/* Tier0 Design System — Public site
   Visual lock: tier0.app/pricing · tier0.app/product/tier0-builder · docs.tier0.app
   Type: IBM Plex Sans / Mono only — no Poppins
*/
:root{
  --bg:#ffffff;
  --paper:#ffffff;
  --mist:#f7f8f4;
  --mist-2:#f9faf6;
  --line:#e2e6de;
  --line-strong:#d6ddcf;
  --ink:#050b14;
  --text:rgba(5,11,20,.72);
  --text-2:rgba(5,11,20,.6);
  --muted:#707780;
  --accent:#b2ed1d;
  --accent-deep:#73b200;
  --accent-soft:#f0fbd2;
  --accent-soft-2:#f7fbe8;
  --radius:4px;
  --radius-card:4px;
  --container:1120px;
  --sans:"IBM Plex Sans","IBM Plex Sans SC","PingFang SC","Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  color:var(--ink);
  font-family:var(--sans);
  font-size:15px;
  font-weight:400;
  line-height:1.55;
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:var(--ink)}
.page{min-height:100svh}

/* —— Nav (pricing / builder) —— */
.site-nav{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:14px clamp(20px,4vw,40px);
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.site-nav__brand{display:flex;align-items:center;gap:12px;min-width:0}
.site-nav__brand img{height:22px;width:auto}
.site-nav__brand span{
  font:400 11px/1 var(--mono);letter-spacing:.12em;
  color:var(--muted);text-transform:uppercase;
}
.site-nav__links{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
.site-nav__links a{color:var(--text);font-size:14px;font-weight:400}
.site-nav__links a:hover,.site-nav__links a.is-active{color:var(--ink)}
.site-nav__cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:36px;padding:0 14px;border-radius:var(--radius);
  background:var(--accent);color:var(--ink);font-size:13px;font-weight:400;
}
.site-nav__cta:hover{opacity:.7;background:var(--accent);color:var(--ink)}
.site-nav__cta--lime{background:var(--accent);color:var(--ink)}
.site-nav__cta--lime:hover{opacity:.7;background:var(--accent);color:var(--ink)}
.site-nav__cta--ink{
  background:var(--ink);color:#fff;
}
.site-nav__cta--ink:hover{opacity:.7;background:var(--ink);color:#fff}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:44px;padding:0 18px;border-radius:var(--radius);
  border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:400;letter-spacing:0;
}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--ink);color:#fff}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#1c1f1e}
.btn-outline{background:var(--paper);color:var(--ink);border-color:var(--line-strong)}
.btn-outline:hover{background:var(--mist)}

.shell{
  max-width:var(--container);
  margin:0 auto;
  padding:0 clamp(20px,4vw,40px);
}

/* —— Hero: ASCII field + surface entries —— */
.hero{
  position:relative;overflow:hidden;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  min-height:auto;
}
.hero__ascii{
  position:absolute;inset:0;width:100%;height:100%;
  display:block;pointer-events:none;opacity:.42;
  mask-image:linear-gradient(90deg,transparent 0%,#000 18%,#000 82%,transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 18%,#000 82%,transparent 100%);
}
.hero__inner{
  position:relative;z-index:1;
  display:flex;flex-direction:column;justify-content:flex-start;
  padding:56px 0 64px;
}
.hero--entries .eyebrow{margin-bottom:14px}
.hero--entries h1.section-heading{
  max-width:none;
  white-space:nowrap;
  font-size:clamp(36px,4.5vw,52px);
  font-weight:500;line-height:1.1;letter-spacing:-.035em;
  margin-bottom:12px;
}
.hero--entries .section-copy{
  font-size:16px;max-width:none;white-space:nowrap;margin-bottom:36px;color:var(--text);
}
.hero--entries .entry-grid{gap:16px}
.hero--entries .show-card{
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
}
.eyebrow,
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent-deep);
  font:400 12px/1 var(--mono);letter-spacing:.12em;
  text-transform:uppercase;margin-bottom:18px;
}
.section-label::before,
.eyebrow::before{
  content:"■";
  color:var(--ink);
  font-size:10px;letter-spacing:0;
}
.hero h1{
  max-width:16ch;
  font-size:clamp(40px,5.6vw,64px);
  font-weight:500;line-height:1.05;letter-spacing:-.04em;
  color:var(--ink);margin-bottom:20px;font-synthesis:none;
}
.hero h1 .kw,
.hero h1 em{
  font-style:normal;color:var(--accent-deep);
}
.hero h1 .bracket{color:var(--ink);font-weight:400}
.hero p{
  max-width:42ch;color:var(--text-2);font-size:clamp(15px,1.4vw,17px);
  font-weight:400;line-height:1.6;margin-bottom:28px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px}
.hero__meta{
  position:absolute;right:clamp(20px,4vw,40px);bottom:20px;z-index:2;
  display:flex;align-items:center;gap:8px;
  color:var(--muted);font:400 11px/1 var(--mono);
  letter-spacing:.12em;text-transform:uppercase;
}
.hero__meta i{width:6px;height:6px;border-radius:0;background:var(--accent)}

.divider{
  max-width:var(--container);height:1px;margin:0 auto;
  background:var(--line);border:0;
}
.section{padding:72px 0}
.section-heading{
  max-width:18ch;font-size:clamp(32px,4vw,48px);
  font-weight:500;line-height:1.1;letter-spacing:-.035em;
  color:var(--ink);margin-bottom:16px;
}
.section-heading .kw{color:var(--accent-deep);font-style:normal}
.section-copy{
  max-width:none;color:var(--text);font-size:16px;font-weight:400;
  line-height:1.6;margin-bottom:36px;white-space:nowrap;
}
.section-copy a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px}
#tokens .section-heading,
#tokens .section-copy{
  max-width:none;
  white-space:nowrap;
}

.section-entries{
  padding:80px 0 88px;background:var(--mist);
  border-bottom:1px solid var(--line);
}
.section-entries .section-heading{max-width:14ch;font-size:clamp(36px,4.5vw,52px)}
.section-entries .section-copy{font-size:16px;max-width:44ch;margin-bottom:40px}
.section-entries .entry-grid{gap:16px}

.entry-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
}

/* Surface cards — thin border panels, no soft SaaS shadow */
.show-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .15s ease, background .15s ease;
}
.show-card:hover{
  border-color:var(--ink);
  background:#fff;
}
.show-card__preview{
  position:relative;aspect-ratio:16/10;
  background:var(--mist-2);border-bottom:1px solid var(--line);
  overflow:hidden;padding:0;
}
.show-card__shot{
  width:100%;height:100%;object-fit:cover;object-position:top left;
  display:block;
}
.show-card__tag{
  position:absolute;right:12px;bottom:12px;z-index:2;
  display:inline-flex;align-items:center;
  min-height:24px;padding:0 10px;border-radius:var(--radius);
  background:var(--ink);color:#fff;
  font:400 11px/1 var(--mono);letter-spacing:.06em;
}
.show-card__meta{
  display:flex;justify-content:space-between;gap:12px;
  padding:10px 16px;border-bottom:1px solid var(--line);
  color:var(--muted);font:400 11px/1.3 var(--mono);
}
.show-card__body{padding:18px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.show-card__link{
  color:var(--muted);font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;
}
.show-card__body h3{
  font-size:20px;font-weight:500;letter-spacing:-.025em;line-height:1.25;color:var(--ink);
}
.show-card__body p{color:var(--text);font-size:14px;line-height:1.55;flex:1}
.show-card__cta{
  display:flex;align-items:center;justify-content:center;
  margin-top:10px;min-height:40px;padding:0 14px;
  border-radius:var(--radius);background:var(--accent);color:var(--ink);
  font:400 13px/1 var(--sans);
  transition:background .15s ease,color .15s ease;
}
/* Hover: near-ink（对齐 tier0.app 主操作），不用浑浊的加深绿 */
.show-card:hover .show-card__cta{background:var(--ink);color:#fff}
.entry{
  display:flex;flex-direction:column;gap:14px;
  min-height:200px;padding:28px 24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color .15s ease;
}
.entry:hover{border-color:var(--line-strong);background:var(--accent-soft-2)}
.entry__label{
  color:var(--accent-deep);font:400 12px/1 var(--mono);
  letter-spacing:.12em;text-transform:uppercase;
}
.entry h3{
  font-size:clamp(22px,2.4vw,28px);font-weight:500;line-height:1.12;
  letter-spacing:-.03em;color:var(--ink);
}
.entry p{color:var(--text);font-size:14px;line-height:1.55;flex:1;max-width:28ch}
.entry__go{margin-top:8px;color:var(--ink);font:400 13px/1 var(--mono);letter-spacing:.1em}

.intro__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* —— Invoke / how-to-call panel (under surface hero) —— */
.invoke{
  margin-top:28px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--mist);
  overflow:hidden;
}
.invoke__head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px 20px;
  padding:18px 20px 14px;border-bottom:1px solid var(--line);background:#fff;
}
.invoke__title{
  font-size:clamp(20px,2.2vw,26px);font-weight:500;letter-spacing:-.03em;line-height:1.2;
}
.invoke__meta{
  font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);
}
.invoke__facts{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border-bottom:1px solid var(--line);background:#fff;
}
.invoke__fact{
  padding:14px 16px;border-right:1px solid var(--line);
}
.invoke__fact:last-child{border-right:0}
.invoke__fact dt{
  font:400 10px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  color:var(--accent-deep);margin-bottom:6px;
}
.invoke__fact dd{font-size:13px;line-height:1.45;color:var(--ink)}
.invoke__body{padding:20px 22px 22px;display:grid;gap:20px}
.invoke__steps{
  margin:0;padding:0;list-style:none;display:grid;gap:0;
}
.invoke__steps li{
  display:grid;grid-template-columns:28px minmax(0,1fr);gap:14px 16px;align-items:start;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.invoke__steps li:first-child{padding-top:4px}
.invoke__steps li:last-child{border-bottom:0;padding-bottom:4px}
.invoke__steps b{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:4px;background:var(--ink);color:#fff;
  font:400 11px/1 var(--mono);
}
.invoke__steps h3{font-size:14px;font-weight:500;margin:2px 0 6px}
.invoke__step-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin:2px 0 6px;
}
.invoke__step-head h3{margin:0}
.invoke__intake-btn{
  min-height:32px;padding:0 12px;font-size:13px;flex-shrink:0;
}
.invoke__steps p{
  font-size:13px;line-height:1.55;color:var(--text);margin:0;
  max-width:none;width:100%;
}
.invoke__steps code,.invoke__fact code{
  font-family:var(--mono);font-size:12px;color:var(--ink);
}
.invoke__prompt{
  margin:0;padding:14px 16px;border:1px solid var(--line);border-radius:4px;
  background:#fff;font:400 12px/1.55 var(--mono);color:var(--ink);white-space:pre-wrap;
  overflow-x:auto;max-width:none;width:100%;
}
.invoke__prompt::before{
  content:attr(data-label);
  display:block;margin-bottom:8px;
  font:400 10px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
}
.invoke__links{
  display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;
  font-size:13px;
}
.invoke__links a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px}
.invoke__links span{color:var(--muted);font:400 11px/1 var(--mono)}

@media (max-width:900px){
  .invoke__facts{grid-template-columns:1fr 1fr}
  .invoke__fact:nth-child(2n){border-right:0}
  .invoke__fact:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media (max-width:560px){
  .invoke__facts{grid-template-columns:1fr}
  .invoke__fact{border-right:0;border-bottom:1px solid var(--line)}
  .invoke__fact:last-child{border-bottom:0}
}

.section-kicker{
  color:var(--accent-deep);font:400 12px/1 var(--mono);
  letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px;
}
.section-kicker::before{content:"■ ";color:var(--ink)}

.comp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.comp-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:#fff;overflow:hidden;
}
.comp-card__stage{
  padding:20px;background:var(--mist);border-bottom:1px solid var(--line);
  min-height:120px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.comp-card__meta{padding:14px 16px}
.comp-card__meta h3{font-size:15px;font-weight:500;margin-bottom:6px}
.comp-card__meta p{font-size:13px;color:var(--text);line-height:1.5}
.comp-card__meta code{font:400 11px/1.4 var(--mono);color:var(--muted)}

.demo-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:36px;padding:0 16px;border-radius:4px;border:0;
  font:400 14px/1 var(--sans);cursor:default;
}
.demo-btn--ink{background:#050B14;color:#fff}
.demo-btn--lime{background:var(--accent);color:var(--ink)}
.demo-btn--ghost{background:transparent;color:#050B14;border:1px solid var(--line-strong)}
.demo-tag{
  display:inline-flex;align-items:center;min-height:24px;padding:0 8px;
  border-radius:4px;font:500 12px/1 var(--sans);
}
.demo-tag--soft{background:var(--accent-soft);color:var(--accent-deep)}
.demo-tag--ink{background:#050B14;color:#fff}
.demo-table{
  width:100%;border-collapse:collapse;font-size:13px;background:#fff;
  border:1px solid var(--line);border-radius:4px;overflow:hidden;
}
.demo-table th,.demo-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
.demo-table th{background:#fff;font-weight:500;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.06em}
.demo-table tr:hover td{background:var(--accent-soft)}
.demo-table tr:last-child td{border-bottom:0}
.demo-input{
  min-height:36px;padding:0 12px;border:1px solid var(--line-strong);border-radius:4px;
  background:#fff;font:400 14px/36px var(--sans);color:#050B14;min-width:160px;
}
.demo-card-ui{
  flex:1 1 0;min-width:0;width:100%;padding:14px;background:#fff;
  border:1px solid var(--line);border-radius:4px;
  box-sizing:border-box;align-self:stretch;
}
.demo-card-ui strong{display:block;font-size:14px;margin-bottom:4px}
.demo-card-ui span{font-size:12px;color:var(--muted)}
.demo-card-ui-row{
  display:grid !important;
  grid-template-columns:1fr 1fr;
  align-items:stretch;
  flex-wrap:nowrap;
}

.howto{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:8px;
}
.howto-step{
  padding:20px 18px;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
}
.howto-step b{
  display:block;margin-bottom:10px;
  color:var(--accent-deep);font:400 12px/1 var(--mono);letter-spacing:.12em;
}
.howto-step h3{font-size:16px;font-weight:500;margin-bottom:8px}
.howto-step p{font-size:13px;color:var(--text);line-height:1.5}
.howto-step a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px}

.live-frame{
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;background:#0b121a;aspect-ratio:16/9;position:relative;
}
.live-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#fff}
.live-frame__bar{
  display:flex;align-items:center;gap:8px;padding:10px 12px;
  background:#111827;border-bottom:1px solid #1f2937;
  font:400 11px/1 var(--mono);color:#9ca3af;
}
.live-frame__bar i{width:8px;height:8px;border-radius:0;background:#374151}
.live-frame__bar i:nth-child(1){background:#ef4444}
.live-frame__bar i:nth-child(2){background:#eab308}
.live-frame__bar i:nth-child(3){background:#22c55e}

/* In-page demo tabs (ZH / EN / Gallery) */
.preview-stage{margin-top:8px}
.preview-tabs{
  display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;
}
.preview-tab{
  appearance:none;cursor:pointer;
  min-height:36px;padding:0 14px;border-radius:var(--radius);
  border:1px solid var(--line-strong);background:#fff;color:var(--ink);
  font:400 13px/1 var(--sans);
}
.preview-tab:hover{background:var(--mist)}
.preview-tab.is-active{
  background:var(--ink);color:#fff;border-color:var(--ink);
}
.preview-pane[hidden]{display:none !important}
.preview-pane .live-frame{
  aspect-ratio:auto;
  min-height:min(68vh,720px);
  height:min(68vh,720px);
}
.preview-pane__note{
  margin-top:12px;color:var(--muted);font:400 12px/1.45 var(--mono);
}

.web-hero-demo{
  width:100%;padding:28px;background:#fff;border:1px solid var(--line);border-radius:4px;
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.15fr);
  gap:28px;align-items:center;
}
.web-hero-demo__copy{min-width:0}
.web-hero-demo__visual{
  min-width:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;
  background:var(--mist-2);aspect-ratio:1243/851;
}
.web-hero-demo__visual img{
  width:100%;height:100%;object-fit:cover;object-position:left top;display:block;
}
.web-hero-demo .eyebrow-demo{
  font:400 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent-deep);margin-bottom:14px;
}
.web-hero-demo .eyebrow-demo::before{content:"■ ";color:var(--ink)}
.web-hero-demo h3{
  font-family:var(--sans);font-weight:500;font-size:clamp(26px,2.8vw,36px);
  letter-spacing:-.035em;line-height:1.12;max-width:16ch;margin-bottom:14px;color:var(--ink);
}
.web-hero-demo h3 em{font-style:normal;color:var(--accent-deep)}
.web-hero-demo h3 .bracket{font-weight:400;color:var(--ink)}
.web-hero-demo p{max-width:40ch;color:var(--text);font-size:15px;line-height:1.6;margin-bottom:22px}
.web-hero-demo .callout{
  margin-top:18px;padding:12px 14px;border-left:3px solid var(--accent);
  background:var(--accent-soft-2);font-size:13px;color:var(--text);max-width:48ch;
}
@media (max-width:900px){
  .web-hero-demo{grid-template-columns:1fr;padding:22px}
  .web-hero-demo h3{max-width:none}
}

.ppt-slide-demo{
  width:100%;aspect-ratio:16/9;background:#06101B;color:#fff;
  padding:8% 7%;display:flex;flex-direction:column;justify-content:space-between;
  border-radius:4px;
}
.ppt-slide-demo .k{font:400 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;opacity:.55}
.ppt-slide-demo h3{
  font-family:Tektur,var(--sans);font-weight:400;
  font-size:clamp(28px,3.2vw,44px);letter-spacing:-.02em;line-height:1.05;max-width:12ch;
}
.ppt-slide-demo h3 em{font-style:normal;color:#B2ED1D}
.ppt-slide-demo .foot{display:flex;justify-content:space-between;font:400 11px/1 var(--mono);opacity:.4;border-top:1px solid rgba(255,255,255,.12);padding-top:12px}

.ds-browser{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  min-height:560px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.ds-nav{
  display:flex;flex-direction:column;gap:2px;
  padding:16px 12px;
  border-right:1px solid var(--line);
  background:var(--mist);
}
.ds-nav__label{
  margin:12px 10px 6px;
  font:400 10px/1 var(--mono);
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
}
.ds-nav__label:first-child{margin-top:2px}
.ds-nav button{
  display:flex;flex-direction:column;align-items:flex-start;gap:3px;
  width:100%;padding:10px 12px;border:0;border-radius:4px;
  background:transparent;color:var(--ink);text-align:left;cursor:pointer;
  font:400 14px/1.25 var(--sans);
}
.ds-nav button small{
  font:400 11px/1.3 var(--mono);color:var(--muted);letter-spacing:.02em;
}
.ds-nav button:hover{background:rgba(5,11,20,.04)}
.ds-nav button.is-active{
  background:#fff;box-shadow:inset 0 0 0 1px var(--line);
}
.ds-nav button.is-active small{color:var(--accent-deep)}
.ds-panels{
  min-width:0;padding:28px 28px 36px;
  max-height:min(78vh,840px);overflow:auto;
}
.ds-panel[hidden]{display:none !important}
.ds-panel__head{margin-bottom:22px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.ds-panel__head h2{
  font-size:clamp(24px,2.8vw,32px);font-weight:500;
  letter-spacing:-.03em;line-height:1.15;color:var(--ink);
}
.ds-panel__head p{margin-top:8px;max-width:58ch;color:var(--text);font-size:15px;line-height:1.55}
.ds-panel__head .path{
  margin-top:10px;font:400 12px/1.4 var(--mono);color:var(--muted);
}

.token-group{margin-bottom:28px}
.token-group h3{
  font-size:13px;font-weight:500;margin-bottom:10px;color:var(--ink);
  padding-bottom:8px;border-bottom:1px solid var(--line);
}
.token-row{
  display:grid;grid-template-columns:auto 1fr auto;
  gap:10px;align-items:center;
  padding:9px 0;border-bottom:1px solid #f0f0f0;font-size:13px;
}
.token-row:last-child{border-bottom:0}
.token-swatch{
  width:18px;height:18px;border-radius:4px;border:1px solid rgba(5,11,20,.08);
  flex-shrink:0;
}
.token-row code{font:400 12px/1.3 var(--mono);color:var(--ink)}
.token-row span{font:400 12px/1.3 var(--mono);color:var(--muted);text-align:right}
.token-row.is-text{grid-template-columns:1fr auto}
.token-row.is-text code{word-break:break-word}
.token-cols-2{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;
}

.rule-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:8px}
.rule{
  padding:16px;border:1px solid var(--line);border-radius:4px;background:var(--mist);
}
.rule h3{font-size:13px;font-weight:500;margin-bottom:8px}
.rule ul{padding-left:1.1em;color:var(--text);font-size:13px;line-height:1.55}
.rule li{margin:.35em 0}
.rule code{font-family:var(--mono);font-size:12px}

.type-row{
  display:grid;grid-template-columns:140px minmax(0,1fr);
  gap:16px;align-items:center;
  padding:16px 0;border-bottom:1px solid #f0f0f0;
}
.type-meta{font:400 12px/1.4 var(--mono);color:var(--muted)}
.type-sample{color:var(--ink)}
.type-sample.is-display{font-size:clamp(28px,3vw,40px);font-weight:500;letter-spacing:-.03em;line-height:1.1}
.type-sample.is-mono{font:400 14px/1.4 var(--mono)}

.mini{
  height:100%;border:1px solid var(--line);border-radius:4px;background:#fff;
  padding:14px 16px;display:flex;flex-direction:column;gap:10px;
}
.mini--dark{background:#06101B;border-color:#1a2430;color:#fff}
.mini--green{background:var(--accent-soft);border-color:#d4e89a}
.mini__bar{display:flex;justify-content:space-between;align-items:center;gap:8px}
.mini__dot{width:8px;height:8px;border-radius:0;background:var(--accent)}
.mini__logo{font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;opacity:.7}
.mini__title{font-size:clamp(18px,1.8vw,24px);font-weight:500;letter-spacing:-.03em;line-height:1.15;max-width:16ch}
.mini__row{display:flex;gap:8px;margin-top:auto}
.mini__chip{height:8px;border-radius:0;background:#e8e8ea;flex:1}
.mini__chip.is-on{background:var(--accent)}
.mini--dark .mini__chip{background:rgba(255,255,255,.12)}
.mini--dark .mini__chip.is-on{background:var(--accent)}
.mini__btn{
  align-self:flex-start;margin-top:auto;
  min-height:28px;padding:0 12px;border-radius:4px;
  background:var(--accent);color:var(--ink);font:400 11px/28px var(--mono);
}
.mini--dark .mini__btn{background:var(--accent);color:var(--ink)}
.scene-preview{aspect-ratio:16/9;margin-bottom:18px;max-width:420px}
.scene-preview .mini{min-height:160px}

.md-body{max-width:none;width:100%;color:var(--text)}
.md-body h1,.md-body h2,.md-body h3{color:var(--ink);font-weight:500;letter-spacing:-.02em}
.md-body h1{font-size:22px;font-weight:500;margin-bottom:.6em}
.md-body h2{margin-top:1.5em;padding-top:.75em;border-top:1px solid var(--line);font-size:18px;font-weight:500}
.md-body h2:first-child,.md-body h1 + h2{margin-top:.75em;padding-top:0;border-top:0}
/* foundations 拼接的 --- 勿成粗黑线；章节已有 h2 border-top */
.md-body hr{display:none}
.md-body h3{margin-top:1.1em;font-size:15px;font-weight:500}
.md-body p,.md-body li{line-height:1.65;margin:.45em 0;font-size:14px}
.md-body a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px}
.md-body table{width:100%;border-collapse:collapse;font-size:12px;margin:1em 0}
.md-body th,.md-body td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.md-body th{background:var(--mist);font-weight:500}
.md-body code,.md-body pre{font-family:var(--mono);font-size:12px}
.md-body pre{padding:14px;background:var(--mist);border:1px solid var(--line);overflow:auto}
.md-body ul,.md-body ol{
  margin:.5em 0;padding-left:1.6em;
  list-style-position:outside;
}
.md-body ol{padding-left:1.85em}
.md-body blockquote{
  margin:1em 0;padding:12px 16px;border-left:3px solid var(--accent);
  background:var(--mist);color:var(--text);
}

.page-hero-lite{padding:48px 0 24px}
.page-hero-lite .eyebrow{margin-bottom:14px}
.page-hero-lite h1{
  max-width:16ch;font-size:clamp(36px,4.5vw,52px);
  font-weight:500;line-height:1.08;letter-spacing:-.04em;color:var(--ink);
}
.page-hero-lite > p{margin-top:14px;max-width:48ch;color:var(--text);font-size:16px;line-height:1.6}

.frame-block{
  border:1px solid var(--line);border-radius:4px;background:#0b121a;
  min-height:480px;position:relative;overflow:hidden;
}
.frame-block iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.frame-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.code-block{
  margin:0;padding:16px 18px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);
  font:400 12px/1.55 var(--mono);overflow:auto;white-space:pre-wrap;color:var(--ink);
}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;font-size:13px;color:var(--text);
}
.chip b{color:var(--ink);font-weight:500}

.site-footer{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:28px clamp(20px,4vw,40px);
  border-top:1px solid var(--line);
  color:var(--muted);font:400 12px/1.4 var(--mono);letter-spacing:.02em;
  background:var(--mist);
}
.site-footer a:hover{color:var(--ink)}

@media (max-width:960px){
  .entry-grid,.token-cols-2,.rule-grid,.comp-grid,.howto{grid-template-columns:1fr}
  .ds-browser{grid-template-columns:1fr}
  .ds-nav{
    border-right:0;border-bottom:1px solid var(--line);
    flex-direction:row;flex-wrap:wrap;gap:6px;padding:12px;
  }
  .ds-nav__label{width:100%;margin:8px 4px 2px}
  .ds-nav button{width:auto;padding:8px 12px}
  .ds-panels{max-height:none;padding:20px 16px 28px}
  .type-row{grid-template-columns:1fr}
  .site-nav__links a:not(.site-nav__cta){display:none}
  .hero{min-height:auto}
  .hero__inner{padding:48px 0 40px}
  .hero__ascii{opacity:.28;mask-image:none;-webkit-mask-image:none}
  .hero--entries h1.section-heading,
  .hero--entries .section-copy,
  #tokens .section-heading,
  #tokens .section-copy,
  .section-copy{white-space:normal}
  .section-entries{padding:64px 0}
}