/* ============================================================
   densply.cn 前端设计大师增强样式 v1.0
   设计方向：工业精致风 - 深色质感 + 科技蓝 + 光效点缀
   核心记忆点：光影流动感 + 数据可视化卡片 + 沉浸式Hero
   ============================================================ */

/* ==================== 全局增强 ==================== */

/* 字体优化 - 加入更有性格的字体 */
body {
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* 标题字距优化 */
h1, h2, h3, h4 {
    letter-spacing: -0.02em;
}

.section-title {
    letter-spacing: -0.01em;
    font-weight: 800;
}

/* ==================== 导航栏增强 ==================== */
.header {
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 1px 0 rgba(0, 102, 204, 0.08), 0 4px 24px rgba(0, 0, 0, 0.04);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 1px 0 rgba(0, 102, 204, 0.12), 0 8px 32px rgba(0, 0, 0, 0.06);
}

.logo-text {
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: opacity 0.3s ease;
}

.nav-menu > li > a {
    position: relative;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-menu > li > a:hover::after,
.nav-menu > li.current-menu-item > a::after {
    width: 80%;
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 24px;
    padding: 8px 20px;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(0, 102, 204, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 102, 204, 0.35);
}

/* ==================== Hero轮播增强 ==================== */
.hero-carousel {
    position: relative;
}

.hero-carousel::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.4) 60%, var(--white));
    pointer-events: none;
    z-index: 2;
}

.carousel-slide {
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 30, 60, 0.55) 0%, rgba(0, 76, 153, 0.35) 50%, rgba(0, 102, 204, 0.2) 100%);
    z-index: 1;
}

.carousel-content {
    z-index: 3;
    animation: heroFadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-tag {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.15em;
    font-weight: 600;
    text-transform: uppercase;
}

.carousel-content h2 {
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.carousel-content p {
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
}

.carousel-stat .stat-num {
    text-shadow: 0 2px 16px rgba(0, 168, 120, 0.5);
    font-weight: 800;
}

/* Hero按钮增强 */
.btn-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    box-shadow: 0 4px 16px rgba(0, 102, 204, 0.3);
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.btn-hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-hero:hover::before {
    width: 300px;
    height: 300px;
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 102, 204, 0.4);
}

.btn-hero-outline {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-hero-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* 轮播箭头增强 */
.carousel-arrow {
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

/* 轮播圆点增强 */
.carousel-dot {
    transition: all 0.3s ease;
}

.carousel-dot.active {
    width: 32px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary));
}

/* ==================== 区段标题增强 ==================== */
.section-header {
    position: relative;
}

.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 3px;
}

.section-subtitle {
    letter-spacing: 0.01em;
}

/* ==================== 产品领域卡片增强 ==================== */
.product-domain-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.product-domain-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-domain-card:hover::before {
    transform: scaleX(1);
}

.product-domain-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 102, 204, 0.12);
    border-color: rgba(0, 102, 204, 0.1);
}

.product-domain-header {
    position: relative;
    transition: transform 0.4s ease;
}

.product-domain-card:hover .product-domain-header {
    transform: scale(1.08);
}

.product-domain-title {
    font-weight: 700;
    letter-spacing: 0.01em;
}

.product-domain-rate {
    background: linear-gradient(135deg, var(--secondary-bg) 0%, rgba(230, 247, 242, 0.5) 100%);
    border: 1px solid rgba(0, 168, 120, 0.15);
    font-weight: 600;
    transition: all 0.3s ease;
}

.product-domain-card:hover .product-domain-rate {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    border-color: transparent;
}

/* ==================== 技术优势卡片增强 ==================== */
.tech-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0) 0%, rgba(0, 102, 204, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.tech-card:hover::after {
    opacity: 1;
}

.tech-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0, 102, 204, 0.1);
}

.tech-icon-wrap {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-card:hover .tech-icon-wrap {
    transform: scale(1.1) rotate(2deg);
}

.tech-highlight {
    font-weight: 800;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== 案例卡片增强 ==================== */
.case-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

.case-image {
    overflow: hidden;
    position: relative;
}

.case-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 30, 60, 0.6) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.case-card:hover .case-image::after {
    opacity: 1;
}

.case-image img {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.case-rate {
    font-weight: 800;
    letter-spacing: 0.02em;
}

/* ==================== 服务承诺增强 ==================== */
.service-card,
.service-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.service-card:hover,
.service-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 102, 204, 0.08);
}

/* ==================== CTA区域增强 ==================== */
.cta-section {
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    z-index: 0;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

/* ==================== 页脚增强 ==================== */
.footer {
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.footer-social a {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-social a:hover {
    transform: translateY(-3px);
    color: var(--primary-light);
}

.footer-links a {
    transition: all 0.3s ease;
    position: relative;
}

.footer-links a:hover {
    padding-left: 6px;
}

/* ==================== 滚动渐入动画 ==================== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 交错动画延迟 */
.product-domain-card.reveal:nth-child(1) { transition-delay: 0s; }
.product-domain-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.product-domain-card.reveal:nth-child(3) { transition-delay: 0.2s; }
.product-domain-card.reveal:nth-child(4) { transition-delay: 0.3s; }

.tech-card.reveal:nth-child(1) { transition-delay: 0s; }
.tech-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.tech-card.reveal:nth-child(3) { transition-delay: 0.2s; }
.tech-card.reveal:nth-child(4) { transition-delay: 0.3s; }

/* ==================== 按钮通用增强 ==================== */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.btn:hover {
    transform: translateY(-1px);
}

/* ==================== 容器与间距微调 ==================== */
.container {
    max-width: 1200px;
}

.section {
    padding: 64px 0;
}

/* ==================== 产品详情页增强 ==================== */
.product-detail-table {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.product-detail-table th {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.product-detail-table tr:hover td {
    background: var(--primary-bg);
}

/* ==================== 面包屑增强 ==================== */
.breadcrumb {
    backdrop-filter: blur(4px);
    background: rgba(240, 240, 245, 0.8);
}

/* ==================== 移动端优化 ==================== */
@media (max-width: 768px) {
    .section {
        padding: 40px 0;
    }
    
    .carousel-content h2 {
        font-size: 1.5rem;
    }
    
    .carousel-content p {
        font-size: 0.9rem;
    }
    
    .hero-carousel::after {
        height: 60px;
    }
    
    .product-domain-card:hover,
    .tech-card:hover,
    .case-card:hover {
        transform: translateY(-3px);
    }
}

/* ==================== 滚动条美化 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
}

/* ==================== 选中文本美化 ==================== */
::selection {
    background: rgba(0, 102, 204, 0.15);
    color: var(--primary-dark);
}

/* ==================== 动画关键帧 ==================== */
@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes subtleGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 102, 204, 0.1);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 102, 204, 0.15);
    }
}

/* ==================== 页面头部增强 ==================== */
.page-header {
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to bottom, transparent, var(--white));
    pointer-events: none;
}

.page-tag {
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.1em;
}

.page-title {
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.02em;
}

/* ==================== 表单增强 ==================== */
input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
    transition: all 0.3s ease;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
    outline: none;
}

/* ==================== 分页增强 ==================== */
.pagination a,
.pagination span {
    transition: all 0.3s ease;
    border-radius: 6px;
}

.pagination a:hover {
    background: var(--primary-bg);
}