:root {
    --primary-color: #26A9E0;
    --secondary-color: #FFFFFF;
    --text-color-dark: #333333;
    --text-color-light: #ffffff;
    --login-button-color: #EA7C07;
    --background-color: #FFFFFF;
    --border-color: #e0e0e0;
    --warning-color-bg: #fff3cd; /* Light yellow background */
    --warning-color-border: #ffeeba;
    --warning-color-text: #856404; /* Dark yellow text */
    --responsibility-color-bg: #d1ecf1; /* Light blue background */
    --responsibility-color-border: #bee5eb;
    --responsibility-color-text: #0c5460; /* Dark blue text */
    --padding-mobile: 15px;
}

.page-register {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color-dark); /* Default text color for light body background */
    background-color: var(--background-color);
}

.page-register__hero-section {
    padding-top: 10px; /* Small top padding, assuming shared.css handles body padding-top */
    position: relative;
    overflow: hidden;
    background-color: var(--primary-color); /* Dark background for hero */
    color: var(--text-color-light);
}

.page-register__hero-content-wrapper {
    display: flex;
    flex-direction: column; /* Ensure image is above text */
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1; /* Ensure content is above any potential background layers */
}

.page-register__hero-image {
    width: 100%;
    max-width: 1200px; /* Actual display width in a 1200px container */
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 30px; /* Space between image and text block */
}

.page-register__hero-text-block {
    text-align: center;
    max-width: 800px;
    margin-bottom: 40px;
}

.page-register__main-title {
    font-size: clamp(2em, 4vw, 2.8em); /* Flexible font size for H1 */
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-color-light);
}

.page-register__lead-paragraph {
    font-size: 1.15em;
    margin-bottom: 30px;
    color: var(--text-color-light);
}

.page-register__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%; /* Ensure container takes full width for responsive behavior */
    max-width: 100%;
    box-sizing: border-box;
}

.page-register__btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: center;
    max-width: 100%; /* Important for button responsiveness */
    box-sizing: border-box;
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word; /* Allow long words to break */
}

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

.page-register__btn-primary:hover {
    background-color: #1e87bb; /* Darken primary */
    transform: translateY(-2px);
}

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

.page-register__btn-secondary:hover {
    background-color: #ebf7fd; /* Lighten primary */
    transform: translateY(-2px);
}

.page-register__btn--large {
    padding: 16px 35px;
    font-size: 1.2em;
    min-width: 220px;
}

/* General Section Styling */
.page-register__section {
    padding: 60px 0;
    background-color: var(--background-color);
}

.page-register__section.page-register__dark-bg {
    background-color: var(--primary-color);
    color: var(--text-color-light);
}

.page-register__container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box; /* Ensure padding is included in width */
}

.page-register__container--center {
    text-align: center;
}

.page-register__section-title {
    font-size: 2.2em;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-color-dark);
}

.page-register__section-title.page-register__section-title--light {
    color: var(--text-color-light);
}

.page-register__section-description {
    font-size: 1.05em;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
    color: var(--text-color-dark);
}

.page-register__section-description.page-register__section-description--light {
    color: var(--text-color-light);
}

/* Guide Steps Section */
.page-register__guide-steps {
    padding-bottom: 30px;
}

.page-register__step-card {
    background-color: var(--secondary-color);
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    padding: 40px;
    margin-bottom: 40px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.page-register__step-title {
    font-size: 1.8em;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--primary-color);
}

.page-register__figure {
    margin: 0 auto 25px auto;
    max-width: 680px;
}

.page-register__step-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    min-width: 200px; /* Minimum image size */
    min-height: 200px; /* Minimum image size */
}

.page-register__figcaption {
    font-style: italic;
    font-size: 0.9em;
    color: #666;
    margin-top: 10px;
}

.page-register__step-text {
    font-size: 1.05em;
    margin-bottom: 20px;
    text-align: left;
}

.page-register__step-list {
    list-style: disc;
    padding-left: 30px;
    margin-bottom: 25px;
    text-align: left;
}

.page-register__step-list li {
    margin-bottom: 10px;
    font-size: 1.0em;
}

.page-register__btn-inline {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border: 2px solid var(--primary-color);
    padding: 10px 25px;
    font-size: 1.0em;
    margin-top: 15px;
}

.page-register__btn-inline:hover {
    background-color: #1e87bb; /* Darken primary */
}

/* Benefits Section */
.page-register__benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-register__benefit-card {
    background-color: rgba(255, 255, 255, 0.15); /* Slightly transparent white for dark background */
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-color-light);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-register__benefit-icon {
    width: 100%; /* Ensure icon takes full width of its card, for max-width 400px */
    max-width: 200px; /* Actual display size, not original image size */
    height: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    min-width: 200px; /* Minimum image size */
    min-height: 200px; /* Minimum image size */
}

.page-register__benefit-title {
    font-size: 1.4em;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color-light);
}

.page-register__benefit-text {
    font-size: 0.95em;
    margin-bottom: 20px;
    flex-grow: 1; /* Make text take available space */
}

.page-register__btn-text-link {
    color: var(--secondary-color);
    text-decoration: underline;
    font-weight: 500;
    font-size: 0.95em;
    margin-top: auto; /* Push link to bottom */
}

.page-register__btn-text-link:hover {
    color: #e0e0e0; /* Lighten secondary */
}

/* Important Notes Section */
.page-register__important-notes {
    padding-top: 30px;
    padding-bottom: 60px;
}

.page-register__info-card {
    background-color: var(--secondary-color);
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.page-register__info-card--warning {
    background-color: var(--warning-color-bg);
    border-color: var(--warning-color-border);
    color: var(--warning-color-text);
}

.page-register__info-card--responsibility {
    background-color: var(--responsibility-color-bg);
    border-color: var(--responsibility-color-border);
    color: var(--responsibility-color-text);
}

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

.page-register__info-card--warning .page-register__card-title {
    color: var(--warning-color-text);
}

.page-register__info-card--responsibility .page-register__card-title {
    color: var(--responsibility-color-text);
}

.page-register__card-text {
    font-size: 1.0em;
    margin-bottom: 15px;
}

/* FAQ Section */
.page-register__faq-section {
    background-color: #f9f9f9; /* Light gray background for FAQ */
    padding-top: 30px;
    padding-bottom: 60px;
}

.page-register__faq-list {
    margin-top: 40px;
}

.page-register__faq-item {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-register__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.15em;
    font-weight: 600;
    cursor: pointer;
    color: var(--primary-color);
    background-color: var(--secondary-color);
    list-style: none; /* For details/summary */
    position: relative;
    user-select: none;
}

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

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

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

.page-register__faq-item[open] .page-register__faq-toggle {
    transform: rotate(45deg); /* Changes + to x */
}

.page-register__faq-answer {
    padding: 0 25px 20px 25px;
    font-size: 1.0em;
    color: var(--text-color-dark);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.page-register__faq-item[open] .page-register__faq-answer {
    max-height: 500px; /* Sufficiently large to show content */
    transition: max-height 0.5s ease-in;
}

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

.page-register__btn-center {
    display: block;
    margin: 40px auto 0 auto;
    width: fit-content;
}

/* Call to Action Section */
.page-register__call-to-action {
    padding-bottom: 80px;
}

/* Copyright */
.page-register__copyright {
    background-color: #1a1a1a;
    color: #ccc;
    padding: 20px 0;
    font-size: 0.9em;
    text-align: center;
}

.page-register__copyright p {
    margin: 0;
}

/* Global Image Sizing for content images */
.page-register img {
    max-width: 100%;
    height: auto;
    display: block; /* Prevent extra space below images */
}

/* Mobile Responsive Styles */
@media (max-width: 1024px) {
    .page-register__main-title {
        font-size: clamp(1.8em, 3.5vw, 2.5em);
    }
    .page-register__section-title {
        font-size: 2em;
    }
    .page-register__hero-image {
        max-width: 900px;
    }
    .page-register__benefits-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

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

    /* 1. 顶区标题 + 双 CTA */
    .page-register__hero-section {
        padding-top: 10px !important; /* Small top padding */
    }

    .page-register__hero-content-wrapper {
        padding: var(--padding-mobile);
    }

    .page-register__hero-image {
        margin-bottom: 20px;
    }

    .page-register__hero-text-block {
        margin-bottom: 30px;
    }

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

    .page-register__lead-paragraph {
        font-size: 1em;
    }

    .page-register__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        padding-left: var(--padding-mobile);
        padding-right: var(--padding-mobile);
    }

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

    .page-register__btn--large {
        min-width: unset;
    }

    /* 2. 单栏长文容器 */
    .page-register__container {
        padding-left: var(--padding-mobile) !important;
        padding-right: var(--padding-mobile) !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-register__section {
        padding: 40px 0;
    }

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

    .page-register__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-register__step-card,
    .page-register__info-card,
    .page-register__benefit-card {
        padding: 25px;
        margin-bottom: 25px;
    }

    .page-register__step-title {
        font-size: 1.5em;
        margin-bottom: 20px;
    }

    .page-register__step-text,
    .page-register__step-list li,
    .page-register__card-text {
        font-size: 0.95em;
    }

    .page-register__card-title {
        font-size: 1.4em;
    }

    /* 3. 通用图片与 figure */
    .page-register img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        min-width: 200px !important; /* Ensure min size on mobile too */
        min-height: 200px !important; /* Ensure min size on mobile too */
    }
    
    .page-register__figure {
        margin-left: 0;
        margin-right: 0;
    }

    /* 4. 按钮与按钮容器 */
    .page-register__btn-inline {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: var(--padding-mobile);
        padding-right: var(--padding-mobile);
    }

    .page-register__btn-center {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: var(--padding-mobile);
        padding-right: var(--padding-mobile);
    }

    /* Benefits grid for mobile */
    .page-register__benefits-grid {
        grid-template-columns: 1fr; /* Single column on mobile */
        gap: 25px;
    }

    /* 5. 注册教程与 FAQ 区块 */
    .page-register__faq-question {
        font-size: 1em;
        padding: 15px 20px;
    }

    .page-register__faq-answer {
        padding: 0 20px 15px 20px;
        font-size: 0.95em;
    }
    
    .page-register__copyright {
        padding: 15px 0;
    }
}