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

/* body 已 padding-top: var(--header-offset)；页面禁止再写该变量 */
.page-promotions {
    font-family: 'Arial', sans-serif;
    color: var(--text-main); /* Dark background, so light text */
    background-color: var(--background-color-page);
    line-height: 1.6;
}

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

.page-promotions__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10px 0 60px 0; /* Small top padding, relying on body for header offset */
    overflow: hidden;
    background-color: var(--deep-green-color);
}

.page-promotions__hero-image-wrapper {
    width: 100%;
    max-height: 500px; /* Limit height for hero image */
    overflow: hidden;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.page-promotions__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.5); /* Darken image for text readability */
}

.page-promotions__hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 80px 20px;
    color: var(--text-main);
    background: rgba(0, 0, 0, 0.4); /* Semi-transparent overlay for text readability */
    border-radius: 10px;
    margin-top: 50px;
}

.page-promotions__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 700;
    color: var(--gold-color);
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.page-promotions__subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-promotions__btn-primary,
.page-promotions__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    white-space: nowrap;
    box-sizing: border-box;
}

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

.page-promotions__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

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

.page-promotions__btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-main);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.page-promotions__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
    padding-top: 40px;
}

.page-promotions__text-block {
    font-size: 1.05rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 25px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-promotions__overview-section,
.page-promotions__categories-section,
.page-promotions__how-to-claim-section,
.page-promotions__terms-section,
.page-promotions__video-section,
.page-promotions__faq-section,
.page-promotions__conclusion-section {
    padding: 60px 0;
    background-color: var(--background-color-page);
}

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

.page-promotions__card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    color: var(--text-main); /* Light text on dark card background */
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-promotions__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.page-promotions__card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: none; /* Ensure no filter is applied to images */
}

.page-promotions__card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gold-color);
    padding: 20px 20px 10px;
}

.page-promotions__card-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding: 0 20px 20px;
    flex-grow: 1;
}

.page-promotions__card-button {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
    align-self: center;
}

.page-promotions__steps-list {
    list-style: none;
    counter-reset: step-counter;
    padding: 0;
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-promotions__steps-list li {
    position: relative;
    padding-left: 60px;
    margin-bottom: 30px;
    color: var(--text-secondary);
}

.page-promotions__steps-list li::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-promotions__step-title {
    font-size: 1.3rem;
    color: var(--gold-color);
    margin-bottom: 5px;
}

.page-promotions__terms-list {
    list-style: none;
    padding: 0;
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-promotions__terms-list li {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    font-size: 1rem;
    color: var(--text-secondary);
}

.page-promotions__terms-list li strong {
    color: var(--text-main);
}

.page-promotions__video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    max-width: 100%;
    background: #000;
    margin-top: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    width: 100%; /* Desktop width */
}

.page-promotions__video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
}

.page-promotions__faq-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.page-promotions__faq-item[open] {
    background-color: var(--deep-green-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

.page-promotions__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    cursor: pointer;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
    list-style: none; /* Hide default marker */
}

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

.page-promotions__faq-qtext {
    flex-grow: 1;
    color: var(--text-main);
}

.page-promotions__faq-toggle {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.page-promotions__faq-item[open] .page-promotions__faq-toggle {
    transform: rotate(45deg); /* Change + to X or - */
    color: var(--gold-color);
}

.page-promotions__faq-answer {
    padding: 0 20px 20px;
    font-size: 1rem;
    color: var(--text-secondary);
}

.page-promotions__conclusion-section {
    text-align: center;
    padding-bottom: 80px;
}

.page-promotions__conclusion-section .page-promotions__cta-buttons {
    margin-top: 40px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-promotions__hero-content {
        padding: 60px 20px;
    }
    .page-promotions__main-title {
        font-size: clamp(2rem, 4.5vw, 3rem);
    }
    .page-promotions__subtitle {
        font-size: clamp(0.9rem, 2.2vw, 1.2rem);
    }
    .page-promotions__card-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-promotions__container {
        padding: 0 15px;
    }
    .page-promotions__hero-content {
        padding: 40px 15px;
        margin-top: 20px;
    }
    .page-promotions__main-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
    }
    .page-promotions__subtitle {
        font-size: clamp(0.9rem, 2.8vw, 1.1rem);
    }
    .page-promotions__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .page-promotions__btn-primary,
    .page-promotions__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-promotions__card-grid {
        grid-template-columns: 1fr;
    }
    .page-promotions__section-title {
        font-size: clamp(1.5rem, 5vw, 2.2rem);
        margin-bottom: 30px;
        padding-top: 30px;
    }
    .page-promotions__text-block {
        font-size: 0.95rem;
    }
    .page-promotions__steps-list li {
        padding-left: 50px;
    }
    .page-promotions__steps-list li::before {
        width: 35px;
        height: 35px;
        font-size: 1.3rem;
    }
    .page-promotions__step-title {
        font-size: 1.1rem;
    }
    .page-promotions__video-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 0;
        padding-right: 0;
        overflow: hidden !important;
    }
    .page-promotions__video {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-promotions__faq-question {
        font-size: 1rem;
        padding: 15px;
    }
    .page-promotions__faq-toggle {
        font-size: 1.5rem;
    }
    .page-promotions__faq-answer {
        padding: 0 15px 15px;
    }
    .page-promotions__hero-image {
      filter: brightness(0.4); /* Even darker for mobile */
    }
}

@media (max-width: 480px) {
    .page-promotions__hero-content {
        padding: 30px 10px;
    }
    .page-promotions__main-title {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }
    .page-promotions__subtitle {
        font-size: clamp(0.85rem, 3.5vw, 1rem);
    }
    .page-promotions__btn-primary,
    .page-promotions__btn-secondary {
        padding: 12px 20px;
        font-size: 1rem;
    }
    .page-promotions__section-title {
        font-size: clamp(1.3rem, 6vw, 1.8rem);
    }
    .page-promotions__card-title {
        font-size: 1.3rem;
    }
    .page-promotions__card-description {
        font-size: 0.9rem;
    }
    .page-promotions__steps-list li {
        padding-left: 45px;
    }
    .page-promotions__steps-list li::before {
        width: 30px;
        height: 30px;
        font-size: 1.2rem;
    }
}