:root {
  color-scheme: light dark;
  --canvas: #f5efe4;
  --surface: #fffdf8;
  --surface-raised: #fffaf1;
  --text: #372f26;
  --text-secondary: #675c50;
  --accent: #9e4524;
  --accent-hover: #7f351a;
  --on-accent: #fffaf2;
  --border: #d8cdbf;
  --focus: #1f6feb;
  --success: #2f6f4e;
  --warning: #8a5315;
  --shadow: 0 18px 50px rgb(67 46 27 / 8%);
  --radius-large: 24px;
  --radius-medium: 16px;
  --content: 74rem;
  --prose: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #211d17;
    --surface: #2c2721;
    --surface-raised: #332c25;
    --text: #f1eadc;
    --text-secondary: #c9bdad;
    --accent: #df8057;
    --accent-hover: #efa17f;
    --on-accent: #21140e;
    --border: #574c40;
    --focus: #78a9ff;
    --success: #8bc6a6;
    --warning: #e4b56f;
    --shadow: 0 18px 50px rgb(0 0 0 / 24%);
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--canvas);
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 20rem;
  background:
    radial-gradient(circle at 88% 3%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 27rem),
    var(--canvas);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(1rem, 0.97rem + 0.15vw, 1.075rem);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

a:focus-visible,
summary:focus-visible {
  border-radius: 0.3rem;
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  background: var(--text);
  color: var(--canvas);
  transform: translateY(-180%);
}

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

.site-header,
.site-footer,
main {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.7rem;
  box-shadow: 0 4px 13px rgb(79 41 22 / 15%);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding-inline: 0.78rem;
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
}

.site-nav .language-link {
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(16rem, 0.8fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: end;
  padding-block: clamp(4.5rem, 12vw, 9rem) clamp(3.5rem, 8vw, 7rem);
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-block: 0;
  color: var(--text);
  line-height: 1.18;
  text-wrap: balance;
}

h1 {
  max-width: 14ch;
  font-size: clamp(2.55rem, 8vw, 5.8rem);
  letter-spacing: -0.045em;
}

:lang(en) h1,
:lang(en) .editorial {
  font-family: ui-serif, Georgia, "Times New Roman", serif;
  font-weight: 620;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.12rem;
}

.hero-copy {
  max-width: 34rem;
  margin: 1.3rem 0 0;
  color: var(--text-secondary);
  font-size: clamp(1.08rem, 1rem + 0.45vw, 1.35rem);
}

.hero-note {
  margin: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  color: var(--text-secondary);
  box-shadow: var(--shadow);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-start: 1.7rem;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.button:hover {
  border-color: var(--accent);
}

.button.primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
}

.section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
  border-block-start: 1px solid var(--border);
}

.section-intro {
  max-width: 42rem;
  margin-block: 0.8rem 2rem;
  color: var(--text-secondary);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  padding: clamp(1.15rem, 2vw, 1.55rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card p {
  margin-block-end: 0;
  color: var(--text-secondary);
}

.document-header {
  max-width: var(--prose);
  padding-block: clamp(4rem, 10vw, 7rem) clamp(2.5rem, 6vw, 4rem);
}

.document-header h1 {
  max-width: 18ch;
  font-size: clamp(2.45rem, 7vw, 4.8rem);
}

.document-summary {
  margin-block: 1.2rem 0;
  color: var(--text-secondary);
  font-size: 1.16rem;
}

.document-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  margin-block-start: 1.2rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.document-layout {
  display: grid;
  grid-template-columns: minmax(12rem, 17rem) minmax(0, var(--prose));
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  padding-block-end: 6rem;
}

.toc {
  position: sticky;
  inset-block-start: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: var(--surface);
}

.toc strong {
  display: block;
  margin-block-end: 0.5rem;
}

.toc ol {
  margin: 0;
  padding-inline-start: 1.35rem;
}

.toc a {
  display: inline-block;
  padding-block: 0.22rem;
  color: var(--text-secondary);
}

.prose {
  min-width: 0;
}

.prose section {
  scroll-margin-top: 1.5rem;
  padding-block: 0 2.6rem;
}

.prose section + section {
  padding-block-start: 2.6rem;
  border-block-start: 1px solid var(--border);
}

.prose h2 {
  margin-block-end: 1rem;
}

.prose h3 {
  margin-block: 1.4rem 0.6rem;
}

.prose p,
.prose ul,
.prose ol,
.prose dl {
  margin-block: 0.75rem 0;
}

.prose li + li {
  margin-block-start: 0.5rem;
}

.prose dd {
  margin: 0.25rem 0 1rem;
  color: var(--text-secondary);
}

.prose dt {
  font-weight: 760;
}

.notice {
  margin-block: 1.5rem;
  padding: 1rem 1.1rem;
  border-inline-start: 0.3rem solid var(--accent);
  border-radius: 0 var(--radius-medium) var(--radius-medium) 0;
  background: var(--surface-raised);
}

.notice strong {
  display: block;
  margin-block-end: 0.25rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

details {
  border-block-start: 1px solid var(--border);
  padding-block: 1rem;
}

details:last-child {
  border-block-end: 1px solid var(--border);
}

summary {
  min-height: 44px;
  cursor: pointer;
  font-weight: 750;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-block: 2rem 3rem;
  border-block-start: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
}

code {
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}

@media (max-width: 52rem) {
  .site-header {
    align-items: flex-start;
  }

  .hero,
  .document-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
  }

  .toc {
    position: static;
  }

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

@media (max-width: 38rem) {
  .site-header {
    display: block;
  }

  .site-nav {
    justify-content: flex-start;
    margin-block-start: 0.5rem;
  }

  .site-nav a {
    padding-inline: 0.62rem;
  }

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

  .button {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (forced-colors: active) {
  .card,
  .toc,
  .hero-note,
  .button,
  .site-nav a[aria-current="page"] {
    border: 1px solid CanvasText;
    box-shadow: none;
  }

  .button.primary {
    forced-color-adjust: none;
    background: Highlight;
    color: HighlightText;
  }
}

@media print {
  body {
    background: white;
    color: black;
  }

  .site-header,
  .site-footer,
  .toc,
  .actions {
    display: none;
  }

  main {
    width: 100%;
  }

  .document-layout {
    display: block;
  }

  .prose section {
    break-inside: avoid;
  }
}