/* ============================================================
   有球体育全站 · /assets/site.css
   夜场深绿底 / 荧光青索引 / 橙红比分 —— 共享外壳与基础组件
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

/* ---------- 2. Tokens ---------- */
:root{
  --night:#071A12;
  --stand:#0D2B20;
  --board:#123D2C;
  --neon:#35F2C2;
  --neon-cool:#8DFFE6;
  --score:#FF5A36;
  --signal:#FF8A3D;
  --grass:#A8B8AE;
  --paper:#F4FFF9;
  --shadow:#030A07;

  --line:rgba(53,242,194,.16);
  --line-soft:rgba(53,242,194,.09);
  --line-strong:rgba(53,242,194,.34);

  --shell-w:1240px;
  --header-h:86px;
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-pill:999px;

  --font-head:"Barlow Condensed","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"Roboto Mono","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 3. Base ---------- */
body{
  min-height:100%;
  background-color:var(--night);
  background-image:
    radial-gradient(920px 520px at 10% -12%, rgba(53,242,194,.14), transparent 62%),
    radial-gradient(760px 460px at 94% 2%, rgba(255,90,54,.10), transparent 60%),
    linear-gradient(180deg,#071A12 0%,#05130D 58%,#030A07 100%);
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.7;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--neon);color:var(--night)}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:700;
  line-height:1.06;
  letter-spacing:-.005em;
  text-transform:uppercase;
}
h1{font-size:clamp(2.6rem,7vw,5.6rem)}
h2{font-size:clamp(1.6rem,3vw,2.8rem)}
h3{font-size:clamp(1.15rem,1.7vw,1.5rem)}
h4{font-size:clamp(1rem,1.3vw,1.15rem)}
p{max-width:76ch}
strong{color:var(--paper);font-weight:700}

:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:8px}

.mono,.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.03em;
}

/* ---------- 4. 布局工具 ---------- */
.container{width:100%;max-width:var(--shell-w);margin-inline:auto;padding-inline:clamp(16px,4vw,32px)}
.section{padding-block:clamp(40px,6vw,80px)}
.stack{display:grid;gap:16px}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.grid{display:grid;gap:clamp(16px,2.4vw,26px)}
.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))}
.auto-grid{display:grid;gap:clamp(16px,2.4vw,26px);grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.hairline{height:1px;border:0;background:var(--line);margin-block:clamp(24px,4vw,48px)}

.section-head{
  display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;
  gap:14px 24px;margin-bottom:clamp(20px,3vw,36px);
  padding-bottom:16px;border-bottom:1px solid var(--line);
}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.26em;
  text-transform:uppercase;color:var(--neon);
}
.kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:var(--neon)}
.lede{font-size:clamp(1rem,1.25vw,1.14rem);color:var(--grass)}

/* 左侧纵向订阅轨道 + 右侧内容 */
.layout-shell{
  display:grid;
  grid-template-columns:minmax(210px,3fr) minmax(0,9fr);
  gap:clamp(20px,3vw,38px);
  align-items:start;
}
.rail{
  position:sticky;top:calc(var(--header-h) + 14px);
  display:grid;gap:14px;padding:20px;
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,43,32,.92),rgba(7,26,18,.72));
  box-shadow:0 30px 60px -44px rgba(3,10,7,1);
}
.rail-title{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.24em;text-transform:uppercase;color:var(--neon)}
.rail-list{display:grid;gap:6px}
.rail-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 11px;border-radius:14px;border:1px solid transparent;
  font-size:.9rem;color:var(--grass);transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.rail-link:hover,.rail-link:focus-visible{color:var(--paper);background:rgba(53,242,194,.09);border-color:var(--line)}
.rail-link[aria-current="page"]{color:var(--neon);background:rgba(53,242,194,.11);border-color:var(--line-strong)}
.rail-note{font-size:.78rem;line-height:1.6;color:var(--grass)}

/* 框景与刻度 */
.frame{
  position:relative;
  padding:clamp(20px,3vw,42px);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-xl);
  background:linear-gradient(150deg,rgba(13,43,32,.78),rgba(7,26,18,.62));
  box-shadow:inset 0 1px 0 rgba(141,255,230,.07);
}
.frame::before,.frame::after{
  content:"";position:absolute;width:16px;height:16px;border:2px solid var(--neon);
}
.frame::before{top:-2px;left:-2px;border-right:0;border-bottom:0;border-radius:14px 0 0 0}
.frame::after{bottom:-2px;right:-2px;border-left:0;border-top:0;border-radius:0 0 14px 0}
.tick-line{
  height:12px;border-radius:2px;opacity:.55;
  background-image:repeating-linear-gradient(90deg,rgba(53,242,194,.75) 0 2px,transparent 2px 24px);
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-pill);border:1px solid transparent;
  font-family:var(--font-head);font-size:.95rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-score{
  background:linear-gradient(118deg,var(--score),#ff8a3d);
  color:#1B0A04;
  box-shadow:0 14px 28px -16px rgba(255,90,54,.95);
}
.btn-score:hover,.btn-score:focus-visible{transform:translateY(-2px);box-shadow:0 18px 34px -16px rgba(255,90,54,1)}
.btn-ghost{
  background:rgba(53,242,194,.07);color:var(--neon);border-color:var(--line-strong);
}
.btn-ghost:hover,.btn-ghost:focus-visible{background:rgba(53,242,194,.16);color:var(--neon-cool)}
.btn-line{background:transparent;color:var(--paper);border-color:rgba(244,255,249,.3)}
.btn-line:hover,.btn-line:focus-visible{border-color:var(--neon);color:var(--neon)}
.btn-sm{padding:9px 16px;font-size:.82rem;letter-spacing:.1em}

/* ---------- 6. 页头：悬浮胶囊浮岛 ---------- */
.skip-link{
  position:absolute;top:-64px;left:50%;transform:translateX(-50%);
  z-index:120;padding:11px 22px;border-radius:0 0 16px 16px;
  background:var(--neon);color:var(--night);font-weight:700;font-size:.9rem;
  transition:top .2s ease;
}
.skip-link:focus,.skip-link:focus-visible{top:8px;outline-color:var(--paper)}

.site-header{
  position:sticky;top:0;z-index:80;
  padding:clamp(8px,1.4vw,16px) clamp(10px,3vw,26px) 0;
  background:linear-gradient(180deg,rgba(7,26,18,.9),rgba(7,26,18,.32));
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.header-shell{
  position:relative;
  display:flex;align-items:center;gap:clamp(10px,2vw,22px);
  max-width:var(--shell-w);margin-inline:auto;
  padding:9px 14px 9px 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:linear-gradient(118deg,rgba(13,43,32,.95),rgba(7,26,18,.86));
  box-shadow:0 20px 46px -28px rgba(3,10,7,1),inset 0 1px 0 rgba(141,255,230,.09);
  transition:padding .28s ease,box-shadow .28s ease,background .28s ease;
}
.site-header[data-shrink] .header-shell{padding-block:5px;box-shadow:0 14px 34px -26px rgba(3,10,7,1)}
.site-header[data-shrink] .brand-slogan{opacity:0;max-height:0;transform:translateY(-4px)}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.brand-mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:38px;height:38px;border-radius:14px;
  background:linear-gradient(140deg,var(--neon-cool),var(--neon) 52%,#0F8F6C);
  color:#04160F;font-family:var(--font-head);font-size:1.15rem;font-weight:700;
  box-shadow:0 0 0 1px rgba(141,255,230,.55),0 12px 24px -14px rgba(53,242,194,.95);
}
.brand-text{display:flex;flex-direction:column;gap:2px;min-width:0;line-height:1.05}
.brand-name{font-family:var(--font-head);font-size:1.06rem;font-weight:700;letter-spacing:.04em;color:var(--paper)}
.brand-slogan{
  font-family:var(--font-mono);font-size:.6rem;letter-spacing:.28em;text-transform:uppercase;
  color:var(--neon);max-height:20px;overflow:hidden;
  transition:opacity .26s ease,max-height .26s ease,transform .26s ease;
}

.site-nav{display:flex;align-items:center;gap:clamp(8px,1.6vw,18px);margin-left:auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-link{
  display:inline-block;padding:8px 13px;border-radius:var(--radius-pill);
  border:1px solid transparent;font-size:.9rem;font-weight:500;color:var(--grass);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--paper);background:rgba(53,242,194,.1);border-color:var(--line)}
.nav-link[aria-current="page"]{
  color:#04160F;background:var(--neon);border-color:var(--neon);font-weight:700;
  box-shadow:0 10px 22px -14px rgba(53,242,194,.95);
}
.nav-cta{padding:10px 18px;font-size:.85rem}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 15px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:rgba(53,242,194,.08);color:var(--neon);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;
}
.nav-toggle:hover,.nav-toggle:focus-visible{background:rgba(53,242,194,.18);color:var(--neon-cool)}
.nav-toggle-bars{display:grid;gap:3px;width:16px}
.nav-toggle-bars span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.header-progress{
  position:absolute;left:22px;right:22px;bottom:5px;height:2px;
  border-radius:2px;background:rgba(53,242,194,.13);overflow:hidden;
}
.header-progress-bar{
  display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--neon),var(--neon-cool));
  transition:transform .12s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  padding:clamp(40px,6vw,74px) clamp(16px,4vw,32px) 0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,43,32,.92),rgba(3,10,7,.99));
  color:var(--grass);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:7px;opacity:.55;
  background-image:repeating-linear-gradient(90deg,rgba(53,242,194,.8) 0 2px,transparent 2px 26px);
}
.footer-shell{
  display:grid;gap:clamp(24px,4vw,48px);
  grid-template-columns:1.7fr 1fr 1fr 1.35fr;
  max-width:var(--shell-w);margin-inline:auto;
  padding-bottom:clamp(32px,5vw,56px);
}
.footer-brand{display:grid;gap:14px;align-content:start;justify-items:start}
.footer-brand-line{
  font-family:var(--font-head);font-weight:700;line-height:1.12;
  font-size:clamp(1.3rem,2.4vw,1.9rem);color:var(--paper);text-transform:uppercase;
}
.footer-note{font-size:.86rem;line-height:1.7;max-width:36ch;color:var(--grass)}
.footer-col{display:grid;gap:12px;align-content:start}
.footer-title{
  font-family:var(--font-mono);font-size:.68rem;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:var(--neon);
}
.footer-list{display:grid;gap:9px}
.footer-list a{font-size:.94rem;color:var(--grass);transition:color .2s ease,padding-left .2s ease}
.footer-list a:hover,.footer-list a:focus-visible{color:var(--neon-cool);padding-left:5px}
.footer-contact-list{display:grid;gap:10px;font-size:.9rem;line-height:1.6}
.footer-contact-list .mono{color:var(--neon-cool);font-size:.86rem;word-break:break-all}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 22px;max-width:var(--shell-w);margin-inline:auto;
  padding:18px 0 26px;border-top:1px solid var(--line-soft);
  font-size:.78rem;
}
.footer-legal{font-family:var(--font-mono);letter-spacing:.08em;color:var(--grass)}
.footer-copy{font-family:var(--font-mono);letter-spacing:.08em;color:rgba(168,184,174,.75)}
.to-top{
  padding:9px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(53,242,194,.06);color:var(--neon);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s,background .2s ease;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover,.to-top:focus-visible{background:rgba(53,242,194,.18);color:var(--neon-cool)}

/* ---------- 8. 研究板组件 ---------- */
.card{
  position:relative;overflow:hidden;
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(18,61,44,.92),rgba(13,43,32,.72));
  box-shadow:0 28px 54px -40px rgba(3,10,7,1);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(130% 92% at 100% 0%,rgba(53,242,194,.12),transparent 56%);
}
.card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.card-title{margin-bottom:9px;font-size:clamp(1.05rem,1.45vw,1.32rem)}
.card-body{position:relative;z-index:1;font-size:.95rem;color:var(--grass)}
.card-meta{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--grass)}

.panel{
  padding:clamp(16px,2.2vw,22px);border-radius:var(--radius-lg);
  border:1px dashed var(--line-strong);background:rgba(7,26,18,.55);
}
.stat{display:grid;gap:3px}
.stat-value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(1.6rem,3vw,2.4rem);line-height:1;letter-spacing:-.02em;color:var(--score);
}
.stat-label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--grass)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:rgba(53,242,194,.07);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--neon);
}
.tag-score{border-color:rgba(255,90,54,.5);background:rgba(255,90,54,.11);color:var(--score)}
.tag-signal{border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.11);color:var(--signal)}
.tag-mute{border-color:rgba(168,184,174,.34);background:rgba(168,184,174,.09);color:var(--grass)}

/* 筛选胶囊 */
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(13,43,32,.62);color:var(--grass);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  transition:color .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover,.chip:focus-visible{color:var(--paper);border-color:var(--line-strong)}
.chip[aria-pressed="true"]{
  background:var(--neon);border-color:var(--neon);color:#04160F;font-weight:700;
  box-shadow:0 12px 26px -16px rgba(53,242,194,.95);
}

/* 资料表格 */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:var(--radius-lg);background:rgba(7,26,18,.5);
}
.data-table{width:100%;min-width:640px;font-size:.92rem}
.data-table caption{
  padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--neon);
}
.data-table th,.data-table td{padding:12px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
.data-table thead th{
  font-family:var(--font-mono);font-size:.66rem;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--grass);background:rgba(13,43,32,.75);
}
.data-table tbody tr:nth-child(even){background:rgba(18,61,44,.5)}
.data-table tbody tr:hover{background:rgba(53,242,194,.07)}
.data-table .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--paper)}

/* 时间轴 */
.timeline{position:relative;display:grid;gap:20px;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--line-strong),rgba(53,242,194,.05));
}
.timeline-item{position:relative}
.timeline-item::before{
  content:"";position:absolute;left:-27px;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--night);border:2px solid var(--grass);
  transition:border-color .45s ease,background .45s ease,box-shadow .45s ease;
}
.timeline-item[data-lit]::before{border-color:var(--neon);background:var(--neon);box-shadow:0 0 0 7px rgba(53,242,194,.14)}
.timeline-time{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--score);
}

/* 手风琴 */
.accordion{display:grid;gap:10px}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:rgba(7,26,18,.56);overflow:hidden;
}
.accordion-trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:16px 20px;text-align:left;
  font-family:var(--font-head);font-size:1.02rem;font-weight:700;color:var(--paper);
}
.accordion-trigger::after{
  content:"+";font-family:var(--font-mono);font-size:1.15rem;color:var(--neon);
  transition:transform .25s ease;
}
.accordion-trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.accordion-panel{padding:0 20px 18px;font-size:.95rem;color:var(--grass)}

/* 图片容器 */
.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/10;
  border-radius:var(--radius-xl);border:1px solid var(--line);
  background:linear-gradient(150deg,#123D2C,#071A12);
}
.media-frame > img,.media-frame > svg,.media-frame > .media-fill{
  width:100%;height:100%;object-fit:cover;
}
.media-frame.is-wide{aspect-ratio:21/9}
.media-frame.is-portrait{aspect-ratio:3/4}
.media-frame.is-square{aspect-ratio:1/1}
.media-frame figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  font-size:.78rem;color:var(--paper);
  background:linear-gradient(0deg,rgba(3,10,7,.92),transparent);
}

/* 面包屑 */
.breadcrumb{padding-block:18px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--grass)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:rgba(53,242,194,.45)}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--neon)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- 9. 显现动效 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(16px) rotate(-.4deg);
  transition:opacity .62s ease,transform .62s cubic-bezier(.2,.8,.25,1);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .layout-shell{grid-template-columns:1fr}
  .rail{position:static}
  .rail-list{grid-auto-flow:column;grid-auto-columns:max-content;overflow-x:auto;padding-bottom:4px}
}
@media (max-width:920px){
  :root{--header-h:74px}
  body{background-attachment:scroll}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .site-nav{
    position:absolute;top:calc(100% + 12px);left:0;right:0;z-index:90;
    display:flex;flex-direction:column;align-items:stretch;gap:12px;
    margin-left:0;padding:16px;
    max-height:min(72vh,520px);overflow-y:auto;
    border-radius:26px;border:1px solid var(--line-strong);
    background:linear-gradient(160deg,rgba(13,43,32,.99),rgba(7,26,18,.99));
    box-shadow:0 34px 64px -32px rgba(3,10,7,1);
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity .24s ease,transform .24s ease,visibility .24s;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{padding:13px 14px;font-size:1rem;border-radius:16px;border-color:rgba(53,242,194,.1)}
  .nav-cta{justify-content:center;width:100%}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .footer-shell{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:620px){
  .header-shell{padding:8px 10px 8px 12px}
  .brand-slogan{display:none}
  .header-progress{left:14px;right:14px}
  .footer-shell{grid-template-columns:1fr}
  .footer-base{flex-direction:column;align-items:flex-start}
  .grid-4{grid-template-columns:1fr}
  .media-frame.is-wide{aspect-ratio:16/10}
}

/* ---------- 11. 动效偏好与打印 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  [data-reveal]{opacity:1!important;transform:none!important}
  .timeline-item::before{transition:none}
}
@media print{
  .site-header,.site-footer,.to-top,.header-progress{display:none!important}
  body{background:#fff;color:#111}
}