/* roulang page: index */
:root {
            --bg-primary: #0a0a14;
            --bg-secondary: #0f0f1c;
            --bg-card: #12121f;
            --bg-card-hover: #18182a;
            --bg-nav: rgba(10, 10, 20, 0.88);
            --border-subtle: #1a1a30;
            --border-glow: #00e5ff33;
            --neon-cyan: #00e5ff;
            --neon-cyan-dim: #00b8d4;
            --neon-purple: #8b00ff;
            --neon-purple-light: #a855f7;
            --neon-magenta: #ff0080;
            --neon-green: #00ff88;
            --text-primary: #e8e8f0;
            --text-secondary: #b0b0c8;
            --text-weak: #7878a0;
            --text-white: #f8f8ff;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.45);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
            --shadow-glow-cyan: 0 0 20px rgba(0, 229, 255, 0.25), 0 0 60px rgba(0, 229, 255, 0.08);
            --shadow-glow-purple: 0 0 20px rgba(139, 0, 255, 0.25), 0 0 60px rgba(139, 0, 255, 0.08);
            --shadow-glow-magenta: 0 0 20px rgba(255, 0, 128, 0.25), 0 0 60px rgba(255, 0, 128, 0.08);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', 'Menlo', monospace;
            --nav-height: 68px;
            --max-width: 1200px;
            --section-gap: 5rem;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-normal);
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
            border-bottom-color: var(--border-glow);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            height: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: 0.03em;
            color: var(--text-white);
            white-space: nowrap;
            z-index: 1001;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .logo-link:hover {
            color: var(--neon-cyan);
            text-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-glow-cyan);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: inline-block;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.06);
        }

        .nav-links a.nav-cta-btn {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-cyan-dim));
            color: #0a0a14;
            font-weight: 700;
            padding: 0.55rem 1.4rem;
            border-radius: 2rem;
            box-shadow: var(--shadow-glow-cyan);
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
        }

        .nav-links a.nav-cta-btn:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.5), 0 0 70px rgba(0, 229, 255, 0.2);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #00f0ff, #00cce0);
            color: #050510;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            z-index: 1001;
            padding: 0.4rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-toggle:hover {
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding-top: var(--nav-height);
            overflow: hidden;
            background-color: var(--bg-primary);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.35;
            filter: saturate(1.3) brightness(0.7);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at center, transparent 30%, rgba(10, 10, 20, 0.85) 75%, rgba(10, 10, 20, 0.95) 100%);
        }

        .hero-glow-1 {
            position: absolute;
            top: 25%;
            left: 15%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.18) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
            animation: heroGlowPulse 5s ease-in-out infinite;
        }

        .hero-glow-2 {
            position: absolute;
            bottom: 20%;
            right: 10%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 0, 255, 0.16) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
            animation: heroGlowPulse 6s ease-in-out infinite reverse;
        }

        @keyframes heroGlowPulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.7;
            }
            50% {
                transform: scale(1.25);
                opacity: 1;
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 2rem 1.5rem;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.4rem 1.2rem;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 2rem;
            color: var(--neon-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.05em;
            margin-bottom: 1.5rem;
            animation: badgePulse 3s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(0, 229, 255, 0.2);
            }
            50% {
                box-shadow: 0 0 22px rgba(0, 229, 255, 0.45);
            }
        }

        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4rem);
            font-weight: 900;
            letter-spacing: 0.02em;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 1.2rem;
            text-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple-light));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: none;
        }

        .hero-subtitle {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 2.5rem;
            line-height: 1.7;
            letter-spacing: 0.02em;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2rem;
            border-radius: 2.5rem;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            cursor: pointer;
            transition: all var(--transition-normal);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--neon-cyan), #00b8d4);
            color: #0a0a14;
            box-shadow: var(--shadow-glow-cyan);
        }

        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(0, 229, 255, 0.55), 0 0 80px rgba(0, 229, 255, 0.2);
            transform: translateY(-3px);
            background: linear-gradient(135deg, #00f0ff, #00c8e0);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--neon-cyan);
            color: var(--neon-cyan);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.1);
        }

        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            border-color: #00f0ff;
            box-shadow: 0 0 25px rgba(0, 229, 255, 0.35);
            transform: translateY(-3px);
            color: #00f0ff;
        }

        .btn-lg {
            padding: 0.95rem 2.5rem;
            font-size: 1.1rem;
            border-radius: 3rem;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--neon-cyan);
            margin-bottom: 0.8rem;
            padding: 0.25rem 0.9rem;
            background: rgba(0, 229, 255, 0.07);
            border-radius: 2rem;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 2rem 1.6rem;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-magenta));
            opacity: 0;
            transition: opacity var(--transition-normal);
            border-radius: 0 0 3px 3px;
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 229, 255, 0.3);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
        }

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

        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
            background: rgba(0, 229, 255, 0.1);
            color: var(--neon-cyan);
            transition: all var(--transition-normal);
        }

        .feature-card:hover .feature-icon {
            background: rgba(0, 229, 255, 0.18);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.3);
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.6rem;
            letter-spacing: 0.02em;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ========== SERVICES ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .service-card:hover {
            border-color: rgba(139, 0, 255, 0.35);
            box-shadow: var(--shadow-lg), var(--shadow-glow-purple);
            transform: translateY(-6px);
        }

        .service-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }

        .service-card-body {
            padding: 1.6rem;
        }

        .service-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            letter-spacing: 0.02em;
        }

        .service-card-body p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 1rem;
        }

        .service-tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: rgba(139, 0, 255, 0.12);
            color: var(--neon-purple-light);
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            border: 1px solid rgba(139, 0, 255, 0.25);
        }

        /* ========== PROCESS ========== */
        .process-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            counter-reset: process;
        }

        .process-item {
            flex: 1 1 200px;
            max-width: 240px;
            text-align: center;
            position: relative;
            padding: 2rem 1.2rem;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            transition: all var(--transition-normal);
            counter-increment: process;
        }

        .process-item:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-4px);
        }

        .process-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff;
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: var(--shadow-glow-cyan);
            font-family: var(--font-mono);
        }

        .process-item h4 {
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
        }

        .process-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        .process-arrow {
            display: flex;
            align-items: center;
            color: var(--neon-cyan);
            font-size: 1.4rem;
            opacity: 0.6;
            flex-shrink: 0;
            align-self: center;
        }

        /* ========== STATS ========== */
        .stats-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            text-align: center;
        }

        .stat-item {
            padding: 1.5rem;
        }

        .stat-number {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple-light));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            font-family: var(--font-mono);
            line-height: 1.1;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.4rem;
            font-weight: 500;
            letter-spacing: 0.03em;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.25);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.3rem 1.5rem;
            background: none;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
            outline: none;
            width: 100%;
        }

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

        .faq-icon {
            font-size: 1.2rem;
            transition: transform var(--transition-normal);
            color: var(--neon-cyan);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 1.5rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.3rem;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            overflow: hidden;
            background-color: var(--bg-secondary);
            text-align: center;
        }

        .cta-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.22;
            filter: saturate(1.4) brightness(0.6);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 650px;
            margin: 0 auto;
            padding: 3rem 1.5rem;
        }

        .cta-content h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        /* ========== CONTACT ========== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: start;
            max-width: 900px;
            margin: 0 auto;
        }

        .contact-info h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .contact-info p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .contact-methods {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .contact-methods li {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .contact-methods li i {
            color: var(--neon-cyan);
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }

        .contact-form {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 0.85rem 1.1rem;
            background: var(--bg-primary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
            outline: none;
        }

        .contact-form textarea {
            min-height: 120px;
        }

        .btn-submit {
            background: linear-gradient(135deg, var(--neon-cyan), #00b8d4);
            color: #0a0a14;
            font-weight: 700;
            padding: 0.85rem;
            border-radius: 2.5rem;
            font-size: 1rem;
            letter-spacing: 0.03em;
            cursor: pointer;
            box-shadow: var(--shadow-glow-cyan);
            transition: all var(--transition-normal);
            border: none;
            width: 100%;
        }

        .btn-submit:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.5);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #00f0ff, #00cce0);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        .footer-col h4 {
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            font-size: 1rem;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: var(--neon-cyan);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-weak);
            font-size: 0.85rem;
            letter-spacing: 0.03em;
        }

        .footer-bottom span {
            color: var(--neon-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .process-arrow {
                display: none;
            }
            .process-list {
                gap: 1rem;
            }
            .process-item {
                flex: 1 1 160px;
                max-width: 200px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 3.5rem;
                --nav-height: 60px;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: 5rem 1.5rem 2rem;
                gap: 0.5rem;
                transition: right var(--transition-normal);
                box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6);
                z-index: 1000;
                border-left: 1px solid var(--border-subtle);
                overflow-y: auto;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                display: block;
                padding: 0.75rem 1rem;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
            .mobile-toggle {
                display: block;
            }
            .mobile-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.6);
                z-index: 999;
            }
            .mobile-overlay.show {
                display: block;
            }
            .hero-section {
                min-height: 90vh;
            }
            .hero-title {
                font-size: 2rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .process-list {
                flex-direction: column;
                align-items: center;
            }
            .process-item {
                max-width: 100%;
                width: 100%;
                flex: none;
            }
            .process-arrow {
                display: block;
                transform: rotate(90deg);
                font-size: 1.2rem;
            }
            .contact-form {
                padding: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap: 2.5rem;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .btn {
                padding: 0.7rem 1.5rem;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 0.8rem 1.8rem;
                font-size: 0.95rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .nav-links {
                width: 260px;
            }
            .feature-card {
                padding: 1.4rem 1.2rem;
            }
            .service-card-img {
                height: 180px;
            }
        }