/* 里昂生态环保投资 - 主样式文件 */

/* ===== CSS变量与主题 ===== */
:root {
    --primary-color: #1a5f3c;
    --primary-light: #2d8a5a;
    --primary-dark: #0d3d24;
    --secondary-color: #c8a45a;
    --secondary-light: #e0bd74;
    --accent-color: #3d9970;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-light: #ffffff;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #1a2a22;
    --gradient-primary: linear-gradient(135deg, #1a5f3c 0%, #2d8a5a 50%, #3d9970 100%);
    --gradient-hero: linear-gradient(180deg, rgba(26, 42, 34, 0.85) 0%, rgba(26, 95, 60, 0.7) 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.95) 0%, rgba(248,249,250,0.9) 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
    --shadow-glow: 0 0 40px rgba(45, 138, 90, 0.3);
    --border-radius: 12px;
    --border-radius-lg: 24px;
    --transition: all 0.3s ease;
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ===== 重置与基础样式 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* ===== 加载动画 ===== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: var(--text-light);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: var(--text-light);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    background: transparent;
}

.header.scrolled {
    background: rgba(26, 42, 34, 0.95);
    backdrop-filter: blur(10px);
    padding: 16px 40px;
    box-shadow: var(--shadow-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

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

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

/* ===== 英雄区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: url('../images/factory-bg.png') center/cover no-repeat fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-light);
    padding: 40px;
    max-width: 900px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-slogan {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 300;
    margin-bottom: 48px;
    opacity: 0.95;
    letter-spacing: 0.15em;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 48px;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

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

.stat-value {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--secondary-light);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.85;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-cta {
    display: inline-block;
    padding: 16px 48px;
    background: var(--secondary-color);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    transition: var(--transition);
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.hero-cta:hover {
    background: var(--secondary-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

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

/* ===== 通用区块样式 ===== */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    color: var(--primary-dark);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* ===== 公司简介 ===== */
.about-section {
    background: var(--bg-secondary);
}

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

.about-text {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-secondary);
}

.about-text p {
    margin-bottom: 20px;
}

.about-highlights {
    display: grid;
    gap: 24px;
}

.highlight-item {
    background: var(--gradient-card);
    padding: 28px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(45, 138, 90, 0.1);
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.highlight-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.highlight-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.highlight-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ===== 创始人团队 ===== */
.founders-section {
    background: var(--bg-primary);
}

.founders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 40px;
}

.founder-card {
    display: flex;
    gap: 28px;
    background: var(--gradient-card);
    padding: 36px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid rgba(45, 138, 90, 0.08);
}

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

.founder-avatar {
    flex-shrink: 0;
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-light);
    box-shadow: var(--shadow-sm);
}

.founder-info {
    flex: 1;
}

.founder-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.founder-position {
    font-size: 1.1rem;
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: 16px;
}

.founder-details {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding: 12px;
    background: rgba(45, 138, 90, 0.05);
    border-radius: 8px;
}

.founder-details p {
    margin-bottom: 6px;
}

.founder-details p:last-child {
    margin-bottom: 0;
}

.founder-bio {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* ===== 主营业务 ===== */
.business-section {
    background: var(--bg-dark);
    color: var(--text-light);
}

.business-section .section-title {
    color: var(--text-light);
}

.business-section .section-title::after {
    background: var(--secondary-color);
}

.business-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.business-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.1);
}

.business-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-8px);
    border-color: var(--secondary-color);
}

.business-icon {
    font-size: 3.5rem;
    margin-bottom: 24px;
}

.business-card h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--secondary-light);
}

.business-card p {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.85;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--primary-dark);
    color: var(--text-light);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 1.1rem;
}

.footer-text {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .founders-grid {
        grid-template-columns: 1fr;
    }
    
    .founder-card {
        flex-direction: column;
        text-align: center;
    }
    
    .founder-avatar {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 16px 20px;
    }
    
    .nav {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 20px;
    }
    
    .founder-card {
        padding: 24px;
    }
    
    .business-card {
        padding: 28px;
    }
}