:root {
        --primary-yellow: #FFD700;
        --primary-yellow-hover: #FFC400;
        --bg-black: #0F0F0F;
        --bg-dark-gray: #1A1A1A;
        --bg-light-gray: #262626;
        --text-main: #F5F5F5;
        --text-muted: #A3A3A3;
        --radius-lg: 16px;
        --radius-md: 8px;
        --transition: 0.3s ease;
    }

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

    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        background-color: var(--bg-black);
        color: var(--text-main);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }

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

    ul {
        list-style: none;
    }

    img {
        max-width: 100%;
        display: block;
    }

    /* Container */
    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* Header */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background-color: rgba(15, 15, 15, 0.9);
        backdrop-filter: blur(10px);
        z-index: 1000;
        border-bottom: 1px solid rgba(255, 215, 0, 0.1);
    }

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 64px;
    }

    .logo-area {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 20px;
        font-weight: bold;
        color: var(--primary-yellow);
    }

    .logo-area img {
        height: 32px;
        width: auto;
        border-radius: 6px;
    }

    .nav-links {
        display: none;
    }

    .header-btn {
        background-color: var(--primary-yellow);
        color: var(--bg-black);
        padding: 8px 16px;
        border-radius: 20px;
        font-weight: bold;
        font-size: 14px;
        transition: var(--transition);
    }

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

    /* H1 Hero Section */
    .hero-section {
        padding: 120px 0 60px;
        background: radial-gradient(circle at top right, rgba(255, 215, 0, 0.15), transparent 40%),
                    radial-gradient(circle at bottom left, rgba(255, 215, 0, 0.05), transparent 40%);
        text-align: center;
    }

    .hero-title {
        font-size: 32px;
        line-height: 1.3;
        margin-bottom: 16px;
        font-weight: 800;
    }

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

    .hero-subtitle {
        font-size: 16px;
        color: var(--text-muted);
        margin-bottom: 32px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-download-btn {
        display: inline-block;
        background-color: var(--primary-yellow);
        color: var(--bg-black);
        font-size: 18px;
        font-weight: bold;
        padding: 16px 48px;
        border-radius: 30px;
        box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
        transition: var(--transition);
        margin-bottom: 40px;
    }

    .hero-download-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
    }

    .hero-images {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
        max-width: 800px;
        margin: 0 auto;
    }

    .hero-images img {
        width: 100%;
        height: auto;
        border-radius: var(--radius-md);
        object-fit: cover;
        aspect-ratio: 3/4;
        border: 1px solid rgba(255, 255, 255, 0.05);
    }

    /* Data Carousel Section */
    .data-section {
        padding: 40px 0;
        background-color: var(--bg-dark-gray);
        border-top: 1px solid rgba(255, 215, 0, 0.1);
        border-bottom: 1px solid rgba(255, 215, 0, 0.1);
    }

    .data-grid {
        display: flex;
        justify-content: space-around;
        text-align: center;
        flex-wrap: wrap;
        gap: 20px;
    }

    .data-item {
        flex: 1;
        min-width: 120px;
    }

    .data-num {
        font-size: 28px;
        font-weight: 800;
        color: var(--primary-yellow);
        margin-bottom: 4px;
    }

    .data-label {
        font-size: 14px;
        color: var(--text-muted);
    }

    /* Section Common */
    .section-title {
        font-size: 24px;
        text-align: center;
        margin-bottom: 12px;
        font-weight: bold;
    }

    .section-desc {
        text-align: center;
        color: var(--text-muted);
        font-size: 15px;
        margin-bottom: 40px;
    }

    .common-section {
        padding: 60px 0;
    }

    /* Platform Intro */
    .intro-content {
        display: flex;
        flex-direction: column;
        gap: 30px;
    }

    .intro-text {
        font-size: 16px;
        color: #D1D1D1;
    }

    .intro-text p {
        margin-bottom: 16px;
    }

    .intro-img-box {
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .intro-img-box img {
        width: 100%;
        height: auto;
        aspect-ratio: 16/9;
        object-fit: cover;
    }

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

    .adv-card {
        background-color: var(--bg-dark-gray);
        padding: 24px;
        border-radius: var(--radius-lg);
        border: 1px solid rgba(255, 215, 0, 0.1);
        transition: var(--transition);
    }

    .adv-card:hover {
        border-color: rgba(255, 215, 0, 0.3);
        background-color: var(--bg-light-gray);
    }

    .adv-icon {
        width: 48px;
        height: 48px;
        background-color: rgba(255, 215, 0, 0.1);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        color: var(--primary-yellow);
        margin-bottom: 16px;
    }

    .adv-card h3 {
        font-size: 18px;
        margin-bottom: 8px;
        color: var(--primary-yellow);
    }

    .adv-card p {
        font-size: 14px;
        color: var(--text-muted);
    }

    /* Today New */
    .gallery-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .gallery-item {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        aspect-ratio: 3/4;
        background-color: var(--bg-dark-gray);
    }

    .gallery-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .gallery-item:hover img {
        transform: scale(1.05);
    }

    .gallery-tag {
        position: absolute;
        top: 10px;
        left: 10px;
        background-color: var(--primary-yellow);
        color: var(--bg-black);
        font-size: 12px;
        font-weight: bold;
        padding: 2px 8px;
        border-radius: 4px;
    }

    .gallery-title {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        padding: 20px 10px 10px;
        background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
        font-size: 14px;
        font-weight: bold;
    }

    /* Ranking */
    .rank-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .rank-item {
        display: flex;
        align-items: center;
        background-color: var(--bg-dark-gray);
        padding: 12px 16px;
        border-radius: var(--radius-md);
        border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .rank-num {
        font-size: 20px;
        font-weight: 900;
        font-style: italic;
        color: var(--primary-yellow);
        width: 40px;
        flex-shrink: 0;
    }

    .rank-img {
        width: 60px;
        height: 80px;
        border-radius: 4px;
        object-fit: cover;
        margin-right: 16px;
    }

    .rank-info {
        flex-grow: 1;
    }

    .rank-title {
        font-size: 16px;
        font-weight: bold;
        margin-bottom: 4px;
    }

    .rank-hot {
        font-size: 12px;
        color: var(--text-muted);
    }

    /* Special Topic */
    .special-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .special-card {
        position: relative;
        border-radius: var(--radius-lg);
        overflow: hidden;
        aspect-ratio: 16/9;
    }

    .special-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .special-hover {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding: 20px;
    }

    .special-hover h3 {
        font-size: 18px;
        margin-bottom: 4px;
    }

    .special-hover p {
        font-size: 13px;
        color: var(--text-muted);
    }

    /* Reviews */
    .review-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .review-card {
        background-color: var(--bg-dark-gray);
        padding: 20px;
        border-radius: var(--radius-lg);
        border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .review-stars {
        color: var(--primary-yellow);
        font-size: 14px;
        margin-bottom: 8px;
    }

    .review-text {
        font-size: 15px;
        color: #D1D1D1;
        margin-bottom: 16px;
        font-style: italic;
    }

    .review-user {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        color: var(--text-muted);
    }

    .review-avatar {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background-color: var(--primary-yellow);
        color: var(--bg-black);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
    }

    /* Download Section */
    .download-section {
        padding: 60px 0;
        background: linear-gradient(180deg, var(--bg-dark-gray) 0%, var(--bg-black) 100%);
        text-align: center;
        border-top: 1px solid rgba(255, 215, 0, 0.2);
    }

    .download-title {
        font-size: 28px;
        color: var(--primary-yellow);
        margin-bottom: 16px;
        font-weight: 900;
    }

    .download-desc {
        font-size: 16px;
        color: var(--text-muted);
        margin-bottom: 32px;
    }

    .big-download-btn {
        display: inline-block;
        background-color: var(--primary-yellow);
        color: var(--bg-black);
        font-size: 22px;
        font-weight: 900;
        padding: 24px 60px;
        border-radius: 50px;
        box-shadow: 0 10px 30px rgba(255, 215, 0, 0.4);
        transition: var(--transition);
        width: 90%;
        max-width: 400px;
    }

    .big-download-btn:hover {
        transform: scale(1.02);
        box-shadow: 0 15px 40px rgba(255, 215, 0, 0.6);
    }

    /* FAQ */
    .faq-section {
        padding: 60px 0;
    }

    .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .faq-item {
        background-color: var(--bg-dark-gray);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .faq-question {
        width: 100%;
        text-align: left;
        background: none;
        border: none;
        padding: 16px 20px;
        font-size: 16px;
        color: var(--text-main);
        font-weight: bold;
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
    }

    .faq-question::after {
        content: '+';
        font-size: 20px;
        color: var(--primary-yellow);
        transition: transform 0.3s;
    }

    .faq-item.active .faq-question::after {
        transform: rotate(45deg);
    }

    .faq-answer {
        padding: 0 20px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
    }

    .faq-item.active .faq-answer {
        padding: 0 20px 16px;
        max-height: 200px;
    }

    /* Footer */
    .site-footer {
        background-color: #050505;
        padding: 40px 0 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        text-align: center;
        font-size: 13px;
        color: #666;
    }

    .footer-logo {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        color: var(--primary-yellow);
        font-size: 18px;
        font-weight: bold;
        margin-bottom: 16px;
    }

    .footer-logo img {
        height: 24px;
    }

    .footer-links {
        margin-bottom: 20px;
        display: flex;
        justify-content: center;
        gap: 16px;
    }

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

    .footer-time {
        margin-top: 12px;
        font-size: 12px;
        color: #444;
    }

    /* Breakpoints */
    @media (min-width: 768px) {
        .nav-links {
            display: flex;
            gap: 24px;
            font-size: 15px;
            color: var(--text-muted);
        }

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

        .hero-title {
            font-size: 48px;
        }

        .hero-images {
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
        }

        .hero-images img:nth-child(n+5) {
            display: none; /* Keep it clean on md */
        }

        .intro-content {
            flex-direction: row;
            align-items: center;
            gap: 40px;
        }

        .intro-text, .intro-img-box {
            flex: 1;
        }

        .adv-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .gallery-grid {
            grid-template-columns: repeat(3, 1fr);
        }

        .special-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .review-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .big-download-btn {
            font-size: 26px;
            padding: 28px 80px;
        }
    }

    @media (min-width: 1024px) {
        .hero-section {
            padding: 160px 0 80px;
        }

        .hero-title {
            font-size: 56px;
        }

        .hero-subtitle {
            font-size: 20px;
        }

        .hero-images {
            grid-template-columns: repeat(5, 1fr);
        }

        .hero-images img:nth-child(n+5) {
            display: block;
        }

        .adv-grid {
            grid-template-columns: repeat(4, 1fr);
        }

        .gallery-grid {
            grid-template-columns: repeat(4, 1fr);
        }

        .special-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .review-grid {
            grid-template-columns: repeat(3, 1fr);
        }
    }