/* 全局样式 */
:root {
    --primary-color: #2c82e0;
    --secondary-color: #f5f7fa;
    --text-color: #333;
    --light-text: #666;
    --border-color: #e5e7eb;
    --btn-bg: #2c82e0;
    --btn-hover: #1e6fd1;
    --mobile-menu-bg: #fff;
    --accordion-bg: #fff;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --gradient-bg: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    --transition: all 0.3s ease;
}

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

body {
    font-family: "Microsoft Yahei", "PingFang SC", sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #f9fafb;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 文字对齐：全局标题居中，段落左对齐 */
h1, h2, h3, h4, h5, h6, .section-title {
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

p {
    text-align: left;
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--btn-hover);
}

/* 页头样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 999;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* 桌面端导航 */
.nav-desktop ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-desktop a {
    font-size: 1rem;
    color: var(--text-color);
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-desktop a:hover {
    border-bottom: 2px solid var(--primary-color);
    color: var(--primary-color);
}

/* 汉堡按钮 */
.hamburger-btn {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
}

.hamburger-icon, .close-icon {
    width: 30px;
    height: 30px;
}

/* 移动端导航 */
.nav-mobile {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background-color: var(--mobile-menu-bg);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: var(--transition);
    z-index: 1000;
    padding: 2rem;
}

.nav-mobile.show {
    transform: translateX(0);
}

.close-btn {
    display: block;
    margin-left: auto;
    background: transparent;
    border: none;
    cursor: pointer;
    margin-bottom: 2rem;
}

.nav-mobile ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.nav-mobile li {
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 8px;
}

.nav-mobile a {
    font-size: 1.1rem;
    color: var(--text-color);
    display: block;
}

/* 横幅样式 */
.hero {
    padding: 4rem 0;
    background: var(--gradient-bg);
    margin-bottom: 4rem;
}

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.2rem;
    text-align: left;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.download-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--btn-bg);
    color: #fff;
    border-radius: 8px;
    font-size: 1.1rem;
    box-shadow: 0 4px 8px rgba(44, 130, 224, 0.2);
    transition: var(--transition);
}

.download-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(44, 130, 224, 0.3);
    color: #fff;
}

.hero-img {
    flex: 1;
    text-align: right;
}

.hero-img img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

/* 联系我们区块 */
.contact-us {
    padding: 4rem 0;
    margin-bottom: 4rem;
}

.contact-inner {
    display: flex;
    justify-content: center;
}

.contact-card {
    background-color: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    max-width: 800px;
    width: 100%;
}

.contact-item {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-item strong {
    color: var(--primary-color);
}

/* 门店助手折叠面板 */
.store-assistant {
    padding: 4rem 0;
    margin-bottom: 4rem;
    background-color: var(--secondary-color);
}

.accordion {
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    background-color: var(--accordion-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

.accordion-header {
    display: flex;
    align-items: center;
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: #f8f9fa;
}

.accordion-icon {
    width: 24px;
    height: 24px;
    margin-right: 1rem;
    transition: var(--transition);
}

.accordion-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.accordion-content {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-content p {
    padding: 1rem 0;
    color: var(--light-text);
    border-top: 1px solid var(--border-color);
}

.accordion-item.active .accordion-content {
    max-height: 200px;
}

.accordion-item.active .accordion-icon {
    transform: rotate(90deg);
}

/* 常见问题区块 */
.faq {
    padding: 4rem 0;
    margin-bottom: 4rem;
}

.faq-inner {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: #fff;
    padding: 1.5rem 2rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: var(--card-shadow);
}

.faq-question {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    text-align: left;
}

.faq-answer {
    color: var(--light-text);
}

/* 关注我们 & APP下载区块 */
.follow-app {
    padding: 4rem 0;
    margin-bottom: 4rem;
    background: var(--gradient-bg);
}

.follow-app-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
    gap: 4rem;
}

.follow-us, .app-download {
    flex: 1;
}

.follow-title, .download-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: left;
}

.follow-desc {
    color: var(--light-text);
    margin-bottom: 1.5rem;
}

.follow-qrcode {
    text-align: left;
}

.follow-qrcode img {
    border-radius: 8px;
    box-shadow: var(--card-shadow);
}

.follow-qrcode p {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-color);
}

.app-download .download-btns {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.app-download .download-btn {
    width: 100%;
    text-align: center;
    background-color: #AAAAFF;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.app-download .download-btn:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.app-download .download-btn img {
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* 页尾样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 4rem 0 2rem;
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col {
    padding: 0 1rem;
}

.col-title {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 1.2rem;
    text-align: left;
    border-bottom: 1px solid #555;
    padding-bottom: 0.5rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.8rem;
}

.footer-col a {
    color: #ccc;
    text-align: left;
    display: block;
}

.footer-col a:hover {
    color: var(--primary-color);
}

.footer-links {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1rem 0;
    border-top: 1px solid #555;
    border-bottom: 1px solid #555;
}

.footer-links a {
    color: #ccc;
    margin: 0 1rem;
}

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

.footer-copyright {
    text-align: center;
    color: #999;
    font-size: 0.9rem;
}

/* 响应式样式 */
@media (max-width: 992px) {
    .hero-inner {
        flex-direction: column-reverse;
        text-align: center;
    }
    
    .hero-content {
        width: 100%;
        text-align: center;
    }
    
    .hero-title {
        text-align: center;
    }
    
    .hero-desc {
        text-align: center;
    }
    
    .follow-app-inner {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .follow-title, .download-title {
        text-align: center;
    }
    
    .follow-qrcode {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-desktop {
        display: none;
    }
    
    .hamburger-btn {
        display: block;
    }
    
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 576px) {
    .header-inner {
        height: 60px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .contact-card {
        padding: 1.5rem;
    }
    
    .follow-app {
        padding: 2rem 0;
    }
    
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-links a {
        display: inline-block;
        margin: 0.5rem 0.5rem;
    }
}