/* ============================================================
   888棋牌游 · 共享样式表 /assets/site.css
   赛博棋牌档案室：深墨底 + 电光青索引轴 + 段位金等宽数据
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  /* 色彩 */
  --ink:#06110F;
  --ink-2:#0C1A17;
  --card:#12261F;
  --white:#E8F3EE;
  --mist:#9FB8AE;
  --mist-dim:#6E8A7F;
  --cyan:#22E0C8;
  --cyan-soft:rgba(34,224,200,.14);
  --orange:#FF7A2F;
  --gold:#E9C46A;
  --line:#1E3A33;
  --paper:#F4F7F5;
  --paper-ink:#12261F;

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

  /* 字号 */
  --fs-display:clamp(2.25rem,4.6vw,3.5rem);
  --fs-h2:clamp(1.625rem,2.6vw,2rem);
  --fs-h3:1.25rem;
  --fs-body:1rem;
  --fs-sm:.875rem;
  --fs-note:.8125rem;
  --fs-mono:.8125rem;

  /* 布局 */
  --rail-w:264px;
  --bar-h:64px;
  --gutter:clamp(1.125rem,3.4vw,3rem);
  --maxw:1160px;
  --measure:36em;

  /* 形状 */
  --r-sm:4px;
  --r-md:10px;
  --r-lg:18px;
  --r-pill:999px;

  /* 动效 */
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:160ms;

  --shadow-card:0 20px 40px -28px rgba(0,0,0,.95);
  --shadow-pop:0 28px 60px -24px rgba(0,0,0,.9);
  --focus-ring:0 0 0 2px var(--ink),0 0 0 4px var(--cyan),0 0 0 8px rgba(34,224,200,.18);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol,dl,dd,pre{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;height:auto}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  padding-top:var(--bar-h);
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  font-weight:400;
  line-height:1.75;
  color:var(--white);
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 520px at 78% -12%,rgba(34,224,200,.10),transparent 68%),
    radial-gradient(640px 420px at -8% 92%,rgba(255,122,47,.06),transparent 72%),
    repeating-linear-gradient(0deg,rgba(30,58,51,.55) 0 1px,transparent 1px 72px),
    repeating-linear-gradient(90deg,rgba(30,58,51,.55) 0 1px,transparent 1px 72px);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--white)}
h1{font-size:var(--fs-display)}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3);letter-spacing:-.01em}
h4{font-size:1rem;letter-spacing:0}

p{max-width:var(--measure)}
p+p{margin-top:1em}

a{color:var(--cyan);text-decoration-thickness:1px;text-underline-offset:.18em}
a:hover{color:#5CF3E0}

strong,b{font-weight:700;color:var(--white)}
small{font-size:var(--fs-note);color:var(--mist)}

::selection{background:rgba(34,224,200,.28);color:var(--white)}

/* ---------- 4. 通用工具 ---------- */
.mono{
  font-family:var(--font-mono);
  font-size:var(--fs-mono);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--gold);
}
[data-copy]{cursor:copy;border-radius:2px;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
[data-copy]:hover{background:rgba(34,224,200,.10)}
[data-copy].is-copied{color:var(--orange);background:rgba(255,122,47,.14)}

.kbd{
  display:inline-block;
  padding:.1em .45em;
  border:1px solid var(--line);
  border-bottom-width:2px;
  border-radius:var(--r-sm);
  background:var(--ink-2);
  font-family:var(--font-mono);
  font-size:.75rem;
  color:var(--mist);
  line-height:1.4;
}

.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:0 auto;
  padding-inline:var(--gutter);
}

.prose{max-width:var(--measure)}
.prose p,.prose li{color:var(--white)}
.prose ul,.prose ol{list-style:disc;padding-left:1.25em;margin:1em 0}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.4em}
.prose h2{margin-top:2.2em;margin-bottom:.6em}
.prose h3{margin-top:1.6em;margin-bottom:.5em}
.prose a{text-decoration:underline}

.prose--paper{
  background:var(--paper);
  color:var(--paper-ink);
  border-radius:var(--r-md);
  padding:clamp(1.25rem,3vw,2.5rem);
  max-width:none;
}
.prose--paper p,.prose--paper li,.prose--paper h2,.prose--paper h3{color:var(--paper-ink)}
.prose--paper a{color:#0B7C6E}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.72rem 1.3rem;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  font-family:var(--font-sans);
  font-size:.9375rem;
  font-weight:600;
  line-height:1.2;
  letter-spacing:.01em;
  text-align:center;
  text-decoration:none;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn--primary{
  background:var(--cyan);
  color:#04211C;
  box-shadow:0 12px 26px -16px rgba(34,224,200,.95);
}
.btn--primary:hover{background:#4DEFD8;color:#04211C;transform:translateY(-2px)}
.btn--ghost{
  background:rgba(18,38,31,.35);
  border-color:var(--line);
  color:var(--white);
}
.btn--ghost:hover{border-color:rgba(34,224,200,.6);color:var(--cyan);transform:translateY(-2px)}
.btn--orange{
  background:var(--orange);
  color:#1A0A02;
  box-shadow:0 12px 26px -16px rgba(255,122,47,.9);
}
.btn--orange:hover{background:#FF9152;color:#1A0A02;transform:translateY(-2px)}
.btn--block{width:100%}
.btn--sm{padding:.5rem .95rem;font-size:var(--fs-sm)}

/* ---------- 6. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:400;
  display:inline-block;
  padding:.7rem 1.15rem;
  border-radius:var(--r-sm);
  background:var(--cyan);
  color:#04211C;
  font-weight:700;
  text-decoration:none;
  box-shadow:var(--shadow-pop);
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:14px;color:#04211C}

/* ============================================================
   7. 页头 —— 桌面端固定左轨道 / 移动端顶部条 + 抽屉
   ============================================================ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  height:var(--bar-h);
  background:linear-gradient(180deg,rgba(12,26,23,.97),rgba(8,21,15,.97));
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 40px -32px rgba(0,0,0,1);
}

.site-header__bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  height:100%;
  padding:0 14px;
}

/* --- 品牌 --- */
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  text-decoration:none;
  color:var(--white);
}
.brand__mark{
  display:grid;
  place-items:center;
  min-width:46px;
  height:34px;
  padding:0 7px;
  border:1px solid rgba(233,196,106,.5);
  border-radius:8px;
  background:
    linear-gradient(135deg,rgba(233,196,106,.18),rgba(34,224,200,.10)),
    var(--ink);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.55),0 8px 18px -12px rgba(34,224,200,.9);
}
.brand__body{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.2;
  color:var(--white);
  white-space:nowrap;
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:.625rem;
  letter-spacing:.12em;
  line-height:1.4;
  color:var(--mist);
  white-space:nowrap;
}
.brand:hover .brand__name{color:var(--cyan)}

/* --- 抽屉按钮 --- */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(18,38,31,.6);
  color:var(--white);
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:rgba(34,224,200,.6);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bar{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle__text{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  color:inherit;
}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(1){transform:translateY(3px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* --- 导航（移动端抽屉） --- */
.site-nav{
  position:absolute;
  top:100%;
  left:0;
  right:0;
  max-height:calc(100vh - var(--bar-h));
  overflow-y:auto;
  padding:0 0 20px;
  background:linear-gradient(180deg,#0C1A17,#08150F 70%);
  border-bottom:1px solid var(--line);
  box-shadow:0 32px 60px -24px rgba(0,0,0,.95);
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.site-header[data-open="true"] .site-nav{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

.rail-meta{
  padding:14px 22px 6px;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--gold);
  opacity:.85;
}

.site-nav__list{
  counter-reset:navitem;
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:4px 0;
}
.site-nav__item{counter-increment:navitem}
.site-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 22px;
  border-left:4px solid transparent;
  color:var(--mist);
  font-size:.9375rem;
  font-weight:500;
  text-decoration:none;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.site-nav__link::before{
  content:"0" counter(navitem);
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.08em;
  color:var(--gold);
  opacity:.5;
  transition:opacity var(--dur) var(--ease);
}
.site-nav__label{display:block}
.site-nav__link::after{
  content:"";
  width:6px;
  height:6px;
  margin-left:auto;
  border-radius:50%;
  background:transparent;
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-nav__link:hover{
  color:var(--white);
  border-left-color:rgba(34,224,200,.55);
  background:linear-gradient(90deg,rgba(34,224,200,.10),transparent 80%);
  transform:translateX(2px);
}
.site-nav__link:hover::before{opacity:1}
.site-nav__link:focus-visible::before{opacity:1}
.site-nav__link[aria-current="page"]{
  color:var(--white);
  font-weight:700;
  border-left-color:var(--cyan);
  background:linear-gradient(90deg,rgba(34,224,200,.16),transparent 85%);
}
.site-nav__link[aria-current="page"]::before{opacity:1}
.site-nav__link[aria-current="page"]::after{
  background:var(--gold);
  box-shadow:0 0 10px rgba(233,196,106,.9);
}

.site-nav__foot{
  display:grid;
  gap:10px;
  padding:14px 22px 4px;
  border-top:1px solid var(--line);
  margin-top:10px;
}

/* ============================================================
   8. 页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,6rem);
  padding:clamp(2.5rem,5vw,4rem) var(--gutter) 0;
  background:linear-gradient(180deg,var(--ink-2),#08150F);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.85),transparent);
}

.footer__grid{
  display:grid;
  gap:clamp(1.75rem,3vw,3rem);
  grid-template-columns:1fr;
  max-width:var(--maxw);
  margin-inline:0 auto;
}

.footer__col{display:flex;flex-direction:column;gap:.85rem;min-width:0}

.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--white);
}
.footer-brand__mark{
  display:grid;
  place-items:center;
  min-width:46px;
  height:32px;
  padding:0 7px;
  border:1px solid rgba(233,196,106,.5);
  border-radius:8px;
  background:var(--ink);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
}
.footer-brand__name{font-size:1.0625rem;font-weight:800;letter-spacing:-.01em}
.footer-brand:hover .footer-brand__name{color:var(--cyan)}

.footer-brand__tagline{
  max-width:28em;
  font-size:var(--fs-sm);
  line-height:1.7;
  color:var(--mist);
}

.footer__title{
  font-family:var(--font-mono);
  font-size:.6875rem;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist-dim);
}

.footer__list{display:flex;flex-direction:column;gap:.5rem}
.footer__list--meta{gap:.85rem}

.footer__link{
  display:inline-block;
  width:fit-content;
  color:var(--mist);
  font-size:var(--fs-sm);
  text-decoration:none;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer__link:hover{color:var(--cyan);transform:translateX(2px)}

.footer__meta-row{display:flex;flex-direction:column;gap:2px}
.footer__key{
  font-family:var(--font-mono);
  font-size:.625rem;
  letter-spacing:.16em;
  color:var(--mist-dim);
}
.footer__val{
  font-size:var(--fs-sm);
  line-height:1.6;
  color:var(--white);
  overflow-wrap:anywhere;
}
.footer__val.mono{color:var(--gold)}

.footer__meta{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--mist-dim);
}
.footer__meta.mono{color:var(--mist-dim)}

.footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.75rem 1.5rem;
  max-width:var(--maxw);
  margin:clamp(2rem,4vw,3rem) auto 0;
  padding:1.25rem 0;
  border-top:1px solid var(--line);
}
.footer__copy{
  font-size:var(--fs-note);
  color:var(--mist);
  max-width:none;
}
.footer__note{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.06em;
  color:var(--mist-dim);
  max-width:none;
}

/* ============================================================
   9. 右下角浮动快捷球
   ============================================================ */
.quickball{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:130;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
}
.quickball__menu{
  position:absolute;
  right:0;
  bottom:calc(100% + 12px);
  display:grid;
  gap:4px;
  min-width:152px;
  padding:8px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:linear-gradient(180deg,#12261F,#0C1A17);
  box-shadow:var(--shadow-pop);
  transform-origin:bottom right;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px) scale(.96);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.quickball[data-open="true"] .quickball__menu{
  opacity:1;
  visibility:visible;
  transform:translateY(0) scale(1);
}
.quickball__link{
  display:block;
  padding:.55rem .75rem;
  border-radius:var(--r-sm);
  color:var(--white);
  font-size:var(--fs-sm);
  text-decoration:none;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.quickball__link:hover{background:rgba(34,224,200,.14);color:var(--cyan)}

.quickball__toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:52px;
  padding:0 20px 0 16px;
  border:1px solid rgba(34,224,200,.55);
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,#12261F,#0A1713);
  color:var(--cyan);
  cursor:pointer;
  box-shadow:0 20px 44px -20px rgba(34,224,200,.6),inset 0 0 0 1px rgba(0,0,0,.5);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.quickball__toggle:hover{transform:translateY(-2px);border-color:var(--cyan);box-shadow:0 24px 50px -18px rgba(34,224,200,.8)}
.quickball__icon{
  width:14px;
  height:14px;
  background:
    linear-gradient(var(--cyan),var(--cyan)) 0 0/6px 6px no-repeat,
    linear-gradient(var(--gold),var(--gold)) 8px 0/6px 6px no-repeat,
    linear-gradient(var(--gold),var(--gold)) 0 8px/6px 6px no-repeat,
    linear-gradient(var(--cyan),var(--cyan)) 8px 8px/6px 6px no-repeat;
  transition:transform var(--dur) var(--ease);
}
.quickball[data-open="true"] .quickball__icon{transform:rotate(90deg)}
.quickball__text{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.16em;
}

/* ============================================================
   10. 共享内容组件
   ============================================================ */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--cyan);
}

.section-title{
  position:relative;
  padding-left:1rem;
  font-size:var(--fs-h2);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  color:var(--white);
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.16em;
  bottom:.16em;
  width:4px;
  border-radius:2px;
  background:var(--cyan);
}
.section-title--plain{padding-left:0}
.section-title--plain::before{display:none}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem;
  margin-bottom:clamp(1.25rem,2.5vw,2rem);
}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:.65rem;
  padding:clamp(1.1rem,2vw,1.5rem);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:linear-gradient(165deg,rgba(18,38,31,.95),rgba(12,26,23,.95));
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(34,224,200,.55);
  box-shadow:0 26px 50px -28px rgba(34,224,200,.55);
}
.card__head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap}
.card__title{font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;color:var(--white)}
.card__meta{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.08em;
  color:var(--mist-dim);
}
.card__body{font-size:var(--fs-sm);line-height:1.75;color:var(--mist)}
.card__body p{max-width:none}
.card--accent{border-color:rgba(34,224,200,.45)}
.card--accent::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:2px;
  background:var(--cyan);
}

.grid{display:grid;gap:clamp(1rem,2vw,1.5rem)}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}

.data-table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-mono);
  font-size:var(--fs-mono);
  font-variant-numeric:tabular-nums;
}
.data-table th,
.data-table td{
  padding:.65rem .75rem;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
.data-table thead th{
  font-family:var(--font-mono);
  font-size:.6875rem;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--mist-dim);
  white-space:nowrap;
}
.data-table td{color:var(--gold)}
.data-table td:first-child{color:var(--white);font-family:var(--font-sans);font-size:var(--fs-sm)}
.data-table tbody tr{transition:background-color var(--dur) var(--ease)}
.data-table tbody tr:hover{background:rgba(34,224,200,.06)}
.data-table tbody tr:hover td:first-child{color:var(--cyan)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:.15em .6em;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:rgba(18,38,31,.7);
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.06em;
  color:var(--mist);
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan);border-color:rgba(34,224,200,.45);background:rgba(34,224,200,.08)}
.tag--gold{color:var(--gold);border-color:rgba(233,196,106,.45);background:rgba(233,196,106,.08)}
.tag--orange{color:var(--orange);border-color:rgba(255,122,47,.45);background:rgba(255,122,47,.08)}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  padding:1.25rem 0 0;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--mist-dim);
}
.breadcrumb__link{color:var(--mist);text-decoration:none}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__sep{color:var(--line);user-select:none}

/* ---------- 图形容器（供页面阶段放内联 SVG / CSS 纹理） ---------- */
.media{
  position:relative;
  width:100%;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:
    radial-gradient(120% 90% at 20% 0%,rgba(34,224,200,.12),transparent 60%),
    repeating-linear-gradient(0deg,rgba(30,58,51,.65) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(90deg,rgba(30,58,51,.65) 0 1px,transparent 1px 28px),
    var(--ink-2);
  aspect-ratio:16/9;
}
.media--square{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media__frame{display:block;width:100%;height:100%}
.media > svg{display:block;width:100%;height:100%}
.media__img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:inherit;
}
.media__caption{
  margin-top:.6rem;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.06em;
  color:var(--mist-dim);
}

/* ---------- 滚动进度（由 site.js 注入） ---------- */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:200;
  height:3px;
  pointer-events:none;
  background:transparent;
}
.scroll-progress__fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--gold) 72%,var(--orange));
  box-shadow:0 0 12px rgba(34,224,200,.75);
  transition:width .08s linear;
}

/* ---------- 抽屉打开时锁滚动 ---------- */
body.is-nav-open{overflow:hidden}

/* ============================================================
   11. 焦点与动效偏好
   ============================================================ */
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:var(--r-sm);
  box-shadow:var(--focus-ring);
}
.site-nav__link:focus-visible{outline-offset:-2px;border-radius: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;
    scroll-behavior:auto!important;
  }
  .card:hover,.btn:hover,.footer__link:hover,.site-nav__link:hover{transform:none}
  .scroll-progress__fill{transition:none}
}

/* ============================================================
   12. 响应式
   ============================================================ */
@media (min-width:560px){
  .brand__name{font-size:1rem}
  .brand__sub{font-size:.6875rem}
  .footer__grid{grid-template-columns:repeat(2,1fr)}
  .footer__col--brand{grid-column:1/-1}
}

@media (min-width:720px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (min-width:1024px){
  body{padding-top:0;padding-left:var(--rail-w)}

  .site-header{
    top:0;
    right:auto;
    bottom:0;
    width:var(--rail-w);
    height:auto;
    display:flex;
    flex-direction:column;
    border-bottom:0;
    border-right:1px solid var(--line);
    background:linear-gradient(180deg,#0C1A17 0%,#08150F 62%,#06110F 100%);
    box-shadow:inset -1px 0 0 rgba(34,224,200,.10),24px 0 60px -46px rgba(0,0,0,1);
  }

  .site-header__bar{
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    gap:14px;
    height:auto;
    padding:24px 22px 0;
  }

  .brand{flex-direction:column;align-items:flex-start;gap:10px;width:100%}
  .brand__mark{width:100%;height:46px;min-width:0;font-size:15px}
  .brand__name{font-size:1.125rem}
  .brand__sub{font-size:.6875rem;letter-spacing:.14em}

  .nav-toggle{display:none}

  .site-nav{
    position:static;
    display:flex;
    flex-direction:column;
    flex:1 1 auto;
    min-height:0;
    max-height:none;
    overflow-y:auto;
    padding:0 0 22px;
    background:none;
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    transform:none;
  }

  .rail-meta{padding:20px 22px 8px;font-size:.6875rem}

  .site-nav__list{gap:2px;padding:0}
  .site-nav__link{padding:11px 22px}
  .site-nav__foot{margin-top:auto;padding:18px 22px 0;border-top:1px solid var(--line)}

  .footer__grid{grid-template-columns:1.6fr 1fr 1.1fr 1fr;gap:clamp(1.5rem,2.5vw,3rem)}
  .footer__col--brand{grid-column:auto}

  .scroll-progress{left:var(--rail-w)}
}

@media (min-width:1180px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .section-head{margin-bottom:2rem}
}

@media (min-width:1440px){
  :root{--rail-w:288px}
}