:root {
  --navy: #0d2577;
  --teal: #00bfa6;
  --teal-dark: #009e8a;
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #5b6475;
  --line: #e3e7ef;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --ok: #059669;
  --ok-bg: #ecfdf5;
  --focus: rgba(0, 191, 166, 0.35);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --card: #111a2e;
    --text: #e8edf7;
    --muted: #9aa6bd;
    --line: #22304d;
    --danger: #f87171;
    --danger-bg: #2a1215;
    --ok: #34d399;
    --ok-bg: #0f2a22;
    color-scheme: dark;
  }
  .logo-light { display: none !important; }
  .logo-dark { display: block !important; }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a { color: var(--teal-dark); }
@media (prefers-color-scheme: dark) { a { color: var(--teal); } }

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-header img { height: 34px; width: auto; display: block; }
.site-header .logo-dark { display: none; }

.site-header nav { display: flex; gap: 18px; font-size: 15px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.site-header nav a:hover, .site-header nav a[aria-current="page"] { color: var(--text); }

main { max-width: 920px; margin: 0 auto; padding: 32px 20px 64px; }

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #12358f 55%, var(--teal) 140%);
  color: #fff;
  border-radius: 24px;
  padding: 36px 32px;
  margin-bottom: 28px;
}
.hero h1 { margin: 0 0 8px; font-size: 30px; line-height: 1.25; }
.hero p { margin: 0; color: rgba(255, 255, 255, 0.85); }
.hero .meta { margin-top: 14px; font-size: 14px; color: rgba(255, 255, 255, 0.75); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 32px;
}

.layout { display: grid; grid-template-columns: 240px 1fr; gap: 24px; align-items: start; }

.toc {
  position: sticky;
  top: 84px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 14px;
  font-size: 13.5px;
  max-height: calc(100vh - 110px);
  overflow: auto;
}
.toc strong { display: block; padding: 0 6px 8px; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc a { display: block; padding: 5px 6px; border-radius: 8px; color: var(--muted); text-decoration: none; line-height: 1.35; }
.toc a:hover { background: var(--bg); color: var(--text); }

.policy h2 { font-size: 21px; margin: 36px 0 10px; padding-top: 8px; scroll-margin-top: 84px; color: var(--text); }
.policy h2:first-child { margin-top: 0; }
.policy h3 { font-size: 17px; margin: 22px 0 6px; scroll-margin-top: 84px; }
.policy p { margin: 0 0 12px; }
.policy ul, .policy ol { margin: 0 0 14px; padding-left: 22px; }
.policy li { margin: 4px 0; }

table.info { width: 100%; border-collapse: collapse; margin: 6px 0 16px; font-size: 15px; }
table.info th, table.info td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.info th { width: 42%; color: var(--muted); font-weight: 600; }

.callout {
  border-left: 4px solid var(--teal);
  background: var(--bg);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 12px 0 16px;
}

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.tile {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 24px;
  text-decoration: none;
  color: var(--text);
  display: block;
}
.tile:hover { border-color: var(--teal); }
.tile h2 { margin: 0 0 4px; font-size: 18px; }
.tile p { margin: 0; color: var(--muted); font-size: 15px; }

form .field { margin-bottom: 16px; }
form label { display: block; font-weight: 600; font-size: 14.5px; margin-bottom: 6px; }
form input[type="text"], form input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
}
form input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px var(--focus); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; margin: 4px 0 18px; }
.check input { margin-top: 4px; width: 18px; height: 18px; flex-shrink: 0; accent-color: var(--danger); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 12px;
  padding: 13px 20px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}
.btn-danger { background: var(--danger); color: #fff; width: 100%; }
.btn-danger:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }

.alert { border-radius: 12px; padding: 12px 14px; margin-bottom: 16px; font-size: 15px; display: none; }
.alert.show { display: block; }
.alert.error { background: var(--danger-bg); color: var(--danger); }
.alert.success { background: var(--ok-bg); color: var(--ok); }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 0 8px; }
.steps li { counter-increment: s; position: relative; padding-left: 38px; margin: 10px 0; }
.steps li::before {
  content: counter(s);
  position: absolute; left: 0; top: 1px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--navy); color: #fff; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
@media (prefers-color-scheme: dark) { .steps li::before { background: var(--teal); color: #04221d; } }

dialog {
  border: 0;
  border-radius: 20px;
  padding: 26px;
  max-width: 420px;
  width: calc(100% - 32px);
  background: var(--card);
  color: var(--text);
}
dialog::backdrop { background: rgba(5, 10, 25, 0.55); }
dialog h3 { margin: 0 0 8px; font-size: 19px; }
dialog p { margin: 0 0 18px; color: var(--muted); }
dialog .actions { display: flex; gap: 10px; }
dialog .actions .btn { flex: 1; }

footer.site-footer { text-align: center; color: var(--muted); font-size: 13.5px; padding: 0 20px 40px; }
footer.site-footer a { color: var(--muted); }

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .toc { position: static; max-height: none; }
  .grid2 { grid-template-columns: 1fr; }
  .card { padding: 22px 18px; }
  .hero { padding: 28px 22px; border-radius: 20px; }
  .hero h1 { font-size: 25px; }
  .site-header nav { gap: 12px; font-size: 14px; }
  table.info th { width: 45%; }
}