/* Global Styles */
:root {
    --primary-color: #2a5c45;
    --secondary-color: #5a8f7b;
    --accent-color: #f5b048;
    --light-color: #f5f5f5;
    --dark-color: #333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #f9f9f9;
    color: var(--dark-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header Styles */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--primary-color);
    letter-spacing: 2px;
    white-space: nowrap;
}

.logo a {
    text-decoration: none;
    color: inherit;
}

.logo span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: color 0.3s;
    white-space: nowrap;
}

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

/* 语言切换按钮样式 */
.language-switch {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-left: 15px;
    padding: 5px 10px;
    border-radius: 20px;
    background-color: var(--light-color);
    transition: background-color 0.3s;
}

.language-switch:hover {
    background-color: #e8e8e8;
}

.language-switch i {
    margin-right: 5px;
    color: var(--primary-color);
}

.cta-button {
    background-color: var(--accent-color);
    color: white;
    padding: 10px 10px;
    border-radius: 30px;
    font-weight: bold;
    transition: background-color 0.3s;
    display: inline-block;
    text-align: center;
    text-decoration: none;
}

.cta-button:hover {
    background-color: #e09728;
    color: white;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary-color);
    cursor: pointer;
}

.mobile-top-button {
    display: none;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: white;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    z-index: 99;
    padding: 20px;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-links {
    list-style: none;
}

.mobile-menu-links li {
    margin-bottom: 15px;
}

.mobile-menu-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-size: 18px;
    display: block;
    padding: 10px 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://images.unsplash.com/photo-1566073771259-6a8506099945?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    height: 80vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 20px;
}

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

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    letter-spacing: 3px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

/* Section Styles */
section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 40px;
    font-size: 36px;
    color: var(--primary-color);
    letter-spacing: 3px;
}

.section-title span {
    color: var(--accent-color);
}

/* Why Section */
.why-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.why-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.why-card:hover {
    transform: translateY(-10px);
}

.why-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 22px;
}

/* Concept Section */
.concept {
    background-color: var(--light-color);
}

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

.concept-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

.concept-text h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 32px;
}

/* Environmental Promise */
.promise {
    background-color: var(--primary-color);
    color: white;
}

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

.promise-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    text-align: center;
}

.promise-item {
    padding: 30px;
}

.promise-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

/* How It Works */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step {
    text-align: center;
    padding: 30px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

/* Properties Section */
.properties {
    background-color: var(--light-color);
}

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

.property-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.property-image {
    height: 200px;
    overflow: hidden;
}

.property-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.property-card:hover .property-image img {
    transform: scale(1.1);
}

.property-info {
    padding: 20px;
}

.property-info h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    text-align: center;
    margin-bottom: 2rem;
}

.team-photo {
    width: 200px;
    height: 200px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    overflow: hidden;
}

.team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h3 {
    margin: 0.5rem 0;
    font-size: 1.2rem;
    color: #333;
}

.team-member p {
    color: #666;
    font-size: 0.9rem;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 20px;
}

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

.footer-column h3 {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 18px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    color: white;
    font-size: 20px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #aaa;
    font-size: 14px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 42px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .concept-text h2 {
        font-size: 28px;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid > div:nth-child(n+5) {
        grid-column: auto;
    }
    
    .team-grid > div:nth-child(5),
    .team-grid > div:nth-child(6),
    .team-grid > div:nth-child(7) {
        grid-column: auto;
    }
}

@media (max-width: 768px) {
    .cta-button{
        font-size: smaller;
    }
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }

    .mobile-top-button {
        display: flex;
        flex-direction: row;
        justify-content: center;
    }
    
    .hero {
        height: 70vh;
        min-height: 400px;
    }
    
    .hero h1 {
        font-size: 36px;
        letter-spacing: 2px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .concept-content {
        grid-template-columns: 1fr;
    }
    
    .concept-image {
        order: -1;
        margin-bottom: 30px;
    }
    
    .promise-container {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .why-card, .step, .property-card {
        padding: 20px;
    }
    
    .team-photo {
        width: 180px;
        height: 180px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 24px;
    }
    
    .hero h1 {
        font-size: 28px;
        letter-spacing: 1px;
    }
    
    .hero p {
        font-size: 15px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .concept-text h2 {
        font-size: 22px;
    }
    
    .why-container, .property-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-column {
        margin-bottom: 30px;
    }
}

@media (max-width: 640px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* 去除移动设备上的点击高亮效果 */
a, 
button,
.logo a, 
.nav-links a,
.cta-button,
.mobile-top-button a,
.language-switch,
.hero-cta .cta-button,
.property-card a,
.team-member a,
.social-icon,
.mobile-menu-links a {
    -webkit-tap-highlight-color: transparent;
    tap-highlight-color: transparent;
    user-select: none;
    outline: none;
}

/* 额外确保iOS上的按钮无高亮 */
a:active, 
button:active,
.logo a:active, 
.mobile-top-button a:active,
.cta-button:active,
.language-switch:active {
    background-color: transparent !important;
}