/* ============================================================
   欧皇体育 · 共享样式 /assets/site.css
   01 reset  02 tokens  03 base  04 utilities
   05 header 06 footer 07 responsive 08 motion
   ============================================================ */

/* ---------- 01 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--masthead-h) + 20px)}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- 02 tokens ---------- */
:root{
  --ink:#050B09;
  --field:#081713;
  --panel:#102A23;
  --line:#1D4A3C;
  --gold:#D9A93F;
  --gold-soft:#F2D28A;
  --cyan:#2FE3C6;
  --teal:#0F8F80;
  --orange:#F07A3C;
  --paper:#F5F7F3;
  --mist:#B9C7BF;
  --mist-dim:#7E948B;

  --rail-w:132px;
  --masthead-h:92px;
  --quickbar-h:62px;
  --shell:1280px;
  --pad:24px;

  --font-title:"Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --font-serif:"Noto Serif SC","Songti SC",serif;

  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
}

/* ---------- 03 base ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--paper);
  background:var(--field);
  min-height:100vh;
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:800;line-height:1.14;letter-spacing:.02em;color:var(--paper)}
h1{font-size:clamp(34px,5vw,62px)}
h2{font-size:clamp(26px,3.4vw,38px)}
h3{font-size:clamp(19px,2vw,24px)}
h4{font-size:17px;letter-spacing:.06em}
p{max-width:68ch}
strong{color:var(--gold-soft);font-weight:700}

/* ---------- 04 utilities ---------- */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}
.section{padding-block:clamp(36px,5.5vw,76px)}
.section + .section{border-top:1px solid var(--line)}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--gold)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;font-size:11.5px;letter-spacing:.1em;
  color:var(--gold-soft);background:rgba(217,169,63,.12);
  border:1px solid rgba(217,169,63,.34);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%);
}

.panel{
  position:relative;background:var(--panel);border:1px solid var(--line);
  padding:clamp(18px,3vw,28px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.panel--accent{border-top:2px solid var(--gold)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-family:var(--font-title);font-size:16px;font-weight:700;
  letter-spacing:.08em;background:var(--panel);color:var(--paper);
  border:1px solid transparent;cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--gold{background:var(--gold);color:var(--ink)}
.btn--gold:hover{background:var(--gold-soft)}
.btn--outline{background:transparent;border-color:rgba(217,169,63,.55);color:var(--gold-soft)}
.btn--outline:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--quiet{background:rgba(47,227,198,.1);border-color:rgba(47,227,198,.3);color:var(--cyan)}
.btn--quiet:hover{background:rgba(47,227,198,.18)}

.breadcrumbs{padding-block:13px;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--mist-dim)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"›";margin-right:8px;color:var(--line);font-family:var(--font-mono)}
.breadcrumbs a{color:var(--mist)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--gold-soft)}

.grid{display:grid;gap:clamp(16px,2.4vw,26px)}
@media (min-width:900px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--rail{grid-template-columns:minmax(180px,240px) minmax(0,1fr)}
}

.img-frame{
  position:relative;overflow:hidden;aspect-ratio:16/10;
  background:
    repeating-linear-gradient(135deg,rgba(47,227,198,.06) 0 2px,transparent 2px 12px),
    var(--panel);
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);
}
.img-frame > img{width:100%;height:100%;object-fit:cover}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--square{aspect-ratio:1/1}
.img-frame--portrait{aspect-ratio:4/5}
.img-frame__caption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;
  font-size:12px;color:var(--mist);
  background:linear-gradient(180deg,rgba(5,11,9,0),rgba(5,11,9,.86));
}

.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-visible{opacity:1;transform:none;transition:opacity 320ms var(--ease),transform 320ms var(--ease)}

/* ---------- 05 header ---------- */
.site-header{position:relative;z-index:60}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 18px;background:var(--gold);color:var(--ink);
  font-weight:700;font-size:14px;letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none}

.masthead{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,#0B211B 0%,#081713 64%,#071512 100%);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.masthead::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--gold) 0 22%,var(--line) 22% 100%);
}
.site-header[data-scrolled="true"] .masthead{box-shadow:0 14px 30px rgba(5,11,9,.62)}

.masthead__grid{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;
  height:var(--masthead-h);
  max-width:calc(var(--shell) + var(--pad) * 2);
  margin-inline:auto;padding-inline:var(--pad);
}

.masthead__kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--mist-dim);
  white-space:nowrap;
}
.masthead__kicker::before{
  content:"";width:7px;height:7px;background:var(--orange);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}

.brand{
  display:grid;
  grid-template-columns:auto auto;
  grid-template-areas:"mark name" "tag tag";
  align-items:center;column-gap:12px;row-gap:3px;
  justify-self:center;
}
.brand__mark{
  grid-area:mark;width:34px;height:34px;flex:none;
  display:flex;flex-direction:column;justify-content:center;gap:3px;
  padding-left:8px;background:var(--panel);border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.brand__mark i{display:block;height:3px;background:var(--gold)}
.brand__mark i:nth-child(1){width:15px}
.brand__mark i:nth-child(2){width:10px}
.brand__mark i:nth-child(3){width:18px;background:var(--cyan)}
.brand__name{
  grid-area:name;font-family:var(--font-title);font-weight:800;
  font-size:30px;line-height:1.05;letter-spacing:.14em;color:var(--paper);
  transition:color var(--dur) var(--ease);
}
.brand__tagline{
  grid-area:tag;font-family:var(--font-mono);
  font-size:10.5px;line-height:1.4;letter-spacing:.4em;
  color:var(--mist-dim);text-align:center;padding-top:2px;
}
.brand:hover .brand__name{color:var(--gold-soft)}

.masthead__actions{display:flex;align-items:center;justify-content:flex-end;gap:18px}

.quick-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
.quick-links li + li::before{content:"";display:inline-block;width:4px;height:4px;margin-right:16px;background:var(--line);vertical-align:middle}
.quick-links li{display:inline-flex;align-items:center}
.quick-links a{
  font-size:12.5px;letter-spacing:.06em;color:var(--mist);
  padding-bottom:2px;border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.quick-links a:hover{color:var(--gold-soft);border-bottom-color:var(--gold)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;background:var(--panel);color:var(--paper);
  border:1px solid var(--line);cursor:pointer;font-size:12px;letter-spacing:.16em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle__bars{display:grid;gap:3px}
.nav-toggle__bars i{display:block;width:16px;height:2px;background:var(--cyan);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease),background var(--dur) var(--ease)}
.nav-toggle__label{font-family:var(--font-mono);font-size:11px}
.nav-toggle[aria-expanded="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i{background:var(--ink)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.scroll-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--gold))}

/* 品牌轨道 / 移动抽屉 */
.rail{
  position:fixed;top:var(--masthead-h);right:0;bottom:0;left:auto;
  width:min(320px,86vw);z-index:55;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,#0A1E19 0%,#050B09 78%);
  border-left:1px solid var(--line);
  box-shadow:-26px 0 60px rgba(5,11,9,.6);
  transform:translateX(102%);visibility:hidden;
  transition:transform var(--dur) var(--ease),visibility var(--dur) linear;
}
.rail[data-open="true"]{transform:none;visibility:visible}

.rail__head{display:flex;align-items:center;gap:10px;padding:16px 16px 14px;border-bottom:1px solid var(--line)}
.rail__ticks{display:flex;align-items:flex-end;gap:3px;height:12px}
.rail__ticks i{display:block;width:3px;background:var(--gold)}
.rail__ticks i:nth-child(1){height:6px}
.rail__ticks i:nth-child(2){height:12px;background:var(--cyan)}
.rail__ticks i:nth-child(3){height:9px}
.rail__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.3em;color:var(--mist-dim)}

.rail__list{counter-reset:railnav;flex:1;overflow-y:auto;padding-block:10px}
.rail__list li{counter-increment:railnav}
.rail__link{
  display:grid;grid-template-columns:26px 1fr;align-items:center;gap:10px;
  padding:12px 14px 12px 11px;margin:2px 10px 2px 0;
  font-size:14.5px;letter-spacing:.08em;color:var(--paper);
  border-left:3px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rail__link::before{
  content:counter(railnav,decimal-leading-zero);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:0;color:var(--mist-dim);
  transition:color var(--dur) var(--ease);
}
.rail__link:hover{background:rgba(47,227,198,.09);color:var(--cyan);border-left-color:var(--teal);transform:translateX(2px)}
.rail__link:hover::before{color:var(--cyan)}
.rail__link[aria-current="page"]{background:rgba(217,169,63,.1);color:var(--gold-soft);border-left-color:var(--gold)}
.rail__link[aria-current="page"]::before{color:var(--cyan)}

.rail__foot{padding:14px 16px 18px;border-top:1px solid var(--line)}
.rail__note{font-family:var(--font-mono);font-size:10px;letter-spacing:.24em;color:var(--mist-dim);margin-bottom:4px}
.rail__phone{font-family:var(--font-mono);font-size:14px;letter-spacing:.04em;color:var(--gold-soft)}

.rail__scrim{display:none}

/* 移动底部快捷条 */
.quickbar{
  position:fixed;left:0;right:0;bottom:0;z-index:58;
  display:none;grid-template-columns:repeat(4,1fr);
  background:#071512;border-top:1px solid var(--line);
  box-shadow:0 -14px 30px rgba(5,11,9,.55);
}
.quickbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:var(--quickbar-h);padding:8px 3px;
  font-size:11px;line-height:1.25;letter-spacing:.02em;color:var(--mist);
  text-align:center;border-left:1px solid var(--line);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.quickbar a:first-child{border-left:0}
.quickbar a::before{content:"";display:block;width:16px;height:2px;background:var(--line);transition:background var(--dur) var(--ease)}
.quickbar a:hover,.quickbar a:focus-visible{color:var(--gold-soft);background:rgba(217,169,63,.08)}
.quickbar a:hover::before{background:var(--gold)}

/* ---------- 06 footer ---------- */
.site-footer{
  position:relative;margin-top:0;
  background:var(--ink);color:var(--mist);
  border-top:2px solid var(--gold);
}
.site-footer::before{
  content:"";position:absolute;top:-2px;left:0;width:min(220px,42vw);height:2px;background:var(--cyan);
}
.footer__grid{
  max-width:var(--shell);margin-inline:auto;
  padding:clamp(34px,5vw,58px) var(--pad) clamp(26px,4vw,40px);
  display:grid;grid-template-columns:1fr;gap:32px;
}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.footer__logo{
  font-family:var(--font-title);font-weight:800;font-size:26px;letter-spacing:.16em;
  color:var(--paper);transition:color var(--dur) var(--ease);
}
.footer__logo:hover{color:var(--gold-soft)}
.footer__brandline{font-size:13px;line-height:1.75;color:var(--mist-dim);max-width:34ch}
.footer__cta{margin-top:4px;font-size:14px;padding:10px 18px}

.footer__col{display:flex;flex-direction:column;gap:12px}
.footer__col-title{
  font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.28em;
  color:var(--gold);padding-left:9px;border-left:2px solid var(--cyan);line-height:1.2;
}
.footer__links{display:grid;gap:8px}
.footer__links a{
  font-size:13.5px;color:var(--mist);
  transition:color var(--dur) var(--ease);
}
.footer__links a:hover{color:var(--cyan)}
.footer__links a[aria-current="page"]{color:var(--gold-soft)}

.footer__contact-line{
  font-family:var(--font-mono);font-size:12.5px;line-height:1.8;
  color:var(--paper);letter-spacing:.01em;word-break:break-word;
}
.footer__contact-line + .footer__contact-line{margin-top:2px}
.footer__note{font-size:12px;line-height:1.7;color:var(--mist-dim);margin-top:10px;max-width:36ch}

.footer__legal{
  border-top:1px solid var(--line);
  padding:16px var(--pad) 20px;
}
.footer__legal-inner{
  max-width:var(--shell);margin-inline:auto;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
}
.footer__meta{font-size:12px;line-height:1.7;color:var(--mist-dim);max-width:none}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:18px}
.footer__legal-links a{
  font-size:12px;color:var(--gold-soft);letter-spacing:.04em;
  border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer__legal-links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- 07 responsive ---------- */
@media (max-width:1179px){
  body{padding-bottom:calc(var(--quickbar-h) + 2px)}
  body.is-nav-open{overflow:hidden}
  .quickbar{display:grid}
  .nav-toggle{display:inline-flex}
  .quick-links{display:none}
  .masthead__kicker{display:none}
  .brand{grid-column:2}
  .masthead__actions{grid-column:3;gap:10px}
  .rail__scrim{
    display:block;position:fixed;top:var(--masthead-h);right:0;bottom:0;left:0;z-index:52;
    background:rgba(5,11,9,.74);
    opacity:0;visibility:hidden;
    transition:opacity var(--dur) var(--ease),visibility var(--dur) linear;
  }
  .rail__scrim[data-open="true"]{opacity:1;visibility:visible}
}

@media (min-width:1180px){
  body{padding-left:var(--rail-w)}
  .masthead{margin-left:calc(var(--rail-w) * -1);padding-left:var(--rail-w)}
  .rail{
    left:0;right:auto;width:var(--rail-w);
    border-left:0;border-right:1px solid var(--line);
    transform:none;visibility:visible;box-shadow:none;transition:none;
  }
  .rail__scrim{display:none}
  .quickbar{display:none}
  .nav-toggle{display:none}
}

@media (min-width:640px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__brand{grid-column:1 / -1}
}
@media (min-width:1080px){
  .footer__grid{grid-template-columns:1.5fr .85fr 1fr 1.15fr;gap:28px 36px}
  .footer__brand{grid-column:auto}
}

@media (max-width:760px){
  :root{--masthead-h:74px;--pad:16px;--quickbar-h:60px}
  .brand__name{font-size:23px;letter-spacing:.1em}
  .brand__tagline{font-size:9.5px;letter-spacing:.24em}
  .brand__mark{width:28px;height:28px;gap:2px;padding-left:6px}
  .brand__mark i:nth-child(1){width:12px}
  .brand__mark i:nth-child(2){width:8px}
  .brand__mark i:nth-child(3){width:14px}
  .nav-toggle{padding:8px 10px}
  .nav-toggle__label{display:none}
  .footer__legal-links{gap:14px}
}

/* ---------- 08 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;
  }
  .rail{transition:none}
  .reveal{opacity:1;transform:none}
  .btn:hover,.rail__link:hover{transform:none}
}