/* ============================================================
   /assets/site.css — 欧宝体育站 全站共享层
   赛场蓝图：坐标网格 / 粗描边 / 硬阴影 / 深墨绿与荧光青柠
   ============================================================ */

:root{
  --ink:#0B1F1A;
  --deep:#061210;
  --lime:#C8FF3D;
  --lime-dim:#8FBF2A;
  --amber:#FF7A2F;
  --review:#C2382F;
  --cold:#F2F6F3;
  --paper:#EDE6D6;
  --line:#2C4A40;
  --mist:#9DB3A8;
  --grid-line:rgba(44,74,64,.55);
  --paper-ink:#0B1F1A;
  --paper-mist:#5C6B62;

  --font-display:"Arial Narrow","Helvetica Neue",Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:Inter,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --shell:1240px;
  --pad:clamp(16px,4vw,44px);
  --gap:clamp(16px,2.4vw,28px);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:140px;
}

body{
  margin:0;
  background:var(--ink);
  color:var(--cold);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,svg,video{display:block;max-width:100%;height:auto;}

ul,ol{margin:0;padding:0;list-style:none;}

h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0;}

a{color:inherit;text-decoration:none;}

button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}

table{border-collapse:collapse;width:100%;}

input,select,textarea{font:inherit;color:inherit;}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
}

::selection{background:var(--lime);color:var(--deep);}

/* ---------- 中文排版 ---------- */
h1,.h1{
  font-family:var(--font-display);
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-size:clamp(2.4rem,5vw,4.2rem);
  line-height:1.02;
}
h2,.h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  line-height:1.26;
  letter-spacing:.01em;
}
h3,.h3{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.05rem,1.6vw,1.32rem);
  letter-spacing:.1em;
  text-transform:uppercase;
  line-height:1.4;
}
h4,.h4{
  font-family:var(--font-display);
  font-weight:700;
  font-size:.94rem;
  letter-spacing:.12em;
  text-transform:uppercase;
}

.micro,.eyebrow{
  font-family:var(--font-display);
  font-size:11px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
  line-height:1.6;
}

.num,.data-value,.stat-value{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat-value{
  display:block;
  font-size:clamp(1.6rem,3vw,2.4rem);
  line-height:1;
  color:var(--lime);
}
.stat-value--amber{color:var(--amber);}
.stat-value--cold{color:var(--cold);}

/* ---------- 布局骨架 ---------- */
.wrap{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding-inline:var(--pad);
}

.section{
  position:relative;
  padding-block:clamp(48px,7vw,104px);
}
.section--dark{background:var(--ink);color:var(--cold);}
.section--deep{background:var(--deep);color:var(--cold);}
.section--paper{background:var(--paper);color:var(--paper-ink);}
.section--paper .micro,
.section--paper .eyebrow{color:var(--paper-mist);}
.section--paper .stat-value{color:var(--ink);}
.section--paper .prose li::before{background:var(--ink);}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  padding-bottom:18px;
  border-bottom:2px solid var(--line);
  margin-bottom:clamp(24px,3vw,40px);
}
.section--paper .section-head{border-bottom-color:rgba(11,31,26,.25);}

.rule{
  height:1px;
  background:var(--line);
  border:0;
  margin-block:clamp(20px,3vw,36px);
}

.bp-lines{
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:80px 80px;
  background-position:center top;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-90px;
  z-index:200;
  padding:.7em 1.05em;
  background:var(--lime);
  color:var(--deep);
  font-family:var(--font-display);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  border:2px solid var(--deep);
  transition:top .18s ease;
}
.skip-link:focus{top:14px;}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:100;
  color:var(--cold);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .28s ease,border-color .28s ease;
}
.site-header[data-scrolled]{
  background:rgba(6,18,16,.95);
  border-bottom-color:var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,32px);
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:16px var(--pad);
  transition:padding .28s ease;
}
.site-header[data-scrolled] .header-inner{padding-block:9px;}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:.7em;
  flex:0 0 auto;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  border:2px solid var(--lime);
  background:var(--deep);
  color:var(--lime);
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.08rem;
  letter-spacing:0;
  box-shadow:4px 4px 0 rgba(200,255,61,.18);
  transition:box-shadow .2s ease,transform .2s ease;
}
.brand:hover .brand-mark{
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(200,255,61,.28);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.22;
  min-width:0;
}
.brand-name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:.98rem;
  letter-spacing:.15em;
  text-transform:uppercase;
  white-space:nowrap;
}
.brand-sub{
  font-size:.66rem;
  letter-spacing:.2em;
  color:var(--mist);
  white-space:nowrap;
}

/* 导航 */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.4vw,22px);
  margin-left:auto;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(2px,.5vw,8px);
}
.nav-link{
  position:relative;
  display:block;
  padding:.55em .6em;
  font-family:var(--font-display);
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.11em;
  text-transform:uppercase;
  color:var(--cold);
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:.6em;
  right:.6em;
  bottom:.24em;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--lime);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:var(--lime);}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}

.nav-cta{display:none;}

/* 动作区 */
.header-action{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  margin-left:0;
}

/* 汉堡按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.6em;
  padding:.58em .72em;
  border:2px solid var(--lime-dim);
  color:var(--lime);
  font-family:var(--font-display);
  font-size:.74rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--lime);}
.nav-toggle-lines{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  transition:background-color .2s ease;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .24s ease,top .24s ease;
}
.nav-toggle-lines::before{top:-6px;}
.nav-toggle-lines::after{top:6px;}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::after{top:0;transform:rotate(-45deg);}

/* 刻度信息条 */
.header-tape{
  overflow:hidden;
  max-height:44px;
  border-top:1px solid rgba(44,74,64,.75);
  opacity:1;
  transition:max-height .28s ease,opacity .24s ease,border-color .28s ease;
}
.site-header[data-scrolled] .header-tape{
  max-height:0;
  opacity:0;
  border-top-color:transparent;
}
.tape-inner{
  display:flex;
  align-items:center;
  gap:14px;
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:8px var(--pad);
}
.tape-item{
  font-family:var(--font-display);
  font-size:.68rem;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
  white-space:nowrap;
}
a.tape-item{color:var(--lime-dim);transition:color .2s ease;}
a.tape-item:hover{color:var(--lime);}
.tape-sep{
  width:1px;
  height:11px;
  background:var(--line);
  flex:0 0 auto;
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.74em 1.15em;
  border:2px solid var(--lime);
  background:transparent;
  color:var(--lime);
  font-family:var(--font-display);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  line-height:1;
  white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{
  background:var(--lime);
  color:var(--deep);
  box-shadow:4px 4px 0 rgba(6,18,16,.9);
}
.btn-primary:hover{
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(6,18,16,.95);
}
.btn-ghost{
  border-color:var(--lime-dim);
  color:var(--lime);
}
.btn-ghost:hover{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--deep);
}
.btn-amber{
  border-color:var(--amber);
  color:var(--amber);
}
.btn-amber:hover{
  background:var(--amber);
  color:var(--deep);
}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-display);
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
  padding-block:14px;
}
.crumbs li{
  display:flex;
  align-items:center;
  gap:10px;
}
.crumbs li::after{
  content:"/";
  color:var(--line);
}
.crumbs li:last-child::after{content:"";}
.crumbs a{color:var(--mist);transition:color .2s ease;}
.crumbs a:hover{color:var(--lime);}
.crumbs [aria-current="page"]{color:var(--cold);}

/* ---------- 正文 ---------- */
.prose{
  max-width:64ch;
  font-size:1rem;
  line-height:1.78;
  color:var(--cold);
}
.prose > * + *{margin-top:1.05em;}
.prose p{max-width:36em;}
.prose h2{margin-top:1.7em;color:var(--cold);}
.prose h3{margin-top:1.5em;color:var(--lime);}
.prose ul li,
.prose ol li{
  position:relative;
  padding-left:1.25em;
  margin-top:.55em;
}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.68em;
  width:9px;
  height:2px;
  background:var(--lime);
}
.prose ol{counter-reset:step;}
.prose ol li{counter-increment:step;}
.prose ol li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;
  top:0;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:700;
  color:var(--amber);
}
.prose strong{color:var(--lime);font-weight:700;}
.prose a{
  color:var(--lime);
  border-bottom:1px solid var(--lime-dim);
  transition:border-color .2s ease;
}
.prose a:hover{border-bottom-color:var(--lime);}
.section--paper .prose{color:var(--paper-ink);}
.section--paper .prose h2{color:var(--paper-ink);}
.section--paper .prose h3{color:#3E5A34;}
.section--paper .prose strong{color:#3E5A34;}
.section--paper .prose a{color:#3E5A34;border-bottom-color:#8FBF2A;}

.lede{
  font-size:clamp(1.02rem,1.5vw,1.18rem);
  line-height:1.7;
  color:var(--mist);
  max-width:36em;
}

/* ---------- 网格与卡片 ---------- */
.blueprint-grid{
  display:grid;
  gap:var(--gap);
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
.blueprint-grid--2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));}

.bp-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:clamp(18px,2.2vw,26px);
  background:var(--ink);
  border:2px solid var(--line);
  box-shadow:6px 6px 0 rgba(6,18,16,.9);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.bp-card:hover{
  transform:translate(-3px,-3px);
  border-color:var(--lime-dim);
  box-shadow:9px 9px 0 rgba(6,18,16,.95);
}
.bp-card--accent{border-color:var(--lime-dim);}
.bp-card--paper{
  background:var(--paper);
  color:var(--paper-ink);
  border-color:rgba(11,31,26,.28);
  box-shadow:6px 6px 0 rgba(11,31,26,.2);
}
.bp-card--paper .micro,
.bp-card--paper .eyebrow{color:var(--paper-mist);}
.bp-card--paper .stat-value{color:var(--ink);}

/* 状态标记 */
.flag{
  display:inline-flex;
  align-items:center;
  gap:.45em;
  padding:.32em .6em;
  font-family:var(--font-display);
  font-size:.66rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  border:1px solid var(--lime-dim);
  color:var(--lime);
}
.flag--review{
  background:var(--review);
  border-color:var(--review);
  color:var(--cold);
}
.flag--amber{
  border-color:var(--amber);
  color:var(--amber);
}

/* 分割线 + 微标签行 */
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}

/* ---------- 图片容器 ---------- */
.figure{
  position:relative;
  display:block;
  margin:0;
  border:2px solid var(--line);
  background:
    repeating-linear-gradient(135deg,rgba(44,74,64,.4) 0 12px,transparent 12px 24px),
    var(--deep);
  overflow:hidden;
  isolation:isolate;
}
.figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.figure figcaption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:9px 12px;
  background:rgba(6,18,16,.84);
  color:var(--mist);
  font-size:.7rem;
  letter-spacing:.1em;
  line-height:1.5;
}
.figure--wide{aspect-ratio:16/9;}
.figure--band{aspect-ratio:21/9;}
.figure--tall{aspect-ratio:3/4;}
.figure--square{aspect-ratio:1/1;}
.figure--offset{box-shadow:8px 8px 0 rgba(6,18,16,.9);}
.figure--paper{border-color:rgba(11,31,26,.3);background-color:var(--paper);}

/* ---------- 滚动进度 / 返回顶部 ---------- */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:120;
  pointer-events:none;
  background:transparent;
}
.scroll-progress span{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime) 0%,var(--lime-dim) 55%,var(--amber) 100%);
}

.to-top{
  position:fixed;
  right:clamp(16px,3vw,34px);
  bottom:clamp(16px,3vw,34px);
  z-index:110;
  display:inline-flex;
  align-items:center;
  gap:.5em;
  padding:.72em .95em;
  background:var(--lime);
  color:var(--deep);
  border:2px solid var(--deep);
  box-shadow:5px 5px 0 rgba(6,18,16,.85);
  font-family:var(--font-display);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  opacity:0;
  visibility:hidden;
  transform:translateY(16px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.to-top[data-visible]{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.to-top:hover{background:var(--amber);color:var(--deep);}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--deep);
  color:var(--mist);
  border-top:2px solid var(--line);
}
.footer-tape{
  height:14px;
  background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 26px);
  border-bottom:1px solid rgba(44,74,64,.6);
}
.footer-inner{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--pad) clamp(22px,3vw,30px);
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(260px,1.55fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,3.2vw,52px);
  align-items:start;
}

.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:14px;
}
.footer-lede{
  max-width:28em;
  font-size:.94rem;
  line-height:1.72;
  color:var(--mist);
}

.footer-col-title{
  font-family:var(--font-display);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lime-dim);
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.footer-list li + li{margin-top:9px;}
.footer-list a{
  display:inline-block;
  color:var(--cold);
  font-size:.94rem;
  line-height:1.5;
  transition:color .2s ease,transform .2s ease;
}
.footer-list a:hover{
  color:var(--lime);
  transform:translateX(3px);
}

.footer-coord{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  margin-top:clamp(28px,4vw,48px);
  border-top:1px solid var(--line);
  border-left:1px solid var(--line);
}
.coord-cell{
  padding:14px 16px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  min-width:0;
}
.coord-key{
  display:block;
  font-family:var(--font-display);
  font-size:.65rem;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist);
}
.coord-val{
  display:block;
  margin-top:7px;
  font-family:var(--font-mono);
  font-size:.86rem;
  font-weight:700;
  line-height:1.5;
  color:var(--cold);
  word-break:break-word;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:.78rem;
  line-height:1.6;
  color:var(--mist);
}
.legal-icp{
  font-family:var(--font-mono);
  font-weight:700;
  letter-spacing:.06em;
  color:var(--lime-dim);
}
.legal-sep{
  width:18px;
  height:1px;
  background:var(--line);
}
.legal-copy{color:var(--mist);}

/* ---------- 显现动效 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .42s ease,transform .42s ease;
}
.js [data-reveal][data-revealed]{
  opacity:1;
  transform:none;
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:minmax(240px,1.4fr) repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:980px){
  .header-action{margin-left:auto;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}

  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:block;
    margin:0;
    background:var(--deep);
    border-top:1px solid var(--line);
    border-bottom:2px solid var(--lime);
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    opacity:0;
    transition:max-height .3s ease,opacity .22s ease,visibility .3s ease;
  }
  .site-nav[data-open]{
    max-height:min(74vh,560px);
    overflow-y:auto;
    visibility:visible;
    opacity:1;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:6px 0;
  }
  .nav-link{
    padding:15px var(--pad);
    font-size:1rem;
    letter-spacing:.14em;
    border-bottom:1px solid rgba(44,74,64,.65);
  }
  .nav-link::after{display:none;}
  .nav-link[aria-current="page"]{
    color:var(--lime);
    background:rgba(200,255,61,.08);
    box-shadow:inset 3px 0 0 var(--lime);
  }
  .nav-cta{
    display:inline-flex;
    margin:18px var(--pad) 24px;
  }

  .prose{max-width:none;}
}

@media (max-width:760px){
  html{scroll-padding-top:110px;}
  body{font-size:16px;}
  .header-tape{display:none;}
  .brand-sub{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-coord{grid-template-columns:1fr;}
  .section-head{align-items:flex-start;}
}

@media (max-width:420px){
  .brand-mark{width:34px;height:34px;font-size:.95rem;}
  .brand-name{font-size:.9rem;letter-spacing:.1em;}
  .nav-toggle-text{display:none;}
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js [data-reveal]{
    opacity:1;
    transform:none;
  }
  .to-top{transform:none;}
  .bp-card:hover{transform:none;}
}