/* CSS Custom Properties - 与现有网站保持一致 */
:root {
    --primary-color: #014CC4;
    --secondary-color: #6C757D;
    --accent-color: #007BFF;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --white: #FFFFFF;
    --black: #000000;
    --light-gray: #F8F9FA;
    --border-color: #E9ECEF;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
    --container-max-width: 1200px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --font-family-heading: 'Lexend Deca', sans-serif;
    --font-family-body: 'Public Sans', sans-serif;
}

/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-body);
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: hidden;
    background: var(--white);
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏 - 复用现有样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--black);
    box-shadow: var(--shadow-light);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    padding: 0;
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 70px;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    position: absolute;
    left: 35px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
}

.nav-logo .logo-img {
    height: 51.2px;
    width: auto;
    display: block;
    opacity: 1 !important;
    position: relative;
    z-index: 1002;
    transform: scale(1.1);
    transform-origin: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
    margin-left: auto;
}

.nav-link {
    font-weight: 500;
    color: var(--white);
    transition: var(--transition);
    position: relative;
    padding: 10px 0;
    text-decoration: none;
}

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

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

.dropdown {
    position: relative;
}

.dropdown-arrow {
    font-size: 12px;
    margin-left: 5px;
    transition: var(--transition);
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--black);
    box-shadow: var(--shadow-medium);
    border-radius: 8px;
    padding: 10px 0;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    list-style: none;
}

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

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--white);
    transition: var(--transition);
    text-decoration: none;
}

.dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: var(--white);
    margin: 3px 0;
    transition: var(--transition);
}

/* 导航栏滚动效果 */
.header.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-light);
}

.header.scrolled .nav-link {
    color: var(--text-primary);
}

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

.header.scrolled .nav-link.active::after {
    background: var(--primary-color);
}

.header.scrolled .nav-logo {
    left: 20px;
}

.header.scrolled .logo-img {
    height: 64px;
    transform: scale(0.84);
    transform-origin: center;
}

.header.scrolled .dropdown-menu {
    background: var(--white);
    box-shadow: var(--shadow-medium);
}

.header.scrolled .dropdown-menu a {
    color: var(--text-primary);
}

.header.scrolled .dropdown-menu a:hover {
    background: var(--light-gray);
    color: var(--primary-color);
}

.header.scrolled .nav-toggle .bar {
    background: var(--text-primary);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0138a3 100%);
    color: var(--white);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-title {
    font-family: var(--font-family-heading);
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 600;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    font-weight: 300;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.hero-description {
    font-family: var(--font-family-body);
    font-size: clamp(16px, 2vw, 18px);
    font-weight: 400;
    color: var(--white);
    opacity: 0.9;
    position: relative;
    z-index: 1;
    margin-top: 24px;
    margin-bottom: 16px;
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-disclaimer {
    font-family: var(--font-family-body);
    font-size: clamp(14px, 1.5vw, 16px);
    font-weight: 300;
    color: var(--white);
    opacity: 0.8;
    position: relative;
    z-index: 1;
    margin-top: 8px;
    letter-spacing: 0.5px;
}

/* Partners Section */
.partners-section {
    padding: 80px 0;
    background: var(--light-gray);
    min-height: calc(100vh - 220px);
    display: flex;
    align-items: center;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 380px);
    gap: 20px;
    max-width: 2380px;
    margin: 0 auto;
    padding: 0 20px;
    justify-content: center;
}

/* 合作伙伴卡片 - 参考Snowflake设计 */
.partner-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.06);
    min-width: 380px;
    min-height: 420px;
    height: auto;
    display: flex;
    flex-direction: column;
}

.partner-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
    border-color: rgba(1, 76, 196, 0.2);
}

.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: relative;
    flex-grow: 1;
    min-height: 380px;
}

/* Logo容器 - 独立居中样式 */
.partner-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-bottom: 11px;
    flex-shrink: 0;
}

/* 内容容器 - 保持左对齐 */
.partner-content {
    display: flex;
    flex-direction: column;
    text-align: left;
    flex-grow: 1;
    position: relative;
    padding-bottom: 40px;
}

/* 合作伙伴图标 - 类似Snowflake的图标设计 */
.partner-icon {
    width: 214px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #0138a3 100%);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 11px;
    flex-shrink: 0;
}

.icon-text {
    color: var(--white);
    font-weight: 600;
    font-size: 24px;
    font-family: var(--font-family-heading);
}

/* 有logo的图标容器样式 - 完全独立的样式 */
.partner-icon-logo {
    background: none !important;
    border: none !important;
    border-radius: 0 !important;
    padding: 0 !important;
    margin-bottom: 11px !important;
    flex-shrink: 0 !important;
    /* 独立的flexbox容器 */
    width: 214px !important;
    height: 80px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    /* 重置所有可能的继承样式 */
    box-shadow: none !important;
    transform: none !important;
    position: relative !important;
}

/* 合作伙伴Logo图片样式 - 独立的大尺寸设置 */
.partner-logo {
    /* 大尺寸设置 - 适应长方形容器 */
    width: 201px !important;
    height: 72px !important;
    max-width: 201px !important;
    max-height: 72px !important;
    min-width: 134px !important;
    min-height: 47px !important;
    /* 居中和适配 */
    object-fit: contain !important;
    object-position: center center !important;
    display: block !important;
    /* 重置所有可能影响的样式 */
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
    /* 确保图片清晰 */
    image-rendering: -webkit-optimize-contrast !important;
    image-rendering: crisp-edges !important;
}

/* 合作伙伴名称 - 类似Snowflake的标题样式 */
.partner-name {
    font-family: var(--font-family-heading);
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
    line-height: 1.3;
    flex-shrink: 0;
}

/* 合作伙伴描述 */
.partner-description {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 40px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* 访问官网按钮 - 参考Snowflake的按钮设计 */
.visit-website-btn {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: #F3F4F6;
    color: var(--text-secondary);
    padding: 7px 14px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid #E5E7EB;
    margin-top: auto;
    align-self: flex-start;
}

.visit-website-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Partners Description Section */
.partners-description-section {
    background: var(--light-gray);
    padding: 40px 0;
    text-align: center;
}

.partners-description-text {
    font-family: var(--font-family-body);
    font-size: 18px;
    color: var(--text-primary);
    margin: 0;
    font-weight: 500;
    letter-spacing: 0.3px;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

/* Disclaimer Section */
.disclaimer-section {
    background: var(--light-gray);
    padding: 20px 0;
    text-align: center;
}

.disclaimer-text {
    font-family: var(--font-family-body);
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* Footer - 复用现有样式 */
.footer {
    background: var(--black);
    color: var(--white);
    padding: 60px 0 40px;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
}

.footer-left {
    flex: 1;
    max-width: 600px;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 24px;
    opacity: 1 !important;
}

.footer-mission {
    font-family: var(--font-family-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--white);
    max-width: 500px;
    margin-bottom: 32px;
    margin-top: 0;
}

.footer-contact {
    margin-top: 0;
}

.contact-title {
    font-family: var(--font-family-heading);
    font-size: 18px;
    font-weight: 500;
    color: var(--white);
    margin-bottom: 16px;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.contact-email {
    color: var(--white);
    font-family: var(--font-family-body);
    font-size: 16px;
    font-weight: 400;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-email:hover {
    color: #ccc;
    transform: translateY(-1px);
}

.contact-icon {
    width: 16px;
    height: 16px;
    filter: brightness(0) saturate(100%) invert(100%);
    opacity: 1 !important;
}

.linkedin-link {
    color: var(--white);
    font-family: var(--font-family-body);
    font-size: 16px;
    font-weight: 400;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.linkedin-link:hover {
    color: #ccc;
    transform: translateY(-1px);
}

.linkedin-icon {
    width: 16px;
    height: 16px;
    border-radius: 2px;
    background: #0077B5;
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    font-family: Arial, sans-serif;
}

.linkedin-icon::before {
    content: 'in';
}

.footer-right {
    flex: 0 0 auto;
    align-self: flex-start;
    margin-top: 74px;
}

.footer-nav {
    display: flex;
    justify-content: flex-end;
}

.footer-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-menu-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.footer-link {
    color: var(--white);
    font-family: var(--font-family-heading);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    display: block;
    margin-bottom: 8px;
}

.footer-link:hover {
    color: #ccc;
    transform: translateY(-2px);
}

.footer-submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: flex-end;
}

.footer-sublink {
    color: #ccc;
    font-family: var(--font-family-heading);
    text-decoration: none;
    font-size: 14px;
    font-weight: 300;
    transition: var(--transition);
    display: block;
}

.footer-sublink:hover {
    color: var(--white);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 2380px) {
    .partners-grid {
        grid-template-columns: repeat(6, 1fr);
        max-width: 1900px;
        gap: 18px;
    }
    
    .partner-card {
        min-width: 300px;
        min-height: 380px;
    }
}

@media (max-width: 1800px) {
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
        max-width: 1400px;
        gap: 20px;
    }
    
    .partner-card {
        min-width: 320px;
        min-height: 400px;
    }
}

@media (max-width: 1400px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 1050px;
        gap: 20px;
    }
    
    .partner-card {
        min-width: 320px;
        min-height: 420px;
    }
}

@media (max-width: 804px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 670px;
    }
}

@media (max-width: 603px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 11px;
    }
    
    .partner-card {
        min-height: 350px;
    }
    
    .partner-card:nth-child(13),
    .partner-card:nth-child(14) {
        grid-column: auto;
        margin: 0;
        width: 100%;
    }
    
    .partners-section {
        padding: 40px 0;
        min-height: auto;
    }
    
    .partner-content {
        padding-bottom: 35px;
    }
    
    .partner-description {
        margin-bottom: 35px;
    }
}

@media (max-width: 515px) {
    .nav-container {
        padding: 0 11px;
        height: 40px;
    }
    
    .nav-menu {
        gap: 13px;
    }
    
    .hero {
        padding: 80px 0 40px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 11px;
        padding: 0 11px;
    }
    
    .partner-card {
        min-height: 320px;
    }
    
    .card-content {
        padding: 13px;
        min-height: 280px;
    }
    
    .partner-content {
        padding-bottom: 30px;
    }
    
    .partner-name {
        font-size: 14px;
    }
    
    .partner-description {
        font-size: 10px;
        margin-bottom: 30px;
    }
    
    .visit-website-btn {
        bottom: 13px;
        left: 13px;
        padding: 6px 11px;
        font-size: 9px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 27px;
        text-align: center;
    }
    
    .footer-nav {
        justify-content: center;
    }
    
    .footer-menu {
        align-items: center;
    }
    
    .footer-menu-item {
        align-items: center;
    }
    
    .footer-submenu {
        align-items: center;
    }
    
    .contact-info {
        justify-content: center;
    }
}

@media (max-width: 322px) {
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 11px;
    }
    
    .hero-title {
        font-size: 19px;
    }
    
    .hero-subtitle {
        font-size: 11px;
    }
    
    .partners-section {
        padding: 27px 0;
    }
}

/* 高度相关的媒体查询 - 优化横屏和低高度屏幕 */
@media (max-height: 600px) {
    .hero {
        padding: 100px 0 60px;
    }
}

@media (max-height: 480px) {
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero-description {
        margin-top: 16px;
        margin-bottom: 12px;
    }
}

@media (max-height: 400px) {
    .hero {
        padding: 60px 0 30px;
    }
    
    .hero-title {
        margin-bottom: 12px;
    }
    
    .hero-description {
        margin-top: 12px;
        margin-bottom: 8px;
        line-height: 1.4;
    }
}

/* 极小屏幕优化 */
@media (max-width: 280px) {
    .hero-title {
        font-size: 16px;
    }
    
    .hero-description {
        font-size: 14px;
        line-height: 1.4;
        margin-top: 16px;
        margin-bottom: 12px;
    }
    
    .hero-disclaimer {
        font-size: 12px;
    }
    
    .hero .container {
        padding: 0 15px;
    }
}

/* 中等屏幕间距优化 */
@media (max-width: 768px) and (min-width: 516px) {
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-description {
        margin-top: 20px;
        margin-bottom: 12px;
    }
}

/* 小屏幕容器内边距优化 */
@media (max-width: 480px) {
    .hero .container {
        padding: 0 15px;
    }
}

/* 横屏模式特殊处理 */
@media (orientation: landscape) and (max-height: 500px) {
    .hero {
        padding: 70px 0 40px;
    }
    
    .hero-title {
        font-size: clamp(24px, 4vw, 48px);
        margin-bottom: 12px;
    }
    
    .hero-description {
        font-size: clamp(14px, 1.8vw, 16px);
        margin-top: 16px;
        margin-bottom: 10px;
    }
    
    .hero-disclaimer {
        font-size: clamp(12px, 1.4vw, 14px);
    }
}

/* 页面加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.partner-card {
    animation: fadeInUp 0.6s ease forwards;
}

.partner-card:nth-child(1) { animation-delay: 0.1s; }
.partner-card:nth-child(2) { animation-delay: 0.15s; }
.partner-card:nth-child(3) { animation-delay: 0.2s; }
.partner-card:nth-child(4) { animation-delay: 0.25s; }
.partner-card:nth-child(5) { animation-delay: 0.3s; }
.partner-card:nth-child(6) { animation-delay: 0.35s; }
.partner-card:nth-child(7) { animation-delay: 0.4s; }
.partner-card:nth-child(8) { animation-delay: 0.45s; }
.partner-card:nth-child(9) { animation-delay: 0.5s; }
.partner-card:nth-child(10) { animation-delay: 0.55s; }
.partner-card:nth-child(11) { animation-delay: 0.6s; }
.partner-card:nth-child(12) { animation-delay: 0.65s; }
.partner-card:nth-child(13) { animation-delay: 0.7s; }
.partner-card:nth-child(14) { animation-delay: 0.75s; }

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}