/* ============================================================
   beat365升 · 设备档案站 — 共享样式 /assets/site.css
   底：深钢蓝；重音：暖砂橙；四族色标：青绿 / 电光蓝 / 暖砂 / 紫
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}

:root{
  --steel-deep:#0E2A3A;
  --steel-mid:#17475E;
  --slate-ink:#0A1A24;
  --sand-orange:#E4762B;
  --sand-soft:#F2B27A;
  --cyan-signal:#35E0C0;
  --cyan-dim:#1FA48F;
  --electric-blue:#4FB3FF;
  --violet-signal:#8E6BFF;
  --paper-warm:#F4F1EA;
  --ink-text:#101820;
  --muted-steel:#7C8F9A;

  --line:rgba(124,143,154,.26);
  --line-strong:rgba(124,143,154,.5);
  --line-dark:rgba(16,24,32,.14);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --w-max:1320px;
  --gap:24px;
  --pad-x:clamp(16px,4vw,40px);
  --radius:4px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- reset ---------- */
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--steel-deep);
  color:var(--paper-warm);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2}
p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse}
[id]{scroll-margin-top:120px}
main{display:block}

:focus-visible{outline:2px solid var(--electric-blue);outline-offset:2px}

/* ---------- 通用排版层 ---------- */
.display{
  font-size:clamp(2.4rem,6vw,4.6rem);
  font-weight:900;
  line-height:1.02;
  letter-spacing:-.03em;
}
.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-signal);
}
.lede{
  font-family:var(--font-serif);
  font-size:clamp(17px,1.5vw,21px);
  line-height:1.85;
  max-width:68ch;
  color:rgba(244,241,234,.86);
}
.prose{
  max-width:68ch;
  font-size:16.5px;
  line-height:1.8;
  color:rgba(244,241,234,.82);
}
.prose > * + *{margin-top:1em}
.prose h3{font-size:20px;font-weight:700;letter-spacing:-.01em;margin-top:1.6em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.muted{color:var(--muted-steel)}
.rule{height:1px;border:0;background:var(--line);margin:clamp(24px,4vw,48px) 0}
.stack{display:flex;flex-direction:column;gap:clamp(12px,1.6vw,20px)}
.cluster{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:var(--w-max);margin:0 auto;padding-inline:var(--pad-x)}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.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-12{grid-column:span 12}
.col-2-7{grid-column:2 / 8}
.col-8-13{grid-column:8 / 13}

/* ---------- 章节 ---------- */
.section{position:relative;padding-block:clamp(48px,7.5vw,112px)}
.section--mid{background:var(--steel-mid)}
.section--ink{background:var(--slate-ink)}
.section--paper{background:var(--paper-warm);color:var(--ink-text)}
.section--paper .lede{color:rgba(16,24,32,.82)}
.section--paper .prose{color:rgba(16,24,32,.8)}
.section--paper .muted{color:rgba(16,24,32,.58)}
.section--paper .eyebrow{color:var(--cyan-dim)}

.sec-head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 20px;
  margin-bottom:clamp(22px,3vw,40px);
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.section--paper .sec-head{border-bottom-color:var(--line-dark)}
.sec-head__idx{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--cyan-signal)}
.section--paper .sec-head__idx{color:var(--cyan-dim)}
.sec-head__title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;letter-spacing:-.02em}
.sec-head__note{
  margin-left:auto;max-width:34ch;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--muted-steel);
}

/* ---------- 档案卡 / 铭牌 ---------- */
.card{
  position:relative;
  background:var(--steel-mid);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(18px,2.4vw,30px);
  transition:border-color .18s var(--ease);
}
.card:hover{border-color:var(--line-strong)}
.card--paper{background:var(--paper-warm);color:var(--ink-text);border-color:var(--line-dark)}
.card--paper:hover{border-color:rgba(228,118,43,.6)}
.card__idx{
  position:absolute;top:0;right:0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:5px 10px;
  background:var(--slate-ink);color:var(--sand-soft);
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
}
.card--paper .card__idx{background:var(--sand-orange);color:var(--slate-ink)}
.card__title{font-size:clamp(1.1rem,1.6vw,1.35rem);font-weight:800;letter-spacing:-.015em}
.card__body{margin-top:12px;font-size:15.5px;line-height:1.75;max-width:56ch;color:rgba(244,241,234,.78)}
.card--paper .card__body{color:rgba(16,24,32,.78)}

.plate{
  position:relative;
  display:flex;flex-direction:column;gap:6px;
  background:var(--slate-ink);
  border:1px solid var(--line-strong);
  border-radius:3px;
  padding:clamp(18px,2.2vw,26px);
}
.plate::after{
  content:"";position:absolute;inset:7px;border:1px solid rgba(124,143,154,.16);
  border-radius:2px;pointer-events:none;
}
.plate__no{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan-signal);
}
.plate__val{
  font-family:var(--font-mono);font-weight:600;
  font-size:clamp(26px,4vw,44px);line-height:1;
  font-variant-numeric:tabular-nums;color:var(--paper-warm);
}
.plate__label{font-size:13px;color:var(--muted-steel)}

/* ---------- 标签 / 色标 / 图例 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;
  padding:4px 9px;border:1px solid var(--line-strong);border-radius:2px;
  color:var(--muted-steel);background:transparent;
}
.tag--pf01{color:var(--cyan-signal);border-color:rgba(53,224,192,.5)}
.tag--pf02{color:var(--electric-blue);border-color:rgba(79,179,255,.5)}
.tag--pf03{color:var(--sand-soft);border-color:rgba(242,178,122,.55)}
.tag--pf04{color:var(--violet-signal);border-color:rgba(142,107,255,.55)}
.tag--tier{color:var(--sand-orange);border-color:rgba(228,118,43,.55)}
.tag--zone{color:var(--cyan-dim);border-color:rgba(31,164,143,.5)}

.swatch{
  display:inline-block;flex:0 0 auto;
  width:10px;height:10px;border-radius:1px;
  background:var(--muted-steel);
}
.swatch--pf01{background:var(--cyan-signal)}
.swatch--pf02{background:var(--electric-blue)}
.swatch--pf03{background:var(--sand-soft)}
.swatch--pf04{background:var(--violet-signal)}
.swatch--tier{background:var(--sand-orange)}
.swatch--zone{background:var(--cyan-dim)}

.legend{display:flex;flex-wrap:wrap;gap:10px 22px;font-family:var(--font-mono);font-size:12px;color:var(--muted-steel)}
.legend__item{display:inline-flex;align-items:center;gap:8px}
.legend__text{letter-spacing:.06em}

/* ---------- 对照表 ---------- */
.dtable{width:100%;font-size:15px;border-collapse:collapse}
.dtable caption{
  caption-side:top;text-align:left;padding-bottom:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted-steel);
}
.dtable th,.dtable td{
  text-align:left;vertical-align:top;
  padding:11px 14px;border-bottom:1px solid var(--line);
}
.dtable thead th{
  background:var(--slate-ink);color:var(--sand-soft);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;font-weight:600;
  border-bottom-color:var(--line-strong);
}
.dtable tbody tr{transition:background-color .16s var(--ease)}
.dtable tbody tr:hover{background:rgba(53,224,192,.07)}
.dtable tbody tr:focus-within{background:rgba(79,179,255,.08);outline:1px solid rgba(79,179,255,.4)}
.dtable th:first-child,.dtable td:first-child{font-family:var(--font-mono);letter-spacing:.04em}
.dtable--paper{color:var(--ink-text)}
.dtable--paper th,.dtable--paper td{border-bottom-color:var(--line-dark)}
.dtable--paper thead th{background:var(--ink-text);color:var(--sand-soft)}
.dtable--paper tbody tr:hover{background:rgba(31,164,143,.1)}

/* ---------- 图版容器 ---------- */
.media{
  position:relative;overflow:hidden;isolation:isolate;
  background:var(--steel-mid);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.media img{width:100%;height:100%;object-fit:cover;filter:saturate(.86) contrast(1.03) brightness(.96)}
.media--3x2{aspect-ratio:3 / 2}
.media--16x10{aspect-ratio:16 / 10}
.media--4x3{aspect-ratio:4 / 3}
.media--1x1{aspect-ratio:1 / 1}
.media--slant{clip-path:polygon(0 0,100% 0,100% calc(100% - 56px),0 100%)}
.media--tint::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:rgba(14,42,58,.3);
}
.media__grid{
  position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:
    repeating-linear-gradient(0deg,rgba(53,224,192,.18) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(90deg,rgba(53,224,192,.18) 0 1px,transparent 1px 40px);
}
.media__cap{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--muted-steel);
}

/* ---------- 按钮 / 面包屑 / 目录 / 提示 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  padding:10px 18px;border:1px solid transparent;border-radius:2px;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn--solid{background:var(--sand-orange);color:var(--slate-ink)}
.btn--solid:hover{background:var(--sand-soft)}
.btn--ghost{border-color:var(--line-strong);color:var(--paper-warm)}
.btn--ghost:hover{border-color:var(--cyan-signal);color:var(--cyan-signal)}
.btn--sm{padding:7px 14px;font-size:13px}
.section--paper .btn--ghost{border-color:rgba(16,24,32,.3);color:var(--ink-text)}
.section--paper .btn--ghost:hover{border-color:var(--cyan-dim);color:var(--cyan-dim)}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted-steel);
}
.crumbs__item{color:inherit}
.crumbs__item a{border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.crumbs__item a:hover{color:var(--cyan-signal);border-bottom-color:currentColor}
.crumbs__item[aria-current="page"]{color:var(--paper-warm)}
.crumbs__sep{color:rgba(124,143,154,.6)}

.toc{position:sticky;top:128px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}
.toc__list{display:flex;flex-direction:column;gap:2px}
.toc__link{
  display:block;padding:7px 0 7px 12px;
  border-left:2px solid var(--line);color:var(--muted-steel);
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.toc__link:hover{color:var(--paper-warm);border-left-color:var(--sand-soft)}
.toc__link[aria-current="true"]{color:var(--cyan-signal);border-left-color:var(--cyan-signal)}
.toc--paper .toc__link{color:rgba(16,24,32,.55);border-left-color:var(--line-dark)}
.toc--paper .toc__link:hover{color:var(--ink-text);border-left-color:var(--sand-orange)}
.toc--paper .toc__link[aria-current="true"]{color:var(--cyan-dim);border-left-color:var(--cyan-dim)}

.callout{
  border-left:3px solid var(--sand-orange);
  background:rgba(228,118,43,.09);
  border-radius:0 var(--radius) var(--radius) 0;
  padding:16px 20px;max-width:68ch;font-size:15px;line-height:1.75;
}
.callout__idx{
  display:block;margin-bottom:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--sand-soft);
}

/* ---------- 页面显现 ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 头部：紧凑命令栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--steel-deep);
  border-bottom:1px solid var(--line-strong);
}
.skip-link{
  position:absolute;left:12px;top:-120px;z-index:120;
  background:var(--sand-orange);color:var(--slate-ink);
  font-size:14px;font-weight:700;padding:10px 16px;border-radius:2px;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:10px}

.cmdbar{border-bottom:1px solid var(--line)}
.cmdbar__inner{
  max-width:var(--w-max);margin:0 auto;padding:0 var(--pad-x);
  min-height:64px;display:flex;align-items:center;gap:clamp(12px,2vw,28px);
}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:30px;height:30px;display:grid;place-items:center;
  background:var(--sand-orange);color:var(--slate-ink);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.02em;
  border-radius:2px;
  clip-path:polygon(0 0,100% 0,100% 100%,9px 100%,0 calc(100% - 9px));
}
.brand__text{display:flex;flex-direction:column;line-height:1.14}
.brand__name{font-size:15px;font-weight:800;letter-spacing:-.01em;color:var(--paper-warm)}
.brand__sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted-steel);
}
.cmdbar__code{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:rgba(124,143,154,.75);
  padding-left:clamp(12px,2vw,24px);border-left:1px solid var(--line);
}

.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:clamp(8px,1.5vw,20px)}
.site-nav__item{display:block}
.site-nav__link{
  display:inline-flex;align-items:baseline;gap:6px;
  padding:6px 0 7px;
  font-size:14px;font-weight:500;color:rgba(244,241,234,.76);
  border-bottom:2px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.site-nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--muted-steel)}
.site-nav__link:hover{color:var(--paper-warm);border-bottom-color:var(--sand-soft)}
.site-nav__link[aria-current="page"]{color:var(--cyan-signal);border-bottom-color:var(--cyan-signal)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--cyan-dim)}

.cmd-cta{
  flex:0 0 auto;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  color:var(--sand-soft);
  border:1px solid rgba(228,118,43,.55);border-radius:2px;
  padding:7px 13px;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.cmd-cta:hover{background:var(--sand-orange);color:var(--slate-ink);border-color:var(--sand-orange)}

.nav-toggle{
  display:none;align-items:center;gap:8px;flex:0 0 auto;
  padding:8px 12px;border:1px solid var(--line-strong);border-radius:2px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:var(--paper-warm);
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:14px}
.nav-toggle__bar{display:block;height:1.5px;background:currentColor;border-radius:1px;transition:opacity .16s var(--ease)}
.nav-toggle[aria-expanded="true"]{color:var(--cyan-signal);border-color:var(--cyan-signal)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:.3}

.indexbar{background:var(--slate-ink);border-bottom:1px solid var(--line)}
.indexbar__inner{
  max-width:var(--w-max);margin:0 auto;padding:9px var(--pad-x);
  display:flex;align-items:center;gap:22px;
  overflow-x:auto;white-space:nowrap;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--muted-steel);
  scrollbar-width:none;
}
.indexbar__inner::-webkit-scrollbar{height:0}
.indexbar__item{display:inline-flex;align-items:center;gap:7px;flex:0 0 auto}
.indexbar__item--accent{color:var(--sand-soft)}

.readline{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(124,143,154,.16);overflow:hidden;
}
.readline__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(var(--p,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan-signal),var(--sand-orange));
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--slate-ink);
  color:var(--muted-steel);
  border-top:1px solid var(--line-strong);
  font-size:14px;
}
.footer__inner{
  max-width:var(--w-max);margin:0 auto;
  padding:clamp(40px,6vw,80px) var(--pad-x) clamp(20px,3vw,36px);
  display:grid;grid-template-columns:1.3fr 1.5fr .9fr 1.3fr;
  gap:clamp(20px,3vw,40px);
}
.footer__brand{display:flex;flex-direction:column;gap:12px}
.footer__name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--paper-warm)}
.footer__desc{max-width:36ch;line-height:1.7;font-size:13.5px}
.footer__col{display:flex;flex-direction:column}
.footer__col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--cyan-dim);
}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__item{display:flex;align-items:flex-start;gap:9px;line-height:1.7;font-size:13.5px}
.footer__item .swatch{margin-top:8px}
.footer__list--links .footer__link{display:inline-block;font-size:14px}
.footer__link{
  color:var(--paper-warm);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer__link:hover{color:var(--cyan-signal);border-bottom-color:currentColor}
.footer__base{
  max-width:var(--w-max);margin:0 auto;
  padding:16px var(--pad-x) 34px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px 28px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
}
.footer__legal{color:var(--sand-soft)}
.footer__note{color:var(--muted-steel);max-width:52ch}
.footer__copy{color:var(--muted-steel)}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .cmdbar__code{display:none}
  .footer__inner{grid-template-columns:1fr 1fr}
  .col-2-7{grid-column:span 6}
  .col-8-13{grid-column:span 6}
}

/* ---------- 手机 / 窄屏 ---------- */
@media (max-width:960px){
  .grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-2-7,.col-8-13{grid-column:span 6}
  .sec-head__note{margin-left:0;max-width:100%}
  .toc{position:static}

  .nav-toggle{display:inline-flex}
  .cmd-cta{font-size:12px;padding:6px 10px}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;
    background:var(--slate-ink);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line-strong);
    padding:6px var(--pad-x) 22px;
    max-height:calc(100vh - 110px);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__item{width:100%}
  .site-nav__link{
    width:100%;padding:13px 0;font-size:15px;
    border-bottom:1px solid var(--line);
  }
  .site-nav__link[aria-current="page"]{border-bottom-color:var(--cyan-signal)}
}

@media (max-width:640px){
  .cmdbar__inner{min-height:58px}
  .brand__sub{display:none}
  .footer__inner{grid-template-columns:1fr}
  .footer__base{flex-direction:column;align-items:flex-start}
  .indexbar__inner{font-size:11px;gap:16px}
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .card:hover{border-color:var(--line)}
}