/* ============================================================
   易倍体育 · 共享外壳样式 /assets/site.css
   夜场草坪绿单色体系 + 哨声荧光黄信号
   ============================================================ */

/* ---------- 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{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}
[hidden]{display:none!important}

/* ---------- tokens ---------- */
:root{
  --pitch:#0B3D2E;
  --pitch-2:#13543F;
  --yellow:#E8FF3A;
  --yellow-soft:#F5FFA3;
  --red:#E63946;
  --blue:#3A86FF;
  --chalk:#F4F7F2;
  --ink:#0E1512;
  --fog:#9AA5A0;
  --stripe:#1B2A24;

  --line:rgba(244,247,242,.14);
  --line-strong:rgba(244,247,242,.30);
  --line-soft:rgba(232,255,58,.42);
  --shadow:0 1px 0 rgba(0,0,0,.35),0 16px 34px -26px rgba(0,0,0,.95);

  --rail:240px;
  --shell:1360px;
  --pad:clamp(18px,3.4vw,40px);
  --gap:clamp(14px,2.2vw,30px);
  --radius:2px;

  --font-head:"Barlow Condensed","Oswald","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI","Helvetica Neue",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  background-color:var(--pitch);
  background-image:
    repeating-linear-gradient(115deg,rgba(244,247,242,.035) 0 1px,transparent 1px 96px),
    radial-gradient(120% 90% at 10% -12%,rgba(19,84,63,.95) 0%,rgba(11,61,46,0) 62%);
  background-attachment:fixed;
  color:var(--chalk);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
main{display:block}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.08;letter-spacing:.015em}
h1{font-size:clamp(2.4rem,5vw,4.2rem)}
h2{font-size:clamp(1.8rem,3.5vw,2.6rem)}
h3{font-size:clamp(1.2rem,2vw,1.5rem)}
::selection{background:var(--yellow);color:var(--ink)}
:focus-visible{outline:2px solid var(--yellow);outline-offset:3px;border-radius:2px}

/* ---------- utilities ---------- */
.mono{font-family:var(--font-mono)}
.muted{color:var(--fog)}
.accent{color:var(--yellow)}
.rule{height:1px;background:var(--line);border:0;margin:0}
.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}

.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}

.skip-link{
  position:absolute;left:12px;top:-72px;z-index:120;
  background:var(--yellow);color:var(--ink);
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;
  padding:10px 16px;border-radius:var(--radius);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ============================================================
   HEADER — 转播信号带
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,61,46,.96);
  border-bottom:1px solid var(--line);
}
.site-header__inner{
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr) auto;
  align-items:stretch;
  min-height:78px;
  column-gap:clamp(12px,2vw,28px);
  padding-right:clamp(14px,2.4vw,32px);
}

/* 品牌轨道 */
.brand-rail{
  position:relative;
  display:flex;align-items:center;
  padding:0 clamp(14px,1.8vw,24px);
  background:var(--pitch-2);
}
.brand-rail::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:4px;
  background:repeating-linear-gradient(180deg,var(--yellow) 0 9px,transparent 9px 18px);
  opacity:.85;
}
.brand{display:flex;flex-direction:column;gap:2px;line-height:1.1}
.brand__mark{
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(1.15rem,1.6vw,1.45rem);letter-spacing:.06em;color:var(--chalk);
}
.brand__sub{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.34em;
  color:var(--yellow);text-transform:uppercase;
}

/* 状态胶囊 */
.status-chip{
  align-self:center;justify-self:start;
  display:inline-flex;align-items:center;gap:10px;
  max-width:100%;padding:7px 15px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;
  color:var(--fog);
  background:rgba(19,84,63,.55);
  border:1px solid var(--line);border-radius:999px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.status-dot{
  flex:none;width:7px;height:7px;border-radius:50%;
  background:var(--yellow);
  animation:pulse 2.6s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(232,255,58,.55)}
  70%{box-shadow:0 0 0 9px rgba(232,255,58,0)}
  100%{box-shadow:0 0 0 0 rgba(232,255,58,0)}
}

/* 导航 */
.site-nav{
  display:flex;align-items:center;justify-content:flex-end;
  gap:clamp(8px,1.6vw,22px);align-self:center;
}
.nav-list{display:flex;align-items:center;gap:clamp(2px,.8vw,12px)}
.nav-item{display:flex;align-items:center}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:7px;
  padding:10px 10px;font-size:.93rem;color:var(--chalk);
  border-bottom:2px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.nav-link__num{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.08em;color:var(--fog);transition:color .16s ease}
.nav-link:hover{color:var(--yellow-soft)}
.nav-link:hover .nav-link__num{color:var(--yellow)}
.nav-link[aria-current="page"]{color:var(--yellow)}
.nav-link[aria-current="page"] .nav-link__num{color:var(--yellow)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:3px;background:var(--yellow);
}
.nav-quick{
  display:flex;align-items:center;gap:8px;
  padding-left:clamp(8px,1.4vw,20px);
  border-left:1px solid var(--line);
}
.quick-link{
  font-family:var(--font-mono);font-size:.71rem;letter-spacing:.1em;white-space:nowrap;
  padding:9px 14px;border:1px solid var(--line-soft);border-radius:999px;
  color:var(--yellow);background:rgba(232,255,58,.08);
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.quick-link:hover{background:var(--yellow);color:var(--ink);transform:translateY(-1px)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;align-self:center;
  padding:10px 14px;
  border:1px solid var(--line-strong);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;color:var(--chalk);
  cursor:pointer;transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover{border-color:var(--yellow);color:var(--yellow)}
.nav-toggle__bars{position:relative;display:block;width:18px;height:2px;background:var(--yellow);transition:background .18s ease}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--yellow);
  transition:transform .18s ease;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}

/* 阅读进度条 */
.progress-bar{
  position:absolute;left:0;right:0;bottom:-1px;height:3px;
  background:rgba(244,247,242,.08);overflow:hidden;
}
.progress-bar__fill{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--yellow),var(--yellow-soft));
  transition:transform .12s linear;
}

/* ============================================================
   FOOTER — 赛后数据栏
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,120px);
  background:var(--ink);
  border-top:1px solid var(--line-soft);
  color:var(--chalk);
}
.site-footer::before{
  content:"";display:block;height:9px;
  background-image:repeating-linear-gradient(115deg,var(--yellow) 0 14px,transparent 14px 36px);
  opacity:.34;
}
.footer-top,.footer-grid,.footer-legal{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding-inline:var(--pad);
}
.footer-top{
  display:flex;flex-wrap:wrap;gap:var(--gap);
  align-items:flex-end;justify-content:space-between;
  padding-block:clamp(28px,4vw,56px) clamp(22px,3vw,38px);
}
.footer-intro{display:flex;flex-direction:column;gap:14px;min-width:min(420px,100%)}
.footer-brand{display:flex;flex-direction:column;gap:2px}
.footer-brand__mark{
  font-family:var(--font-head);font-weight:900;
  font-size:1.1rem;letter-spacing:.06em;color:var(--chalk);
}
.footer-brand__sub{
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.32em;
  color:var(--yellow);text-transform:uppercase;
}
.footer-tagline{
  position:relative;max-width:24ch;
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(1.6rem,3.6vw,2.8rem);line-height:1.08;color:var(--chalk);
}
.footer-tagline::after{
  content:"";display:block;width:64px;height:4px;margin-top:16px;
  background:var(--yellow);transform:skewX(-18deg);
}
.to-top{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;
  padding:11px 18px;border:1px solid var(--line-strong);border-radius:999px;
  color:var(--chalk);cursor:pointer;
  transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.to-top:hover{border-color:var(--yellow);color:var(--yellow);transform:translateY(-2px)}

.footer-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
  padding-block:clamp(26px,3.6vw,52px);
  border-top:1px solid var(--line);
}
.footer-col{min-width:0}
.footer-col__title{
  max-width:190px;margin-bottom:16px;padding-bottom:10px;
  font-family:var(--font-mono);font-weight:700;font-size:.7rem;letter-spacing:.24em;
  color:var(--yellow);text-transform:uppercase;
  border-bottom:1px solid var(--line);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.95rem;color:rgba(244,247,242,.86);
  transition:color .16s ease,transform .16s ease;
}
.footer-link::before{content:"";width:10px;height:1px;background:var(--yellow);opacity:.65;transition:width .16s ease}
.footer-link:hover{color:var(--yellow);transform:translateX(3px)}
.footer-link:hover::before{width:16px}

.footer-contact{display:flex;flex-direction:column}
.contact-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:9px 0;border-bottom:1px dashed rgba(244,247,242,.14);
}
.contact-key{
  min-width:46px;
  font-family:var(--font-mono);font-size:.67rem;letter-spacing:.2em;color:var(--fog);
}
.contact-val{
  font-family:var(--font-mono);font-size:.84rem;color:var(--chalk);word-break:break-all;
}
.copy-btn{
  font-family:var(--font-mono);font-size:.65rem;letter-spacing:.16em;
  padding:5px 11px;border:1px solid var(--line-strong);border-radius:999px;
  color:var(--fog);cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.copy-btn:hover{border-color:var(--yellow);color:var(--yellow)}
.copy-btn.is-copied{background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.contact-note{
  margin-top:14px;font-size:.85rem;line-height:1.7;color:var(--fog);
}
.footer-legal{
  display:flex;flex-wrap:wrap;gap:14px 24px;
  align-items:center;justify-content:space-between;
  padding-block:22px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;color:var(--fog);
}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 18px}
.legal-link{color:var(--fog);transition:color .16s ease}
.legal-link:hover{color:var(--yellow)}
.footer-icp{color:var(--fog)}

/* ============================================================
   通用组件
   ============================================================ */
/* 侧边导览骨架 */
.layout-rail{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);align-items:start}
.rail-col{
  align-self:stretch;
  padding:clamp(20px,3vw,40px) clamp(14px,2vw,26px);
  border-right:1px solid var(--line);
  background:linear-gradient(180deg,rgba(19,84,63,.55),rgba(11,61,46,0));
}
.rail-sticky{position:sticky;top:110px}

/* 章节 */
.section{padding-block:clamp(38px,6vw,88px)}
.section-head{margin-bottom:clamp(20px,3vw,36px)}
.eyebrow{
  display:block;margin-bottom:12px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.3em;
  color:var(--yellow);text-transform:uppercase;
}
.section-num{
  display:block;margin-bottom:6px;
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(3rem,8vw,7rem);line-height:.8;letter-spacing:.02em;
  color:rgba(232,255,58,.14);
  -webkit-text-stroke:1px rgba(232,255,58,.55);
}
.section-title{
  font-family:var(--font-head);font-weight:800;
  font-size:clamp(1.8rem,3.5vw,2.6rem);line-height:1.08;
}
.section-lede{
  max-width:62ch;margin-top:14px;
  font-size:1.02rem;color:rgba(244,247,242,.78);
}
.u-underline{position:relative;display:inline-block}
.u-underline::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;
  background:var(--yellow);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .22s ease;
}
.u-underline:hover::after,.u-underline:focus-visible::after{transform:scaleX(1)}

/* 正文 */
.prose{max-width:70ch;font-size:1.02rem;line-height:1.85;color:rgba(244,247,242,.86)}
.prose h2,.prose h3{color:var(--chalk);margin:1.9em 0 .6em;line-height:1.16}
.prose h2{font-size:clamp(1.5rem,2.6vw,2rem)}
.prose h3{font-size:1.2rem}
.prose p+p{margin-top:1em}
.prose ul,.prose ol{display:flex;flex-direction:column;gap:.5em;margin:1em 0}
.prose li{position:relative;padding-left:1.4em}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--yellow)}
.prose strong{color:var(--chalk)}
.prose a{color:#9CC0FF;border-bottom:1px solid rgba(58,134,255,.55)}
.prose a:hover{color:var(--yellow);border-color:var(--yellow)}
.prose--light{
  background:var(--chalk);color:var(--ink);
  padding:clamp(20px,3vw,40px);border-radius:var(--radius);
}
.prose--light h2,.prose--light h3,.prose--light strong{color:var(--ink)}
.prose--light li::before{background:var(--pitch)}
.prose--light a{color:#1c5bd3;border-color:rgba(28,91,211,.5)}

/* 网格 */
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--aside{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}

/* 卡片 */
.card{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  background:var(--pitch-2);
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease;
}
.card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--yellow);opacity:0;transition:opacity .2s ease;
}
.card:hover{transform:translateY(-4px) skewY(-.4deg);border-color:var(--line-strong)}
.card:hover::before{opacity:1}
.card__title{font-family:var(--font-head);font-weight:700;font-size:1.16rem;letter-spacing:.02em;margin-bottom:8px}
.card__body{font-size:.96rem;color:rgba(244,247,242,.78)}
.card__meta{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;color:var(--fog);
}
.card--paper{background:var(--chalk);color:var(--ink);border-color:rgba(14,21,18,.14)}
.card--paper .card__body{color:rgba(14,21,18,.72)}
.card--paper .card__meta{color:rgba(14,21,18,.5)}

/* 数据 */
.data-chip{
  display:inline-flex;flex-direction:column;gap:4px;
  padding:12px 16px;
  background:rgba(19,84,63,.6);
  border:1px solid var(--line);border-left:3px solid var(--blue);
  border-radius:var(--radius);
}
.data-chip__value{font-family:var(--font-mono);font-weight:700;font-size:1.3rem;color:var(--chalk)}
.data-chip__label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.16em;color:var(--fog)}
.stat{
  display:flex;flex-direction:column;gap:6px;padding:18px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(19,84,63,.9),rgba(11,61,46,.35));
}
.stat__value{font-family:var(--font-mono);font-weight:700;font-size:clamp(1.6rem,3vw,2.2rem);color:var(--yellow)}
.stat__label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;color:var(--fog)}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border:1px solid var(--line-strong);border-radius:999px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;color:var(--chalk);
}
.tag--accent{background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.tag--red{border-color:rgba(230,57,70,.75);color:#FF8A93}
.tag--blue{border-color:rgba(58,134,255,.75);color:#9CC0FF}

/* 时间轴 */
.timeline{position:relative;display:flex;flex-direction:column;padding-left:22px}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--yellow),rgba(244,247,242,.12));
}
.timeline__item{position:relative;padding:14px 0 14px 6px}
.timeline__item::before{
  content:"";position:absolute;left:-22px;top:21px;width:11px;height:11px;
  border:1px solid var(--yellow);background:var(--pitch);transform:rotate(45deg);
  transition:background .2s ease;
}
.timeline__item.is-active::before{background:var(--yellow)}
.timeline__time{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.18em;color:var(--yellow)}
.timeline__body{margin-top:6px;font-size:.96rem;color:rgba(244,247,242,.8)}

/* 手风琴 / 步骤卡 */
.disclosure{border:1px solid var(--line);background:var(--pitch-2)}
.disclosure+.disclosure{margin-top:-1px}
.disclosure__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:16px 18px;text-align:left;cursor:pointer;
  font-family:var(--font-head);font-weight:700;font-size:1.05rem;color:var(--chalk);
  transition:color .16s ease,background .16s ease;
}
.disclosure__trigger:hover{color:var(--yellow);background:rgba(232,255,58,.05)}
.disclosure__icon{position:relative;flex:none;width:14px;height:14px}
.disclosure__icon::before,.disclosure__icon::after{content:"";position:absolute;background:var(--yellow);transition:transform .18s ease}
.disclosure__icon::before{left:0;right:0;top:6px;height:2px}
.disclosure__icon::after{top:0;bottom:0;left:6px;width:2px}
.disclosure__trigger[aria-expanded="true"] .disclosure__icon::after{transform:scaleY(0)}
.disclosure__panel{padding:0 18px 18px;font-size:.96rem;color:rgba(244,247,242,.8)}

/* 表格 */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(19,84,63,.32);
}
.data-table{width:100%;min-width:560px;font-size:.92rem}
.data-table th,.data-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.data-table th{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;
  color:var(--yellow);background:rgba(11,61,46,.65);
}
.data-table td{color:rgba(244,247,242,.82)}
.data-table tr:last-child td{border-bottom:0}

/* 图片容器基础 */
.media{display:block;margin:0}
.media__frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(140deg,var(--pitch-2),var(--stripe));
  transition:transform .24s ease;
}
.media__frame img{width:100%;height:100%;object-fit:cover}
.media__frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(244,247,242,.05) 0 2px,transparent 2px 18px);
}
.media__caption{
  margin-top:10px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;color:var(--fog);
}
.media--wide .media__frame{aspect-ratio:21/9}
.media--tall .media__frame{aspect-ratio:4/5}
.media--square .media__frame{aspect-ratio:1/1}
.media--skew .media__frame{transform:skewY(-1.5deg)}
.media--skew:hover .media__frame{transform:skewY(.5deg)}

/* 章节导航 */
.chapter-rail{display:flex;flex-direction:column;gap:4px}
.chapter-link{
  display:flex;align-items:baseline;gap:10px;
  padding:6px 0 6px 10px;
  border-left:2px solid transparent;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:var(--fog);
  transition:color .16s ease,border-color .16s ease,padding-left .16s ease;
}
.chapter-link:hover{color:var(--chalk);padding-left:14px}
.chapter-link.is-active{color:var(--yellow);border-left-color:var(--yellow)}

/* 面包屑 */
.breadcrumbs{
  display:flex;flex-wrap:wrap;gap:8px;padding:18px 0;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:var(--fog);
}
.breadcrumbs a{color:var(--fog);transition:color .16s ease}
.breadcrumbs a:hover{color:var(--yellow)}
.breadcrumbs__sep{color:rgba(244,247,242,.3)}
.breadcrumbs [aria-current="page"]{color:var(--yellow)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border:1px solid transparent;border-radius:var(--radius);
  font-family:var(--font-head);font-weight:700;font-size:1rem;letter-spacing:.06em;
  cursor:pointer;text-align:center;
  transition:transform .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
}
.btn--accent{background:var(--yellow);color:var(--ink);border-color:var(--yellow)}
.btn--accent:hover{background:var(--yellow-soft);transform:translate(-2px,-2px)}
.btn--ghost{border-color:var(--line-strong);color:var(--chalk)}
.btn--ghost:hover{border-color:var(--yellow);color:var(--yellow);transform:translate(-2px,-2px)}
.btn--block{width:100%}

/* 显现动效 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .status-chip{display:none}
}
@media (max-width:1024px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--aside{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .site-header__inner{
    grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:
      "brand toggle"
      "nav nav";
    min-height:64px;
    column-gap:10px;
    padding-right:14px;
  }
  .brand-rail{grid-area:brand;min-height:64px}
  .nav-toggle{display:inline-flex;grid-area:toggle}
  .site-nav{
    grid-area:nav;
    display:none;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;
    max-height:calc(100vh - 64px);overflow-y:auto;
    padding:8px 14px 20px;
    background:var(--pitch-2);
    border-top:1px solid var(--line);
  }
  .site-nav[data-open]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-link{
    width:100%;justify-content:flex-start;gap:12px;
    padding:14px 4px;font-size:1rem;
    border-bottom:1px solid var(--line);
  }
  .nav-link[aria-current="page"]{background:rgba(232,255,58,.08);padding-left:10px;border-left:3px solid var(--yellow)}
  .nav-link[aria-current="page"]::after{display:none}
  .nav-quick{
    flex-wrap:wrap;gap:10px;
    margin-top:16px;padding:14px 0 0;
    border-left:0;border-top:1px solid var(--line);
  }
  .layout-rail{grid-template-columns:minmax(0,1fr)}
  .rail-col{border-right:0;border-bottom:1px solid var(--line);padding:18px 14px}
  .rail-sticky{position:static}
  .chapter-rail{flex-direction:row;flex-wrap:wrap;gap:6px 14px}
  .footer-top{align-items:flex-start;flex-direction:column}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-legal{justify-content:flex-start}
  .section-num{font-size:clamp(2.6rem,16vw,4rem)}
}

/* ---------- 动效偏好 ---------- */
@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}
  .status-dot{animation:none}
}