/* ============================================================
   /assets/site.css — 开云全站体育 共享外壳
   1 tokens  2 reset  3 中文排版  4 页头  5 移动导航
   6 页脚  7 通用组件  8 图片容器  9 响应式  10 动效降级
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --night:#0B1F33;
  --night-deep:#071A2B;
  --green:#0D2B25;
  --green-lift:#12352E;
  --cyan:#12D6C4;
  --cyan-soft:#8FF7EC;
  --orange:#FF7A1A;
  --paper:#F4F7F2;
  --mist:#A9B8B3;
  --red:#E5484D;
  --yellow:#F5C542;
  --ink:#07110D;
  --ink-soft:#3D4A45;
  --line:rgba(169,184,179,.22);
  --line-strong:rgba(169,184,179,.44);
  --shell:min(1240px,100% - 2.75rem);
  --radius-s:10px;
  --radius-m:18px;
  --radius-l:26px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-display:"Archivo Narrow","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--night);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.16;letter-spacing:.01em}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px;border-radius:4px}
::selection{background:var(--cyan);color:var(--ink)}

/* ---------- 3. 中文排版与工具类 ---------- */
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.shell{width:var(--shell);margin-inline:auto}
.section{padding-block:clamp(2.8rem,6.5vw,5.5rem)}
.section--paper{background:var(--paper);color:var(--ink)}
.section--paper .section-title,.section--paper h2,.section--paper h3{color:var(--ink)}
.section--paper .lede,.section--paper .card__text{color:rgba(7,17,13,.74)}
.section--paper .eyebrow{color:#0B7A70}
.section--paper .note{color:rgba(7,17,13,.64);border-left-color:rgba(13,43,37,.4)}
.section__head{display:grid;gap:.85rem;max-width:70ch;margin-bottom:clamp(1.5rem,3vw,2.6rem)}
.eyebrow{display:flex;align-items:center;gap:.65rem;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";display:inline-block;width:28px;height:1px;background:currentColor}
.section-title{font-weight:900;font-stretch:condensed;font-size:clamp(1.9rem,4.4vw,3.05rem);line-height:1.06;letter-spacing:.01em}
.lede{font-size:clamp(1rem,1.6vw,1.12rem);line-height:1.8;color:rgba(244,247,242,.82);max-width:64ch}
.note{font-size:13px;line-height:1.7;color:var(--mist);border-left:2px solid rgba(18,214,196,.5);padding-left:.85rem}

/* ---------- 4. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,var(--night-deep) 0%,var(--night) 64%,rgba(11,31,51,.97) 100%);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 44px -34px rgba(0,0,0,.95);
  isolation:isolate;
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:linear-gradient(90deg,rgba(18,214,196,.07) 1px,transparent 1px);
  background-size:64px 100%;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 82%);
  mask-image:linear-gradient(180deg,#000,transparent 82%);
}
.skip-link{
  position:fixed;
  top:.6rem;
  left:.6rem;
  z-index:200;
  transform:translateY(-220%);
  padding:.6rem 1rem;
  border-radius:var(--radius-s);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  letter-spacing:.04em;
  transition:transform 180ms var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}
.progress-rail{position:absolute;inset:0 0 auto 0;height:2px;background:rgba(169,184,179,.16);pointer-events:none}
.progress-rail__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--orange));transition:width 90ms linear}
.masthead-bar__inner{
  width:var(--shell);
  margin-inline:auto;
  padding-block:.85rem .7rem;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1rem;
}
.masthead-bar__meta{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--mist);line-height:1.5}
.masthead-bar__meta--end{text-align:right}
.masthead{display:grid;justify-items:center;gap:.35rem;padding-inline:.5rem}
.masthead__mark{
  width:52px;
  height:6px;
  background:linear-gradient(90deg,var(--cyan) 0 22px,transparent 22px 30px,var(--orange) 30px 52px);
  transform:skewX(-18deg);
  transition:transform 260ms var(--ease);
}
.masthead:hover .masthead__mark{transform:skewX(18deg)}
.masthead__name{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  font-size:clamp(1.5rem,3.4vw,2.3rem);
  line-height:1;
  letter-spacing:.12em;
  color:var(--paper);
}
.masthead__sub{font-size:10px;letter-spacing:.34em;text-transform:uppercase;color:var(--cyan)}
.navbar{border-top:1px solid rgba(169,184,179,.14);background:rgba(7,26,43,.42)}
.navbar__inner{
  position:relative;
  width:var(--shell);
  margin-inline:auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:1rem;
  padding-block:.5rem;
}
.site-nav{display:block}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:clamp(.35rem,1.5vw,1.3rem)}
.nav-list__item{position:relative;display:flex;align-items:center}
.nav-list__item--spot{gap:.35rem}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:.4rem;
  padding:.55rem .3rem;
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.04em;
  color:var(--paper);
  transition:color 180ms var(--ease);
}
.nav-link__index{font-size:.64em;line-height:1;color:var(--mist);transform:translateY(-.15em);transition:color 180ms var(--ease)}
.nav-link__text{display:inline-block}
.nav-link::after{
  content:"";
  position:absolute;
  left:.3rem;
  right:.3rem;
  bottom:.18rem;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 220ms var(--ease);
}
.nav-link:hover{color:var(--cyan-soft)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan-soft)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"] .nav-link__index{color:var(--orange)}
.nav-link--spot{color:var(--cyan);align-items:center}
.nav-link--spot::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 3px rgba(255,122,26,.2);
  flex:none;
}
.nav-link--spot:hover{color:var(--cyan-soft)}
.drawer-toggle{
  width:26px;
  height:26px;
  flex:none;
  display:grid;
  place-items:center;
  border:1px solid var(--line-strong);
  border-radius:50%;
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.drawer-toggle:hover{border-color:var(--cyan);background:rgba(18,214,196,.14)}
.drawer-toggle__chev{
  width:7px;
  height:7px;
  border-right:1.5px solid var(--cyan);
  border-bottom:1.5px solid var(--cyan);
  transform:rotate(45deg) translate(-1px,-1px);
  transition:transform 220ms var(--ease);
}
.drawer-toggle[aria-expanded="true"] .drawer-toggle__chev{transform:rotate(-135deg) translate(-1px,-1px)}
.nav-drawer{
  position:absolute;
  top:calc(100% + .9rem);
  left:50%;
  z-index:70;
  width:min(348px,86vw);
  padding:1rem 1.15rem 1.15rem;
  border-radius:var(--radius-m);
  background:var(--paper);
  color:var(--ink);
  transform:translateX(-50%);
  box-shadow:0 30px 54px -26px rgba(3,10,18,.8),0 0 0 1px rgba(7,17,13,.06);
  animation:drawer-in 200ms var(--ease) both;
}
.nav-drawer[hidden]{display:none}
.nav-drawer::before{
  content:"";
  position:absolute;
  top:-5px;
  left:50%;
  width:10px;
  height:10px;
  background:var(--paper);
  transform:translateX(-50%) rotate(45deg);
}
.nav-drawer__head{
  font-size:10.5px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:#456056;
  padding-bottom:.55rem;
  border-bottom:1px solid rgba(7,17,13,.14);
}
.nav-drawer__list{display:grid;gap:.1rem;margin-top:.45rem}
.nav-drawer__link{
  display:flex;
  align-items:center;
  gap:.6rem;
  padding:.42rem .4rem;
  border-radius:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--green);
  transition:background 160ms var(--ease),color 160ms var(--ease);
}
.nav-drawer__link:hover{background:rgba(18,214,196,.18);color:var(--ink)}
.nav-drawer__index{font-size:11px;color:#0B7A70}
.nav-drawer__note{
  margin-top:.7rem;
  padding-top:.6rem;
  border-top:1px dashed rgba(7,17,13,.18);
  font-size:12.5px;
  line-height:1.65;
  color:#456056;
}
@keyframes drawer-in{
  from{opacity:0;transform:translateX(-50%) translateY(-6px)}
  to{opacity:1;transform:translateX(-50%) translateY(0)}
}
.header-cta{
  position:absolute;
  right:0;
  top:50%;
  transform:translateY(-50%);
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.5rem .95rem;
  border-radius:999px;
  background:var(--orange);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:800;
  font-size:13.5px;
  letter-spacing:.06em;
  white-space:nowrap;
  box-shadow:0 12px 26px -16px rgba(255,122,26,.95);
  transition:background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.header-cta::after{content:"›";font-size:1.15em;line-height:1;transform:translateY(-1px)}
.header-cta:hover{background:#FF9147;box-shadow:0 16px 30px -16px rgba(255,122,26,1)}
.quick-entry{
  position:fixed;
  top:50%;
  right:0;
  z-index:55;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.95rem .6rem;
  border-radius:14px 0 0 14px;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:800;
  font-size:13px;
  letter-spacing:.18em;
  writing-mode:vertical-rl;
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(-50%) translateX(102%);
  box-shadow:-12px 18px 34px -20px rgba(0,0,0,.9);
  transition:transform 240ms var(--ease),opacity 240ms var(--ease),visibility 240ms linear;
}
.quick-entry.is-on{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(-50%) translateX(0)}
.quick-entry__dot{width:7px;height:7px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 3px rgba(255,122,26,.24)}
.quick-entry__text{line-height:1}

/* ---------- 5. 移动导航 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.45rem .8rem;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--paper);
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.nav-toggle__bars{position:relative;width:18px;height:2px;background:currentColor;transition:background 180ms var(--ease)}
.nav-toggle__bars::before,
.nav-toggle__bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform 200ms var(--ease),top 200ms 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)}
.nav-toggle__label{line-height:1}
@keyframes nav-drop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:translateY(0)}
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  padding-block:clamp(2.6rem,5.5vw,4.2rem) 1.6rem;
  background:
    radial-gradient(120% 90% at 50% -18%,rgba(18,214,196,.12),transparent 62%),
    var(--green);
  border-top:1px solid var(--line);
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(90deg,rgba(244,247,242,.05) 1px,transparent 1px);
  background-size:80px 100%;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
  mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.footer-shell{position:relative;width:var(--shell);margin-inline:auto}
.footer-colophon{display:grid;gap:.45rem;padding-bottom:1.5rem;border-bottom:1px solid var(--line)}
.footer-brand{
  justify-self:start;
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  font-size:clamp(1.6rem,5vw,2.5rem);
  line-height:1;
  letter-spacing:.1em;
  color:var(--paper);
}
.footer-brand__sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--cyan)}
.footer-tagline{font-size:13.5px;line-height:1.7;color:rgba(244,247,242,.72);max-width:52ch}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(1.2rem,3vw,2.4rem);
  padding-block:clamp(1.5rem,3vw,2.2rem);
  border-bottom:1px solid var(--line);
}
.footer-col{display:grid;align-content:start;gap:.9rem}
.footer-col__title{
  display:flex;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--mist);
}
.footer-col__num{color:var(--cyan)}
.footer-list{display:grid;gap:.5rem}
.footer-link{
  display:inline-flex;
  align-items:baseline;
  gap:.5rem;
  font-size:14.5px;
  line-height:1.6;
  color:rgba(244,247,242,.86);
  transition:color 160ms var(--ease);
}
.footer-link:hover{color:var(--cyan-soft)}
.footer-link__index{font-family:var(--font-mono);font-size:10.5px;color:rgba(169,184,179,.72)}
.footer-contact{display:grid;gap:.95rem}
.footer-contact__item{display:grid;gap:.15rem;font-size:14px;color:rgba(244,247,242,.88)}
.footer-contact__label{font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--mist)}
.footer-contact__value{word-break:break-word}
.footer-contact__note{font-size:12.5px;line-height:1.7;color:rgba(169,184,179,.88)}
.copy-btn{
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  margin-top:.2rem;
  padding:.2rem .6rem;
  border:1px solid rgba(143,247,236,.42);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--cyan-soft);
  transition:background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease);
}
.copy-btn:hover{background:rgba(18,214,196,.16)}
.copy-btn.is-done{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.8rem 1.4rem;
  padding-top:1.4rem;
  font-size:12.5px;
  color:var(--mist);
}
.footer-base__legal{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:rgba(169,184,179,.95)}
.footer-legal{display:flex;flex-wrap:wrap;gap:.5rem 1.1rem}
.footer-link--legal{font-size:12.5px;color:var(--mist);border-bottom:1px dashed rgba(169,184,179,.42);padding-bottom:1px}
.footer-link--legal:hover{color:var(--cyan-soft);border-bottom-color:var(--cyan-soft)}

/* ---------- 7. 通用组件 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  padding-block:1.1rem 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--mist);
}
.breadcrumbs__link{border-bottom:1px solid transparent;transition:color 160ms var(--ease),border-color 160ms var(--ease)}
.breadcrumbs__link:hover{color:var(--cyan-soft);border-bottom-color:currentColor}
.breadcrumbs__sep{opacity:.55}
.breadcrumbs__current{color:var(--paper)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55rem;
  padding:.78rem 1.4rem;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  letter-spacing:.05em;
  transition:transform 180ms var(--ease),background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn--primary{background:var(--orange);color:var(--ink);box-shadow:0 16px 32px -20px rgba(255,122,26,.95)}
.btn--primary:hover{background:#FF9147;transform:translateY(-1px)}
.btn--ghost{border-color:var(--line-strong);color:var(--paper)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.btn--quiet{background:rgba(18,214,196,.14);border-color:rgba(18,214,196,.38);color:var(--cyan-soft)}
.btn--quiet:hover{background:rgba(18,214,196,.24)}
.grid{display:grid;gap:clamp(1rem,2vw,1.6rem)}
.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))}
.card{
  position:relative;
  display:grid;
  align-content:start;
  gap:.6rem;
  padding:clamp(1.05rem,2.2vw,1.6rem);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:rgba(13,43,37,.7);
  transition:border-color 180ms var(--ease),transform 220ms var(--ease),background 180ms var(--ease);
}
.card:hover{border-color:rgba(18,214,196,.5);transform:translateY(-2px)}
.card--entry{border-left:3px solid var(--cyan)}
.card--data{border-left:3px solid var(--orange);background:rgba(7,26,43,.82)}
.card--resource{border-style:dashed;border-left:3px solid var(--cyan-soft)}
.card--index{border-left:3px solid var(--mist);background:rgba(7,26,43,.66)}
.card--consult{background:var(--green-lift);border-color:rgba(143,247,236,.34)}
.card--paper{background:#FFFFFF;border-color:rgba(7,17,13,.1);color:var(--ink)}
.card--paper .card__title{color:var(--ink)}
.card--paper .card__text{color:rgba(7,17,13,.72)}
.card--paper .card__meta{color:#5B6B64}
.card__kicker{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.card__title{font-family:var(--font-display);font-weight:800;font-size:clamp(1.05rem,2vw,1.35rem);line-height:1.3;letter-spacing:.02em}
.card__text{font-size:14.5px;line-height:1.75;color:rgba(244,247,242,.8)}
.card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--mist)}
.badge{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.16rem .6rem;
  border:1px solid currentColor;
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.badge--cyan{color:var(--cyan)}
.badge--orange{color:var(--orange)}
.badge--mist{color:var(--mist)}
.badge--red{color:var(--red)}
.badge--yellow{color:var(--yellow)}
.data-bar{display:grid;gap:.4rem}
.data-bar__head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--mist)}
.data-bar__track{height:6px;border-radius:999px;background:rgba(169,184,179,.22);overflow:hidden}
.data-bar__fill{
  display:block;
  height:100%;
  width:100%;
  border-radius:inherit;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-soft));
  transform-origin:left center;
  transition:transform 520ms var(--ease);
}
.data-bar--orange .data-bar__fill{background:linear-gradient(90deg,var(--orange),#FFB077)}
.record{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--paper)}
.record__pill{width:12px;height:16px;border-radius:2px;box-shadow:inset 0 0 0 1px rgba(7,17,13,.28)}
.record__pill--red{background:var(--red)}
.record__pill--yellow{background:var(--yellow)}
.record__count{font-variant-numeric:tabular-nums}
.tabs{display:grid;gap:1.25rem}
.tablist{
  display:inline-flex;
  flex-wrap:wrap;
  gap:.3rem;
  padding:.3rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(7,26,43,.62);
  justify-self:start;
}
.tab{
  padding:.44rem .9rem;
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--mist);
  transition:background 160ms var(--ease),color 160ms var(--ease);
}
.tab:hover{color:var(--cyan-soft)}
.tab[aria-selected="true"]{background:var(--cyan);color:var(--ink)}
.tabpanel{animation:panel-in 220ms var(--ease) both}
.tabpanel[hidden]{display:none}
@keyframes panel-in{
  from{opacity:0;transform:translateY(6px)}
  to{opacity:1;transform:translateY(0)}
}

/* ---------- 8. 图片容器 ---------- */
.figure{display:grid;gap:.6rem;margin:0}
.figure__media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:
    radial-gradient(120% 120% at 18% 8%,rgba(18,214,196,.24),transparent 56%),
    linear-gradient(152deg,var(--green) 0%,var(--night-deep) 58%,#06121F 100%);
}
.figure__media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(244,247,242,.18) 1px,transparent 1px);
  background-size:5px 5px;
  opacity:.5;
  mix-blend-mode:soft-light;
}
.figure__media img{width:100%;height:100%;object-fit:cover}
.figure__media--tall{aspect-ratio:4/5}
.figure__media--wide{aspect-ratio:21/9}
.figure__caption{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;line-height:1.6;color:var(--mist)}

/* ---------- 9. 响应式 ---------- */
@media (max-width:1100px){
  .nav-link{font-size:14px}
  .header-cta{font-size:12.5px;padding:.45rem .8rem}
}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  :root{--shell:min(1240px,100% - 1.9rem)}
  .masthead-bar__inner{grid-template-columns:1fr;justify-items:center;gap:.45rem;padding-block:.9rem .7rem}
  .masthead-bar__meta{font-size:10px;letter-spacing:.16em;text-align:center}
  .masthead-bar__meta--end{text-align:center}
  .navbar__inner{
    flex-wrap:wrap;
    justify-content:space-between;
    align-items:center;
    gap:.6rem;
    padding-block:.6rem;
  }
  .nav-toggle{display:inline-flex;order:1}
  .header-cta{position:static;transform:none;order:2;font-size:12.5px;padding:.45rem .8rem}
  .site-nav{
    order:3;
    flex:0 0 100%;
    display:none;
    margin-top:.55rem;
    padding-top:.35rem;
    border-top:1px solid var(--line);
  }
  .site-nav[data-open]{display:block;animation:nav-drop 240ms var(--ease) both}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list__item{border-bottom:1px solid rgba(169,184,179,.16)}
  .nav-list__item:last-child{border-bottom:0}
  .nav-list__item--spot{gap:0}
  .nav-link{display:flex;justify-content:flex-start;align-items:center;gap:.55rem;padding:.85rem .2rem;font-size:17px}
  .nav-link::after{display:none}
  .nav-link__index{font-size:11px;transform:none;color:var(--mist)}
  .nav-link--spot::before{width:6px;height:6px;box-shadow:0 0 0 2px rgba(255,122,26,.2)}
  .nav-link[aria-current="page"]{color:var(--cyan-soft)}
  .nav-link[aria-current="page"] .nav-link__index{color:var(--orange)}
  .drawer-toggle{display:none}
  .nav-drawer{display:none}
  .quick-entry{
    top:auto;
    right:50%;
    bottom:1rem;
    writing-mode:horizontal-tb;
    padding:.5rem .95rem;
    border-radius:999px;
    font-size:12px;
    letter-spacing:.14em;
    transform:translate(50%,160%);
    box-shadow:0 16px 32px -18px rgba(0,0,0,.9);
  }
  .quick-entry.is-on{transform:translate(50%,0)}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  :root{--shell:min(1240px,100% - 1.5rem)}
  body{font-size:16px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:1.6rem}
  .footer-base{flex-direction:column;align-items:flex-start}
  .tablist{width:100%;justify-content:flex-start}
  .header-cta{font-size:11.5px;padding:.4rem .65rem;letter-spacing:.02em}
  .nav-toggle{font-size:10.5px;padding:.4rem .65rem}
}

/* ---------- 10. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .card:hover,.btn--primary:hover{transform:none}
  .masthead:hover .masthead__mark{transform:skewX(-18deg)}
}