@font-face {
      font-family: 'Roboto'; font-style: normal; font-weight: 400; font-display: swap;
      src: url('assets/font/roboto-v48-latin-regular.woff2') format('woff2');
    }
    @font-face {
      font-family: 'Roboto'; font-style: normal; font-weight: 500; font-display: swap;
      src: url('assets/font/roboto-v48-latin-500.woff2') format('woff2');
    }
    @font-face {
      font-family: 'Roboto'; font-style: normal; font-weight: 700; font-display: swap;
      src: url('assets/font/roboto-v48-latin-700.woff2') format('woff2');
    }
    :root{--primary-color:#c62828;--secondary-color:#1565C0;--light-bg:#fdfdff;--card-bg:#ffffff;--text-primary:#1a202c;--text-secondary:#5a6270;--border-color:#e2e8f0;--font-family:'Roboto', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;--shadow-sm:0 4px 6px -1px rgba(0,0,0,.05),0 2px 4px -1px rgba(0,0,0,.03);--shadow-md:0 10px 15px -3px rgba(0,0,0,.07),0 4px 6px -2px rgba(0,0,0,.04);--shadow-lg:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);--transition-smooth:all .3s cubic-bezier(.25,.8,.25,1)}
    *{margin:0;padding:0;box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{font-family:var(--font-family);background-color:var(--light-bg);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
    .container{width:90%;max-width:1200px;margin:0 auto}
    section{padding:clamp(60px,10vh,100px) 0}
    h1,h2,h3{font-weight:700;line-height:1.2;color:var(--text-primary)}
    h1{font-size:clamp(2.2rem,5vw,3.5rem)}
    h2.section-title{text-align:center;font-size:clamp(2rem,4vw,2.8rem);margin-bottom:clamp(50px,8vw,80px);position:relative}
    h2.section-title::after{content:'';position:absolute;bottom:-15px;left:50%;transform:translateX(-50%);width:80px;height:4px;background:var(--primary-color);border-radius:2px}
    p{font-size:clamp(.95rem,1.5vw,1.1rem);color:var(--text-secondary)}
    header{background:rgba(255,255,255,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:15px 0;position:sticky;top:0;z-index:1000;border-bottom:1px solid var(--border-color)}
    .nav-container{display:flex;justify-content:space-between;align-items:center}
    .logo{font-size:clamp(1.5rem,3vw,1.8rem);font-weight:700;color:var(--text-primary);text-decoration:none}
    .logo span{color:var(--primary-color)}
    .main-nav{list-style:none;display:flex;gap:35px}
    .main-nav a{text-decoration:none;color:var(--text-secondary);font-weight:500;transition:color .3s;position:relative;padding-bottom:5px}
    .main-nav a::after{content:'';position:absolute;width:0;height:2px;bottom:0;left:50%;transform:translateX(-50%);background-color:var(--primary-color);transition:width .3s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--primary-color)}
    .main-nav a:hover::after,.main-nav a.active::after{width:100%}
    .nav-download-btn{background-image:linear-gradient(45deg,var(--secondary-color),#004ba0);color:#fff;padding:10px 25px;font-size:clamp(.9rem,1.2vw,1rem);border-radius:50px;text-decoration:none;font-weight:500;transition:var(--transition-smooth);box-shadow:var(--shadow-sm)}
    .nav-download-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
    .hamburger{display:none;cursor:pointer;flex-direction:column;gap:5px}
    .hamburger .bar{width:25px;height:3px;background-color:var(--text-primary);border-radius:2px;transition:all .3s}
    .hero-section{display:flex;align-items:center;padding-top:clamp(40px,8vh,80px);padding-bottom:clamp(60px,12vh,120px);gap:40px}
    .hero-content{flex:1.2;padding-right:20px}
    .hero-content .subtitle{font-size:clamp(1rem,2vw,1.25rem);margin:25px 0 40px;max-width:600px}
    .download-button{background-image:linear-gradient(45deg,var(--primary-color),#8e0000);color:#fff;padding:clamp(12px,2vw,16px) clamp(30px,4vw,40px);font-size:clamp(1rem,2.5vw,1.2rem);border-radius:50px;text-decoration:none;font-weight:600;display:inline-block;transition:var(--transition-smooth);box-shadow:var(--shadow-md)}
    .download-button:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
    .hero-image{flex:1;text-align:center}
    .hero-image img{max-width:100%;height:auto;aspect-ratio:1/1;}
    #how-it-works{background-color:var(--card-bg)}
    .steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px;text-align:center}
    .step-card .icon{font-size:3rem;color:var(--primary-color);line-height:1;margin-bottom:20px;font-weight:700}
    .step-card h3{margin-bottom:10px;font-size:clamp(1.2rem,2vw,1.4rem)}
    .features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}
    .feature-card{background:var(--card-bg);padding:clamp(25px,4vw,40px);border-radius:16px;text-align:center;border:1px solid var(--border-color);transition:var(--transition-smooth);box-shadow:var(--shadow-sm)}
    .feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}
    .feature-icon{font-size:3.5rem;color:var(--primary-color);margin-bottom:20px}
    .feature-card h3{font-size:clamp(1.3rem,2.2vw,1.5rem);margin-bottom:15px}
    .slider{position:relative;max-width:380px;margin:0 auto;overflow:hidden;border-radius:24px;border:8px solid #e9ecef;box-shadow:var(--shadow-lg);background:#f8f9fa;height:80vh;max-height:720px;}
    .slide{display:none;height:100%}.slide.active{display:block;animation:fadeIn .5s}
    @keyframes fadeIn{from{opacity:0}to{opacity:1}}
    .slide img{width:100%;height:100%;display:block;cursor:pointer;object-fit:contain;aspect-ratio:1080/2400}
    .slider-nav{position:absolute;top:50%;transform:translateY(-50%);font-size:2rem;color:#fff;background-color:rgba(0,0,0,.4);border:none;padding:5px 12px;cursor:pointer;z-index:10;transition:background-color .3s;border-radius:50%}
    .slider-nav:hover{background-color:rgba(0,0,0,.7)}.prev{left:15px}.next{right:15px}
    .serial-channels{display:grid;grid-template-columns:1fr;gap:40px}
    .channel-card{background:var(--card-bg);padding:clamp(25px,4vw,40px);border-radius:16px;border:1px solid var(--border-color);box-shadow:var(--shadow-md)}
    .channel-card h3{font-size:clamp(1.5rem,3vw,1.8rem);color:var(--primary-color);margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--secondary-color)}
    .channel-card p{margin-bottom:20px;}
    .toggle-list-btn{background-image:linear-gradient(45deg,var(--secondary-color),#004ba0);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-weight:600;font-family:var(--font-family);transition:var(--transition-smooth);box-shadow:var(--shadow-sm)}
    .toggle-list-btn:hover{transform:scale(1.05);box-shadow:var(--shadow-md)}
    .full-serial-list{display:none;margin-top:25px;animation:fadeIn .5s}
    .full-serial-list ul { list-style: none; padding: 0; columns: 3; gap: 20px; }
    .full-serial-list li { padding: 12px 15px; margin-bottom: 12px; background-color: #f1f3f5; border-radius: 8px; font-size: .9rem; line-height: 1.4; color: #495057; break-inside: avoid; transition: var(--transition-smooth); }
    .full-serial-list li:hover { background-color:var(--primary-color); color:#fff; transform:scale(1.03) rotate(-1deg); box-shadow:var(--shadow-md); }
    .full-serial-list li a { text-decoration: none; color: inherit; display: block; }
    .full-serial-list li strong { font-size: 1rem; color: var(--text-primary); font-weight: 600; }
    .full-serial-list li:hover strong { color: #fff; }
    .full-serial-list li small { font-size: .9rem; }
    #faq .faq-item{background:var(--card-bg);margin-bottom:15px;border-radius:12px;border:1px solid var(--border-color);box-shadow:var(--shadow-sm);overflow:hidden;transition:var(--transition-smooth)}
    #faq .faq-item:hover{border-color:var(--secondary-color)}.faq-question{width:100%;background:0 0;border:none;text-align:left;padding:20px;font-size:clamp(1.1rem,2vw,1.2rem);font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--text-primary)}
    .faq-question .icon{font-size:1.5rem;transition:transform .3s ease-in-out;color:var(--secondary-color);font-weight:bold}.faq-answer{padding:0 20px;color:var(--text-secondary);max-height:0;overflow:hidden;transition:max-height .5s ease-out,padding .5s ease-out}
    .faq-item.active{border-color:var(--secondary-color);box-shadow:var(--shadow-md)}.faq-item.active .faq-question .icon{transform:rotate(45deg)}.faq-item.active .faq-answer{padding-bottom:20px}
    footer{text-align:center;padding-top:60px;padding-bottom:20px;background:#e9ecef;margin-top:60px;border-top:1px solid var(--border-color)}
    .footer-container{display:flex;flex-direction:column;align-items:center;gap:30px}
    .footer-about p{max-width:500px;margin:0 auto;color:var(--text-secondary);font-size:.95rem}
    .footer-links{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:20px;margin:0;padding:0}
    .footer-links a{text-decoration:none;color:var(--text-secondary);font-weight:500;transition:color .3s}
    .footer-links a:hover{color:var(--primary-color)}
    .copyright{font-size:.9rem;color:#343a40;padding-top:30px;border-top:1px solid var(--border-color);width:100%}
    .copyright .disclaimer{font-size:.8rem;max-width:700px;margin:15px auto 0;color:#343a40}
    .modal{display:none;position:fixed;z-index:1001;left:0;top:0;width:100%;height:100%;background-color:rgba(0,0,0,.9);align-items:center;justify-content:center;animation:modalFadeIn .3s}
    @keyframes modalFadeIn{from{opacity:0}to{opacity:1}}
    .modal-content{max-width:90vw;max-height:90vh;margin:auto;display:block;animation:modalZoomIn .3s}
    @keyframes modalZoomIn{from{transform:scale(.8)}to{transform:scale(1)}}
    .modal .close{position:absolute;top:20px;right:35px;color:#fff;font-size:40px;font-weight:700;cursor:pointer;transition:color .3s,transform .3s}
    .modal .close:hover{color:var(--primary-color);transform:rotate(90deg)}
    .modal-nav{position:fixed;top:50%;transform:translateY(-50%);font-size:3rem;color:#fff;background:0 0;border:none;padding:10px;cursor:pointer;z-index:1002;transition:color .3s,transform .3s}
    .modal-nav:hover{color:var(--primary-color);transform:scale(1.2)}.modal-prev{left:20px}.modal-next{right:20px}
    .serial-page-hero { padding: 80px 0; text-align: center; background-color: var(--card-bg); border-bottom: 1px solid var(--border-color); }
    .serial-page-hero h1 { margin-bottom: 15px; }
    .serial-page-hero .channel-tag { color: var(--text-secondary); font-weight: 500; }
    .serial-page-hero p.subtitle { max-width: 700px; margin: 0 auto 30px; }
    .serial-details-card { background: var(--card-bg); padding: 30px; border-radius: 16px; border: 1px solid var(--border-color); box-shadow: var(--shadow-md); max-width: 800px; margin: 40px auto 0; }
    .serial-details-card h2 { text-align: center; margin-bottom: 25px; font-size: 1.6rem; }
    .details-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; text-align: left; }
    .detail-item strong { display: block; color: var(--text-primary); margin-bottom: 5px; }
    .related-serials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px; }
    .serial-grid-item { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 12px; padding: 20px; text-align: center; transition: var(--transition-smooth); box-shadow: var(--shadow-sm); }
    .serial-grid-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--primary-color); }
    .serial-grid-item h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--secondary-color); }
    .serial-grid-item a { text-decoration: none; }
    .serial-grid-item p { font-size: 0.9rem; }
    .long-form-content { max-width: 800px; margin: 0 auto; text-align: left; line-height: 1.8; }
    .long-form-content h3 { font-size: 1.6rem; color: var(--secondary-color); margin-top: 40px; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px solid var(--border-color); }
    .long-form-content p em { font-style: italic; color: var(--text-secondary); display: block; padding: 15px 20px; background-color: #f9f9f9; border-left: 4px solid var(--primary-color); margin: 20px 0; border-radius: 4px; }
    @media (max-width:992px){.container{width:92%}.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--card-bg);flex-direction:column;text-align:center;padding:20px 0;box-shadow:var(--shadow-lg);gap:0}.main-nav.active{display:flex;animation:slideDown .5s}@keyframes slideDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.main-nav li{padding:15px 0;width:100%}.hamburger{display:flex}.hamburger.active .bar:nth-child(1){transform:translateY(8px) rotate(45deg)}.hamburger.active .bar:nth-child(2){opacity:0}.hamburger.active .bar:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.hero-section{flex-direction:column-reverse;text-align:center}.hero-content{padding-right:0}.full-serial-list ul{columns:2}}
    @media (max-width:768px){section{padding:clamp(50px,8vh,70px) 0}.full-serial-list ul{columns:2}}
    @media (max-width:450px){.logo{font-size:clamp(1rem,3vw,1.8rem);font-weight:700;color:var(--text-primary);text-decoration:none}.nav-download-btn{padding:5px;font-size:clamp(.8rem,1.2vw,1rem);}.full-serial-list ul{columns:1}.footer-links{gap:15px}.modal-nav{font-size:2.5rem} .related-serials-grid {grid-template-columns: 1fr;}}