/* roulang page: index */
:root {
            --primary: #e11d48;
            --dark: #0f172a;
            --light: #f8fafc;
            --text: #334155;
            --radius: 12px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.6; color: var(--text); background: var(--light); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 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: 1.5rem; font-weight: bold; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; text-decoration: none; color: var(--text); font-weight: 500; }
        .hero { padding: 80px 0; background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-1.webp') center/cover; color: #fff; text-align: center; }
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin: 40px 0; }
        .card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 6px rgba(0,0,0,0.1); transition: 0.3s; }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: #fff; border-radius: 5px; text-decoration: none; margin-top: 15px; }
        footer { padding: 40px 0; text-align: center; background: var(--dark); color: #fff; }

/* roulang page: article */
:root {
            --primary: #d946ef;
            --secondary: #701a75;
            --text: #1f2937;
            --light: #f9fafb;
            --border: #e5e7eb;
            --radius: 12px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--text); line-height: 1.6; background: var(--light); }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        
        header { background: #fff; border-bottom: 1px solid var(--border); padding: 15px 0; position: sticky; top: 0; z-index: 100; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.5rem; font-weight: bold; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; text-decoration: none; color: var(--text); font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover { color: var(--primary); }
        
        .main-content { padding: 40px 0; min-height: 60vh; }
        .article-card { background: #fff; padding: 40px; border-radius: var(--radius); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
        h1 { font-size: 2.5rem; margin-bottom: 20px; color: var(--secondary); }
        .meta-info { color: #6b7280; font-size: 0.9rem; margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
        .content-body img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 20px 0; }
        
        footer { background: #111; color: #fff; padding: 40px 0; text-align: center; margin-top: 60px; }
        .footer-link { color: #d1d5db; text-decoration: none; }
        
        @media (max-width: 768px) {
            .nav-links { display: none; }
            h1 { font-size: 1.8rem; }
        }

/* roulang page: category1 */
:root { --primary: #e11d48; --dark: #1f2937; --light: #f9fafb; --accent: #f472b6; --gray: #6b7280; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; line-height: 1.6; color: var(--dark); background: var(--light); }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; border-bottom: 1px solid #e5e7eb; padding: 20px 0; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.5rem; font-weight: bold; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; color: var(--gray); text-decoration: none; font-size: 0.95rem; }
        .nav-links a[data-slug="intimacy-guide"] { color: var(--primary); font-weight: bold; }
        .banner { background: url('/assets/images/backpic/back-1.webp') center/cover; padding: 80px 20px; text-align: center; color: #fff; border-radius: 0 0 40px 40px; }
        .hero-title { font-size: 2.5rem; margin-bottom: 20px; text-shadow: 0 2px 4px rgba(0,0,0,0.3); }
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .card { background: #fff; padding: 25px; border-radius: 16px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
        .btn { display: inline-block; padding: 12px 24px; background: var(--primary); color: #fff; border-radius: 8px; text-decoration: none; transition: 0.3s; }
        .btn:hover { background: #be123c; }
        footer { padding: 40px 0; border-top: 1px solid #e5e7eb; text-align: center; color: var(--gray); font-size: 0.85rem; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: category2 */
:root {
            --primary: #d946ef;
            --secondary: #8b5cf6;
            --bg: #fdfcfd;
            --text: #1f2937;
            --light: #f3f4f6;
            --dark: #111827;
            --radius: 12px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 0; border-bottom: 1px solid #e5e7eb; position: sticky; top: 0; z-index: 1000; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; text-decoration: none; color: var(--text); font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover, .nav-links a.active { color: var(--primary); }
        .hero { padding: 80px 0; background: linear-gradient(135deg, #fdfcfd 0%, #fef3f7 100%); text-align: center; }
        .hero h1 { font-size: 2.5rem; margin-bottom: 20px; color: var(--dark); }
        .content-block { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
        .card { background: #fff; border-radius: var(--radius); padding: 20px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .card img { width: 100%; height: 200px; object-fit: cover; border-radius: 8px; margin-bottom: 15px; }
        footer { background: var(--dark); color: #fff; padding: 40px 0; text-align: center; margin-top: 60px; }
        .btn { display: inline-block; padding: 12px 24px; background: var(--primary); color: #fff; border-radius: var(--radius); text-decoration: none; font-weight: bold; margin-top: 20px; }

/* roulang page: category3 */
:root {
            --primary: #d946ef;
            --dark: #1f2937;
            --light: #f9fafb;
            --accent: #f472b6;
            --text: #374151;
            --radius: 12px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', sans-serif; color: var(--text); line-height: 1.6; background: #fff; }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 0; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 100; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-weight: bold; font-size: 1.25rem; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; color: var(--text); text-decoration: none; font-size: 0.95rem; }
        .nav-links a:hover, .nav-links a.active { color: var(--primary); }
        .banner { padding: 80px 0; background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-2.webp') center/cover; color: #fff; text-align: center; border-radius: var(--radius); margin-top: 20px; }
        .section { padding: 60px 0; }
        h1 { font-size: 2.5rem; margin-bottom: 20px; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .card { border: 1px solid #e5e7eb; border-radius: var(--radius); overflow: hidden; transition: 0.3s; }
        .card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        .btn { display: inline-block; padding: 12px 24px; background: var(--primary); color: #fff; text-decoration: none; border-radius: 50px; margin-top: 20px; }
        footer { padding: 40px 0; background: var(--light); text-align: center; margin-top: 60px; font-size: 0.85rem; color: #6b7280; }

/* roulang page: category4 */
:root {
            --primary-color: #e91e63;
            --secondary-color: #880e4f;
            --bg-color: #f8f9fa;
            --text-color: #333;
            --light-text: #666;
            --white: #ffffff;
            --border-radius: 12px;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--bg-color); color: var(--text-color); line-height: 1.6; }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        
        /* Nav */
        header { background: var(--white); padding: 20px 0; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
        .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; color: var(--text-color); text-decoration: none; font-weight: 500; }
        .nav-links a.active { color: var(--primary-color); border-bottom: 2px solid var(--primary-color); }

        /* Banner */
        .banner { padding: 60px 20px; background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-2.webp') center/cover; color: white; text-align: center; border-radius: 0 0 40px 40px; }
        .banner h1 { font-size: 2.5rem; margin-bottom: 15px; }

        /* Content */
        .main-content { padding: 60px 0; }
        .intro-box { background: var(--white); padding: 40px; border-radius: var(--border-radius); box-shadow: var(--shadow); margin-bottom: 40px; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .card { background: var(--white); padding: 25px; border-radius: var(--border-radius); box-shadow: var(--shadow); transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .card img { width: 100%; height: 200px; object-fit: cover; border-radius: 8px; margin-bottom: 15px; }
        
        /* FAQ */
        .faq-section { margin-top: 60px; padding: 40px; background: #fff; border-radius: var(--border-radius); }
        
        footer { padding: 40px 0; text-align: center; color: var(--light-text); border-top: 1px solid #eee; margin-top: 40px; }

/* roulang page: category5 */
:root {
            --primary-color: #e63946;
            --secondary-color: #1d3557;
            --text-color: #333;
            --bg-color: #f8f9fa;
            --white: #ffffff;
            --border-radius: 12px;
            --shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; line-height: 1.6; color: var(--text-color); background: var(--bg-color); }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        header { background: var(--white); padding: 20px 0; box-shadow: var(--shadow); 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(--secondary-color); font-weight: 500; padding: 5px 10px; transition: 0.3s; }
        .nav-links a.active, .nav-links a:hover { color: var(--primary-color); border-bottom: 2px solid var(--primary-color); }
        
        .hero { padding: 80px 0; text-align: center; background: linear-gradient(rgba(29, 53, 87, 0.8), rgba(29, 53, 87, 0.8)), url('/assets/images/backpic/back-1.webp') center/cover; color: var(--white); }
        .hero h1 { font-size: 2.5rem; margin-bottom: 20px; }
        
        .content-section { padding: 60px 0; }
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
        .card { background: var(--white); padding: 20px; border-radius: var(--border-radius); box-shadow: var(--shadow); transition: 0.3s; }
        .card:hover { transform: translateY(-10px); }
        .card img { width: 100%; height: 200px; object-fit: cover; border-radius: 8px; margin-bottom: 15px; }
        
        .faq-section { background: var(--white); padding: 60px 0; }
        .faq-item { margin-bottom: 30px; border-left: 4px solid var(--primary-color); padding-left: 20px; }
        
        footer { padding: 40px 0; text-align: center; background: var(--secondary-color); color: #fff; margin-top: 60px; }
        @media (max-width: 768px) { .nav { flex-direction: column; } .nav-links { margin-top: 15px; } }