:root {
  --paper: #f3f0e8;
  --card: #fffcf6;
  --ink: #1a1814;
  --muted: #3f3b36;
  --teal: #0c5f59;
  --teal-deep: #084843;
  --soft: #e5f3f1;
  --line: #d9d3c7;
  --warn: #f3ecdf;
  --sans: "Noto Sans CJK SC", "Noto Sans CJK TC", "PingFang SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --serif: "Noto Serif CJK SC", "Noto Serif CJK TC", "Songti SC", "Noto Sans CJK SC", serif;
  color-scheme: light;
}

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

html { scroll-behavior: auto; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
}

body::before {
  content: "";
  display: block;
  height: 4px;
  background: var(--teal);
}

img { border: 0; }

a { color: var(--teal); }

a:hover { color: var(--teal-deep); }

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.skip:focus {
  position: fixed;
  z-index: 5;
  width: auto;
  height: auto;
  clip: auto;
  top: 8px;
  left: 8px;
  background: var(--card);
  color: var(--ink);
  padding: 0.5rem 0.8rem;
}

.wrap {
  width: min(1120px, 100%);
  margin-inline: auto;
  padding: 0 20px;
}

.nameplate {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.nameplate-row,
.nav,
.hero-actions,
.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.brand {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.7rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.brand-note,
.eyebrow,
.kicker,
.thumb-note,
.meta dt {
  color: var(--muted);
  font-size: 0.92rem;
}

.brand-note { margin: 0; }

.nav a { text-underline-offset: 0.18em; }

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.45rem 0.95rem;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-weight: 650;
}

.cta:hover { background: var(--teal-deep); color: var(--paper); }

.hero { padding: 16px 0 4px; }

.hero-copy {
  border-left: 6px solid var(--teal);
  padding-left: 16px;
}

.eyebrow { margin: 0 0 8px; }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 650;
  line-height: 1.35;
  overflow-wrap: break-word;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.85rem, 4vw, 3rem);
  max-width: 12em;
}

h1 { font-size: clamp(1.45rem, 2.5vw, 2.15rem); margin: 0.2rem 0 0.8rem; }

h2 { font-size: 1.35rem; margin: 1.6rem 0 0.6rem; }

h3 { font-size: 1.12rem; margin: 1.1rem 0 0.35rem; }

.lede { max-width: 36em; margin: 0 0 12px; }

.metric { margin: 10px 0 0; color: var(--muted); }

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 650;
}

.ledger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 0 0 18px;
  background: var(--line);
  border: 1px solid var(--line);
  max-width: 760px;
}

.ledger div { background: var(--card); padding: 0.75rem 0.9rem; }

.ledger dd {
  margin: 0;
  color: var(--teal);
  font-family: var(--serif);
  font-size: 1.8rem;
  line-height: 1.1;
}

.ledger dt { margin: 0; }

.fine, .thumb-note { color: var(--muted); font-size: 0.92rem; }

.filters { margin: 8px 0 14px; }

.filters button {
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  min-height: 44px;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
}

.filters button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.cards, .plain, .crumbs ol { list-style: none; margin: 0; padding: 0; }

.cards { display: grid; gap: 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
}

.card-link {
  display: grid;
  grid-template-columns: auto 96px minmax(0, 1fr);
  gap: 10px 12px;
  padding: 14px 16px;
  align-items: start;
  color: inherit;
  text-decoration: none;
  min-width: 0;
}

.card-visual { grid-column: auto; max-width: 96px; }

.card-visual img,
.cover img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
}

.card-visual { max-width: 160px; }

.card-visual img { max-width: min(160px, 100%); }

.cover { max-width: 100%; margin: 0 0 1rem; }

.num {
  font-family: var(--serif);
  font-size: 1.45rem;
  color: var(--teal);
  line-height: 1;
}

.card-title {
  display: block;
  font-family: var(--serif);
  font-size: 1.16rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.card-link:hover .card-title { text-decoration: underline; text-underline-offset: 0.16em; }

.card-sum { display: block; margin-top: 4px; overflow-wrap: anywhere; }

.type-mark,
.note-card,
.banner,
.aside,
.topic {
  overflow-wrap: anywhere;
}

.type-mark {
  display: grid;
  gap: 2px;
  min-height: 92px;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--soft);
}

.home-grid,
.sheet-grid { display: flex; flex-direction: column; gap: 28px; min-width: 0; }

.home-main,
.sheet-main,
.aside,
.home-grid > *,
.sheet-grid > * { min-width: 0; }

.aside {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px;
}

.meta { display: grid; gap: 12px; margin: 0; }

.meta dd { margin: 0; overflow-wrap: anywhere; }

.banner {
  background: var(--warn);
  border-left: 4px solid var(--teal);
  padding: 0.8rem 1rem;
}

.note-card {
  background: var(--soft);
  padding: 0.9rem 1rem;
  margin: 0 0 1rem;
}

.topic-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.topic-jump a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.2rem 0.75rem;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
}

.aside .topic-jump a { background: var(--paper); }

.pager a,
.plain a { text-underline-offset: 0.15em; }

.plain li + li { margin-top: 0.35rem; }

.topic + .topic { margin-top: 0.4rem; }

.pager { display: grid; gap: 12px; }

.pager a, .plain { overflow-wrap: anywhere; }

.crumbs ol { display: flex; flex-wrap: wrap; gap: 0.35rem 0.5rem; }
.crumbs li:not(:last-child)::after { content: "/"; color: var(--muted); margin-left: 0.5rem; }

.site-footer {
  margin-top: 36px;
  padding: 22px 0 40px;
  border-top: 1px solid var(--line);
}

[hidden] { display: none !important; }

@media (max-width: 719px) {
  .hero { padding: 12px 0 0; }
  .hero h1 { max-width: none; margin-bottom: 6px; }
  .lede { margin-bottom: 10px; }
  h2 { margin-top: 1.05rem; }
}

@media (min-width: 720px) {
  .card-link { grid-template-columns: auto 148px minmax(0, 1fr); }
  .card-visual { max-width: 148px; }
  .pager { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 960px) {
  .home-grid,
  .sheet-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: start;
  }
  .aside { position: sticky; top: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .aside { position: static; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media (forced-colors: active) {
  .cta, .filters button, .card, .type-mark { border: 1px solid ButtonText; }
}