:root {
  color-scheme: light;
  --canvas: #eff5f9;
  --surface: #ffffff;
  --ink: #101820;
  --muted: #556575;
  --navy: #1e2d42;
  --navy-deep: #121d2b;
  --line: #d7e2ea;
  --cyan: #11b6c5;
  --cyan-dark: #087f8b;
  --mint: #78f2a0;
  --shell: 1160px;
  --radius-lg: 32px;
  --radius-md: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: clip; }

body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--canvas);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img { display: block; max-width: 100%; height: auto; }

.shell {
  width: min(var(--shell), calc(100% - 40px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  color: white;
  background: var(--navy-deep);
  border-radius: 10px;
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(215, 226, 234, .8);
  background: rgba(239, 245, 249, .9);
  backdrop-filter: blur(18px);
}

.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  border-radius: 13px;
  box-shadow: 0 8px 22px rgba(18, 29, 43, .15);
}

.brand span { display: grid; line-height: 1.25; }
.brand strong { font-size: 1rem; letter-spacing: -.02em; }
.brand small { color: var(--muted); font-size: .78rem; }

nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

nav a {
  color: #3c4d5e;
  font-size: .92rem;
  font-weight: 700;
  text-decoration: none;
}

nav a:hover, nav a:focus-visible { color: var(--cyan-dark); }

.nav-download {
  padding: 10px 16px;
  color: white;
  background: var(--navy-deep);
  border-radius: 999px;
}

nav .nav-download:hover, nav .nav-download:focus-visible { color: white; background: #263c59; }

.hero {
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  align-items: center;
  gap: clamp(42px, 7vw, 96px);
  padding-block: 72px 84px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan-dark);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .14em;
}

h1, h2, p { text-wrap: pretty; }

h1 {
  margin: 0;
  font-size: clamp(3.4rem, 6.5vw, 6.25rem);
  line-height: .96;
  letter-spacing: -.065em;
}

h1 span { color: #3f5263; }

.hero-lede {
  max-width: 690px;
  margin: 28px 0 0;
  color: #3c4d5e;
  font-size: clamp(1.12rem, 2vw, 1.34rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease, border-color .2s ease;
}

.button:hover { transform: translateY(-2px); }
.button:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid rgba(17, 182, 197, .4); outline-offset: 3px; }
.button-primary { color: white; background: var(--navy-deep); box-shadow: 0 14px 30px rgba(18, 29, 43, .16); }
.button-primary:hover { background: #263c59; }
.button-secondary { color: var(--navy-deep); border-color: #bccbd5; background: rgba(255, 255, 255, .5); }
.button-secondary:hover { border-color: #8498a8; background: white; }

.microcopy { margin: 13px 0 0; color: #687888; font-size: .88rem; }

.hero-points {
  display: grid;
  gap: 0;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.hero-points li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.hero-points strong { font-size: .94rem; }
.hero-points span { color: var(--muted); font-size: .92rem; }

.hero-visual {
  position: relative;
  display: grid;
  justify-items: center;
  padding: 30px 24px;
  isolation: isolate;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 8% 2% 2%;
  z-index: -2;
  border-radius: 48% 48% 42% 42%;
  background: linear-gradient(145deg, #1e2d42, #304663);
  transform: rotate(3deg);
}

.visual-glow {
  position: absolute;
  width: 72%;
  aspect-ratio: 1;
  top: 10%;
  z-index: -1;
  border-radius: 50%;
  background: rgba(17, 182, 197, .3);
  filter: blur(60px);
}

.hero-visual img {
  width: min(100%, 390px);
  border-radius: 26px;
  box-shadow: 0 30px 70px rgba(10, 20, 32, .32);
}

.proof-strip {
  color: white;
  background: var(--navy-deep);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  min-height: 152px;
}

.proof-grid div {
  display: grid;
  place-content: center;
  gap: 2px;
  padding: 24px;
  border-left: 1px solid rgba(255, 255, 255, .12);
}

.proof-grid div:last-child { border-right: 1px solid rgba(255, 255, 255, .12); }
.proof-grid strong { color: var(--mint); font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1; letter-spacing: -.04em; }
.proof-grid span { color: #c3d0db; font-size: .9rem; }

.intro {
  max-width: 790px;
  padding-top: 126px;
  padding-bottom: 86px;
  text-align: center;
}

.intro h2, .feature h2, .study-only h2, .faq h2, .final-cta h2 {
  margin: 0;
  font-size: clamp(2.35rem, 4.8vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -.055em;
}

.intro > p:last-child {
  max-width: 680px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 1.14rem;
}

.feature {
  display: grid;
  grid-template-columns: minmax(300px, .82fr) minmax(0, 1.18fr);
  align-items: center;
  gap: clamp(54px, 10vw, 132px);
  padding-block: 76px;
}

.feature-reverse .feature-media { order: 2; }
.feature-reverse .feature-copy { order: 1; }

.feature-media {
  position: relative;
  display: grid;
  justify-items: center;
  padding: 34px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #dfeaf1;
}

.feature-media::after {
  content: "";
  position: absolute;
  inset: auto -20% -25% 20%;
  height: 54%;
  background: rgba(17, 182, 197, .14);
  border-radius: 50%;
  filter: blur(42px);
}

.feature-media img {
  width: min(100%, 360px);
  z-index: 1;
  border-radius: 20px;
  box-shadow: 0 24px 50px rgba(30, 45, 66, .2);
}

.feature-copy { max-width: 600px; }

.feature-number {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  border: 1px solid #a8bbc8;
  border-radius: 50%;
  color: var(--cyan-dark);
  font-size: .86rem;
  font-weight: 850;
}

.feature-copy > p:not(.eyebrow) {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.check-list {
  display: grid;
  gap: 0;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.check-list li {
  position: relative;
  padding: 14px 0 14px 28px;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cyan-dark);
  font-weight: 900;
}

.study-only {
  margin-top: 110px;
  color: white;
  background: var(--navy-deep);
}

.study-grid {
  min-height: 520px;
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  align-items: center;
  gap: 80px;
  padding-block: 90px;
}

.study-only .eyebrow { color: var(--mint); }

.boundary-list {
  border-top: 1px solid rgba(255, 255, 255, .18);
}

.boundary-list p {
  margin: 0;
  padding: 17px 0;
  color: #dce6ee;
  border-bottom: 1px solid rgba(255, 255, 255, .18);
  font-weight: 700;
}

.editorial-preview { padding-block: 122px 34px; }
.editorial-preview-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 36px;
}
.editorial-preview-heading h2, .more-articles h2 {
  max-width: 700px;
  margin: 0;
  font-size: clamp(2.2rem, 4.3vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.055em;
}
.editorial-preview-heading p:not(.eyebrow) { max-width: 680px; margin: 18px 0 0; color: var(--muted); font-size: 1.08rem; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.localized-article-grid { grid-template-columns: minmax(0, 470px); }
.article-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  overflow: hidden;
}
.article-card-visual { min-height: 220px; display: flex; flex-direction: column; justify-content: space-between; gap: 20px; padding: 22px; color: white; background: #19222b; text-decoration: none; }
.article-card:nth-child(2) .article-card-visual { background: #173239; }
.article-card:nth-child(3) .article-card-visual { background: #273043; }
.article-card-visual:hover .playing-card, .article-card-visual:focus-visible .playing-card { transform: translateY(-4px); }
.article-card-visual-top { display: flex; justify-content: space-between; gap: 12px; color: #afc2cf; font-size: .68rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.article-card-visual-top span:last-child { text-align: right; }
.article-card-visual-cards { display: flex; align-items: center; gap: 7px; }
.article-card-visual-cards .playing-card { width: 49px; height: 68px; font-size: 1.1rem; transition: transform .2s ease; }
.article-card-visual-arrow { margin: 0 5px; color: #94e6df; font-size: 1.45rem; }
.article-card-visual-word { color: #e9f3f3; font-size: 1.8rem; font-weight: 800; letter-spacing: -.05em; }
.article-card-visual-bottom { font-size: 1rem; font-weight: 750; letter-spacing: -.025em; }
.article-card-copy { display: flex; flex: 1; flex-direction: column; padding: 26px 26px 30px; }
.article-card-kicker { margin: 0 0 13px; color: var(--cyan-dark); font-size: .71rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.article-card h2, .article-card h3 { margin: 0; font-size: clamp(1.32rem, 1.75vw, 1.62rem); line-height: 1.22; letter-spacing: -.035em; }
.article-card h2 a, .article-card h3 a { text-decoration: none; }
.article-card h2 a:hover, .article-card h2 a:focus-visible, .article-card h3 a:hover, .article-card h3 a:focus-visible { color: var(--cyan-dark); }
.article-card-copy > p:not(.article-card-kicker) { margin: 16px 0 24px; color: var(--muted); font-size: .95rem; }
.article-card-link { display: inline-flex; align-items: center; gap: 8px; margin-top: auto; color: var(--cyan-dark); font-size: .92rem; font-weight: 850; text-decoration: none; }
.article-card-link:hover { text-decoration: underline; }

.editorial-main { padding-block: 28px 124px; }
.editorial-hero { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: clamp(36px, 5vw, 74px); padding-block: 64px 88px; border-bottom: 1px solid var(--line); }
.editorial-hero h1 { margin: 0; font-size: clamp(3rem, 5.6vw, 5.15rem); line-height: .99; letter-spacing: -.065em; }
.editorial-hero h1 span { color: var(--cyan-dark); }
.editorial-hero-copy > p:not(.eyebrow) { max-width: 490px; margin: 26px 0 22px; color: var(--muted); font-size: 1.12rem; line-height: 1.55; }
.editorial-hero-media, .article-cover { min-width: 0; margin: 0; }
.editorial-hero-media img, .article-cover img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 16px; background: #19222b; }
.editorial-hero-media figcaption, .article-cover figcaption { margin-top: 9px; color: var(--muted); font-size: .72rem; line-height: 1.35; }
.editorial-collection { padding-top: 70px; scroll-margin-top: 100px; }
.editorial-collection-heading { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 28px; }
.editorial-collection-heading h2 { margin: 0; font-size: clamp(2.2rem, 4vw, 3.8rem); line-height: 1.05; letter-spacing: -.055em; }
.editorial-collection-heading > p { max-width: 310px; margin: 0 0 5px; color: var(--muted); font-size: .95rem; }
.editorial-method { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; align-items: start; margin-top: 70px; padding: 26px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.editorial-method-number { color: var(--cyan-dark); font-size: .75rem; font-weight: 800; letter-spacing: .12em; }
.editorial-method p { max-width: 700px; margin: 0; color: var(--muted); font-size: .95rem; }
.editorial-method strong { color: var(--ink); }
.breadcrumbs { justify-content: flex-start; gap: 10px; color: var(--muted); font-size: .9rem; }
.breadcrumbs a { color: var(--cyan-dark); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.article-header { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); align-items: center; gap: clamp(36px, 5vw, 70px); padding-block: 70px 74px; border-bottom: 1px solid var(--line); margin-bottom: 58px; }
.article-header h1 { margin: 0; font-size: clamp(2.75rem, 4.5vw, 4.4rem); line-height: 1.05; letter-spacing: -.06em; }
.article-lead { max-width: 800px; margin: 27px 0 0; color: #354b5d; font-size: clamp(1.13rem, 1.8vw, 1.25rem); line-height: 1.55; }
.article-meta { margin: 26px 0 0; color: var(--muted); font-size: .88rem; }
.article-layout { display: grid; grid-template-columns: minmax(0, 740px) minmax(250px, 1fr); align-items: start; gap: clamp(40px, 6vw, 88px); }
.article-body { min-width: 0; }
.article-body h2 { margin: 52px 0 18px; font-size: clamp(1.7rem, 2.6vw, 2.25rem); line-height: 1.16; letter-spacing: -.04em; scroll-margin-top: 100px; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { margin: 0 0 19px; color: #354657; font-size: 1.05rem; line-height: 1.78; }
.hand-snapshot { margin: 27px 0 34px; padding: 28px; border-radius: 20px; color: white; background: #152431; }
.hand-snapshot-label { margin: 0 !important; color: #8fdfdc !important; font-size: .69rem !important; font-weight: 800; letter-spacing: .12em; line-height: 1.35 !important; text-transform: uppercase; }
.hand-snapshot-heading h3 { margin: 8px 0 0; font-size: clamp(1.48rem, 2.5vw, 2rem); line-height: 1.1; letter-spacing: -.035em; }
.hand-snapshot-players { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 25px; }
.hand-player { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-width: 0; padding: 15px; border: 1px solid #3e5562; border-radius: 12px; }
.hand-player--winner { border-color: #75c9b0; }
.hand-player > div:first-child { min-width: 0; }
.hand-player strong, .hand-player > div:first-child span { display: block; }
.hand-player strong { font-size: .92rem; line-height: 1.2; }
.hand-player > div:first-child span { margin-top: 5px; color: #b4c9d3; font-size: .75rem; line-height: 1.35; }
.hand-player-cards { display: flex; flex: 0 0 auto; gap: 5px; }
.playing-card { display: inline-flex; flex: 0 0 auto; flex-direction: column; align-items: flex-start; justify-content: space-between; width: 42px; height: 58px; padding: 6px 7px; border: 1px solid #d9e0e1; border-radius: 6px; color: #16202a; background: #fffefa; font-size: 1rem; font-weight: 850; line-height: 1; box-shadow: 0 2px 0 rgba(0, 0, 0, .1); }
.playing-card span:last-child { align-self: flex-end; font-size: 1.2em; }
.playing-card--red { color: #c83a3d; }
.hand-snapshot-board { margin-top: 24px; padding-top: 21px; border-top: 1px solid #3e5562; }
.hand-board-streets { display: flex; flex-wrap: wrap; gap: 20px 28px; margin-top: 12px; }
.hand-board-street > span { display: block; margin-bottom: 8px; color: #b4c9d3; font-size: .72rem; font-weight: 750; letter-spacing: .09em; text-transform: uppercase; }
.hand-board-street > div { display: flex; gap: 5px; }
.hand-snapshot-board--empty p:last-child { margin: 12px 0 0; color: #d4e2e8; font-size: .93rem; line-height: 1.5; }
.hand-action-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; margin: 24px 0 0; padding: 0; list-style: none; }
.hand-action-list li { display: grid; grid-template-columns: 24px 1fr; gap: 2px 8px; padding: 13px 0; border-top: 1px solid #3e5562; font-size: .83rem; line-height: 1.38; }
.hand-action-index { grid-row: span 2; color: #8fdfdc; font-size: .71rem; font-weight: 800; }
.hand-action-list strong { color: white; }
.hand-action-list li > span:last-child { color: #c5d4dd; }
.hand-snapshot figcaption { margin-top: 15px; padding-top: 14px; border-top: 1px solid #3e5562; color: #b4c9d3; font-size: .76rem; line-height: 1.5; }
.article-sources { margin-top: 55px; padding: 30px; border-radius: var(--radius-md); background: white; border: 1px solid var(--line); }
.article-sources h2 { margin: 0 0 14px; font-size: 1.5rem; }
.article-sources p { font-size: .93rem; }
.article-sources ul { margin: 0; padding-left: 20px; }
.article-sources li { margin: 8px 0; overflow-wrap: anywhere; }
.article-sources a { color: var(--cyan-dark); font-weight: 700; }
.article-sidebar { position: sticky; top: 105px; padding: 28px; border-radius: var(--radius-md); color: white; background: var(--navy-deep); }
.article-sidebar .eyebrow { color: var(--mint); }
.article-sidebar h2 { margin: 0; font-size: 1.55rem; line-height: 1.17; letter-spacing: -.035em; }
.article-sidebar p:not(.eyebrow) { color: #d9e5ec; font-size: .95rem; }
.article-sidebar .button { width: 100%; margin-block: 10px 14px; background: white; color: var(--navy-deep); text-align: center; font-size: .9rem; }
.article-sidebar small { display: block; color: #b6c8d4; line-height: 1.5; }
.more-articles { padding-top: 100px; }
.more-articles .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 28px; }

.faq {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: clamp(44px, 9vw, 120px);
  padding-block: 126px;
}

.faq-list { border-top: 1px solid #b9cad5; }

details { border-bottom: 1px solid #b9cad5; }

summary {
  position: relative;
  padding: 24px 44px 24px 0;
  cursor: pointer;
  font-size: 1.06rem;
  font-weight: 800;
  list-style: none;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  color: var(--cyan-dark);
  font-size: 1.5rem;
  font-weight: 500;
}

details[open] summary::after { content: "−"; }

details p {
  margin: -4px 0 24px;
  color: var(--muted);
}

.final-cta {
  padding: 28px 0;
  color: white;
  background: var(--cyan-dark);
}

.final-cta-inner {
  min-height: 330px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.final-cta .eyebrow { color: #bff7f3; }
.final-cta p:last-child { margin: 18px 0 0; color: #d8f8f6; font-size: 1.08rem; }
.button-light { flex: 0 0 auto; color: var(--navy-deep); background: white; box-shadow: 0 16px 36px rgba(8, 71, 77, .25); }

footer { color: #c4d1dc; background: var(--navy-deep); }

.footer-grid {
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.footer-brand strong { color: white; }
.footer-brand small { color: #96a9b9; }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-links a { color: #d7e2e9; font-size: .9rem; font-weight: 700; text-decoration: none; }
.footer-links a:hover { color: var(--mint); }

.language-bar { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 9px; padding-block: 0 12px; }
.language-bar a { padding: 5px 9px; border-radius: 6px; color: var(--muted); font-size: .78rem; font-weight: 750; text-decoration: none; }
.language-bar a:hover, .language-bar a:focus-visible, .language-bar a[aria-current="page"] { color: var(--cyan-dark); background: #e8f7f6; }
.locale-zh-hans .hero h1 { font-size: clamp(2.9rem, 6.1vw, 4.8rem); }

.stats-page { background: #f3f7f8; }
.stats-main { padding-block: 72px 96px; }
.stats-main h1 { margin: 9px 0 12px; font-size: clamp(2.6rem, 6vw, 4.5rem); letter-spacing: -.055em; }
.stats-subtitle, .stats-note { max-width: 760px; color: var(--muted); }
.stats-period { display: flex; flex-wrap: wrap; gap: 8px; margin-block: 28px 32px; }
.stats-period a { padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; background: white; color: var(--navy-deep); font-size: .86rem; font-weight: 750; text-decoration: none; }
.stats-period a:hover, .stats-period a:focus-visible { border-color: var(--cyan-dark); color: var(--cyan-dark); }
.stats-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 24px; }
.stats-summary section { padding: 25px; border: 1px solid var(--line); border-radius: var(--radius-md); background: white; }
.stats-summary span { display: block; color: var(--muted); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.stats-summary strong { display: block; margin-top: 12px; font-size: 2.6rem; line-height: 1; }
.stats-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-md); background: white; }
.stats-table-wrap table { width: 100%; border-collapse: collapse; min-width: 700px; }
.stats-table-wrap caption { padding: 18px 20px; text-align: left; font-weight: 800; }
.stats-table-wrap th, .stats-table-wrap td { padding: 13px 16px; border-top: 1px solid var(--line); text-align: right; white-space: nowrap; font-size: .86rem; }
.stats-table-wrap th:first-child, .stats-table-wrap td:first-child { text-align: left; }
.stats-table-wrap thead { background: #eaf1f3; }
.stats-table-wrap tbody tr:hover { background: #f5faf9; }
.stats-placement-table { margin-top: 24px; }
.stats-note { margin-top: 20px; font-size: .86rem; line-height: 1.6; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 58px; }
  .hero-copy { max-width: 760px; }
  .hero-visual img { width: min(70vw, 380px); }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-grid div:nth-child(3) { border-top: 1px solid rgba(255, 255, 255, .12); }
  .proof-grid div:nth-child(4) { border-top: 1px solid rgba(255, 255, 255, .12); }
  .feature, .feature-reverse { grid-template-columns: 1fr; gap: 54px; }
  .feature-media, .feature-reverse .feature-media { order: 1; }
  .feature-copy, .feature-reverse .feature-copy { order: 2; max-width: 720px; }
  .feature-media img { width: min(68vw, 360px); }
  .study-grid { grid-template-columns: 1fr; gap: 46px; }
  .faq { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .localized-article-grid { grid-template-columns: minmax(0, 470px); }
  .editorial-hero, .article-header { grid-template-columns: 1fr; }
  .editorial-hero-copy { max-width: 740px; }
  .editorial-hero-media { max-width: 740px; }
  .article-cover { max-width: 740px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; max-width: 700px; }
}

@media (max-width: 640px) {
  .shell { width: min(var(--shell), calc(100% - 28px)); }
  .site-header { position: static; }
  .nav-shell { min-height: 70px; }
  .site-header nav a:not(.nav-download) { display: none; }
  .nav-download { padding: 9px 13px; font-size: .84rem; }
  .brand small { display: none; }
  .language-bar { justify-content: center; padding-block: 7px 12px; }
  .locale-zh-hans .hero h1 { font-size: clamp(2.6rem, 10vw, 3.25rem); }
  .hero { min-height: auto; padding-block: 54px 64px; }
  h1 { font-size: clamp(3.15rem, 16vw, 4.8rem); }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-points li { grid-template-columns: 1fr; gap: 2px; }
  .hero-visual { padding-inline: 8px; }
  .hero-visual::before { inset-inline: 0; }
  .hero-visual img { width: min(86vw, 360px); }
  .proof-grid div { padding: 22px 14px; }
  .proof-grid span { font-size: .78rem; }
  .intro { padding-block: 90px 54px; }
  .feature { padding-block: 52px; }
  .feature-media { padding: 22px 14px; border-radius: 24px; }
  .feature-media img { width: min(78vw, 340px); }
  .study-only { margin-top: 68px; }
  .study-grid { min-height: auto; padding-block: 76px; }
  .faq { padding-block: 90px; }
  .final-cta-inner { min-height: 380px; flex-direction: column; align-items: flex-start; justify-content: center; }
  .footer-grid { padding-block: 38px; flex-direction: column; align-items: flex-start; }
  .editorial-preview { padding-block: 84px 10px; }
  .editorial-preview-heading { display: block; }
  .editorial-preview-heading > .article-card-link { margin-top: 20px; }
  .article-grid, .more-articles .article-grid { grid-template-columns: 1fr; }
  .localized-article-grid { grid-template-columns: 1fr; }
  .article-card-visual { min-height: 185px; }
  .editorial-main { padding-block: 20px 80px; }
  .editorial-hero { gap: 30px; padding-block: 36px 56px; }
  .editorial-hero h1 { font-size: clamp(2.8rem, 12vw, 4.5rem); }
  .editorial-collection { padding-top: 54px; }
  .editorial-collection-heading { display: block; }
  .editorial-collection-heading > p { margin-top: 16px; }
  .editorial-method { grid-template-columns: 1fr; gap: 10px; margin-top: 54px; }
  .article-header { gap: 30px; padding-block: 45px 42px; margin-bottom: 42px; }
  .article-header h1 { font-size: clamp(2.4rem, 9.5vw, 3.7rem); }
  .article-body h2 { margin-top: 40px; }
  .hand-snapshot { padding: 18px; }
  .hand-snapshot-players, .hand-action-list { grid-template-columns: 1fr; }
  .hand-board-streets { gap: 16px; }
  .article-sources { padding: 24px; }
  .more-articles { padding-top: 75px; }
  .stats-main { padding-block: 46px 70px; }
  .stats-summary { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
  .article-card-visual-cards .playing-card { transition: none; }
}