/* 基础设置 */
:root {
    --primary-color: #58C28D;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --bg-light: #f4f7f6;
    --text-color: #333;
    --text-light: #777;
    --white: #ffffff;
    --container-width: 1100px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.container .logo{
    display: flex;
    align-items: center;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 10px auto 0;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

.btn-secondary:hover {
    background-color: transparent;
    color: var(--secondary-color);
}

/* 导航栏 */
header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
}

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

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

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 英雄区 (Hero) */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
}

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

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.btn-container {
    position: relative;
    display: inline-block;
}

.qr-code {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    display: none;
    z-index: 100;
    text-align: center;
    width: 320px;
}

.qr-code img {
    width: 130px;
    height: 130px;
    display: block;
    margin-bottom: 8px;
    box-shadow: none; /* 覆盖全局图片阴影 */
    border-radius: 0;
}

.qr-code span {
    font-size: 0.85rem;
    color: #666;
    display: block;
}

.btn-container:hover .qr-code {
    display: flex;
    flex-direction: row;
    animation: fadeIn 0.3s ease;
    justify-content: space-between;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(0); }
    to { opacity: 1; transform: translateX(-50%) translateY(10px); }
}

.hero-btns .btn {
    margin-right: 0;
    margin-bottom: 0;
}

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

.hero-image img {
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    height: 500px;
}

/* 功能特性 (Features) */
.features {
    padding: 100px 0;
}

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

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.feature-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
}

/* 服务信息 (Services) */
.services {
    padding: 100px 0;
}

.service-item {
    display: flex;
    align-items: center;
    margin-bottom: 80px;
}

.service-item.reverse {
    flex-direction: row-reverse;
}

.service-info {
    flex: 1;
    padding: 0 40px;
}

.service-info h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.service-info ul {
    margin-top: 20px;
}

.service-info ul li {
    margin-bottom: 10px;
}

.service-info ul li i {
    color: #27ae60;
    margin-right: 10px;
}

/* 应用详情 (Details) */
.details {
    padding: 100px 0;
}

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

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

.details-text h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.details-text p {
    margin-bottom: 20px;
    color: var(--text-light);
}

/* 底部 (Footer) */
footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 80px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-about h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.footer-links h4, .footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

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

.footer-links a {
    color: #ccc;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-contact p {
    margin-bottom: 10px;
    color: #ccc;
}

.footer-contact i {
    margin-right: 10px;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content, .details-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .service-item, .service-item.reverse {
        flex-direction: column;
        text-align: center;
    }
    
    .service-info {
        padding: 20px 0;
    }
}