/* ============================================================
   诺亚体育 · 共享站点样式 /assets/site.css
   深海墨文字建筑 + 数据指挥台 + 粗野主义硬边细节
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#06141B;
  --panel:#0B2231;
  --panel-2:#103B4F;
  --paper:#F3F7F4;
  --pitch:#2ECC71;
  --pitch-deep:#147A50;
  --signal:#FF6B1A;
  --signal-soft:#FFB27A;
  --live:#B8FF3D;
  --mute:#8CA6B2;
  --line:#284A5A;

  --wrap-max:1240px;
  --gutter:clamp(16px,4vw,44px);
  --header-h:64px;

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

  --shadow-hard:10px 10px 0 rgba(3,10,14,.72);
  --shadow-soft:6px 6px 0 rgba(3,10,14,.6);
  --edge:3px solid var(--line);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
[hidden]{display:none !important}
h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
::selection{background:var(--signal);color:var(--ink)}
:focus-visible{outline:3px solid var(--live);outline-offset:3px}
[id]{scroll-margin-top:calc(var(--header-h) + 72px)}
#main-content{scroll-margin-top:calc(var(--header-h) + 56px)}

/* ---------- 3. 排版工具 ---------- */
.display-xl{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(64px,13vw,168px);
  line-height:.86;
  letter-spacing:-.015em;
  font-variant-numeric:tabular-nums;
}
.display{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(30px,5vw,56px);
  line-height:.98;
  letter-spacing:-.005em;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--mute);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--signal);flex:none}

/* ---------- 4. 容器与页面骨架 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(48px,7vw,96px);position:relative}
.section--tight{padding-block:clamp(28px,4vw,52px)}
.section--panel{background:var(--panel);border-block:var(--edge)}
.section--paper{background:var(--paper);color:var(--ink)}
.section--paper .eyebrow{color:#5b7480}
.section--paper .chapter-text{color:#41565f}

.page-head{
  padding-block:clamp(36px,6vw,76px);
  border-bottom:var(--edge);
}
.page-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(34px,6vw,64px);
  line-height:1.02;
  letter-spacing:-.01em;
}
.page-lede{
  max-width:34ch;
  margin-top:16px;
  color:var(--mute);
  line-height:1.85;
}
.section--paper .page-lede{color:#41565f}

/* ---------- 5. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.6vw,32px)}
.grid--split{grid-template-columns:5fr 7fr}
.grid--split-rev{grid-template-columns:7fr 5fr}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 6. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:14px;
  top:-120px;
  z-index:300;
  padding:10px 18px;
  background:var(--live);
  color:var(--ink);
  font-weight:800;
  font-size:14px;
  border:3px solid var(--ink);
  box-shadow:var(--shadow-soft);
  transition:top .18s ease;
}
.skip-link:focus{top:14px}

/* ---------- 7. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink);
  border-bottom:var(--edge);
}
.scroll-progress{
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:rgba(40,74,90,.55);
  overflow:hidden;
}
.scroll-progress-bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--pitch),var(--live) 55%,var(--signal));
  transition:width .12s linear;
}
.header-rail{background:transparent}
.header-inner{
  position:relative;
  width:100%;
  max-width:var(--wrap-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(12px,3vw,32px);
}

/* 品牌 */
.brand{
  position:relative;
  z-index:90;
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.brand-mark{
  width:17px;height:17px;
  flex:none;
  background:linear-gradient(135deg,var(--pitch) 0 49%,var(--signal) 50% 100%);
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 rgba(184,255,61,.35);
}
.brand-text{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(19px,2vw,24px);
  letter-spacing:.05em;
  line-height:1;
}
.brand-version{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--ink);
  background:var(--signal);
  padding:3px 6px 2px;
  line-height:1;
  box-shadow:3px 3px 0 rgba(3,10,14,.7);
}

/* 导航 */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.6vw,22px);
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(4px,1.3vw,18px);
}
.nav-link{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:10px 2px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--paper);
  border-bottom:3px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.nav-link:hover{color:var(--pitch);border-bottom-color:var(--pitch)}
.nav-link[aria-current="page"]{color:var(--signal);border-bottom-color:var(--signal)}
.nav-index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--mute);
  transition:color .18s ease;
}
.nav-link[aria-current="page"] .nav-index{color:var(--live)}
.nav-link:hover .nav-index{color:var(--signal-soft)}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 18px;
  font-size:14px;
  font-weight:800;
  letter-spacing:.04em;
  white-space:nowrap;
  color:var(--ink);
  background:var(--signal);
  border:3px solid var(--ink);
  box-shadow:5px 5px 0 rgba(3,10,14,.75);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.nav-cta:hover{background:var(--signal-soft);transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(3,10,14,.75)}
.nav-cta:active{transform:translate(2px,2px);box-shadow:1px 1px 0 rgba(3,10,14,.75)}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 12px;
  position:relative;
  z-index:90;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--paper);
  background:var(--panel);
  border:var(--edge);
  box-shadow:4px 4px 0 rgba(3,10,14,.7);
}
.nav-toggle-bar{
  position:relative;
  width:18px;height:2px;
  background:currentColor;
  box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;
  transition:background .16s ease,box-shadow .16s ease;
}
.nav-toggle[aria-expanded="true"]{color:var(--live);border-color:var(--live)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar{background:transparent;box-shadow:none}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before,
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after{
  content:"";
  position:absolute;
  inset:0;
  background:currentColor;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before{transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after{transform:rotate(-45deg)}
.nav-toggle-label{font-weight:700}

/* 计时带 */
.header-ticker{
  background:var(--panel);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.ticker-inner{
  width:100%;
  max-width:var(--wrap-max);
  margin-inline:auto;
  padding:6px var(--gutter);
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--mute);
  white-space:nowrap;
  overflow-x:auto;
  scrollbar-width:none;
}
.ticker-inner::-webkit-scrollbar{display:none}
.ticker-item{display:inline-flex;align-items:center;gap:8px;flex:none}
.ticker-sep{color:var(--line);flex:none}
.ticker-time{color:var(--live);letter-spacing:.14em}
.live-dot{
  width:7px;height:7px;
  flex:none;
  border-radius:50%;
  background:var(--live);
  box-shadow:0 0 0 3px rgba(184,255,61,.18);
  animation:pulse 2.6s ease-in-out infinite;
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink);
  border-top:var(--edge);
}
.footer-top{
  width:100%;
  max-width:var(--wrap-max);
  margin-inline:auto;
  padding:clamp(36px,6vw,72px) var(--gutter) clamp(26px,4vw,46px);
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1.4fr) minmax(0,1.1fr);
  gap:clamp(24px,4vw,56px);
}
.footer-brand-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
}
.footer-brand-link{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(26px,4vw,40px);
  line-height:1;
  letter-spacing:.03em;
  color:var(--paper);
  transition:color .18s ease;
}
.footer-brand-link:hover{color:var(--signal)}
.footer-version{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--ink);
  background:var(--pitch);
  padding:3px 6px 2px;
  line-height:1;
  box-shadow:3px 3px 0 rgba(3,10,14,.7);
}
.footer-statement{
  margin-top:16px;
  max-width:30ch;
  font-size:15px;
  line-height:1.85;
  color:var(--mute);
}
.footer-legend{
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.footer-columns{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(18px,3vw,32px);
  align-content:start;
}
.footer-col-title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--pitch);
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.footer-list{display:grid;gap:6px}
.footer-link{
  display:inline-block;
  padding:3px 0;
  font-size:14px;
  color:var(--mute);
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-link:hover{color:var(--paper);border-bottom-color:var(--signal)}
.footer-link[aria-current="page"]{color:var(--signal);border-bottom-color:var(--signal)}
.footer-contact{align-content:start}
.footer-contact-list{display:grid;gap:12px}
.footer-contact-key{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mute);
  margin-bottom:2px;
}
.footer-contact-val{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--paper);
  word-break:break-word;
}
.footer-hours{color:var(--live)}
.footer-cta{margin-top:18px}
.footer-bottom{
  width:100%;
  max-width:var(--wrap-max);
  margin-inline:auto;
  padding:0 var(--gutter) clamp(24px,4vw,40px);
}
.footer-bottom-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mute);
}
.footer-copyright{color:var(--mute)}
.footer-coords{color:var(--pitch);letter-spacing:.14em}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal-link{
  color:var(--mute);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-legal-link:hover{color:var(--paper);border-bottom-color:var(--pitch)}
.footer-note{
  flex:1 1 320px;
  max-width:56ch;
  font-family:var(--font-body);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.02em;
  color:var(--mute);
  opacity:.82;
}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:clamp(12px,3vw,28px);
  bottom:clamp(12px,3vw,28px);
  z-index:70;
  width:48px;height:48px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  background:var(--signal);
  border:3px solid var(--ink);
  box-shadow:5px 5px 0 rgba(3,10,14,.75);
  transition:transform .18s ease,background .18s ease;
}
.to-top:hover{background:var(--signal-soft);transform:translateY(-2px)}

/* ---------- 9. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:800;
  letter-spacing:.03em;
  color:var(--ink);
  background:var(--paper);
  border:3px solid var(--ink);
  box-shadow:var(--shadow-soft);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 rgba(3,10,14,.6)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 rgba(3,10,14,.6)}
.btn--primary{background:var(--signal);color:var(--ink)}
.btn--primary:hover{background:var(--signal-soft)}
.btn--ghost{
  background:transparent;
  color:var(--paper);
  border-color:var(--line);
  box-shadow:none;
}
.btn--ghost:hover{border-color:var(--pitch);color:var(--pitch);box-shadow:none;transform:none}
.btn--sm{padding:8px 15px;font-size:13px;box-shadow:4px 4px 0 rgba(3,10,14,.6)}

/* ---------- 10. 面板与卡片 ---------- */
.panel{
  background:var(--panel);
  border:var(--edge);
  padding:clamp(18px,2.6vw,30px);
}
.card{
  position:relative;
  background:var(--panel-2);
  border:var(--edge);
  box-shadow:var(--shadow-hard);
  padding:clamp(18px,2.6vw,28px);
}
.card::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:40px;height:3px;
  background:var(--pitch);
}
.card-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(19px,2.2vw,24px);
  line-height:1.2;
}
.card-meta{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mute);
}

/* ---------- 11. 编号章节 ---------- */
.chapter{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(12px,3vw,32px);
  align-items:start;
  padding-top:clamp(18px,3vw,32px);
  border-top:var(--edge);
}
.chapter-num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(28px,4.4vw,54px);
  line-height:.95;
  letter-spacing:-.02em;
  color:var(--pitch);
  font-variant-numeric:tabular-nums;
}
.chapter-num--signal{color:var(--signal)}
.chapter-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(22px,3vw,34px);
  line-height:1.15;
  letter-spacing:-.005em;
}
.chapter-text{
  max-width:34ch;
  margin-top:10px;
  color:var(--mute);
  font-size:15px;
  line-height:1.85;
}

/* ---------- 12. 标签与筛选 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mute);
  border:2px solid var(--line);
  background:transparent;
}
.tag--live{color:var(--live);border-color:rgba(184,255,61,.5)}
.tag--key{color:var(--ink);background:var(--signal);border-color:var(--ink);font-weight:700}

.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding-block:clamp(14px,2vw,22px);
}
.filter-btn{
  padding:8px 14px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mute);
  background:var(--panel);
  border:var(--edge);
  transition:color .18s ease,border-color .18s ease,background .18s ease,transform .18s ease;
}
.filter-btn:hover{color:var(--paper);border-color:var(--mute);transform:translateY(-1px)}
.filter-btn[aria-pressed="true"]{
  color:var(--ink);
  background:var(--signal);
  border-color:var(--ink);
  box-shadow:4px 4px 0 rgba(3,10,14,.7);
}
[data-filter-item].is-enter{animation:filterIn .3s ease both}

/* ---------- 13. 面包屑 ---------- */
.breadcrumb{padding-block:14px;border-bottom:1px solid var(--line)}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mute);
}
.breadcrumb-list > li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-list > li + li::before{content:"/";color:var(--line)}
.breadcrumb-link{color:var(--mute);transition:color .18s ease}
.breadcrumb-link:hover{color:var(--pitch)}
.breadcrumb-current{color:var(--paper)}

/* ---------- 14. 图片容器 ---------- */
.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:var(--panel-2);
  border:var(--edge);
  box-shadow:var(--shadow-hard);
}
.img-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:contrast(1.06) saturate(.94) brightness(.94);
}
.img-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(120% 100% at 50% 38%,rgba(6,20,27,0) 42%,rgba(6,20,27,.72) 100%);
}
.img-frame--wide{aspect-ratio:21 / 9}
.img-frame--tall{aspect-ratio:4 / 5}
.img-frame--tactical{
  background-image:
    linear-gradient(rgba(40,74,90,.55) 1px,transparent 1px),
    linear-gradient(90deg,rgba(40,74,90,.55) 1px,transparent 1px);
  background-size:44px 44px;
}
.img-frame__caption{
  display:block;
  padding:10px 0 0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mute);
}

/* ---------- 15. 图例 ---------- */
.legend{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 16px;
}
.legend-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mute);
}
.legend-dot{
  width:9px;height:9px;
  flex:none;
  background:var(--mute);
}
.legend-dot--pitch{background:var(--pitch)}
.legend-dot--signal{background:var(--signal)}
.legend-dot--live{
  background:var(--live);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(184,255,61,.16);
}
.legend-dot--line{background:var(--line)}

/* ---------- 16. 正文 ---------- */
.prose{
  max-width:68ch;
  color:var(--paper);
  font-size:16.5px;
  line-height:1.9;
}
.prose > * + *{margin-top:1em}
.prose h2{
  font-family:var(--font-display);
  font-size:clamp(22px,3vw,30px);
  font-weight:800;
  line-height:1.2;
  margin-top:1.6em;
}
.prose h3{
  font-family:var(--font-display);
  font-size:clamp(18px,2.2vw,22px);
  font-weight:800;
  line-height:1.3;
  margin-top:1.4em;
}
.prose ul,.prose ol{padding-left:1.35em;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.35em}
.prose a{
  color:var(--signal);
  text-decoration:underline;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--signal-soft)}
.prose strong{color:var(--paper);font-weight:800}
.prose code{
  font-family:var(--font-mono);
  font-size:.92em;
  padding:1px 5px;
  border:1px solid var(--line);
  color:var(--live);
}
.section--paper .prose{color:#16262d}
.section--paper .prose strong{color:#06141B}
.section--paper .prose a{color:var(--pitch-deep)}

/* ---------- 17. 动效 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .45s ease,transform .45s ease;
}
.js [data-reveal].is-in{opacity:1;transform:none}

@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(184,255,61,.18)}
  50%{opacity:.55;box-shadow:0 0 0 6px rgba(184,255,61,.06)}
}
@keyframes filterIn{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:none}
}
@keyframes navIn{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}

/* ---------- 18. 响应式 ---------- */
@media (max-width:1100px){
  .nav-link{font-size:13px}
  .nav-cta{padding:9px 14px;font-size:13px}
}

@media (max-width:940px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;
    inset:0;
    z-index:70;
    display:none;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:24px;
    padding:calc(var(--header-h) + 84px) var(--gutter) 48px;
    background:var(--ink);
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{
    display:flex;
    animation:navIn .26s ease-out both;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
    max-width:560px;
  }
  .nav-list > li{border-bottom:1px solid var(--line)}
  .nav-link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    width:100%;
    padding:14px 0;
    font-family:var(--font-display);
    font-size:clamp(20px,5vw,26px);
    font-weight:800;
    letter-spacing:.02em;
    border-bottom:0;
  }
  .nav-link:hover{border-bottom:0}
  .nav-index{font-size:12px;letter-spacing:.1em}
  .nav-cta{align-self:flex-start;padding:13px 22px;font-size:15px}

  .grid--split,.grid--split-rev,.grid--3{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:640px){
  body{font-size:15.5px}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom-inner{gap:10px 18px}
  .footer-coords{order:3;width:100%}
  .chapter{grid-template-columns:1fr;gap:8px}
  .chapter-num{font-size:34px}
  .ticker-inner{font-size:10px;gap:10px}
  .header-inner{min-height:58px}
  .brand-version{font-size:10px}
}

/* 移动菜单打开时锁滚动 */
body.nav-open{overflow:hidden}

/* ---------- 19. 减少动态 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .live-dot{animation:none}
  .js [data-reveal]{opacity:1 !important;transform:none !important}
  .site-nav[data-open="true"]{animation:none}
  [data-filter-item].is-enter{animation:none}
}

/* ---------- 20. 打印（法律页面友好） ---------- */
@media print{
  .site-header,.site-footer,.to-top,.skip-link,.filter-bar{display:none !important}
  body{background:#fff;color:#000}
  .section--paper{background:#fff;color:#000}
  .prose{max-width:none;color:#000}
}