*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font:17px/1.85 system-ui,-apple-system,"Noto Sans CJK SC",sans-serif}body.nature{--paper:#f8f5ed;--ink:#2b4038;--accent:#51745d;--line:#dbdfd2;--muted:#59675f}body.tech{--paper:#f3f6fa;--ink:#233247;--accent:#185e86;--line:#d4dee8;--muted:#53647a}a{color:var(--accent);text-underline-offset:5px}a:hover{text-decoration:underline}a:focus-visible{outline:3px solid #b67b29;outline-offset:5px}img{display:block;width:100%;height:auto}header{max-width:1160px;margin:auto;padding:25px 30px;display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid var(--line)}.brand{font-size:23px;font-weight:750;text-decoration:none;color:var(--ink)}nav{display:flex;gap:22px;font-size:15px}nav a{text-decoration:none}main{max-width:1160px;margin:auto;padding:45px 30px 70px}.eyebrow,.meta{font-size:13px;letter-spacing:.08em;color:var(--muted)}h1,h2,h3{line-height:1.4;letter-spacing:-.025em}h1{font-size:clamp(32px,4.5vw,58px);margin:14px 0 24px}h2{font-size:27px}h3{font-size:22px}.nature h1,.nature h2,.nature h3{font-family:Georgia,"Noto Serif CJK SC",serif}.lead{font-size:20px;max-width:650px;color:var(--muted)}hero{display:block}.hero{display:grid;grid-template-columns:1fr 1.1fr;align-items:center;gap:40px;margin-bottom:60px}.hero img{border-radius:50% 50% 8px 8px}.section-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);margin-bottom:28px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}.card img{border-radius:6px}.card h3{margin:12px 0}.card h3 a{color:var(--ink);text-decoration:none}.card p{color:var(--muted);margin:12px 0}.card .meta{margin-top:16px}.tech header{max-width:none;padding-left:max(30px,calc((100vw - 1100px)/2));padding-right:max(30px,calc((100vw - 1100px)/2));background:#152b42;color:white;border:0}.tech header a{color:white}.tech-intro{background:#152b42;color:#fff;padding:38px 42px;margin-bottom:42px;border-left:6px solid #60c1ce}.tech-intro .lead,.tech-intro .eyebrow{color:#bbd7e7}.catalog{display:grid;grid-template-columns:210px 1fr;gap:45px}.sidebar{border-right:1px solid var(--line);padding-right:22px}.sidebar p{font-size:15px;color:var(--muted)}.paper-row{display:grid;grid-template-columns:1fr 210px;gap:26px;padding:26px 0;border-bottom:1px solid var(--line)}.paper-row:first-child{padding-top:0}.paper-row h2{font-size:24px;margin:8px 0}.paper-row h2 a{text-decoration:none;color:var(--ink)}.paper-row p{font-size:16px;color:var(--muted)}.paper-row img{align-self:center;border:1px solid var(--line)}.note{border-left:3px solid var(--accent);padding:15px 22px;margin-top:45px;background:#ffffff80;color:var(--muted)}.article{max-width:850px}.article h1{font-size:clamp(30px,4vw,44px)}.article p{line-height:2}.article figure{margin:30px 0}.article figcaption{font-size:13px;color:var(--muted);margin-top:12px}.article section{margin:36px 0}.article h2{font-size:25px}.toc{background:#ffffff90;border:1px solid var(--line);padding:18px 25px}.toc a{display:block;font-size:15px}.sources{font-size:15px;border-top:1px solid var(--line);padding-top:20px;overflow-wrap:anywhere}.related{border-top:1px solid var(--line);padding-top:20px;margin-top:40px}footer{max-width:1100px;margin:auto;border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:14px;display:flex;justify-content:space-between;gap:18px}.skip{position:absolute;top:-80px;left:20px;background:white;padding:10px;z-index:2}.skip:focus{top:10px}@media(max-width:760px){header{padding:20px;align-items:flex-start;flex-direction:column;gap:10px}nav{gap:20px}main{padding:28px 20px 45px}.hero,.grid,.catalog{grid-template-columns:1fr;gap:28px}.hero{margin-bottom:35px}.hero img{max-height:280px;object-fit:cover}.tech-intro{padding:25px}.sidebar{border-right:0;border-bottom:1px solid var(--line);padding:0 0 15px}.paper-row{grid-template-columns:1fr}.paper-row img{max-width:400px}.section-head{display:block}footer{margin:0 20px;flex-direction:column}.article h2{font-size:23px}}