/* ============================================================
   久赢平台 · 共享样式表 /assets/site.css
   深靛蓝台面 × 纸白页页 × 暖沙金刻度
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
[hidden]{display:none!important}

/* ---------- 2. Tokens ---------- */
:root{
  --indigo-900:#0E1A33;
  --indigo-800:#16264A;
  --indigo-600:#243E6E;
  --gold:#E0A94E;
  --gold-soft:#F2D9A0;
  --sky:#9FBECF;
  --pomegranate:#C6402F;
  --paper:#F6F1E7;
  --paper-lift:#FFFDF8;
  --ink:#17181C;
  --muted:#5F6779;
  --stone:#CBC3B4;

  --on-deep:#E4EBF6;
  --on-deep-dim:#B9C7DA;

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SFMono-Regular",ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;

  --fs-body:17px;
  --shell:1280px;
  --gutter:clamp(20px,4.2vw,68px);
  --radius:3px;
  --bar-h:74px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-paper:0 28px 64px -36px rgba(5,11,24,.6);
  --shadow-deep:0 30px 70px -34px rgba(0,0,0,.85);
  --hair:rgba(203,195,180,.5);
  --hair-deep:rgba(159,190,207,.32);
}

/* ---------- 3. Base & 中文排版 ---------- */
body{
  background:var(--indigo-900);
  color:var(--on-deep);
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:400;line-height:1.22;letter-spacing:-.005em}
h1{text-wrap:balance}
p{text-wrap:pretty}
a{color:inherit;text-decoration:none}
strong,b{font-weight:600}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:2px}
::selection{background:var(--gold);color:var(--indigo-900)}

/* ---------- 4. 布局原语 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,24px)}
.rule{height:1px;border:0;background:currentColor;opacity:.18;margin:0}

.split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.split--reverse{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.split--reverse .split__aside{order:2}
.split__aside{
  background:var(--indigo-800);color:var(--on-deep);
  padding:clamp(40px,6vw,96px) clamp(24px,4vw,64px);
}
.split__main{
  background:var(--paper);color:var(--ink);
  padding:clamp(40px,6vw,96px) clamp(24px,4vw,64px);
}

.canvas{background:var(--paper);color:var(--ink);padding:clamp(48px,7vw,120px) 0}
.canvas--deep{background:var(--indigo-900);color:var(--on-deep)}
.canvas--panel{background:var(--indigo-800);color:var(--on-deep)}
.canvas--sand{background:var(--gold-soft);color:var(--indigo-900)}
.canvas--paper-lift{background:var(--paper-lift);color:var(--ink)}

/* ---------- 5. 字体组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.18em;line-height:1.4;
  color:var(--sky);text-transform:uppercase;margin-bottom:20px;
}
.eyebrow::before{content:"";width:30px;height:1px;background:currentColor;opacity:.7}
.canvas .eyebrow{color:var(--indigo-600)}
.canvas--deep .eyebrow,.canvas--panel .eyebrow{color:var(--sky)}

.display{
  font-size:clamp(42px,7vw,96px);font-weight:200;line-height:1.03;
  letter-spacing:-.01em;margin-bottom:.35em;
}
.section-title{
  font-size:clamp(23px,2.7vw,32px);font-weight:600;line-height:1.32;
  letter-spacing:.005em;margin-bottom:.6em;
}
.lede{
  font-size:clamp(17px,1.5vw,20px);line-height:1.8;
  max-width:58ch;opacity:.9;margin-bottom:1.2em;
}

/* ---------- 6. 长文 ---------- */
.prose{max-width:64ch;font-size:var(--fs-body);line-height:1.85}
.prose > * + *{margin-top:1.2em}
.prose h2{font-size:clamp(21px,2.2vw,26px);font-weight:600;margin-top:2em}
.prose h3{font-size:18px;font-weight:600;margin-top:1.6em}
.prose a{
  text-decoration:underline;text-decoration-color:var(--gold);
  text-decoration-thickness:1px;text-underline-offset:.28em;
  transition:color .2s var(--ease);
}
.prose a:hover{color:var(--gold)}
.prose ul,.prose ol{list-style:none;padding-left:0;counter-reset:prose}
.prose li{position:relative;padding-left:1.7em;margin-top:.6em}
.prose li::before{
  content:"";position:absolute;left:0;top:.78em;
  width:9px;height:1px;background:var(--gold);
}
.prose ol li{padding-left:2.3em}
.prose ol li::before{
  counter-increment:prose;content:counter(prose,decimal-leading-zero);
  top:.15em;left:0;width:auto;height:auto;background:none;
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;color:var(--gold);
}
.prose blockquote{
  margin:1.6em 0;padding:4px 0 4px 22px;
  border-left:3px solid var(--gold);font-size:17px;opacity:.92;
}
.prose code{
  font-family:var(--font-num);font-size:.92em;
  background:rgba(203,195,180,.35);padding:2px 6px;border-radius:2px;
}
.prose img{width:100%;border-radius:var(--radius)}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid transparent;border-radius:var(--radius);
  font-size:13px;font-weight:500;letter-spacing:.08em;line-height:1.2;
  white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),
             border-color .22s var(--ease),transform .22s var(--ease);
}
.btn--gold{background:var(--gold);border-color:var(--gold);color:var(--indigo-900)}
.btn--gold:hover{background:var(--gold-soft);border-color:var(--gold-soft)}
.btn--gold:active{transform:translateY(1px)}
.btn--ghost{border-color:var(--hair-deep);color:var(--on-deep)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn--outline{border-color:var(--indigo-800);color:var(--indigo-800)}
.btn--outline:hover{background:var(--indigo-800);color:var(--paper)}
.btn--compact{padding:9px 16px;font-size:12px}

/* ---------- 8. 面包屑 ---------- */
.crumbs{margin-bottom:28px;font-size:12px;letter-spacing:.1em;color:var(--sky)}
.crumbs--on-light{color:var(--muted)}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs__item{display:inline-flex;align-items:center;gap:8px}
.crumbs__item + .crumbs__item::before{content:"／";opacity:.45}
.crumbs__link{
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.crumbs__link:hover{color:var(--gold);border-bottom-color:var(--gold)}
.crumbs__current{opacity:.72}

/* ---------- 9. 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;font-size:12px;letter-spacing:.08em;line-height:1.6;
  border:1px solid currentColor;border-radius:999px;
}
.tag--gold{color:var(--gold)}
.tag--alert{color:var(--pomegranate);background:rgba(198,64,47,.08)}
.tag--sand{background:var(--gold-soft);color:var(--indigo-900);border-color:transparent}

/* ---------- 10. 提示块 ---------- */
.note{
  border-left:3px solid var(--gold);background:rgba(242,217,160,.4);
  padding:20px 24px;margin:0 0 1.6em;
  font-size:15.5px;line-height:1.8;color:var(--ink);
}
.note__key{
  display:block;font-size:12px;letter-spacing:.16em;
  color:var(--indigo-600);margin-bottom:8px;
}
.note--deep{background:rgba(36,62,110,.55);color:var(--on-deep)}
.note--deep .note__key{color:var(--sky)}

/* ---------- 11. 专题研究板 ---------- */
.panel{
  background:var(--paper-lift);border:1px solid var(--stone);
  border-radius:var(--radius);box-shadow:var(--shadow-paper);color:var(--ink);
}
.panel__head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:14px;padding:18px 24px;border-bottom:1px solid var(--stone);
}
.panel__title{font-size:16px;font-weight:600;margin:0}
.panel__body{padding:24px}
.panel__foot{
  padding:16px 24px;border-top:1px solid var(--stone);
  font-size:13px;line-height:1.75;color:var(--muted);
}

/* ---------- 12. 图片容器 ---------- */
.figure{margin:0 0 1.8em}
.figure__frame{
  position:relative;overflow:hidden;border:1px solid var(--stone);
  border-radius:var(--radius);background:var(--indigo-600);
}
.figure__frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(135deg,rgba(224,169,78,.16),transparent 58%);
}
.figure__img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure--wide .figure__img{aspect-ratio:21/9}
.figure--tall .figure__img{aspect-ratio:4/5}
.figure--square .figure__img{aspect-ratio:1/1}
.figure__cap{
  margin-top:10px;font-size:12px;letter-spacing:.06em;line-height:1.7;
  color:var(--muted);
}
.canvas--deep .figure__cap,.canvas--panel .figure__cap,.split__aside .figure__cap{color:var(--sky)}

/* ---------- 13. 地貌抽象占位 ---------- */
.plate{position:relative;overflow:hidden;background-color:var(--indigo-900);isolation:isolate}
.plate::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(120% 90% at 82% 112%,rgba(224,169,78,.42),transparent 62%),
    radial-gradient(90% 70% at 12% 8%,rgba(36,62,110,.92),transparent 70%),
    linear-gradient(180deg,#16264A,#0E1A33);
}
.plate::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:62%;
  background:linear-gradient(180deg,rgba(159,190,207,0),rgba(159,190,207,.22));
  clip-path:polygon(0 72%,12% 46%,25% 62%,38% 24%,52% 54%,66% 33%,80% 60%,92% 42%,100% 58%,100% 100%,0 100%);
}
.plate__grid{
  position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(0deg,rgba(159,190,207,.12) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(90deg,rgba(159,190,207,.12) 0 1px,transparent 1px 34px);
}
.plate__label{
  position:absolute;left:18px;bottom:16px;z-index:2;
  font-size:11px;letter-spacing:.18em;color:var(--gold-soft);
}

/* ---------- 14. 框景 ---------- */
.framed{
  position:relative;border:1px solid var(--hair-deep);
  padding:clamp(28px,5vw,72px);
}
.canvas .framed,.split__main .framed{border-color:var(--hair)}
.framed::before{
  content:"";position:absolute;inset:9px;pointer-events:none;opacity:.9;
  background-image:
    linear-gradient(var(--gold),var(--gold)),linear-gradient(var(--gold),var(--gold)),
    linear-gradient(var(--gold),var(--gold)),linear-gradient(var(--gold),var(--gold)),
    linear-gradient(var(--gold),var(--gold)),linear-gradient(var(--gold),var(--gold)),
    linear-gradient(var(--gold),var(--gold)),linear-gradient(var(--gold),var(--gold));
  background-repeat:no-repeat;
  background-size:20px 2px,2px 20px,20px 2px,2px 20px,20px 2px,2px 20px,20px 2px,2px 20px;
  background-position:left top,left top,right top,right top,left bottom,left bottom,right bottom,right bottom;
}

/* ---------- 15. 分段切换 ---------- */
.segmented{display:block}
.segmented__bar{
  display:flex;flex-wrap:wrap;gap:4px;
  border-bottom:1px solid var(--stone);margin-bottom:28px;
}
.segmented__tab{
  appearance:none;background:none;border:0;border-bottom:2px solid transparent;
  padding:12px 18px;font-size:14px;letter-spacing:.06em;color:var(--muted);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.segmented__tab:hover{color:var(--indigo-800)}
.segmented__tab[aria-selected="true"]{
  color:var(--indigo-900);border-bottom-color:var(--gold);font-weight:600;
}
.segmented__panels{transition:opacity .25s var(--ease)}
.segmented__panel:focus-visible{outline:2px solid var(--gold);outline-offset:6px}
.segmented--deep .segmented__bar{border-bottom-color:var(--hair-deep)}
.segmented--deep .segmented__tab{color:var(--sky)}
.segmented--deep .segmented__tab:hover{color:#FFFFFF}
.segmented--deep .segmented__tab[aria-selected="true"]{
  color:var(--gold);border-bottom-color:var(--gold);
}

/* ---------- 16. 数据 ---------- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat__num{
  font-family:var(--font-num);font-size:clamp(40px,5.2vw,84px);
  font-weight:300;line-height:1;color:var(--gold);
  font-variant-numeric:tabular-nums;
}
.stat__label{font-size:12px;letter-spacing:.16em;color:var(--sky)}
.canvas .stat__label{color:var(--muted)}
.canvas--deep .stat__label,.canvas--panel .stat__label{color:var(--sky)}

/* ============================================================
   17. 头部命令栏
   ============================================================ */
.skip-link{
  position:absolute;left:var(--gutter);top:-120px;z-index:300;
  background:var(--gold);color:var(--indigo-900);
  padding:12px 20px;font-size:14px;letter-spacing:.06em;
  border-radius:var(--radius);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}

.cmd-bar{
  position:sticky;top:0;z-index:80;
  background:var(--indigo-800);color:var(--on-deep);
  border-bottom:1px solid var(--hair-deep);
  transition:box-shadow .3s var(--ease);
}
.cmd-bar.is-condensed{box-shadow:var(--shadow-deep)}

.cmd-bar__grain{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(90deg,rgba(224,169,78,.14) 0 1px,transparent 1px);
  background-size:96px 100%;
}
.cmd-bar__inner{
  position:relative;z-index:2;
  max-width:var(--shell);margin-inline:auto;padding:0 var(--gutter);
  min-height:var(--bar-h);display:flex;align-items:center;
  gap:clamp(14px,2.4vw,40px);
  transition:min-height .3s var(--ease);
}
.cmd-bar.is-condensed .cmd-bar__inner{min-height:58px}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:13px;flex:0 0 auto}
.brand__mark{display:grid;gap:3px;width:26px;flex:0 0 auto}
.brand__mark i{
  display:block;height:2px;background:var(--gold);border-radius:1px;
  transition:width .25s var(--ease);
}
.brand__mark i:nth-child(1){width:26px}
.brand__mark i:nth-child(2){width:19px}
.brand__mark i:nth-child(3){width:12px;background:var(--sky)}
.brand:hover .brand__mark i:nth-child(2),
.brand:hover .brand__mark i:nth-child(3){width:26px}
.brand__words{display:flex;flex-direction:column;line-height:1.25}
.brand__name{font-size:17px;font-weight:600;letter-spacing:.1em}
.brand__tag{font-size:11px;letter-spacing:.14em;color:var(--sky)}

/* 导航 */
.site-nav{
  display:flex;align-items:center;
  gap:clamp(16px,3vw,48px);
  flex:1 1 auto;min-width:0;
}
.site-nav__list{display:flex;align-items:center;gap:clamp(4px,1.2vw,20px);flex-wrap:nowrap}
.site-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:7px;
  padding:9px 2px;font-size:13px;letter-spacing:.06em;
  color:var(--on-deep-dim);white-space:nowrap;
  transition:color .2s var(--ease);
}
.site-nav__num{
  font-family:var(--font-num);font-size:10px;letter-spacing:.1em;
  color:var(--sky);opacity:.75;
}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:2px;height:2px;
  background:var(--gold);
  transition:right .26s var(--ease);
}
.site-nav__link:hover{color:#FFFFFF}
.site-nav__link:hover::after{right:0}
.site-nav__link[aria-current="page"]{color:var(--gold)}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--gold);opacity:1}
.site-nav__link[aria-current="page"]::after{right:0;background:var(--gold)}

.site-nav__actions{display:flex;align-items:center;gap:10px;margin-left:auto}

/* 检索键 */
.index-key{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 15px;border:1px solid var(--hair-deep);border-radius:var(--radius);
  color:var(--on-deep-dim);font-size:12px;letter-spacing:.1em;white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.index-key:hover{border-color:var(--gold);color:var(--gold)}
.index-key[aria-expanded="true"]{
  background:var(--gold);border-color:var(--gold);color:var(--indigo-900);
}
.index-key__glyph{
  position:relative;width:12px;height:12px;flex:0 0 auto;
  border:1.5px solid currentColor;border-radius:50%;
}
.index-key__glyph::after{
  content:"";position:absolute;right:-4px;bottom:-3px;
  width:6px;height:1.5px;background:currentColor;
  transform:rotate(45deg);transform-origin:left center;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:9px 15px;border:1px solid var(--hair-deep);border-radius:var(--radius);
  color:var(--on-deep-dim);font-size:12px;letter-spacing:.1em;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold)}
.nav-toggle__bars{display:grid;gap:4px;width:18px;flex:0 0 auto}
.nav-toggle__bars i{
  display:block;height:1.5px;background:currentColor;border-radius:1px;
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--gold);color:var(--gold)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* 站内检索索引面板 */
.index-panel{
  position:absolute;left:0;right:0;top:100%;z-index:3;
  background:var(--indigo-900);
  border-top:1px solid rgba(224,169,78,.45);
  border-bottom:1px solid var(--hair-deep);
  box-shadow:var(--shadow-deep);
  animation:panelDrop .28s var(--ease) both;
}
@keyframes panelDrop{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:none}
}
.index-panel__inner{max-width:var(--shell);margin-inline:auto;padding:26px var(--gutter) 32px}
.index-panel__label{display:block;font-size:12px;letter-spacing:.14em;color:var(--sky);margin-bottom:10px}
.index-panel__input{
  width:100%;padding:14px 16px;border-radius:var(--radius);
  background:rgba(246,241,231,.06);border:1px solid var(--hair-deep);
  color:#F1F5FB;font-size:15px;letter-spacing:.02em;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.index-panel__input::placeholder{color:rgba(159,190,207,.65)}
.index-panel__input:focus{outline:none;border-color:var(--gold);background:rgba(224,169,78,.1)}
.index-panel__list{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));
  gap:2px;margin-top:20px;
}
.index-panel__row{margin:0}
.index-panel__link{
  display:flex;align-items:baseline;gap:10px;
  padding:12px 14px;border-radius:var(--radius);
  font-size:14px;color:#D5E0EE;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.index-panel__link:hover{background:rgba(224,169,78,.14);color:var(--gold)}
.index-panel__num{font-family:var(--font-num);font-size:11px;letter-spacing:.1em;color:var(--sky)}
.index-panel__name{font-weight:500}
.index-panel__hint{margin-left:auto;text-align:right;font-size:12px;letter-spacing:.04em;color:var(--sky)}
.index-panel__empty{margin-top:18px;font-size:14px;color:var(--sky)}
.index-panel__empty a{color:var(--gold);text-decoration:underline;text-underline-offset:.25em}

/* 阅读进度 */
.cmd-bar__progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none;z-index:4}
.cmd-bar__progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--gold),var(--gold-soft));
  transition:width .12s linear;
}

/* ============================================================
   18. 页脚
   ============================================================ */
.site-foot{
  position:relative;background:var(--indigo-900);color:var(--on-deep-dim);
  border-top:1px solid var(--hair-deep);
}
.site-foot__ruler{
  height:20px;
  background-image:repeating-linear-gradient(90deg,rgba(159,190,207,.45) 0 1px,transparent 1px 30px);
  background-size:100% 9px;
  background-repeat:no-repeat;
  background-position:0 0;
}
.site-foot__inner{
  max-width:var(--shell);margin-inline:auto;
  padding:clamp(40px,5vw,72px) var(--gutter) 34px;
}
.site-foot__grid{
  display:grid;
  grid-template-columns:minmax(260px,1.5fr) repeat(3,minmax(110px,.55fr));
  gap:clamp(26px,4vw,56px);
}
.site-foot__mast{min-width:0}
.site-foot__brand{font-size:22px;font-weight:600;letter-spacing:.14em;color:var(--paper);margin-bottom:6px}
.site-foot__tag{font-size:12px;letter-spacing:.16em;color:var(--sky);margin-bottom:18px}
.site-foot__summary{font-size:14.5px;line-height:1.9;max-width:38ch;color:var(--on-deep-dim)}
.site-foot__col{min-width:0}
.site-foot__col-title{font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--gold);margin-bottom:16px}
.site-foot__links{display:flex;flex-direction:column;gap:10px}
.site-foot__link{
  font-size:14px;color:var(--on-deep-dim);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.site-foot__link:hover{color:var(--gold);border-bottom-color:var(--gold)}

.site-foot__contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:18px 32px;margin-top:clamp(34px,4vw,58px);
  padding-top:28px;border-top:1px solid rgba(159,190,207,.22);
}
.site-foot__item{display:flex;flex-direction:column;gap:5px}
.site-foot__item-key{font-size:11px;letter-spacing:.18em;color:var(--sky)}
.site-foot__item-val{font-size:14.5px;line-height:1.75;color:var(--paper)}

.site-foot__legal{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  gap:10px 24px;margin-top:clamp(30px,4vw,52px);
  padding-top:22px;border-top:1px solid rgba(159,190,207,.22);
  font-size:12px;letter-spacing:.08em;color:var(--sky);
}
.site-foot__legal-line{margin:0}

/* ============================================================
   19. 响应式
   ============================================================ */
@media (min-width:1220px) and (max-width:1439px){
  .site-nav__actions .btn--ghost{display:none}
}

@media (max-width:1219px){
  .cmd-bar__inner{flex-wrap:wrap;padding-block:10px;min-height:0}
  .cmd-bar.is-condensed .cmd-bar__inner{min-height:0}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;
    flex-basis:100%;flex-direction:column;align-items:stretch;gap:0;
    margin:12px 0 0;padding:6px 0 18px;
    border-top:1px solid rgba(159,190,207,.22);
  }
  .site-nav[data-open]{display:flex;animation:panelDrop .26s var(--ease) both}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{
    padding:14px 2px;font-size:15px;
    border-bottom:1px solid rgba(159,190,207,.14);
  }
  .site-nav__link::after{display:none}
  .site-nav__num{font-size:11px;min-width:2.2em}
  .site-nav__link[aria-current="page"]{color:var(--gold)}
  .site-nav__actions{flex-direction:column;align-items:stretch;margin:20px 0 0;gap:10px}
  .site-nav__actions .btn,
  .site-nav__actions .index-key{justify-content:center;width:100%}
}

@media (max-width:900px){
  .split,.split--reverse{grid-template-columns:minmax(0,1fr)}
  .split--reverse .split__aside{order:0}
}

@media (max-width:820px){
  .site-foot__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px}
  .site-foot__mast{grid-column:1 / -1}
}

@media (max-width:560px){
  :root{--fs-body:16px}
  .brand__tag{display:none}
  .brand__name{font-size:16px}
  .nav-toggle__text{display:none}
  .nav-toggle{padding:10px 12px}
  .index-panel__inner{padding:22px var(--gutter) 26px}
  .index-panel__link{flex-wrap:wrap}
  .index-panel__hint{margin-left:0;width:100%;text-align:left;padding-left:26px}
}

@media (max-width:460px){
  .site-foot__grid{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 20. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .cmd-bar__progress span{transition:none}
}