/* ============================================================
   亿博体育台 · 共享样式 /assets/site.css
   深夜球场指挥塔：蓝图网格 + 冷调面板 + 荧光青绿 + 暖橙价格
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#080D12;
  --panel:#121A23;
  --moss:#0E2A22;
  --neon:#2BF5B0;
  --deep:#17A57A;
  --orange:#FF8A3D;
  --amber:#FFC48A;
  --paper:#EAF2F0;
  --muted:#A9B6C2;
  --line:#24303B;

  --wrap-max:1240px;
  --gutter:clamp(16px,4vw,40px);
  --dur:.18s;
  --ease:linear;

  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,system-ui,sans-serif;
  --display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC","Microsoft YaHei",system-ui,sans-serif;

  scroll-behavior:smooth;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.75;
  color:var(--muted);
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(36,48,59,.32) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(36,48,59,.32) 1px,transparent 1px),
    radial-gradient(120% 60% at 50% -10%,rgba(14,42,34,.85),rgba(8,13,18,0) 70%);
  background-size:96px 96px,96px 96px,100% 100%;
  background-position:center top,center top,center top;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
h1,h2,h3,h4{font-weight:800;color:var(--paper);line-height:1.15}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
::selection{background:rgba(43,245,176,.28);color:var(--paper)}

/* ---------- 3. 排版 ---------- */
h1,.h1{font-family:var(--display);font-stretch:condensed;font-size:clamp(30px,4.6vw,56px);letter-spacing:.01em}
h2,.h2{font-family:var(--display);font-stretch:condensed;font-size:clamp(24px,3.4vw,38px)}
h3,.h3{font-family:var(--display);font-stretch:condensed;font-size:clamp(19px,2.2vw,24px)}
.num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
strong{color:var(--paper);font-weight:600}

.index-label{
  display:inline-block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--deep);
}
.lead{font-size:17px;color:var(--muted);max-width:40ch}
.prose{max-width:40em;font-size:16.5px;line-height:1.75;color:var(--muted)}
.prose>*+*{margin-top:1em}
.prose h2,.prose h3{font-family:var(--display);font-stretch:condensed;margin-top:1.8em}
.prose ul{display:grid;gap:.5em;margin-top:1em}
.prose ul li{position:relative;padding-left:18px}
.prose ul li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:1px;background:var(--deep)}
.prose a{color:var(--neon);border-bottom:1px solid rgba(43,245,176,.4)}

/* ---------- 4. 容器与栅格 ---------- */
.wrap{width:100%;max-width:var(--wrap-max);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(32px,5vw,64px)}
.section--moss{
  background:linear-gradient(180deg,rgba(14,42,34,.6),rgba(14,42,34,.08));
  border-block:1px solid var(--line);
}
.grid{display:grid;gap:clamp(16px,2.4vw,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--auto{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.split{display:grid;grid-template-columns:minmax(0,318px) minmax(0,1fr);gap:clamp(18px,2.6vw,34px);align-items:start}

/* ---------- 5. 通用组件 ---------- */
/* 切角与面板 */
.cut{--cut:14px;clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut))}
.cut--sm{--cut:8px}
.cut--lg{--cut:22px}
.panel{position:relative;background:var(--panel);border:1px solid var(--line);padding:clamp(18px,2.4vw,28px)}
.panel--cut{
  position:relative;background:var(--panel);padding:clamp(18px,2.4vw,28px);--cut:16px;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.panel--moss{background:linear-gradient(150deg,var(--moss),var(--panel))}
.panel--edge::before{content:"";position:absolute;left:0;top:0;width:52px;height:2px;background:var(--neon)}

/* 按钮 */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;font-size:14.5px;font-weight:600;letter-spacing:.06em;
  color:var(--paper);background:var(--panel);border:1px solid var(--line);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn:hover{border-color:var(--deep);color:var(--neon)}
.btn--cta{background:var(--orange);border-color:var(--orange);color:#170E07}
.btn--cta:hover{background:var(--amber);border-color:var(--amber);color:#170E07}
.btn--ghost{background:transparent}
.btn--neon{border-color:var(--neon);color:var(--neon);background:rgba(43,245,176,.06)}
.btn--neon:hover{background:rgba(43,245,176,.14)}
.btn--block{width:100%}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);background:rgba(36,48,59,.6);border:1px solid var(--line);
}
.tag--neon{color:var(--neon);border-color:rgba(43,245,176,.4);background:rgba(43,245,176,.08)}
.tag--price{color:var(--amber);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.1)}

/* 价格悬浮标签 */
.price-tag{
  display:inline-flex;flex-direction:column;gap:3px;padding:9px 14px;--cut:10px;
  background:var(--orange);color:#170E07;
}
.price-tag__num{font-family:var(--mono);font-size:20px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.price-tag__unit{font-size:11px;letter-spacing:.1em;opacity:.78}

/* 数据点 */
.stat{display:grid;gap:6px}
.stat__num{font-family:var(--mono);font-size:clamp(26px,3.2vw,40px);line-height:1;color:var(--paper);font-variant-numeric:tabular-nums}
.stat__label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted)}
.stat--neon .stat__num{color:var(--neon)}
.stat--amber .stat__num{color:var(--amber)}

/* 编号章节 */
.chapter{display:grid;gap:10px;padding:clamp(26px,4vw,46px) 0 18px;position:relative}
.chapter__num{
  font-family:var(--mono);font-size:clamp(40px,7vw,76px);line-height:.85;
  color:rgba(43,245,176,.16);-webkit-text-stroke:1px rgba(43,245,176,.45);
}
.chapter__title{font-family:var(--display);font-stretch:condensed;font-size:clamp(24px,3.6vw,40px);color:var(--paper)}
.chapter__desc{color:var(--muted);max-width:38em}

/* 分隔线 */
.rule{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--neon),var(--line) 32%,transparent)}
.slash{height:1px;border:0;margin:0;background:repeating-linear-gradient(115deg,var(--line) 0 1px,transparent 1px 9px)}

/* 轨迹弧线 */
.track-arc{
  position:absolute;width:clamp(180px,26vw,340px);aspect-ratio:1/1;
  border:1px solid rgba(43,245,176,.22);border-radius:50%;pointer-events:none;
}
.track-arc::after{content:"";position:absolute;inset:14%;border:1px dashed rgba(43,245,176,.14);border-radius:50%}

/* 时间轴 / 赛程刻度 */
.timeline{border-top:1px solid var(--line)}
.timeline__item{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:clamp(12px,2vw,26px);
  align-items:center;padding:18px 0;border-bottom:1px solid var(--line);
}
.timeline__tick{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--deep)}
.timeline__title{font-size:16px;font-weight:600;color:var(--paper)}
.timeline__note{font-size:13.5px;color:var(--muted)}
.timeline__price{font-family:var(--mono);font-size:17px;color:var(--amber);font-variant-numeric:tabular-nums;white-space:nowrap}

/* 标签页 / 筛选 */
.tabs{display:inline-flex;border:1px solid var(--line);background:rgba(18,26,35,.7)}
.tab{
  padding:9px 20px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  color:var(--muted);border-left:1px solid var(--line);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.tab:first-child{border-left:0}
.tab:hover{color:var(--paper)}
.tab[aria-selected="true"]{color:#06110D;background:var(--neon)}
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.filter-btn{
  padding:7px 14px;font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;
  color:var(--muted);background:rgba(18,26,35,.6);border:1px solid var(--line);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.filter-btn:hover{color:var(--paper);border-color:var(--deep)}
.filter-btn[aria-pressed="true"]{color:var(--neon);border-color:var(--neon);background:rgba(43,245,176,.1)}

/* 手风琴 */
.accordion{border-top:1px solid var(--line)}
.accordion__item{border-bottom:1px solid var(--line)}
.accordion__btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--paper);
}
.accordion__btn::after{content:"+";font-family:var(--mono);color:var(--neon)}
.accordion__btn[aria-expanded="true"]::after{content:"–"}
.accordion__panel{display:none;padding:0 4px 18px;color:var(--muted)}
.accordion__panel[data-open]{display:block}

/* 数据表 */
.data-table{width:100%;font-size:14px}
.data-table th{
  font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
  color:var(--deep);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);
}
.data-table td{padding:12px;border-bottom:1px solid var(--line);color:var(--muted)}
.data-table td.num{font-family:var(--mono);font-size:15px;color:var(--paper);font-variant-numeric:tabular-nums}
.data-table tr:hover td{background:rgba(43,245,176,.04)}

/* 搜索框 */
.search-field{
  display:flex;align-items:center;gap:10px;padding:10px 14px;
  border:1px solid var(--line);background:rgba(18,26,35,.7);
}
.search-field input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--paper);font-size:15px}
.search-field input::placeholder{color:rgba(169,182,194,.6)}

/* 复制按钮 */
.copy-btn{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--deep);
  border:1px solid var(--line);padding:3px 9px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.copy-btn:hover{color:var(--neon);border-color:var(--neon)}
.copy-btn[data-copied]{color:#06110D;background:var(--neon);border-color:var(--neon)}

/* 面包屑 */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:18px 0;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--muted)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line)}
.crumbs a:hover{color:var(--neon)}

/* 图片占位容器 */
.media{position:relative;display:block;overflow:hidden;background:linear-gradient(160deg,#101922,#0A1A15)}
.media img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media__overlay{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,13,18,0) 42%,rgba(8,13,18,.86))}
.media__grid{position:absolute;inset:0;pointer-events:none;opacity:.3;
  background-image:linear-gradient(to right,rgba(43,245,176,.35) 1px,transparent 1px);
  background-size:48px 48px}
.media__tag{
  position:absolute;left:14px;bottom:14px;padding:5px 10px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--neon);
  background:rgba(8,13,18,.78);border:1px solid rgba(43,245,176,.4);
}

/* 显现 */
[data-reveal]{opacity:0;transform:translateY(14px);
  transition:opacity .32s var(--ease),transform .32s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 6. 页头 ---------- */
.skip-link{
  position:absolute;left:50%;top:-70px;transform:translateX(-50%);z-index:120;
  padding:10px 20px;background:var(--neon);color:#04211A;
  font-family:var(--mono);font-size:13px;letter-spacing:.08em;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:8px}

.site-header{position:relative;z-index:20}
.scroll-line{position:fixed;left:0;right:0;top:0;height:3px;z-index:90;pointer-events:none;
  background:rgba(36,48,59,.55)}
.scroll-line__bar{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--deep),var(--neon));
  transition:width .12s linear}

.header-coord{
  border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(14,42,34,.92),rgba(8,13,18,.65) 65%);
}
.header-coord__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 20px;min-height:40px}
.coord-line{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.coord-key{color:var(--deep)}
.coord-val{color:var(--paper)}
.coord-sep{display:inline-block;width:1px;height:12px;background:var(--line)}
.header-dl{
  display:inline-flex;align-items:center;padding:7px 14px;
  background:var(--orange);color:#170E07;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.header-dl:hover{background:var(--amber);color:#170E07}

.masthead{position:relative;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(18,26,35,.55),rgba(8,13,18,0))}
.masthead::before{content:"";position:absolute;left:50%;top:0;width:clamp(64px,10vw,128px);height:2px;
  transform:translateX(-50%);background:var(--neon)}
.masthead__inner{text-align:center;padding-block:clamp(18px,3vw,34px)}
.masthead__eyebrow{font-family:var(--mono);font-size:10.5px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--deep);margin-bottom:12px}
.masthead__brand{
  display:inline-block;font-family:var(--display);font-stretch:condensed;font-weight:800;
  font-size:clamp(30px,5.6vw,54px);line-height:1;letter-spacing:.06em;color:var(--paper);
  transition:color var(--dur) var(--ease);
}
.masthead__brand:hover{color:var(--neon)}
.masthead__note{margin-top:12px;font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;color:var(--muted)}

.site-nav{border-bottom:1px solid var(--line);background:rgba(18,26,35,.6)}
.site-nav__inner{position:relative;display:flex;align-items:center;justify-content:center;gap:12px;min-height:50px}
.site-nav__list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center}
.site-nav__list a{
  position:relative;display:block;padding:9px 18px;
  font-size:14.5px;letter-spacing:.06em;color:var(--muted);border-left:1px solid var(--line);
  transition:color var(--dur) var(--ease);
}
.site-nav__list li:first-child a{border-left:0}
.site-nav__list a:hover{color:var(--paper)}
.site-nav__list a[aria-current="page"]{color:var(--neon)}
.site-nav__list a[aria-current="page"]::after{content:"";position:absolute;left:18px;right:18px;bottom:3px;height:2px;background:var(--neon)}
.nav-now{position:absolute;right:0;top:50%;transform:translateY(-50%);display:none;align-items:baseline;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.nav-now__key{color:var(--deep)}
.nav-now__val{color:var(--neon)}
.nav-toggle{display:none;align-items:center;gap:10px;padding:10px 4px;
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--paper)}
.nav-toggle__bars{display:block;width:22px;height:8px;border-top:1px solid var(--neon);border-bottom:1px solid var(--neon)}
@media (min-width:1260px){.nav-now{display:flex}}

.quickbar{border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(18,26,35,.92),rgba(14,42,34,.6))}
.quickbar__wrap{display:flex;align-items:center;gap:14px;min-height:56px}
.quickbar__label{flex:0 0 auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--deep)}
.quickbar__list{display:flex;flex:1;min-width:0;overflow-x:auto;scroll-snap-type:x proximity;border-left:1px solid var(--line)}
.quickbar__list::-webkit-scrollbar{height:4px}
.quickbar__list::-webkit-scrollbar-thumb{background:var(--line)}
.quickbar__item{
  display:grid;gap:2px;padding:9px 16px;text-align:left;white-space:nowrap;
  border-right:1px solid var(--line);scroll-snap-align:start;
  transition:background var(--dur) var(--ease);
}
.quickbar__item:hover{background:rgba(43,245,176,.06)}
.quickbar__item[aria-pressed="true"]{background:rgba(43,245,176,.1);box-shadow:inset 0 -2px 0 var(--neon)}
.quickbar__item[aria-pressed="true"] .quickbar__name{color:var(--neon)}
.quickbar__name{font-size:14px;font-weight:600;color:var(--paper)}
.quickbar__meta{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--muted)}
.quickbar--stack{background:none;border-bottom:0}
.quickbar--stack .quickbar__wrap{display:block;min-height:0}
.quickbar--stack .quickbar__label{display:block;margin-bottom:10px}
.quickbar--stack .quickbar__list{flex-direction:column;overflow:visible;border:1px solid var(--line)}
.quickbar--stack .quickbar__item{border-right:0;border-bottom:1px solid var(--line)}
.quickbar--stack .quickbar__item:last-child{border-bottom:0}

/* ---------- 7. 页脚 ---------- */
.site-footer{position:relative;margin-top:clamp(56px,9vw,120px);border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(18,26,35,.78),rgba(8,13,18,1) 62%)}
.site-footer::before{content:"";position:absolute;left:0;top:-2px;width:clamp(80px,14vw,180px);height:2px;background:var(--neon)}
.footer-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2.1fr);gap:clamp(28px,4vw,64px);
  padding-block:clamp(36px,6vw,72px)}
.footer-brand__name{font-family:var(--display);font-stretch:condensed;font-weight:800;
  font-size:clamp(22px,2.6vw,30px);line-height:1.1;letter-spacing:.04em;color:var(--paper)}
.footer-brand__note{margin-top:10px;font-size:13.5px;color:var(--muted);max-width:24em}
.footer-brand__index{margin-top:16px;padding-left:10px;border-left:2px solid var(--deep);
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--deep)}
.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,40px)}
.footer-col__title{display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--neon)}
.footer-col__title::after{content:"";flex:1;height:1px;background:var(--line)}
.footer-col__list{margin-top:14px;display:grid;gap:9px}
.footer-col__list a{display:inline-block;font-size:14.5px;color:var(--muted);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.footer-col__list a:hover{color:var(--paper);transform:translateX(3px)}
.footer-contact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line)}
.footer-contact__item{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;
  margin:0;padding:16px 18px;background:var(--panel)}
.footer-contact__key{width:100%;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--deep)}
.footer-contact__val{font-family:var(--mono);font-size:14px;color:var(--paper);word-break:break-all}
.footer-legal{margin-top:clamp(24px,3vw,40px);border-top:1px solid var(--line);background:rgba(8,13,18,.88)}
.footer-legal__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;
  padding-block:18px;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--muted)}
.legal-line{color:var(--paper)}
.legal-year{color:var(--deep)}

/* ---------- 8. 响应式 ---------- */
@media (max-width:1024px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:minmax(0,1fr)}
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .site-nav__inner{justify-content:flex-start;min-height:52px}
  .nav-toggle{display:inline-flex}
  .site-nav__list{
    display:none;position:absolute;left:0;right:0;top:100%;z-index:70;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(18,26,35,.98);border:1px solid var(--line);padding:6px;
  }
  .site-nav[data-open] .site-nav__list{display:flex}
  .site-nav__list a{border-left:0;border-top:1px solid var(--line);padding:14px 16px}
  .site-nav__list li:first-child a{border-top:0}
  .site-nav__list a[aria-current="page"]::after{left:16px;right:auto;width:26px;bottom:8px}
  .quickbar__label{display:none}
  .masthead__note{letter-spacing:.12em}
}
@media (max-width:768px){
  body{font-size:16px;background-size:64px 64px,64px 64px,100% 100%}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-contact{grid-template-columns:minmax(0,1fr)}
  .timeline__item{grid-template-columns:minmax(0,1fr);gap:6px}
  .header-coord__inner{min-height:auto;padding-block:8px}
  .coord-sep{display:none}
}

/* ---------- 9. 无障碍与降级 ---------- */
@media (prefers-reduced-motion: reduce){
  :root{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
}