:root {
  --ink: #18211b;
  --muted: #5d675f;
  --paper: #f6f3eb;
  --surface: #fffdf8;
  --line: #d9d4c8;
  --accent: #0b6b43;
  --accent-soft: #dcebdd;
  --warning: #8a3b12;
  --warning-soft: #fff0e3;
  --shadow: 0 18px 60px rgba(24, 33, 27, 0.08);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 92% 6%, rgba(11, 107, 67, 0.12), transparent 24rem),
    linear-gradient(180deg, #fbf9f3 0%, var(--paper) 100%);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid #e6a91d;
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 30;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
}

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

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 26px 0 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 50% 50% 50% 12px;
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: flex-end;
  font-size: 14px;
}

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

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration: underline;
}

.draft-banner {
  display: none;
  margin: 18px 0 0;
  padding: 12px 16px;
  color: var(--warning);
  background: var(--warning-soft);
  border: 1px solid #e5b78f;
  border-radius: 12px;
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 14px;
}

.draft-banner.is-visible {
  display: block;
}

.document-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 54px;
  padding: 64px 0 96px;
}

.document {
  min-width: 0;
  padding: clamp(28px, 6vw, 72px);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  border: 1px solid rgba(217, 212, 200, 0.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.35;
  text-wrap: balance;
}

h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(34px, 6vw, 64px);
  letter-spacing: -0.04em;
}

h2 {
  margin: 2.8em 0 0.7em;
  padding-top: 0.2em;
  font-size: clamp(23px, 3vw, 31px);
  letter-spacing: -0.02em;
}

h3 {
  margin: 2em 0 0.5em;
  font-size: 19px;
}

p,
li {
  max-width: 74ch;
}

.lede {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 28px 0 44px;
  padding: 18px 0;
  color: var(--muted);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 14px;
}

.notice {
  margin: 28px 0;
  padding: 20px 22px;
  background: var(--accent-soft);
  border-left: 5px solid var(--accent);
  border-radius: 4px 14px 14px 4px;
}

.document ul,
.document ol {
  padding-left: 1.35em;
}

.document li + li {
  margin-top: 0.45em;
}

.table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: #fff;
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 14px;
  line-height: 1.55;
}

th,
td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

th {
  color: #fff;
  background: var(--ink);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

.toc {
  position: sticky;
  top: 24px;
  align-self: start;
  padding: 20px;
  border-top: 4px solid var(--accent);
  background: rgba(255, 253, 248, 0.8);
  backdrop-filter: blur(14px);
}

.toc strong {
  display: block;
  margin-bottom: 10px;
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

.toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

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

.document-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.document-card {
  min-height: 176px;
  padding: 24px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.document-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.document-card span {
  display: block;
  color: var(--accent);
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.document-card h2 {
  margin: 16px 0 8px;
  padding: 0;
  font-size: 24px;
}

.document-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  padding: 34px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 13px;
}

.site-footer p {
  margin: 5px 0;
}

@media (max-width: 1080px) {
  .site-header,
  .document-layout {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .document-layout {
    gap: 24px;
    padding-top: 36px;
  }

  .toc {
    position: static;
    order: 0;
  }
}

@media (max-width: 620px) {
  .site-shell {
    width: min(100% - 20px, 1180px);
  }

  .site-header {
    padding-top: 18px;
  }

  .document {
    padding: 28px 20px 38px;
    border-radius: 16px;
  }

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

  h1 {
    font-size: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media print {
  body {
    background: #fff;
  }

  .site-header,
  .toc,
  .draft-banner {
    display: none !important;
  }

  .site-shell {
    width: 100%;
  }

  .document-layout {
    display: block;
    padding: 0;
  }

  .document {
    padding: 0;
    border: 0;
    box-shadow: none;
  }
}