*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
:root {
    --brand: #00BEBD;
    --brand-dark: #009B9A;
    --brand-light: #E6F8F8;
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%; /* 防止移动端横屏时自动放大字体 */
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--slate-50);
    color: var(--slate-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden; /* 防止页面整体横向溢出 */
}
a {
    text-decoration: none;
    color: inherit;
}
ul {
    list-style: none;
}

/* 2. 限制最大宽度并提供安全的左右内边距 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px; /* 移动端适当减小左右padding，避免内容可视区太窄 */
    width: 100%;
}

/* 顶部导航栏 */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--slate-100);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.header-inner {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-box {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--brand);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    font-weight: bold;
}
.logo-text span:first-child {
    font-size: 16px;
    font-weight: 900;
    color: var(--slate-900);
    display: block;
}
.logo-text span:last-child {
    font-size: 10px;
    color: var(--slate-400);
    display: block;
}
.nav-links {
    display: flex;
    gap: 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--slate-700);
}
.nav-links a:hover, .nav-links a.active {
    color: var(--brand);
}
.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--slate-700);
    cursor: pointer;
    padding: 4px;
}
.mobile-menu {
    display: none;
    background: white;
    border-bottom: 1px solid var(--slate-100);
    padding: 10px 16px;
}
.mobile-menu a {
    display: block;
    padding: 10px 0;
    font-size: 15px;
    color: var(--slate-700);
    border-bottom: 1px solid var(--slate-50);
}

/* Hero Banner */
.page-hero {
    background: var(--slate-900);
    color: white;
    padding: 50px 0;
    position: relative;
    overflow: hidden;
}
.breadcrumb {
    font-size: 12px;
    color: var(--slate-400);
    margin-bottom: 12px;
}
.page-hero h1 {
    font-size: 28px; /* 移动端适配缩小字号 */
    font-weight: 900;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    word-break: break-all;
}
.page-hero p {
    font-size: 14px;
    color: #cbd5e1;
    line-height: 1.6;
}

/* Contact Section Layout */
.content-section {
    padding: 40px 0;
}
.contact-single-wrap {
    max-width: 800px;
    margin: 0 auto;
}
.contact-card {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: 16px;
    padding: 24px; /* 移动端内边距自适应，防止挤压 */
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    word-break: break-all; /* 防止长文本撑破卡片 */
}
.contact-card h2 {
    font-size: 20px;
    font-weight: bold;
    color: var(--slate-900);
    margin-bottom: 8px;
}
.contact-card > p {
    font-size: 14px;
    color: var(--slate-600);
    margin-bottom: 24px;
    line-height: 1.6;
}

/* 信息列表自适应网格 */
.info-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.info-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--slate-50);
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--slate-100);
}
.info-item.full-width {
    grid-column: span 2;
}
.info-icon {
    width: 40px;
    height: 40px;
    background: var(--brand-light);
    color: var(--brand);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    font-weight: bold;
}
.info-content h3 {
    font-size: 12px;
    color: var(--slate-400);
    font-weight: 500;
    margin-bottom: 2px;
    text-transform: uppercase;
}
.info-content div {
    font-size: 14px;
    font-weight: bold;
    color: var(--slate-900);
    word-break: break-all; /* 确保邮箱或长微信ID自动换行 */
}

/* Footer */
footer {
    background: var(--slate-950);
    color: var(--slate-500);
    padding: 24px 0;
    border-top: 1px solid var(--slate-900);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-brand {
    color: #cbd5e1;
    font-weight: bold;
}
.footer-links {
    display: flex;
    gap: 16px;
}

/* 移动端媒体查询调整 */
@media (max-width: 768px) {
    .nav-links {
display: none;
    }
    .menu-btn {
display: block;
    }
    .info-list {
grid-template-columns: 1fr; /* 小屏幕下强制单列显示，彻底杜绝挤压和显示不全 */
    }
    .info-item.full-width {
grid-column: span 1;
    }
    .contact-card {
padding: 20px 16px;
    }
}