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

/* 根变量定义 */
:root {
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --accent-color: #FF9800;
    --success-color: #8BC34A;
    --warning-color: #FFC107;
    --error-color: #F44336;
    
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F5F5;
    --bg-accent: #E8F5E8;
    
    --border-color: #E0E0E0;
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.2);
    
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 20px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    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;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-logo i {
    margin-right: 8px;
    font-size: 28px;
}

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

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

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

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

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

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* 英雄区域样式 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-accent) 0%, var(--bg-primary) 100%);
    padding-top: 70px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

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

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.tea-cup-animation {
    font-size: 120px;
    color: var(--primary-color);
    animation: float 3s ease-in-out infinite;
}

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

/* 特色功能区域 */
.features {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-primary);
    padding: 40px 30px;
    border-radius: var(--border-radius-large);
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

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

/* 地图查询区域 */
.maps-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.maps-container {
    max-width: 1000px;
    margin: 0 auto;
}

.map-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.map-tab {
    padding: 16px 32px;
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.map-content {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-large);
    padding: 40px;
    margin-bottom: 30px;
    min-height: 400px;
}

.map-area {
    display: none;
}

.map-area.active {
    display: block;
}

.map-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.map-placeholder i {
    font-size: 64px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.map-placeholder h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.map-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.province,
.region {
    padding: 15px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.province:hover,
.region:hover {
    border-color: var(--primary-color);
    background: var(--bg-accent);
    transform: translateY(-2px);
}

.map-info {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 30px;
}

.map-details h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

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

/* 茶叶指南区域 */
.tea-guide {
    padding: 80px 0;
    background: var(--bg-accent);
}

.tea-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.tea-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.tea-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.tea-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.tea-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(76, 175, 80, 0.3), rgba(33, 150, 243, 0.3));
}

.green-tea {
    background-image: linear-gradient(45deg, #4CAF50, #8BC34A);
}

.black-tea {
    background-image: linear-gradient(45deg, #795548, #A1887F);
}

.oolong-tea {
    background-image: linear-gradient(45deg, #FF9800, #FFC107);
}

.white-tea {
    background-image: linear-gradient(45deg, #E0E0E0, #F5F5F5);
}

.tea-content {
    padding: 30px;
}

.tea-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.tea-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.tea-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.benefit-tag {
    padding: 6px 12px;
    background: var(--bg-accent);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* 咖啡指南样式 */
.coffee-guide {
    padding: 80px 0;
    background: linear-gradient(135deg, #F5F5F5 0%, #FFFFFF 100%);
}

.coffee-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.coffee-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.coffee-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.coffee-image {
    height: 200px;
    background: linear-gradient(135deg, #8B4513 0%, #D2691E 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.coffee-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(139, 69, 19, 0.8) 0%, rgba(210, 105, 30, 0.8) 100%);
    opacity: 0.8;
}

.coffee-image i {
    font-size: 48px;
    color: white;
    z-index: 1;
    position: relative;
}

.arabica {
    background: linear-gradient(135deg, #8B4513 0%, #D2691E 100%);
}

.robusta {
    background: linear-gradient(135deg, #654321 0%, #8B4513 100%);
}

.espresso {
    background: linear-gradient(135deg, #2F1B14 0%, #654321 100%);
}

.latte {
    background: linear-gradient(135deg, #D2691E 0%, #F4A460 100%);
}

.coffee-content {
    padding: 24px;
}

.coffee-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.coffee-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.coffee-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.coffee-origins {
    margin-top: 60px;
}

.coffee-origins h3 {
    text-align: center;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 40px;
    color: var(--text-primary);
}

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

.origin-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.origin-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #8B4513 0%, #D2691E 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.origin-icon i {
    font-size: 32px;
    color: white;
}

.origin-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

/* 故事区域 */
.stories-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.story-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.story-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.story-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.story-image i {
    font-size: 48px;
    color: white;
}

.story-content {
    padding: 30px;
}

.story-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.story-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.story-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--text-light);
}

.story-category {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
}

.ai-generator {
    text-align: center;
    background: var(--bg-accent);
    padding: 40px;
    border-radius: var(--border-radius-large);
}

.ai-generator h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.ai-generator p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* 关于我们区域 */
.about-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

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

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

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

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-section p,
.footer-section a {
    color: #CCCCCC;
    text-decoration: none;
    margin-bottom: 10px;
    display: block;
    transition: var(--transition);
}

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

.footer-section i {
    margin-right: 8px;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    color: #CCCCCC;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

    .map-tabs {
        flex-direction: column;
        align-items: center;
    }

    .map-content {
        padding: 20px;
    }

    .tea-categories {
        grid-template-columns: 1fr;
    }

    .coffee-categories {
        grid-template-columns: 1fr;
    }

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

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

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .feature-card,
    .tea-card,
    .story-card {
        padding: 20px;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: #45a049;
}