/* ============================================================
   多米体育看台 · 全站共享样式 /assets/site.css
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#0B1F1A;
  --ink-2:#122E27;
  --ink-3:#1B3D34;
  --lime:#C6FF3D;
  --orange:#FF7A2F;
  --paper:#F5F7F4;
  --white:#EAF2EE;
  --mist:#9FB8AE;
  --grid:#4D6B60;
  --cyan:#6EE7FF;

  --rail:88px;
  --maxw:1320px;
  --gutter:clamp(20px,3vw,48px);

  --font-display:"Barlow Condensed","Arial Narrow","Helvetica Neue",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--white);
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(77,107,96,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(77,107,96,.16) 1px,transparent 1px);
  background-size:96px 96px;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
::selection{background:var(--lime);color:var(--ink);}
:where(a,button,input,select,textarea,[tabindex]):focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
#main-content{scroll-margin-top:84px;display:block;min-height:60vh;}

/* ---------- 3. Typography ---------- */
h1,h2,h3,h4{
  margin:0 0 .55em;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--white);
  text-wrap:balance;
}
h1{font-size:clamp(2.4rem,5vw,4.2rem);}
h2{font-size:clamp(1.6rem,2.8vw,2.4rem);}
h3{font-size:clamp(1.15rem,1.9vw,1.5rem);letter-spacing:0;line-height:1.2;}
h4{font-size:1rem;letter-spacing:.02em;line-height:1.3;}
small{font-size:12px;color:var(--mist);}

/* ---------- 4. Utilities ---------- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.num,[data-num]{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.01em;
}
.label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  line-height:1;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--mist);
}
.label::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--lime);
  flex:0 0 auto;
}
.dot{
  display:inline-block;
  width:6px;
  height:6px;
  background:var(--lime);
  flex:0 0 auto;
}
.rule{
  height:1px;
  border:0;
  margin:0;
  background:rgba(77,107,96,.45);
}
.cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}

/* ---------- 5. Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 26px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1.1;
  text-align:center;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--primary{background:var(--orange);color:var(--ink);}
.btn--primary:hover{background:var(--lime);color:var(--ink);}
.btn--lime{background:var(--lime);color:var(--ink);}
.btn--lime:hover{background:var(--white);color:var(--ink);}
.btn--ghost{background:transparent;color:var(--white);border-color:var(--grid);}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);}
.btn:active{transform:translateY(1px);}

/* ---------- 6. Breadcrumbs ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}
.crumbs a{
  color:var(--mist);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.crumbs a:hover{color:var(--lime);border-bottom-color:var(--lime);}
.crumbs__sep{color:var(--grid);line-height:1;}

/* ---------- 7. Layout helpers ---------- */
.grid12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
}
.split{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(24px,4vw,64px);
  align-items:start;
}
.split--flip{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}

/* ---------- 8. Media containers ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--ink-2);
  border:1px solid var(--grid);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(135deg,rgba(198,255,61,.07) 0 2px,transparent 2px 12px);
  pointer-events:none;
}
.media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--ratio-16-9{aspect-ratio:16/9;}
.media--ratio-4-3{aspect-ratio:4/3;}
.media--ratio-1-1{aspect-ratio:1/1;}
.media--ratio-3-4{aspect-ratio:3/4;}
.media__tag{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:6px 12px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-display);
  font-size:11px;
  font-weight:800;
  letter-spacing:.1em;
  text-transform:uppercase;
}

/* ---------- 9. Reveal ---------- */
[data-reveal]{
  opacity:1;
  transform:none;
}
html.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
html.js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ============================================================
   10. Header — side rail (desktop) / top bar + drawer (mobile)
   ============================================================ */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 18px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:800;
  font-size:14px;
  letter-spacing:.04em;
  transform:translateY(-160%);
  transition:transform .18s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0);}

.site-header{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--rail);
  z-index:90;
}

.rail{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  height:100%;
  padding:18px 0 16px;
  background:var(--ink);
  border-right:1px solid rgba(77,107,96,.45);
}

.rail__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  padding-bottom:18px;
  color:var(--white);
}
.rail__brand-mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  border:1px solid var(--lime);
  color:var(--lime);
  background:linear-gradient(135deg,rgba(198,255,61,.16),transparent 62%);
  font-family:var(--font-display);
  font-size:22px;
  font-weight:800;
  line-height:1;
}
.rail__brand-text{
  writing-mode:vertical-rl;
  font-size:11px;
  letter-spacing:.28em;
  color:var(--mist);
  text-transform:uppercase;
}

.rail__nav{
  width:100%;
  flex:1 1 auto;
}
.rail__list{
  display:flex;
  flex-direction:column;
}
.rail__link{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  height:54px;
  color:var(--mist);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.rail__num{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
}
.rail__label{
  position:absolute;
  left:100%;
  top:0;
  z-index:3;
  display:flex;
  align-items:center;
  height:100%;
  padding:0 20px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  white-space:nowrap;
  opacity:0;
  transform:translateX(-8px);
  pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.rail__link:hover,
.rail__link:focus-visible{
  color:var(--white);
  background:var(--ink-3);
}
.rail__link:hover .rail__label,
.rail__link:focus-visible .rail__label{
  opacity:1;
  transform:translateX(0);
}
.rail__link[aria-current="page"]{
  color:var(--lime);
}
.rail__link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:22px;
  background:var(--lime);
  transform:translateY(-50%);
}

.rail__aside{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  padding-top:14px;
}
.rail__cta{
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:136px;
  background:var(--orange);
  color:var(--ink);
  writing-mode:vertical-rl;
  font-family:var(--font-display);
  font-weight:800;
  font-size:13px;
  letter-spacing:.16em;
  transition:background-color .2s var(--ease);
}
.rail__cta:hover{background:var(--lime);}
.rail__meta{
  margin:0;
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--grid);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 11px;
  background:transparent;
  border:1px solid var(--grid);
  color:var(--white);
  cursor:pointer;
  font-family:var(--font-display);
  font-size:12px;
  font-weight:800;
  letter-spacing:.14em;
}
.nav-toggle__box{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:18px;
}
.nav-toggle__bar{
  display:block;
  height:2px;
  background:var(--lime);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.rail[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg);}
.rail[data-open] .nav-toggle__bar:nth-child(2){opacity:0;}
.rail[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.site-header[data-scrolled] .rail{
  box-shadow:0 1px 0 rgba(198,255,61,.28);
}

/* ============================================================
   11. Footer
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(64px,8vw,120px);
  background:var(--ink);
  border-top:1px solid var(--grid);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:min(32%,420px);
  height:3px;
  background:var(--lime);
}
.footer__slope{
  position:absolute;
  top:0;
  right:0;
  width:min(46%,560px);
  height:1px;
  background:linear-gradient(90deg,transparent,var(--orange));
  transform-origin:right top;
  transform:rotate(-7deg);
  pointer-events:none;
}
.footer__inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(40px,5vw,72px) var(--gutter) 26px;
  position:relative;
  z-index:1;
}
.footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,2fr);
  gap:clamp(32px,5vw,80px);
  padding-bottom:clamp(30px,4vw,52px);
  border-bottom:1px solid rgba(77,107,96,.42);
}
.footer__brand{min-width:0;}
.footer__wordmark{
  margin:0 0 6px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.45rem,2.6vw,2.1rem);
  line-height:1.1;
  letter-spacing:-.01em;
  color:var(--white);
}
.footer__wordmark::after{
  content:"";
  display:block;
  width:52px;
  height:3px;
  margin-top:14px;
  background:var(--lime);
}
.footer__statement{
  margin:18px 0 16px;
  max-width:30ch;
  font-size:15px;
  line-height:1.7;
  color:var(--mist);
}
.footer__signal{
  display:flex;
  align-items:center;
  gap:9px;
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--lime);
}
.footer__nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,40px);
  min-width:0;
}
.footer__group{min-width:0;}
.footer__title{
  margin:0 0 16px;
  font-family:var(--font-display);
  font-size:12px;
  font-weight:800;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--lime);
}
.footer__list{
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer__list a{
  display:inline-block;
  font-size:14px;
  line-height:1.5;
  color:var(--white);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer__list a:hover,
.footer__list a:focus-visible{
  color:var(--lime);
  border-bottom-color:var(--lime);
}
.footer__contact{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
  padding:clamp(26px,3.4vw,44px) 0;
  border-bottom:1px solid rgba(77,107,96,.42);
}
.footer__cell{min-width:0;}
.footer__key{
  margin:0 0 7px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--grid);
}
.footer__val{
  margin:0;
  font-size:14px;
  line-height:1.6;
  color:var(--white);
  overflow-wrap:anywhere;
}
.footer__val--mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.footer__note{
  grid-column:1/-1;
  margin:4px 0 0;
  max-width:74ch;
  font-size:12.5px;
  line-height:1.75;
  color:var(--mist);
}
.footer__meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-top:22px;
  font-size:12px;
  color:var(--mist);
}
.footer__copy{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
}
.footer__sig{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--grid);
}

/* ============================================================
   12. Responsive
   ============================================================ */
@media (min-width:900px){
  body{padding-left:var(--rail);}
}
@media (min-width:900px) and (max-height:720px){
  .rail__link{height:46px;}
  .rail__cta{height:104px;}
  .rail__brand-text{display:none;}
  .rail__brand{padding-bottom:10px;}
}

@media (max-width:1024px){
  .footer__grid{grid-template-columns:minmax(0,1fr);}
  .footer__nav{grid-template-columns:repeat(3,minmax(0,1fr));}
}

@media (max-width:899px){
  .site-header{
    position:sticky;
    top:0;
    left:auto;
    bottom:auto;
    width:100%;
    height:64px;
  }
  .rail{
    flex-direction:row;
    align-items:center;
    gap:12px;
    height:64px;
    padding:0 16px;
    border-right:0;
    border-bottom:1px solid rgba(77,107,96,.5);
  }
  .rail__brand{
    flex-direction:row;
    align-items:center;
    gap:10px;
    margin-right:auto;
    padding:0;
  }
  .rail__brand-mark{
    width:34px;
    height:34px;
    font-size:17px;
  }
  .rail__brand-text{
    writing-mode:horizontal-tb;
    font-size:11px;
    letter-spacing:.22em;
    color:var(--white);
  }
  .rail__nav{
    position:fixed;
    top:64px;
    left:0;
    right:0;
    width:auto;
    max-height:calc(100dvh - 64px);
    overflow-y:auto;
    padding:4px 0 20px;
    background:var(--ink-2);
    border-bottom:2px solid var(--lime);
    box-shadow:0 24px 48px rgba(0,0,0,.45);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
    z-index:80;
  }
  .rail[data-open] .rail__nav{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .rail__list{flex-direction:column;}
  .rail__link{
    justify-content:flex-start;
    gap:14px;
    height:auto;
    padding:15px 20px;
    border-bottom:1px solid rgba(77,107,96,.35);
  }
  .rail__link:hover,
  .rail__link:focus-visible{background:rgba(198,255,61,.08);color:var(--white);}
  .rail__num{font-size:12px;color:var(--grid);}
  .rail__label{
    position:static;
    opacity:1;
    transform:none;
    height:auto;
    padding:0;
    background:none;
    color:var(--white);
    font-size:16px;
    pointer-events:auto;
  }
  .rail__link:hover .rail__label,
  .rail__link:focus-visible .rail__label{color:var(--white);}
  .rail__link[aria-current="page"]{background:rgba(198,255,61,.1);}
  .rail__link[aria-current="page"] .rail__label{color:var(--lime);}
  .rail__link[aria-current="page"]::before{
    top:0;
    left:0;
    width:3px;
    height:100%;
    transform:none;
  }
  .rail__aside{display:none;}
  .nav-toggle{display:inline-flex;flex:0 0 auto;}

  .split,
  .split--flip{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:768px){
  body{font-size:15.5px;}
  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__contact{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__meta{flex-direction:column;align-items:flex-start;gap:6px;}
  .footer__sig{margin-left:0;}
}

@media (max-width:480px){
  .footer__contact{grid-template-columns:minmax(0,1fr);}
  .btn{width:100%;}
}

/* ============================================================
   13. Reduced motion
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  html.js [data-reveal]{opacity:1;transform:none;}
  .rail__label{transform:none;}
}