body {
            font-family: 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #1a1a2e, #16213e);
            color: #e0e0e0;
            margin: 0;
        }
        .navbar {
            background: rgba(34, 34, 54, 0.95);
            padding: 1.5rem 2rem;
            border-bottom: 2px solid #e94560;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .navbar-brand {
            display: flex;
            align-items: center;
        }
        .navbar-brand .nav-img {
            width: 200px;
            height: 60px;
            object-fit: contain;
            transition: transform 0.3s;
        }
        .navbar-brand .nav-img:hover {
            transform: scale(1.05);
        }
        .btn-contact {
            background: linear-gradient(90deg, #e94560, #ff6f61);
            color: #fff;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 700;
            border: none;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
        }
        .btn-contact:hover {
            background: linear-gradient(90deg, #ff6f61, #e94560);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(233, 69, 96, 0.6);
        }
        .intro-section, .form-section {
            padding: 30px;
            background: rgba(34, 34, 54, 0.9);
            border-radius: 15px;
            margin: 20px auto;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(233, 69, 96, 0.2);
            max-width: 800px;
        }
        .section-title {
            color: #00d4ff;
            font-size: 1.5rem;
            font-weight: 700;
            text-align: left;
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .divider {
            width: 120px;
            height: 4px;
            background: linear-gradient(90deg, #00d4ff, #e94560);
            border-radius: 5px;
            margin: 0 0 20px 0;
        }
        .intro-text {
            line-height: 1.8;
            font-size: 1.1rem;
            text-align: left;
            color: #ff9f1c;
        }
        .intro-text ul {
            padding-left: 20px;
        }
        .form-section {
            text-align: left;
        }
        .form-control {
            border: 1px solid #e94560;
            border-radius: 8px;
            padding: 10px;
            margin-bottom: 15px;
            transition: all 0.3s;
        }
        /* 所有输入框和下拉框样式 */
        .form-control[type="text"],
        .form-control[type="url"],
        .form-control#siteType {
            background: #ffffff;
            color: #000000;
        }
        .form-control::placeholder {
            color: #000000;
            opacity: 0.7;
        }
        .form-control:focus {
            border-color: #00d4ff;
            box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
            background: #ffffff;
        }
        .form-control[type="text"]:focus,
        .form-control[type="url"]:focus,
        .form-control#siteType:focus {
            color: #000000;
        }
        .form-control:focus::placeholder {
            color: #000000;
        }
        #siteType option {
            background: #ffffff;
            color: #000000;
        }
        .form-label {
            color: #ff6f61;
            font-weight: 600;
            margin-bottom: 5px;
        }
        .submit-btn {
            background: linear-gradient(90deg, #e94560, #ff6f61);
            color: #ffffff;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 700;
            border: none;
            transition: all 0.3s;
            width: 100%;
            max-width: 300px;
            margin: 20px 0 0 0;
            display: block;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #ff6f61, #e94560);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(233, 69, 96, 0.6);
        }
        .footer {
            background: #0f0f1a;
            color: #b0b0b0;
            padding: 25px 0;
            text-align: center;
            font-size: 1rem;
            border-top-left-radius: 20px;
            border-top-right-radius: 20px;
            box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.4);
        }
        /* 弹窗样式 */
        .modal-content {
            background: rgba(34, 34, 54, 0.95);
            border: 1px solid #e94560;
            border-radius: 15px;
            color: #e0e0e0;
        }
        .modal-header {
            border-bottom: 2px solid #e94560;
        }
        .modal-title {
            color: #00d4ff;
            font-weight: 700;
        }
        .modal-body {
            color: #ff9f1c;
            line-height: 1.8;
        }
        .modal-footer {
            border-top: 2px solid #e94560;
        }
        .btn-close {
            background: #e94560;
            border-radius: 50%;
            opacity: 1;
        }
        .btn-close:hover {
            background: #ff6f61;
        }
        @media (min-width: 992px) {
            .intro-section, .form-section {
                max-width: 1200px;
                margin-left: auto;
                margin-right: auto;
            }
        }
        @media (max-width: 991.98px) {
            .navbar {
                padding: 1rem 10px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            }
            .navbar-brand .nav-img {
                width: 150px;
                height: 45px;
            }
            .btn-contact {
                padding: 8px 20px;
                font-size: 0.9rem;
            }
            .intro-section, .form-section {
                padding: 15px;
                margin: 10px auto;
            }
            .section-title {
                font-size: 1.2rem;
            }
        }
        .btn-close {
    background: #e94560 url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707A1 1 0 01.293.293z'/%3e%3c/svg%3e") center/1em auto no-repeat;
    border-radius: 50%;
    opacity: 1;
    width: 1em;
    height: 1em;
}
.btn-close:hover {
    background: #ff6f61 url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707A1 1 0 01.293.293z'/%3e%3c/svg%3e") center/1em auto no-repeat;
}