/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #007AFF;
    --secondary-color: #34C759;
    --accent-color: #FF9500;
    --danger-color: #FF3B30;
    --purple-color: #5856D6;
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --background: #FFFFFF;
    --background-secondary: #F5F5F7;
    --border-color: #D2D2D7;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    font-feature-settings: 'tnum' 1, 'lnum' 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    margin: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.nav-buttons {
    display: flex;
    gap: 12px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: #0051D5;
    box-shadow: var(--shadow-hover);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* 主要内容 */
main {
    padding-top: 64px;
}

/* 英雄区域 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #007AFF10 0%, #34C75910 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23007AFF" fill-opacity="0.03"><path d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/></g></g></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 10px;
}

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

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

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

/* 仪表板预览 */
.dashboard-preview {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.preview-header {
    background: var(--background-secondary);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.preview-dots {
    display: flex;
    gap: 8px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
}

.preview-dots span:nth-child(1) { background: #FF3B30; }
.preview-dots span:nth-child(2) { background: #FF9500; }
.preview-dots span:nth-child(3) { background: #34C759; }

.preview-content {
    padding: 30px;
}

.preview-stats {
    display: flex;
    gap: 30px;
    margin-top: 20px;
}

.preview-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-name {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 产品区域 */
.products {
    padding: 100px 0;
    background: var(--background);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.product-header {
    margin-bottom: 24px;
}

.product-name {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.product-description {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    margin: 24px 0;
    padding: 0;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.product-features li::before {
    content: '✓';
    color: var(--secondary-color);
    font-weight: 600;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color)20;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.product-price {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.product-button {
    width: 100%;
}

.product-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
}

.check-icon {
    color: #34C759;
    font-weight: 700;
    margin-right: 4px;
}

.more-features {
    color: #999;
    font-style: italic;
    font-size: 14px;
}

.product-price-sales {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 12px 0;
    border-top: 1px dashed #eee;
    border-bottom: 1px dashed #eee;
}

.product-sales {
    background: #f5f5f5;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    color: #666;
}

.product-button {
    background: linear-gradient(135deg, #007AFF, #0056CC);
    color: #fff !important;
    border: none;
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-button:hover {
    background: linear-gradient(135deg, #0056CC, #004499);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.4);
}

/* 功能特色 */
.features {
    padding: 100px 0;
    background: var(--background-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.feature-icon {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

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

/* 关于我们 */
.about {
    padding: 100px 0;
    background: var(--background);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.about-text p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.about-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.team-illustration {
    background: var(--background-secondary);
    border-radius: 20px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--background-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-top: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.contact-text p {
    color: var(--text-secondary);
    font-size: 14px;
}

.contact-form {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    font-weight: 600;
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-logo svg {
    display: none;
}

.footer-logo > span:first-of-type {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 4px;
}

.footer-contact i {
    font-size: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-link-group h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-link-group a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-link-group a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: var(--transition);
}

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

/* 汉堡菜单样式 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    padding: 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    z-index: 1001;
}

.hamburger:hover {
    background: var(--background-secondary);
}

.hamburger .bar {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* 汉堡菜单打开状态 */
.hamburger.open .bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.open .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.open .bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动菜单样式 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    margin: 0;
    transition: var(--transition);
}

/* 移动菜单打开状态 */
.nav-menu.mobile-open {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    gap: 0;
    padding: 20px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-menu.mobile-open li {
    padding: 0 20px;
}

.nav-menu.mobile-open .nav-link {
    display: block;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 16px;
}

.nav-menu.mobile-open .nav-link:last-child {
    border-bottom: none;
}

/* 移动端导航按钮 - 默认隐藏 */
.mobile-nav-buttons {
    display: none !important;
    gap: 8px;
    padding: 8px 0;
    margin-left: auto;
    flex-shrink: 0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    /* 平板设备上调整导航按钮间距 */
    .nav-buttons {
        gap: 8px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    /* 显示汉堡菜单 */
    .hamburger {
        display: flex;
    }
    
    /* 隐藏桌面导航菜单 */
    .nav-menu {
        display: none;
    }
    
    /* 移动设备导航栏样式 */
    .nav-container {
        padding: 0 16px;
        flex-wrap: nowrap;
        overflow: hidden;
    }
    
    /* 隐藏桌面导航按钮 */
    .nav-buttons {
        display: none;
    }
    
    /* 显示移动导航按钮 */
    .mobile-nav-buttons {
        display: flex !important;
        margin-left: auto;
        gap: 8px;
    }
    
    /* 调整移动导航按钮样式 */
    .mobile-nav-buttons .btn {
        padding: 8px 12px;
        font-size: 12px;
        white-space: nowrap;
    }
    
    /* 英雄区域样式调整 */
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .btn-large {
        width: 100%;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    /* 产品和功能网格调整 */
    .products-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    /* 产品卡片和功能卡片样式调整 */
    .product-card,
    .feature-card {
        padding: 24px;
    }
    
    /* 关于我们页面样式调整 */
    .about-stats,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-logo {
        align-items: flex-start;
    }
    
    .footer-contact {
        font-size: 13px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    /* 联系表单样式调整 */
    .contact-content {
        gap: 40px;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    /* 移动端导航链接样式 */
    .nav-link {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    /* 超小屏幕设备样式调整 */
    .container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .products,
    .features,
    .about,
    .contact {
        padding: 40px 0;
    }
    
    .product-card,
    .feature-card,
    .contact-form {
        padding: 20px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .products,
    .features,
    .about,
    .contact {
        padding: 60px 0;
    }
    
    .product-card,
    .feature-card,
    .contact-form {
        padding: 24px;
    }
}

/* 悬浮客服图标 */
.floating-support {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.floating-support a {
    display: inline-block;
    width: 60px;
    height: 60px;
    background-color: #07C160;
    border-radius: 50%;
    text-align: center;
    line-height: 60px;
    color: white;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    text-decoration: none;
}

.floating-support a:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
    background-color: #06ad56;
}

.floating-support .support-text {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background-color: #07C160;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    opacity: 1;
    transition: all 0.3s ease;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.floating-support:hover .support-text {
    right: 80px;
    background-color: #06ad56;
    transform: translateY(-50%) scale(1.05);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .floating-support {
        bottom: 1rem;
        right: 1rem;
    }
    
    .floating-support a {
        width: 50px;
        height: 50px;
        font-size: 20px;
        line-height: 50px;
    }
    
    .floating-support .support-text {
        right: 60px;
        font-size: 12px;
    }
    
    .floating-support:hover .support-text {
        right: 65px;
        transform: translateY(-50%) scale(1.05);
    }
}