:root{--bg:#f7f7f7;--surface:#fff;--surface-strong:#eee;--border:#dedede;--text:#555;--text-muted:#777;--text-strong:#151515;--ink:#181818;--accent:#151515;--accent-rgb:21 21 21;color:var(--text);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{background:var(--bg);min-width:320px;margin:0}button,input{font:inherit}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline-offset:3px;outline:3px solid #18181847}a{text-underline-offset:.18em}#root{flex-direction:column;min-height:100svh;display:flex}.site-header{border-bottom:1px solid var(--border);z-index:20;background:#fffffff5;justify-content:flex-start;align-items:center;gap:24px;min-height:58px;padding:10px clamp(18px,5vw,58px);display:flex;position:sticky;top:0;left:0;right:0}.brand{color:var(--text-strong);align-items:center;font-size:17px;font-weight:900;text-decoration:none;display:inline-flex}.brand strong{line-height:1.1}main{flex-direction:column;flex:1;display:flex}.home-hero{text-align:center;max-width:760px;margin:0 auto;padding:46px clamp(18px,5vw,58px) 18px}.home-hero h1{margin-bottom:14px;font-size:72px;line-height:1.02}.home-tagline{color:var(--text-strong);max-width:660px;margin:0 auto 8px;font-size:20px;font-weight:800;line-height:1.55}.tool-index-card{color:var(--text-strong);text-decoration:none}.tool-index-grid{grid-template-columns:repeat(auto-fit,minmax(280px,360px));gap:14px;display:grid}.tool-index-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;gap:12px;min-height:190px;padding:20px;display:grid}.tool-index-card:hover{border-color:#b8b8b8;box-shadow:0 16px 42px #1111111a}.tool-card-action{border:1px solid 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