body {
    background: #F8FAFC;
    font-family: "Roboto", "PingFang SC", Arial, sans-serif;
    color: #1A2A49;
    margin: 0;
    padding: 0;
}
.product-detail-container {
    max-width: 1100px; /* 拓宽以适应更丰富内容 */
    margin: 48px auto;
    background: transparent; /* 改为透明，由section控制背景 */
    box-shadow: none;
    padding: 0; /* 移除内边距 */
    text-align: center;
}

/* 删除旧的详情页样式，采用新的section块 */
.product-detail-img,
.product-detail-desc,
.back-link,
.product-detail-tagline,
.product-detail-section {
    /* 这些旧样式将被新的section块样式替代 */
    display: none;
}

/* 新增：通用section样式 */
.detail-section {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.detail-section:nth-child(odd) {
    background: var(--white);
}
.detail-section:nth-child(even) {
    background: var(--light-gray);
}

/* 新增：详情页Hero区域 */
.detail-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    color: var(--white);
    background-size: cover;
    background-position: center;
    position: relative;
}
.detail-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 42, 73, 0.6), rgba(0, 0, 0, 0.4));
    z-index: 1;
}
.detail-hero .container {
    position: relative;
    z-index: 2;
}
.detail-hero h1 {
    font-size: 52px;
    color: var(--white);
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.detail-hero p {
    font-size: 20px;
    color: var(--text-light);
    max-width: 600px;
}
.detail-hero ul {
    list-style: none;
    padding: 0;
    margin-top: 24px;
}
.detail-hero ul li {
    color: var(--white);
    font-size: 17px;
    padding-left: 28px;
    position: relative;
    margin-bottom: 12px;
}
.detail-hero ul li::before {
    content: '✔';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* 新增：功能卡片美化与动画 */
.feature-card {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(0,192,255,0.08);
    padding: 32px 24px;
    text-align: center;
    transition: box-shadow 0.5s, transform 0.5s;
    animation: fadeInUp 1.2s;
    animation-fill-mode: both;
    position: relative;
    overflow: hidden;
}
.feature-card:hover {
    box-shadow: 0 16px 48px rgba(0,192,255,0.18);
    /* transform由JS控制 */
}
.feature-icon {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px;
}
.feature-card h3 {
    font-size: 22px;
    color: var(--brand-purple);
    font-weight: 700;
    margin-bottom: 10px;
}
.feature-card p {
    color: #2D3E50;
    font-size: 15px;
    margin-bottom: 0;
    line-height: 1.6;
}

/* 新增：应用场景卡片美化 */
.application-card {
    background: #F8FAFC;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0,192,255,0.06);
    padding: 28px 22px;
    text-align: left;
    transition: box-shadow 0.5s, transform 0.5s;
    animation: fadeInUp 1.2s;
    animation-fill-mode: both;
}
.application-card:hover {
    box-shadow: 0 12px 32px rgba(0,192,255,0.12);
    transform: translateY(-2px) scale(1.02);
}
.application-card h4 {
    font-size: 18px;
    color: var(--brand-purple);
    font-weight: 600;
    margin-bottom: 8px;
}
.application-card p {
    color: #2D3E50;
    font-size: 15px;
    margin-bottom: 0;
}

/* 新增：专家点评卡片美化 */
.testimonial-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0,192,255,0.08);
    padding: 28px 22px;
    text-align: left;
    animation: fadeInUp 1.2s;
    animation-fill-mode: both;
    position: relative;
}
.testimonial-card blockquote {
    font-size: 16px;
    color: #1A2A49;
    font-style: italic;
    margin-bottom: 8px;
    position: relative;
    padding-left: 18px;
}
.testimonial-card blockquote::before {
    content: "“";
    font-size: 32px;
    color: var(--brand-purple);
    position: absolute;
    left: 0;
    top: -8px;
    opacity: 0.5;
}
.testimonial-card div {
    font-size: 14px;
    font-weight: 600;
    margin-top: 12px;
}

/* section标题动画 */
.section-title {
    animation: fadeInUp 1.1s;
    animation-fill-mode: both;
}

/* 新增：渐变按钮样式 */
.btn-outline {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 12px;
    background: linear-gradient(135deg, #fff 80%, #00C0FF 100%);
    color: #00C0FF;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid #00C0FF;
    box-shadow: 0 4px 16px rgba(0,192,255,0.08);
    text-decoration: none;
    transition: background 0.3s, color 0.3s, border 0.3s;
}
.btn-outline:hover {
    background: linear-gradient(135deg, #FF8C00 80%, #00C0FF 100%);
    color: #fff;
    border-color: #FF8C00;
}

/* 新增：响应式优化 */
@media (max-width: 900px) {
    .product-detail-features .grid,
    .product-detail-applications .grid,
    .product-detail-extra .grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .feature-card,
    .application-card,
    .testimonial-card {
        padding: 18px 8px;
    }
}

/* Theme harmonization: Purple + Gold */
:root {
  --brand-purple: #8E3AC7;
  --brand-gold: #F5B301;
}
.feature-card h3 { color: var(--brand-purple); }
.application-card h4 { color: var(--brand-purple); }
.testimonial-card blockquote::before { color: var(--brand-purple); }
/* optional: emphasize highlights */
.detail-hero ul li::before { color: var(--brand-gold); }