/* ================================
   萌动智管家官网样式表
   设计风格：简洁、大方、专业
   主色调：绿色系（来自logo）
   ================================ */

/* CSS变量定义 */
:root {
    --color-primary: #7CB342;
    --color-primary-dark: #689F38;
    --color-primary-light: #9CCC65;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-bg: #FFFFFF;
    --color-bg-light: #F9FAFB;
    --color-border: #E5E7EB;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    --border-radius: 8px;
    --transition: 0.3s ease;
}

/* 基础重置 */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* 容器 */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================================
   导航栏
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-text-light);
    font-size: 0.9rem;
    transition: color var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* ================================
   首屏 Hero
   ================================ */
.hero {
    padding: calc(64px + var(--spacing-xxl)) 0 var(--spacing-xxl);
    background: var(--color-bg-light);
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.hero-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.keyword-item {
    padding: var(--spacing-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: all var(--transition);
    cursor: pointer;
    text-align: center;
    min-width: 120px;
}

.keyword-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 8px rgba(124, 179, 66, 0.15);
    transform: translateY(-1px);
}

.keyword-main {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.keyword-subs {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.keyword-subs small {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-bg-light);
    padding: 2px 6px;
    border-radius: 4px;
    transition: color var(--transition);
}

.keyword-item:hover .keyword-subs small {
    color: var(--color-primary-dark);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

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

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

.hero-qrcode {
    flex-shrink: 0;
    text-align: center;
}

.hero-qrcode img {
    width: 180px;
    height: 180px;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xs);
}

.hero-qrcode p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ================================
   通用区块样式
   ================================ */
section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
}

/* ================================
   使用场景
   ================================ */
.scenarios {
    background: var(--color-bg);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.scenario-card {
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(124, 179, 66, 0.1), transparent);
    transition: left 0.6s;
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.scenario-card:hover::before {
    left: 100%;
}

.scenario-card:active {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.scenario-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.scenario-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.scenario-problem,
.scenario-solution {
    margin-bottom: var(--spacing-sm);
}

.scenario-problem strong,
.scenario-solution strong {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.scenario-problem p {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.scenario-solution p {
    color: var(--color-primary-dark);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ================================
   功能介绍
   ================================ */
.features {
    background: var(--color-bg-light);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.feature-group {
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.feature-group::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-group:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 20px rgba(124, 179, 66, 0.2);
    border-color: var(--color-primary);
}

.feature-group:hover::after {
    transform: scaleX(1);
}

.feature-group:active {
    transform: translateY(-1px) scale(1.01);
}

.feature-group h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary-light);
}

.feature-list li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-light);
    font-size: 0.95rem;
    position: relative;
    padding-left: var(--spacing-md);
}

.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ================================
   版本动态
   ================================ */
.updates {
    background: var(--color-bg);
}

.update-list {
    max-width: 800px;
    margin: 0 auto;
}

.update-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
}

.update-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    transition: width 0.4s ease;
}

.update-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(124, 179, 66, 0.15);
    border-color: var(--color-primary-light);
}

.update-item:hover::before {
    width: 4px;
}

.update-item:active {
    transform: translateX(5px);
}

.update-version {
    flex-shrink: 0;
    text-align: center;
}

.version-tag {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-primary);
    color: white;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.version-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.update-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.update-content ul {
    list-style: disc;
    padding-left: var(--spacing-md);
}

.update-content li {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

/* ================================
   招商合作
   ================================ */
.contact {
    background: var(--color-bg-light);
}

.contact-content {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.contact-info {
    flex: 1;
}

.contact-intro {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.contact-label {
    font-weight: 500;
    color: var(--color-text);
    min-width: 80px;
}

.contact-value {
    color: var(--color-text-light);
}

.contact-qrcode {
    flex-shrink: 0;
    text-align: center;
}

.contact-qrcode img {
    width: 150px;
    height: 150px;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xs);
}

.contact-qrcode p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ================================
   页脚
   ================================ */
.footer {
    background: var(--color-text);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary-light);
}

.footer-brand p {
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

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

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

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.icp {
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
}

/* ================================
   响应式设计
   ================================ */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-keywords {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .scenario-grid,
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .contact-item {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        gap: 0;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-links li:last-child {
        border-bottom: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .scenario-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .update-item {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xxl: 3rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .hero-qrcode img {
        width: 150px;
        height: 150px;
    }
}