/* ============================================================
   谈球吧体育 · 共享站点样式 /assets/site.css
   深蓝夜场底 + 荧光橙行动色 + 电光青数据色
   ============================================================ */

:root{
  --night:#061A32;
  --panel:#0D2745;
  --panel-deep:#08203B;
  --line:#1D4E7A;
  --line-soft:rgba(29,78,122,.55);
  --orange:#FF6A2B;
  --orange-soft:#FF9E6B;
  --cyan:#21E6D2;
  --cyan-deep:#0C8C86;
  --ink:#EAF2FF;
  --muted:#9CB4D3;
  --serif-ink:#FDF4EA;
  --amber:#FFD166;
  --rail-w:84px;
  --topbar-h:56px;
  --radius-l:28px;
  --radius-m:20px;
  --radius-s:12px;
  --wrap:1180px;
  --sans:"Inter","Noto Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  padding-left:var(--rail-w);
  font-family:var(--sans);
  font-size:1rem;
  font-weight:400;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--night);
  background-image:
    radial-gradient(1100px 620px at 84% -10%, rgba(33,230,210,.10), transparent 68%),
    radial-gradient(780px 640px at -8% 104%, rgba(255,106,43,.12), transparent 66%),
    linear-gradient(rgba(29,78,122,.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29,78,122,.13) 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
}

img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
svg{display:block}

h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-family:var(--serif);
  font-weight:600;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--serif-ink);
}

::selection{background:rgba(255,106,43,.85);color:#08131F}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:calc(var(--rail-w) + 14px);
  z-index:200;
  padding:.7rem 1.2rem;
  border-radius:999px;
  background:var(--orange);
  color:#08131F;
  font-size:.875rem;
  font-weight:600;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- 顶部细条（移动端） ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  height:var(--topbar-h);
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 14px;
  background:rgba(6,26,50,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.topbar-brand{display:inline-flex;align-items:center;gap:10px}
.topbar-title{
  font-family:var(--serif);
  font-size:1rem;
  letter-spacing:.06em;
  color:var(--serif-ink);
}

.brand-mark{
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:13px;
  background:linear-gradient(140deg,var(--orange),#FF4E00);
  color:#08131F;
  font-family:var(--serif);
  font-size:1.05rem;
  font-weight:700;
  line-height:1;
  box-shadow:0 0 0 1px rgba(255,158,107,.45), 0 14px 30px -16px rgba(255,106,43,.9);
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:8px 15px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(13,39,69,.85);
  color:var(--ink);
  font-size:.8125rem;
  font-weight:500;
  letter-spacing:.1em;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1.5px;
  border-radius:2px;
  background:var(--cyan);
  transition:top .22s var(--ease),transform .22s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{top:8px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{top:4px;transform:rotate(-45deg)}

/* ---------- 侧边轨道导航 ---------- */
.site-header{position:relative;z-index:110}

.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:110;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:18px;
  width:var(--rail-w);
  padding:22px 8px 20px;
  overflow-y:auto;
  overflow-x:hidden;
  background:linear-gradient(180deg,#08203B 0%, #061A32 58%, #05162E 100%);
  border-right:1px solid var(--line);
  transition:width .28s var(--ease),box-shadow .28s var(--ease);
}
.rail::-webkit-scrollbar{width:0;height:0}

.rail-brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  flex:none;
  transition:gap .22s var(--ease);
}
.rail-brand-name{
  writing-mode:vertical-rl;
  font-family:var(--serif);
  font-size:.78rem;
  letter-spacing:.2em;
  color:var(--serif-ink);
  transition:letter-spacing .22s var(--ease);
}

.rail-nav{width:100%;flex:1 1 auto;display:flex;align-items:center}
.rail-list{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  width:100%;
}
.rail-item{width:100%}

.rail-link{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  width:100%;
  padding:12px 6px;
  border-radius:16px;
  color:var(--muted);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.rail-link::before{
  content:"";
  position:absolute;
  left:1px;
  top:50%;
  width:3px;
  height:0;
  border-radius:999px;
  background:var(--orange);
  transform:translateY(-50%);
  transition:height .24s var(--ease);
}
.rail-link:hover,
.rail-link:focus-visible{color:var(--ink);background:rgba(33,230,210,.07)}
.rail-link:hover::before{height:24px}
.rail-link[aria-current="page"]{color:var(--ink);background:rgba(255,106,43,.13)}
.rail-link[aria-current="page"]::before{height:36px}
.rail-link[aria-current="page"] .rail-link-icon{color:var(--orange)}

.rail-link-icon{
  width:22px;
  height:22px;
  color:var(--cyan);
  fill:none;
  stroke:currentColor;
  stroke-width:1.5;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:color .18s var(--ease);
}
.rail-link-text{
  writing-mode:vertical-rl;
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.14em;
  line-height:1;
  white-space:nowrap;
}

.rail-foot{flex:none;width:100%;display:flex;justify-content:center}
.rail-cta{
  display:block;
  padding:14px 9px;
  border:1px solid rgba(255,106,43,.55);
  border-radius:999px;
  writing-mode:vertical-rl;
  text-align:center;
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--ink);
  background:linear-gradient(160deg,rgba(255,106,43,.22),rgba(255,106,43,.06));
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.rail-cta:hover{border-color:var(--orange);background:rgba(255,106,43,.28)}

/* 轨道展开态：桌面悬浮 / 键盘聚焦 */
.rail:hover,
.rail:focus-within{
  width:210px;
  box-shadow:30px 0 70px -40px rgba(0,0,0,.95);
}
.rail:hover .rail-brand,
.rail:focus-within .rail-brand{flex-direction:row;align-items:center;gap:12px;padding-left:10px}
.rail:hover .rail-brand-name,
.rail:focus-within .rail-brand-name{writing-mode:horizontal-tb;font-size:.95rem;letter-spacing:.08em}
.rail:hover .rail-link,
.rail:focus-within .rail-link{flex-direction:row;justify-content:flex-start;gap:12px;padding:11px 14px}
.rail:hover .rail-link-text,
.rail:focus-within .rail-link-text{writing-mode:horizontal-tb;font-size:.9rem;letter-spacing:.06em}
.rail:hover .rail-cta,
.rail:focus-within .rail-cta{width:100%;writing-mode:horizontal-tb;padding:11px 16px;font-size:.85rem;letter-spacing:.08em}

.nav-scrim{display:none}

/* ---------- 主体容器 ---------- */
.site-main{display:block;min-height:60vh}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding-left:clamp(18px,4vw,48px);
  padding-right:clamp(18px,4vw,48px);
}

.section{
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(44px,7vw,96px) clamp(18px,4vw,48px);
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 24px;
  margin-bottom:clamp(20px,3vw,36px);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--orange)}
.section-title{
  margin:0;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(1.75rem,3.2vw,3rem);
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--serif-ink);
}
.section-lede{max-width:62ch;margin:0;color:var(--muted)}

.hairline{
  height:1px;
  border:0;
  margin:clamp(24px,4vw,48px) 0;
  background:linear-gradient(90deg,transparent,rgba(29,78,122,.9),transparent);
}

.lede{max-width:56ch;font-size:clamp(1.05rem,1.4vw,1.25rem);line-height:1.7;color:var(--ink)}
.note{font-size:.875rem;color:var(--muted)}
.num,.mono{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.01em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.72rem 1.3rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(13,39,69,.72);
  color:var(--ink);
  font-size:.9375rem;
  font-weight:500;
  line-height:1.2;
  transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--cyan);color:var(--cyan)}
.btn--primary{
  border-color:transparent;
  background:linear-gradient(135deg,var(--orange),#FF4E00);
  color:#08131F;
  font-weight:600;
}
.btn--primary:hover{color:#08131F;box-shadow:0 18px 36px -18px rgba(255,106,43,.95)}
.btn--ghost{background:transparent}
.btn--quiet{
  padding-left:.3rem;
  padding-right:.3rem;
  border-color:transparent;
  background:transparent;
  color:var(--cyan);
}
.btn--quiet:hover{transform:none;color:var(--orange-soft)}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(16px,2.4vw,28px) clamp(18px,4vw,48px) 0;
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;font-size:.8125rem;color:var(--muted)}
.breadcrumb-item{display:inline-flex;align-items:center;gap:.55rem}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--line)}
.breadcrumb-item a{transition:color .18s var(--ease)}
.breadcrumb-item a:hover{color:var(--cyan)}
.breadcrumb-item [aria-current="page"]{color:var(--ink)}

/* ---------- 网格与 Bento ---------- */
.grid{display:grid;gap:clamp(14px,1.8vw,22px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

.bento{
  display:grid;
  gap:clamp(14px,1.8vw,22px);
  grid-template-columns:repeat(4,minmax(0,1fr));
  grid-auto-rows:minmax(148px,auto);
}
.bento-item{grid-column:span 2}
.bento-item--wide{grid-column:span 4}
.bento-item--tall{grid-row:span 2}
.bento-item--focus{grid-column:span 2;grid-row:span 2}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(18px,2.4vw,26px);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:linear-gradient(160deg,rgba(13,39,69,.95),rgba(8,28,52,.9));
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{
  transform:translateY(-3px);
  border-color:var(--cyan);
  box-shadow:0 28px 54px -36px rgba(33,230,210,.85);
}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-title{margin:0;font-family:var(--serif);font-size:1.15rem;font-weight:600;line-height:1.35;color:var(--serif-ink)}
.card-meta{font-family:var(--mono);font-size:.8125rem;color:var(--muted);letter-spacing:.02em}
.card-text{margin:0;font-size:.9375rem;color:var(--muted)}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:.875rem;color:var(--cyan)}
.card--accent{
  border-color:rgba(255,106,43,.55);
  background:linear-gradient(160deg,rgba(255,106,43,.16),rgba(8,28,52,.94) 62%);
}

/* ---------- 列表与字段 ---------- */
.list{display:flex;flex-direction:column}
.list-item{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.4rem 1rem;
  padding:.85rem 0;
  border-bottom:1px solid var(--line-soft);
}
.list-item:last-child{border-bottom:0}
.facts{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.fact-term{font-size:.8125rem;font-weight:500;letter-spacing:.06em;color:var(--muted)}
.fact-value{margin:6px 0 0;font-family:var(--mono);font-weight:700;font-variant-numeric:tabular-nums;font-size:1.05rem;color:var(--ink)}

/* ---------- 数据 ---------- */
.stat{display:flex;flex-direction:column;gap:4px}
.stat-value{
  font-family:var(--mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.25rem,2.4vw,2rem);
  line-height:1.1;
  color:var(--ink);
}
.stat-label{font-size:.8125rem;font-weight:500;letter-spacing:.06em;color:var(--muted)}
.stat-trend{font-family:var(--mono);font-size:.8125rem;font-weight:700;color:var(--cyan)}

/* ---------- 标签与筛选 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.28rem .7rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(6,26,50,.62);
  font-size:.75rem;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--muted);
}
.tag--live{border-color:transparent;background:var(--orange);color:#08131F;font-weight:600}
.tag--warn{border-color:transparent;background:var(--amber);color:#1A1405;font-weight:600}
.tag--data{border-color:rgba(33,230,210,.45);color:var(--cyan)}

.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:.45rem .95rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(6,26,50,.55);
  font-size:.8125rem;
  color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.chip:hover{color:var(--ink);border-color:var(--cyan)}
.chip[aria-pressed="true"]{border-color:transparent;background:var(--cyan);color:#06131F;font-weight:600}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;
  margin:0;
  overflow:hidden;
  border-radius:var(--radius-m);
  background:linear-gradient(150deg,#0D2745,#08203B 58%,#061A32);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(120% 90% at 82% 6%, rgba(33,230,210,.14), transparent 62%),
    radial-gradient(95% 80% at 0% 100%, rgba(255,106,43,.16), transparent 60%);
}
.media-frame{width:100%;height:100%;object-fit:cover}
.media-ratio-16x9{aspect-ratio:16/9}
.media-ratio-4x3{aspect-ratio:4/3}
.media-ratio-1x1{aspect-ratio:1/1}
.media-caption{
  position:relative;
  z-index:2;
  padding:.8rem 1.1rem;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  color:var(--muted);
}

/* ---------- 长文排版 ---------- */
.prose{max-width:62ch;color:var(--muted)}
.prose h2{
  margin:2em 0 .6em;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(1.15rem,1.6vw,1.5rem);
  line-height:1.35;
  color:var(--serif-ink);
}
.prose h3{margin:1.6em 0 .5em;font-size:1.05rem;color:var(--ink);font-family:var(--sans);font-weight:600}
.prose p{margin:0 0 1.1em}
.prose strong{color:var(--ink);font-weight:600}
.prose ul{margin:0 0 1.1em;padding-left:1.15em;list-style:disc}
.prose li{margin:.3em 0}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(33,230,210,.42)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,39,69,.6),rgba(4,14,26,.96) 62%);
}
.footer-inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(36px,6vw,72px) clamp(18px,4vw,48px) 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(230px,1.3fr) repeat(4,minmax(110px,.8fr));
  gap:clamp(22px,3vw,40px);
}
.footer-brand{display:flex;flex-direction:column;gap:12px;max-width:34ch}
.footer-brand-row{display:inline-flex;align-items:center;gap:12px}
.footer-brand-row .brand-mark{width:34px;height:34px;border-radius:12px;font-size:1rem}
.footer-brand-name{font-family:var(--serif);font-size:1.05rem;letter-spacing:.06em;color:var(--serif-ink)}
.footer-tagline{margin:0;font-size:.9375rem;color:var(--cyan)}
.footer-note{margin:0;font-size:.8125rem;color:var(--muted)}

.footer-col{min-width:0}
.footer-col-title{
  margin:0 0 14px;
  font-family:var(--sans);
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--ink);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{
  display:inline-block;
  font-size:.9375rem;
  color:var(--muted);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);transform:translateX(4px)}

.footer-contact{
  display:grid;
  gap:16px;
  margin-top:clamp(28px,4vw,52px);
  padding-top:clamp(20px,3vw,32px);
  border-top:1px solid var(--line-soft);
}
.contact-list{display:flex;flex-wrap:wrap;gap:12px 20px}
.contact-item{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:9px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(8,28,52,.72);
}
.contact-label{font-size:.75rem;letter-spacing:.1em;color:var(--muted)}
.contact-value{font-size:.875rem;color:var(--ink)}
.copy-btn{
  padding:.25rem .7rem;
  border:1px solid rgba(33,230,210,.45);
  border-radius:999px;
  background:rgba(33,230,210,.08);
  font-size:.75rem;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--cyan);
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.copy-btn:hover{background:var(--cyan);color:#06131F}
.copy-btn[data-copied="true"]{border-color:transparent;background:var(--orange);color:#08131F;font-weight:600}
.contact-note{margin:0;font-size:.8125rem;color:var(--muted)}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(24px,3vw,36px);
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  font-size:.8125rem;
  color:var(--muted);
}
.footer-legal{margin:0}
.footer-icp{margin:0;font-family:var(--mono);letter-spacing:.02em;color:var(--muted)}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:minmax(200px,1.2fr) repeat(2,minmax(120px,1fr))}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:1040px){
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento-item--wide{grid-column:span 2}
}
@media (max-width:900px){
  body{padding-left:0}
  .skip-link{left:14px}
  .topbar{display:flex}
  .site-main{padding-top:var(--topbar-h)}
  .breadcrumb{padding-top:calc(var(--topbar-h) + 16px)}

  .rail{
    width:min(84vw,320px);
    padding:calc(var(--topbar-h) + 24px) 18px 26px;
    align-items:stretch;
    gap:18px;
    border-right:1px solid var(--line);
    border-radius:0 26px 26px 0;
    transform:translateX(-104%);
    transition:transform .3s var(--ease);
    box-shadow:none;
    z-index:115;
  }
  .site-header[data-open] .rail{transform:translateX(0);box-shadow:40px 0 90px -40px rgba(0,0,0,.98)}
  .rail:hover,.rail:focus-within{width:min(84vw,320px);box-shadow:none}
  .site-header[data-open] .rail{box-shadow:40px 0 90px -40px rgba(0,0,0,.98)}

  .rail-brand{flex-direction:row;align-items:center;gap:12px}
  .rail-brand-name{writing-mode:horizontal-tb;font-size:1rem;letter-spacing:.08em}

  .rail-nav{align-items:flex-start}
  .rail-list{align-items:stretch;gap:4px}
  .rail-link,
  .rail:hover .rail-link,
  .rail:focus-within .rail-link{
    flex-direction:row;
    justify-content:flex-start;
    gap:14px;
    padding:13px 14px;
    border-radius:15px;
  }
  .rail-link::before,.rail:hover .rail-link::before{left:0}
  .rail-link-text,
  .rail:hover .rail-link-text,
  .rail:focus-within .rail-link-text{writing-mode:horizontal-tb;font-size:.95rem;letter-spacing:.05em}

  .rail-foot{align-items:stretch;justify-content:stretch}
  .rail-cta,
  .rail:hover .rail-cta,
  .rail:focus-within .rail-cta{
    width:100%;
    writing-mode:horizontal-tb;
    padding:12px 18px;
    font-size:.9rem;
    letter-spacing:.08em;
    text-align:center;
  }

  .nav-scrim{
    display:block;
    position:fixed;
    inset:0;
    z-index:100;
    background:rgba(3,10,20,.72);
    backdrop-filter:blur(3px);
    opacity:0;
    visibility:hidden;
    transition:opacity .25s var(--ease),visibility .25s var(--ease);
  }
  .site-header[data-open] .nav-scrim{opacity:1;visibility:visible}
  body.nav-open{overflow:hidden}
}
@media (max-width:820px){
  .grid--2,.grid--3{grid-template-columns:1fr}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  .bento{grid-template-columns:1fr}
  .bento-item,
  .bento-item--wide,
  .bento-item--tall,
  .bento-item--focus{grid-column:span 1;grid-row:auto}
  .footer-top{grid-template-columns:1fr}
  .contact-item{width:100%;justify-content:space-between}
}

/* ---------- 无障碍：减少动效 ---------- */
@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]{opacity:1;transform:none}
  .rail-link:hover,.card:hover,.btn:hover,.footer-link:hover{transform:none}
}