:root {
    color-scheme: dark;
    --bg: #0e0e0f;
    --bg-raised: #16161a;
    --fg: #f5f7ff;
    --muted: #a0a1b2;
    --accent: #6ef3c5;
    --accent-strong: #7cf9de;
    --border: rgba(255,255,255,0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--fg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

main {
    padding: 2.5rem 1.5rem 3rem;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.site-header {
    background: var(--bg-raised);
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    gap: 1rem;
}

.brand {
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--fg);
}

.site-nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--muted);
    font-weight: 500;
    padding-bottom: 0.15rem;
    border-bottom: 2px solid transparent;
}

.nav-link.active {
    color: var(--accent);
    border-color: var(--accent);
}

.hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin: 0 0 1rem;
}

.hero p {
    color: var(--muted);
    margin: 0 auto;
    max-width: 640px;
}

.eyebrow {
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    color: var(--muted);
    margin-bottom: 0.5rem;
    display: block;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.card {
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
    box-shadow: 0 10px 35px rgba(0,0,0,0.45);
    transition: transform 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.22);
}

.card h3 {
    margin: 0;
    font-size: 1.15rem;
}

.card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.card span {
    margin-top: auto;
    font-size: 0.85rem;
    color: var(--accent);
}

.section-heading {
    margin: 3rem 0 1rem;
    font-size: 1.5rem;
}

.site-footer {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--bg-raised);
    color: var(--muted);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.tool-shell {
    background: #070707;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 24px;
    padding: 1.5rem;
    margin-top: 2rem;
}