/* ==========================================================================
   Product Pages Styles
   ========================================================================== */

/* ==========================================================================
   Hero Section
   ========================================================================== */

.product-hero {
    position: relative;
    padding: 6rem 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(var(--yali-primary-rgb), 0.2);
    color: var(--yali-primary-light);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--yali-radius-full);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #fff;
    background: linear-gradient(90deg, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.hero-stat .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--yali-primary-light);
}

.hero-stat .stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--yali-radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* Hero Decoration */
.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.decoration-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: rgba(99, 102, 241, 0.3);
    top: -300px;
    right: -200px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: rgba(34, 211, 238, 0.2);
    bottom: -200px;
    left: -100px;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.product-features {
    padding: 6rem 0;
    background: var(--yali-bg);
}

.section-header {
    margin-bottom: 4rem;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--yali-secondary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--yali-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--yali-card);
    border-radius: var(--yali-radius-lg);
    padding: 2rem;
    box-shadow: var(--yali-shadow);
    transition: var(--yali-transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--yali-shadow-lg);
}

.feature-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--yali-primary-rgb), 0.1);
    color: var(--yali-primary);
    border-radius: var(--yali-radius);
    margin-bottom: 1.25rem;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    display: block;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--yali-secondary);
    margin-bottom: 0.75rem;
}

.feature-description {
    color: var(--yali-text-muted);
    line-height: 1.6;
    margin: 0;
}

.feature-solution {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(99, 102, 241, 0.06);
    border-radius: var(--yali-radius);
    font-size: 13px;
    color: var(--yali-text-muted);
    line-height: 1.6;
}

.feature-solution .solution-arrow {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    flex-shrink: 0;
    fill: var(--yali-primary);
}

/* Audience Grid - 8个场景两行对齐 */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .audience-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.product-cta {
    padding: 5rem 0;
}

.product-cta.cta-gradient {
    background: var(--yali-gradient);
    color: #fff;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-gradient .cta-title {
    color: #fff;
}

.cta-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.cta-gradient .btn-outline {
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

.cta-gradient .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

/* ==========================================================================
   Highlights Section
   ========================================================================== */

.product-highlights {
    padding: 6rem 0;
    background: var(--yali-card);
}

.highlight-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

.highlight-item:last-child {
    margin-bottom: 0;
}

.highlight-item:nth-child(even) {
    direction: rtl;
}

.highlight-item:nth-child(even)>* {
    direction: ltr;
}

.highlight-content {
    padding: 2rem 0;
}

.highlight-label {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(var(--yali-primary-rgb), 0.1);
    color: var(--yali-primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--yali-radius-full);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.highlight-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--yali-secondary);
    margin-bottom: 1rem;
}

.highlight-text {
    color: var(--yali-text-muted);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.highlight-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.highlight-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--yali-text);
}

.highlight-list li::before {
    content: '✓';
    color: var(--yali-success);
    font-weight: 700;
}

.highlight-image img {
    border-radius: var(--yali-radius-lg);
    box-shadow: var(--yali-shadow-lg);
}

/* ==========================================================================
   Modules/Specs Section
   ========================================================================== */

.product-modules {
    padding: 6rem 0;
    background: var(--yali-bg-alt);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.module-card {
    background: var(--yali-card);
    border-radius: var(--yali-radius);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--yali-shadow-sm);
    transition: var(--yali-transition);
}

.module-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--yali-shadow);
}

.module-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.module-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--yali-secondary);
}

/* ==========================================================================
   Requirements Section
   ========================================================================== */

.product-requirements {
    padding: 4rem 0;
    background: var(--yali-bg);
}

.requirements-box {
    background: var(--yali-card);
    border-radius: var(--yali-radius-lg);
    padding: 2rem;
    box-shadow: var(--yali-shadow);
}

.requirements-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--yali-secondary);
}

.requirements-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.requirements-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--yali-text-muted);
}

.requirements-list li::before {
    content: '•';
    color: var(--yali-primary);
    font-weight: bold;
}

/* ==========================================================================
   Placeholder Images
   ========================================================================== */

.placeholder-image {
    background: var(--yali-bg);
    border-radius: var(--yali-radius-lg);
    padding: 3rem;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.placeholder-image i {
    font-size: 5rem;
    color: var(--yali-primary);
    margin-bottom: 1rem;
}

.placeholder-image p {
    color: var(--yali-text-muted);
    margin: 0 0 1rem;
}

.badge-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.badge-group .badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--yali-primary);
    color: #fff;
    font-size: 0.75rem;
    border-radius: var(--yali-radius-full);
}

/* ==========================================================================
   Feature Lists
   ========================================================================== */

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.875rem;
    color: var(--yali-text-muted);
}

.feature-list li {
    margin-bottom: 0.5rem;
    padding-left: 1.25rem;
    position: relative;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--yali-success);
    font-weight: 700;
}

/* ==========================================================================
   Comparison Table
   ========================================================================== */

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--yali-card);
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid var(--yali-border);
}

.comparison-table thead {
    background: var(--yali-secondary);
    color: #fff;
}

.comparison-table thead th {
    font-weight: 600;
}

.comparison-table .highlight-col {
    background: var(--yali-primary);
    color: #fff;
}

.comparison-table .highlight-cell {
    background: rgba(var(--yali-primary-rgb), 0.1);
    color: var(--yali-primary);
    font-weight: 700;
}

.comparison-table tbody tr:hover {
    background: var(--yali-bg);
}

/* ==========================================================================
   Requirements Grid
   ========================================================================== */

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.requirement-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.requirement-icon {
    width: 50px;
    height: 50px;
    background: var(--yali-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.requirement-title {
    font-weight: 600;
    color: var(--yali-secondary);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--yali-card);
    border-radius: var(--yali-radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--yali-shadow-sm);
    overflow: hidden;
}

.faq-question {
    padding: 1.25rem;
    font-weight: 600;
    color: var(--yali-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--yali-transition);
}

.faq-question:hover {
    background: var(--yali-primary);
    color: #fff;
}

.faq-question:hover i {
    color: #fff;
}

.faq-question i {
    color: var(--yali-primary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.25rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--yali-text-muted);
    line-height: 1.7;
    border-top: 1px solid transparent;
}

.faq-item.active .faq-answer {
    padding: 1.25rem;
    max-height: 500px;
    border-top-color: var(--yali-border);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {

    .hero-grid,
    .highlight-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .highlight-item:nth-child(even) {
        direction: ltr;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 768px) {

    .product-hero,
    .product-features,
    .product-highlights,
    .product-modules {
        padding: 4rem 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .section-title,
    .cta-title {
        font-size: 1.75rem;
    }

    .cta-actions {
        flex-direction: column;
    }

    .cta-actions .btn {
        width: 100%;
    }

    .comparison-table {
        font-size: 0.75rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }

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

    .placeholder-image {
        padding: 2rem;
        min-height: 200px;
    }

    .placeholder-image i {
        font-size: 3rem;
    }
}