:root {
  --bg: #fbfaf7;
  --paper: #fffdfa;
  --ink: #111111;
  --muted: #68645d;
  --line: #e5ded3;
  --soft: #f1ede6;
  --soft-2: #f5f0e8;
  --accent: #111111;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    ui-serif,
    Georgia,
    "Times New Roman",
    "Noto Serif CJK SC",
    "Noto Serif CJK",
    "Source Han Serif SC",
    "Songti SC",
    "SimSun",
    serif;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

p {
  margin: 0 0 1.05em;
}

.page {
  width: min(900px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 90px;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: baseline;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.logo {
  font-weight: 700;
  letter-spacing: -0.025em;
  font-size: 22px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 22px;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Noto Sans CJK",
    "Microsoft YaHei",
    "PingFang SC",
    sans-serif;
  font-size: 13px;
  color: var(--muted);
}

nav a {
  position: relative;
}

nav a::after {
  position: absolute;
  right: 0;
  bottom: -5px;
  left: 0;
  height: 1px;
  background: var(--ink);
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 150ms ease, transform 150ms ease;
}

nav a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

nav a:hover,
.row:hover strong,
.text-link:hover,
.topic:hover,
.menu-card:hover strong {
  color: var(--ink);
}

.intro {
  padding: 96px 0 64px;
}

.kicker {
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-size: 12px;
  margin: 0 0 18px;
}

h1,
.page-title {
  margin: 0;
  font-size: clamp(48px, 9vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.07em;
  font-weight: 650;
}

.lead {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 21px;
  max-width: 650px;
}

.text-link {
  color: var(--muted);
}

.home-latest {
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.home-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 10px;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
}

.home-section-head h2 {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.home-section-head h2 span,
.home-section-head a {
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.home-section-head a:hover {
  color: var(--ink);
}

.home-row {
  align-items: center;
  padding: 27px 0;
}

.home-row > span:first-child {
  min-width: 0;
}

.row.home-row small {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 5px;
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.note-state {
  display: inline-block;
  padding: 2px 7px;
  background: var(--ink);
  color: var(--paper);
  font-size: 9px;
  letter-spacing: 0.12em;
  line-height: 1.5;
}

.row.home-row strong {
  font-size: clamp(23px, 3.2vw, 30px);
}

.home-row-meta {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
}

.home-row-meta time {
  font-size: 11px;
  letter-spacing: 0.04em;
}

.row.home-row .home-row-meta em {
  color: var(--ink);
  font-size: 20px;
  transition: transform 160ms ease;
}

.row.home-row:hover .home-row-meta em {
  transform: translateX(4px);
}

.link-list,
.template-list {
  border-top: 1px solid var(--line);
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.row strong {
  display: block;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.row small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
}

.row em {
  flex: 0 0 auto;
  color: var(--muted);
  font-style: normal;
  font-size: 14px;
}

.section {
  padding: 62px 0;
  border-bottom: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 24px;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1;
  letter-spacing: -0.055em;
  font-weight: 650;
}

.section-label {
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 14px;
  margin-bottom: 8px;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.menu-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--paper);
  padding: 24px;
  min-height: 196px;
  display: flex;
  flex-direction: column;
}

.menu-card strong {
  display: block;
  font-size: 24px;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.menu-card span {
  color: var(--muted);
  display: block;
  margin-top: 10px;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
}

.menu-card a {
  color: var(--muted);
  margin-top: auto;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
}

.two-column {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 44px;
  align-items: start;
}

.note-box {
  background: var(--soft);
  border-radius: 24px;
  padding: 26px 30px;
  color: var(--muted);
}

.note-box p:first-child { margin-top: 0; }
.note-box ul { margin: 0; padding-left: 21px; }

.disclosure,
.meta {
  margin-top: 18px;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
}

.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 20px;
}

.topic {
  border: 1px solid var(--line);
  background: var(--soft);
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
}

.footer {
  padding-top: 42px;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
}

.footer strong { color: var(--ink); }
.fineprint { margin-top: 6px; }

.home-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.footer-identity,
.footer-message {
  display: flex;
  flex-direction: column;
}

.footer-message {
  align-items: flex-end;
  text-align: right;
}

.footer-kicker {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-copy {
  color: var(--ink);
  font-family:
    ui-serif,
    Georgia,
    "Times New Roman",
    "Noto Serif CJK SC",
    serif;
  font-size: 15px;
}

.footer-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
}

.content {
  padding-top: 72px;
}

.content p,
.content li {
  color: var(--muted);
  font-size: 18px;
}

.content h2 {
  margin: 48px 0 16px;
  font-size: 34px;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.content h3 {
  margin: 28px 0 10px;
  font-size: 24px;
  line-height: 1.2;
}

.back {
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 14px;
}

.callout {
  background: var(--soft-2);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  margin: 28px 0;
}

.callout p:last-child {
  margin-bottom: 0;
}

.template {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px;
  margin-top: 24px;
}

.template ul {
  margin: 0;
}

/* Long-form articles */
.article {
  max-width: 760px;
  margin: 0 auto;
}

.article-header {
  margin: 58px 0 48px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.article-title {
  max-width: 720px;
  font-size: clamp(52px, 9vw, 82px);
}

.article-dek {
  max-width: 620px;
  margin: 26px 0 0;
  color: var(--ink) !important;
  font-size: clamp(20px, 3vw, 27px) !important;
  line-height: 1.45;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 24px;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 12px;
  letter-spacing: 0.03em;
}

.article-meta span + span::before {
  margin-right: 20px;
  color: var(--line);
  content: "/";
}

.article > p,
.article > ul,
.article > ol,
.article-callout,
.rule-list,
.sources {
  max-width: 680px;
}

.article > p,
.article > ul li,
.article > ol li,
.article-callout p,
.source-list li {
  font-size: 18px;
}

.article-opening {
  color: var(--ink) !important;
  font-size: 21px !important;
  line-height: 1.8;
}

.article-summary {
  margin: 0 0 40px;
  padding: 28px 30px;
  background: var(--soft-2);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.article-summary p,
.article-summary li {
  font-size: 17px;
}

.article-summary p:last-child,
.article-summary ul:last-child {
  margin-bottom: 0;
}

.article-summary ul {
  margin: 12px 0 0;
  padding-left: 1.25em;
}

.article h2 {
  max-width: 680px;
  margin-top: 64px;
  font-size: clamp(29px, 4vw, 38px);
}

.inline-link,
.source-list a {
  text-decoration: underline;
  text-decoration-color: #b7afa4;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.inline-link:hover,
.source-list a:hover {
  text-decoration-color: var(--ink);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0;
}

.evidence-card {
  min-height: 190px;
  padding: 26px;
  background: var(--ink);
  border: 1px solid var(--ink);
  color: var(--paper);
}

.evidence-card strong,
.evidence-card span {
  display: block;
}

.evidence-card strong {
  font-size: clamp(44px, 7vw, 64px);
  line-height: 1;
  letter-spacing: -0.06em;
}

.evidence-card span {
  margin-top: 30px;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px;
  line-height: 1.65;
}

.muted-card {
  background: var(--soft-2);
  border-color: var(--line);
  color: var(--ink);
}

.key-line {
  margin: 42px 0;
  padding: 6px 0 6px 26px;
  border-left: 3px solid var(--ink);
}

.key-line p {
  margin: 0;
  color: var(--ink);
  font-size: clamp(22px, 3.3vw, 28px);
  line-height: 1.55;
}

.article-callout {
  border-radius: 2px;
}

.table-wrap {
  margin: 30px 0;
  overflow-x: auto;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--muted);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.comparison-table th {
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.comparison-table th:last-child,
.comparison-table td:last-child {
  text-align: right;
  white-space: nowrap;
}

.comparison-table tbody tr:last-child td {
  border-bottom: 0;
}

.decision-table th:last-child,
.decision-table td:last-child {
  text-align: left;
  white-space: normal;
}

.rule-list {
  margin: 30px 0;
  border-top: 1px solid var(--ink);
}

.rule-list > div {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.rule-list span {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}

.rule-list p {
  margin: 0;
  font-size: 17px;
}

.closing-summary {
  margin-top: 32px;
}

.closing-summary p:first-child,
.closing-summary p:nth-child(2) {
  margin-bottom: 2px;
  color: var(--ink);
  font-size: clamp(22px, 3vw, 28px);
}

.sources {
  margin-top: 68px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.sources h2 {
  margin-top: 36px;
  font-size: 26px;
}

.source-list {
  padding-left: 1.25em;
}

.source-list li {
  margin-bottom: 12px;
  overflow-wrap: anywhere;
}

.article-note {
  margin-top: 44px !important;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 13px !important;
}

@media (max-width: 760px) {
  .page {
    width: min(100% - 32px, 900px);
    padding-top: 24px;
  }

  .top {
    display: block;
  }

  nav {
    justify-content: flex-start;
    gap: 18px;
    margin-top: 16px;
    font-size: 13px;
  }

  .intro {
    padding: 68px 0 46px;
  }

  .lead {
    font-size: 18px;
  }

  .row {
    display: block;
  }

  .row em {
    display: block;
    margin-top: 8px;
  }

  .home-section-head,
  .home-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .footer-message {
    align-items: flex-start;
    text-align: left;
  }

  .home-row {
    display: flex;
    gap: 14px;
    padding: 22px 0;
  }

  .home-row-meta {
    gap: 9px;
  }

  .home-row-meta time {
    font-size: 10px;
  }

  .home-row .home-row-meta em {
    display: block;
    margin-top: 0;
  }

  .two-column,
  .menu-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 46px 0;
  }

  .article-header {
    margin: 44px 0 34px;
  }

  .article-title {
    font-size: clamp(47px, 15vw, 66px);
  }

  .article-meta span + span::before {
    margin-right: 8px;
  }

  .article-meta {
    gap: 6px 8px;
  }

  .article-summary {
    padding: 22px 20px;
  }

  .article > p,
  .article > ul li,
  .article > ol li,
  .article-callout p,
  .source-list li {
    font-size: 17px;
  }

  .article-opening {
    font-size: 19px !important;
  }

  .article h2 {
    margin-top: 52px;
  }

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

  .evidence-card {
    min-height: 165px;
  }

  .key-line {
    margin: 34px 0;
    padding-left: 20px;
  }

  .comparison-table {
    min-width: 570px;
  }

  .decision-table {
    min-width: 520px;
  }

  .sources {
    margin-top: 54px;
  }
}