/* =========================================================
   新利赛场 · 共享样式表  /assets/site.css
   深空靛为底 · 熔金橙唯一高亮 · 青竹绿仅作状态色
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-900:#070E24;
  --ink-800:#0E1A3C;
  --ink-700:#132150;
  --steel:#22345F;
  --mist:#A9B8D9;
  --mist-dim:#7C8CB4;
  --white:#F2F6FF;
  --gold:#F0A22B;
  --gold-soft:#FFD98A;
  --jade:#3FA97B;
  --violet:#6C7FD8;

  --shell:1280px;
  --gutter:clamp(20px,4.5vw,64px);
  --header-h:122px;
  --radius:2px;
  --ease:cubic-bezier(.22,.68,.16,1);
  --shadow-card:0 1px 0 rgba(242,246,255,.03), 0 22px 48px -36px rgba(0,0,0,.95);

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;
}
@media (max-width:900px){
  :root{ --header-h:70px; }
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body,h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol,li,dl,dd{ margin:0; }
ul,ol{ padding:0; list-style:none; }
img,picture,svg,video{ display:block; max-width:100%; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
a{ color:inherit; text-decoration:none; }
table{ border-collapse:collapse; border-spacing:0; width:100%; }
hr{ border:0; height:1px; background:var(--steel); margin:0; }
::selection{ background:var(--gold); color:#0A1024; }

:focus-visible{
  outline:2px solid var(--gold-soft);
  outline-offset:3px;
  border-radius:1px;
}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}

/* ---------- 3. 基础排版与底色 ---------- */
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  color:var(--mist);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 520px at 84% -8%, rgba(240,162,43,.075), transparent 66%),
    radial-gradient(900px 620px at 4% 6%, rgba(108,127,216,.10), transparent 64%),
    linear-gradient(180deg, #070E24 0%, #070E24 72%, #050A18 100%);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5{
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.15;
  color:var(--white);
}
h1{ font-size:clamp(28px,4vw,46px); }
h2{ font-size:clamp(23px,2.8vw,34px); }
h3{ font-size:clamp(18px,1.8vw,22px); line-height:1.4; }
h4{ font-size:16px; letter-spacing:0; }
p{ text-wrap:pretty; }

.mono{ font-family:var(--font-mono); letter-spacing:-.01em; }
.muted{ color:var(--mist-dim); }
.accent{ color:var(--gold); }

/* ---------- 4. 布局基元 ---------- */
.container{
  width:min(100%, var(--shell));
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{ padding-block:clamp(56px,8vw,120px); }
.section--tight{ padding-block:clamp(32px,5vw,64px); }

.section-head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:baseline;
  gap:clamp(16px,3vw,40px);
  margin-bottom:clamp(28px,4vw,56px);
}
.section-index{
  font-family:var(--font-mono);
  font-size:clamp(40px,6vw,76px);
  font-weight:600;
  line-height:1;
  letter-spacing:-.04em;
  color:var(--gold);
}
@supports (-webkit-text-stroke:1px #000){
  .section-index{ color:transparent; -webkit-text-stroke:1px var(--gold); }
}
.section-title{
  font-weight:900;
  font-size:clamp(24px,3vw,38px);
  letter-spacing:-.02em;
  color:var(--white);
}
.section-kicker,
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--gold);
  margin-bottom:8px;
}
.section-head__note{
  margin-top:10px;
  font-size:14px;
  color:var(--mist-dim);
  max-width:52ch;
}

.lede{
  font-family:var(--font-serif);
  font-size:clamp(17px,1.6vw,21px);
  line-height:1.9;
  color:var(--mist);
  max-width:38ch;
}
.prose{ max-width:min(38em,100%); }
.prose p + p{ margin-top:1.1em; }

.divider{ height:1px; background:var(--steel); border:0; }

.grid{ display:grid; gap:clamp(16px,2vw,28px); }
.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--editorial{ grid-template-columns:repeat(12,minmax(0,1fr)); }

@media (max-width:1024px){
  .grid--4{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .grid--3{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:640px){
  .grid--2,.grid--3,.grid--4{ grid-template-columns:minmax(0,1fr); }
  .section-head{ grid-template-columns:minmax(0,1fr); gap:10px; }
  .section-index{ font-size:44px; }
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  background:transparent;
  color:var(--white);
  font-size:14px;
  font-weight:600;
  line-height:1;
  letter-spacing:.04em;
  transition:background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.btn:hover{ border-color:var(--gold); color:var(--gold-soft); }
.btn--primary{
  background:var(--gold);
  border-color:var(--gold);
  color:#0A1024;
}
.btn--primary:hover{
  background:var(--gold-soft);
  border-color:var(--gold-soft);
  color:#0A1024;
}
.btn--ghost{ background:rgba(14,26,60,.5); }
.btn--compact{ padding:10px 16px; font-size:13px; }
.btn__num{
  font-family:var(--font-mono);
  font-size:11px;
  opacity:.75;
}

/* ---------- 6. 卡片 / 面板 / 状态 ---------- */
.card{
  position:relative;
  padding:clamp(20px,2.4vw,32px);
  background:var(--ink-800);
  border:1px solid var(--steel);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
}
.card--accent{
  border-color:rgba(240,162,43,.5);
  background-image:linear-gradient(180deg, rgba(240,162,43,.10), rgba(14,26,60,.92));
}
.card__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist-dim);
}
.card__title{
  margin-top:10px;
  font-size:19px;
  font-weight:800;
  color:var(--white);
}

.panel{
  padding:clamp(18px,2vw,26px);
  border:1px solid var(--steel);
  border-radius:var(--radius);
  background-image:linear-gradient(180deg, rgba(14,26,60,.85), rgba(7,14,36,.6));
}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  margin-bottom:16px;
  border-bottom:1px solid var(--steel);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist-dim);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist);
}
.tag--gold{
  color:var(--gold-soft);
  border-color:rgba(240,162,43,.45);
  background:rgba(240,162,43,.08);
}
.tag--jade{
  color:var(--jade);
  border-color:rgba(63,169,123,.42);
  background:rgba(63,169,123,.08);
}

.status-dot{
  display:inline-block;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--jade);
  box-shadow:0 0 0 3px rgba(63,169,123,.16);
}

.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(28px,3.4vw,44px);
  line-height:1;
  color:var(--white);
}
.stat__label{
  margin-top:10px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist-dim);
}

/* ---------- 7. 数据表 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  background:rgba(14,26,60,.6);
}
.table{ font-size:15px; }
.table th,
.table td{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--steel);
  white-space:nowrap;
}
.table thead th{
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--mist);
  background:rgba(34,52,95,.4);
}
.table tbody tr:last-child td{ border-bottom:0; }
.table td:first-child,
.table th:first-child{ color:var(--white); }
.table .num{
  font-family:var(--font-mono);
  color:var(--white);
  letter-spacing:-.01em;
}

/* ---------- 8. 图片容器（供页面阶段放置占位） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  background:var(--ink-800);
}
.media-frame > img,
.media-frame > picture > img,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg, rgba(7,14,36,0) 48%, rgba(7,14,36,.78) 100%);
}
.media-frame--plain::after{ display:none; }
.media-frame--21x9{ aspect-ratio:21/9; }
.media-frame--16x9{ aspect-ratio:16/9; }
.media-frame--4x5{ aspect-ratio:4/5; }
.media-frame--1x1{ aspect-ratio:1/1; }
.media-frame--tall{ aspect-ratio:3/4; }
.media-frame--placeholder{
  background-image:
    radial-gradient(120% 80% at 18% 0%, rgba(240,162,43,.16), transparent 62%),
    radial-gradient(90% 70% at 100% 100%, rgba(108,127,216,.18), transparent 62%),
    repeating-linear-gradient(90deg, rgba(34,52,95,.5) 0 1px, transparent 1px 56px),
    linear-gradient(180deg, rgba(14,26,60,.9), rgba(7,14,36,.9));
}
.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:12px 16px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}
@media (max-width:640px){
  .media-frame--21x9{ aspect-ratio:16/9; }
}

/* ---------- 9. 分段切换（可访问标签页） ---------- */
.tablist{
  display:flex;
  flex-wrap:wrap;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  background:rgba(14,26,60,.5);
}
.tab{
  padding:14px 20px;
  border-right:1px solid var(--steel);
  background:transparent;
  color:var(--mist);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1;
  transition:background-color .2s var(--ease), color .2s var(--ease);
}
.tab:last-child{ border-right:0; }
.tab:hover{ color:var(--white); }
.tab[aria-selected="true"]{
  background:var(--gold);
  color:#0A1024;
}
.tabpanel[hidden]{ display:none; }
.tabpanel:not([hidden]){ animation:panel-in .28s var(--ease) both; }
@keyframes panel-in{
  from{ opacity:0; transform:translateY(8px); }
  to{ opacity:1; transform:none; }
}

/* ---------- 10. 滚动显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .55s var(--ease), transform .55s var(--ease);
}
.reveal.is-visible{ opacity:1; transform:none; }

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs{
  font-size:13px;
  color:var(--mist-dim);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumbs li{ display:flex; align-items:center; gap:8px; }
.breadcrumbs li + li::before{
  content:"/";
  color:var(--steel);
}
.breadcrumbs a{
  color:var(--mist-dim);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.breadcrumbs a:hover{
  color:var(--white);
  border-bottom-color:var(--violet);
}
.breadcrumbs [aria-current="page"]{ color:var(--white); }

/* ---------- 12. 主内容容器与固定页头的偏移 ---------- */
#main-content{
  display:block;
  padding-top:var(--header-h);
  scroll-margin-top:calc(var(--header-h) + 24px);
}
#main-content[data-bleed]{ padding-top:0; }

/* ---------- 13. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 16px;
  border-radius:var(--radius);
  background:var(--gold);
  color:#0A1024;
  font-size:14px;
  font-weight:600;
  line-height:1;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{ transform:translateY(0); }

/* ---------- 14. 页头 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  color:var(--white);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .24s var(--ease), border-color .24s var(--ease), backdrop-filter .24s var(--ease);
}
.site-header[data-scrolled="true"]{
  background:rgba(7,14,36,.94);
  border-bottom-color:var(--steel);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-frame{
  width:min(100%, var(--shell));
  margin-inline:auto;
}

.header-tier{
  display:flex;
  align-items:center;
  gap:18px;
  padding:14px var(--gutter);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.brand__mark{
  flex:0 0 auto;
  padding:7px 9px;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  background:linear-gradient(180deg, rgba(240,162,43,.14), rgba(240,162,43,0));
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  line-height:1;
}
.brand__text{ display:block; min-width:0; }
.brand__name{
  display:block;
  font-size:20px;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.1;
  color:var(--white);
}
.brand__line{
  display:block;
  margin-top:3px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist-dim);
}
.brand--footer .brand__name{ font-size:19px; }

/* 赛季刻度 */
.season-marker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:7px 12px;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
  white-space:nowrap;
}
.season-marker__dot{
  display:inline-block;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--jade);
  box-shadow:0 0 0 3px rgba(63,169,123,.18);
}

.header-actions{
  display:inline-flex;
  align-items:center;
  gap:12px;
}

/* 移动端开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  color:var(--mist);
  font-size:13px;
  letter-spacing:.06em;
  line-height:1;
}
.nav-toggle:hover{ color:var(--white); border-color:var(--gold); }
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:1px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1px;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle__bars::before{ top:-5px; }
.nav-toggle__bars::after{ top:5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{ background:transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{ transform:translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{ transform:translateY(-5px) rotate(-45deg); }

/* 主导航条 */
.site-nav{
  border-top:1px solid rgba(34,52,95,.55);
  padding-inline:var(--gutter);
  transition:border-color .24s var(--ease);
}
.site-header[data-scrolled="true"] .site-nav{ border-top-color:var(--steel); }
.nav-list{
  display:flex;
  flex-wrap:wrap;
}
.nav-item{ position:relative; }
.nav-item + .nav-item::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:1px;
  height:14px;
  background:var(--steel);
  transform:translateY(-50%);
}
.nav-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:14px 22px;
  color:var(--mist);
  font-size:14px;
  letter-spacing:.04em;
  line-height:1.2;
  transition:color .2s var(--ease);
}
.nav-item:first-child .nav-link{ padding-left:0; }
.nav-link:hover{ color:var(--white); }
.nav-link__idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:#5A6E9C;
}
.nav-link--pinned{ color:var(--white); }
.nav-link--pinned .nav-link__idx{ color:var(--gold); }
.nav-item--pinned::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:0;
}
.nav-link[aria-current="page"]{ color:var(--white); }
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:22px;
  right:22px;
  bottom:-1px;
  height:2px;
  background:var(--gold);
}
.nav-item:first-child .nav-link[aria-current="page"]::after{ left:0; }

/* 阅读进度 */
.header-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  display:block;
  width:0;
  height:2px;
  background:linear-gradient(90deg, var(--gold), var(--gold-soft));
  opacity:.9;
  transition:width .12s linear;
}

/* ---------- 15. 页头响应式 ---------- */
@media (max-width:900px){
  .header-tier{ padding:12px var(--gutter); gap:12px; }
  .brand__mark{ display:none; }
  .brand__line{ display:none; }
  .season-marker{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .header-actions{ margin-left:auto; }

  .site-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    padding-inline:0;
    background:var(--ink-800);
    border-top:1px solid var(--steel);
    border-bottom:1px solid var(--steel);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .2s var(--ease), transform .2s var(--ease), visibility .2s var(--ease);
  }
  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .nav-list{ flex-direction:column; }
  .nav-item + .nav-item::before{
    left:var(--gutter);
    right:var(--gutter);
    top:0;
    width:auto;
    height:1px;
    transform:none;
  }
  .nav-link,
  .nav-item:first-child .nav-link{
    padding:16px var(--gutter);
    font-size:15px;
  }
  .nav-link[aria-current="page"]::after{
    left:var(--gutter);
    right:var(--gutter);
    bottom:0;
    height:1px;
  }
  body.is-nav-open{ overflow:hidden; }
}

@media (max-width:560px){
  .header-actions .btn--compact{ padding:9px 12px; font-size:12px; letter-spacing:0; }
  .nav-toggle__label{ display:none; }
  .brand__name{ font-size:18px; }
}

/* ---------- 16. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,10vw,140px);
  border-top:1px solid var(--steel);
  background-image:linear-gradient(180deg, rgba(14,26,60,.42), rgba(7,14,36,.98) 62%);
  color:var(--mist);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background-image:repeating-linear-gradient(90deg, var(--gold) 0 22px, transparent 22px 64px);
  opacity:.45;
}
.footer-frame{
  width:min(100%, var(--shell));
  margin-inline:auto;
  padding:clamp(40px,6vw,84px) var(--gutter) 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(260px,1.6fr) repeat(3, minmax(140px,1fr));
  gap:clamp(24px,4vw,56px);
}
.footer-brand__note{
  margin-top:16px;
  max-width:34ch;
  font-size:14px;
  line-height:1.85;
  color:var(--mist-dim);
}
.footer-season{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist-dim);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:22px;
  padding:10px 16px;
  border:1px solid var(--steel);
  border-radius:var(--radius);
  color:var(--mist);
  font-size:13px;
  letter-spacing:.06em;
  line-height:1;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.to-top::before{
  content:"";
  width:0;
  height:0;
  border-left:4px solid transparent;
  border-right:4px solid transparent;
  border-bottom:6px solid currentColor;
}
.to-top:hover{ color:var(--gold-soft); border-color:var(--gold); }

.footer-col__title{
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--white);
  margin-bottom:16px;
}
.footer-links{ display:grid; gap:10px; }
.footer-link{
  display:inline-block;
  font-size:14px;
  color:var(--mist-dim);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.footer-link:hover{
  color:var(--white);
  border-bottom-color:var(--violet);
}

.footer-contact{
  margin-top:clamp(32px,5vw,64px);
  padding-top:24px;
  border-top:1px solid var(--steel);
  display:grid;
  gap:8px;
}
.footer-contact__line{
  font-size:14px;
  color:var(--mist);
}
.footer-contact__line--muted{
  font-size:13px;
  color:var(--mist-dim);
  max-width:60ch;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(28px,4vw,48px);
  padding-top:20px;
  border-top:1px solid rgba(34,52,95,.6);
}
.footer-legal__line{
  font-size:13px;
  letter-spacing:.02em;
  color:#67769C;
}

@media (max-width:900px){
  .footer-top{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-brand{ grid-column:1 / -1; }
}
@media (max-width:560px){
  .footer-top{ grid-template-columns:minmax(0,1fr); gap:28px; }
  .footer-legal{ flex-direction:column; }
}

/* ---------- 17. 动效降级 ---------- */
@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; }
  .site-nav{ transition:none; }
  .skip-link{ transition:none; }
}