/* 官网样式 - 约餐App */
:root {
    --primary-color: #9c27b0;
    --secondary-color: #673ab7;
    --accent-color: #e040fb;
    --dark-color: #2C3E50;
    --light-color: #ECF0F1;
    --gradient-primary: linear-gradient(135deg, #9c27b0 0%, #673ab7 100%);
    --gradient-secondary: linear-gradient(135deg, #9c27b0 0%, #e040fb 100%);
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.2);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.logo-icon {
    width: 48px;
    height: 48px;
    /* 移除背景渐变，让图片本身显示 */
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* 移除字体颜色设置 */
    /* font-size: 24px; */
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s ease, transform 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

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

.btn-primary-nav {
    background: var(--gradient-primary);
    color: white;
    padding: 10px 24px;
    border-radius: 25px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    background: white;
    padding: 1rem 0;
    margin-top: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

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

.mobile-menu-link {
    padding: 12px 24px;
    color: var(--dark-color);
    text-decoration: none;
    transition: background 0.3s ease;
}

.mobile-menu-link:hover {
    background: rgba(255, 107, 107, 0.1);
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.1) 0%, rgba(103, 58, 183, 0.1) 100%);
    z-index: 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.btn-hero-primary,
.btn-hero-secondary {
    padding: 14px 32px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(156, 39, 176, 0.4);
}

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

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.stat-number, .stats-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

/* Section通用 */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #666;
}

.contact-section .section-subtitle {
    color: white !important;
    opacity: 1 !important;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* 产品特色 */
.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(156, 39, 176, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-desc {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.5rem 0;
    color: #666;
}

.feature-list li i {
    color: var(--primary-color);
    margin-right: 0.75rem;
}

/* 拼餐文化 */
.culture-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.culture-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.culture-desc {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.culture-feature-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 16px;
    margin-bottom: 1rem;
}

.culture-feature-item i {
    font-size: 2.5rem;
}

/* 核心优势 */
.advantage-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.advantage-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid #f0f0f0;
}

.advantage-header i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.advantage-list {
    list-style: none;
}

.advantage-list li {
    padding: 1rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.advantage-list li i {
    color: var(--primary-color);
    margin-right: 1rem;
}

/* 合作模式 */
.partnership-section {
    background: var(--gradient-secondary);
}

.partnership-card {
    background: rgba(255,255,255,0.95);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.partnership-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.partnership-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
}

.partnership-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
}

/* 商家入驻 */
.merchant-process {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.process-step {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 240px;
}

.process-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.process-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.requirement-card {
    background: linear-gradient(135deg, rgba(255,107,107,0.05) 0%, rgba(78,205,196,0.05) 100%);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
}

.requirement-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.benefit-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
}

/* 成功案例 */
.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.case-image {
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-content {
    padding: 2rem;
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid #f0f0f0;
}

.case-stat .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* 联系我们 */
.contact-section {
    background: var(--gradient-secondary);
}

.contact-info {
    background: rgba(255,255,255,0.95);
    padding: 2.5rem;
    border-radius: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.contact-form {
    background: rgba(255,255,255,0.95);
    padding: 2.5rem;
    border-radius: 20px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-submit {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
}

/* 底部 */
.footer {
    background: #1a1a1a;
    color: rgba(255,255,255,0.8);
}

.footer-title {
    color: white;
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: rgba(255,255,255,0.6);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .process-step {
        min-width: 100%;
    }
}

.stats-section {
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.05) 0%, rgba(103, 58, 183, 0.05) 100%);
    padding: 5rem 0;
}