/* roulang page: index */
:root {
            --bg-deep: #080816;
            --bg-surface: #0f0f24;
            --bg-card: #141430;
            --bg-card-hover: #1a1a3e;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0cc;
            --text-muted: #6b6b8a;
            --accent-neon: #00d4ff;
            --accent-neon-glow: rgba(0, 212, 255, 0.35);
            --accent-purple: #8b5cf6;
            --accent-purple-glow: rgba(139, 92, 246, 0.35);
            --accent-gold: #f5a623;
            --accent-green: #10e873;
            --accent-pink: #ff4da6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 212, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 4px rgba(0, 212, 255, 0.06);
            --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.55), 0 2px 12px rgba(0, 212, 255, 0.14);
            --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.2), 0 0 80px rgba(0, 212, 255, 0.06);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Courier New', monospace;
            --max-width: 1240px;
            --nav-height: 72px;
        }

        *,
        *::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-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-neon);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 3px;
            border-radius: 4px;
        }
        input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 10, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            background: rgba(10, 10, 26, 0.94);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(0, 212, 255, 0.18);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.55rem;
            letter-spacing: 0.02em;
            color: #fff;
            text-decoration: none;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .logo-link:hover {
            color: var(--accent-neon);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            font-weight: 900;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links a {
            display: inline-block;
            padding: 9px 16px;
            border-radius: 22px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
            border-radius: 24px;
        }
        .nav-links a.nav-cta:hover {
            box-shadow: 0 0 28px rgba(0, 212, 255, 0.5);
            transform: translateY(-1px);
            color: #fff;
            background: linear-gradient(135deg, #00e0ff, #9b6dff);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 6px;
            cursor: pointer;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition-fast);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 960px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -320px;
                width: 280px;
                height: 100vh;
                flex-direction: column;
                background: rgba(14, 14, 32, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 100px 28px 40px;
                gap: 2px;
                transition: right var(--transition-smooth);
                box-shadow: -4px 0 40px rgba(0, 0, 0, 0.6);
                border-left: 1px solid var(--border-subtle);
                z-index: 999;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                display: block;
                padding: 12px 18px;
                border-radius: 10px;
                font-size: 1rem;
                width: 100%;
            }
            .hamburger {
                display: flex;
            }
            .mobile-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.5);
                z-index: 998;
            }
            .mobile-overlay.active {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .nav-links {
                width: 260px;
                right: -280px;
            }
            .logo-link {
                font-size: 1.3rem;
                gap: 7px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1.1rem;
                border-radius: 8px;
            }
        }

        /* ===== HERO ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 100px 0 80px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(8, 8, 22, 0.55) 0%, rgba(8, 8, 22, 0.88) 65%, rgba(8, 8, 22, 0.96) 100%);
            z-index: 1;
        }
        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            filter: blur(140px);
            opacity: 0.28;
            z-index: 0;
            pointer-events: none;
        }
        .hero-glow.g1 {
            top: -10%;
            left: 15%;
            background: var(--accent-neon);
        }
        .hero-glow.g2 {
            bottom: -15%;
            right: 10%;
            background: var(--accent-purple);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
        }
        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            font-size: 0.88rem;
            color: var(--accent-neon);
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 22px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            margin-right: 6px;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
            color: #fff;
            text-shadow: 0 0 60px rgba(0, 212, 255, 0.3);
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-neon), #60dfff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin-bottom: 34px;
            line-height: 1.7;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            text-decoration: none;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-neon), #00b8e0);
            color: #000;
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.35);
            border: none;
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 212, 255, 0.55);
            transform: translateY(-2px);
            color: #000;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.35);
            color: #fff;
        }
        .btn-outline:hover {
            border-color: var(--accent-neon);
            color: var(--accent-neon);
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.25);
            transform: translateY(-2px);
        }
        .hero-stats-row {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 2.4rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 24px;
            }
            .hero-stat-num {
                font-size: 1.8rem;
            }
            .hero-section {
                background-attachment: scroll;
                min-height: auto;
                padding: 120px 0 60px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.95rem;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-num {
                font-size: 1.5rem;
            }
        }

        /* ===== SECTIONS ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-neon);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .bg-surface-alt {
            background: var(--bg-surface);
        }

        /* ===== FEATURES ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: var(--accent-neon-glow);
            filter: blur(50px);
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
            z-index: 0;
        }
        .feature-card:hover::before {
            opacity: 0.5;
        }
        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            background: var(--bg-card-hover);
        }
        .feature-card>* {
            position: relative;
            z-index: 1;
        }
        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent-neon);
            transition: all var(--transition-smooth);
        }
        .feature-card:hover .feature-icon {
            background: rgba(0, 212, 255, 0.2);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.25);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 960px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .feature-card {
                padding: 24px 18px;
            }
        }

        /* ===== SERVICES ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }
        .service-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .service-card-body {
            padding: 22px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .service-card-body p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .service-card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent-neon);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }
        .tag.purple {
            background: rgba(139, 92, 246, 0.1);
            color: var(--accent-purple);
            border-color: rgba(139, 92, 246, 0.2);
        }
        .tag.gold {
            background: rgba(245, 166, 35, 0.1);
            color: var(--accent-gold);
            border-color: rgba(245, 166, 35, 0.2);
        }

        @media (max-width: 768px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card-img {
                height: 170px;
            }
        }

        /* ===== PROCESS ===== */
        .process-list {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            counter-reset: process-step;
        }
        .process-step {
            flex: 1;
            min-width: 200px;
            max-width: 260px;
            text-align: center;
            position: relative;
            padding: 28px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }
        .process-step:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }
        .process-step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .process-connector {
            display: flex;
            align-items: center;
            color: var(--accent-neon);
            font-size: 1.3rem;
            opacity: 0.6;
            flex-shrink: 0;
            align-self: center;
        }
        @media (max-width: 900px) {
            .process-list {
                flex-direction: column;
                align-items: center;
            }
            .process-step {
                max-width: 100%;
                width: 100%;
            }
            .process-connector {
                transform: rotate(90deg);
                margin: -8px 0;
            }
        }

        /* ===== STATS / DATA ===== */
        .stats-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }
        .stat-card .stat-value {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, var(--accent-neon), #60dfff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 8px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-card .stat-value {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 420px) {
            .stats-panel {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.15);
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.12);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            text-align: left;
            cursor: pointer;
            border: none;
            gap: 14px;
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--accent-neon);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .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 22px 20px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: rgba(8, 8, 22, 0.85);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: 26px;
            border: 2px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            backdrop-filter: blur(4px);
        }
        .cta-form input::placeholder {
            color: var(--text-muted);
        }
        .cta-form input:focus {
            border-color: var(--accent-neon);
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.2);
            outline: none;
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-form .btn {
            flex-shrink: 0;
        }
        @media (max-width: 520px) {
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
            }
            .cta-form .btn {
                width: 100%;
                justify-content: center;
            }
            .cta-section {
                background-attachment: scroll;
            }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-link {
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-top: 8px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--accent-neon);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== SCROLL TO TOP ===== */
        .scroll-top-btn {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 900;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: #fff;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            transform: translateY(16px);
            pointer-events: none;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .scroll-top-btn.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .scroll-top-btn:hover {
            border-color: var(--accent-neon);
            box-shadow: var(--shadow-glow);
            color: var(--accent-neon);
            transform: translateY(-3px);
        }

        /* ===== ANIMATIONS ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
            opacity: 0;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* badge pulse */
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 212, 255, 0.6);
            }
        }
        .hero-badge {
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

        /* ===== MISC ===== */
        .text-neon {
            color: var(--accent-neon);
        }
        .text-purple {
            color: var(--accent-purple);
        }
        .text-gold {
            color: var(--accent-gold);
        }
        .divider {
            width: 60px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--accent-neon), var(--accent-purple));
            margin: 16px auto;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }