/* General Body Styles */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #f8f8f8;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: #007bff;
    color: #fff;
    border: 1px solid #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
    border: 1px solid #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #5a6268;
}

.btn-hero {
    background-color: #28a745;
    color: #fff;
    border: 1px solid #28a745;
    padding: 12px 25px;
    font-size: 1.1em;
}

.btn-hero:hover {
    background-color: #218838;
    border-color: #218838;
}

/* Header Styles */
.main-header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-top-bar {
    background-color: #343a40;
    color: #f8f9fa;
    padding: 10px 0;
    font-size: 0.9em;
}

.header-top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.header-top-bar .contact-info span {
    margin-right: 20px;
}

.header-top-bar .contact-info i,
.header-top-bar .social-media i {
    margin-right: 5px;
    color: #fff;
}

.header-top-bar .social-media a {
    color: #f8f9fa;
    margin-left: 15px;
    transition: color 0.3s ease;
}

.header-top-bar .social-media a:hover {
    color: #007bff;
}

.header-main-nav {
    padding: 15px 0;
}

.header-main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo img {
    vertical-align: middle;
    height: 40px; /* Adjust as needed */
    width: auto;
}

.main-navigation .nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.main-navigation .nav-menu li {
    position: relative;
    margin-left: 30px;
}

.main-navigation .nav-menu li a {
    display: block;
    padding: 10px 0;
    color: #333;
    font-weight: bold;
    transition: color 0.3s ease;
}

.main-navigation .nav-menu li a:hover,
.main-navigation .nav-menu li a.active {
    color: #007bff;
    text-decoration: none;
}

.main-navigation .has-submenu > a::after {
    content: ' \25BC'; /* Down arrow */
    font-size: 0.8em;
    margin-left: 5px;
}

.main-navigation .submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    min-width: 180px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.main-navigation .has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-navigation .submenu li a {
    padding: 10px 20px;
    white-space: nowrap;
    color: #555;
    font-weight: normal;
}

.main-navigation .submenu li a:hover {
    background-color: #f4f4f4;
    color: #007bff;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.menu-toggle .bar {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333;
    margin-bottom: 5px;
    transition: all 0.3s ease;
}

.menu-toggle .bar:last-child {
    margin-bottom: 0;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('/assets/images/hero-bg.jpg') no-repeat center center/cover;
    color: #fff;
    padding: 80px 0;
    text-align: center;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-section .container {
    max-width: 900px;
}

.hero-section h1 {
    font-size: 3.2em;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-section p {
    font-size: 1.3em;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer Styles */
.main-footer {
    background-color: #212529;
    color: #f8f9fa;
    padding: 50px 0 20px;
    font-size: 0.9em;
}

.main-footer .footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.main-footer h3 {
    color: #007bff;
    margin-bottom: 20px;
    font-size: 1.2em;
}

.main-footer p {
    margin-bottom: 10px;
}

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

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

.main-footer ul li a {
    color: #f8f9fa;
    transition: color 0.3s ease;
}

.main-footer ul li a:hover {
    color: #007bff;
    text-decoration: none;
}

.main-footer .footer-contact i {
    margin-right: 10px;
    color: #007bff;
}

.social-media-footer a {
    color: #f8f9fa;
    margin-right: 15px;
    font-size: 1.3em;
    transition: color 0.3s ease;
}

.social-media-footer a:hover {
    color: #007bff;
}

.footer-newsletter form {
    display: flex;
    margin-top: 15px;
}

.footer-newsletter input[type="email"] {
    flex-grow: 1;
    padding: 10px 15px;
    border: 1px solid #495057;
    border-radius: 5px 0 0 5px;
    background-color: #343a40;
    color: #fff;
}

.footer-newsletter input[type="email"]::placeholder {
    color: #adb5bd;
}

.footer-newsletter .btn-subscribe {
    background-color: #007bff;
    color: #fff;
    border: 1px solid #007bff;
    border-radius: 0 5px 5px 0;
    padding: 10px 20px;
    cursor: pointer;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-newsletter .btn-subscribe:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #495057;
    margin-top: 30px;
}

.footer-bottom a {
    color: #007bff;
    margin: 0 10px;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 992px) {
    .header-top-bar .contact-info span {
        margin-right: 10px;
    }
    .header-top-bar .social-media a {
        margin-left: 10px;
    }
    .header-main-nav .container {
        flex-wrap: nowrap;
    }
    .main-navigation {
        order: 2;
        flex-grow: 1;
        text-align: right;
        position: relative;
    }
    .header-actions {
        margin-left: auto;
        order: 3;
    }
    .menu-toggle {
        display: block;
        margin-left: auto;
        order: 1;
    }
    .main-navigation .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: #fff;
        position: absolute;
        top: 100%; /* Position below header-main-nav */
        left: 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        z-index: 999;
        border-top: 1px solid #eee;
    }

    .main-navigation.active .nav-menu {
        display: flex;
    }

    .main-navigation .nav-menu li {
        margin: 0;
        border-bottom: 1px solid #eee;
        width: 100%;
    }

    .main-navigation .nav-menu li:last-child {
        border-bottom: none;
    }

    .main-navigation .nav-menu li a {
        padding: 15px 20px;
    }

    .main-navigation .has-submenu > a {
        position: relative;
    }
    .main-navigation .has-submenu > a::after {
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translateY(-50%);
    }

    .main-navigation .submenu {
        position: static;
        box-shadow: none;
        transform: none;
        opacity: 1;
        visibility: visible;
        background-color: #f8f8f8;
        border-top: 1px solid #eee;
        padding-left: 20px;
        display: none; /* Controlled by JS for mobile */
    }

    .main-navigation .has-submenu.active .submenu {
        display: block;
    }

    .hero-section h1 {
        font-size: 2.5em;
    }

    .hero-section p {
        font-size: 1.1em;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-newsletter form {
        justify-content: center;
    }
    .footer-newsletter input[type="email"] {
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    .header-top-bar .container {
        flex-direction: column;
        text-align: center;
    }
    .header-top-bar .contact-info,
    .header-top-bar .social-media {
        margin-bottom: 10px;
    }
    .header-top-bar .contact-info span {
        margin: 0 10px;
    }
    .header-top-bar .social-media a {
        margin: 0 8px;
    }
    .hero-section {
        padding: 60px 0;
        min-height: 300px;
    }
    .hero-section h1 {
        font-size: 2em;
    }
    .hero-section p {
        font-size: 1em;
    }
}
/* 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;
  }
}