:root {
    --color-background: #050b16;
    --color-surface: #0d1626;
    --color-surface-alt: #121e32;
    --color-primary: #4cb5ff;
    --color-primary-soft: rgba(76, 181, 255, 0.16);
    --color-text: #f4f5f7;
    --color-text-muted: #9da9c4;
    --color-border: rgba(255, 255, 255, 0.12);
    --shadow-soft: 0 20px 48px rgba(0, 0, 0, 0.45);
    --radius-lg: 1.5rem;
    --radius-md: 1rem;
    --spacing: clamp(1.5rem, 2vw, 2.5rem);
    --font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family);
    color: var(--color-text);
    background: radial-gradient(circle at 20% 20%, #0f1d34 0%, #050b16 45%, #02050c 100%);
    line-height: 1.7;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover,
a:focus-visible {
    text-decoration: underline;
}

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

.container {
    width: min(92%, 1120px);
    margin: 0 auto;
}

.site-header {
    background: linear-gradient(135deg, rgba(76, 181, 255, 0.12), rgba(21, 33, 53, 0.85));
    padding: clamp(2rem, 8vw, 4.5rem) 0 clamp(4rem, 10vw, 6rem);
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.site-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-text);
}

.site-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.75rem clamp(1.25rem, 4vw, 2rem);
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-links a {
    color: var(--color-text-muted);
    font-weight: 500;
    letter-spacing: 0.01em;
}

.site-links a.active {
    color: var(--color-primary);
    position: relative;
}

.site-links a.active::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.35rem;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    border-radius: 999px;
}

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

.hero {
    display: grid;
    gap: clamp(2rem, 6vw, 4rem);
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    align-items: center;
}

.hero-text {
    display: grid;
    gap: 1.25rem;
}

.hero-kicker {
    margin: 0;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.5rem, 8vw, 4rem);
    line-height: 1.05;
}

.hero-subtitle {
    margin: 0;
    max-width: 48ch;
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    background: var(--color-primary);
    color: #040814;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(76, 181, 255, 0.25);
}

.button-outline {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.hero-figure {
    justify-self: center;
    max-width: 320px;
    padding: 0.85rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, rgba(76, 181, 255, 0.35), rgba(7, 15, 27, 0.9));
    box-shadow: var(--shadow-soft);
}

.hero-figure img {
    border-radius: calc(var(--radius-lg) - 0.85rem);
    width: 100%;
    height: auto;
}

main {
    display: grid;
    gap: clamp(3rem, 8vw, 5.5rem);
    padding: clamp(3rem, 9vw, 6rem) 0;
}

.section {
    position: relative;
}

.section::after {
    content: "";
    position: absolute;
    inset: 1.25rem;
    border-radius: var(--radius-lg);
    background: radial-gradient(circle at top right, rgba(76, 181, 255, 0.12), transparent 55%);
    filter: blur(32px);
    opacity: 0.45;
    z-index: -2;
}

.section-grid {
    display: grid;
    gap: clamp(2rem, 4vw, 3rem);
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    background: var(--color-surface);
    padding: clamp(2rem, 5vw, 3rem);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.section-stack {
    display: grid;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    background: var(--color-surface-alt);
    padding: clamp(2.25rem, 6vw, 3.5rem);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.section-center {
    text-align: center;
    display: grid;
    gap: 1.5rem;
}

.section-content h2,
.section-stack h2,
.section-center h2 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 2.75rem);
}

.section-highlight {
    background: linear-gradient(145deg, rgba(76, 181, 255, 0.08), rgba(5, 16, 30, 0.9));
    padding: clamp(1.75rem, 4vw, 2.5rem);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: grid;
    gap: 1rem;
}

.section-highlight h3 {
    margin: 0;
    font-size: 1.3rem;
}

.card-grid {
    display: grid;
    gap: clamp(1.5rem, 3vw, 2rem);
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
    background: linear-gradient(150deg, rgba(76, 181, 255, 0.1), rgba(9, 18, 30, 0.95));
    border-radius: var(--radius-md);
    padding: clamp(1.75rem, 4vw, 2.25rem);
    border: 1px solid var(--color-border);
    display: grid;
    gap: 0.85rem;
}

.card h3 {
    margin: 0;
    font-size: 1.4rem;
}

.card ul,
.section-content ul {
    padding-left: 1.2rem;
    margin: 0;
    color: var(--color-text-muted);
}

.card li,
.section-content li {
    margin-bottom: 0.5rem;
}

.section-note {
    margin: 0;
    color: var(--color-text-muted);
    font-style: italic;
}

.section-accent {
    background: linear-gradient(160deg, rgba(76, 181, 255, 0.28), rgba(4, 12, 24, 0.95));
    border: 1px solid rgba(76, 181, 255, 0.3);
    box-shadow: var(--shadow-soft);
}

.site-footer {
    padding: 2.5rem 0 3rem;
    background: #03060d;
    color: var(--color-text-muted);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

small {
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}

@media (max-width: 768px) {
    .site-links {
        justify-content: flex-start;
    }

    .hero-figure {
        max-width: 260px;
    }

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

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}