/* ============================================================
   YABO 网页赛事 · 共享样式表 /assets/site.css
   01 变量与重置   02 基础排版   03 容器与网格
   04 通用组件     05 站点头部   06 站点页脚   07 动效与无障碍
   ============================================================ */

/* ---------- 01 变量与重置 ---------- */
:root{
  --paper:#F7F8F6;
  --paper-ink:#1B2026;
  --night:#101418;
  --night-2:#171D22;
  --night-3:#0B0E11;
  --ink-inverse:#E8EBE9;
  --ink-inverse-dim:rgba(232,235,233,.74);

  --grass:#0E7C4A;
  --grass-deep:#0A5C37;
  --sky:#2F7FD6;
  --lime:#D7F24A;
  --silver:#9BA3A8;
  --graphite:#2A3138;
  --mint:#E4F1E9;
  --amber:#C2571F;

  --line:rgba(27,32,38,.14);
  --line-strong:rgba(27,32,38,.28);
  --line-dark:rgba(155,163,168,.22);
  --line-lime:rgba(215,242,74,.34);

  --radius:4px;
  --radius-sm:2px;
  --shadow-1:0 1px 2px rgba(16,20,24,.08);
  --shadow-2:0 1px 2px rgba(16,20,24,.08),0 10px 28px rgba(16,20,24,.07);

  --maxw:1280px;
  --gutter:24px;
  --header-h:60px;

  --font-sans:'Noto Sans SC','Source Han Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono','SFMono-Regular',Menlo,Consolas,'Liberation Mono',monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,pre{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}

/* ---------- 02 基础排版 ---------- */
body{
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  color:var(--paper-ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
@media (min-width:900px){ body{font-size:17px;} }

h1,h2,h3{font-weight:700;line-height:1.28;letter-spacing:-.01em;}
h1{font-weight:900;font-size:clamp(34px,6.2vw,64px);line-height:1.05;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:clamp(19px,2vw,23px);}
strong{font-weight:700;}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

:focus-visible{
  outline:2px solid var(--sky);
  outline-offset:2px;
  border-radius:2px;
}
.section--dark :focus-visible,
.site-footer :focus-visible{outline-color:var(--lime);}

/* ---------- 03 容器与网格 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
}
.container--narrow{max-width:820px;}

.section{padding:52px 0;}
.section--tight{padding:32px 0;}
.section--dark{background:var(--night);color:var(--ink-inverse);}
.section--mint{background:var(--mint);}

.has-grain{position:relative;isolation:isolate;}
.has-grain::before{
  content:"";
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:repeating-linear-gradient(118deg,rgba(215,242,74,.055) 0 1px,transparent 1px 54px);
}
.has-grain > *{position:relative;z-index:1;}

.grid-12{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  align-items:start;
}
.span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 4;}

@media (min-width:700px){
  :root{--gutter:24px;}
  .section{padding:68px 0;}
  .section--tight{padding:40px 0;}
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr));gap:20px;}
  .span-3{grid-column:span 2;}
  .span-4,.span-5,.span-6{grid-column:span 4;}
  .span-7,.span-8,.span-9,.span-12{grid-column:span 8;}
}
@media (min-width:1080px){
  .section{padding:84px 0;}
  .section--tight{padding:48px 0;}
  .grid-12{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
  .span-3{grid-column:span 3;}
  .span-4{grid-column:span 4;}
  .span-5{grid-column:span 5;}
  .span-6{grid-column:span 6;}
  .span-7{grid-column:span 7;}
  .span-8{grid-column:span 8;}
  .span-9{grid-column:span 9;}
  .span-12{grid-column:span 12;}
}
@media (max-width:520px){
  :root{--gutter:18px;}
}

/* ---------- 04 通用组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);
  font-size:11px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--grass);
}
.eyebrow::before{content:"";width:16px;height:1px;background:currentColor;opacity:.7;}
.section--dark .eyebrow{color:var(--lime);}

.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;}
.section-head--center{align-items:center;text-align:center;}
.section-title{max-width:22ch;}
.section-lede{
  font-size:16px;
  color:rgba(27,32,38,.72);
  max-width:52ch;
}
.section--dark .section-lede{color:var(--ink-inverse-dim);}

.tick-rule{
  height:6px;width:100%;
  background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px 14px);
  opacity:.7;
}
.section--dark .tick-rule{
  background-image:repeating-linear-gradient(90deg,var(--line-dark) 0 1px,transparent 1px 14px);
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);font-size:14.5px;font-weight:600;
  padding:10px 18px;border-radius:3px;border:1px solid transparent;
  white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn--sm{padding:7px 13px;font-size:13px;}
.btn--primary{background:var(--grass);border-color:var(--grass);color:#fff;}
.btn--primary:hover{background:var(--grass-deep);border-color:var(--grass-deep);}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--paper-ink);}
.btn--ghost:hover{background:var(--mint);border-color:var(--grass);color:var(--grass-deep);}
.btn--inverse{background:var(--lime);border-color:var(--lime);color:var(--night);}
.btn--inverse:hover{background:#e6fb64;border-color:#e6fb64;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;
  padding:3px 8px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--paper);color:var(--paper-ink);
}
.tag--grass{background:var(--grass);border-color:var(--grass);color:#fff;}
.tag--lime{background:var(--lime);border-color:var(--lime);color:var(--night);}
.tag--sky{background:var(--sky);border-color:var(--sky);color:#fff;}
.tag--amber{background:var(--amber);border-color:var(--amber);color:#fff;}
.tag--ghost{background:transparent;border-color:var(--line-dark);color:var(--silver);}

.card{
  position:relative;
  display:flex;flex-direction:column;gap:12px;
  padding:20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.card--dark{background:var(--night-2);border-color:var(--graphite);color:var(--ink-inverse);}
.card--dark:hover{border-color:var(--line-lime);}
.card--flat:hover{transform:none;box-shadow:var(--shadow-1);border-color:var(--line-strong);}
.card__head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card__title{font-size:18px;font-weight:700;letter-spacing:-.005em;}
.card__meta{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.09em;
  text-transform:uppercase;color:var(--silver);
}
.card__body{font-size:15px;line-height:1.7;color:rgba(27,32,38,.74);}
.card--dark .card__body{color:var(--ink-inverse-dim);}

.stat{display:flex;flex-direction:column;gap:6px;}
.stat__value{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(28px,4vw,40px);line-height:1;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.stat__unit{font-size:.4em;font-weight:500;color:var(--silver);margin-left:5px;letter-spacing:0;}
.stat__label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--silver);
}

.data-table{width:100%;font-size:14.5px;}
.data-table caption{
  text-align:left;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--silver);
  padding-bottom:10px;
}
.data-table th,
.data-table td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;}
.data-table th{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;color:var(--silver);
  border-bottom-color:var(--line-strong);
}
.data-table tbody tr:nth-child(even){background:var(--mint);}
.data-table tbody tr:hover{background:rgba(47,127,214,.08);}
.data-table .num{
  font-family:var(--font-mono);font-weight:600;
  font-variant-numeric:tabular-nums;text-align:right;
}
.section--dark .data-table th,
.section--dark .data-table td{border-bottom-color:var(--line-dark);}
.section--dark .data-table tbody tr:nth-child(even){background:rgba(255,255,255,.03);}

.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:12px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.filter-btn{
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:7px 13px;border-radius:var(--radius-sm);
  border:1px solid var(--line-strong);
  background:#fff;color:var(--paper-ink);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.filter-btn:hover{border-color:var(--sky);color:var(--sky);}
.filter-btn[aria-pressed="true"]{background:var(--sky);border-color:var(--sky);color:#fff;}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--silver);
}
.section--dark .filter-bar{border-color:var(--line-dark);}
.section--dark .filter-btn{background:transparent;border-color:var(--line-dark);color:var(--ink-inverse);}
.section--dark .filter-btn[aria-pressed="true"]{background:var(--sky);border-color:var(--sky);color:#fff;}

.breadcrumbs{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--silver);
}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumbs li + li::before{content:"/";margin-right:8px;color:var(--line-strong);}
.breadcrumbs a:hover{color:var(--grass);}
.breadcrumbs [aria-current="page"]{color:var(--paper-ink);}

.fold{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  overflow:hidden;
}
.fold + .fold{margin-top:-1px;}
.fold > summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  font-size:15.5px;font-weight:600;
}
.fold > summary::-webkit-details-marker{display:none;}
.fold > summary::after{
  content:"+";margin-left:auto;
  font-family:var(--font-mono);font-size:16px;color:var(--grass);
}
.fold[open] > summary::after{content:"–";}
.fold[open] > summary{border-bottom:1px solid var(--line);}
.fold__body{padding:14px 18px 16px;font-size:15px;color:rgba(27,32,38,.74);}
.section--dark .fold{background:var(--night-2);border-color:var(--graphite);color:var(--ink-inverse);}
.section--dark .fold > summary::after{color:var(--lime);}

.media-frame{
  position:relative;display:block;overflow:hidden;
  background:var(--night-3);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-frame--16x9{aspect-ratio:16 / 9;}
.media-frame--3x2{aspect-ratio:3 / 2;}
.media-frame--4x3{aspect-ratio:4 / 3;}
.media-frame--1x1{aspect-ratio:1 / 1;}
.media-frame--21x9{aspect-ratio:21 / 9;}
.media-frame__placeholder{
  position:absolute;inset:0;
  background-image:
    radial-gradient(120% 90% at 18% 100%,rgba(14,124,74,.55),transparent 62%),
    radial-gradient(90% 72% at 92% 8%,rgba(47,127,214,.45),transparent 60%),
    var(--night);
}
.media-frame__scrim{
  position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(16,20,24,0) 42%,rgba(16,20,24,.82));
}
.media-frame__caption{
  position:absolute;left:14px;right:14px;bottom:12px;
  font-size:13px;line-height:1.5;color:var(--ink-inverse);
}
.media-frame__tag{
  position:absolute;top:12px;left:12px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.06em;
  padding:4px 8px;border-radius:var(--radius-sm);
  background:var(--lime);color:var(--night);
  transition:transform .2s var(--ease);
}
.media-frame:hover .media-frame__tag{transform:translateY(-4px);}

.prose{font-size:16.5px;}
.prose p{max-width:34em;}
.prose p + p{margin-top:1.2em;}
.prose h2{margin-top:1.6em;margin-bottom:.6em;max-width:24ch;}
.prose h3{margin-top:1.4em;margin-bottom:.5em;}
.prose ul,.prose ol{margin:1.1em 0;display:flex;flex-direction:column;gap:.55em;}
.prose li{position:relative;padding-left:1.2em;max-width:34em;}
.prose li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:1px;background:var(--grass);
}
.prose a{color:var(--sky);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--grass-deep);}

/* ---------- 05 站点头部 ---------- */
.skip-link{
  position:absolute;left:12px;top:-80px;z-index:200;
  padding:10px 16px;border-radius:3px;
  background:var(--night);color:var(--lime);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;}

.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,248,246,.95);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:3px;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(27,32,38,.10) 0 1px,transparent 1px 20px);
}

.header-inner{
  position:relative;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  gap:18px;
  transition:min-height .24s var(--ease);
}
@media (min-width:1080px){
  :root{--header-h:68px;}
  .site-header.is-stuck .header-inner{min-height:56px;}
  .site-header.is-stuck{box-shadow:0 1px 2px rgba(16,20,24,.09);}
}

.brand{
  display:inline-flex;align-items:center;gap:9px;
  flex:0 0 auto;
}
.brand-mark{
  position:relative;width:11px;height:11px;flex:0 0 auto;
  background:var(--grass);border-radius:2px;
}
.brand-mark::after{
  content:"";position:absolute;inset:3px;
  background:var(--lime);border-radius:1px;
}
.brand-name{
  font-size:17px;font-weight:900;letter-spacing:-.02em;
  color:var(--paper-ink);
}
.brand-name-alt{
  margin-left:7px;font-size:15px;font-weight:500;
  letter-spacing:0;color:var(--grass);
}
.brand--inverse .brand-name{color:var(--ink-inverse);}
.brand--inverse .brand-name-alt{color:var(--lime);}

.site-nav{
  flex:1 1 auto;min-width:0;
  display:flex;justify-content:center;
}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-link{
  display:inline-flex;align-items:baseline;gap:7px;
  padding:9px 11px;border-radius:3px;
  font-size:14.5px;font-weight:500;color:var(--paper-ink);
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-index{
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.08em;color:var(--silver);
  transition:color .18s var(--ease);
}
.nav-text{white-space:nowrap;}
.nav-link:hover{background:var(--mint);color:var(--grass-deep);}
.nav-link:hover .nav-index{color:var(--grass);}
.nav-link[aria-current="page"]{background:var(--mint);color:var(--grass-deep);}
.nav-link[aria-current="page"] .nav-index{color:var(--grass);}

.header-tail{
  margin-left:auto;
  display:flex;align-items:center;gap:10px;
  flex:0 0 auto;
}
.header-state{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 10px;border-radius:var(--radius-sm);
  background:var(--mint);
  border:1px solid rgba(14,124,74,.22);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;
  color:var(--grass-deep);white-space:nowrap;
}
.state-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--grass);
  box-shadow:0 0 0 3px rgba(14,124,74,.14);
}
.header-cta{white-space:nowrap;}

.nav-toggle{
  display:none;
  align-items:center;gap:9px;
  padding:8px 12px;
  border:1px solid var(--line-strong);
  border-radius:3px;
  background:#fff;color:var(--paper-ink);
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.08em;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle-bars span{
  display:block;height:1.5px;background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle[aria-expanded="true"]{
  background:var(--mint);border-color:var(--grass);color:var(--grass-deep);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child{transform:translateY(2.75px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child{transform:translateY(-2.75px) rotate(-45deg);}

.header-progress{
  position:absolute;left:0;bottom:0;z-index:2;
  height:2px;width:0;
  background:linear-gradient(90deg,var(--grass),var(--sky));
  transition:width .1s linear;
}

@media (max-width:1279px){
  .header-state{display:none;}
}
@media (max-width:1000px){
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;justify-content:flex-start;
    padding:6px 0 12px;
    background:var(--night);
    border-top:1px solid var(--line-lime);
    border-bottom:1px solid var(--graphite);
    box-shadow:0 18px 40px rgba(16,20,24,.28);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
  }
  .site-nav[data-open]{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-link{
    padding:14px var(--gutter);
    border-radius:0;
    border-bottom:1px solid rgba(155,163,168,.14);
    font-size:16px;
    color:var(--ink-inverse);
  }
  .nav-link:hover{background:rgba(215,242,74,.08);color:var(--lime);}
  .nav-link[aria-current="page"]{background:rgba(215,242,74,.1);color:var(--lime);}
  .nav-link[aria-current="page"] .nav-index{color:var(--lime);}
  .nav-link:hover .nav-index{color:var(--lime);}
  .nav-index{font-size:11px;}
}
@media (max-width:760px){
  .header-cta{padding:7px 11px;font-size:12.5px;}
}
@media (max-width:520px){
  .nav-toggle-label{display:none;}
  .nav-toggle{padding:8px 10px;}
}
@media (max-width:420px){
  .header-cta{display:none;}
}

/* ---------- 06 站点页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--night);
  color:var(--ink-inverse);
}
.site-footer::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:repeating-linear-gradient(112deg,rgba(215,242,74,.055) 0 1px,transparent 1px 52px);
}
.site-footer::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;z-index:1;
  background:linear-gradient(90deg,var(--grass),var(--sky) 52%,var(--lime));
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--maxw);
  margin:0 auto;
  padding:56px var(--gutter) 0;
}
.footer-top{display:grid;gap:34px;}
@media (min-width:900px){
  .footer-top{grid-template-columns:minmax(230px,1fr) 2.5fr;gap:56px;align-items:start;}
}
.footer-brand{display:flex;flex-direction:column;gap:14px;}
.footer-note{
  font-size:14.5px;line-height:1.7;
  color:var(--ink-inverse-dim);
  max-width:30ch;
}
.footer-tag{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--silver);
  border-left:2px solid var(--grass);
  padding-left:10px;
}
.footer-grid{
  display:grid;
  gap:28px 24px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:720px){
  .footer-grid{grid-template-columns:repeat(4,minmax(0,1fr));}
}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;
  color:var(--lime);
}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{
  font-size:14.5px;
  color:rgba(232,235,233,.82);
  transition:color .18s var(--ease);
}
.footer-list a:hover{color:var(--lime);}
.footer-list--plain li{
  font-family:var(--font-mono);font-size:13px;
  font-variant-numeric:tabular-nums;
  color:rgba(232,235,233,.62);
  word-break:break-word;
}
.footer-bottom{
  position:relative;z-index:1;
  max-width:var(--maxw);
  margin:0 auto;
  padding:20px var(--gutter) 28px;
  border-top:1px solid rgba(155,163,168,.18);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:var(--silver);
}
.footer-top + .footer-bottom{margin-top:44px;}
.footer-legal{flex:1 1 320px;}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-legal-links a{color:rgba(232,235,233,.78);transition:color .18s var(--ease);}
.footer-legal-links a:hover{color:var(--lime);}
.footer-copy{white-space:nowrap;}

/* ---------- 07 动效与无障碍 ---------- */
.js .reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .36s ease-out,transform .36s ease-out;
}
.js .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;
  }
  .js .reveal{opacity:1;transform:none;transition:none;}
  .card:hover{transform:none;}
  .media-frame:hover .media-frame__tag{transform:none;}
}