:root{--text:#172033;--muted:#637083;--line:#e5e9f1;--bg:#f7f9fc;--card:#fff;--brand:#111827;--accent:#f59e0b}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block;border-radius:18px}.topbar{background:#111827;color:#fff;text-align:center;padding:8px 12px;font-size:14px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header-inner{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:18px 20px;gap:20px}.logo{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:800}.logo-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:#111827;color:#fff}.main-nav{display:flex;gap:18px;flex-wrap:wrap;font-weight:700}.main-nav a:hover{color:#b45309}.search-wrap{max-width:1180px;margin:0 auto 16px;padding:0 20px;display:flex;gap:10px;align-items:center}.search-wrap input{flex:1;padding:13px 16px;border:1px solid var(--line);border-radius:12px}.search-wrap button,.btn,.contact-form button{border:0;background:#111827;color:#fff;padding:12px 18px;border-radius:12px;font-weight:700;cursor:pointer}.search-wrap small{color:var(--muted)}main{max-width:1180px;margin:auto;padding:28px 20px}.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}.hero,.section,.page-title,.article{background:#fff;border:1px solid var(--line);border-radius:26px;padding:28px;margin-bottom:24px;box-shadow:0 10px 30px rgba(15,23,42,.04)}.eyebrow{color:#b45309;font-weight:800}.hero h1,.page-title h1,.article h1{font-size:clamp(30px,5vw,54px);line-height:1.15;margin:10px 0}.hero-actions{display:flex;gap:12px;margin:22px 0}.btn.secondary{background:#f3f4f6;color:#111827}.meta-list{display:flex;gap:14px;flex-wrap:wrap;padding:0;margin:0;list-style:none;color:var(--muted);font-size:14px}.video-card{position:relative;overflow:hidden}.play-button{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.85);width:70px;height:70px;border-radius:50%;border:0;background:rgba(17,24,39,.82);color:#fff;font-size:30px;opacity:0;transition:.2s;cursor:pointer}.video-card:hover .play-button{opacity:1;transform:translate(-50%,-50%) scale(1)}figcaption{font-size:13px;color:var(--muted);padding-top:8px}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}.section-head h2,.section h2{margin:0}.headline-card{display:grid;grid-template-columns:320px 1fr;gap:22px;align-items:center}.stats,.article-meta{color:var(--muted);font-size:14px}.grid-section{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-section .full{grid-column:1/-1}.card,.topic-grid article,.author-grid article,.comment-grid blockquote{background:#f8fafc;border:1px solid var(--line);border-radius:20px;padding:18px;margin:0}.card h3,.card h2{margin:14px 0 6px}.columns{display:grid;grid-template-columns:1.3fr .7fr;gap:24px}.news-list{list-style:none;padding:0;margin:0}.news-list li{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding:12px 0}.tags{display:flex;gap:10px;flex-wrap:wrap}.tags a{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:999px;padding:6px 12px}.topic-grid,.author-grid,.comment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.author-grid img{aspect-ratio:1.5/1;object-fit:cover}.comments .comment-grid{grid-template-columns:repeat(2,1fr)}.comment-grid cite{display:block;margin-top:10px;color:var(--muted)}details{border-top:1px solid var(--line);padding:14px 0}summary{cursor:pointer;font-weight:800}.breadcrumb{color:var(--muted);font-size:14px;margin-bottom:10px}.article{max-width:880px}.article p{font-size:18px}.contact-form{display:grid;gap:14px;max-width:680px}.contact-form label{display:grid;gap:6px;font-weight:700}.contact-form input,.contact-form textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px}.contact-form textarea{min-height:130px}.site-footer{background:#111827;color:#d1d5db;margin-top:30px}.footer-grid{max-width:1180px;margin:auto;padding:36px 20px;display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:24px}.footer-grid a{display:block;margin:8px 0;color:#fff}.footer-logo{color:#fff}.footer-logo .logo-mark{background:#fff;color:#111827}@media(max-width:840px){.header-inner,.hero,.headline-card,.columns,.footer-grid{grid-template-columns:1fr;display:grid}.main-nav{gap:10px}.search-wrap{display:grid}.grid-section,.topic-grid,.author-grid,.comments .comment-grid{grid-template-columns:1fr}.headline-card{grid-template-columns:1fr}.hero-actions{flex-direction:column}.section,.hero,.page-title,.article{padding:20px}}