:root{--ink:#18201c;--muted:#69736e;--paper:#f4f5f1;--surface:#fff;--line:#dfe4dc;--accent:#b74b32;--accent-dark:#8f3825;--green:#587260;--danger:#a2382c;font-family:ui-sans-serif,system-ui,"Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-size:14px}button,input,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.brand{color:var(--ink);font-size:18px;font-weight:800;letter-spacing:.03em;text-decoration:none}.eyebrow,.nav-label{margin:0;color:var(--muted);font-size:11px;letter-spacing:.13em;font-weight:800}.button{border:0;background:none;min-height:42px;padding:10px 14px;border-radius:6px;font-weight:700}.button.primary{background:var(--accent);color:#fff}.button.primary:hover{background:var(--accent-dark)}.button.primary:disabled{opacity:.55;cursor:wait}.button.text{color:var(--muted)}.button.text:hover{color:var(--ink)}.error{color:var(--danger);min-height:22px}.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(0,650px) 1fr;background:var(--surface)}.auth-content{padding:12vh 10vw;max-width:720px}.auth-content h1{font-size:clamp(36px,4.5vw,60px);line-height:1.08;letter-spacing:-.03em;max-width:580px;margin:40px 0 20px}.auth-copy{color:var(--muted);font-size:17px;line-height:1.75;max-width:520px}.auth-form{display:grid;gap:15px;margin-top:42px;max-width:420px}.auth-form label{display:grid;gap:7px;font-weight:750}.auth-form input{border:1px solid var(--line);border-radius:6px;background:#fcfcf9;padding:13px 14px;outline:0}.auth-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #b74b3220}.auth-note{background:#26322d;color:#f4f6ef;padding:12vh 8vw;display:flex;flex-direction:column;justify-content:flex-end}.auth-note span{font-size:110px;font-weight:850;line-height:1;color:#b4c1aa}.auth-note p{font-size:28px;line-height:1.35;max-width:410px}.app-shell{min-height:100vh;background:var(--surface)}.topbar{height:64px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:#fff}.topbar-actions{display:flex;align-items:center;gap:20px;color:var(--muted);font-size:13px}.workbench{display:grid;grid-template-columns:230px minmax(0,1fr) 270px;height:calc(100vh - 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