/* =========================================================
   中欧赛事 / KOK — 共享样式 site.css
   更衣室轨道 + 命令栏 + 黑白高对比 + KOK 橙信号
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#141819;
  --paper:#F6F7F1;
  --steel:#2B3234;
  --metal:#7A8582;
  --concrete:#D5DAD4;
  --turf:#2F6B45;
  --turf-light:#A9C9B5;
  --orange:#F36B21;
  --orange-ink:#A83E0A;
  --line:#B7C0BA;

  --rail-w:236px;
  --cmd-h:56px;

  --font-head:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shadow-hard:6px 6px 0 rgba(20,24,25,.16);
  --shadow-hard-sm:3px 3px 0 rgba(20,24,25,.18);
  --dur:200ms;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--cmd-h) + 12px);
}
body,
h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:var(--turf);text-underline-offset:3px}
[hidden]{display:none !important}
main{display:block}
#main-content{display:block}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

::selection{background:var(--turf-light);color:var(--ink)}

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

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.15;
}
h1{font-size:clamp(34px,4.6vw,60px)}
h2{font-size:clamp(26px,3vw,36px)}
h3{font-size:clamp(19px,2vw,23px)}

.num,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 3. 布局骨架：品牌轨道 + 命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
}

/* --- 3.1 左侧品牌轨道 --- */
.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--rail-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  padding:22px 18px 18px;
  background-color:var(--steel);
  background-image:repeating-linear-gradient(0deg,transparent 0 42px,rgba(246,247,241,.045) 42px 43px);
  color:#cfd6d1;
  border-right:3px solid var(--ink);
  overflow-y:auto;
  overscroll-behavior:contain;
}

.rail__brand{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-bottom:18px;
  border-bottom:1px solid #46504f;
}
.rail__hook{
  width:26px;
  height:26px;
  border:2px solid var(--turf-light);
  border-left:7px solid var(--orange);
}
.rail__lockup{
  display:flex;
  flex-direction:column;
  gap:5px;
  text-decoration:none;
  color:var(--paper);
}
.rail__mark{
  font-family:var(--font-head);
  font-size:25px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.05;
}
.rail__kok{
  align-self:flex-start;
  padding:2px 6px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  background:var(--orange);
  color:#1a0d05;
}
.rail__tagline{
  font-size:12px;
  line-height:1.5;
  color:var(--metal);
  letter-spacing:.02em;
}

.rail__nav{margin-top:16px}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-list__item{display:block}
.nav-link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:9px 10px 9px 12px;
  font-family:var(--font-head);
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  color:#c9d1cb;
  text-decoration:none;
  border-left:3px solid transparent;
  transition:background var(--dur) ease-out,color var(--dur) ease-out,border-color var(--dur) ease-out;
}
.nav-link:hover{
  background:rgba(246,247,241,.08);
  color:var(--paper);
  border-left-color:var(--turf-light);
}
.nav-link__idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--metal);
}
.nav-link__label{display:inline-block}
.nav-link[aria-current="page"]{
  background:var(--ink);
  color:var(--paper);
  border-left-color:var(--orange);
}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--orange)}

.rail__foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:18px;
  border-top:1px solid #46504f;
}
.rail__status{
  display:flex;
  align-items:center;
  gap:7px;
  font-size:11px;
  line-height:1.5;
  color:var(--metal);
  letter-spacing:.03em;
}
.rail__dot{
  flex:0 0 auto;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--turf-light);
  box-shadow:0 0 0 3px rgba(169,201,181,.18);
}
.rail .btn{
  width:100%;
  justify-content:center;
  padding:10px 12px;
  font-size:13px;
  box-shadow:4px 4px 0 #101415;
}
.rail__help{
  font-size:11px;
  line-height:1.5;
  color:#9aa5a0;
  text-decoration:underline;
  text-underline-offset:3px;
}
.rail__help:hover{color:var(--orange)}

/* --- 3.2 命令栏 --- */
.cmdbar{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:var(--cmd-h);
  padding:0 20px;
  background:var(--ink);
  color:var(--paper);
  border-bottom:3px solid var(--steel);
}
.cmdbar__toggle{
  display:none;
  flex:0 0 auto;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  width:42px;
  height:36px;
  border:2px solid var(--metal);
  cursor:pointer;
}
.cmdbar__toggle:hover{border-color:var(--turf-light)}
.cmdbar__toggle-bar{
  display:block;
  width:18px;
  height:2px;
  background:var(--paper);
  transition:transform var(--dur) ease-out,opacity var(--dur) ease-out;
}
.cmdbar__toggle[aria-expanded="true"] .cmdbar__toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.cmdbar__toggle[aria-expanded="true"] .cmdbar__toggle-bar:nth-child(2){opacity:0}
.cmdbar__toggle[aria-expanded="true"] .cmdbar__toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.cmdbar__current{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-head);
  font-size:15px;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--paper);
  white-space:nowrap;
}
.cmdbar__dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--turf-light);
  box-shadow:0 0 0 3px rgba(169,201,181,.16);
}
.cmdbar__current-label{color:var(--paper)}
.cmdbar__meta{
  display:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--metal);
  white-space:nowrap;
}
.cmdbar__cta{
  margin-left:auto;
  padding:8px 14px;
  font-family:var(--font-head);
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  text-decoration:none;
  background:var(--orange);
  color:#1a0d05;
  border:2px solid #0d1011;
  box-shadow:3px 3px 0 #0a0d0e;
  white-space:nowrap;
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.cmdbar__cta:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 #0a0d0e}
.cmdbar__cta:active{transform:translate(2px,2px);box-shadow:1px 1px 0 #0a0d0e}

.cmdbar__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:rgba(246,247,241,.14);
  pointer-events:none;
}
.cmdbar__progress-bar{
  display:block;
  width:0;
  height:100%;
  background:var(--orange);
  transition:width 120ms linear;
}

/* --- 3.3 跳转链接 --- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:120;
  padding:10px 16px;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  background:var(--orange);
  color:#1a0d05;
  border:2px solid var(--ink);
  transform:translateY(-180%);
  transition:transform var(--dur) ease-out;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 4. 容器 / 章节 ---------- */
.container{
  width:100%;
  max-width:1180px;
  margin-inline:auto;
  padding-inline:24px;
}
.container--wide{max-width:1360px}

.section{padding-block:64px}
.section--tight{padding-block:32px}
.section--concrete{
  background:var(--concrete);
  border-block:2px solid var(--line);
}
.section--ink{
  background:var(--ink);
  color:#e7ebe4;
}
.section--ink .sec-head{border-bottom-color:var(--metal)}
.section--ink .sec-head__title{color:var(--paper)}
.section--ink .sec-head__kicker{color:var(--turf-light)}

.sec-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:8px 24px;
  padding-bottom:12px;
  margin-bottom:28px;
  border-bottom:3px solid var(--ink);
}
.sec-head__kicker{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--turf);
}
.sec-head__title{
  font-family:var(--font-head);
  font-size:clamp(26px,3vw,34px);
  letter-spacing:-.015em;
  line-height:1.15;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--orange-ink);
}
.eyebrow::before{
  content:"";
  width:10px;
  height:10px;
  background:var(--orange);
  flex:0 0 auto;
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 18px;
  font-family:var(--font-head);
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  text-decoration:none;
  background:var(--paper);
  color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:4px 4px 0 var(--ink);
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,background var(--dur) ease-out;
}
.btn:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.btn--signal{background:var(--orange);color:#1a0d05}
.btn--signal:hover{background:#ff7b33}
.btn--ghost{background:transparent;box-shadow:none}
.btn--ghost:hover{background:var(--concrete);box-shadow:none;transform:none}

/* ---------- 6. 网格 ---------- */
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--7-5{grid-template-columns:7fr 5fr}
.grid--8-4{grid-template-columns:8fr 4fr}

/* ---------- 7. 卡片 ---------- */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:22px;
  background:var(--paper);
  border:2px solid var(--ink);
  box-shadow:var(--shadow-hard);
}
.card__num{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--orange-ink);
}
.card__title{
  font-family:var(--font-head);
  font-size:22px;
  line-height:1.2;
  letter-spacing:-.01em;
}
.card__text{
  font-size:15px;
  line-height:1.75;
  color:#3b4341;
}
.card__tags{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin-top:auto;
  padding-top:8px;
}

/* ---------- 8. 标签牌 ---------- */
.tag{
  display:inline-block;
  padding:2px 8px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  background:var(--concrete);
  color:var(--steel);
  border:1px solid var(--line);
}
.tag--turf{background:var(--turf-light);border-color:var(--turf);color:#14331f}
.tag--signal{background:var(--orange);border-color:var(--orange-ink);color:#1a0d05}

/* ---------- 9. 索引条 ---------- */
.idxbar{
  display:flex;
  flex-direction:column;
  border-top:2px solid var(--ink);
}
.idxbar__item{
  display:grid;
  grid-template-columns:56px minmax(0,1fr) auto;
  gap:16px;
  align-items:baseline;
  padding:14px 4px;
  color:inherit;
  text-decoration:none;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) ease-out,padding-left var(--dur) ease-out;
}
.idxbar__item:hover{background:var(--concrete);padding-left:10px}
.idxbar__num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--metal);
}
.idxbar__label{
  font-family:var(--font-head);
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.3;
}
.idxbar__meta{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--metal);
  white-space:nowrap;
}

/* ---------- 10. 数据表 ---------- */
.table-wrap{
  max-width:100%;
  overflow-x:auto;
  background:var(--paper);
  border:2px solid var(--ink);
}
.data-table{
  width:100%;
  min-width:520px;
  border-collapse:collapse;
  font-size:14px;
  line-height:1.6;
}
.data-table caption{
  padding:10px 14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  text-align:left;
  color:var(--metal);
  border-bottom:1px solid var(--line);
}
.data-table th{
  position:sticky;
  top:var(--cmd-h);
  z-index:1;
  padding:10px 14px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--steel);
  background:var(--concrete);
  border-bottom:2px solid var(--ink);
  white-space:nowrap;
}
.data-table td{
  padding:10px 14px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.data-table tbody tr:hover{background:#eef0e9}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table .num{letter-spacing:.02em}

/* ---------- 11. 状态面板 ---------- */
.panel{
  background:var(--steel);
  color:#dfe4de;
  border:2px solid var(--ink);
  box-shadow:var(--shadow-hard);
}
.panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 16px;
  background:var(--ink);
  color:var(--paper);
  border-bottom:2px solid var(--ink);
}
.panel__title{
  font-family:var(--font-head);
  font-size:16px;
  font-weight:700;
  letter-spacing:.05em;
}
.panel__body{padding:16px}
.panel__body a{color:var(--turf-light)}
.panel__body .tag{background:rgba(246,247,241,.1);border-color:var(--metal);color:#dfe4de}

/* ---------- 12. 主题筛选 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-bottom:12px;
  margin-bottom:24px;
  border-bottom:2px solid var(--ink);
}
.filter-chip{
  position:relative;
  padding:7px 12px;
  font-size:13px;
  font-weight:700;
  line-height:1.4;
  color:var(--ink);
  background:var(--paper);
  border:2px solid var(--ink);
  cursor:pointer;
  transition:background var(--dur) ease-out,color var(--dur) ease-out,transform var(--dur) ease-out;
}
.filter-chip:hover{background:var(--concrete);transform:translateY(-1px)}
.filter-chip[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.filter-chip[aria-pressed="true"]::after{
  content:"";
  position:absolute;
  left:6px;
  right:6px;
  bottom:-2px;
  height:3px;
  background:var(--orange);
}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--metal);
}
.filter-count::before{content:"显示 "}
.filter-count::after{content:" 项"}

/* ---------- 13. 图片容器 ---------- */
.media-frame{
  position:relative;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background:var(--concrete);
  border:3px solid var(--ink);
  box-shadow:8px 8px 0 rgba(20,24,25,.12);
}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  background-color:var(--concrete);
  background-image:
    repeating-linear-gradient(90deg,transparent 0 39px,rgba(20,24,25,.09) 39px 40px),
    repeating-linear-gradient(0deg,transparent 0 39px,rgba(20,24,25,.09) 39px 40px);
}
.media-frame__tag{
  position:absolute;
  top:0;
  left:0;
  padding:5px 10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.1em;
  background:var(--orange);
  color:#1a0d05;
}
.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:8px 12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--paper);
  background:rgba(20,24,25,.86);
}

/* ---------- 14. 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  margin-bottom:22px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--metal);
}
.crumbs__item{display:inline-flex;align-items:center;gap:6px}
.crumbs__item:not(:last-child)::after{content:"／";color:var(--line)}
.crumbs a{color:var(--metal);text-decoration:none}
.crumbs a:hover{color:var(--turf);text-decoration:underline}
.crumbs__item[aria-current="page"]{color:var(--ink)}

/* ---------- 15. 长文与边注 ---------- */
.prose{
  max-width:44em;
  font-size:17px;
  line-height:1.8;
  color:#2a3130;
}
.prose > * + *{margin-top:18px}
.prose h2{
  margin-top:34px;
  font-family:var(--font-head);
  font-size:28px;
  letter-spacing:-.01em;
}
.prose h3{font-family:var(--font-head);font-size:21px}
.prose ul{list-style:disc;padding-left:1.3em}
.prose li + li{margin-top:6px}
.prose a{color:var(--turf);text-underline-offset:3px}
.prose strong{font-weight:700;color:var(--ink)}

.note{
  padding:12px 16px;
  font-size:15px;
  line-height:1.75;
  color:#233026;
  background:rgba(169,201,181,.2);
  border-left:4px solid var(--turf);
}

/* ---------- 16. 折叠面板 ---------- */
.accordion{border-top:2px solid var(--ink)}
.accordion__item{border-bottom:2px solid var(--ink)}
.accordion__btn{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  width:100%;
  padding:16px 2px;
  font-family:var(--font-head);
  font-size:18px;
  font-weight:700;
  letter-spacing:-.005em;
  text-align:left;
  color:var(--ink);
  cursor:pointer;
}
.accordion__btn::after{
  content:"＋";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:16px;
  color:var(--metal);
}
.accordion__btn[aria-expanded="true"]::after{content:"－";color:var(--orange)}
.accordion__panel{
  padding:0 2px 18px;
  font-size:15px;
  line-height:1.8;
  color:#3b4341;
  max-width:44em;
}

/* ---------- 17. 页脚 ---------- */
.site-footer{
  background-color:var(--steel);
  background-image:repeating-linear-gradient(90deg,transparent 0 58px,rgba(246,247,241,.035) 58px 59px);
  color:#cfd6d1;
  border-top:4px solid var(--ink);
}
.footer__inner{
  width:100%;
  max-width:1180px;
  margin-inline:auto;
  padding:52px 24px 24px;
}
.footer__top{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1.4fr) minmax(0,1.1fr);
  gap:36px;
  padding-bottom:32px;
  border-bottom:1px solid #46504f;
}
.footer__brand{display:flex;flex-direction:column;gap:12px}
.footer__lockup{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-head);
  font-size:24px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--paper);
}
.footer__kok{
  padding:2px 7px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  background:var(--orange);
  color:#1a0d05;
}
.footer__tag{
  max-width:26em;
  font-size:13px;
  line-height:1.7;
  color:#9aa5a0;
}
.footer__hookrow{
  display:flex;
  gap:6px;
  margin-top:4px;
}
.footer__hook{
  display:flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:22px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--metal);
  border:1px solid #46504f;
  border-left:4px solid var(--turf);
}
.footer__cols{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.footer__col{display:flex;flex-direction:column;gap:10px}
.footer__heading{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--turf-light);
}
.footer__list{display:flex;flex-direction:column;gap:8px}
.footer__link{
  font-size:14px;
  color:#cfd6d1;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) ease-out,border-color var(--dur) ease-out;
}
.footer__link:hover{color:var(--orange);border-bottom-color:var(--orange)}

.footer__contact{display:flex;flex-direction:column;gap:10px}
.footer__address{
  display:flex;
  flex-direction:column;
  gap:6px;
  font-style:normal;
  font-size:13px;
  line-height:1.6;
  color:#cfd6d1;
  word-break:break-word;
}
.contact-line{
  display:flex;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
}
.contact-line__key{
  flex:0 0 auto;
  min-width:30px;
  color:var(--metal);
}
.contact-note{
  font-size:12px;
  line-height:1.7;
  color:#9aa5a0;
  border-left:2px solid #46504f;
  padding-left:10px;
}

.footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-top:20px;
}
.footer__copy{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--metal);
}
.footer__legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.footer__legal-link{
  font-size:12px;
  color:#9aa5a0;
  text-decoration:none;
}
.footer__legal-link:hover{color:var(--paper);text-decoration:underline}

/* ---------- 18. 响应式 ---------- */
@media (min-width:640px){
  .cmdbar__meta{display:inline-block;margin-left:auto}
  .cmdbar__cta{margin-left:0}
}

@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .skip-link{left:calc(var(--rail-w) + 12px)}
  .section{padding-block:76px}
  .footer__inner{padding-top:60px}
}

@media (max-width:1023px){
  .rail{
    width:min(86vw,320px);
    transform:translateX(-104%);
    box-shadow:none;
    transition:transform 220ms ease-out;
    z-index:70;
  }
  .rail[data-open]{
    transform:translateX(0);
    box-shadow:0 0 0 100vmax rgba(20,24,25,.55);
  }
  .cmdbar__toggle{display:inline-flex}
  .footer__top{grid-template-columns:1fr 1fr}
  .footer__contact{grid-column:1 / -1}
}

@media (max-width:900px){
  .grid--2,.grid--3,.grid--7-5,.grid--8-4{grid-template-columns:1fr}
  .section{padding-block:48px}
  .footer__top{grid-template-columns:1fr;gap:28px}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:640px){
  .container{padding-inline:18px}
  .footer__inner{padding-inline:18px;padding-top:40px}
  .cmdbar{padding:0 14px;gap:10px}
  .cmdbar__current{font-size:14px}
  .cmdbar__cta{font-size:13px;padding:7px 11px}
  .idxbar__item{grid-template-columns:44px minmax(0,1fr);gap:10px}
  .idxbar__meta{grid-column:2;white-space:normal}
  .footer__cols{grid-template-columns:1fr}
  .footer__legal{flex-direction:column;align-items:flex-start}
}

/* ---------- 19. 无障碍与动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .rail,.nav-link,.btn,.cmdbar__cta,.filter-chip,.idxbar__item,.footer__link,.skip-link{transition:none}
  .btn:hover,.btn:active,.cmdbar__cta:hover,.cmdbar__cta:active,.filter-chip:hover,.idxbar__item:hover{transform:none}
}