/* ============================================================
   /assets/site.css · 星空体育 共享外壳
   1 重置与变量 · 2 基础排版 · 3 工具类 · 4 头部
   5 按钮 · 6 基础组件 · 7 页脚 · 8 显现与动效 · 9 响应式
   ============================================================ */

/* ---------- 1 · 重置与变量 ---------- */
*,*::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,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
kbd{font-family:inherit;font-size:inherit}

:root{
  --deep:#0A0E27;
  --indigo:#141A3A;
  --nebula:#6C3FC5;
  --cyan:#00E5FF;
  --orange:#FF6B35;
  --silver:#C9D6F0;
  --mint:#5CF2B4;
  --danger:#FF4D6D;
  --paper:#F7FAFF;

  --text:var(--paper);
  --text-muted:var(--silver);
  --line:rgba(201,214,240,.16);
  --line-soft:rgba(201,214,240,.09);
  --line-cyan:rgba(0,229,255,.42);

  --rail-w:96px;
  --bar-h:64px;
  --container:1240px;

  --r-lg:26px;
  --r-md:16px;
  --r-sm:10px;

  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --shadow-panel:0 26px 60px -32px rgba(4,7,22,.95);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2 · 基础排版 ---------- */
body{
  min-height:100dvh;
  padding-top:var(--bar-h);
  font-family:var(--font-body);
  font-size:clamp(16px,.5vw + 10px,17.5px);
  line-height:1.8;
  color:var(--text);
  background-color:var(--deep);
  background-image:
    radial-gradient(120% 90% at 88% -10%,rgba(108,63,197,.42),transparent 58%),
    radial-gradient(90% 70% at 4% 8%,rgba(0,229,255,.12),transparent 52%),
    radial-gradient(120% 90% at 50% 118%,rgba(108,63,197,.26),transparent 62%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(1.4px 1.4px at 24% 18%,rgba(247,250,255,.55),transparent 60%),
    radial-gradient(1.6px 1.6px at 68% 42%,rgba(0,229,255,.45),transparent 60%),
    radial-gradient(1.2px 1.2px at 42% 76%,rgba(247,250,255,.40),transparent 60%),
    radial-gradient(1.8px 1.8px at 86% 82%,rgba(201,214,240,.35),transparent 60%);
  background-size:340px 340px,460px 460px,520px 520px,640px 640px;
  opacity:.55;
}
main{display:block;position:relative;z-index:1}
main:focus{outline:none}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.12;letter-spacing:-.012em;color:var(--paper)}
h1{font-size:clamp(34px,5.2vw,64px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(20px,2.1vw,26px)}
h4{font-size:clamp(17px,1.6vw,20px)}
strong{font-weight:700;color:var(--paper)}
small{font-size:.82em}

:where(a,button,[tabindex]):focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:8px}

/* ---------- 3 · 工具类 ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(18px,4vw,40px)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.skip-link{
  position:fixed;top:10px;left:10px;z-index:220;
  padding:10px 18px;border-radius:12px;
  background:var(--orange);color:#1B0F07;
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:0 14px 32px -14px rgba(255,107,53,.95);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}
.link{color:var(--cyan);border-bottom:1px solid rgba(0,229,255,.35);transition:color .18s var(--ease),border-color .18s var(--ease)}
.link:hover{color:var(--paper);border-color:rgba(247,250,255,.7)}
.rule{height:1px;border:0;background:linear-gradient(90deg,rgba(0,229,255,.5),rgba(108,63,197,.42),transparent)}

/* ---------- 4 · 头部 ---------- */
.site-header{position:relative;z-index:60}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:70;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--nebula) 70%,var(--orange));
  box-shadow:0 0 16px rgba(0,229,255,.6);
  pointer-events:none;
}

/* 4.1 星轨 */
.rail{
  position:fixed;top:0;left:0;bottom:0;z-index:60;
  width:var(--rail-w);
  display:flex;flex-direction:column;align-items:center;
  padding:18px 0 16px;
  overflow:hidden;
  background:linear-gradient(180deg,rgba(20,26,58,.97),rgba(9,12,34,.99));
  border-right:1px solid var(--line);
  transition:width .28s var(--ease),box-shadow .28s var(--ease);
}
.rail::after{
  content:"";position:absolute;top:0;right:0;width:2px;height:100%;
  background:linear-gradient(180deg,transparent,rgba(0,229,255,.6),rgba(108,63,197,.5),transparent);
  pointer-events:none;
}
.rail[data-expanded="true"],.rail:focus-within{
  width:280px;
  box-shadow:34px 0 90px -50px rgba(0,229,255,.65),0 0 0 1px rgba(0,229,255,.2);
}
.rail__brand{
  display:flex;align-items:center;justify-content:center;gap:12px;
  width:100%;padding:4px 0 0;
}
.rail[data-expanded="true"] .rail__brand,.rail:focus-within .rail__brand{justify-content:flex-start;padding-left:22px}
.rail__glyph{
  flex:0 0 auto;display:grid;place-items:center;
  width:42px;height:42px;border-radius:50%;
  font-family:var(--font-display);font-weight:800;font-size:18px;color:var(--paper);
  background:radial-gradient(circle at 32% 28%,rgba(108,63,197,.95),rgba(10,14,39,.95));
  border:1px solid rgba(0,229,255,.5);
  box-shadow:inset 0 0 18px rgba(0,229,255,.28),0 0 22px -6px rgba(0,229,255,.5);
}
.rail__wordmark{
  font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.04em;
  color:var(--paper);white-space:nowrap;
}
.rail__wordmark,.rail__label{
  max-width:0;opacity:0;overflow:hidden;white-space:nowrap;
  transition:max-width .26s var(--ease),opacity .2s var(--ease);
}
.rail[data-expanded="true"] .rail__wordmark,
.rail[data-expanded="true"] .rail__label,
.rail:focus-within .rail__wordmark,
.rail:focus-within .rail__label{max-width:200px;opacity:1}
.rail__toggle{
  display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;margin-top:20px;padding:9px 0;
  color:var(--silver);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;
  border-block:1px solid var(--line-soft);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.rail[data-expanded="true"] .rail__toggle,.rail:focus-within .rail__toggle{justify-content:flex-start;padding-left:22px}
.rail__toggle:hover{color:var(--cyan);background:rgba(0,229,255,.06)}
.rail__toggle-mark{font-family:var(--font-mono);font-size:15px;line-height:1}
.rail__nav{width:100%;margin-top:12px;flex:1 1 auto;overflow-y:auto;overflow-x:hidden}
.rail__list{display:flex;flex-direction:column;gap:2px;width:100%}
.rail__item{width:100%}
.rail__link{
  position:relative;display:flex;align-items:center;justify-content:center;gap:12px;
  width:100%;padding:11px 0;
  font-family:var(--font-display);font-weight:700;font-size:14.5px;letter-spacing:.01em;
  color:rgba(201,214,240,.78);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.rail[data-expanded="true"] .rail__link,.rail:focus-within .rail__link{justify-content:flex-start;padding-left:26px}
.rail__link:hover{color:var(--paper);background:rgba(0,229,255,.07)}
.rail__idx{
  flex:0 0 auto;width:26px;text-align:center;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:rgba(201,214,240,.5);
  transition:color .18s var(--ease);
}
.rail__link:hover .rail__idx{color:var(--cyan)}
.rail__link[aria-current="page"]{color:var(--paper);background:rgba(108,63,197,.22)}
.rail__link[aria-current="page"] .rail__idx{color:var(--cyan)}
.rail__link[aria-current="page"]::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--cyan);box-shadow:0 0 16px rgba(0,229,255,.9);
}
.rail__foot{
  display:flex;align-items:center;justify-content:center;gap:9px;
  width:100%;margin-top:auto;padding:14px 0 0;
  border-top:1px solid var(--line-soft);
}
.rail[data-expanded="true"] .rail__foot,.rail:focus-within .rail__foot{justify-content:flex-start;padding-left:22px}
.rail__pulse{
  width:7px;height:7px;border-radius:50%;flex:0 0 auto;
  background:var(--mint);box-shadow:0 0 0 4px rgba(92,242,180,.16);
  animation:rail-pulse 2.6s ease-in-out infinite;
}
.rail__chip{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:rgba(201,214,240,.72);white-space:nowrap;
}
@keyframes rail-pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(92,242,180,.16);opacity:1}
  50%{box-shadow:0 0 0 7px rgba(92,242,180,.05);opacity:.75}
}

/* 4.2 命令栏 */
.command-bar{
  position:fixed;top:0;left:var(--rail-w);right:0;height:var(--bar-h);z-index:55;
  display:flex;align-items:center;
  background:rgba(10,14,39,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.command-bar__inner{
  display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);
  width:100%;max-width:var(--container);margin-inline:auto;
  padding-inline:clamp(16px,3vw,40px);
}
.command-bar__mark{
  font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.06em;
  color:var(--paper);white-space:nowrap;
  transition:color .18s var(--ease);
}
.command-bar__mark:hover{color:var(--cyan)}
.command-bar__meta{display:flex;align-items:center;gap:10px;min-width:0;flex-wrap:nowrap;overflow:hidden}
.command-bar__edition{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--cyan);
  padding:3px 8px;border:1px solid rgba(0,229,255,.34);border-radius:999px;white-space:nowrap;
}
.command-bar__badge{
  font-size:11.5px;letter-spacing:.06em;color:var(--mint);
  padding:3px 9px;border-radius:999px;white-space:nowrap;
  background:rgba(92,242,180,.1);border:1px solid rgba(92,242,180,.3);
}
.command-bar__descriptor{
  font-size:12.5px;letter-spacing:.04em;color:rgba(201,214,240,.72);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.command-bar__spacer{flex:1 1 auto}
.command-bar__hint{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:999px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(201,214,240,.82);
  border:1px solid var(--line);
  background:rgba(20,26,58,.7);
  white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.command-bar__hint:hover{color:var(--cyan);border-color:var(--line-cyan);background:rgba(0,229,255,.08)}
.command-bar__key{
  padding:1px 5px;border-radius:5px;
  background:rgba(0,229,255,.12);border:1px solid rgba(0,229,255,.28);
  color:var(--cyan);font-size:10.5px;
}
.command-bar__cta{flex:0 0 auto;white-space:nowrap}

/* 4.3 移动导航按钮 */
.nav-toggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:44px;height:40px;flex:0 0 auto;
  border-radius:12px;border:1px solid var(--line);
  background:rgba(20,26,58,.8);
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-cyan);background:rgba(0,229,255,.08)}
.nav-toggle__bar{display:block;width:18px;height:2px;border-radius:2px;background:var(--paper);transition:transform .2s var(--ease),opacity .16s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 4.4 移动导航面板 */
.mobile-nav{
  position:fixed;top:var(--bar-h);left:0;right:0;z-index:54;
  display:none;
  padding:10px clamp(16px,5vw,28px) 24px;
  max-height:calc(100dvh - var(--bar-h));overflow-y:auto;
  background:linear-gradient(180deg,rgba(9,12,32,.98),rgba(13,17,44,.99));
  border-bottom:1px solid rgba(0,229,255,.24);
  box-shadow:0 44px 80px -44px rgba(0,0,0,.95);
}
.mobile-nav__list{display:flex;flex-direction:column}
.mobile-nav__link{
  display:flex;align-items:center;gap:14px;
  padding:14px 6px;
  font-family:var(--font-display);font-weight:700;font-size:16px;
  color:rgba(247,250,255,.86);
  border-bottom:1px solid var(--line-soft);
  transition:color .18s var(--ease),background-color .18s var(--ease),padding-left .18s var(--ease);
}
.mobile-nav__link:hover{color:var(--cyan);background:rgba(0,229,255,.06);padding-left:12px}
.mobile-nav__idx{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:rgba(201,214,240,.5);min-width:24px;
}
.mobile-nav__label{letter-spacing:.02em}
.mobile-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(108,63,197,.2)}
.mobile-nav__link[aria-current="page"] .mobile-nav__idx{color:var(--cyan)}

/* 4.5 栏目索引浮层 */
.index-panel{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:clamp(14px,4vw,32px)}
.index-panel[hidden]{display:none}
.index-panel__scrim{
  position:absolute;inset:0;
  background:radial-gradient(120% 100% at 50% 0%,rgba(108,63,197,.34),rgba(5,8,22,.9) 70%);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  opacity:0;transition:opacity .22s var(--ease);
}
.index-panel[data-open="true"] .index-panel__scrim{opacity:1}
.index-panel__box{
  position:relative;width:min(720px,100%);max-height:min(84vh,660px);overflow-y:auto;
  padding:clamp(20px,3vw,34px);
  border-radius:var(--r-lg);
  border:1px solid rgba(0,229,255,.26);
  background:linear-gradient(160deg,rgba(22,28,62,.98),rgba(9,12,32,.99));
  box-shadow:0 50px 120px -50px rgba(0,229,255,.45),var(--shadow-panel);
  opacity:0;transform:translateY(12px) scale(.99);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.index-panel[data-open="true"] .index-panel__box{opacity:1;transform:none}
.index-panel__head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.index-panel__title{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.24em;
  color:var(--cyan);text-transform:uppercase;
}
.index-panel__close{
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);color:var(--silver);
  font-size:12.5px;letter-spacing:.08em;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.index-panel__close:hover{color:var(--paper);border-color:rgba(255,107,53,.6);background:rgba(255,107,53,.14)}
.index-panel__list{display:grid;gap:4px}
.index-panel__link{
  display:flex;align-items:baseline;gap:14px;
  padding:12px 14px;border-radius:12px;
  border:1px solid transparent;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.index-panel__link:hover{background:rgba(0,229,255,.08);border-color:rgba(0,229,255,.3)}
.index-panel__idx{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:rgba(201,214,240,.5)}
.index-panel__label{font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--paper)}
.index-panel__route{
  margin-left:auto;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:rgba(201,214,240,.45);
}
.index-panel__link[aria-current="page"] .index-panel__idx,
.index-panel__link[aria-current="page"] .index-panel__label{color:var(--cyan)}
.index-panel__foot{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:rgba(201,214,240,.55);
}

/* ---------- 5 · 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.78em 1.35em;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.02em;
  line-height:1.2;text-align:center;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn--accent{
  background:var(--orange);color:#20120A;
  box-shadow:0 14px 34px -18px rgba(255,107,53,.95);
}
.btn--accent:hover{background:#FF8557;transform:translateY(-1px);box-shadow:0 18px 38px -18px rgba(255,107,53,1)}
.btn--ghost{
  border-color:rgba(0,229,255,.45);color:var(--cyan);
  background:rgba(0,229,255,.07);
}
.btn--ghost:hover{background:rgba(0,229,255,.15);border-color:var(--cyan);transform:translateY(-1px)}
.btn--quiet{
  border-color:var(--line);color:var(--silver);
  background:rgba(20,26,58,.7);
}
.btn--quiet:hover{color:var(--paper);border-color:rgba(201,214,240,.4)}
.btn--sm{font-size:12.5px;padding:.58em .95em}

/* ---------- 6 · 基础组件 ---------- */
.section{padding-block:clamp(40px,6vw,76px)}
.section--tight{padding-block:clamp(22px,3vw,36px)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;
  color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}

.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px 30px;margin-bottom:clamp(18px,2.6vw,30px)}
.section-head__title{font-family:var(--font-display);font-weight:800;font-size:clamp(24px,3vw,38px);line-height:1.14;letter-spacing:-.01em}
.section-head__note{max-width:34em;color:var(--silver);font-size:14.5px;line-height:1.75}

.panel{
  position:relative;
  padding:clamp(20px,3vw,34px);
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(155deg,rgba(20,26,58,.9),rgba(11,15,38,.94));
  box-shadow:var(--shadow-panel);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.panel:hover{transform:translateY(-3px);border-color:rgba(0,229,255,.34);box-shadow:0 34px 70px -34px rgba(0,229,255,.4)}
.panel--tilt{border-radius:28px 28px 28px 8px}
.panel--accent{border-color:rgba(255,107,53,.42);background:linear-gradient(155deg,rgba(46,26,52,.9),rgba(13,14,38,.95))}
.panel__title{font-family:var(--font-display);font-weight:800;font-size:clamp(18px,1.8vw,22px);line-height:1.3;color:var(--paper);margin-bottom:8px}
.panel__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:rgba(201,214,240,.6)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(20,26,58,.72);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--silver);
}
.tag--cyan{color:var(--cyan);border-color:rgba(0,229,255,.4);background:rgba(0,229,255,.08)}
.tag--orange{color:var(--orange);border-color:rgba(255,107,53,.44);background:rgba(255,107,53,.1)}
.tag--mint{color:var(--mint);border-color:rgba(92,242,180,.4);background:rgba(92,242,180,.09)}
.tag--danger{color:var(--danger);border-color:rgba(255,77,109,.44);background:rgba(255,77,109,.1)}

.stat{display:grid;gap:6px}
.stat__value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-weight:700;font-size:clamp(38px,5vw,76px);line-height:1;letter-spacing:-.03em;
  color:var(--paper);
}
.stat__label{font-size:13px;letter-spacing:.06em;color:var(--silver)}
.stat--cyan .stat__value{color:var(--cyan)}
.stat--orange .stat__value{color:var(--orange)}
.stat--mint .stat__value{color:var(--mint)}

.media{
  position:relative;display:grid;place-items:center;isolation:isolate;
  aspect-ratio:16/10;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:
    radial-gradient(80% 80% at 22% 16%,rgba(108,63,197,.5),transparent 62%),
    radial-gradient(70% 70% at 84% 78%,rgba(0,229,255,.24),transparent 64%),
    linear-gradient(160deg,#111634,#070A1E);
}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;inset:auto 0 0 0;
  padding:12px 16px;
  font-size:12.5px;line-height:1.6;color:var(--silver);
  background:linear-gradient(0deg,rgba(6,9,24,.9),transparent);
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--orbit::after{
  content:"";position:absolute;top:-26%;right:-16%;
  width:64%;aspect-ratio:1;border-radius:50%;
  border:1px dashed rgba(0,229,255,.22);
  pointer-events:none;
}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

.crumbs{margin-block:clamp(16px,3vw,28px);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:rgba(201,214,240,.7)}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs__item{display:flex;align-items:center;gap:8px}
.crumbs__link{color:rgba(201,214,240,.75);border-bottom:1px solid transparent;padding-bottom:1px;transition:color .16s var(--ease),border-color .16s var(--ease)}
.crumbs__link:hover{color:var(--cyan);border-color:rgba(0,229,255,.6)}
.crumbs__sep{color:rgba(201,214,240,.35)}
.crumbs__item[aria-current="page"]{color:var(--paper)}

.prose{max-width:66ch}
.prose p{color:var(--silver)}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em}
.prose ul{list-style:disc;padding-left:1.25em;color:var(--silver)}
.prose li+li{margin-top:.4em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(0,229,255,.35)}
.prose a:hover{color:var(--paper);border-color:rgba(247,250,255,.7)}
.prose strong{color:var(--paper)}

.log{display:grid}
.log__list{display:grid;margin-left:6px;border-left:1px solid rgba(0,229,255,.22);padding-left:clamp(16px,2.2vw,24px)}
.log__item{position:relative;padding-bottom:clamp(18px,2.4vw,26px)}
.log__item:last-child{padding-bottom:0}
.log__item::before{
  content:"";position:absolute;left:calc(-1 * clamp(16px,2.2vw,24px) - 5px);top:.62em;
  width:9px;height:9px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 4px rgba(0,229,255,.14);
}
.log__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:rgba(201,214,240,.62)}
.log__title{font-family:var(--font-display);font-weight:700;font-size:clamp(16px,1.6vw,19px);color:var(--paper);margin-top:4px}
.log__body{font-size:14.5px;line-height:1.75;color:var(--silver);margin-top:6px}

/* ---------- 7 · 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;overflow:hidden;
  margin-top:clamp(56px,9vw,120px);
  padding:clamp(46px,6.5vw,84px) 0 26px;
  border-top:1px solid rgba(201,214,240,.14);
  background:
    radial-gradient(120% 130% at 14% 0%,rgba(108,63,197,.34),transparent 62%),
    linear-gradient(180deg,rgba(13,17,44,.94),rgba(6,9,24,1));
}
.site-footer::before{
  content:"";position:absolute;left:-10%;right:-10%;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,255,.75),rgba(108,63,197,.6),transparent);
}
.site-footer::after{
  content:"";position:absolute;right:-18%;bottom:-46%;
  width:min(720px,92vw);aspect-ratio:1;border-radius:50%;
  border:1px solid rgba(0,229,255,.14);
  background:radial-gradient(closest-side,rgba(0,229,255,.09),transparent 72%);
  pointer-events:none;
}
.site-footer__inner{position:relative;z-index:1;display:grid;gap:clamp(30px,4vw,52px);grid-template-columns:1fr}
.site-footer__brand{
  font-family:var(--font-display);font-weight:800;letter-spacing:-.01em;
  font-size:clamp(26px,3.4vw,38px);line-height:1.1;color:var(--paper);
}
.site-footer__tag{
  margin-top:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;
  color:var(--cyan);text-transform:uppercase;
}
.site-footer__desc{margin-top:16px;max-width:32em;font-size:15px;line-height:1.8;color:var(--silver)}
.site-footer__lead .btn{margin-top:22px}
.site-footer__col{min-width:0}
.site-footer__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:rgba(201,214,240,.66);
}
.site-footer__list{display:grid;gap:10px}
.site-footer__link{
  display:inline-block;font-size:15px;color:var(--paper);
  border-bottom:1px solid transparent;padding-bottom:1px;
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.site-footer__link:hover{color:var(--cyan);border-color:rgba(0,229,255,.55);transform:translateX(2px)}
.site-footer__details{display:grid;gap:12px}
.site-footer__detail{display:grid;gap:2px;min-width:0}
.site-footer__detail-key{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;
  color:rgba(201,214,240,.55);
}
.site-footer__detail-value{font-size:14px;line-height:1.6;color:var(--paper);overflow-wrap:anywhere}
.site-footer__note{margin-top:14px;max-width:34em;font-size:12.5px;line-height:1.75;color:rgba(201,214,240,.62)}
.site-footer__bottom{
  position:relative;z-index:1;
  margin-top:clamp(30px,4vw,50px);padding-top:18px;
  border-top:1px solid rgba(201,214,240,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 26px;
  font-size:12.5px;color:rgba(201,214,240,.7);
}
.site-footer__legal{display:flex;flex-wrap:wrap;gap:8px 20px}
.site-footer__legal-link{
  color:rgba(201,214,240,.82);padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.site-footer__legal-link:hover{color:var(--cyan);border-color:rgba(0,229,255,.55)}
.site-footer__meta{
  display:flex;flex-wrap:wrap;gap:6px 18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.05em;
}
.site-footer__icp,.site-footer__copy{color:rgba(201,214,240,.6)}

/* ---------- 8 · 显现与动效 ---------- */
html.has-js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
html.has-js [data-reveal="in"]{opacity:1;transform:none}

/* ---------- 9 · 响应式 ---------- */
@media (min-width:720px){
  .site-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__lead{grid-column:1 / -1}
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .site-footer__inner{grid-template-columns:minmax(0,1.45fr) minmax(0,.72fr) minmax(0,.85fr) minmax(0,1.1fr);align-items:start}
  .site-footer__lead{grid-column:auto}
}
@media (max-width:1023.98px){
  .rail{display:none}
  .command-bar{left:0;right:0}
  .nav-toggle{display:flex}
  .mobile-nav{
    display:block;visibility:hidden;opacity:0;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .mobile-nav[data-open="true"]{visibility:visible;opacity:1;transform:none;pointer-events:auto}
}
@media (max-width:899.98px){
  .command-bar__descriptor{display:none}
  .command-bar__hint{display:none}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .grid--12 > *{grid-column:1 / -1}
}
@media (max-width:639.98px){
  :root{--bar-h:60px}
  .command-bar__edition,.command-bar__badge{display:none}
  .command-bar__mark{font-size:15.5px;letter-spacing:.04em}
  .command-bar__cta{font-size:12px;padding:.6em .85em}
  .command-bar__inner{gap:10px}
  .section-head__note{font-size:13.5px}
  .site-footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:399.98px){
  .command-bar__cta{font-size:11px;padding:.55em .7em}
}

/* 动效可访问性 */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.has-js [data-reveal]{opacity:1;transform:none}
  .panel:hover{transform:none}
  .btn:hover{transform:none}
  .site-footer__link:hover{transform:none}
}