:root {
  color-scheme: dark;
  --bg: #070b16;
  --panel: rgba(14, 22, 39, 0.88);
  --line: rgba(105, 226, 243, 0.22);
  --text: #f3f7fb;
  --muted: #aab8c7;
  --cyan: #59e3f2;
  --gold: #ffb84d;
  font-family:
    Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 78% 8%, rgba(27, 176, 207, 0.18), transparent 34rem),
    radial-gradient(circle at 10% 54%, rgba(74, 95, 190, 0.13), transparent 30rem),
    var(--bg);
  color: var(--text);
  line-height: 1.72;
}

a {
  color: var(--cyan);
}

.shell {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
}

header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 22, 0.82);
  backdrop-filter: blur(18px);
}

nav {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: var(--text);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.24em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.hero {
  display: grid;
  min-height: calc(100vh - 69px);
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  align-items: center;
  gap: 34px;
  padding: 68px 0 52px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.24em;
}

h1 {
  margin: 0;
  font-size: clamp(72px, 14vw, 148px);
  font-weight: 950;
  letter-spacing: -0.08em;
  line-height: 0.83;
}

.lead {
  max-width: 640px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2.5vw, 26px);
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 900;
  text-decoration: none;
}

.button.primary {
  border-color: transparent;
  background: var(--cyan);
  color: #041017;
}

.portrait {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 36px;
  background:
    linear-gradient(180deg, transparent 42%, rgba(7, 11, 22, 0.96)),
    url("/media/nari-v1.png") center 16% / cover no-repeat,
    linear-gradient(145deg, #16273d, #080c18);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.45);
}

.portrait-copy {
  position: absolute;
  right: 28px;
  bottom: 28px;
  left: 28px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(6, 12, 24, 0.8);
  backdrop-filter: blur(14px);
}

.portrait-copy strong {
  display: block;
  font-size: 18px;
  letter-spacing: 0.08em;
}

.portrait-copy span {
  color: var(--muted);
  font-size: 14px;
}

main.policy {
  width: min(860px, calc(100% - 36px));
  margin: 0 auto;
  padding: 64px 0 90px;
}

.policy h1 {
  font-size: clamp(44px, 8vw, 76px);
  letter-spacing: -0.05em;
  line-height: 1;
}

.policy .updated {
  margin: 16px 0 36px;
  color: var(--muted);
}

.policy section {
  margin: 22px 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
}

.policy h2 {
  margin: 0 0 12px;
  font-size: 21px;
}

.policy p,
.policy li {
  color: #cad4df;
}

.policy ul,
.policy ol {
  padding-left: 22px;
}

.language-note {
  padding: 14px 18px;
  border-left: 3px solid var(--gold);
  background: rgba(255, 184, 77, 0.08);
  color: #e8d2ad;
}

.danger {
  border-color: rgba(255, 126, 126, 0.36) !important;
}

footer {
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  nav {
    align-items: flex-start;
    padding: 16px 0;
  }

  .nav-links {
    gap: 10px 14px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 48px;
  }

  .portrait {
    min-height: 540px;
  }
}

@media (max-width: 480px) {
  .shell {
    width: min(100% - 24px, 1080px);
  }

  nav {
    display: block;
  }

  .nav-links {
    justify-content: flex-start;
    margin-top: 10px;
  }

  .policy section {
    padding: 20px;
  }
}