:root {
    --primary-color: #11A84E;
    --secondary-color: #22C768;
    --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --card-bg-color: #11271B;
    --background-color-dark: #08160F;
    --text-main-color: #F2FFF6;
    --text-secondary-color: #A7D9B8;
    --border-color: #2E7A4E;
    --glow-color: #57E38D;
    --gold-color: #F2C14E;
    --divider-color: #1E3A2A;
    --deep-green-color: #0A4B2C;
}

.page-support {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main-color);
    background-color: var(--background-color-dark);
}

.page-support__section {
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.page-support__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-support__hero-section {
    padding-top: 10px; /* Small top padding for fixed header */
    padding-bottom: 0;
    background-color: var(--background-color-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-support__hero-image-wrapper {
    width: 100%;
    max-width: 1200px;
    margin-bottom: 30px;
}

.page-support__hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-support__hero-content {
    max-width: 900px;
    padding: 0 20px 60px;
    box-sizing: border-box;
    z-index: 1;
}

.page-support__main-title {
    font-size: clamp(2em, 3.5vw, 3.5em);
    font-weight: 700;
    color: var(--text-main-color);
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.page-support__hero-description {
    font-size: 1.1em;
    color: var(--text-secondary-color);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-support__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-support__btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05em;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    min-width: 180px;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-support__btn--primary {
    background: var(--button-gradient);
    color: var(--text-main-color);
    border: 2px solid transparent;
}

.page-support__btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.page-support__btn--secondary {
    background: transparent;
    color: var(--text-main-color);
    border: 2px solid var(--border-color);
}

.page-support__btn--secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background-color: rgba(46, 122, 78, 0.2);
}

.page-support__section-title {
    font-size: clamp(1.8em, 3vw, 2.8em);
    font-weight: 700;
    color: var(--text-main-color);
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.3;
}

.page-support__section-description {
    font-size: 1.05em;
    color: var(--text-secondary-color);
    text-align: center;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-support__highlight {
    color: var(--gold-color);
}

.page-support__why-choose-us {
    background-color: var(--background-color-dark);
    border-bottom: 1px solid var(--divider-color);
}

.page-support__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.page-support__feature-card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.page-support__feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.page-support__feature-title {
    font-size: 1.5em;
    color: var(--text-main-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-support__feature-text {
    color: var(--text-secondary-color);
    font-size: 0.95em;
}

.page-support__contact-channels {
    background-color: var(--deep-green-color);
    border-bottom: 1px solid var(--divider-color);
}

.page-support__channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-support__channel-card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
}

.page-support__channel-icon {
    width: 250px;
    height: auto;
    display: block;
    margin: 0 auto 20px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-support__channel-title {
    font-size: 1.6em;
    color: var(--text-main-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-support__channel-text {
    color: var(--text-secondary-color);
    font-size: 0.95em;
    margin-bottom: 25px;
}

.page-support__faq-section {
    background-color: var(--background-color-dark);
}

.page-support__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.page-support__faq-item {
    background-color: var(--card-bg-color);
    margin-bottom: 15px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

.page-support__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-size: 1.15em;
    font-weight: 600;
    color: var(--text-main-color);
    background-color: var(--card-bg-color);
    transition: background-color 0.3s ease;
    list-style: none;
}

.page-support__faq-question::-webkit-details-marker {
    display: none;
}

.page-support__faq-item[open] .page-support__faq-question {
    background-color: var(--deep-green-color);
    border-bottom: 1px solid var(--border-color);
}

.page-support__faq-qtext {
    flex-grow: 1;
}

.page-support__faq-toggle {
    font-size: 1.8em;
    line-height: 1;
    margin-left: 15px;
    color: var(--gold-color);
    transition: transform 0.3s ease;
}

.page-support__faq-item[open] .page-support__faq-toggle {
    transform: rotate(45deg);
}

.page-support__faq-answer {
    padding: 0 25px 20px;
    font-size: 1em;
    color: var(--text-secondary-color);
    line-height: 1.7;
}

.page-support__faq-answer p {
    margin-bottom: 0;
}

.page-support__cta-final {
    background-color: var(--deep-green-color);
    text-align: center;
    padding: 80px 0;
}

.page-support__cta-final-content {
    max-width: 800px;
    margin: 0 auto;
}

.page-support img {
    max-width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 1024px) {
    .page-support__section {
        padding: 40px 0;
    }

    .page-support__main-title {
        font-size: clamp(2em, 4vw, 3em);
    }

    .page-support__section-title {
        font-size: clamp(1.6em, 3.5vw, 2.4em);
    }

    .page-support__hero-description,
    .page-support__section-description {
        font-size: 1em;
    }

    .page-support__cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .page-support__btn {
        width: 100%;
        max-width: 300px;
    }

    .page-support__features-grid,
    .page-support__channels-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .page-support__faq-question {
        font-size: 1.05em;
        padding: 18px 20px;
    }

    .page-support__faq-toggle {
        font-size: 1.6em;
    }

    .page-support__faq-answer {
        padding: 0 20px 18px;
    }
}

@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-support__hero-section {
        padding-top: 10px !important;
        padding-bottom: 30px !important;
    }

    .page-support__hero-image-wrapper {
        margin-bottom: 20px !important;
    }

    .page-support__hero-image {
        border-radius: 0 !important;
    }

    .page-support__hero-content {
        padding: 0 15px 30px !important;
    }

    .page-support__main-title {
        font-size: 2em !important;
        margin-bottom: 15px !important;
    }

    .page-support__hero-description {
        font-size: 0.95em !important;
        margin-bottom: 25px !important;
    }

    /* 通用图片与容器 */
    .page-support img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }

    .page-support__section,
    .page-support__container,
    .page-support__feature-card,
    .page-support__channel-card,
    .page-support__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px !important;
        padding-right: 15px !important;
    }

    .page-support__section {
        padding: 30px 0 !important;
    }

    .page-support__section-title {
        font-size: 1.8em !important;
        margin-bottom: 15px !important;
    }

    .page-support__section-description {
        font-size: 0.9em !important;
        margin-bottom: 30px !important;
    }

    /* 按钮与按钮容器 */
    .page-support__cta-buttons {
        flex-direction: column !important;
        gap: 15px !important;
        align-items: stretch !important;
        width: 100% !important;
        padding: 0 15px !important;
    }

    .page-support__btn {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding: 12px 20px !important;
        font-size: 1em !important;
    }

    /* Các module nội dung khác */
    .page-support__features-grid,
    .page-support__channels-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }

    .page-support__feature-card,
    .page-support__channel-card {
        padding: 25px !important;
    }

    .page-support__channel-icon {
        width: 180px !important;
        height: auto !important;
    }

    .page-support__faq-list {
        padding: 0 15px !important;
    }

    .page-support__faq-question {
        font-size: 1em !important;
        padding: 15px 20px !important;
    }

    .page-support__faq-toggle {
        font-size: 1.5em !important;
    }

    .page-support__faq-answer {
        padding: 0 20px 15px !important;
        font-size: 0.9em !important;
    }

    .page-support__cta-final {
        padding: 50px 0 !important;
    }

    .page-support__cta-final-content {
        padding: 0 15px !important;
    }
}