:root{--ink:#17251f;--muted:#617066;--line:#dce1d7;--paper:#f7f8f2;--accent:#dcf581;--serif:Georgia, "Times New Roman", serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{background:var(--paper);color:var(--ink);margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,Segoe UI,Arial,PingFang SC,sans-serif}body.dev{--accent:#cbdcff;--paper:#f5f7fa;--ink:#192739;--line:#d9e0e9;--muted:#647181}a{color:inherit;text-decoration:none}a:hover{color:#45671a}button,input{font:inherit}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible{outline-offset:5px;outline:3px solid #547ad1}.skip{background:var(--accent);z-index:20;padding:10px;position:absolute;top:-100px;left:20px}.skip:focus{top:10px}.header{border-bottom:1px solid var(--line);align-items:center;gap:35px;max-width:1440px;min-height:98px;margin:auto;padding:24px 4.5%;display:flex}.brand{letter-spacing:-1px;white-space:nowrap;align-items:center;gap:10px;font-size:23px;font-weight:750;display:flex}.brand small{letter-spacing:1.5px;max-width:50px;margin-left:2px;font-size:9px;line-height:1.5}.brandmark{background:var(--ink);border-radius:50%;width:20px;height:20px;display:inline-block}.header nav{gap:25px;margin-left:auto;font-size:14px;font-weight:550;display:flex}.header nav [aria-current]{text-underline-offset:6px;text-decoration:underline}.header-tools{white-space:nowrap;gap:20px;margin-left:15px;font-size:13px;display:flex}.search-link{border-left:1px solid var(--line);padding-left:25px}main{max-width:1310px;margin:auto;padding:0 32px}.hero{grid-template-columns:1.2fr 1fr;align-items:center;gap:55px;padding:76px 0 25px;display:grid}.eyebrow{letter-spacing:1.6px;text-transform:uppercase;font-size:11px;font-weight:700}.hero h1{letter-spacing:-4px;max-width:700px;margin:25px 0 27px;font-size:clamp(42px,5.8vw,78px);font-weight:500;line-height:1.04}.hero p{color:var(--muted);max-width:560px;font-size:19px;line-height:1.65}.actions{align-items:center;gap:28px;margin-top:32px;display:flex}.button{background:var(--ink);color:#fff;border-radius:5px;justify-content:space-between;gap:34px;padding:14px 22px;font-size:14px;font-weight:600;display:inline-flex}.button:hover{color:#fff;background:#3a5730}.text-link{border-bottom:1px solid var(--ink);font-size:14px;font-weight:600}.hero-art{background:var(--accent);border-radius:7px;justify-content:center;align-items:center;min-height:395px;display:flex;position:relative;overflow:hidden}.dot-art{z-index:2;filter:drop-shadow(14px 22px 1px #17251f20);width:180px;height:180px;transform:rotate(-17deg)}.orbit{border:1px solid #17251f30;border-radius:50%;width:305px;height:305px;position:absolute;transform:rotate(-25deg)scaleX(1.65)}.orbit-two{transform:rotate(65deg)scaleX(1.65)}.art-label{letter-spacing:1.5px;font-size:10px;font-weight:700;position:absolute;top:25px;left:26px}.art-bottom{letter-spacing:1.5px;justify-content:space-between;font-size:10px;display:flex;position:absolute;bottom:24px;left:26px;right:26px}.source-caption{text-align:right;color:var(--muted);margin-bottom:36px;font-size:10px}.source-caption a{text-decoration:underline}.quick-strip{border-block:1px solid var(--line);grid-template-columns:.8fr repeat(3,1fr);align-items:center;gap:25px;padding:22px 0;display:grid}.quick-strip a{justify-content:space-between;gap:8px;font-size:13px;font-weight:600;display:flex}.collection{padding:57px 0 10px}.section-heading{justify-content:space-between;align-items:end;margin-bottom:24px;display:flex}.section-heading h2{letter-spacing:-1px;margin:4px 0 0;font-size:33px;font-weight:500}.section-count{letter-spacing:1.4px;color:var(--muted);font-size:10px}.cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:17px;display:grid}.card{border:1px solid var(--line);background:#ffffff70;border-radius:5px;padding:26px 27px 44px;transition:background .15s,border-color .15s;display:block;position:relative}.card:hover{color:var(--ink);background:#fff;border-color:#95a98c}.card .eyebrow{color:var(--muted);font-size:9px}.card h3{letter-spacing:-.6px;margin:18px 0 12px;font-size:21px;font-weight:550;line-height:1.3}.card p{color:var(--muted);margin:0;font-size:14px;line-height:1.55}.arrow{font-size:19px;position:absolute;bottom:16px;right:22px}.collection:last-child{padding-bottom:80px}footer{border-top:1px solid var(--line);justify-content:space-between;align-items:start;gap:35px;max-width:1310px;margin:0 auto;padding:38px 32px;display:flex}footer p{color:var(--muted);margin:9px 0;font-size:14px}.small{color:var(--muted);font-size:11px}.footer-links{flex-wrap:wrap;gap:25px;margin-top:10px;font-size:12px;display:flex}.article-top{color:var(--muted);gap:13px;margin:32px 0;font-size:12px;display:flex}.article-top a{text-decoration:underline}.article-layout{grid-template-columns:210px minmax(0,780px);justify-content:center;gap:70px;display:grid}.article-layout aside{border-top:1px solid var(--line);flex-direction:column;align-self:start;gap:13px;margin-top:15px;padding-top:20px;font-size:12px;display:flex;position:sticky;top:32px}.article-layout aside .eyebrow{margin-bottom:8px}.article-layout article{min-width:0}.article-header{border-bottom:1px solid var(--line);margin-bottom:35px;padding:12px 0 30px}.article-header h1{letter-spacing:-2px;margin:18px 0;font-size:clamp(35px,4vw,52px);font-weight:550;line-height:1.13}.lede{color:var(--muted);font-size:20px;line-height:1.5}.meta{color:var(--muted);gap:12px;margin-top:26px;font-size:11px;display:flex}.prose{margin-bottom:35px}.prose h2,.sources h2,.related h2{letter-spacing:-.6px;margin:0 0 14px;font-size:25px;font-weight:550;line-height:1.35}.prose p{color:#34433a;margin:0;font-size:17px;line-height:1.85}.dev .prose p{color:#344153}.prose a{overflow-wrap:anywhere;border-bottom:1px solid #9cac90}.brief{border:1px solid var(--line);background:#fff;border-radius:7px;margin:36px 0;overflow:hidden}.brief-heading{border-bottom:1px solid var(--line);background:var(--accent);justify-content:space-between;align-items:center;gap:20px;padding:18px 23px;display:flex}.brief h2{margin:0;font-size:16px}.copy{cursor:pointer;background:var(--ink);color:#fff;white-space:nowrap;border:0;border-radius:4px;padding:8px 13px;font-size:12px}pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;padding:24px;font:14px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace}.download{margin:0 24px 22px;font-size:13px;text-decoration:underline;display:inline-block}.copy-status{font-size:12px}.sources{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:35px 0;padding:24px 0}.sources h2{font-size:18px}.sources ul{margin-bottom:0;padding-left:20px}.sources a{text-underline-offset:3px;font-size:13px;text-decoration:underline}.related{margin-bottom:70px}.related .cards{grid-template-columns:1fr}.related .card{padding:20px 55px 20px 22px}.related .card h3{margin:6px 0;font-size:18px}.related .card .eyebrow{display:none}.standalone{max-width:850px;min-height:55vh;margin:auto;padding:65px 0 80px}.standalone h1{letter-spacing:-2px;font-size:45px;line-height:1.15}.standalone h2{margin-top:32px}.standalone .cards{grid-template-columns:1fr 1fr}.standalone label{margin-top:30px;font-size:13px;font-weight:600;display:block}.standalone input{background:#fff;border:1px solid #9da998;border-radius:5px;width:100%;margin:8px 0;padding:15px}.standalone #search-status{color:var(--muted);font-size:13px}html[lang=zh-CN] h1{letter-spacing:-1.5px;line-height:1.22}html[lang=zh-CN] .hero h1{font-size:clamp(38px,5vw,64px)}html[lang=zh-CN] .eyebrow{letter-spacing:1px}@media (max-width:1000px){.header,.header nav{gap:15px}.brand small{display:none}.header-tools{gap:15px;margin-left:0}.search-link{padding-left:10px}.hero{gap:30px}.hero h1{letter-spacing:-2px}.hero-art{min-height:330px}.article-layout{grid-template-columns:170px minmax(0,1fr);gap:35px}.actions{gap:15px}.text-link{font-size:12px}}@media (max-width:760px){main{padding:0 20px}.header{flex-wrap:wrap;gap:16px;padding:18px 20px}.header .brand{font-size:21px}.header nav{order:3;justify-content:space-between;width:100%;margin:0;font-size:13px}.header-tools{margin-left:auto}.hero{grid-template-columns:1fr;gap:30px;padding-top:43px}.hero h1{letter-spacing:-2.5px;font-size:53px}.hero p{font-size:17px}.hero-art{min-height:270px}.dot-art{width:135px;height:135px}.orbit{width:230px;height:230px}.actions{gap:24px}.quick-strip{grid-template-columns:1fr;gap:14px;padding:18px 0}.quick-strip a{font-size:14px}.cards{grid-template-columns:1fr}.collection{padding-top:35px}.section-heading h2{font-size:28px}.card{padding:23px 24px 36px}.card h3{margin-top:12px}.article-layout{display:block}.article-layout aside{display:none}.article-header h1{letter-spacing:-1px;font-size:36px}.lede{font-size:18px}.prose p{font-size:16px}.prose h2{font-size:23px}.brief-heading{padding:16px}.brief h2{font-size:14px}pre{padding:18px;font-size:13px}.standalone h1{font-size:36px}.standalone .cards{grid-template-columns:1fr}footer{flex-wrap:wrap;gap:24px;padding:30px 20px}.footer-links{gap:20px;width:100%}.source-caption{margin-bottom:25px}.hero .text-link{font-size:13px}}.feature-story{grid-template-columns:1.15fr 1fr;align-items:center;gap:40px;margin:50px 0 10px;display:grid}.feature-story img{border-radius:6px;width:100%;height:auto}.feature-story h2{letter-spacing:-1px;margin:12px 0;font-size:32px;font-weight:500;line-height:1.2}.feature-story p{color:var(--muted);font-size:15px}.feature-story p.small{margin-top:24px;font-size:10px}.product-figure{margin:0 0 35px}.product-figure img{border-radius:5px;width:100%;height:auto}.product-figure figcaption{color:var(--muted);margin-top:9px;font-size:11px}.product-figure a{text-decoration:underline}@media (max-width:760px){.feature-story{grid-template-columns:1fr;gap:22px}.feature-story h2{font-size:28px}}.admin-shell{max-width:1500px;margin:auto;padding:24px 32px 70px}.admin-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding-bottom:20px;display:flex}.admin-header p{color:var(--muted);margin:5px 0}.admin-actions{align-items:center;gap:14px;display:flex}.admin-shell button:not(.button){border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:5px;padding:8px 13px}.admin-shell button:disabled{opacity:.55;cursor:wait}.admin-shell label{margin:12px 0;font-size:13px;font-weight:600;display:block}.admin-shell input:not([type=checkbox]),.admin-shell textarea,.admin-shell select{width:100%;color:var(--ink);font:inherit;background:#fff;border:1px solid #bac6b9;border-radius:5px;margin-top:6px;padding:11px 12px;display:block}.admin-shell textarea{resize:vertical}.admin-shell input:disabled{background:#eef0eb}.admin-message{color:#285823;min-height:26px;font-size:14px}.admin-login{border:1px solid var(--line);background:#fff;border-radius:9px;max-width:410px;margin:70px auto;padding:32px}.admin-login h1{font-size:27px}.admin-login .button{cursor:pointer;border:0;width:100%;margin-top:20px}.admin-workspace{grid-template-columns:340px minmax(0,1fr);gap:35px;display:grid}.admin-library{border-right:1px solid var(--line);padding-right:25px}.admin-library h2{white-space:nowrap;font-size:21px}.admin-library h2 small{color:var(--muted);font-size:12px}.admin-library .button{cursor:pointer;border:0;padding:8px 13px}.admin-filters,.admin-grid{grid-template-columns:1fr 1fr;gap:14px;display:grid}.admin-list{flex-direction:column;gap:8px;max-height:76vh;display:flex;overflow:auto}.admin-list button{flex-direction:column;gap:4px;display:flex;text-align:left!important}.admin-list button.active{background:var(--accent)!important;border-color:var(--ink)!important}.admin-list span,.admin-list small{color:var(--muted);font-size:11px}.admin-editor{min-width:0}.admin-editor-heading{justify-content:space-between;align-items:center;gap:20px;display:flex}.admin-editor h1{letter-spacing:-.6px;font-size:30px;line-height:1.3}.admin-empty{padding:65px 35px}.admin-empty p{color:var(--muted);max-width:500px}.admin-markdown{font-family:ui-monospace,monospace!important;line-height:1.65!important}.admin-savebar{background:var(--paper);border-top:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;padding:18px 0;display:flex;position:sticky;bottom:0}.admin-savebar .button{cursor:pointer;border:0}.admin-shell details{border:1px solid var(--line);border-radius:6px;margin:18px 0;padding:16px}.admin-shell summary{cursor:pointer;font-weight:600}.admin-sources{grid-template-columns:1fr 1fr;gap:4px 15px;display:grid}.admin-sources label{align-items:center;gap:8px;font-weight:400;display:flex}.admin-panel{border:1px solid var(--line);background:#fff;border-radius:6px;margin-bottom:24px;padding:20px}.admin-table{max-height:350px;overflow:auto}.admin-table table{border-collapse:collapse;width:100%;font-size:12px}.admin-table th,.admin-table td{text-align:left;border-bottom:1px solid var(--line);padding:10px}.admin-revision{justify-content:space-between;gap:15px;margin:10px 0;font-size:13px;display:flex}.admin-preview{border:1px solid var(--line);background:#fff;border-radius:8px;margin:20px 0;padding:30px}.admin-preview img{max-width:100%}.admin-preview p{margin-bottom:18px}.admin-preview h2{margin-top:30px}@media (max-width:900px){.admin-workspace{grid-template-columns:1fr}.admin-library{border:0;padding:0}.admin-list{max-height:280px}.admin-header{align-items:start;gap:15px}.admin-actions{flex-wrap:wrap}.admin-shell{padding:20px}.admin-sources{grid-template-columns:1fr}}