/* style/about.css */

:root {
    --primary-color: #26A9E0;
    --secondary-color: #FFFFFF;
    --text-dark: #333333;
    --text-light: #FFFFFF;
    --background-light: #FFFFFF;
    --background-dark: #26A9E0;
    --button-login: #EA7C07;
}

.page-about {
    font-family: 'Arial', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--background-light); /* Assuming shared.css sets body background to light */
}

.page-about__hero-section {
    position: relative;
    width: 100%;
    overflow: hidden;
    text-align: center;
    padding-top: 10px; /* Small top padding, relying on body for header offset */
    padding-bottom: 40px;
    background-color: var(--background-light);
}

.page-about__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 675px;
}

.page-about__hero-content {
    max-width: 960px;
    margin: 20px auto 0;
    padding: 0 20px;
}

.page-about__main-title {
    font-size: clamp(2.2rem, 4vw, 2.8rem); /* Using clamp for responsive H1 */
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.page-about__description {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 30px;
    width: 100%;
    box-sizing: border-box;
}

.page-about__cta-buttons--centered {
    margin-top: 40px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    text-align: center;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    max-width: 100%;
}

.page-about__btn-primary {
    background-color: var(--primary-color);
    color: var(--text-light);
    border: 2px solid var(--primary-color);
}

.page-about__btn-primary:hover {
    background-color: darken(var(--primary-color), 10%);
    border-color: darken(var(--primary-color), 10%);
}

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

.page-about__btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

.page-about__section {
    padding: 60px 0;
    width: 100%;
    box-sizing: border-box;
}

.page-about__article-wrap {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-about__section-title {
    font-size: 2.2rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

.page-about__sub-title {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-about__intro-section p,
.page-about__products-services p,
.page-about__responsibility-commitment p,
.page-about__future-vision p {
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.page-about__content-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-about__why-choose-us {
    background-color: var(--background-dark);
    color: var(--text-light);
}

.page-about__why-choose-us .page-about__section-title,
.page-about__why-choose-us .page-about__feature-title {
    color: var(--secondary-color);
}

.page-about__why-choose-us p {
    color: var(--text-light);
}

.page-about__feature-list {
    list-style: none;
    padding: 0;
    margin: 30px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-about__feature-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.page-about__feature-item:hover {
    transform: translateY(-5px);
}

.page-about__feature-item p {
    font-size: 0.95rem;
    line-height: 1.5;
}

.page-about__products-services {
    background-color: var(--background-light);
}

.page-about__product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about__product-card {
    background-color: var(--secondary-color);
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.page-about__product-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-about__product-title a {
    color: var(--primary-color);
    text-decoration: none;
}

.page-about__product-title a:hover {
    text-decoration: underline;
}

.page-about__product-card p {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.page-about__responsibility-commitment {
    background-color: var(--background-dark);
    color: var(--text-light);
}

.page-about__responsibility-commitment .page-about__section-title,
.page-about__responsibility-commitment .page-about__sub-title {
    color: var(--secondary-color);
}

.page-about__responsibility-commitment p {
    color: var(--text-light);
}

.page-about__future-vision {
    background-color: var(--background-light);
}

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

@media (max-width: 1024px) {
    .page-about__main-title {
        font-size: clamp(2rem, 5vw, 2.5rem);
    }
    .page-about__section-title {
        font-size: 2rem;
    }
    .page-about__sub-title {
        font-size: 1.4rem;
    }
    .page-about__feature-list,
    .page-about__product-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }
    .page-about__hero-content {
        padding: 0 15px;
    }
}

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

    /* 1. 顶区标题 + 双 CTA */
    .page-about__hero-section {
        padding-top: 10px !important; /* Small top padding, relying on body for header offset */
        padding-bottom: 30px;
    }
    .page-about__main-title {
        font-size: clamp(1.8rem, 7vw, 2.2rem) !important;
        margin-bottom: 10px;
    }
    .page-about__description {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    .page-about__cta-buttons {
        flex-direction: column !important; /* Stack buttons vertically */
        gap: 10px;
        padding: 0 15px;
    }
    .page-about__btn-primary,
    .page-about__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 20px !important;
        font-size: 0.95rem !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        box-sizing: border-box !important;
    }
    .page-about__section {
        padding: 40px 0;
    }

    /* 2. 单栏长文容器 */
    .page-about__article-wrap {
        padding: 0 15px !important;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-about__section-title {
        font-size: 1.8rem !important;
        margin-bottom: 30px;
    }
    .page-about__sub-title {
        font-size: 1.3rem !important;
        margin-top: 25px;
        margin-bottom: 10px;
    }
    .page-about__intro-section p,
    .page-about__products-services p,
    .page-about__responsibility-commitment p,
    .page-about__future-vision p {
        font-size: 1rem !important;
        margin-bottom: 15px;
    }

    /* 3. 通用图片与 figure */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }
    .page-about__hero-image {
        max-height: 400px;
    }
    .page-about__content-image {
        margin: 20px auto;
    }

    /* 4. 按钮与按钮容器 (already covered in top-cta, but general rules here) */
    .page-about a[class*="btn"],
    .page-about a[class*="button"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-about__cta-buttons,
    .page-about__button-group,
    .page-about__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-about__cta-buttons {
        flex-direction: column !important;
    }

    /* 5. 注册教程与 FAQ 区块 (N/A for this page, but general container rules apply) */
    .page-about__feature-list,
    .page-about__product-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    .page-about__feature-item,
    .page-about__product-card {
        padding: 20px;
    }
    .page-about__product-title {
        font-size: 1.2rem;
    }
}