*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#f8fafc;color:#333;min-height:100vh;}
.header{background:#fff;border-bottom:1px solid #e2e8f0;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;}
.header-left{display:flex;align-items:center;gap:16px;}
.header-left h1{font-size:20px;color:#1a3a5c;font-weight:600;}
.back-link{font-size:14px;color:#1a73e8;text-decoration:none;padding:8px 12px;border-radius:8px;transition:background 0.3s;}
.back-link:hover{background:#e8f0fe;}
.nav{display:flex;gap:8px;}
.nav a{padding:10px 16px;text-decoration:none;color:#666;border-radius:8px;font-size:14px;transition:all 0.3s;}
.nav a:hover,.nav a.active{color:#1a73e8;background:#e8f0fe;}
.container{max-width:1200px;margin:0 auto;padding:24px;}
.card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 8px rgba(0,0,0,0.04);margin-bottom:24px;transition:box-shadow 0.3s;}
.card:hover{box-shadow:0 4px 16px rgba(0,0,0,0.06);}
.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;}
.card-header h2{font-size:18px;color:#1a3a5c;font-weight:600;}
.btn{padding:10px 20px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all 0.3s;}
.btn-primary{background:#1a73e8;color:#fff;}
.btn-primary:hover{background:#1557b0;transform:translateY(-1px);}
.btn-outline{background:#fff;color:#666;border:1px solid #e0e0e0;}
.btn-outline:hover{background:#f8fafc;border-color:#1a73e8;color:#1a73e8;}
.btn-danger{background:#fff1f0;color:#c62828;border:1px solid #ffcdd2;}
.btn-danger:hover{background:#ffebee;}
.search-bar{display:flex;gap:12px;margin-bottom:20px;}
.search-bar input{flex:1;padding:12px 16px;border:1px solid #e0e0e0;border-radius:8px;font-size:14px;transition:border-color 0.3s;}
.search-bar input:focus{outline:none;border-color:#1a73e8;}
.data-table{width:100%;border-collapse:collapse;margin-top:16px;}
.data-table th,.data-table td{padding:14px 12px;text-align:left;border-bottom:1px solid #f0f0f0;font-size:14px;}
.data-table th{background:#f8fafc;color:#666;font-weight:500;}
.data-table tbody tr:hover{background:#fafbfc;}
.data-table a{color:#1a73e8;text-decoration:none;}
.data-table a:hover{text-decoration:underline;}
.tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:500;}
.tag-self{background:#e8f0fe;color:#1a73e8;}
.tag-api{background:#fff3e0;color:#e65100;}
.tag-idle{background:#f0f0f0;color:#666;}
.tag-success{background:#e8f5e9;color:#2e7d32;}
.tag-fail{background:#fff1f0;color:#c62828;}
.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:14px;color:#333;margin-bottom:8px;font-weight:500;}
.form-group input,.form-group select{width:100%;padding:12px 16px;border:1px solid #e0e0e0;border-radius:8px;font-size:14px;transition:border-color 0.3s;}
.form-group input:focus,.form-group select:focus{outline:none;border-color:#1a73e8;}
.form-group textarea{width:100%;padding:12px 16px;border:1px solid #e0e0e0;border-radius:8px;font-size:14px;height:150px;resize:vertical;transition:border-color 0.3s;}
.form-group textarea:focus{outline:none;border-color:#1a73e8;}
.form-row{display:flex;gap:16px;}
.form-row .form-group{flex:1;}
.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);align-items:center;justify-content:center;z-index:1000;animation:fadeIn 0.3s;}
.modal.show{display:flex;}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
.modal-content{background:#fff;border-radius:12px;padding:28px;width:90%;max-width:520px;animation:slideUp 0.3s;}
@keyframes slideUp{from{transform:translateY(20px);opacity:0;}to{transform:translateY(0);opacity:1;}}
.modal-content h2{font-size:20px;color:#1a3a5c;margin-bottom:16px;}
.modal-hint{color:#999;font-size:13px;margin-bottom:16px;padding:12px;background:#f8fafc;border-radius:8px;}
.modal-footer{display:flex;gap:12px;justify-content:flex-end;margin-top:24px;}
.message{padding:16px;border-radius:8px;margin-bottom:20px;font-size:14px;text-align:center;}
.message.success{background:#e8f5e9;color:#2e7d32;border:1px solid #c8e6c9;}
.message.error{background:#fff1f0;color:#c62828;border:1px solid #ffcdd2;}
.empty-state{text-align:center;padding:60px 20px;color:#999;font-size:15px;}
.login-box{background:#fff;border-radius:16px;padding:48px;max-width:420px;width:90%;margin:100px auto;box-shadow:0 4px 24px rgba(0,0,0,0.06);animation:slideUp 0.4s;}
.logo{text-align:center;margin-bottom:32px;}
.logo h1{font-size:28px;color:#1a3a5c;margin-bottom:8px;font-weight:600;}
.logo p{color:#666;font-size:14px;}
.login-hint{text-align:center;margin-top:20px;color:#999;font-size:13px;}
.email-list{margin-top:16px;}
.message-item{padding:16px;border-bottom:1px solid #f0f0f0;cursor:pointer;transition:all 0.3s;}
.message-item:hover{background:#f8fafc;padding-left:20px;}
.message-item.unread{background:#f0f7ff;border-left:3px solid #1a73e8;}
.message-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px;}
.message-from{font-weight:600;color:#1a3a5c;font-size:15px;}
.message-time{color:#999;font-size:13px;white-space:nowrap;}
.message-subject{color:#333;font-size:14px;margin-bottom:4px;}
.message-preview{color:#666;font-size:13px;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.email-detail{padding:24px;background:#fff;border-radius:12px;}
.detail-subject{font-size:24px;color:#1a3a5c;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid #f0f0f0;font-weight:600;}
.detail-info{display:flex;gap:24px;margin-bottom:20px;color:#666;font-size:14px;flex-wrap:wrap;}
.detail-body{line-height:1.8;color:#333;font-size:15px;}
.mode-hint{margin-top:16px;padding:16px;background:#f8fafc;border-radius:8px;font-size:14px;color:#666;line-height:1.8;}
code{background:#f0f7ff;padding:4px 8px;border-radius:4px;font-family:Consolas,Monaco,monospace;font-size:13px;color:#1a73e8;word-break:break-all;}