/* =========================================================
   长乐坊指南 · 共享样式 /assets/site.css
   索引册页 / 蓝图网格 / 唐三彩釉色
   ========================================================= */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    radial-gradient(circle at 12% 14%,rgba(224,138,43,.07),transparent 44%),
    radial-gradient(circle at 88% 4%,rgba(30,127,114,.06),transparent 46%),
    radial-gradient(circle at 50% 96%,rgba(192,57,43,.045),transparent 52%);
  background-size:48px 48px,48px 48px,100% 100%,100% 100%,100% 100%;
  background-attachment:fixed,fixed,fixed,fixed,fixed;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,dl,dd,dt,figure,blockquote{margin:0}
main{display:block}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--amber-deep);outline-offset:3px;border-radius:6px}

/* ---------- tokens ---------- */
:root{
  --paper:#F6F0E4;
  --paper-2:#EDE4D3;
  --ink:#1C1A17;
  --ink-soft:#4A4640;
  --amber:#E08A2B;
  --amber-deep:#A85C12;
  --amber-light:#F6C77A;
  --jade:#1E7F72;
  --cinnabar:#C0392B;
  --clay:#8A5A33;
  --lantern:#FFFDF7;

  --line:rgba(28,26,23,.10);
  --line-2:rgba(28,26,23,.20);
  --grid:rgba(74,70,64,.055);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,"Times New Roman",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --r-sm:10px;
  --r-md:18px;
  --r-lg:28px;
  --r-pill:999px;
  --w-page:1120px;
  --gap:clamp(1rem,2.6vw,1.8rem);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 基础排版 ---------- */
h1,h2,h3,h4,.display{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.26;
  color:var(--ink);
}
h1{font-size:clamp(1.9rem,4.4vw,2.75rem)}
h2{font-size:clamp(1.5rem,3.4vw,2.1rem)}
h3{font-size:clamp(1.15rem,2.4vw,1.5rem);font-weight:700}
p{max-width:74ch}
strong{font-weight:700}
.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.num{font-weight:500}
.muted{color:var(--ink-soft)}
.lead{font-size:clamp(1rem,1.6vw,1.14rem);color:var(--ink-soft);max-width:62ch;line-height:1.85}
.small{font-size:.84rem}

/* ---------- 布局工具 ---------- */
.container{width:min(var(--w-page),100% - 2.4rem);margin-inline:auto}
.section{padding-block:clamp(2.4rem,6vw,4.6rem)}
.section__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem 1.2rem;margin-bottom:clamp(1rem,2.4vw,1.7rem)}
.section__title{font-family:var(--font-display);font-weight:900;font-size:clamp(1.5rem,3.4vw,2.1rem);letter-spacing:-.02em;line-height:1.25}
.eyebrow{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;color:var(--ink-soft);text-transform:uppercase}
.rule{height:1px;border:0;background:var(--line-2);margin:clamp(1.4rem,3vw,2.2rem) 0}
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--index{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
.stack{display:flex;flex-direction:column;gap:var(--gap)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.45rem;
  border-radius:var(--r-pill);
  padding:.72rem 1.3rem;
  font-size:.92rem;font-weight:600;letter-spacing:.04em;
  border:1px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn--primary{background:var(--amber);color:#2A1806;box-shadow:0 12px 24px -16px rgba(168,92,18,.95)}
.btn--primary:hover{background:var(--amber-deep);color:var(--lantern)}
.btn--ghost{background:transparent;border-color:var(--line-2);color:var(--ink)}
.btn--ghost:hover{border-color:var(--amber);color:var(--amber-deep)}
.btn--sm{padding:.5rem .95rem;font-size:.82rem}
.btn:active{transform:translateY(1px)}

/* ---------- 标签 / 卡片 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.34rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;
  padding:.2rem .62rem;border-radius:var(--r-pill);
  background:var(--amber-light);color:#3B2408;border:1px solid rgba(168,92,18,.28);
}
.tag--jade{background:rgba(30,127,114,.14);color:#155F55;border-color:rgba(30,127,114,.34)}
.tag--cinnabar{background:rgba(192,57,43,.12);color:#8F2A1F;border-color:rgba(192,57,43,.32)}
.tag--clay{background:rgba(138,90,51,.12);color:var(--clay);border-color:rgba(138,90,51,.3)}
.tag--ghost{background:transparent;color:var(--ink-soft);border-color:var(--line-2)}

.card{
  position:relative;
  background:var(--lantern);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  padding:clamp(1.1rem,2.6vw,1.7rem);
}
.card--paper{background:var(--paper-2)}
.card--curve{border-radius:var(--r-lg) var(--r-lg) var(--r-lg) 6px}
.card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .6rem;margin-bottom:.7rem}

/* ---------- 索引列表 ---------- */
.index-list{border-top:1px solid var(--line-2)}
.index-list__item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:.9rem;align-items:baseline;padding:.95rem 0;border-bottom:1px solid var(--line)}
.index-list__num{font-family:var(--font-mono);font-size:.78rem;color:var(--clay)}
.index-list__title{font-weight:600;color:var(--ink)}
.index-list__meta{font-family:var(--font-mono);font-size:.74rem;color:var(--ink-soft);white-space:nowrap}

/* ---------- 折叠长文 ---------- */
.accordion{border-top:1px solid var(--line-2)}
.accordion__item{border-bottom:1px solid var(--line-2)}
.accordion__trigger{display:flex;width:100%;align-items:center;gap:.9rem;padding:1.05rem .2rem;text-align:left;font-size:1rem;font-weight:600;color:var(--ink)}
.accordion__trigger::after{content:"＋";margin-left:auto;font-family:var(--font-mono);color:var(--amber-deep);transition:transform .2s var(--ease)}
.accordion__trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.accordion__panel{padding:0 .2rem 1.15rem;color:var(--ink-soft);font-size:.96rem;line-height:1.8}

/* ---------- 正文 / 面包屑 ---------- */
.prose{max-width:70ch;font-size:1rem;line-height:1.8;color:var(--ink)}
.prose p + p,.prose ul + p,.prose p + ul{margin-top:1rem}
.prose h2{margin-top:clamp(1.8rem,4vw,2.6rem)}
.prose h3{margin-top:1.4rem}
.prose li{position:relative;padding-left:1.2rem;margin-top:.5rem;color:var(--ink-soft)}
.prose li::before{content:"";position:absolute;left:0;top:.85em;width:8px;height:1px;background:var(--clay)}
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;color:var(--ink-soft);padding-block:.4rem}
.breadcrumbs__item::after{content:"/";margin-left:.45rem;color:var(--clay)}
.breadcrumbs__item:last-child::after{content:""}
.breadcrumbs__item a:hover{color:var(--amber-deep)}

/* ---------- 章节索引 ---------- */
.index-nav{display:flex;flex-direction:column;gap:.1rem;position:sticky;top:140px}
.index-nav__link{
  display:block;padding:.45rem .85rem;font-size:.9rem;color:var(--ink-soft);
  border-left:2px solid transparent;border-radius:0 var(--r-sm) var(--r-sm) 0;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.index-nav__link:hover{color:var(--amber-deep)}
.index-nav__link.is-current{color:var(--ink);font-weight:700;border-left-color:var(--amber);background:rgba(224,138,43,.09)}

/* ---------- 图片容器 ---------- */
.img-frame{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--paper-2);border:1px solid var(--line-2)}
.img-frame img{width:100%;height:100%;object-fit:cover}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--tall{aspect-ratio:4/5}
.img-frame--square{aspect-ratio:1/1}
.img-frame__cap{position:absolute;left:.85rem;bottom:.85rem;background:rgba(28,26,23,.8);color:var(--lantern);font-family:var(--font-mono);font-size:.68rem;letter-spacing:.04em;padding:.25rem .65rem;border-radius:var(--r-pill)}
.img-frame::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(255,253,247,.22);pointer-events:none}

/* ---------- 显现动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
html:not(.js) .reveal{opacity:1;transform:none}

/* =========================================================
   页头
   ========================================================= */
.skip-link{
  position:absolute;left:1rem;top:-120px;z-index:200;
  background:var(--ink);color:var(--lantern);
  padding:.7rem 1.15rem;border-radius:var(--r-pill);
  font-size:.85rem;letter-spacing:.04em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:.8rem}

.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.header-rail{
  height:8px;
  border-top:3px solid var(--amber);
  background-image:
    repeating-linear-gradient(90deg,rgba(138,90,51,.5) 0 1px,transparent 1px 32px),
    repeating-linear-gradient(90deg,rgba(138,90,51,.22) 0 1px,transparent 1px 8px);
  background-size:32px 8px,8px 4px;
  background-position:0 100%,0 100%;
  background-repeat:repeat-x;
  transition:height .22s var(--ease);
}
.header-inner{position:relative;width:min(var(--w-page),100% - 2.4rem);margin-inline:auto}

.header-frame{
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:.15rem;
  padding:1.05rem 0 0;
  transition:padding .22s var(--ease);
}
.header-domain{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.22em;
  color:var(--ink-soft);line-height:1.4;
}
.brand{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.5rem,3.6vw,2.05rem);letter-spacing:.08em;line-height:1.2;
  color:var(--ink);
  transition:font-size .22s var(--ease);
}
.brand__seal{
  width:1.45em;height:1.45em;display:grid;place-items:center;
  background:var(--cinnabar);color:var(--lantern);
  border-radius:9px;font-size:.6em;letter-spacing:0;transform:rotate(-2.5deg);
  box-shadow:inset 0 0 0 1px rgba(255,253,247,.4),0 6px 14px -8px rgba(192,57,43,.9);
}
.header-tools{
  position:absolute;right:0;top:1rem;
  display:flex;align-items:center;gap:.5rem;
}

/* 版本胶囊 */
.capsule{
  display:inline-flex;align-items:center;gap:.4rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.04em;
  padding:.4rem .7rem;border-radius:var(--r-pill);
  background:var(--amber-light);color:#3B2408;
  border:1px solid rgba(168,92,18,.34);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.capsule:hover{background:#F3BC61;border-color:var(--amber-deep)}
.capsule[aria-expanded="true"]{background:var(--amber);color:#2A1806}
.capsule__pulse{width:7px;height:7px;border-radius:50%;background:var(--jade);box-shadow:0 0 0 3px rgba(30,127,114,.18)}
.capsule__key{opacity:.72}
.capsule__val{font-weight:500}
.capsule__sep{opacity:.55}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;align-items:center;gap:.45rem;
  padding:.42rem .8rem;border-radius:var(--r-pill);
  border:1px solid var(--line-2);
  font-size:.8rem;letter-spacing:.08em;color:var(--ink);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--amber);color:var(--amber-deep)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:14px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 栏目导航 */
.site-nav{margin-top:.5rem;border-top:1px solid var(--line);transition:margin-top .22s var(--ease)}
.site-nav__list{
  display:flex;justify-content:center;gap:clamp(1rem,3vw,2.2rem);
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.site-nav__list::-webkit-scrollbar{display:none}
.site-nav__link{
  position:relative;display:inline-block;white-space:nowrap;
  padding:.62rem .1rem .78rem;
  font-size:.92rem;letter-spacing:.06em;color:var(--ink-soft);
  transition:color .18s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:.4rem;height:2px;border-radius:2px;
  background:var(--amber);transform:scaleX(0);transform-origin:center;
  transition:transform .22s var(--ease);
}
.site-nav__link:hover{color:var(--amber-deep)}
.site-nav__link:hover::after{transform:scaleX(.62)}
.site-nav__link[aria-current="page"]{color:var(--ink);font-weight:700}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}

/* 版本摘要 */
.version-panel{
  position:absolute;left:0;right:0;top:100%;z-index:94;
  display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:1rem;
  background:var(--lantern);
  border:1px solid var(--line-2);border-top:0;
  border-radius:0 0 var(--r-md) var(--r-md);
  padding:1rem clamp(.9rem,2.4vw,1.5rem) 1.15rem;
  box-shadow:0 26px 48px -32px rgba(28,26,23,.65);
}
.version-panel__list{display:flex;flex-wrap:wrap;gap:.8rem clamp(1rem,4vw,2.6rem)}
.version-panel__item dt{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;color:var(--ink-soft)}
.version-panel__item dd{font-family:var(--font-mono);font-size:1rem;font-weight:500;color:var(--ink)}
.version-panel__side{display:flex;flex-direction:column;align-items:flex-end;gap:.4rem}
.version-panel__hint{font-size:.78rem;color:var(--ink-soft);max-width:none}

/* 阅读进度 */
.read-progress{height:2px;background:rgba(28,26,23,.09)}
.read-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--amber),var(--cinnabar))}

/* 滚动收缩 */
.site-header[data-shrunk] .header-rail{height:4px;border-top-width:2px}
.site-header[data-shrunk] .header-domain{display:none}
.site-header[data-shrunk] .header-frame{padding-top:.5rem}
.site-header[data-shrunk] .brand{font-size:1.18rem;letter-spacing:.06em}
.site-header[data-shrunk] .brand__seal{font-size:.56em}
.site-header[data-shrunk] .header-tools{top:.45rem}
.site-header[data-shrunk] .site-nav{margin-top:.15rem}
.site-header[data-shrunk] .site-nav__link{padding:.42rem .1rem .56rem;font-size:.86rem}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,5.5rem);
  background-color:var(--paper-2);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:48px 48px,48px 48px;
  border-top:1px solid var(--line-2);
}
.footer-frame{
  width:min(var(--w-page),100% - 2.4rem);margin-inline:auto;
  padding:clamp(2.2rem,5vw,3.4rem) 0 clamp(1.4rem,3vw,2.2rem);
  display:grid;grid-template-columns:1.45fr .9fr .9fr 1.35fr;gap:clamp(1.6rem,4vw,2.6rem);
}
.footer-lead{display:flex;flex-direction:column;gap:.35rem}
.footer-brand{font-family:var(--font-display);font-weight:900;font-size:1.5rem;letter-spacing:.08em;color:var(--ink)}
.footer-tag{font-size:.9rem;color:var(--ink-soft)}
.footer-coord{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;color:var(--clay)}
.footer-col__title{
  font-family:var(--font-mono);font-size:.72rem;font-weight:500;letter-spacing:.2em;
  color:var(--ink-soft);margin-bottom:.75rem;
}
.footer-link{display:inline-block;padding:.28rem 0;font-size:.95rem;color:var(--ink-soft);transition:color .16s var(--ease)}
.footer-link:hover{color:var(--amber-deep)}

.contact-list{display:flex;flex-direction:column}
.contact-row{
  display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:.15rem .5rem;
  padding:.5rem 0;border-bottom:1px dashed var(--line);
}
.contact-row__key{grid-column:1 / -1;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;color:var(--ink-soft)}
.contact-row__val{font-size:.9rem;color:var(--ink);word-break:break-all}
.contact-copy{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;
  padding:.22rem .58rem;border-radius:var(--r-pill);
  border:1px solid var(--line-2);color:var(--ink-soft);
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.contact-copy:hover{border-color:var(--amber);color:var(--amber-deep)}
.copy-state{grid-column:1 / -1;font-family:var(--font-mono);font-size:.68rem;color:var(--ink-soft)}
.copy-state:empty{display:none}
.copy-state.is-ok{color:var(--jade)}

.footer-base-wrap{padding-block:0}
.footer-base{
  border-top:1px solid var(--line-2);
  padding-bottom:1.2rem;
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.4rem;
}
.footer-legal{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;color:var(--ink-soft);max-width:none}
.footer-note{font-size:.82rem;color:var(--ink-soft);flex:1 1 300px;max-width:62ch}

.sync-bar{
  position:sticky;bottom:0;z-index:20;
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;
  padding:.6rem clamp(1.2rem,4vw,2.4rem);
  background:var(--ink);color:var(--lantern);
  border-top:2px solid var(--amber);
}
.sync-bar__label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;color:rgba(255,253,247,.72)}
.sync-bar__clock{font-family:var(--font-mono);font-weight:500;font-size:.9rem;letter-spacing:.1em;color:var(--amber-light);font-variant-numeric:tabular-nums}
.sync-bar__next{font-size:.78rem;color:rgba(255,253,247,.66);margin-left:auto}
.sync-bar[data-static] .sync-bar__clock{color:var(--lantern);letter-spacing:.06em}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:980px){
  .footer-frame{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-lead{grid-column:1 / -1}
}
@media (max-width:900px){
  .grid--2,.grid--3,.grid--index{grid-template-columns:minmax(0,1fr)}
  .index-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:.3rem}
  .index-nav__link{border-left:0;border-bottom:2px solid transparent;border-radius:var(--r-pill);padding:.35rem .8rem;background:rgba(28,26,23,.04)}
  .index-nav__link.is-current{border-bottom-color:var(--amber)}
}
@media (max-width:860px){
  .site-header{position:sticky}
  .header-frame{flex-direction:row;align-items:center;justify-content:space-between;gap:.6rem;padding:.7rem 0 .8rem}
  .header-domain{display:none}
  .brand{font-size:1.15rem;letter-spacing:.05em}
  .brand__seal{font-size:.56em}
  .header-tools{position:static;gap:.45rem}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;margin:0;z-index:93;
    background:var(--paper-2);
    border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);
    max-height:0;overflow:hidden;visibility:hidden;opacity:0;
    transition:max-height .26s var(--ease),opacity .2s var(--ease),visibility .26s var(--ease);
  }
  .site-nav[data-open]{max-height:74vh;overflow-y:auto;visibility:visible;opacity:1}
  .site-nav__list{flex-direction:column;gap:0;padding:.45rem .2rem 1rem}
  .site-nav__link{display:block;padding:.85rem .3rem;border-bottom:1px solid var(--line);font-size:1rem}
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{color:var(--amber-deep)}
  .version-panel{grid-template-columns:minmax(0,1fr)}
  .version-panel__side{align-items:flex-start}
  .site-header[data-shrunk] .brand{font-size:1.02rem}
}
@media (max-width:640px){
  body{font-size:16px}
  .container,.header-inner,.footer-frame{width:min(var(--w-page),100% - 2rem)}
  .capsule__key{display:none}
  .capsule{font-size:.7rem;padding:.36rem .6rem}
  .footer-frame{grid-template-columns:minmax(0,1fr);padding-top:2rem}
  .sync-bar__next{margin-left:0;flex:1 1 100%}
  .index-list__item{grid-template-columns:auto minmax(0,1fr);gap:.5rem .8rem}
  .index-list__meta{grid-column:2;justify-self:start}
}

/* =========================================================
   可访问性
   ========================================================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .btn:active{transform:none}
}