:root{color-scheme:light;--bg:#f7f8fc;--surface:#fff;--ink:#192137;--muted:#64718a;--line:#e0e5f0;--accent:#4f46e5;--soft:#eeedff;--radius:18px;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif}
[data-theme=dark]{color-scheme:dark;--bg:#10121f;--surface:#191d30;--ink:#edf0fa;--muted:#a5aec6;--line:#30374f;--accent:#a6a3ff;--soft:#272744}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button,input{font:inherit}button{cursor:pointer}.skip{position:absolute;top:-100px;left:16px;padding:8px 16px;background:var(--surface);z-index:20}.skip:focus{top:10px}
.reading-header{border-bottom:1px solid var(--line);background:var(--surface)}.header-inner{min-height:76px;max-width:1180px;margin:auto;padding:16px 28px;display:flex;align-items:center;gap:36px}.wordmark{font-weight:800;font-size:21px;letter-spacing:-.04em;white-space:nowrap}.header-inner nav{display:flex;gap:26px;font-size:14px;color:var(--muted);flex-wrap:wrap}.workbench-link{margin-left:auto;white-space:nowrap;color:var(--accent);font-size:14px;font-weight:600}.reading-main{max-width:1124px;margin:0 auto;padding:30px 28px 80px}.breadcrumbs{display:flex;gap:9px;align-items:center;flex-wrap:wrap;font-size:12px;line-height:1.6;color:var(--muted)}.breadcrumbs [aria-current]{overflow-wrap:anywhere}.page-intro{max-width:860px;margin:44px 0 40px}.eyebrow,.step-label{font-size:12px;letter-spacing:.08em;color:var(--accent);font-weight:700}.page-intro h1{font-size:clamp(28px,3.5vw,42px);letter-spacing:-.035em;line-height:1.35;margin:12px 0 18px;font-weight:800}.lead{font-size:17px;color:var(--muted);line-height:1.9;max-width:780px}.date{font-size:12px;color:var(--muted);margin-top:22px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:44px 0 20px;flex-wrap:wrap}.section-heading h2{font-size:22px;margin:0}.section-heading span,.section-heading a{font-size:13px;color:var(--muted)}
.category-links{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}.category-links a{border:1px solid var(--line);padding:6px 13px;border-radius:24px;background:var(--surface);font-size:13px}.resource-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.resource-card{padding:25px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;min-width:0}.resource-card h2,.resource-card h3{font-size:19px;line-height:1.55;margin:16px 0 9px;overflow-wrap:anywhere}.resource-card p{font-size:14px;color:var(--muted);margin:0 0 20px;line-height:1.85}.category{font-size:12px;color:var(--muted)}.card-top,.card-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px}.tool-letter{width:38px;height:38px;display:grid;place-items:center;background:var(--soft);color:var(--accent);font-weight:800;font-size:19px;border-radius:11px}.card-bottom{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;font-size:12px;color:var(--muted)}.card-bottom a,.card-read{color:var(--accent);font-weight:600}.card-read{font-size:13px;margin-top:auto}.tool-directory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;border:1px solid var(--line);background:var(--line);border-radius:var(--radius);overflow:hidden}.tool-directory a{padding:16px 20px;background:var(--surface);display:flex;flex-direction:column;gap:3px}.tool-directory span{font-size:12px;color:var(--muted)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:52px;align-items:start}.prose{min-width:0}.prose section{margin:0 0 38px;scroll-margin-top:24px}.prose h2{font-size:23px;letter-spacing:-.02em;line-height:1.5;margin:0 0 16px}.prose p,.prose li{font-size:16px;line-height:2;color:var(--ink)}.prose p{margin:0 0 16px}.prose ul,.prose ol{padding-left:24px}.prose li{padding-left:5px;margin:9px 0}.prose a{color:var(--accent);text-underline-offset:4px;text-decoration:underline}.prose pre{font-family:inherit;white-space:pre-wrap;overflow-wrap:anywhere;background:var(--surface);padding:24px;border:1px solid var(--line);border-radius:14px;line-height:1.95;font-size:14px}.prose .step-label{font-size:12px;color:var(--accent);margin-bottom:4px}.check,.outcome{padding:16px 20px;background:var(--soft);border-radius:12px;margin:22px 0}.check b,.outcome b{font-size:12px;color:var(--accent)}.check p,.outcome p{font-size:14px;margin:4px 0 0}.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:18px}.aside-card h2{font-size:18px;line-height:1.6;margin:10px 0}.aside-card p,.aside-card small{font-size:13px;line-height:1.9;color:var(--muted)}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff!important;border:1px solid transparent;border-radius:10px;min-height:44px;padding:10px 18px;font-size:14px;font-weight:600;text-decoration:none!important}.button:hover{filter:brightness(.96)}[data-theme=dark] .button{color:#14142c!important}.button.secondary{background:var(--surface);border-color:var(--line);color:var(--ink)!important}.aside-card .button{display:flex;margin-top:10px;text-align:center}.aside-link{display:block;font-size:13px;color:var(--accent);padding-top:14px;line-height:1.8}.contents{display:flex;flex-direction:column;gap:9px;font-size:12px;color:var(--muted);padding-top:22px}.contents a:hover{color:var(--accent)}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{padding:6px 12px;border:1px solid var(--line);border-radius:8px;text-decoration:none;font-size:13px}.intro-panel{padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.wide-prose{max-width:820px}.table-scroll{overflow-x:auto;margin:28px 0 38px}table{border-collapse:collapse;width:100%;min-width:500px;background:var(--surface);font-size:14px}th,td{padding:16px;text-align:left;border:1px solid var(--line);vertical-align:top}th{font-weight:600}caption{text-align:left;color:var(--muted);padding-bottom:12px;font-size:13px}.callout{padding:32px;background:var(--soft);border-radius:var(--radius);margin-top:45px}.callout h2{font-size:23px;margin:0 0 12px}.callout p{color:var(--muted);max-width:680px}.button-row{display:flex;gap:10px;flex-wrap:wrap}
.reading-footer{max-width:1124px;margin:auto;padding:34px 28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:26px}.reading-footer p{font-size:12px;color:var(--muted)}.reading-footer nav{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:var(--muted);align-items:start}.footer-note{width:100%;display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:11px}.footer-note label{display:flex;align-items:center;gap:6px}.reading-toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);padding:12px 22px;background:var(--ink);color:var(--bg);font-size:14px;border-radius:10px;max-width:calc(100% - 32px);z-index:30}.reading-toast[hidden]{display:none}
@media(min-width:1000px){.article-aside{position:sticky;top:24px}}@media(max-width:900px){.resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr);gap:16px}.article-aside{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.header-inner{gap:24px}.header-inner nav{gap:16px}.tool-directory{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.header-inner{padding:15px 20px;flex-wrap:wrap;gap:12px}.header-inner nav{order:3;flex-basis:100%;gap:20px;font-size:13px}.reading-main{padding:22px 20px 48px}.page-intro{margin:30px 0}.lead{font-size:15px}.resource-grid{grid-template-columns:minmax(0,1fr)}.resource-card{padding:22px}.article-aside{grid-template-columns:minmax(0,1fr)}.tool-directory{grid-template-columns:minmax(0,1fr)}.prose h2{font-size:21px}.prose p,.prose li{font-size:15px}.reading-footer{padding:28px 20px}.reading-footer nav{gap:16px}.workbench-link{font-size:13px}.callout{padding:24px}.intro-panel{padding:22px}}