/* ============================================================
   /assets/site.css — 完美体育主站共享样式
   1. tokens  2. reset  3. 外壳  4. 通用组件  5. 响应式
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --ink-night:#0A1733;
  --ink-rail:#12234A;
  --lake:#31B7B0;
  --lake-soft:#A8E3DD;
  --signal:#FF7B3F;
  --paper:#F2E9DB;
  --numeric:#F7FBFD;
  --graphite:#1B2230;
  --haze:#7383A3;

  --text-strong:#F7FBFD;
  --text-body:#CBD8E8;
  --line:rgba(232,240,247,.12);
  --line-strong:rgba(168,227,221,.42);

  --font-sans:"Helvetica Neue","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:26px;
  --radius-pill:999px;

  --shell-max:1280px;
  --gutter:clamp(16px,4vw,40px);
  --ease:150ms 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-sans);
  font-size:16px;
  line-height:1.65;
  color:var(--text-body);
  background-color:var(--ink-night);
  background-image:
    radial-gradient(900px 520px at 88% -8%,rgba(49,183,176,.16),transparent 62%),
    radial-gradient(760px 460px at -6% 4%,rgba(255,123,63,.10),transparent 58%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,picture,svg,video{display:block;max-width:100%;}
a{color:inherit;}
button{font:inherit;color:inherit;background:none;border:0;}
::selection{background:var(--lake);color:var(--ink-night);}
:focus-visible{outline:2px solid var(--lake);outline-offset:3px;}

/* ---------- 3a. skip link ---------- */
.skip-link{
  position:fixed;
  top:-90px;
  left:16px;
  z-index:400;
  display:inline-flex;
  align-items:center;
  padding:12px 20px;
  border-radius:var(--radius-pill);
  background:var(--signal);
  color:var(--ink-night);
  font-size:14px;
  font-weight:800;
  text-decoration:none;
  transition:top var(--ease);
}
.skip-link:focus{top:16px;}

/* ---------- 3b. header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  padding:14px var(--gutter) 0;
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 -20px 0;
  z-index:-1;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(10,23,51,.92) 0%,rgba(10,23,51,.55) 58%,rgba(10,23,51,0) 100%);
}
.header-shell{
  position:relative;
  max-width:var(--shell-max);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.brand-capsule{
  display:inline-flex;
  align-items:center;
  gap:11px;
  padding:9px 18px 9px 11px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(18,35,74,.92);
  text-decoration:none;
  color:var(--text-strong);
  flex:0 0 auto;
  transition:border-color var(--ease),background-color var(--ease),box-shadow var(--ease);
}
.brand-capsule:hover{border-color:var(--line-strong);background:var(--ink-rail);}
.brand-mark{
  width:28px;
  height:28px;
  flex:0 0 auto;
  border-radius:9px;
  background:linear-gradient(135deg,var(--lake) 0%,#1E7E8C 58%,var(--signal) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:8px auto auto 8px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--ink-night);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.02em;}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--haze);
  text-transform:uppercase;
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:10px 16px 10px 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(18,35,74,.92);
  color:var(--text-strong);
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:border-color var(--ease),background-color var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);}
.nav-toggle-bar{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--lake);
  transition:background-color var(--ease);
}
.nav-toggle-bar::before,
.nav-toggle-bar::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  border-radius:2px;
  background:inherit;
  transition:transform var(--ease),top var(--ease);
}
.nav-toggle-bar::before{top:-5px;}
.nav-toggle-bar::after{top:5px;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar{background:var(--signal);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after{top:0;transform:rotate(-45deg);}
.nav-toggle-label{line-height:1;}

.pill-nav{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:6px 8px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(18,35,74,.86);
  backdrop-filter:blur(10px);
}
.pill-nav-list{display:flex;align-items:center;gap:2px;}
.pill-nav-link{
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  color:var(--text-body);
  text-decoration:none;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease);
}
.pill-nav-link:hover{background:rgba(49,183,176,.16);color:var(--text-strong);}
.pill-nav-link[aria-current="page"]{
  background:var(--lake);
  color:var(--ink-night);
  font-weight:800;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 16px;
  border-radius:var(--radius-pill);
  background:var(--signal);
  color:var(--ink-night);
  font-size:14px;
  font-weight:800;
  line-height:1.2;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color var(--ease);
}
.nav-cta:hover{background:#FF9160;}
.scroll-meter{
  max-width:var(--shell-max);
  margin:12px auto 0;
  height:2px;
  border-radius:2px;
  background:rgba(232,240,247,.1);
  overflow:hidden;
}
.scroll-meter-fill{
  display:block;
  width:0;
  height:100%;
  border-radius:2px;
  background:linear-gradient(90deg,var(--lake) 0%,var(--signal) 100%);
}
.site-header[data-stuck="true"] .brand-capsule,
.site-header[data-stuck="true"] .nav-toggle,
.site-header[data-stuck="true"] .pill-nav{
  box-shadow:0 12px 30px rgba(4,9,22,.45);
}

/* ---------- 3c. footer ---------- */
.site-footer{
  margin-top:clamp(56px,9vw,120px);
  padding:clamp(44px,6vw,84px) var(--gutter) 0;
  color:var(--text-body);
  background:linear-gradient(180deg,#0A1733 0%,#071026 100%);
  border-top:1px solid var(--line);
}
.footer-shell{
  max-width:var(--shell-max);
  margin:0 auto;
  display:grid;
  grid-template-columns:minmax(240px,1fr) minmax(0,2fr);
  gap:clamp(28px,5vw,72px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px;}
.footer-brand-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:24px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--text-strong);
  text-decoration:none;
}
.footer-brand-link::before{
  content:"";
  width:10px;
  height:22px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--lake) 0%,var(--signal) 100%);
}
.footer-line{font-size:15px;line-height:1.7;color:var(--text-body);max-width:26ch;}
.footer-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:4px;
  padding:11px 20px;
  border-radius:var(--radius-pill);
  background:var(--signal);
  color:var(--ink-night);
  font-size:14px;
  font-weight:800;
  text-decoration:none;
  transition:background-color var(--ease),transform var(--ease);
}
.footer-cta:hover{background:#FF9160;}
.footer-cta:active{transform:translateY(1px);}
.footer-groups{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:clamp(20px,3vw,36px);
}
.footer-group{min-width:0;}
.footer-group-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--lake-soft);
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  color:var(--text-body);
  text-decoration:none;
  transition:color var(--ease);
}
.footer-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:0;
  height:1px;
  background:var(--lake);
  transition:width var(--ease);
}
.footer-link:hover{color:var(--text-strong);}
.footer-link:hover::after{width:100%;}
.footer-meta{
  max-width:var(--shell-max);
  margin:clamp(32px,4vw,56px) auto 0;
  padding-top:clamp(22px,3vw,32px);
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:clamp(20px,3vw,40px);
}
.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:14px 24px;
}
.footer-contact-item{display:flex;flex-direction:column;gap:2px;min-width:0;}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--haze);
}
.footer-contact-value{font-size:15px;color:var(--text-strong);word-break:break-word;}
.footer-note{font-size:13px;line-height:1.75;color:var(--haze);}
.footer-base{
  max-width:var(--shell-max);
  margin:clamp(24px,3vw,40px) auto 0;
  padding:18px 0 22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
}
.footer-copy{font-family:var(--font-mono);font-size:13px;letter-spacing:.01em;color:var(--haze);}
.footer-base-note{font-size:13px;color:var(--haze);}

/* ---------- 4a. layout ---------- */
.container{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(36px,6vw,76px);}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px 24px;
  margin-bottom:clamp(18px,3vw,32px);
}
.divider{border:0;height:1px;background:var(--line);margin-block:clamp(24px,4vw,44px);}
.card-grid{
  display:grid;
  gap:clamp(14px,2vw,24px);
  grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));
}

/* ---------- 4b. typography ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lake-soft);
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--lake);}
.display-title{
  font-family:var(--font-sans);
  font-size:clamp(30px,5vw,60px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.06;
  color:var(--text-strong);
}
.display-title--sm{font-size:clamp(24px,3vw,36px);line-height:1.14;}
.lede{
  max-width:60ch;
  font-size:clamp(15px,1.3vw,18px);
  line-height:1.7;
  color:var(--text-body);
}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- 4c. buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  text-decoration:none;
  transition:background-color var(--ease),border-color var(--ease),color var(--ease),transform var(--ease);
}
.btn--primary{background:var(--signal);color:var(--ink-night);}
.btn--primary:hover{background:#FF9160;}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--lake-soft);}
.btn--ghost:hover{border-color:var(--lake);color:var(--text-strong);background:rgba(49,183,176,.12);}
.btn:active{transform:translateY(1px);}

/* ---------- 4d. breadcrumbs ---------- */
.breadcrumbs{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--haze);
}
.breadcrumbs-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumbs-list li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumbs-list li + li::before{content:"/";color:rgba(115,131,163,.7);}
.breadcrumbs a{color:var(--lake-soft);text-decoration:none;}
.breadcrumbs a:hover{text-decoration:underline;}
.breadcrumbs [aria-current="page"]{color:var(--text-body);}

/* ---------- 4e. tags & status ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(49,183,176,.34);
  background:rgba(49,183,176,.14);
  color:var(--lake-soft);
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(49,183,176,.32);
  background:rgba(49,183,176,.14);
  color:var(--lake-soft);
  font-size:12px;
  font-weight:700;
}
.status-pill::before{
  content:"";
  width:7px;
  height:7px;
  flex:0 0 auto;
  border-radius:50%;
  background:currentColor;
}
.status-pill--signal{
  border-color:rgba(255,123,63,.42);
  background:rgba(255,123,63,.15);
  color:#FFA374;
}

/* ---------- 4f. surfaces ---------- */
.panel{
  padding:clamp(18px,2.4vw,28px);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:rgba(18,35,74,.72);
}
.paper{
  padding:clamp(20px,3vw,36px);
  border-radius:var(--radius-lg);
  background:var(--paper);
  color:var(--graphite);
}
.paper h2,.paper h3{color:var(--graphite);letter-spacing:-.015em;}
.paper p{color:#2A3444;}
.paper a{color:#0E6E74;text-decoration-color:rgba(14,110,116,.4);}
.paper a:hover{color:#0A575C;}

/* ---------- 4g. stat cards ---------- */
.stat-card{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:16px 18px;
  border:1px solid rgba(10,23,51,.06);
  border-radius:var(--radius-md);
  background:var(--numeric);
  color:var(--ink-night);
  transition:transform var(--ease),box-shadow var(--ease);
}
.stat-card:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(4,9,22,.35);}
.stat-value{
  font-family:var(--font-mono);
  font-size:clamp(26px,3.6vw,44px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--ink-night);
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:12px;letter-spacing:.06em;color:#4C5B79;}

/* ---------- 4h. side rail ---------- */
.rail{
  display:flex;
  flex-direction:column;
  gap:18px;
  position:sticky;
  top:104px;
}
.rail-title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--lake-soft);
}
.rail-list{display:flex;flex-direction:column;gap:2px;}
.rail-item{
  display:block;
  padding:9px 12px;
  border-left:2px solid transparent;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:14px;
  color:var(--text-body);
  text-decoration:none;
  transition:background-color var(--ease),border-color var(--ease),color var(--ease);
}
.rail-item:hover{background:rgba(49,183,176,.12);color:var(--text-strong);}
.rail-item[aria-current="true"],
.rail-item.is-active{
  border-left-color:var(--lake);
  background:rgba(49,183,176,.16);
  color:var(--text-strong);
}

/* ---------- 4i. media frames ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(155deg,#152A56 0%,#0B1834 72%);
  aspect-ratio:16/10;
}
.media-frame img,
.media-frame picture,
.media-frame picture img,
.media-frame svg{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--portrait{aspect-ratio:4/5;}
.media-frame--square{aspect-ratio:1/1;}
.media-caption{margin-top:10px;font-size:13px;line-height:1.6;color:var(--haze);}

/* ---------- 4j. reveal ---------- */
html.js .reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .45s ease,transform .45s ease;
}
html.js .reveal.is-visible{opacity:1;transform:none;}

/* ---------- 5. responsive ---------- */
@media (max-width:1080px){
  .pill-nav-link{padding:9px 11px;font-size:14px;}
  .brand-sub{display:none;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .pill-nav{
    position:absolute;
    left:0;
    right:0;
    top:calc(100% + 10px);
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:10px;
    border-radius:24px;
    background:rgba(12,25,54,.98);
    box-shadow:0 26px 60px rgba(4,9,22,.62);
    display:none;
  }
  .pill-nav[data-open="true"]{display:flex;}
  .pill-nav-list{flex-direction:column;align-items:stretch;gap:2px;}
  .pill-nav-link{padding:13px 16px;border-radius:14px;font-size:15px;}
  .pill-nav-link[aria-current="page"]{border-radius:14px;}
  .nav-cta{margin-top:4px;padding:13px 16px;border-radius:14px;}
  .rail{position:static;top:auto;}
}
@media (max-width:820px){
  .footer-shell{grid-template-columns:1fr;}
  .footer-meta{grid-template-columns:1fr;}
  .footer-line{max-width:44ch;}
}
@media (max-width:640px){
  .display-title{font-size:clamp(28px,8vw,40px);}
  .footer-base{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js .reveal{opacity:1;transform:none;transition:none;}
}