:root { color-scheme: light; }*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}.shell{max-width:1440px;margin:auto;padding:0 34px 60px}.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--green);color:#fff;display:grid;place-items:center;font:bold 22px serif}.brand strong{display:block;font-size:18px;line-height:1.1}.brand small{color:var(--muted);font-size:11px}.top-actions{display:flex;align-items:center;gap:15px}.save-state{font-size:12px;color:var(--green)}.hero{padding:42px 0 34px;display:flex;justify-content:space-between;gap:20px;align-items:end}.hero h1{font:600 clamp(28px,3vw,42px)/1.23 Georgia,"Microsoft 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