/* /static/website/css/style.css */

/* ========== 基础重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1e80ff;
    --primary-dark: #1557b0;
    --secondary-color: #00d4aa;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f5f7fa;
    --white: #ffffff;
    --gradient-blue: linear-gradient(135deg, #1e80ff 0%, #00d4aa 100%);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 0 5%;
    transition: all 0.3s;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
}

.nav-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 14px;
    display: inline-block;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary {
    background: var(--gradient-blue);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(30, 128, 255, 0.4);
}

.btn-block { width: 100%; }

.btn-white {
    background: var(--white);
    color: var(--primary-color);
    padding: 15px 50px;
    font-size: 16px;
}

.btn-white:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-dark);
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    padding-top: 90px;
    background: linear-gradient(180deg, #fafbfc 0%, #ffffff 100%);
   
}

.breadcrumb-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 5%;
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    font-size: 14px;
    font-weight: 400;
    color: #666680;
    letter-spacing: 0.3px;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 12px;
    color: #d0d0d5;
    font-weight: 300;
    font-size: 12px;
}

.breadcrumb a {
    color: #666680;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    padding: 4px 8px;
    border-radius: 6px;
    margin: -4px -8px;
}

.breadcrumb a:hover {
    color: var(--primary-color);
    background: rgba(30, 128, 255, 0.06);
}

.breadcrumb a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 8px;
    right: 8px;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 1px;
}

.breadcrumb a:hover::after {
    transform: scaleX(1);
}

.breadcrumb li:last-child {
    color: var(--text-dark);
    font-weight: 500;
}

.breadcrumb li:last-child a {
    color: var(--text-dark);
    cursor: default;
}

.breadcrumb li:last-child a:hover {
    background: transparent;
    color: var(--text-dark);
}

.breadcrumb li:last-child a::after {
    display: none;
}

/* ========== Hero 区域 ========== */
.hero {
    padding-top: 70px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f5f0 100%);
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 5%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 48px;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-content h1 span {
    color: var(--primary-color);
}

.hero-content p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

.stat-item { text-align: center; }

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-image { position: relative; }

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    animation: float 3s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.floating-card.card-2 {
    bottom: 20%;
    right: -5%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ========== 通用区块 ========== */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

/* ========== 特性区域 ========== */
.features {
    padding: 100px 5%;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 30px;
    border-radius: 15px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== 产品预览 ========== */
.products-preview {
    padding: 100px 5%;
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.product-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.product-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-blue);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.product-icon i {
    font-size: 36px;
    color: var(--white);
}

.product-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.product-card p {
    color: var(--text-light);
}

/* ========== 客户案例 ========== */
.cases {
    padding: 100px 5%;
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--bg-light);
    border-radius: 20px;
    padding: 30px;
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.case-industry {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.case-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.case-card p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.case-link {
    color: var(--primary-color);
    font-weight: 500;
}

.case-link:hover { text-decoration: underline; }

/* ========== CTA 区域 ========== */
.cta {
    padding: 100px 5%;
    background: var(--gradient-blue);
    text-align: center;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 42px;
    color: var(--white);
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

/* ========== 页脚 ========== */
.footer {
    background: #1a1a2e;
    color: var(--white);
    padding: 80px 5% 40px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 25px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all 0.3s;
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 25px;
}

.footer-links ul li {
    margin-bottom: 15px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.footer-bottom-links {
    display: flex;
    gap: 30px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.footer-bottom-links a:hover {
    color: var(--white);
}

/* ========== 页面标题区 ========== */
.page-header {
    padding: 80px 5% 60px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f5f0 100%);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    color: var(--text-light);
}

/* ========== 产品详情 ========== */
.product-details {
    padding: 80px 5%;
}

.product-details.alt {
    background: var(--bg-light);
}

.feature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.feature-section.reverse {
    direction: rtl;
}

.feature-section.reverse > * {
    direction: ltr;
}

.feature-tag {
    display: inline-block;
    background: var(--gradient-blue);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.feature-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.feature-desc {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 25px;
    line-height: 1.8;
}

.feature-list {
    margin-bottom: 30px;
}

.feature-list li {
    padding: 10px 0;
    color: var(--text-dark);
}

.feature-list li i {
    color: var(--secondary-color);
    margin-right: 10px;
}

.feature-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ========== 价格套餐 ========== */
.pricing-section {
    padding: 80px 5%;
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 40px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.save-badge {
    background: var(--secondary-color);
    color: var(--white);
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 12px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border-radius: 20px;
    padding: 50px 40px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    border: 1px solid #eee;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured {
    border: 3px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-badge {
    position: absolute;
    top: 20px;
    right: -35px;
    background: var(--gradient-blue);
    color: var(--white);
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 12px;
    font-weight: bold;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.pricing-desc {
    color: var(--text-light);
    margin-bottom: 20px;
}

.pricing-card .price {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary-color);
    margin: 20px 0;
}

.pricing-card .price .currency {
    font-size: 24px;
    vertical-align: top;
}

.pricing-card .price .period {
    font-size: 16px;
    color: var(--text-light);
    font-weight: normal;
}

.pricing-features {
    list-style: none;
    margin: 30px 0;
    text-align: left;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    color: var(--text-light);
}

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

.pricing-features li i {
    margin-right: 10px;
}

.pricing-features li .fa-check {
    color: var(--secondary-color);
}

.pricing-features li .fa-times {
    color: #ccc;
}

.pricing-note {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 15px;
}

/* ========== FAQ ========== */
.faq-section {
    padding: 80px 5%;
    background: var(--bg-light);
}

.faq-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: var(--white);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
    cursor: pointer;
}

.faq-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== 合作伙伴 ========== */
.partners-stats {
    padding: 60px 5%;
    background: var(--gradient-blue);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-box {
    text-align: center;
    color: var(--white);
}

.stat-box .stat-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--white);
}

.stat-box .stat-label {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
}

.partners-section {
    padding: 80px 5%;
}

.partners-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-logo {
    background: var(--white);
    border: 1px solid #eee;
    border-radius: 15px;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    transition: all 0.3s;
}

.partner-logo:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.partner-logo img {
    max-width: 100%;
    max-height: 100%;
}

.partner-types {
    padding: 80px 5%;
    background: var(--bg-light);
}

.partner-types h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.type-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.type-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.type-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.type-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.type-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.partner-cta {
    padding: 80px 5%;
    text-align: center;
}

.partner-cta h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.partner-cta p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
}

/* ========== 新闻列表 ========== */
.news-filter {
    padding: 40px 5% 20px;
    background: var(--white);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 10px 25px;
    border-radius: 25px;
    background: var(--bg-light);
    color: var(--text-dark);
    transition: all 0.3s;
    cursor: pointer;
}

.filter-tab:hover,
.filter-tab.active {
    background: var(--primary-color);
    color: var(--white);
}

.news-section {
    padding: 60px 5%;
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.news-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    display: block !important;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.news-link {
    display: block;
}

.news-image {
    height: 200px;
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-image i {
    font-size: 60px;
    color: rgba(255, 255, 255, 0.8);
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.news-category {
    background: var(--bg-light);
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
    color: var(--primary-color);
}

.news-meta time {
    font-size: 14px;
    color: var(--text-light);
}

.news-content h2 {
    font-size: 18px;
    margin-bottom: 15px;
    line-height: 1.5;
    color: var(--text-dark);
}

.news-content p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-readmore {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.news-readmore:hover {
    text-decoration: underline;
}

.news-readmore i {
    transition: transform 0.3s;
}

.news-link:hover .news-readmore i {
    transform: translateX(5px);
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-link {
    padding: 10px 20px;
    border-radius: 5px;
    background: var(--white);
    color: var(--text-dark);
    transition: all 0.3s;
    border: 1px solid #eee;
}

.page-link:hover,
.page-link.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.newsletter {
    padding: 80px 5%;
    background: var(--white);
    text-align: center;
}

.newsletter h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.newsletter p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 15px;
    max-width: 500px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.newsletter-form input {
    flex: 1;
    min-width: 250px;
    padding: 15px 25px;
    border: 2px solid #eee;
    border-radius: 25px;
    font-size: 16px;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ========== 滚动动画 - 修复版 ========== */
.fade-in,
.slide-up {
    opacity: 1 !important;
    transform: translateY(0) !important;
    transition: all 0.6s ease;
}

/* 文章列表中的 fade-in 强制显示 */
.news-grid .fade-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
    visibility: visible !important;
}

.news-grid .news-card {
    display: block !important;
    visibility: visible !important;
}

/* ========== Toast 提示 ========== */
.toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--white);
    padding: 15px 30px;
    border-radius: 50px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast-success { border-left: 4px solid #00d4aa; }
.toast-success i { color: #00d4aa; }

.toast-error { border-left: 4px solid #ff4757; }
.toast-error i { color: #ff4757; }

.toast-info { border-left: 4px solid #1e80ff; }
.toast-info i { color: #1e80ff; }

/* ========== 回到顶部 ========== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: var(--gradient-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: 0 5px 20px rgba(30, 128, 255, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(30, 128, 255, 0.5);
}

/* ========== 表单错误 ========== */
input.error,
textarea.error {
    border-color: #ff4757 !important;
    background-color: #fff5f5 !important;
}

/* ========== 关于我们页面样式 ========== */
.about-intro {
    padding: 100px 5%;
    background: var(--white);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-content h2 {
    font-size: 36px;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.intro-content p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.intro-content strong {
    color: var(--primary-color);
    font-weight: 600;
}

.intro-cta {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.intro-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 数据统计 */
.about-stats {
    padding: 80px 5%;
    background: var(--gradient-blue);
}

.stats-grid-large {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-box-large {
    text-align: center;
    color: var(--white);
}

.stat-icon {
    font-size: 48px;
    margin-bottom: 15px;
    opacity: 0.9;
}

.stat-box-large .stat-number {
    display: block;
    font-size: 48px;
    font-weight: bold;
    color: var(--white);
    margin-bottom: 10px;
}

.stat-box-large .stat-label {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
}

/* 发展历程 */
.about-timeline {
    padding: 100px 5%;
    background: var(--bg-light);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    direction: rtl;
}

.timeline-item:nth-child(odd) > * {
    direction: ltr;
}

.timeline-year {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    position: relative;
}

.timeline-item:nth-child(even) .timeline-year {
    justify-content: flex-start;
}

.timeline-year::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--white);
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-year::after {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-year::after {
    left: -10px;
}

.timeline-content {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.timeline-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 荣誉资质 */
.about-awards {
    padding: 100px 5%;
    background: var(--white);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.award-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-light);
    border-radius: 20px;
    transition: all 0.3s;
}

.award-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.award-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.award-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.award-card p {
    color: var(--text-light);
    font-size: 14px;
}

/* 核心团队 */
.about-team {
    padding: 100px 5%;
    background: var(--bg-light);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.team-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.team-avatar {
    width: 100px;
    height: 100px;
    background: var(--gradient-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.team-avatar i {
    font-size: 40px;
    color: var(--white);
}

.team-card h3 {
    font-size: 20px;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.team-role {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 15px;
}

.team-desc {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
}

/* 企业文化 */
.about-culture {
    padding: 100px 5%;
    background: var(--white);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.culture-card {
    text-align: center;
    padding: 50px 30px;
    background: var(--bg-light);
    border-radius: 20px;
    transition: all 0.3s;
}

.culture-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.culture-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.culture-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.culture-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 联系 CTA */
.about-contact-cta {
    padding: 100px 5%;
    background: var(--gradient-blue);
}

.contact-cta-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    color: var(--white);
}

.contact-cta-content h2 {
    font-size: 42px;
    margin-bottom: 15px;
}

.contact-cta-content > p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
}

.contact-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
}

.contact-item i {
    font-size: 20px;
}

/* ========== 文章详情页 ========== */
.article-detail {
    padding: 100px 5% 60px;
    background: var(--white);
}

.article-detail .section-container {
    max-width: 900px;
}

.breadcrumb {
    margin-bottom: 5px;
}

.breadcrumb a {
    color: var(--text-light);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.article-header {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.article-category {
    background: var(--bg-light);
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 14px;
    color: var(--primary-color);
}

.article-header time {
    color: var(--text-light);
    font-size: 14px;
}

.article-author {
    color: var(--text-light);
    font-size: 14px;
}

.article-title {
    font-size: 36px;
    line-height: 1.4;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-dark);
}

.article-content h1,
.article-content h2,
.article-content h3 {
    margin: 30px 0 15px;
    color: var(--text-dark);
}

.article-content p {
    margin-bottom: 20px;
}

.article-content img {
    max-width: 100%;
    border-radius: 10px;
    margin: 20px 0;
}

.article-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

.article-footer {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.article-share {
    display: flex;
    align-items: center;
    gap: 15px;
}

.article-share a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.share-wechat {
    background: #07c160;
    color: white;
}

.share-weibo {
    background: #e6162d;
    color: white;
}

.article-back {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.article-back a {
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}

.article-back a:hover {
    color: var(--primary-color);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1200px) {
    .features-grid,
    .types-grid,
    .stats-grid-large,
    .awards-grid,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }
    
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-buttons {
        display: none;
    }

    .mobile-menu-btn {
        display: block !important;
    }

    .nav-links.mobile-active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 20px;
        gap: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .features-grid,
    .products-grid,
    .cases-grid,
    .pricing-grid,
    .news-grid,
    .types-grid,
    .partners-grid,
    .stats-grid,
    .stats-grid-large,
    .awards-grid,
    .team-grid,
    .culture-grid {
        grid-template-columns: 1fr;
    }

    .feature-section,
    .feature-section.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .page-header h1 {
        font-size: 32px;
    }

    .cta h2 {
        font-size: 32px;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-cta {
        flex-direction: column;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 20px;
        direction: ltr !important;
    }
    
    .timeline-year {
        justify-content: flex-start !important;
        padding-left: 50px;
    }
    
    .timeline-year::after {
        left: 10px !important;
        right: auto !important;
    }
    
    .contact-cta-buttons {
        flex-direction: column;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 20px;
    }
    
    .contact-cta-content h2 {
        font-size: 32px;
    }
    
    .breadcrumb {
        padding-top: 85px;
    }
    
    .breadcrumb-container {
        padding: 15px 5%;
    }
    
    .breadcrumb li {
        font-size: 13px;
    }
    
    .breadcrumb li:not(:last-child)::after {
        margin-left: 8px;
        font-size: 11px;
    }
    
    .article-title {
        font-size: 24px;
    }
    
    .article-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}