:root{--bg: #111318;--bg-raised: #181b22;--bg-panel: #14161d;--border: #262a36;--border-strong: #343a4a;--text: #e6e8ef;--text-dim: #9aa1b2;--text-faint: #6b7280;--accent: #6d8dff;--accent-strong: #4d6fff;--ok: #22c55e;--warn: #f59e0b;--bad: #ef4444;--tip-bg: #1a2030;--tip-border: #2d3a58}*{box-sizing:border-box}html,body,#app{margin:0;height:100%;height:100dvh;overflow:hidden;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:14px}button{font:inherit;color:inherit;background:var(--bg-raised);border:1px solid var(--border-strong);border-radius:6px;padding:5px 10px;cursor:pointer}button:hover{border-color:var(--accent)}button.primary{background:var(--accent-strong);border-color:var(--accent-strong);color:#fff}button.primary:hover{filter:brightness(1.1)}button.danger{border-color:#7f1d1d;color:#fca5a5}button:disabled{opacity:.5;cursor:default}input,select,textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border-strong);border-radius:6px;padding:5px 8px;width:100%}input:focus,select:focus,textarea:focus{outline:1px solid var(--accent)}label{display:block;margin:10px 0 4px;color:var(--text-dim);font-size:12px}.login-screen{height:100%;display:flex;align-items:center;justify-content:center}.login-card{width:380px;background:var(--bg-panel);border:1px solid var(--border);border-radius:12px;padding:28px}.login-card h1{margin:0 0 4px;font-size:22px}.login-card .sub{color:var(--text-dim);margin-bottom:18px}.login-card form{display:flex;flex-direction:column;gap:10px}.login-error{color:var(--bad);font-size:13px;min-height:16px}.tip{background:var(--tip-bg);border:1px solid #2d3a58;border-radius:8px;padding:10px 12px;color:var(--text-dim);font-size:12.5px;line-height:1.5;margin:10px 0}.tip b{color:var(--text)}.tip .tip-icon{margin-right:6px}.workspace{height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:14px;padding:8px 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#a855f78c}.landing-hero{max-width:760px;margin:0 auto;padding:72px 24px 56px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px}.landing-hero h1{font-size:clamp(30px,5vw,46px);margin:0}.landing-hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--lp-purple),var(--lp-amber),var(--lp-cyan));-webkit-background-clip:text;background-clip:text;color:transparent}.landing-lede{font-size:17px;max-width:620px;margin:0}.landing-cta{display:flex;align-items:center;gap:18px;margin-top:8px;flex-wrap:wrap;justify-content:center}.landing-cta .landing-login{font-size:15px;padding:10px 24px}.landing-ghost{color:var(--lp-cyan);text-decoration:none;font-size:14px}.landing-ghost:hover{text-decoration:underline}.landing-section{max-width:1020px;margin:0 auto;padding:56px 24px}.landing-section h2{font-size:clamp(24px,3.5vw,32px);margin:0 0 8px;text-align:center}.landing-section-sub{text-align:center;margin:0 auto 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