/* ============================================================
   华体赛事 · 共享样式 /assets/site.css
   赛季数据展览：深草绿展墙 + 竞技橙标记 + 粗野主义硬阴影
   ============================================================ */

:root{
  --green-900:#0B3B2E;
  --green-800:#124F3C;
  --green-600:#1F6F55;
  --orange:#F26522;
  --orange-light:#FF8A3D;
  --cream:#F5F1E8;
  --silver:#C7CBC9;
  --silver-dark:#5C6B65;
  --wine:#6E1F3A;
  --indigo:#2A2A6E;
  --ink:#101820;

  --font-heading:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:"Source Han Serif SC","Noto Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --header-h:72px;
  --gutter:clamp(18px,4vw,48px);
  --maxw:1280px;
  --border:2px solid var(--ink);
  --shadow-hard:6px 6px 0 var(--ink);
  --shadow-tight:4px 4px 0 var(--ink);
  --radius:3px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit}
table{border-collapse:collapse;width:100%}

/* ---------- base typography ---------- */
body{
  background:var(--cream);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,.section-title,.brand-line,.footer-mark{
  font-family:var(--font-heading);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.12;
}
h1{font-size:clamp(38px,7vw,92px)}
h2{font-size:clamp(28px,4.2vw,54px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:clamp(17px,1.6vw,21px)}
p{max-width:44em}
strong,b{font-weight:800}
code,kbd,samp{font-family:var(--font-mono);font-size:.92em}

#main-content{display:block;scroll-margin-top:calc(var(--header-h) + 16px)}

/* ---------- a11y ---------- */
:focus-visible{outline:3px solid var(--orange-light);outline-offset:3px;border-radius:2px}
.skip-link{
  position:absolute;left:14px;top:-90px;z-index:200;
  padding:12px 20px;background:var(--orange);color:var(--ink);
  font-family:var(--font-heading);font-weight:900;font-size:15px;
  text-decoration:none;border:var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-tight);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- layout ---------- */
.container{
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding-inline:var(--gutter);
}
.header-offset{padding-top:var(--header-h)}
.section{padding-block:clamp(56px,8vw,120px)}
.section--tight{padding-block:clamp(36px,5vw,72px)}
.section--dark{background:var(--green-900);color:var(--cream)}
.section--mid{background:var(--green-800);color:var(--cream)}
.section--wine{background:var(--wine);color:var(--cream)}
.section--indigo{background:var(--indigo);color:var(--cream)}
.section--silver{background:var(--silver)}
.section--dark p,.section--mid p,.section--wine p,.section--indigo p{color:inherit}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--bento{grid-template-columns:repeat(6,1fr)}
.grid--split{grid-template-columns:22fr 78fr;gap:clamp(18px,3vw,44px);align-items:start}
.grid--split-wide{grid-template-columns:32fr 68fr}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}

/* ---------- 展签 / 章节头 ---------- */
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:clamp(12px,2vw,28px);
  margin-bottom:clamp(24px,3.4vw,48px);
}
.section-number{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(40px,7vw,104px);line-height:.82;
  color:var(--orange);letter-spacing:-.04em;
}
.section-number--outline{
  color:transparent;-webkit-text-stroke:2px var(--silver-dark);
}
.section-title{font-size:clamp(28px,4.4vw,58px);max-width:22ch}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--orange);
  margin-bottom:10px;
}
.section--dark .eyebrow,.section--mid .eyebrow{color:var(--orange-light)}
.lead{
  font-size:clamp(17px,1.5vw,20px);line-height:1.7;
  max-width:34em;
}
.vertical-note{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.3em;
  text-transform:uppercase;color:var(--silver-dark);
  max-height:32vh;white-space:nowrap;
}
.section--dark .vertical-note,.section--mid .vertical-note,
.section--wine .vertical-note,.section--indigo .vertical-note{color:var(--silver)}
.exhibit-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink);
  background:var(--cream);border:var(--border);border-radius:2px;
  padding:6px 12px;box-shadow:3px 3px 0 var(--ink);
}
.exhibit-label--orange{background:var(--orange)}
.exhibit-label--dark{background:var(--green-900);color:var(--cream)}

/* ---------- 正文段 ---------- */
.prose{
  max-width:34em;font-size:clamp(16px,1.15vw,18px);
  line-height:1.75;color:var(--ink);
}
.prose p+p{margin-top:1.05em}
.prose h3{margin-block:1.6em .6em}
.section--dark .prose,.section--mid .prose,
.section--wine .prose,.section--indigo .prose{color:var(--cream)}
.prose--wide{max-width:46em}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding-block:18px 0;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.1em;
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;color:var(--silver-dark)}
.section--dark .breadcrumb-list,.section--mid .breadcrumb-list,
.section--wine .breadcrumb-list,.section--indigo .breadcrumb-list{color:var(--silver)}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:var(--orange)}
.breadcrumb-item a{text-decoration:none;border-bottom:1px solid currentColor}
.breadcrumb-item a:hover{color:var(--orange)}
.breadcrumb-item[aria-current="page"]{color:var(--orange)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-family:var(--font-heading);font-weight:900;
  font-size:15px;line-height:1;text-decoration:none;cursor:pointer;
  border:var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-tight);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),
             background-color .16s var(--ease),color .16s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn-primary{background:var(--orange);color:var(--ink)}
.btn-primary:hover{background:var(--orange-light)}
.btn-ghost{background:transparent;color:var(--cream);border-color:var(--cream);box-shadow:4px 4px 0 rgba(199,203,201,.45)}
.btn-ghost:hover{background:rgba(245,241,232,.12);box-shadow:6px 6px 0 rgba(199,203,201,.6)}
.btn-dark{background:var(--cream);color:var(--ink)}
.btn-dark:hover{background:#fff}
.btn-block{width:100%}
.btn-sm{padding:9px 16px;font-size:13.5px}

/* ---------- 卡片 / 数据块 ---------- */
.card{
  background:var(--cream);color:var(--ink);
  border:var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
  padding:clamp(18px,2.4vw,30px);
}
.card--dark{background:var(--green-800);color:var(--cream)}
.card--wine{background:var(--wine);color:var(--cream)}
.card--indigo{background:var(--indigo);color:var(--cream)}
.card--flat{box-shadow:none}
.card>*+*{margin-top:12px}

.data-card{
  position:relative;
  background:var(--green-900);color:var(--cream);
  border:var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
  padding:clamp(18px,2.4vw,30px);
}
.data-card>*+*{margin-top:10px}
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{
  font-family:var(--font-mono);font-weight:700;line-height:1;
  font-size:clamp(30px,4.6vw,58px);letter-spacing:-.03em;
  color:var(--orange);
}
.stat-value--cream{color:var(--cream)}
.stat-label{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.12em;
  color:var(--silver-dark);text-transform:uppercase;
}
.section--dark .stat-label,.data-card .stat-label,.section--mid .stat-label{color:var(--silver)}

/* ---------- 时间轴窄栏 ---------- */
.timeline-rail{
  border-left:3px solid var(--green-600);
  padding-left:clamp(12px,1.6vw,20px);
  display:flex;flex-direction:column;gap:clamp(18px,3vw,40px);
}
.timeline-node{position:relative;font-family:var(--font-mono)}
.timeline-node::before{
  content:"";position:absolute;left:calc(-1 * clamp(12px,1.6vw,20px) - 9px);
  top:.45em;width:12px;height:12px;border:2px solid var(--ink);
  background:var(--cream);border-radius:50%;
}
.timeline-node.is-active::before{background:var(--orange)}
.timeline-year{font-size:clamp(20px,2vw,28px);font-weight:700;line-height:1}
.timeline-meta{font-size:12px;letter-spacing:.14em;color:var(--silver-dark)}

/* ---------- 图片容器基础规则 ---------- */
.figure-media{
  position:relative;display:block;overflow:hidden;
  background:var(--green-800);
  border:var(--border);border-radius:2px;
  box-shadow:var(--shadow-hard);
}
.figure-media img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(1) contrast(1.08);
  transition:filter .45s var(--ease),transform .5s var(--ease);
}
.figure-media[data-tone="color"] img{filter:saturate(1.06) contrast(1.05)}
.figure-media:hover img{transform:scale(1.04)}
.figure-media--wide{aspect-ratio:16/9}
.figure-media--portrait{aspect-ratio:3/4}
.figure-media--square{aspect-ratio:1/1}
.figure-media--tall{aspect-ratio:2/3}
.figure-media__badge{
  position:absolute;left:0;bottom:0;z-index:2;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  text-transform:uppercase;padding:6px 10px;
  background:var(--ink);color:var(--cream);
}
.figure-caption{
  margin-top:10px;font-family:var(--font-mono);
  font-size:12.5px;letter-spacing:.06em;color:var(--silver-dark);
}
.section--dark .figure-caption,.section--mid .figure-caption,
.section--wine .figure-caption,.section--indigo .figure-caption{color:var(--silver)}

/* ---------- 表格 ---------- */
.data-table{font-family:var(--font-mono);font-size:14px}
.data-table th,.data-table td{
  padding:10px 12px;text-align:left;
  border-bottom:1px solid var(--silver);
}
.data-table thead th{
  background:var(--silver);color:var(--ink);
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  border-bottom:var(--border);
}
.data-table tbody tr:hover{background:rgba(242,101,34,.09)}

/* ---------- 折叠面板 ---------- */
.disclosure{border:var(--border);border-radius:var(--radius);background:var(--cream);box-shadow:var(--shadow-tight)}
.disclosure+.disclosure{margin-top:14px}
.disclosure>summary{
  cursor:pointer;list-style:none;
  padding:14px 18px;font-family:var(--font-heading);font-weight:900;
  font-size:clamp(16px,1.4vw,19px);
  background:var(--green-600);color:var(--cream);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.disclosure>summary::-webkit-details-marker{display:none}
.disclosure>summary::after{content:"＋";font-family:var(--font-mono);color:var(--orange-light)}
.disclosure[open]>summary::after{content:"－"}
.disclosure__body{padding:16px 18px;border-top:var(--border)}

/* ---------- 标签页 ---------- */
.tabs{display:block}
.tab-list{
  display:flex;flex-wrap:wrap;gap:8px;
  border-bottom:var(--border);
  padding-bottom:10px;margin-bottom:clamp(18px,2.4vw,30px);
}
.tab-btn{
  appearance:none;cursor:pointer;
  background:transparent;color:inherit;
  border:2px solid var(--ink);border-radius:2px;
  padding:9px 16px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.tab-btn:hover{background:var(--orange-light)}
.tab-btn[aria-selected="true"]{
  background:var(--orange);color:var(--ink);
  box-shadow:3px 3px 0 var(--ink);
  transform:translate(-1px,-1px);
}
.section--dark .tab-btn,.section--mid .tab-btn,
.section--wine .tab-btn,.section--indigo .tab-btn{border-color:var(--silver);color:var(--cream)}
.section--dark .tab-btn:hover,.section--mid .tab-btn:hover{border-color:var(--orange-light);color:var(--orange-light);background:transparent}
.section--dark .tab-btn[aria-selected="true"],.section--mid .tab-btn[aria-selected="true"]{color:var(--ink);background:var(--orange);border-color:var(--ink)}
.tab-panel{animation:tabIn .18s var(--ease) both}
.tab-panel[hidden]{display:none}
@keyframes tabIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 显现动画 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.headline-mask{overflow:hidden;display:block}
.headline-line{display:block;transform:translateY(105%);opacity:0;transition:transform .72s var(--ease),opacity .6s var(--ease)}
.headline-line.is-visible{transform:none;opacity:1}

/* ============================================================
   头部：透明叠加导航 → 实色阅读条
   ============================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:linear-gradient(180deg,rgba(11,59,46,.94) 0%,rgba(11,59,46,.72) 58%,rgba(11,59,46,0) 100%);
  border-bottom:2px solid transparent;
  transition:background-color .28s var(--ease),border-color .28s var(--ease),
             box-shadow .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header[data-scrolled="true"]{
  background:var(--green-900);
  border-bottom-color:var(--ink);
  box-shadow:0 6px 0 rgba(16,24,32,.28);
}
.site-header[data-open="true"]{background:var(--green-900)}

.header-inner{
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding-inline:var(--gutter);
  min-height:var(--header-h);
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
}

/* 品牌 */
.brand{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--cream);flex:0 0 auto;
  min-width:0;
}
.brand-mark{
  flex:0 0 auto;display:grid;place-items:center;
  width:40px;height:40px;
  background:var(--orange);color:var(--ink);
  font-family:var(--font-heading);font-weight:900;font-size:22px;line-height:1;
  border:var(--border);border-radius:2px;
  box-shadow:3px 3px 0 rgba(16,24,32,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.18;min-width:0}
.brand-line{
  font-size:clamp(14px,1.4vw,17px);letter-spacing:.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.brand-tagline{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--silver);white-space:nowrap;
}

/* 主导航（桌面） */
.primary-nav{
  margin-left:auto;
  display:flex;align-items:center;gap:clamp(8px,1.6vw,22px);
}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 11px;text-decoration:none;
  font-family:var(--font-heading);font-weight:800;font-size:15px;
  letter-spacing:.01em;color:var(--cream);
  border:2px solid transparent;border-radius:2px;
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.nav-link:hover{color:var(--orange-light);border-color:rgba(255,138,61,.45)}
.nav-link[aria-current="page"]{
  color:var(--orange);border-color:var(--orange);
  background:rgba(242,101,34,.14);
}
.nav-index{
  font-family:var(--font-mono);font-size:10.5px;font-weight:400;
  color:var(--silver);opacity:.8;
}
.nav-link[aria-current="page"] .nav-index{color:var(--orange-light);opacity:1}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* 移动按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  background:var(--green-800);color:var(--cream);
  border:var(--border);border-radius:2px;
  padding:9px 13px;cursor:pointer;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  box-shadow:3px 3px 0 rgba(16,24,32,.6);
}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:20px}
.nav-toggle-bars i{display:block;height:2px;background:var(--orange);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 滚动进度 */
.scroll-progress{
  position:absolute;left:0;bottom:-2px;height:3px;width:100%;
  background:var(--orange);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
  pointer-events:none;
}

@media (max-width:1100px){
  .nav-link{padding:9px 8px;font-size:14px}
  .header-actions .btn{padding:10px 14px;font-size:14px}
}
@media (max-width:960px){
  :root{--header-h:64px}
  .nav-toggle{display:inline-flex}
  .brand-tagline{display:none}
  .primary-nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    margin-left:0;display:block;
    background:var(--green-900);
    border-top:2px solid var(--ink);
    border-bottom:var(--border);
    box-shadow:0 8px 0 rgba(16,24,32,.4);
    padding:14px var(--gutter) 26px;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s linear;
  }
  .site-header[data-open="true"] .primary-nav{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    justify-content:space-between;width:100%;
    padding:15px 10px;border:0;border-bottom:2px solid rgba(199,203,201,.16);
    border-radius:0;font-size:16px;
  }
  .nav-link[aria-current="page"]{background:rgba(242,101,34,.14)}
  .nav-index{order:2}
  .header-actions{flex-direction:column;align-items:stretch;margin-top:18px}
  .header-actions .btn{width:100%}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--green-900);color:var(--cream);
  border-top:var(--border);
}
.footer-inner{
  position:relative;z-index:2;
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:clamp(40px,6vw,80px) var(--gutter) clamp(20px,3vw,32px);
}
.footer-top{
  display:grid;
  grid-template-columns:1.35fr .95fr 1.1fr;
  gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(28px,4vw,48px);
  border-bottom:2px solid rgba(199,203,201,.24);
}
.footer-brand{display:flex;flex-direction:column;gap:10px}
.footer-mark{
  font-size:clamp(26px,3vw,38px);color:var(--cream);line-height:1.05;
}
.footer-mark::after{
  content:"";display:block;width:64px;height:5px;
  background:var(--orange);margin-top:12px;
}
.footer-line{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--orange-light);
}
.footer-note{
  font-size:15px;line-height:1.75;color:var(--silver);
  max-width:32em;
}
.footer-col-title{
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.24em;text-transform:uppercase;
  color:var(--silver);margin-bottom:16px;
}
.footer-links{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px 18px;
}
.footer-link{
  display:inline-block;text-decoration:none;
  font-family:var(--font-heading);font-weight:700;font-size:15px;
  color:var(--cream);
  border-bottom:2px solid transparent;padding-bottom:2px;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--orange-light);border-bottom-color:var(--orange)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact-item{
  display:flex;flex-direction:column;gap:3px;
  font-family:var(--font-mono);font-size:14px;color:var(--cream);
  line-height:1.6;max-width:32ch;word-break:break-word;
}
.footer-contact-term{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--orange-light);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding-top:clamp(18px,2.6vw,28px);
}
.footer-legal{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;
  color:var(--silver);max-width:none;
}
.footer-signoff{
  font-family:var(--font-heading);font-weight:900;font-size:13px;
  letter-spacing:.06em;color:var(--orange);
}
.footer-watermark{
  position:absolute;right:-.04em;bottom:-.26em;z-index:1;
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(80px,17vw,220px);line-height:.8;letter-spacing:-.05em;
  color:rgba(199,203,201,.07);
  pointer-events:none;user-select:none;
}

@media (max-width:960px){
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:620px){
  .footer-top{grid-template-columns:1fr}
  .footer-links{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- 通用响应式网格降级 ---------- */
@media (max-width:900px){
  .grid--bento{grid-template-columns:repeat(2,1fr)}
  .span-3,.span-4{grid-column:span 2}
  .span-6{grid-column:span 2}
  .grid--split,.grid--split-wide{grid-template-columns:1fr}
  .vertical-note{writing-mode:horizontal-tb;letter-spacing:.2em;max-height:none}
}
@media (max-width:560px){
  .grid--bento{grid-template-columns:1fr}
  .span-2,.span-3,.span-4,.span-6{grid-column:span 1}
  .section-head{flex-direction:column;align-items:flex-start}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .reveal{opacity:1;transform:none}
  .headline-line{opacity:1;transform:none}
  .btn:hover{transform:none;box-shadow:var(--shadow-tight)}
  .tab-panel{animation:none}
}