/* =========================================================
   小鸟棋牌 · 共享样式 /assets/site.css
   1 变量与重置 · 2 基础排版 · 3 通用组件 · 4 页头 · 5 页脚 · 6 响应式与动效降级
   ========================================================= */

/* ---------- 1 变量与重置 ---------- */
:root{
  --ink:#1E2A44;
  --indigo:#2D3E6B;
  --orange:#E76F3C;
  --orange-soft:#F9D9C7;
  --grass:#5B7F52;
  --cream:#F7F1E5;
  --paper:#FFFDF8;
  --amber:#D99A2B;
  --glass:rgba(255,255,255,.62);
  --grey:#8A8175;
  --night:#121927;
  --rule:rgba(30,42,68,.12);
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 22px 46px -34px rgba(30,42,68,.65);
  --font-display:"PingFang SC","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Songti SC","Source Han Serif SC","Noto Serif SC","Times New Roman",Georgia,serif;
  --font-ui:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gutter:clamp(18px,4vw,32px);
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding-left:1.2em}
img{max-width:100%;display:block}
button{font:inherit;color:inherit}
a{color:var(--indigo);text-underline-offset:.22em}
::selection{background:rgba(217,154,43,.35);color:var(--ink)}

:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:4px}
.header-topbar :focus-visible,
.site-footer :focus-visible{outline-color:var(--amber)}

/* ---------- 2 基础排版 ---------- */
body{
  background-color:var(--cream);
  background-image:
    radial-gradient(120% 70% at 100% 0%, rgba(249,217,199,.55) 0%, rgba(249,217,199,0) 62%),
    radial-gradient(90% 60% at 0% 100%, rgba(45,62,107,.09) 0%, rgba(45,62,107,0) 58%);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;line-height:1.24;color:var(--ink)}
h3,h4{font-weight:700}

#main-content{scroll-margin-top:112px}
#main-content:focus{outline:none}

/* ---------- 3 通用组件 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}

.section{padding:clamp(44px,6.4vw,88px) 0}
.section-head{display:flex;flex-direction:column;gap:14px;max-width:64ch;margin-bottom:clamp(22px,3vw,38px)}
.stack{display:flex;flex-direction:column;gap:clamp(16px,2.2vw,28px)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--orange);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--orange);display:block}

.display-title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(40px,6.4vw,86px);line-height:1.04;letter-spacing:-.035em;color:var(--ink);
}
.section-title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(25px,3.2vw,40px);line-height:1.18;letter-spacing:-.025em;color:var(--ink);
}
.lede{
  font-family:var(--font-body);font-size:clamp(17px,1.6vw,19px);
  line-height:1.85;color:#3A4460;max-width:58ch;
}
.prose{font-family:var(--font-body);font-size:17.5px;line-height:1.9;color:#333D57;max-width:66ch}
.prose > * + *{margin-top:1.05em}
.prose ul,.prose ol{display:grid;gap:.5em}
.prose h2,.prose h3{margin-top:1.7em}
.prose strong{color:var(--ink)}

.mono{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--grey);font-variant-numeric:tabular-nums;
}

.breadcrumbs{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  list-style:none;padding:0;margin:0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--grey);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"／";color:rgba(138,129,117,.7)}
.breadcrumbs a{color:var(--indigo);text-decoration:none;border-bottom:1px solid rgba(45,62,107,.28);transition:color .2s ease,border-color .2s ease}
.breadcrumbs a:hover{color:var(--orange);border-color:var(--orange)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-ui);font-size:15px;font-weight:700;letter-spacing:.01em;
  text-decoration:none;cursor:pointer;
  transition:transform .18s ease, box-shadow .22s ease, background-color .22s ease, color .22s ease, border-color .22s ease;
}
.btn--primary{
  background:linear-gradient(116deg,#E9B75A 0%,var(--amber) 58%,#C8871F 100%);
  color:var(--ink);
  box-shadow:0 16px 30px -20px rgba(217,154,43,.95),inset 0 0 0 1px rgba(30,42,68,.16);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 20px 34px -18px rgba(217,154,43,.95)}
.btn--outline{
  background:rgba(255,255,255,.55);
  border-color:rgba(45,62,107,.32);
  color:var(--indigo);
}
.btn--outline:hover{border-color:var(--orange);color:var(--orange);background:rgba(255,255,255,.85)}
.btn-group{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

.grid{display:grid;gap:clamp(18px,2.6vw,32px)}
.grid--split{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start}
.grid--cards{grid-template-columns:repeat(auto-fit,minmax(248px,1fr))}

.panel{
  background:var(--paper);
  border:1px solid var(--rule);
  border-radius:var(--radius);
  padding:clamp(20px,2.6vw,32px);
  box-shadow:var(--shadow);
}
.panel--glass{
  background:var(--glass);
  border-color:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
}
.panel--accent{
  background:linear-gradient(158deg,rgba(249,217,199,.92) 0%,rgba(253,242,230,.96) 62%,rgba(247,241,229,.98) 100%);
  border-color:rgba(231,111,60,.34);
}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:4px 10px;border-radius:999px;
  background:rgba(91,127,82,.12);color:#3E5C37;border:1px solid rgba(91,127,82,.36);
}
.chip--amber{background:rgba(217,154,43,.16);color:#7A5407;border-color:rgba(217,154,43,.55)}
.chip--ink{background:rgba(45,62,107,.1);color:var(--indigo);border-color:rgba(45,62,107,.28)}

.info-bar{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;line-height:1.9;
  color:var(--indigo);
  background:rgba(45,62,107,.07);
  border-left:3px solid var(--amber);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:11px 15px;
}

.frame{
  position:relative;
  padding:clamp(22px,3.4vw,48px);
  border:1px solid rgba(30,42,68,.16);
  border-radius:24px;
  background:
    linear-gradient(155deg,rgba(255,255,255,.8) 0%,rgba(249,217,199,.58) 56%,rgba(247,241,229,.94) 100%);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.frame::before{
  content:"";position:absolute;inset:9px;border-radius:17px;
  border:1px dashed rgba(231,111,60,.34);pointer-events:none;
}
.frame::after{
  content:"";position:absolute;top:0;left:0;right:0;height:8px;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(45,62,107,.34) 0 1px,transparent 1px 18px);
}

.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(249,217,199,.95) 0%,rgba(45,62,107,.2) 100%);
  border:1px solid rgba(30,42,68,.1);
}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--cream);background:linear-gradient(0deg,rgba(18,25,39,.78),rgba(18,25,39,0));
}

.timeline{list-style:none;margin:0;padding:0;position:relative}
.timeline::before{
  content:"";position:absolute;left:5px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,var(--orange),rgba(45,62,107,.22));
}
.timeline__item{position:relative;padding:0 0 26px 34px}
.timeline__marker{
  position:absolute;left:0;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--cream);border:2px solid var(--orange);
}
.timeline__item:last-child{padding-bottom:0}

.checklist{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.checklist__item{display:flex;gap:10px;align-items:flex-start;font-family:var(--font-ui);font-size:15px;line-height:1.7}
.checklist__mark{
  flex:0 0 auto;width:18px;height:18px;margin-top:3px;border-radius:5px;
  border:1px solid rgba(91,127,82,.55);background:rgba(91,127,82,.14);
  position:relative;
}
.checklist__mark::after{
  content:"";position:absolute;left:4px;top:4px;width:8px;height:8px;border-radius:2px;
  background:var(--grass);
}

/* ---------- 4 页头 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-180%);
  padding:11px 18px;border-radius:10px;
  background:var(--ink);color:var(--cream);
  font-family:var(--font-ui);font-size:14px;font-weight:600;text-decoration:none;
  box-shadow:var(--shadow);
  transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--cream);
  border-bottom:1px solid rgba(231,111,60,.26);
  box-shadow:0 18px 34px -30px rgba(30,42,68,.85);
}

.scroll-progress{
  position:absolute;left:0;right:0;top:0;height:3px;
  background:rgba(30,42,68,.1);
  z-index:5;pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--orange) 0%,var(--amber) 60%,#E9B75A 100%);
}

.header-topbar{
  background:linear-gradient(102deg,#121927 0%,#1E2A44 52%,#2D3E6B 100%);
  color:var(--cream);
  border-bottom:1px solid rgba(217,154,43,.42);
}
.topbar-inner{
  max-width:var(--maxw);margin:0 auto;
  padding:9px var(--gutter);
  min-height:56px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;
}
.brandline{
  display:flex;align-items:center;gap:9px;margin:0;
  font-family:var(--font-ui);font-size:13px;letter-spacing:.06em;
  color:rgba(247,241,229,.84);
}
.brandline::before{
  content:"";width:7px;height:7px;border-radius:50%;flex:0 0 auto;
  background:var(--orange);box-shadow:0 0 0 3px rgba(231,111,60,.22);
}
.topbar-tools{display:flex;flex-wrap:wrap;align-items:center;gap:8px}

.version-chip{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;
  padding:5px 11px;border-radius:999px;
  border:1px solid rgba(217,154,43,.68);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:#F3D9A6;background:rgba(217,154,43,.1);
  font-variant-numeric:tabular-nums;
}
.version-chip::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 32%,rgba(255,255,255,.5) 50%,transparent 68%);
  transform:translateX(-130%);
  animation:chip-sweep 7s ease-in-out infinite;
}
@keyframes chip-sweep{
  0%,68%{transform:translateX(-130%)}
  84%,100%{transform:translateX(130%)}
}

.topbar-link{
  display:inline-flex;align-items:center;
  padding:6px 13px;border-radius:999px;
  border:1px solid rgba(247,241,229,.24);
  color:rgba(247,241,229,.9);text-decoration:none;
  font-family:var(--font-ui);font-size:13px;font-weight:600;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.topbar-link:hover{background:rgba(255,255,255,.1);border-color:rgba(231,111,60,.75);color:#fff}
.topbar-link--strong{
  background:linear-gradient(116deg,#E9B75A,var(--amber));
  border-color:transparent;color:var(--ink);
}
.topbar-link--strong:hover{background:linear-gradient(116deg,#F0C577,#E0A63A);color:var(--ink)}

.header-main{
  position:relative;
  background:linear-gradient(180deg,#FCF8EF 0%,#F7F1E5 60%,rgba(249,217,199,.62) 100%);
}
.header-main::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(231,111,60,.45) 0 1px,transparent 1px 16px);
}
.header-inner{
  position:relative;
  max-width:var(--maxw);margin:0 auto;
  padding:13px var(--gutter) 17px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}

.brand{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--ink);
  flex:0 0 auto;
}
.brand-mark{
  position:relative;flex:0 0 auto;
  width:42px;height:42px;
  border-radius:15px 15px 17px 17px;
  background:radial-gradient(circle at 32% 22%,#F9D9C7 0%,#E76F3C 58%,#BF5127 100%);
  box-shadow:inset 0 0 0 1px rgba(30,42,68,.2),0 10px 20px -14px rgba(231,111,60,.95);
}
.brand-mark__wing{
  position:absolute;left:9px;top:12px;
  width:20px;height:12px;
  background:var(--cream);
  border-radius:64% 36% 58% 42%;
  transform:rotate(-18deg);
  opacity:.94;
}
.brand-mark__wing::after{
  content:"";position:absolute;right:1px;top:3px;
  width:3px;height:3px;border-radius:50%;background:var(--ink);
}
.brand-mark--footer{width:36px;height:36px;border-radius:13px 13px 15px 15px}
.brand-mark--footer .brand-mark__wing{left:8px;top:11px;width:17px;height:10px}

.brand-text{display:block}
.brand-name{
  display:block;
  font-family:var(--font-display);font-weight:900;
  font-size:21px;line-height:1.2;letter-spacing:-.02em;
}
.brand-sub{
  display:block;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--grey);
}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 15px;border-radius:999px;
  border:1px solid rgba(45,62,107,.28);
  background:rgba(255,255,255,.66);
  color:var(--indigo);cursor:pointer;
  font-family:var(--font-ui);font-size:14px;font-weight:700;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:20px}
.nav-toggle__bars span{
  display:block;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .24s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"]{border-color:rgba(217,154,43,.7);background:rgba(249,217,199,.85)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__label{line-height:1}

.primary-nav{flex:1 1 auto;display:flex;justify-content:flex-end}
.nav-list{
  display:flex;align-items:center;gap:2px;
  list-style:none;margin:0;padding:0;
  counter-reset:navitem;
}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:7px;
  padding:10px 14px;border-radius:11px;
  color:var(--indigo);text-decoration:none;
  font-family:var(--font-ui);font-size:15px;font-weight:600;letter-spacing:.01em;
  counter-increment:navitem;
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-link::before{
  content:"0" counter(navitem);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;
  color:rgba(138,129,117,.9);
  transition:color .2s ease;
}
.nav-link:hover{color:var(--orange);background:rgba(255,255,255,.7)}
.nav-link:hover::before{color:var(--orange)}
.nav-link[aria-current="page"]{
  color:var(--ink);background:rgba(255,255,255,.9);
  box-shadow:inset 0 0 0 1px rgba(217,154,43,.6);
}
.nav-link[aria-current="page"]::before{color:var(--amber)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--orange),var(--amber));
}

/* ---------- 5 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(40px,6vw,72px) 0 0;
  background:var(--night);
  color:rgba(247,241,229,.86);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(247,241,229,.055) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(247,241,229,.055) 0 1px,transparent 1px 48px),
    radial-gradient(70% 60% at 92% 0%,rgba(231,111,60,.22) 0%,rgba(231,111,60,0) 68%);
}
.footer-grid{
  position:relative;
  max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1.1fr) minmax(0,.8fr);
  gap:clamp(26px,4vw,56px);
}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.brand--footer{color:var(--cream)}
.brand--footer .brand-name{color:var(--cream);font-size:20px}
.brand--footer .brand-sub{color:rgba(247,241,229,.55)}
.footer-tagline{
  font-family:var(--font-body);font-size:15px;line-height:1.8;
  color:rgba(247,241,229,.76);max-width:30ch;
}
.footer-region{
  display:inline-flex;align-items:center;gap:7px;
  align-self:flex-start;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:rgba(217,154,43,.95);
  border:1px solid rgba(217,154,43,.4);border-radius:999px;
  padding:3px 11px;
}
.footer-col{min-width:0}
.footer-heading{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;
  color:rgba(217,154,43,.95);
  margin-bottom:14px;
}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.footer-link{
  color:rgba(247,241,229,.84);text-decoration:none;
  font-family:var(--font-ui);font-size:15px;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover{color:#F4C978;border-color:rgba(217,154,43,.7)}
.footer-contact{
  list-style:none;margin:0;padding:0;display:grid;gap:9px;
  font-family:var(--font-ui);font-size:14px;line-height:1.75;
  color:rgba(247,241,229,.86);
}
.footer-contact li{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline}
.footer-contact .mono{
  min-width:38px;font-size:10.5px;letter-spacing:.16em;
  color:rgba(217,154,43,.95);
}
.footer-note{
  margin-top:16px;
  font-family:var(--font-ui);font-size:12.5px;line-height:1.85;
  color:rgba(247,241,229,.58);max-width:44ch;
}
.footer-bottom{
  position:relative;
  max-width:var(--maxw);margin:clamp(28px,4vw,46px) auto 0;
  padding:18px var(--gutter) 28px;
  border-top:1px solid rgba(247,241,229,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:rgba(247,241,229,.62);
}
.footer-copy,.footer-icp{margin:0}
.footer-icp{color:rgba(217,154,43,.96)}

/* ---------- 6 响应式与动效降级 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .62s ease,transform .62s cubic-bezier(.2,.7,.3,1);
}
[data-reveal].is-revealed{opacity:1;transform:none}

@media (min-width:901px){
  .header-topbar{max-height:64px;overflow:hidden;transition:max-height .3s ease,opacity .24s ease}
  .site-header.is-condensed .header-topbar{max-height:0;opacity:0}
}

@media (max-width:1024px){
  .grid--split{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:900px){
  #main-content{scroll-margin-top:96px}
  .header-inner{flex-wrap:wrap;gap:12px;padding-bottom:16px}
  .nav-toggle{display:inline-flex;margin-left:auto}

  [data-nav]{
    position:absolute;left:0;right:0;top:100%;
    display:block;
    padding:8px var(--gutter) 20px;
    background:linear-gradient(180deg,#FCF8EF 0%,#F7F1E5 70%,rgba(249,217,199,.85) 100%);
    border-bottom:1px solid rgba(231,111,60,.34);
    box-shadow:0 30px 42px -30px rgba(30,42,68,.85);
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:max-height .32s ease,opacity .24s ease,visibility .24s ease;
  }
  [data-nav][data-open]{
    max-height:74vh;overflow-y:auto;
    opacity:1;visibility:visible;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{
    padding:14px 12px;border-radius:12px;
    font-size:16px;justify-content:flex-start;
  }
  .nav-link[aria-current="page"]{box-shadow:inset 0 0 0 1px rgba(217,154,43,.7)}
  .nav-link[aria-current="page"]::after{display:none}
}

@media (max-width:720px){
  body{font-size:16.5px;line-height:1.8}
  .topbar-inner{min-height:auto;padding-top:10px;padding-bottom:10px}
  .brandline{font-size:12px;letter-spacing:.03em;order:1;width:100%}
  .topbar-tools{order:2;width:100%;justify-content:flex-start}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .btn{width:100%}
  .btn-group .btn{width:100%}
  .media{aspect-ratio:4 / 3}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .version-chip::after{display:none}
  [data-nav]{max-height:none}
}