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

html {
    scroll-behavior: smooth;  /* 平滑滚动效果 */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;  /* 基于1400px设计稿，内容区域1200px，左右各100px边距 */
    margin: 0 auto;
    padding: 0 100px;  /* 左右内边距100px，适配1400px设计稿 */
}

/* 平板适配 */
@media (max-width: 1024px) {
    .container {
        padding: 0 50px;
    }
}

/* Fixed Header (滚动后显示) */
.header-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-100%);
    transition: all 0.3s ease;
}

.header-fixed.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 之前的 header-fixed 已不再使用，如需恢复可再添加HTML结构 */

/* 已移除 hero-nav，导航改为顶部固定 + 侧边大纲 */

/* Fixed Header 的 Logo 和 Nav 样式 */
.header-fixed .logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-fixed .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    border-radius: 8px;
    position: relative;
}

.header-fixed .logo-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    background: white;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
}

.header-fixed .logo-text {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

.header-fixed .nav {
    display: flex;
    gap: 30px;
}

.header-fixed .nav a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s;
}

.header-fixed .nav a:hover {
    color: #4A90E2;
}

/* Hero Navigation (固定在hero section上) */
.hero-nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 3;
    padding: 20px 0;
    background: transparent;
}

.hero-nav .container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.hero-nav-links {
    display: flex;
    gap: 30px;
}

.hero-nav-links a {
    text-decoration: none;
    color: white;
    font-size: 16px;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.3s;
    padding: 5px 10px;
    border-radius: 5px;
}

.hero-nav-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

/* 侧边悬浮大纲导航 */
.side-outline {
    position: fixed;
    top: 50%;
    right: 30px;
    transform: translateY(-50%);
    z-index: 900;
    background: rgba(0, 0, 0, 0.6);
    padding: 16px 18px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.side-outline.visible {
    opacity: 1;
    pointer-events: auto;
}

.side-outline ul {
    list-style: none;
}

.side-outline li + li {
    margin-top: 10px;
}

.side-outline a {
    color: #fff;
    font-size: 14px;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s ease, transform 0.2s ease;
}

.side-outline a:hover {
    color: #FFD700;
    transform: translateX(-2px);
}

/* 当前所在 section 的高亮状态 */
.side-outline a.active {
    color: #FFD700;
    font-weight: 600;
}

/* 成功案例 - 网站插页弹窗 */
.offer-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.offer-modal.open {
    display: flex;
}

.offer-modal-content {
    position: relative;
    max-width: 80%;  /* 修改这里可以调整图片最大宽度（例如：70%、60% 或固定值如 1200px） */
    max-height: 85%; /* 修改这里可以调整图片最大高度（例如：80%、70% 或固定值如 800px） */
    overflow-y: auto;  /* 允许垂直滚动 */
    overflow-x: hidden; /* 禁止水平滚动 */
    -webkit-overflow-scrolling: touch; /* iOS 平滑滚动 */
}

.offer-modal-content img {
    display: block;
    width: 100%;
    height: auto;
    /* 移除 max-height: 100%，让图片可以完整显示，超出部分通过滚动查看 */
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.offer-modal-close {
    position: absolute;
    top: -16px;
    right: -16px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.offer-modal-close:hover {
    background: rgba(0, 0, 0, 1);
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 40px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    z-index: 900;
    backdrop-filter: blur(8px);
    transition: background 0.2s ease, transform 0.2s ease;
}

.back-to-top:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    width: 100%;
    aspect-ratio: 1.81 / 1; /* 长宽比 1.81:1 (宽度:高度) */
    background-image: url('image/首页素材.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 50px 80px;
    margin-top: 0; /* 移除margin-top，因为hero-nav在hero内部 */
    overflow: hidden;
}

/* 灰色蒙版 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4); /* 灰色蒙版，可以调整透明度 */
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 2; /* 确保内容在蒙版之上 */
    color: white;
    position: relative; /* 确保z-index生效 */
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 10px;
    opacity: 0.9;
}

.hero-description {
    font-size: 18px;
    margin-bottom: 25px;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 30px;
    line-height: 1.2;
}

.cta-button {
    background: #FFD700;
    color: #333;
    border: none;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.cta-button:hover {
    background: #FFC700;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}


/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 80px;  /* 基于设计稿调整 */
}

.section-title {
    font-size: 42px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}

.section-subtitle {
    font-size: 18px;
    color: #7f8c8d;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* About App Section */
.about-app-section {
    padding: 90px 0;
    background: #fff;
}

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

.about-text {
    text-align: left;
    line-height: 1.8;
}

.about-text h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: bold;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    font-size: 16px;
    color: #555;
    margin-bottom: 15px;
}

.about-text ul {
    margin: 15px 0;
    padding-left: 30px;
}

.about-text li {
    font-size: 16px;
    color: #555;
    margin-bottom: 10px;
    line-height: 1.7;
}

.about-text strong {
    color: #4A90E2;
}

/* Download Section */
.download-section {
    padding: 90px 0;  /* 基于设计稿调整 */
    background: #f8f9fa;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;  /* 基于设计稿调整卡片间距 */
}

.download-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.download-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.download-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.download-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.download-card p {
    color: #7f8c8d;
    line-height: 1.8;
}

/* Functionality Section */
.functionality-section {
    padding: 90px 0;  /* 基于设计稿调整 */
    background: #f8f9fa;
}

.functionality-grid {
    display: grid;
    grid-template-columns: repeat(3, 300px);  /* 一行三个，每个300px */
    gap: 40px;  /* 基于设计稿调整卡片间距 */
    justify-content: center;  /* 居中显示 */
}

.functionality-card {
    width: 300px;
    height: 400px;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: #fff;
    transition: transform 0.3s;
}

.functionality-card:hover {
    transform: translateY(-5px);
}

/* 图片区域：300x300px */
.card-image {
    width: 300px;
    height: 300px;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* 灰色蒙版 - 半透明 */
.card-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);  /* 半透明灰色蒙版 */
    z-index: 1;
}

/* 图片上的文字 */
.card-image h3,
.card-image .stat-number {
    position: relative;
    z-index: 2;  /* 在蒙版之上 */
    color: white;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.card-image h3 {
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 10px;
    line-height: 1.2;
}

.card-image .stat-number {
    font-size: 40px;
    font-weight: bold;
    line-height: 1;
}

/* 为每个卡片设置不同的背景图片 */
.card-1 .card-image {
    background-image: url('image/function/f1.png');
}

.card-2 .card-image {
    background-image: url('image/function/f2.png');
}

.card-3 .card-image {
    background-image: url('image/function/f3.png');
}

/* 文字区域：300x100px */
.card-content {
    width: 300px;
    height: 100px;
    padding: 15px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #333;
    background: #fff;
}

/* 文字区域中的样式保持不变 */
.card-content h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #2c3e50;
    font-weight: bold;
}

.card-content .stat-number {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 3px;
    line-height: 1;
    color: #4A90E2;
}

.card-subtitle {
    font-size: 30px;
    margin-bottom: 2px;
    color: #555;
    text-align: center;
}

.card-desc {
    font-size: 12px;
    color: #7f8c8d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
}

/* Success Cases Section */
.success-section {
    padding: 90px 0;  /* 基于设计稿调整 */
    background: #fff;
}

.success-cases {
    display: flex;
    flex-direction: column;
    gap: 0px;  /* 案例间距稍大一些，便于视觉区分 */
}

.success-case {
    position: relative;
    min-height: 260px;
}

.case-content {
    width: 450px;  
    padding: 5px;  
    background: #f8f9fa;
    border-radius: 14px;  /* 16px * (1200/1400) = 13.7px ≈ 14px */
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 171px;        /* 与企业圆形元素直径保持一致 */
    max-height: 171px;
    overflow: hidden;     /* 防止文字溢出框体 */
    word-wrap: break-word;
}

.success-case h3 {
    font-size: 18px;
    color: #2c3e50;
    margin-bottom: 8px;
}

.case-subtitle {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 8px;
    font-style: italic;
}

.case-description {
    color: #555;
    line-height: 1.7;
}

.case-logo {
    width: 171px;  /* 200px * (1200/1400) = 171.4px ≈ 171px */
    height: 171px;  /* 200px * (1200/1400) = 171.4px ≈ 171px */
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    overflow: hidden;  /* 确保图片在圆形内 */
}

.case-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;  /* 保持图片比例，填充圆形 */
    border-radius: 50%;
}

/* 左侧文本：文字框在圆左边 */
.success-case-left .case-content {
    right: 50%;
    margin-right: 111px;  /* 圆形半径(85.5px) + 间距(25.5px) = 111px，确保不重叠 */
}

/* 右侧文本：文字框在圆右边 */
.success-case-right .case-content {
    left: 50%;
    margin-left: 111px;  /* 圆形半径(85.5px) + 间距(25.5px) = 111px，确保不重叠 */
}


/* Partners Section */
.partners-section {
    padding: 90px 0;  /* 基于设计稿调整 */
    background: #f8f9fa;
}

/* 公司Logo大图展示区域，仅作为背景，无交互 */
.partners-banner {
    width: 100%;
    max-width: 1000px;
    height: 400px;
    margin: 0 auto;
    background-image: url('image/company/logo.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* Footer */
.footer {
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
    background-color: #222; /* 作为兜底色 */
    background-image: url('image/background/background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* 去掉原来的渐变遮罩，不再需要 ::before */

.footer .container {
    position: relative;
    z-index: 2;
}

.footer-title {
    text-align: center;
    color: white;
    font-size: 36px;
    margin-bottom: 50px;
}

.contact-info {
    display: flex;
    flex-direction: row;     /* 一字排开 */
    justify-content: center;
    align-items: stretch;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.contact-box {
    align-items: center;
    justify-content: center;
    background: white;
    padding: 25px 30px;
    border-radius: 10px;
    color: #2c3e50;
    font-size: 18px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    flex: 1;                /* 三个框平均分配宽度 */
    min-width: 0;           /* 防止内容撑破布局 */
}

.contact-box strong {
    color: #4A90E2;
    margin-right: 10px;
}

/* 法律信息 */
.legal-info {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.legal-links {
    margin-bottom: 20px;
}

.legal-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
    cursor: pointer;
}

.legal-links a:hover {
    color: #FFD700;
}

.legal-links span {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 10px;
}

.copyright {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    line-height: 1.8;
}

.copyright p {
    margin: 5px 0;
}

.copyright a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.copyright a:hover {
    color: #FFD700;
    text-decoration: underline;
}

/* 法律信息弹窗 */
.legal-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.legal-modal-content {
    background: #fff;
    border-radius: 12px;
    max-width: 800px;
    max-height: 90vh;
    width: 100%;
    position: relative;
    overflow-y: auto;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.legal-modal-content h2 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 25px;
    text-align: center;
    border-bottom: 2px solid #4A90E2;
    padding-bottom: 15px;
}

.legal-text {
    text-align: left;
    line-height: 1.8;
}

.legal-text h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-top: 25px;
    margin-bottom: 12px;
    font-weight: bold;
}

.legal-text h3:first-child {
    margin-top: 0;
}

.legal-text p {
    font-size: 15px;
    color: #555;
    margin-bottom: 15px;
}

.legal-text ul {
    margin: 15px 0;
    padding-left: 30px;
}

.legal-text li {
    font-size: 15px;
    color: #555;
    margin-bottom: 8px;
    line-height: 1.7;
}

.legal-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.1);
    color: #333;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.legal-modal-close:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: rotate(90deg);
}

/* Responsive Design - 平板 */
@media (max-width: 1024px) {
    .container {
        padding: 0 50px;
    }

    .hero-nav-links {
        gap: 20px;
        font-size: 14px;
    }

    .section-title {
        font-size: 36px;
    }

    .download-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .functionality-grid {
        grid-template-columns: repeat(2, 300px);
        justify-content: center;
        gap: 30px;
    }
}

/* Responsive Design - 移动端 */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    /* 隐藏侧边导航和回到顶部按钮 */
    .side-outline {
        display: none;
    }

    .back-to-top {
        width: 36px;
        height: 36px;
        right: 20px;
        bottom: 20px;
        font-size: 18px;
    }

    /* Hero Section */
    .hero {
        aspect-ratio: 16 / 9;
        padding: 80px 20px 40px;
        min-height: 400px;
    }

    .hero-nav {
        padding: 15px 0;
    }

    .hero-nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
        font-size: 13px;
    }

    .hero-nav-links a {
        padding: 4px 8px;
        font-size: 13px;
    }

    .hero-content {
        max-width: 100%;
        padding: 0 10px;
    }

    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 8px;
    }

    .hero-title {
        font-size: 28px;
        margin-bottom: 20px;
    }

    .hero-description {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .cta-button {
        padding: 12px 30px;
        font-size: 16px;
    }

    /* Section Headers */
    .section-header {
        margin-bottom: 50px;
    }

    .section-title {
        font-size: 28px;
    }

    .section-subtitle {
        font-size: 14px;
        letter-spacing: 1px;
    }

    /* About App Section */
    .about-app-section {
        padding: 60px 0;
    }

    .about-text h3 {
        font-size: 20px;
        margin-top: 25px;
    }

    .about-text p,
    .about-text li {
        font-size: 14px;
    }

    /* Download Section */
    .download-section {
        padding: 60px 0;
    }

    .download-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .download-card {
        padding: 30px 20px;
    }

    .download-icon {
        width: 80px;
        height: 80px;
        margin-bottom: 20px;
    }

    .download-card h3 {
        font-size: 20px;
        margin-bottom: 15px;
    }

    .download-card p {
        font-size: 14px;
    }

    /* Functionality Section */
    .functionality-section {
        padding: 60px 0;
    }

    .functionality-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .functionality-card {
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }

    .card-image {
        width: 100%;
        height: 250px;
    }

    .card-image h3 {
        font-size: 32px;
    }

    .card-image .stat-number {
        font-size: 32px;
    }

    .card-content {
        width: 100%;
        height: 100px;
        padding: 12px 15px;
    }

    .card-subtitle {
        font-size: 24px;
    }

    .card-desc {
        font-size: 11px;
    }

    /* Success Cases Section */
    .success-section {
        padding: 60px 0;
    }

    .success-cases {
        gap: 60px;
    }

    .success-case {
        min-height: auto;
        padding: 20px 0;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .case-content {
        position: static;
        width: 100%;
        max-width: 100%;
        height: auto;
        min-height: 120px;
        max-height: none;
        transform: none;
        margin-bottom: 20px;
        padding: 15px;
    }

    .success-case-left .case-content,
    .success-case-right .case-content {
        right: auto;
        left: auto;
        margin-right: 0;
        margin-left: 0;
    }

    .case-logo {
        position: static;
        transform: none;
        margin: 0 auto;
        width: 120px;
        height: 120px;
    }

    .success-case h3 {
        font-size: 16px;
        margin-bottom: 6px;
    }

    .case-subtitle {
        font-size: 12px;
        margin-bottom: 6px;
    }

    .case-description {
        font-size: 13px;
        line-height: 1.6;
    }

    /* Partners Section */
    .partners-section {
        padding: 60px 0;
    }

    .partners-banner {
        height: 300px;
    }

    /* Footer */
    .footer {
        padding: 60px 0 40px;
    }

    .footer-title {
        font-size: 28px;
        margin-bottom: 30px;
    }

    .contact-info {
        flex-direction: column;
        gap: 20px;
        padding: 0;
    }

    .contact-box {
        width: 100%;
        padding: 20px 15px;
        font-size: 16px;
    }

    .contact-info .contact-box:last-child {
        flex: 1;
        text-align: center;
    }

    .contact-info .contact-box:last-child strong {
        display: inline;
        margin-right: 8px;
        margin-bottom: 0;
    }

    /* Legal Info */
    .legal-info {
        margin-top: 40px;
        padding-top: 25px;
    }

    .legal-links {
        margin-bottom: 15px;
    }

    .legal-links a {
        font-size: 13px;
    }

    .copyright {
        font-size: 12px;
    }

    .legal-modal-content {
        padding: 30px 20px;
        max-height: 85vh;
    }

    .legal-modal-content h2 {
        font-size: 24px;
        margin-bottom: 20px;
    }

    .legal-text h3 {
        font-size: 18px;
        margin-top: 20px;
    }

    .legal-text p,
    .legal-text li {
        font-size: 14px;
    }

    /* 弹窗适配 */
    .offer-modal-content {
        max-width: 95%;
        max-height: 90%;
        padding: 10px;
    }

    .offer-modal-close {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
        font-size: 24px;
    }
}

/* Responsive Design - 小屏手机 */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 60px 15px 30px;
        min-height: 350px;
    }

    .hero-nav-links {
        gap: 8px;
        font-size: 12px;
    }

    .hero-nav-links a {
        padding: 3px 6px;
        font-size: 12px;
    }

    .hero-subtitle {
        font-size: 14px;
    }

    .hero-title {
        font-size: 24px;
        margin-bottom: 15px;
    }

    .cta-button {
        padding: 10px 25px;
        font-size: 14px;
    }

    .section-title {
        font-size: 24px;
    }

    .section-subtitle {
        font-size: 12px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .download-section,
    .functionality-section,
    .success-section,
    .partners-section {
        padding: 50px 0;
    }

    .download-card {
        padding: 25px 15px;
    }

    .download-icon {
        width: 70px;
        height: 70px;
    }

    .download-card h3 {
        font-size: 18px;
    }

    .card-image {
        height: 200px;
    }

    .card-image h3 {
        font-size: 28px;
    }

    .card-image .stat-number {
        font-size: 28px;
    }

    .card-subtitle {
        font-size: 20px;
    }

    .case-logo {
        width: 100px;
        height: 100px;
    }

    .case-content {
        padding: 12px;
    }

    .success-case h3 {
        font-size: 14px;
    }

    .case-description {
        font-size: 12px;
    }

    .footer-title {
        font-size: 24px;
    }

    .contact-box {
        padding: 15px 12px;
        font-size: 14px;
    }

    .back-to-top {
        width: 32px;
        height: 32px;
        right: 15px;
        bottom: 15px;
        font-size: 16px;
    }
}