*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f6f7fb;--card:#fff;--text:#1a1a2e;--muted:#6b7280;--primary:#2563eb;--primary-dark:#1d4ed8;--primary-light:#eff4ff;--border:#e5e7eb;--danger:#dc2626;--success:#16a34a;--shadow-sm:0 1px 2px rgba(16,24,40,.06);--shadow:0 4px 16px rgba(16,24,40,.08);--shadow-lg:0 12px 32px rgba(16,24,40,.12);--radius:14px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{max-width:1120px;margin:0 auto;padding:0 24px}.nav{background:hsla(0,0%,100%,.85);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:10}.nav-inner{max-width:1120px;margin:0 auto;padding:13px 24px;display:flex;align-items:center;gap:28px}.nav-brand{font-weight:800;font-size:18px;background:linear-gradient(135deg,var(--primary),#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:20px;flex:1 1}.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .15s}.nav-links a:hover{color:var(--primary)}.nav-user{display:flex;gap:10px}.btn,.nav-user{align-items:center}.btn{display:inline-flex;justify-content:center;padding:9px 18px;border-radius:9px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;box-shadow:var(--shadow-sm)}.btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:linear-gradient(135deg,var(--primary),#3b82f6);border-color:transparent;color:#fff;box-shadow:0 4px 12px rgba(37,99,235,.28)}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;box-shadow:0 6px 16px rgba(37,99,235,.34)}.btn-danger{color:var(--danger);border-color:#fecaca}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:box-shadow .2s,transform .2s}a>.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.grid{display:grid;grid-gap:18px;gap:18px}.grid-2{grid-template-columns:repeat(auto-fill,minmax(340px,1fr))}.grid-3{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.badge{display:inline-block;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:600}.badge-green{background:#dcfce7;color:#15803d}.badge-blue{background:#dbeafe;color:#1d4ed8}.badge-gray{background:#f3f4f6;color:#4b5563}.input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:9px;font-size:14px;font-family:inherit;transition:border-color .15s,box-shadow .15s}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}textarea.input{resize:vertical}.field{margin-bottom:16px}.field label{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-bottom:6px}.page-header{padding:36px 0 22px}.page-header h1{font-size:30px;letter-spacing:-.02em;margin-bottom:6px}.page-header p{color:var(--muted);font-size:15px}.hero{padding:56px 0 40px;text-align:center}.hero h1{font-size:44px;font-weight:800;letter-spacing:-.03em;line-height:1.2;background:linear-gradient(135deg,#1a1a2e 20%,var(--primary) 70%,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{max-width:640px;margin:16px auto 0;color:var(--muted);font-size:17px}.hero-actions{display:flex;gap:12px;justify-content:center;margin-top:28px}.module-card{position:relative;overflow:hidden;height:100%}.module-card h3{margin-bottom:8px;font-size:18px}.module-card .icon{font-size:26px;margin-bottom:10px}.error{color:var(--danger);font-size:14px;margin-top:8px}.muted{color:var(--muted)}.chat-box{display:flex;flex-direction:column;gap:10px;max-height:460px;overflow-y:auto;padding:4px}.chat-msg{max-width:75%;padding:10px 14px;border-radius:12px;font-size:14px;white-space:pre-wrap}.chat-user{align-self:flex-end;background:linear-gradient(135deg,var(--primary),#3b82f6);color:#fff}.chat-assistant{align-self:flex-start;background:#f1f5f9;color:var(--text)}.chat-input-row{display:flex;gap:10px;margin-top:12px}.chat-input-row .input{flex:1 1}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--muted);font-weight:500;padding:8px 0}td{padding:11px 0;border-top:1px solid var(--border)}.empty{text-align:center;padding:40px 20px;color:var(--muted)}.empty .icon{font-size:40px;margin-bottom:8px}