/* ============================================================
   万搏体育中文站台 · 共享样式 /assets/site.css
   夜间赛场监控室 · 展览画册式连续画布
   ============================================================ */

/* ---------- 01 设计令牌 ---------- */
:root{
  --ink-900:#0A0E0C;
  --ink-800:#10201A;
  --ink-700:#0D1815;
  --line:#22443A;
  --line-soft:rgba(34,68,58,.55);
  --cyan:#3FE0C8;
  --mist:#12463E;
  --warn:#FF7A33;
  --lime:#C8E34D;
  --text:#D6E2DD;
  --muted:#8B9C95;
  --paper:#F4F8F6;

  --radius:4px;
  --shell:1480px;
  --gutter:clamp(1rem,2.6vw,2.5rem);
  --measure:42ch;
  --ease:cubic-bezier(.22,.72,.18,1);
  --dur:180ms;
  --header-h:100px;

  --font-display:"Oswald","Barlow Condensed","Arial Narrow","Helvetica Neue",system-ui,"Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

/* ---------- 02 Reset 与基础排版 ---------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-padding-top:calc(var(--header-h) + 1.25rem);
}

body{
  margin:0;
  min-height:100%;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(900px 520px at 86% -10%, rgba(18,70,62,.55), rgba(10,14,12,0) 62%),
    radial-gradient(700px 460px at -5% 105%, rgba(18,70,62,.28), rgba(10,14,12,0) 70%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:700;line-height:1.08;letter-spacing:.02em;color:var(--paper)}
p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse}

/* ---------- 03 工具类 ---------- */
.shell{width:min(var(--shell),100% - (var(--gutter) * 2));margin-inline:auto}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.02em}
.display{font-family:var(--font-display);font-weight:700;line-height:1.05;letter-spacing:.02em;color:var(--paper)}
.muted{color:var(--muted)}
.accent{color:var(--cyan)}
.lede{max-width:var(--measure);color:var(--muted);font-size:17px;line-height:1.75}
.divider{height:1px;margin:0;border:0;background:var(--line-soft)}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.index-num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(3rem,12vw,8.5rem);
  line-height:.82;
  color:transparent;
  -webkit-text-stroke:1px var(--line);
  letter-spacing:.02em;
}

.skip-link{
  position:fixed;
  top:0;
  left:50%;
  z-index:300;
  padding:.6rem 1.1rem;
  transform:translate(-50%,-140%);
  background:var(--cyan);
  color:#04120F;
  font-family:var(--font-display);
  font-size:.85rem;
  letter-spacing:.14em;
  text-decoration:none;
  border-radius:0 0 var(--radius) var(--radius);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translate(-50%,0)}

/* ---------- 04 区块与栅格 ---------- */
.section{
  padding-block:clamp(3.5rem,7vw,6.5rem);
  border-top:1px solid var(--line-soft);
}
.section--flush{border-top:0}
.section--paper{
  background:var(--paper);
  color:#16211D;
  border-top-color:transparent;
}
.section--paper h2,
.section--paper h3,
.section--paper .section__title{color:#0A0E0C}
.section--paper .section__lede,
.section--paper .muted,
.section--paper .lede{color:#5B6B65}
.section--paper .prose{color:#1B2823}
.section--paper .prose a{color:#0F6E5F;border-bottom-color:rgba(15,110,95,.4)}
.section--paper .divider{background:rgba(10,14,12,.16)}
.section--paper .media__frame{border-color:rgba(10,14,12,.18)}

.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem;
  margin-bottom:clamp(1.5rem,3vw,2.5rem);
}
.eyebrow{
  display:inline-block;
  margin-bottom:.6rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.section__title{font-size:clamp(1.5rem,3vw,2.5rem)}
.section__lede{max-width:var(--measure);margin-top:.75rem;color:var(--muted)}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gutter)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-12{grid-column:span 12}

.layout-rail{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gutter)}
.layout-rail__aside{grid-column:span 2}
.layout-rail__main{grid-column:span 10;min-width:0}

/* ---------- 05 按钮 / 标签 / 状态 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.68rem 1.1rem;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:transparent;
  color:var(--text);
  font-family:var(--font-display);
  font-size:.82rem;
  letter-spacing:.16em;
  text-decoration:none;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.btn:hover,
.btn:focus-visible{
  border-color:var(--cyan);
  color:var(--cyan);
  transform:translateY(-2px);
  box-shadow:0 10px 26px -18px rgba(63,224,200,.9);
}
.btn--solid{background:var(--cyan);border-color:var(--cyan);color:#04120F;font-weight:700}
.btn--solid:hover,
.btn--solid:focus-visible{background:#6BEFDC;border-color:#6BEFDC;color:#04120F}
.btn--ghost{background:rgba(63,224,200,.05)}
.btn--quiet{border-color:transparent;color:var(--muted);padding-inline:.4rem}
.btn--quiet:hover{border-color:var(--line);color:var(--cyan)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.16rem .5rem;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
}
.tag--up{color:var(--cyan);border-color:rgba(63,224,200,.45);background:rgba(63,224,200,.08)}
.tag--playoff{color:var(--lime);border-color:rgba(200,227,77,.42);background:rgba(200,227,77,.08)}
.tag--down{color:var(--warn);border-color:rgba(255,122,51,.45);background:rgba(255,122,51,.1)}

.chip{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.35rem .8rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(63,224,200,.4)}
.chip[aria-pressed="true"]{
  color:#04120F;
  background:var(--cyan);
  border-color:var(--cyan);
  font-weight:700;
}

.stat{display:flex;flex-direction:column;gap:.3rem}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.5rem,3vw,2.35rem);
  line-height:1;
  color:var(--paper);
}
.stat__label{font-size:13px;color:var(--muted)}

/* ---------- 06 表格 / 折叠 / 面包屑 / 锚点 / 正文 ---------- */
.data-table{width:100%;font-size:15px}
.data-table caption{
  caption-side:top;
  text-align:left;
  padding-bottom:.6rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--muted);
}
.data-table th{
  padding:.6rem .75rem;
  text-align:left;
  font-family:var(--font-display);
  font-size:.76rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--muted);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.data-table td{
  padding:.6rem .75rem;
  border-bottom:1px solid var(--line-soft);
  font-variant-numeric:tabular-nums;
}
.data-table tbody tr:hover{background:rgba(63,224,200,.045)}

.fold{border-top:1px solid var(--line-soft)}
.fold__summary{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:1rem;
  padding:1rem 0;
  cursor:pointer;
  list-style:none;
  font-family:var(--font-display);
  font-size:1.02rem;
  letter-spacing:.06em;
  color:var(--paper);
  transition:color var(--dur) var(--ease);
}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary:hover{color:var(--cyan)}
.fold__summary::after{
  content:"＋";
  font-family:var(--font-mono);
  font-size:.9rem;
  color:var(--cyan);
}
.fold[open] > .fold__summary::after{content:"－"}
.fold__body{padding:.2rem 0 1.35rem;color:var(--muted);font-size:15.5px;max-width:var(--measure)}

.breadcrumb{font-family:var(--font-mono);font-size:12.5px;color:var(--muted)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem}
.breadcrumb__link{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.breadcrumb__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb__sep{color:var(--line)}

.anchor-nav{position:sticky;top:calc(var(--header-h) + 1.25rem)}
.anchor-nav__list{display:flex;flex-direction:column;gap:.15rem}
.anchor-nav__link{
  display:block;
  padding:.4rem 0 .4rem .8rem;
  border-left:1px solid var(--line);
  color:var(--muted);
  font-size:13.5px;
  line-height:1.5;
  text-decoration:none;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.anchor-nav__link:hover{color:var(--text)}
.anchor-nav__link[aria-current="true"]{color:var(--cyan);border-left-color:var(--cyan)}

.prose{max-width:var(--measure);font-size:17px;line-height:1.75;color:var(--text)}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:clamp(1.3rem,2vw,1.7rem);letter-spacing:.03em}
.prose h3{font-size:1.08rem}
.prose ul{display:flex;flex-direction:column;gap:.5rem}
.prose ul li{position:relative;padding-left:1.15rem}
.prose ul li::before{content:"";position:absolute;left:0;top:.78em;width:9px;height:1px;background:var(--cyan)}
.prose ol{list-style:decimal;padding-left:1.4rem}
.prose ol li{padding-left:.2rem}
.prose a{color:var(--cyan);text-decoration:none;border-bottom:1px solid rgba(63,224,200,.45)}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose blockquote{padding-left:1rem;border-left:2px solid var(--cyan);color:var(--muted)}
.prose code{font-family:var(--font-mono);font-size:.92em;color:var(--lime)}

/* ---------- 07 图像容器（页面阶段放图用） ---------- */
.media{margin:0}
.media__frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  aspect-ratio:16 / 9;
  background-color:var(--ink-700);
  background-image:linear-gradient(160deg, rgba(18,70,62,.72), rgba(10,14,12,.95) 72%);
}
.media__frame--wide{aspect-ratio:21 / 9}
.media__frame--tall{aspect-ratio:3 / 4}
.media__frame--square{aspect-ratio:1 / 1}
.media__frame--scan::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(180deg, rgba(63,224,200,.08) 0 1px, rgba(0,0,0,0) 1px 5px);
  opacity:.7;
}
.media__img{width:100%;height:100%;object-fit:cover;filter:saturate(.86) contrast(1.06)}
.media__badge{
  position:absolute;
  left:.7rem;
  bottom:.7rem;
  padding:.16rem .5rem;
  border:1px solid rgba(63,224,200,.45);
  border-radius:2px;
  background:rgba(10,14,12,.72);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--cyan);
}
.media__caption{margin-top:.6rem;font-size:13px;color:var(--muted);line-height:1.6}
.media-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--gutter)}

/* ---------- 08 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg, rgba(16,32,26,.97), rgba(10,14,12,.94));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled]{box-shadow:0 20px 44px -34px #000, 0 1px 0 rgba(63,224,200,.16)}

.schedule-rail{
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(90deg, rgba(18,70,62,.62), rgba(10,14,12,.12) 46%, rgba(10,14,12,0));
}
.schedule-rail__inner{
  display:flex;
  align-items:center;
  gap:.9rem;
  min-height:34px;
  font-size:12.5px;
  overflow:hidden;
  white-space:nowrap;
}
.rail__group{display:flex;align-items:baseline;gap:.45rem;flex:0 0 auto}
.rail__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted);
}
.rail__value{font-size:12.5px;color:var(--cyan)}
.rail__divider{flex:0 0 auto;width:1px;height:14px;background:var(--line)}
.rail__tags{display:flex;align-items:center;gap:.4rem;min-width:0;flex:1 1 auto;overflow:hidden}
.rail__tag{
  padding:.08rem .45rem;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.6;
  color:var(--muted);
}
.rail__tag--live{color:var(--cyan);border-color:rgba(63,224,200,.42);background:rgba(63,224,200,.07)}
.rail__actions{display:flex;align-items:center;gap:.9rem;margin-left:auto;flex:0 0 auto}
.rail__link{
  font-size:12px;
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail__link:hover,
.rail__link:focus-visible{color:var(--text);border-bottom-color:var(--cyan)}
.rail__link--accent{color:var(--cyan)}

.masthead{display:flex;align-items:center;gap:1.25rem;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:.7rem;text-decoration:none;flex:0 0 auto}
.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border:1px solid var(--line);
  border-radius:2px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cyan);
  background:linear-gradient(145deg, rgba(18,70,62,.9), rgba(10,14,12,.4));
  box-shadow:inset 0 0 12px rgba(63,224,200,.14);
}
.brand__text{display:flex;flex-direction:column;line-height:1.18}
.brand__name{font-family:var(--font-display);font-size:1.05rem;letter-spacing:.16em;color:var(--paper)}
.brand__line{font-size:11.5px;letter-spacing:.03em;color:var(--muted)}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  margin-left:auto;
  padding:.5rem .7rem;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--text);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  display:block;
  width:20px;
  height:14px;
  background-image:linear-gradient(currentColor,currentColor),linear-gradient(currentColor,currentColor),linear-gradient(currentColor,currentColor);
  background-size:100% 2px;
  background-position:0 0, 0 6px, 0 12px;
  background-repeat:no-repeat;
}

.primary-nav{
  display:none;
  position:absolute;
  left:0;
  right:0;
  top:100%;
  max-height:calc(100vh - var(--header-h));
  overflow-y:auto;
  padding:.5rem var(--gutter) 1.35rem;
  background:linear-gradient(180deg, rgba(16,32,26,.99), rgba(10,14,12,.99));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  box-shadow:0 30px 64px -34px #000;
}
.primary-nav[data-open]{display:block}
.primary-nav__list{display:flex;flex-direction:column}
.primary-nav__item{border-bottom:1px solid var(--line-soft)}
.nav-link{
  display:flex;
  align-items:baseline;
  gap:.6rem;
  padding:.85rem 0;
  color:var(--muted);
  font-family:var(--font-display);
  font-size:1rem;
  letter-spacing:.1em;
  text-decoration:none;
  transition:color var(--dur) var(--ease);
}
.nav-link__index{font-family:var(--font-mono);font-size:.72rem;letter-spacing:0;color:#3E5C53;transition:color var(--dur) var(--ease)}
.nav-link__label{display:inline-block}
.nav-link:hover,
.nav-link:focus-visible{color:var(--cyan)}
.nav-link:hover .nav-link__index{color:var(--cyan)}
.nav-link[aria-current="page"]{color:var(--paper)}
.nav-link[aria-current="page"] .nav-link__index{color:var(--cyan)}
.nav-cta{width:100%;margin-top:1.1rem}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  overflow:hidden;
  background:rgba(34,68,58,.55);
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg, var(--mist), var(--cyan) 72%, var(--lime));
  transition:width 120ms linear;
}

/* ---------- 09 页脚 ---------- */
.site-footer{
  margin-top:clamp(3rem,6vw,5rem);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(16,32,26,.78), rgba(10,14,12,1));
}
.status-band{
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(90deg, rgba(18,70,62,.55), rgba(10,14,12,0) 62%);
}
.status-band__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.6rem 1rem;
  min-height:46px;
  font-size:12.5px;
}
.status-band__text{display:inline-flex;align-items:center;gap:.5rem;color:var(--text)}
.status-band__dot{
  display:inline-block;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(63,224,200,.16);
  animation:status-pulse 2.6s var(--ease) infinite;
}
@keyframes status-pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(63,224,200,.16);opacity:1}
  50%{box-shadow:0 0 0 7px rgba(63,224,200,0);opacity:.55}
}
.status-band__meta{color:var(--muted);letter-spacing:.04em}
.status-band__actions{display:flex;align-items:center;gap:.9rem;margin-left:auto}
.status-band__link{
  color:var(--muted);
  font-size:12.5px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.status-band__link:hover,
.status-band__link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__top{
  padding:.24rem .6rem;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer__top:hover,
.footer__top:focus-visible{color:var(--cyan);border-color:var(--cyan);transform:translateY(-2px)}

.footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.6fr;
  gap:clamp(1.5rem,3vw,3rem);
  padding-block:clamp(2.5rem,5vw,4rem);
}
.footer__name{font-family:var(--font-display);font-size:1.12rem;letter-spacing:.14em;color:var(--paper)}
.footer__desc{max-width:34ch;margin-top:.7rem;font-size:14px;line-height:1.75;color:var(--muted)}
.footer__col-title{
  margin-bottom:.9rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer__list{display:flex;flex-direction:column;gap:.5rem}
.footer__link{
  color:var(--text);
  font-size:14.5px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__contact{display:flex;flex-direction:column;gap:.5rem;font-size:14px;color:var(--muted)}
.footer__contact-line{display:flex;gap:.6rem;align-items:baseline}
.footer__contact-key{
  flex:0 0 2.6rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.footer__contact-value{min-width:0;overflow-wrap:anywhere}
.footer__contact-note{margin-top:.35rem;font-size:12.5px;color:var(--muted)}

.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.6rem 1.5rem;
  padding-block:1.1rem 1.8rem;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  color:var(--muted);
}
.footer__copy{letter-spacing:.02em}
.footer__legal{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem}
.footer__legal-link{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer__legal-link:hover,
.footer__legal-link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__note{flex:1 1 100%;color:var(--muted)}

/* ---------- 10 动效：进入视口点亮一次 ---------- */
[data-pulse]{transition:box-shadow 200ms var(--ease)}
[data-pulse].is-lit{animation:pulse-flash 640ms var(--ease) 1 both}
@keyframes pulse-flash{
  0%{opacity:.25;box-shadow:0 0 0 0 rgba(63,224,200,.55)}
  45%{opacity:1;box-shadow:0 0 0 6px rgba(63,224,200,0)}
  100%{opacity:1;box-shadow:0 0 0 0 rgba(63,224,200,0)}
}

/* ---------- 11 聚焦可见 ---------- */
:focus{outline:none}
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}
.nav-link:focus-visible,
.rail__link:focus-visible,
.footer__link:focus-visible{outline-offset:5px}

/* ---------- 12 响应式 ---------- */
@media (min-width:1024px){
  .nav-toggle{display:none}
  .primary-nav{
    display:flex;
    align-items:center;
    gap:1.4rem;
    position:static;
    margin-left:auto;
    max-height:none;
    overflow:visible;
    padding:0;
    border:0;
    background:none;
    box-shadow:none;
  }
  .primary-nav__list{flex-direction:row;gap:1.3rem}
  .primary-nav__item{border-bottom:0}
  .nav-link{position:relative;padding:.35rem .1rem;font-size:.9rem;letter-spacing:.12em}
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:-4px;
    height:2px;
    background:var(--cyan);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform var(--dur) var(--ease);
  }
  .nav-link:hover::after,
  .nav-link:focus-visible::after{transform:scaleX(1)}
  .nav-link[aria-current="page"]{color:var(--paper)}
  .nav-link[aria-current="page"]::after{transform:scaleX(1)}
  .nav-cta{width:auto;margin-top:0}
}

@media (max-width:1024px){
  :root{--header-h:90px}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-3,.span-4,.span-5{grid-column:span 6}
  .span-7,.span-8,.span-9{grid-column:span 12}
  .layout-rail{grid-template-columns:1fr}
  .layout-rail__aside,
  .layout-rail__main{grid-column:auto}
  .anchor-nav{position:static}
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1 / -1}
  .status-band__meta{margin-left:0}
  .status-band__actions{margin-left:auto}
}

@media (max-width:720px){
  :root{--header-h:80px}
  .rail__label{display:none}
  .rail__tags .rail__tag:nth-child(n+3){display:none}
  .grid,
  .grid--2,
  .grid--3{grid-template-columns:1fr}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:auto}
  .masthead{min-height:58px;gap:.8rem}
  .brand__line{display:none}
  .footer__grid{grid-template-columns:1fr;gap:2rem}
  .footer__desc{max-width:none}
  .footer__contact-line{flex-direction:column;gap:.15rem}
  .footer__contact-key{flex:none}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:.7rem}
  .footer__note{flex:none}
}

@media (max-width:520px){
  .rail__tags{display:none}
  .rail__group{flex:1 1 auto}
  .prose{font-size:16px}
}

/* ---------- 13 平滑滚动与减弱动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}

@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .btn:hover,
  .footer__top:hover{transform:none}
}