@font-face {
  font-family: "Archivo";
  src: url("/fonts/Archivo-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("/fonts/Inter-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --primary: #5b3fa8;
  --primary-dark: #221a38;
  --ai-active: #10b981;
  --text: #1d1730;
  --text-sub: #655e74;
  --border: #e2ddea;
  --surface: #f8f7fb;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  color: var(--text);
  background: #fff;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font: 17px/1.75 "Inter", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-underline-offset: 3px;
}

a:hover {
  color: #442c89;
}

.container {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: #fff;
  background: var(--primary-dark);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  z-index: 5;
  top: 0;
  background: rgb(255 255 255 / 96%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.nav,
.brand,
.language-toggle,
.footer-row,
.footer-links {
  display: flex;
  align-items: center;
}

.nav {
  min-height: 80px;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  gap: 10px;
  color: var(--text);
  font: 800 28px/1 "Archivo", system-ui, sans-serif;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: none;
}

.language-toggle {
  min-height: 48px;
  gap: 4px;
  padding: 4px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  font: 700 14px/1 "Inter", system-ui, sans-serif;
}

.language-toggle span {
  padding: 10px 12px;
  border-radius: 999px;
}

html:not([data-language="en"]) .language-toggle [data-language="vi"],
html[data-language="en"] .language-toggle [data-language="en"] {
  color: #fff;
  background: var(--primary);
}

.legal-hero {
  padding: 72px 0 64px;
  color: #fff;
  background: var(--primary-dark);
  border-bottom: 6px solid var(--ai-active);
}

.eyebrow {
  margin: 0 0 12px;
  color: #9de7cf;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.legal-hero h1 {
  max-width: 850px;
  margin: 0;
  font: 800 clamp(44px, 7vw, 76px)/1.02 "Archivo", system-ui, sans-serif;
  letter-spacing: -.04em;
}

.effective-date {
  margin: 24px 0 0;
  color: #d6d1e3;
}

.legal-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 760px);
  justify-content: space-between;
  gap: 72px;
  padding-block: 64px 96px;
}

.toc {
  position: sticky;
  top: 112px;
  align-self: start;
}

.toc strong {
  display: block;
  margin-bottom: 14px;
  font: 800 15px/1.3 "Archivo", system-ui, sans-serif;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.toc a {
  display: block;
  padding: 7px 0;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
}

.toc a:hover {
  color: var(--primary);
}

.legal-copy {
  min-width: 0;
}

.lead {
  margin: 0 0 48px;
  padding: 24px 28px;
  color: var(--text);
  background: #effbf7;
  border-left: 5px solid var(--ai-active);
  border-radius: 0 12px 12px 0;
  font-size: 18px;
}

.legal-copy section {
  scroll-margin-top: 112px;
  padding: 0 0 38px;
  margin: 0 0 38px;
  border-bottom: 1px solid var(--border);
}

.legal-copy section:last-child {
  border-bottom: 0;
}

.legal-copy h2 {
  margin: 0 0 16px;
  font: 800 clamp(26px, 4vw, 34px)/1.2 "Archivo", system-ui, sans-serif;
  letter-spacing: -.02em;
}

.legal-copy h3 {
  margin: 26px 0 8px;
  font: 750 20px/1.35 "Archivo", system-ui, sans-serif;
}

.legal-copy p,
.legal-copy ul {
  margin: 0 0 16px;
}

.legal-copy li + li {
  margin-top: 8px;
}

.legal-copy strong {
  color: var(--text);
}

.site-footer {
  padding: 30px 0;
  color: var(--text-sub);
  border-top: 1px solid var(--border);
}

.footer-row {
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  flex-wrap: wrap;
  gap: 8px 24px;
}

.footer-links a {
  color: var(--text-sub);
}

[data-en] {
  display: none !important;
}

html[data-language="en"] [data-vi] {
  display: none !important;
}

html[data-language="en"] [data-en] {
  display: revert !important;
}

@media (max-width: 800px) {
  .container {
    width: min(calc(100% - 32px), var(--max));
  }

  .nav {
    min-height: 68px;
  }

  .brand {
    font-size: 23px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .legal-hero {
    padding: 48px 0;
  }

  .legal-layout {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 44px 72px;
  }

  .toc {
    position: static;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
    columns: 2;
  }

  .toc strong {
    column-span: all;
  }

  .lead {
    padding: 20px;
  }

  .footer-row {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  .language-toggle span {
    padding: 9px;
  }

  .toc {
    columns: 1;
  }
}

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