:root {
  --bg: #fbfaf7; --surface: #fff; --text: #1f2328; --muted: #6b7280; --line: #e7e5e0;
  --accent: #2f6feb; --accent-soft: rgba(47,111,235,.12); --saved: rgba(250,204,21,.35);
  --radius: 14px; --shadow: 0 18px 50px rgba(15,23,42,.12), 0 2px 8px rgba(15,23,42,.06);
  --ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  --serif: "Iowan Old Style", Charter, Georgia, "Times New Roman", serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15171a; --surface: #1d2024; --text: #e6e6e6; --muted: #9aa0a6; --line: #2c3036;
    --accent: #6ea0ff; --accent-soft: rgba(110,160,255,.18); --saved: rgba(250,204,21,.22); --shadow: 0 18px 50px rgba(0,0,0,.5); }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--ui); line-height: 1.6; word-break: keep-all; overflow-wrap: anywhere; }
a { color: var(--accent); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 800; color: var(--text); text-decoration: none; font-size: 17px; }
.brand-mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: #fff; font-size: 15px; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--text); }
@media (max-width: 720px) { .nav-links a:not(.btn) { display: none; } }

.btn { display: inline-flex; align-items: center; gap: 8px; font: inherit; font-weight: 700; font-size: 15px; text-decoration: none;
  padding: 11px 18px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff !important; }
.btn.small { font-size: 13px; padding: 7px 12px; }

/* Hero */
.hero { padding: 72px 0 48px; display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 48px; } }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 4px 12px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(32px, 5vw, 50px); line-height: 1.15; letter-spacing: -0.03em; margin: 0 0 18px; }
.hero h1 mark { background: var(--saved); color: inherit; border-radius: 6px; padding: 0 6px; }
.hero p.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; }
.disclosure { font-size: 13px; color: var(--muted); margin: 0 0 10px; max-width: 460px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.hero-shot { border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); width: 100%; height: auto; display: block; }

/* Sections */
section.block { padding: 64px 0; border-top: 1px solid var(--line); }
.block h2 { font-size: 30px; letter-spacing: -0.02em; margin: 0 0 8px; }
.block .sub { color: var(--muted); margin: 0 0 32px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.icon { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); margin-bottom: 12px; }
.icon svg { width: 20px; height: 20px; }
.steps { counter-reset: s; display: grid; gap: 12px; }
.steps li { list-style: none; counter-increment: s; display: flex; gap: 14px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.steps li::before { content: counter(s); display: grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800; }
.steps { padding: 0; margin: 0; }
kbd { font-family: var(--ui); font-size: 12px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 0 5px; background: var(--surface); }
details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; }
details p { color: var(--muted); margin: 10px 0 0; }
.privacy-box { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 900px) { .privacy-box { grid-template-columns: 1fr; } }
.final { text-align: center; }
.final .cta { justify-content: center; }
.final .disclosure { margin: 0 auto 10px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0 48px; font-size: 13px; color: var(--muted); }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
.footer a { color: var(--muted); }

/* Legal / document pages */
.doc { max-width: 760px; margin: 0 auto; padding: 48px 24px 96px; }
.doc h1 { font-size: 32px; letter-spacing: -0.02em; margin: 0 0 6px; }
.doc .meta { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.doc h2 { font-size: 20px; margin: 36px 0 10px; }
.doc h3 { font-size: 16px; margin: 22px 0 8px; }
.doc p, .doc li { font-size: 15.5px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 10px 0; }
.doc th, .doc td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.doc th { background: var(--surface); }
.doc .note { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; font-size: 14px; }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
.lang-switch { font-size: 14px; margin-bottom: 18px; }