:root {
    --bg: #0a0a0f;
    --fg: #f5f5f7;
    --muted: #9a9aa8;
    --accent: #6d5efc;
    --accent2: #00d4ff;
    --card: rgba(255, 255, 255, 0.04);
    --border: rgba(255, 255, 255, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Roboto, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    overflow-x: hidden;
}

.bg-gradient {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(60% 50% at 20% 0%, rgba(109, 94, 252, 0.25), transparent 60%),
        radial-gradient(50% 50% at 90% 10%, rgba(0, 212, 255, 0.15), transparent 60%);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 8vw;
    max-width: 1200px;
    margin: 0 auto;
}

.brand {
    font-weight: 800;
    letter-spacing: 2px;
    font-size: 20px;
}
.brand span { color: var(--accent2); }
.brand.small { font-size: 16px; }

.links a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 28px;
    font-size: 15px;
    transition: color .2s;
}
.links a:hover { color: var(--fg); }

.hero {
    max-width: 900px;
    margin: 0 auto;
    padding: 12vh 8vw 10vh;
    text-align: center;
}

.eyebrow {
    color: var(--accent2);
    letter-spacing: 3px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
}

.subtitle {
    color: var(--muted);
    font-size: clamp(1rem, 2vw, 1.2rem);
    max-width: 560px;
    margin: 28px auto 40px;
}

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

.btn {
    padding: 14px 30px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: transform .15s, box-shadow .2s, background .2s;
}
.btn.primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 8px 30px rgba(109, 94, 252, 0.4);
}
.btn.primary:hover { transform: translateY(-2px); }
.btn.ghost {
    border: 1px solid var(--border);
    color: var(--fg);
}
.btn.ghost:hover { background: var(--card); }

.products {
    max-width: 1100px;
    margin: 0 auto;
    padding: 6vh 8vw;
    text-align: center;
}
.products h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin-bottom: 48px;
    letter-spacing: -0.5px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.card {
    display: block;
    text-align: left;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px;
    text-decoration: none;
    color: var(--fg);
    transition: transform .18s, border-color .2s, background .2s;
}
.card:hover {
    transform: translateY(-4px);
    border-color: rgba(109, 94, 252, 0.5);
    background: rgba(255, 255, 255, 0.06);
}
.card h3 { font-size: 1.3rem; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.95rem; }

.footer {
    max-width: 1100px;
    margin: 0 auto;
    padding: 8vh 8vw 6vh;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--muted);
}
.footer .brand { margin-bottom: 16px; }
.footer a { color: var(--accent2); text-decoration: none; }
.footer p { font-size: 0.9rem; margin-top: 4px; }