:root{--ink:#0f172a;--muted:#64748b;--teal:#0f766e;--teal2:#14b8a6;--navy:#083344;--line:#e2e8f0;--bg:#f8fafc;--white:#fff;--science:#4f46e5}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 32px));margin:auto}.topbar{background:var(--navy);color:#dff7f3;font-size:13px}.topbar-inner{height:34px;display:flex;justify-content:space-between;align-items:center}.site-header{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);z-index:30;border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:82px;gap:24px}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:56px;height:56px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(135deg,var(--navy),var(--teal2));color:white;font-weight:800;letter-spacing:-1px}.brand strong{display:block;font-size:17px;line-height:1.15}.brand small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.main-nav{display:flex;align-items:center;gap:22px;font-weight:650;font-size:14px}.main-nav a:hover{color:var(--teal)}.search-link{padding:9px 15px;background:var(--bg);border-radius:999px}.menu-toggle{display:none;border:0;background:var(--bg);font-size:23px;border-radius:10px;padding:8px 11px}.category-strip{border-top:1px solid var(--line);background:#fff}.category-scroll{display:flex;gap:22px;overflow:auto;padding:10px 0;font-size:13px;font-weight:650;white-space:nowrap}.hero{padding:30px 0 12px;background:linear-gradient(#fff,#f0fdfa)}.hero-card{height:560px;border-radius:26px;overflow:hidden;position:relative;box-shadow:0 25px 60px rgba(8,51,68,.16)}.hero-card>img{width:100%;height:100%;object-fit:cover}.hero-card:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 18%,rgba(2,6,23,.86) 100%)}.hero-overlay{position:absolute;left:0;right:0;bottom:0;z-index:2;color:#fff;padding:42px;max-width:850px}.hero-overlay h1{font-size:clamp(34px,5vw,62px);line-height:1.05;margin:15px 0}.hero-overlay p{font-size:18px;color:#e2e8f0}.empty-hero{padding:75px;border-radius:26px;background:linear-gradient(135deg,var(--navy),var(--teal));color:white}.empty-hero h1{font-size:46px;margin:12px 0}.empty-hero p{font-size:18px;max-width:700px}.section{padding:64px 0}.section.alt{background:var(--bg)}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:26px}.section h2,.page-head h1{font-size:36px;line-height:1.15;margin:6px 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p{color:var(--muted);font-size:14px}.meta{font-size:12px;color:#94a3b8}.two-col{display:grid;grid-template-columns:1.3fr .7fr;gap:50px}.rank-list a{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}.rank-list>a>span{font-size:34px;color:#cbd5e1;font-weight:800}.rank-list strong{display:block}.rank-list small{display:block;color:var(--muted);margin-top:5px}.newsletter{padding:32px;border-radius:22px;background:linear-gradient(135deg,var(--navy),#134e4a);color:white}.newsletter input,.search-form input{width:100%;border:1px solid var(--line);padding:14px 16px;border-radius:12px;font:inherit}.newsletter form{display:grid;gap:12px}.btn{display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:12px;padding:13px 18px;background:var(--teal2);color:#042f2e;font-weight:800;cursor:pointer}.page-head{padding:60px 0;background:linear-gradient(135deg,#ecfeff,#f8fafc)}.page-head p{max-width:760px;color:var(--muted);font-size:18px}.search-form{display:flex;gap:10px;max-width:700px;margin-top:25px}.list-cards{display:grid;gap:18px}.list-cards>a{display:grid;grid-template-columns:220px 1fr;gap:22px;padding:18px;border:1px solid var(--line);border-radius:18px}.list-cards img{width:220px;height:140px;object-fit:cover;border-radius:12px}.article-page{padding:46px 0}.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:46px}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}.article-main h1{font-size:clamp(36px,5vw,62px);line-height:1.08;margin:14px 0}.lead{font-size:20px;color:var(--muted)}.article-byline{display:flex;gap:12px;align-items:center;margin:24px 0}.article-byline small{display:block;color:var(--muted)}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#ccfbf1;color:var(--teal);font-weight:900}.article-cover{width:100%;max-height:600px;object-fit:cover;border-radius:24px;margin:24px 0 35px}.article-content{font-size:18px}.article-content h2{font-size:30px;margin-top:40px}.article-content h3{font-size:23px;margin-top:30px}.article-content p{margin:0 0 1.35em}.article-content blockquote{border-left:4px solid var(--teal2);margin:28px 0;padding:18px 24px;background:#f0fdfa}.abstract-box,.references,.side-card,.share-box{border:1px solid var(--line);border-radius:18px;padding:22px;margin:25px 0;background:#fff}.article-side{position:relative}.side-card{position:sticky;top:140px}.share-box{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.prose{max-width:820px}.site-footer{background:#081c24;color:#cbd5e1;padding-top:55px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:45px}.footer-grid h4{color:white}.footer-grid a{display:block;margin:9px 0}.footer-brand .brand-mark{width:48px;height:48px}.footer-brand strong{color:white}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:20px 0;font-size:13px}
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@media(max-width:640px){.topbar{display:none}.header-inner{min-height:72px}.brand strong{font-size:14px}.brand small{display:none}.brand-mark{width:46px;height:46px}.main-nav{top:72px}.hero{padding-top:16px}.hero-card{height:460px;border-radius:18px}.hero-overlay{padding:24px}.hero-overlay h1{font-size:35px}.hero-overlay p{font-size:15px}.empty-hero{padding:35px 24px}.empty-hero h1{font-size:34px}.card-grid{grid-template-columns:1fr}.section{padding:44px 0}.section h2,.page-head h1{font-size:30px}.list-cards>a{grid-template-columns:1fr}.list-cards img{width:100%;height:190px}.search-form{flex-direction:column}.article-main h1{font-size:38px}.article-content{font-size:17px}.footer-grid{grid-template-columns:1fr}}