/* ============================================================
   竞技联盟德州 · /assets/site.css
   深墨绿长卷 / 档案化组件 / 双强调色 / 双层信息导航
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B1F1A;
  --coal:#12151A;
  --card:#143229;
  --line:#1E3A38;
  --gold:#E4B33C;
  --gold-soft:#F6DFA0;
  --cyan:#35E0D0;
  --blue:#4C8DFF;
  --orange:#FF7A3D;
  --paper:#F2F5F1;
  --muted:#8FA39B;

  --shell-w:1200px;
  --gutter:clamp(16px,4vw,32px);
  --masthead-h:56px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:2px;

  --font-display:'Archivo','Inter Tight','Noto Sans SC',sans-serif;
  --font-body:'Inter','Noto Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ---------- 3. 基础与中文排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(0deg,rgba(53,224,208,.035) 0 1px,transparent 1px 96px),
    repeating-linear-gradient(90deg,rgba(53,224,208,.035) 0 1px,transparent 1px 96px);
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media (max-width:760px){body{font-size:16px}}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.18;
  letter-spacing:.06em;
  color:var(--paper);
  text-wrap:balance;
}
h1{font-size:clamp(1.9rem,5.4vw,4.4rem);letter-spacing:.08em}
h2{font-size:clamp(1.5rem,3.4vw,2.5rem)}
h3{font-size:clamp(1.12rem,2.1vw,1.5rem);letter-spacing:.05em}
h4{font-size:clamp(1rem,1.6vw,1.15rem)}

p{max-width:68ch}
strong{color:var(--gold-soft);font-weight:700}
code{font-family:var(--font-mono);font-size:.92em;color:var(--cyan);background:rgba(53,224,208,.1);padding:1px 5px}

.shell{width:100%;max-width:var(--shell-w);margin-inline:auto;padding-inline:var(--gutter)}
#main-content{display:block;scroll-margin-top:104px}

.mono{font-family:var(--font-mono);font-weight:600;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.text-muted{color:var(--muted)}
.text-gold{color:var(--gold)}
.text-cyan{color:var(--cyan)}
.is-hidden{display:none!important}
.is-fading{opacity:0}

.divider{height:1px;background:var(--line);margin-block:clamp(24px,4vw,48px)}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:var(--gutter);top:-64px;z-index:220;
  background:var(--gold);color:#0B1F1A;
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.08em;
  padding:12px 18px;border-radius:var(--radius);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:10px}

/* ---------- 5. 头部：双层信息导航 ---------- */
.site-header{
  position:sticky;top:calc(-1 * var(--masthead-h));
  z-index:120;
  background:var(--ink);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 44px -36px rgba(0,0,0,.95);
}

/* 上：品牌条 */
.masthead{
  height:var(--masthead-h);
  background:linear-gradient(90deg,var(--coal),var(--ink) 58%);
  border-bottom:1px solid var(--line);
}
.masthead__inner{
  height:100%;
  display:flex;align-items:center;gap:clamp(10px,2.4vw,26px);
  min-width:0;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 1 auto;min-width:0}
.brand__mark{
  flex:0 0 auto;width:36px;height:36px;display:grid;place-items:center;
  border:1px solid var(--gold);color:var(--gold);
  font-family:var(--font-mono);font-weight:700;font-size:13px;letter-spacing:.06em;
  background:rgba(228,179,60,.08);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand__name{
  font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.12em;
  color:var(--paper);white-space:nowrap;
}
.brand__line{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--muted);
  white-space:nowrap;
}
.masthead__meta{
  margin-left:auto;display:flex;align-items:center;gap:12px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted);
  max-width:none;white-space:nowrap;overflow:hidden;
}
.masthead__lang{color:var(--cyan);border:1px solid rgba(53,224,208,.4);padding:2px 7px}
.masthead__icp{color:var(--muted)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  border:1px solid var(--line);color:var(--paper);
  font-family:var(--font-display);font-weight:700;font-size:12.5px;letter-spacing:.12em;
  padding:8px 12px;border-radius:var(--radius);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:var(--gold);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* 下：栏目条 */
.navbar{
  background:var(--ink);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.navbar__inner{
  display:flex;align-items:center;gap:clamp(10px,2vw,24px);
  min-height:64px;padding-block:9px;
  transition:min-height .28s var(--ease),padding .28s var(--ease);
}
.site-header[data-shrink] .navbar{
  background:rgba(11,31,26,.94);
  box-shadow:inset 0 -1px 0 var(--line);
}
.site-header[data-shrink] .navbar__inner{min-height:52px;padding-block:5px}

.site-nav{order:1;flex:1 1 auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-list li{flex:0 0 auto}
.nav-list a{
  display:inline-block;padding:9px 14px;border:1px solid transparent;border-radius:var(--radius);
  font-family:var(--font-display);font-weight:700;font-size:14.5px;letter-spacing:.08em;
  color:var(--paper);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.nav-list a:hover{background:var(--card);color:var(--gold-soft);border-color:var(--line)}
.nav-list a[aria-current="page"]{
  color:var(--gold);
  background:rgba(228,179,60,.09);
  border-color:rgba(228,179,60,.5);
  box-shadow:inset 0 -2px 0 var(--gold);
}
.navbar__cta{order:2;display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none;
}
.scroll-progress span{
  display:block;height:2px;width:0;
  background:linear-gradient(90deg,var(--gold),var(--cyan));
  transition:width .1s linear;
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-display);font-weight:700;font-size:14px;line-height:1;
  letter-spacing:.09em;
  padding:12px 18px;border:1px solid var(--line);border-radius:var(--radius);
  background:transparent;color:var(--paper);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--gold{border-color:var(--gold);color:var(--gold)}
.btn--gold:hover{background:var(--gold);color:#0B1F1A}
.btn--ghost{border-color:var(--line);color:var(--muted)}
.btn--ghost:hover{color:var(--gold-soft);border-color:var(--gold-soft);background:rgba(242,245,241,.04)}
.btn--solid{background:var(--gold);border-color:var(--gold);color:#0B1F1A}
.btn--solid:hover{background:var(--gold-soft);border-color:var(--gold-soft)}
.btn--cyan{border-color:var(--cyan);color:var(--cyan)}
.btn--cyan:hover{background:var(--cyan);color:#0B1F1A}
.btn--warn{border-color:var(--orange);color:var(--orange)}
.btn--warn:hover{background:var(--orange);color:#12151A}
.btn--sm{padding:9px 13px;font-size:13px;letter-spacing:.08em}
.btn--block{width:100%}

/* ---------- 7. 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;
  padding:4px 8px;border:1px solid var(--line);color:var(--muted);
  background:rgba(242,245,241,.02);
}
.tag--gold{color:var(--gold);border-color:rgba(228,179,60,.45);background:rgba(228,179,60,.08)}
.tag--cyan{color:var(--cyan);border-color:rgba(53,224,208,.42);background:rgba(53,224,208,.07)}
.tag--blue{color:var(--blue);border-color:rgba(76,141,255,.45);background:rgba(76,141,255,.08)}
.tag--orange{color:var(--orange);border-color:rgba(255,122,61,.5);background:rgba(255,122,61,.09)}

/* ---------- 8. 章节 / 色带 / 引导 ---------- */
.section{position:relative;padding:clamp(36px,6vw,84px) 0;border-top:1px solid var(--line)}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px 28px;
  margin-bottom:clamp(20px,3vw,36px);
}
.section__head p{max-width:54ch;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.2em;
  color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--cyan);display:block}
.lead{
  font-family:var(--font-body);font-size:clamp(1.02rem,1.8vw,1.22rem);
  line-height:1.7;color:var(--gold-soft);max-width:60ch;
}
.band{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(20,50,41,.6),transparent 72%);
  padding:14px clamp(14px,2vw,22px);
  margin-block:clamp(24px,4vw,48px);
}
.band__num{
  font-family:var(--font-mono);font-weight:700;letter-spacing:.04em;
  font-size:clamp(20px,3vw,30px);color:var(--gold);
}
.band__label{
  font-family:var(--font-display);font-weight:700;font-size:13px;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;
}

/* ---------- 9. 档案卡 / 数据条 ---------- */
.dossier{
  position:relative;background:var(--card);border:1px solid var(--line);
  padding:clamp(16px,2.4vw,24px);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.dossier::after{
  content:'';position:absolute;inset:6px;pointer-events:none;
  border:1px dashed rgba(143,163,155,.16);
}
.dossier:hover{
  transform:translateY(-4px);
  border-color:rgba(228,179,60,.5);
  box-shadow:0 26px 46px -32px rgba(0,0,0,.95);
}
.dossier__head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;margin-bottom:14px;
}
.dossier__index{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.dossier__title{
  font-family:var(--font-display);font-weight:800;letter-spacing:.05em;
  font-size:clamp(1.05rem,1.8vw,1.3rem);margin-bottom:10px;
}
.dossier__body{font-size:15.5px;color:var(--paper);opacity:.92}
.dossier__body p{max-width:none}
.dossier__foot{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
}

.stat{
  display:flex;flex-direction:column;gap:4px;
  padding:14px 16px;background:rgba(20,50,41,.5);
  border:1px solid var(--line);border-left:2px solid var(--cyan);
}
.stat__val{
  font-family:var(--font-mono);font-weight:700;line-height:1.1;
  font-size:clamp(1.4rem,2.6vw,2rem);color:var(--cyan);
  font-variant-numeric:tabular-nums;
}
.stat__label{font-size:13px;letter-spacing:.06em;color:var(--muted)}

/* ---------- 10. 横向档案流 ---------- */
.rail{position:relative;margin-block:clamp(20px,3vw,36px)}
.rail__head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px;margin-bottom:14px;
}
.rail__title{
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.14em;
  color:var(--gold);text-transform:uppercase;
}
.rail__nav{display:flex;gap:8px}
.rail__btn{
  width:40px;height:34px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--gold);
  font-family:var(--font-mono);font-size:15px;line-height:1;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.rail__btn:hover{background:var(--card);border-color:var(--gold)}
.rail__track{
  display:flex;gap:16px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 16px;
  scrollbar-width:thin;scrollbar-color:var(--line) transparent;
  -webkit-overflow-scrolling:touch;
}
.rail__track>*{flex:0 0 clamp(230px,62vw,300px);scroll-snap-align:start}
.rail__track::-webkit-scrollbar{height:6px}
.rail__track::-webkit-scrollbar-thumb{background:var(--line)}

/* ---------- 11. 筛选带 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.filter-btn{
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.1em;
  padding:8px 13px;border:1px solid var(--line);color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.filter-btn:hover{color:var(--paper);border-color:var(--gold-soft)}
.filter-btn[aria-pressed="true"],.filter-btn.is-active{
  background:var(--gold);border-color:var(--gold);color:#0B1F1A;
}
.filter-count{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--cyan)}
[data-filter-item]{transition:opacity .2s var(--ease),transform .24s var(--ease),border-color .24s var(--ease)}

/* ---------- 12. 折叠条文 ---------- */
.fold{border-bottom:1px solid var(--line)}
.fold__head{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
  padding:16px 0;text-align:left;
  font-family:var(--font-display);font-weight:700;font-size:15.5px;letter-spacing:.04em;
  color:var(--paper);
  transition:color .2s var(--ease);
}
.fold__head:hover{color:var(--gold-soft)}
.fold__icon{
  flex:0 0 auto;width:22px;height:22px;margin-top:2px;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--gold);
  font-family:var(--font-mono);font-size:14px;line-height:1;
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.fold[data-open] .fold__icon{transform:rotate(45deg);border-color:var(--gold)}
.fold__body{height:0;overflow:hidden;opacity:0;transition:height .24s var(--ease),opacity .2s var(--ease)}
.fold[data-open] .fold__body{opacity:1}
.fold__body-inner{padding-bottom:18px}
.fold__body-inner p{max-width:70ch;color:var(--paper);opacity:.92}

/* ---------- 13. 条文列表 ---------- */
.rule-list{display:flex;flex-direction:column}
.rule-list__item{
  display:grid;grid-template-columns:auto 1fr;gap:14px;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.rule-list__num{
  font-family:var(--font-mono);font-weight:600;font-size:13px;letter-spacing:.04em;
  color:var(--gold);padding-top:3px;
}
.rule-list__text{font-size:15.5px;max-width:70ch}

/* ---------- 14. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--mosaic{grid-template-columns:repeat(6,minmax(0,1fr));align-items:start}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}

@media (max-width:1000px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--mosaic{grid-template-columns:repeat(4,minmax(0,1fr))}
  .span-3,.span-4,.span-6{grid-column:span 4}
  .span-2{grid-column:span 2}
}
@media (max-width:640px){
  .grid--2,.grid--3,.grid--4,.grid--mosaic{grid-template-columns:minmax(0,1fr)}
  .span-2,.span-3,.span-4,.span-6{grid-column:span 1}
}

/* ---------- 15. 图片容器（页面阶段放图占位） ---------- */
.img-frame{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);
  background-color:var(--coal);
  background-image:
    radial-gradient(120% 90% at 18% 0%,rgba(53,224,208,.14),transparent 62%),
    repeating-linear-gradient(0deg,rgba(53,224,208,.07) 0 1px,transparent 1px 22px),
    repeating-linear-gradient(90deg,rgba(53,224,208,.07) 0 1px,transparent 1px 22px);
  aspect-ratio:16/9;
}
.img-frame>img{width:100%;height:100%;object-fit:cover;filter:saturate(.94) contrast(1.04)}
.img-frame::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.16) 0 1px,transparent 1px 3px);
  opacity:.28;
}
.img-frame__tag{
  position:absolute;left:10px;bottom:10px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  padding:4px 8px;background:rgba(11,31,26,.86);color:var(--gold);
  border:1px solid rgba(228,179,60,.45);
}
.img-frame__cap{
  position:absolute;right:10px;top:10px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--cyan);
  padding:4px 8px;background:rgba(11,31,26,.82);
}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--ultra{aspect-ratio:21/9}
.img-frame--square{aspect-ratio:1/1}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--tone-gold{
  background-image:
    radial-gradient(120% 90% at 18% 0%,rgba(228,179,60,.16),transparent 62%),
    repeating-linear-gradient(0deg,rgba(228,179,60,.07) 0 1px,transparent 1px 22px),
    repeating-linear-gradient(90deg,rgba(228,179,60,.07) 0 1px,transparent 1px 22px);
}
.img-frame--tone-blue{
  background-image:
    radial-gradient(120% 90% at 18% 0%,rgba(76,141,255,.16),transparent 62%),
    repeating-linear-gradient(0deg,rgba(76,141,255,.07) 0 1px,transparent 1px 22px),
    repeating-linear-gradient(90deg,rgba(76,141,255,.07) 0 1px,transparent 1px 22px);
}

/* ---------- 16. 正文 / 面包屑 ---------- */
.prose{max-width:68ch;font-size:clamp(15.5px,1.7vw,17.5px)}
.prose p{max-width:none;margin-bottom:1.1em}
.prose h2{margin:1.6em 0 .55em;font-size:clamp(1.3rem,2.4vw,1.8rem)}
.prose h3{margin:1.4em 0 .5em;color:var(--gold-soft)}
.prose ul,.prose ol{display:flex;flex-direction:column;gap:.5em;margin:0 0 1.2em;padding-left:1.2em}
.prose ul li{position:relative;padding-left:1em}
.prose ul li::before{content:'';position:absolute;left:0;top:.78em;width:7px;height:1px;background:var(--gold)}
.prose ol{list-style:decimal;padding-left:1.6em}
.prose ol li::marker{color:var(--gold);font-family:var(--font-mono)}
.prose a{border-bottom:1px solid rgba(228,179,60,.5);color:var(--gold-soft)}
.prose a:hover{color:var(--gold);border-bottom-color:var(--gold)}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
  margin-bottom:18px;
}
.breadcrumbs li{display:flex;align-items:center;gap:10px}
.breadcrumbs li+li::before{content:'/';color:var(--line)}
.breadcrumbs a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumbs a:hover{color:var(--gold)}
.breadcrumbs [aria-current="page"]{color:var(--paper)}

/* ---------- 17. 显现 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 18. 页脚 ---------- */
.site-footer{position:relative;background:var(--coal);border-top:1px solid var(--line);margin-top:0}
.footer__grid{
  display:grid;
  grid-template-columns:minmax(230px,1.3fr) repeat(4,minmax(0,1fr));
  gap:clamp(20px,3vw,36px);
  padding-block:clamp(32px,5vw,58px);
}
.footer__brand{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.brand--footer .brand__mark{width:42px;height:42px;font-size:14px}
.footer__note{font-size:14.5px;color:var(--muted);max-width:36ch}
.footer__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--cyan)}
.footer__col{min-width:0}
.footer__col-title{
  font-family:var(--font-display);font-weight:800;font-size:12.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gold);
  padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid var(--line);
}
.footer__list{display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.footer__list li{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}
.footer__list a{color:var(--paper);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.footer__list a:hover{color:var(--gold);border-bottom-color:var(--gold)}
.footer__k{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);min-width:4.6em}

/* 底部第二栏常驻卡片 */
.persist{
  position:sticky;bottom:0;z-index:6;
  padding:12px 0 18px;
  background:linear-gradient(180deg,rgba(18,21,26,0) 0%,rgba(18,21,26,.92) 55%,var(--coal) 100%);
}
.persist__card{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 18px;
  background:linear-gradient(100deg,rgba(20,50,41,.98),rgba(18,21,26,.98));
  border:1px solid var(--line);border-left:3px solid var(--gold);
  box-shadow:0 -16px 34px -26px rgba(0,0,0,.95);
}
.persist__text{display:flex;flex-direction:column;gap:4px;min-width:0}
.persist__title{font-family:var(--font-display);font-weight:800;font-size:15px;letter-spacing:.08em;color:var(--gold-soft)}
.persist__hint{font-size:13.5px;max-width:48ch}
.persist__actions{display:flex;flex-wrap:wrap;gap:10px}

.footer__legal{border-top:1px solid var(--line);background:rgba(11,31,26,.7)}
.footer__legal-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 28px;padding-block:18px;
}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px}
.footer__legal-links a{color:var(--muted);transition:color .2s var(--ease)}
.footer__legal-links a:hover{color:var(--gold)}
.footer__legal-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12.5px;color:var(--muted);max-width:none}

/* 返回顶部 */
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:130;
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 12px;
  background:var(--card);color:var(--gold);border:1px solid var(--gold);
  font-family:var(--font-display);font-weight:700;font-size:12px;letter-spacing:.1em;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
}
.to-top[data-show]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--gold);color:#0B1F1A}

/* ---------- 19. 响应式：平板 ---------- */
@media (max-width:1080px){
  .footer__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer__brand{grid-column:span 3}
}

/* ---------- 20. 响应式：移动导航 ---------- */
@media (max-width:900px){
  .masthead__meta{margin-left:auto;gap:8px}
  .nav-toggle{display:inline-flex;margin-left:0}
  .navbar__inner{flex-wrap:wrap;gap:10px;padding-block:9px}
  .site-nav{order:2;width:100%;min-width:0}
  .site-nav .nav-list{
    display:none;
    flex-wrap:nowrap;gap:8px;
    overflow-x:auto;padding-bottom:6px;
    scrollbar-width:thin;scrollbar-color:var(--line) transparent;
    -webkit-overflow-scrolling:touch;
  }
  .site-nav[data-open] .nav-list{display:flex}
  .site-nav .nav-list::-webkit-scrollbar{height:5px}
  .site-nav .nav-list::-webkit-scrollbar-thumb{background:var(--line)}
  .navbar__cta{order:1;margin-left:auto}
  .navbar__cta .btn--ghost{display:none}
}

/* ---------- 21. 响应式：手机 ---------- */
@media (max-width:760px){
  .masthead__icp{display:none}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .footer__brand{grid-column:span 2}
  .persist{bottom:12px;padding:10px 0 14px}
  .persist__card{flex-direction:column;align-items:flex-start;gap:12px}
  .persist__actions{width:100%}
  .persist__actions .btn{flex:1 1 auto}
  .footer__legal-inner{flex-direction:column;align-items:flex-start}
  .to-top{right:12px;bottom:14px}
}
@media (max-width:480px){
  .brand__line{display:none}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__brand{grid-column:span 1}
  .nav-list a{padding:8px 11px;font-size:13.5px}
}

/* ---------- 22. 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;
  }
  .reveal{opacity:1;transform:none}
  .btn:hover{transform:none}
  .dossier:hover{transform:none}
  .scroll-progress span{transition:none}
}