/* ============================================================
   欧皇冠军体育 — 全站共享样式 /assets/site.css
   深墨绿主场 · 冠军金框架 · 电光青数据 · 暖橙更新
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#061A14;
  --ink-2:#0C3529;
  --ink-3:#0A2A21;
  --gold:#D8A84E;
  --gold-lt:#F4D88A;
  --gold-line:#9C6B25;
  --cyan:#2CE0C2;
  --orange:#FF8A3D;
  --cream:#F4EFE3;
  --moss:#7A968B;

  --rule:rgba(156,107,37,.42);
  --rule-soft:rgba(156,107,37,.22);

  --ff:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ff-num:ui-monospace,"JetBrains Mono","SFMono-Regular","Cascadia Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --fs-label:.6875rem;
  --wrap:1320px;
  --gutter:clamp(1.125rem,4vw,3.5rem);
  --header-h:76px;
  --ease:cubic-bezier(.22,.61,.24,1);
  --scroll-progress:0;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol,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;transition:color .18s var(--ease),border-color .18s var(--ease)}
hr{border:0}

/* ---------- 3. Base typography ---------- */
html,body{height:auto}
body{
  margin:0;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:
    radial-gradient(1100px 560px at 84% -12%, rgba(44,224,194,.07), transparent 62%),
    radial-gradient(920px 520px at 4% -6%, rgba(216,168,78,.09), transparent 64%),
    var(--ink);
  color:var(--cream);
  font-family:var(--ff);
  font-size:clamp(1rem,.34vw + .93rem,1.125rem);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body > main{flex:1 0 auto}

h1,h2,h3,h4{font-weight:300;line-height:1.12;letter-spacing:.015em;color:var(--cream)}
h1{font-size:clamp(2.5rem,7.4vw,7rem)}
h2{font-size:clamp(1.75rem,4vw,3.25rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.75rem)}
h4{font-size:1.0625rem;letter-spacing:.06em;font-weight:500}
p{max-width:42ch}
strong{font-weight:600;color:var(--gold-lt)}
small{font-size:.8125rem;color:var(--moss)}

::selection{background:var(--gold);color:var(--ink)}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:1px;
}

/* ---------- 4. Layout utilities ---------- */
.wrap{
  width:min(100% - 1.5rem, var(--wrap));
  margin-inline:auto;
}
.section{padding-block:clamp(2.75rem,6vw,5.5rem)}
.section--tight{padding-block:clamp(1.75rem,3.5vw,3rem)}

.grid{
  display:grid;
  gap:clamp(1rem,2.4vw,2rem);
  grid-template-columns:repeat(var(--cols,1),minmax(0,1fr));
}

.rule{
  height:1px;
  border:0;
  background:linear-gradient(90deg,var(--gold-line),rgba(156,107,37,0));
  margin-block:clamp(1.5rem,3vw,2.5rem);
}

/* ---------- 5. Skip link ---------- */
.skip-link{
  position:fixed;
  top:.5rem;
  left:.5rem;
  z-index:400;
  padding:.7rem 1.15rem;
  background:var(--gold);
  color:var(--ink);
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.12em;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 6. Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,26,20,.94);
  border-bottom:1px solid var(--gold-line);
  backdrop-filter:blur(12px) saturate(125%);
  -webkit-backdrop-filter:blur(12px) saturate(125%);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header[data-scrolled]{
  background:rgba(6,26,20,.985);
  box-shadow:0 14px 34px -22px rgba(0,0,0,.95);
}

.header-frame{
  width:min(100% - 1.5rem, var(--wrap));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(.75rem,2vw,2rem);
  min-height:var(--header-h);
  padding-block:.65rem;
}

/* 品牌 */
.brand{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:.7rem;
  padding:.2rem 0;
}
.brand-mark{
  position:relative;
  flex:0 0 auto;
  width:2rem;
  height:2rem;
  display:grid;
  place-items:center;
  border:1px solid var(--gold-line);
  background:radial-gradient(circle at 50% 130%, rgba(216,168,78,.3), transparent 64%);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.brand-mark::after{
  content:"";
  width:.5rem;
  height:.5rem;
  border:1px solid var(--gold);
  transform:rotate(45deg);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.brand:hover .brand-mark,
.brand:focus-visible .brand-mark{border-color:var(--gold)}
.brand:hover .brand-mark::after,
.brand:focus-visible .brand-mark::after{background:var(--gold-lt);border-color:var(--gold-lt)}
.brand-text{display:block;min-width:0}
.brand-name{
  display:block;
  font-size:1.0625rem;
  font-weight:600;
  letter-spacing:.1em;
  line-height:1.2;
  color:var(--cream);
}
.brand-tagline{
  display:block;
  margin-top:.15rem;
  font-size:.625rem;
  letter-spacing:.18em;
  line-height:1.4;
  color:var(--moss);
}

/* 导航 */
.site-nav{
  flex:1 1 auto;
  display:flex;
  justify-content:center;
}
.site-nav-list{
  display:flex;
  align-items:center;
  gap:clamp(.15rem,1.3vw,1.4rem);
}
.site-nav-list a{
  position:relative;
  display:block;
  padding:.6rem .5rem;
  font-size:.9375rem;
  letter-spacing:.06em;
  white-space:nowrap;
  color:rgba(244,239,227,.7);
  transition:color .18s var(--ease);
}
.site-nav-list a::after{
  content:"";
  position:absolute;
  left:.5rem;
  right:.5rem;
  bottom:.25rem;
  height:1px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.site-nav-list a:hover,
.site-nav-list a:focus-visible{color:var(--cream)}
.site-nav-list a:hover::after,
.site-nav-list a:focus-visible::after{transform:scaleX(1)}
.site-nav-list a[aria-current="page"]{color:var(--gold-lt)}
.site-nav-list a[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--gold-lt);
}

/* 头部 CTA */
.header-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:.45rem 1.15rem;
  border:1px solid var(--gold-line);
  background:linear-gradient(180deg,rgba(216,168,78,.16),rgba(216,168,78,0));
  color:var(--gold-lt);
  font-size:.8125rem;
  letter-spacing:.14em;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.header-cta:hover,
.header-cta:focus-visible{
  background:var(--gold);
  border-color:var(--gold);
  color:var(--ink);
}

/* 移动端菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.45rem;
  min-height:40px;
  padding:.4rem .8rem;
  border:1px solid var(--rule);
  color:var(--cream);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold-line)}
.nav-toggle-bar{
  display:block;
  width:16px;
  height:1px;
  background:var(--gold);
  transition:transform .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){transform:translateY(-2px) rotate(-45deg)}
.nav-toggle-text{
  font-size:.75rem;
  letter-spacing:.16em;
  color:var(--moss);
}

/* 滚动进度 */
.scroll-meter{
  position:absolute;
  left:0;
  bottom:-1px;
  z-index:2;
  width:100%;
  height:2px;
  transform:scaleX(var(--scroll-progress));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--gold) 58%,var(--orange));
  transition:transform .1s linear;
  pointer-events:none;
}

/* ---------- 7. Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  min-height:44px;
  padding:.6rem 1.4rem;
  border:1px solid var(--gold-line);
  background:transparent;
  color:var(--gold-lt);
  font-size:.8125rem;
  letter-spacing:.14em;
  text-align:center;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:hover,
.btn:focus-visible{background:var(--gold);border-color:var(--gold);color:var(--ink)}
.btn--solid{background:var(--gold);border-color:var(--gold);color:var(--ink)}
.btn--solid:hover,
.btn--solid:focus-visible{background:var(--gold-lt);border-color:var(--gold-lt);color:var(--ink)}
.btn--ghost{border-color:rgba(244,239,227,.28);color:var(--cream)}
.btn--ghost:hover,
.btn--ghost:focus-visible{background:transparent;border-color:var(--gold);color:var(--gold-lt)}
.btn--cyan{border-color:var(--cyan);color:var(--cyan)}
.btn--cyan:hover,
.btn--cyan:focus-visible{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}

/* ---------- 8. Labels / tags / numbers ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  font-size:var(--fs-label);
  font-weight:500;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--gold);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--gold-line);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.22rem .62rem;
  border:1px solid var(--rule);
  font-size:.6875rem;
  letter-spacing:.14em;
  line-height:1.6;
  color:var(--gold-lt);
  background:rgba(244,239,227,.04);
}
.tag--cyan{border-color:rgba(44,224,194,.5);color:var(--cyan);background:rgba(44,224,194,.06)}
.tag--orange{border-color:rgba(255,138,61,.55);color:var(--orange);background:rgba(255,138,61,.06)}

.num{
  font-family:var(--ff-num);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  letter-spacing:.04em;
}

/* ---------- 9. Panel ---------- */
.panel{
  position:relative;
  padding:clamp(1.25rem,2.4vw,2rem);
  border:1px solid var(--rule-soft);
  background:linear-gradient(158deg,var(--ink-2),rgba(12,53,41,.5));
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.panel:hover{border-color:var(--gold-line)}

/* ---------- 10. Breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  padding-block:.25rem;
  font-size:.75rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--moss);
}
.breadcrumb li{display:flex;align-items:center;gap:.45rem}
.breadcrumb li + li::before{
  content:"/";
  color:var(--gold-line);
}
.breadcrumb a{color:var(--moss)}
.breadcrumb a:hover,
.breadcrumb a:focus-visible{color:var(--gold-lt)}

/* ---------- 11. Media frame（页面阶段放入 <img>） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--gold-line);
  background:
    radial-gradient(circle at 28% 18%, rgba(44,224,194,.16), transparent 56%),
    linear-gradient(152deg,var(--ink-2),var(--ink) 88%);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.72) contrast(1.04);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  max-width:80%;
  padding:.5rem .85rem;
  background:rgba(6,26,20,.86);
  border-top:1px solid var(--gold-line);
  border-right:1px solid var(--gold-line);
  font-size:.6875rem;
  letter-spacing:.14em;
  line-height:1.6;
  color:var(--gold-lt);
}

/* ---------- 12. Reveal ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.has-js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 13. Footer ---------- */
.site-footer{
  margin-top:auto;
  position:relative;
  border-top:1px solid var(--gold-line);
  background:linear-gradient(180deg,var(--ink-2) 0%,var(--ink) 94%);
  padding-block:clamp(2rem,5vw,3.5rem) 1.75rem;
}
.footer-inner{
  width:min(100% - 1.5rem, var(--wrap));
  margin-inline:auto;
}

.footer-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1.25rem 2rem;
  padding-bottom:1.5rem;
  border-bottom:1px solid var(--rule-soft);
}
.footer-brand{display:block;min-width:0}
.footer-brand-name{
  display:block;
  font-size:clamp(1.25rem,2.4vw,1.75rem);
  font-weight:300;
  letter-spacing:.07em;
  line-height:1.2;
  color:var(--gold-lt);
}
.footer-brand-line{
  display:block;
  margin-top:.45rem;
  max-width:36ch;
  font-size:.875rem;
  letter-spacing:.04em;
  line-height:1.7;
  color:var(--moss);
}
.footer-cta{flex:0 0 auto}

.footer-nav{margin-top:clamp(1.5rem,3vw,2rem)}
.footer-nav-label{
  font-size:var(--fs-label);
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--moss);
}
.footer-track{
  display:flex;
  align-items:center;
  margin-top:.9rem;
  padding-bottom:.9rem;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:var(--gold-line) transparent;
}
.footer-track::-webkit-scrollbar{height:3px}
.footer-track::-webkit-scrollbar-track{background:rgba(156,107,37,.16)}
.footer-track::-webkit-scrollbar-thumb{background:var(--gold-line)}
.footer-track li{
  position:relative;
  flex:0 0 auto;
  padding-left:1.15rem;
  padding-right:2.75rem;
}
.footer-track li::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:6px;
  height:6px;
  transform:translateY(-50%) rotate(45deg);
  background:var(--gold-line);
  transition:background .2s var(--ease);
}
.footer-track li::after{
  content:"";
  position:absolute;
  right:0;
  top:50%;
  width:1.6rem;
  height:1px;
  background:var(--rule-soft);
}
.footer-track li:last-child{padding-right:1.15rem}
.footer-track li:last-child::after{display:none}
.footer-track a{
  font-size:.9375rem;
  letter-spacing:.05em;
  white-space:nowrap;
  color:rgba(244,239,227,.78);
}
.footer-track li:hover::before,
.footer-track li:focus-within::before{background:var(--cyan)}
.footer-track a:hover,
.footer-track a:focus-visible{color:var(--gold-lt)}

.footer-meta{
  margin-top:1.5rem;
  padding-top:1.5rem;
  border-top:1px solid var(--rule-soft);
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.7rem 2.25rem;
  font-size:.8125rem;
  line-height:1.7;
  letter-spacing:.02em;
  color:var(--moss);
}
.footer-contact{
  flex:1 1 22rem;
  font-family:var(--ff-num);
  letter-spacing:.01em;
  color:rgba(244,239,227,.72);
}
.footer-note{flex:1 1 24rem;max-width:52ch}
.footer-legal{
  display:flex;
  align-items:center;
  gap:.55rem;
  flex:0 0 auto;
}
.footer-legal a{
  color:var(--moss);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-legal a:hover,
.footer-legal a:focus-visible{color:var(--gold-lt);border-bottom-color:var(--gold-line)}
.footer-copy{
  flex:0 0 auto;
  font-family:var(--ff-num);
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--moss);
  white-space:nowrap;
}

/* ---------- 14. Responsive ---------- */
@media (max-width:1100px){
  .brand-tagline{display:none}
}

@media (max-width:900px){
  :root{--header-h:66px}

  .header-frame{gap:.75rem;padding-block:.6rem}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-cta{display:none}

  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:block;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:.5rem clamp(1rem,5vw,2rem) 1.5rem;
    border-bottom:1px solid var(--gold-line);
    background:linear-gradient(180deg,var(--ink-2),var(--ink) 92%);
    opacity:0;
    visibility:hidden;
    transform:translateY(-.45rem);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .site-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .site-nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav-list a{
    padding:.95rem .25rem;
    font-size:1rem;
    letter-spacing:.08em;
    border-bottom:1px solid var(--rule-soft);
  }
  .site-nav-list a::after{display:none}
  .site-nav-list a[aria-current="page"]{color:var(--gold)}
  .site-nav-list a[aria-current="page"]::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    margin-right:.6rem;
    vertical-align:middle;
    transform:rotate(45deg);
    background:var(--gold);
  }

  .footer-head{align-items:flex-start}
  .footer-meta{gap:.6rem 1.5rem}
  .footer-copy{white-space:normal}
}

@media (max-width:560px){
  .brand-name{font-size:.975rem;letter-spacing:.08em}
  .brand-mark{width:1.75rem;height:1.75rem}
  .footer-track li{padding-right:2rem;padding-left:1rem}
  .footer-track li::after{width:1.1rem}
  .btn{width:100%}
  .footer-cta{width:auto}
}

/* ---------- 15. Motion & print ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
  .scroll-meter{transition:none}
}