* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
body {
    background: linear-gradient(135deg, #dcebf7 0%, #f0f4fa 50%, #e6f0fa 100%);
    color: #333;
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 卡片通用样式 */
.card-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    padding: 40px;
    margin-bottom: 40px;
}

/* ----- 第一部分：Hero 顶部 ----- */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}
.hero-left {
    flex: 1;
}
/* 这里的 src 指向 img/101.png */
.hero-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
}
.hero-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 12px;
}

.hero-left h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}
.hero-left h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}
.hero-left p {
    color: #666;
    margin-bottom: 25px;
    max-width: 450px;
}

.btn-primary {
    display: inline-block;
    background: #0d6efd;
    color: #fff;
    padding: 12px 40px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    font-size: 16px;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}
.btn-primary:hover {
    background: #0b5ed7;
}
.hero-left .sub-text {
    font-size: 12px;
    color: #999;
    margin-top: 12px;
}

.hero-right {
    flex: 1;
    display: flex;
    justify-content: center;
}
/* 这里的 src 指向 img/001.png */
.main-poster-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* ----- 第二部分：专业技术标题 ----- */
.section-title {
    text-align: center;
    margin-bottom: 30px;
}
.section-title h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}
.section-title p {
    color: #666;
    font-size: 14px;
}
.section-title .highlight {
    color: #d32f2f;
    font-weight: 600;
}

/* ----- 第三部分：卡片网格 ----- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}
.product-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    text-align: left;
    border: 1px solid #f0f0f0;
    transition: transform 0.3s;
}
.product-card:hover {
    transform: translateY(-5px);
}

.p-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
}
.p-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.product-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.product-card p {
    font-size: 13px;
    color: #888;
    margin-bottom: 4px;
}

.btn-download {
    display: block;
    width: 100%;
    background: #0d6efd;
    color: #fff;
    text-align: center;
    padding: 10px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 15px;
    border: none;
    cursor: pointer;
}
.btn-download:hover {
    background: #0b5ed7;
}
.p-bottom-text {
    font-weight: 600;
    font-size: 14px;
    margin: 10px 0 5px;
}

.gift-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 50px;
    margin-bottom: 50px;
}
.gift-card {
    border-radius: 8px;
    padding: 25px;
    border: 2px solid transparent;
    position: relative;
}
.gift-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin: 10px 0 5px;
}
.gift-card p {
    font-size: 13px;
    color: #555;
}
.gift-card .mini-icon {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    margin-bottom: 5px;
}

.gift-purple {
    background: #f3e5f5;
    border-color: #ce93d8;
}
.gift-purple .mini-icon {
    background: #d32f2f;
    color: #fff;
}
.gift-yellow {
    background: #fff3e0;
    border-color: #ffb74d;
}
.gift-yellow .mini-icon {
    background: #ffb300;
    color: #fff;
}
.gift-blue {
    background: #e3f2fd;
    border-color: #64b5f6;
}
.gift-blue .mini-icon {
    background: #3f51b5;
    color: #fff;
}
.gift-pink {
    background: #fce4ec;
    border-color: #f48fb1;
}
.gift-pink .mini-icon {
    background: #d32f2f;
    color: #fff;
}

/* ----- 第五部分：用户评价 ----- */
.review-section {
    background: #f5f7fa;
    padding: 40px 0;
    border-radius: 16px;
    margin-bottom: 40px;
}
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.review-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
}
.review-card .quote {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 30px;
    line-height: 1.8;
}
.review-user {
    display: flex;
    align-items: center;
    gap: 12px;
}
.review-user .avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 20px;
    color: #aaa;
}
.review-user .info h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 2px;
}
.review-user .info span {
    font-size: 12px;
    color: #999;
}

/* ----- 第六部分：FAQ ----- */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}
.faq-item {
    background: #fff;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid #f0f0f0;
}
.faq-item.active {
    border-color: #0d6efd;
}
.faq-q {
    background: #fff;
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s;
}
.faq-item.active .faq-q {
    background: #0d6efd;
    color: #fff;
}
.faq-q .plus {
    width: 24px;
    height: 24px;
    background: #0d6efd;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 300;
}
.faq-item.active .faq-q .plus {
    background: #fff;
    color: #0d6efd;
    transform: rotate(45deg);
}
.faq-a {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: 0.3s;
    background: #f9f9f9;
    color: #666;
}
.faq-item.active .faq-a {
    padding: 20px 25px;
    max-height: 200px;
}

@media (max-width: 992px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
    }
    .hero-left p {
        margin: 0 auto 25px;
    }
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .gift-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .review-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .grid-3 {
        grid-template-columns: 1fr;
    }
    .gift-grid {
        grid-template-columns: 1fr;
    }
    .review-grid {
        grid-template-columns: 1fr;
    }
    .hero-left h1 {
        font-size: 24px;
    }
    .hero-left h2 {
        font-size: 20px;
    }
}