.page-da-ga {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333333; /* Default text color for light body background */
    background-color: #FFFFFF; /* Explicitly set body background as white */
}

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

.page-da-ga__article-wrap {
    max-width: 1150px;
    margin: 0 auto;
    padding: 40px 20px;
    box-sizing: border-box;
}

.page-da-ga__top-section {
    padding-top: 10px; /* Small top padding, body handles main header offset */
    padding-bottom: 40px;
    text-align: center;
    background-color: #FFFFFF;
    color: #333333;
}

.page-da-ga__main-title {
    font-size: clamp(2.2em, 4vw, 3.2em);
    font-weight: 700;
    color: #017439;
    margin-bottom: 15px;
    line-height: 1.2;
}

.page-da-ga__description {
    font-size: 1.1em;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #555555;
}

.page-da-ga__top-cta {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-da-ga__btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-da-ga__btn-primary {
    background-color: #C30808; /* Custom color for Register/Login */
    color: #FFFF00; /* Custom font color for Register/Login */
    border: 2px solid #C30808;
}

.page-da-ga__btn-primary:hover {
    background-color: #a30606;
    border-color: #a30606;
}

.page-da-ga__btn-secondary {
    background-color: #017439;
    color: #FFFFFF;
    border: 2px solid #017439;
}

.page-da-ga__btn-secondary:hover {
    background-color: #005a2d;
    border-color: #005a2d;
}

.page-da-ga__hero-visual {
    width: 100%;
    overflow: hidden;
    margin-bottom: 40px;
}

.page-da-ga__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.page-da-ga__section {
    padding: 40px 0;
    margin-bottom: 20px;
}

.page-da-ga__light-bg {
    background-color: #FFFFFF;
    color: #333333;
}

.page-da-ga__dark-section {
    background-color: #017439;
    color: #FFFFFF;
}

.page-da-ga__dark-section .page-da-ga__section-title,
.page-da-ga__dark-section .page-da-ga__card-title {
    color: #FFFFFF;
}

.page-da-ga__section-title {
    font-size: 2.2em;
    font-weight: 700;
    color: #017439;
    text-align: center;
    margin-bottom: 30px;
}

.page-da-ga__text-block {
    font-size: 1.05em;
    line-height: 1.7;
    margin-bottom: 20px;
    text-align: justify;
}

.page-da-ga__text-block--intro {
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-da-ga__figure {
    margin: 30px 0;
    text-align: center;
}

.page-da-ga__image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-da-ga__figcaption {
    font-size: 0.9em;
    color: #666666;
    margin-top: 10px;
}

.page-da-ga__grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
    margin-bottom: 30px;
}

.page-da-ga__grid-container--3-cols {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.page-da-ga__info-card,
.page-da-ga__feature-card,
.page-da-ga__promo-card {
    background-color: #FFFFFF;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    color: #333333;
}

.page-da-ga__dark-section .page-da-ga__info-card,
.page-da-ga__dark-section .page-da-ga__feature-card,
.page-da-ga__dark-section .page-da-ga__promo-card {
    background-color: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.page-da-ga__info-card:hover,
.page-da-ga__feature-card:hover,
.page-da-ga__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-da-ga__card-title {
    font-size: 1.4em;
    font-weight: 600;
    color: #017439;
    margin-bottom: 15px;
}

.page-da-ga__dark-section .page-da-ga__card-title {
    color: #FFFF00;
}

.page-da-ga__card-text {
    font-size: 1em;
    line-height: 1.6;
    flex-grow: 1;
}

.page-da-ga__cta-center {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 20px;
}

.page-da-ga__step-by-step {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 30px;
    margin-bottom: 40px;
}

.page-da-ga__step-card {
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
}

.page-da-ga__step-title {
    font-size: 1.3em;
    font-weight: 600;
    color: #017439;
    margin-bottom: 10px;
}

.page-da-ga__step-text {
    font-size: 0.95em;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-da-ga__tips-list {
    list-style: none;
    padding: 0;
    margin-top: 30px;
}

.page-da-ga__list-item {
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.page-da-ga__list-item-title {
    font-size: 1.25em;
    font-weight: 600;
    color: #017439;
    margin-bottom: 10px;
}

.page-da-ga__list-item-text {
    font-size: 1em;
    line-height: 1.6;
}

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

.page-da-ga__promo-card {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    color: #FFFFFF;
}

.page-da-ga__promo-card .page-da-ga__card-title {
    color: #FFFF00;
}

.page-da-ga__faq-list {
    margin-top: 30px;
}

.page-da-ga__faq-item {
    background-color: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-da-ga__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.15em;
    font-weight: 600;
    color: #017439;
    cursor: pointer;
    list-style: none;
    position: relative;
}

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

.page-da-ga__faq-question::marker {
    display: none;
}

.page-da-ga__faq-qtext {
    flex-grow: 1;
    text-align: left;
}

.page-da-ga__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    transition: transform 0.3s ease;
    color: #017439;
}

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

.page-da-ga__faq-answer {
    padding: 0 25px 20px 25px;
    font-size: 1em;
    line-height: 1.6;
    color: #555555;
}

.page-da-ga__cta-final {
    text-align: center;
    margin-top: 50px;
    margin-bottom: 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
    .page-da-ga__article-wrap {
        padding: 30px 15px;
    }

    .page-da-ga__main-title {
        font-size: clamp(2em, 5vw, 2.8em);
    }

    .page-da-ga__section-title {
        font-size: 2em;
    }

    .page-da-ga__grid-container,
    .page-da-ga__step-by-step,
    .page-da-ga__promo-grid {
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .page-da-ga {
        font-size: 16px;
        line-height: 1.6;
    }

    /* 1. 顶区标题 + 双 CTA */
    .page-da-ga__top-section {
        padding-top: 10px !important; /* Small top padding, body handles main header offset */
        padding-bottom: 30px;
    }

    .page-da-ga__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em) !important;
        padding: 0 10px;
    }

    .page-da-ga__description {
        font-size: 1em;
        padding: 0 15px;
    }

    .page-da-ga__top-cta,
    .page-da-ga__cta-final {
        flex-direction: column !important;
        gap: 10px;
        padding: 0 15px;
    }

    .page-da-ga__btn {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* 2. 单栏长文容器 */
    .page-da-ga__article-wrap {
        padding: 25px 15px !important;
    }

    .page-da-ga__section-title {
        font-size: 1.8em !important;
        margin-bottom: 25px;
        padding: 0 10px;
    }

    .page-da-ga__text-block,
    .page-da-ga__card-text,
    .page-da-ga__step-text,
    .page-da-ga__list-item-text {
        font-size: 0.95em;
        padding: 0 5px;
    }

    .page-da-ga__info-card,
    .page-da-ga__feature-card,
    .page-da-ga__promo-card,
    .page-da-ga__step-card,
    .page-da-ga__list-item {
        padding: 20px !important;
    }

    /* 3. 通用图片与 figure */
    .page-da-ga img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }

    .page-da-ga__hero-visual,
    .page-da-ga__figure {
        max-width: 100% !important;
        width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
    }

    .page-da-ga__figcaption {
        padding: 0 15px;
    }

    /* 4. 按钮与按钮容器 */
    .page-da-ga__cta-buttons,
    .page-da-ga__button-group,
    .page-da-ga__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important;
        gap: 10px;
    }

    .page-da-ga__cta-center {
        padding: 0 15px;
    }

    /* 5. 注册教程与 FAQ 区块 */
    .page-da-ga__step-card {
        padding-bottom: 20px !important;
    }

    .page-da-ga__step-title {
        font-size: 1.2em;
    }

    .page-da-ga__faq-question {
        font-size: 1.05em !important;
        padding: 15px 20px !important;
    }

    .page-da-ga__faq-answer {
        padding: 0 20px 15px 20px !important;
        font-size: 0.95em;
    }
}