:root {
  --paper: #f4f0e6;
  --paper-deep: #e8e1d3;
  --ink: #15201d;
  --ink-soft: #42504b;
  --line: rgba(21, 32, 29, 0.2);
  --lime: #d9f26a;
  --coral: #f27f68;
  --blue: #79afbf;
  --gold: #e7be56;
  --teal: #62a897;
  --white: #fffdf7;
  --content: 1200px;
  --radius: 6px;
  --shadow: 0 20px 60px rgba(21, 32, 29, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(21, 32, 29, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 32, 29, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  color: var(--ink);
  background: var(--lime);
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 4px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.site-header {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  max-width: var(--content);
  min-height: 82px;
  margin: 0 auto;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  width: fit-content;
  font-weight: 800;
}

.brand-mark {
  margin-right: 7px;
  padding: 3px 8px 2px;
  color: var(--ink);
  background: var(--lime);
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-family: Georgia, "Songti SC", serif;
  font-size: 24px;
  line-height: 1;
}

.brand-name {
  font-family: Georgia, "Songti SC", serif;
  font-size: 23px;
}

.brand-dot {
  color: var(--coral);
}

.site-nav {
  display: flex;
  gap: 32px;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  position: relative;
  padding: 28px 0 25px;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--coral);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.header-cta {
  display: inline-flex;
  justify-self: end;
  align-items: center;
  gap: 16px;
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 800;
  transition: color 180ms ease, background 180ms ease;
}

.header-cta:hover {
  color: var(--paper);
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.88fr);
  gap: 56px;
  align-items: center;
  max-width: var(--content);
  min-height: 690px;
  margin: 0 auto;
  padding: 72px 24px 82px;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1,
.catalog-section h2,
.sets-intro h2,
.about-section h2,
.article-heading h1,
.article-body h2,
.not-found h1 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", "Songti SC", serif;
  font-weight: 500;
  letter-spacing: 0;
}

.hero h1 {
  font-size: 108px;
  line-height: 0.92;
}

.hero-lede {
  margin: 30px 0 0;
  font-family: Georgia, "Noto Serif SC", "Songti SC", serif;
  font-size: 38px;
  line-height: 1.25;
}

em {
  color: var(--coral);
  font-style: normal;
}

.hero-description {
  max-width: 610px;
  margin: 25px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 34px;
  min-height: 52px;
  padding: 0 20px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 5px 5px 0 var(--ink);
}

.button-primary {
  background: var(--lime);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 3px;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
  font-weight: 800;
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.visual-map {
  position: absolute;
  inset: 15px 0 auto auto;
  width: 470px;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 50%;
  box-shadow: var(--shadow);
}

.visual-map::before {
  position: absolute;
  inset: 19px;
  border: 1px solid rgba(244, 240, 230, 0.3);
  border-radius: inherit;
  content: "";
}

.visual-map svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.visual-map path {
  fill: none;
  stroke: var(--lime);
  stroke-dasharray: 3 9;
  stroke-linecap: round;
  stroke-width: 2;
}

.visual-map circle {
  fill: var(--coral);
  stroke: var(--paper);
  stroke-width: 3;
}

.map-label {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 54px;
  aspect-ratio: 1;
  place-items: center;
  color: var(--paper);
  border: 1px solid rgba(244, 240, 230, 0.6);
  border-radius: 50%;
  font-family: Georgia, "Songti SC", serif;
  font-size: 24px;
}

.map-label-a { top: 17%; left: 20%; }
.map-label-b { top: 29%; right: 16%; }
.map-label-c { right: 30%; bottom: 14%; }
.map-label-d { bottom: 28%; left: 12%; }

.visual-caption {
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 4;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  min-width: 220px;
  padding: 15px 18px;
  background: var(--coral);
  border: 1px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
}

.visual-caption span:first-child {
  font-family: Georgia, serif;
  font-size: 72px;
  line-height: 0.8;
}

.visual-caption span:last-child {
  font-size: 10px;
  font-weight: 900;
  line-height: 1.25;
}

.visual-orbit {
  position: absolute;
  border: 1px solid var(--ink);
  border-radius: 50%;
  opacity: 0.28;
}

.orbit-one { top: 0; right: 62px; width: 470px; aspect-ratio: 1; transform: scale(1.08); }
.orbit-two { top: 80px; right: 0; width: 360px; aspect-ratio: 1; transform: scale(1.18); }

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: var(--content);
  margin: 0 auto 110px;
  border: 1px solid var(--ink);
  border-right: 0;
  background: var(--white);
}

.trust-strip div {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 90px;
  padding: 20px 25px;
  border-right: 1px solid var(--ink);
}

.trust-strip b {
  font-family: Georgia, serif;
  font-size: 38px;
}

.trust-strip span {
  color: var(--ink-soft);
  font-size: 12px;
}

.catalog-section,
.sets-section,
.about-section,
.article-main,
.site-footer {
  max-width: var(--content);
  margin-right: auto;
  margin-left: auto;
}

.catalog-section {
  padding: 0 24px 125px;
}

.section-intro {
  display: grid;
  grid-template-columns: 1.05fr 0.75fr;
  gap: 90px;
  align-items: end;
  margin-bottom: 54px;
}

.section-intro h2,
.sets-intro h2,
.about-section h2 {
  font-size: 58px;
  line-height: 1.08;
}

.section-intro > p,
.sets-intro > p,
.about-section > div > p:not(.eyebrow) {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.strategy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.strategy-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto 1fr;
  gap: 18px 14px;
  min-height: 210px;
  padding: 22px;
  overflow: hidden;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: rgba(255, 253, 247, 0.62);
  transition: background 180ms ease, transform 180ms ease;
}

.strategy-card::before {
  position: absolute;
  right: -45px;
  bottom: -45px;
  width: 120px;
  aspect-ratio: 1;
  border: 1px solid currentColor;
  border-radius: 50%;
  content: "";
  opacity: 0.2;
  transition: transform 180ms ease;
}

.strategy-card:hover {
  z-index: 2;
  background: var(--accent);
  transform: translate(-4px, -4px);
  box-shadow: 5px 5px 0 var(--ink);
}

.strategy-card:hover::before {
  transform: scale(1.5);
}

.card-index,
.card-set {
  font-size: 11px;
  font-weight: 800;
}

.card-set {
  justify-self: end;
}

.strategy-card strong {
  grid-column: 1 / -1;
  font-family: Georgia, "Songti SC", serif;
  font-size: 29px;
  font-weight: 500;
}

.card-angle {
  align-self: end;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.45;
}

.card-arrow {
  align-self: end;
  justify-self: end;
  font-size: 18px;
}

.tone-lime { --accent: var(--lime); }
.tone-coral { --accent: var(--coral); }
.tone-blue { --accent: var(--blue); }
.tone-gold { --accent: var(--gold); }
.tone-teal { --accent: var(--teal); }
.tone-ink { --accent: var(--paper-deep); }

.sets-section {
  display: grid;
  grid-template-columns: 0.58fr 1.42fr;
  gap: 62px;
  padding: 115px 24px;
  border-top: 1px solid var(--ink);
}

.sets-intro {
  position: sticky;
  top: 30px;
  align-self: start;
}

.sets-intro > p:last-child {
  margin-top: 28px;
}

.sets-grid {
  border-top: 1px solid var(--ink);
}

.set-block {
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
  background: rgba(255, 253, 247, 0.62);
}

.set-heading {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 20px;
  align-items: center;
  min-height: 112px;
  padding: 18px 24px;
  background: var(--accent);
  border-bottom: 1px solid var(--ink);
}

.set-number {
  font-family: Georgia, serif;
  font-size: 48px;
}

.set-heading .eyebrow {
  margin-bottom: 4px;
}

.set-heading h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.set-list a {
  display: grid;
  grid-template-columns: 115px 1fr auto;
  gap: 20px;
  align-items: center;
  min-height: 62px;
  padding: 12px 22px;
  border-bottom: 1px solid var(--line);
  transition: padding-left 180ms ease, background 180ms ease;
}

.set-list a:last-child {
  border-bottom: 0;
}

.set-list a:hover {
  padding-left: 30px;
  background: var(--white);
}

.set-list span {
  font-family: Georgia, "Songti SC", serif;
  font-size: 19px;
}

.set-list small {
  color: var(--ink-soft);
  font-size: 12px;
}

.about-section {
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 110px 24px;
  border-top: 1px solid var(--ink);
}

.about-stamp {
  display: grid;
  width: 230px;
  aspect-ratio: 1;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 36px;
  line-height: 0.95;
  text-align: center;
  transform: rotate(-8deg);
}

.about-section > div > p:not(.eyebrow) {
  max-width: 690px;
  margin: 26px 0 24px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px 40px;
  align-items: end;
  padding: 50px 24px 40px;
  border-top: 1px solid var(--ink);
}

.site-footer > div:first-child {
  display: flex;
  flex-direction: column;
}

.site-footer strong {
  font-family: Georgia, serif;
  font-size: 30px;
}

.site-footer span,
.site-footer small {
  color: var(--ink-soft);
  font-size: 12px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  font-weight: 800;
}

.site-footer > small {
  grid-column: 1 / -1;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding: 28px 24px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}

.breadcrumbs a:hover {
  color: var(--coral);
}

.strategy-article {
  padding: 0 24px;
}

.article-heading {
  max-width: 920px;
  padding: 80px 0 88px;
}

.article-kicker {
  display: flex;
  gap: 24px;
  margin-bottom: 26px;
  font-size: 12px;
  font-weight: 800;
}

.article-kicker span:first-child {
  padding: 2px 8px;
  background: var(--lime);
  border: 1px solid var(--ink);
}

.article-heading h1 {
  font-size: 96px;
  line-height: 1;
}

.article-angle {
  margin: 27px 0 0;
  color: var(--coral);
  font-family: Georgia, "Songti SC", serif;
  font-size: 29px;
}

.article-lede {
  max-width: 820px;
  margin: 25px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 78px;
  border-top: 1px solid var(--ink);
}

.article-aside {
  align-self: start;
  margin-top: 42px;
  padding: 22px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
}

.aside-label {
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(244, 240, 230, 0.3);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.article-aside p {
  margin: 24px 0 40px;
  font-family: Georgia, serif;
  font-size: 25px;
}

.article-aside a {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--lime);
  font-size: 12px;
  font-weight: 800;
}

.article-body {
  max-width: 760px;
}

.article-body section {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.article-body h2 {
  font-size: 42px;
  line-height: 1.16;
}

.article-body section > p:last-child,
.article-body section > h2 + p {
  color: var(--ink-soft);
  font-size: 17px;
}

.source-note {
  margin-top: 24px;
  padding: 18px 20px;
  color: var(--ink) !important;
  background: var(--lime);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-family: Georgia, "Songti SC", serif;
  line-height: 1.75;
}

.story-copy,
.example-copy {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  align-items: start;
  margin-top: 28px;
}

.story-copy > span,
.example-copy > span {
  display: grid;
  width: 58px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-family: Georgia, "Songti SC", serif;
  font-size: 25px;
}

.story-copy p,
.example-copy p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.example-copy {
  padding: 24px;
  background: var(--white);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.example-copy > span {
  background: var(--blue);
}

.boundary-section {
  position: relative;
}

.boundary-section::before {
  position: absolute;
  top: 49px;
  right: 0;
  padding: 4px 10px;
  background: var(--coral);
  border: 1px solid var(--ink);
  content: "STOP / CHECK";
  font-size: 10px;
  font-weight: 900;
}

.boundary-note {
  margin-top: 25px;
  padding: 20px 22px;
  color: var(--ink) !important;
  background: var(--white);
  border-left: 5px solid var(--coral);
}

.related-links {
  margin-top: 27px;
  border-top: 1px solid var(--ink);
}

.related-links a {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 20px;
  align-items: center;
  min-height: 76px;
  padding: 12px 15px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
  transition: background 180ms ease;
}

.related-links a:hover {
  background: var(--lime);
}

.related-links span {
  font-family: Georgia, "Songti SC", serif;
  font-size: 19px;
}

.related-links small {
  color: var(--ink-soft);
}

.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 100px 24px 115px;
  border: 1px solid var(--ink);
}

.article-pager a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 115px;
  padding: 23px;
  transition: background 180ms ease;
}

.article-pager a + a {
  align-items: flex-end;
  border-left: 1px solid var(--ink);
}

.article-pager a:hover {
  background: var(--lime);
}

.article-pager small {
  color: var(--ink-soft);
}

.article-pager strong {
  font-family: Georgia, "Songti SC", serif;
  font-size: 22px;
  font-weight: 500;
}

.not-found {
  max-width: 900px;
  min-height: 620px;
  margin: 0 auto;
  padding: 120px 24px;
}

.not-found h1 {
  font-size: 88px;
}

.not-found > p:not(.eyebrow) {
  max-width: 520px;
  margin: 24px 0 30px;
  color: var(--ink-soft);
  font-size: 18px;
}

.page-ready .hero-copy > * {
  animation: rise-in 600ms both;
}

.page-ready .hero-copy > :nth-child(2) { animation-delay: 80ms; }
.page-ready .hero-copy > :nth-child(3) { animation-delay: 150ms; }
.page-ready .hero-copy > :nth-child(4) { animation-delay: 220ms; }
.page-ready .hero-copy > :nth-child(5) { animation-delay: 290ms; }
.page-ready .hero-visual { animation: map-in 850ms 100ms both; }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes map-in {
  from { opacity: 0; transform: scale(0.96) rotate(-2deg); }
  to { opacity: 1; transform: scale(1) rotate(0); }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr 360px;
    gap: 30px;
  }

  .hero h1 {
    font-size: 82px;
  }

  .hero-lede {
    font-size: 31px;
  }

  .hero-visual {
    min-height: 430px;
  }

  .visual-map,
  .orbit-one {
    width: 370px;
  }

  .orbit-two {
    width: 290px;
  }

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

  .sets-section {
    grid-template-columns: 1fr;
  }

  .sets-intro {
    position: static;
    max-width: 650px;
  }

  .article-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 42px;
  }
}

@media (max-width: 720px) {
  body {
    background-size: 24px 24px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    min-height: 68px;
    padding: 0 18px;
  }

  .brand-mark {
    font-size: 20px;
  }

  .brand-name {
    font-size: 20px;
  }

  .site-nav {
    display: none;
  }

  .header-cta {
    min-height: 38px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    min-height: 0;
    padding: 60px 18px 72px;
  }

  .hero h1 {
    font-size: 64px;
  }

  .hero-lede {
    font-size: 28px;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 19px;
  }

  .hero-visual {
    width: 100%;
    min-height: 390px;
  }

  .visual-map,
  .orbit-one {
    right: 50%;
    width: min(92vw, 360px);
    transform: translateX(50%);
  }

  .orbit-one {
    transform: translateX(50%) scale(1.08);
  }

  .orbit-two {
    right: 20px;
    width: 250px;
  }

  .visual-caption {
    right: 10px;
    min-width: 190px;
  }

  .visual-caption span:first-child {
    font-size: 60px;
  }

  .trust-strip {
    grid-template-columns: 1fr 1fr;
    margin: 0 18px 85px;
  }

  .trust-strip div {
    min-height: 72px;
    padding: 14px 16px;
  }

  .trust-strip div:nth-child(1),
  .trust-strip div:nth-child(2) {
    border-bottom: 1px solid var(--ink);
  }

  .trust-strip b {
    font-size: 30px;
  }

  .catalog-section {
    padding: 0 18px 85px;
  }

  .section-intro {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-bottom: 38px;
  }

  .section-intro h2,
  .sets-intro h2,
  .about-section h2 {
    font-size: 43px;
  }

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

  .strategy-card {
    min-height: 175px;
  }

  .sets-section {
    gap: 42px;
    padding: 80px 18px;
  }

  .set-heading {
    grid-template-columns: 62px 1fr;
    min-height: 98px;
    padding: 14px 16px;
  }

  .set-number {
    font-size: 39px;
  }

  .set-heading h3 {
    font-size: 15px;
  }

  .set-list a {
    grid-template-columns: 92px 1fr auto;
    gap: 12px;
    padding: 12px 14px;
  }

  .set-list span {
    font-size: 16px;
  }

  .set-list small {
    font-size: 10px;
  }

  .about-section {
    grid-template-columns: 1fr;
    gap: 42px;
    padding: 80px 18px;
  }

  .about-stamp {
    width: 150px;
    font-size: 26px;
  }

  .site-footer {
    grid-template-columns: 1fr;
    padding: 42px 18px 32px;
  }

  .footer-links {
    flex-wrap: wrap;
  }

  .breadcrumbs {
    padding: 20px 18px;
  }

  .strategy-article {
    padding: 0 18px;
  }

  .article-heading {
    padding: 55px 0 62px;
  }

  .article-heading h1 {
    font-size: 62px;
  }

  .article-angle {
    font-size: 24px;
  }

  .article-lede {
    font-size: 16px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .article-aside {
    margin: 30px 0 0;
  }

  .article-aside p {
    margin: 17px 0 24px;
  }

  .article-body h2 {
    font-size: 34px;
  }

  .article-body section {
    padding: 45px 0;
  }

  .story-copy,
  .example-copy {
    grid-template-columns: 48px 1fr;
    gap: 16px;
  }

  .story-copy > span,
  .example-copy > span {
    width: 44px;
    font-size: 20px;
  }

  .story-copy p,
  .example-copy p {
    font-size: 16px;
  }

  .example-copy {
    padding: 20px 14px;
  }

  .boundary-section::before {
    position: static;
    display: inline-block;
    margin-bottom: 18px;
  }

  .related-links a {
    grid-template-columns: 1fr auto;
    gap: 5px 15px;
  }

  .related-links small {
    grid-column: 1 / -1;
  }

  .article-pager {
    grid-template-columns: 1fr;
    margin: 70px 18px 80px;
  }

  .article-pager a + a {
    align-items: flex-start;
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .not-found {
    min-height: 540px;
    padding: 90px 18px;
  }

  .not-found h1 {
    font-size: 57px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Classical scroll theme */
:root {
  --paper: #f2eee3;
  --paper-deep: #ddd5c4;
  --ink: #292824;
  --ink-soft: #5f5a50;
  --line: rgba(62, 55, 43, 0.24);
  --lime: #e5dfcf;
  --coral: #9f352d;
  --blue: #b8c7bd;
  --gold: #b79a64;
  --teal: #9eafa5;
  --white: #faf7ef;
  --radius: 2px;
  --shadow: 0 18px 45px rgba(56, 46, 32, 0.12);
}

body {
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(90, 75, 52, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, transparent 49.8%, rgba(90, 75, 52, 0.018) 50%, transparent 50.2%);
  background-size: 100% 9px, 160px 100%;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: 17px;
  line-height: 1.9;
}

body::selection {
  color: var(--white);
  background: var(--coral);
}

a:focus-visible,
button:focus-visible {
  outline-color: var(--coral);
}

.site-header {
  min-height: 92px;
  border-top: 3px double rgba(86, 72, 48, 0.42);
  border-bottom: 1px solid rgba(86, 72, 48, 0.42);
}

.brand {
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 48px;
  margin: 0;
  padding: 4px 2px;
  place-items: center;
  color: #f8eee2;
  background: var(--coral);
  border: 0;
  border-radius: 1px;
  font-family: "STKaiti", "KaiTi", "Kaiti SC", serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.05;
  writing-mode: vertical-rl;
}

.brand-name {
  font-family: Georgia, "Songti SC", serif;
  font-size: 22px;
  font-weight: 500;
}

.brand-dot {
  color: var(--coral);
}

.site-nav {
  gap: 42px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 15px;
  font-weight: 500;
}

.site-nav a::after {
  right: 50%;
  bottom: 18px;
  left: auto;
  width: 5px;
  height: 5px;
  background: var(--coral);
  border-radius: 50%;
  transform: translateX(50%) scale(0);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: translateX(50%) scale(1);
}

.header-cta {
  min-height: 40px;
  padding: 0 16px;
  color: var(--coral);
  border-color: var(--coral);
  border-radius: 1px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 14px;
  font-weight: 600;
}

.header-cta:hover {
  color: var(--white);
  background: var(--coral);
}

.hero {
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, 0.72fr);
  gap: 72px;
  min-height: 720px;
  padding-top: 82px;
  padding-bottom: 96px;
}

.eyebrow {
  color: #736952;
  font-family: "STKaiti", "KaiTi", "Kaiti SC", serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

.hero h1,
.catalog-section h2,
.sets-intro h2,
.about-section h2,
.article-heading h1,
.article-body h2,
.not-found h1 {
  font-family: "STKaiti", "KaiTi", "Kaiti SC", "Songti SC", serif;
  font-weight: 400;
}

.hero h1 {
  font-size: 112px;
  line-height: 1;
}

.hero-lede {
  margin-top: 34px;
  font-family: "STKaiti", "KaiTi", "Kaiti SC", serif;
  font-size: 40px;
  line-height: 1.45;
}

em {
  color: var(--coral);
}

.hero-description {
  max-width: 570px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 2;
}

.button {
  min-height: 50px;
  border-color: var(--coral);
  border-radius: 1px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 15px;
  font-weight: 600;
  transition: color 180ms ease, background 180ms ease;
}

.button:hover {
  color: var(--white);
  background: #7e2b25;
  box-shadow: none;
  transform: none;
}

.button-primary {
  color: var(--white);
  background: var(--coral);
}

.text-link {
  color: #6b4438;
  border-bottom-color: rgba(107, 68, 56, 0.45);
  font-family: "Songti SC", "STSong", serif;
  font-weight: 500;
}

.hero-visual {
  min-height: 550px;
}

.visual-orbit {
  display: none;
}

.visual-map {
  inset: 4px 0 auto auto;
  width: 410px;
  height: 520px;
  aspect-ratio: auto;
  overflow: hidden;
  background-color: #e8e0d0;
  background-image: linear-gradient(90deg, rgba(111, 91, 59, 0.05) 1px, transparent 1px);
  background-size: 24px 100%;
  border: 1px solid #9f8b68;
  border-radius: 1px;
  box-shadow: 0 24px 55px rgba(56, 46, 32, 0.16);
}

.visual-map::before {
  inset: 13px;
  border-color: rgba(106, 87, 58, 0.35);
  border-radius: 0;
}

.visual-map::after {
  position: absolute;
  top: 31px;
  right: 28px;
  width: 52px;
  height: 76px;
  border: 2px solid rgba(159, 53, 45, 0.76);
  content: "三十六计";
  color: rgba(159, 53, 45, 0.84);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 13px;
  line-height: 1.2;
  text-align: center;
  writing-mode: vertical-rl;
}

.visual-map path {
  stroke: rgba(54, 52, 47, 0.62);
  stroke-dasharray: 1 8;
  stroke-width: 2;
}

.visual-map circle {
  fill: var(--coral);
  stroke: #e8e0d0;
  stroke-width: 3;
}

.map-label {
  width: 62px;
  height: 35px;
  aspect-ratio: auto;
  color: #5d342c;
  background: rgba(242, 238, 227, 0.72);
  border: 1px solid rgba(159, 53, 45, 0.68);
  border-radius: 1px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 16px;
}

.visual-caption {
  right: -10px;
  bottom: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  min-width: 108px;
  padding: 14px 12px;
  color: #f7eee1;
  background: var(--coral);
  border: 0;
  box-shadow: none;
  text-align: center;
}

.visual-caption span:first-child {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 25px;
  line-height: 1.15;
}

.visual-caption span:last-child {
  font-family: "Songti SC", "STSong", serif;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.35;
}

.trust-strip {
  border-top: 1px solid rgba(86, 72, 48, 0.42);
  border-right: 0;
  border-bottom: 1px solid rgba(86, 72, 48, 0.42);
  border-left: 0;
  background: transparent;
}

.trust-strip div {
  border-right-color: rgba(86, 72, 48, 0.28);
}

.trust-strip b {
  color: var(--coral);
  font-family: "STKaiti", "KaiTi", serif;
  font-weight: 400;
}

.trust-strip span {
  color: var(--ink-soft);
  font-size: 13px;
}

.section-intro h2,
.sets-intro h2,
.about-section h2 {
  font-size: 56px;
  line-height: 1.25;
}

.section-intro > p,
.sets-intro > p,
.about-section > div > p:not(.eyebrow) {
  font-size: 17px;
  line-height: 2;
}

.strategy-grid {
  border-color: rgba(86, 72, 48, 0.42);
}

.strategy-card {
  min-height: 220px;
  background: rgba(250, 247, 239, 0.44);
  border-color: rgba(86, 72, 48, 0.42);
  transition: color 180ms ease, background 180ms ease;
}

.strategy-card::before {
  display: none;
}

.strategy-card:hover {
  color: #4f3029;
  background: var(--accent);
  box-shadow: inset 4px 0 0 var(--coral);
  transform: none;
}

.card-index {
  color: var(--coral);
  font-family: Georgia, serif;
}

.card-set {
  color: #776d5b;
  font-family: "STKaiti", "KaiTi", serif;
  font-weight: 400;
}

.strategy-card strong {
  font-family: "STKaiti", "KaiTi", "Kaiti SC", serif;
  font-size: 32px;
  font-weight: 400;
}

.card-angle {
  font-size: 14px;
  line-height: 1.75;
}

.card-arrow {
  color: var(--coral);
}

.tone-lime { --accent: #e8e2d4; }
.tone-coral { --accent: #e5d6cf; }
.tone-blue { --accent: #d8e0dc; }
.tone-gold { --accent: #e7ddc6; }
.tone-teal { --accent: #d5dfd8; }
.tone-ink { --accent: #d7d5cf; }

.sets-section,
.about-section {
  border-top-color: rgba(86, 72, 48, 0.42);
}

.set-block,
.sets-grid {
  border-color: rgba(86, 72, 48, 0.42);
}

.set-heading {
  background: var(--accent);
  border-bottom-color: rgba(86, 72, 48, 0.42);
}

.set-number {
  color: var(--coral);
  font-family: "STKaiti", "KaiTi", serif;
}

.set-heading h3,
.set-list span {
  font-family: "STKaiti", "KaiTi", "Kaiti SC", serif;
  font-weight: 400;
}

.set-list a {
  border-bottom-color: rgba(86, 72, 48, 0.18);
}

.set-list a:hover {
  padding-left: 22px;
  background: rgba(250, 247, 239, 0.72);
  box-shadow: inset 3px 0 0 var(--coral);
}

.about-stamp {
  width: 174px;
  color: #f8eee2;
  background: var(--coral);
  border: 2px solid #7c2a25;
  border-radius: 1px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 32px;
  line-height: 1.25;
  transform: rotate(-3deg);
}

.site-footer {
  border-top: 3px double rgba(86, 72, 48, 0.42);
}

.site-footer strong {
  font-family: "STKaiti", "KaiTi", serif;
  font-weight: 400;
}

.breadcrumbs {
  border-bottom-color: rgba(86, 72, 48, 0.3);
  font-family: "Songti SC", "STSong", serif;
}

.article-heading {
  padding-top: 88px;
  padding-bottom: 94px;
}

.article-kicker {
  font-family: "STKaiti", "KaiTi", serif;
  font-weight: 400;
}

.article-kicker span:first-child {
  color: #f8eee2;
  background: var(--coral);
  border-color: var(--coral);
}

.article-heading h1 {
  font-size: 92px;
}

.article-angle {
  color: var(--coral);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 30px;
}

.article-lede {
  max-width: 760px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 18px;
  line-height: 2;
}

.article-layout {
  border-top-color: rgba(86, 72, 48, 0.42);
}

.article-aside {
  color: var(--ink);
  background: rgba(250, 247, 239, 0.54);
  border: 1px solid rgba(86, 72, 48, 0.42);
  border-radius: 1px;
}

.aside-label {
  color: var(--coral);
  border-bottom-color: rgba(86, 72, 48, 0.28);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
}

.article-aside p {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 27px;
}

.article-aside a {
  color: #6e3a31;
  font-family: "Songti SC", "STSong", serif;
  font-weight: 500;
}

.article-body section {
  border-bottom-color: rgba(86, 72, 48, 0.26);
}

.article-body h2 {
  font-size: 40px;
}

.article-body section > p:last-child,
.article-body section > h2 + p,
.story-copy p,
.example-copy p {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 2.05;
}

.source-note {
  color: var(--ink) !important;
  background: transparent;
  border: 0;
  border-left: 4px solid var(--coral);
  border-radius: 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 18px !important;
}

.story-copy > span,
.example-copy > span {
  color: var(--coral);
  border-color: rgba(159, 53, 45, 0.68);
  border-radius: 1px;
  font-family: "STKaiti", "KaiTi", serif;
}

.example-copy {
  background: rgba(184, 199, 189, 0.25);
  border-top-color: rgba(86, 72, 48, 0.36);
  border-bottom-color: rgba(86, 72, 48, 0.36);
}

.example-copy > span {
  color: #f8eee2;
  background: #6e8175;
  border-color: #6e8175;
}

.boundary-section::before {
  color: #f8eee2;
  background: var(--coral);
  border-color: var(--coral);
  content: "慎用";
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 13px;
  font-weight: 400;
}

.boundary-note {
  background: rgba(159, 53, 45, 0.06);
  border-left-color: var(--coral);
}

.related-links,
.related-links a,
.article-pager {
  border-color: rgba(86, 72, 48, 0.42);
}

.related-links a:hover,
.article-pager a:hover {
  background: #e4ddce;
}

.related-links span,
.article-pager strong {
  font-family: "STKaiti", "KaiTi", serif;
  font-weight: 400;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr 350px;
  }

  .visual-map {
    width: 350px;
    height: 475px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
    background-size: 100% 8px, 120px 100%;
  }

  .site-header {
    min-height: 74px;
  }

  .brand-mark {
    width: 29px;
    height: 41px;
    font-size: 10px;
  }

  .brand-name {
    font-size: 19px;
  }

  .header-cta {
    padding: 0 12px;
    font-size: 13px;
  }

  .hero {
    gap: 52px;
    padding-top: 64px;
  }

  .hero h1 {
    font-size: 66px;
  }

  .hero-lede {
    font-size: 30px;
  }

  .hero-visual {
    min-height: 440px;
  }

  .visual-map {
    right: 50%;
    width: min(88vw, 340px);
    height: 420px;
    transform: translateX(50%);
  }

  .visual-caption {
    right: 6px;
  }

  .section-intro h2,
  .sets-intro h2,
  .about-section h2 {
    font-size: 44px;
  }

  .strategy-card {
    min-height: 185px;
  }

  .about-stamp {
    width: 126px;
    font-size: 25px;
  }

  .article-heading h1 {
    font-size: 61px;
  }

  .article-angle {
    font-size: 24px;
  }

  .article-body h2 {
    font-size: 34px;
  }
}