:root {
        --primary: #ff4757;
        --primary-hover: #ff6b81;
        --bg-dark: #121212;
        --bg-card: #1e1e1e;
        --text-main: #f1f1f1;
        --text-muted: #a0a0a0;
        --border-color: #333;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        background-color: var(--bg-dark);
        color: var(--text-main);
        line-height: 1.6;
        overflow-x: hidden;
    }

    a {
        text-decoration: none;
        color: inherit;
    }

    /* Header */
    .site-header {
        position: fixed;
        top: 0;
        width: 100%;
        background-color: rgba(18, 18, 18, 0.95);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border-color);
        z-index: 1000;
    }

    .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 15px 20px;
    }

    .logo-group {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .logo-group img {
        height: 32px;
        border-radius: 6px;
    }

    .logo-group span {
        font-size: 1.2rem;
        font-weight: bold;
        letter-spacing: 1px;
    }

    .nav-links {
        display: flex;
        gap: 20px;
    }

    .nav-links a {
        font-size: 0.95rem;
        color: var(--text-muted);
        transition: color 0.3s;
        cursor: pointer;
    }

    .nav-links a:hover {
        color: var(--primary);
    }

    .btn-download {
        background-color: var(--primary);
        color: #fff;
        padding: 8px 20px;
        border-radius: 20px;
        font-weight: bold;
        font-size: 0.9rem;
        transition: background 0.3s;
    }

    .btn-download:hover {
        background-color: var(--primary-hover);
    }

    /* Main & Sections */
    main {
        padding-top: 70px;
    }

    .section-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 60px 20px;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 20px;
        text-align: center;
    }

    .section-title span {
        color: var(--primary);
    }

    /* Hero */
    .hero-section {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 80vh;
        background: linear-gradient(to bottom, #1a1a1a, #121212);
        padding: 40px 20px;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.8rem;
        margin-bottom: 15px;
        line-height: 1.3;
    }

    .hero-content p {
        font-size: 1.1rem;
        color: var(--text-muted);
        margin-bottom: 30px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    /* Grid Layouts */
    .poster-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .poster-card {
        background-color: var(--bg-card);
        border-radius: 10px;
        overflow: hidden;
        position: relative;
    }

    .poster-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        aspect-ratio: 3/4;
    }

    .poster-info {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 20px 10px 10px;
        background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    }

    .poster-info h3 {
        font-size: 1rem;
        margin-bottom: 5px;
    }

    .poster-tag {
        background: var(--primary);
        color: white;
        font-size: 0.75rem;
        padding: 2px 6px;
        border-radius: 4px;
        display: inline-block;
    }

    /* Features */
    .features-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        background-color: var(--bg-card);
        padding: 25px;
        border-radius: 12px;
        border: 1px solid var(--border-color);
    }

    .feature-card h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
        color: var(--text-main);
    }

    .feature-card p {
        font-size: 0.95rem;
        color: var(--text-muted);
    }

    /* Interactive Q&A */
    .qa-item {
        margin-bottom: 15px;
        background: var(--bg-card);
        border-radius: 8px;
        overflow: hidden;
    }

    .qa-question {
        padding: 15px 20px;
        font-weight: bold;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        background-color: #252525;
    }

    .qa-answer {
        padding: 0 20px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        color: var(--text-muted);
        font-size: 0.95rem;
    }

    .qa-item.active .qa-answer {
        padding: 15px 20px;
        max-height: 200px;
    }

    .qa-icon {
        transition: transform 0.3s;
    }

    .qa-item.active .qa-icon {
        transform: rotate(180deg);
    }

    /* Footer */
    .site-footer {
        border-top: 1px solid var(--border-color);
        padding: 30px 20px;
        text-align: center;
        color: var(--text-muted);
        font-size: 0.85rem;
    }

    .site-footer p {
        margin-bottom: 10px;
    }

    .site-footer a {
        color: var(--text-muted);
        text-decoration: underline;
    }

    /* Responsive */
    @media (min-width: 768px) {
        .poster-grid {
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .features-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .hero-content h1 {
            font-size: 3.5rem;
        }
    }

    @media (min-width: 1024px) {
        .poster-grid {
            grid-template-columns: repeat(5, 1fr);
        }
        .features-grid {
            grid-template-columns: repeat(3, 1fr);
        }
        .nav-links {
            display: flex;
        }
    }