* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background: linear-gradient(145deg, #F4F7FC 0%, #E9EEF5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            color: #1F2A44;
        }

        /* 轻盈优雅的导航栏 - 浅色半透明 */
        .top-navbar {
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-container {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            padding: 0 32px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            transition: opacity 0.2s;
        }

        .logo-icon {
            font-size: 1.9rem;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.05));
        }

        .logo-text {
            font-size: 1.55rem;
            font-weight: 700;
            background: linear-gradient(135deg, #2C3E66, #9B7B3C);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 40px;
        }

        .nav-links a {
            color: #3A4A6E;
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            padding: 8px 0;
            transition: all 0.25s;
            position: relative;
        }

        .nav-links a:hover {
            color: #B8860B;
        }

        .nav-links a.active {
            color: #B8860B;
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, #C6A43B, #E4C16A);
            border-radius: 4px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 0, 0, 0.03);
            padding: 6px 16px 6px 10px;
            border-radius: 60px;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .user-avatar {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, #D4AF37, #B67D12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            color: white;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
        }

        .user-info span {
            font-weight: 500;
            font-size: 0.9rem;
            color: #2C3E66;
        }

        .mobile-menu-btn {
            display: none;
            background: rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(0, 0, 0, 0.1);
            border-radius: 12px;
            color: #B8860B;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 6px 14px;
            transition: all 0.2s;
        }

        /* 主容器 — 浅色高端卡片，光影细腻 */
        .container {
            width: 100%;
            max-width: 1100px;
            background: #FFFFFF;
            border-radius: 40px;
            box-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.02);
            overflow: hidden;
            margin: 40px auto;
            flex: 1;
            transition: transform 0.3s;
        }

        .header {
            background: linear-gradient(115deg, #F9FBFE 0%, #F1F5FA 100%);
            padding: 40px 40px 32px;
            text-align: center;
            border-bottom: 1px solid #EAEFF5;
        }

        .header h1 {
            font-size: 2.8rem;
            font-weight: 700;
            background: linear-gradient(120deg, #2A3D66, #9B7E3A);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .header p {
            opacity: 0.65;
            font-size: 1.05rem;
            color: #4A5B7A;
        }

        .content {
            display: flex;
            flex-wrap: wrap;
            min-height: 540px;
        }

        .input-section, .result-section {
            padding: 40px 36px;
            flex: 1;
            min-width: 320px;
        }

        .input-section {
            background: #FCFDFF;
            border-right: 1px solid #ECF0F5;
        }

        .form-group {
            margin-bottom: 28px;
        }

        label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
            color: #2C3E66;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
        }

        input {
            width: 100%;
            padding: 14px 18px;
            background: #FFFFFF;
            border: 1px solid #E2E8F0;
            border-radius: 24px;
            font-size: 1rem;
            color: #1A2A44;
            transition: all 0.25s;
            font-weight: 500;
            box-shadow: 0 1px 2px rgba(0,0,0,0.02);
        }

        input:focus {
            border-color: #D4AF37;
            outline: none;
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
            background: #FFFFFF;
        }

        input::placeholder {
            color: #B9C3D4;
            font-weight: 400;
        }

        .captcha-container {
            display: flex;
            gap: 14px;
            align-items: center;
        }

        .captcha-container input {
            flex: 1;
        }

        .captcha-img {
            height: 50px;
            border-radius: 24px;
            border: 1px solid #E2E8F0;
            cursor: pointer;
            background: #F8FAFE;
            transition: 0.2s;
            box-shadow: 0 1px 3px rgba(0,0,0,0.02);
        }

        .captcha-img:hover {
            transform: scale(1.02);
            border-color: #D4AF37;
        }

        .btn {
            background: linear-gradient(95deg, #B67D12, #D4AF37);
            color: white;
            border: none;
            padding: 16px 28px;
            border-radius: 44px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s;
            margin-top: 16px;
            letter-spacing: 1px;
            box-shadow: 0 6px 14px rgba(182, 125, 18, 0.2);
        }

        .btn:hover {
            background: linear-gradient(95deg, #D4AF37, #E7C568);
            transform: translateY(-2px);
            box-shadow: 0 12px 22px rgba(182, 125, 18, 0.25);
        }

        .btn:active {
            transform: translateY(1px);
        }

        .result-section h2 {
            color: #2C3E66;
            margin-bottom: 28px;
            font-size: 1.9rem;
            font-weight: 600;
            letter-spacing: -0.3px;
            border-left: 4px solid #D4AF37;
            padding-left: 20px;
        }

        .result-card {
            background: #FFFFFF;
            border-radius: 32px;
            overflow: hidden;
            border: 1px solid #EDF2F7;
            box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.05);
            transition: all 0.2s;
        }

        .result-header {
            background: #F9FCFE;
            padding: 20px 28px;
            text-align: center;
            border-bottom: 1px solid #EEF3F9;
        }

        .result-header h3 {
            font-size: 1.6rem;
            font-weight: 600;
            color: #B67D12;
            letter-spacing: -0.2px;
        }

        .result-content {
            padding: 28px;
        }

        .result-item {
            display: flex;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid #F0F4FA;
        }

        .result-item:last-child {
            border-bottom: none;
        }

        .item-label {
            font-weight: 500;
            color: #5B6E91;
            font-size: 0.95rem;
        }

        .item-value {
            color: #1F2A44;
            font-weight: 600;
            font-family: monospace;
            letter-spacing: 0.2px;
        }

        /* 状态颜色微调 */
        .card-status-active {
            color: #2B7A4B;
            font-weight: 700;
            background: #E9F6EF;
            padding: 4px 12px;
            border-radius: 40px;
            display: inline-block;
        }

        .card-status-used {
            color: #B5472D;
            font-weight: 700;
            background: #FEF1EF;
            padding: 4px 12px;
            border-radius: 40px;
            display: inline-block;
        }

        .no-result {
            text-align: center;
            padding: 50px 28px;
            background: #FBFDFF;
            border-radius: 32px;
            border: 1px dashed #CFDDEF;
        }

        .no-result i {
            font-size: 3.5rem;
            margin-bottom: 20px;
            display: inline-block;
            opacity: 0.6;
            color: #B8860B;
        }

        .no-result p {
            color: #6A7C9E;
            font-size: 1rem;
        }

        .error-message {
            background: #FEF7F5;
            color: #B45A3B;
            padding: 14px 22px;
            border-radius: 60px;
            border: 1px solid #FFE2D6;
            margin: 20px 0;
            text-align: center;
            font-weight: 500;
            font-size: 0.9rem;
        }

        .hidden-item {
            display: none !important;
        }

        /* 页脚浅色雅致 */
        .main-footer {
            background: #F9FBFE;
            border-top: 1px solid #E9EEF5;
            margin-top: 40px;
            padding: 48px 0 24px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 48px;
        }

        .footer-section h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: #B8860B;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .footer-section p, .contact-info li, .footer-links a {
            color: #5C6F91;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            text-decoration: none;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: #B8860B;
            transform: translateX(5px);
        }

        .contact-info {
            list-style: none;
        }

        .contact-info li {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .contact-info i {
            font-style: normal;
            font-weight: 500;
            min-width: 32px;
            color: #B8860B;
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 40px auto 0;
            padding: 24px 32px 0;
            border-top: 1px solid #E9EEF5;
            text-align: center;
            font-size: 0.8rem;
            color: #8C9BB2;
        }

        .footer-links-horizontal {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 14px;
        }

        .footer-links-horizontal a {
            color: #7A8AA8;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-links-horizontal a:hover {
            color: #B8860B;
        }

        @media (max-width: 800px) {
            .nav-container {
                padding: 0 20px;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 24px 28px;
                gap: 20px;
                border-bottom: 1px solid #EFE5CF;
                z-index: 999;
                box-shadow: 0 12px 24px rgba(0,0,0,0.02);
            }
            .nav-links.active {
                display: flex;
            }
            .content {
                flex-direction: column;
            }
            .input-section {
                border-right: none;
                border-bottom: 1px solid #ECF0F5;
            }
            .header h1 {
                font-size: 2rem;
            }
            .container {
                margin: 24px 20px;
            }
        }

        @media (max-width: 550px) {
            .input-section, .result-section {
                padding: 28px 20px;
            }
            .btn {
                padding: 14px;
            }
            .user-info span {
                display: none;
            }
            .user-info {
                padding: 4px 10px;
            }
        }