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

:root {
    --bg-deep: #060d1a;
    --bg-primary: #0b1832;
    --bg-card: #112240;
    --bg-card-alt: #152544;
    --bg-elevated: #1a2d4a;
    --border-subtle: #1e3256;
    --border-accent: #00d4aa;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-teal: #00d4aa;
    --accent-teal-hover: #00e8bb;
    --accent-gold: #f0b90b;
    --accent-blue: #3b82f6;
    --accent-blue-hover: #60a5fa;
    --danger: #ef4444;
    --success: #22c55e;
    --gradient-hero: linear-gradient(135deg, #060d1a 0%, #0b1832 40%, #0d1f3f 70%, #091428 100%);
    --gradient-card: linear-gradient(145deg, #112240 0%, #152544 100%);
    --gradient-accent: linear-gradient(135deg, #00d4aa 0%, #0ea5e9 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent-teal);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-teal-hover);
}

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

.container-narrow {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    text-transform: none;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--gradient-accent);
    color: #060d1a;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.3);
    color: #060d1a;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-teal);
    color: var(--accent-teal);
}

.btn-outline:hover {
    background: rgba(0, 212, 170, 0.08);
    color: var(--accent-teal-hover);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* ---- NAVIGATION ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(6, 13, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0;
    height: 72px;
    display: flex;
    align-items: center;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.nav-logo .logo-icon {
    width: 38px;
    height: 38px;
    background: var(--gradient-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #060d1a;
    font-weight: 800;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 4px 0;
    transition: color 0.2s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-teal);
    transition: width 0.25s ease;
    border-radius: 1px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta .btn {
    padding: 10px 24px;
    font-size: 0.9rem;
}

/* ---- HERO ---- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    color: var(--accent-teal);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 28px;
    letter-spacing: 0.02em;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent-teal);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    color: #ffffff;
}

.hero h1 .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 520px;
}

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

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-illustration {
    width: 100%;
    max-width: 480px;
    position: relative;
}

.system-block {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.system-block::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 22px;
    background: var(--gradient-accent);
    opacity: 0.15;
    z-index: -1;
}

.system-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.system-row:last-child {
    border-bottom: none;
}

.system-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.system-dot.green { background: var(--success); box-shadow: 0 0 10px rgba(34, 197, 94, 0.4); }
.system-dot.blue { background: var(--accent-blue); box-shadow: 0 0 10px rgba(59, 130, 246, 0.4); }
.system-dot.gold { background: var(--accent-gold); box-shadow: 0 0 10px rgba(240, 185, 11, 0.4); }

.system-bar {
    height: 6px;
    border-radius: 3px;
    flex: 1;
    background: var(--bg-card-alt);
    overflow: hidden;
}

.system-bar-fill {
    height: 100%;
    border-radius: 3px;
}

.system-bar-fill.teal { background: var(--accent-teal); width: 88%; }
.system-bar-fill.blue { background: var(--accent-blue); width: 65%; }
.system-bar-fill.gold { background: var(--accent-gold); width: 92%; }

.floating-card {
    position: absolute;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    box-shadow: var(--shadow-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.floating-card strong {
    color: var(--accent-teal);
    font-size: 1.3rem;
    display: block;
}

.floating-card-1 {
    top: -10px;
    right: -20px;
}

.floating-card-2 {
    bottom: -10px;
    left: -30px;
}

/* ---- SECTIONS ---- */
.section {
    padding: 120px 0;
    position: relative;
}

.section-dark {
    background: var(--bg-primary);
}

.section-deeper {
    background: var(--bg-deep);
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-teal);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 2.6rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---- SERVICES GRID ---- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    border-color: var(--border-accent);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 24px;
    font-weight: 700;
}

.service-icon.teal {
    background: rgba(0, 212, 170, 0.12);
    color: var(--accent-teal);
}

.service-icon.blue {
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-blue);
}

.service-icon.gold {
    background: rgba(240, 185, 11, 0.12);
    color: var(--accent-gold);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
}

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

.service-card .service-features {
    list-style: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.service-features li {
    font-size: 0.88rem;
    color: var(--text-muted);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 13px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-teal);
}

/* ---- STATS ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ---- PROCESS ---- */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 60px;
    right: 60px;
    height: 2px;
    background: var(--border-subtle);
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 0 16px;
}

.process-num {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent-teal);
    margin: 0 auto 24px;
    transition: all 0.3s ease;
}

.process-step:hover .process-num {
    border-color: var(--accent-teal);
    box-shadow: 0 0 30px rgba(0, 212, 170, 0.2);
    background: rgba(0, 212, 170, 0.08);
}

.process-step h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

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

/* ---- TECH STACK ---- */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tech-item {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    transition: all 0.25s ease;
}

.tech-item:hover {
    border-color: var(--accent-teal);
    background: rgba(0, 212, 170, 0.04);
}

.tech-item .tech-name {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-top: 12px;
}

.tech-item .tech-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.tech-item .tech-icon-big {
    font-size: 2.4rem;
    line-height: 1;
}

/* ---- CTA SECTION ---- */
.cta-section {
    background: var(--bg-primary);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-section h2 {
    font-size: 2.8rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    position: relative;
    z-index: 1;
}

/* ---- FOOTER ---- */
.footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-subtle);
    padding: 80px 0 40px;
    color: var(--text-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    color: #ffffff;
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 300px;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col ul li a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-subtle);
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--text-muted);
    margin-left: 24px;
}

.footer-bottom a:hover {
    color: var(--accent-teal);
}

/* ---- PAGE HEADER (sub pages) ---- */
.page-header {
    background: var(--gradient-hero);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-teal), transparent);
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ---- CONTENT CARD ---- */
.content-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    margin: 40px 0;
}

.content-card h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-teal);
    margin-bottom: 20px;
    margin-top: 48px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-subtle);
}

.content-card h2:first-child {
    margin-top: 0;
}

.content-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-top: 32px;
    margin-bottom: 12px;
}

.content-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-card ul,
.content-card ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.content-card li {
    margin-bottom: 10px;
    font-size: 0.98rem;
}

.content-card strong {
    color: #ffffff;
    font-weight: 600;
}

.content-card .highlight-box {
    background: rgba(0, 212, 170, 0.06);
    border-left: 3px solid var(--accent-teal);
    padding: 20px 24px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 24px 0;
}

.content-card .highlight-box p {
    margin-bottom: 0;
    color: var(--text-primary);
}

.content-card table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}

.content-card th {
    background: var(--bg-card-alt);
    color: #ffffff;
    font-weight: 600;
    text-align: left;
    padding: 14px 18px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 2px solid var(--border-subtle);
}

.content-card td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.content-card tr:hover td {
    background: rgba(0, 212, 170, 0.02);
}

/* ---- 404 PAGE ---- */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    text-align: center;
    padding: 24px;
}

.error-content {
    max-width: 560px;
}

.error-code {
    font-size: 10rem;
    font-weight: 900;
    line-height: 1;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.06em;
}

.error-content h1 {
    font-size: 2rem;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 12px;
}

.error-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

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

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-visual {
        order: -1;
    }

    .hero h1 {
        font-size: 2.6rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .process-grid::before {
        display: none;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .section {
        padding: 80px 0;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .process-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .content-card {
        padding: 28px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .cta-section h2 {
        font-size: 2rem;
    }
}