:root {
        --primary-color: #ffcc00; /* Vàng rực rỡ */
        --secondary-color: #e60000; /* Đỏ mạnh */
        --dark-background: #1a1a1a;
        --light-text: #f0f0f0;
        --gray-text: #aaaaaa;
        --border-color: #333333;
        --spacing-unit: 1rem;
    }

    .page-3win-n-h {
        font-family: 'Arial', sans-serif;
        color: var(--light-text);
        background-color: var(--dark-background);
        line-height: 1.6;
        overflow-x: hidden;
    }

    .page-3win-n-h__container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 var(--spacing-unit);
        box-sizing: border-box;
    }

    .page-3win-n-h__section-title {
        font-size: 2.5rem;
        color: var(--primary-color);
        text-align: center;
        margin-bottom: 2.5rem;
        padding-top: var(--spacing-unit); /* Small padding to ensure content isn't flush with top after header */
        position: relative;
        text-transform: uppercase;
    }

    .page-3win-n-h__section-title::after {
        content: '';
        display: block;
        width: 80px;
        height: 4px;
        background-color: var(--secondary-color);
        margin: 10px auto 0;
        border-radius: 2px;
    }

    .page-3win-n-h__section-description {
        text-align: center;
        font-size: 1.1rem;
        color: var(--gray-text);
        margin-bottom: 3rem;
        max-width: 800px;
        margin-left: auto;
        margin-right: auto;
    }

    /* Hero Section */
    .page-3win-n-h__hero-section {
        position: relative;
        width: 100%;
        height: 70vh;
        min-height: 400px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        overflow: hidden;
        padding-top: 10px; /* Consistent small top padding */
        box-sizing: border-box;
    }

    .page-3win-n-h__hero-image {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        z-index: 1;
        max-width: 100% !important; /* Ensure responsive */
        height: auto !important; /* Ensure responsive */
    }

    .page-3win-n-h__hero-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.7);
        z-index: 2;
    }

    .page-3win-n-h__hero-content {
        position: relative;
        z-index: 3;
        max-width: 900px;
        padding: var(--spacing-unit);
    }

    .page-3win-n-h__hero-title {
        font-size: 3.5rem;
        color: var(--primary-color);
        margin-bottom: 1rem;
        line-height: 1.2;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    }

    .page-3win-n-h__hero-description {
        font-size: 1.3rem;
        color: var(--light-text);
        margin-bottom: 2rem;
        text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
    }

    .page-3win-n-h__hero-cta-button {
        display: inline-block;
        background-color: var(--secondary-color);
        color: var(--light-text);
        padding: 1rem 2.5rem;
        border-radius: 50px;
        text-decoration: none;
        font-size: 1.2rem;
        font-weight: bold;
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: 2px solid var(--secondary-color);
    }

    .page-3win-n-h__hero-cta-button:hover {
        background-color: var(--primary-color);
        color: var(--dark-background);
        transform: translateY(-3px);
        border-color: var(--primary-color);
    }

    /* About Section */
    .page-3win-n-h__about-section {
        padding: 5rem 0;
        background-color: #222222;
    }

    .page-3win-n-h__about-content {
        display: flex;
        gap: 3rem;
        align-items: center;
        flex-wrap: wrap;
    }

    .page-3win-n-h__about-image {
        flex: 1;
        min-width: 300px;
        max-width: 50%;
        border-radius: 10px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
        max-width: 100% !important; /* Ensure responsive */
        height: auto !important; /* Ensure responsive */
        object-fit: cover;
    }

    .page-3win-n-h__text-block {
        flex: 1;
        min-width: 300px;
        padding: var(--spacing-unit);
        box-sizing: border-box;
    }

    .page-3win-n-h__text-block p {
        margin-bottom: 1rem;
        color: var(--gray-text);
    }

    .page-3win-n-h__feature-list {
        list-style: none;
        padding: 0;
        margin-top: 2rem;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .page-3win-n-h__feature-item {
        background-color: #333333;
        padding: 1.5rem;
        border-radius: 8px;
        border-left: 5px solid var(--primary-color);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        box-sizing: border-box; /* Crucial for list item responsiveness */
    }

    .page-3win-n-h__feature-title {
        color: var(--primary-color);
        font-size: 1.4rem;
        margin-top: 0;
        margin-bottom: 0.8rem;
    }

    .page-3win-n-h__feature-item p {
        color: var(--light-text);
        margin-bottom: 0;
    }

    /* Providers Section */
    .page-3win-n-h__providers-section {
        padding: 5rem 0;
        background-color: var(--dark-background);
    }

    .page-3win-n-h__providers-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1.5rem;
        justify-items: center;
        align-items: center;
    }

    .page-3win-n-h__provider-item {
        text-align: center;
        background-color: #2a2a2a;
        padding: 1.5rem 1rem;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease;
        box-sizing: border-box; /* Crucial for list item responsiveness */
        width: 100%; /* Ensure it takes full grid column width */
        max-width: 200px; /* Limit individual item width */
    }

    .page-3win-n-h__provider-item:hover {
        transform: translateY(-5px);
    }

    .page-3win-n-h__provider-logo {
        width: 100%;
        max-width: 120px;
        height: auto;
        margin-bottom: 0.8rem;
        object-fit: contain;
        max-width: 100% !important; /* Ensure responsive */
        height: auto !important; /* Ensure responsive */
    }

    .page-3win-n-h__provider-name {
        color: var(--light-text);
        font-weight: bold;
        font-size: 1.1rem;
        margin: 0;
    }

    /* How to Join Section */
    .page-3win-n-h__join-section {
        padding: 5rem 0;
        background-color: #222222;
    }

    .page-3win-n-h__steps-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        margin-bottom: 3rem;
    }

    .page-3win-n-h__step-item {
        background-color: #333333;
        padding: 2rem;
        border-radius: 10px;
        text-align: center;
        box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
        box-sizing: border-box; /* Crucial for list item responsiveness */
    }

    .page-3win-n-h__step-image {
        width: 100%;
        max-width: 250px;
        height: auto;
        margin-bottom: 1.5rem;
        border-radius: 8px;
        object-fit: cover;
        max-width: 100% !important; /* Ensure responsive */
        height: auto !important; /* Ensure responsive */
    }

    .page-3win-n-h__step-title {
        color: var(--primary-color);
        font-size: 1.5rem;
        margin-top: 0;
        margin-bottom: 0.8rem;
    }

    .page-3win-n-h__step-description {
        color: var(--gray-text);
        margin-bottom: 0;
    }

    .page-3win-n-h__cta-area {
        text-align: center;
        margin-top: 3rem;
    }

    .page-3win-n-h__main-cta-button {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--dark-background);
        padding: 1.2rem 3rem;
        border-radius: 50px;
        text-decoration: none;
        font-size: 1.3rem;
        font-weight: bold;
        transition: background-color 0.3s ease, transform 0.3s ease;
        border: 2px solid var(--primary-color);
    }

    .page-3win-n-h__main-cta-button:hover {
        background-color: var(--secondary-color);
        color: var(--light-text);
        transform: translateY(-5px);
        border-color: var(--secondary-color);
    }

    /* Promotions Section */
    .page-3win-n-h__promo-section {
        padding: 5rem 0;
        background-color: var(--dark-background);
    }

    .page-3win-n-h__promo-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }

    .page-3win-n-h__promo-card {
        background-color: #2a2a2a;
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
        transition: transform 0.3s ease;
        text-align: center;
        box-sizing: border-box; /* Crucial for list item responsiveness */
    }

    .page-3win-n-h__promo-card:hover {
        transform: translateY(-8px);
    }

    .page-3win-n-h__promo-image {
        width: 100%;
        height: 200px;
        object-fit: cover;
        max-width: 100% !important; /* Ensure responsive */
        height: auto !important; /* Ensure responsive */
    }

    .page-3win-n-h__promo-title {
        font-size: 1.6rem;
        color: var(--primary-color);
        margin: 1.5rem 1rem 0.8rem;
    }

    .page-3win-n-h__promo-text {
        color: var(--gray-text);
        padding: 0 1.5rem 1.5rem;
        margin-bottom: 0;
    }

    .page-3win-n-h__promo-action {
        background-color: var(--secondary-color);
        color: var(--light-text);
        padding: 0.8rem 1rem;
        font-weight: bold;
        text-transform: uppercase;
        cursor: pointer;
        transition: background-color 0.3s ease;
    }

    .page-3win-n-h__promo-action:hover {
        background-color: var(--primary-color);
        color: var(--dark-background);
    }

    /* Payment Section */
    .page-3win-n-h__payment-section {
        padding: 5rem 0;
        background-color: #222222;
    }

    .page-3win-n-h__payment-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1.5rem;
        justify-items: center;
        align-items: center;
    }

    .page-3win-n-h__payment-item {
        text-align: center;
        background-color: #2a2a2a;
        padding: 1rem;
        border-radius: 8px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        box-sizing: border-box; /* Crucial for list item responsiveness */
        width: 100%; /* Ensure it takes full grid column width */
        max-width: 150px; /* Limit individual item width */
    }

    .page-3win-n-h__payment-logo {
        width: 100%;
        max-width: 80px;
        height: auto;
        margin-bottom: 0.5rem;
        object-fit: contain;
        max-width: 100% !important; /* Ensure responsive */
        height: auto !important; /* Ensure responsive */
    }

    .page-3win-n-h__payment-name {
        color: var(--gray-text);
        font-size: 0.9rem;
        margin: 0;
    }

    /* FAQ Section */
    .page-3win-n-h__faq-section {
        padding: 5rem 0;
        background-color: var(--dark-background);
    }

    .page-3win-n-h__faq-list {
        max-width: 900px;
        margin: 0 auto;
    }

    .page-3win-n-h__faq-item {
        background-color: #2a2a2a;
        margin-bottom: 1rem;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        box-sizing: border-box; /* Crucial for list item responsiveness */
    }

    .page-3win-n-h__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1.2rem 1.5rem;
        background-color: #333333;
        cursor: pointer;
        user-select: none;
        transition: background-color 0.3s ease;
    }

    .page-3win-n-h__faq-question:hover {
        background-color: #444444;
    }

    .page-3win-n-h__faq-title {
        color: var(--light-text);
        font-size: 1.2rem;
        margin: 0;
        flex-grow: 1;
        text-align: left;
        pointer-events: none; /* Prevent text from blocking click event on parent */
    }

    .page-3win-n-h__faq-toggle {
        font-size: 1.8rem;
        color: var(--primary-color);
        font-weight: bold;
        line-height: 1;
        width: 30px;
        text-align: center;
        pointer-events: none; /* Prevent icon from blocking click event on parent */
    }

    .page-3win-n-h__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 1.5rem;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        opacity: 0;
        color: var(--gray-text);
    }

    .page-3win-n-h__faq-answer p {
        margin-top: 1rem;
        margin-bottom: 1rem;
    }

    .page-3win-n-h__faq-item.active .page-3win-n-h__faq-answer {
        max-height: 2000px !important; /* Sufficiently large to contain content */
        padding: 20px 1.5rem !important;
        opacity: 1;
    }

    .page-3win-n-h__faq-item.active .page-3win-n-h__faq-toggle {
        content: '−'; /* Changed via JS, but good to have a fallback/reference */
        color: var(--secondary-color);
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
        .page-3win-n-h__hero-title {
            font-size: 3rem;
        }
        .page-3win-n-h__hero-description {
            font-size: 1.15rem;
        }
        .page-3win-n-h__section-title {
            font-size: 2.2rem;
        }
    }

    @media (max-width: 768px) {
        .page-3win-n-h__hero-section {
            height: 60vh;
        }
        .page-3win-n-h__hero-title {
            font-size: 2.2rem;
        }
        .page-3win-n-h__hero-description {
            font-size: 1rem;
        }
        .page-3win-n-h__hero-cta-button {
            padding: 0.8rem 1.8rem;
            font-size: 1rem;
        }

        .page-3win-n-h__section-title {
            font-size: 1.8rem;
            margin-bottom: 2rem;
        }
        .page-3win-n-h__section-description {
            font-size: 1rem;
            margin-bottom: 2rem;
        }

        .page-3win-n-h__about-content {
            flex-direction: column;
            gap: 2rem;
        }
        .page-3win-n-h__about-image {
            max-width: 100% !important; /* Force full width */
            height: auto !important; /* Maintain aspect ratio */
        }
        .page-3win-n-h__text-block {
            min-width: unset;
        }
        .page-3win-n-h__feature-list {
            grid-template-columns: 1fr;
            width: 100% !important;
            max-width: 100% !important;
            padding: 0 !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            box-sizing: border-box !important;
        }
        .page-3win-n-h__feature-item {
            width: 100% !important;
            max-width: 100% !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            padding: 1rem !important;
            box-sizing: border-box !important;
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
        }
        .page-3win-n-h__feature-item p {
            word-break: break-word !important;
        }

        .page-3win-n-h__providers-grid,
        .page-3win-n-h__steps-grid,
        .page-3win-n-h__promo-grid,
        .page-3win-n-h__payment-grid {
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); /* Adjust grid for smaller screens */
            gap: 1rem;
        }

        .page-3win-n-h__step-item,
        .page-3win-n-h__promo-card,
        .page-3win-n-h__provider-item,
        .page-3win-n-h__payment-item {
            width: 100% !important;
            max-width: 100% !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            padding: 1rem !important;
            box-sizing: border-box !important;
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
        }
        .page-3win-n-h__step-item p,
        .page-3win-n-h__promo-card p,
        .page-3win-n-h__provider-item p,
        .page-3win-n-h__payment-item p {
            word-break: break-word !important;
        }

        .page-3win-n-h__main-cta-button {
            padding: 1rem 2rem;
            font-size: 1.1rem;
        }

        .page-3win-n-h__promo-image {
            height: 150px;
        }

        .page-3win-n-h__faq-question {
            padding: 1rem;
        }
        .page-3win-n-h__faq-title {
            font-size: 1rem;
        }
        .page-3win-n-h__faq-toggle {
            font-size: 1.5rem;
            width: 25px;
        }
        .page-3win-n-h__faq-answer {
            padding: 0 1rem;
        }
        .page-3win-n-h__faq-item.active .page-3win-n-h__faq-answer {
            padding: 15px 1rem !important;
        }
    }

    @media (max-width: 480px) {
        .page-3win-n-h__hero-section {
            height: 50vh;
            min-height: 300px;
        }
        .page-3win-n-h__hero-title {
            font-size: 1.8rem;
        }
        .page-3win-n-h__hero-description {
            font-size: 0.9rem;
        }
        .page-3win-n-h__hero-cta-button {
            padding: 0.7rem 1.5rem;
            font-size: 0.9rem;
        }

        .page-3win-n-h__section-title {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .page-3win-n-h__section-description {
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }

        .page-3win-n-h__providers-grid,
        .page-3win-n-h__payment-grid {
            grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        }

        .page-3win-n-h__promo-grid {
            grid-template-columns: 1fr;
        }
        .page-3win-n-h__promo-title {
            font-size: 1.4rem;
        }
        .page-3win-n-h__promo-text {
            font-size: 0.9rem;
        }
        .page-3win-n-h__promo-action {
            font-size: 0.9rem;
        }

        .page-3win-n-h__main-cta-button {
            padding: 0.8rem 1.5rem;
            font-size: 1rem;
        }
    }