:root {
    --color-bg: #0c1220;
    --color-surface: #11182a;
    --color-surface-alt: #0f172a;
    --color-primary: #5dd1ff;
    --color-primary-strong: #2ab5e8;
    --color-secondary: #a5b4fc;
    --color-text: #e7eaf3;
    --color-muted: #b7bfd8;
    --color-border: rgba(255, 255, 255, 0.08);
    --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.35);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.25);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-pill: 999px;
    --font-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1100px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-base);
    background: radial-gradient(circle at 20% 20%, rgba(93, 209, 255, 0.12), transparent 25%),
        radial-gradient(circle at 80% 10%, rgba(165, 180, 252, 0.1), transparent 22%),
        var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

a:hover,
a:focus-visible {
    color: var(--color-primary);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.container {
    width: min(100%, var(--max-width));
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(12, 18, 32, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    gap: var(--space-4);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    letter-spacing: 0.02em;
}

.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15), var(--shadow-card);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: var(--space-4);
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    font-weight: 600;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-pill);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
    background-color: rgba(93, 209, 255, 0.12);
    color: var(--color-primary);
}

.hero {
    padding: var(--space-12) 0 var(--space-10);
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-10);
    align-items: center;
}

.hero-copy h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.2;
    margin: var(--space-3) 0;
}

.hero-copy .lede {
    color: var(--color-muted);
    max-width: 620px;
    margin-bottom: var(--space-6);
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--color-primary);
    font-size: 0.85rem;
    margin: 0 0 var(--space-2) 0;
}

.cta-row {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-card {
    background: linear-gradient(160deg, rgba(17, 24, 42, 0.9), rgba(17, 24, 42, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-8);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.hero-card::after {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(93, 209, 255, 0.35), transparent 55%);
    z-index: 0;
}

.stats {
    position: relative;
    display: grid;
    gap: var(--space-6);
    z-index: 1;
}

.stat-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
}

.stat-label {
    display: block;
    color: var(--color-muted);
    margin-top: var(--space-2);
}

.section {
    padding: var(--space-10) 0;
}

.section.accent {
    background: rgba(17, 24, 42, 0.6);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.section-inner {
    display: grid;
    gap: var(--space-8);
}

.section-heading h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    margin: 0 0 var(--space-3) 0;
}

.section-copy {
    margin: 0;
    color: var(--color-muted);
    max-width: 680px;
}

.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.pill-list span {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.03);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-5);
}

.card {
    background: linear-gradient(180deg, rgba(26, 35, 58, 0.95), rgba(17, 24, 42, 0.95));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card h3 {
    margin-top: 0;
    margin-bottom: var(--space-3);
}

.card p {
    margin: 0;
    color: var(--color-muted);
}

.card:hover,
.card:focus-within {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
    border-color: rgba(93, 209, 255, 0.4);
}

.contact-layout {
    display: grid;
    gap: var(--space-8);
    align-items: start;
}

.contact-form {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    box-shadow: var(--shadow-card);
    display: grid;
    gap: var(--space-4);
}

.field {
    display: grid;
    gap: var(--space-2);
}

.field label {
    font-weight: 600;
}

.field input,
.field textarea {
    width: 100%;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(231, 234, 243, 0.2);
    background: rgba(255, 255, 255, 0.04);
    color: var(--color-text);
    padding: var(--space-3) var(--space-4);
    font: inherit;
}

.field input::placeholder,
.field textarea::placeholder {
    color: rgba(183, 191, 216, 0.8);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-pill);
    font-weight: 700;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.button.primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
    color: #0c1220;
    box-shadow: var(--shadow-soft);
}

.button.primary:hover,
.button.primary:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 14px 40px rgba(93, 209, 255, 0.35);
}

.button.ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.button.ghost:hover,
.button.ghost:focus-visible {
    border-color: rgba(93, 209, 255, 0.4);
    color: var(--color-primary);
}

.site-footer {
    border-top: 1px solid var(--color-border);
    background: rgba(12, 18, 32, 0.95);
    padding: var(--space-6) 0;
    margin-top: var(--space-12);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
    justify-content: space-between;
}

.footer-links {
    display: inline-flex;
    gap: var(--space-4);
}

.footer-links a {
    color: var(--color-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .contact-layout {
        grid-template-columns: 1.1fr 0.9fr;
        gap: var(--space-12);
    }
}

@media (max-width: 640px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .main-nav ul {
        width: 100%;
        justify-content: space-between;
    }

    .site-footer {
        margin-top: var(--space-10);
    }
}