/* 首页 - 简洁专业 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: #f5f7fa;
    color: #303133;
    line-height: 1.6;
}

/* 公告栏 */
.announcement-bar {
    background: #409eff;
    color: white;
    padding: 10px 0;
    font-size: 14px;
}

/* 导航栏 */
.navbar {
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 0;
}

.navbar-brand {
    font-size: 18px;
    font-weight: 600;
    color: #303133;
}

.navbar-dark .navbar-brand {
    color: #303133;
}

.navbar-nav .nav-link {
    color: #606266;
    font-size: 14px;
    padding: 20px 15px;
    transition: color 0.2s;
}

.navbar-nav .nav-link:hover {
    color: #409eff;
}

.navbar-dark .navbar-nav .nav-link {
    color: #606266;
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: #409eff;
}

/* Hero区域 */
.hero-section {
    background: linear-gradient(135deg, #409eff 0%, #66b1ff 100%);
    color: white;
    padding: 100px 0;
}

.hero-section h1 {
    font-size: 40px;
    font-weight: 600;
    margin-bottom: 20px;
}

.highlight {
    font-weight: 700;
}

.hero-section .lead {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 30px;
}

.hero-section .btn-light {
    background: white;
    color: #409eff;
    border: none;
    padding: 12px 40px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 4px;
}

.hero-section .btn-light:hover {
    background: #ecf5ff;
}

/* 通用 */
.py-5 {
    padding: 60px 0;
}

.bg-light {
    background: #fafafa;
}

.section-title {
    font-size: 28px;
    font-weight: 600;
    color: #303133;
    margin-bottom: 10px;
}

.section-subtitle {
    color: #909399;
    font-size: 15px;
}

/* 卡片网格 - 一行显示 */
.service-grid,
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* 卡片 - 顶部蓝色线条 + 圆角 */
.card {
    border: none;
    border-radius: 16px;
    background: white;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    border-top: 4px solid #1890ff;
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

/* 工单卡片 - 顶部蓝色线条 + 圆角 */
.order-card {
    border: none;
    border-radius: 16px;
    background: white;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    border-top: 4px solid #1890ff;
}

.order-card .card-body {
    padding: 40px;
}

/* 表单行 - 并排显示 */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 0;
}

.form-group.full-width {
    grid-column: 1 / -1;
    margin-bottom: 20px;
}

/* 验证码容器 */
.captcha-wrapper {
    display: flex;
    gap: 10px;
}

.captcha-wrapper .captcha-box {
    flex: 1;
}

/* 响应式 - 小屏幕下表单改为单列 */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.card-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: #ecf5ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon i {
    font-size: 32px;
    color: #409eff;
}

.card h4 {
    font-size: 18px;
    font-weight: 600;
    color: #303133;
}

.card-text {
    color: #606266;
    font-size: 14px;
}

/* 表单 */
.form-label {
    font-size: 14px;
    font-weight: 500;
    color: #606266;
    margin-bottom: 8px;
}

.form-control,
.form-select {
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    padding: 10px 15px;
    font-size: 14px;
    color: #606266;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: #409eff;
    box-shadow: 0 0 0 2px rgba(64,158,255,0.2);
}

.form-control::placeholder {
    color: #c0c4cc;
}

/* 按钮 */
.btn-primary {
    background: #409eff;
    border: none;
    border-radius: 4px;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 500;
}

.btn-primary:hover {
    background: #66b1ff;
}

/* 验证码 */
.captcha-box {
    background: #fafafa;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    padding: 10px 15px;
    font-size: 20px;
    font-weight: 600;
    font-family: monospace;
    text-align: center;
    letter-spacing: 5px;
}

.refresh-captcha-btn {
    background: white;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    padding: 0 15px;
    cursor: pointer;
    color: #606266;
    transition: all 0.2s;
}

.refresh-captcha-btn:hover {
    color: #409eff;
    border-color: #409eff;
}

/* 提示 */
.alert {
    border-radius: 4px;
    padding: 12px 20px;
    font-size: 14px;
}

.alert-success {
    background: #f0f9eb;
    border: 1px solid #e1f3d8;
    color: #67c23a;
}

.alert-danger {
    background: #fef0f0;
    border: 1px solid #fde2e2;
    color: #f56c6c;
}

/* Footer */
.footer {
    background: #303133;
    color: #909399;
    padding: 50px 0 20px;
}

.footer h5 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer p {
    font-size: 14px;
}

.footer a {
    color: #909399;
    text-decoration: none;
    font-size: 14px;
}

.footer a:hover {
    color: #409eff;
}

.footer-bottom {
    border-top: 1px solid #434343;
    margin-top: 30px;
    padding-top: 20px;
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* 工具 */
.text-muted {
    color: #909399;
}

.text-primary {
    color: #409eff;
}

.text-danger {
    color: #f56c6c;
}

.me-2 {
    margin-right: 8px;
}

.mb-3 {
    margin-bottom: 15px;
}

.mb-4 {
    margin-bottom: 20px;
}

.mb-5 {
    margin-bottom: 30px;
}

.g-3 {
    gap: 15px;
}

.g-4 {
    gap: 20px;
}

/* 完整响应式适配 */
@media (max-width: 992px) {
    .service-grid,
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* 导航栏 */
    .navbar {
        padding: 10px 0;
    }
    
    .navbar-nav .nav-link {
        padding: 12px 10px;
        font-size: 13px;
    }
    
    /* Hero区域 */
    .hero-section {
        padding: 50px 0;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 24px;
    }
    
    .hero-section .lead {
        font-size: 15px;
    }
    
    .hero-section .btn-light {
        display: block;
        width: 100%;
        padding: 14px 30px;
    }
    
    /* 通用 */
    .py-5 {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    /* 卡片网格 */
    .service-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    /* 卡片 */
    .card-body {
        padding: 20px;
    }
    
    .card-icon {
        width: 56px;
        height: 56px;
    }
    
    .card-icon i {
        font-size: 26px;
    }
    
    .card h4 {
        font-size: 16px;
    }
    
    .card-text {
        font-size: 13px;
    }
    
    /* 工单卡片 */
    .order-card .card-body {
        padding: 24px;
    }
    
    /* 表单 */
    .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .captcha-wrapper {
        flex-direction: column;
    }
    
    .captcha-wrapper .refresh-captcha-btn {
        width: 100%;
        padding: 12px;
    }
    
    /* Footer */
    .footer {
        padding: 40px 0 20px;
        text-align: center;
    }
    
    .footer h5 {
        margin-top: 20px;
    }
    
    .footer-bottom {
        text-align: center;
    }
}

@media (max-width: 480px) {
    /* 更小屏幕的优化 */
    .hero-section {
        padding: 40px 0;
    }
    
    .hero-section h1 {
        font-size: 20px;
    }
    
    .navbar-brand {
        font-size: 16px;
    }
    
    .order-card .card-body {
        padding: 20px;
    }
}

/* 导航栏响应式优化 */
@media (max-width: 991px) {
    .navbar-collapse {
        background: white;
        border-top: 1px solid #e8e8e8;
        margin-top: 10px;
        padding: 10px 0;
    }
    
    .navbar-nav .nav-link {
        padding: 12px 20px;
        border-bottom: 1px solid #f5f5f5;
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .navbar-toggler {
        border: 1px solid #dcdfe6;
        padding: 6px 10px;
    }
    
    .navbar-toggler:focus {
        box-shadow: none;
        outline: none;
    }
}