:root {
  color-scheme: dark;
  --ink: #f6f8ff;
  --muted: #aeb8cc;
  --line: rgba(255, 255, 255, 0.13);
  --panel: rgba(13, 24, 49, 0.78);
  --navy: #030a1d;
  --blue: #19d9ff;
  --yellow: #ffdd32;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(25, 217, 255, 0.16), transparent 28rem),
    radial-gradient(circle at 88% 18%, rgba(255, 221, 50, 0.11), transparent 26rem),
    var(--navy);
  font: 16px/1.7 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Noto Sans TC", sans-serif;
}

a { color: var(--blue); text-underline-offset: 0.2em; }

.shell { width: min(980px, calc(100% - 2rem)); margin: 0 auto; }

header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 10, 29, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand { display: flex; align-items: center; gap: 0.75rem; color: var(--ink); text-decoration: none; font-weight: 750; }
.brand img { width: 42px; height: 42px; border-radius: 50%; }
nav { display: flex; flex-wrap: wrap; gap: 1rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current="page"], nav a:hover { color: var(--ink); }

main { padding: 4.5rem 0 5rem; }
.eyebrow { margin: 0 0 0.8rem; color: var(--yellow); font-size: 0.82rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
h1 { max-width: 800px; margin: 0; font-size: clamp(2.2rem, 7vw, 5.2rem); line-height: 1.02; letter-spacing: -0.055em; }
h2 { margin: 0 0 0.8rem; font-size: clamp(1.45rem, 3vw, 2rem); letter-spacing: -0.025em; }
h3 { margin: 2rem 0 0.45rem; font-size: 1.08rem; }
p, li { color: var(--muted); }
.lead { max-width: 720px; margin: 1.5rem 0 0; font-size: 1.12rem; }
.accent { color: var(--blue); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 3rem; }
.card, .policy {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(17, 34, 68, 0.9), var(--panel));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
}
.card { padding: 1.6rem; }
.card p { margin-bottom: 0; }
.policy { padding: clamp(1.4rem, 4vw, 3rem); }
.policy h1 { font-size: clamp(2rem, 5vw, 3.7rem); }
.policy section { padding-top: 1.7rem; border-top: 1px solid var(--line); margin-top: 1.7rem; }
.language-note { margin-top: 2.4rem; padding: 1rem 1.2rem; border-left: 3px solid var(--yellow); background: rgba(255, 221, 50, 0.06); }
.links { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.2rem; }
.button { display: inline-flex; padding: 0.7rem 1rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); text-decoration: none; background: rgba(255,255,255,0.04); }
.button:hover { border-color: var(--blue); }
footer { padding: 2rem 0 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }

@media (max-width: 700px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 0.9rem 0; }
  main { padding-top: 3rem; }
  .grid { grid-template-columns: 1fr; }
}