:root {
  color-scheme: dark;
  --bg: #0b111b;
  --bg-soft: #101b2a;
  --panel: rgba(255,255,255,.055);
  --panel-strong: rgba(255,255,255,.085);
  --line: rgba(255,255,255,.11);
  --text: #f5f7fb;
  --muted: #aeb9c9;
  --blue: #4b91ff;
  --blue-soft: rgba(75,145,255,.16);
  --orange: #ff9f2f;
  --max: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 78% -12%, rgba(66,122,199,.28), transparent 34rem),
    radial-gradient(circle at -10% 96%, rgba(35,85,150,.18), transparent 32rem),
    linear-gradient(160deg, #0a0f17, #0d1826 58%, #0a111c);
  line-height: 1.62;
}
a { color: inherit; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(9,14,22,.72);
  border-bottom: 1px solid var(--line);
}
.nav { min-height: 72px; display: flex; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 760; letter-spacing: -.02em; }
.brand img { width: 38px; height: 38px; border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.35); }
.nav-links { margin-left: auto; display: flex; gap: 18px; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-links a:hover { color: var(--text); }
.lang-switch { display: inline-flex; padding: 3px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.035); }
.lang-switch button { border: 0; border-radius: 999px; padding: 7px 10px; color: var(--muted); background: transparent; cursor: pointer; font: inherit; font-size: 12px; }
.lang-switch button.active { color: white; background: rgba(75,145,255,.22); }
main { padding: 72px 0 96px; }
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: center; min-height: 530px; }
.eyebrow { color: #90b9ff; font-weight: 700; font-size: 14px; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: 14px 0 22px; font-size: clamp(48px, 7vw, 82px); line-height: 1.03; letter-spacing: -.055em; }
.hero p { max-width: 680px; color: var(--muted); font-size: 20px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 18px; border-radius: 13px; border: 1px solid var(--line); text-decoration: none; background: rgba(255,255,255,.055); font-weight: 680; }
.button.primary { border-color: rgba(75,145,255,.42); background: linear-gradient(180deg, #5799ff, #397ce3); box-shadow: 0 10px 28px rgba(44,112,225,.22); }
.app-card { padding: 30px; border: 1px solid var(--line); border-radius: 30px; background: linear-gradient(160deg, rgba(255,255,255,.075), rgba(255,255,255,.025)); box-shadow: 0 28px 70px rgba(0,0,0,.28); }
.app-card img { width: 116px; height: 116px; border-radius: 27px; display: block; box-shadow: 0 18px 36px rgba(0,0,0,.28); }
.app-card h2 { margin: 24px 0 8px; font-size: 30px; letter-spacing: -.03em; }
.app-card p { font-size: 15px; margin: 0; }
.stat-row { margin-top: 26px; display: grid; gap: 10px; }
.stat { display: flex; justify-content: space-between; padding: 12px 14px; border-radius: 12px; background: rgba(255,255,255,.045); color: var(--muted); font-size: 14px; }
.section { padding: 76px 0 0; }
.section-head { max-width: 720px; margin-bottom: 28px; }
.section h2, .content h1 { font-size: clamp(32px, 4vw, 48px); line-height: 1.1; letter-spacing: -.04em; margin: 0 0 14px; }
.section-head p, .content .lead { color: var(--muted); font-size: 18px; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.card { border: 1px solid var(--line); border-radius: 20px; padding: 25px; background: var(--panel); }
.card .icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--blue-soft); color: #a8c8ff; font-size: 21px; }
.card h3 { margin: 18px 0 8px; letter-spacing: -.02em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.highlight { border-left: 3px solid var(--orange); }
.content { max-width: 820px; }
.content h2 { margin-top: 44px; font-size: 23px; letter-spacing: -.025em; }
.content h3 { margin-top: 30px; font-size: 18px; }
.content p, .content li { color: var(--muted); }
.content ul { padding-left: 22px; }
.notice { margin: 28px 0; padding: 18px 20px; border: 1px solid rgba(75,145,255,.26); border-radius: 16px; background: rgba(75,145,255,.08); color: #caddff; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin: 10px 0 0; color: var(--muted); }
.contact-box { margin-top: 30px; padding: 24px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel-strong); }
.contact-box a { color: #9fc2ff; }
footer { border-top: 1px solid var(--line); color: #7f8b9d; font-size: 13px; }
.footer-inner { min-height: 96px; display: flex; gap: 18px; align-items: center; }
.footer-inner nav { margin-left: auto; display: flex; gap: 16px; }
.footer-inner a { color: #9ba7b8; text-decoration: none; }
[data-lang] { display: none; }
html[data-language="ko"] [data-lang="ko"], html[data-language="en"] [data-lang="en"] { display: block; }
span[data-lang] { display: none; }
html[data-language="ko"] span[data-lang="ko"], html[data-language="en"] span[data-lang="en"] { display: inline; }
@media (max-width: 820px) {
  .nav-links > a { display: none; }
  main { padding-top: 40px; }
  .hero { grid-template-columns: 1fr; gap: 36px; min-height: 0; }
  .grid { grid-template-columns: 1fr; }
  h1 { font-size: 50px; }
  .footer-inner { align-items: flex-start; flex-direction: column; padding: 26px 0; }
  .footer-inner nav { margin-left: 0; }
}