:root {
  color-scheme: dark;
  --ink: #f3f7fb;
  --muted: #9cabbc;
  --muted-strong: #bac6d2;
  --bg: #081321;
  --bg-deep: #06101c;
  --surface: #0e1c2c;
  --surface-soft: #112338;
  --line: #23364a;
  --line-bright: #34506b;
  --accent: #58a6ff;
  --accent-soft: #8ac0ff;
  --accent-wash: rgba(88, 166, 255, 0.12);
  --warning: #f4c777;
  --shell: 1120px;
  --article: 980px;
  --radius: 22px;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 0%, rgba(34, 99, 165, 0.18), transparent 35rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-underline-offset: 0.22em; }
a:hover { color: var(--accent-soft); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 700;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.shell {
  width: min(calc(100% - 3rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid rgba(72, 97, 122, 0.35);
  background: rgba(8, 19, 33, 0.88);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand strong { color: var(--muted); font-weight: 500; }

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid var(--line-bright);
  border-radius: 9px;
  background: linear-gradient(145deg, #163352, #0b1b2d);
  color: var(--accent-soft);
  font-size: 1rem;
  font-weight: 800;
  box-shadow: inset 0 1px rgba(255,255,255,.08);
}

.header-contact,
.page-nav a {
  color: var(--muted-strong);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.page-nav { display: flex; gap: 1.5rem; }
.page-nav a[aria-current="page"] { color: var(--ink); }

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-soft);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  padding-block: clamp(6rem, 14vw, 10rem) clamp(5rem, 10vw, 8rem);
  border-bottom: 1px solid var(--line);
}

.hero h1,
.article-hero h1,
.not-found h1 {
  margin: 0;
  max-width: 840px;
  font-size: clamp(3.4rem, 9vw, 7.4rem);
  line-height: 0.92;
  letter-spacing: -0.065em;
}

.hero h1 span { color: #718399; }

.hero-copy {
  max-width: 650px;
  margin: 2.25rem 0 0 auto;
  color: var(--muted-strong);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.apps-section { padding-block: clamp(5rem, 10vw, 8rem); }

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

.section-heading h2,
.contact-panel h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.section-heading > p {
  max-width: 440px;
  margin: 0;
  color: var(--muted);
}

.app-card {
  position: relative;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
  padding: clamp(2rem, 5vw, 4rem);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(30, 74, 116, .19), transparent 48%),
    var(--surface);
  box-shadow: var(--shadow);
}

.app-card::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(88, 166, 255, .08);
  border-radius: 50%;
  box-shadow: 0 0 0 40px rgba(88,166,255,.025), 0 0 0 90px rgba(88,166,255,.018);
  pointer-events: none;
}

.app-identity,
.app-description { position: relative; z-index: 1; }

.app-identity {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.app-icon,
.mini-app-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid #416b94;
  background: linear-gradient(145deg, #183f66 0%, #0c2239 70%);
  box-shadow: inset 0 1px rgba(255,255,255,.12), 0 16px 35px rgba(0,0,0,.3);
}

.app-icon { width: 100px; height: 100px; border-radius: 24px; }
.mini-app-icon { width: 34px; height: 34px; border-radius: 9px; }

.document-glyph {
  position: relative;
  display: block;
  width: 40%;
  height: 50%;
  border: 2px solid #cce5ff;
  border-radius: 3px;
}

.document-glyph::before,
.document-glyph::after {
  content: "";
  position: absolute;
  left: 22%;
  width: 56%;
  height: 2px;
  border-radius: 2px;
  background: #84bfff;
}

.document-glyph::before { top: 33%; }
.document-glyph::after { top: 61%; }

.app-platform {
  margin: 0 0 0.2rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.app-card h3 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.04em;
}

.app-description > p {
  max-width: 550px;
  margin: 0 0 2rem;
  color: var(--muted-strong);
  font-size: 1.08rem;
}

.card-links,
.not-found-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.primary-link {
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #03101d;
}

.primary-link:hover { background: #85beff; color: #03101d; }

.secondary-link {
  padding: 0.7rem 0.4rem;
  color: var(--muted-strong);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: clamp(5rem, 10vw, 8rem);
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 34, 54, 0.55);
}

.contact-details p { margin-top: 0; }
.contact-details a { color: var(--accent-soft); }

.safety-note {
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.83rem;
}

.footer-inner {
  min-height: 94px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner a { color: var(--muted-strong); }

.article-shell { width: min(calc(100% - 3rem), var(--article)); }

.article-hero {
  position: relative;
  padding-block: clamp(4rem, 10vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.article-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 260px;
  height: 1px;
  background: var(--accent);
}

.article-hero h1 {
  max-width: 780px;
  font-size: clamp(3rem, 8vw, 6rem);
}

.article-hero > p:last-child {
  max-width: 650px;
  margin: 2rem 0 0;
  color: var(--muted-strong);
  font-size: 1.1rem;
}

.back-link {
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 3rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-decoration: none;
}

.app-kicker {
  position: absolute;
  top: clamp(4rem, 10vw, 7rem);
  right: 0;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--muted-strong);
  font-size: 0.86rem;
  font-weight: 650;
}

.article-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: clamp(3rem, 8vw, 6rem);
  align-items: start;
  padding-block: clamp(4rem, 8vw, 7rem);
}

.article-index {
  position: sticky;
  top: 2rem;
}

.article-index > p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.article-index nav { display: grid; gap: 0.7rem; }
.article-index a { color: var(--muted); font-size: 0.83rem; text-decoration: none; }
.article-index a:hover { color: var(--accent-soft); }

.article-content { min-width: 0; }

.content-section {
  padding-bottom: clamp(3.5rem, 8vw, 5.5rem);
  border-bottom: 1px solid var(--line);
}

.content-section + .content-section { padding-top: clamp(3.5rem, 8vw, 5.5rem); }
.content-section:last-child { border-bottom: 0; padding-bottom: 0; }

.section-number {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.content-section h2 {
  margin: 0 0 1.6rem;
  font-size: clamp(1.8rem, 4vw, 2.55rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.content-section h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.content-section p,
.content-section li { color: var(--muted-strong); }
.content-section p { margin: 0 0 1.2rem; }
.content-section p:last-child { margin-bottom: 0; }
.content-section ul { padding-left: 1.3rem; }
.content-section li + li { margin-top: 0.55rem; }

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 1.5rem 0;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.contact-card div { display: grid; }
.contact-card span { color: var(--muted); font-size: 0.85rem; }
.contact-card a { color: var(--accent-soft); font-size: 0.92rem; }

.warning,
.data-boundary,
.short-version {
  margin-top: 1.5rem;
  padding: 1.4rem;
  border-radius: 14px;
}

.warning {
  border: 1px solid rgba(244, 199, 119, .35);
  background: rgba(244, 199, 119, .06);
}

.warning strong { color: var(--warning); }
.warning p { margin: 0.3rem 0 0; font-size: 0.9rem; }

.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  padding: 1.35rem 2.4rem 1.35rem 0;
  cursor: pointer;
  color: var(--ink);
  font-weight: 650;
  list-style-position: outside;
}
.faq-list summary::marker { color: var(--accent); }
.faq-list details p { margin: -0.25rem 0 1.5rem; }

.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem 2rem; }

.next-link {
  margin-top: 2rem !important;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.next-link a { color: var(--accent-soft); font-weight: 650; }

.effective-date {
  display: inline-block;
  margin: 1.5rem 0 0 !important;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line-bright);
  border-radius: 999px;
  color: var(--accent-soft) !important;
  font-size: 0.78rem !important;
  font-weight: 650;
}

.privacy-hero > p:last-child { margin-top: 1.2rem; }
.privacy-layout { grid-template-columns: 210px minmax(0, 1fr); }

.short-version {
  border: 1px solid var(--line-bright);
  background: linear-gradient(145deg, var(--accent-wash), rgba(17,35,56,.7));
}

.short-version h3 { color: var(--accent-soft); }
.short-version ul { margin-bottom: 0; }

.data-boundary {
  border-left: 3px solid var(--accent);
  background: var(--surface-soft);
}

.data-boundary p { margin: 0; }
.legal-note { color: var(--muted) !important; font-size: 0.85rem; }

.not-found {
  display: flex;
  min-height: calc(100vh - 173px);
  flex-direction: column;
  justify-content: center;
  padding-block: 5rem;
}

.error-code {
  position: absolute;
  right: 7vw;
  margin: 0;
  color: rgba(88,166,255,.07);
  font-size: clamp(12rem, 34vw, 30rem);
  font-weight: 800;
  letter-spacing: -0.1em;
  line-height: 1;
  pointer-events: none;
}

.not-found h1 { max-width: 720px; font-size: clamp(3rem, 8vw, 6rem); }
.not-found > p:not(.error-code, .eyebrow) { max-width: 500px; color: var(--muted-strong); font-size: 1.1rem; }
.not-found-actions { margin-top: 1.5rem; }
.footer-bottom { margin-top: auto; }

@media (max-width: 760px) {
  .shell,
  .article-shell { width: min(calc(100% - 2rem), var(--shell)); }
  .header-inner { min-height: 68px; }
  .header-contact { display: none; }
  .hero { padding-top: 5rem; }
  .hero h1 { font-size: clamp(3.15rem, 16vw, 5rem); }
  .hero-copy { margin-left: 0; }
  .section-heading,
  .app-card,
  .contact-panel { grid-template-columns: 1fr; }
  .section-heading { gap: 1.25rem; }
  .app-card { gap: 2rem; }
  .app-icon { width: 78px; height: 78px; border-radius: 19px; }
  .contact-panel { gap: 2rem; }
  .article-hero { padding-top: 3.5rem; }
  .article-hero h1 { font-size: clamp(3rem, 14vw, 4.6rem); }
  .back-link { margin-bottom: 4.5rem; }
  .app-kicker { top: 6.2rem; left: 0; right: auto; }
  .article-layout,
  .privacy-layout { grid-template-columns: 1fr; gap: 3rem; }
  .article-index { position: static; padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
  .article-index nav { grid-template-columns: 1fr 1fr; gap: 0.65rem 1rem; }
  .contact-card { align-items: flex-start; flex-direction: column; }
  .check-list { grid-template-columns: 1fr; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; gap: 0.15rem; }
  .footer-inner p { margin: 0; }
}

@media (max-width: 430px) {
  body { font-size: 15px; }
  .page-nav { gap: 1rem; }
  .page-nav a { font-size: 0.82rem; }
  .card-links,
  .not-found-actions { align-items: stretch; flex-direction: column; }
  .primary-link,
  .secondary-link { width: 100%; }
  .article-index nav { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}