:root{--bg:#f6f7f4;--card:#ffffff;--text:#1f2d29;--muted:#66736e;--brand:#305347;--line:#dfe6e1;--soft:#e8f0eb;--gold:#d59c49}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92vw);margin:auto}.topbar{background:var(--brand);color:#fff;font-size:14px}.topbar .container{display:flex;justify-content:space-between;padding:8px 0}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header-row{display:flex;align-items:center;justify-content:space-between;padding:18px 0}.logo{display:flex;align-items:center;gap:12px;font-weight:900;font-size:26px}.logo-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#80a091);display:grid;place-items:center;color:#fff}.nav{display:flex;gap:18px;flex-wrap:wrap}.nav a{font-weight:700;color:#34534a}.search-wrap{background:#fff;border-bottom:1px solid var(--line);padding:13px 0}.search-box{display:flex;gap:10px}.search-box input{flex:1;border:1px solid var(--line);border-radius:999px;padding:13px 18px;font-size:16px}.btn{border:0;background:var(--brand);color:#fff;border-radius:999px;padding:12px 22px;font-weight:800;cursor:pointer}.hero{padding:34px 0}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 30px rgba(35,55,47,.08);overflow:hidden}.card-pad{padding:24px}.eyebrow{color:var(--gold);font-weight:900;letter-spacing:.08em}.h1{font-size:42px;line-height:1.2;margin:10px 0 14px}.lead{font-size:18px;color:var(--muted)}.meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:14px}.section{padding:22px 0}.section-title{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:16px}.section-title h2{margin:0;font-size:28px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.video-card{position:relative}.video-thumb{position:relative;overflow:hidden}.play{position:absolute;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.0);transition:.2s}.play span{opacity:0;transform:scale(.8);transition:.2s;width:68px;height:68px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;color:var(--brand);font-size:32px}.video-card:hover .play{background:rgba(0,0,0,.22)}.video-card:hover .play span{opacity:1;transform:scale(1)}.tag{display:inline-block;background:var(--soft);color:var(--brand);border-radius:999px;padding:4px 10px;font-size:13px;margin:2px}.stats{display:flex;gap:10px;color:var(--muted);font-size:13px;flex-wrap:wrap}.list{display:grid;gap:12px}.list-item{padding:15px;border:1px solid var(--line);border-radius:18px;background:#fff}.author{display:flex;gap:14px;align-items:flex-start}.avatar{width:54px;height:54px;border-radius:18px;background:var(--soft);display:grid;place-items:center;font-weight:900;color:var(--brand)}.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px}.faq summary{font-weight:900;cursor:pointer}.comment{border-left:4px solid var(--brand);padding-left:14px}.footer{margin-top:32px;background:#20352f;color:#d9e5df;padding:34px 0}.footer a{color:#fff}.breadcrumb{font-size:14px;color:var(--muted);margin:18px 0}.notice{padding:10px 14px;background:#fff7e8;border:1px solid #f0d49a;border-radius:16px;color:#684c18}.domain-pill{font-weight:900;color:var(--brand)}.json-block{white-space:pre-wrap;background:#14231f;color:#e6fff3;padding:18px;border-radius:18px;overflow:auto;font-size:13px}.figure-caption{font-size:13px;color:var(--muted);padding:8px 0}.article-body h2{margin-top:28px}.article-body p{font-size:17px}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}.table th,.table td{border:1px solid var(--line);padding:12px;text-align:left}.mobile-menu{display:none}@media (max-width:860px){.hero-grid,.grid,.grid-2{grid-template-columns:1fr}.h1{font-size:30px}.header-row{align-items:flex-start;gap:12px;flex-direction:column}.nav{gap:10px}.topbar .container{display:block}.search-box{flex-direction:column}.btn{width:100%}}