/* ================= common.css - 所有页面公共样式 ================= */

/* 基础样式 */
html { scroll-behavior: smooth; }
.faq-answer { transition: all 0.2s ease-out; }
.rotate-180 { transform: rotate(180deg); }
.service-card:hover, .solution-card:hover, .case-card:hover, .advantage-card:hover, .pain-card:hover, .industry-card:hover { transform: translateY(-4px); transition: all 0.2s ease; }

/* ========== 全球布局下拉菜单 - 鼠标悬停左侧地区显示右侧国家（万企帮风格） ========== */
.megamenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 780px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.18);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 100;
    border: 1px solid #eef2f6;
    margin-top: 12px;
}
.dropdown:hover .megamenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 左右分栏布局 */
.megamenu-container {
    display: flex;
    min-height: 380px;
}

/* 左侧地区选项区域 */
.region-list-panel {
    flex: 1;
    background-color: #f8fafc;
    border-radius: 16px 0 0 16px;
    border-right: 1px solid #eef2f6;
    padding: 16px 0;
}
.region-option {
    padding: 10px 20px;
    margin: 4px 0;
    font-size: 14px;
    font-weight: 500;
    color: #334155;
    cursor: pointer;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}
.region-option:hover {
    background-color: #ffffff;
    color: #2563eb;
    border-left-color: #2563eb;
}
.region-option.active {
    background-color: #ffffff;
    color: #2563eb;
    border-left-color: #2563eb;
}

/* 右侧国家列表区域 */
.country-list-panel {
    flex: 2;
    padding: 20px;
    background: white;
    border-radius: 0 16px 16px 0;
}
.country-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px 16px;
}
.country-item {
    display: block;
    padding: 8px 12px;
    font-size: 13px;
    color: #334155;
    border-radius: 8px;
    transition: all 0.15s ease;
    text-decoration: none;
    cursor: pointer;
}
.country-item:hover {
    background-color: #eff6ff;
    color: #2563eb;
    transform: translateX(4px);
}

/* 普通下拉菜单样式 - 服务菜单 */
.simple-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: white;
    border-radius: 14px;
    box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 100;
    border: 1px solid #eef2f6;
    overflow: hidden;
}
.dropdown:hover .simple-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.simple-dropdown a {
    display: block;
    padding: 10px 20px;
    font-size: 0.875rem;
    color: #334155;
    border-bottom: 1px solid #f1f5f9;
    text-decoration: none;
}
.simple-dropdown a:last-child { border-bottom: none; }
.simple-dropdown a:hover { background-color: #f8fafc; color: #2563eb; padding-left: 28px; }

/* 导航按钮交互 */
.nav-btn, .btn-interactive { transition: all 0.2s ease; }
.nav-btn:hover { transform: translateY(-1px); filter: brightness(105%); }

/* 提交按钮 */
.submit-btn { background-color: #1d4ed8; transition: all 0.2s ease; }
.submit-btn:hover { transform: translateY(-2px); background-color: #1e40af; box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3); }

/* FAQ问题折叠 */
.faq-question { cursor: pointer; transition: background-color 0.2s ease; }
.faq-question:hover { background-color: #eff6ff !important; }

/* 右侧悬浮组件 */
.float-sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.float-item {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    padding: 10px;
    width: 70px;
    border: 1px solid #f0f0f0;
    position: relative;
}
.float-item:hover { transform: translateX(-4px); box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15); background-color: #f8fafc; }
.float-icon { font-size: 28px; display: block; margin-bottom: 6px; }
.float-label { font-size: 12px; color: #4b5563; font-weight: 500; }
.qrcode-popup {
    position: absolute;
    right: 80px;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 15px;
    width: 150px;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    border: 1px solid #eef2f6;
}
.float-item.qrcode-item:hover .qrcode-popup { opacity: 1; visibility: visible; right: 90px; pointer-events: auto; }
.qrcode-img { width: 120px; height: 120px; background: #f1f5f9; margin: 0 auto 10px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 48px; color: #2563eb; }
.qrcode-title { font-size: 14px; font-weight: bold; color: #1e293b; margin-bottom: 5px; }
.qrcode-desc { font-size: 11px; color: #6c757d; }

/* 手机端菜单样式 */
.mobile-submenu summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 500; padding: 8px 0; }
.mobile-submenu summary::-webkit-details-marker { display: none; }
.mobile-region-btn { padding: 8px 12px; margin: 4px 0; border-radius: 8px; transition: all 0.2s; cursor: pointer; background-color: #f3f4f6; }
.mobile-region-btn.active { background-color: #2563eb; color: white; }

/* 案例卡片图片样式 */
.case-image { background-size: cover; background-position: center; height: 180px; }

/* 响应式适配 */
@media (max-width: 860px) { 
    .megamenu { width: 720px; left: 50%; transform: translateX(-50%); }
    .country-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .megamenu { width: 95vw; left: 2.5%; transform: translateX(0); }
    .dropdown:hover .megamenu { transform: translateX(0); }
    .float-sidebar { right: 10px; gap: 8px; }
    .float-item { width: 55px; padding: 6px; }
    .float-icon { font-size: 22px; }
    .float-label { font-size: 10px; }
    .qrcode-popup { width: 130px; right: 65px; }
    .qrcode-img { width: 100px; height: 100px; font-size: 38px; }
    .float-item.qrcode-item:hover .qrcode-popup { right: 70px; }
}