/* ==========================================================================
   利记中心 · 共享站点样式  /assets/site.css
   深墨蓝底 + 朱砂橙 / 鎏金渐变 / 青瓷绿状态 / 切角面板 / 坐标刻度
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#06111D;
  --ink-800:#0B1E33;
  --ink-700:#142F4C;
  --ink-600:#1B3A5C;
  --ink-500:#33506E;
  --paper:#F4F6F8;
  --paper-dim:#C6D2DE;
  --slate:#8A97A6;
  --slate-deep:#4A5C70;
  --cinnabar:#E8542B;
  --gold-1:#C98A16;
  --gold-2:#F0B429;
  --celadon:#3FB6A8;
  --electric:#4FD1E8;
  --violet:#7A5CFF;

  --gold-grad:linear-gradient(100deg,#C98A16 0%,#F0B429 58%,#E8542B 100%);
  --fire-grad:linear-gradient(100deg,#E8542B 0%,#E8542B 42%,#F0B429 100%);
  --panel-grad:linear-gradient(150deg,rgba(20,47,76,.96) 0%,rgba(11,30,51,.88) 100%);

  --font-display:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --max-w:1320px;
  --gutter:clamp(18px,4vw,56px);
  --header-h:88px;
  --cut:18px;
  --hair:rgba(198,210,222,.14);
  --hair-strong:rgba(198,210,222,.28);
}
@media (max-width:1080px){
  :root{--header-h:74px;}
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 16px);
}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol,hr{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,picture{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--electric);outline-offset:2px}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--paper);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(900px 520px at 88% -8%,rgba(79,209,232,.07),transparent 62%),
    radial-gradient(760px 460px at 2% 6%,rgba(232,84,43,.06),transparent 60%),
    linear-gradient(rgba(198,210,222,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(198,210,222,.028) 1px,transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-top:var(--header-h);
  min-height:100vh;
}
h1,.h1{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(34px,5.2vw,56px);line-height:1.1;letter-spacing:-.01em;
}
h2,.h2{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(26px,3.6vw,40px);line-height:1.16;letter-spacing:-.005em;
}
h3,.h3{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(20px,2.4vw,28px);line-height:1.28;
}
h4,.h4{font-family:var(--font-display);font-weight:600;font-size:20px;line-height:1.36}
p{font-size:16px}
strong,b{font-weight:700;color:var(--paper)}
small{font-size:13px;color:var(--slate)}
::selection{background:var(--cinnabar);color:#1A0C05}

/* ---------- 4. 布局 ---------- */
.container{
  width:100%;max-width:var(--max-w);
  margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);
}
.container--narrow{max-width:880px}
.section{padding:clamp(52px,7.5vw,104px) 0;position:relative}
.section--paper{background:var(--paper);color:var(--ink-800)}
.section--paper .section-head__lead{color:var(--slate-deep)}
.section--paper .kicker{color:#0E6E68}
.section--paper .kicker::before{background:var(--cinnabar)}
.section--deep{background:var(--ink-900)}
.split{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(24px,4vw,64px);
  align-items:start;
}
.stack > * + *{margin-top:var(--stack-gap,16px)}
.prose{max-width:34em}
.prose p + p{margin-top:1em}
.prose ul,.prose ol{margin-top:1em}
.prose li{position:relative;padding-left:1.4em;margin-top:.5em;font-size:16px}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--cinnabar)}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.74em 1.45em;
  font-family:var(--font-body);font-size:14px;font-weight:600;
  letter-spacing:.04em;line-height:1.2;
  border:1px solid transparent;border-radius:3px;
  text-align:center;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn--sm{padding:.5em 1em;font-size:12.5px}
.btn--primary{background-image:var(--fire-grad);color:#1A0C05;font-weight:700}
.btn--primary:hover{filter:brightness(1.09)}
.btn--ghost{border-color:rgba(198,210,222,.30);color:var(--paper)}
.btn--ghost:hover{border-color:var(--electric);color:var(--electric);background-color:rgba(79,209,232,.07)}
.btn--gold{border-color:rgba(201,138,22,.55);color:var(--gold-2)}
.btn--gold:hover{background-color:rgba(201,138,22,.12);color:#FFD166}
.btn:focus-visible{outline:2px solid var(--electric);outline-offset:3px}

/* ---------- 6. 头部 ---------- */
.skip-link{
  position:fixed;left:16px;top:-120px;z-index:200;
  padding:10px 20px;border-radius:3px;
  background-image:var(--gold-grad);color:#1A0C05;
  font-size:14px;font-weight:700;
  transition:top .18s ease;
}
.skip-link:focus{top:16px}

.site-header{
  position:fixed;inset:0 0 auto 0;z-index:90;
  padding:14px var(--gutter) 0;
  background:transparent;
  transition:padding-top .22s ease;
}
.site-header[data-scrolled]{padding-top:8px}
.header-inner{
  position:relative;
  max-width:var(--max-w);
  margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;
}

/* 品牌浮岛 */
.brand{
  position:relative;isolation:isolate;
  display:inline-flex;align-items:center;gap:12px;
  padding:7px 14px 7px 7px;
  background-image:var(--panel-grad);
  border:1px solid var(--hair);
  border-radius:4px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);
  box-shadow:0 14px 36px -24px rgba(0,0,0,.95);
}
.brand::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  clip-path:inherit;
  box-shadow:inset 0 0 0 1px rgba(201,138,22,.30);
}
.brand:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--electric)}
.brand__mark{
  flex:0 0 38px;width:38px;height:38px;
  display:grid;place-items:center;
  font-family:var(--font-display);font-weight:900;font-size:19px;color:var(--ink-900);
  background-image:var(--gold-grad);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.brand__body{display:flex;flex-direction:column;line-height:1.2}
.brand__name{
  font-family:var(--font-display);font-weight:800;font-size:17px;
  letter-spacing:.08em;color:var(--paper);
}
.brand__tag{font-size:11px;letter-spacing:.1em;color:var(--slate)}
.brand__version{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--gold-2);
  border:1px solid rgba(201,138,22,.42);
  border-radius:2px;padding:2px 6px;margin-left:4px;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:10px 14px;
  background-image:var(--panel-grad);
  border:1px solid var(--hair);border-radius:4px;
  color:var(--paper);font-size:13px;letter-spacing:.12em;
}
.nav-toggle__bars{display:block;width:18px}
.nav-toggle__bars i{
  display:block;height:2px;margin:3px 0;
  background-color:var(--gold-2);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle__bars i:first-child{margin-top:0}
.nav-toggle__bars i:last-child{margin-bottom:0}

/* 栏目浮岛 */
.site-nav{
  display:flex;align-items:center;gap:6px;
  padding:6px 6px 6px 8px;
  background-image:var(--panel-grad);
  border:1px solid var(--hair);
  border-radius:4px;
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);
  box-shadow:0 18px 46px -28px rgba(0,0,0,.95);
}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__link{
  display:block;padding:8px 11px;border-radius:3px;
  font-size:13px;letter-spacing:.02em;color:var(--paper-dim);
  transition:color .16s ease,background-color .16s ease;
}
.site-nav__link:hover{color:#fff;background-color:rgba(79,209,232,.09)}
.site-nav__link[aria-current="page"]{
  color:#1A0C05;font-weight:700;
  background-image:var(--fire-grad);
}
.site-nav__action{margin-left:4px}

/* 阅读进度 */
.read-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background-color:rgba(198,210,222,.10);
}
.read-progress__bar{
  display:block;height:100%;width:0;
  background-image:linear-gradient(90deg,#C98A16 0%,#F0B429 52%,#E8542B 100%);
  box-shadow:0 0 12px rgba(240,180,41,.45);
  transition:width .1s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,132px);
  background-color:var(--ink-900);
  background-image:linear-gradient(180deg,rgba(11,30,51,0) 0%,#06111D 26%);
  color:var(--paper-dim);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background-image:linear-gradient(90deg,transparent,rgba(201,138,22,.62),transparent);
}
.footer-shell{
  max-width:var(--max-w);margin:0 auto;
  padding:clamp(40px,6vw,76px) var(--gutter) clamp(26px,4vw,48px);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:clamp(24px,4vw,56px);
}
.footer-brand__link{display:inline-flex;align-items:center;gap:10px}
.footer-brand__mark{
  width:34px;height:34px;display:grid;place-items:center;
  background-image:var(--gold-grad);color:var(--ink-900);
  font-family:var(--font-display);font-weight:900;font-size:17px;
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.footer-brand__name{
  font-family:var(--font-display);font-weight:800;font-size:19px;
  letter-spacing:.1em;color:var(--paper);
}
.footer-brand__line{margin-top:14px;font-size:13px;color:var(--slate);max-width:30em}
.footer-brand__version{
  margin-top:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--slate);
}
.footer-brand__version .mono{color:var(--gold-2)}
.footer-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.footer-col__title{
  position:relative;padding-bottom:10px;margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  color:var(--electric);text-transform:uppercase;
}
.footer-col__title::after{
  content:"";position:absolute;left:0;bottom:0;width:22px;height:1px;
  background-color:var(--cinnabar);
}
.footer-col__list li + li{margin-top:9px}
.footer-col__list a{
  font-size:13.5px;color:var(--paper-dim);
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-col__list a:hover{color:var(--gold-2);border-bottom-color:rgba(240,180,41,.5)}
.footer-contact{
  margin-top:clamp(30px,5vw,56px);
  padding-top:22px;
  border-top:1px solid rgba(198,210,222,.12);
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:10px 28px;
}
.footer-contact__line{font-size:13px;color:var(--slate);line-height:2}
.footer-contact__note{font-size:12px;color:var(--slate);opacity:.82}
.copy-token{
  display:inline-flex;align-items:center;gap:.45em;
  padding:.15em .5em;margin:0 .1em;
  font-family:var(--font-mono);font-size:.86em;letter-spacing:.02em;
  color:var(--paper);
  border:1px dashed rgba(198,210,222,.38);
  border-radius:2px;
  transition:border-color .16s ease,color .16s ease;
}
.copy-token:hover{border-color:var(--electric);color:var(--electric)}
.copy-token::after{
  content:"复制";
  font-family:var(--font-body);font-size:.7em;letter-spacing:.1em;color:var(--slate);
}
.copy-token[data-copied]::after{content:"已复制";color:var(--celadon)}
.footer-base{border-top:1px solid rgba(198,210,222,.10);background-color:var(--ink-900)}
.footer-base__inner{
  max-width:var(--max-w);margin:0 auto;
  padding:16px var(--gutter);
  display:flex;flex-wrap:wrap;justify-content:space-between;
  gap:8px 22px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--slate);
}
.footer-base__region{color:var(--celadon)}

/* ---------- 8. 通用组件 ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:.7em;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--electric);
}
.kicker::before{content:"";width:18px;height:1px;background-color:var(--cinnabar)}
.kicker--gold{color:var(--gold-2)}
.kicker--gold::before{background-color:var(--gold-2)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:12px;letter-spacing:.16em;color:var(--slate);
}
.section-head{margin-bottom:clamp(24px,3.4vw,44px)}
.section-head__title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(24px,3.2vw,38px);line-height:1.18;
  opacity:.62;transition:opacity .3s ease;
}
.section[data-active] .section-head__title{opacity:1}
.section-head__lead{
  margin-top:14px;max-width:34em;
  font-size:15px;color:var(--slate);
}
.plate{
  display:inline-flex;align-items:baseline;gap:10px;
  padding:8px 14px;
  background-image:linear-gradient(140deg,rgba(201,138,22,.16),rgba(11,30,51,0) 72%);
  border:1px solid rgba(201,138,22,.45);
  border-radius:2px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;
  color:var(--gold-2);
  box-shadow:inset 0 0 24px rgba(201,138,22,.10);
}
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background-image:var(--panel-grad);
  border:1px solid var(--hair);
  border-radius:2px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.panel--cut-l{clip-path:polygon(var(--cut) 0,100% 0,100% 100%,0 100%,0 var(--cut))}
.panel--plain{clip-path:none;border-radius:3px}
.panel--paper{
  background-image:none;background-color:var(--paper);
  color:var(--ink-800);border-color:rgba(11,30,51,.12);
}
.panel--paper .panel__title{color:var(--ink-800)}
.hair{height:1px;border:0;background-color:var(--hair)}
.hair--gold{
  position:relative;height:1px;border:0;background-color:var(--hair);
}
.hair--gold::after{
  content:"";position:absolute;left:0;top:-1px;width:64px;height:2px;
  background-image:var(--gold-grad);
}
.index-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(248px,1fr));
  border-left:1px solid var(--hair);
}
.index-card{
  position:relative;
  padding:24px 22px 28px;
  border-top:1px solid var(--hair);
  border-right:1px solid var(--hair);
  transition:background-color .18s ease;
}
.index-card:hover{background-color:rgba(79,209,232,.055)}
.index-card__no{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;
  color:var(--gold-2);
}
.index-card__title{
  margin-top:10px;
  font-family:var(--font-display);font-weight:700;font-size:19px;color:var(--paper);
}
.index-card__desc{margin-top:6px;font-size:13.5px;color:var(--slate)}
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;left:96px;top:0;bottom:0;width:1px;
  background-color:var(--hair);
}
.timeline__item{
  position:relative;
  display:grid;grid-template-columns:96px minmax(0,1fr);
  column-gap:40px;
  padding:22px 0;
  border-top:1px solid var(--hair);
}
.timeline__item:first-child{border-top:0}
.timeline__item::before{
  content:"";position:absolute;left:96px;top:30px;
  width:8px;height:8px;margin-left:-4px;
  transform:rotate(45deg);
  background-image:var(--gold-grad);
}
.timeline__mark{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;
  color:var(--gold-2);
}
.timeline__body{font-size:15px;color:var(--paper-dim)}
.timeline__title{
  font-family:var(--font-display);font-weight:700;font-size:17px;color:var(--paper);
}
.fold{border-top:1px solid var(--hair)}
.fold:last-child{border-bottom:1px solid var(--hair)}
.fold__head{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 2px;text-align:left;
}
.fold__title{font-size:16px;font-weight:600;color:var(--paper);transition:color .16s ease}
.fold__head:hover .fold__title{color:var(--gold-2)}
.fold__meta{
  margin-left:auto;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--slate);
}
.fold__icon{position:relative;flex:0 0 14px;width:14px;height:14px}
.fold__icon::before,
.fold__icon::after{
  content:"";position:absolute;background-color:var(--gold-2);
  transition:transform .22s ease;
}
.fold__icon::before{left:0;top:6px;width:14px;height:2px}
.fold__icon::after{left:6px;top:0;width:2px;height:14px}
.fold[data-open] .fold__icon::after{transform:scaleY(0)}
.fold__body{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.fold[data-open] .fold__body{max-height:820px}
.fold__inner{padding:2px 2px 26px;font-size:15px;color:var(--slate)}
.tag{
  display:inline-flex;align-items:center;gap:.4em;
  padding:3px 8px;border-radius:2px;
  border:1px solid currentColor;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  white-space:nowrap;
}
.tag--ok{color:var(--celadon)}
.tag--beta{color:var(--violet)}
.tag--live{color:var(--cinnabar)}
.tag--gold{color:var(--gold-2)}
.tag--muted{color:var(--slate)}
.breadcrumb{
  padding:22px 0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--slate);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li:not(:last-child)::after{content:"/";color:rgba(198,210,222,.3)}
.breadcrumb a{color:var(--slate);transition:color .16s ease}
.breadcrumb a:hover{color:var(--electric)}

/* 图片容器基础规则（页面阶段放入 img / 内联 SVG） */
.media{
  position:relative;width:100%;overflow:hidden;
  border:1px solid var(--hair);border-radius:2px;
  background-color:var(--ink-700);
  background-image:linear-gradient(150deg,rgba(20,47,76,.92),rgba(6,17,29,.92));
}
.media > img,
.media > picture > img,
.media > svg{
  width:100%;height:100%;object-fit:cover;
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--21x9{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--grid::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(198,210,222,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(198,210,222,.07) 1px,transparent 1px);
  background-size:48px 48px;
}
.media__caption{
  position:absolute;left:14px;right:14px;bottom:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--paper-dim);
}
.text-muted{color:var(--slate)}
.text-gold{color:var(--gold-2)}
.text-ok{color:var(--celadon)}
.text-beta{color:var(--violet)}

/* ---------- 9. 动效 ---------- */
[data-reveal]{transition:opacity .42s ease,transform .42s ease}
[data-reveal][data-ready]{opacity:0;transform:translateY(14px)}
[data-reveal][data-shown]{opacity:1;transform:none}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:14px;
    clip-path:none;border-radius:4px;
    background-image:linear-gradient(160deg,rgba(20,47,76,.99),rgba(6,17,29,.99));
    box-shadow:0 26px 60px -30px rgba(0,0,0,.95);
    max-height:min(74vh,560px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .site-header[data-open] .site-nav{
    opacity:1;visibility:visible;transform:none;
  }
  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .site-nav__link{
    padding:13px 12px;font-size:15px;
    border-bottom:1px solid rgba(198,210,222,.10);
  }
  .site-nav__action{width:100%;margin-top:12px}
  .site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
  .site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
  .site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
}
@media (max-width:900px){
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .timeline::before{left:70px}
  .timeline__item{grid-template-columns:70px minmax(0,1fr);column-gap:26px}
  .timeline__item::before{left:70px}
}
@media (max-width:640px){
  .brand__tag{display:none}
  .brand__version{font-size:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-base__inner{justify-content:flex-start}
  .timeline::before{display:none}
  .timeline__item{grid-template-columns:1fr;row-gap:6px}
  .timeline__item::before{display:none}
  .index-grid{grid-template-columns:1fr}
}

/* ---------- 11. 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal],
  [data-reveal][data-ready]{opacity:1;transform:none}
}