:root {
  color-scheme: light;
}

.subpage {
  min-height: 100vh;
  background: linear-gradient(180deg, #EDF4FF 0, #FFFFFF 360px);
  color: #222326;
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
}

.subpage,
.subpage *,
.subpage *::before,
.subpage *::after {
  box-sizing: border-box;
}

.subnav-wrap {
  padding: 24px;
}

.subnav {
  max-width: 1120px;
  margin: 0 auto;
  min-height: 62px;
  padding: 0 22px;
  border: 1px solid rgba(31,32,37,0.06);
  border-radius: 999px;
  background: rgba(255,255,255,0.88);
  box-shadow: rgba(31,32,37,0.08) 0 12px 40px -18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.sub-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #222326;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
}

.subnav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  font-weight: 500;
}

.subnav-links a {
  color: #5F6166;
  text-decoration: none;
}

.subnav-links a:hover,
.subnav-links a[aria-current="page"] {
  color: #222326;
}

.subpage-main {
  padding: 64px 24px 96px;
}

.subpage-hero {
  max-width: 850px;
  margin: 0 auto 56px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: #415EEE;
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.subpage-hero h1 {
  margin: 20px 0 0;
  font-size: clamp(42px, 7vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.subpage-hero p {
  max-width: 690px;
  margin: 22px auto 0;
  color: #5F6166;
  font-size: 19px;
  line-height: 1.55;
}

.updated {
  display: block;
  margin-top: 16px;
  color: #777A80;
  font-size: 13px;
}

.spec-grid {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.spec-card {
  padding: 30px;
  border: 1px solid #E7EAF1;
  border-radius: 24px;
  background: rgba(255,255,255,0.92);
  box-shadow: rgba(31,32,37,0.08) 0 16px 46px -28px;
}

.spec-number {
  color: #415EEE;
  font-size: 13px;
  font-weight: 700;
}

.spec-card h2 {
  margin: 12px 0 0;
  font-size: 25px;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.spec-card p,
.spec-card li {
  color: #5F6166;
  font-size: 15px;
  line-height: 1.65;
}

.spec-card p {
  margin: 12px 0 0;
}

.spec-card ul {
  margin: 16px 0 0;
  padding-left: 20px;
}

.spec-wide {
  grid-column: 1 / -1;
}

.requirements-list {
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid #E7EAF1;
  border-radius: 28px;
  background: rgba(255,255,255,0.92);
  box-shadow: rgba(31,32,37,0.08) 0 18px 50px -30px;
  overflow: hidden;
}

.requirement-item {
  padding: 30px 34px;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.requirement-item + .requirement-item {
  border-top: 1px solid #EEF1F6;
}

.requirement-number {
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: #415EEE;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.requirement-item h2 {
  margin: 2px 0 0;
  font-size: 23px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.requirement-item p {
  margin: 10px 0 0;
  color: #5F6166;
  font-size: 16px;
  line-height: 1.65;
}

.requirement-item strong {
  color: #33353A;
  font-weight: 600;
}

.architecture {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.architecture span {
  min-height: 76px;
  padding: 16px;
  border-radius: 16px;
  background: #F3F6FC;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #3A3C41;
  font-size: 14px;
  font-weight: 600;
}

.page-callout {
  max-width: 1120px;
  margin: 16px auto 0;
  padding: 26px 30px;
  border-radius: 24px;
  background: #1F2025;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.page-callout h2 {
  margin: 0;
  font-size: 24px;
}

.page-callout p {
  margin: 6px 0 0;
  color: #C9CBD0;
  line-height: 1.5;
}

.page-callout .pill-dark {
  flex: none;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  background: #FFFFFF;
  color: #222326;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 600;
}

.legal-layout {
  max-width: 1040px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 24px;
  padding: 20px;
  border: 1px solid #E7EAF1;
  border-radius: 18px;
  background: rgba(255,255,255,0.9);
}

.legal-toc strong {
  font-size: 13px;
}

.legal-toc a {
  display: block;
  margin-top: 12px;
  color: #6A6C70;
  font-size: 13px;
  line-height: 1.35;
  text-decoration: none;
}

.legal-toc a:hover {
  color: #415EEE;
}

.legal-content {
  padding: 36px 40px;
  border: 1px solid #E7EAF1;
  border-radius: 28px;
  background: #FFFFFF;
  box-shadow: rgba(31,32,37,0.08) 0 18px 50px -30px;
}

.legal-content section + section {
  margin-top: 38px;
  padding-top: 38px;
  border-top: 1px solid #EEF1F6;
}

.legal-content h2 {
  margin: 0;
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.legal-content h3 {
  margin: 24px 0 0;
  font-size: 17px;
}

.legal-content p,
.legal-content li {
  color: #4F5156;
  font-size: 15px;
  line-height: 1.72;
}

.legal-content p {
  margin: 12px 0 0;
}

.legal-content ul,
.legal-content ol {
  margin: 14px 0 0;
  padding-left: 22px;
}

.legal-note {
  margin-bottom: 30px;
  padding: 18px 20px;
  border-left: 4px solid #FFCA00;
  border-radius: 0 14px 14px 0;
  background: #FFF9E8;
  color: #4F5156;
  font-size: 14px;
  line-height: 1.55;
}

.legal-email {
  color: #415EEE;
  font-weight: 600;
  text-decoration: none;
}

.legal-email:hover {
  text-decoration: underline;
}

.page-footer {
  padding: 36px 24px 48px;
  border-top: 1px solid #EEF1F6;
}

.page-footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  color: #6A6C70;
  font-size: 13px;
}

.page-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.page-footer a {
  color: #4F5156;
  text-decoration: none;
}

@media (max-width: 760px) {
  .subnav {
    border-radius: 24px;
  }

  .subnav-links a:not(.nav-primary) {
    display: none;
  }

  .subpage-main {
    padding-top: 44px;
  }

  .spec-grid,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .architecture {
    grid-template-columns: 1fr 1fr;
  }

  .requirement-item {
    padding: 26px 24px;
  }

  .legal-toc {
    position: static;
  }

  .legal-content {
    padding: 28px 22px;
  }

  .page-callout {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 440px) {
  .subnav-wrap {
    padding: 14px;
  }

  .subnav {
    padding: 0 16px;
  }

  .subpage-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .architecture {
    grid-template-columns: 1fr;
  }

  .requirement-item {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

.compat {
  max-width: 900px;
  margin: 0 auto 56px;
}

.compat h2,
.requirements-title {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.requirements-title {
  max-width: 900px;
  margin: 0 auto 20px;
}

.compat > p {
  margin: 12px 0 0;
  color: #5F6166;
  font-size: 16px;
  line-height: 1.6;
}

.compat-scroll {
  margin-top: 22px;
  overflow-x: auto;
  border: 1px solid #E7EAF1;
  border-radius: 20px;
  background: rgba(255,255,255,0.92);
}

.compat-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 14px;
  text-align: left;
}

.compat-table th,
.compat-table td {
  padding: 14px 18px;
  border-bottom: 1px solid #EEF1F6;
  vertical-align: top;
}

.compat-table tbody tr:last-child th,
.compat-table tbody tr:last-child td {
  border-bottom: 0;
}

.compat-table thead th {
  background: #F3F6FC;
  color: #3A3C41;
  font-size: 13px;
  font-weight: 700;
}

.compat-table tbody th {
  color: #222326;
  font-weight: 600;
}

.compat-table td {
  color: #5F6166;
}

.compat .compat-note {
  margin-top: 16px;
  font-size: 15px;
}

.compat-note strong {
  color: #33353A;
}

.compat-note a {
  color: #415EEE;
  font-weight: 600;
  text-decoration: none;
}

.page-callout p a {
  color: #FFFFFF;
  text-decoration: underline;
  text-underline-offset: 3px;
}