:root{
    --red:#E11D2A; --red-d:#B3121D; --blue:#1E5BFF; --blue-d:#1340C7;
    --bg:#F6F7F9; --card:#FFFFFF; --text:#1A1F29; --muted:#6B7280;
    --border:#E6E8EC; --shadow:0 2px 12px rgba(20,30,50,.06);
    --shadow-h:0 12px 30px rgba(225,29,42,.14);
    --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.center{text-align:center}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--red)}
.brand-mark{font-size:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text small{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.5px}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:9px 14px;border-radius:8px;font-size:15px;color:var(--text);transition:.2s}
.nav-links a:hover,.nav-links a.active{background:var(--red);color:#fff}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;font-size:20px;padding:6px 10px;cursor:pointer}
.site-main{min-height:60vh}

/* Hero */
.hero{background:linear-gradient(135deg,#10131A 0%,#1E5BFF 55%,#E11D2A 130%);color:#fff;padding:80px 0 70px}
.hero-eyebrow{letter-spacing:3px;font-size:13px;opacity:.85;margin-bottom:14px}
.hero-title{font-size:46px;line-height:1.2;font-weight:800;margin-bottom:18px}
.hero-sub{max-width:680px;font-size:17px;opacity:.92;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:46px;flex-wrap:wrap}
.hero-stats li{list-style:none}
.hero-stats strong{display:block;font-size:30px;font-weight:800}
.hero-stats span{font-size:14px;opacity:.85}

/* Buttons */
.btn{display:inline-block;padding:12px 26px;border-radius:10px;font-weight:600;font-size:15px;transition:.2s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-d);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

/* Sections */
.section{padding:64px 0}
.section-alt{background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-title{font-size:30px;font-weight:800;margin-bottom:8px}
.section-lead{color:var(--muted);margin-bottom:30px;font-size:16px}
.section-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px;flex-wrap:wrap;gap:10px}
.link-more{color:var(--red);font-weight:600}

/* Business cards */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.biz-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.25s;overflow:hidden}
.biz-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:var(--red)}
.biz-card.core{background:linear-gradient(160deg,#fff, #FFF3F3)}
.biz-card h3{font-size:22px;margin:10px 0 8px}
.biz-card p{color:var(--muted);min-height:44px}
.card-more{display:inline-block;margin-top:12px;color:var(--red);font-weight:600}
.badge{position:absolute;top:16px;right:16px;background:var(--red);color:#fff;font-size:12px;padding:4px 10px;border-radius:20px}
.badge-coop{background:var(--blue)}

/* Features */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.feature-ico{font-size:30px;margin-bottom:10px}
.feature h3{font-size:18px;margin-bottom:6px}
.feature p{color:var(--muted);font-size:14px}

/* Articles */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:var(--red)}
.article-thumb{height:170px;background-size:cover;background-position:center;background-color:#eef1f6}
.article-body{padding:18px}
.tag{display:inline-block;font-size:12px;color:var(--red);background:#FDECEC;padding:3px 10px;border-radius:20px;margin-bottom:8px}
.article-body h3{font-size:17px;line-height:1.4;margin-bottom:6px}
.article-date{display:block;margin-top:10px;font-size:12px;color:var(--muted)}

/* CTA */
.cta{background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;padding:50px 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{font-size:26px;margin-bottom:6px}
.cta-actions{display:flex;gap:12px}
.cta .btn-ghost{border-color:#fff}

/* Breadcrumb & page */
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--red)}
.breadcrumb span{margin:0 8px}
.page-title{font-size:34px;font-weight:800;margin-bottom:22px}
.narrow{max-width:860px}
.cat-header{margin-bottom:28px}
.cat-header h1{font-size:30px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cat-desc{color:var(--muted);margin-top:10px;font-size:16px}

/* Prose */
.prose p{margin-bottom:16px}
.prose h2{font-size:23px;margin:28px 0 12px}
.prose ul{margin:0 0 16px 22px}
.prose li{margin-bottom:8px}
.about-list li{margin-bottom:12px}
.info-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
.info-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.info-card h3{color:var(--red);margin-bottom:8px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:30px}
.contact-info h3{margin-bottom:14px}
.contact-info p{margin-bottom:8px}
.contact-form{display:flex;flex-direction:column;gap:14px}
.contact-form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600}
.contact-form input,.contact-form textarea{font:inherit;padding:11px 13px;border:1px solid var(--border);border-radius:9px;background:#fff}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--red)}
.alert{padding:12px 16px;border-radius:9px;margin-bottom:6px}
.alert-ok{background:#E7F8EE;color:#0B7A3B;border:1px solid #B7E8C8}
.alert-err{background:#FDECEC;color:var(--red-d);border:1px solid #F5C2C2}

/* Article detail */
.article-detail-head{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.article-detail-head h1{font-size:32px;line-height:1.3;margin:10px 0}
.article-meta{display:flex;gap:20px;color:var(--muted);font-size:14px;flex-wrap:wrap}
.article-content{font-size:16.5px;line-height:1.9}
.article-content h2{font-size:24px;margin:30px 0 14px}
.article-content h3{font-size:20px;margin:22px 0 10px}
.article-content p{margin-bottom:16px}
.article-content ul,.article-content ol{margin:0 0 16px 24px}
.article-content li{margin-bottom:8px}
.related{margin-top:36px;border-top:1px solid var(--border);padding-top:24px}
.related h2{font-size:20px;margin-bottom:14px}
.related-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.related-list a{display:block;padding:12px 14px;background:var(--card);border:1px solid var(--border);border-radius:10px;transition:.2s}
.related-list a:hover{border-color:var(--red);color:var(--red)}
.article-cta{margin-top:30px;background:#FFF3F3;border:1px solid #FBD5D5;border-radius:12px;padding:18px 20px}

/* Pagination */
.pagination{display:flex;gap:8px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.pagination a,.pagination span{padding:9px 14px;border:1px solid var(--border);border-radius:8px;background:var(--card)}
.pagination a:hover{background:var(--red);color:#fff;border-color:var(--red)}
.pagination .active{background:var(--red);color:#fff;border-color:var(--red)}

/* Footer */
.site-footer{background:#10131A;color:#cfd4dc;padding:50px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
.footer-col h3{color:#fff;font-size:18px;margin-bottom:12px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:12px}
.footer-col p{margin-bottom:8px;font-size:14px}
.footer-links{list-style:none}
.footer-links a{color:#cfd4dc;font-size:14px;line-height:2}
.footer-links a:hover{color:var(--red)}
.footer-bottom{border-top:1px solid #222;margin-top:30px;padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:13px}

/* Responsive */
@media (max-width:900px){
    .feature-grid{grid-template-columns:repeat(2,1fr)}
    .article-grid{grid-template-columns:repeat(2,1fr)}
    .info-cards{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
    .nav-toggle{display:block}
    .nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;padding:14px;border-bottom:1px solid var(--border)}
    .nav-links.open{display:flex}
    .nav-links a{width:100%}
    .hero-title{font-size:32px}
    .hero-stats{gap:24px}
    .card-grid,.article-grid,.feature-grid,.related-list{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
}