:root {
  --bg: #0b0e11;
  --bg-2: #14181f;
  --bg-3: #1c2128;
  --gold: #f0b90b;
  --gold-2: #fcd535;
  --text: #eaecef;
  --text-2: #b7bdc6;
  --text-3: #848e9c;
  --border: #2b313a;
  --green: #0ecb81;
  --red: #f6465d;
  --radius: 14px;
  --max: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-2); }

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

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,14,17,.85);
  backdrop-filter: blur(10px);
  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; font-size:18px; color:var(--text); }
.brand-mark { width:28px; height:28px; border-radius:6px; background:linear-gradient(135deg,var(--gold),var(--gold-2)); color:#0b0e11; display:grid; place-items:center; font-weight:900; }
.nav-links { display:flex; gap:28px; align-items:center; }
.nav-links a { color:var(--text-2); font-weight:500; font-size:15px; }
.nav-links a:hover, .nav-links a.active { color:var(--gold); }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:12px 22px; border-radius:10px; font-weight:700; font-size:15px; border:none; cursor:pointer; transition:transform .15s ease, box-shadow .2s ease, background .2s; }
.btn-primary { background:linear-gradient(135deg,var(--gold),var(--gold-2)); color:#0b0e11; box-shadow:0 6px 24px -8px rgba(240,185,11,.6); }
.btn-primary:hover { transform:translateY(-1px); color:#0b0e11; }
.btn-ghost { background:transparent; color:var(--text); border:1px solid var(--border); }
.btn-ghost:hover { border-color:var(--gold); color:var(--gold); }

/* Hero */
.hero { position:relative; overflow:hidden; padding: 80px 0 100px; border-bottom:1px solid var(--border); }
.hero::before { content:""; position:absolute; inset:0; background:url('/img/hero.jpg') center/cover no-repeat; opacity:.45; z-index:0; }
.hero::after { content:""; position:absolute; inset:0; background: radial-gradient(ellipse at 50% 100%, rgba(240,185,11,.18), transparent 60%), linear-gradient(180deg, rgba(11,14,17,.3) 0%, var(--bg) 100%); z-index:1; }
.hero-inner { position:relative; z-index:2; text-align:center; max-width:860px; margin:0 auto; }
.eyebrow { display:inline-block; padding:6px 14px; border:1px solid var(--gold); border-radius:999px; color:var(--gold); font-size:13px; font-weight:600; letter-spacing:.05em; margin-bottom:24px; }
.hero h1 { font-size: clamp(36px, 6vw, 64px); font-weight:900; line-height:1.1; letter-spacing:-.02em; margin-bottom:20px; background:linear-gradient(180deg,#fff,#c2c8d0); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero p { font-size: clamp(16px,1.6vw,19px); color:var(--text-2); margin-bottom:36px; }
.hero-ctas { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }
.ref-pill { margin-top:32px; display:inline-flex; align-items:center; gap:10px; background:rgba(255,255,255,.04); border:1px solid var(--border); padding:10px 16px; border-radius:999px; font-size:14px; color:var(--text-2); }
.ref-pill strong { color:var(--gold); font-family: "JetBrains Mono", ui-monospace, monospace; }

/* Sections */
section.block { padding: 80px 0; border-bottom:1px solid var(--border); }
.section-head { text-align:center; max-width:720px; margin:0 auto 56px; }
.section-head h2 { font-size: clamp(28px,3.5vw,40px); font-weight:800; letter-spacing:-.02em; margin-bottom:12px; }
.section-head p { color:var(--text-2); font-size:16px; }
.kicker { color:var(--gold); font-size:13px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; margin-bottom:10px; display:block; }

/* Steps */
.steps { display:grid; gap:20px; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); }
.step-card { background:var(--bg-2); border:1px solid var(--border); border-radius:var(--radius); padding:28px; position:relative; transition:transform .2s, border-color .2s; }
.step-card:hover { transform:translateY(-4px); border-color:var(--gold); }
.step-num { font-size:42px; font-weight:900; color:var(--gold); opacity:.4; line-height:1; }
.step-card h3 { font-size:18px; margin:14px 0 8px; }
.step-card p { color:var(--text-2); font-size:14px; }

/* Split */
.split { display:grid; gap:60px; grid-template-columns: 1fr 1fr; align-items:center; }
.split.reverse { direction:rtl; }
.split.reverse > * { direction:ltr; }
.split img { border-radius:var(--radius); border:1px solid var(--border); }
.split h3 { font-size: clamp(24px, 3vw, 32px); font-weight:800; margin-bottom:16px; letter-spacing:-.01em; }
.split p { color:var(--text-2); margin-bottom:14px; }
.split ul { list-style:none; margin-top:18px; }
.split ul li { padding:10px 0 10px 28px; position:relative; color:var(--text-2); border-bottom:1px dashed var(--border); }
.split ul li::before { content:"✓"; position:absolute; left:0; color:var(--gold); font-weight:900; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap:32px; } }

/* Features grid */
.features { display:grid; gap:20px; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); }
.feature { background:linear-gradient(180deg, var(--bg-2), var(--bg-3)); border:1px solid var(--border); border-radius:var(--radius); padding:28px; }
.feature .ico { width:44px; height:44px; border-radius:10px; display:grid; place-items:center; background:rgba(240,185,11,.12); color:var(--gold); margin-bottom:16px; font-size:22px; }
.feature h3 { font-size:17px; margin-bottom:8px; }
.feature p { color:var(--text-2); font-size:14px; }

/* Gallery */
.gallery { display:grid; grid-template-columns: 2fr 1fr 1fr; gap:14px; }
.gallery img { border-radius:var(--radius); border:1px solid var(--border); height:100%; object-fit:cover; }
.gallery .g1 { grid-row: span 2; height:100%; }
@media (max-width: 820px) { .gallery { grid-template-columns:1fr 1fr; } .gallery .g1 { grid-row:auto; } }

/* CTA */
.cta-band { padding: 100px 0; text-align:center; background: radial-gradient(ellipse at center, rgba(240,185,11,.15), transparent 60%), var(--bg-2); border-bottom:1px solid var(--border); }
.cta-band h2 { font-size: clamp(28px,4vw,44px); margin-bottom:14px; font-weight:900; }
.cta-band p { color:var(--text-2); margin-bottom:28px; }
.cta-band .ref-pill { background:rgba(0,0,0,.3); }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { background:var(--bg-2); border:1px solid var(--border); border-radius:var(--radius); padding:18px 22px; margin-bottom:12px; cursor:pointer; }
.faq details[open] { border-color:var(--gold); }
.faq summary { font-weight:700; font-size:16px; list-style:none; display:flex; justify-content:space-between; align-items:center; }
.faq summary::after { content:"+"; color:var(--gold); font-size:22px; font-weight:300; transition:transform .2s; }
.faq details[open] summary::after { content:"−"; }
.faq details p { margin-top:14px; color:var(--text-2); font-size:15px; }

/* Footer */
.site-footer { padding: 40px 0; text-align:center; color:var(--text-3); font-size:14px; }
.site-footer .disclaim { max-width:720px; margin: 0 auto 18px; font-size:12px; opacity:.7; line-height:1.7; }

/* Mobile nav */
@media (max-width: 720px) {
  .nav-links { gap:14px; }
  .nav-links a:not(.btn) { display:none; }
  .hero { padding: 60px 0 70px; }
}