:root {
  --primary: #6EE7B7;
  --accent: #7C3AED;
  --bg: #0b0f14;
  --text: #e6e6e6;
  --muted: #9ea7b3;
  --card: #111827;
  --glass: rgba(255,255,255,.08);
  --maxw: 1040px;
}
:root[data-theme="light"] {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --card: #ffffff;
  --glass: rgba(0,0,0,.06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: Inter, Pretendard, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 16px; }
.header-wrap { position: sticky; top: 0; z-index: 20; backdrop-filter: saturate(120%) blur(10px); background: var(--glass); border-bottom: 1px solid rgba(255,255,255,.08); }
.header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; }
.brand { font-weight: 800; font-size: 20px; display: flex; align-items: center; gap: 10px; }
.logo { width: 28px; height: 28px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.tagline { color: var(--muted); font-size: 13px; }
.nav { display: flex; gap: 12px; flex-wrap: wrap; }
.nav a { padding: 8px 10px; border-radius: 8px; }
.nav a.active { background: rgba(255,255,255,.08); }
.lang-switch, .actions { display: flex; gap: 8px; align-items: center; }
.hamburger { display: none; border: 1px solid rgba(255,255,255,.2); padding: 6px 8px; border-radius: 8px; background: transparent; color: var(--text); }
.theme-toggle { border: 1px solid rgba(255,255,255,.2); padding: 6px 10px; border-radius: 8px; background: transparent; color: var(--text); }
@media (max-width: 780px) {
  .nav { display: none; }
  .nav.open { display: flex; flex-direction: column; width: 100%; margin: 10px 0; }
  .hamburger { display: inline-block; }
}
.hero { padding: 80px 0 40px; text-align: center;
  background: radial-gradient(1000px 600px at 50% -200px, rgba(124,58,237,.35), transparent 60%); }
.hero h1 { font-size: clamp(36px, 6vw, 68px); line-height: 1.05; margin: 0 0 12px;
  background: linear-gradient(90deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { color: var(--muted); font-size: clamp(16px, 2.4vw, 20px); }
.cta { display: inline-block; margin-top: 18px; padding: 10px 16px; background: linear-gradient(90deg, var(--primary), var(--accent)); color: #0b0f14; border-radius: 10px; font-weight: 700; }
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
.card { grid-column: span 12; background: var(--card); border: 1px solid rgba(255,255,255,.08); border-radius: 16px; padding: 18px; transition: transform .15s ease, box-shadow .15s ease; }
.card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0,0,0,.25); }
.card h3 { margin: 0 0 6px; }
.meta { color: var(--muted); font-size: 13px; }
.tag { display: inline-block; padding: 4px 8px; border-radius: 999px; font-size: 12px; margin-right: 6px; border: 1px solid rgba(255,255,255,.14); }
@media (min-width: 740px) { .card { grid-column: span 6; } }
@media (min-width: 1060px) { .card { grid-column: span 4; } }
.footer { color: var(--muted); font-size: 14px; padding: 28px 0 42px; border-top: 1px solid rgba(255,255,255,.08); }
.input, input[type="email"], input[type="text"] { width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid rgba(255,255,255,.16); background: transparent; color: var(--text); }
.button { padding: 10px 14px; border-radius: 10px; border: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); color: #0b0f14; font-weight: 700; cursor: pointer; }