:root{--bg:#f8f9fa;--text:#1a1a1a;--primary:#2033b4;--primary-hover:#1a1a8f;--border:#e5e7eb;--card-bg:#fff;--error:#ef4444;--error-bg:#fef2f2;--muted:#6b7280;--radius:12px;--radius-lg:24px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.container{max-width:800px;margin:0 auto;padding:0 24px}nav{z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);background-color:#fffc;align-items:center;height:64px;display:flex;position:sticky;top:0}.nav-content{justify-content:space-between;align-items:center;width:100%;display:flex}.logo{align-items:center;gap:8px;font-size:1.25rem;font-weight:600;display:flex}.logo-icon{color:#fff;background-image:url(/icon.png);background-position:50%;background-size:cover;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.btn-icon{cursor:pointer;color:var(--muted);background:0 0;border:none;border-radius:9999px;padding:8px;transition:background .2s}.btn-icon:hover{background-color:#0000000d}main{padding:48px 0}.hero{text-align:center;margin-bottom:48px}.hero h1{letter-spacing:-.02em;margin-bottom:16px;font-size:3rem;font-weight:800}.hero h1 span{color:var(--primary)}.hero p{color:var(--muted);max-width:500px;margin:0 auto;font-size:1.125rem}.input-card{background-color:var(--card-bg);border-radius:var(--radius-lg);border:1px solid var(--border);gap:8px;margin-bottom:32px;padding:8px;display:flex;box-shadow:0 1px 2px #0000000d}.input-card:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px #0596691a}.input-wrapper{flex:1;align-items:center;display:flex;position:relative}.input-wrapper svg{color:#9ca3af;position:absolute;left:16px}.input-wrapper input{background:0 0;border:none;outline:none;width:100%;padding:16px 16px 16px 48px;font-size:1.125rem}.btn-primary{background-color:var(--primary);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;align-items:center;gap:8px;min-height:56px;padding:0 32px;font-size:1rem;font-weight:500;transition:background .2s;display:flex}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover)}.btn-primary:disabled{cursor:not-allowed;background-color:#e5e7eb}.error-box{background-color:var(--error-bg);color:var(--error);border-radius:var(--radius);border:1px solid #fee2e2;align-items:center;gap:12px;margin-bottom:32px;padding:16px;font-size:.875rem;font-weight:500;display:flex}.summary-card{background-color:var(--card-bg);border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden;box-shadow:0 1px 2px #0000000d}.summary-header{border-bottom:1px solid var(--border);background-color:#f9fafb;justify-content:space-between;align-items:center;padding:16px 32px;display:flex}.summary-label{color:var(--primary);text-transform:uppercase;letter-spacing:.05em;align-items:center;gap:8px;font-size:.75rem;font-weight:600;display:flex}.summary-content{padding:32px 48px}.markdown-body{color:#374151}.markdown-body h1,.markdown-body h2,.markdown-body h3{color:var(--text);margin-top:24px;margin-bottom:16px}.markdown-body p{margin-bottom:16px}.markdown-body ul,.markdown-body ol{margin-bottom:16px;padding-left:24px}.markdown-body li{margin-bottom:8px}.loading-state{color:var(--muted);flex-direction:column;justify-content:center;align-items:center;padding:80px 0;display:flex}.spinner{border:4px solid #f3f4f6;border-top-color:var(--primary);border-radius:50%;width:64px;height:64px;margin-bottom:24px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{border:2px dashed var(--border);border-radius:var(--radius-lg);color:var(--muted);flex-direction:column;justify-content:center;align-items:center;padding:8px 0;display:flex}.empty-icon{background-color:#f9fafb;border-radius:16px;margin-bottom:16px;padding:16px}.history-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:60;background-color:#0003;position:fixed;inset:0}.history-sidebar{z-index:70;background-color:#fff;flex-direction:column;width:100%;max-width:400px;display:flex;position:fixed;top:0;bottom:0;right:0;box-shadow:-10px 0 30px #0000001a}.history-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:24px;display:flex}.history-list{flex:1;padding:24px;overflow-y:auto}.history-item{text-align:left;border-radius:var(--radius);border:1px solid var(--border);cursor:pointer;background:#fff;width:100%;margin-bottom:16px;padding:16px;transition:all .2s}.history-item:hover{border-color:var(--primary);background-color:#05966905}.history-item h3{white-space:nowrap;text-overflow:ellipsis;margin-bottom:4px;font-size:1rem;font-weight:600;overflow:hidden}.history-item-meta{color:var(--muted);gap:12px;font-size:.75rem;display:flex}.auth-btn{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:8px;align-items:center;gap:8px;padding:8px 16px;font-weight:500;display:flex}.auth-btn:hover{background-color:#f9fafb}footer{text-align:center;color:var(--muted);border-top:1px solid var(--border);padding:48px 0;font-size:.875rem}@media (max-width:640px){.input-card{flex-direction:column;padding:16px}.btn-primary{width:100%}.hero h1{font-size:2.25rem}.summary-content{padding:24px}}