:root {
  --bg: #111111;
  --bg-soft: #171717;
  --card: rgba(255,255,255,0.06);
  --text: #f5f5f5;
  --muted: #d1d5db;
  --line: rgba(255,255,255,0.12);
  --gold: #d8b36a;
  --gold-strong: #c89a45;
  --shadow: 0 16px 48px rgba(0,0,0,0.28);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(to bottom, rgba(0,0,0,0.30), rgba(0,0,0,0.65)),
    url("./assets/hero.png") center 42% / cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(216,179,106,0.18), transparent 28%),
    linear-gradient(180deg, rgba(17,17,17,0.05), rgba(17,17,17,0.45));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 96px 0 72px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.1;
  font-weight: 800;
}

.subtitle {
  margin-top: 20px;
  max-width: 640px;
  color: #e5e7eb;
  font-size: clamp(16px, 2vw, 20px);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.cta-row.center {
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 168px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.96;
}

.btn.primary {
  background: var(--gold-strong);
  color: #111111;
}

.btn.secondary {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  color: var(--text);
}

.section {
  padding: 72px 0;
}

.section h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
}

.intro p,
.download p {
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.features {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

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

.download {
  text-align: center;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  background: #0d0d0d;
}

.footer-inner {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  color: #cfcfcf;
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: #dddddd;
}

@media (max-width: 760px) {
  .hero {
    min-height: 72vh;
    background-position: center 38%;
  }

  .hero-content {
    padding: 84px 0 56px;
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}