/* 组件样式 - 导航栏、页脚等公共组件 */

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: var(--color-bg);
    z-index: 1000;
    transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-white);
    font-weight: 700;
    font-size: var(--text-sm);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text .company-name {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.logo-text .company-name-en {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    font-family: var(--font-family-en);
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-size: var(--text-base);
    color: var(--color-text);
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

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

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

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

/* 页脚 */
.footer {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-section h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-lg);
    color: var(--color-text-white);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--color-text-white);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer-contact-item svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-4px);
}

/* Hero区域 */
.hero {
    position: relative;
    height: 600px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: var(--navbar-height);
}

.hero-content {
    text-align: center;
    color: var(--color-text-white);
    z-index: 2;
    padding: 0 var(--space-lg);
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease forwards;
}

.hero-subtitle {
    font-size: var(--text-xl);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
                      radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
    z-index: 1;
}

/* 特性卡片 */
.feature-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border-light);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--color-text-white);
}

.feature-card h3 {
    font-size: var(--text-xl);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 时间轴 */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 4px;
    width: 10px;
    height: 10px;
    background-color: var(--color-primary);
    border-radius: 50%;
    border: 2px solid var(--color-bg);
}

.timeline-date {
    font-size: var(--text-sm);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.timeline-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.timeline-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* 产品表格 */
.product-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.product-table th,
.product-table td {
    padding: var(--space-md);
    text-align: center;
    border-bottom: 1px solid var(--color-border-light);
}

.product-table th {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    font-weight: 600;
}

.product-table tr:hover td {
    background-color: var(--color-bg-light);
}

.product-table .has-product {
    color: var(--color-primary);
    font-weight: 600;
}

.product-table .has-product::after {
    content: '●';
}

/* 客户Logo墙 */
.partner-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    justify-content: center;
}

.partner-item {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    border: 1px solid var(--color-border-light);
}

.partner-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
    color: var(--color-primary);
}

/* 流程步骤 */
.process-step {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.process-step:hover {
    box-shadow: var(--shadow-md);
}

.process-step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.process-step-content h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-xs);
}

.process-step-content p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* 服务卡片 */
.service-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--color-text-white);
}

.service-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
}

.service-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 可持续发展卡片 */
.sustain-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-success);
}

.sustain-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-success);
    flex-shrink: 0;
}

.sustain-content h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
}

.sustain-content p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 联系信息卡片 */
.contact-info-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-white);
    flex-shrink: 0;
}

.contact-info-content h4 {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.contact-info-content p {
    font-size: var(--text-base);
    font-weight: 500;
}