/* =========================================================
   买球网 maiqiuwang-sports-timeline-ai
   全站设计系统：暖白 + 深体育蓝 + 信息青 + 时间线橙 + 石墨灰
   ========================================================= */

:root{
  --c-bg:#faf8f4;
  --c-bg-alt:#f2eee4;
  --c-surface:#ffffff;
  --c-ink:#1c2530;
  --c-ink-soft:#4b5563;
  --c-ink-faint:#8a93a1;
  --c-border:#e4e0d6;
  --c-border-soft:#ece8de;

  --c-navy:#12305c;
  --c-navy-deep:#0b1f3f;
  --c-navy-tint:#e7edf6;

  --c-cyan:#0f8b9c;
  --c-cyan-tint:#e2f4f5;

  --c-orange:#d97b2c;
  --c-orange-tint:#faeadb;

  --c-graphite:#3a3f47;

  --c-rumor:#a3762c;
  --c-rumor-bg:#faf0dc;
  --c-reported:#0f6fa8;
  --c-reported-bg:#e5f1f9;
  --c-negotiating:#7a4fb5;
  --c-negotiating-bg:#f0e9fa;
  --c-official:#1e7a4c;
  --c-official-bg:#e3f4ea;
  --c-corrected:#b3423a;
  --c-corrected-bg:#fbe8e6;

  --radius-s:6px;
  --radius-m:12px;
  --radius-l:20px;

  --shadow-card:0 1px 2px rgba(18,48,92,.06), 0 6px 20px rgba(18,48,92,.06);
  --shadow-pop:0 10px 30px rgba(18,48,92,.14);

  --font-base: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;

  --maxw:1160px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;overflow-x:hidden;width:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-base);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  width:100%;
  position:relative;
}
img,svg{max-width:100%;display:block;}
a{color:var(--c-navy);text-decoration:none;}
a:hover{text-decoration:underline;}
ul,ol{padding-left:1.3em;}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;font-weight:700;color:var(--c-ink);}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- Top bar / notice ---------- */
.top-notice{
  background:var(--c-navy-deep);
  color:#cfe0f5;
  font-size:13px;
  padding:7px 0;
  text-align:center;
  letter-spacing:.02em;
}
.top-notice strong{color:#fff;}

/* ---------- Header / Nav ---------- */
header.site-header{
  background:rgba(250,248,244,.92);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid var(--c-border);
  position:sticky;top:0;z-index:100;
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;
  gap:16px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:20px;color:var(--c-navy-deep);
}
.brand .logo-mark{width:34px;height:34px;flex:none;}
.brand small{
  display:block;font-weight:500;font-size:11px;color:var(--c-ink-faint);letter-spacing:.03em;
}
nav.main-nav{display:flex;align-items:center;gap:2px;}
nav.main-nav a{
  display:inline-block;padding:9px 13px;border-radius:8px;
  color:var(--c-ink-soft);font-size:14.5px;font-weight:600;
  white-space:nowrap;
}
nav.main-nav a:hover,nav.main-nav a.active{
  background:var(--c-navy-tint);color:var(--c-navy-deep);text-decoration:none;
}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-orange);color:#fff !important;
  padding:9px 16px;border-radius:999px;font-weight:700;font-size:14px;
}
.nav-cta:hover{background:#c06a20;text-decoration:none;}
.nav-toggle{
  display:none;background:none;border:1px solid var(--c-border);border-radius:8px;
  padding:8px 10px;cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-navy-deep);margin:4px 0;}

@media (max-width:900px){
  nav.main-nav{
    position:fixed;inset:0 0 0 auto;width:78%;max-width:320px;
    background:var(--c-surface);
    flex-direction:column;align-items:stretch;
    padding:80px 18px 24px;gap:4px;
    box-shadow:var(--shadow-pop);
    transform:translateX(100%);transition:transform .25s ease;
    overflow-y:auto;
  }
  nav.main-nav.open{transform:translateX(0);}
  nav.main-nav a{padding:12px 14px;font-size:16px;}
  .nav-toggle{display:block;}
  .nav-cta{margin-top:10px;text-align:center;justify-content:center;}
  .nav-backdrop{
    display:none;position:fixed;inset:0;background:rgba(11,31,63,.35);z-index:90;
  }
  .nav-backdrop.open{display:block;}
}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(160deg,var(--c-navy-deep) 0%,var(--c-navy) 62%,#164a7a 100%);
  color:#eaf1fb;padding:56px 0 64px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(15,139,156,.35),transparent 70%);
}
.hero .container{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;color:#cfe0f5;margin-bottom:16px;
}
.hero h1{color:#fff;font-size:34px;margin-bottom:16px;}
.hero p.lead{color:#d6e2f2;font-size:16.5px;max-width:60ch;}
.hero-actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:10px;font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent;
}
.btn-primary{background:var(--c-orange);color:#fff;}
.btn-primary:hover{background:#c06a20;text-decoration:none;}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35);}
.btn-ghost:hover{background:rgba(255,255,255,.18);text-decoration:none;}
.btn-outline{background:transparent;border-color:var(--c-navy);color:var(--c-navy);}
.btn-outline:hover{background:var(--c-navy-tint);text-decoration:none;}
.hero-visual{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-l);padding:18px;}
.hero-visual figcaption{color:#b9c9e0;font-size:12.5px;margin-top:10px;text-align:center;}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero h1{font-size:27px;}
}

/* ---------- Page header (secondary pages) ---------- */
.page-hero{
  background:linear-gradient(150deg,var(--c-navy-deep),var(--c-navy) 70%);
  color:#eaf1fb;padding:44px 0 40px;
}
.page-hero h1{color:#fff;font-size:29px;margin-bottom:10px;}
.page-hero p{color:#d6e2f2;max-width:70ch;font-size:15.5px;margin-bottom:0;}
.page-hero .crumb{color:#9fb6d6;font-size:13px;margin-bottom:12px;}
.page-hero .crumb a{color:#cfe0f5;}

/* ---------- Section scaffolding ---------- */
section{padding:52px 0;}
section.alt{background:var(--c-bg-alt);}
.section-head{max-width:760px;margin-bottom:30px;}
.section-tag{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:var(--c-cyan);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:25px;}
.section-head p{color:var(--c-ink-soft);font-size:15px;}

/* ---------- Status badges ---------- */
.status{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:700;
}
.status::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor;}
.status-rumor{background:var(--c-rumor-bg);color:var(--c-rumor);}
.status-reported{background:var(--c-reported-bg);color:var(--c-reported);}
.status-negotiating{background:var(--c-negotiating-bg);color:var(--c-negotiating);}
.status-official{background:var(--c-official-bg);color:var(--c-official);}
.status-corrected{background:var(--c-corrected-bg);color:var(--c-corrected);}

.source-tag{
  display:inline-flex;align-items:center;gap:5px;
  font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:6px;
  background:var(--c-graphite);color:#fff;letter-spacing:.02em;
}
.source-tag.lv-a{background:#1e7a4c;}
.source-tag.lv-b{background:#0f6fa8;}
.source-tag.lv-c{background:#8a7a3a;}
.source-tag.lv-d{background:#8a93a1;}

/* ---------- Article cards / grid ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
@media (max-width:900px){.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-m);
  padding:22px;box-shadow:var(--shadow-card);
}

/* ---------- Long-form article block (homepage core articles) ---------- */
.article-block{
  background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-l);
  padding:32px 32px 30px;margin-bottom:26px;box-shadow:var(--shadow-card);
  scroll-margin-top:90px;
}
.article-block .article-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;background:var(--c-navy-tint);color:var(--c-navy-deep);
  font-weight:800;font-size:15px;margin-right:10px;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:14px;}
.article-meta .cat{
  font-size:12.5px;font-weight:700;color:var(--c-cyan);text-transform:uppercase;letter-spacing:.05em;
}
.article-block h3{font-size:21px;margin-bottom:14px;}
.article-block .lede{font-weight:600;color:var(--c-ink-soft);font-size:15px;margin-bottom:14px;}
.article-body p{font-size:15.2px;color:#2b3442;}
.article-body p.callout{
  background:var(--c-bg-alt);border-left:3px solid var(--c-orange);padding:12px 16px;border-radius:6px;
  font-size:14.5px;color:var(--c-ink-soft);font-style:normal;
}
.article-figure{margin:20px 0;padding:16px;background:var(--c-bg-alt);border-radius:var(--radius-m);}
.article-figure figcaption{font-size:12.5px;color:var(--c-ink-faint);margin-top:10px;text-align:center;}
.jump-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.jump-links a{
  font-size:12.5px;background:var(--c-navy-tint);color:var(--c-navy-deep);
  padding:5px 11px;border-radius:999px;font-weight:600;
}
.jump-links a:hover{background:var(--c-navy);color:#fff;text-decoration:none;}

/* ---------- Observation articles (homepage, shorter) ---------- */
.observe-block{
  background:var(--c-cyan-tint);border:1px solid #cdeaec;border-radius:var(--radius-m);
  padding:22px 24px;margin-bottom:18px;scroll-margin-top:90px;
}
.observe-block h3{font-size:17.5px;color:var(--c-navy-deep);}
.observe-block p{font-size:14.5px;color:#274047;}
.observe-block .cat{color:var(--c-cyan);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.05em;}

/* ---------- Timeline (vertical, mobile-first) ---------- */
.timeline{position:relative;margin:22px 0 6px;padding-left:26px;}
.timeline::before{
  content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--c-border);
}
.tl-node{position:relative;padding-bottom:26px;}
.tl-node:last-child{padding-bottom:0;}
.tl-node::before{
  content:"";position:absolute;left:-26px;top:3px;width:14px;height:14px;border-radius:50%;
  background:var(--c-surface);border:3px solid var(--c-navy);
}
.tl-node.is-official::before{border-color:var(--c-official);}
.tl-node.is-rumor::before{border-color:var(--c-rumor);}
.tl-node.is-corrected::before{border-color:var(--c-corrected);}
.tl-time{font-size:12.5px;color:var(--c-ink-faint);font-weight:700;margin-bottom:4px;}
.tl-title{font-weight:700;font-size:15px;margin-bottom:4px;}
.tl-desc{font-size:13.8px;color:var(--c-ink-soft);margin-bottom:6px;}
.tl-tags{display:flex;gap:6px;flex-wrap:wrap;}

.tl-current{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  background:var(--c-bg-alt);border-radius:var(--radius-s);padding:12px 16px;margin-bottom:6px;
  font-size:13.5px;
}
.tl-current strong{color:var(--c-ink);}

/* ---------- Two-column data list (dl style) ---------- */
.deflist{display:grid;grid-template-columns:150px 1fr;gap:10px 16px;font-size:14px;}
.deflist dt{font-weight:700;color:var(--c-navy-deep);}
.deflist dd{margin:0;color:var(--c-ink-soft);}
@media (max-width:640px){.deflist{grid-template-columns:1fr;}.deflist dt{margin-top:8px;}}

/* ---------- Table (scrollable) ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--c-border-soft);border-radius:var(--radius-m);}
table.data-table{width:100%;border-collapse:collapse;min-width:560px;font-size:13.8px;}
table.data-table th,table.data-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--c-border-soft);}
table.data-table th{background:var(--c-bg-alt);font-weight:700;color:var(--c-navy-deep);white-space:nowrap;}
table.data-table tr:last-child td{border-bottom:none;}

/* ---------- Summary / rollup cards (21 articles on homepage) ---------- */
.summary-card{
  background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-m);
  padding:20px;box-shadow:var(--shadow-card);height:100%;
}
.summary-card .col-tag{
  display:inline-block;font-size:11.5px;font-weight:700;color:#fff;background:var(--c-navy);
  padding:3px 10px;border-radius:6px;margin-bottom:10px;
}
.summary-card h4{font-size:16px;margin-bottom:8px;}
.summary-card p{font-size:13.8px;color:var(--c-ink-soft);margin-bottom:10px;}
.summary-card a.readmore{font-size:13px;font-weight:700;color:var(--c-cyan);}
.rollup-group{margin-bottom:34px;}
.rollup-group-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.rollup-group-head h3{font-size:19px;margin:0;}
.rollup-group-head a{font-size:13.5px;font-weight:700;}

/* ---------- Icon feature list ---------- */
.feature-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media (max-width:900px){.feature-list{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.feature-list{grid-template-columns:1fr;}}
.feature-item{background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-m);padding:18px;}
.feature-item .num{font-size:12px;font-weight:800;color:var(--c-cyan);margin-bottom:8px;}
.feature-item h4{font-size:15.5px;margin-bottom:6px;}
.feature-item p{font-size:13.5px;color:var(--c-ink-soft);margin-bottom:0;}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--c-border-soft);}
.faq-item:first-child{border-top:1px solid var(--c-border-soft);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:16px 4px;font-size:15.5px;font-weight:700;color:var(--c-ink);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-q .plus{flex:none;width:20px;height:20px;position:relative;}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--c-navy);transition:transform .2s;}
.faq-q .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-q .plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.open .plus::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding:0 4px 16px;font-size:14.3px;color:var(--c-ink-soft);margin:0;}

/* ---------- Tabs ---------- */
.tabs-nav{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--c-border);margin-bottom:20px;}
.tab-btn{
  background:none;border:none;padding:10px 16px;font-size:14.5px;font-weight:700;color:var(--c-ink-faint);
  cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;
}
.tab-btn.active{color:var(--c-navy-deep);border-bottom-color:var(--c-orange);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}

/* ---------- About / company ---------- */
.about-box{
  background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-l);
  padding:30px;display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;
}
@media (max-width:900px){.about-box{grid-template-columns:1fr;}}

/* ---------- Footer ---------- */
footer.site-footer{background:var(--c-navy-deep);color:#c8d5e8;padding:48px 0 20px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:32px;}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h5{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.02em;}
.footer-grid ul{list-style:none;padding:0;margin:0;}
.footer-grid li{margin-bottom:9px;}
.footer-grid a{color:#a9bad4;font-size:13.5px;}
.footer-grid a:hover{color:#fff;}
.footer-brand{color:#fff;font-weight:800;font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.footer-desc{font-size:13.3px;color:#9fb0c9;max-width:38ch;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:18px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:#8a9cb8;
}
.footer-bottom a{color:#8a9cb8;}

/* ---------- Back to top ---------- */
.back-top{
  position:fixed;right:20px;bottom:20px;width:44px;height:44px;border-radius:50%;
  background:var(--c-navy);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-pop);opacity:0;pointer-events:none;transition:opacity .2s;z-index:80;border:none;cursor:pointer;
}
.back-top.show{opacity:1;pointer-events:auto;}

/* ---------- Anchor offset for in-page nav ---------- */
[id]{scroll-margin-top:88px;}

/* ---------- Misc ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}
.pill{background:var(--c-navy-tint);color:var(--c-navy-deep);font-size:12.8px;font-weight:700;padding:5px 12px;border-radius:999px;}
.muted{color:var(--c-ink-faint);font-size:13px;}
hr.rule{border:none;border-top:1px solid var(--c-border-soft);margin:26px 0;}
.stat-row{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px;}
.stat-row .stat{min-width:120px;}
.stat-row .stat b{display:block;font-size:22px;color:#fff;}
.stat-row .stat span{font-size:12.5px;color:#b9c9e0;}

.toc-box{background:var(--c-bg-alt);border-radius:var(--radius-m);padding:18px 20px;margin-bottom:30px;}
.toc-box h4{font-size:14px;margin-bottom:10px;color:var(--c-navy-deep);}
.toc-box ol{margin:0;padding-left:1.2em;font-size:13.8px;}
.toc-box li{margin-bottom:6px;}

.badge-count{
  display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;
  background:var(--c-orange);color:#fff;font-size:11px;font-weight:800;border-radius:999px;padding:0 5px;
}