/* 吐司智能官网样式 */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #0ea5e9;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
    --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #0ea5e9 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.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(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 110px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo img {
    max-height: 90px;
    width: auto;
    object-fit: contain;
}

/* 页脚中的LOGO */
.footer-brand .logo img {
    max-height: 72px;
}

/* 响应式LOGO尺寸 */
@media (max-width: 768px) {
    .logo img {
        max-height: 65px;
    }
    
    .footer-brand .logo img {
        max-height: 50px;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

.nav-cta {
    background: var(--gradient-primary);
    color: white;
    padding: 10px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Hero 区域 */
.hero {
    padding: 170px 0 80px;
    background: var(--gradient-hero);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* 页面标题区域 */
.page-header {
    padding: 170px 0 60px;
    background: var(--gradient-hero);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 区块标题 */
.section {
    padding: 80px 0;
}

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

.section-tag {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 16px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

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

/* 产品卡片 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.product-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.product-card p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 20px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-features span {
    background: var(--bg-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-light);
}

/* 特性列表 */
.features-list {
    display: grid;
    gap: 20px;
}

.feature-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: white;
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-content p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.6;
}

/* 核心价值 */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.value-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-white);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.value-number {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.value-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* 技术优势 */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.tech-card {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.tech-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.tech-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    flex-shrink: 0;
}

.tech-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.tech-content p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.6;
}

/* 子产品模块 */
.sub-products {
    display: grid;
    gap: 40px;
}

.sub-product {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border-color);
}

.sub-product-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.sub-product-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.sub-product-header h3 {
    font-size: 24px;
    font-weight: 600;
}

.sub-product-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.sub-feature {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: 10px;
}

.sub-feature-icon {
    width: 32px;
    height: 32px;
    background: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 14px;
    flex-shrink: 0;
}

.sub-feature h5 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.sub-feature p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
}

/* 关于我们 */
.about-section {
    background: var(--bg-light);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.mission {
    background: var(--gradient-primary);
    color: white;
    padding: 40px;
    border-radius: 16px;
    margin-top: 40px;
}

.mission h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.mission p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 18px;
    margin-bottom: 0;
}

/* 联系信息 */
.contact-section {
    background: var(--text-dark);
    color: white;
}

.contact-section .section-title {
    color: white;
}

.contact-section .section-desc {
    color: rgba(255, 255, 255, 0.7);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    text-align: center;
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 24px;
}

.contact-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-card p {
    color: rgba(255, 255, 255, 0.7);
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    margin-top: 16px;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .sub-product-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        height: 75px;
    }
    
    .hero {
        padding: 115px 0 50px;
    }
    
    .hero h1 {
        font-size: 24px;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 14px;
        padding: 0 10px;
    }
    
    .hero-badge {
        font-size: 12px;
        padding: 6px 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .section-desc {
        font-size: 14px;
        padding: 0 10px;
    }
    
    .page-header {
        padding: 115px 0 40px;
    }
    
    .page-header h1 {
        font-size: 26px;
    }
    
    .page-header p {
        font-size: 14px;
        padding: 0 15px;
    }
    
    .products-grid,
    .values-grid,
    .tech-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .product-card {
        padding: 24px;
    }
    
    .product-card h3 {
        font-size: 18px;
    }
    
    .product-card p {
        font-size: 14px;
    }
    
    .feature-item {
        flex-direction: column;
        padding: 20px;
    }
    
    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .feature-content h4 {
        font-size: 16px;
    }
    
    .feature-content p {
        font-size: 13px;
    }
    
    .value-card {
        padding: 30px 20px;
    }
    
    .value-number {
        font-size: 36px;
    }
    
    .value-card h4 {
        font-size: 16px;
    }
    
    .value-card p {
        font-size: 13px;
    }
    
    .tech-card {
        flex-direction: column;
        padding: 20px;
    }
    
    .tech-number {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .tech-content h4 {
        font-size: 16px;
    }
    
    .tech-content p {
        font-size: 13px;
    }
    
    .sub-product {
        padding: 20px;
    }
    
    .sub-product-header {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    
    .sub-product-header h3 {
        font-size: 18px;
    }
    
    .sub-product-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .sub-feature {
        padding: 14px;
    }
    
    .sub-feature h5 {
        font-size: 14px;
    }
    
    .sub-feature p {
        font-size: 12px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-brand p {
        font-size: 14px;
    }
    
    .contact-card {
        padding: 24px 20px;
    }
    
    .contact-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .container {
        padding: 0 15px;
    }
}

/* 超小屏幕适配 */
@media (max-width: 375px) {
    .hero h1 {
        font-size: 22px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .product-features {
        flex-wrap: wrap;
    }
    
    .product-features span {
        font-size: 11px;
        padding: 3px 8px;
    }
}

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

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

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}