/* =========================================================
   米兰赛事 · /assets/site.css
   01 tokens · 02 reset · 03 typography · 04 layout
   05 buttons/chips · 06 header · 07 footer
   08 components · 09 motion · 10 responsive
   ========================================================= */

/* ---------- 01 tokens ---------- */
:root{
  --ink:#0A0B0D;
  --panel:#15171C;
  --line:#23262E;
  --red:#E01B2E;
  --red-deep:#8A0F1D;
  --blue:#2F6BFF;
  --green:#2FBF6B;
  --slate:#9AA6BF;
  --mist:#F2F4F8;
  --white:#FFFFFF;
  --amber:#F5A524;

  --shell:1240px;
  --gutter:clamp(18px,4vw,48px);
  --radius:0px;

  --font-display:"Source Han Sans SC","Noto Sans SC","Alibaba PuHuiTi","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 02 reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:92px;
}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;border-spacing:0;}
hr{border:0;border-top:1px solid var(--line);margin:0;}
[hidden]{display:none !important;}

/* ---------- 03 typography ---------- */
body{
  background:var(--ink);
  color:var(--mist);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,.display{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.06;
  letter-spacing:-.02em;
  color:var(--white);
  text-wrap:balance;
}
h1{font-size:clamp(40px,9vw,96px);}
h2{font-size:clamp(26px,4.6vw,44px);}
h3{font-size:clamp(19px,2.4vw,26px);letter-spacing:-.01em;}
h4{font-size:clamp(16px,2vw,19px);letter-spacing:0;}
p{max-width:68ch;}
p + p{margin-top:.9em;}
strong{color:var(--white);font-weight:700;}
.num,.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:-.01em;
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--red);
}
.meta{
  font-size:13px;
  line-height:1.6;
  color:var(--slate);
}
.lead{
  font-size:clamp(16px,1.9vw,19px);
  line-height:1.8;
  color:#C9D2E2;
  max-width:56ch;
}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:3px;
}

/* ---------- 04 layout ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.zone{
  padding-block:clamp(44px,7vw,96px);
  position:relative;
}
.zone--panel{background:var(--panel);}
.zone--mist{background:var(--mist);color:#12151B;}
.zone--mist h1,.zone--mist h2,.zone--mist h3,.zone--mist h4{color:#0A0B0D;}
.zone--mist .lead{color:#4A5468;}
.zone--mist .meta{color:#5A6478;}
.zone--mist .eyebrow{color:var(--red-deep);}
.zone--edge{border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.zone--flush{padding-block:0;}

.section{padding-block:clamp(36px,5.5vw,72px);}
.section:first-child{padding-top:0;}
.section:last-child{padding-bottom:0;}
.section__head{
  display:grid;
  gap:10px;
  max-width:70ch;
  margin-bottom:clamp(22px,3.4vw,40px);
}
.section__title{margin-block:4px;}
.section__lead{color:#B9C3D6;font-size:16px;line-height:1.8;max-width:60ch;}
.zone--mist .section__lead{color:#4A5468;}

.grid{display:grid;gap:clamp(14px,2vw,22px);}
.grid--bento{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--duo{grid-template-columns:1fr;}
.grid--cards{grid-template-columns:1fr;}
.hairline{height:1px;background:var(--line);}

/* breadcrumb */
.breadcrumb{padding-block:16px;}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__link{font-size:13px;color:var(--slate);border-bottom:1px solid transparent;transition:color .15s,border-color .15s;}
.breadcrumb__link:hover{color:var(--white);border-bottom-color:var(--red);}
.breadcrumb__sep{font-size:12px;color:var(--line);}
.breadcrumb__item[aria-current="page"] .breadcrumb__link{color:var(--white);}

/* ---------- 05 buttons & chips ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-display);
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .12s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn--primary{
  background:linear-gradient(140deg,var(--red) 0%,var(--red-deep) 100%);
  color:var(--white);
  box-shadow:0 10px 26px rgba(224,27,46,.28);
}
.btn--primary:hover{background:linear-gradient(140deg,#F0263A 0%,#A0121F 100%);}
.btn--line{
  border-color:var(--line);
  color:var(--mist);
  background:transparent;
}
.btn--line:hover{border-color:var(--red);color:var(--white);background:rgba(224,27,46,.10);}
.btn--ghost{color:var(--slate);}
.btn--ghost:hover{color:var(--white);background:var(--panel);}
.btn--sm{min-height:36px;padding:0 14px;font-size:13px;}
.btn--block{width:100%;}
.zone--mist .btn--line{border-color:#D3D9E4;color:#12151B;}
.zone--mist .btn--line:hover{border-color:var(--red);color:var(--red-deep);}

.chip{
  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:12px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.5;
  color:var(--slate);
  white-space:nowrap;
}
.chip--red{border-color:rgba(224,27,46,.5);color:#FF7A88;background:rgba(224,27,46,.12);}
.chip--blue{border-color:rgba(47,107,255,.5);color:#8FB0FF;background:rgba(47,107,255,.12);}
.chip--green{border-color:rgba(47,191,107,.5);color:#6FDFA0;background:rgba(47,191,107,.12);}
.chip--amber{border-color:rgba(245,165,36,.5);color:#F6C273;background:rgba(245,165,36,.12);}
.chip--slate{border-color:var(--line);color:var(--slate);background:rgba(154,166,191,.08);}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.zone--mist .chip--red{color:var(--red-deep);}
.zone--mist .chip--blue{color:#1F4FD8;}
.zone--mist .chip--green{color:#177C43;}

/* ---------- 06 header ---------- */
.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-100px;
  z-index:200;
  padding:10px 18px;
  background:var(--red);
  color:var(--white);
  font-family:var(--font-display);
  font-size:14px;
  font-weight:800;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px;}

.site-header{
  --header-h:66px;
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,11,13,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:box-shadow .2s var(--ease);
}
.site-header[data-scrolled]{
  --header-h:56px;
  box-shadow:0 14px 34px rgba(0,0,0,.55);
}
.header-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:var(--line);
  overflow:hidden;
}
.header-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--red-deep),var(--red));
  transition:width .1s linear;
}
.header-inner{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  transition:min-height .2s var(--ease);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  flex:0 0 auto;
}
.brand__mark{
  width:34px;height:34px;
  display:grid;
  place-items:center;
  background:linear-gradient(145deg,var(--red) 0%,var(--red-deep) 100%);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:-.02em;
}
.brand__text{display:flex;flex-direction:column;gap:1px;}
.brand__name{
  font-family:var(--font-display);
  font-size:17px;
  font-weight:900;
  letter-spacing:.02em;
  line-height:1.15;
  color:var(--white);
}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--slate);
  line-height:1.2;
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--mist);
  font-family:var(--font-display);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
}
.nav-toggle:hover{border-color:var(--red);}
.nav-toggle__bars{display:grid;gap:4px;width:16px;}
.nav-toggle__bars i{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg);}
.nav-toggle[aria-expanded="true"]{border-color:var(--red);color:var(--white);}

.site-nav{
  position:fixed;
  left:var(--gutter);
  right:var(--gutter);
  top:calc(var(--header-h) + 10px);
  z-index:90;
  display:grid;
  gap:12px;
  padding:14px;
  background:var(--ink);
  border:1px solid var(--line);
  box-shadow:0 30px 70px rgba(0,0,0,.7);
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility 0s linear .18s;
  max-height:calc(100vh - var(--header-h) - 28px);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.site-nav[data-open]{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility 0s;
}
body.is-nav-open{overflow:hidden;}

.nav-list{display:grid;gap:2px;}
.nav-item{min-width:0;}
.nav-link{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 14px;
  border:1px solid var(--line);
  font-size:16px;
  font-weight:500;
  color:var(--slate);
  transition:color .15s var(--ease),background-color .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease);
}
.nav-link:hover{color:var(--white);background:var(--panel);border-color:var(--line);}
.nav-link[aria-current="page"]{
  color:var(--white);
  background:var(--panel);
  border-color:var(--line);
  box-shadow:inset 3px 0 0 var(--red);
}
.nav-actions{display:grid;}
.nav-cta{width:100%;}

/* ---------- 07 footer ---------- */
.site-footer{
  background:var(--ink);
  border-top:1px solid var(--line);
  color:var(--slate);
  font-size:15px;
}
.footer-inner{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(40px,7vw,88px) var(--gutter) clamp(26px,4vw,40px);
}
.footer-grid{
  display:grid;
  gap:clamp(26px,4vw,44px);
  grid-template-columns:1fr;
  padding-bottom:clamp(28px,4vw,48px);
}
.footer-brand{display:grid;gap:12px;align-content:start;}
.footer-brand__name{
  font-family:var(--font-display);
  font-size:24px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--white);
}
.footer-brand__tagline{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--red);
  margin-top:-6px;
}
.footer-brand__desc{font-size:14px;line-height:1.8;color:var(--slate);max-width:38ch;}
.footer-col{display:grid;gap:14px;align-content:start;}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--white);
}
.footer-links{display:grid;gap:2px;}
.footer-link{
  display:inline-flex;
  align-items:center;
  min-height:34px;
  font-size:14px;
  color:var(--slate);
  border-bottom:1px solid transparent;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.footer-link:hover{color:var(--white);border-bottom-color:var(--red);}

.footer-contact{
  border:1px solid var(--line);
  background:var(--panel);
  padding:clamp(20px,3vw,32px);
  display:grid;
  gap:16px;
}
.footer-contact__title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--white);
}
.contact-list{display:grid;gap:2px;}
.contact-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 14px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
}
.contact-row:last-child{border-bottom:0;}
.contact-label{
  flex:0 0 84px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--slate);
}
.contact-value{
  flex:1 1 200px;
  min-width:0;
  font-family:var(--font-mono);
  font-size:14px;
  line-height:1.6;
  color:var(--white);
  word-break:break-word;
}
.copy-btn{
  min-height:36px;
  padding:0 14px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--slate);
  transition:color .15s var(--ease),border-color .15s var(--ease),background-color .15s var(--ease);
}
.copy-btn:hover{color:var(--white);border-color:var(--red);background:rgba(224,27,46,.12);}
.copy-btn[data-copied]{color:var(--green);border-color:var(--green);background:rgba(47,191,107,.12);}
.footer-contact__note{
  font-size:13px;
  line-height:1.8;
  color:var(--slate);
  max-width:70ch;
  border-left:2px solid var(--red);
  padding-left:14px;
}

.footer-bottom{
  margin-top:clamp(28px,4vw,48px);
  padding-top:20px;
  border-top:1px solid var(--line);
  display:grid;
  gap:10px;
}
.footer-note{font-size:13px;line-height:1.8;color:var(--slate);max-width:62ch;}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:#6E7A92;
}
.footer-copy{color:var(--slate);}
.footer-icp{color:#6E7A92;}

/* ---------- 08 components ---------- */
.cell{
  min-width:0;
  background:var(--panel);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,28px);
  display:grid;
  gap:10px;
  align-content:start;
}
.cell--focus{
  background:linear-gradient(150deg,var(--red) 0%,var(--red-deep) 100%);
  border-color:transparent;
  color:#FFE7EA;
  box-shadow:0 18px 44px rgba(224,27,46,.3);
}
.cell--focus h2,.cell--focus h3,.cell--focus h4{color:var(--white);}
.zone--mist .cell{background:var(--white);border-color:#DFE4EE;}
.zone--mist .cell--focus{background:linear-gradient(150deg,var(--red) 0%,var(--red-deep) 100%);}

.stat{display:grid;gap:2px;}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  font-size:clamp(40px,11vw,120px);
  line-height:.94;
  letter-spacing:-.04em;
  color:var(--white);
}
.cell--focus .stat__value{color:var(--white);}
.stat__label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--slate);
}
.cell--focus .stat__label{color:#FFD3D8;}

.table{font-variant-numeric:tabular-nums;}
.table th{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
  text-align:left;
  color:var(--slate);
  padding:10px 12px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.table td{
  padding:12px;
  font-size:15px;
  border-bottom:1px solid var(--line);
  color:var(--mist);
}
.table tbody tr{transition:background-color .15s var(--ease);}
.table tbody tr:hover{background:rgba(47,107,255,.08);}
.table .num{color:var(--white);font-weight:700;}
.zone--mist .table th{color:#5A6478;border-bottom-color:#DFE4EE;}
.zone--mist .table td{color:#12151B;border-bottom-color:#DFE4EE;}
.zone--mist .table tbody tr:hover{background:rgba(47,107,255,.07);}

.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:10px;
  border:1px solid var(--line);
  background:var(--panel);
}
.filter-btn{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 16px;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--slate);
  transition:color .15s var(--ease),background-color .15s var(--ease),border-color .15s var(--ease);
}
.filter-btn:hover{color:var(--white);background:rgba(47,107,255,.12);}
.filter-btn.is-active{
  color:var(--white);
  background:linear-gradient(140deg,var(--red),var(--red-deep));
  border-color:transparent;
}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--slate);
}
.zone--mist .filter-bar{background:var(--white);border-color:#DFE4EE;}

.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  aspect-ratio:var(--media-ratio,16/9);
}
.media > img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(140deg,rgba(224,27,46,.32) 0%,rgba(10,11,13,.72) 62%);
  pointer-events:none;
}
.media--plain::after{display:none;}
.media--wide{aspect-ratio:21/9;}
.media--tall{aspect-ratio:3/4;}
.media--square{aspect-ratio:1/1;}
.media:hover > img{transform:scale(1.04);}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 16px;
  font-size:13px;
  line-height:1.6;
  color:var(--white);
  background:linear-gradient(0deg,rgba(10,11,13,.88),rgba(10,11,13,0));
}

.texture-grid{
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:28px 28px;
  background-position:0 0;
}

/* ---------- 09 motion ---------- */
.js-reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
  will-change:opacity,transform;
}
.js-reveal.is-visible{opacity:1;transform:none;}

@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;
  }
  .js-reveal{opacity:1 !important;transform:none !important;}
  .media:hover > img{transform:none;}
}

/* ---------- 10 responsive ---------- */
@media (max-width:479px){
  .brand__tagline{display:none;}
  .contact-label{flex-basis:100%;}
}
@media (min-width:640px){
  .grid--cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
}
@media (min-width:900px){
  .nav-toggle{display:none;}
  .site-nav{
    position:static;
    display:flex;
    align-items:center;
    gap:clamp(8px,1.5vw,20px);
    padding:0;
    background:none;
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    transform:none;
    max-height:none;
    overflow:visible;
    transition:none;
  }
  .nav-list{display:flex;align-items:center;gap:2px;}
  .nav-actions{display:flex;align-items:center;}
  .nav-link{
    min-height:38px;
    padding:0 12px;
    font-size:14px;
    border-color:transparent;
  }
  .nav-link[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--red);}
  .nav-cta{width:auto;}

  .grid--bento{grid-template-columns:repeat(6,minmax(0,1fr));}
  .grid--duo{grid-template-columns:1.15fr .85fr;align-items:start;}
  .grid--duo.reverse{grid-template-columns:.85fr 1.15fr;}
  .cell--half{grid-column:span 3;}
  .cell--third{grid-column:span 2;}
  .cell--wide{grid-column:span 4;}
  .cell--full{grid-column:span 6;}
  .cell--tall{grid-row:span 2;}

  .footer-grid{grid-template-columns:1.6fr repeat(3,1fr);}
  .footer-brand{grid-column:auto;}
  .footer-bottom{grid-template-columns:1fr auto;align-items:end;}
  .footer-legal{justify-content:flex-end;}
}
@media (min-width:1024px){
  body{font-size:17px;}
  .grid--cards{grid-template-columns:repeat(3,minmax(0,1fr));}
  .contact-list{grid-template-columns:1fr;}
}
@media (min-width:1200px){
  .zone{padding-block:clamp(60px,8vw,120px);}
}