:root{--primary-50: #eff6ff;--primary-100: #dbeafe;--primary-500: #3b82f6;--primary-600: #2563eb;--primary-700: #1d4ed8;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-900: #111827;--green-600: #16a34a;--amber-600: #d97706;--red-600: #dc2626;--bg: #fafafa;--card: #ffffff;--radius: 10px;--shadow: 0 1px 2px rgba(17, 24, 39, .05)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--gray-900);font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--primary-600);text-decoration:none}a:hover{text-decoration:underline}.page-title{font-size:24px;font-weight:300;letter-spacing:-.01em;margin:0}.page-subtitle{font-size:13px;font-weight:300;color:var(--gray-600);letter-spacing:.02em;margin:4px 0 0}.form-label{display:block;font-size:10px;font-weight:600;color:var(--gray-500);letter-spacing:.1em;text-transform:uppercase;margin:0 0 6px}.form-input{width:100%;font-size:13px;font-family:inherit;color:var(--gray-900);padding:9px 12px;border:1px solid var(--gray-300);border-radius:8px;background:var(--card);outline:none}.form-input:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px var(--primary-50)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:12px;font-weight:500;letter-spacing:.02em;font-family:inherit;padding:9px 16px;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s}.btn-primary{background:var(--gray-900);color:#fff}.btn-primary:hover{background:#000}.btn-blue{background:var(--primary-600);color:#fff}.btn-blue:hover{background:var(--primary-700)}.btn-ghost{background:transparent;color:var(--gray-700);border-color:var(--gray-300)}.btn-ghost:hover{background:var(--gray-50)}.btn:disabled{opacity:.5;cursor:default}.card{background:var(--card);border:1px solid var(--gray-200);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.chip{display:inline-block;font-size:10px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:999px}.chip-blue{background:var(--primary-100);color:var(--primary-700)}.chip-green{background:#dcfce7;color:var(--green-600)}.chip-gray{background:var(--gray-100);color:var(--gray-600)}.chip-amber{background:#fef3c7;color:var(--amber-600)}table.data{width:100%;border-collapse:collapse}table.data th{font-size:10px;font-weight:600;color:var(--gray-500);letter-spacing:.1em;text-transform:uppercase;text-align:left;padding:8px 12px;border-bottom:1px solid var(--gray-200)}table.data td{font-size:12px;color:var(--gray-700);padding:10px 12px;border-bottom:1px solid var(--gray-100)}.shell-nav{display:flex;align-items:center;gap:24px;padding:0 28px;height:56px;background:var(--card);border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:10}.brand{font-size:15px;font-weight:600;letter-spacing:-.01em;color:var(--gray-900)}.brand span{color:var(--primary-600)}.shell-nav a.nav-link{font-size:12.5px;font-weight:500;color:var(--gray-600)}.shell-nav a.nav-link.active{color:var(--gray-900)}.shell-main{max-width:1040px;margin:0 auto;padding:32px 24px 80px}.landing-hero{max-width:760px;margin:0 auto;padding:96px 24px 48px;text-align:center}.landing-hero h1{font-size:44px;font-weight:300;letter-spacing:-.02em;line-height:1.15;margin:0 0 16px}.landing-hero h1 b{font-weight:600;color:var(--primary-600)}.landing-hero p{font-size:16px;font-weight:300;color:var(--gray-600);line-height:1.6;margin:0 0 32px}.landing-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:860px;margin:40px auto 0;padding:0 24px}@media(max-width:720px){.landing-steps{grid-template-columns:1fr}}.landing-steps .card h3{font-size:14px;font-weight:500;margin:10px 0 6px}.landing-steps .card p{font-size:12.5px;color:var(--gray-600);line-height:1.55;margin:0}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{width:380px}.auth-card .card{padding:28px}.chat-wrap{max-width:680px;margin:0 auto;display:flex;flex-direction:column;height:calc(100vh - 56px)}.chat-scroll{flex:1;overflow-y:auto;padding:24px 16px;display:flex;flex-direction:column;gap:10px}.bubble{max-width:78%;padding:10px 14px;border-radius:14px;font-size:13.5px;line-height:1.5;white-space:pre-wrap}.bubble.agent{background:var(--card);border:1px solid var(--gray-200);align-self:flex-start;border-bottom-left-radius:4px}.bubble.user{background:var(--gray-900);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.chat-input-row{display:flex;gap:8px;padding:12px 16px 20px}.typing{color:var(--gray-400);font-size:12px;padding:0 16px 8px}.listing-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.listing-card h3{font-size:14px;font-weight:500;margin:0 0 4px}.listing-card .price{font-size:18px;font-weight:600;letter-spacing:-.01em}.listing-card .meta{font-size:12px;color:var(--gray-500);margin:2px 0 10px}.attr-row{display:flex;flex-wrap:wrap;gap:6px}.empty{text-align:center;color:var(--gray-400);font-size:13px;padding:48px 0}.error-text{color:var(--red-600);font-size:12px;margin-top:8px}