/* 物联卡页面样式 */
:root {
    --primary-color: #2563EB;
    --secondary-color: #3B82F6;
    --accent-color: #60A5FA;
    --text-color: #1E293B;
    --light-bg: #F8FAFC;
    --white: #ffffff;
    --dark: #0F172A;

    /* 物联卡主题色 - 蓝色系 */
    --sim-primary: #2563EB;
    --sim-secondary: #3B82F6;
    --sim-accent: #60A5FA;

    /* 渐变色 */
    --gradient-1: linear-gradient(135deg, #2563EB, #3B82F6);
    --gradient-2: linear-gradient(135deg, #3B82F6, #60A5FA);
    --gradient-3: linear-gradient(135deg, #60A5FA, #2563EB);

    /* 阴影效果 */
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--light-bg);
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--box-shadow);
    z-index: 1000;
}

.logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--sim-primary);
}

.hot-label {
    background: var(--sim-accent);
    color: var(--white);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    margin-left: 4px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--card-shadow);
    border-radius: 8px;
    padding: 1rem;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background: var(--light-bg);
    color: var(--sim-primary);
}

.region-icon {
    width: 20px;
    height: 20px;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

.sim-data-section {
    padding: 2rem 0;
}

.sim-data-header {
    text-align: center;
    margin-bottom: 3rem;
}

.sim-data-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.sim-data-header p {
    font-size: 1.2rem;
    color: var(--sim-secondary);
    font-weight: 500;
}

/* 套餐分类标签 */
.package-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.package-tab {
    padding: 1rem 2rem;
    background: var(--white);
    border: 2px solid #E5E7EB;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    min-width: 200px;
}

.package-tab:hover {
    border-color: var(--sim-primary);
    transform: translateY(-2px);
}

.package-tab.active {
    background: var(--gradient-1);
    color: var(--white);
    border-color: var(--sim-primary);
}

.package-tab .tab-main {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.package-tab .tab-sub {
    font-size: 0.9rem;
    opacity: 0.8;
}

.package-tab.active .tab-sub {
    opacity: 1;
}

/* 价格网格布局 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* 价格卡片样式 - 覆pricing.css的左右布局 */
.pricing-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
    border: none;
    margin: 0;
    padding: 0;
    display: block;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.pricing-card::before,
.pricing-card::after {
    display: none;
}

/* 覆盖pricing.css的左右布局样式 */
.pricing-card .card-left,
.pricing-card .card-right,
#gpu-packages .card-left,
#gpu-packages .card-right,
#overseas-packages .card-left,
#overseas-packages .card-right,
#cloudpc-packages .card-left,
#cloudpc-packages .card-right,
#single-packages .card-left,
#single-packages .card-right,
#device-packages .card-left,
#device-packages .card-right,
.china-packages .card-left,
.china-packages .card-right,
.global-packages .card-left,
.global-packages .card-right {
    display: none;
}

#gpu-packages .pricing-card,
#overseas-packages .pricing-card,
#cloudpc-packages .pricing-card,
#single-packages .pricing-card,
#device-packages .pricing-card,
.china-packages .pricing-card,
.global-packages .pricing-card {
    display: block;
    flex-direction: column;
}

/* 套餐卡片头部样式 */
.card-header {
    background: var(--gradient-1);
    color: var(--white);
    padding: 1.5rem;
    text-align: center;
    border-radius: 16px 16px 0 0;
    position: relative;
    overflow: hidden;
}

.pricing-type {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: block;
    position: relative;
    z-index: 2;
}

.server-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

.card-body {
    padding: 2rem 1.5rem;
    background: var(--white);
}

.pricing-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #F3F4F6;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features i {
    width: 20px;
    text-align: center;
    color: var(--sim-primary);
}

.sim-features {
    color: var(--sim-secondary);
    font-weight: 500;
}

.sim-features i {
    color: var(--sim-accent);
}

.pricing-options {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.price-option {
    flex: 1;
    text-align: center;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 8px;
}

.price-header {
    font-size: 0.9rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.price-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sim-primary);
}

.currency {
    font-size: 1rem;
    margin-right: 2px;
}

.period {
    font-size: 0.9rem;
    color: #6B7280;
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 1rem;
    background: var(--gradient-1);
    color: var(--white);
    text-decoration: none;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pricing-btn:hover {
    background: var(--gradient-2);
    transform: translateY(-2px);
}

/* 设备套餐头部背景图片 - 专用样式 */
#device-packages .card-header {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 2rem 1.5rem;
    text-align: center;
    border-radius: 16px 16px 0 0;
    border: none;
    box-shadow: none;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 设备套餐标题样式 - 蓝色文字+白色半透明背景 */
#device-packages .pricing-type {
    color: var(--sim-primary);
    background: rgba(255, 255, 255, 0.8);
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 700;
    display: inline-block;
    margin: 0 auto 0.5rem auto;
    letter-spacing: -0.5px;
    text-align: center;
}

/* 设备套餐背景图片设置 */
#device-basic .card-header {
    background-image: url('../../images/dongle.jpg');
}

#device-standard .card-header {
    background-image: url('../../images/dongle.jpg');
}

#device-advanced .card-header {
    background-image: url('../../images/mifi.jpg');
}

#device-enterprise .card-header {
    background-image: url('../../images/mifi.jpg');
}

/* 确保设备套餐文字在背景之上 */
#device-packages .pricing-type,
#device-packages .server-info {
    position: relative;
    z-index: 3;
}

/* FAQ部分 */
.faq-section {
    background: var(--white);
    padding: 4rem 2rem;
    margin-top: 4rem;
}

.faq-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.faq-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow);
}

.faq-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--sim-primary);
}

.faq-item p {
    color: var(--text-color);
    line-height: 1.6;
}

/* 页脚样式 */
footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section p {
    line-height: 1.6;
    opacity: 0.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section ul li i {
    width: 20px;
    color: var(--sim-accent);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--sim-primary);
    transform: translateY(-2px);
}

.qr-code-container {
    display: flex;
    gap: 1rem;
}

.qr-code-item {
    text-align: center;
}

.qr-code-item img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.qr-code-label {
    font-size: 0.8rem;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

.footer-bottom a {
    color: var(--sim-accent);
    text-decoration: none;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu {
        display: block;
        cursor: pointer;
    }

    .mobile-menu span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--text-color);
        margin: 5px 0;
        transition: 0.3s;
    }

    .mobile-menu.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .mobile-menu.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .nav-links.active {
        display: flex;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--box-shadow);
        z-index: 999;
    }

    .sim-data-header h2 {
        font-size: 2rem;
    }

    .package-tab {
        padding: 0.75rem 1.5rem;
        min-width: 150px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-options {
        flex-direction: column;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .qr-code-container {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .sim-data-header {
        padding: 0 1rem;
    }

    .sim-data-header h2 {
        font-size: 1.5rem;
    }

    .package-tabs {
        flex-direction: column;
        align-items: center;
    }

    .package-tab {
        width: 100%;
        max-width: 200px;
    }

    .card-body {
        padding: 1.5rem 1rem;
    }

    .pricing-btn {
        padding: 0.75rem;
    }
}