/* ==========================================================================
   6米乐赛事 · 共享样式表 /assets/site.css
   暗夜体育数据台：夜场墨黑 + 荧光青引导线 + 暖橙比分锚点
   ========================================================================== */

/* ---------- 01 · 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,li,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--crease);margin:0}
:target{scroll-margin-top:140px}

/* ---------- 02 · 变量 ---------- */
:root{
  --ink-black:#080D0B;
  --deep-green:#0E241C;
  --pitch-green:#143026;
  --crease:#1E4034;
  --neon-cyan:#35F2D0;
  --warm-orange:#FF8A3D;
  --paper:#F2EFE6;
  --chalk:#F7FAF9;
  --mist:#9AA8A3;
  --signal:#C9F24A;
  --on-paper:#10241C;
  --body-dim:#C6D2CE;

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

  --max-width:1280px;
  --gutter:24px;
  --gap:24px;
  --radius:2px;
  --dur:180ms;
  --ease:ease-out;
}

/* ---------- 03 · 基础与中文排版 ---------- */
body{
  background:var(--ink-black);
  color:var(--chalk);
  font-family:var(--font-mono);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
main{display:block;background:var(--ink-black)}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.14;
  color:var(--chalk);
  text-wrap:balance;
}
h1{font-size:clamp(34px,5.6vw,72px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:clamp(17px,1.6vw,20px);line-height:1.35}
p{text-wrap:pretty}
strong,b{font-weight:800;color:var(--chalk)}
small{font-size:13px;color:var(--mist)}

::selection{background:var(--neon-cyan);color:#04120E}
:focus-visible{outline:2px solid var(--neon-cyan);outline-offset:3px;border-radius:var(--radius)}

.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;
}

/* 跳过链接 */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:120;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;
  background:var(--neon-cyan);color:#04120E;
  font-family:var(--font-display);font-weight:900;font-size:14px;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 04 · 容器 / 栅格 / 分区 ---------- */
.container{
  width:100%;max-width:var(--max-width);
  margin-inline:auto;padding-inline:var(--gutter);
}
.container--narrow{max-width:860px}

.section{position:relative;padding:88px 0}
.section--tight{padding:56px 0}
.section--paper{
  background:var(--deep-green);
  border-block:1px solid var(--crease);
}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;
  justify-content:space-between;gap:20px;margin-bottom:40px;
}
.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(--neon-cyan);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--neon-cyan)}
.section-title{max-width:22ch}
.lead{
  font-family:var(--font-mono);font-size:17px;line-height:1.75;
  color:var(--body-dim);max-width:62ch;
}

.split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:start}
.split--wide{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.split--reverse{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

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

.card-flow{column-gap:var(--gap)}
.card-flow > *{break-inside:avoid;margin-bottom:var(--gap)}

.rail{
  font-family:var(--font-mono);font-size:13px;line-height:1.7;
  color:var(--mist);border-left:1px solid var(--crease);padding-left:18px;
}
.rail-title{
  display:block;font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--neon-cyan);margin-bottom:10px;
}

.field-grid{position:relative}
.field-grid::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg,rgba(30,64,52,.32) 0 1px,transparent 1px 96px),
    repeating-linear-gradient(90deg,rgba(30,64,52,.32) 0 1px,transparent 1px 96px);
  opacity:.6;
}

/* ---------- 05 · 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,13,11,.94);
  border-bottom:1px solid var(--crease);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.header-rail{position:relative;border-bottom:1px solid rgba(30,64,52,.7)}

.header-inner{
  width:100%;max-width:var(--max-width);margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex;align-items:center;gap:20px;min-height:76px;
}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;padding-block:8px}
.brand-mark{
  position:relative;display:block;flex:0 0 auto;
  width:34px;height:34px;
  border:2px solid var(--neon-cyan);
}
.brand-mark::before{
  content:"";position:absolute;inset:7px;
  border:1px solid rgba(53,242,208,.55);
}
.brand-mark::after{
  content:"";position:absolute;right:-5px;bottom:-5px;
  width:8px;height:8px;background:var(--neon-cyan);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{
  font-family:var(--font-display);font-weight:900;font-size:20px;
  letter-spacing:-.02em;color:var(--chalk);
}
.brand-year{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);
}
.brand-year-value{color:var(--neon-cyan)}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;
  font-family:var(--font-display);font-weight:700;font-size:15px;
  letter-spacing:.01em;color:var(--mist);
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--neon-cyan);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--chalk)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--neon-cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--warm-orange)}

.enter-capsule{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  margin-left:18px;padding:10px 18px;border-radius:999px;
  background:var(--neon-cyan);color:#04120E;
  font-family:var(--font-display);font-weight:900;font-size:14px;letter-spacing:.02em;
  box-shadow:0 10px 26px -14px rgba(53,242,208,.9);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.enter-capsule:hover{transform:translateY(-2px);background:var(--chalk);box-shadow:0 16px 32px -16px rgba(53,242,208,.95)}
.capsule-dot{width:7px;height:7px;border-radius:50%;background:#04120E;box-shadow:0 0 0 4px rgba(4,18,14,.14)}

.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:10px 14px;border:1px solid var(--crease);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--chalk);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--neon-cyan);color:var(--neon-cyan)}
.nav-toggle-bars{position:relative;display:block;width:18px;height:2px;background:var(--neon-cyan);transition:background-color var(--dur) var(--ease)}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--neon-cyan);
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.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)}

.status-strip{background:var(--deep-green);border-bottom:1px solid var(--crease)}
.status-inner{
  min-height:34px;gap:10px;justify-content:flex-start;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:var(--mist);padding-block:4px;
}
.status-pulse{
  width:8px;height:8px;border-radius:50%;background:var(--signal);
  animation:status-pulse 2.4s var(--ease) infinite;
}
@keyframes status-pulse{
  0%{box-shadow:0 0 0 0 rgba(201,242,74,.55)}
  70%{box-shadow:0 0 0 9px rgba(201,242,74,0)}
  100%{box-shadow:0 0 0 0 rgba(201,242,74,0)}
}
.status-text{white-space:nowrap}
.status-sep{color:var(--crease)}
.status-time{margin-left:auto;color:var(--mist)}
.status-time time{color:var(--chalk);font-variant-numeric:tabular-nums}

.scroll-meter{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  z-index:2;pointer-events:none;
}
.scroll-meter__fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--neon-cyan),var(--warm-orange));
  transition:width .1s linear;
}

/* ---------- 06 · 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--ink-black);color:var(--chalk);
  border-top:1px solid var(--crease);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto;height:280px;pointer-events:none;
  background:linear-gradient(180deg,rgba(14,36,28,.95),rgba(8,13,11,0));
}
.footer-inner{
  position:relative;width:100%;max-width:var(--max-width);
  margin-inline:auto;padding:56px var(--gutter) 0;
}
.footer-top{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:24px;padding-bottom:28px;border-bottom:1px solid var(--crease);
}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand-text{display:flex;flex-direction:column;gap:4px}
.footer-tagline{
  font-family:var(--font-display);font-weight:900;font-size:22px;
  letter-spacing:-.02em;color:var(--chalk);
}
.footer-sub{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);
}
.footer-kicker{
  font-family:var(--font-mono);font-size:14px;line-height:1.7;
  color:var(--mist);max-width:34ch;
}

.footer-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:32px 28px;padding:40px 0 44px;
}
.footer-col-title{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.16em;color:var(--neon-cyan);margin-bottom:16px;
}
.footer-col-title::before{content:"";width:14px;height:1px;background:var(--neon-cyan)}
.footer-list{display:grid;gap:10px}
.footer-link{
  display:inline-block;font-family:var(--font-mono);font-size:14px;
  color:var(--body-dim);
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.footer-link:hover{color:var(--neon-cyan);padding-left:6px}

.footer-contact{display:grid;gap:14px;font-family:var(--font-mono);font-size:14px}
.contact-line{display:grid;gap:2px}
.contact-label{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist)}
.contact-value{color:var(--chalk);word-break:break-word}
.contact-note{
  margin-top:12px;font-family:var(--font-mono);font-size:12.5px;
  line-height:1.7;color:var(--mist);
}
.footer-legal{
  font-family:var(--font-mono);font-size:14px;letter-spacing:.04em;
  color:var(--chalk);word-break:break-all;
}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;padding:20px 0 34px;border-top:1px solid var(--crease);
}
.footer-copy{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;
  color:var(--mist);
}
.footer-top-btn{
  padding:8px 16px;border:1px solid var(--crease);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--mist);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-top-btn:hover{color:var(--neon-cyan);border-color:var(--neon-cyan);transform:translateY(-2px)}

/* ---------- 07 · 按钮 / 链接 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 22px;border:1px solid var(--crease);
  background:var(--pitch-green);color:var(--chalk);
  font-family:var(--font-display);font-weight:800;font-size:15px;letter-spacing:.01em;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--neon-cyan);box-shadow:0 14px 30px -18px rgba(53,242,208,.6)}
.btn--primary{background:var(--neon-cyan);border-color:var(--neon-cyan);color:#04120E}
.btn--primary:hover{background:var(--chalk);border-color:var(--chalk)}
.btn--orange{background:var(--warm-orange);border-color:var(--warm-orange);color:#1A0C02}
.btn--ghost{background:transparent;border-color:rgba(53,242,208,.5);color:var(--neon-cyan)}
.btn--block{width:100%;justify-content:center}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:14px;color:var(--neon-cyan);
  border-bottom:1px solid rgba(53,242,208,.4);
  transition:gap var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.link-arrow::after{content:"→"}
.link-arrow:hover{gap:14px;color:var(--chalk);border-color:var(--warm-orange)}

/* ---------- 08 · 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--crease);
  background:rgba(20,48,38,.6);color:var(--mist);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tag:hover{background:var(--neon-cyan);border-color:var(--neon-cyan);color:#04120E}
.tag--cyan{border-color:var(--neon-cyan);color:var(--neon-cyan)}
.tag--orange{border-color:var(--warm-orange);color:var(--warm-orange)}
.tag--signal{border-color:var(--signal);color:var(--signal)}

/* ---------- 09 · 档案卡 / 纸张叠层 ---------- */
.archive-card{
  position:relative;display:block;
  padding:24px 22px;
  background:var(--pitch-green);
  border:1px solid var(--crease);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.archive-card::before{
  content:"";position:absolute;top:0;right:0;width:22px;height:22px;
  background:linear-gradient(225deg,var(--ink-black) 0 50%,var(--crease) 50% 100%);
}
.archive-card:hover,
.archive-card:focus-within{
  transform:translateY(-3px);
  border-color:var(--neon-cyan);
  box-shadow:0 22px 44px -26px rgba(0,0,0,.95);
}
.archive-card__index{
  display:block;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.14em;color:var(--neon-cyan);margin-bottom:12px;
}
.archive-card__title{
  font-family:var(--font-display);font-weight:900;font-size:20px;
  line-height:1.3;letter-spacing:-.01em;color:var(--chalk);
}
.archive-card__meta{
  display:block;margin-top:10px;font-family:var(--font-mono);
  font-size:13px;color:var(--mist);
}
.archive-card__note{
  overflow:hidden;max-height:0;opacity:0;margin-top:0;
  font-family:var(--font-mono);font-size:13.5px;line-height:1.7;color:var(--body-dim);
  transition:max-height 220ms var(--ease),opacity 220ms var(--ease),margin-top 220ms var(--ease);
}
.archive-card:hover .archive-card__note,
.archive-card:focus-within .archive-card__note{max-height:220px;opacity:1;margin-top:12px}
.archive-card--paper{background:var(--paper);border-color:#D8D2C2;color:var(--on-paper)}
.archive-card--paper .archive-card__title{color:var(--on-paper)}
.archive-card--paper .archive-card__index{color:#0B5B4A}
.archive-card--paper .archive-card__meta,
.archive-card--paper .archive-card__note{color:#4A5A52}

.paper-stack{position:relative;isolation:isolate}
.paper-stack::before{
  content:"";position:absolute;inset:0;translate:8px 8px;
  background:var(--deep-green);border:1px solid var(--crease);z-index:-1;
}
.paper-stack::after{
  content:"";position:absolute;inset:0;translate:16px 16px;
  background:var(--pitch-green);border:1px solid var(--crease);z-index:-2;
}
.paper-stack > *{position:relative;z-index:1}
.paper-sheet{
  position:relative;padding:28px;
  background:var(--paper);color:var(--on-paper);
  font-family:var(--font-mono);font-size:15px;line-height:1.7;
}

/* ---------- 10 · 数据组件 ---------- */
.score-num{
  display:block;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(48px,9vw,120px);
  line-height:.92;letter-spacing:-.04em;
  color:var(--warm-orange);
  font-variant-numeric:tabular-nums;
}
.score-num--cyan{color:var(--neon-cyan)}

.stat-block{
  padding:20px;
  background:linear-gradient(180deg,rgba(20,48,38,.9),rgba(14,36,28,.62));
  border:1px solid var(--crease);
}
.stat-label{
  display:block;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--mist);
}
.stat-value{
  display:block;margin-top:8px;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(30px,4vw,48px);line-height:1;letter-spacing:-.03em;
  color:var(--chalk);font-variant-numeric:tabular-nums;
}
.stat-value--cyan{color:var(--neon-cyan)}
.stat-value--orange{color:var(--warm-orange)}
.stat-delta{
  display:block;margin-top:8px;font-family:var(--font-mono);
  font-size:13px;color:var(--signal);
}
.data-bar{
  position:relative;height:6px;overflow:hidden;
  background:var(--pitch-green);border:1px solid var(--crease);
}
.data-bar__fill{
  display:block;height:100%;
  width:calc(var(--value,0) * 1%);
  background:linear-gradient(90deg,var(--neon-cyan),var(--signal));
}

.stack-list{display:grid;border-top:1px solid var(--crease)}
.stack-item{
  display:grid;grid-template-columns:64px minmax(0,1fr) auto;
  gap:18px;align-items:baseline;
  padding:18px 8px;border-bottom:1px solid var(--crease);
  transition:background-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.stack-item:hover,.stack-item:focus-within{background:rgba(20,48,38,.72);padding-left:16px}
.stack-index{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--neon-cyan);font-variant-numeric:tabular-nums;
}
.stack-main{
  font-family:var(--font-display);font-weight:800;font-size:17px;
  line-height:1.35;letter-spacing:-.01em;color:var(--chalk);
}
.stack-meta{font-family:var(--font-mono);font-size:13px;color:var(--mist);text-align:right}

.timeline{position:relative;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;
  width:1px;background:var(--crease);
}
.timeline-item{position:relative;padding-bottom:28px}
.timeline-node{
  position:absolute;left:-28px;top:5px;
  width:13px;height:13px;border-radius:50%;
  border:2px solid var(--neon-cyan);background:var(--ink-black);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.timeline-item:hover .timeline-node,
.timeline-item:focus-within .timeline-node{transform:scale(1.15);background:var(--neon-cyan)}
.timeline-item[data-current="true"] .timeline-node{background:var(--signal);border-color:var(--signal)}
.timeline-title{
  font-family:var(--font-display);font-weight:800;font-size:17px;
  letter-spacing:-.01em;color:var(--chalk);
}
.timeline-meta{font-family:var(--font-mono);font-size:13px;color:var(--mist)}
.timeline-summary{
  overflow:hidden;max-height:0;opacity:0;
  font-family:var(--font-mono);font-size:13px;line-height:1.7;color:var(--body-dim);
  transition:max-height 220ms var(--ease),opacity 220ms var(--ease),margin-top 220ms var(--ease);
}
.timeline-item:hover .timeline-summary,
.timeline-item:focus-within .timeline-summary{max-height:160px;opacity:1;margin-top:8px}

/* ---------- 11 · 纯 CSS 筛选 ---------- */
.filter-set{display:flex;flex-wrap:wrap;gap:10px}
.filter-set input{
  position:absolute;width:1px;height:1px;opacity:0;pointer-events:none;
}
.filter-set label{
  display:inline-flex;align-items:center;
  padding:7px 14px;border:1px solid var(--crease);
  background:rgba(20,48,38,.6);color:var(--mist);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.filter-set label:hover{border-color:var(--neon-cyan);color:var(--chalk)}
.filter-set input:checked + label{
  background:var(--neon-cyan);border-color:var(--neon-cyan);color:#04120E;
}
.filter-set input:focus-visible + label{outline:2px solid var(--neon-cyan);outline-offset:2px}

/* ---------- 12 · 图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  background:var(--deep-green);border:1px solid var(--crease);
}
.media-frame img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.85) contrast(1.05) brightness(.82);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(53,242,208,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,242,208,.08) 1px,transparent 1px);
  background-size:48px 48px;
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--bleed{aspect-ratio:21/9}
.media-caption{
  margin-top:10px;font-family:var(--font-mono);font-size:13px;
  line-height:1.6;color:var(--mist);
}

/* ---------- 13 · 面包屑 / 正文 ---------- */
.breadcrumbs{
  padding:22px 0;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;color:var(--mist);
}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"/";color:var(--crease)}
.breadcrumbs a{transition:color var(--dur) var(--ease)}
.breadcrumbs a:hover{color:var(--neon-cyan)}
.breadcrumbs [aria-current="page"]{color:var(--chalk)}

.prose{
  font-family:var(--font-mono);font-size:17px;line-height:1.75;
  color:var(--body-dim);max-width:72ch;
}
.prose > * + *{margin-top:1.15em}
.prose h2,.prose h3{color:var(--chalk);margin-top:1.6em}
.prose a{color:var(--neon-cyan);border-bottom:1px solid rgba(53,242,208,.4)}
.prose a:hover{border-color:var(--warm-orange)}
.prose li{position:relative;padding-left:20px}
.prose li + li{margin-top:.5em}
.prose li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:2px;background:var(--neon-cyan);
}
.prose blockquote{
  border-left:2px solid var(--neon-cyan);
  padding-left:20px;color:var(--chalk);
}

/* ---------- 14 · 显现 / 动效 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 15 · 响应式 ---------- */
@media (max-width:1080px){
  .nav-link{padding:10px 10px;font-size:14px}
  .split,.split--wide,.split--reverse{gap:40px}
}

@media (max-width:940px){
  .site-header{position:sticky}
  .header-inner{min-height:64px;flex-wrap:nowrap}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;z-index:5;
    display:none;flex-direction:column;align-items:stretch;
    margin-left:0;padding:10px var(--gutter) 20px;
    background:var(--deep-green);
    border-bottom:1px solid var(--crease);
    box-shadow:0 26px 44px -30px rgba(0,0,0,.95);
  }
  .site-nav[data-open="true"]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{display:block;padding:14px 4px;font-size:16px;border-bottom:1px solid rgba(30,64,52,.7)}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{padding-left:14px;box-shadow:inset 2px 0 0 var(--warm-orange)}
  .enter-capsule{margin-left:12px;padding:9px 16px;font-size:13px}
  .status-time{margin-left:0}
  .split,.split--wide,.split--reverse{grid-template-columns:minmax(0,1fr);gap:32px}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9{grid-column:span 6}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:620px){
  :root{--gutter:16px;--gap:18px}
  body{font-size:16px}
  .brand-mark{width:30px;height:30px}
  .brand-name{font-size:18px}
  .brand-year{display:none}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9{grid-column:span 12}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding:32px 0 36px}
  .footer-inner{padding-top:44px}
  .footer-top{align-items:flex-start}
  .stack-item{grid-template-columns:52px minmax(0,1fr);gap:12px}
  .stack-meta{grid-column:2;text-align:left}
  .telemetry,.media-frame--bleed{aspect-ratio:16/9}
}

@media (max-width:560px){
  .nav-toggle-label{display:none}
  .enter-capsule{padding:8px 12px;font-size:12px}
  .capsule-dot{display:none}
  .status-sep{display:none}
  .section{padding:52px 0}
}

@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}
  .scroll-meter__fill{transition:none}
}