:root {
    --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) + 2px buffer */
}

body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding-top: var(--header-offset);
    background-color: #F4F7FB;
    color: #1F2D3D;
    overflow-x: hidden;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-top {
    box-sizing: border-box;
    min-height: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: #2F6BFF; /* Main Blue */
    width: 100%;
}

.header-container {
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 20px;
    padding-right: 20px;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #FFFFFF;
    text-decoration: none;
    display: block;
    line-height: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo img {
    display: block;
    max-height: 60px;
    height: auto;
    width: auto;
    max-width: 280px;
    object-fit: contain;
}

.desktop-nav-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.mobile-nav-buttons {
    box-sizing: border-box;
    display: none; /* Hidden by default on desktop */
    min-height: 48px;
    background-color: #F4F7FB; /* Light background for mobile buttons */
    padding: 0 20px;
    width: 100%;
    overflow: hidden;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border: none;
}

.btn-primary {
    background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
    color: #FFFFFF;
}

.btn-primary:hover {
    opacity: 0.9;
    box-shadow: 0 4px 15px rgba(47, 107, 255, 0.4);
}

.btn-secondary {
    background-color: #F4F7FB; /* Use a light background from palette */
    color: #2F6BFF; /* Use main blue for text */
    border: 1px solid #2F6BFF;
}

.btn-secondary:hover {
    background-color: #2F6BFF;
    color: #FFFFFF;
}

.main-nav {
    box-sizing: border-box;
    min-height: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: #6FA3FF; /* Accent Blue, different from header-top */
    width: 100%;
}

.nav-container {
    box-sizing: border-box;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

.nav-link {
    color: #FFFFFF;
    text-decoration: none;
    padding: 0 15px;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
    height: 100%;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.nav-link:hover {
    color: #D6E2FF;
}

.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-menu span {
    display: block;
    height: 3px;
    background-color: #FFFFFF;
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
}

.hamburger-menu.active span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    display: none;
}

/* Footer Styles */
.site-footer {
    background-color: #1F2D3D; /* Dark background for footer */
    color: #D6E2FF;
    padding: 40px 20px 20px;
    font-size: 14px;
}

.footer-top-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto 30px;
}

.footer-col h3 {
    color: #FFFFFF;
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-logo {
    font-size: 24px;
    font-weight: bold;
    color: #FFFFFF;
    text-decoration: none;
    margin-bottom: 15px;
    display: block;
}

.footer-description {
    line-height: 1.6;
    color: #D6E2FF;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li {
    margin-bottom: 8px;
}

.footer-nav a {
    color: #D6E2FF;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: #6FA3FF;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #D6E2FF;
}

.footer-bottom p {
    margin: 0;
}

.footer-slot-anchor-inner {
    min-height: 1px;
}

/* Mobile Styles */
@media (max-width: 768px) {
    :root {
        --header-offset: 110px; /* Mobile: 60px (header-top) + 48px (main-nav) + 2px buffer */
    }

    .header-top {
        min-height: 60px !important;
        height: 60px !important;
    }

    .header-container {
        width: 100%;
        max-width: none;
        padding-left: 15px;
        padding-right: 15px;
        position: relative;
    }

    .logo {
        flex: 1 !important;
        display: flex !important;
        justify-content: center !important;
        align-items: center !important;
        font-size: 24px;
        max-width: calc(100% - 70px); /* Account for hamburger menu width */
    }

    .logo img {
        max-height: 56px !important;
    }

    .desktop-nav-buttons {
        display: none !important;
    }

    .mobile-nav-buttons {
        display: flex !important;
        min-height: 48px;
        align-items: center;
        justify-content: center;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden;
        gap: 10px;
        flex-wrap: nowrap;
    }

    .mobile-nav-buttons .btn {
        flex: 1;
        min-width: 0;
        max-width: calc(50% - 5px); /* 50% minus half of the gap */
        box-sizing: border-box;
        padding: 8px 12px;
        font-size: 13px;
        white-space: normal;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .hamburger-menu {
        display: flex;
        position: absolute;
        left: 15px;
        top: 50%;
        transform: translateY(-50%);
    }

    .main-nav {
        min-height: 48px !important;
        height: auto; /* Allow content to dictate height */
        position: fixed;
        top: var(--header-offset);
        left: 0;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        background-color: #2F6BFF; /* Main blue for mobile menu */
        padding-top: 20px;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
        display: none; /* Hidden by default */
        flex-direction: column;
        align-items: flex-start;
    }

    .main-nav.active {
        transform: translateX(0);
        display: flex; /* Show when active */
    }

    .nav-container {
        width: 100%;
        max-width: none;
        padding: 0;
        flex-direction: column;
        align-items: flex-start;
        height: auto;
    }

    .nav-link {
        width: 100%;
        padding: 12px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        justify-content: flex-start;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .overlay.active {
        display: block;
    }

    .footer-top-grid {
        grid-template-columns: 1fr;
    }

    .footer-col {
        margin-bottom: 20px;
    }

    .footer-col:last-child {
        margin-bottom: 0;
    }

    .page-content img {
        max-width: 100% !important;
        height: auto !important;
        display: block;
    }
    .page-content {
        overflow-x: hidden;
        max-width: 100%;
    }
    body {
        overflow-x: hidden;
    }
    body.no-scroll {
        overflow: hidden;
    }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}