:root {
  --bg: #07080c;
  --ink: #f3f5f9;
  --muted: #9aa3b5;
  --line: rgba(255, 255, 255, 0.1);
  --red: #e11d2e;
  --gold: #e8b64c;
  --glass: rgba(18, 20, 28, 0.62);
  --font: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius: 22px;
  --max: 960px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(900px 480px at 12% -8%, rgba(225, 29, 46, 0.16), transparent 55%),
    radial-gradient(800px 420px at 100% 0%, rgba(232, 182, 76, 0.08), transparent 50%),
    linear-gradient(180deg, #07080c, #05060a 50%, #090b11);
  line-height: 1.6;
}

.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}
.orb-a { width: 380px; height: 380px; left: -80px; top: 160px; background: rgba(225,29,46,.14); }
.orb-b { width: 340px; height: 340px; right: -60px; bottom: 80px; background: rgba(232,182,76,.1); }
.grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, #000 15%, transparent 72%);
}

.top, main, .footer { position: relative; z-index: 1; }
.top {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 18px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo { height: 40px; width: auto; max-width: 220px; object-fit: contain; }
.nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
}
.nav a:hover { color: #fff; }
.btn-nav {
  padding: 8px 12px !important;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--ink) !important;
}

.glass {
  background: linear-gradient(145deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

main { max-width: var(--max); margin: 0 auto; padding: 12px 18px 64px; }

.hero { padding: 40px 32px; margin-bottom: 40px; }
.eyebrow {
  margin: 0 0 12px;
  color: #ffb4ba;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.hero h1 em {
  font-style: normal;
  color: transparent;
  background: linear-gradient(135deg, #ff6b78, #e8b64c);
  -webkit-background-clip: text;
  background-clip: text;
}
.lead { margin: 0 0 24px; color: var(--muted); font-size: 16px; max-width: 52ch; }
.lead strong { color: #fff; font-weight: 700; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 800;
  font-size: 14px;
  border-radius: 14px;
  padding: 13px 18px;
  border: 0;
  cursor: pointer;
  transition: transform .15s, filter .15s;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.06); }
.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, #e11d2e, #a50f1c);
  box-shadow: 0 12px 28px rgba(225,29,46,.35);
}
.btn.ghost {
  color: var(--ink);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
}
.btn.small { padding: 10px 14px; font-size: 13px; margin-top: 8px; }

.badges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.badges li {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.25);
}

.section { margin-bottom: 48px; }
.section h2 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.02em;
}
.section-sub { margin: 0 0 22px; color: var(--muted); font-size: 15px; }

.steps { display: grid; gap: 16px; }
.step { padding: 24px; }
.step-num {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: #ffb4ba;
  margin-bottom: 8px;
}
.step h3 { margin: 0 0 8px; font-size: 20px; }
.step > p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }

.mini { margin: 0 0 12px; padding-left: 18px; color: var(--ink); font-size: 14px; }
.mini li { margin-bottom: 6px; }
.mini code, .os-card code, .note code, .prompt-box code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--gold);
  background: rgba(0,0,0,.35);
  padding: 2px 7px;
  border-radius: 6px;
}

.os-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}
@media (max-width: 640px) {
  .os-grid { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
  .hero { padding: 28px 20px; }
}
.os-card {
  padding: 14px;
  border-radius: 14px;
  background: rgba(0,0,0,.28);
  border: 1px solid var(--line);
}
.os-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  color: #ffb4ba;
  margin-bottom: 8px;
}
.os-card code { display: block; margin-bottom: 6px; font-size: 13px; }
.hint { margin: 0; font-size: 12px; color: var(--muted); }

.note {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.note a { color: #ffb4ba; }
.note.ok { color: #9be7c0; }
.note strong { color: #fff; }

.two {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 20px;
  padding: 24px;
}
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } }
.two h3 { margin: 0 0 12px; font-size: 16px; }
.big-ol { margin: 0 0 16px; padding-left: 20px; color: var(--muted); font-size: 14px; }
.big-ol li { margin-bottom: 8px; }
.big-ol strong { color: #fff; }

.prompt-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 14px;
  border-radius: 14px;
  background: rgba(0,0,0,.4);
  border: 1px solid rgba(232,182,76,.25);
  margin-bottom: 10px;
}
.prompt-box code { background: transparent; color: #f0c15a; font-size: 14px; padding: 0; }
.prompt-box.secondary { border-color: var(--line); opacity: .95; }
.copy {
  flex-shrink: 0;
  border: 0;
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 800;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  color: #1a1408;
  background: linear-gradient(135deg, #f0c15a, #d49a2a);
}

.side-card {
  padding: 18px;
  border-radius: 16px;
  background: rgba(0,0,0,.28);
  border: 1px solid var(--line);
}
.check-list {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}
.check-list li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-size: 14px;
  color: var(--ink);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #3dd68c;
  font-weight: 900;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 760px) { .result-grid { grid-template-columns: 1fr; } }
.mini-card { padding: 18px; }
.mini-card h3 { margin: 0 0 8px; font-size: 15px; color: #ffb4ba; }
.mini-card p { margin: 0; font-size: 13px; color: var(--muted); }

.faq { padding: 8px 18px 18px; }
.faq details {
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: 12px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq details p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.faq a { color: #ffb4ba; }

.cta {
  text-align: center;
  padding: 36px 24px;
}
.logo-sm { height: 36px; margin-bottom: 12px; }
.cta h2 { margin: 0 0 8px; font-size: 24px; }
.cta p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
.cta .hero-actions { justify-content: center; }

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px 40px;
  color: var(--muted);
  font-size: 12px;
}