/* ==========================================================================
   幻影体育 / Phantom Sprint — 共享站台样式表 /assets/site.css
   顺序：变量 → 重置 → 排版 → 无障碍 → 布局 → 页头 → 导航 → 按钮
        → 通用组件 → 页脚 → 响应式 → 动效降级
   ========================================================================== */

:root{
  --ink-0:#07060B;
  --ink-1:#141020;
  --ink-2:#241B3C;
  --violet:#6D3DF5;
  --violet-soft:#9B7BFF;
  --cyan:#37F5E0;
  --orange:#FF7A2F;
  --paper:#E8E4F5;
  --muted:#A9A2BD;
  --line:#3A2F55;
  --shell:1320px;
  --gutter:clamp(18px,4vw,48px);
  --radius:2px;
  --ease:cubic-bezier(.2,.8,.25,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scrollbar-color:var(--violet) var(--ink-1);
}
html.nav-locked{overflow:hidden;}
body{
  margin:0;
  background-color:var(--ink-0);
  background-image:
    radial-gradient(1100px 620px at 78% -12%, rgba(109,61,245,.28), transparent 62%),
    radial-gradient(760px 520px at 2% 6%, rgba(55,245,224,.07), transparent 60%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0;}
blockquote{margin:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
hr{border:0;border-top:1px solid var(--line);margin:0;}
strong,b{font-weight:700;}

/* ---------- 排版 ---------- */
.display{
  font-size:clamp(44px,8vw,120px);
  font-weight:300;
  font-style:italic;
  line-height:.94;
  letter-spacing:-.03em;
  color:var(--paper);
  text-wrap:balance;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--violet-soft);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--cyan);
  flex:none;
}
.lede{
  max-width:60ch;
  font-size:clamp(15px,1.35vw,17px);
  line-height:1.8;
  color:var(--muted);
}
.muted{color:var(--muted);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.metric{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(28px,4vw,56px);
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan);border-color:rgba(55,245,224,.45);}
.tag--orange{color:var(--orange);border-color:rgba(255,122,47,.45);}

/* ---------- 无障碍 ---------- */
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:1px;
}
::selection{background:rgba(109,61,245,.55);color:#fff;}
.skip-link{
  position:absolute;
  top:10px;
  left:12px;
  z-index:300;
  transform:translateY(-180%);
  padding:10px 18px;
  background:var(--cyan);
  color:var(--ink-0);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  border-radius:var(--radius);
  transition:transform .22s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);}
#main-content{scroll-margin-top:130px;}
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(56px,8vw,112px);}
.grid-bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(12px,1.6vw,20px);
}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,6,11,.95);
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 44px -30px rgba(109,61,245,.9);
}
@supports ((backdrop-filter:blur(12px)) or (-webkit-backdrop-filter:blur(12px))){
  @media (min-width:981px){
    .site-header{
      background:rgba(7,6,11,.84);
      -webkit-backdrop-filter:blur(14px);
      backdrop-filter:blur(14px);
    }
  }
}
.header-inner{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.header-top{
  overflow:hidden;
  max-height:72px;
  background-image:linear-gradient(90deg,rgba(109,61,245,.16),rgba(109,61,245,0) 58%);
  border-bottom:1px solid rgba(58,47,85,.62);
  transition:max-height .38s var(--ease),opacity .3s ease,border-color .3s ease;
}
.site-header[data-stuck] .header-top{
  max-height:0;
  opacity:0;
  border-bottom-color:transparent;
}
.header-top__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:38px;
  padding-block:6px;
}
.header-top__note{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.header-top__pulse{
  width:6px;height:6px;flex:none;
  border-radius:50%;
  background:var(--cyan);
  animation:pulse-ring 2.6s ease-out infinite;
}
@keyframes pulse-ring{
  0%{box-shadow:0 0 0 0 rgba(55,245,224,.5);}
  70%{box-shadow:0 0 0 7px rgba(55,245,224,0);}
  100%{box-shadow:0 0 0 0 rgba(55,245,224,0);}
}
.header-top__links{
  display:flex;
  align-items:center;
  gap:14px;
  flex:none;
}
.top-link{
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--muted);
  padding-block:2px;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.top-link:hover{color:var(--paper);border-bottom-color:var(--cyan);}
.top-link--accent{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  color:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(155,123,255,.12);
  box-shadow:2px 2px 0 rgba(109,61,245,.55);
  border-bottom-color:var(--line);
}
.top-link--accent::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--orange);
  margin-right:8px;
  flex:none;
}
.top-link--accent:hover{
  color:#fff;
  background:rgba(155,123,255,.22);
  border-bottom-color:var(--line);
  transform:translate(-1px,-1px);
  box-shadow:3px 3px 0 rgba(109,61,245,.8);
}
.header-top__mail{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.02em;
  color:var(--muted);
  white-space:nowrap;
}
.header-main__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
  padding-block:12px;
}
.header-progress{
  height:2px;
  background:rgba(58,47,85,.55);
  overflow:hidden;
}
.header-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 62%,var(--orange));
}

/* ---------- 品牌标记 ---------- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
}
.brand__mark{
  position:relative;
  width:36px;height:36px;
  flex:none;
  background:linear-gradient(135deg,rgba(109,61,245,.95),rgba(7,6,11,.92));
  clip-path:polygon(0 18%,72% 0,100% 82%,28% 100%);
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(90deg,transparent 0 4px,rgba(55,245,224,.4) 4px 5px);
}
.brand__text{display:flex;flex-direction:column;gap:1px;}
.brand__name{
  font-size:17px;
  font-weight:700;
  letter-spacing:.1em;
  line-height:1.2;
  color:var(--paper);
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.3em;
  line-height:1.4;
  color:var(--muted);
}
.brand:hover .brand__name{color:#fff;}
.brand--footer .brand__mark{width:30px;height:30px;}
.brand--footer .brand__name{font-size:15px;}

/* ---------- 主导航 ---------- */
.site-nav{
  display:flex;
  align-items:center;
  gap:26px;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 10px 10px;
  font-size:14px;
  letter-spacing:.03em;
  color:var(--muted);
  border-radius:var(--radius);
  transition:color .2s ease,background-color .2s ease;
}
.site-nav__link:hover{color:var(--paper);background:rgba(109,61,245,.14);}
.site-nav__idx{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.06em;
  color:var(--violet-soft);
  opacity:.7;
  transition:color .2s ease,opacity .2s ease;
}
.site-nav__link:hover .site-nav__idx{opacity:1;}
.site-nav__link[aria-current="page"]{color:var(--paper);}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--cyan);opacity:1;}
.site-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:3px;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.site-nav__cta{flex:none;}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 13px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(36,27,60,.6);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--paper);
}
.nav-toggle:hover{border-color:var(--violet-soft);}
.nav-toggle__bars{position:relative;width:16px;height:10px;flex:none;}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:1.5px;
  background:currentColor;
  transition:transform .28s var(--ease),top .28s var(--ease),background-color .28s ease;
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{top:100%;transform:translateY(-1.5px);}
.site-header[data-open] .nav-toggle__bars::before{top:50%;transform:translateY(-50%) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars::after{top:50%;transform:translateY(-50%) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.2;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn--primary{
  background:var(--violet);
  color:#fff;
  box-shadow:3px 3px 0 rgba(55,245,224,.38);
}
.btn--primary:hover{background:#7b4dff;box-shadow:4px 4px 0 rgba(55,245,224,.6);}
.btn--ghost{
  background:rgba(36,27,60,.55);
  border-color:var(--line);
  color:var(--paper);
}
.btn--ghost:hover{border-color:var(--violet-soft);background:rgba(109,61,245,.22);}
.btn--small{padding:9px 15px;font-size:12.5px;letter-spacing:.14em;}

/* ---------- 通用组件 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.panel--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);
}
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:var(--ratio,16/9);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(140deg,var(--ink-2),var(--ink-1));
}
.media-frame img,
.media-frame video,
.media-frame picture{width:100%;height:100%;object-fit:cover;display:block;}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(55,245,224,.08) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(0deg,rgba(155,123,255,.08) 0 1px,transparent 1px 44px);
  mix-blend-mode:screen;
  opacity:.85;
}
.media-frame--wide{--ratio:21/9;}
.media-frame--tall{--ratio:3/4;}
.media-frame--square{--ratio:1/1;}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:18px 0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
}
.breadcrumbs a{color:var(--muted);transition:color .2s ease;}
.breadcrumbs a:hover{color:var(--cyan);}
.breadcrumbs__sep{color:var(--line);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--ink-1);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:6px;
  background:repeating-linear-gradient(90deg,var(--violet) 0 2px,transparent 2px 26px);
  opacity:.5;
  pointer-events:none;
}
.footer-inner{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--gutter) 26px;
}
.footer-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px 32px;
  padding-bottom:28px;
  border-bottom:1px solid rgba(58,47,85,.72);
}
.footer-summary{
  max-width:36ch;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(22px,4vw,52px);
  padding:34px 0 30px;
}
.footer-col__title{
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--violet-soft);
  margin-bottom:16px;
}
.footer-links li + li{margin-top:10px;}
.footer-link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-link::before{
  content:"";
  width:10px;height:1px;
  flex:none;
  background:var(--line);
  transition:width .22s var(--ease),background-color .22s ease;
}
.footer-link:hover{color:var(--paper);}
.footer-link:hover::before{width:20px;background:var(--cyan);}
.footer-contact__row{
  display:flex;
  flex-direction:column;
  gap:3px;
  padding:9px 0;
  border-bottom:1px dashed rgba(58,47,85,.8);
}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  color:var(--muted);
}
.footer-contact__value{
  font-size:13.5px;
  line-height:1.7;
  color:var(--paper);
}
.copy-btn{
  display:inline-flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  text-align:left;
  font-size:13.5px;
  line-height:1.6;
  color:var(--paper);
  transition:color .2s ease;
}
.copy-btn:hover{color:var(--cyan);}
.copy-btn__text{word-break:break-all;}
.copy-btn__badge{
  flex:none;
  padding:2px 8px;
  border:1px solid var(--line);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--muted);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.copy-btn[data-copied] .copy-btn__badge{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--ink-0);
}
.footer-contact__note{
  margin-top:14px;
  font-size:12px;
  line-height:1.75;
  color:var(--muted);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  padding-top:22px;
  border-top:1px solid rgba(58,47,85,.72);
}
.footer-legal{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--muted);
}
.footer-note{
  flex:1 1 320px;
  font-size:12px;
  line-height:1.7;
  color:#8B85A3;
}
.footer-legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  font-size:12px;
}
.footer-legal-links a{
  color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-legal-links a:hover{color:var(--paper);border-bottom-color:var(--cyan);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .site-nav{gap:14px;}
  .site-nav__link{padding:8px 7px 10px;font-size:13px;}
  .site-nav__link[aria-current="page"]::after{left:7px;right:7px;}
}
@media (max-width:980px){
  .header-top__mail{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-main__inner{min-height:62px;}
  .site-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    z-index:120;
    width:min(86vw,360px);
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:84px 22px calc(28px + env(safe-area-inset-bottom));
    background:linear-gradient(180deg,#191231 0%,#07060B 80%);
    border-left:1px solid var(--line);
    box-shadow:-30px 0 70px rgba(0,0,0,.68);
    transform:translateX(103%);
    visibility:hidden;
    overflow-y:auto;
    overscroll-behavior:contain;
    transition:transform .4s var(--ease),visibility .4s var(--ease);
  }
  .site-header[data-open] .site-nav{
    transform:translateX(0);
    visibility:visible;
  }
  .site-header[data-open] .nav-toggle{
    position:fixed;
    top:15px;right:18px;
    z-index:130;
    background:#191231;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    width:100%;
    gap:0;
  }
  .site-nav__item{border-bottom:1px solid rgba(58,47,85,.6);}
  .site-nav__link{
    width:100%;
    padding:15px 2px;
    font-size:16px;
    justify-content:flex-start;
  }
  .site-nav__link[aria-current="page"]::after{
    left:2px;right:auto;bottom:8px;
    width:28px;
    height:2px;
  }
  .site-nav__cta{
    width:100%;
    margin-top:26px;
    padding:13px 18px;
    font-size:13px;
  }
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-note{order:3;flex-basis:100%;}
}
@media (max-width:760px){
  body{background-attachment:scroll;}
  .header-top__note{display:none;}
  .header-top__inner{justify-content:flex-start;gap:10px;}
  .header-top__links{width:100%;justify-content:space-between;}
  #main-content{scroll-margin-top:96px;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-head{flex-direction:column;gap:16px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-legal-links{gap:14px;}
  .nav-toggle__label{display:none;}
  .nav-toggle{padding:9px 11px;}
}
@media (max-width:380px){
  .brand__sub{display:none;}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{
    opacity:1 !important;
    transform:none !important;
    transition:none !important;
  }
  .header-top__pulse{animation:none !important;box-shadow:0 0 0 3px rgba(55,245,224,.18);}
  .btn:hover{transform:none;}
}