/* roulang page: index */
:root {
            --primary: #ff4757;
            --dark: #1e1e26;
            --light: #ffffff;
            --gray: #f4f4f7;
            --text: #333;
            --radius: 12px;
            --shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--gray); color: var(--text); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* 导航 */
        header { background: var(--dark); color: var(--light); padding: 20px 0; }
        nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: bold; color: var(--primary); text-decoration: none; }
        .nav-links a { color: var(--light); text-decoration: none; margin-left: 20px; transition: 0.3s; }
        .nav-links a:hover, .nav-links a.active { color: var(--primary); }

        /* 首屏 */
        .hero { background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-1.webp') no-repeat center/cover; padding: 100px 20px; text-align: center; color: white; }
        .hero h1 { font-size: 48px; margin-bottom: 20px; }
        
        /* 板块 */
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
        .card { background: white; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: 0.3s; }
        .card:hover { transform: translateY(-10px); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 16px; }

        /* 页脚 */
        footer { background: var(--dark); color: #999; text-align: center; padding: 40px 0; margin-top: 40px; }

/* roulang page: category1 */
:root {
            --primary: #ff3e6c;
            --dark: #121212;
            --light: #ffffff;
            --gray: #f4f4f4;
            --text: #333;
            --radius: 12px;
            --shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #fafafa; color: var(--text); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        header { background: var(--dark); padding: 15px 0; color: var(--light); position: sticky; top: 0; z-index: 1000; }
        .nav { display: flex; align-items: center; justify-content: space-between; }
        .logo { font-size: 24px; font-weight: bold; color: var(--primary); text-decoration: none; }
        .nav-links a { color: #ccc; text-decoration: none; margin-left: 20px; transition: 0.3s; }
        .nav-links a.active { color: var(--light); font-weight: bold; }
        
        .hero { padding: 80px 0; background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('/assets/images/backpic/back-1.webp') center/cover; color: white; text-align: center; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; }
        
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .card { background: white; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: 0.3s; }
        .card:hover { transform: translateY(-10px); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        
        .faq { background: var(--gray); padding: 60px 0; }
        .faq-item { margin-bottom: 20px; background: white; padding: 20px; border-radius: var(--radius); }
        
        .cta { background: var(--primary); color: white; padding: 60px 0; text-align: center; }
        .btn { display: inline-block; padding: 15px 40px; background: white; color: var(--primary); border-radius: 50px; font-weight: bold; text-decoration: none; margin-top: 20px; }
        
        footer { padding: 40px 0; text-align: center; background: var(--dark); color: #888; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: article */
:root {
            --primary: #ff4757;
            --dark: #1a1a1a;
            --light: #f4f4f4;
            --text: #333;
            --accent: #ff6b81;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0,0,0,0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; background: #fff; color: var(--text); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: var(--dark); padding: 15px 0; position: sticky; top: 0; z-index: 1000; }
        .nav { display: flex; align-items: center; justify-content: space-between; }
        .logo { color: #fff; font-size: 24px; font-weight: bold; text-decoration: none; }
        .nav-links a { color: #ccc; text-decoration: none; margin-left: 20px; transition: 0.3s; }
        .nav-links a:hover, .nav-links a.active { color: #fff; }
        .main-content { padding: 60px 0; min-height: 60vh; }
        .article-card { background: #fff; border: 1px solid #eee; padding: 40px; border-radius: var(--radius); box-shadow: var(--shadow); }
        h1 { font-size: 2.5rem; margin-bottom: 20px; color: var(--dark); }
        .meta { color: #888; margin-bottom: 30px; font-size: 0.9rem; }
        .content-body { font-size: 1.1rem; color: #444; }
        .content-body img { max-width: 100%; border-radius: var(--radius); margin: 20px 0; }
        footer { background: var(--dark); color: #888; text-align: center; padding: 40px 0; margin-top: 60px; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: category2 */
:root {
            --primary-color: #ff3e76;
            --dark-bg: #0f0f12;
            --card-bg: #1a1a1f;
            --text-main: #ffffff;
            --text-sub: #a0a0a0;
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--dark-bg); color: var(--text-main); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: rgba(20, 20, 25, 0.95); padding: 20px 0; border-bottom: 1px solid #333; position: sticky; top: 0; z-index: 100; }
        .nav { display: flex; align-items: center; justify-content: space-between; }
        .logo { font-size: 24px; font-weight: bold; color: var(--primary-color); text-decoration: none; }
        .nav-links a { color: var(--text-main); text-decoration: none; margin-left: 20px; padding: 8px 12px; transition: var(--transition); border-radius: 6px; }
        .nav-links a.active, .nav-links a:hover { background: var(--primary-color); }
        .hero { padding: 80px 0; text-align: center; background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-1.webp') center/cover; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; }
        .content-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 25px; padding: 50px 0; }
        .card { background: var(--card-bg); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
        .card:hover { transform: translateY(-10px); box-shadow: 0 10px 20px rgba(0,0,0,0.5); }
        .card img { width: 100%; height: 180px; object-fit: cover; }
        .card-body { padding: 15px; }
        .card-body h3 { margin-bottom: 10px; font-size: 1.1rem; }
        footer { padding: 40px 0; text-align: center; border-top: 1px solid #333; margin-top: 50px; color: var(--text-sub); }

/* roulang page: category3 */
:root {
            --primary: #ff4757;
            --dark: #1e272e;
            --light: #f1f2f6;
            --white: #ffffff;
            --gray: #747d8c;
            --radius: 12px;
            --shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: var(--light); color: var(--dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: var(--white); padding: 15px 0; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: bold; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; text-decoration: none; color: var(--dark); font-weight: 500; transition: color 0.3s; }
        .nav-links a.active { color: var(--primary); }
        .banner { background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-1.webp') center/cover; padding: 80px 20px; text-align: center; color: var(--white); }
        .banner h1 { font-size: 3rem; margin-bottom: 20px; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; padding: 50px 0; }
        .card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.3s; }
        .card:hover { transform: translateY(-10px); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        .card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: var(--white); border-radius: 30px; text-decoration: none; font-weight: bold; margin-top: 15px; }
        footer { background: var(--dark); color: var(--white); text-align: center; padding: 40px 0; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: category4 */
:root {
            --primary-color: #ff3e6c;
            --secondary-color: #1a1a1a;
            --text-color: #333;
            --light-text: #666;
            --bg-color: #f9f9f9;
            --white: #ffffff;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background: var(--bg-color); color: var(--text-color); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: var(--white); padding: 15px 0; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 1000; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.5rem; font-weight: bold; color: var(--primary-color); text-decoration: none; }
        .nav-links a { margin-left: 20px; text-decoration: none; color: var(--text-color); font-weight: 500; transition: 0.3s; }
        .nav-links a.active { color: var(--primary-color); }
        .banner { height: 300px; background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('/assets/images/backpic/back-1.webp') center/cover; display: flex; align-items: center; justify-content: center; color: var(--white); text-align: center; }
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .card img { width: 100%; height: 180px; object-fit: cover; }
        .card-body { padding: 20px; }
        .card-title { font-size: 1.1rem; margin-bottom: 10px; }
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary-color); color: var(--white); border-radius: 50px; text-decoration: none; font-weight: bold; }
        footer { padding: 40px 0; background: var(--secondary-color); color: #ccc; text-align: center; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: category5 */
:root {
            --primary-color: #ff3e76;
            --secondary-color: #1a1a1a;
            --bg-color: #0f0f0f;
            --text-color: #ffffff;
            --light-text: #a0a0a0;
            --border-color: #333333;
            --radius: 12px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', sans-serif; background: var(--bg-color); color: var(--text-color); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        header { background: rgba(0,0,0,0.9); border-bottom: 1px solid var(--border-color); padding: 15px 0; position: sticky; top: 0; z-index: 100; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: bold; color: var(--primary-color); text-decoration: none; }
        .nav-links a { color: var(--text-color); text-decoration: none; margin-left: 20px; padding: 8px 12px; transition: 0.3s; }
        .nav-links a:hover, .nav-links a.active { color: var(--primary-color); }
        
        .hero { padding: 80px 0; background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('/assets/images/backpic/back-1.webp') no-repeat center center/cover; text-align: center; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; }
        
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .card { background: var(--secondary-color); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); transition: 0.3s; }
        .card:hover { transform: translateY(-10px); border-color: var(--primary-color); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary-color); color: #fff; border-radius: 50px; text-decoration: none; font-weight: bold; }
        
        footer { background: #000; padding: 40px 0; text-align: center; border-top: 1px solid var(--border-color); margin-top: 40px; }
        @media (max-width: 768px) { .nav-links { display: none; } .hero h1 { font-size: 2rem; } }