/* =========================================================
   /assets/site.css — 亚体育安装 共享外壳与通用元件
   技术蓝图网格 · 暖纸档案层 · 玻璃白索引层
   ========================================================= */

/* ---------- 1. RESET ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,h6,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;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
hr{border:0;}
[hidden]{display:none !important;}

/* ---------- 2. TOKENS ---------- */
:root{
  --c-night:#0E3B2E;
  --c-night-2:#15563F;
  --c-ink:#0B0C0E;
  --c-paper:#F2EDE2;
  --c-grey:#8A939B;
  --c-volt:#D8FF3E;
  --c-stop:#FF5A2B;
  --c-line:#1F6B4F;
  --c-glass:rgba(255,255,255,.08);
  --c-text:#F7F5EF;
  --c-text-dim:rgba(247,245,239,.68);
  --c-ink-dim:rgba(11,12,14,.68);

  --f-display:"Archivo Narrow","Arial Narrow","Helvetica Neue",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --f-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;

  --step-1:clamp(2.6rem,7vw,6.4rem);
  --step-2:clamp(1.7rem,3.4vw,3rem);
  --step-3:clamp(1.2rem,1.9vw,1.6rem);

  --edge:clamp(1.1rem,4vw,4.5rem);
  --shell:1600px;
  --radius:2px;
}

/* ---------- 3. BASE ---------- */
body{
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background-color:var(--c-night);
  background-image:
    linear-gradient(to right,rgba(31,107,79,.30) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,107,79,.30) 1px,transparent 1px);
  background-size:88px 88px;
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:400;line-height:1.06;letter-spacing:.006em;}
h1{font-size:var(--step-1);font-weight:300;}
h2{font-size:var(--step-2);font-weight:300;}
h3{font-size:var(--step-3);font-weight:500;}
::selection{background:var(--c-volt);color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-volt);outline-offset:3px;}

/* ---------- 4. LAYOUT PRIMITIVES ---------- */
.shell{width:min(var(--shell),100% - var(--edge)*2);margin-inline:auto;}
.shell--narrow{width:min(880px,100% - var(--edge)*2);margin-inline:auto;}

.section{position:relative;padding-block:clamp(2.6rem,7vw,6rem);}
.section--paper{background:var(--c-paper);color:var(--c-ink);}
.section--deep{background:var(--c-night-2);}
.section--ink{background:var(--c-ink);}
.section--diag{clip-path:polygon(0 2.6vw,100% 0,100% 100%,0 100%);}
.section--paper .eyebrow{color:var(--c-stop);}
.section--paper .prose{color:var(--c-ink-dim);}
.section--paper .prose strong{color:var(--c-ink);}
.section--paper .rule{background:rgba(11,12,14,.16);}
.section--paper .num{color:var(--c-stop);}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(.9rem,1.6vw,1.6rem);}
.span-3{grid-column:span 3;}
.span-4{grid-column:span 4;}
.span-6{grid-column:span 6;}
.span-8{grid-column:span 8;}
.span-9{grid-column:span 9;}
.span-12{grid-column:span 12;}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--f-mono);font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-volt);
}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor;opacity:.7;}
.num{font-family:var(--f-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;font-weight:600;}
.rule{width:100%;height:1px;background:var(--c-line);}
.prose{max-width:56ch;font-size:16.5px;line-height:1.8;color:var(--c-text-dim);}
.prose p + p{margin-top:1em;}
.prose strong{color:var(--c-text);font-weight:600;}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-text-dim);
}
.crumbs__item{display:inline-flex;align-items:center;}
.crumbs__item + .crumbs__item::before{content:"/";margin-right:.55rem;color:var(--c-grey);}
.crumbs a:hover{color:var(--c-volt);}
.crumbs [aria-current="page"]{color:var(--c-volt);}

/* ---------- 5. MEDIA ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  background:var(--c-night-2);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
}
.media img,.media video{width:100%;height:100%;object-fit:cover;}
.media--16x9{aspect-ratio:16/9;}
.media--4x3{aspect-ratio:4/3;}
.media--3x4{aspect-ratio:3/4;}
.media--1x1{aspect-ratio:1/1;}
.media--wide{aspect-ratio:21/9;}
.media--ph{
  background-color:var(--c-night-2);
  background-image:repeating-linear-gradient(135deg,rgba(31,107,79,.55) 0 2px,transparent 2px 12px);
}
.media__tag{
  position:absolute;left:0;bottom:0;
  background:var(--c-volt);color:var(--c-ink);
  font-family:var(--f-mono);font-size:10.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;
  padding:.3rem .65rem;
}

/* ---------- 6. COMPONENTS ---------- */
.plate{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.35rem .75rem;border-radius:var(--radius);
  font-family:var(--f-mono);font-size:12px;font-weight:600;letter-spacing:.06em;
  background:var(--c-stop);color:var(--c-ink);
  font-variant-numeric:tabular-nums;
}
.plate--volt{background:var(--c-volt);color:var(--c-ink);}
.plate--stop{background:var(--c-stop);color:var(--c-ink);}
.plate--lg{padding:.6rem 1.1rem;font-size:22px;letter-spacing:.04em;}
.brand-plate{width:44px;height:32px;padding:0;font-size:12px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.7rem 1.15rem;border:1px solid transparent;border-radius:var(--radius);
  font-family:var(--f-mono);font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
}
.btn--solid{background:var(--c-stop);color:var(--c-ink);}
.btn--solid:hover{background:var(--c-volt);}
.btn--ghost{background:var(--c-glass);border-color:var(--c-line);color:var(--c-text);}
.btn--ghost:hover{border-color:var(--c-volt);color:var(--c-volt);}
.btn--volt{background:var(--c-volt);color:var(--c-ink);}
.btn--volt:hover{background:var(--c-stop);}
.btn--sm{padding:.5rem .8rem;font-size:11px;}

.chip{
  display:inline-flex;align-items:center;gap:.5em;
  padding:.5rem .85rem;border:1px solid var(--c-line);border-radius:999px;
  background:var(--c-glass);color:var(--c-text-dim);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  transition:color .22s ease,border-color .22s ease,background-color .22s ease;
}
.chip:hover{color:var(--c-volt);border-color:var(--c-volt);}
.chip[aria-pressed="true"]{background:var(--c-volt);border-color:var(--c-volt);color:var(--c-ink);}
.chip__count{font-variant-numeric:tabular-nums;opacity:.6;}
.chip[aria-pressed="true"] .chip__count{opacity:.8;}

.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;}
.filter-bar__hint{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;color:var(--c-grey);}

.glass-strip{
  background:var(--c-glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  padding:.6rem .9rem;
}

.scroll-progress{
  position:fixed;left:0;top:0;height:3px;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-volt),var(--c-stop));
  z-index:120;pointer-events:none;
}

/* ---------- 7. HEADER ---------- */
.skip-link{
  position:absolute;left:var(--edge);top:-100px;z-index:200;
  background:var(--c-volt);color:var(--c-ink);
  font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;
  padding:.6rem 1rem;border-radius:var(--radius);
  transition:top .2s ease;
}
.skip-link:focus{top:.6rem;}

.site-header{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(180deg,rgba(11,12,14,.96),rgba(14,59,46,.90));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  color:var(--c-text);
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:-1px;
  width:22%;height:2px;background:var(--c-volt);
}
.header-inner{
  width:min(var(--shell),100% - var(--edge)*2);
  margin-inline:auto;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:clamp(1rem,2.5vw,2.5rem);
  padding-block:.75rem;
}

.brand-block{display:flex;flex-direction:column;gap:.35rem;min-width:0;}
.brand-mark{display:inline-flex;align-items:center;gap:.7rem;}
.brand-words{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-family:var(--f-display);font-size:19px;font-weight:500;letter-spacing:.05em;}
.brand-sub{
  font-family:var(--f-mono);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--c-grey);
}
.brand-utility{
  font-family:var(--f-mono);font-size:10.5px;letter-spacing:.1em;
  color:rgba(138,147,155,.88);
}

.header-clock{
  justify-self:center;
  display:flex;flex-direction:column;align-items:center;gap:.28rem;
  font-family:var(--f-mono);
}
.clock-label{font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--c-grey);}
.clock-value{font-size:15px;letter-spacing:.08em;color:var(--c-volt);}
.clock-bar{display:block;width:88px;height:3px;background:rgba(138,147,155,.25);overflow:hidden;}
.clock-bar i{display:block;height:100%;width:0;background:var(--c-stop);transition:width .4s ease;}

.site-nav{
  display:flex;align-items:center;justify-content:flex-end;
  gap:clamp(.8rem,2vw,2rem);
}
.site-nav__list{display:flex;align-items:center;flex-wrap:nowrap;gap:clamp(.35rem,1.1vw,1.1rem);}
.nav-link{
  display:inline-flex;align-items:baseline;gap:.4em;
  padding:.45rem .5rem;
  font-size:13.5px;letter-spacing:.06em;color:var(--c-text-dim);
  border-bottom:1px solid transparent;
  transition:color .22s ease,border-color .22s ease;
}
.nav-link:hover{color:var(--c-volt);border-bottom-color:var(--c-volt);}
.nav-link[aria-current="page"]{color:var(--c-volt);border-bottom-color:var(--c-volt);}
.nav-link__label{display:inline-block;}
.nav-link__idx{display:none;font-family:var(--f-mono);font-size:9.5px;letter-spacing:.1em;color:var(--c-grey);}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--c-stop);}

.site-nav__cta{display:flex;align-items:center;gap:.5rem;}
.site-nav__cta .btn--ghost{display:none;}

.nav-toggle{
  display:none;align-items:center;gap:.6rem;
  padding:.55rem .8rem;border:1px solid var(--c-line);border-radius:var(--radius);
  background:var(--c-glass);color:var(--c-text);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
}
.nav-toggle__label{display:inline-block;}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px;}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .3s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"]{color:var(--c-volt);border-color:var(--c-volt);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 8. FOOTER ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,8vw,6rem);
  padding:clamp(3.4rem,8vw,6.5rem) 0 2rem;
  background:var(--c-ink);
  color:var(--c-text);
  clip-path:polygon(0 2.6vw,100% 0,100% 100%,0 100%);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(to right,rgba(31,107,79,.75) 1px,transparent 1px);
  background-size:calc(100% / 12) 100%;
}
.footer-grid{
  position:relative;z-index:1;
  width:min(var(--shell),100% - var(--edge)*2);
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(240px,1.3fr) minmax(0,2fr) minmax(240px,1.1fr);
  gap:clamp(1.6rem,4vw,4rem);
  padding-bottom:clamp(2rem,4vw,3.5rem);
}
.footer-brand__name{font-family:var(--f-display);font-size:24px;font-weight:500;letter-spacing:.05em;}
.footer-brand__line{margin-top:.7rem;max-width:34ch;font-size:14px;line-height:1.75;color:var(--c-text-dim);}
.footer-brand__stamp{
  display:inline-block;margin-top:1rem;
  padding:.35rem .6rem;border:1px solid var(--c-line);
  font-family:var(--f-mono);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--c-volt);
}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1rem,2.5vw,2rem);}
.footer-group__title{
  padding-bottom:.7rem;border-bottom:1px solid rgba(31,107,79,.7);
  font-family:var(--f-mono);font-size:10.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--c-grey);
}
.footer-group__list{margin-top:.9rem;display:flex;flex-direction:column;gap:.55rem;}
.footer-link{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:14px;color:var(--c-text-dim);
  transition:color .2s ease;
}
.footer-link::before{
  content:"";width:10px;height:1px;background:var(--c-line);
  transition:width .2s ease,background-color .2s ease;
}
.footer-link:hover{color:var(--c-volt);}
.footer-link:hover::before{width:18px;background:var(--c-volt);}
.footer-link[aria-current="page"]{color:var(--c-volt);}
.footer-contact{display:flex;flex-direction:column;gap:.8rem;}
.footer-contact__line{
  font-family:var(--f-mono);font-size:12.5px;line-height:1.95;
  letter-spacing:.02em;color:var(--c-text-dim);word-break:break-word;
}
.footer-contact__note{
  padding-left:.7rem;border-left:2px solid var(--c-stop);
  font-size:12.5px;line-height:1.75;color:rgba(138,147,155,.95);
}
.footer-base{
  position:relative;z-index:1;
  width:min(var(--shell),100% - var(--edge)*2);
  margin-inline:auto;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:.7rem 1.5rem;
  padding-top:1.2rem;border-top:1px solid rgba(31,107,79,.7);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--c-grey);
}
.footer-base__legal{color:var(--c-grey);}
.footer-base__update{max-width:60ch;color:rgba(138,147,155,.8);}

/* ---------- 9. MOTION ---------- */
.has-js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .65s ease,transform .65s ease;}
.has-js [data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 10. RESPONSIVE ---------- */
@media (min-width:1280px){
  .site-nav__cta .btn--ghost{display:inline-flex;}
}
@media (min-width:1440px){
  .nav-link__idx{display:inline;}
}
@media (max-width:1279px){
  .brand-utility{display:none;}
}
@media (max-width:1080px){
  html.nav-open{overflow:hidden;}
  .header-inner{grid-template-columns:1fr auto;align-items:center;padding-block:.6rem;}
  .header-clock{display:none;}
  .brand-utility{display:none;}
  .nav-toggle{display:inline-flex;justify-self:end;}
  .site-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(420px,100%);
    z-index:80;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:1.6rem;
    padding:5.5rem var(--edge) 3rem;
    background:linear-gradient(180deg,rgba(11,12,14,.99),rgba(14,59,46,.98));
    border-left:1px solid var(--c-line);
    overflow-y:auto;overscroll-behavior:contain;
    transform:translateX(102%);visibility:hidden;
    transition:transform .32s cubic-bezier(.4,0,.2,1),visibility .32s;
  }
  .site-nav[data-open]{transform:translateX(0);visibility:visible;}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-link{
    justify-content:space-between;align-items:center;
    padding:1rem .2rem;font-size:17px;
    border-bottom:1px solid rgba(31,107,79,.5);
  }
  .nav-link__idx{display:inline;}
  .site-nav__cta{flex-direction:column;align-items:stretch;gap:.6rem;}
  .site-nav__cta .btn{width:100%;}
  .site-nav__cta .btn--ghost{display:inline-flex;}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
  .footer-nav{grid-column:1 / -1;}
  .footer-contact{grid-column:1 / -1;}
}
@media (max-width:900px){
  .span-3,.span-4{grid-column:span 6;}
  .span-6,.span-8,.span-9{grid-column:span 12;}
}
@media (max-width:700px){
  body{background-size:56px 56px;}
  .grid-12{gap:.8rem;}
}
@media (max-width:640px){
  .span-3,.span-4,.span-6{grid-column:span 12;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-nav{grid-template-columns:1fr;gap:1.6rem;}
  .footer-base{flex-direction:column;}
  .brand-name{font-size:17px;}
  .steps-none{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto;}
  .has-js [data-reveal]{opacity:1 !important;transform:none !important;}
}