:root {
    --primary-color: #007bff; /* A default blue, will override with green-gold */
    --secondary-color: #6c757d;
    --text-color: #333;
    --background-color: #f8f9fa;
    --header-bg: #1a1a1a; /* Dark background for premium feel */
    --footer-bg: #1a1a1a;
    --nav-link-color: #ffffff;
    --nav-link-hover: #ffd700; /* Gold */
    --gradient-start: #28a745; /* Green */
    --gradient-end: #ffd700; /* Gold */
    --border-color: #444;
    --marquee-bg: #222;
    --marquee-text: #eee;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

a {
    text-decoration: none;
    color: var(--primary-color);
}

a:hover {
    color: var(--nav-link-hover);
}

ul {
    list-style: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login {
    background-color: transparent;
    color: var(--nav-link-color);
    border: 1px solid var(--nav-link-color);
}

.btn-login:hover {
    background-color: var(--nav-link-color);
    color: var(--header-bg);
}

.btn-register {
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    border: 1px solid transparent;
    margin-left: 10px;
}

.btn-register:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Header */
.main-header {
    background-color: var(--header-bg);
    color: var(--nav-link-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.header-top-bar {
    background-color: #000;
    padding: 8px 0;
    font-size: 0.85em;
    border-bottom: 1px solid var(--border-color);
}

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

.language-selector {
    position: relative;
    display: inline-block;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--nav-link-color);
    cursor: pointer;
    padding: 5px 10px;
    display: flex;
    align-items: center;
    font-size: 1em;
}

.lang-flag {
    width: 20px;
    height: auto;
    margin-right: 5px;
    border-radius: 2px;
}

.lang-btn .arrow-down {
    margin-left: 5px;
    border: solid var(--nav-link-color);
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
}

.lang-dropdown {
    position: absolute;
    background-color: #2a2a2a;
    min-width: 120px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.5);
    z-index: 1;
    display: none;
    top: 100%;
    left: 0;
    border-radius: 5px;
    overflow: hidden;
}

.lang-dropdown li a {
    color: var(--nav-link-color);
    padding: 10px 15px;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.lang-dropdown li a:hover {
    background-color: #3a3a3a;
    color: var(--nav-link-hover);
}

.language-selector:hover .lang-dropdown {
    display: block;
}

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

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

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

.navbar-brand .brand-logo {
    height: 50px; /* Adjust as needed */
    width: auto;
    filter: brightness(1.2); /* Make it pop on dark background */
}

.main-navigation {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    gap: 25px;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--nav-link-color);
    font-weight: bold;
    padding: 10px 0;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-end);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--nav-link-hover);
}

.dropdown-toggle {
    display: flex;
    align-items: center;
}

.dropdown-toggle .arrow-down {
    margin-left: 5px;
    border: solid var(--nav-link-color);
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    transition: transform 0.3s ease;
}

.nav-item.dropdown:hover .dropdown-toggle .arrow-down {
    transform: rotate(225deg);
}

.dropdown-menu {
    position: absolute;
    background-color: #2a2a2a;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.5);
    z-index: 100;
    display: none;
    top: 100%;
    left: 0;
    border-radius: 5px;
    overflow: hidden;
}

.dropdown-menu li a {
    color: var(--nav-link-color);
    padding: 12px 15px;
    display: block;
    text-decoration: none;
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    background-color: #3a3a3a;
    color: var(--nav-link-hover);
}

.nav-item.dropdown:hover .dropdown-menu {
    display: block;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle .bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--nav-link-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Marquee Section */
.marquee-section {
    background-color: var(--marquee-bg);
    padding: 10px 0;
    color: var(--marquee-text);
    overflow: hidden;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.marquee-container {
    display: flex;
    align-items: center;
    white-space: nowrap;
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.marquee-icon {
    font-size: 1.5em;
    margin-right: 15px;
    color: var(--gradient-end);
    flex-shrink: 0;
}

.marquee-wrapper {
    overflow: hidden;
    flex-grow: 1;
}

.marquee-content {
    display: inline-block;
    padding-left: 100%; /* Start off-screen */
    animation: marquee 25s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); }
}


/* Footer */
.main-footer {
    background-color: var(--footer-bg);
    color: #ccc;
    padding: 40px 0 20px;
    font-size: 0.9em;
    border-top: 5px solid var(--gradient-end); /* Accent border */
}

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

.footer-col h3 {
    color: var(--nav-link-hover);
    margin-bottom: 20px;
    font-size: 1.2em;
    position: relative;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 50px;
    height: 2px;
    background: var(--gradient-start);
}

.footer-col p {
    margin-bottom: 15px;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

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

.footer-col ul li a:hover {
    color: var(--nav-link-hover);
}

.footer-logo img {
    max-width: 180px;
    margin-bottom: 15px;
    filter: brightness(1.2);
}

.social-links a {
    color: #fff;
    font-size: 1.5em;
    margin-right: 15px;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--gradient-end);
}

.contact-col i {
    margin-right: 8px;
    color: var(--gradient-start);
}

.payment-methods {
    margin-top: 20px;
}

.payment-methods h4 {
    color: #fff;
    margin-bottom: 10px;
}

.payment-methods img {
    height: 30px;
    margin-right: 10px;
    filter: grayscale(0.5) brightness(0.8);
    transition: filter 0.3s ease;
}

.payment-methods img:hover {
    filter: grayscale(0) brightness(1);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 20px;
    text-align: center;
}

.license-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.license-info img {
    height: 40px;
    filter: grayscale(0.7) brightness(0.8);
}

.copyright {
    color: #aaa;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: #2a2a2a;
        position: absolute;
        top: 100%;
        left: 0;
        padding: 10px 0;
        box-shadow: 0 8px 16px rgba(0,0,0,0.5);
    }

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

    .nav-item {
        width: 100%;
    }

    .nav-link {
        padding: 12px 20px;
        width: 100%;
        display: block;
    }
    
    .nav-link::after {
        display: none; /* Hide underline on mobile */
    }

    .nav-link:hover,
    .nav-link.active {
        background-color: #3a3a3a;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        background-color: #3a3a3a;
        box-shadow: none;
        border-radius: 0;
        padding-left: 20px;
    }

    .dropdown-menu li a {
        padding-left: 30px;
    }

    .menu-toggle {
        display: block;
    }

    .header-main-nav .container {
        flex-wrap: nowrap;
    }

    .main-navigation {
        position: relative;
    }
}

@media (max-width: 768px) {
    .header-top-bar .container,
    .marquee-container {
        flex-direction: column;
        text-align: center;
    }
    .top-bar-content {
        flex-direction: column;
        gap: 10px;
    }
    .user-actions {
        margin-top: 10px;
    }
    .marquee-icon {
        margin-right: 0;
        margin-bottom: 5px;
    }
    .marquee-content {
        animation-duration: 20s; /* Adjust speed for smaller screens */
    }
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .footer-col h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    .social-links {
        justify-content: center;
        display: flex;
    }
    .contact-col p {
        text-align: center;
    }
    .payment-methods {
        text-align: center;
    }
}
/* 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;
  }
}