:root{--bg-primary:#0b0f19;--bg-secondary:#141c2f;--bg-tertiary:#1e2942;--border-color:#2b3958;--text-primary:#f3f4f6;--text-secondary:#9ca3af;--text-tertiary:#6b7280;--accent-primary:#10b981;--accent-primary-hover:#059669;--accent-primary-rgb:16, 185, 129;--accent-secondary:#6366f1;--accent-secondary-hover:#4f46e5;--card-bg:#141c2f99;--card-shadow:0 8px 32px 0 #0000005e;--glass-blur:blur(12px);--danger:#ef4444;--warning:#f59e0b;--success:#10b981;--font-heading:"Outfit", sans-serif;--font-body:"Inter", "Noto Sans Tamil", sans-serif;--transition-fast:.15s ease;--transition-normal:.3s cubic-bezier(.4, 0, .2, 1);--transition-slow:.5s ease;--sidebar-width:260px;--top-header-height:80px}body.light-theme{--bg-primary:#f8fafc;--bg-secondary:#fff;--bg-tertiary:#f1f5f9;--border-color:#e2e8f0;--text-primary:#0f172a;--text-secondary:#475569;--text-tertiary:#94a3b8;--accent-primary:#0d9488;--accent-primary-hover:#0f766e;--accent-primary-rgb:13, 148, 136;--accent-secondary:#4f46e5;--accent-secondary-hover:#3730a3;--card-bg:#fffc;--card-shadow:0 8px 32px 0 #94a3b826;--danger:#dc2626;--warning:#d97706;--success:#0d9488}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;font-family:var(--font-body);background-color:var(--bg-primary);color:var(--text-primary);transition:background-color var(--transition-normal), color var(--transition-normal);overflow:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--text-primary);font-weight:600}button,input,select,textarea{color:inherit;font-family:inherit}.app-container{width:100vw;height:100vh;display:flex;position:relative}.landing-screen{background-color:var(--bg-primary);color:var(--text-primary);height:100vh;overflow-y:auto}.landing-screen[hidden]{display:none}.landing-nav{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:5;background-color:#0b0f19c2;border-bottom:1px solid 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var(--bg-primary)}.landing-hero-content{max-width:760px}.landing-eyebrow{color:var(--accent-primary);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;font-size:13px;font-weight:800}.landing-hero h1{letter-spacing:0;margin-bottom:22px;font-size:clamp(58px,11vw,132px);font-weight:800;line-height:.88}.landing-lead{color:var(--text-secondary);max-width:680px;font-size:clamp(17px,2vw,22px);line-height:1.55}.landing-actions{flex-wrap:wrap;margin-top:30px}.landing-insight-panel{box-shadow:var(--card-shadow);background-color:#141c2fb8;border:1px solid #ffffff1a;border-radius:8px;align-self:end;gap:2px;display:grid;overflow:hidden}body.light-theme .landing-insight-panel{background-color:#ffffffd6}.landing-insight-panel div{gap:4px;padding:18px;display:grid}.landing-insight-panel div+div{border-top:1px solid var(--border-color)}.landing-insight-panel span{color:var(--accent-primary);font-family:var(--font-heading);font-size:26px;font-weight:800}.landing-insight-panel p{color:var(--text-secondary);font-size:13px;line-height:1.45}.landing-feature-band{background-color:var(--bg-secondary);border-top:1px solid var(--border-color);grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;display:grid}.landing-feature-band article{background-color:var(--bg-secondary);min-height:220px;padding:clamp(22px,3vw,34px)}.landing-feature-band span{color:var(--accent-primary);margin-bottom:28px;font-size:12px;font-weight:900;display:block}.landing-feature-band h2{margin-bottom:12px;font-size:22px}.landing-feature-band p{color:var(--text-secondary);font-size:14px;line-height:1.65}.auth-screen{background:linear-gradient(135deg, rgba(var(--accent-primary-rgb), .16), transparent 34%), linear-gradient(315deg, #6366f12e, transparent 40%), var(--bg-primary);place-items:center;height:100vh;padding:24px;display:grid}.auth-screen[hidden]{display:none}.auth-panel{background-color:var(--bg-secondary);border:1px solid var(--border-color);width:min(100%,520px);max-height:calc(100vh 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