/* 响应式布局 + 黑白高端风格 + 金边 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;700&display=swap');

:root {
    --font-family: 'Noto Sans SC', sans-serif;
    --color-bg: #fff;
    --color-text: #000;
    --color-primary-bg: #000;
    --color-primary-text: #fff;
    --color-accent: #D4AF37;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0 0 60px;  /* 底部留出空间给固定 footer */
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* 汉堡菜单按钮 - 默认隐藏 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5em;
    color: var(--color-primary-text);
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.menu-toggle:hover {
    background-color: rgba(255,255,255,0.1);
}

/* 顶部导航：网格布局，实现多行居中 */
.navbar {
    width: 100%;
    background-color: var(--color-primary-bg);
    color: var(--color-primary-text);
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    grid-template-areas:
        "logo nav toggle"
        "subtitle nav toggle";
    align-items: center;
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--color-accent);
}
.navbar .logo {
    grid-area: logo;
    font-size: 1.5em;
    font-weight: 700;
    color: var(--color-primary-text);
    text-decoration: none;
    margin: 0;
}
.navbar .nav-links {
    grid-area: nav;
    display: flex;
    gap: 8px;
    justify-self: end;
}
.navbar .nav-links a {
    color: var(--color-primary-text);
    text-decoration: none;
    font-weight: 500;
    padding: 5px 8px;
    transition: color 0.3s, background 0.3s;
    border-radius: 4px;
}
.navbar .nav-links a:hover {
    color: var(--color-primary-bg);
    background-color: var(--color-accent);
}
.navbar .subtitle {
    grid-area: subtitle;
    font-size: 0.85em;
    color: var(--color-primary-text);
    margin: 8px 0 0 0;
}

.navbar .menu-toggle {
    grid-area: toggle;
    justify-self: start; /* 在移动端靠左对齐 */
    display: none; /* 确保在桌面端隐藏 */
}

/* 头部区域 */
.header {
    display: flex;
    flex-wrap: wrap;
    background-color: var(--color-primary-bg);
    color: var(--color-primary-text);
    padding: 40px 20px;
}
.header-left, .header-right {
    flex: 1;
    min-width: 280px;
}
.header-left {
    padding-right: 20px;
}
.header-left h1 {
    font-size: 2.5em;
    margin: 0 0 10px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}
.header-left h2 {
    font-size: 1em;
    margin: 0;
    line-height: 1.5;
    opacity: 0.85;
}
.header-right {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
    padding-left: 20px;
}
.header-right a:hover {
    border-color: var(--color-accent);
    background-color: rgba(212,175,55,0.1);
}

/* 容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* 轮播 */
.carousel {
    position: relative;
    width: 100%; max-width: 800px; margin: 20px auto;
    overflow: hidden;
    border: 3px solid var(--color-accent);
    border-radius: 8px;
}
.carousel img { width: 100%; height: auto; object-fit: contain; display: block; }
.carousel-caption { display: none; }
.carousel-button { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(0,0,0,0.6); border: none; color: var(--color-accent); font-size: 1.8em; padding: 0.2em 0.5em; cursor: pointer; z-index: 10; border-radius: 4px; }
.carousel-button.left { left: 10px; }
.carousel-button.right { right: 10px; }
.carousel-indicators { position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; }
.carousel-indicators span { width: 12px; height: 12px; background: rgba(255,255,255,0.5); border-radius: 50%; cursor: pointer; transition: background 0.3s; }
.carousel-indicators .active { background: var(--color-accent); }


/* 内容区高端大气样式 */
/* 内容区高端卡片式样式 */
.article-content {
  background-color: #f9f9f9;
  border-left: 4px solid var(--color-accent);
  padding: 24px 32px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  margin-bottom: 40px;
}
.article-content .article-title {
  font-size: 1.5em;
  margin-bottom: 16px;
  color: var(--color-accent);
  font-weight: 700;
}
.article-content p {
  font-size: 1.1em;
  line-height: 1.8;
  color: #333;
  text-indent: 2em;
  margin-bottom: 1.2em;
}
.article-content p:last-child {
  margin-bottom: 0;
}
.article-content .highlight {
  color: var(--color-accent);
  font-weight: 600;
}
.site-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-primary-bg);
    color: var(--color-primary-text);
    text-align: center;
    padding: 2px 0;
    font-size: 0.65em;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.btn {
    display: inline-block;
    padding: 4px 12px;           /* 缩小垂直内边距，使高度与输入框一致 */
    background-color: var(--color-accent);
    color: var(--color-primary-bg);
    text-decoration: none;
    font-weight: 500;
    font-size: 1em;              /* 与输入框文字大小一致 */
    line-height: 1.5em;          /* 保持按钮文本居中 */
    border-radius: 4px;
    transition: background-color 0.3s;
}
.btn:hover {
    background-color: #FFD700;  /* 更亮的金色 */
    color: var(--color-primary-bg);
}
/* 用于包含按钮的段落不缩进 */
/* 用于包含按钮的段落不缩进 */
p.no-indent {
    text-indent: 0;
    margin: 0;
}

/* 居中容器 - 使用 Flexbox 水平居中按钮 */
.center-block {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 0;
}

/* 认证页面样式 */
.auth-container {
    max-width: 500px;
    margin: 40px auto;
    padding: 30px;
    background-color: #f9f9f9;
    border-left: 4px solid var(--color-accent);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.auth-container h2 {
    text-align: center;
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: 30px;
    font-size: 1.8em;
}

.auth-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212,175,55,0.1);
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-primary-bg);
    border: none;
    padding: 12px 24px;
    font-size: 1.1em;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
}

.btn-primary:hover {
    background-color: #FFD700;
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.2em;
}

.auth-links {
    text-align: center;
    margin-top: 20px;
}

/* 强制统一所有导航栏链接样式 */
.navbar a,
.navbar .nav-links a,
.navbar #nav-links a,
.navbar .nav-links #auth-links a,
.navbar #auth-links a,
#nav-links #auth-links a {
    color: var(--color-primary-text) !important;
    text-decoration: none !important;
    font-weight: 500 !important;
    padding: 5px 8px !important;
    transition: color 0.3s, background 0.3s !important;
    border-radius: 4px !important;
    display: inline-block !important;
    margin: 0 !important;
}

.navbar a:hover,
.navbar .nav-links a:hover,
.navbar #nav-links a:hover,
.navbar .nav-links #auth-links a:hover,
.navbar #auth-links a:hover,
#nav-links #auth-links a:hover {
    color: var(--color-primary-bg) !important;
    background-color: var(--color-accent) !important;
    text-decoration: none !important;
}

/* 认证页面中的认证链接样式 */
.auth-container .auth-links a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
}

.auth-container .auth-links a:hover {
    text-decoration: underline;
}

/* 会员页面样式 */
.membership-info {
    background-color: #fff;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    border: 2px solid #eee;
}

.membership-info h3 {
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.membership-info ul {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.membership-info li {
    padding: 8px 0;
    font-size: 1.1em;
    color: #333;
}

.price-info {
    text-align: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 6px;
    border: 2px solid var(--color-accent);
}

.price-info h4 {
    color: var(--color-accent);
    font-size: 1.5em;
    font-weight: 700;
    margin-bottom: 10px;
}

.price-info p {
    color: #666;
    margin: 0;
}

/* 警告消息样式 */
.alert {
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: 6px;
    font-weight: 500;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 显示汉堡菜单按钮 */
    .menu-toggle,
    .navbar .menu-toggle {
        display: block !important;
    }
    
    /* 调整导航栏布局 - 汉堡按钮在左边 */
    .navbar {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "toggle logo"
            "nav nav";
    }
    
    .navbar .logo {
        justify-self: center;
        text-align: center;
    }
    
    .navbar .subtitle {
        display: none; /* 在移动端隐藏副标题以节省空间 */
    }
    
    /* 导航链接样式 - 横向展示 */
    .navbar .nav-links {
        display: none;
        flex-direction: row;
        flex-wrap: wrap;
        background-color: var(--color-primary-bg);
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        border-top: 1px solid rgba(255,255,255,0.1);
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        padding: 10px;
        gap: 8px;
        justify-content: center;
    }
    
    .navbar .nav-links.show {
        display: flex;
    }
    
    .navbar .nav-links a {
        padding: 8px 12px;
        border: 1px solid rgba(255,255,255,0.2);
        border-radius: 4px;
        text-align: center;
        font-size: 0.9em;
        white-space: nowrap;
        min-width: fit-content;
    }
    
    .navbar .nav-links a:hover {
        background-color: var(--color-accent);
        color: var(--color-primary-bg);
        border-color: var(--color-accent);
    }
    
    .carousel { max-width: 95vw; margin: 10px auto; }
    .header { flex-direction: column; text-align: center; }
    .header-left, .header-right { padding: 10px 0; }
    
    .auth-container {
        margin: 20px;
        padding: 20px;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .membership-info {
        padding: 15px;
    }
}

/* 权限提示信息样式 */
.auth-message {
  background-color: #f8f9fa;
  border: 2px solid var(--color-accent);
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  margin: 20px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.auth-message h3 {
  color: var(--color-accent);
  font-size: 1.5em;
  margin-bottom: 15px;
  font-weight: 700;
}

.auth-message p {
  color: #666;
  font-size: 1.1em;
  line-height: 1.6;
  margin-bottom: 20px;
  text-indent: 0;
}

.auth-message .btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: 1.1em;
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.auth-message .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(212,175,55,0.3);
}