/* ==========================================================================
   半岛体育 · Site Kit 共享样式  /assets/site.css
   骨架：命令栏 + 蓝图网格 + 6° 斜切 + 切角面板 + 网格索引页脚
   ========================================================================== */

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

/* --- 2. 设计令牌 --------------------------------------------------------- */
:root{
  --navy:#0B1B33;
  --navy-2:#123C6B;
  --blue:#1E6FD9;
  --orange:#FF6A13;
  --orange-soft:#FFB877;
  --cyan:#16C2A6;
  --mist:#F2F6FB;
  --ink:#1C2430;
  --gray:#5A6B80;
  --white:#FFFFFF;

  --line:rgba(30,111,217,.26);
  --line-soft:rgba(11,27,51,.10);
  --line-inv:rgba(255,255,255,.14);

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

  --shell:1240px;
  --pad:clamp(18px,4vw,32px);
  --gap:clamp(18px,2.4vw,28px);

  --cut:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
  --cut-sm:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);

  --ease:cubic-bezier(.22,.61,.36,1);
  --h-bar:64px;
}

/* --- 3. 基础排版 --------------------------------------------------------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--mist);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.t-display{font-size:clamp(2.2rem,6vw,3.5rem);font-weight:900;line-height:1.06;letter-spacing:-.02em}
.t-title{font-size:clamp(1.7rem,4vw,2.5rem);font-weight:900;line-height:1.15;letter-spacing:-.02em}
.t-sub{font-size:clamp(1.25rem,2.6vw,1.75rem);font-weight:800;line-height:1.3;letter-spacing:-.01em}
.t-mini{font-size:1.375rem;font-weight:800;line-height:1.4}
.t-note{font-size:13px;line-height:1.7;color:var(--gray)}
.t-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.chapter-num{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.2em;color:var(--blue)}
.v-note{
  writing-mode:vertical-rl;
  font-size:12px;letter-spacing:.28em;
  color:var(--gray);
  font-family:var(--font-mono);
}
.rule{display:block;height:1px;width:100%;background:var(--line-soft);border:0}

/* --- 4. 布局骨架 --------------------------------------------------------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}
.sec{position:relative;padding-block:clamp(48px,7vw,96px)}
.sec--tight{padding-block:clamp(28px,4vw,56px)}
.sec--paper{background:var(--white)}
.sec--mist{background:var(--mist)}
.sec--navy{background:var(--navy);color:var(--white)}
.sec--navy .t-note,.sec--navy .v-note{color:rgba(255,255,255,.62)}

.bp-grid{position:relative;isolation:isolate}
.bp-grid::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right,var(--line-soft) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line-soft) 1px,transparent 1px);
  background-size:88px 88px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 82%);
}
.bp-grid--dark::before{
  background-image:
    linear-gradient(to right,rgba(255,255,255,.08) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.06) 1px,transparent 1px);
}
.bp-grid > *{position:relative;z-index:1}

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

.rail-note{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--gray);
}
.rail-note__item{display:flex;align-items:center;gap:8px}
.rail-note__item::before{content:"";width:14px;height:1px;background:currentColor;opacity:.55}
.rail-note__item.is-active{color:var(--orange)}

/* --- 5. 切角 / 斜切 / 卡片 ---------------------------------------------- */
.cut{clip-path:var(--cut)}
.cut--sm{clip-path:var(--cut-sm)}

.diag-band{
  position:relative;height:clamp(48px,7vw,96px);
  overflow:hidden;background:transparent;
}
.diag-band::before{
  content:"";position:absolute;left:-6%;right:-6%;top:0;bottom:0;
  background:linear-gradient(96deg,var(--navy),var(--navy-2) 52%,var(--blue));
  transform:skewY(-6deg);transform-origin:left center;
}
.diag-band--warm::before{background:linear-gradient(96deg,var(--navy-2),var(--blue) 48%,var(--orange-soft))}

.card{
  background:var(--white);
  border:1px solid var(--line-soft);
  padding:clamp(20px,2.4vw,28px);
  box-shadow:0 24px 48px -40px rgba(11,27,51,.75);
}
.card--dark{background:var(--navy);border-color:var(--line-inv);color:var(--white)}
.card--dark .t-note{color:rgba(255,255,255,.62)}
.card--plain{box-shadow:none}
.card--cut{clip-path:var(--cut)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--navy-2);background:rgba(30,111,217,.10);
  padding:5px 10px;
}
.tag--cyan{color:#0C7E6C;background:rgba(22,194,166,.14)}
.tag--warm{color:#A83D00;background:rgba(255,106,19,.16)}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;font-size:14px;font-weight:700;
  color:var(--navy-2);background:var(--white);
  border:1px solid var(--line);
  clip-path:var(--cut-sm);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip.is-active,.chip[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:var(--white)}
.chip__count{font-family:var(--font-mono);font-size:12px;color:var(--orange)}
.chip.is-active .chip__count,.chip[aria-pressed="true"] .chip__count{color:var(--orange-soft)}
.chip--dark{background:rgba(255,255,255,.06);border-color:var(--line-inv);color:rgba(255,255,255,.86)}

/* --- 6. 按钮 ------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-size:15px;font-weight:800;letter-spacing:.01em;
  border:1px solid transparent;
  clip-path:var(--cut-sm);
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn--sm{padding:9px 16px;font-size:13.5px}
.btn--solid{background:var(--orange);color:var(--ink);box-shadow:0 14px 26px -18px rgba(255,106,19,.95)}
.btn--solid:hover{background:var(--orange-soft);transform:translateY(-2px)}
.btn--outline{background:transparent;border-color:rgba(255,255,255,.42);color:var(--white)}
.btn--outline:hover{border-color:var(--cyan);background:rgba(22,194,166,.14);transform:translateY(-2px)}
.btn--quiet{background:var(--white);border-color:var(--line);color:var(--navy)}
.btn--quiet:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}

/* --- 7. 页头命令栏 ------------------------------------------------------- */
.skip-link{
  position:absolute;left:16px;top:-64px;z-index:200;
  padding:10px 18px;background:var(--white);color:var(--navy);
  font-weight:800;font-size:14px;border:2px solid var(--blue);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}

.cmd-bar{
  position:sticky;top:0;z-index:80;
  background:var(--navy);color:var(--white);
  border-bottom:1px solid rgba(30,111,217,.4);
}
.cmd-bar::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:88px 100%;
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 62%);
  mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 62%);
}
.cmd-bar__inner{
  position:relative;z-index:1;
  height:var(--h-bar);
  display:flex;align-items:center;gap:clamp(12px,2vw,26px);
  transition:height .2s var(--ease);
}
.cmd-bar.is-condensed .cmd-bar__inner{height:56px}
.cmd-bar.is-condensed .brand__sub{opacity:0;visibility:hidden}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:linear-gradient(90deg,var(--orange),var(--orange-soft) 42%,var(--cyan));
  transform:scaleX(0);transform-origin:left center;
  will-change:transform;
}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  position:relative;display:grid;place-items:center;
  width:38px;height:38px;
  background:linear-gradient(135deg,var(--navy-2),var(--blue));
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.brand__slash{
  position:absolute;inset:0;
  background:linear-gradient(96deg,transparent 44%,var(--orange) 44%,var(--orange) 58%,transparent 58%);
}
.brand__glyph{position:relative;font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--white)}
.brand__text{display:flex;flex-direction:column;line-height:1.2;transition:opacity .2s var(--ease)}
.brand__name{font-size:19px;font-weight:900;letter-spacing:-.01em}
.brand__sub{font-size:11px;letter-spacing:.1em;color:rgba(255,255,255,.58)}

.cmd-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.cmd-nav__list{display:flex;align-items:center;gap:2px}
.cmd-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 12px;font-size:15px;font-weight:700;
  color:rgba(255,255,255,.76);
  transition:color .18s var(--ease);
}
.cmd-nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--blue);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .18s var(--ease),background .18s var(--ease);
}
.cmd-nav__link:hover{color:var(--white)}
.cmd-nav__link:hover::after{transform:scaleX(1)}
.cmd-nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:rgba(255,255,255,.36);transition:color .18s var(--ease)}
.cmd-nav__link[aria-current="page"]{color:var(--white)}
.cmd-nav__link[aria-current="page"]::after{background:var(--orange);transform:scaleX(1)}
.cmd-nav__link[aria-current="page"] .cmd-nav__idx{color:var(--orange)}
.cmd-nav__label,.cmd-nav__foot{display:none}

.cmd-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.status-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;font-size:12px;font-weight:700;
  color:rgba(255,255,255,.82);
  border:1px solid rgba(22,194,166,.42);
  background:rgba(22,194,166,.10);
}
.status-chip__dot{
  width:6px;height:6px;background:var(--cyan);
  box-shadow:0 0 0 3px rgba(22,194,166,.22);
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(22,194,166,.22)}
  50%{opacity:.55;box-shadow:0 0 0 6px rgba(22,194,166,.10)}
}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;
  border:1px solid rgba(255,255,255,.38);color:var(--white);
  font-size:14px;font-weight:700;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(22,194,166,.12)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg)}

/* --- 8. 媒体容器基础规则 ------------------------------------------------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16 / 9;
  background:linear-gradient(150deg,var(--navy),var(--navy-2) 58%,var(--blue));
  clip-path:var(--cut);
}
.media-frame::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.10) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:44px 44px;
}
.media-frame::after{
  content:"";position:absolute;left:-10%;right:-10%;bottom:-14%;height:34%;
  background:linear-gradient(96deg,rgba(255,106,19,.9),rgba(255,184,119,.5));
  transform:skewY(-6deg);transform-origin:left center;
  mix-blend-mode:normal;
}
.media-frame img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame__tag{
  position:absolute;z-index:2;left:0;bottom:0;
  padding:8px 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--white);background:rgba(11,27,51,.88);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--plain{clip-path:none}
.media-frame--plain::after{display:none}

/* --- 9. 章节头 / 面包屑 / 正文 ------------------------------------------ */
.sec-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 24px;
  margin-bottom:clamp(24px,3vw,40px);
}
.sec-head__num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1;
  color:rgba(30,111,217,.20);letter-spacing:.02em;
}
.sec--navy .sec-head__num{color:rgba(255,255,255,.24)}
.sec-head__text{flex:1 1 260px;min-width:0}
.sec-head__title{font-size:clamp(1.4rem,3vw,2rem);font-weight:900;line-height:1.2;letter-spacing:-.01em}
.sec-head__desc{margin-top:8px;font-size:15px;color:var(--gray);max-width:34em}
.sec--navy .sec-head__desc{color:rgba(255,255,255,.66)}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--gray)}
.crumbs__sep{color:var(--line)}
.crumbs a{color:var(--navy-2);border-bottom:1px solid transparent;transition:border-color .18s var(--ease),color .18s var(--ease)}
.crumbs a:hover{color:var(--blue);border-bottom-color:var(--blue)}
.crumbs [aria-current="page"]{color:var(--ink);font-weight:700}

.prose{max-width:52rem}
.prose p{max-width:34em;margin-bottom:1.05em;color:var(--gray)}
.prose h2{font-size:1.5rem;font-weight:900;margin:1.8em 0 .6em;letter-spacing:-.01em;color:var(--ink)}
.prose h3{font-size:1.15rem;font-weight:800;margin:1.5em 0 .5em;color:var(--ink)}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.2em}
.prose li{max-width:32em;margin-bottom:.5em;color:var(--gray)}
.prose ul li{list-style:none;position:relative;padding-left:18px}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--orange)}
.prose ol{list-style:decimal}
.prose strong{color:var(--ink)}
.prose a{color:var(--blue);border-bottom:1px solid rgba(30,111,217,.4)}
.prose a:hover{border-bottom-color:var(--blue)}
.prose blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:var(--white);border-left:4px solid var(--orange);
  clip-path:var(--cut-sm);
}

/* --- 10. 数据带 ---------------------------------------------------------- */
.data-band{
  position:relative;overflow:hidden;
  background:var(--navy);color:var(--white);
  padding-block:clamp(28px,4vw,48px);
}
.data-band::before{
  content:"";position:absolute;left:-6%;right:-6%;top:0;height:8px;
  background:linear-gradient(90deg,var(--orange),var(--orange-soft) 46%,var(--cyan));
  transform:skewY(-6deg);transform-origin:left center;
}
.stat{display:flex;flex-direction:column;gap:6px}
.stat__num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;line-height:1.05;
  color:var(--orange);
}
.stat__unit{font-size:14px;font-weight:700;color:rgba(255,255,255,.72);margin-left:4px}
.stat__label{font-size:13px;color:rgba(255,255,255,.66)}

/* --- 11. 标签切换 -------------------------------------------------------- */
.tabs__list{display:flex;flex-wrap:wrap;gap:2px;border-bottom:1px solid var(--line-soft)}
.tabs__btn{
  padding:12px 18px;font-size:15px;font-weight:800;color:var(--gray);
  border-bottom:3px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.tabs__btn:hover{color:var(--navy-2);background:rgba(30,111,217,.07)}
.tabs__btn[aria-selected="true"]{color:var(--navy);border-bottom-color:var(--orange);background:rgba(30,111,217,.06)}
.tabs__panel{padding-top:clamp(20px,2.4vw,28px)}

/* --- 12. 折叠面板 -------------------------------------------------------- */
.fold{
  background:var(--white);border:1px solid var(--line-soft);
  margin-bottom:10px;clip-path:var(--cut-sm);
  transition:box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.fold:hover{border-color:var(--line)}
.fold.is-open{box-shadow:0 20px 40px -34px rgba(11,27,51,.8)}
.fold__trigger{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  width:100%;padding:18px 22px;text-align:left;
  font-size:16px;font-weight:800;color:var(--navy);
}
.fold__q{flex:1 1 auto}
.fold__sign{position:relative;flex:0 0 auto;width:16px;height:16px;margin-top:5px}
.fold__sign::before,.fold__sign::after{
  content:"";position:absolute;background:var(--orange);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.fold__sign::before{left:0;right:0;top:7px;height:2px}
.fold__sign::after{top:0;bottom:0;left:7px;width:2px}
.fold.is-open .fold__sign::after{transform:scaleY(0);opacity:0}
.fold__panel{padding:0 22px 20px;font-size:15.5px;color:var(--gray)}
.fold__panel p{max-width:34em}

/* --- 13. 显现动效 -------------------------------------------------------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .24s var(--ease),transform .24s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* --- 14. 页脚 ------------------------------------------------------------ */
.site-foot{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,7vw,96px);
  background:var(--navy);color:rgba(255,255,255,.82);
}
.site-foot::before{
  content:"";position:absolute;left:-6%;right:-6%;top:0;height:10px;
  background:linear-gradient(90deg,var(--orange),var(--orange-soft) 44%,var(--cyan));
  transform:skewY(-6deg);transform-origin:left center;
}
.site-foot__grid{
  position:absolute;inset:0;display:block;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:88px 88px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 88%);
}
.site-foot__inner{
  position:relative;z-index:1;
  padding-top:clamp(48px,6vw,84px);
  padding-bottom:clamp(20px,2.4vw,30px);
}
.foot-top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.55fr);
  gap:clamp(28px,4vw,64px);
}
.foot-brand__mark{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(17px,2vw,20px);font-weight:900;color:var(--white);letter-spacing:-.01em;
}
.foot-brand__glyph{
  display:grid;place-items:center;flex:0 0 auto;
  width:34px;height:34px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  background:linear-gradient(135deg,var(--blue),var(--navy-2));color:var(--white);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.foot-brand__note{
  margin-top:16px;font-size:14.5px;line-height:1.7;
  color:rgba(255,255,255,.62);max-width:26em;
}
.foot-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

.foot-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.foot-col__title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;font-weight:700;
  color:var(--cyan);margin-bottom:16px;
}
.foot-links li + li{margin-top:10px}
.foot-links a{
  font-size:15px;color:rgba(255,255,255,.78);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.foot-links a:hover{color:var(--white);border-bottom-color:var(--orange)}

.foot-meta{
  margin-top:clamp(32px,4vw,56px);
  padding-top:clamp(20px,2.6vw,30px);
  border-top:1px solid var(--line-inv);
}
.foot-meta__list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.foot-meta__item dt{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:rgba(255,255,255,.46);margin-bottom:8px;
}
.foot-meta__item dd{font-size:14.5px;color:var(--white);word-break:break-word}
.foot-meta__note{margin-top:18px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.55);max-width:52em}
.foot-inline-link{color:var(--cyan);border-bottom:1px solid rgba(22,194,166,.45);transition:border-color .18s var(--ease),color .18s var(--ease)}
.foot-inline-link:hover{color:var(--white);border-bottom-color:var(--white)}

.foot-bottom{
  margin-top:clamp(26px,3vw,40px);
  padding-top:18px;
  border-top:1px solid var(--line-inv);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.foot-legal{font-family:var(--font-mono);letter-spacing:.06em}
.foot-tick{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.4)}

/* --- 15. 焦点与无障碍 ---------------------------------------------------- */
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
.sec--navy :focus-visible,.site-foot :focus-visible,.cmd-bar :focus-visible{outline-color:var(--orange-soft)}

/* --- 16. 响应式 ---------------------------------------------------------- */
@media (max-width:1100px){
  .foot-top{grid-template-columns:1fr}
  .foot-brand__note{max-width:38em}
}
@media (max-width:1040px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-3,.col-4{grid-column:span 3}
  .col-5,.col-6,.col-7{grid-column:span 6}
  .col-8,.col-9,.col-12{grid-column:span 6}
  .rail-note{position:static}
}
@media (max-width:980px){
  .cmd-bar__inner{max-width:none;width:100%}
  .cmd-tools__cta,.cmd-tools__ghost{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .cmd-nav{
    position:absolute;top:100%;left:0;right:0;
    display:block;
    background:linear-gradient(180deg,var(--navy),#0E2544);
    border-bottom:1px solid rgba(30,111,217,.42);
    box-shadow:0 34px 54px -34px rgba(0,0,0,.85);
    max-height:0;overflow:hidden;
    transition:max-height .28s var(--ease);
  }
  .cmd-nav[data-open]{max-height:min(78vh,620px);overflow-y:auto}
  .cmd-nav__list{flex-direction:column;align-items:stretch;gap:0;padding-top:6px}
  .cmd-nav__item{border-bottom:1px solid rgba(255,255,255,.09)}
  .cmd-nav__link{width:100%;padding:16px 20px;font-size:17px;color:rgba(255,255,255,.86)}
  .cmd-nav__idx{font-size:11px}
  .cmd-nav__link::after{
    left:0;right:auto;top:8px;bottom:8px;width:3px;height:auto;
    transform:scaleY(0);transform-origin:top center;
  }
  .cmd-nav__link:hover::after{transform:scaleY(1)}
  .cmd-nav__link[aria-current="page"]::after{transform:scaleY(1)}
  .cmd-nav__label{
    display:block;padding:16px 20px 4px;
    font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
    color:rgba(255,255,255,.45);
  }
  .cmd-nav__foot{display:flex;gap:10px;padding:18px 20px 22px}
  .cmd-nav__foot .btn{flex:1 1 auto}
  .foot-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .foot-meta__list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-bottom{justify-content:flex-start}
}
@media (max-width:680px){
  body{font-size:16px}
  .grid-12{grid-template-columns:1fr}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:1 / -1}
  .cmd-bar__inner{gap:12px}
  .brand__sub{display:none}
  .brand__name{font-size:17px}
  .brand__mark{width:34px;height:34px}
  .status-chip{display:none}
  .nav-toggle__text{display:none}
  .foot-cols{grid-template-columns:1fr;gap:28px}
  .foot-meta__list{grid-template-columns:1fr;gap:16px}
  .tabs__btn{padding:11px 14px;font-size:14px}
}

/* --- 17. 动效降级 -------------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none}
}