/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 渐变绿色主题 */
    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-200: #bbf7d0;
    --green-300: #86efac;
    --green-400: #4ade80;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --green-700: #15803d;
    --green-800: #166534;
    --green-900: #14532d;
    
    /* 渐变 */
    --gradient-green-light: linear-gradient(135deg, #86efac 0%, #4ade80 100%);
    --gradient-green-medium: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    --gradient-green-dark: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    --gradient-green-soft: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
    
    /* 主色调 */
    --primary-color: #16a34a;
    --secondary-color: #22c55e;
    --accent-color: #4ade80;
    --text-dark: #14532d;
    --text-light: #166534;
    --bg-light: #f0fdf4;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 5px 20px rgba(0,0,0,0.15);
    --shadow-green: 0 4px 15px rgba(34, 197, 94, 0.3);
}

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

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

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(34, 197, 94, 0.1);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 1.8rem;
    background: var(--gradient-green-dark);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.2rem;
}

.logo p {
    font-size: 0.7rem;
    color: var(--text-light);
    font-style: italic;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.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.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-green-medium);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* 语言切换按钮 */
.lang-toggle,
.lang-toggle-btn {
    background: rgba(34, 197, 94, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-left: 10px;
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.1);
}

.lang-toggle:hover,
.lang-toggle-btn:hover {
    background: rgba(34, 197, 94, 0.25);
    border-color: rgba(34, 197, 94, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.2);
}

.lang-toggle:active,
.lang-toggle-btn:active {
    transform: translateY(0);
}

.lang-switcher-desktop {
    margin-left: 2rem;
}

.mobile-lang-switcher {
    display: none;
    margin-top: 1rem;
    text-align: center;
}

@media (max-width: 768px) {
    .lang-switcher-desktop {
        display: none;
    }
    .mobile-lang-switcher {
        display: block;
    }
    .lang-toggle-btn {
        margin-left: 0;
    }
}

/* 按钮样式 - 玻璃态效果 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: rgba(34, 197, 94, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(34, 197, 94, 0.2);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-green-medium);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-primary:hover {
    background: rgba(34, 197, 94, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(34, 197, 94, 0.4);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-primary:hover::before {
    left: 0;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--primary-color);
    border: 2px solid rgba(34, 197, 94, 0.3);
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.1);
}

.btn-outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-green-soft);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-outline:hover {
    background: rgba(34, 197, 94, 0.15);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.2);
}

.btn-outline:hover::before {
    left: 0;
}

/* 轮播图 */
.hero-slider {
    position: relative;
    height: 600px;
    margin-top: 80px;
    overflow: hidden;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(20, 83, 45, 0.1), rgba(22, 101, 52, 0.2));
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    z-index: 10;
}

.slide-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.slide-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.slider-controls {
    display: none;
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 20;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(5px);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: rgba(255, 255, 255, 0.9);
    width: 30px;
    border-radius: 6px;
}

/* 服务介绍 */
.services-intro {
    padding: 80px 0;
    background: var(--gradient-green-soft);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    background: var(--gradient-green-dark);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

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

.service-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(34, 197, 94, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(34, 197, 94, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(34, 197, 94, 0.2);
    background: rgba(255, 255, 255, 0.95);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-green-medium);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* 活动预览 */
.activities-preview {
    padding: 80px 0;
    background: var(--white);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.activity-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 300px;
}

.activity-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(34, 197, 94, 0.2);
}

.activity-image {
    width: 100%;
    height: 70%;
    background-size: cover;
    background-position: center;
}

.activity-content {
    padding: 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    height: 30%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.activity-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.activity-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

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

/* 关于我们预览 */
.about-preview {
    padding: 80px 0;
    background: var(--gradient-green-soft);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    background: var(--gradient-green-dark);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(34, 197, 94, 0.2);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #14532d 0%, #166534 100%);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-section i {
    margin-right: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-lg);
    }

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

    .nav-menu li {
        margin-bottom: 1rem;
    }

    .nav-menu li:last-child {
        margin-top: 10px;
        padding-top: 10px;
        border-top: 1px solid rgba(34, 197, 94, 0.1);
    }

    .lang-toggle {
        width: 100%;
        margin-left: 0;
        text-align: center;
    }

    .hero-slider {
        height: 400px;
        margin-top: 70px;
    }

    .slide-content h2 {
        font-size: 2rem;
    }

    .slide-content p {
        font-size: 1.2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

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

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

    .about-image {
        order: -1;
    }

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

@media (max-width: 480px) {
    .hero-slider {
        height: 300px;
    }

    .slide-content h2 {
        font-size: 1.5rem;
    }

    .slide-content p {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}