:root{
  --primary:#1976D2;--secondary:#43A047;--bg:#FFFFFF;--card:#F5F7FA;
  --accent:#E91E63;--text:#37474F;--muted:#78909C;--border:#E3E8EE;
  --radius:8px;--shadow:0 2px 8px rgba(0,0,0,.04);--shadow-lg:0 8px 32px rgba(25,118,210,.12);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:"Helvetica Neue","PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;font-size:16px}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--border);z-index:50;box-shadow:var(--shadow)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;flex-wrap:wrap;gap:12px}
.brand{font-size:22px;font-weight:800;color:var(--primary);display:flex;align-items:baseline;gap:8px}
.brand-sub{font-size:12px;color:var(--accent);font-weight:600;padding:2px 8px;background:#fce4ec;border-radius:4px}
.main-nav{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.main-nav a{color:var(--text);font-weight:600;font-size:14px;padding:6px 4px;border-bottom:2px solid transparent;transition:.2s}
.main-nav a:hover{color:var(--primary);border-color:var(--primary)}
.nav-cta{background:var(--primary);color:#fff !important;padding:8px 16px !important;border-radius:var(--radius);border:none !important}
.nav-cta:hover{background:var(--accent);color:#fff !important}

/* Breadcrumb */
.breadcrumb{background:var(--card);padding:10px 0;font-size:13px;color:var(--muted)}
.breadcrumb .sep{margin:0 6px;color:var(--muted)}

/* Hero */
.hero{padding:60px 0 40px;background:linear-gradient(135deg,#fff 0%,#F5F7FA 100%);border-bottom:1px solid var(--border)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:44px;font-weight:900;color:var(--primary);margin:0 0 12px;letter-spacing:-.5px}
.hero .lead{font-size:18px;color:var(--accent);font-weight:600;margin:0 0 16px}
.hero-desc{font-size:15px;color:var(--text);margin:0 0 24px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.btn{display:inline-block;padding:12px 22px;border-radius:var(--radius);font-weight:700;font-size:14px;border:2px solid transparent;cursor:pointer;transition:.2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;border-top:1px solid var(--border);padding-top:24px}
.stat{display:flex;flex-direction:column;align-items:flex-start}
.stat .num{font-size:28px;font-weight:800;color:var(--primary);font-family:"SF Mono",Consolas,monospace}
.stat .unit{font-size:12px;color:var(--accent);font-weight:600}
.stat label{font-size:12px;color:var(--muted);margin-top:4px}

.hero-visual{position:relative}
.hero-chart{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;height:120px;margin-top:16px;align-items:end}
.hero-chart .bar{background:linear-gradient(180deg,var(--primary),var(--secondary));border-radius:4px 4px 0 0;height:var(--h);animation:grow 1.2s ease-out;transform-origin:bottom}
@keyframes grow{from{transform:scaleY(0)}to{transform:scaleY(1)}}

/* Sections */
.section{padding:64px 0}
.section.bg-soft{background:var(--card)}
.sec-title{font-size:30px;font-weight:800;color:var(--primary);margin:0 0 8px;position:relative;padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:5px;background:var(--accent);border-radius:3px}
.sec-sub{color:var(--muted);margin:0 0 32px;font-size:15px}

/* Grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;display:block;color:var(--text)}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);color:var(--text)}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card h3{margin:14px 16px 6px;font-size:17px;color:var(--primary)}
.card p{margin:0 16px 8px;font-size:14px;color:var(--text)}
.card .meta,.card span.meta{display:block;margin:0 16px 14px;font-size:12px;color:var(--muted)}

/* Story feature */
.story-feature{display:grid;grid-template-columns:1fr 1fr;gap:32px;background:var(--card);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.story-feature img{border-radius:var(--radius)}
.tag{display:inline-block;background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:4px;margin-bottom:12px}
.story-meta h3{font-size:24px;margin:0 0 12px;color:var(--primary)}
.hl-list{list-style:none;padding:0;margin:16px 0;display:grid;gap:8px}
.hl-list li{padding:10px 14px;background:var(--bg);border-left:4px solid var(--secondary);border-radius:4px;font-size:14px}
.hl-list li strong{color:var(--accent);font-weight:800;margin-right:8px;font-family:"SF Mono",monospace}

/* Two-col */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.two-col.reverse>div:first-child{order:2}
.rep-list{list-style:none;padding:0;margin:20px 0}
.rep-list li{margin-bottom:8px}
.rep-list a{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--card);border-radius:var(--radius);transition:.2s}
.rep-list a:hover{background:#e3f2fd}
.rep-list a strong{color:var(--primary)}
.rep-list a span{font-size:12px;color:var(--muted);font-family:monospace}

/* KPI */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kpi{background:var(--bg);padding:24px;border-radius:var(--radius);border-top:4px solid var(--primary);box-shadow:var(--shadow);text-align:left}
.kpi:nth-child(2){border-color:var(--secondary)}
.kpi:nth-child(3){border-color:var(--accent)}
.kpi:nth-child(4){border-color:#FFA000}
.kpi-num{font-size:36px;font-weight:900;color:var(--primary);font-family:"SF Mono",monospace;display:inline-block}
.kpi span{font-size:14px;color:var(--accent);margin-left:6px;font-weight:600}
.kpi label{display:block;margin:6px 0;color:var(--text);font-weight:600}
.kpi cite{display:block;font-size:11px;color:var(--muted);font-style:normal}

/* Sources */
.src-row{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:24px 0}
.src{padding:18px 12px;background:var(--bg);border:1px dashed var(--border);border-radius:var(--radius);text-align:center;font-size:13px;color:var(--text);font-weight:600}
.muted{color:var(--muted);font-size:13px}

/* Team */
.full-img{width:100%;border-radius:var(--radius);margin:20px 0 32px}
.bio{padding:20px;background:var(--card);border-radius:var(--radius)}
.bio h3{margin:0 0 8px;color:var(--primary);font-size:18px}
.bio p{margin:0;font-size:14px}

/* App CTA */
.app-cta{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center}
.app-cta h2{font-size:28px;color:var(--primary);margin:0 0 12px}
.app-mock{display:flex;justify-content:center}
.phone{width:180px;height:340px;background:linear-gradient(180deg,var(--primary),#0d47a1);border-radius:28px;padding:14px;box-shadow:var(--shadow-lg);position:relative}
.phone::before{content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);width:48px;height:6px;background:#000;border-radius:4px}
.screen{background:#fff;height:100%;border-radius:16px;padding:24px 16px;display:flex;flex-direction:column;justify-content:flex-end;gap:8px}
.mini-bar{height:24px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:4px;animation:grow 1.5s ease}
.mini-bar:nth-child(2){width:80%;background:linear-gradient(90deg,var(--accent),#ff6e9c)}
.mini-bar:nth-child(3){width:60%;background:linear-gradient(90deg,var(--secondary),#81c784)}

/* FAQ */
.faq{display:grid;gap:10px;max-width:880px}
.faq details{background:var(--card);border-radius:var(--radius);padding:14px 18px;border-left:4px solid var(--primary)}
.faq summary{cursor:pointer;font-weight:700;color:var(--primary);font-size:15px}
.faq p{margin:10px 0 0;font-size:14px}

/* Related list */
.rel-list{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:12px}
.rel-list li a{display:inline-block;padding:8px 16px;background:var(--bg);border:1px solid var(--border);border-radius:20px;font-size:13px}

/* Article */
.article{max-width:880px;margin:0 auto}
.article h1{font-size:34px;color:var(--primary)}
.article h2{font-size:22px;color:var(--primary);margin-top:32px;border-left:4px solid var(--accent);padding-left:12px}
.article .lead{font-size:17px;color:var(--text);background:var(--card);padding:16px;border-radius:var(--radius)}

/* Footer */
.site-footer{background:#263238;color:#cfd8dc;padding:48px 0 20px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.foot-col h4{color:#fff;margin:0 0 12px;font-size:15px;border-bottom:2px solid var(--primary);padding-bottom:6px;display:inline-block}
.foot-col p{font-size:13px;color:#b0bec5;margin:0}
.foot-col ul{list-style:none;padding:0;margin:0}
.foot-col li{margin:6px 0;font-size:13px}
.foot-col a{color:#cfd8dc}
.foot-col a:hover{color:var(--accent)}
.foot-bot{border-top:1px solid #37474F;margin-top:32px;padding-top:16px;text-align:center;font-size:12px;color:#90a4ae}

/* Search & Contact */
.search-form{display:flex;gap:10px;margin:20px 0}
.search-form input{flex:1;padding:14px 18px;border:2px solid var(--border);border-radius:var(--radius);font-size:16px}
.search-form input:focus{outline:none;border-color:var(--primary)}
.search-results{margin-top:24px}
.search-results .hit{padding:16px;background:var(--card);border-radius:var(--radius);margin-bottom:10px}
.search-results .hit h3{margin:0 0 4px;font-size:16px}
.search-results .hit p{margin:0;font-size:13px;color:var(--muted)}

.contact-form{display:grid;gap:16px;max-width:600px;margin:24px 0}
.contact-form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:14px}
.contact-form input,.contact-form select,.contact-form textarea{padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--primary)}
.center{text-align:center}
.center h1{font-size:48px;color:var(--accent)}

/* Responsive */
@media(max-width:768px){
  .hero{padding:40px 0}
  .hero-grid,.story-feature,.two-col,.app-cta{grid-template-columns:1fr;gap:24px}
  .two-col.reverse>div:first-child{order:0}
  .hero h1{font-size:32px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .grid-3,.kpi-grid{grid-template-columns:1fr}
  .src-row{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .main-nav{font-size:13px;gap:10px}
  .sec-title{font-size:22px}
  .section{padding:40px 0}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:26px}
}