/* ============================================================
   米兰赛场 · 共享样式表  /assets/site.css
   沥青黑底 + 罗索红 + 意甲蓝 + 荧光绿：文字建筑式版面
   ============================================================ */

/* ---------- 01 变量 ---------- */
:root{
  --ink:#0B0C0F;
  --graphite:#16181D;
  --rosso:#C8102E;
  --wine:#7A1224;
  --blue-deep:#12294F;
  --blue:#2B4C8C;
  --teal:#0F3B36;
  --indigo:#3B2A6B;
  --neon:#B8FF3C;
  --paper:#F4F1EA;
  --ash:#A9A69E;
  --gold:#E8C36A;

  --font-display:"Archivo Black","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --wrap:1440px;
  --gutter:24px;
  --radius-sm:2px;
  --radius-pill:999px;
  --hairline:rgba(244,241,234,.14);
  --hairline-strong:rgba(244,241,234,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:160ms;
  --t-base:200ms;
}

/* ---------- 02 Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%;height:auto;}
a{color:inherit;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--neon);color:var(--ink);}

/* ---------- 03 焦点与可访问 ---------- */
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:2px;}
.skip-link{
  position:absolute;top:-120px;left:20px;z-index:300;
  padding:12px 20px;
  background:var(--neon);color:var(--ink);
  font-size:14px;font-weight:800;letter-spacing:.04em;text-decoration:none;
  border-radius:var(--radius-sm);
  transition:top var(--t-fast) var(--ease);
}
.skip-link:focus{top:14px;}

/* ---------- 04 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter);}
.wrap--narrow{max-width:900px;}
.site-main{display:block;min-height:60vh;}

/* ---------- 05 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  padding:14px var(--gutter) 0;
  transition:padding var(--t-base) var(--ease);
}
.site-header__inner{
  position:relative;
  max-width:var(--wrap);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  padding:9px 12px 9px 20px;
  border:1px solid var(--hairline);
  border-radius:var(--radius-pill);
  background:rgba(11,12,15,.82);
  -webkit-backdrop-filter:blur(16px) saturate(1.25);
  backdrop-filter:blur(16px) saturate(1.25);
  transition:padding var(--t-base) var(--ease),
             background-color var(--t-base) var(--ease),
             border-color var(--t-base) var(--ease);
}
.site-header.is-condensed{padding-top:8px;}
.site-header.is-condensed .site-header__inner{padding:6px 10px 6px 16px;}
.site-header.is-condensed .brand__mark{font-size:17px;}
.site-header.is-condensed .brand__mark::before{height:15px;margin-top:-7.5px;}
.site-header.is-condensed .brand__domain{max-height:0;opacity:0;}
.site-header.is-condensed .nav-capsule__link{padding:6px 11px;font-size:12.5px;}
.site-header[data-open="true"] .site-header__inner{border-color:var(--hairline-strong);}
.site-header[data-open="true"] .brand__domain{max-height:16px;opacity:1;}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--rosso) 0%,var(--blue) 58%,var(--neon) 100%);
  pointer-events:none;
  transition:transform 90ms linear;
}

/* ---------- 06 品牌字块 ---------- */
.brand{
  display:flex;flex-direction:column;justify-content:center;gap:1px;
  flex:0 0 auto;
  text-decoration:none;color:var(--paper);
}
.brand__mark{
  position:relative;
  padding-left:13px;
  font-family:var(--font-display);
  font-size:20px;font-weight:900;line-height:1.15;letter-spacing:.02em;
  transition:font-size var(--t-base) var(--ease);
}
.brand__mark::before{
  content:"";position:absolute;left:0;top:50%;
  width:4px;height:18px;margin-top:-9px;
  background:var(--rosso);
  transform:skewX(-8deg);
  transition:height var(--t-base) var(--ease),margin-top var(--t-base) var(--ease);
}
.brand__domain{
  max-height:16px;overflow:hidden;white-space:nowrap;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  color:var(--ash);
  transition:opacity var(--t-base) var(--ease),max-height var(--t-base) var(--ease);
}

/* ---------- 07 导航胶囊 ---------- */
.nav-capsule{
  flex:1 1 auto;min-width:0;
  display:flex;justify-content:center;
  margin:0 auto;
}
.nav-capsule__list{
  display:flex;align-items:center;gap:2px;
  padding:4px;
  list-style:none;
  border:1px solid rgba(244,241,234,.09);
  border-radius:var(--radius-pill);
  background:rgba(244,241,234,.04);
}
.nav-capsule__item{list-style:none;}
.nav-capsule__link{
  display:block;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  font-size:13.5px;font-weight:500;letter-spacing:.03em;
  white-space:nowrap;text-decoration:none;
  color:var(--ash);
  transition:color var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease),
             padding var(--t-base) var(--ease),
             font-size var(--t-base) var(--ease);
}
.nav-capsule__link:hover{
  color:var(--paper);
  background:rgba(244,241,234,.09);
  transform:translateY(-2px);
}
.nav-capsule__link[aria-current="page"]{
  color:var(--paper);
  background:var(--rosso);
  font-weight:700;
}
.nav-capsule__link[aria-current="page"]:hover{background:#E41538;color:var(--paper);}

/* ---------- 08 页头动作区 / 按钮 ---------- */
.site-header__actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  border:1px solid transparent;border-radius:var(--radius-pill);
  font-family:var(--font-body);
  font-size:13.5px;font-weight:700;line-height:1.2;letter-spacing:.05em;
  text-decoration:none;cursor:pointer;
  background:transparent;color:var(--paper);
  transition:transform var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease);
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn--primary{background:var(--rosso);color:var(--paper);}
.btn--primary:hover{background:#E41538;}
.btn--neon{background:var(--neon);color:var(--ink);}
.btn--neon:hover{background:#CBFF6B;}
.btn--ghost{border-color:var(--hairline-strong);color:var(--paper);background:transparent;}
.btn--ghost:hover{border-color:var(--neon);color:var(--neon);background:rgba(184,255,60,.08);}
.btn--sm{padding:8px 15px;font-size:12.5px;}
.header-cta{white-space:nowrap;}

.nav-toggle{
  display:none;
  align-items:center;gap:9px;
  padding:9px 14px;
  border:1px solid var(--hairline-strong);border-radius:var(--radius-pill);
  background:transparent;color:var(--paper);
  font-size:12.5px;font-weight:700;letter-spacing:.1em;
  cursor:pointer;
  transition:border-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon);}
.nav-toggle__label{line-height:1;}
.nav-toggle__bars{
  position:relative;display:block;
  width:16px;height:2px;border-radius:2px;
  background:currentColor;
  transition:background-color var(--t-fast) var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;
  width:16px;height:2px;border-radius:2px;
  background:currentColor;
  transition:transform var(--t-fast) var(--ease);
}
.nav-toggle__bars::before{top:-5px;}
.nav-toggle__bars::after{top:5px;}
.site-header[data-open="true"] .nav-toggle__bars{background-color:transparent;}
.site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg);}
.site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg);}

/* ---------- 09 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:110px;
  padding:88px 0 26px;
  background:var(--graphite);
  border-top:1px solid var(--hairline);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--rosso) 0 34%,var(--blue) 34% 66%,var(--neon) 66% 100%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.25fr;
  gap:56px 48px;
}
.footer-col{min-width:0;}
.footer-col--brand{max-width:46ch;}
.footer-col--brand::before{
  content:"";display:block;width:56px;height:3px;margin-bottom:20px;
  background:var(--rosso);
  transform:skewX(-10deg);
}
.footer-brand__mark{
  display:inline-block;
  font-family:var(--font-display);
  font-size:26px;font-weight:900;line-height:1.1;letter-spacing:.02em;
  color:var(--paper);
}
.footer-brand__text{
  margin:14px 0 0;
  max-width:42ch;
  font-size:14px;line-height:1.85;
  color:var(--ash);
}
.footer-capabilities{
  display:flex;flex-direction:column;gap:8px;
  margin:22px 0 0;
}
.footer-capabilities__item{
  display:flex;align-items:baseline;gap:10px;
  padding-top:8px;
  border-top:1px solid var(--hairline);
  font-size:13.5px;color:var(--paper);
}
.num{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
  color:var(--neon);
}
.footer-col__title{
  margin:0 0 18px;
  padding-bottom:10px;
  border-bottom:1px solid var(--hairline-strong);
  font-family:var(--font-mono);
  font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--paper);
}
.footer-list{display:flex;flex-direction:column;gap:9px;}
.footer-list__link{
  display:inline-block;
  font-size:14px;color:var(--ash);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease);
}
.footer-list__link:hover{
  color:var(--paper);
  border-bottom-color:var(--neon);
  transform:translateX(3px);
}
.footer-contact{display:flex;flex-direction:column;gap:14px;}
.footer-contact__item{
  display:flex;flex-direction:column;gap:2px;
  font-size:13.5px;line-height:1.7;color:var(--paper);
  overflow-wrap:break-word;
}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ash);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 28px;
  margin-top:64px;padding-top:20px;
  border-top:1px solid var(--hairline);
}
.footer-bottom__copy{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.05em;
  color:var(--ash);
}
.footer-bottom__links{
  display:flex;flex-wrap:wrap;gap:8px 22px;
}
.footer-bottom__links a{
  font-size:12.5px;color:var(--ash);text-decoration:none;
  padding-bottom:1px;
  border-bottom:1px solid rgba(244,241,234,.25);
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.footer-bottom__links a:hover{color:var(--paper);border-bottom-color:var(--neon);}

/* ---------- 10 面包屑 ---------- */
.breadcrumb{padding:22px 0 0;}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.1em;
  color:var(--ash);
}
.breadcrumb__item{display:flex;align-items:center;gap:8px;}
.breadcrumb__item::after{content:"/";color:rgba(244,241,234,.28);}
.breadcrumb__item:last-child::after{content:none;}
.breadcrumb__link{
  color:var(--ash);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.breadcrumb__link:hover{color:var(--paper);border-bottom-color:var(--neon);}
.breadcrumb__current{color:var(--paper);}

/* ---------- 11 刊头与章节 ---------- */
.page-header{padding:56px 0 8px;}
.page-title{
  margin:16px 0 14px;
  font-family:var(--font-display);
  font-size:clamp(40px,6.4vw,88px);
  font-weight:900;line-height:1.02;letter-spacing:-.02em;
}
.page-lede{
  max-width:64ch;
  font-size:clamp(16px,1.6vw,19px);
  line-height:1.8;
  color:var(--ash);
}
.section{padding:64px 0;border-top:1px solid var(--hairline);}
.section--flush{border-top:0;padding-top:0;}
.section--graphite{background:var(--graphite);}
.section--wine{background:var(--wine);}
.section--blue{background:var(--blue-deep);}
.section--teal{background:var(--teal);}
.section--indigo{background:var(--indigo);}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;
  margin-bottom:36px;
}
.section__title{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-size:clamp(28px,3.6vw,46px);
  font-weight:900;line-height:1.08;letter-spacing:-.015em;
}
.section__lede{
  margin:12px 0 0;
  max-width:62ch;
  font-size:16.5px;line-height:1.8;
  color:var(--ash);
}
.rule{height:1px;border:0;background:var(--hairline);}
.rule--accent{
  height:2px;
  background:linear-gradient(90deg,var(--rosso) 0%,var(--blue) 52%,transparent 100%);
}

/* ---------- 12 标签 ---------- */
.label{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 10px;
  border:1px solid var(--hairline-strong);border-radius:var(--radius-sm);
  font-family:var(--font-mono);
  font-size:11px;font-weight:500;line-height:1.4;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ash);
  background:transparent;
}
.label--accent{border-color:var(--rosso);color:var(--paper);background:rgba(200,16,46,.18);}
.label--neon{border-color:rgba(184,255,60,.6);color:var(--neon);background:rgba(184,255,60,.08);}
.label--blue{border-color:rgba(43,76,140,.9);color:#BBCDF0;background:rgba(43,76,140,.28);}

/* ---------- 13 网格与卡片 ---------- */
.grid{display:grid;gap:32px;}
.grid--7-5{grid-template-columns:7fr 5fr;}
.grid--5-7{grid-template-columns:5fr 7fr;}
.grid--4-8{grid-template-columns:4fr 8fr;}
.grid--8-4{grid-template-columns:8fr 4fr;}
.grid--3-9{grid-template-columns:3fr 9fr;}
.grid--9-3{grid-template-columns:9fr 3fr;}
.grid--cards{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;}

.card{
  position:relative;
  padding:24px 22px;
  border:1px solid var(--hairline);border-radius:var(--radius-sm);
  background:rgba(244,241,234,.035);
  transition:transform var(--t-base) var(--ease),
             border-color var(--t-base) var(--ease),
             background-color var(--t-base) var(--ease);
}
.card::before{
  content:"";position:absolute;top:-1px;left:-1px;
  width:32px;height:32px;
  border-top:2px solid var(--rosso);
  border-left:2px solid var(--rosso);
  transition:width var(--t-base) var(--ease),
             height var(--t-base) var(--ease),
             border-color var(--t-base) var(--ease);
}
.card:hover{
  transform:translateY(-3px);
  border-color:var(--hairline-strong);
  background:rgba(244,241,234,.055);
}
.card:hover::before{border-color:var(--neon);width:48px;height:48px;}
.card__title{
  margin:14px 0 8px;
  font-family:var(--font-display);
  font-size:20px;font-weight:900;line-height:1.25;letter-spacing:.005em;
}
.card__meta{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.08em;
  color:var(--ash);
}

/* ---------- 14 图片容器（页面阶段放图） ---------- */
.media{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--hairline);border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--blue-deep) 0%,var(--ink) 68%);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(118deg,rgba(244,241,234,.06) 0 1px,transparent 1px 14px);
}
.media--wide{aspect-ratio:21/9;}
.media--square{aspect-ratio:1/1;}
.media--portrait{aspect-ratio:3/4;}
.media--tall{aspect-ratio:4/5;}
.media__img{width:100%;height:100%;object-fit:cover;}
.media__caption{
  margin:10px 0 0;
  font-size:13px;line-height:1.7;
  color:var(--ash);
}

/* ---------- 15 文字工具 ---------- */
.mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.prose{max-width:74ch;}
.prose p{margin:0 0 18px;font-size:16.5px;line-height:1.85;color:#DCD8CF;}
.prose h3{margin:34px 0 12px;font-size:21px;font-weight:800;line-height:1.35;}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:8px;line-height:1.8;color:#DCD8CF;}
.prose a{color:var(--paper);text-decoration:none;border-bottom:1px solid var(--blue);}
.prose a:hover{border-bottom-color:var(--neon);}

/* ---------- 16 显现动效 ---------- */
html.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
html.js-ready [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 17 响应式 ---------- */
@media (max-width:1180px){
  .nav-capsule__link{padding:8px 11px;font-size:13px;}
  .header-cta{padding:9px 14px;font-size:12.5px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:48px 36px;}
  .footer-col--brand{grid-column:1 / -1;max-width:none;}
  .footer-brand__text{max-width:56ch;}
}

@media (max-width:980px){
  .site-header{padding:10px 16px 0;}
  .nav-toggle{display:inline-flex;}
  .nav-capsule{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;flex-direction:column;margin:0;
  }
  .site-header[data-open="true"] .nav-capsule{display:flex;}
  .nav-capsule__list{
    flex-direction:column;align-items:stretch;gap:4px;
    padding:10px;
    border-radius:14px;
    background:var(--graphite);
    box-shadow:0 26px 60px rgba(0,0,0,.55);
  }
  .nav-capsule__link{padding:12px 14px;font-size:15px;border-radius:10px;}
  .site-header.is-condensed .nav-capsule__link{padding:12px 14px;font-size:15px;}
  .grid--7-5,.grid--5-7,.grid--4-8,.grid--8-4,.grid--3-9,.grid--9-3{
    grid-template-columns:1fr;gap:28px;
  }
  .section{padding:52px 0;}
  .site-footer{margin-top:80px;padding-top:64px;}
}

@media (max-width:760px){
  .header-cta{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:44px 28px;}
}

@media (max-width:600px){
  :root{--gutter:18px;}
  .page-header{padding:36px 0 4px;}
  .section{padding:44px 0;}
  .section__head{margin-bottom:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:48px;}
  .card{padding:20px 18px;}
}

/* ---------- 18 降低动效 ---------- */
@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-ready [data-reveal]{opacity:1;transform:none;}
  .nav-capsule__link:hover,
  .btn:hover,
  .btn:active,
  .card:hover,
  .footer-list__link:hover,
  .site-header.is-condensed .nav-capsule__link{transform:none;}
}