:root {
  --primary:#0f172a;
  --accent:#2563eb;
  --bg:#f8fafc;
  --text:#1f2937;
  --muted:#64748b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }

header {
  background: var(--primary);
  color: #fff;
}

.header-inner {
  max-width: 1200px;
  margin: auto;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
}

.hero {
  background: linear-gradient(135deg,#020617,#0f172a);
  color: #fff;
}

.hero-inner {
  max-width: 1200px;
  margin: auto;
  padding: 90px 24px;
}

.hero h1 {
  font-size: 40px;
  margin-bottom: 12px;
}

.hero p {
  max-width: 720px;
  font-size: 18px;
  color: #e5e7eb;
}

.container {
  max-width: 1200px;
  margin: auto;
  padding: 70px 24px;
}

.section-title {
  font-size: 28px;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--muted);
  max-width: 720px;
  margin-bottom: 40px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  padding: 26px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.card h3 {
  margin-top: 0;
  color: var(--primary);
}

.notice {
  background: #fff7ed;
  border-left: 5px solid #f97316;
  padding: 22px;
  border-radius: 8px;
  font-size: 14px;
}

footer {
  background: #020617;
  color: #94a3b8;
}

.footer-inner {
  max-width: 1200px;
  margin: auto;
  padding: 50px 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap: 30px;
}

footer h4 {
  color: #fff;
  margin-bottom: 12px;
}

footer a {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: #94a3b8;
}

.footer-bottom {
  text-align: center;
  padding: 16px;
  font-size: 13px;
  border-top: 1px solid #1e293b;
}

/* MOBILE OPTIMIZATION */
@media (max-width: 768px) {
  .hero h1 { font-size: 30px; }
  .hero p { font-size: 16px; }
}