/* roulang page: index */
:root {
            --primary: #e11d48;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --radius: 12px;
            --shadow: 0 4px 6px -1px rgb(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: var(--light); color: var(--dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        header { background: #fff; padding: 20px 0; box-shadow: var(--shadow); position: sticky; top: 0; z-index: 100; }
        nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: 800; color: var(--primary); text-decoration: none; }
        .nav-links { display: flex; gap: 20px; }
        .nav-links a { text-decoration: none; color: var(--dark); font-weight: 500; }
        
        .hero { background: url('/assets/images/backpic/back-1.webp') center/cover; padding: 100px 20px; text-align: center; color: white; border-radius: 0 0 40px 40px; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; }
        
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; margin-top: 40px; }
        .card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .card img { width: 100%; height: 180px; object-fit: cover; }
        .card-content { padding: 15px; }
        
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: white; border-radius: 50px; text-decoration: none; font-weight: bold; }
        
        footer { padding: 40px 0; text-align: center; color: var(--gray); font-size: 0.9rem; }

/* roulang page: category1 */
:root {
            --primary: #e11d48;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --radius: 12px;
            --shadow: 0 4px 6px -1px 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: var(--light); color: var(--dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 0; border-bottom: 1px solid #e2e8f0; }
        .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; color: var(--dark); text-decoration: none; font-weight: 500; }
        .nav-links a:hover, .nav-links a[data-slug="high-quality"] { color: var(--primary); }
        .hero { padding: 80px 0; background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('/assets/images/backpic/back-2.webp') center/cover; color: #fff; text-align: center; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; padding: 60px 0; }
        .card { background: #fff; 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; }
        .card h3 { font-size: 1.25rem; margin-bottom: 10px; }
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: #fff; border-radius: var(--radius); text-decoration: none; margin-top: 15px; }
        footer { background: var(--dark); color: #94a3b8; text-align: center; padding: 40px 0; }

/* roulang page: article */
:root {
            --primary: #e11d48;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --radius: 12px;
            --shadow: 0 4px 6px -1px 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: var(--light); color: var(--dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 0; box-shadow: var(--shadow); }
        .nav { display: flex; align-items: center; justify-content: space-between; }
        .logo { font-size: 24px; font-weight: 800; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; color: var(--dark); text-decoration: none; font-weight: 500; }
        .nav-links a:hover { color: var(--primary); }
        .hero { padding: 60px 0; 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; color: #fff; text-align: center; border-radius: 0 0 40px 40px; }
        .article-main { padding: 40px 0; min-height: 600px; }
        .content-box { background: #fff; padding: 40px; border-radius: var(--radius); box-shadow: var(--shadow); }
        .footer { padding: 40px 0; background: var(--dark); color: #94a3b8; text-align: center; margin-top: 40px; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: category2 */
:root {
            --primary: #d946ef;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --accent: #f472b6;
            --radius: 12px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--light); color: var(--dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        header { background: #fff; border-bottom: 1px solid #e2e8f0; padding: 1rem 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: 800; color: var(--primary); text-decoration: none; }
        .nav-links a { margin-left: 20px; color: var(--gray); text-decoration: none; font-weight: 500; transition: 0.3s; }
        .nav-links a:hover, .nav-links a.active { color: var(--primary); }

        .hero { padding: 80px 0; background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('/assets/images/backpic/back-1.webp'); background-size: cover; color: #fff; text-align: center; border-radius: 0 0 40px 40px; }
        .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: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 6px rgba(0,0,0,0.1); transition: 0.3s; }
        .card:hover { transform: translateY(-10px); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary); color: #fff; border-radius: var(--radius); text-decoration: none; margin-top: 20px; }
        
        footer { background: var(--dark); color: #fff; padding: 40px 0; text-align: center; margin-top: 60px; }

/* roulang page: category3 */
:root {
            --primary: #e11d48;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --radius: 12px;
            --shadow: 0 4px 6px -1px 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: var(--light); color: var(--dark); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: #fff; padding: 20px 0; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z-index: 100; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: 800; 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[data-slug="new-release"] { color: var(--primary); }
        .hero { background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/assets/images/backpic/back-3.webp') center/cover; padding: 80px 0; color: #fff; 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: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        .faq-item { background: #fff; padding: 20px; border-radius: var(--radius); margin-bottom: 15px; }
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary); color: #fff; border-radius: 30px; text-decoration: none; font-weight: bold; }
        footer { background: var(--dark); color: #fff; padding: 40px 0; text-align: center; }
        @media (max-width: 768px) { .nav-links { display: none; } }

/* roulang page: category4 */
:root {
            --primary: #d946ef;
            --dark: #0f172a;
            --light: #f8fafc;
            --accent: #f472b6;
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', sans-serif; background: var(--dark); color: var(--light); line-height: 1.6; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { background: rgba(15, 23, 42, 0.95); border-bottom: 1px solid #334155; position: sticky; top: 0; z-index: 1000; padding: 15px 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; font-size: 15px; transition: var(--transition); }
        .nav-links a:hover, .nav-links a.active { color: var(--primary); }
        .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-2.webp'); background-size: cover; background-position: center; border-radius: 0 0 40px 40px; }
        .hero h1 { font-size: 3rem; margin-bottom: 20px; }
        .content-section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .card { background: #1e293b; border-radius: var(--radius); overflow: hidden; transition: var(--transition); border: 1px solid #334155; }
        .card:hover { transform: translateY(-10px); border-color: var(--primary); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 20px; }
        .faq { margin-top: 60px; background: #1e293b; padding: 40px; border-radius: var(--radius); }
        footer { padding: 40px 0; text-align: center; border-top: 1px solid #334155; margin-top: 60px; }

/* roulang page: category5 */
:root {
            --primary: #e63946;
            --dark: #1d3557;
            --light: #f1faee;
            --accent: #a8dadc;
            --text: #333;
            --gray: #666;
            --radius: 8px;
            --shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Helvetica Neue', 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: 1rem 0; color: #fff; }
        .nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.5rem; font-weight: bold; color: var(--accent); text-decoration: none; }
        .nav-links a { color: #fff; text-decoration: none; margin-left: 20px; opacity: 0.8; transition: 0.3s; }
        .nav-links a:hover, .nav-links a.active { opacity: 1; color: var(--accent); }
        .hero { padding: 80px 20px; background: linear-gradient(rgba(29, 53, 87, 0.8), rgba(29, 53, 87, 0.8)), url('/assets/images/backpic/back-3.webp') center/cover; color: #fff; text-align: center; }
        .hero h1 { font-size: 2.5rem; margin-bottom: 20px; }
        .section { padding: 60px 0; }
        .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .card { border: 1px solid #ddd; border-radius: var(--radius); overflow: hidden; transition: 0.3s; }
        .card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 15px; }
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: #fff; border-radius: var(--radius); text-decoration: none; margin-top: 20px; }
        footer { background: #f8f9fa; padding: 40px 0; text-align: center; border-top: 1px solid #eee; margin-top: 40px; }
        @media (max-width: 768px) { .nav-links { display: none; } }