/* ===========================================================
   星空体育手机版 · 全站共享样式 /assets/site.css
   深空暗场 + Bento 看板 + 暖纸阅读面板
   =========================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --gs-void:#060B18;
  --gs-ink:#0C1526;
  --gs-stand:#14213A;
  --gs-paper:#F2EAD9;
  --gs-paper-ink:#1B2130;
  --gs-cyan:#21E6D4;
  --gs-violet:#7C5CFF;
  --gs-orange:#FF7A2F;
  --gs-silver:#A8B6CC;
  --gs-line:#22314F;
  --gs-white:#F4F8FF;

  --gs-font-score:'Archivo Black','Arial Black','Noto Sans SC',system-ui,sans-serif;
  --gs-font-head:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --gs-font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --gs-font-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --gs-ease:cubic-bezier(.22,.61,.36,1);
  --gs-gap:16px;
  --gs-radius:16px;
  --gs-shadow:0 12px 28px rgba(0,0,0,.35);
  --gs-shadow-lift:0 18px 42px rgba(0,0,0,.48);
  --gs-edge:1px solid var(--gs-line);
}

/* ---------- 2. reset 与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  color:var(--gs-white);
  font-family:var(--gs-font-body);
  font-size:16px;
  line-height:1.7;
  letter-spacing:0;
  background-color:var(--gs-void);
  background-image:
    radial-gradient(1100px 620px at 10% -12%, rgba(33,230,212,.10), transparent 62%),
    radial-gradient(940px 540px at 94% 2%, rgba(124,92,255,.13), transparent 64%),
    radial-gradient(760px 520px at 50% 108%, rgba(255,122,47,.07), transparent 66%);
  background-attachment:fixed;
}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--gs-cyan);text-decoration:none}
a:hover{color:var(--gs-white)}
main{display:block}
#main-content{scroll-margin-top:120px}
body{padding-top:clamp(78px,11vw,108px)}

h1,h2,h3,h4{font-family:var(--gs-font-head);font-weight:700;letter-spacing:-.01em;line-height:1.25}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}

:focus-visible{outline:2px solid var(--gs-cyan);outline-offset:3px;border-radius:6px}

.gs-visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 3. 跳转链接 ---------- */
.gs-skip{
  position:fixed;left:16px;top:14px;z-index:120;
  padding:10px 18px;border-radius:999px;
  background:var(--gs-cyan);color:var(--gs-void);
  font-weight:700;font-size:14px;letter-spacing:-.01em;
  transform:translateY(-190%);
  transition:transform 160ms var(--gs-ease);
}
.gs-skip:focus,.gs-skip:focus-visible{transform:translateY(0);color:var(--gs-void)}

/* ---------- 4. 页头：悬浮胶囊浮岛 ---------- */
.gs-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  display:flex;flex-direction:column;gap:8px;
  padding:14px clamp(14px,3vw,32px) 0;
  pointer-events:none;
}
.gs-nav{
  pointer-events:auto;
  width:min(1440px,100%);
  margin:0 auto;
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;
  border:var(--gs-edge);
  border-radius:999px;
  background:
    linear-gradient(180deg, rgba(20,33,58,.94), rgba(9,16,30,.94));
  box-shadow:0 18px 44px rgba(0,0,0,.5), inset 0 1px 0 rgba(244,248,255,.06);
  backdrop-filter:blur(10px);
  transition:padding 240ms var(--gs-ease), border-color 200ms var(--gs-ease), background 200ms var(--gs-ease);
}
.gs-nav[data-open]{border-color:rgba(33,230,212,.5)}

.gs-brand{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 8px 6px 8px;border-radius:999px;
  color:var(--gs-white);
}
.gs-brand:hover{color:var(--gs-white)}
.gs-brand__mark{
  position:relative;
  padding-left:16px;
  font-family:var(--gs-font-head);
  font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;
}
.gs-brand__mark::before{
  content:"";position:absolute;left:0;top:50%;
  width:7px;height:7px;margin-top:-3.5px;border-radius:2px;
  background:var(--gs-cyan);box-shadow:0 0 12px rgba(33,230,212,.8);
}
.gs-brand__code{
  font-family:var(--gs-font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--gs-cyan);
  padding:3px 7px;border-radius:6px;
  border:1px solid rgba(33,230,212,.35);
  background:rgba(33,230,212,.08);
  white-space:nowrap;
}

.gs-burger{
  display:none;align-items:center;gap:9px;
  margin-left:auto;
  padding:10px 16px;border-radius:999px;cursor:pointer;
  border:1px solid rgba(33,230,212,.4);
  background:rgba(33,230,212,.08);
  color:var(--gs-white);
  font-family:var(--gs-font-body);font-size:14px;font-weight:500;
  transition:border-color 120ms var(--gs-ease), background 120ms var(--gs-ease);
}
.gs-burger:hover{border-color:var(--gs-cyan);background:rgba(33,230,212,.16)}
.gs-burger__box{display:grid;gap:4px;width:16px}
.gs-burger__line{
  display:block;height:2px;border-radius:2px;background:var(--gs-cyan);
  transition:transform 160ms var(--gs-ease), opacity 160ms var(--gs-ease);
}
.gs-burger__text{white-space:nowrap;letter-spacing:.02em}

.gs-nav__wrap{display:flex;align-items:center;gap:8px;margin-left:auto}
.gs-nav__list{
  display:flex;align-items:center;gap:4px;
  margin:0;padding:0;list-style:none;
}
.gs-nav__link{
  display:inline-block;
  padding:9px 14px;border-radius:999px;
  border:1px solid transparent;
  color:var(--gs-silver);
  font-size:15px;font-weight:500;letter-spacing:-.01em;white-space:nowrap;
  transition:color 120ms var(--gs-ease), border-color 120ms var(--gs-ease),
             background 120ms var(--gs-ease), transform 120ms var(--gs-ease);
}
.gs-nav__link:hover{
  color:var(--gs-white);
  border-color:var(--gs-line);
  background:rgba(244,248,255,.05);
}
.gs-nav__link[aria-current="page"]{
  color:var(--gs-white);
  border-color:var(--gs-cyan);
  background:rgba(33,230,212,.10);
  box-shadow:0 0 0 1px rgba(33,230,212,.22), 0 8px 20px rgba(33,230,212,.16);
  transform:scale(1.06);
}
.gs-cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  border:1px solid var(--gs-cyan);
  background:var(--gs-cyan);color:var(--gs-void);
  font-size:15px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;
  box-shadow:0 0 24px rgba(33,230,212,.32);
  transition:transform 120ms var(--gs-ease), box-shadow 120ms var(--gs-ease), background 120ms var(--gs-ease);
}
.gs-cta::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--gs-void);opacity:.75;
  animation:gs-pulse 2.2s var(--gs-ease) infinite;
}
.gs-cta:hover{background:var(--gs-white);border-color:var(--gs-white);color:var(--gs-void);transform:translateY(-1px)}
@keyframes gs-pulse{0%,100%{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}

.gs-progress{
  width:min(1440px,100%);margin:0 auto;height:2px;border-radius:2px;
  background:rgba(34,49,79,.7);overflow:hidden;
}
.gs-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--gs-cyan),var(--gs-violet) 55%,var(--gs-orange));
  transition:width 120ms linear;
}

/* 收缩停靠（仅桌面/平板横屏） */
@media (min-width:900px){
  .gs-header[data-compact]{
    top:auto;bottom:0;
    padding:0 clamp(14px,3vw,32px) 16px;
    flex-direction:column-reverse;
  }
  .gs-header[data-compact] .gs-nav{width:min(1180px,100%);padding:6px 8px;gap:8px;box-shadow:var(--gs-shadow-lift)}
  .gs-header[data-compact] .gs-brand__mark{font-size:16px}
  .gs-header[data-compact] .gs-brand__code{display:none}
  .gs-header[data-compact] .gs-nav__link{padding:7px 12px;font-size:14px}
  .gs-header[data-compact] .gs-cta{padding:8px 16px;font-size:14px}
}
@media (min-width:900px){
  body{padding-bottom:96px}
}

/* 平板中等宽度压缩 */
@media (min-width:900px) and (max-width:1119px){
  .gs-brand__code{display:none}
  .gs-nav__link{padding:8px 10px;font-size:14px}
  .gs-cta{padding:9px 16px;font-size:14px}
}

/* 移动端 */
@media (max-width:899px){
  .gs-burger{display:inline-flex}
  .gs-nav{flex-wrap:wrap;border-radius:22px;padding:10px 12px;gap:10px}
  .gs-nav__wrap{
    display:none;
    flex:1 1 100%;
    flex-direction:column;align-items:stretch;gap:6px;
    margin:6px 0 4px;
  }
  .gs-nav[data-open] .gs-nav__wrap{display:flex}
  .gs-nav[data-open] .gs-burger__line:first-child{transform:translateY(3px) rotate(45deg)}
  .gs-nav[data-open] .gs-burger__line:last-child{transform:translateY(-3px) rotate(-45deg)}
  .gs-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .gs-nav__link{
    display:block;padding:12px 14px;border-radius:14px;
    font-size:16px;border-color:transparent;background:rgba(6,11,24,.5);
  }
  .gs-nav__link[aria-current="page"]{transform:none}
  .gs-cta{justify-content:center;margin-top:6px}
}

/* ---------- 5. 页脚 ---------- */
.gs-footer{
  margin-top:clamp(48px,7vw,88px);
  padding:clamp(40px,5vw,64px) clamp(16px,3vw,32px) clamp(26px,4vw,40px);
  border-top:var(--gs-edge);
  background:linear-gradient(180deg, rgba(12,21,38,.92), rgba(6,11,24,1));
}
.gs-footer__grid{
  width:min(1440px,100%);margin:0 auto;
  display:grid;gap:clamp(26px,4vw,44px);
  grid-template-columns:1.35fr 1fr 1.15fr 1.25fr;
}
.gs-footer__col{min-width:0}

.gs-footer__brand .gs-footer__wordmark{
  font-family:var(--gs-font-head);
  font-size:22px;font-weight:700;letter-spacing:-.01em;
  margin:0 0 12px;color:var(--gs-white);
}
.gs-footer__wordmark span{
  display:inline-block;margin-left:8px;
  font-family:var(--gs-font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--gs-cyan);vertical-align:2px;
  padding:3px 8px;border-radius:999px;
  border:1px solid rgba(33,230,212,.35);
  background:rgba(33,230,212,.08);
}
.gs-footer__sub{
  margin:0 0 12px;max-width:34ch;
  font-size:14px;line-height:1.75;color:var(--gs-silver);
}
.gs-footer__note{
  margin:0;max-width:32ch;
  font-size:13px;line-height:1.7;color:#7C8CA8;
}

.gs-footer__title{
  display:flex;align-items:center;gap:8px;
  margin:0 0 16px;
  font-family:var(--gs-font-mono);
  font-size:12px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gs-silver);
}
.gs-footer__title::before{content:"";width:14px;height:1px;background:var(--gs-cyan)}
.gs-footer__title--sub{margin-top:24px}

.gs-footer__links{
  list-style:none;margin:0;padding:0;
  display:grid;gap:10px 18px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.gs-footer__links a{
  display:inline-block;
  color:var(--gs-white);font-size:15px;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color 120ms var(--gs-ease), border-color 120ms var(--gs-ease);
}
.gs-footer__links a:hover{color:var(--gs-cyan);border-bottom-color:var(--gs-cyan)}
.gs-footer__links--sm{grid-template-columns:repeat(2,minmax(0,1fr))}

.gs-footer__col--map .gs-footer__links{gap:10px 18px}
.gs-footer__col--rhythm .gs-rhythm{margin-bottom:16px}
.gs-footer__col--contact .gs-meta__val{overflow-wrap:anywhere}

.gs-rhythm{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.gs-rhythm__item{
  display:flex;align-items:baseline;gap:12px;
  padding:10px 12px;
  border:var(--gs-edge);border-radius:12px;
  background:rgba(20,33,58,.5);
}
.gs-rhythm__key{
  flex:0 0 82px;
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--gs-cyan);
}
.gs-rhythm__val{font-size:14px;color:var(--gs-silver);line-height:1.55}

.gs-meta{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.gs-meta__key{
  display:block;margin-bottom:4px;
  font-family:var(--gs-font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--gs-silver);text-transform:uppercase;
}
.gs-meta__val{
  display:block;
  font-size:15px;line-height:1.6;color:var(--gs-white);
}
.gs-copy{
  display:inline-flex;align-items:center;
  margin-left:8px;padding:3px 10px;border-radius:999px;cursor:pointer;
  font-family:var(--gs-font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--gs-cyan);
  border:1px solid rgba(33,230,212,.45);
  background:rgba(33,230,212,.08);
  transition:background 120ms var(--gs-ease), color 120ms var(--gs-ease);
}
.gs-copy:hover{background:var(--gs-cyan);color:var(--gs-void)}

.gs-footer__base{
  width:min(1440px,100%);
  margin:clamp(28px,4vw,44px) auto 0;padding-top:18px;
  border-top:var(--gs-edge);
  display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;justify-content:space-between;
}
.gs-footer__legal{
  margin:0;
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.04em;
  color:#7C8CA8;
}

.gs-toast{
  position:fixed;left:50%;bottom:104px;z-index:110;
  margin:0;padding:10px 20px;border-radius:999px;
  background:rgba(33,230,212,.14);
  border:1px solid rgba(33,230,212,.55);
  color:var(--gs-white);font-size:14px;
  transform:translate(-50%,12px);opacity:0;pointer-events:none;
  transition:opacity 160ms var(--gs-ease), transform 160ms var(--gs-ease);
}
.gs-toast[data-visible]{opacity:1;transform:translate(-50%,0)}

@media (max-width:1023px){
  .gs-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:599px){
  .gs-footer__grid{grid-template-columns:1fr;gap:30px}
  .gs-footer__base{flex-direction:column;align-items:flex-start}
  .gs-toast{left:16px;right:16px;bottom:88px;transform:translateY(12px);text-align:center}
  .gs-toast[data-visible]{transform:translateY(0)}
}

/* ---------- 6. 布局骨架 ---------- */
.gs-shell{
  width:min(1440px,100%);
  margin:0 auto;
  padding:0 clamp(16px,3vw,32px);
}
.gs-section{
  position:relative;
  padding:clamp(36px,5vw,72px) 0;
}
.gs-sechead{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:18px;flex-wrap:wrap;
  margin-bottom:24px;padding-bottom:14px;
  border-bottom:var(--gs-edge);
}
.gs-eyebrow{
  display:block;margin-bottom:10px;
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gs-cyan);
}
.gs-h1{margin:0;font-size:clamp(30px,5vw,56px);line-height:1.08;letter-spacing:-.02em}
.gs-h2{margin:0;font-size:clamp(22px,3vw,32px);line-height:1.2}
.gs-h3{margin:0;font-size:18px;line-height:1.4}
.gs-lead{
  margin:12px 0 0;max-width:62ch;
  font-size:17px;line-height:1.7;color:var(--gs-silver);
}

/* Bento 网格 */
.gs-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gs-gap);
}
.gs-cell{grid-column:span 12;min-width:0}
@media (min-width:768px){
  .gs-cell--1x1{grid-column:span 4}
  .gs-cell--2x1{grid-column:span 6}
  .gs-cell--2x2{grid-column:span 6}
  .gs-cell--3x1{grid-column:span 12}
}
@media (min-width:1120px){
  .gs-cell--1x1{grid-column:span 3}
  .gs-cell--2x1{grid-column:span 6}
  .gs-cell--2x2{grid-column:span 6}
  .gs-cell--3x1{grid-column:span 12}
}

/* ---------- 7. 面板 / 框景 / 横向看台带 ---------- */
.gs-panel{
  position:relative;
  height:100%;
  padding:20px;
  border:var(--gs-edge);
  border-radius:var(--gs-radius);
  background:linear-gradient(180deg, rgba(14,24,42,.82), rgba(9,16,30,.82));
  box-shadow:var(--gs-shadow), inset 0 1px 0 rgba(244,248,255,.04);
  transition:border-color 160ms var(--gs-ease), box-shadow 160ms var(--gs-ease), transform 160ms var(--gs-ease);
}
.gs-panel::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:1px;
  background:var(--gs-cyan);opacity:.9;
  transform:scaleX(0);transform-origin:left center;
  transition:transform 200ms var(--gs-ease);
}
.gs-panel:hover{border-color:rgba(33,230,212,.45);box-shadow:var(--gs-shadow-lift), inset 0 1px 0 rgba(244,248,255,.06)}
.gs-panel:hover::after{transform:scaleX(1)}
.gs-panel--focus{
  padding:clamp(20px,3vw,28px);
  border-color:rgba(33,230,212,.36);
  background:
    radial-gradient(520px 300px at 12% 0%, rgba(33,230,212,.14), transparent 62%),
    linear-gradient(160deg, rgba(33,230,212,.08), rgba(124,92,255,.14) 58%, rgba(12,21,38,.92));
}
.gs-panel--paper{
  border-color:rgba(27,33,48,.18);
  background:var(--gs-paper);
  color:var(--gs-paper-ink);
  box-shadow:0 20px 48px rgba(0,0,0,.45);
}
.gs-panel--paper .gs-eyebrow{color:#6B4EFF}
.gs-panel--paper .gs-panel__meta{color:#5C6377}
.gs-panel--paper a{color:#0F6E68}
.gs-panel--paper a:hover{color:var(--gs-paper-ink)}
.gs-panel__title{margin:0 0 8px;font-size:19px;line-height:1.35}
.gs-panel__meta{
  margin:0 0 10px;
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--gs-silver);
}
.gs-panel__text{margin:0;font-size:15px;line-height:1.7;color:var(--gs-silver)}
.gs-panel--paper .gs-panel__text{color:var(--gs-paper-ink)}

.gs-frame{
  position:relative;
  padding:clamp(20px,3vw,36px);
  border:var(--gs-edge);
  border-radius:20px;
  overflow:hidden;
  background:
    radial-gradient(760px 420px at 18% -6%, rgba(33,230,212,.12), transparent 62%),
    radial-gradient(700px 460px at 88% 108%, rgba(124,92,255,.16), transparent 64%),
    linear-gradient(180deg, rgba(20,33,58,.9), rgba(6,11,24,.94));
  box-shadow:var(--gs-shadow);
}
.gs-frame::before,
.gs-frame::after{
  content:"";position:absolute;width:22px;height:22px;
  border:1px solid var(--gs-cyan);opacity:.85;pointer-events:none;
}
.gs-frame::before{top:12px;left:12px;border-right:0;border-bottom:0}
.gs-frame::after{bottom:12px;right:12px;border-left:0;border-top:0}
.gs-frame__ticks{
  position:absolute;inset:14px;pointer-events:none;opacity:.7;
  background-image:
    linear-gradient(to right, var(--gs-cyan) 0 22px, transparent 22px),
    linear-gradient(to bottom, var(--gs-cyan) 0 22px, transparent 22px),
    linear-gradient(to left, var(--gs-cyan) 0 22px, transparent 22px),
    linear-gradient(to top, var(--gs-cyan) 0 22px, transparent 22px);
  background-repeat:no-repeat;
  background-size:22px 1px, 1px 22px, 22px 1px, 1px 22px;
  background-position:right top, right top, left bottom, left bottom;
}
.gs-frame__label{
  position:absolute;top:0;left:32px;
  transform:translateY(-50%);
  padding:0 10px;
  background:var(--gs-void);
  font-family:var(--gs-font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gs-cyan);
}

.gs-band{margin:clamp(30px,4vw,52px) 0}
.gs-band__head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.gs-band__track{
  display:flex;gap:var(--gs-gap);
  overflow-x:auto;
  padding:4px 0 14px;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  scrollbar-width:thin;
  scrollbar-color:var(--gs-line) transparent;
}
.gs-band__track::-webkit-scrollbar{height:6px}
.gs-band__track::-webkit-scrollbar-track{background:transparent}
.gs-band__track::-webkit-scrollbar-thumb{background:var(--gs-line);border-radius:99px}
.gs-band__card{
  flex:0 0 auto;
  width:clamp(240px,66vw,300px);
  scroll-snap-align:start;
  padding:18px;
  border:var(--gs-edge);border-radius:14px;
  background:linear-gradient(180deg, rgba(14,24,42,.85), rgba(9,16,30,.85));
  box-shadow:var(--gs-shadow);
}
@media (min-width:1024px){.gs-band__card{width:288px}}

/* ---------- 8. 图像容器（页面阶段放图） ---------- */
.gs-media{
  position:relative;display:block;overflow:hidden;
  border:var(--gs-edge);border-radius:14px;
  background:linear-gradient(140deg,#0C1526,#141F38 55%,#0A1120);
}
.gs-media::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(320px 200px at 22% 14%, rgba(33,230,212,.16), transparent 62%),
    radial-gradient(320px 220px at 86% 86%, rgba(124,92,255,.2), transparent 64%);
}
.gs-media__img{position:relative;width:100%;height:100%;object-fit:cover}
.gs-media__cap{
  position:absolute;left:12px;bottom:12px;z-index:2;
  padding:4px 11px;border-radius:999px;
  border:var(--gs-edge);background:rgba(6,11,24,.72);
  font-family:var(--gs-font-mono);font-size:11px;letter-spacing:.1em;color:var(--gs-white);
}
.gs-media--16x9{aspect-ratio:16/9}
.gs-media--4x3{aspect-ratio:4/3}
.gs-media--1x1{aspect-ratio:1/1}
.gs-media--3x4{aspect-ratio:3/4}

/* ---------- 9. 数字 / 标签 / 按钮 ---------- */
.gs-score{
  display:inline-block;
  font-family:var(--gs-font-score);
  font-weight:900;
  font-variant-numeric:tabular-nums;
  font-size:clamp(48px,8vw,120px);
  line-height:1.05;letter-spacing:-.03em;
  color:var(--gs-white);
}
.gs-score--cyan{color:var(--gs-cyan);text-shadow:0 0 32px rgba(33,230,212,.35)}

.gs-stat{display:flex;flex-direction:column;gap:4px}
.gs-stat__num{
  font-family:var(--gs-font-score);font-weight:900;
  font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.4vw,40px);line-height:1.05;color:var(--gs-white);
}
.gs-stat__label{
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--gs-silver);
}

.gs-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--gs-violet);
  border:1px solid rgba(124,92,255,.42);
  background:rgba(124,92,255,.12);
}
.gs-tag--live{
  color:var(--gs-cyan);border-color:rgba(33,230,212,.45);background:rgba(33,230,212,.12);
}
.gs-tag--new{
  color:var(--gs-orange);border-color:rgba(255,122,47,.45);background:rgba(255,122,47,.12);
}

.gs-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;cursor:pointer;
  border:var(--gs-edge);
  background:rgba(20,33,58,.6);
  color:var(--gs-white);
  font-family:var(--gs-font-body);font-size:15px;font-weight:700;letter-spacing:-.01em;
  text-decoration:none;
  transition:transform 120ms var(--gs-ease), border-color 120ms var(--gs-ease),
             background 120ms var(--gs-ease), color 120ms var(--gs-ease);
}
.gs-btn:hover{transform:translateY(-1px);border-color:rgba(33,230,212,.5);color:var(--gs-white)}
.gs-btn--primary{
  background:var(--gs-cyan);border-color:var(--gs-cyan);color:var(--gs-void);
  box-shadow:0 0 26px rgba(33,230,212,.3);
}
.gs-btn--primary:hover{background:var(--gs-white);border-color:var(--gs-white);color:var(--gs-void)}
.gs-btn--ghost{background:transparent;border-color:rgba(33,230,212,.5);color:var(--gs-cyan)}
.gs-btn--ghost:hover{background:rgba(33,230,212,.12)}

/* ---------- 10. 筛选 ---------- */
.gs-filters{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  margin-bottom:20px;
}
.gs-filter{
  appearance:none;
  padding:9px 16px;border-radius:999px;cursor:pointer;
  border:var(--gs-edge);
  background:rgba(12,21,38,.72);
  color:var(--gs-silver);
  font-family:var(--gs-font-mono);font-size:13px;letter-spacing:.08em;
  transition:color 120ms var(--gs-ease), border-color 120ms var(--gs-ease),
             background 120ms var(--gs-ease), transform 120ms var(--gs-ease);
}
.gs-filter:hover{color:var(--gs-white);border-color:rgba(33,230,212,.45)}
.gs-filter[aria-pressed="true"]{
  color:var(--gs-void);background:var(--gs-cyan);border-color:var(--gs-cyan);
  transform:translateY(-1px);
}
.gs-filterable{transition:opacity 200ms var(--gs-ease), transform 200ms var(--gs-ease)}
.gs-filterable[hidden]{display:none}
.gs-filterable[data-filtered]{animation:gs-fade-shift 200ms var(--gs-ease) both}
@keyframes gs-fade-shift{
  from{opacity:0;transform:translateX(8px)}
  to{opacity:1;transform:translateX(0)}
}

/* ---------- 11. 面包屑 / 正文 / 章节索引 ---------- */
.gs-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:0 0 20px;padding:0;list-style:none;
  font-family:var(--gs-font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--gs-silver);
}
.gs-breadcrumb li{display:flex;align-items:center;gap:10px}
.gs-breadcrumb li+li::before{content:"/";color:var(--gs-line)}
.gs-breadcrumb a{color:var(--gs-silver)}
.gs-breadcrumb a:hover{color:var(--gs-cyan)}
.gs-breadcrumb [aria-current="page"]{color:var(--gs-white)}

.gs-prose{max-width:720px}
.gs-prose h2{margin:36px 0 14px;font-size:24px}
.gs-prose h3{margin:30px 0 12px;font-size:19px}
.gs-prose p{margin:0 0 20px;line-height:1.7}
.gs-prose ul,.gs-prose ol{margin:0 0 20px;padding-left:22px}
.gs-prose li{margin:0 0 8px}
.gs-prose strong{color:var(--gs-white)}
.gs-panel--paper .gs-prose strong{color:var(--gs-paper-ink)}
.gs-prose code{
  font-family:var(--gs-font-mono);font-size:14px;
  padding:1px 6px;border-radius:6px;
  border:1px solid rgba(33,230,212,.3);
  background:rgba(33,230,212,.12);
  color:var(--gs-cyan);
}

.gs-index{position:sticky;top:120px;align-self:start}
.gs-index__list{
  list-style:none;margin:0;padding:0;
  display:grid;gap:2px;
  border-left:var(--gs-edge);
}
.gs-index__link{
  display:block;
  margin-left:-1px;
  padding:9px 0 9px 14px;
  border-left:2px solid transparent;
  font-family:var(--gs-font-mono);font-size:13px;letter-spacing:.04em;
  color:var(--gs-silver);
  transition:color 120ms var(--gs-ease), border-color 120ms var(--gs-ease);
}
.gs-index__link:hover{color:var(--gs-white)}
.gs-index__link[aria-current="true"]{color:var(--gs-cyan);border-left-color:var(--gs-cyan)}

/* ---------- 12. 手风琴 ---------- */
.gs-accordion{display:grid;gap:10px}
.gs-accordion__item{
  position:relative;
  border:var(--gs-edge);border-radius:14px;
  background:rgba(12,21,38,.62);
  overflow:hidden;
  transition:border-color 200ms var(--gs-ease), box-shadow 200ms var(--gs-ease);
}
.gs-accordion__item[data-open]{
  border-color:rgba(33,230,212,.45);
  box-shadow:0 0 0 1px rgba(33,230,212,.14), var(--gs-shadow);
}
.gs-accordion__btn{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;
  border:0;background:none;
  color:var(--gs-white);
  font-family:var(--gs-font-body);font-size:16px;font-weight:500;
  text-align:left;cursor:pointer;
}
.gs-accordion__btn::after{
  content:"+";
  font-family:var(--gs-font-mono);font-size:18px;line-height:1;
  color:var(--gs-cyan);
}
.gs-accordion__item[data-open] .gs-accordion__btn::after{content:"–"}
.gs-accordion__body{
  position:relative;
  max-height:0;overflow:hidden;
  transition:max-height 200ms var(--gs-ease);
}
.gs-accordion__item[data-open] .gs-accordion__body{max-height:560px}
.gs-accordion__body>*{margin:0;padding:0 18px 18px}
.gs-accordion__body::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--gs-cyan);
  transform:scaleX(0);transform-origin:left center;
  transition:transform 200ms var(--gs-ease);
}
.gs-accordion__item[data-open] .gs-accordion__body::after{transform:scaleX(1)}

/* ---------- 13. 显现动效 ---------- */
[data-reveal]{opacity:1}
html.gs-js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity 420ms var(--gs-ease), transform 420ms var(--gs-ease);
}
html.gs-js [data-reveal][data-revealed]{opacity:1;transform:translateY(0)}

/* ---------- 14. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .gs-band__track{scroll-behavior:auto}
  .gs-cta::before{animation:none;opacity:.75}
  .gs-filterable[data-filtered]{animation:none}
  html.gs-js [data-reveal]{opacity:1;transform:none;transition:none}
  .gs-panel:hover{transform:none}
}