/* 全局样式 - 基于 #4B4EF4 的完整色板系统 */
:root {
    /* 主色调 */
    --primary-50: #fff1f0;
    --primary-100: #ffe0dd;
    --primary-200: #ffc2b9;
    --primary-300: #ffa38d;
    --primary-400: #ff7a5a;
    --primary-500: #f32610;  /* 主色调 */
    --primary-600: #f95f4a;  /* 浅色版主色调 */
    --primary-700: #e5230d;
    --primary-800: #cc200b;
    --primary-900: #b21c0a;

    /* 中性色 */
    --gray-50: #fafafa;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #100f0e;

    /* 语义色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: var(--primary-500);

    /* 文字色 */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-on-primary: #ffffff;

    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(243, 38, 16, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    height: 60px;
    width: auto;
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-500);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a:not(.btn-primary):not(.btn-secondary) {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover:not(.btn-primary):not(.btn-secondary) {
    color: var(--primary-500);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(243, 38, 16, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(243, 38, 16, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-600);
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-600);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--primary-500);
    color: var(--text-on-primary);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding: 80px 0 0 0;
    max-width: 1600px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.highlight {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-500);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.hero-image img {
    max-width: 580px;
    height: auto;

}

/* 通用部分样式 */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 功能特性 */
.features {
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--text-on-primary);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

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

.feature-list li {
    padding: 0.5rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-500);
    font-weight: bold;
}

/* 解决方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.solution-card {
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(75, 78, 244, 0.1);
    transition: all 0.3s ease;
    position: relative;
    border: 2px solid transparent;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(243, 38, 16, 0.15);
}

.solution-card.featured {
    border-color: var(--primary-500);
    transform: scale(1.05);
}

.solution-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.solution-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.solution-badge {
    background: var(--primary-500);
    color: var(--text-on-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.solution-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.solution-features {
    list-style: none;
    margin-bottom: 2rem;
}

.solution-features li {
    padding: 0.5rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
}

.solution-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-500);
    font-weight: bold;
}

.solution-price {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-500);
}

/* 成功案例 */
.cases {
    background: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.case-card {
    background: var(--bg-primary);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(75, 78, 244, 0.1);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(243, 38, 16, 0.15);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 2rem;
}

.case-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.case-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.case-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-500);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 2rem;
}

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

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 10px;
}

.feature-item i {
    color: var(--primary-500);
    font-size: 1.5rem;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.contact-item i {
    color: var(--primary-500);
    font-size: 1.2rem;
    width: 20px;
}

.contact-form {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(243, 38, 16, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 部署方式 */
.deployment {
    background: var(--bg-primary);
    padding: 5rem 0;
}

.deployment .section-title {
    margin-bottom: 1rem;
}

.deployment .section-subtitle {
    margin-bottom: 3rem;
}

.deployment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1200px;
}

@media (max-width: 992px) {
    .deployment-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.deployment-text {
    padding: 2rem;
}

.deployment-tools {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.deployment-tool {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background: linear-gradient(135deg, var(--primary-50), #ffffff);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid var(--primary-100);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.deployment-tool:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(243, 38, 16, 0.1);
}

.deployment-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.deployment-icon i {
    font-size: 1.5rem;
    color: var(--text-on-primary);
}

.deployment-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.deployment-type {
    margin-bottom: 0.5rem;
}

.badge {
    background: var(--primary-100);
    color: var(--primary-500);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
}

.deployment-info p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

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

.deployment-list li {
    padding: 0.35rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9rem;
}

.deployment-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-500);
    font-weight: bold;
}

.deployment-images {
    display: flex;
    justify-content: center;
    align-items: end;
    position: relative;
    min-height: 400px;
}

.deployment-images::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(243, 38, 16, 0.1) 0%, rgba(243, 38, 16, 0) 70%);
    border-radius: 30px;
    z-index: -1;
}

.web-image {
    position: relative;
}

.web-image img {
    max-width: 180%;
    height: auto;
}

.b-app-image {
    position: absolute;
    left: 0;
    bottom: 0;
    z-index: 10;
}

.b-app-image img {
    max-width: 35%;
    height: auto;
}


/* 产品核心功能板块 */
.core-features {
    background: var(--bg-secondary);
    padding: 5rem 0;
}

.core-feature-block {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.core-feature-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.core-feature-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--bg-secondary);
}

.core-feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    flex-shrink: 0;
}

.core-feature-icon i {
    font-size: 1.5rem;
    color: var(--text-on-primary);
}

.core-feature-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.core-feature-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.core-feature-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.core-feature-item {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 1.5rem;
}

.core-feature-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.core-feature-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.core-feature-list {
    list-style: none;
    padding: 0;
}

.core-feature-list li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    line-height: 1.7;
    position: relative;
}

.core-feature-list li::before {
    content: '•';
    color: var(--primary-500);
    font-weight: bold;
    margin-right: 0.75rem;
}

.core-feature-list strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* C端体验 */
.customer-experience {
    background: linear-gradient(135deg, var(--primary-50) 0%, #ffffff 100%);
    padding: 5rem 0;
}

.customer-experience .section-title {
    margin-bottom: 1rem;
}

.customer-experience .section-subtitle {
    margin-bottom: 3rem;
}

.customer-experience-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 992px) {
    .customer-experience-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.experience-text {
    padding: 2rem;
}

.experience-text h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.experience-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.experience-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.experience-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.experience-feature i {
    color: var(--primary-500);
    font-size: 1.5rem;
    width: 30px;
    text-align: center;
}

.experience-feature span {
    color: var(--text-primary);
    font-size: 1rem;
}

.experience-images {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: center;
    position: relative;
}

.experience-images::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(243, 38, 16, 0.1) 0%, rgba(243, 38, 16, 0) 70%);
    border-radius: 30px;
    z-index: -1;
}

.app-image {
    transform: rotate(-5deg);
    transition: transform 0.3s ease;
}

.miniapp-image {
    transform: rotate(5deg);
    transition: transform 0.3s ease;
}

.experience-images:hover .app-image {
    transform: rotate(-3deg) translateY(-5px);
}

.experience-images:hover .miniapp-image {
    transform: rotate(3deg) translateY(-5px);
}

.app-image img, .miniapp-image img {
    max-width: 100%;
    height: auto;
    border-radius: 30px;
}

.deployment-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-500);
    font-weight: bold;
}

/* 下载页面样式 */
.download-section {
    padding: 10rem 0 3rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.download-section .section-header {
    margin-bottom: 4rem;
}

.download-section .section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.download-section .section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.download-content {
    max-width: 1200px;
    margin: 0 auto;
}

.download-category {
    margin-bottom: 4rem;
}

.category-title {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

/* 应用类别样式 */
.app-category {
    margin-bottom: 5rem;
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.app-header {
    text-align: center;
    margin-bottom: 3rem;
}

.app-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.app-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 应用展示区域 */
.app-showcase {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
    justify-content: center;
}

.app-downloads {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    justify-content: center;
}

.download-card {
    background: white;
    border-radius: 15px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.card-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.detail-item {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: block;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(76, 175, 80, 0.2);
}

.qrcode-section {
    margin-bottom: 4rem;
    background: white;
    border-radius: 15px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.qrcode-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 3rem;
}

.qrcode-content {
    text-align: center;
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    justify-content: center;
}

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



.qrcode-text {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.app-features {
    max-width: 500px;
}

.app-features h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.app-features .feature-list {
    list-style: none;
    padding: 0;
}

.app-features .feature-list li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.app-features .feature-list i {
    color: var(--primary-500);
}

.download-help {
    background: white;
    border-radius: 15px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.help-title {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

.help-content {
    margin-bottom: 2rem;
}

.help-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.help-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.help-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.help-item p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.help-contact {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.help-contact p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* 页脚 */
.footer {
    background: var(--gray-900);
    color: var(--text-on-primary);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
    align-items: start;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
}

.footer-logo {
    height: 60px;
    width: auto;
}

.footer-brand span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-on-primary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-on-primary);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-400);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
    font-size: 0.8em;
}

.beian-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian-link:hover {
    color: var(--primary-400);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 0 50px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 2rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-brand {
        justify-content: center;
    }
    
    .features-grid,
    .solutions-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card,
    .solution-card,
    .case-card {
        padding: 1.5rem;
    }
}