/* ============================================
   Index Page CSS - Main Content Styles
   Zhongyou Heavy Industry - Salt Brick Machine
   ============================================ */

/* ============ Animations ============ */
@-webkit-keyframes zhongyou-fadeIn {
    from { opacity: 0; -webkit-transform: translateY(30px); transform: translateY(30px); }
    to { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}

@keyframes zhongyou-fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@-webkit-keyframes zhongyou-fadeInLeft {
    from { opacity: 0; -webkit-transform: translateX(-40px); transform: translateX(-40px); }
    to { opacity: 1; -webkit-transform: translateX(0); transform: translateX(0); }
}

@keyframes zhongyou-fadeInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}

@-webkit-keyframes zhongyou-fadeInRight {
    from { opacity: 0; -webkit-transform: translateX(40px); transform: translateX(40px); }
    to { opacity: 1; -webkit-transform: translateX(0); transform: translateX(0); }
}

@keyframes zhongyou-fadeInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@-webkit-keyframes zhongyou-scaleIn {
    from { opacity: 0; -webkit-transform: scale(0.85); transform: scale(0.85); }
    to { opacity: 1; -webkit-transform: scale(1); transform: scale(1); }
}

@keyframes zhongyou-scaleIn {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}

@-webkit-keyframes zhongyou-float {
    0%, 100% { -webkit-transform: translateY(0); transform: translateY(0); }
    50% { -webkit-transform: translateY(-10px); transform: translateY(-10px); }
}

@keyframes zhongyou-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Reveal Animation Class */
.zhongyou-reveal {
    opacity: 0;
    -webkit-transform: translateY(40px);
    transform: translateY(40px);
    -webkit-transition: opacity 0.8s ease-out, -webkit-transform 0.8s ease-out;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, -webkit-transform 0.8s ease-out;
}

.zhongyou-reveal.zhongyou-visible {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
}

.zhongyou-reveal-delay-1 { transition-delay: 0.1s; -webkit-transition-delay: 0.1s; }
.zhongyou-reveal-delay-2 { transition-delay: 0.2s; -webkit-transition-delay: 0.2s; }
.zhongyou-reveal-delay-3 { transition-delay: 0.3s; -webkit-transition-delay: 0.3s; }
.zhongyou-reveal-delay-4 { transition-delay: 0.4s; -webkit-transition-delay: 0.4s; }

/* ============ Section Base ============ */
.zhongyou-section {
    padding: var(--zhongyou-section-padding) 0;
    position: relative;
}

.zhongyou-section:nth-child(even) {
    background: var(--zhongyou-color-bg-light);
}

.zhongyou-section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.zhongyou-section-tag {
    display: inline-block;
    background: rgba(232, 97, 26, 0.1);
    color: var(--zhongyou-color-accent-dark);
    padding: 6px 16px;
    border-radius: var(--zhongyou-radius-full);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.zhongyou-section-title {
    font-size: 36px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 16px;
    font-weight: 700;
    line-height: 1.2;
}

.zhongyou-section-desc {
    color: var(--zhongyou-color-text-muted);
    font-size: 16px;
    line-height: 1.7;
}

/* ============ Hero Section ============ */
.zhongyou-hero {
    position: relative;
    min-height: calc(100vh - var(--zhongyou-header-height) - var(--zhongyou-topbar-height));
    min-height: -webkit-calc(100vh - var(--zhongyou-header-height) - var(--zhongyou-topbar-height));
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    overflow: hidden;
    padding: 100px 0;
}

.zhongyou-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
    -webkit-animation: zhongyou-hero-zoom 20s ease-in-out infinite alternate;
    animation: zhongyou-hero-zoom 20s ease-in-out infinite alternate;
}

@-webkit-keyframes zhongyou-hero-zoom {
    from { -webkit-transform: scale(1.05); transform: scale(1.05); }
    to { -webkit-transform: scale(1.15); transform: scale(1.15); }
}

@keyframes zhongyou-hero-zoom {
    from { transform: scale(1.05); }
    to { transform: scale(1.15); }
}

.zhongyou-hero-overlay {
    position: absolute;
    inset: 0;
    background: -webkit-linear-gradient(135deg, rgba(11, 29, 53, 0.92) 0%, rgba(22, 53, 96, 0.85) 50%, rgba(11, 29, 53, 0.9) 100%);
    background: linear-gradient(135deg, rgba(11, 29, 53, 0.92) 0%, rgba(22, 53, 96, 0.85) 50%, rgba(11, 29, 53, 0.9) 100%);
}

.zhongyou-hero-content {
    position: relative;
    z-index: 2;
    color: var(--zhongyou-color-white);
    max-width: 1200px;
    text-align: center;
    margin: 0 auto;
}

.zhongyou-hero-badge {
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 8px;
    background: rgba(232, 97, 26, 0.2);
    border: 1px solid rgba(232, 97, 26, 0.4);
    color: var(--zhongyou-color-accent-light);
    padding: 8px 16px;
    border-radius: var(--zhongyou-radius-full);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    -webkit-animation: zhongyou-fadeIn 0.8s ease-out;
    animation: zhongyou-fadeIn 0.8s ease-out;
}

.zhongyou-hero-title {
    font-size: 56px;
    color: var(--zhongyou-color-white);
    line-height: 1.15;
    margin-bottom: 24px;
    font-weight: 800;
    text-align: center;
    -webkit-animation: zhongyou-fadeIn 1s ease-out 0.2s both;
    animation: zhongyou-fadeIn 1s ease-out 0.2s both;
}

.zhongyou-text-accent {
    color: var(--zhongyou-color-accent);
    position: relative;
    display: inline-block;
}

.zhongyou-text-accent::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(232, 97, 26, 0.3);
    z-index: -1;
}

.zhongyou-hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    -webkit-animation: zhongyou-fadeIn 1s ease-out 0.4s both;
    animation: zhongyou-fadeIn 1s ease-out 0.4s both;
}

.zhongyou-hero-actions {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-animation: zhongyou-fadeIn 1s ease-out 0.6s both;
    animation: zhongyou-fadeIn 1s ease-out 0.6s both;
}

.zhongyou-hero-stats {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[4];
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    -webkit-animation: zhongyou-fadeIn 1s ease-out 0.8s both;
    animation: zhongyou-fadeIn 1s ease-out 0.8s both;
}

.zhongyou-stat-item {
    text-align: left;
}

.zhongyou-stat-number {
    font-family: var(--zhongyou-font-mono);
    font-size: 42px;
    font-weight: 700;
    color: var(--zhongyou-color-accent);
    line-height: 1;
    display: block;
    margin-bottom: 6px;
}

.zhongyou-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.zhongyou-hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    z-index: 2;
}

.zhongyou-hero-scroll a {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: color var(--zhongyou-transition);
}

.zhongyou-hero-scroll a:hover {
    color: var(--zhongyou-color-accent);
}

.zhongyou-hero-scroll i {
    -webkit-animation: zhongyou-bounce 2s infinite;
    animation: zhongyou-bounce 2s infinite;
}

@-webkit-keyframes zhongyou-bounce {
    0%, 100% { -webkit-transform: translateY(0); transform: translateY(0); }
    50% { -webkit-transform: translateY(8px); transform: translateY(8px); }
}

@keyframes zhongyou-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ============ Hero Slider（三图自动切换 / 纯图片无文字 / 自适应） ============ */
.zhongyou-hero--slider {
    display: block;
    min-height: 0;
    padding: 0;
}

/* 仅供屏幕阅读器/SEO 的标题，不在图片上显示文字 */
.zhongyou-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.zhongyou-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: var(--zhongyou-color-primary);
}

/* 16:9 等比占位：容器高度随宽度自适应，切换时不跳动 */
.zhongyou-slider::before {
    content: "";
    display: block;
    padding-top: 56.25%;
}

/* 底部渐变，让圆点/箭头在任何图片上都看得清 */
.zhongyou-slider::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 96px;
    z-index: 2;
    pointer-events: none;
    background: -webkit-gradient(linear, left bottom, left top, from(rgba(11, 29, 53, 0.45)), to(rgba(11, 29, 53, 0)));
    background: linear-gradient(to top, rgba(11, 29, 53, 0.45), rgba(11, 29, 53, 0));
}

.zhongyou-slide {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    opacity: 0;
    visibility: hidden;
    -webkit-transition: opacity 0.8s ease, visibility 0.8s ease;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.zhongyou-slide-active {
    opacity: 1;
    visibility: visible;
}

.zhongyou-slide img {
    display: block;
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
}

/* 左右切换按钮 */
.zhongyou-slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 54px;
    height: 54px;
    margin-top: -27px;
    padding: 0;
    border: 0;
    outline: none;
    cursor: pointer;
    border-radius: 50%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-size: 20px;
    line-height: 1;
    color: var(--zhongyou-color-white);
    background: rgba(11, 29, 53, 0.4);
    opacity: 0.75;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-slider-arrow--prev {
    left: 24px;
}

.zhongyou-slider-arrow--next {
    right: 24px;
}

.zhongyou-slider-arrow:hover {
    opacity: 1;
    background: var(--zhongyou-color-accent);
    -webkit-transform: scale(1.06);
    transform: scale(1.06);
}

/* 底部指示点 */
.zhongyou-slider-dots {
    position: absolute;
    bottom: 22px;
    left: 50%;
    z-index: 3;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 10px;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
}

.zhongyou-slider-dot {
    width: 11px;
    height: 11px;
    padding: 0;
    border: 0;
    outline: none;
    cursor: pointer;
    border-radius: var(--zhongyou-radius-full);
    background: rgba(255, 255, 255, 0.55);
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-slider-dot:hover {
    background: rgba(255, 255, 255, 0.85);
}

.zhongyou-slider-dot-active {
    width: 30px;
    background: var(--zhongyou-color-accent);
}

@media (prefers-reduced-motion: reduce) {
    .zhongyou-slide {
        -webkit-transition: none;
        transition: none;
    }
}

/* ============ About Section ============ */
.zhongyou-about-grid {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 1.2fr;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.zhongyou-about-image {
    position: relative;
    border-radius: var(--zhongyou-radius-lg);
    overflow: hidden;
    box-shadow: var(--zhongyou-shadow-xl);
}

.zhongyou-about-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 29, 53, 0.1) 0%, transparent 50%);
    z-index: 1;
}

.zhongyou-about-image img {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
    -webkit-transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow), -webkit-transform var(--zhongyou-transition-slow);
}

.zhongyou-about-image:hover img {
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
}

.zhongyou-about-experience {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: linear-gradient(135deg, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-dark) 100%);
    color: var(--zhongyou-color-white);
    padding: 20px 24px;
    border-radius: var(--zhongyou-radius-lg);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 12px;
    box-shadow: var(--zhongyou-shadow-xl);
    z-index: 2;
}

.zhongyou-exp-number {
    font-family: var(--zhongyou-font-mono);
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
}

.zhongyou-exp-text {
    font-size: 13px;
    line-height: 1.3;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.zhongyou-about-content h3 {
    font-size: 28px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 20px;
    line-height: 1.3;
}

.zhongyou-about-content p {
    color: var(--zhongyou-color-text-body);
    line-height: 1.8;
    margin-bottom: 16px;
}

.zhongyou-about-features {
    margin: 24px 0 32px;
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 1fr;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.zhongyou-about-features li {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 10px;
    color: var(--zhongyou-color-text-dark);
    font-size: 15px;
    font-weight: 500;
}

.zhongyou-about-features i {
    color: var(--zhongyou-color-accent);
    font-size: 18px;
}

.zhongyou-details-btn {
    background: var(--zhongyou-color-primary);
    background: linear-gradient(135deg, var(--zhongyou-color-primary) 0%, var(--zhongyou-color-primary-light) 100%);
    box-shadow: 0 4px 14px rgba(11, 29, 53, 0.3);
}

.zhongyou-details-btn:hover {
    box-shadow: 0 8px 24px rgba(11, 29, 53, 0.4);
}

/* ============ Highlights Section ============ */
.zhongyou-highlights-grid {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[3];
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.zhongyou-highlight-card {
    background: var(--zhongyou-color-white);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-lg);
    padding: 36px 28px;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    position: relative;
    overflow: hidden;
}

.zhongyou-highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-dark) 100%);
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transform-origin: left;
    transform-origin: left;
    -webkit-transition: -webkit-transform var(--zhongyou-transition);
    transition: -webkit-transform var(--zhongyou-transition);
    transition: transform var(--zhongyou-transition);
    transition: transform var(--zhongyou-transition), -webkit-transform var(--zhongyou-transition);
}

.zhongyou-highlight-card:hover {
    -webkit-transform: translateY(-8px);
    transform: translateY(-8px);
    box-shadow: var(--zhongyou-shadow-lg);
    border-color: transparent;
}

.zhongyou-highlight-card:hover::before {
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
}

.zhongyou-highlight-icon {
    width: 70px;
    height: 70px;
    border-radius: var(--zhongyou-radius-md);
    background: linear-gradient(135deg, rgba(232, 97, 26, 0.1) 0%, rgba(232, 97, 26, 0.2) 100%);
    color: var(--zhongyou-color-accent);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-highlight-card:hover .zhongyou-highlight-icon {
    background: linear-gradient(135deg, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-dark) 100%);
    color: var(--zhongyou-color-white);
    -webkit-transform: rotate(-5deg) scale(1.1);
    transform: rotate(-5deg) scale(1.1);
}

.zhongyou-highlight-card h3 {
    font-size: 20px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 12px;
    font-weight: 600;
}

.zhongyou-highlight-card p {
    color: var(--zhongyou-color-text-muted);
    line-height: 1.7;
    font-size: 14px;
}

/* ============ Products Section ============ */
.zhongyou-product-filter {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.zhongyou-filter-btn {
    padding: 10px 22px;
    background: var(--zhongyou-color-white);
    color: var(--zhongyou-color-text-body);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-full);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--zhongyou-transition);
}

.zhongyou-filter-btn:hover {
    border-color: var(--zhongyou-color-accent);
    color: var(--zhongyou-color-accent);
}

.zhongyou-filter-btn.active {
    background: linear-gradient(135deg, var(--zhongyou-color-primary) 0%, var(--zhongyou-color-primary-light) 100%);
    color: var(--zhongyou-color-white);
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(11, 29, 53, 0.3);
}

.zhongyou-products-grid {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[4];
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.zhongyou-product-card {
    background: var(--zhongyou-color-white);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-lg);
    overflow: hidden;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.zhongyou-product-card:hover {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
    box-shadow: var(--zhongyou-shadow-lg);
    border-color: transparent;
}

/* 图片自适应：宽度 100%、高度 auto，不再裁剪/拉伸，按图片原始比例展示 */
.zhongyou-product-image {
    position: relative;
    overflow: hidden;
    background: -webkit-linear-gradient(top, #f8fbff 0%, #edf2f9 100%);
    background: linear-gradient(180deg, #f8fbff 0%, #edf2f9 100%);
    border-bottom: 1px solid var(--zhongyou-color-border);
}

.zhongyou-product-image img {
    display: block;
    width: 100%;
    height: auto;
    -webkit-transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow), -webkit-transform var(--zhongyou-transition-slow);
}

.zhongyou-product-card:hover .zhongyou-product-image img {
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
}

.zhongyou-product-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 29, 53, 0.85) 0%, rgba(11, 29, 53, 0) 60%);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    opacity: 0;
    -webkit-transition: opacity var(--zhongyou-transition);
    transition: opacity var(--zhongyou-transition);
}

.zhongyou-product-card:hover .zhongyou-product-overlay {
    opacity: 1;
}

.zhongyou-product-overlay .zhongyou-btn {
    padding: 10px 20px;
    font-size: 12px;
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
    -webkit-transition: -webkit-transform var(--zhongyou-transition) 0.1s;
    transition: -webkit-transform var(--zhongyou-transition) 0.1s;
    transition: transform var(--zhongyou-transition) 0.1s;
    transition: transform var(--zhongyou-transition) 0.1s, -webkit-transform var(--zhongyou-transition) 0.1s;
}

.zhongyou-product-card:hover .zhongyou-product-overlay .zhongyou-btn {
    -webkit-transform: translateY(0);
    transform: translateY(0);
}

.zhongyou-product-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--zhongyou-color-accent);
    color: var(--zhongyou-color-white);
    padding: 4px 12px;
    border-radius: var(--zhongyou-radius-full);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(232, 97, 26, 0.4);
}

.zhongyou-product-badge.zhongyou-badge-hot {
    background: var(--zhongyou-color-danger);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
}

.zhongyou-product-badge.zhongyou-badge-new {
    background: var(--zhongyou-color-success);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}

.zhongyou-product-info {
    padding: 20px;
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.zhongyou-product-info h3 {
    font-size: 17px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 卡片底部操作区：Get a Quote（弹窗）+ View More（详情） */
.zhongyou-product-actions {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 10px;
    margin-top: auto; /* 让按钮组贴在卡片底部，标题行数不同也能对齐 */
}

.zhongyou-product-btn {
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    -ms-flex-preferred-size: 0;
    flex-basis: 0;
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 8px;
    border: 1px solid transparent;
    border-radius: var(--zhongyou-radius);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-product-btn i {
    font-size: 12px;
    -webkit-transition: -webkit-transform var(--zhongyou-transition);
    transition: transform var(--zhongyou-transition);
}

.zhongyou-product-btn--quote {
    background: var(--zhongyou-color-accent);
    border-color: var(--zhongyou-color-accent);
    color: var(--zhongyou-color-white);
}

.zhongyou-product-btn--quote:hover {
    background: var(--zhongyou-color-accent-dark);
    border-color: var(--zhongyou-color-accent-dark);
    -webkit-transform: translateY(-2px);
    transform: translateY(-2px);
    -webkit-box-shadow: 0 8px 18px rgba(232, 97, 26, 0.32);
    box-shadow: 0 8px 18px rgba(232, 97, 26, 0.32);
}

.zhongyou-product-btn--more {
    background: var(--zhongyou-color-white);
    border-color: var(--zhongyou-color-border);
    color: var(--zhongyou-color-primary);
}

.zhongyou-product-btn--more:hover {
    background: var(--zhongyou-color-primary);
    border-color: var(--zhongyou-color-primary);
    color: var(--zhongyou-color-white);
    -webkit-transform: translateY(-2px);
    transform: translateY(-2px);
    -webkit-box-shadow: 0 8px 18px rgba(11, 29, 53, 0.22);
    box-shadow: 0 8px 18px rgba(11, 29, 53, 0.22);
}

.zhongyou-product-btn--more:hover i {
    -webkit-transform: translateX(3px);
    transform: translateX(3px);
}

@media (max-width: 480px) {
    .zhongyou-product-btn {
        padding: 9px 6px;
        font-size: 12px;
        gap: 4px;
    }
}

.zhongyou-products-cta {
    text-align: center;
    margin-top: 40px;
}

.zhongyou-products-cta .zhongyou-btn {
    background: var(--zhongyou-color-white);
    color: var(--zhongyou-color-primary);
    border: 2px solid var(--zhongyou-color-primary);
}

.zhongyou-products-cta .zhongyou-btn:hover {
    background: var(--zhongyou-color-primary);
    color: var(--zhongyou-color-white);
}

/* ============ Technology Section ============ */
.zhongyou-tech-wrapper {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 1.5fr;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.zhongyou-tech-image {
    position: relative;
    border-radius: var(--zhongyou-radius-lg);
    overflow: hidden;
    box-shadow: var(--zhongyou-shadow-lg);
}

.zhongyou-tech-image img {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
}

.zhongyou-tech-table h3 {
    font-size: 24px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 8px;
}

.zhongyou-tech-table-sub {
    font-size: 14px;
    line-height: 1.6;
    color: var(--zhongyou-color-text-muted);
    margin-bottom: 22px;
}

/* 表格外层：移动端可横向滚动，圆角 + 柔和投影 */
.zhongyou-tech-table-scroll {
    margin-bottom: 0;
    border-radius: var(--zhongyou-radius-lg);
    -webkit-box-shadow: 0 10px 30px rgba(11, 29, 53, 0.1);
    box-shadow: 0 10px 30px rgba(11, 29, 53, 0.1);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.zhongyou-tech-table table {
    width: 100%;
    min-width: 660px;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--zhongyou-color-white);
}

/* 表头：品牌橙 #c4501a（与产品详情页参数表保持一致） */
.zhongyou-tech-table thead th {
    padding: 16px 18px;
    text-align: left;
    vertical-align: middle;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    white-space: nowrap;
    color: var(--zhongyou-color-white);
    background: #c4501a;
}

.zhongyou-tech-table thead th:first-child {
    border-top-left-radius: var(--zhongyou-radius-lg);
}

.zhongyou-tech-table thead th:last-child {
    border-top-right-radius: var(--zhongyou-radius-lg);
}

.zhongyou-tech-table tbody td {
    padding: 15px 18px;
    vertical-align: middle;
    font-size: 14px;
    line-height: 1.5;
    color: var(--zhongyou-color-text-body);
    background: var(--zhongyou-color-white);
    border-bottom: 1px solid var(--zhongyou-color-border);
    font-variant-numeric: tabular-nums;
    -webkit-transition: background var(--zhongyou-transition);
    transition: background var(--zhongyou-transition);
}

/* 斑马纹：偶数行淡蓝底 */
.zhongyou-tech-table tbody tr:nth-child(even) td {
    background: #f3f8fe;
}

.zhongyou-tech-table tbody tr:hover td {
    background: #e8f1fd;
}

.zhongyou-tech-table tbody tr:last-child td {
    border-bottom: none;
}

/* 第一列机型名：品牌橙 #c4501a 加粗（与表头同色） */
.zhongyou-tech-table tbody td:first-child {
    font-weight: 700;
    white-space: nowrap;
    color: #c4501a;
}

/* 表尾说明行 */
.zhongyou-tech-table tfoot td {
    padding: 15px 18px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--zhongyou-color-text-muted);
    background: #fafbfd;
    border-top: 1px solid var(--zhongyou-color-border);
    border-bottom-left-radius: var(--zhongyou-radius-lg);
    border-bottom-right-radius: var(--zhongyou-radius-lg);
}

.zhongyou-tech-table-note i {
    margin-right: 8px;
    color: #e8a33d;
}

/* ============ Process Section ============ */
.zhongyou-process-image {
    text-align: center;
    margin-bottom: 50px;
    background: var(--zhongyou-color-white);
    padding: 30px;
    border-radius: var(--zhongyou-radius-lg);
    box-shadow: var(--zhongyou-shadow-lg);
}

.zhongyou-process-image img {
    max-width: 100%;
    margin: 0 auto;
}

.zhongyou-process-steps {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[3];
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
}

.zhongyou-process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 16.66%;
    right: 16.66%;
    height: 2px;
    background: -webkit-linear-gradient(left, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-light) 50%, var(--zhongyou-color-accent) 100%);
    background: linear-gradient(to right, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-light) 50%, var(--zhongyou-color-accent) 100%);
    z-index: 0;
}

.zhongyou-process-step {
    text-align: center;
    position: relative;
    z-index: 1;
    background: var(--zhongyou-color-white);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-lg);
    padding: 30px 20px;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-process-step:hover {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
    box-shadow: var(--zhongyou-shadow-lg);
    border-color: var(--zhongyou-color-accent);
}

.zhongyou-step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--zhongyou-color-white);
    border: 2px solid var(--zhongyou-color-accent);
    color: var(--zhongyou-color-accent);
    font-family: var(--zhongyou-font-mono);
    font-size: 24px;
    font-weight: 700;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    margin: 0 auto 20px;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    box-shadow: 0 0 0 4px var(--zhongyou-color-white);
}

.zhongyou-process-step:hover .zhongyou-step-number {
    background: linear-gradient(135deg, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-dark) 100%);
    color: var(--zhongyou-color-white);
    -webkit-transform: scale(1.05) rotate(5deg);
    transform: scale(1.05) rotate(5deg);
}

.zhongyou-process-step h3 {
    font-size: 18px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 10px;
    font-weight: 600;
}

.zhongyou-process-step p {
    color: var(--zhongyou-color-text-muted);
    font-size: 14px;
    line-height: 1.6;
}

.zhongyou-process-cta {
    text-align: center;
    margin-top: 50px;
}

.zhongyou-process-cta .zhongyou-btn {
    background: var(--zhongyou-color-white);
    color: var(--zhongyou-color-primary);
    border: 2px solid var(--zhongyou-color-primary);
}

.zhongyou-process-cta .zhongyou-btn:hover {
    background: var(--zhongyou-color-primary);
    color: var(--zhongyou-color-white);
}

/* ============ Applications Section ============ */
.zhongyou-applications-grid {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[4];
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.zhongyou-app-card {
    background: var(--zhongyou-color-white);
    border-radius: var(--zhongyou-radius-lg);
    padding: 36px 24px;
    text-align: center;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    border: 1px solid var(--zhongyou-color-border);
    position: relative;
    overflow: hidden;
}

.zhongyou-app-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: linear-gradient(to top, rgba(232, 97, 26, 0.05) 0%, transparent 100%);
    -webkit-transition: height var(--zhongyou-transition);
    transition: height var(--zhongyou-transition);
}

.zhongyou-app-card:hover {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
    box-shadow: var(--zhongyou-shadow-lg);
    border-color: transparent;
}

.zhongyou-app-card:hover::after {
    height: 100%;
}

.zhongyou-app-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--zhongyou-color-primary) 0%, var(--zhongyou-color-primary-light) 100%);
    color: var(--zhongyou-color-white);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-size: 30px;
    margin: 0 auto 20px;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    position: relative;
    z-index: 1;
}

.zhongyou-app-card:hover .zhongyou-app-icon {
    background: linear-gradient(135deg, var(--zhongyou-color-accent) 0%, var(--zhongyou-color-accent-dark) 100%);
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
}

.zhongyou-app-card h3 {
    font-size: 19px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 10px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.zhongyou-app-card p {
    color: var(--zhongyou-color-text-muted);
    font-size: 14px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* ============ Cases Section ============ */
.zhongyou-case-wrapper {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 1fr;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    /* 左右等高：两列都拉伸到同一高度，避免图片独立撑高导致左右不协调 */
    -webkit-box-align: stretch;
    -ms-flex-align: stretch;
    align-items: stretch;
    background: var(--zhongyou-color-white);
    border-radius: var(--zhongyou-radius-lg);
    overflow: hidden;
    box-shadow: var(--zhongyou-shadow-lg);
}

.zhongyou-case-image {
    position: relative;
    height: 100%;
    min-height: 400px;
    overflow: hidden;
}

/* 图片绝对定位铺满左列：高度跟右列内容走，不反过来撑高整行 */
.zhongyou-case-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
    -o-object-position: center;
    object-position: center;
    -webkit-transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow), -webkit-transform var(--zhongyou-transition-slow);
}

.zhongyou-case-wrapper:hover .zhongyou-case-image img {
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
}

.zhongyou-case-content {
    padding: 40px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.zhongyou-case-tag {
    display: inline-block;
    background: rgba(232, 97, 26, 0.1);
    color: var(--zhongyou-color-accent-dark);
    padding: 6px 14px;
    border-radius: var(--zhongyou-radius-full);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.zhongyou-case-content h3 {
    font-size: 26px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.zhongyou-case-content p {
    color: var(--zhongyou-color-text-body);
    line-height: 1.8;
    margin-bottom: 24px;
    font-size: 15px;
}

.zhongyou-case-results {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[3];
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 28px;
    padding: 20px;
    background: var(--zhongyou-color-bg-light);
    border-radius: var(--zhongyou-radius);
}

.zhongyou-case-results li {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 10px;
}

.zhongyou-case-results i {
    color: var(--zhongyou-color-accent);
    font-size: 22px;
    flex-shrink: 0;
}

.zhongyou-case-results > li > div {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.zhongyou-result-number {
    font-family: var(--zhongyou-font-mono);
    font-size: 20px;
    font-weight: 700;
    color: var(--zhongyou-color-text-dark);
    line-height: 1;
    margin-bottom: 4px;
}

.zhongyou-result-label {
    font-size: 11px;
    color: var(--zhongyou-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============ Case Study：项目概况 / 交付范围 / 客户评价 ============ */
.zhongyou-case-meta {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 20px 1fr;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 20px;
    margin-bottom: 26px;
    padding: 20px 22px;
    background: var(--zhongyou-color-white);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius);
}

.zhongyou-case-meta li {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 3px;
}

.zhongyou-meta-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--zhongyou-color-accent);
}

.zhongyou-meta-value {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--zhongyou-color-text-dark);
}

/* 小节标题：橙色竖条 + 文字 */
.zhongyou-case-subtitle {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 15px;
    font-weight: 700;
    color: var(--zhongyou-color-text-dark);
}

.zhongyou-case-subtitle::before {
    content: "";
    width: 4px;
    height: 16px;
    border-radius: var(--zhongyou-radius-full);
    background: var(--zhongyou-color-accent);
}

.zhongyou-case-scope {
    display: -ms-grid;
    display: grid;
    gap: 10px;
    margin-bottom: 26px;
}

.zhongyou-case-scope li {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 10px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--zhongyou-color-text-body);
}

.zhongyou-case-scope i {
    margin-top: 4px;
    font-size: 12px;
    color: var(--zhongyou-color-accent);
}

/* 客户评价 */
.zhongyou-case-quote {
    position: relative;
    margin: 0 0 28px;
    padding: 18px 22px;
    background: rgba(232, 97, 26, 0.06);
    border-left: 3px solid var(--zhongyou-color-accent);
    border-radius: 0 var(--zhongyou-radius) var(--zhongyou-radius) 0;
}

.zhongyou-case-quote p {
    margin-bottom: 10px;
    font-size: 14px;
    font-style: italic;
    line-height: 1.7;
    color: var(--zhongyou-color-text-body);
}

.zhongyou-case-quote cite {
    display: block;
    font-size: 13px;
    font-style: normal;
    font-weight: 600;
    color: var(--zhongyou-color-text-dark);
}

.zhongyou-case-quote > i {
    position: absolute;
    top: 14px;
    right: 18px;
    font-size: 24px;
    color: rgba(232, 97, 26, 0.16);
}

/* ============ Contact Section ============ */
.zhongyou-contact-wrapper {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 1.2fr;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: start;
}

.zhongyou-contact-info h3 {
    font-size: 24px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 12px;
}

.zhongyou-contact-info > p {
    color: var(--zhongyou-color-text-muted);
    margin-bottom: 30px;
    line-height: 1.7;
}

.zhongyou-contact-list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.zhongyou-contact-list li {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 16px;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
}

.zhongyou-contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--zhongyou-radius-md);
    background: linear-gradient(135deg, var(--zhongyou-color-primary) 0%, var(--zhongyou-color-primary-light) 100%);
    color: var(--zhongyou-color-white);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.zhongyou-contact-label {
    display: block;
    font-size: 12px;
    color: var(--zhongyou-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.zhongyou-contact-list a,
.zhongyou-contact-list span:not(.zhongyou-contact-label) {
    color: var(--zhongyou-color-text-dark);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
}

.zhongyou-contact-list a:hover {
    color: var(--zhongyou-color-accent);
}

.zhongyou-qr-codes {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--zhongyou-color-border);
}

.zhongyou-qr-item {
    text-align: center;
}

.zhongyou-qr-item img {
    width: 100px;
    height: 100px;
    background: var(--zhongyou-color-white);
    padding: 8px;
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius);
    margin-bottom: 8px;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-qr-item:hover img {
    border-color: var(--zhongyou-color-accent);
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
}

.zhongyou-qr-item span {
    color: var(--zhongyou-color-text-muted);
    font-size: 13px;
    font-weight: 500;
}

/* Contact Form */
.zhongyou-contact-form {
    background: var(--zhongyou-color-white);
    padding: 36px;
    border-radius: var(--zhongyou-radius-lg);
    box-shadow: var(--zhongyou-shadow-lg);
    border: 1px solid var(--zhongyou-color-border);
}

.zhongyou-contact-form h3 {
    font-size: 24px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 24px;
}

.zhongyou-form-row {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 1fr;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.zhongyou-form-group {
    margin-bottom: 16px;
}

.zhongyou-form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.zhongyou-form-group input,
.zhongyou-form-group textarea,
.zhongyou-form-group select {
    width: 100%;
    padding: 12px 14px;
    background: var(--zhongyou-color-bg-light);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius);
    font-size: 14px;
    color: var(--zhongyou-color-text-dark);
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-form-group input:focus,
.zhongyou-form-group textarea:focus,
.zhongyou-form-group select:focus {
    outline: none;
    border-color: var(--zhongyou-color-accent);
    background: var(--zhongyou-color-white);
    box-shadow: 0 0 0 3px rgba(232, 97, 26, 0.15);
}

.zhongyou-form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.zhongyou-submit-btn {
    width: 100%;
    margin-top: 8px;
    padding: 14px 24px;
    font-size: 14px;
}

.zhongyou-form-note {
    text-align: center;
    color: var(--zhongyou-color-text-muted);
    font-size: 12px;
    margin-top: 16px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 6px;
}

.zhongyou-form-note i {
    color: var(--zhongyou-color-success);
}

/* ============ Responsive ============ */
@media (max-width: 1280px) {
    .zhongyou-hero-title {
        font-size: 48px;
    }

    .zhongyou-products-grid {
        -ms-grid-columns: (1fr)[3];
        grid-template-columns: repeat(3, 1fr);
    }

    .zhongyou-applications-grid {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .zhongyou-hero-title {
        font-size: 40px;
    }

    .zhongyou-hero-subtitle {
        font-size: 16px;
    }

    .zhongyou-hero-stats {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .zhongyou-stat-number {
        font-size: 36px;
    }

    .zhongyou-section-title {
        font-size: 30px;
    }

    .zhongyou-about-grid,
    .zhongyou-tech-wrapper,
    .zhongyou-case-wrapper,
    .zhongyou-contact-wrapper {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* 单列布局时，左图恢复自身比例（3200x4000），只裁不压 */
    .zhongyou-case-image {
        height: auto;
        min-height: 0;
        aspect-ratio: 4 / 5;
    }

    .zhongyou-highlights-grid,
    .zhongyou-process-steps {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    }

    .zhongyou-process-steps::before {
        display: none;
    }

    .zhongyou-products-grid {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    }

    .zhongyou-case-image {
        min-height: 300px;
    }

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

@media (max-width: 768px) {
    .zhongyou-hero {
        padding: 60px 0;
        min-height: auto;
    }

    .zhongyou-hero--slider {
        padding: 0;
        min-height: 0;
        display: block;
    }

    /* 手机端改为 4:3，banner 不会过矮 */
    .zhongyou-slider::before {
        padding-top: 75%;
    }

    .zhongyou-slider-arrow {
        width: 42px;
        height: 42px;
        margin-top: -21px;
        font-size: 16px;
        opacity: 1;
    }

    .zhongyou-slider-arrow--prev {
        left: 12px;
    }

    .zhongyou-slider-arrow--next {
        right: 12px;
    }

    .zhongyou-slider-dots {
        bottom: 14px;
    }

    .zhongyou-hero-title {
        font-size: 32px;
    }

    .zhongyou-hero-actions {
        gap: 12px;
    }

    .zhongyou-hero-actions .zhongyou-btn {
        width: 100%;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
    }

    .zhongyou-hero-stats {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    }

    .zhongyou-section-title {
        font-size: 26px;
    }

    .zhongyou-section-header {
        margin-bottom: 40px;
    }

    .zhongyou-highlights-grid,
    .zhongyou-process-steps,
    .zhongyou-products-grid,
    .zhongyou-applications-grid {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
    }

    .zhongyou-products-grid,
    .zhongyou-applications-grid {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    }

    .zhongyou-form-row {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
    }

    .zhongyou-case-content,
    .zhongyou-contact-form {
        padding: 24px;
    }

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

    .zhongyou-case-results {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .zhongyou-qr-codes {
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
    }
}

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

    .zhongyou-hero-stats {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
        text-align: center;
    }

    .zhongyou-stat-item {
        text-align: center;
    }

    .zhongyou-section-title {
        font-size: 22px;
    }

    .zhongyou-products-grid,
    .zhongyou-applications-grid {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
    }

    .zhongyou-about-experience {
        padding: 16px 20px;
    }

    .zhongyou-exp-number {
        font-size: 36px;
    }

    .zhongyou-tech-table-scroll table {
        min-width: 660px;
    }

    /* 案例区：项目概况改为单列，评价内边距收紧 */
    .zhongyou-case-meta {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
        padding: 16px;
    }

    .zhongyou-case-quote {
        padding: 16px;
    }

    .zhongyou-qr-codes {
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    }
}

/* ============ News / Blog Section ============ */
.zhongyou-news-filter {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.zhongyou-news-grid {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[3];
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.zhongyou-news-card {
    background: var(--zhongyou-color-white);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-lg);
    overflow: hidden;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.zhongyou-news-card:hover {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
    box-shadow: var(--zhongyou-shadow-lg);
    border-color: transparent;
}

.zhongyou-news-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--zhongyou-color-bg-light);
}

.zhongyou-news-card:hover .zhongyou-news-image img {
    -webkit-transform: scale(1.08);
    transform: scale(1.08);
}

.zhongyou-news-image img {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
    -webkit-transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: -webkit-transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow);
    transition: transform var(--zhongyou-transition-slow), -webkit-transform var(--zhongyou-transition-slow);
}

.zhongyou-news-category {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--zhongyou-color-primary);
    color: var(--zhongyou-color-white);
    padding: 5px 14px;
    border-radius: var(--zhongyou-radius-full);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 2;
}

.zhongyou-news-content {
    padding: 24px;
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.zhongyou-news-meta {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 14px;
    font-size: 12px;
    color: var(--zhongyou-color-text-muted);
}

.zhongyou-news-meta span {
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 5px;
}

.zhongyou-news-meta i {
    color: var(--zhongyou-color-accent);
}

.zhongyou-news-title {
    font-size: 18px;
    color: var(--zhongyou-color-text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
    font-weight: 600;
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    -webkit-transition: color var(--zhongyou-transition);
    transition: color var(--zhongyou-transition);
}

.zhongyou-news-card:hover .zhongyou-news-title {
    color: var(--zhongyou-color-accent);
}

.zhongyou-news-excerpt {
    color: var(--zhongyou-color-text-muted);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.zhongyou-news-readmore {
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 8px;
    color: var(--zhongyou-color-primary);
    font-size: 14px;
    font-weight: 600;
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
    align-self: flex-start;
}

.zhongyou-news-readmore:hover {
    color: var(--zhongyou-color-accent);
    gap: 12px;
}

.zhongyou-news-cta {
    text-align: center;
    margin-top: 40px;
}

.zhongyou-news-cta .zhongyou-btn {
    background: var(--zhongyou-color-white);
    color: var(--zhongyou-color-primary);
    border: 2px solid var(--zhongyou-color-primary);
}

.zhongyou-news-cta .zhongyou-btn:hover {
    background: var(--zhongyou-color-primary);
    color: var(--zhongyou-color-white);
}

/* News Responsive */
@media (max-width: 1024px) {
    .zhongyou-news-grid {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .zhongyou-news-grid {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
    }

    .zhongyou-news-title {
        font-size: 17px;
    }

    .zhongyou-news-meta {
        gap: 10px;
    }
}

/* ============ Stats Bar Section ============ */
.zhongyou-stats-bar {
    background: linear-gradient(135deg, var(--zhongyou-color-primary) 0%, var(--zhongyou-color-primary-light) 100%);
    color: var(--zhongyou-color-white);
    padding: 70px 0;
}

.zhongyou-stats-bar .zhongyou-stats-content {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1.2fr 1fr;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.zhongyou-stats-text .zhongyou-hero-badge {
    background: rgba(232, 97, 26, 0.2);
    border-color: rgba(232, 97, 26, 0.4);
    color: var(--zhongyou-color-accent-light);
}

.zhongyou-stats-title {
    font-size: 36px;
    color: var(--zhongyou-color-white);
    line-height: 1.2;
    margin-bottom: 20px;
    font-weight: 800;
}

.zhongyou-stats-title .zhongyou-text-accent {
    color: var(--zhongyou-color-accent);
}

.zhongyou-stats-title .zhongyou-text-accent::after {
    background: rgba(232, 97, 26, 0.3);
}

.zhongyou-stats-subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 28px;
    max-width: 560px;
}

.zhongyou-stats-bar .zhongyou-hero-actions {
    margin-bottom: 0;
}

.zhongyou-stats-outline {
    background: transparent !important;
    color: var(--zhongyou-color-white) !important;
    border-color: rgba(255, 255, 255, 0.6) !important;
}

.zhongyou-stats-outline:hover {
    background: var(--zhongyou-color-white) !important;
    color: var(--zhongyou-color-primary) !important;
    border-color: var(--zhongyou-color-white) !important;
}

.zhongyou-stats-bar .zhongyou-hero-stats {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: (1fr)[2];
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.zhongyou-stats-bar .zhongyou-stat-item {
    text-align: center;
    padding: 24px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--zhongyou-radius-lg);
    -webkit-transition: all var(--zhongyou-transition);
    transition: all var(--zhongyou-transition);
}

.zhongyou-stats-bar .zhongyou-stat-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--zhongyou-color-accent);
    -webkit-transform: translateY(-4px);
    transform: translateY(-4px);
}

.zhongyou-stats-bar .zhongyou-stat-number {
    color: var(--zhongyou-color-accent);
    font-size: 48px;
}

.zhongyou-stats-bar .zhongyou-stat-label {
    color: rgba(255, 255, 255, 0.7);
}

/* Stats Bar Responsive */
@media (max-width: 1024px) {
    .zhongyou-stats-bar .zhongyou-stats-content {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .zhongyou-stats-title {
        font-size: 30px;
    }
}

@media (max-width: 768px) {
    .zhongyou-stats-bar {
        padding: 50px 0;
    }

    .zhongyou-stats-bar .zhongyou-hero-stats {
        -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .zhongyou-stats-bar .zhongyou-stat-number {
        font-size: 36px;
    }

    .zhongyou-stats-title {
        font-size: 26px;
    }
}

/* ============ Trust Bar Section ============ */
.zhongyou-trust-bar {
    background: var(--zhongyou-color-white);
}

.zhongyou-trust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.zhongyou-trust-stat {
    text-align: center;
    padding: 30px 16px;
    background: var(--zhongyou-color-bg-light);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-lg);
    transition: all var(--zhongyou-transition);
}

.zhongyou-trust-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--zhongyou-shadow-md);
    border-color: var(--zhongyou-color-accent);
}

.zhongyou-trust-number {
    font-family: var(--zhongyou-font-mono);
    font-size: 48px;
    font-weight: 700;
    color: var(--zhongyou-color-accent);
    line-height: 1;
}

.zhongyou-trust-suffix {
    font-family: var(--zhongyou-font-mono);
    font-size: 28px;
    font-weight: 700;
    color: var(--zhongyou-color-accent);
}

.zhongyou-trust-label {
    display: block;
    font-size: 13px;
    color: var(--zhongyou-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 8px;
    line-height: 1.4;
}

.zhongyou-trust-badges {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.zhongyou-trust-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--zhongyou-color-bg-light);
    border-radius: var(--zhongyou-radius);
    border: 1px solid var(--zhongyou-color-border);
    transition: all var(--zhongyou-transition);
}

.zhongyou-trust-badge:hover {
    border-color: var(--zhongyou-color-accent);
    box-shadow: var(--zhongyou-shadow-sm);
}

.zhongyou-trust-badge i {
    color: var(--zhongyou-color-accent);
    font-size: 20px;
    flex-shrink: 0;
}

.zhongyou-trust-badge span {
    font-size: 14px;
    font-weight: 500;
    color: var(--zhongyou-color-text-dark);
}

/* Trust Bar Responsive */
@media (max-width: 1024px) {
    .zhongyou-trust-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .zhongyou-trust-badges {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .zhongyou-trust-number {
        font-size: 36px;
    }
    .zhongyou-trust-suffix {
        font-size: 22px;
    }
    .zhongyou-trust-badges {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .zhongyou-trust-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .zhongyou-trust-stat {
        padding: 20px 12px;
    }
    .zhongyou-trust-number {
        font-size: 30px;
    }
    .zhongyou-trust-suffix {
        font-size: 18px;
    }
    .zhongyou-trust-label {
        font-size: 11px;
    }
}

/* ============ FAQ Section ============ */
.zhongyou-faq {
    background: var(--zhongyou-color-bg-light);
}

.zhongyou-faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.zhongyou-faq-item {
    background: var(--zhongyou-color-white);
    border: 1px solid var(--zhongyou-color-border);
    border-radius: var(--zhongyou-radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all var(--zhongyou-transition);
}

.zhongyou-faq-item:hover {
    border-color: var(--zhongyou-color-accent);
    box-shadow: var(--zhongyou-shadow-sm);
}

.zhongyou-faq-item.zhongyou-faq-active {
    border-color: var(--zhongyou-color-accent);
    box-shadow: 0 0 0 1px var(--zhongyou-color-accent);
}

.zhongyou-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--zhongyou-color-text-dark);
    transition: all var(--zhongyou-transition);
}

.zhongyou-faq-question:hover {
    color: var(--zhongyou-color-primary);
}

.zhongyou-faq-question i {
    font-size: 14px;
    color: var(--zhongyou-color-accent);
    transition: transform var(--zhongyou-transition);
    flex-shrink: 0;
}

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

.zhongyou-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
}

.zhongyou-faq-item.zhongyou-faq-active .zhongyou-faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

.zhongyou-faq-answer p {
    color: var(--zhongyou-color-text-body);
    font-size: 15px;
    line-height: 1.8;
}

.zhongyou-faq-cta {
    text-align: center;
    margin-top: 40px;
}

.zhongyou-faq-cta p {
    color: var(--zhongyou-color-text-muted);
    font-size: 16px;
    margin-bottom: 16px;
}

/* FAQ Responsive */
@media (max-width: 768px) {
    .zhongyou-faq-question {
        font-size: 15px;
        padding: 16px 20px;
    }
    .zhongyou-faq-answer {
        padding: 0 20px;
    }
    .zhongyou-faq-item.zhongyou-faq-active .zhongyou-faq-answer {
        padding: 0 20px 16px;
    }
}