/* ============================================
   力能肥业官网 - 首页样式 v2
   ============================================ */

/* ========== Hero Innovation ========== */
.hero-innovation {
    position: relative;
    width: 100%;
    height: 640px;
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.hero-slide.active {
    opacity: 1;
    z-index: 2;
}

.hero-slide img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(105%);
    transform: scale(1.02);
}

.hero-overlay {
    position: relative;
    z-index: 3;
    max-width: 620px;
    margin: 120px 0 0 120px;
    padding: var(--spacing-3xl);
    background: linear-gradient(135deg, rgba(12, 48, 24, 0.85), rgba(2, 136, 209, 0.75));
    backdrop-filter: blur(8px);
    border-radius: var(--border-radius-xl);
    color: var(--color-white);
    box-shadow: 0 24px 48px rgba(17, 51, 23, 0.28);
}

.hero-overlay h1 {
    font-size: clamp(32px, 4vw, 48px);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hero-overlay p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.hero-tag {
    background: rgba(124, 179, 66, 0.2);
    color: var(--color-white);
}

.hero-insights {
    display: flex;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero-insight {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.hero-metric {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.hero-label {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    font-size: 24px;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: all var(--transition-base);
    z-index: 5;
}

.hero-control:hover {
    background: rgba(255, 255, 255, 0.35);
}

.hero-control.prev { left: 28px; }
.hero-control.next { right: 28px; }

/* ========== Section Head ========== */
.section-head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto var(--spacing-2xl);
}

.section-head.align-left {
    text-align: left;
    margin-left: 0;
}

.section-head h2 {
    font-size: clamp(30px, 4vw, 42px);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-heading);
}

.section-head p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

/* ========== Data Center ========== */
.section-data-center {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, rgba(243, 250, 236, 0.8), rgba(255, 255, 255, 0.9));
}

.data-grid {
    display: grid;
    gap: var(--spacing-2xl);
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.data-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: 0 24px 45px rgba(91, 127, 86, 0.14);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.data-card::after {
    content: '';
    position: absolute;
    inset: auto -40px -40px auto;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(124, 179, 66, 0.45), transparent 70%);
    opacity: 0.6;
}

.data-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.data-update {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.metric-value {
    font-size: clamp(36px, 3.5vw, 52px);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
}

.metric-unit {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-secondary-dark);
}

.metric-trend {
    display: inline-flex;
    align-items: center;
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    gap: 6px;
}

.metric-trend.positif {
    color: var(--color-primary-dark);
}

.data-footnote {
    margin-top: var(--spacing-2xl);
    font-size: 14px;
    color: var(--color-text-tertiary);
}

/* ========== Comparison ========== */
.section-comparison {
    padding: var(--spacing-4xl) 0;
}

.comparison-grid {
    display: grid;
    gap: var(--spacing-2xl);
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.comparison-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: 0 20px 40px rgba(52, 84, 64, 0.12);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.comparison-header h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-text-heading);
}

.comparison-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.comparison-images {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    height: 220px;
}

.comparison-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(80%);
}

.comparison-after {
    position: absolute;
    inset: 0;
    overflow: hidden;
    --reveal: 60%;
    clip-path: polygon(0 0, var(--reveal) 0, var(--reveal) 100%, 0% 100%);
}

.comparison-after img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(105%);
}

.comparison-label {
    position: absolute;
    top: var(--spacing-md);
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.55);
    color: var(--color-white);
    border-radius: var(--border-radius-full);
    font-size: 12px;
    letter-spacing: 2px;
}

.comparison-label.before { left: var(--spacing-md); }
.comparison-label.after { right: var(--spacing-md); }

.comparison-card input[type="range"] {
    -webkit-appearance: none;
    height: 4px;
    border-radius: var(--border-radius-full);
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    outline: none;
}

.comparison-card input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-white);
    border: 3px solid var(--color-secondary);
    box-shadow: 0 4px 12px rgba(2, 136, 209, 0.35);
}

.comparison-card input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-white);
    border: 3px solid var(--color-secondary);
    box-shadow: 0 4px 12px rgba(2, 136, 209, 0.35);
}

.comparison-data {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-md);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.comparison-data strong {
    display: block;
    font-size: 18px;
    color: var(--color-secondary-dark);
}

/* ========== Experts ========== */
.section-experts {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(120deg, rgba(2, 136, 209, 0.08), rgba(124, 179, 66, 0.08));
}

.experts-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-2xl);
}

.expert-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 20px 40px rgba(48, 82, 91, 0.12);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.expert-avatar {
    height: 220px;
    overflow: hidden;
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-content {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.expert-role {
    font-size: 14px;
    color: var(--color-secondary-dark);
    font-weight: var(--font-weight-semibold);
}

.expert-quote {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.expert-highlights {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
}

/* ========== About Brief ========== */
.section-about-brief {
    padding: var(--spacing-4xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text p {
    font-size: var(--font-size-lg);
    line-height: 1.9;
    color: var(--color-text-secondary);
}

.about-actions {
    margin-top: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
}

.about-image img {
    width: 100%;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--box-shadow-xl);
}

/* ========== Product Cards ========== */
.section-products {
    padding: var(--spacing-4xl) 0;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: 0 12px 24px rgba(37, 72, 56, 0.12);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 24px 50px rgba(32, 64, 44, 0.14);
}

.product-image {
    height: 220px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-body {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.product-body h3 {
    font-size: var(--font-size-xl);
    color: var(--color-text-heading);
}

.product-body p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.product-body .btn {
    align-self: flex-start;
}

/* ========== Solutions ========== */
.section-solutions {
    padding: var(--spacing-4xl) 0;
}

.solution-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: 0 16px 36px rgba(40, 80, 60, 0.12);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.solution-icon {
    font-size: 36px;
    width: 72px;
    height: 72px;
    border-radius: 24px;
    background: rgba(2, 136, 209, 0.12);
    color: var(--color-secondary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.solution-card p {
    color: var(--color-text-secondary);
}

/* ========== Honors ========== */
.section-honors {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(160deg, rgba(124, 179, 66, 0.08), rgba(2, 136, 209, 0.08));
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-2xl);
}

.honor-item {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: 0 18px 36px rgba(51, 73, 66, 0.12);
}

.honor-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-md);
}

.honor-item h4 {
    font-size: var(--font-size-lg);
    color: var(--color-text-heading);
    margin-bottom: var(--spacing-sm);
}

.honor-item p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========== News ========== */
.section-news {
    padding: var(--spacing-4xl) 0;
}

.news-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 16px 32px rgba(32, 64, 44, 0.12);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.news-date {
    color: var(--color-secondary-dark);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 2px;
    font-size: 12px;
}

.read-more {
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
}

/* ========== Cases ========== */
.section-cases {
    padding: var(--spacing-4xl) 0;
}

.case-card {
    position: relative;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: 0 22px 44px rgba(28, 56, 44, 0.18);
}

.case-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.case-card:hover img {
    transform: scale(1.08);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.65));
    color: var(--color-white);
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

.case-overlay h3 {
    font-size: var(--font-size-2xl);
}

.case-overlay p {
    color: rgba(255, 255, 255, 0.85);
}

.case-overlay .btn {
    align-self: flex-start;
}

/* ========== CTA ========== */
.section-cta {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(120deg, rgba(2, 136, 209, 0.12), rgba(124, 179, 66, 0.15));
}

.cta-content {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 24px 48px rgba(26, 64, 42, 0.18);
    padding: var(--spacing-3xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2xl);
}

.cta-actions {
    display: flex;
    gap: var(--spacing-lg);
}

/* ========== Helpers ========== */
.text-center {
    text-align: center;
}

.mt-xl {
    margin-top: var(--spacing-2xl);
}

/* ========== Responsive ========== */
@media (max-width: 1200px) {
    .data-grid,
    .comparison-grid,
    .experts-grid,
    .honors-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-overlay {
        margin: 80px 60px;
    }
}

@media (max-width: 992px) {
    .hero-innovation {
        height: auto;
        margin-top: var(--spacing-xl);
    }

    .hero-overlay {
        margin: var(--spacing-2xl);
    }

    .hero-control {
        top: auto;
        bottom: 24px;
        transform: none;
    }

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

    .cta-content {
        flex-direction: column;
        text-align: center;
    }

    .cta-actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .data-grid,
    .comparison-grid,
    .experts-grid,
    .honors-grid,
    .grid.grid-cols-4,
    .grid.grid-cols-3 {
        grid-template-columns: 1fr;
    }

    .hero-insights {
        gap: var(--spacing-lg);
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 576px) {
    .hero-overlay {
        margin: var(--spacing-xl);
        padding: var(--spacing-2xl);
    }

    .comparison-data {
        grid-template-columns: 1fr;
    }
}