/* =========================================================
   B体育 · minimal-b.com.cn 共享样式表 /assets/site.css
   01 重置  02 令牌  03 排版  04 容器  05 通用组件
   06 页头  07 页脚  08 响应式  09 动效降级
   ========================================================= */

/* ---------- 01 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:130px}
body{margin:0;background:var(--ink);color:var(--snow);font-family:var(--font-body);font-size:16px;line-height:1.8;font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg,video,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd,dt,figure,blockquote{margin:0}
p{margin:0}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--font-display);font-weight:900;line-height:.98;letter-spacing:-.012em}
hr{border:0;height:1px;background:var(--hair);margin:0}
::selection{background:var(--orange);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 02 令牌 ---------- */
:root{
  --ink:#0A0B0D;
  --ink-2:#11151C;
  --snow:#F4F6F8;
  --gold:#C9A45C;
  --gold-soft:#E8D9B0;
  --orange:#FF5A1F;
  --blue:#2D7DFF;
  --cyan:#7DE2FF;
  --graphite:#2A303A;
  --mist:#8A94A6;

  --ship-ink:#8A6A25;

  --shell:1280px;
  --gutter:clamp(20px,4.2vw,60px);
  --r-sm:14px;
  --r-md:24px;
  --r-lg:32px;

  --hair:rgba(201,164,92,.24);
  --panel:rgba(17,21,28,.9);
  --card-edge:rgba(244,246,248,.1);
  --muted:#8A94A6;

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

  --font-display:"Bebas Neue","Arial Narrow","PingFang SC","Hiragino Sans GB","Heiti SC","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono","Roboto Mono",Consolas,"Liberation Mono",monospace;
}

/* ---------- 03 排版 ---------- */
h1{font-size:clamp(40px,5.6vw,72px);line-height:.96}
h2{font-size:clamp(30px,3.6vw,44px)}
h3{font-size:clamp(21px,2.2vw,27px);line-height:1.16}
h4{font-size:clamp(17px,1.6vw,19px);line-height:1.3}
.num{font-family:var(--font-mono);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.prose{max-width:720px}
.prose > * + *{margin-top:1.1em}
.prose p{line-height:1.8}
.prose h3 + p{margin-top:.7em}

/* ---------- 04 容器与分区 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.band{position:relative;padding-block:clamp(52px,7vw,110px)}
.band--dark{background:var(--ink);color:var(--snow);--panel:rgba(17,21,28,.9);--card-edge:rgba(244,246,248,.1);--hair:rgba(201,164,92,.24);--muted:#8A94A6}
.band--ink2{background:var(--ink-2);color:var(--snow);--panel:rgba(10,11,13,.72);--card-edge:rgba(201,164,92,.22);--hair:rgba(201,164,92,.22);--muted:#8A94A6}
.band--snow{background:var(--snow);color:var(--ink);--panel:#FFFFFF;--card-edge:rgba(10,11,13,.1);--hair:rgba(10,11,13,.12);--muted:#5B6473}
.hairline{height:1px;width:100%;background:var(--hair);border:0}

/* ---------- 05 通用组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.3em;text-transform:uppercase;line-height:1;
  color:var(--gold);
}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor}
.band--snow .eyebrow{color:var(--ship-ink)}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(201,164,92,.4);
  background:rgba(201,164,92,.1);
  color:var(--gold-soft);
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.16em;line-height:1.5;text-transform:uppercase;
}
.band--snow .pill{border-color:rgba(10,11,13,.16);background:rgba(201,164,92,.16);color:var(--ship-ink)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:40px;padding:0 20px;border-radius:999px;
  border:1px solid transparent;background:transparent;color:inherit;
  font-family:var(--font-body);font-size:13.5px;font-weight:600;
  letter-spacing:.08em;line-height:1;white-space:nowrap;text-decoration:none;cursor:pointer;
  transition:transform .18s var(--ease),background .22s var(--ease),
             color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--orange);color:var(--ink);box-shadow:0 16px 32px -20px rgba(255,90,31,.95)}
.btn--primary:hover{background:#FF7238;transform:translateY(-1px);box-shadow:0 20px 38px -20px rgba(255,90,31,1)}
.btn--ghost{border-color:rgba(244,246,248,.22);background:rgba(17,21,28,.7);color:var(--snow)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-soft)}
.btn--line{border-color:rgba(201,164,92,.5);color:var(--gold-soft)}
.btn--line:hover{background:rgba(201,164,92,.12);border-color:var(--gold)}

.card{
  position:relative;overflow:hidden;
  background:var(--panel);
  border:1px solid var(--card-edge);
  border-radius:var(--r-md);
  padding:clamp(20px,3vw,32px);
}
.card--glow::after{
  content:"";position:absolute;right:-32%;bottom:-58%;
  width:78%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(45,125,255,.34),transparent 66%),
             radial-gradient(circle at 72% 28%,rgba(255,90,31,.22),transparent 62%);
  filter:blur(30px);pointer-events:none;
}
.card--glow > *{position:relative;z-index:1}

.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1fr) minmax(0,1.35fr)}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
}
.crumbs a{color:var(--muted);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--gold-soft)}
.crumbs__sep{color:rgba(201,164,92,.7)}
.crumbs [aria-current="page"]{color:inherit}

.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 28px;margin-bottom:clamp(24px,3.2vw,40px);
}
.section-head__title{margin:0;font-size:clamp(28px,3.4vw,42px)}

.section-index{display:flex;flex-direction:column;gap:4px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}
.section-index__link{
  display:flex;align-items:center;gap:10px;
  padding:8px 12px;border-left:1px solid var(--hair);
  color:var(--muted);transition:color .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.section-index__link:hover{color:var(--snow)}
.section-index__link[aria-current]{color:var(--gold-soft);border-left-color:var(--orange);padding-left:16px}

.img-frame{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--card-edge);
  aspect-ratio:16/9;
  background:
    radial-gradient(120% 92% at 18% 0%,rgba(45,125,255,.30),transparent 60%),
    radial-gradient(92% 82% at 100% 100%,rgba(255,90,31,.24),transparent 62%),
    var(--ink-2);
}
.img-frame > img{width:100%;height:100%;object-fit:cover}
.img-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 46%,rgba(10,11,13,.62));
}
.img-frame--wide{aspect-ratio:21/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}

.skip-link{
  position:absolute;left:50%;top:10px;z-index:200;
  transform:translate(-50%,-180%);
  padding:10px 20px;border-radius:999px;
  background:var(--snow);color:var(--ink);
  font-size:13px;font-weight:600;letter-spacing:.12em;line-height:1;
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translate(-50%,0)}

.to-top{
  position:fixed;right:clamp(14px,3vw,32px);bottom:clamp(14px,3vw,32px);z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 18px;border-radius:999px;
  border:1px solid rgba(201,164,92,.45);
  background:rgba(10,11,13,.92);
  color:var(--gold-soft);
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.16em;line-height:1;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .28s var(--ease),transform .28s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.to-top[data-visible]{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--orange);color:var(--snow)}

.has-js [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.has-js [data-reveal][data-revealed]{opacity:1;transform:none}

/* ---------- 06 页头 ---------- */
.topbar{
  position:sticky;top:0;z-index:80;
  color:var(--snow);
  background:rgba(10,11,13,.82);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--hair);
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.topbar::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(201,164,92,.09) 1px,transparent 1px);
  background-size:calc(100% / 12) 100%;
  opacity:.6;
}
.topbar[data-compact]{background:rgba(10,11,13,.95);border-bottom-color:rgba(201,164,92,.34)}
.topbar__progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;display:block;
  background:linear-gradient(90deg,var(--gold),var(--orange) 52%,var(--cyan));
  transform:scaleX(0);transform-origin:0 50%;pointer-events:none;
}
.topbar__inner{
  position:relative;
  display:grid;grid-template-columns:auto minmax(0,1fr);
  align-items:start;gap:clamp(16px,3vw,48px);
  padding-block:16px 14px;
  transition:padding .3s var(--ease);
}
.topbar[data-compact] .topbar__inner{padding-block:9px 8px}

.topbar__id{display:flex;align-items:center;gap:14px;min-width:0}
.brandmark{display:inline-flex;align-items:center;gap:12px;padding:2px 0;color:inherit}
.brandmark__glyph{
  position:relative;flex:none;
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:15px;border:1px solid rgba(201,164,92,.5);
  background:
    radial-gradient(120% 120% at 18% 0%,rgba(255,90,31,.32),transparent 62%),
    radial-gradient(120% 130% at 92% 100%,rgba(45,125,255,.34),transparent 64%),
    rgba(17,21,28,.9);
  color:var(--gold-soft);
  font-family:var(--font-display);font-size:22px;font-weight:900;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(232,217,176,.08);
}
.brandmark__text{display:flex;flex-direction:column;gap:5px;min-width:0}
.brandmark__name{
  font-family:var(--font-display);font-size:clamp(19px,1.9vw,23px);
  font-weight:900;letter-spacing:.04em;line-height:1;color:var(--snow);
}
.brandmark__tag{
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.36em;line-height:1;color:var(--gold);
  transition:opacity .25s var(--ease),transform .25s var(--ease);
}
.homelink{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  border:1px solid rgba(244,246,248,.16);
  color:rgba(244,246,248,.8);
  font-size:12px;font-weight:500;letter-spacing:.2em;line-height:1;white-space:nowrap;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.homelink::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--orange);box-shadow:0 0 8px rgba(255,90,31,.9)}
.homelink:hover{color:var(--snow);border-color:var(--gold)}

.topbar__panel{display:flex;flex-direction:column;align-items:flex-end;gap:10px;min-width:0}
.nav-rail{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:2px;min-width:0}
.nav-rail__link{
  position:relative;display:inline-flex;align-items:baseline;gap:7px;
  padding:8px 12px;border-radius:999px;
  color:rgba(244,246,248,.72);
  font-size:14px;font-weight:500;letter-spacing:.06em;line-height:1.6;white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-rail__idx{
  font-family:var(--font-mono);font-size:9.5px;font-weight:600;
  letter-spacing:.1em;color:rgba(201,164,92,.78);
  transition:color .22s var(--ease);
}
.nav-rail__link:hover{color:var(--snow);background:rgba(45,125,255,.16)}
.nav-rail__link:hover .nav-rail__idx{color:var(--cyan)}
.nav-rail__link[aria-current="page"]{color:var(--ink);background:var(--gold-soft)}
.nav-rail__link[aria-current="page"] .nav-rail__idx{color:rgba(10,11,13,.55)}

.topbar__actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px}
.quickslot{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 16px;border-radius:999px;
  border:1px solid rgba(125,226,255,.34);
  background:rgba(17,21,28,.72);
  color:rgba(244,246,248,.82);
  font-size:12.5px;font-weight:500;letter-spacing:.12em;line-height:1.4;
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.quickslot::before{content:"";width:11px;height:11px;border-radius:50%;border:1px solid var(--cyan);box-shadow:inset 0 0 0 2px rgba(125,226,255,.16)}
.quickslot:hover{color:var(--snow);border-color:var(--cyan);background:rgba(45,125,255,.18)}

.nav-toggle{
  display:none;align-items:center;gap:10px;justify-self:end;
  padding:10px 16px;border-radius:999px;
  border:1px solid rgba(244,246,248,.22);
  background:rgba(17,21,28,.86);
  color:var(--snow);
  font-size:12px;font-weight:600;letter-spacing:.16em;line-height:1;
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-soft)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .26s var(--ease),opacity .18s var(--ease)}
.nav-toggle__label{font-size:12px}

/* ---------- 07 页脚 ---------- */
.footer{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--snow);
  border-top:1px solid var(--hair);
  padding-top:clamp(52px,7vw,96px);
}
.footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(201,164,92,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(201,164,92,.06) 1px,transparent 1px);
  background-size:80px 80px;
  -webkit-mask-image:radial-gradient(130% 100% at 50% 0%,#000 12%,transparent 72%);
  mask-image:radial-gradient(130% 100% at 50% 0%,#000 12%,transparent 72%);
}
.footer__glow{
  position:absolute;left:-14%;top:-40%;
  width:64vw;max-width:760px;aspect-ratio:1;border-radius:50%;
  background:
    radial-gradient(circle at 40% 40%,rgba(45,125,255,.30),transparent 62%),
    radial-gradient(circle at 70% 70%,rgba(255,90,31,.20),transparent 66%);
  filter:blur(70px);pointer-events:none;
  animation:footerDrift 18s ease-in-out infinite alternate;
}
@keyframes footerDrift{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(6%,5%,0) scale(1.12)}
}
.footer__inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1.35fr);
  gap:clamp(36px,5vw,80px);
  padding-bottom:clamp(40px,5vw,64px);
}
.footer__lead{display:flex;flex-direction:column;gap:20px;max-width:420px}
.brandmark--footer .brandmark__glyph{width:52px;height:52px;border-radius:18px;font-size:26px}
.brandmark--footer .brandmark__name{font-size:26px}
.footer__line{font-size:15px;line-height:1.8;color:rgba(244,246,248,.72);max-width:34ch}
.footer__contact{display:flex;flex-direction:column;gap:16px}

.mailchip{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;
  width:100%;padding:12px 16px;border-radius:999px;
  border:1px solid rgba(201,164,92,.34);
  background:rgba(17,21,28,.78);
  color:var(--snow);text-align:left;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.mailchip:hover,.mailchip:focus-visible{
  border-color:var(--orange);
  box-shadow:0 0 0 1px rgba(255,90,31,.18),0 18px 40px -26px rgba(255,90,31,.9);
}
.mailchip[data-copied]{border-color:var(--cyan)}
.mailchip__label{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--gold)}
.mailchip__value{font-family:var(--font-mono);font-size:14px;font-weight:600;letter-spacing:.01em;color:var(--snow);overflow-wrap:anywhere}
.mailchip__hint{font-size:11px;letter-spacing:.14em;color:var(--mist);white-space:nowrap}
.mailchip[data-copied] .mailchip__hint{color:var(--cyan)}

.footer__meta{display:flex;flex-direction:column;gap:10px;font-size:13.5px;line-height:1.7}
.footer__meta-row{display:grid;grid-template-columns:56px minmax(0,1fr);gap:10px}
.footer__meta-row dt{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--mist);padding-top:3px}
.footer__meta-row dd{color:rgba(244,246,248,.86);margin:0}
.footer__note{font-size:12.5px;line-height:1.75;color:var(--mist);max-width:46ch}

.footer__nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,44px);align-content:start}
.footer__col{display:flex;flex-direction:column;gap:16px}
.footer__title{
  font-family:var(--font-display);font-size:15px;font-weight:900;
  letter-spacing:.16em;text-transform:uppercase;line-height:1.4;
  color:var(--gold-soft);
  padding-bottom:12px;border-bottom:1px solid rgba(201,164,92,.28);
}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__link{
  display:inline-flex;align-items:center;gap:0;
  padding:2px 0;font-size:14px;letter-spacing:.04em;
  color:rgba(244,246,248,.72);
  transition:color .22s var(--ease),gap .22s var(--ease);
}
.footer__link::before{content:"";width:0;height:1px;background:var(--orange);transition:width .22s var(--ease)}
.footer__link:hover{color:var(--snow);gap:8px}
.footer__link:hover::before{width:14px}

.footer__base{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-block:22px 26px;
  border-top:1px solid rgba(201,164,92,.2);
}
.footer__signoff{font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.2em;color:var(--gold-soft)}
.footer__legal{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--mist)}
.footer__icp{color:var(--mist)}

/* ---------- 08 响应式 ---------- */
@media (min-width:1025px){
  .topbar[data-compact] .brandmark__tag{opacity:0;transform:translateY(-3px)}
  .topbar[data-compact] .nav-rail__link{padding-block:6px}
}

@media (max-width:1024px){
  html{scroll-padding-top:112px}
  .topbar__inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding-block:12px}
  .topbar__id{grid-column:1;grid-row:1;gap:10px;flex-wrap:wrap}
  .nav-toggle{grid-column:2;grid-row:1;display:inline-flex}
  .topbar__panel{
    grid-column:1 / -1;grid-row:2;display:none;
    align-items:stretch;gap:14px;
    margin-top:14px;padding-top:16px;
    border-top:1px solid rgba(201,164,92,.22);
  }
  .topbar[data-open] .topbar__panel{display:flex}
  .nav-rail{flex-direction:column;flex-wrap:nowrap;align-items:stretch;gap:2px}
  .nav-rail__link{justify-content:flex-start;padding:12px 14px;border-radius:14px;font-size:15px}
  .nav-rail__link[aria-current="page"]{border-radius:14px}
  .topbar__actions{justify-content:stretch}
  .topbar__actions .quickslot{flex:1 1 100%;justify-content:center}
  .topbar__actions .btn{flex:1 1 46%}
  .topbar[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .topbar[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
  .topbar[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

  .footer__inner{grid-template-columns:minmax(0,1fr);gap:40px}
  .footer__lead{max-width:none}
  .footer__nav{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:900px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:720px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__base{flex-direction:column;align-items:flex-start}
  .to-top{padding:11px 15px;font-size:11px}
}

@media (max-width:560px){
  .homelink{display:none}
  .topbar__actions .btn{flex:1 1 100%}
  .mailchip{grid-template-columns:minmax(0,1fr) auto;row-gap:4px}
  .mailchip__label{grid-column:1 / -1}
  .footer__meta-row{grid-template-columns:minmax(0,1fr)}
  .footer__meta-row dt{padding-top:0}
}

@media (max-width:480px){
  .footer__nav{grid-template-columns:minmax(0,1fr)}
  .brandmark__tag{letter-spacing:.24em}
}

/* ---------- 09 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
  .footer__glow{animation:none}
  .has-js [data-reveal]{opacity:1;transform:none}
}