/* ============ 幻影体育安装 · 共享样式 /assets/site.css ============ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{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%}

/* ---------- tokens ---------- */
:root{
  --ink:#070912;
  --nebula:#17102E;
  --violet:#6C3BFF;
  --mist:#A78BFA;
  --cyan:#2DF5E2;
  --orange:#FF6A2A;
  --ice:#F4F6FF;
  --grey:#9AA3BF;
  --panel-blue:#101A33;

  --line:rgba(167,139,250,.22);
  --line-soft:rgba(167,139,250,.12);
  --max:1360px;
  --gutter:clamp(18px,4vw,56px);

  --font-display:"Barlow Condensed","Oswald","Arial Narrow","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","DIN Alternate","SF Mono",ui-monospace,Menlo,Consolas,monospace;
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:clamp(15px,1.02vw,17px);
  line-height:1.75;
  letter-spacing:.005em;
  background:
    repeating-linear-gradient(115deg,rgba(167,139,250,.05) 0 1px,transparent 1px 24px),
    radial-gradient(1100px 680px at 84% -10%,rgba(108,59,255,.24),transparent 62%),
    radial-gradient(820px 560px at 6% 14%,rgba(45,245,226,.09),transparent 66%),
    var(--ink);
  background-repeat:repeat,no-repeat,no-repeat,no-repeat;
}
::selection{background:rgba(45,245,226,.28);color:var(--ice)}
h1,h2,h3,.section-title{font-family:var(--font-display);font-weight:900;line-height:1.06;letter-spacing:-.02em;text-wrap:balance}
h1{font-size:clamp(42px,7vw,96px)}
h2{font-size:clamp(32px,4.6vw,56px)}
h3{font-size:clamp(20px,2.4vw,28px)}
p{max-width:72ch}
strong{font-weight:700;color:var(--ice)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}

/* ---------- layout primitives ---------- */
.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(56px,8vw,120px)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,30px)}
@media (max-width:780px){.grid-12{grid-template-columns:minmax(0,1fr)}}

/* ---------- text / heading components ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.28em;
  text-transform:uppercase;color:var(--mist);
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.section-title{font-size:clamp(30px,4.4vw,52px);color:var(--ice)}
.lede{font-size:clamp(16px,1.6vw,18px);line-height:1.8;color:var(--grey);max-width:66ch}
.index-num{font-family:var(--font-mono);font-size:13px;letter-spacing:.3em;color:var(--cyan)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.divider{height:1px;border:0;margin-block:clamp(32px,5vw,64px);
  background:linear-gradient(90deg,rgba(167,139,250,.55),rgba(45,245,226,.14) 55%,transparent)}

/* ---------- panels & tags ---------- */
.cut-panel{
  position:relative;
  padding:clamp(20px,3vw,34px);
  background:linear-gradient(160deg,rgba(23,16,46,.92),rgba(16,26,51,.86));
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.panel{
  padding:clamp(18px,2.4vw,28px);
  background:rgba(16,26,51,.72);
  border:1px solid var(--line);
  border-left:3px solid var(--violet);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--cyan);background:rgba(45,245,226,.08);
  border:1px solid rgba(45,245,226,.32);
  clip-path:polygon(0 0,100% 0,calc(100% - 8px) 100%,0 100%);
}

/* ---------- stats ---------- */
.stat{display:flex;flex-direction:column;gap:2px}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3vw,38px);line-height:1.1;color:var(--cyan)}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--grey)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;font-size:15px;font-weight:700;letter-spacing:.02em;
  color:var(--ice);
  background:linear-gradient(120deg,var(--violet),#4b25c9);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;
}
.btn:hover{filter:brightness(1.12);transform:translateY(-2px)}
.btn:focus-visible{outline:0;box-shadow:inset 0 0 0 2px var(--cyan)}
.btn--primary{background:linear-gradient(120deg,var(--violet),#4b25c9)}
.btn--orange{background:linear-gradient(120deg,var(--orange),#e04a10);color:#12060a}
.btn--quiet{
  background:transparent;color:var(--ice);
  box-shadow:inset 0 0 0 1px rgba(167,139,250,.42);
}
.btn--quiet:hover{color:var(--cyan);background:rgba(45,245,226,.08);box-shadow:inset 0 0 0 1px rgba(45,245,226,.6)}
.btn--sm{
  padding:9px 18px;font-size:13px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:14px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--grey);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item a:hover,.breadcrumbs__item a:focus-visible{color:var(--cyan)}
.breadcrumbs__sep{color:rgba(167,139,250,.5)}

/* ---------- tabs ---------- */
.tabs__list{display:flex;flex-wrap:wrap;gap:6px;border-bottom:1px solid var(--line);margin-bottom:24px}
.tabs__tab{
  position:relative;padding:12px 18px;
  font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--grey);
  transition:color .16s ease;
}
.tabs__tab:hover{color:var(--ice)}
.tabs__tab[aria-selected="true"]{color:var(--ice)}
.tabs__tab::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);transform-origin:left;transition:transform .16s ease;
}
.tabs__tab[aria-selected="true"]::after{transform:scaleX(1)}
.tabs__tab:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.tabs__panel{padding-top:4px}
.tabs__panel[hidden]{display:none}

/* ---------- media frames ---------- */
.media-frame{
  position:relative;display:block;margin:0;overflow:hidden;
  aspect-ratio:16/10;
  background:
    linear-gradient(150deg,#141a3a 0%,#0b0f22 58%,#120b26 100%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 32px),calc(100% - 32px) 100%,0 100%);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(118deg,rgba(45,245,226,.14) 0 1px,transparent 1px 34px);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame__img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame__caption{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:10px 16px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--ice);
  background:rgba(7,9,18,.75);
  clip-path:polygon(0 0,100% 0,calc(100% - 12px) 100%,0 100%);
}

/* ---------- reveal ---------- */
.reveal{transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1)}
html[data-reveal="on"] .reveal{opacity:0;transform:translate3d(-14px,18px,0)}
html[data-reveal="on"] .reveal[data-revealed="true"]{opacity:1;transform:none}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;left:16px;top:-80px;z-index:200;
  padding:10px 18px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:#04121a;background:var(--cyan);
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(100deg,rgba(7,9,18,.97),rgba(23,16,46,.94) 62%,rgba(7,9,18,.97));
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.site-header::before{
  content:"";position:absolute;left:0;top:0;width:min(42%,420px);height:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  clip-path:polygon(0 0,100% 0,calc(100% - 22px) 100%,0 100%);
}
.site-header__bar{
  display:flex;align-items:center;gap:clamp(14px,2.4vw,34px);
  max-width:var(--max);margin-inline:auto;
  padding:11px var(--gutter);
}

/* brand */
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__sigil{
  flex:0 0 auto;width:30px;height:30px;
  background:linear-gradient(140deg,var(--violet),var(--cyan) 78%);
  clip-path:polygon(22% 0,100% 0,78% 100%,0 100%);
  box-shadow:0 0 22px rgba(108,59,255,.55);
}
.brand__text{display:flex;flex-direction:column;gap:3px}
.brand__name{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(18px,1.5vw,21px);letter-spacing:.02em;line-height:1.1;color:var(--ice);
}
.brand__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.brand__badge{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  color:var(--cyan);padding:2px 7px;
  border:1px solid rgba(45,245,226,.35);background:rgba(45,245,226,.08);
  clip-path:polygon(0 0,100% 0,calc(100% - 6px) 100%,0 100%);
}
.brand__cert{
  display:inline-flex;align-items:center;gap:5px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--mist);
}
.brand__cert::before{content:"";width:5px;height:5px;background:var(--orange);
  clip-path:polygon(0 0,100% 50%,0 100%)}
.brand--footer{align-items:flex-start}
.brand--footer .brand__name{font-size:22px}

/* nav */
.nav{margin-left:auto}
.nav__list{display:flex;align-items:center;gap:clamp(8px,1.6vw,24px);counter-reset:nav}
.nav__item{position:relative}
.nav__link{
  position:relative;display:inline-block;padding:10px 2px;
  font-size:15px;font-weight:500;letter-spacing:.02em;
  color:rgba(244,246,255,.76);
  transition:color .18s ease;
}
.nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav__link:hover,.nav__link:focus-visible{color:var(--ice)}
.nav__link:hover::after,.nav__link:focus-visible::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--ice);font-weight:700}
.nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:linear-gradient(90deg,var(--orange),var(--cyan));
}

/* header actions + toggle */
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;position:relative;
  width:46px;height:44px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  background:rgba(108,59,255,.16);
  border:1px solid rgba(167,139,250,.34);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:background .18s ease;
}
.nav-toggle:hover{background:rgba(108,59,255,.3)}
.nav-toggle__bar{
  display:block;width:20px;height:2px;background:var(--ice);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-toggle__label{
  position:absolute;width:1px;height:1px;overflow:hidden;
  clip-path:inset(50%);white-space:nowrap;
}

/* scroll progress */
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:rgba(167,139,250,.14);
}
.scroll-progress__bar{
  display:block;width:0;height:100%;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 55%,var(--orange));
  transition:width .1s linear;
}

/* floating favorites dock */
.fav-dock{
  position:fixed;right:0;top:52%;z-index:80;
  display:inline-flex;align-items:center;
  padding:16px 10px;
  background:linear-gradient(180deg,var(--violet),#3b1fb0);
  color:var(--ice);
  clip-path:polygon(14px 0,100% 0,100% 100%,14px 100%,0 50%);
  box-shadow:-8px 0 26px rgba(108,59,255,.35);
  transition:background .18s ease,transform .18s ease;
}
.fav-dock__text{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.26em;
  padding-left:6px;
}
.fav-dock:hover,.fav-dock:focus-visible{
  background:linear-gradient(180deg,var(--orange),#c33d0c);
  transform:translateX(-4px);
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(64px,9vw,140px);
  border-top:1px solid var(--line);
  background:
    radial-gradient(120% 140% at 86% 0%,rgba(108,59,255,.3),transparent 60%),
    linear-gradient(180deg,#0A0C18,#070912 72%);
}
.site-footer::before{
  content:"";position:absolute;left:0;top:0;width:min(58%,560px);height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 60%,transparent);
}
.site-footer__glow{
  display:block;position:absolute;right:-8%;bottom:8%;
  width:clamp(240px,42vw,520px);height:clamp(240px,42vw,520px);
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(45,245,226,.16),transparent 62%);
}
.footer__inner{position:relative;z-index:1;padding-block:clamp(44px,6vw,84px) clamp(24px,3vw,36px)}
.footer__grid{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr 1.1fr;
  gap:clamp(28px,4vw,56px);
}
.footer__brand{display:flex;flex-direction:column;gap:16px}
.footer__lede{
  font-size:15px;line-height:1.8;color:var(--grey);max-width:34ch;
}
.footer__chips{display:flex;flex-wrap:wrap;gap:8px}
.footer__chip{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--mist);padding:4px 9px;
  border:1px solid var(--line);background:rgba(167,139,250,.06);
  clip-path:polygon(0 0,100% 0,calc(100% - 7px) 100%,0 100%);
}
.footer__title{
  display:flex;align-items:center;gap:8px;
  margin-bottom:18px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.24em;color:var(--ice);
}
.footer__title::before{
  content:"";width:10px;height:10px;background:var(--orange);
  clip-path:polygon(0 0,100% 0,0 100%);
}
.footer__list{display:grid;gap:10px}
.footer__link{
  display:inline-block;padding-block:2px;
  font-size:15px;color:var(--grey);
  transition:color .18s ease;
}
.footer__link:hover,.footer__link:focus-visible{color:var(--cyan)}
.footer__contact{display:grid;gap:12px}
.footer__label{
  display:block;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.2em;color:var(--mist);
}
.footer__value{
  display:block;font-size:15px;line-height:1.65;color:var(--ice);
  word-break:break-word;
}
.footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;
  margin-top:clamp(32px,4vw,56px);padding-top:20px;
  border-top:1px solid var(--line);
}
.footer__copy,.footer__icp{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--grey);
}
.footer__legal{display:flex;flex-wrap:wrap;gap:18px}
.footer__legal .footer__link{font-size:13px}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav{
    position:absolute;top:100%;left:0;right:0;z-index:95;
    margin-left:0;
    padding:8px clamp(18px,4vw,32px) 28px;
    max-height:calc(100vh - 76px);overflow-y:auto;
    background:linear-gradient(160deg,rgba(23,16,46,.99),rgba(7,9,18,.99));
    border-bottom:1px solid var(--line);
    clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 22px));
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .nav[data-open="true"]{opacity:1;visibility:visible;transform:translateY(0)}
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__item{border-bottom:1px solid var(--line-soft);counter-increment:nav}
  .nav__link{
    display:flex;align-items:center;min-height:52px;padding:0 4px;font-size:16px;
  }
  .nav__link::before{
    content:counter(nav,decimal-leading-zero);
    font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
    color:var(--mist);margin-right:14px;
  }
  .nav__link::after{display:none}
  .nav__link[aria-current="page"]{color:var(--cyan)}
  .nav__link[aria-current="page"]::before{color:var(--orange)}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .fav-dock{display:none}
}
@media (max-width:640px){
  .footer__grid{grid-template-columns:minmax(0,1fr);gap:clamp(24px,6vw,36px)}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .header-actions .btn{display:none}
  .brand__cert{display:none}
}
@media (max-width:420px){
  .brand__badge{font-size:9px;letter-spacing:.1em}
}

/* ---------- 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;
  }
  html[data-reveal="on"] .reveal{opacity:1 !important;transform:none !important}
  .btn:hover{transform:none}
  .fav-dock:hover{transform:none}
}