:root {
  --bg: #07101f;
  --surface: #0b1730;
  --surface-2: #0e1c37;
  --line: #2d4265;
  --text: #f7f9ff;
  --muted: #b9c5d9;
  --cyan: #58dce9;
  --blue: #7188ff;
  --violet: #ac83ff;
  --amber: #ffc873;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(circle at 88% 2%, rgba(111, 105, 255, .15), transparent 29%), var(--bg);
  color: var(--text);
  font: 17px/1.55 "Segoe UI Variable Display", "Segoe UI", Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: inherit; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: 8px;
  background: #fff;
  color: #07101f;
  font-weight: 700;
}
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }

.top {
  position: sticky;
  z-index: 20;
  top: 0;
  background: rgba(7, 16, 31, .93);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  backdrop-filter: blur(16px);
}
.top-nav { min-height: 82px; display: flex; align-items: center; gap: 22px; }
.logo { display: block; width: 174px; height: auto; }
.search-area { position: relative; flex: 1; max-width: 440px; }
.nav-search {
  display: flex;
  padding: 5px;
  border: 1px solid #3b557d;
  border-radius: 12px;
  background: rgba(11, 24, 48, .94);
}
.nav-search:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(113, 136, 255, .13); }
.nav-search input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  padding: 10px 12px;
  background: transparent;
  color: #fff;
  font: inherit;
  font-size: 14px;
}
.nav-search input::placeholder { color: #94a3bd; }
.nav-search button,
.action {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: linear-gradient(135deg, #607cff, #9270ff);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}
.search-results {
  position: absolute;
  z-index: 30;
  top: calc(100% + 8px);
  right: 0;
  left: 0;
  padding: 7px;
  border: 1px solid #40577e;
  border-radius: 13px;
  background: #081326;
  box-shadow: 0 20px 55px rgba(0, 0, 0, .45);
}
.search-result {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border: 0;
  border-radius: 9px;
  padding: 11px 12px;
  background: transparent;
  color: #fff;
  text-align: left;
  cursor: pointer;
}
.search-result:hover,
.search-result:focus-visible { background: #132647; }
.result-main strong,
.result-main span { display: block; }
.result-main span { margin-top: 2px; color: #9ba9bf; font-size: 12px; }
.result-state {
  flex: 0 0 auto;
  border: 1px solid #37636c;
  border-radius: 99px;
  padding: 4px 7px;
  color: #70e0e9;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}
.result-state.soon { border-color: #584f88; color: #c0b0ff; }
.search-empty { margin: 0; padding: 12px; color: #aab6ca; font-size: 13px; }
.section-nav { display: flex; margin-left: auto; gap: 15px; }
.section-nav a { color: #d1d9e8; font-size: 14px; text-decoration: none; }
.section-nav a:hover { color: #fff; }
.section-nav .login-link {
  border: 1px solid #455a7d;
  border-radius: 8px;
  padding: 8px 13px;
  color: #f3f5ff;
  font-weight: 700;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 40px;
  text-align: center;
  background: radial-gradient(circle at 50% -20%, rgba(110, 125, 255, .2), transparent 46%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .2;
  pointer-events: none;
  background-image: linear-gradient(rgba(120, 145, 205, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(120, 145, 205, .08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 84%);
}
.hero .wrap { position: relative; }
.breadcrumb { text-align: left; color: #99a7bd; font-size: 13px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; list-style: none; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 7px; color: #65748f; }
.eyebrow {
  display: inline-flex;
  margin-top: 27px;
  border: 1px solid rgba(145, 163, 255, .3);
  border-radius: 99px;
  padding: 7px 11px;
  background: rgba(18, 31, 61, .7);
  color: #aeb9ff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .11em;
  text-transform: uppercase;
}
h1 {
  max-width: 1010px;
  margin: 13px auto 14px;
  font-size: clamp(42px, 5.4vw, 66px);
  line-height: 1.04;
  letter-spacing: -.045em;
  text-wrap: balance;
}
.procedure-acronym { color: #aeb9ff; white-space: nowrap; }
.lead { max-width: 800px; margin: 0 auto; color: var(--muted); font-size: 21px; }
.free-entry {
  display: inline-flex;
  margin-top: 22px;
  border: 1px solid #2e929f;
  border-radius: 99px;
  padding: 9px 13px;
  background: rgba(38, 152, 167, .1);
  color: #d3fbff;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}
.free-entry::before { content: "✓"; margin-right: 8px; color: var(--cyan); }

.section { padding: 45px 0; border-top: 1px solid rgba(255, 255, 255, .07); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 22px; }
.section-head .eyebrow { margin-top: 0; }
.section-head h2 { margin: 7px 0 0; font-size: clamp(32px, 4vw, 42px); line-height: 1.1; letter-spacing: -.025em; }
.section-head p { max-width: 520px; margin: 0; color: var(--muted); }
.orientation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.info-card,
.approach,
.phase,
.fact,
.signal,
.source-link,
.tier-preview {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(16, 31, 60, .96), rgba(10, 22, 43, .94));
}
.info-card { padding: 25px; border-radius: 17px; }
.kicker { display: block; margin-bottom: 10px; color: #a8b4ff; font-size: 11px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.info-card h3 { margin: 0 0 9px; font-size: 24px; line-height: 1.2; }
.info-card p { margin: 0; color: var(--muted); }
.subhead { margin: 28px 0 13px; font-size: 21px; }
.approaches { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.approach { border-radius: 14px; padding: 19px; }
.approach strong { display: block; margin-bottom: 5px; font-size: 18px; }
.approach span { color: var(--muted); font-size: 15px; }

.procedure-visual { max-width: 980px; margin: 0 auto; overflow: hidden; border: 1px solid #354a70; border-radius: 19px; background: #09162b; }
.procedure-visual img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.procedure-visual figcaption { display: flex; justify-content: space-between; gap: 22px; padding: 14px 17px; color: #b2bed1; font-size: 13px; }
.procedure-visual figcaption strong { color: #edf2ff; }
.provenance-note { max-width: 980px; margin: 12px auto 0; color: #9fadc3; font-size: 13px; }

.detail-stack { display: grid; gap: 10px; margin-top: 20px; }
.detail-panel { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #0a172d; }
.detail-panel summary { cursor: pointer; padding: 17px 19px; color: #eef2ff; font-size: 17px; font-weight: 650; }
.detail-panel summary::marker { color: var(--blue); }
.detail-content { padding: 0 19px 19px; }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.phase { border-radius: 0 13px 13px 0; border-left: 3px solid var(--blue); padding: 20px; }
.phase small { color: #a5b2ff; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.phase h3 { margin: 5px 0; font-size: 20px; }
.phase p { margin: 0; color: var(--muted); font-size: 15px; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fact { border-radius: 14px; padding: 20px; }
.fact strong { display: block; margin-bottom: 5px; font-size: 18px; }
.fact span { color: var(--muted); }

.signal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.signal { border-width: 2px; border-radius: 17px; padding: 23px; }
.signal h3 { margin: 0 0 13px; font-size: 20px; text-transform: uppercase; letter-spacing: .08em; }
.signal ul { margin: 0; padding-left: 20px; }
.signal li { margin: 9px 0; }
.common { border-color: #2698a7; background: rgba(38, 152, 167, .09); }
.common h3 { color: var(--cyan); }
.vary { border-color: #536dce; background: rgba(83, 109, 206, .09); }
.vary h3 { color: #b4c0ff; }
.confirm { border-color: #ad7931; background: rgba(173, 121, 49, .09); }
.confirm h3 { color: var(--amber); }

.safety {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  border: 1px solid #8b662e;
  border-radius: 14px;
  padding: 19px;
  background: rgba(173, 121, 49, .1);
}
.safety-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: rgba(255, 200, 115, .16); color: var(--amber); font-weight: 800; }
.safety p { margin: 0; color: #f0dfc4; }
.source-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0; }
.source-point { border: 1px solid var(--line); border-radius: 12px; padding: 15px 17px; background: #0b1730; color: #c7d0df; }
.sources { display: grid; gap: 9px; }
.source-link { display: flex; justify-content: space-between; gap: 20px; border-radius: 12px; padding: 15px 17px; text-decoration: none; }
.source-link:hover { border-color: var(--blue); }
.source-link span { color: #9fadc3; font-size: 13px; }
.review-card { margin-top: 18px; border: 1px solid var(--line); border-radius: 14px; padding: 19px; background: #09162b; }
.review-card dl { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; margin: 0; }
.review-card dt { color: #9fadc3; }
.review-card dd { margin: 0; }
.status-pending { color: var(--amber); font-weight: 650; }
.disclaimer { color: #adb9cc; font-size: 14px; }

.tier-boundary { padding: 20px 0; border-block: 1px solid #34476d; background: #091428; }
.tier-boundary .wrap { display: flex; justify-content: space-between; gap: 20px; }
.tier-boundary strong { color: #81e3eb; }
.tier-boundary span { color: #aeb9d0; font-size: 14px; }
.paid-depth { background: linear-gradient(180deg, rgba(31, 35, 80, .3), rgba(7, 16, 31, 0)); }
.tier-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.tier-preview { border-radius: 17px; border-top: 4px solid var(--blue); padding: 25px; }
.tier-preview.advanced { border-top-color: var(--violet); }
.tier-preview small { color: #aeb9ff; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.tier-preview h3 { margin: 6px 0; font-size: 25px; }
.tier-preview p { margin: 0; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 17px; }
.chip { border: 1px solid var(--line); border-radius: 99px; padding: 6px 9px; color: #ccd5e5; font-size: 13px; }
.development-label { display: inline-flex; margin-top: 18px; border: 1px solid #53658d; border-radius: 9px; padding: 9px 12px; color: #b9c5db; font-size: 13px; }

footer { padding: 28px 0; border-top: 1px solid var(--line); background: #07101f; }
.footer { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.footer img { width: 185px; }
.footer .disclaimer { max-width: 760px; margin: 0; }
.footer-login { flex: 0 0 auto; color: #e7ebf6; font-size: 14px; font-weight: 700; text-decoration: none; }
.footer-login:hover { color: #fff; text-decoration: underline; }

@media (max-width: 1000px) {
  .section-nav { overflow-x: auto; max-width: 42vw; padding-block: 12px; white-space: nowrap; }
}
@media (max-width: 760px) {
  .top-nav { flex-wrap: wrap; padding: 12px 0; }
  .search-area { order: 3; flex-basis: 100%; max-width: none; }
  .section-nav { order: 4; max-width: 100%; flex-basis: 100%; margin: 0; padding: 2px 0 7px; }
  .hero { padding-top: 35px; }
  h1 { font-size: 43px; }
  .procedure-acronym { display: block; margin-top: 6px; }
  .lead { font-size: 19px; }
  .section-head,
  .footer,
  .tier-boundary .wrap { align-items: flex-start; flex-direction: column; gap: 12px; }
  .orientation-grid,
  .approaches,
  .timeline,
  .facts,
  .signal-grid,
  .source-points,
  .tier-grid { grid-template-columns: 1fr; }
  .procedure-visual figcaption,
  .source-link { flex-direction: column; gap: 5px; }
  .review-card dl { grid-template-columns: 1fr; gap: 2px; }
  .review-card dd { margin-bottom: 8px; }
}
@media (max-width: 460px) {
  .wrap { width: min(100% - 28px, var(--max)); }
  body { font-size: 16px; }
  .top-nav { min-height: 0; display: grid; grid-template-columns: 1fr auto; gap: 9px 12px; padding: 9px 0 11px; }
  .logo { width: 128px; }
  .section-nav { order: initial; grid-column: 2; grid-row: 1; width: auto; max-width: none; flex-basis: auto; align-items: center; padding: 0; overflow: visible; }
  .section-nav a:not(.login-link) { display: none; }
  .section-nav .login-link { min-height: 42px; display: inline-flex; align-items: center; padding: 8px 12px; }
  .search-area { order: initial; grid-column: 1 / -1; grid-row: 2; width: 100%; }
  .nav-search { width: 100%; padding: 5px; border-radius: 12px; }
  .nav-search input { min-height: 42px; padding: 9px 10px; font-size: 16px; }
  .nav-search button { min-height: 42px; padding: 8px 13px; }
  .hero { padding: 27px 0 30px; }
  .breadcrumb { display: none; }
  .eyebrow { margin-top: 0; font-size: 10px; }
  h1 { margin-top: 9px; font-size: 36px; line-height: 1.04; letter-spacing: -.035em; }
  .procedure-acronym { margin-top: 7px; }
  .lead { font-size: 17px; line-height: 1.48; }
  .free-entry { margin-top: 18px; padding: 12px 14px; font-size: 13px; }
  .section { padding: 31px 0; }
  .section-head { margin-bottom: 18px; }
  .section-head h2 { font-size: 30px; }
  .section-head p { font-size: 15px; }
  .info-card,
  .signal,
  .tier-preview { padding: 18px; border-radius: 14px; }
  .info-card h3 { font-size: 21px; }
  .approaches, .timeline, .facts, .signal-grid, .source-points, .tier-grid { gap: 9px; }
  .approach, .phase, .fact { padding: 16px; }
  .procedure-visual { border-radius: 14px; }
  .procedure-visual figcaption { padding: 12px 14px; font-size: 12px; }
  .detail-panel summary { padding: 15px 16px; font-size: 16px; }
  .source-card, .review-card { padding: 18px; }
  .tier-boundary { padding: 19px 0; }
  .footer img { width: 150px; }
}
@media (forced-colors: active) {
  h1 { color: CanvasText; }
  .eyebrow,
  .free-entry,
  .signal,
  .info-card,
  .approach,
  .fact { forced-color-adjust: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}