/* ============================================================
   8博体育 · 共享样式 /assets/site.css
   头部 / 页脚 / 基础组件 / 通用栅格
   ============================================================ */

:root{
  --bg:#060A16;
  --bg-2:#0E1730;
  --line:#1D2A4A;
  --cyan:#22E6D8;
  --cyan-deep:#0B3B45;
  --orange:#FF5C2B;
  --lime:#C6FF4A;
  --blue-mid:#16295C;
  --ink:#F2F6FF;
  --muted:#8A9AB8;

  --font-display:"Archivo Narrow","Arial Narrow","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --shell:1360px;
  --gutter:clamp(1rem,3vw,2.5rem);
  --radius-soft:18px 18px 18px 6px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:0px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}

/* ---------- base ---------- */
body{
  min-height:100%;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:
    radial-gradient(1200px 620px at 78% -12%, rgba(34,230,216,.10), transparent 62%),
    radial-gradient(900px 520px at 4% 28%, rgba(255,92,43,.07), transparent 66%),
    var(--bg);
  background-attachment:fixed;
  overflow-x:hidden;
}
body[data-nav-open="true"]{overflow:hidden}
::selection{background:var(--cyan);color:#04222a}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;letter-spacing:-.02em;line-height:1.1}
p{max-width:38em}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  box-shadow:0 0 0 4px rgba(34,230,216,.22);
  border-radius:4px;
}

/* ---------- utilities ---------- */
.mono{font-family:var(--font-mono)}
.num{font-variant-numeric:tabular-nums;font-family:var(--font-mono)}
.text-muted{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:1rem;top:-120px;z-index:200;
  display:inline-block;padding:.6rem 1.1rem;
  background:var(--cyan);color:#04222a;font-weight:700;font-size:.9rem;
  border-radius:0 0 12px 12px;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

/* ============================================================
   双层头部
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg, rgba(6,10,22,.97), rgba(6,10,22,.88));
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--cyan) 0%, var(--orange) 58%, var(--lime) 100%);
  opacity:.9;
}
.header-inner{
  width:min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding-block:clamp(.6rem,1.4vw,1rem);
}

.utility-row{
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(.6rem,2vw,1.5rem);flex-wrap:wrap;
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:.7rem;min-width:0}
.brand-mark{
  flex:none;width:40px;height:40px;display:grid;place-items:center;
  border-radius:12px 12px 12px 4px;
  background:linear-gradient(140deg,var(--cyan),#0E8F8A);
  color:#03222a;font-family:var(--font-mono);font-weight:800;font-size:1.15rem;
  box-shadow:0 8px 24px -12px rgba(34,230,216,.85);
}
.brand-text{display:grid;gap:.1rem;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:1.12rem;letter-spacing:.02em;line-height:1.2}
.brand-line{font-size:.7rem;letter-spacing:.16em;color:var(--muted);line-height:1.3}

/* 工具区 */
.utility-tools{display:flex;align-items:center;gap:.65rem;flex-wrap:wrap}
.search-entry{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.45rem .8rem;min-width:min(320px,42vw);
  border:1px solid var(--line);border-radius:999px 999px 999px 6px;
  background:rgba(14,23,48,.75);
  color:var(--muted);font-size:.85rem;
  transition:border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.search-entry:hover{border-color:var(--cyan);color:var(--ink);background:rgba(11,59,69,.55)}
.search-entry-icon{
  flex:none;width:13px;height:13px;border:1.5px solid currentColor;border-radius:50%;
  position:relative;
}
.search-entry-icon::after{
  content:"";position:absolute;right:-4px;bottom:-3px;width:6px;height:1.5px;
  background:currentColor;transform:rotate(45deg);
}
.search-entry-text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search-entry-key{
  flex:none;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;
  color:var(--cyan);border-left:1px solid var(--line);padding-left:.55rem;
}
.header-contact{
  font-family:var(--font-mono);font-size:.76rem;color:var(--muted);
  letter-spacing:.06em;white-space:nowrap;
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.5rem .8rem;border:1px solid var(--line);
  border-radius:10px 10px 10px 3px;
  background:rgba(14,23,48,.85);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.12em;color:var(--ink);
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);background:rgba(11,59,69,.6)}
.nav-toggle-bars{display:grid;gap:4px;width:14px}
.nav-toggle-bar{display:block;height:1.5px;background:currentColor;border-radius:2px}
.nav-toggle-text{white-space:nowrap}

/* 主导航 */
.primary-nav{margin-top:clamp(.5rem,1.2vw,.85rem)}
.nav-list{
  display:flex;align-items:center;gap:.3rem;
  overflow-x:auto;padding-bottom:2px;
  scrollbar-width:thin;
}
.nav-list::-webkit-scrollbar{height:3px}
.nav-list::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.nav-item{flex:none}
.nav-link{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.5rem .9rem;white-space:nowrap;
  border:1px solid transparent;border-radius:10px 10px 10px 3px;
  color:var(--muted);font-size:.94rem;font-weight:500;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.nav-link:hover{color:var(--ink);border-color:var(--line);background:rgba(29,42,74,.42)}
.nav-idx{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;color:var(--cyan)}
.nav-link[aria-current="page"]{
  background:var(--cyan);border-color:var(--cyan);color:#04222a;font-weight:700;
  box-shadow:0 10px 26px -18px rgba(34,230,216,.95);
}
.nav-link[aria-current="page"] .nav-idx{color:#04222a;opacity:.75}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:clamp(3rem,7vw,6rem);
  border-top:1px solid var(--line);
  background:
    radial-gradient(900px 380px at 12% 0%, rgba(34,230,216,.10), transparent 70%),
    linear-gradient(180deg, rgba(11,18,38,.75), rgba(6,10,22,1));
}
.footer-inner{
  width:min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding:clamp(2rem,5vw,3.5rem) 0 1.5rem;
}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1.9fr);
  gap:clamp(1.5rem,4vw,3.5rem);
  padding-bottom:clamp(1.5rem,4vw,2.5rem);
  border-bottom:1px solid var(--line);
}
.footer-brand{display:grid;gap:.9rem;align-content:start}
.footer-tagline{
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.06em;
  color:var(--cyan);max-width:26em;line-height:1.7;
}
.footer-closing{color:var(--muted);font-size:.92rem;line-height:1.8;max-width:26em}

.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem}
.footer-col-title{
  font-family:var(--font-mono);font-size:.72rem;font-weight:600;
  letter-spacing:.2em;color:var(--cyan);margin-bottom:.85rem;
}
.footer-links{display:grid;gap:.45rem}
.footer-links a{
  display:inline-flex;align-items:center;gap:.5rem;
  color:var(--muted);font-size:.92rem;
  transition:color .2s var(--ease), transform .2s var(--ease);
}
.footer-links a::before{
  content:"";width:10px;height:1px;background:var(--line);
  transition:background .2s var(--ease), width .2s var(--ease);
}
.footer-links a:hover{color:var(--ink);transform:translateX(2px)}
.footer-links a:hover::before{background:var(--orange);width:16px}

.footer-contact{
  display:grid;gap:.5rem;
  padding-block:clamp(1.1rem,3vw,1.6rem);
  border-bottom:1px solid var(--line);
}
.contact-item{display:flex;flex-wrap:wrap;gap:.6rem;align-items:baseline;max-width:none}
.contact-label{
  flex:none;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.18em;
  color:var(--muted);
}
.contact-value{
  font-family:var(--font-mono);font-size:.9rem;color:var(--ink);
  word-break:break-all;
}
.footer-service{
  padding-top:1rem;color:var(--muted);font-size:.82rem;line-height:1.8;max-width:52em;
}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.75rem 1.5rem;
  margin-top:clamp(1rem,2.5vw,1.5rem);
  padding-top:1rem;border-top:1px dashed var(--line);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;color:var(--muted);
}
.legal-brand{max-width:none}
.legal-links{display:flex;flex-wrap:wrap;gap:.85rem;max-width:none}
.legal-links a{color:var(--muted);transition:color .2s var(--ease)}
.legal-links a:hover{color:var(--cyan)}

/* ============================================================
   骨架：非对称分栏
   ============================================================ */
.shell{
  width:min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,10fr);
  gap:clamp(1.25rem,3vw,3rem);
  align-items:start;
  padding-block:clamp(1.5rem,4vw,3rem);
}
.content{min-width:0}

.rail{
  position:sticky;
  top:calc(var(--header-h) + 1.25rem);
  display:grid;gap:.75rem;
  padding:1rem;
  border:1px solid var(--line);
  border-radius:var(--radius-soft);
  background:linear-gradient(165deg, rgba(14,23,48,.94), rgba(8,13,28,.78));
}
.rail-title{
  font-family:var(--font-mono);font-size:.7rem;font-weight:600;
  letter-spacing:.2em;color:var(--cyan);
}
.rail-list{display:grid;gap:.2rem}
.rail-link{
  display:flex;align-items:center;justify-content:space-between;gap:.6rem;
  padding:.45rem .55rem;
  border-left:2px solid transparent;border-radius:8px 8px 8px 3px;
  color:var(--muted);font-size:.88rem;
  transition:color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.rail-link .mono,.rail-link .num{color:var(--cyan);font-size:.78rem}
.rail-link:hover{color:var(--ink);background:rgba(29,42,74,.45);border-left-color:var(--orange)}
.rail-link[aria-current="true"],
.rail-link[aria-current="page"]{color:var(--ink);border-left-color:var(--cyan);background:rgba(11,59,69,.55)}

/* ============================================================
   章节与栅格
   ============================================================ */
.section{padding-block:clamp(1.75rem,4vw,3rem)}
.section-head{display:grid;gap:.6rem;margin-bottom:clamp(1rem,2.5vw,1.75rem);max-width:52em}
.section-kicker{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;
  color:var(--orange);
}
.section-title{font-size:clamp(1.6rem,3.6vw,2.6rem)}
.section-lede{color:var(--muted);font-size:.98rem}

.grid-2,.grid-3,.grid-4{display:grid;gap:clamp(.85rem,2vw,1.4rem)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.badge-index{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;color:var(--cyan);
}
.badge-index::before{content:"";width:18px;height:1px;background:currentColor}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.08em;color:var(--muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:.5rem}
.breadcrumb li::after{content:"/";color:var(--line)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a:hover{color:var(--cyan)}

/* ============================================================
   档案组件
   ============================================================ */
.card{
  position:relative;
  display:grid;gap:.7rem;
  padding:clamp(1rem,2vw,1.4rem);
  border:1px solid var(--line);
  border-radius:var(--radius-soft);
  background:linear-gradient(160deg, rgba(14,23,48,.96), rgba(11,18,38,.82));
  transition:transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--cyan);
  box-shadow:0 20px 44px -28px rgba(34,230,216,.9);
}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap}
.card-meta{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;color:var(--muted);
}
.card-title{font-size:clamp(1.05rem,1.9vw,1.35rem);line-height:1.25}
.card-text{color:var(--muted);font-size:.93rem;line-height:1.8}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;
  padding-top:.6rem;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.06em;
}

.panel{
  position:relative;
  padding:clamp(1.25rem,3vw,2.25rem);
  border:1px solid var(--line);
  border-radius:22px 22px 22px 8px;
  background:
    radial-gradient(700px 260px at 88% -20%, rgba(34,230,216,.14), transparent 70%),
    linear-gradient(150deg, rgba(22,41,92,.55), rgba(9,15,32,.94));
  overflow:hidden;
}
.panel::after{
  content:"";position:absolute;inset:auto 0 0 0;height:2px;
  background:linear-gradient(90deg,transparent,var(--cyan),var(--orange),transparent);
  opacity:.7;
}

.stat{
  display:grid;gap:.2rem;
  padding:.85rem 1rem;
  border:1px solid var(--line);border-radius:14px 14px 14px 4px;
  background:linear-gradient(150deg, rgba(14,23,48,.95), rgba(11,18,38,.72));
}
.stat-value{
  font-family:var(--font-mono);font-weight:700;line-height:1.1;
  font-size:clamp(1.35rem,3vw,2.1rem);
  font-variant-numeric:tabular-nums;color:var(--cyan);
}
.stat[data-tone="orange"] .stat-value{color:var(--orange)}
.stat[data-tone="lime"] .stat-value{color:var(--lime)}
.stat-label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;color:var(--muted)}

.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.22rem .6rem;border:1px solid var(--line);border-radius:999px;
  background:rgba(14,23,48,.85);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--muted);
}
.tag--cyan{border-color:rgba(34,230,216,.45);color:var(--cyan);background:rgba(34,230,216,.1)}
.tag--orange{border-color:rgba(255,92,43,.45);color:var(--orange);background:rgba(255,92,43,.1)}
.tag--lime{border-color:rgba(198,255,74,.4);color:var(--lime);background:rgba(198,255,74,.1)}
.tag-list{display:flex;flex-wrap:wrap;gap:.4rem}

.data-table{width:100%;font-size:.9rem}
.data-table caption{
  text-align:left;padding-bottom:.6rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;color:var(--muted);
}
.data-table th,.data-table td{padding:.6rem .7rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.data-table th{font-size:.76rem;font-weight:600;letter-spacing:.1em;color:var(--muted)}
.data-table tbody tr{transition:background .2s var(--ease)}
.data-table tbody tr:hover{background:rgba(29,42,74,.4)}

.timeline{
  position:relative;display:grid;gap:1rem;
  padding-left:1.5rem;border-left:1px solid var(--line);
}
.timeline-item{position:relative}
.timeline-item::before{
  content:"";position:absolute;left:-1.5rem;top:.6rem;
  width:10px;height:10px;margin-left:-5.5px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(34,230,216,.16);
}
.timeline-item[data-tone="orange"]::before{background:var(--orange);box-shadow:0 0 0 3px rgba(255,92,43,.16)}
.timeline-item[data-tone="lime"]::before{background:var(--lime);box-shadow:0 0 0 3px rgba(198,255,74,.16)}
.timeline-time{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--muted)}

.fold{
  border:1px solid var(--line);border-radius:14px 14px 14px 4px;
  background:rgba(14,23,48,.62);overflow:hidden;
}
.fold + .fold{margin-top:.6rem}
.fold summary{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.85rem 1.1rem;font-weight:600;font-size:.96rem;
  cursor:pointer;list-style:none;
  transition:color .2s var(--ease), background .2s var(--ease);
}
.fold summary::-webkit-details-marker{display:none}
.fold summary::after{content:"+";font-family:var(--font-mono);color:var(--cyan);font-size:1.1rem}
.fold[open] summary::after{content:"–"}
.fold summary:hover{color:var(--cyan);background:rgba(29,42,74,.35)}
.fold-body{padding:0 1.1rem 1.1rem;color:var(--muted);font-size:.92rem;line-height:1.8}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.7rem 1.15rem;
  border:1px solid var(--line);border-radius:12px 12px 12px 4px;
  font-size:.92rem;font-weight:600;color:var(--ink);
  transition:transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--cyan)}
.btn--primary{
  background:linear-gradient(135deg,var(--orange),#FF8A3D);
  border-color:transparent;color:#210A02;
}
.btn--primary:hover{box-shadow:0 16px 32px -18px rgba(255,92,43,.95)}
.btn--ghost{
  background:rgba(34,230,216,.08);
  border-color:rgba(34,230,216,.4);color:var(--cyan);
}
.btn--ghost:hover{background:rgba(34,230,216,.16)}
.btn--sm{padding:.45rem .8rem;font-size:.8rem;border-radius:10px 10px 10px 3px}

/* 复制字段 */
.copy-field{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem;
  padding:.7rem .9rem;
  border:1px dashed var(--line);border-radius:12px 12px 12px 4px;
  background:rgba(11,18,38,.7);
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.copy-field.is-copied{border-color:var(--cyan);background:rgba(11,59,69,.55)}
.copy-value{font-family:var(--font-mono);font-size:.88rem;word-break:break-all}
.copy-feedback{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--muted)}
.copy-field.is-copied .copy-feedback{color:var(--cyan)}

/* 媒体容器 */
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:20px 20px 20px 8px;
  aspect-ratio:16 / 9;
  background:
    linear-gradient(135deg, rgba(22,41,92,.55), rgba(6,10,22,.92)),
    repeating-linear-gradient(90deg, rgba(29,42,74,.55) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(0deg, rgba(29,42,74,.55) 0 1px, transparent 1px 46px);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame__cap{
  position:absolute;left:.75rem;bottom:.7rem;
  padding:.22rem .55rem;border-radius:999px;
  background:rgba(6,10,22,.82);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;color:var(--cyan);
}

/* ============================================================
   全站注入元素
   ============================================================ */
.scroll-progress{
  position:fixed;left:0;top:0;z-index:120;width:100%;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange) 70%,var(--lime));
  pointer-events:none;
}
.to-top{
  position:fixed;right:clamp(.75rem,2vw,1.5rem);bottom:clamp(.75rem,2vw,1.5rem);z-index:80;
  width:44px;height:44px;display:grid;place-items:center;
  border:1px solid rgba(34,230,216,.45);border-radius:14px 14px 14px 4px;
  background:rgba(11,18,38,.92);color:var(--cyan);
  font-family:var(--font-mono);font-size:1.05rem;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s var(--ease), transform .2s var(--ease), visibility .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}

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

/* 标签面板 */
[data-tab-panel][hidden]{display:none}
[data-tab]{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.42rem .85rem;border:1px solid var(--line);border-radius:999px;
  background:rgba(14,23,48,.8);color:var(--muted);
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.08em;
  transition:color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
[data-tab]:hover{color:var(--ink);border-color:var(--cyan)}
[data-tab][aria-selected="true"]{
  background:var(--cyan);border-color:var(--cyan);color:#04222a;font-weight:700;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1200px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .shell{grid-template-columns:minmax(0,1fr);gap:1.25rem}
  .content{order:2}
  .rail{
    position:static;order:1;
    display:flex;align-items:center;gap:.6rem;
    overflow-x:auto;padding:.7rem .85rem;
    scrollbar-width:thin;
  }
  .rail-title{flex:none;padding-right:.6rem;border-right:1px solid var(--line)}
  .rail-list{display:flex;gap:.4rem}
  .rail-link{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;padding:.35rem .6rem}
  .rail-link:hover{border-left:0;border-bottom-color:var(--orange)}
  .rail-link[aria-current="true"],.rail-link[aria-current="page"]{border-left:0;border-bottom-color:var(--cyan)}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .header-contact{display:none}
  .search-entry{min-width:0;flex:1 1 180px}
  .primary-nav{display:none;margin-top:.7rem;padding-top:.7rem;border-top:1px solid var(--line)}
  .site-header[data-open="true"] .primary-nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:.25rem;overflow:visible;max-height:min(64vh,520px);overflow-y:auto}
  .nav-link{width:100%;justify-content:space-between;padding:.75rem .9rem}
  .footer-top{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-legal{justify-content:flex-start}
}
@media (max-width:520px){
  .search-entry-text{font-size:.8rem}
  .search-entry-key{display:none}
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .brand-line{display:none}
}

/* ============================================================
   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 !important;transform:none !important}
  .card:hover,.btn:hover,.footer-links a:hover{transform:none}
}