:root {
  --bg: #0b0d12;
  --bg-soft: #111420;
  --surface: #151826;
  --border: #222738;
  --text: #eef1f7;
  --text-dim: #98a0b3;
  --text-soft: #c9cfdc;
  --brand: #7c5cff;
  --brand-2: #00d4ff;
  --accent: #ff5c8a;
  --radius: 14px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--text); text-decoration: none; }
a:hover { opacity: .85; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11,13,18,.72);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; letter-spacing: .5px; font-size: 18px;
}
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 6px 20px rgba(124,92,255,.35);
}
.nav-links { display: flex; gap: 24px; }
.nav-links a { color: var(--text-dim); font-size: 14px; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 9px 16px; border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #0b0d12; font-weight: 700; font-size: 14px;
}
@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 120px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: -20% -10% auto -10%;
  height: 600px;
  background:
    radial-gradient(60% 60% at 20% 30%, rgba(124,92,255,.35), transparent 60%),
    radial-gradient(50% 50% at 80% 20%, rgba(0,212,255,.25), transparent 60%),
    radial-gradient(40% 40% at 60% 80%, rgba(255,92,138,.15), transparent 60%);
  filter: blur(10px);
  z-index: 0;
}
.hero > .container { position: relative; z-index: 1; }
.eyebrow {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.02);
  color: var(--text-soft);
  font-size: 12px; letter-spacing: .4px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.1; margin: 0 0 22px;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: clamp(16px, 1.5vw, 19px);
  color: var(--text-soft);
  max-width: 640px; margin: 0 0 36px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 999px;
  font-weight: 700; font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #0b0d12;
  box-shadow: 0 10px 30px rgba(124,92,255,.35);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--text-dim); }

/* ---------- Sections ---------- */
section.block {
  padding: 88px 0;
  border-top: 1px solid var(--border);
}
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.02em; margin: 0 0 14px;
}
.section-head p { color: var(--text-dim); margin: 0; }

/* ---------- Feature grid ---------- */
.features {
  display: grid; gap: 16px;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 880px) { .features { grid-template-columns: 1fr; } }
.feature {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.feature .icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, rgba(124,92,255,.25), rgba(0,212,255,.15));
  display: grid; place-items: center;
  margin-bottom: 16px; font-size: 20px;
}
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--text-dim); font-size: 14px; }

/* ---------- How-it-works ---------- */
.steps {
  display: grid; gap: 16px;
  grid-template-columns: repeat(3, 1fr);
  counter-reset: step;
}
@media (max-width: 880px) { .steps { grid-template-columns: 1fr; } }
.step {
  position: relative;
  padding: 28px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--brand-2);
  font-size: 13px; letter-spacing: .2em;
}
.step h3 { margin: 10px 0 6px; font-size: 18px; }
.step p { color: var(--text-dim); margin: 0; font-size: 14px; }

/* ---------- Pricing ---------- */
.pricing {
  display: grid; gap: 16px;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 880px) { .pricing { grid-template-columns: 1fr; } }
.price-card {
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.price-card.featured {
  border-color: rgba(124,92,255,.55);
  box-shadow: 0 12px 50px rgba(124,92,255,.18);
  background:
    linear-gradient(180deg, rgba(124,92,255,.06), rgba(0,212,255,.04)),
    var(--surface);
}
.price-card h3 { margin: 0 0 8px; font-size: 16px; color: var(--text-soft); }
.price-card .amt {
  font-size: 36px; font-weight: 800; letter-spacing: -0.02em; margin: 6px 0 16px;
}
.price-card ul {
  margin: 0; padding: 0; list-style: none;
  color: var(--text-dim); font-size: 14px;
}
.price-card li { padding: 6px 0; border-top: 1px dashed var(--border); }
.price-card li:first-child { border-top: 0; }

/* ---------- FAQ ---------- */
.faq-item {
  border-top: 1px solid var(--border);
  padding: 18px 0;
}
.faq-item summary {
  cursor: pointer; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::after { content: "+"; color: var(--text-dim); font-size: 22px; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { color: var(--text-dim); margin: 10px 0 0; }

/* ---------- CTA bottom ---------- */
.cta-bottom {
  padding: 80px 0;
  text-align: center;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(40% 80% at 50% 0%, rgba(124,92,255,.18), transparent 60%),
    var(--bg);
}
.cta-bottom h2 { font-size: clamp(26px, 3vw, 38px); margin: 0 0 10px; }
.cta-bottom p { color: var(--text-dim); margin: 0 0 24px; }

/* ---------- Footer ---------- */
.site-footer {
  background: #07080c;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  padding: 56px 0 32px;
  font-size: 14px;
}
.footer-grid {
  display: grid; gap: 32px;
  grid-template-columns: 2fr 1fr 1fr 1fr;
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 {
  color: var(--text); font-size: 13px; letter-spacing: .1em;
  text-transform: uppercase; margin: 0 0 14px;
}
.footer-grid a { color: var(--text-dim); display: block; padding: 4px 0; }
.footer-grid a:hover { color: var(--text); }
.footer-legal {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 12px; color: #6a7185;
}
.footer-legal strong { color: var(--text-soft); font-weight: 600; }

/* ---------- Policy page ---------- */
.doc {
  max-width: 820px; margin: 0 auto;
  padding: 72px 24px 96px;
}
.doc h1 { font-size: 32px; margin: 0 0 8px; letter-spacing: -0.02em; }
.doc .meta { color: var(--text-dim); font-size: 13px; margin-bottom: 40px; }
.doc h2 {
  margin: 40px 0 10px; font-size: 20px;
  padding-top: 28px; border-top: 1px solid var(--border);
}
.doc h3 { margin: 24px 0 8px; font-size: 16px; color: var(--text-soft); }
.doc p, .doc li { color: var(--text-soft); }
.doc ul, .doc ol { padding-left: 22px; }
.doc table {
  width: 100%; border-collapse: collapse; margin: 12px 0;
  font-size: 14px;
}
.doc th, .doc td {
  border: 1px solid var(--border); padding: 10px 12px; text-align: left;
}
.doc th { background: var(--bg-soft); color: var(--text); }
.doc .back {
  display: inline-block; margin-bottom: 24px;
  color: var(--text-dim); font-size: 13px;
}