/* ==========================================================================
   188电子主站 · /assets/site.css
   共享外壳：控制台式命令栏 + 编辑部目录式页脚
   ========================================================================== */

/* 01 · 变量 */
:root{
  --ink-900:#0B0E14;
  --ink-800:#141A22;
  --ink-700:#1B2430;
  --blue:#0A84FF;
  --blue-soft:rgba(10,132,255,.12);
  --cyan:#00E5C7;
  --cyan-soft:rgba(0,229,199,.12);
  --orange:#FF6B35;
  --paper:#F5F7FA;
  --cream:#F2EFE9;
  --rock:#6B7684;
  --moss:#3E6B58;
  --clay:#C9663C;
  --text:#F5F7FA;
  --text-dim:#A8B2C0;
  --line:rgba(245,247,250,.12);
  --line-strong:rgba(245,247,250,.26);
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --rail:92px;
  --bar-h:56px;
  --radius:14px;
  --radius-sm:10px;
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --fast:180ms;
  --slow:240ms;
}

/* 02 · 重置与中文排版 */
*,*::before,*::after{box-sizing:border-box}
html{background:var(--ink-900);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:transparent;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(245,247,250,.03) 1px,transparent 1px),
    linear-gradient(rgba(245,247,250,.03) 1px,transparent 1px);
  background-size:72px 72px,72px 72px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(70% 55% at 12% -8%,rgba(10,132,255,.20),transparent 65%),
    radial-gradient(45% 45% at 96% 6%,rgba(0,229,199,.12),transparent 70%),
    radial-gradient(60% 50% at 50% 112%,rgba(62,107,88,.18),transparent 70%);
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--paper)}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.05em;padding-left:1.25em}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
a{color:var(--blue);text-decoration:none;transition:color var(--fast) var(--ease)}
a:hover{color:var(--cyan)}
::selection{background:var(--cyan);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
[id]{scroll-margin-top:calc(var(--bar-h) + 16px)}

/* 03 · 通用工具 */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.mono{font-family:var(--font-mono);font-size:.92em;letter-spacing:.06em}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.skip-link{
  position:fixed;left:12px;top:-64px;z-index:200;padding:10px 18px;
  background:var(--cyan);color:var(--ink-900)!important;font-weight:700;
  border-radius:0 0 12px 12px;transition:top var(--fast) var(--ease);
}
.skip-link:focus{top:0}
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;pointer-events:none;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  transform:scaleX(0);transform-origin:left center;
  transition:transform 120ms linear;
}
.link{position:relative;color:var(--paper)}
.link::after{content:"";position:absolute;left:50%;right:50%;bottom:-3px;height:1px;background:var(--cyan);transition:left var(--fast) var(--ease),right var(--fast) var(--ease)}
.link:hover::after,.link:focus-visible::after{left:0;right:0}

/* 04 · 版面原语 */
.section{padding:clamp(48px,7vw,104px) 0}
.section--tight{padding:clamp(30px,4vw,56px) 0}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 20px;margin-bottom:clamp(24px,3.2vw,44px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.75}
.index-num{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--blue)}
.section-title{font-size:clamp(1.6rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.02em;color:var(--paper)}
.section-title--display{font-size:clamp(2.4rem,7vw,5.2rem);line-height:1.03;letter-spacing:-.03em}
.divider{height:1px;border:0;margin:clamp(32px,5vw,68px) 0;background:linear-gradient(90deg,transparent,var(--line-strong),transparent)}
.grid{display:grid;gap:clamp(16px,2vw,26px);grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid__main{grid-column:span 12}
.grid__aside{grid-column:span 12}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,20px)}
.cluster{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
@media (min-width:900px){
  .grid__main{grid-column:span 8}
  .grid__aside{grid-column:span 4}
}
@media (min-width:1240px){
  .grid__main{grid-column:span 9}
  .grid__aside{grid-column:span 3}
}

/* 05 · 基础组件 */
.card{
  position:relative;padding:clamp(18px,2.4vw,28px);
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.card:hover{border-color:var(--cyan);transform:translateY(-2px)}
.card--accent{border-top:2px solid var(--cyan)}
.card--paper{background:var(--cream);color:#1B2430;border-color:rgba(11,14,20,.08)}
.card--paper .card__title{color:#0B0E14}
.card--paper .card__meta{color:var(--rock)}
.card--paper .card__text{color:#3B4653}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--rock)}
.card__title{margin:8px 0 6px;font-size:1.15rem;font-weight:700}
.card__text{margin:0;font-size:15px;color:var(--text-dim)}

.panel{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--ink-800);overflow:hidden}
.panel+.panel{margin-top:10px}
.panel__title{
  display:flex;align-items:center;gap:12px;padding:16px 18px;cursor:pointer;
  font-weight:600;color:var(--paper);list-style:none;
}
.panel__title::-webkit-details-marker{display:none}
.panel__title::after{content:"+";margin-left:auto;font-family:var(--font-mono);color:var(--cyan)}
.panel[open]>.panel__title::after{content:"–"}
.panel[open]>.panel__title{border-bottom:1px solid var(--line)}
.panel__body{padding:16px 18px;color:var(--text-dim);font-size:15px;animation:panelIn var(--slow) var(--ease) both}
@keyframes panelIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(245,247,250,.04);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--text-dim);
  transition:border-color var(--fast) var(--ease),color var(--fast) var(--ease);
}
.tag--cyan{border-color:rgba(0,229,199,.45);color:var(--cyan)}
.tag--orange{border-color:rgba(255,107,53,.5);color:var(--orange)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color var(--fast) var(--ease),color var(--fast) var(--ease),border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease),transform var(--fast) var(--ease);
}
.btn--primary{background:var(--blue);color:#fff}
.btn--primary:hover,.btn--primary:focus-visible{background:var(--cyan);color:var(--ink-900);box-shadow:0 10px 26px -14px rgba(0,229,199,.9)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--paper)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--cyan);color:var(--cyan)}
.btn--quiet{background:rgba(245,247,250,.06);color:var(--paper)}
.btn--quiet:hover{background:var(--blue-soft);color:var(--cyan)}
.btn:active{transform:translateY(1px)}

.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--rock)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 22px;padding:0;list-style:none}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--line-strong)}
.breadcrumb__item a{color:var(--text-dim)}
.breadcrumb__item a:hover{color:var(--cyan)}
.breadcrumb__item[aria-current="page"]{color:var(--cyan)}

.prose{max-width:68ch}
.prose h2{margin:2em 0 .6em;font-size:1.5rem}
.prose h3{margin:1.6em 0 .5em;font-size:1.15rem}
.prose p,.prose li{color:var(--text-dim)}
.prose strong{color:var(--paper)}
.prose li::marker{color:var(--cyan)}
.prose a{border-bottom:1px solid rgba(10,132,255,.5)}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}

.media{
  position:relative;display:block;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(10,132,255,.20),transparent 62%),
    linear-gradient(160deg,#141A22,#0B0E14);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,229,199,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,229,199,.07) 1px,transparent 1px);
  background-size:28px 28px;
}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media--16-9{aspect-ratio:16/9}
.media--4-3{aspect-ratio:4/3}
.media--1-1{aspect-ratio:1/1}
.media--21-9{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}

.notice{
  padding:14px 18px;border-left:2px solid var(--blue);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:rgba(10,132,255,.07);color:var(--text-dim);font-size:15px;
}
.notice--cyan{border-left-color:var(--cyan);background:var(--cyan-soft)}
.notice--orange{border-left-color:var(--orange);background:rgba(255,107,53,.09)}

/* 06 · 头部命令栏 · 共用零件 */
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--paper);text-decoration:none;min-width:0}
.brand:hover{color:var(--paper)}
.brand__mark{
  display:grid;place-items:center;flex:0 0 auto;width:36px;height:36px;border-radius:10px;
  background:linear-gradient(150deg,var(--blue),#0466C8);color:#fff;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.02em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand__name{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--paper);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--rock)}

.nav__list{margin:0;padding:0;list-style:none}
.nav__link{color:var(--text-dim);text-decoration:none}
.nav__label{display:inline-block}
.nav__mark{display:none;width:10px;height:10px;background:var(--blue)}
.nav__fly{display:none}

.cmdbar__tools{margin:0}
.util-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border:1px solid var(--line);border-radius:999px;
  color:var(--text-dim);font-size:13px;line-height:1.3;
  transition:color var(--fast) var(--ease),border-color var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.util-link::before{content:"";flex:0 0 auto;width:5px;height:5px;border-radius:1px;background:currentColor;opacity:.65}
.util-link:hover,.util-link:focus-visible{color:var(--cyan);border-color:var(--cyan);background:var(--cyan-soft)}

.status-chip{
  display:inline-flex;align-items:center;gap:7px;margin:0;padding:5px 10px;min-width:0;
  border:1px solid var(--line);border-radius:999px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--text-dim);
}
.status-chip__dot{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,199,.16)}
.status-chip__text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:14em}

.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;padding:8px 13px;
  border:1px solid var(--line-strong);border-radius:999px;background:rgba(245,247,250,.03);
  color:var(--paper);font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;cursor:pointer;
  transition:border-color var(--fast) var(--ease),color var(--fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:currentColor;transition:background-color var(--fast) var(--ease)}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
  transition:transform var(--fast) var(--ease),top var(--fast) var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}

/* 07 · 头部命令栏 · 桌面左侧常驻（≥1024px） */
@media (min-width:1024px){
  body{padding-left:var(--rail)}
  [id]{scroll-margin-top:24px}
  .skip-link{left:calc(var(--rail) + 14px)}
  .scroll-progress{left:var(--rail)}
  .site-header{
    position:fixed;top:0;left:0;bottom:0;width:var(--rail);z-index:80;
    background:var(--ink-800);border-right:1px solid var(--line);
  }
  .site-header::after{content:"";position:absolute;top:0;right:-1px;width:1px;height:34%;background:linear-gradient(180deg,var(--cyan),rgba(0,229,199,0))}
  .cmdbar{position:relative;display:flex;flex-direction:column;gap:14px;height:100%;padding:18px 10px}

  .brand{flex-direction:column;gap:8px;text-align:center}
  .brand__mark{width:44px;height:44px;border-radius:12px;font-size:12px}
  .brand__text{align-items:center}
  .brand__name{writing-mode:vertical-rl;font-size:10px;font-weight:700;letter-spacing:.22em;line-height:1;overflow:visible;text-overflow:clip}
  .brand__sub{display:none}

  .nav{flex:1 1 auto;display:flex;align-items:center;min-height:0}
  .nav__list{display:flex;flex-direction:column;gap:2px;width:100%}
  .nav__item{width:100%}
  .nav__link{
    position:relative;display:flex;flex-direction:row;align-items:center;justify-content:center;gap:7px;
    padding:9px 0;border-radius:10px;
    transition:color var(--fast) var(--ease),background-color var(--fast) var(--ease);
  }
  .nav__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--rock);transition:color var(--fast) var(--ease)}
  .nav__label{writing-mode:vertical-rl;font-size:11px;font-weight:600;letter-spacing:.1em;white-space:nowrap}
  .nav__link:hover{color:var(--paper);background:var(--blue-soft)}
  .nav__link:hover .nav__index{color:var(--blue)}
  .nav__link[aria-current="page"]{color:var(--cyan);background:linear-gradient(180deg,var(--cyan-soft),rgba(0,229,199,0))}
  .nav__link[aria-current="page"] .nav__index{color:var(--cyan)}
  .nav__link[aria-current="page"]::before{content:"";position:absolute;left:-10px;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--cyan)}
  .nav__fly{
    display:flex;align-items:center;gap:9px;position:absolute;left:calc(100% + 8px);top:50%;z-index:85;
    padding:8px 15px;border:1px solid var(--line-strong);border-radius:10px;
    background:var(--ink-700);color:var(--paper);font-size:13px;white-space:nowrap;
    opacity:0;pointer-events:none;transform:translateY(-50%) translateX(-6px);
    transition:opacity var(--fast) var(--ease),transform var(--fast) var(--ease);
  }
  .nav__link:hover .nav__fly,.nav__link:focus-visible .nav__fly{opacity:1;transform:translateY(-50%) translateX(0)}

  .cmdbar__tools{margin-top:auto;display:flex;flex-direction:column;align-items:center;gap:4px;padding-top:12px;border-top:1px solid var(--line)}
  .util-link{width:100%;justify-content:center;gap:5px;padding:6px 4px;border-color:transparent;background:none;font-size:11px;letter-spacing:.02em;color:var(--rock)}
  .util-link:hover,.util-link:focus-visible{border-color:transparent;background:var(--cyan-soft)}

  .status-chip{flex-direction:column;gap:6px;padding:10px 0 0;border:0;border-radius:0;font-size:9px;letter-spacing:.06em;text-align:center}
  .status-chip__text{max-width:72px;white-space:normal;overflow:visible;text-overflow:clip;line-height:1.62}

  .nav-toggle{display:none}
}
@media (min-width:1024px) and (max-height:800px){
  .cmdbar{gap:10px;padding:12px 10px}
  .brand__name{display:none}
  .nav__link{padding:7px 0}
  .cmdbar__tools{padding-top:8px}
}
@media (min-width:1024px) and (max-height:640px){
  .util-link{font-size:0;gap:0;padding:5px}
  .util-link::before{width:9px;height:9px;border-radius:2px}
}

/* 08 · 头部命令栏 · 移动顶部条 + 全屏索引（<1024px） */
@media (max-width:1023.98px){
  body{padding-top:var(--bar-h)}
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:90;height:var(--bar-h);
    background:rgba(11,14,20,.94);border-bottom:1px solid var(--line);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  }
  .cmdbar{position:relative;display:flex;align-items:center;gap:10px;height:100%;padding:0 58px 0 14px}
  .brand{gap:9px}
  .brand__mark{width:32px;height:32px;border-radius:9px;font-size:10px}
  .brand__name{font-size:15px}
  .brand__sub{display:none}
  .nav{display:none}
  .cmdbar__tools{display:none}
  .status-chip{margin-left:auto;padding:5px 10px;font-size:10px}
  .nav-toggle{position:absolute;top:50%;right:12px;transform:translateY(-50%)}

  .site-header[data-open]{bottom:0;height:100vh;height:100dvh;background:var(--ink-900)}
  .site-header[data-open] .cmdbar{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    height:100%;padding:0;overflow-y:auto;-webkit-overflow-scrolling:touch;
  }
  .site-header[data-open] .nav-toggle{top:26px;transform:none}
  .site-header[data-open] .brand{flex:0 0 auto;gap:11px;padding:14px 62px 14px 16px;border-bottom:1px solid var(--line)}
  .site-header[data-open] .brand__name{font-size:16px}

  .site-header[data-open] .nav{display:block;flex:0 0 auto;padding:8px 16px 0}
  .site-header[data-open] .nav__list{display:flex;flex-direction:column}
  .site-header[data-open] .nav__item{border-bottom:1px solid var(--line)}
  .site-header[data-open] .nav__link{display:flex;flex-direction:row;align-items:center;gap:14px;padding:16px 6px;font-size:17px;font-weight:600;color:var(--paper)}
  .site-header[data-open] .nav__index{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--rock)}
  .site-header[data-open] .nav__label{writing-mode:horizontal-tb;font-size:17px;letter-spacing:.04em}
  .site-header[data-open] .nav__mark{display:block;margin-left:auto;flex:0 0 auto}
  .site-header[data-open] .nav__item:nth-child(1) .nav__mark{border-radius:50%;background:var(--cyan)}
  .site-header[data-open] .nav__item:nth-child(2) .nav__mark{border-radius:2px;background:var(--blue)}
  .site-header[data-open] .nav__item:nth-child(3) .nav__mark{transform:rotate(45deg);background:var(--cyan)}
  .site-header[data-open] .nav__item:nth-child(4) .nav__mark{border-radius:50% 0 50% 0;background:var(--orange)}
  .site-header[data-open] .nav__item:nth-child(5) .nav__mark{border-radius:2px;background:var(--paper);opacity:.55}
  .site-header[data-open] .nav__item:nth-child(6) .nav__mark{border-radius:0 50% 50% 0;background:var(--moss)}
  .site-header[data-open] .nav__link[aria-current="page"]{color:var(--cyan)}
  .site-header[data-open] .nav__link[aria-current="page"] .nav__index{color:var(--cyan)}
  .site-header[data-open] .nav__link[aria-current="page"] .nav__mark{box-shadow:0 0 0 3px rgba(0,229,199,.2)}

  .site-header[data-open] .cmdbar__tools{display:flex;flex-wrap:wrap;gap:8px;padding:18px 16px 0}
  .site-header[data-open] .status-chip{
    margin:auto 0 0;padding:16px;border:0;border-top:1px solid var(--line);border-radius:0;
    font-size:11px;background:rgba(245,247,250,.02);text-align:left;
  }
  .site-header[data-open] .status-chip__text{max-width:none;white-space:normal;overflow:visible;text-overflow:clip}
}
@media (max-width:420px){
  .brand__mark{width:28px;height:28px;border-radius:8px}
  .brand__name{font-size:14px}
  .status-chip__text{max-width:7em}
}

/* 09 · 页脚 */
.site-footer{position:relative;background:var(--ink-800);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--blue),var(--cyan) 45%,transparent)}
.footer-top{padding:clamp(40px,6vw,74px) 0 clamp(26px,4vw,46px)}
.footer-grid{display:grid;gap:clamp(26px,3vw,44px);grid-template-columns:1fr}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px;max-width:38ch}
.brand--footer .brand__mark{width:40px;height:40px;border-radius:11px;font-size:11px}
.brand--footer .brand__name{font-size:15px}
.brand--footer .brand__sub{font-size:10px}
.footer-brand__line{margin:0;font-size:14px;color:var(--text-dim)}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col__title{display:flex;align-items:baseline;gap:9px;margin:0;font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--paper)}
.footer-col__index{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--blue)}
.footer-col__list{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}
.footer-link{
  position:relative;display:inline-block;padding-left:0;
  color:var(--text-dim);font-size:14px;text-decoration:none;
  transition:color var(--fast) var(--ease),padding-left var(--fast) var(--ease);
}
.footer-link::before{content:"";position:absolute;left:0;top:50%;width:0;height:1px;background:var(--cyan);transition:width var(--fast) var(--ease)}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan);padding-left:11px}
.footer-link:hover::before,.footer-link:focus-visible::before{width:7px}

.footer-contact{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(245,247,250,.02)}
.footer-contact__inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px 30px;padding-top:18px;padding-bottom:18px}
.footer-contact__item{display:inline-flex;align-items:center;gap:9px;margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--text-dim)}
.footer-contact__label{font-size:10px;letter-spacing:.16em;color:var(--rock)}
.footer-contact__note{margin:0 0 0 auto;font-size:12px;color:var(--rock)}
.footer-bottom__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;padding-top:18px;padding-bottom:26px}
.footer-bottom__addr{margin:0;max-width:62ch;font-size:12px;color:var(--rock)}
.footer-bottom__legal{margin:0;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--rock)}

@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr}
  .footer-brand{grid-column:auto}
}

/* 10 · 动效降级 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
  }
  .card:hover{transform:none}
  .link::after{left:0;right:0}
}