/* ============================================================
   安装游艺 · 共享站点样式 /assets/site.css
   01 reset · 02 变量 · 03 排版 · 04 布局 · 05 头部 · 06 页脚
   07 组件 · 08 工具类 · 09 响应式 · 10 无障碍
   ============================================================ */

/* ---------- 01 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
main{display:block}

/* ---------- 02 变量 ---------- */
:root{
  --ink-purple:#2B1B3D;
  --night:#14101A;
  --paper:#F4EFE6;
  --sand:#E8D5B5;
  --gold:#C9A227;
  --gold-hi:#F1D27A;
  --stone-blue:#3E6B8A;
  --rock:#6F6A63;
  --moss:#5F6F52;
  --clay:#A65E3F;

  --on-dark:#EDE6DA;
  --on-light:#241631;

  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --bar-h:56px;
  --dock-h:58px;
  --rail-w:88px;
  --wrap:1280px;
  --gutter:clamp(18px,4vw,48px);
  --radius:8px;
  --hair:1px solid rgba(201,162,39,.28);
  --hair-soft:1px solid rgba(201,162,39,.16);
  --ease:170ms cubic-bezier(.4,.2,.2,1);
}
@media (min-width:1080px){:root{--bar-h:64px}}

/* ---------- 03 排版 ---------- */
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--on-dark);
  background:var(--ink-purple);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--serif);font-weight:800;letter-spacing:.04em;line-height:1.18;color:inherit}
h1{font-size:clamp(34px,5.4vw,64px);line-height:1.14}
h2{font-size:clamp(25px,3.4vw,44px)}
h3{font-size:clamp(19px,2vw,26px);line-height:1.34}
p{max-width:68ch}
strong{font-weight:700;color:var(--gold-hi)}
::selection{background:rgba(201,162,39,.35);color:#fff}

/* ---------- 04 布局 ---------- */
.wrap{width:min(var(--wrap),100% - var(--gutter)*2);margin-inline:auto}
#main-content{scroll-margin-top:calc(var(--bar-h) + 14px)}
.section{padding-block:clamp(44px,6.4vw,96px);position:relative}
.section--portal{background:var(--ink-purple);color:var(--on-dark)}
.section--night{background:var(--night);color:var(--on-dark)}
.section--paper{background:var(--paper);color:var(--on-light)}
.section--sand{background:var(--sand);color:var(--on-light)}
.section--paper .text-muted,.section--sand .text-muted{color:rgba(43,27,61,.68)}
.section--paper .section-head__lead,.section--sand .section-head__lead{color:rgba(43,27,61,.7)}
body.page--paper{background:var(--paper);color:var(--on-light)}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

/* ---------- 05 头部 ---------- */
.skip-link{
  position:fixed;left:12px;top:-90px;z-index:200;
  padding:10px 16px;border-radius:6px;
  background:var(--gold);color:#1A1222;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,#221533 0%,#2B1B3D 100%);
  color:var(--on-dark);
  border-bottom:var(--hair);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 16px 34px -26px rgba(0,0,0,.95)}
.scroll-meter{position:absolute;left:0;right:0;bottom:-1px;height:1px;background:rgba(244,239,230,.14);pointer-events:none}
.scroll-meter__fill{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--gold) 0%,var(--gold-hi) 100%);transition:width .12s linear}

.command-bar{
  display:flex;align-items:center;gap:12px;
  width:min(var(--wrap),100%);margin-inline:auto;
  height:var(--bar-h);padding-inline:var(--gutter);
}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;color:var(--paper)}
.brand__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:30px;height:30px;border-radius:50%;
  border:1px solid var(--gold);color:var(--gold-hi);
  font-family:var(--serif);font-size:14px;font-weight:700;
  box-shadow:inset 0 0 12px rgba(201,162,39,.22),0 0 0 3px rgba(201,162,39,.07);
  transition:box-shadow var(--ease),color var(--ease);
}
.brand:hover .brand__mark{box-shadow:inset 0 0 16px rgba(241,210,122,.4),0 0 0 3px rgba(241,210,122,.16)}
.brand__text{display:flex;flex-direction:column;line-height:1.24;min-width:0}
.brand__name{font-family:var(--serif);font-weight:800;font-size:16px;letter-spacing:.18em;color:#F6F1E6;white-space:nowrap}
.brand__line{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:rgba(232,213,181,.62);white-space:nowrap}
.command-bar__note{
  display:none;
  margin:0 0 0 10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  color:rgba(232,213,181,.48);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.command-bar__tools{margin-left:auto;display:flex;align-items:center;gap:8px}
.command-link{
  display:none;
  padding:6px 11px;border-radius:6px;
  border:1px solid rgba(201,162,39,.3);
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;
  color:var(--sand);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.command-link:hover,.command-link:focus-visible{color:var(--gold-hi);border-color:var(--gold);background:rgba(201,162,39,.12)}
.command-link--gold{background:rgba(201,162,39,.16);border-color:rgba(201,162,39,.6);color:var(--gold-hi)}
.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:6px;
  border:1px solid rgba(201,162,39,.45);
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  color:var(--sand);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.nav-toggle:hover{color:var(--gold-hi);border-color:var(--gold)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:7px}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;
  transition:transform .2s ease,top .2s ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:7px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:3.5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:3.5px;transform:rotate(-45deg)}

/* 导航：移动端抽屉 */
.site-nav{
  position:fixed;left:0;right:0;
  top:var(--bar-h);
  bottom:calc(var(--dock-h) + env(safe-area-inset-bottom,0px));
  z-index:75;
  display:flex;flex-direction:column;gap:16px;
  padding:22px var(--gutter);
  background:linear-gradient(160deg,#2B1B3D 0%,#1B1226 100%);
  border-right:var(--hair);
  overflow-y:auto;
  opacity:0;visibility:hidden;pointer-events:none;
  transform:translateY(-10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.site-nav[data-open="true"]{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
.site-nav__cap{
  font-family:var(--mono);font-size:10px;letter-spacing:.34em;
  color:rgba(201,162,39,.6);margin:0;
}
.site-nav__list{display:flex;flex-direction:column;gap:2px;width:100%}
.site-nav__item{width:100%}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:12px 6px;border-radius:4px;
  border-bottom:var(--hair-soft);
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;
  color:rgba(240,233,220,.86);
  transition:color var(--ease),background-color var(--ease),box-shadow var(--ease);
}
.nav-link__num{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:rgba(201,162,39,.78)}
.nav-link__label{font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:.14em}
.nav-link:hover{color:var(--gold-hi);background:rgba(201,162,39,.1)}
.nav-link[aria-current="page"]{
  color:var(--gold-hi);
  background:rgba(201,162,39,.14);
  box-shadow:inset 0 0 0 1px rgba(201,162,39,.7);
}
.nav-link[aria-current="page"] .nav-link__num{color:var(--gold-hi)}
.site-nav__foot{
  margin:auto 0 0;padding-top:14px;
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  color:rgba(201,162,39,.45);
}
/* 底部常驻查询条 */
.mobile-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;height:var(--dock-h);
  padding-bottom:env(safe-area-inset-bottom,0px);
  background:rgba(20,16,26,.96);
  border-top:1px solid rgba(201,162,39,.36);
}
.dock-link{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  color:rgba(232,213,181,.72);
  transition:color var(--ease),background-color var(--ease);
}
.dock-link__dot{width:5px;height:5px;border-radius:50%;background:var(--gold);opacity:.55;transition:opacity var(--ease),transform var(--ease)}
.dock-link:hover,.dock-link:focus-visible,.dock-link[aria-current="page"]{color:var(--gold-hi);background:rgba(201,162,39,.08)}
.dock-link[aria-current="page"] .dock-link__dot,.dock-link:hover .dock-link__dot{opacity:1;transform:scale(1.35)}

/* ---------- 06 页脚 ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,#1B1226 0%,#14101A 100%);
  color:rgba(244,239,230,.8);
  border-top:1px solid rgba(201,162,39,.34);
  padding-top:clamp(38px,5.6vw,72px);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(201,162,39,0),rgba(201,162,39,.75),rgba(201,162,39,0));
}
.site-footer__top{
  display:grid;grid-template-columns:1fr;gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(26px,4vw,46px);
}
.site-footer__brand{display:flex;flex-direction:column;gap:14px}
.site-footer__note{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;line-height:1.9;
  color:rgba(232,213,181,.5);margin:0;
}
.site-footer__save{
  margin:0;padding-left:10px;
  border-left:2px solid rgba(201,162,39,.6);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;line-height:1.8;
  color:rgba(241,210,122,.82);
}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,3vw,32px)}
.footer-col__title{
  font-family:var(--serif);font-size:13px;font-weight:700;letter-spacing:.2em;
  color:var(--gold-hi);
  margin-bottom:12px;padding-bottom:8px;
  border-bottom:1px solid rgba(201,162,39,.22);
}
.footer-col__list{display:flex;flex-direction:column;gap:8px}
.footer-link{
  display:inline-block;
  font-size:14px;letter-spacing:.06em;
  color:rgba(244,239,230,.74);
  transition:color var(--ease),transform var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--gold-hi);transform:translateX(2px)}
.site-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;
  padding-block:20px 26px;
  border-top:1px solid rgba(201,162,39,.2);
}
.site-footer__contact{display:flex;flex-wrap:wrap;gap:4px 20px}
.site-footer__meta{
  margin:0;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:rgba(232,213,181,.66);
}
.site-footer__legal{
  margin:0;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:rgba(232,213,181,.5);
}

/* ---------- 07 组件 ---------- */
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;border-radius:6px;
  border:1px solid transparent;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  transition:transform var(--ease),box-shadow var(--ease),color var(--ease),background-color var(--ease),border-color var(--ease);
}
.btn--gold{
  background:linear-gradient(135deg,var(--gold) 0%,#B08C1F 100%);
  color:#1B1226;border-color:rgba(241,210,122,.6);
  box-shadow:0 10px 24px -16px rgba(201,162,39,.95);
}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 14px 28px -16px rgba(241,210,122,.95)}
.btn--ghost{border-color:rgba(201,162,39,.5);color:var(--sand);background:rgba(201,162,39,.06)}
.btn--ghost:hover{border-color:var(--gold-hi);color:var(--gold-hi);transform:translateY(-2px)}
.btn--stone{background:var(--stone-blue);color:#F4EFE6;border-color:rgba(62,107,138,.65)}
.btn--stone:hover{transform:translateY(-2px);background:#46789a}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border-radius:4px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;line-height:1.7;
  border:1px solid transparent;
}
.tag--gold{background:rgba(201,162,39,.14);border-color:rgba(201,162,39,.55);color:var(--gold-hi)}
.tag--clay{background:var(--clay);color:var(--paper)}
.tag--blue{background:var(--stone-blue);color:var(--paper)}
.tag--moss{background:var(--moss);color:var(--paper)}
.tag--ghost{border-color:rgba(111,106,99,.45);color:var(--rock)}

/* 面包屑 */
.breadcrumb{padding-block:12px;border-bottom:var(--hair-soft)}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  color:rgba(232,213,181,.6);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{color:rgba(232,213,181,.8);transition:color var(--ease)}
.breadcrumb__link:hover{color:var(--gold-hi)}
.breadcrumb__sep{color:rgba(201,162,39,.5)}
.breadcrumb__item[aria-current="page"]{color:var(--gold-hi)}
.section--paper .breadcrumb__list,.section--sand .breadcrumb__list{color:rgba(43,27,61,.6)}
.section--paper .breadcrumb__link,.section--sand .breadcrumb__link{color:rgba(43,27,61,.8)}
.section--paper .breadcrumb__item[aria-current="page"],.section--sand .breadcrumb__item[aria-current="page"]{color:var(--clay)}

/* 章节头 */
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(22px,3vw,40px)}
.section-head__num{font-family:var(--mono);font-size:11px;letter-spacing:.28em;color:var(--gold)}
.section-head__title{font-family:var(--serif)}
.section-head__lead{max-width:60ch;font-size:15px;line-height:1.95;color:rgba(232,213,181,.72);margin:0}

/* 卡片 */
.card{
  position:relative;
  padding:clamp(16px,2.2vw,24px);
  border-radius:var(--radius);
  background:var(--sand);color:var(--on-light);
  border:1px solid rgba(43,27,61,.12);
  box-shadow:0 18px 40px -34px rgba(20,16,26,.9);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);border-color:rgba(201,162,39,.75);box-shadow:0 22px 46px -32px rgba(201,162,39,.55)}
.card--dark{
  background:rgba(43,27,61,.72);
  color:var(--on-dark);
  border-color:rgba(201,162,39,.32);
}
.card__meta{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 14px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:rgba(43,27,61,.62);
}
.card--dark .card__meta{color:rgba(232,213,181,.62)}

/* 图片容器 */
.media{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--radius);
  background:linear-gradient(150deg,#3A2A4E 0%,#241631 55%,#14101A 100%);
  border:1px solid rgba(201,162,39,.22);
}
.media img{display:block;width:100%;height:100%;object-fit:cover;filter:saturate(.94) contrast(1.05)}
.media--4x3{aspect-ratio:4/3}
.media--16x9{aspect-ratio:16/9}
.media--1x1{aspect-ratio:1/1}
.media--3x4{aspect-ratio:3/4}
.media::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;opacity:.14;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.07) 0 1px,rgba(255,255,255,0) 1px 3px);
}
.media::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(115% 90% at 50% 0%,rgba(241,210,122,.14) 0%,rgba(20,16,26,0) 44%),
    radial-gradient(120% 120% at 50% 100%,rgba(20,16,26,.62) 0%,rgba(20,16,26,0) 60%);
}
.media__caption{
  margin-top:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:rgba(232,213,181,.58);
}
.media__badge{position:absolute;left:12px;top:12px;z-index:3}

/* 长文 */
.prose{max-width:68ch;color:inherit;font-size:16px;line-height:1.9}
.prose p{margin-bottom:1.1em;max-width:none}
.prose h2{margin:1.7em 0 .55em;font-size:clamp(22px,2.4vw,30px)}
.prose h3{margin:1.4em 0 .45em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.2em;list-style:disc}
.prose li{margin-bottom:.4em}
.prose a{color:var(--stone-blue);border-bottom:1px solid rgba(201,162,39,.55);transition:color var(--ease),border-color var(--ease)}
.prose a:hover{color:var(--clay);border-color:var(--clay)}
.prose--dark a{color:var(--gold-hi)}
.prose--dark a:hover{color:#fff}

/* 锚点目录 */
.toc{display:flex;flex-direction:column;gap:6px;border-left:1px solid rgba(201,162,39,.32);padding-left:14px}
.toc__title{font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--gold);margin-bottom:4px}
.toc__link{
  display:block;padding:3px 0;
  font-size:13.5px;line-height:1.7;color:rgba(232,213,181,.72);
  transition:color var(--ease),padding-left var(--ease);
}
.toc__link:hover{color:var(--gold-hi)}
.toc__link[aria-current="true"]{
  color:var(--gold-hi);margin-left:-15px;padding-left:12px;
  border-left:2px solid var(--gold);
}
.section--paper .toc,.section--sand .toc{border-left-color:rgba(43,27,61,.24)}
.section--paper .toc__link,.section--sand .toc__link{color:rgba(43,27,61,.72)}
.section--paper .toc__link[aria-current="true"],.section--sand .toc__link[aria-current="true"]{color:var(--clay);border-left-color:var(--clay)}

/* ---------- 08 工具类 ---------- */
.eyebrow{
  display:inline-block;
  font-family:var(--mono);font-size:11px;letter-spacing:.26em;
  color:var(--gold);text-transform:uppercase;
}
.mono{font-family:var(--mono);letter-spacing:.1em}
.rule{height:1px;border:0;background:linear-gradient(90deg,rgba(201,162,39,.7),rgba(201,162,39,0))}
.text-muted{color:rgba(232,213,181,.68)}
.stack{display:flex;flex-direction:column;gap:16px}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 09 响应式 ---------- */
@media (max-width:1079px){
  body{padding-bottom:calc(var(--dock-h) + env(safe-area-inset-bottom,0px))}
  body.is-nav-open{overflow:hidden}
}
@media (min-width:560px){
  .command-link{display:inline-flex}
}
@media (min-width:900px){
  .command-bar__note{display:block}
  .site-footer__top{grid-template-columns:1.1fr 2fr}
  .footer-nav{gap:32px}
}
@media (min-width:1080px){
  body{padding-left:var(--rail-w);padding-bottom:0}
  .mobile-dock{display:none}
  .nav-toggle{display:none}
  .site-nav{
    position:fixed;left:0;right:auto;top:var(--bar-h);bottom:0;
    width:var(--rail-w);
    z-index:78;
    display:flex;flex-direction:column;align-items:center;
    gap:8px;padding:20px 0 24px;
    background:linear-gradient(180deg,#241533 0%,#191025 100%);
    border-right:var(--hair);border-bottom:0;
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
    overflow-y:auto;scrollbar-width:none;
  }
  .site-nav::-webkit-scrollbar{display:none}
  .site-nav__cap{
    writing-mode:vertical-rl;text-orientation:upright;
    font-size:9px;letter-spacing:.34em;color:rgba(201,162,39,.55);
    margin:0 0 6px;line-height:1;
  }
  .site-nav__list{flex:0 0 auto;align-items:center;gap:2px}
  .site-nav__item{display:flex;justify-content:center;width:100%}
  .nav-link{
    display:inline-block;
    writing-mode:vertical-rl;text-orientation:upright;
    padding:6px 0;border-bottom:0;border-radius:5px;
    font-family:var(--mono);font-size:13px;letter-spacing:.1em;
    color:rgba(232,213,181,.82);
  }
  .nav-link__num{display:inline;font-size:10px;letter-spacing:.1em;color:rgba(201,162,39,.7);margin-inline-end:8px}
  .nav-link__label{display:inline;font-family:var(--serif);font-size:13px;font-weight:700;letter-spacing:.1em}
  .nav-link:hover{background:rgba(201,162,39,.1)}
  .site-nav__foot{display:none}
}
@media (max-width:900px){
  .col-3,.col-4,.col-5{grid-column:span 6}
  .col-6,.col-7,.col-8,.col-9{grid-column:span 12}
}
@media (max-width:760px){
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:22px}
  .site-footer__base{flex-direction:column;align-items:flex-start}
}
@media (max-width:620px){
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:span 12}
  .brand__line{display:none}
  .footer-nav{grid-template-columns:1fr}
  .btn{width:100%}
}

/* ---------- 10 无障碍与动效 ---------- */
:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px;border-radius:4px}
[data-reveal]{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
  .scroll-meter__fill{transition:none}
  .card:hover,.btn:hover,.footer-link:hover{transform:none}
}