/* ===================================
   产品介绍页 - 样式文件
   =================================== */

/* 页面Banner */
.product-banner {
    position: relative;
    min-height: 420px;
    background: var(--bg-gradient);
    padding-top: 70px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.product-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.1));
}

.product-banner .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 60px 20px;
}

.product-banner-text {
    color: white;
}

.product-banner-title {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
}

.product-banner-title .highlight {
    display: block;
    color: #FFE5D9;
}

.product-banner-desc {
    font-size: 17px;
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: 28px;
}

.product-banner-stats {
    display: flex;
    gap: 36px;
}

.product-banner-stat {
    text-align: center;
}

.product-banner-stat .stat-number {
    display: block;
    font-size: 30px;
    font-weight: 700;
}

.product-banner-stat .stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.product-banner-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-banner-phone {
    max-width: 280px;
    width: 100%;
    height: auto;
    border-radius: 36px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: float 6s ease-in-out infinite;
}

.product-banner-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}

.product-banner-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

/* 简介 Section */
.product-intro {
    padding: 100px 0;
    background: var(--bg-primary);
}

.product-intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.product-intro-text {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 2;
    text-align: left;
}

.product-intro-text p {
    margin-bottom: 18px;
}

/* 核心功能展示 */
.product-features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.product-features-grid {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.product-feature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: white;
    border-radius: 20px;
    padding: 48px;
    box-shadow: var(--shadow-sm);
    /* 滚动动画初始状态 */
    opacity: 0;
    transform: translateY(40px);
}

.product-feature-section.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.product-feature-section:hover {
    box-shadow: var(--shadow-md);
}

.product-feature-section.reverse .product-feature-content {
    order: 2;
}

.product-feature-section.reverse .product-feature-gallery {
    order: 1;
}

.product-feature-badge {
    display: inline-block;
    padding: 6px 20px;
    background: var(--bg-gradient);
    color: white;
    font-size: 14px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
}

.product-feature-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.product-feature-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-feature-points {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.product-feature-point {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.product-feature-point .point-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    margin-top: 2px;
}

.product-feature-gallery {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.product-feature-gallery .gallery-item {
    flex: 1;
    max-width: 220px;
    overflow: hidden;
    border-radius: 16px;
    background: var(--bg-secondary);
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.product-feature-gallery .gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
}

.product-feature-gallery .gallery-item:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 8px 24px rgba(91, 119, 242, 0.2);
}

/* 题库模块 - 图标网格 */
.product-question-bank {
    padding: 100px 0;
    background: var(--bg-primary);
}

.bank-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.bank-card {
    background: white;
    border: 1px solid #eee;
    border-radius: 16px;
    padding: 36px 24px;
    text-align: center;
    transition: all 0.4s ease;
    /* 滚动动画初始状态 */
    opacity: 0;
    transform: translateY(30px);
}

.bank-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.4s ease;
}

.bank-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.bank-card-icon {
    font-size: 44px;
    margin-bottom: 18px;
}

.bank-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.bank-card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 跨平台支持 */
.product-platform {
    padding: 100px 0;
    background: var(--bg-gradient);
    color: white;
}

.product-platform-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-platform-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.product-platform-desc {
    font-size: 17px;
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: 32px;
}

.platform-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.platform-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    transition: background 0.3s ease;
}

.platform-item:hover {
    background: rgba(255,255,255,0.25);
}

.platform-item .platform-icon {
    font-size: 22px;
}

.product-platform-image {
    display: flex;
    justify-content: center;
}

.product-platform-screenshot {
    max-width: 500px;
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* 荣誉奖项 */
.product-honors {
    padding: 100px 0;
    background: var(--bg-primary);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.honor-card {
    background: white;
    border: 1px solid #eee;
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(30px);
}

.honor-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.4s ease;
}

.honor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.honor-card-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.honor-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.honor-card-detail {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 适用人群 */
.product-audience {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 60px;
}

.audience-card {
    background: white;
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    opacity: 0;
    transform: scale(0.9);
}

.audience-card.animate-in {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.4s ease;
}

.audience-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.audience-card-icon {
    font-size: 36px;
    margin-bottom: 14px;
}

.audience-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.audience-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 信息栏 */
.product-info-table {
    padding: 100px 0;
    background: var(--bg-primary);
}

.info-table-wrapper {
    max-width: 860px;
    margin: 0 auto;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid #eee;
}

.info-table th,
.info-table td {
    padding: 18px 28px;
    text-align: left;
    font-size: 15px;
    border-bottom: 1px solid #f0f0f0;
    transition: background 0.3s ease;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
    border-bottom: none;
}

.info-table th {
    width: 140px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 600;
    white-space: nowrap;
}

.info-table td {
    color: var(--text-secondary);
    background: white;
    line-height: 1.6;
}

.info-table tr:hover th {
    background: rgba(91, 119, 242, 0.06);
}

.info-table tr:hover td {
    background: rgba(91, 119, 242, 0.02);
}

.info-table td a {
    color: var(--primary-color);
    font-weight: 500;
}

.info-table td a:hover {
    text-decoration: underline;
}

/* CTA Section */
.product-cta {
    padding: 80px 0;
    background: var(--bg-primary);
    text-align: center;
}

.product-cta-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.product-cta-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

.product-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.product-cta .btn-primary {
    background: var(--primary-color);
    color: white;
    padding: 16px 40px;
}

.product-cta .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(91, 119, 242, 0.3);
}

.product-cta .btn-outline {
    padding: 16px 40px;
}

/* ===================================
   响应式设计
   =================================== */
@media (max-width: 1024px) {
    .product-banner .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .product-banner-image {
        order: -1;
    }

    .product-banner-stats {
        justify-content: center;
    }

    .product-feature-section {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 32px;
    }

    .product-feature-section.reverse .product-feature-content,
    .product-feature-section.reverse .product-feature-gallery {
        order: unset;
    }

    .product-platform-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .product-platform-image {
        margin-top: 32px;
    }

    .platform-list {
        justify-content: center;
    }

    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bank-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .product-banner {
        min-height: 360px;
    }

    .product-banner-title {
        font-size: 32px;
    }

    .product-banner-phone {
        max-width: 220px;
    }

    .product-banner-stats {
        gap: 24px;
    }

    .product-feature-title {
        font-size: 22px;
    }

    .product-feature-gallery {
        flex-wrap: nowrap;
        gap: 10px;
    }

    .product-feature-gallery .gallery-item {
        max-width: 160px;
    }

    .product-platform-title {
        font-size: 28px;
    }

    .honors-grid {
        grid-template-columns: 1fr;
    }

    .bank-grid {
        grid-template-columns: 1fr;
    }

    .audience-grid {
        grid-template-columns: 1fr 1fr;
    }

    .product-cta-title {
        font-size: 28px;
    }

    .product-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .product-banner-title {
        font-size: 26px;
    }

    .product-banner-desc {
        font-size: 15px;
    }

    .product-feature-section {
        padding: 24px;
    }

    .product-feature-gallery .gallery-item {
        max-width: 130px;
    }

    .audience-grid {
        grid-template-columns: 1fr;
    }

    .info-table th,
    .info-table td {
        padding: 14px 16px;
        font-size: 14px;
    }

    .info-table th {
        width: 110px;
    }
}