/* =========================================================
   安博体育 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ========================================================= */

:root{
  --deep:#0A1B33;
  --deck:#12305A;
  --orange:#FF6A2B;
  --amber:#E8A33D;
  --amber-light:#FFD08A;
  --teal:#17C3A2;
  --blue:#2E8BFF;
  --mist:#F4F7FC;
  --graphite:#101826;
  --stone:#C9D3E0;
  --coral:#FF5A5F;

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

  --maxw:1320px;
  --gutter:clamp(16px,4vw,56px);
  --header-h:76px;
  --cut:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-card:0 22px 44px -26px rgba(4,12,24,.72);
  --line-dark:rgba(201,211,224,.22);
  --line-light:rgba(16,24,38,.14);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--graphite);
  background:var(--mist);
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.15}
p{margin:0 0 1.2em}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.btn:focus-visible,.cut-card:focus-visible,.media-frame:focus-visible,.filter-btn:focus-visible{outline-offset:-4px}

.skip-link{
  position:absolute;left:14px;top:-72px;z-index:140;
  padding:10px 18px;background:var(--orange);color:#160701;
  font-weight:700;font-size:14px;transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- 排版刻度 ---------- */
.display-1{font-size:clamp(38px,6.2vw,72px);line-height:1.05;font-weight:900;letter-spacing:-.03em}
.section-title{font-size:clamp(26px,3.4vw,40px);line-height:1.15;font-weight:900;letter-spacing:-.02em}
.section-note{font-size:14px;line-height:1.65;color:rgba(16,24,38,.6);max-width:46ch}
.section--dark .section-note,.section--deck .section-note{color:rgba(201,211,224,.68)}

.index-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--orange);
}
.index-label::before{content:"";width:24px;height:1px;background:currentColor}

.stat-num{
  display:block;font-family:var(--font-mono);font-weight:600;line-height:1;
  font-size:clamp(40px,6vw,96px);letter-spacing:-.03em;color:var(--blue);
}
.stat-label{display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:rgba(201,211,224,.68)}
.stat-delta{font-family:var(--font-mono);font-size:13px;letter-spacing:.06em}
.delta-up{color:var(--teal)}
.delta-down{color:var(--coral)}

/* ---------- 容器与网格 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.container--narrow{max-width:820px}
.section{padding:clamp(48px,7vw,104px) 0}
.section--mist{background:var(--mist);color:var(--graphite)}
.section--deck{background:var(--deck);color:var(--mist)}
.section--dark{background:var(--deep);color:var(--mist)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;padding-bottom:16px;margin-bottom:clamp(24px,3vw,40px);
  border-bottom:1px solid var(--line-light);
}
.section--dark .section-head,.section--deck .section-head{border-bottom-color:var(--line-dark)}
.section--dark .section-title,.section--deck .section-title{color:#fff}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--asym{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--asym-rev{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;font-size:15px;font-weight:700;letter-spacing:.01em;
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--orange);color:#180800}
.btn-primary:hover{background:var(--amber);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--stone);box-shadow:inset 0 0 0 1px rgba(201,211,224,.38)}
.btn-ghost:hover{color:#fff;box-shadow:inset 0 0 0 1px var(--orange)}
.btn-quiet{background:rgba(46,139,255,.14);color:var(--blue);box-shadow:inset 0 0 0 1px rgba(46,139,255,.4)}
.btn-quiet:hover{background:rgba(46,139,255,.24)}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:18px 0 6px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em}
.breadcrumb-item{display:inline-flex;align-items:center;gap:10px;color:rgba(201,211,224,.68)}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--orange)}
.breadcrumb-link{border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumb-link:hover{color:#fff;border-bottom-color:var(--orange)}
.breadcrumb-current{color:#fff}
.sep{opacity:.45;margin:0 6px}

/* ---------- 切角卡片 / 展签 ---------- */
.cut-card{
  position:relative;display:block;padding:clamp(20px,2.4vw,32px);
  background:#fff;border:1px solid var(--line-light);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.cut-card::after{
  content:"";position:absolute;top:0;right:0;width:var(--cut);height:var(--cut);
  background:rgba(16,24,38,.12);transition:background-color .18s var(--ease);
}
.cut-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(255,106,43,.4)}
.cut-card:hover::after{background:var(--orange)}
.cut-card__index{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--orange)}
.cut-card__title{font-size:22px;font-weight:900;margin:10px 0 8px;letter-spacing:-.02em}
.cut-card__note{font-size:14px;line-height:1.65;color:rgba(16,24,38,.62);margin:0}
.section--dark .cut-card,.section--deck .cut-card{background:var(--deck);border-color:var(--line-dark);color:var(--mist)}
.section--dark .cut-card__note,.section--deck .cut-card__note{color:rgba(201,211,224,.68)}

.tag{
  display:inline-block;padding:4px 9px;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.1em;color:var(--blue);background:rgba(46,139,255,.12);border-left:2px solid var(--blue);
}
.tag--award{color:var(--amber);background:linear-gradient(90deg,rgba(232,163,61,.22),rgba(255,208,138,.12));border-left-color:var(--amber)}

.filter-row{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  padding:8px 14px;color:var(--graphite);background:transparent;
  border:1px solid var(--line-light);
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.filter-btn:hover{border-color:var(--orange)}
.filter-btn[aria-pressed="true"]{background:var(--deep);color:#fff;border-color:var(--orange);box-shadow:inset 0 0 0 1px var(--orange)}
.section--dark .filter-btn,.section--deck .filter-btn{color:var(--stone);border-color:var(--line-dark)}

/* ---------- 图片容器（页面阶段放图） ---------- */
.media-frame{
  position:relative;overflow:hidden;margin:0;
  background:linear-gradient(140deg,var(--deck) 0%,var(--deep) 72%);
  border:1px solid var(--line-dark);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
}
.media-frame img,.media-frame video{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-frame--wide img,.media-frame--wide video{aspect-ratio:21/9}
.media-frame--square img,.media-frame--square video{aspect-ratio:1/1}
.media-caption{
  display:block;padding:10px 2px 0;font-family:var(--font-mono);
  font-size:12px;letter-spacing:.08em;color:rgba(201,211,224,.68);
}
.media-placeholder{
  display:flex;align-items:flex-end;aspect-ratio:16/10;padding:16px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:rgba(201,211,224,.6);
}

/* ---------- 装饰 ---------- */
.speedlines{
  position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,106,43,.16) 0 1px,transparent 1px 28px);
}
.slash-divider{height:1px;background:linear-gradient(90deg,var(--orange),rgba(255,106,43,0));margin:clamp(28px,4vw,56px) 0}

/* ---------- 长文 ---------- */
.prose{max-width:72ch;font-size:17px;line-height:1.75}
.prose h2{font-size:clamp(24px,2.6vw,32px);margin:1.7em 0 .6em}
.prose h3{font-size:21px;margin:1.5em 0 .5em}
.prose ul,.prose ol{margin:0 0 1.2em 1.3em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.45em}
.prose a{color:var(--deep);border-bottom:1px solid var(--orange)}
.section--dark .prose,.section--deck .prose{color:var(--stone)}
.section--dark .prose a,.section--deck .prose a{color:var(--amber-light);border-bottom-color:currentColor}

/* =========================================================
   页头
   ========================================================= */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(10,27,51,.97),rgba(18,48,90,.93));
  backdrop-filter:blur(10px);
  transition:box-shadow .2s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,211,224,.28) 18%,rgba(255,106,43,.7) 52%,transparent);
}
body[data-scrolled="true"] .site-header{box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.header-beam{
  position:absolute;right:-30px;top:-48px;width:240px;height:132px;pointer-events:none;
  background:linear-gradient(135deg,rgba(255,106,43,.32),rgba(255,106,43,0) 72%);
  clip-path:polygon(34% 0,100% 0,72% 100%,0 100%);
}
.header-inner{
  position:relative;z-index:2;display:grid;
  grid-template-columns:auto minmax(0,1fr) auto auto;
  align-items:center;gap:clamp(14px,2vw,30px);
  width:100%;max-width:var(--maxw);min-height:var(--header-h);
  margin:0 auto;padding:0 var(--gutter);
}
.brand{display:inline-flex;flex-direction:column;gap:2px}
.brand-mark{
  position:relative;padding-right:14px;color:#fff;
  font-size:22px;font-weight:900;letter-spacing:-.02em;line-height:1.1;
}
.brand-mark::after{
  content:"";position:absolute;right:0;top:5px;width:8px;height:8px;background:var(--orange);
  clip-path:polygon(0 0,100% 0,100% 100%);
}
.brand-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:rgba(201,211,224,.65)}

.header-rail{min-width:0;display:flex;justify-content:center}
.calib-strip{
  position:relative;display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:rgba(201,211,224,.8);border:1px dashed rgba(201,211,224,.24);
}
.calib-strip::after{
  content:"";position:absolute;right:-14px;top:50%;width:26px;height:1px;
  background:linear-gradient(90deg,var(--orange),transparent);
}
.calib-dot{
  flex:none;width:8px;height:8px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 3px rgba(23,195,162,.18);
}
.calib-badge{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:7px 10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--stone);border:1px solid rgba(201,211,224,.2);
}
.calib-pop{
  position:absolute;top:calc(100% + 10px);right:0;z-index:30;width:262px;
  padding:12px 14px;background:var(--graphite);color:var(--stone);
  font-family:var(--font-sans);font-size:13px;line-height:1.65;letter-spacing:0;
  border-left:3px solid var(--orange);
  opacity:0;transform:translateY(-6px);pointer-events:none;
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.calib-strip .calib-pop{left:50%;right:auto;transform:translate(-50%,-6px);text-align:left}
.calib-badge:hover .calib-pop,.calib-badge:focus-within .calib-pop,
.calib-strip:hover .calib-pop,.calib-strip:focus-within .calib-pop{opacity:1;pointer-events:auto}
.calib-badge:hover .calib-pop,.calib-badge:focus-within .calib-pop{transform:translateY(0)}
.calib-strip:hover .calib-pop,.calib-strip:focus-within .calib-pop{transform:translate(-50%,0)}

.nav-list{display:flex;align-items:center;gap:clamp(2px,.9vw,12px)}
.nav-item{display:flex}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 10px 10px 12px;font-size:15px;font-weight:600;color:var(--stone);
  transition:color .18s var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:18px;background:var(--orange);
  transform:translateY(-50%) scaleY(0);transform-origin:50% 50%;
  transition:transform .18s var(--ease);
}
.nav-index{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:rgba(201,211,224,.5);opacity:0;transform:translateX(-4px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:#fff}
.nav-link:hover::before,.nav-link:focus-visible::before{transform:translateY(-50%) scaleY(1)}
.nav-link:hover .nav-index,.nav-link:focus-visible .nav-index{opacity:1;transform:none}
.nav-link[aria-current="page"]{color:#fff}
.nav-link[aria-current="page"]::before{background:var(--blue);transform:translateY(-50%) scaleY(1)}
.nav-link[aria-current="page"] .nav-index{opacity:1;transform:none;color:var(--orange)}

.header-actions{display:flex;align-items:center;gap:14px}
.utility-link{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--stone);
  padding:8px 2px;border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.utility-link:hover{color:#fff;border-bottom-color:var(--orange)}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:46px;height:46px;border:1px solid rgba(201,211,224,.28);
  transition:border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--orange)}
.nav-toggle-bars{position:relative;display:block;width:18px;height:2px;background:var(--stone);transition:background-color .18s var(--ease)}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--stone);
  transition:transform .2s var(--ease),background-color .18s var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg);background:var(--orange)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg);background:var(--orange)}

.scroll-progress{
  position:absolute;left:0;bottom:0;z-index:3;width:100%;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--orange),var(--amber),var(--teal));
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;overflow:hidden;
  padding:clamp(72px,8vw,120px) 0 34px;
  background:linear-gradient(165deg,var(--deep) 0%,#081527 100%);
  color:var(--stone);
  clip-path:polygon(0 34px,100% 0,100% 100%,0 100%);
}
.footer-speedlines{
  position:absolute;right:-10%;top:-10%;width:70%;height:90%;pointer-events:none;opacity:.55;
  background-image:repeating-linear-gradient(112deg,rgba(255,106,43,.14) 0 1px,transparent 1px 30px);
}
.footer-inner{position:relative;z-index:1;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,3vw,48px);
}
.footer-brand .brand-mark{color:#fff}
.footer-brand-line{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:rgba(201,211,224,.62);margin:14px 0 10px}
.footer-brand-note{font-size:14px;line-height:1.7;color:rgba(201,211,224,.72);max-width:38ch;margin-bottom:20px}
.footer-col-title{
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--orange);margin-bottom:16px;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:15px;color:var(--stone);border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--orange)}
.footer-contact{
  display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:clamp(32px,4vw,56px);
  padding-top:22px;border-top:1px dashed rgba(201,211,224,.2);
}
.footer-contact-item{margin:0;font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--stone)}
.footer-contact-label{color:rgba(201,211,224,.5);margin-right:10px}
.footer-note{font-size:13px;line-height:1.7;color:rgba(201,211,224,.58);max-width:76ch;margin:16px 0 0}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 32px;
  margin-top:clamp(28px,3.4vw,44px);padding-top:20px;border-top:1px solid rgba(201,211,224,.16);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:rgba(201,211,224,.7);
}
.footer-legal p{margin:0}
.footer-legal a{border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer-legal a:hover{color:var(--orange);border-bottom-color:var(--orange)}

/* =========================================================
   动效与显现
   ========================================================= */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1180px){
  .header-inner{gap:14px}
  .nav-link{padding:10px 8px}
  .nav-link .nav-index{display:none}
}

@media (max-width:1080px){
  .header-inner{grid-template-columns:minmax(0,1fr) auto;min-height:66px}
  .header-rail{display:none}
  .nav-toggle{display:inline-flex}
  .nav-primary{
    position:fixed;top:66px;right:0;bottom:0;left:auto;z-index:55;
    width:min(88vw,420px);overflow-y:auto;
    padding:30px var(--gutter) 56px;
    background:linear-gradient(160deg,var(--deck),var(--deep) 66%);
    clip-path:polygon(14% 0,100% 0,100% 100%,0 100%);
    transform:translateX(103%);
    transition:transform .28s var(--ease);
    box-shadow:-30px 0 70px -30px rgba(0,0,0,.85);
  }
  .nav-primary[data-open]{transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{display:block;border-bottom:1px dashed rgba(201,211,224,.16)}
  .nav-link{padding:16px 4px;font-size:17px;width:100%}
  .nav-link .nav-index{display:inline-block}
  .nav-item .btn{margin-top:22px;border-bottom:0;justify-content:center;width:100%;padding:14px 20px}
  .nav-item:last-child{border-bottom:0}
  body[data-nav-open]::after{
    content:"";position:fixed;inset:0;z-index:50;background:rgba(8,21,39,.62);
  }
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--asym,.grid--asym-rev{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:720px){
  body{font-size:16px}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .utility-link{display:none}
  .calib-badge{font-size:10px;letter-spacing:.08em;padding:6px 8px}
  .calib-pop{width:220px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-legal{justify-content:flex-start}
  .site-footer{clip-path:polygon(0 20px,100% 0,100% 100%,0 100%)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .cut-card:hover{transform:none}
  .btn-primary:hover{transform:none}
  .nav-primary{transition:none}
}