:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;background:#f7f7f6;color:#171717;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#f7f7f6}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit}.app-shell{display:grid;grid-template-columns:68px minmax(0,1fr);min-height:100vh;background:#f7f7f6}.side-rail{position:sticky;top:0;display:flex;flex-direction:column;align-items:center;gap:24px;height:100vh;padding:22px 12px;border-right:1px solid #e8e8e6;background:#efefed}.rail-logo,.rail-dot{display:grid;place-items:center}.rail-logo{width:40px;height:40px;border:1px solid #dfdfdc;border-radius:8px;overflow:hidden;background:#fff;box-shadow:0 8px 20px #0000000d}.rail-logo img{width:100%;height:100%;object-fit:cover}.rail-dot{width:26px;height:26px;border-radius:8px;color:#777}.rail-dot:before{width:5px;height:5px;border-radius:999px;background:#9b9b96;content:""}.content{min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px;padding:18px clamp(22px,4vw,54px);border-bottom:1px solid #e8e8e6;background:#ffffffb8;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.eyebrow{margin:0 0 4px;color:#6f6f6b;font-size:.76rem;font-weight:800;letter-spacing:0;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{margin-bottom:0;font-size:1.28rem;line-height:1.2}.topbar-note{margin:0;color:#73736f;font-size:.88rem}.topbar-actions{display:flex;align-items:center;gap:12px}.author-link{display:inline-flex;align-items:center;justify-content:center;min-height:36px;border:1px solid #111;border-radius:4px;gap:7px;padding:0 12px;color:#fff;font-size:.88rem;font-weight:800;text-decoration:none;background:#111}.tool-layout{display:grid;grid-template-columns:minmax(320px,560px) minmax(320px,1fr);gap:clamp(22px,4vw,56px);align-items:start;width:min(1280px,calc(100vw - 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