.page-about {
    background-color: var(--body-bg);
    color: var(--text-main);
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    font-size: 16px;
}

.page-about__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 10px; /* Assuming body handles var(--header-offset) */
    padding-bottom: 60px;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(25, 27, 34, 0.8) 0%, var(--body-bg) 100%);
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-height: 675px; /* Fixed height for hero image display */
    overflow: hidden;
}

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

.page-about__hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    margin-top: 40px;
    padding: 0 20px;
}

.page-about__main-title {
    font-size: 4em;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 0 10px rgba(255, 176, 77, 0.5);
    max-width: 100%; /* Ensure title does not overflow */
}

.page-about__description {
    font-size: 1.3em;
    color: #f0f0f0;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__hero-cta-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-about__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1em;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-about__btn-primary {
    background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange) 100%);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 15px rgba(255, 140, 26, 0.4);
}

.page-about__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 140, 26, 0.6);
}

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

.page-about__btn-secondary:hover {
    background: rgba(255, 165, 58, 0.1);
    color: #ffffff;
    border-color: #ffffff;
}

.page-about__section {
    padding: 60px 0;
    background-color: var(--body-bg);
}

.page-about__article-wrap {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-about__section-title {
    font-size: 2.8em;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
    line-height: 1.3;
    text-shadow: 0 0 8px rgba(255, 176, 77, 0.3);
}

.page-about__sub-title {
    font-size: 1.8em;
    color: var(--secondary-color);
    margin-top: 40px;
    margin-bottom: 20px;
    font-weight: 600;
}

.page-about p {
    margin-bottom: 1em;
    color: var(--text-main);
}

.page-about strong {
    color: var(--secondary-color);
}

.page-about__figure {
    margin: 30px 0;
    text-align: center;
    background-color: var(--card-bg);
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-about__content-image {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    display: block;
    margin: 0 auto;
    object-fit: cover;
}

.page-about__figcaption {
    font-size: 0.9em;
    color: #ccc;
    margin-top: 10px;
    font-style: italic;
}

.page-about__feature-list {
    list-style: none;
    padding: 0;
    margin-left: 20px;
    color: var(--text-main);
}

.page-about__feature-list li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 25px;
}

.page-about__feature-list li::before {
    content: '✓';
    color: var(--secondary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.page-about__contact-cta {
    text-align: center;
    padding-bottom: 80px;
}

.page-about__cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
    .page-about__main-title {
        font-size: 3.5em;
    }
    .page-about__description {
        font-size: 1.2em;
    }
    .page-about__section-title {
        font-size: 2.2em;
    }
    .page-about__sub-title {
        font-size: 1.6em;
    }
    .page-about__article-wrap {
        padding: 0 25px;
    }
}

@media (max-width: 768px) {
    /* 1. 顶区标题 + 双 CTA */
    .page-about__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px;
    }
    .page-about__hero-content {
        margin-top: 20px;
    }
    .page-about__main-title {
        font-size: clamp(2em, 8vw, 2.5em);
        margin-bottom: 15px;
    }
    .page-about__description {
        font-size: 1em;
        margin-bottom: 30px;
    }
    .page-about__hero-cta-group {
        flex-direction: column;
        gap: 10px;
        padding: 0 15px;
    }
    .page-about__btn {
        width: 100% !important; /* Force full width for buttons */
        max-width: 100% !important;
        padding: 12px 20px;
        font-size: 1em;
        white-space: normal !important;
        word-wrap: break-word !important;
        box-sizing: border-box !important;
    }

    /* 2. 单栏长文容器 */
    .page-about__section {
        padding: 40px 0;
    }
    .page-about__article-wrap {
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-about__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
    }
    .page-about__sub-title {
        font-size: 1.4em;
        margin-top: 30px;
        margin-bottom: 15px;
    }
    .page-about p,
    .page-about li {
        font-size: 15px;
    }

    /* 3. 通用图片与 figure */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        box-sizing: border-box !important;
    }
    .page-about__figure {
        margin: 20px 0;
        padding: 10px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-about__figcaption {
        font-size: 0.8em;
    }

    /* 4. 按钮与按钮容器 (already covered by hero-cta-group and general .page-about__btn) */
    .page-about__cta-buttons {
        flex-direction: column;
        gap: 10px;
        margin-top: 20px;
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-about__cta-buttons .page-about__btn {
        width: 100% !important;
        max-width: 100% !important;
    }

    /* 5. 注册教程与 FAQ 区块 (Not explicitly an FAQ block, but content structure applies) */
    .page-about__feature-list {
        margin-left: 15px;
    }
    .page-about__feature-list li {
        padding-left: 20px;
    }

    .page-about__contact-cta {
        padding-bottom: 60px;
    }
}