/* =========================================================
   01体育赛场 · 共享样式 /assets/site.css
   基调：深夜赛场数据舱（深绿底 + 电子蓝结构 + 橙/红/薄荷状态）
   ========================================================= */

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

/* ---------- 2 tokens ---------- */
:root{
  --ink:#05170F;
  --panel:#0B2A1F;
  --line:#17453A;
  --blue-deep:#0A2B45;
  --blue:#2E7BFF;
  --orange:#FF7A18;
  --red:#FF3B47;
  --mint:#7DFFB0;
  --text:#E9F5EF;
  --muted:#9FBBAE;
  --white:#FFFFFF;

  --r-xs:10px;
  --r-sm:14px;
  --r-md:18px;
  --r-lg:26px;
  --maxw:1440px;
  --gutter:clamp(16px,3vw,40px);
  --hdr-h:78px;
  --ease:cubic-bezier(.22,.7,.25,1);
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --ff-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- 3 base ---------- */
body{
  min-height:100vh;
  font-family:var(--ff-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 10% -12%, rgba(46,123,255,.17), transparent 62%),
    radial-gradient(900px 520px at 100% -4%, rgba(255,122,24,.10), transparent 58%),
    radial-gradient(760px 460px at 50% 112%, rgba(125,255,176,.07), transparent 62%),
    repeating-linear-gradient(0deg, rgba(23,69,58,.18) 0 1px, transparent 1px 64px);
  background-attachment:fixed;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.16;color:var(--white)}
h1{font-size:clamp(38px,5.2vw,72px)}
h2{font-size:clamp(26px,3vw,40px)}
h3{font-size:clamp(19px,1.8vw,24px)}
h4{font-size:18px}
p{font-size:17px;color:var(--text)}
strong{color:var(--white)}
::selection{background:var(--orange);color:var(--ink)}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px}

/* ---------- 4 layout helpers ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.section-rule{height:1px;background:var(--line);border:0;margin:clamp(28px,4vw,56px) 0}
.num{font-family:var(--ff-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--ff-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--mint);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--blue);flex:none}

/* ---------- 5 buttons & crumbs ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform 180ms var(--ease),background-color 180ms var(--ease),
             border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn--primary{background:var(--orange);color:var(--ink)}
.btn--primary:hover{transform:translateY(-3px)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn--ghost:hover{color:var(--mint);border-color:var(--mint);transform:translateY(-3px)}

.breadcrumb{margin:clamp(14px,2vw,22px) 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb-item{
  font-family:var(--ff-mono);font-size:12.5px;letter-spacing:.06em;color:var(--muted);
}
.breadcrumb-item + .breadcrumb-item::before{content:"/";padding-right:6px;color:var(--line)}
.breadcrumb-link{color:var(--muted);border-bottom:1px solid transparent}
.breadcrumb-link:hover{color:var(--mint);border-bottom-color:var(--mint)}

/* ---------- 6 media frames (页面阶段放图) ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-md);
  background-image:
    radial-gradient(120% 120% at 18% 0%, rgba(46,123,255,.18), transparent 62%),
    linear-gradient(180deg,var(--panel),#071C14);
}
.media-frame img,.media-frame picture,.media-frame video{
  width:100%;height:100%;object-fit:cover;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,23,15,0) 52%,rgba(5,23,15,.72));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--hero{aspect-ratio:16/10}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--skew{border-radius:26px 8px 26px 8px}

/* ---------- 7 reveal ---------- */
.reveal{
  opacity:0;transform:translateY(14px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 8 skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-180%);
  padding:10px 18px;border-radius:var(--r-xs);
  background:var(--mint);color:var(--ink);
  font-size:14px;font-weight:700;
  transition:transform 180ms var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 9 header frame ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background-image:linear-gradient(180deg,#0A2118 0%,#05170F 100%);
  border-bottom:1px solid var(--line);
}
.hdr-frame{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.hdr-inner{
  display:grid;
  grid-template-columns:minmax(0,auto) minmax(0,1fr) minmax(0,auto);
  align-items:center;
  gap:clamp(12px,2vw,32px);
  min-height:var(--hdr-h);
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  position:relative;width:32px;height:32px;flex:none;
  border-radius:11px 5px 11px 5px;
  background-image:linear-gradient(140deg,var(--blue),var(--mint));
}
.brand-mark::after{
  content:"";position:absolute;top:50%;left:50%;
  width:9px;height:9px;margin:-4.5px 0 0 -4.5px;
  border-radius:50%;background:var(--ink);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--white)}
.brand-tag{font-size:12px;letter-spacing:.04em;color:var(--muted)}

.site-nav{justify-self:center}
.nav-list{display:flex;align-items:center;gap:clamp(6px,1.5vw,24px)}
.nav-item{list-style:none}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:12px 4px;font-size:15px;letter-spacing:.02em;color:var(--text);
  transition:color 180ms var(--ease);
}
.nav-link::before{
  content:attr(data-idx);
  font-family:var(--ff-mono);font-size:10px;letter-spacing:.18em;
  color:var(--mint);opacity:.5;
  transition:opacity 180ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;
  background-image:linear-gradient(90deg,var(--blue),var(--mint));
  transform:scaleX(0);transform-origin:left;
  transition:transform 200ms var(--ease);
}
.nav-link:hover{color:var(--white)}
.nav-link:hover::before{opacity:1}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--white)}
.nav-link[aria-current="page"]::before{opacity:1;color:var(--orange)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.site-header.is-compact .brand-tag{display:none}
.site-header.is-compact .nav-link::before{opacity:1}

.nav-extra{display:none}
.nav-extra-link{
  display:block;padding:12px 2px;font-size:15px;color:var(--muted);
  border-bottom:1px solid var(--line);
  transition:color 180ms var(--ease);
}
.nav-extra-link:hover{color:var(--mint)}

.hdr-actions{justify-self:end;display:flex;align-items:center;gap:10px}
.pulse-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 13px;border-radius:999px;
  border:1px solid var(--line);background-color:var(--panel);
  font-family:var(--ff-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
  white-space:nowrap;
}
.pulse-dot{position:relative;width:8px;height:8px;flex:none;border-radius:50%;background:var(--red)}
.pulse-dot::after{
  content:"";position:absolute;inset:-4px;border-radius:50%;
  border:1px solid var(--red);opacity:.7;
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{
  0%{transform:scale(.6);opacity:.8}
  70%{transform:scale(1.5);opacity:0}
  100%{transform:scale(1.5);opacity:0}
}
.cta-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;
  background-color:var(--orange);color:var(--ink);
  font-size:14px;font-weight:800;letter-spacing:.01em;white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.cta-btn::after{content:"→";font-family:var(--ff-mono);font-size:14px}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px -12px rgba(255,122,24,.85)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 14px;border-radius:var(--r-sm);
  border:1px solid var(--line);background-color:var(--panel);color:var(--text);
}
.nav-toggle-bar{position:relative;width:16px;height:2px;background-color:currentColor;transition:background-color 160ms linear}
.nav-toggle-bar::before,
.nav-toggle-bar::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background-color:currentColor;
  transition:transform 200ms var(--ease);
}
.nav-toggle-bar::before{top:-5px}
.nav-toggle-bar::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar{background-color:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle-label{font-size:12px;letter-spacing:.12em;font-family:var(--ff-mono)}

.progress-rail{height:2px;background-color:var(--line);overflow:hidden}
.progress-fill{
  display:block;width:0;height:100%;
  background-image:linear-gradient(90deg,var(--blue),var(--mint),var(--orange));
  transition:width 160ms linear;
}

/* ---------- 10 footer ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:clamp(48px,7vw,96px);
  background-image:linear-gradient(180deg,var(--blue-deep) 0%,#061B29 100%);
  border-top:1px solid var(--line);
  color:var(--text);
}
.ftr-grid{
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(34px,5vw,64px) var(--gutter) clamp(18px,2vw,26px);
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:clamp(20px,3vw,44px);
}
.ftr-brand .brand-name{font-size:19px}
.site-footer .brand-tag{display:none}
.ftr-line{margin:16px 0 14px;max-width:36em;font-size:14px;line-height:1.8;color:var(--muted)}
.ftr-badge{
  display:inline-block;padding:6px 13px;border-radius:999px;
  border:1px solid var(--line);background-color:rgba(125,255,176,.06);
  font-family:var(--ff-mono);font-size:12px;letter-spacing:.06em;color:var(--mint);
}
.ftr-col{min-width:0}
.ftr-group-title{
  margin-bottom:16px;
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--mint);
}
.ftr-list{display:grid;gap:11px}
.ftr-item{font-size:15px;color:var(--text)}
.ftr-item.is-text{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted)}
.ftr-dot{width:6px;height:6px;flex:none;border-radius:50%;background-color:var(--mint)}
.ftr-link{
  color:var(--text);border-bottom:1px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.ftr-link:hover{color:var(--mint);border-bottom-color:var(--mint)}

.ftr-meta{
  max-width:var(--maxw);margin:0 auto;
  padding:18px var(--gutter);
  border-top:1px solid var(--line);
}
.ftr-contact{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  font-size:14px;color:var(--muted);
}
.ftr-label{
  font-family:var(--ff-mono);font-size:12px;letter-spacing:.14em;color:var(--mint);
}
.copy-value{font-family:var(--ff-mono);font-variant-numeric:tabular-nums;color:var(--text)}
.copy-btn{
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background-color:transparent;
  font-size:12px;letter-spacing:.06em;color:var(--muted);
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.copy-btn:hover{color:var(--orange);border-color:var(--orange)}
.copy-btn[data-copied="true"]{color:var(--mint);border-color:var(--mint)}
.ftr-addr,.ftr-hours{font-size:13.5px;color:var(--muted)}

.ftr-bottom{
  max-width:var(--maxw);margin:0 auto;
  padding:14px var(--gutter) 30px;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  border-top:1px solid var(--line);
}
.ftr-legal{
  margin:0;font-size:12.5px;letter-spacing:.02em;color:var(--muted);
  font-variant-numeric:tabular-nums;
}

/* ---------- 11 responsive ---------- */
@media (max-width:1180px){
  .brand-tag{display:none}
  .ftr-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:30px}
}
@media (min-width:901px){
  .site-header.is-compact .hdr-inner{min-height:64px}
}
@media (max-width:900px){
  :root{--hdr-h:66px;--gutter:18px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;left:0;right:0;top:var(--hdr-h);
    max-height:calc(100vh - var(--hdr-h));overflow-y:auto;
    padding:12px var(--gutter) 24px;
    background-image:linear-gradient(180deg,#0B2A1F 0%,#071C14 100%);
    border-bottom:1px solid var(--line);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms linear;
  }
  .site-nav[data-open="true"]{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{justify-content:space-between;padding:15px 2px;font-size:17px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--mint)}
  .nav-extra{display:grid;gap:0;margin-top:18px}
  .grid--split,.grid--3{grid-template-columns:minmax(0,1fr)}
  .ftr-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  body{font-size:16px}
  .hdr-actions .cta-btn{display:none}
  .pulse-chip{padding:6px 10px;font-size:11px;letter-spacing:.05em}
  .nav-toggle{padding:8px 12px}
  .grid--2{grid-template-columns:minmax(0,1fr)}
  .ftr-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .ftr-bottom{flex-direction:column;gap:6px}
  .media-frame--wide{aspect-ratio:16/10}
}

/* ---------- 12 reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .pulse-dot::after{display:none}
  .reveal{opacity:1;transform:none}
  .progress-fill{transition:none}
}