row: 1;
        }
        .adv-card:nth-child(2) {
            grid-column: 3 / 5;
            grid-row: 1;
        }
        .adv-card:nth-child(3) {
            grid-column: 1 / 2;
            grid-row: 2;
        }
        .adv-card:nth-child(4) {
            grid-column: 2 / 5;
            grid-row: 2;
        }
        .adv-card-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-lime);
            letter-spacing: -1px;
            line-height: 1;
        }
        .adv-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.2px;
        }
        .adv-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        .adv-card-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(166, 108, 255, 0.15);
            color: var(--accent-violet);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .services-list {
            display: flex;
            flex-direction: column;
            gap: 32px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .service-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            background: var(--bg-card);
            border: 1.5px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .service-card:hover {
            border-color: var(--accent-violet);
            box-shadow: var(--shadow-glow-violet);
            transform: translateY(-4px);
        }
        .service-card.reverse {
            direction: rtl;
        }
        .service-card.reverse .service-card-text {
            direction: ltr;
        }
        .service-card.reverse .service-card-img-wrap {
            direction: ltr;
        }
        .service-card-text {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .service-card-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 14px;
            background: rgba(196, 240, 0, 0.1);
            color: var(--accent-lime);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            width: fit-content;
        }
        .service-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.2px;
        }
        .service-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .service-card-img-wrap {
            height: 100%;
            min-height: 280px;
            position: relative;
            overflow: hidden;
        }
        .service-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover .service-card-img-wrap img {
            transform: scale(1.06);
        }
        .service-card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 55%, rgba(11, 12, 30, 0.7) 100%);
            pointer-events: none;
        }

        .showcase-section {
            background: var(--bg-surface);
            position: relative;
            overflow: hidden;
        }
        .showcase-bg {
            position: absolute;
            inset: 0;
            opacity: 0.06;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            pointer-events: none;
        }
        .showcase-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 16px 24px 30px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-violet) transparent;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .showcase-scroll::-webkit-scrollbar {
            height: 5px;
        }
        .showcase-scroll::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 10px;
        }
        .showcase-scroll::-webkit-scrollbar-thumb {
            background: var(--accent-violet);
            border-radius: 10px;
        }
        .showcase-card {
            flex: 0 0 320px;
            scroll-snap-align: start;
            background: var(--bg-card);
            border: 1.5px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .showcase-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-glow-lime);
            transform: translateY(-6px);
        }
        .showcase-card-img {
            width: 100%;
            height: 160px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-surface);
        }
        .showcase-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .showcase-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .showcase-highlight {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-lime);
            letter-spacing: -0.5px;
        }
        .showcase-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .showcase-fade-right {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 80px;
            background: linear-gradient(to right, transparent, var(--bg-surface));
            pointer-events: none;
            z-index: 2;
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .compare-card {
            background: var(--bg-card);
            border: 2px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 36px 30px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .compare-card.featured {
            border-color: var(--accent-lime);
            border-width: 2.5px;
            box-shadow: var(--shadow-glow-lime);
        }
        .compare-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-elevated);
        }
        .compare-card-top-bar {
            height: 4px;
            border-radius: 2px;
            margin-bottom: 20px;
            width: 60px;
        }
        .compare-card.featured .compare-card-top-bar {
            background: var(--accent-lime);
            box-shadow: 0 0 16px rgba(196, 240, 0, 0.5);
            width: 80px;
        }
        .compare-card:not(.featured) .compare-card-top-bar {
            background: var(--text-muted);
        }
        .compare-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .compare-card .compare-price {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-lime);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .compare-features {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .compare-feature {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text-secondary);
        }
        .compare-feature .check {
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 1.1rem;
        }
        .compare-feature .dash {
            color: var(--text-muted);
            font-weight: 400;
            font-size: 1rem;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1.5px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .faq-item:hover {
            border-color: rgba(166, 108, 255, 0.4);
        }
        .faq-item.active {
            border-color: var(--accent-violet);
            box-shadow: var(--shadow-glow-violet);
            background: #1a1e36;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: all var(--transition-smooth);
            text-align: left;
            gap: 12px;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(166, 108, 255, 0.15);
            color: var(--accent-violet);
            font-weight: 700;
            transition: all var(--transition-smooth);
            font-size: 1rem;
        }
        .faq-item.active .faq-icon {
            background: rgba(196, 240, 0, 0.2);
            color: var(--accent-lime);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.45s ease;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 220px;
            padding: 0 22px 18px;
        }

        .cta-section {
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.2;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg, rgba(11, 12, 30, 0.7) 0%, rgba(22, 26, 46, 0.9) 50%, rgba(11, 12, 30, 0.95) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 24px;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-big-number {
            font-size: 7rem;
            font-weight: 900;
            letter-spacing: -3px;
            color: var(--accent-lime);
            line-height: 1;
            text-shadow: 0 0 60px rgba(196, 240, 0, 0.5), 0 0 120px rgba(196, 240, 0, 0.2);
            animation: pulseGlow 3s ease-in-out infinite;
            margin-bottom: 10px;
        }
        .cta-label {
            font-size: 1.1rem;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 28px;
            letter-spacing: -0.3px;
        }
        .cta-btn-wrap {
            display: flex;
            justify-content: center;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 18px 42px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1.15rem;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-violet));
            color: #0B0C1E;
            box-shadow: 0 8px 36px rgba(196, 240, 0, 0.35), 0 0 60px rgba(196, 240, 0, 0.15);
            transition: all var(--transition-bounce);
            border: none;
            cursor: pointer;
        }
        .btn-cta-large:hover {
            box-shadow: 0 14px 48px rgba(196, 240, 0, 0.55), 0 0 80px rgba(196, 240, 0, 0.3);
            transform: translateY(-4px);
        }
        .btn-cta-large:active {
            transform: scale(0.92);
        }

        .footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: 52px 0 24px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-brand h4 {
            font-size: 1.2rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-violet));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
            margin-bottom: 10px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.6;
        }
        .footer-col h5 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.6px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition-smooth);
        }
        .footer-col a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            max-width: var(--container-max);
            margin: 32px auto 0;
            padding: 20px 24px 0;
            border-top: 1px solid rgba(166, 108, 255, 0.12);
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom .domain {
            color: var(--accent-violet);
        }
        .social-icons {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .social-icons a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(166, 108, 255, 0.1);
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            font-size: 0.9rem;
        }
        .social-icons a:hover {
            background: rgba(196, 240, 0, 0.2);
            color: var(--accent-lime);
            box-shadow: 0 0 14px rgba(196, 240, 0, 0.3);
        }

        @media (max-width: 1280px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            .advantages-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .adv-card:nth-child(1) {
                grid-column: 1/2;
                grid-row: 1;
            }
            .adv-card:nth-child(2) {
                grid-column: 2/3;
                grid-row: 1;
            }
            .adv-card:nth-child(3) {
                grid-column: 1/2;
                grid-row: 2;
            }
            .adv-card:nth-child(4) {
                grid-column: 2/3;
                grid-row: 2;
            }
            .cta-big-number {
                font-size: 5.5rem;
            }
        }

        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 36px;
                text-align: center;
            }
            .hero-right {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
                align-items: center;
                gap: 14px;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .data-badge {
                animation: none;
                padding: 12px 16px;
            }
            .data-badge:nth-child(2),
            .data-badge:nth-child(3) {
                margin-right: 0;
            }
            .data-badge-value {
                font-size: 1.5rem;
            }
            .service-card {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .service-card.reverse {
                direction: ltr;
            }
            .service-card-img-wrap {
                min-height: 200px;
                order: -1;
            }
            .service-card-text {
                padding: 22px 24px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-link {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .cta-big-number {
                font-size: 4.5rem;
            }
            .section-header h2 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav {
                height: 52px;
            }
            .nav-inner {
                padding: 0 14px;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .nav-links {
                display: none;
            }
            .nav-cta-btn {
                display: none;
            }
            .bottom-nav {
                display: block;
            }
            body {
                padding-bottom: var(--bottom-nav-height);
            }
            .hero {
                min-height: auto;
                padding-top: 60px;
                padding-bottom: 40px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-right {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            .data-badge {
                width: 100%;
                max-width: 280px;
                justify-content: center;
                padding: 10px 14px;
            }
            .data-badge-value {
                font-size: 1.3rem;
            }
            .data-badge:nth-child(2),
            .data-badge:nth-child(3) {
                margin-right: 0;
            }
            .section {
                padding: 50px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 0 14px;
            }
            .adv-card:nth-child(1),
            .adv-card:nth-child(2),
            .adv-card:nth-child(3),
            .adv-card:nth-child(4) {
                grid-column: 1;
                grid-row: auto;
            }
            .adv-card-number {
                font-size: 2.2rem;
            }
            .services-list {
                padding: 0 14px;
                gap: 20px;
            }
            .service-card-text {
                padding: 16px 18px;
            }
            .service-card h3 {
                font-size: 1.2rem;
            }
            .service-card-img-wrap {
                min-height: 170px;
            }
            .showcase-scroll {
                padding: 10px 14px 24px;
            }
            .showcase-card {
                flex: 0 0 260px;
                padding: 16px;
            }
            .showcase-highlight {
                font-size: 1.5rem;
            }
            .compare-grid {
                padding: 0 14px;
                gap: 16px;
            }
            .compare-card {
                padding: 24px 18px;
            }
            .compare-card h3 {
                font-size: 1.2rem;
            }
            .compare-card .compare-price {
                font-size: 1.6rem;
            }
            .faq-grid {
                padding: 0 14px;
                gap: 10px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.88rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
            .cta-content {
                padding: 50px 18px;
            }
            .cta-big-number {
                font-size: 3.5rem;
            }
            .cta-content h2 {
                font-size: 1.4rem;
            }
            .btn-cta-large {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 0 14px;
            }
            .footer-bottom {
                padding: 16px 14px 0;
            }
            .btn-primary,
            .btn-ghost {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            html {
                scroll-padding-top: 56px;
            }
            .container {
                padding: 0 14px;
            }
            .container-narrow {
                padding: 0 14px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-badge {
                font-size: 0.7rem;
                padding: 4px 10px;
            }
            .cta-big-number {
                font-size: 2.8rem;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .showcase-card {
                flex: 0 0 220px;
            }
            .btn-cta-large {
                padding: 12px 22px;
                font-size: 0.85rem;
                border-radius: 24px;
            }
            .bottom-nav-item {
                font-size: 0.6rem;
                padding: 4px 6px;
                min-width: 36px;
            }
            .bottom-nav-item i {
                font-size: 0.95rem;
            }
        }