:root {
  color-scheme: light;
  --ink: #19353e;
  --muted: #536970;
  --paper: #faf8f3;
  --white: #fff;
  --accent: #95543d;
  --line: #d9dfda;
  --soft: #edf1ec;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Noto Sans CJK SC', 'Microsoft YaHei', 'PingFang SC', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: -6rem;
  left: 1rem;
  z-index: 10;
  background: var(--white);
  padding: 0.6rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header,
.site-footer,
.home,
.policy-layout,
.policy-hero {
  width: min(1120px, calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand img {
  width: 40px;
  height: 40px;
}

.brand span span {
  color: var(--accent);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 14px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a[aria-current='page'] {
  color: var(--ink);
  text-decoration: underline;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

h1,
h2,
h3 {
  line-height: 1.3;
  text-wrap: balance;
}

h1 {
  margin: 0 0 24px;
  font-family: 'Noto Serif CJK SC', 'Songti SC', Georgia, serif;
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.04em;
}

h2 {
  margin: 0 0 18px;
  font-size: 25px;
  letter-spacing: -0.02em;
}

h3 {
  margin: 22px 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 16px;
}

.home {
  padding-block: 72px 64px;
}

.home-hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
  padding-bottom: 64px;
}

.home-copy > p:not(.eyebrow) {
  max-width: 38rem;
  color: var(--muted);
  font-size: 18px;
}

.hero-note {
  background: var(--ink);
  color: var(--paper);
  padding: 36px;
  border-radius: 12px;
}

.hero-note .eyebrow {
  color: #e1b69f;
}

.hero-note h2 {
  font-family: 'Noto Serif CJK SC', 'Songti SC', Georgia, serif;
  font-size: 30px;
}

.hero-note p:last-child {
  margin: 0;
  color: #d8e3df;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 30px;
}

.button-link {
  display: inline-block;
  border-radius: 6px;
  background: var(--ink);
  color: var(--white);
  padding: 11px 20px;
  font-weight: 600;
  text-decoration: none;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--line);
}

.feature {
  padding: 30px 28px;
}

.feature + .feature {
  border-left: 1px solid var(--line);
}

.feature h2 {
  font-size: 21px;
}

.feature p {
  color: var(--muted);
  margin: 0;
}

.support-note {
  max-width: 740px;
  margin-top: 36px;
  color: var(--muted);
  font-size: 14px;
}

.policy-hero {
  padding-block: 64px 36px;
}

.policy-hero .lede {
  max-width: 730px;
  color: var(--muted);
  font-size: 18px;
}

.metadata {
  color: var(--muted);
  font-size: 13px;
}

.policy-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 60px;
  align-items: start;
  padding-bottom: 64px;
}

.contents {
  position: sticky;
  top: 28px;
  padding-top: 8px;
  font-size: 14px;
}

.contents h2 {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.contents ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.contents a {
  color: var(--muted);
  text-decoration: none;
}

.contents a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.policy-body {
  min-width: 0;
}

.key-note {
  border-left: 4px solid var(--accent);
  background: var(--soft);
  padding: 24px 28px;
  margin-bottom: 40px;
}

.key-note h2 {
  font-size: 21px;
}

.key-note p:last-child {
  margin: 0;
}

.policy-body section {
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
}

.policy-body section:first-of-type {
  padding-top: 0;
}

.policy-body ul {
  padding-left: 1.4em;
  margin-block: 12px 20px;
}

.policy-body li + li {
  margin-top: 8px;
}

code {
  font-family: ui-monospace, 'Cascadia Code', monospace;
  font-size: 0.9em;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-block: 26px 34px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 820px) {
  .home-hero,
  .policy-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .home-hero {
    padding-bottom: 40px;
  }

  .contents {
    position: static;
    padding: 20px;
    background: var(--soft);
    border-radius: 6px;
  }

  .contents ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .feature {
    padding: 24px 0;
  }

  .feature + .feature {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 520px) {
  .site-header,
  .site-footer,
  .home,
  .policy-layout,
  .policy-hero {
    width: calc(100% - 36px);
  }

  .site-header {
    min-height: 120px;
    flex-wrap: wrap;
    gap: 8px;
    padding-block: 20px;
  }

  .site-nav {
    gap: 18px;
  }

  .home,
  .policy-hero {
    padding-top: 40px;
  }

  .hero-note,
  .key-note {
    padding: 24px;
  }

  .contents ol {
    grid-template-columns: 1fr;
  }
}

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

@media print {
  .site-header,
  .site-footer,
  .contents,
  .skip-link {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .policy-layout {
    display: block;
    width: 100%;
  }

  .policy-hero {
    width: 100%;
    padding-top: 0;
  }

  a {
    color: black;
  }
}