:root{--color-bg:#fff;--color-bg-secondary:#f7f8fc;--color-bg-card:#fff;--color-text-primary:#1a1a2e;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-accent:#4f46e5;--color-accent-hover:#4338ca;--color-accent-light:#eef2ff;--color-accent-teal:#0ea5e9;--color-border:#e5e7eb;--shadow-sm:0 1px 3px #00000014;--shadow-md:0 8px 24px #11182712;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--navbar-height:64px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--color-bg-secondary);color:var(--color-text-primary);margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.brand{letter-spacing:.16em;color:var(--color-text-primary);font-weight:850}.publicNav,.appNav{height:var(--navbar-height);border-bottom:1px solid var(--color-border);background:#fff;justify-content:space-between;align-items:center;padding:0 28px;display:flex}.navLinks,.actions{align-items:center;gap:18px;display:flex}.hero{max-width:980px;margin:0 auto;padding:110px 24px 90px}.eyebrow{color:var(--color-accent);letter-spacing:.08em;text-transform:uppercase;font-weight:750}h1{letter-spacing:-.055em;margin:18px 0;font-size:clamp(2.5rem,6vw,5.5rem);line-height:1}.lead{max-width:720px;color:var(--color-text-secondary);font-size:1.2rem;line-height:1.65}.button{border-radius:var(--radius-sm);background:var(--color-accent);color:#fff;border:0;justify-content:center;align-items:center;padding:12px 18px;font-weight:750;display:inline-flex}.button:hover{background:var(--color-accent-hover)}.button.secondary{color:var(--color-text-primary);border:1px solid var(--color-border);background:#fff}.button.danger{background:#dc2626}.textLink{color:var(--color-text-secondary)}.features{grid-template-columns:repeat(3,1fr);gap:16px;max-width:1180px;margin:auto;padding:20px 24px 100px;display:grid}.card,.features article{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-bg-card);box-shadow:var(--shadow-sm);padding:24px}.features span{color:var(--color-accent)}.features h2{margin-top:30px}.features p,.muted{color:var(--color-text-secondary);line-height:1.6}.authPage{place-items:center;min-height:100vh;padding:24px;display:grid}.authCard{border-radius:var(--radius-lg);width:min(440px,100%);box-shadow:var(--shadow-md);background:#fff;padding:32px}.authCard h1{letter-spacing:-.03em;font-size:2rem}.form{gap:15px;display:grid}.field{gap:7px;font-weight:650;display:grid}.field input,.field select,.field textarea{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:#fff;width:100%;padding:12px}.error{color:#b91c1c}.success{color:#047857}.legal{max-width:820px;margin:auto;padding:60px 24px;line-height:1.75}.legal h1{font-size:3rem}.legal h2{margin-top:32px}.appShell{min-height:100vh}.appNav{z-index:10;position:sticky;top:0}.appNav .navLinks a{color:var(--color-text-secondary);border-radius:8px;padding:8px 10px}.appNav .navLinks a.active{background:var(--color-accent-light);color:var(--color-accent)}.appMain{max-width:1120px;margin:auto;padding:32px 24px}.pageTitle{justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;display:flex}.pageTitle h1{margin:0;font-size:2.25rem}.grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.stack{gap:16px;display:grid}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.row.between{justify-content:space-between}.dropzone{text-align:center;border-radius:var(--radius-lg);background:#fafaff;border:2px dashed #c7d2fe;padding:35px}.documentList{gap:10px;display:grid}.documentItem{border:1px solid var(--color-border);border-radius:12px;justify-content:space-between;align-items:center;padding:14px;display:flex}.chatBox{border:1px solid var(--color-border);background:#fff;border-radius:16px;height:52vh;padding:18px;overflow:auto}.bubble{white-space:pre-wrap;border-radius:14px;max-width:78%;margin:10px 0;padding:12px 14px}.bubble.user{background:var(--color-accent);color:#fff;margin-left:auto}.bubble.assistant{background:var(--color-accent-light)}.langSelect{border:1px solid var(--color-border);background:#fff;border-radius:8px;padding:7px}.loading{min-height:60vh;color:var(--color-text-secondary);place-items:center;display:grid}@media (max-width:760px){.features,.grid{grid-template-columns:1fr}.hero{padding-top:70px}.appNav{align-items:flex-start;height:auto;min-height:64px;padding:12px}.appNav .navLinks{flex-wrap:wrap;justify-content:flex-end;gap:2px}.appNav .navLinks a{padding:6px;font-size:.85rem}.appMain{padding:24px 14px}.publicNav{padding:0 16px}.hideMobile{display:none}}