/* 恒达官网 - 简约蓝色系 */

:root {
    --primary: #1890ff;
    --primary-light: #40a9ff;
    --primary-dark: #096dd9;
    --text: #333;
    --text-muted: #666;
    --bg: #f5f7fa;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, 'PingFang SC', sans-serif; color: var(--text); background: var(--bg); }

/* Header - 透明覆盖轮播图 */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: 70px;
    background: transparent;
    box-shadow: none;
    transition: background 0.3s, box-shadow 0.3s;
}
.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo a { display: flex; align-items: center; text-decoration: none; gap: 12px; }
.logo img { height: 36px; width: auto; }
.logo-text {
    font-size: 17px;
    font-weight: 700;
    color: #1a1a1a;
    letter-spacing: 1.5px;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* Nav */
.main-nav ul { display: flex; gap: 44px; list-style: none; }
.nav-item { position: relative; }
.nav-link {
    display: block;
    padding: 24px 0;
    color: #1a1a1a;
    font-size: 15px;
    text-decoration: none;
    transition: color 0.2s;
    font-weight: 400;
}
.nav-link:hover { color: var(--primary); }
.arrow { font-size: 10px; margin-left: 6px; color: #64748b; display: inline-block; transition: transform 0.25s; vertical-align: middle; }
.has-dropdown:hover > .nav-link .arrow { transform: rotate(180deg); color: var(--primary); }

/* 下拉菜单 - 加宽三列布局 */
.mega-dropdown {
    position: fixed;
    top: 70px;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
    display: flex;
    gap: 0;
    min-width: 1400px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    border: 1px solid #eee;
    z-index: 1000;
}
.has-dropdown:hover .mega-dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

.mega-col { padding: 28px 0; }
.mega-col-products { flex: 3; border-right: 1px solid #f0f0f0; }
.mega-col-services { flex: 0 0 500px; border-left: 1px solid #f0f0f0; }

.mega-header {
    font-size: 14px;
    color: var(--primary);
    padding: 0 32px;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.mega-header::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

/* 产品区 - 三列网格 */
.mega-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.mega-services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; }

.mega-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 32px;
    text-decoration: none;
    transition: background 0.2s;
}
.mega-item:hover { background: linear-gradient(135deg, #e6f7ff, #f0f8ff); }

/* 蓝色系扁平图标 */
.mega-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1890ff 0%, #40a9ff 100%);
    border-radius: 10px;
    flex-shrink: 0;
}
.mega-icon svg {
    width: 22px;
    height: 22px;
    fill: #fff;
}

.mega-item-content { flex: 1; min-width: 0; }
.mega-item-main { display: flex; align-items: center; gap: 8px; }
.mega-name { font-size: 14px; color: var(--text); font-weight: 600; white-space: nowrap; }
.mega-tag {
    font-size: 10px;
    color: #fff;
    background: linear-gradient(135deg, #1890ff, #40a9ff);
    padding: 2px 8px;
    border-radius: 3px;
}
.mega-item-desc { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* 解决方案下拉 - mega样式 */
.mega-dropdown-solutions { min-width: 680px; }
.mega-grid-solutions { grid-template-columns: repeat(3, 1fr); }
.mega-item-solution { padding: 16px 20px; }
.mega-item-solution:hover { background: linear-gradient(135deg, #e6f7ff, #f0f8ff); }
.mega-icon-solution svg { width: 32px; height: 32px; }

/* 简单下拉 - 加宽 */
.simple-dropdown {
    position: absolute;
    top: 70px;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
    padding: 12px 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s;
    border: 1px solid #eee;
}
.has-dropdown:hover .simple-dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    font-size: 14px;
    color: var(--text);
    text-decoration: none;
    transition: background 0.2s;
}
.dropdown-link:hover { background: linear-gradient(135deg, #e6f7ff, #f0f8ff); color: var(--primary); }

/* 简单下拉图标 */
.dropdown-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1890ff 0%, #40a9ff 100%);
    border-radius: 8px;
    flex-shrink: 0;
}
.dropdown-icon svg {
    width: 18px;
    height: 18px;
    fill: #fff;
}

/* Header Actions */
.header-actions { display: flex; gap: 12px; align-items: center; }
.btn-login {
    color: #1a1a1a;
    font-size: 14px;
    padding: 8px 16px;
    text-decoration: none;
    transition: color 0.2s;
}
.btn-login:hover { color: var(--primary); }

.btn-register {
    background: var(--primary);
    color: #fff;
    padding: 8px 22px;
    font-size: 14px;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s;
}
.btn-register:hover { background: var(--primary-dark); }

/* ===== Hero Banner Carousel ===== */
/* ============================================
   Hero Carousel - 3D Glassmorphism
   玻璃拟态 · 3D 层次 · 柔和渐变
   ============================================ */
.hero-carousel {
    position: relative;
    height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, #e8f0f8, #d1ecf5);
}

.carousel-slides {
    position: relative;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.9s ease;
    pointer-events: none;
}
.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
}

/* 柔和渐变背景 */
.slide-bg {
    position: absolute;
    inset: 0;
    transition: transform 10s ease-out;
}
.carousel-slide.active .slide-bg {
    transform: scale(1.03);
}

/* ============================================
   3D 阶梯玻璃装饰板
   ============================================ */
.glass-panels {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.glass-panel {
    position: absolute;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.5),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
    opacity: 0;
}
.carousel-slide.active .glass-panel { opacity: 1; }

.panel-1 {
    width: 280px; height: 200px;
    right: 5%; top: 10%;
    transform: translateX(40px) rotate(-3deg);
    transition-delay: 0.1s;
}
.carousel-slide.active .panel-1 { transform: translateX(0) rotate(-3deg); }

.panel-2 {
    width: 200px; height: 150px;
    right: 15%; bottom: 15%;
    transform: translateX(60px) rotate(5deg);
    transition-delay: 0.2s;
}
.carousel-slide.active .panel-2 { transform: translateX(0) rotate(5deg); }

.panel-3 {
    width: 160px; height: 120px;
    left: 8%; top: 20%;
    transform: translateX(-40px) rotate(2deg);
    transition-delay: 0.3s;
}
.carousel-slide.active .panel-3 { transform: translateX(0) rotate(2deg); }

/* ============================================
   3D 大图标玻璃容器
   ============================================ */
.slide-decor {
    position: absolute;
    right: 6%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}
.icon-glass {
    width: 200px;
    height: 200px;
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow:
        0 16px 48px rgba(0, 0, 0, 0.08),
        0 4px 12px rgba(0, 0, 0, 0.04),
        inset 0 2px 0 rgba(255, 255, 255, 0.6),
        inset 0 -2px 8px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: iconFloat 6s ease-in-out infinite, iconAppear 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
    transform: perspective(800px) rotateY(-5deg) rotateX(3deg);
}
@keyframes iconFloat {
    0%, 100% { transform: perspective(800px) rotateY(-5deg) rotateX(3deg) translateY(0); }
    50% { transform: perspective(800px) rotateY(5deg) rotateX(-3deg) translateY(-12px); }
}
@keyframes iconAppear {
    from { opacity: 0; transform: perspective(800px) rotateY(-15deg) scale(0.8); }
    to { opacity: 1; transform: perspective(800px) rotateY(-5deg) rotateX(3deg); }
}
.slide-icon {
    font-size: 80px;
    line-height: 1;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.1));
}

/* ============================================
   毛玻璃内容卡片
   ============================================ */
.carousel-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    padding: 0 60px;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
}

.glass-card {
    position: relative;
    background: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-radius: 20px;
    padding: 44px 48px;
    max-width: 560px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.06),
        0 2px 8px rgba(0, 0, 0, 0.03),
        inset 0 2px 0 rgba(255, 255, 255, 0.6),
        inset 0 -1px 0 rgba(0, 0, 0, 0.03);
    animation: cardAppear 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: 0.15s;
}
@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 顶部高光边 */
.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}
.card-icon {
    font-size: 36px;
    line-height: 1;
}
.card-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, rgba(0,0,0,0.15), transparent);
}

.glass-card h1 {
    font-size: 32px;
    font-weight: 800;
    color: #1a2a3a;
    margin: 0 0 12px 0;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

.glass-card p {
    font-size: 15px;
    color: #4a5a6a;
    margin: 0 0 28px 0;
    line-height: 1.7;
}

.btn-carousel {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(59,130,246,0.9), rgba(37,99,235,0.95));
    color: #fff;
    padding: 13px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 14px;
    text-decoration: none;
    border: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 16px rgba(59,130,246,0.25);
}
.btn-carousel:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(59,130,246,0.35);
}
.btn-arrow {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}
.btn-carousel:hover .btn-arrow {
    transform: translateX(4px);
}

/* ============================================
   指示器
   ============================================ */
.carousel-controls {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 10;
}
.carousel-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #4a5a6a;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.5);
    color: #1a2a3a;
}
.carousel-dots {
    display: flex;
    gap: 6px;
}
.carousel-dot {
    width: 20px;
    height: 3px;
    border-radius: 2px;
    background: rgba(26, 42, 58, 0.2);
    cursor: pointer;
    transition: all 0.4s ease;
}
.carousel-dot:hover {
    background: rgba(26, 42, 58, 0.35);
}
.carousel-dot.active {
    width: 32px;
    background: rgba(26, 42, 58, 0.5);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
    .icon-glass { width: 160px; height: 160px; border-radius: 24px; }
    .slide-icon { font-size: 64px; }
    .glass-card { padding: 36px 40px; }
    .glass-card h1 { font-size: 28px; }
    .panel-1 { width: 200px; height: 150px; }
    .panel-2 { width: 150px; height: 110px; }
    .panel-3 { width: 120px; height: 90px; }
}

@media (max-width: 768px) {
    .hero-carousel { height: 540px; }
    .slide-decor { right: -10%; opacity: 0.5; }
    .icon-glass { width: 130px; height: 130px; border-radius: 20px; }
    .slide-icon { font-size: 50px; }
    .carousel-content { padding: 0 20px; }
    .glass-card {
        padding: 28px 22px;
        border-radius: 16px;
        backdrop-filter: blur(16px) saturate(150%);
        -webkit-backdrop-filter: blur(16px) saturate(150%);
        max-width: 100%;
    }
    .glass-card h1 { font-size: 22px; }
    .glass-card p { font-size: 13px; margin-bottom: 20px; }
    .card-icon { font-size: 28px; }
    .btn-carousel { padding: 11px 22px; font-size: 13px; border-radius: 10px; }
    .glass-panels { display: none; }
    .carousel-controls { bottom: 18px; gap: 12px; }
    .carousel-btn { width: 34px; height: 34px; font-size: 14px; border-radius: 8px; }
    .carousel-dot { width: 16px; height: 2px; }
    .carousel-dot.active { width: 24px; }
}

@media (max-width: 480px) {
    .hero-carousel { height: 480px; }
    .slide-decor { display: none; }
    .glass-card { padding: 24px 18px; }
    .glass-card h1 { font-size: 20px; }
}

/* Section */
.section { padding: 60px 30px; }
.section-title { font-size: 28px; font-weight: 700; text-align: center; margin-bottom: 12px; }
.section-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 400;
}

/* 产品卡片 - 简洁 */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto; }
.product-card {
    background: #fff;
    padding: 28px 24px;
    border-radius: 10px;
    border: 1px solid #eee;
    transition: all 0.25s;
    text-align: center;
}
.product-card:hover { border-color: var(--primary); box-shadow: 0 8px 24px rgba(24,144,255,0.12); transform: translateY(-4px); }
.product-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: transform 0.25s;
}
.product-card:hover .product-icon {
    transform: scale(1.1);
}
.product-icon svg {
    width: 64px;
    height: 64px;
}
.product-card h5 { font-size: 16px; margin-bottom: 8px; }
.product-card .desc { color: var(--text-muted); font-size: 13px; line-height: 1.5; }
.product-card .btn-link {
    display: inline-block;
    color: var(--primary);
    font-size: 13px;
    margin-top: 12px;
}

/* ===== 完善的服务能力 ===== */
.service-capabilities {
    background: #fff;
    padding: 80px 30px;
}

.service-grid {
    display: none !important;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: #f8f9fc;
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
}
.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    background: #fff;
}

.service-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}
.service-card:hover .service-icon {
    transform: scale(1.15) rotate(-5deg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
.service-emoji {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.service-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
    transition: color 0.3s ease;
}

.service-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}
.service-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    font-size: 14px;
    color: var(--text-muted);
    transition: all 0.2s ease;
    position: relative;
    padding-left: 20px;
}
.service-list li:last-child {
    border-bottom: none;
}
.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    transition: all 0.2s ease;
}
.service-card:hover .service-list li {
    color: var(--text);
}
.service-card:hover .service-list li::before {
    background: var(--primary);
    transform: translateY(-50%) scale(1.3);
}
.service-list li:hover {
    padding-left: 24px;
    color: var(--primary);
}

@media (max-width: 768px) {
    .service-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .service-card { padding: 28px 20px; }
}

/* ===== 行业解决方案 ===== */
.industry-solutions {
    background: linear-gradient(180deg, #f8f9fc 0%, #fff 100%);
    padding: 80px 30px;
}

/* Industry Tabs */
.industry-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}
.industry-tab {
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    background: #fff;
    border: 2px solid #e8e8e8;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}
.industry-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #e6f7ff;
}
.industry-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(24, 144, 255, 0.3);
}

/* Industry Panels */
.industry-panel {
    display: none;
    animation: fadeSlideIn 0.4s ease;
}
.industry-panel.active { display: block; }

@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.industry-content {
    max-width: 1100px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
    display: flex;
    min-height: 280px;
}

.industry-info {
    flex: 1;
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.industry-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
}
.industry-info p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}
.btn-industry {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-industry:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

.industry-stats {
    flex: 1;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    color: #fff;
}
.case-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}
.case-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-4px);
}
.case-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}
.case-item p {
    font-size: 13px;
    opacity: 0.85;
    line-height: 1.6;
}
.stat-placeholder {
    text-align: center;
    padding: 40px 20px;
}
.stat-placeholder .stat-icon { font-size: 3rem; margin-bottom: 12px; }
.stat-placeholder .stat-text { font-size: 14px; opacity: 0.8; }

@media (max-width: 768px) {
    .industry-content { flex-direction: column; }
    .industry-info { padding: 32px; }
    .industry-stats { padding: 32px; }
    .industry-tab { padding: 10px 20px; font-size: 14px; }
}

/* 案例 */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto; }
.case-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #eee;
}
.case-img { height: 140px; background: #e6f7ff; display: flex; align-items: center; justify-content: center; color: var(--primary); }
.case-card h5 { padding: 16px; font-size: 15px; }
.case-card p { padding: 0 16px 16px; color: var(--text-muted); font-size: 13px; }

/* ===== 众多品牌的一致认可 ===== */
.brand-cases {
    background: #fff;
    padding: 80px 30px;
}

.brand-carousel {
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
}

.brand-slides {
    position: relative;
    height: 360px;
    overflow: hidden;
    border-radius: 16px;
    background: linear-gradient(135deg, #e6f7ff 0%, #f0f8ff 50%, #e6f7ff 100%);
    border: 1px solid #e0e0e0;
}

.brand-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(40px);
}
.brand-slide.active {
    opacity: 1;
    transform: translateX(0);
}

.brand-slide-inner {
    display: flex;
    height: 100%;
    color: var(--text);
}

.brand-info {
    flex: 1;
    padding: 60px 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.brand-info h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}
.brand-info p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 480px;
}

.brand-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}
.brand-stat {
    display: flex;
    flex-direction: column;
}
.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.stat-value {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-divider {
    width: 1px;
    height: 44px;
    background: #e0e0e0;
}

.brand-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.brand-visual::before {
    content: '';
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(24, 144, 255, 0.08), rgba(64, 169, 255, 0.05));
    animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.15); opacity: 1; }
}
/* WOS Section */
.wos-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}
.wos-feature {
    text-align: center;
    padding: 32px 20px;
    background: #f8f9fc;
    border-radius: 16px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}
.wos-feature.visible {
    opacity: 1;
    transform: translateY(0);
}
.wos-feature:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}
.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    transition: transform 0.3s ease;
}
.wos-feature:hover .feature-icon {
    transform: scale(1.2) rotate(-5deg);
}
.wos-feature h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

/* RD Section */
.rd-section {
    background: linear-gradient(135deg, #1890ff, #096dd9);
    padding: 80px 30px;
}
.rd-section .section-title { color: #fff !important; }
.rd-section .section-subtitle { color: rgba(255,255,255,0.8) !important; }
.rd-stats {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.rd-stat {
    text-align: center;
    padding: 28px 16px;
    background: rgba(255,255,255,0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}
.rd-stat.visible {
    opacity: 1;
    transform: translateY(0);
}
.rd-stat:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-5px);
}
.rd-stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}
.rd-stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}

@media (max-width: 768px) {
    .wos-features { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .rd-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}

.brand-visual-placeholder {
    width: 160px;
    height: 160px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 700;
    color: #fff;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(24, 144, 255, 0.2);
}

/* Carousel Controls */
.brand-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 32px;
}
.brand-nav-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #e0e0e0;
    background: #fff;
    font-size: 20px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.brand-nav-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #e6f7ff;
}
.brand-dots {
    display: flex;
    gap: 8px;
}
.brand-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
}
.brand-dot.active {
    width: 24px;
    border-radius: 4px;
    background: var(--primary);
}

@media (max-width: 768px) {
    .brand-slide-inner { flex-direction: column; }
    .brand-info { padding: 32px 24px; }
    .brand-visual { display: none; }
    .brand-slides { height: auto; min-height: 280px; }
    .brand-slide { position: relative; }
    .brand-info h3 { font-size: 22px; }
    .stat-value { font-size: 24px; }
}

/* 资质 */
.cert-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; max-width: 1000px; margin: 0 auto; }
.cert-item { background: #fff; padding: 20px; text-align: center; border-radius: 8px; border: 1px solid #eee; }
.cert-item .icon { font-size: 32px; margin-bottom: 8px; }

/* 新闻 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto; }
.news-item { background: #fff; padding: 20px; border-radius: 8px; border-left: 3px solid var(--primary); }
.news-item h6 { font-size: 15px; margin-bottom: 8px; }
.news-item p { color: var(--text-muted); font-size: 13px; }

/* CTA Banner */
.cta-banner {
    width: 100%; height: 320px;
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 50%, #0050b3 100%);
    position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}
.cta-banner::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(64,169,255,0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(24,144,255,0.2) 0%, transparent 50%);
}
.cta-content {
    text-align: center; position: relative; z-index: 1; color: #fff;
}
.cta-content h2 {
    font-size: 3rem; font-weight: 800; margin-bottom: 12px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.cta-content p {
    font-size: 1.1rem; opacity: 0.9; margin-bottom: 24px;
}
.cta-btn {
    display: inline-block; background: #fff; color: #1890ff;
    padding: 14px 48px; font-size: 1.1rem; font-weight: 700;
    border-radius: 30px; text-decoration: none;
    transition: all 0.3s ease;
}
.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.3);
}

/* Footer */
.footer { background: #222; color: #fff; padding: 40px 30px 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; max-width: 1200px; margin: 0 auto; }
.footer h5 { font-size: 14px; margin-bottom: 16px; }
.footer a { color: #999; font-size: 13px; text-decoration: none; display: block; margin-bottom: 8px; }
.footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #333; padding-top: 20px; margin-top: 30px; text-align: center; color: #666; font-size: 12px; }

/* 响应式 */
@media (max-width: 768px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .industry-grid { grid-template-columns: repeat(3, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .mega-dropdown { min-width: 100vw; left: -30px; flex-direction: column; }
    .mega-col-products { border-right: none; border-bottom: 1px solid #eee; }
    .mega-grid { grid-template-columns: 1fr; }
    .simple-dropdown { min-width: 180px; }
}
/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: #f5f7fa;
}
.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 0 30px;
}
.contact-left h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: #333;
    margin-bottom: 12px;
}
.contact-subtitle {
    font-size: 1rem;
    color: #888;
    margin-bottom: 32px;
}
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}
.contact-icon {
    width: 48px;
    height: 48px;
    background: #e6f7ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}
.contact-label {
    display: block;
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 2px;
}
.contact-value {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
}
.contact-right {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: 20px;
    padding: 60px 40px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}
.contact-btn {
    display: inline-block;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    padding: 16px 56px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
}
.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(24,144,255,0.3);
}
.contact-hint {
    margin-top: 16px;
    font-size: 0.9rem;
    color: #888;
}

@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .contact-left h2 {
        font-size: 1.8rem;
    }
}

/* ===== 修复 fixed header 遮挡锚点内容 ===== */
html {
    scroll-padding-top: 80px;
}

/* 所有带id的元素锚点定位时留出header空间 */
[id] {
    scroll-margin-top: 80px;
}

/* ===== 产品页 Bootstrap 覆盖修复 ===== */
/* 让导航栏样式在加载了 Bootstrap 的页面上保持一致 */
.main-nav .nav-link {
    display: block !important;
    padding: 24px 0 !important;
    color: #1a1a1a !important;
    font-size: 15px !important;
    text-decoration: none !important;
    font-weight: 400 !important;
    transition: color 0.2s !important;
    background: 0 0 !important;
    border: 0 !important;
}
.main-nav .nav-link:hover {
    color: var(--primary) !important;
}
.main-nav ul {
    display: flex !important;
    gap: 44px !important;
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
}
.main-nav .nav-item {
    position: relative !important;
    list-style: none !important;
}


/* ===== 行业解决方案 - 微盟风格 ===== */
.industry-solutions-weimob {
    background: #f8f9fc;
    padding: 80px 30px;
}
.industry-tabs-weimob {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 40px;
}
.industry-tab-weimob {
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    color: #808082;
    background: #fff;
    border: 1px solid #f0f3fa;
    cursor: pointer;
    transition: all 0.3s ease;
}
.industry-tab-weimob:hover {
    color: #002147;
    border-color: #002147;
}
.industry-tab-weimob.active {
    color: #002147;
    border-color: #002147;
    box-shadow: 0 2px 8px rgba(0,33,71,0.08);
}
.industry-cases-container {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}
.industry-cases-slider {
    display: flex;
    gap: 16px;
    flex: 1;
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.industry-cases-slider::-webkit-scrollbar {
    display: none;
}
.industry-case-card {
    min-width: 380px;
    max-width: 380px;
    background: #fff;
    border-radius: 4px;
    padding: 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border: 1px solid #f0f3fa;
    transition: all 0.3s ease;
    scroll-snap-align: start;
    flex-shrink: 0;
}
.industry-case-card:hover {
    box-shadow: 0 8px 24px rgba(0,33,71,0.12);
    border-color: #002147;
}
.case-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.case-card-header h4 {
    font-size: 18px;
    font-weight: 700;
    color: #333;
    margin: 0;
}
.case-detail-link {
    color: #002147;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
    white-space: nowrap;
}
.case-detail-link:hover {
    color: #1890ff;
}
.case-card-desc {
    font-size: 14px;
    color: #808082;
    line-height: 1.8;
    margin-bottom: 24px;
}
.case-card-stats {
    display: flex;
    gap: 12px;
}
.case-stat-item {
    flex: 1;
    background: #f8f9fc;
    border-radius: 4px;
    padding: 12px;
    text-align: center;
}
.stat-label {
    font-size: 12px;
    color: #999;
    margin-bottom: 6px;
}
.stat-value {
    font-size: 20px;
    font-weight: 800;
    color: #002147;
}
.case-nav-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid #e0e0e0;
    font-size: 24px;
    color: #666;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    flex-shrink: 0;
}
.case-nav-btn:hover {
    background: #002147;
    border-color: #002147;
    color: #fff;
}
.case-pagination {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #999;
}
.page-current {
    font-weight: 700;
    color: #333;
}
.industry-panel-weimob {
    display: none;
}
.industry-panel-weimob.active {
    display: block;
    animation: fadeSlideIn 0.4s ease;
}
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 768px) {
    .industry-case-card { min-width: 300px; max-width: 300px; padding: 24px; }
    .industry-tabs-weimob { gap: 6px; }
    .industry-tab-weimob { padding: 8px 16px; font-size: 13px; }
    .case-nav-btn { width: 36px; height: 36px; font-size: 20px; }
}

/* ===== Industry Features Grid ===== */
.industry-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}
.industry-feature-item {
    background: #fff;
    border-radius: 8px;
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border: 1px solid #f0f3fa;
    text-align: center;
    transition: all 0.3s ease;
}
.industry-feature-item:hover {
    box-shadow: 0 8px 24px rgba(0,33,71,0.12);
    border-color: #002147;
    transform: translateY(-4px);
}
.feature-item-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}
.feature-item-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #002147;
    margin-bottom: 8px;
}
.feature-item-desc {
    font-size: 0.85rem;
    color: #808082;
    line-height: 1.6;
}
@media (max-width: 768px) {
    .industry-features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .industry-feature-item { padding: 20px 16px; }
    .feature-item-icon { font-size: 2rem; }
    .feature-item-title { font-size: 0.95rem; }
    .feature-item-desc { font-size: 0.8rem; }
}

/* ===== 移动端全面优化 ===== */

/* ============================================
   手机端全面响应式优化
   ============================================ */
.menu-toggle { display: none; }
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(15,23,42,0.42); z-index: 9998; backdrop-filter: blur(2px); }
.mobile-nav { position: fixed; top: 0; right: -84vw; width: 84vw; max-width: 360px; height: 100vh; background: linear-gradient(180deg,#fff 0%,#f8fbff 100%); z-index: 9999; overflow-y: auto; box-shadow: -20px 0 40px rgba(15,23,42,0.16); transition: right 0.28s ease; border-top-left-radius: 22px; border-bottom-left-radius: 22px; border-left: 1px solid #eef2f7; }
.mobile-nav-header { display: flex; justify-content: space-between; align-items: center; padding: 18px 18px 14px; border-bottom: 1px solid #eef2f7; background: linear-gradient(180deg,#fff,#f7f9fc); border-top-left-radius: 22px; }
.mobile-nav-header span { font-size: 16px; font-weight: 800; color: #0f172a; }
.mobile-nav-close { width: 32px; height: 32px; border: none; background: #f1f5f9; border-radius: 50%; font-size: 16px; color: #64748b; cursor: pointer; }
.mobile-nav-body { padding: 8px 0 14px; }
.mobile-nav-group { border-bottom: 1px solid #eef2f7; }
.mobile-nav-group-title { padding: 14px 18px 10px; font-size: 12px; font-weight: 800; color: #94a3b8; letter-spacing: .08em; text-transform: uppercase; }
.mobile-nav-link { display: block; padding: 14px 18px; font-size: 15px; color: #0f172a; text-decoration: none; border-left: 3px solid transparent; border-radius: 0 14px 14px 0; margin: 0 10px; }
.mobile-nav-link-single { border-bottom: 1px solid #eef2f7; }
.mobile-nav-btns { padding: 16px 14px 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mobile-nav-btn { padding: 12px 10px; text-align: center; border-radius: 12px; font-size: 13px; font-weight: 700; text-decoration: none; }
.mobile-nav-btn-login { background: #eff6ff; color: #1d4ed8; }
.mobile-nav-btn-reg { background: linear-gradient(135deg,#1890ff,#2b7fff); color: #fff; }
@media (max-width: 768px) {
    /* === Header & Navigation === */
    .header { height: 50px; background: rgba(255,255,255,.92); backdrop-filter: blur(18px); box-shadow: 0 4px 18px rgba(15,23,42,0.06); }
    .header-inner { height: 50px; padding: 0 12px; }
    .logo { display: flex; align-items: center; gap: 8px; min-width: 0; }
    .logo img { height: 32px; }
    .logo-text { font-size: 14px; letter-spacing: .5px; white-space: nowrap; }
    .main-nav { display: none !important; }
    .header-actions { display: none; }

    /* 汉堡菜单按钮 */
    .menu-toggle { display: block;
        width: 36px;
        height: 36px;
        border: none;
        background: rgba(255,255,255,.72);
        border-radius: 10px;
        cursor: pointer;
        padding: 0;
        position: relative;
        box-shadow: 0 1px 8px rgba(15,23,42,.08);
    }
    .menu-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: #333;
        border-radius: 2px;
        transition: all 0.3s;
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }
    .menu-toggle span:nth-child(1) { top: 10px; }
    .menu-toggle span:nth-child(2) { top: 17px; }
    .menu-toggle span:nth-child(3) { top: 24px; }
    .menu-toggle.open span:nth-child(1) { top: 17px; transform: translateX(-50%) rotate(45deg); }
    .menu-toggle.open span:nth-child(2) { opacity: 0; }
    .menu-toggle.open span:nth-child(3) { top: 17px; transform: translateX(-50%) rotate(-45deg); }

    /* 手机端导航抽屉 */
    .mobile-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(15,23,42,0.42);
        z-index: 9998;
        backdrop-filter: blur(2px);
    }
    .mobile-overlay.active { display: block; }

    .mobile-nav {
        position: fixed;
        top: 0;
        right: -84vw;
        width: 84vw;
        max-width: 360px;
        height: 100vh;
        background: linear-gradient(180deg,#fff 0%,#f8fbff 100%);
        z-index: 9999;
        transition: right 0.28s ease;
        overflow-y: auto;
        box-shadow: -20px 0 40px rgba(15,23,42,0.16);
        border-top-left-radius: 22px;
        border-bottom-left-radius: 22px;
        border-left: 1px solid #eef2f7;
    }
    .mobile-nav.active { right: 0; }
    .mobile-nav-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 18px 18px 14px;
        border-bottom: 1px solid #eef2f7;
        background: linear-gradient(180deg,#fff,#f7f9fc);
        border-top-left-radius: 22px;
    }
    .mobile-nav-header span { font-size: 16px; font-weight: 800; color: #0f172a; }
    .mobile-nav-close {
        width: 32px; height: 32px; border: none;
        background: #f1f5f9; border-radius: 50%;
        font-size: 16px; color: #64748b; cursor: pointer;
    }
    .mobile-nav-body { padding: 8px 0 14px; }
    .mobile-nav-group { border-bottom: 1px solid #eef2f7; }
    .mobile-nav-group-title {
        padding: 14px 18px 10px; font-size: 12px;
        font-weight: 800; color: #94a3b8;
        letter-spacing: .08em; text-transform: uppercase;
    }
    .mobile-nav-link {
        display: block; padding: 14px 18px;
        font-size: 15px; color: #0f172a;
        text-decoration: none; border-left: 3px solid transparent;
        border-radius: 0 14px 14px 0; margin: 0 10px;
    }
    .mobile-nav-link:active { background: #eef4ff; border-left-color: #1890ff; }
    .mobile-nav-link-single { border-bottom: 1px solid #eef2f7; }
    .mobile-nav-btns { padding: 16px 14px 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .mobile-nav-btn {
        padding: 12px 10px; text-align: center;
        border-radius: 12px; font-size: 13px; font-weight: 700;
        text-decoration: none;
    }
    .mobile-nav-btn-login { background: #eff6ff; color: #1d4ed8; }
    .mobile-nav-btn-reg { background: linear-gradient(135deg,#1890ff,#2b7fff); color: #fff; }

    /* === Hero Carousel === */
    .hero-carousel { height: 260px; }
    .carousel-content { padding: 20px; }
    .carousel-content h1 { font-size: 22px; margin-bottom: 8px; }
    .carousel-content p { font-size: 13px; margin-bottom: 16px; }
    .carousel-btn { width: 32px; height: 32px; font-size: 16px; }
    .carousel-indicators { bottom: 12px; }
    .carousel-dot { width: 6px; height: 6px; }

    /* === Sections === */
    .section { padding: 40px 14px; }
    .section-title { font-size: 20px; margin-bottom: 8px; }
    .section-subtitle { font-size: 13px; margin-bottom: 24px; }

    /* === 产品卡片 === */
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .product-card { padding: 18px 12px; border-radius: 8px; }
    .product-icon { width: 52px; height: 52px; margin-bottom: 12px; }
    .product-card h5 { font-size: 13px; margin-bottom: 6px; }
    .product-card .desc { font-size: 11px; }

    /* === 服务能力 === */
    .service-grid { grid-template-columns: 1fr; gap: 14px; }
    .service-card { padding: 22px 18px; }
    .service-icon { width: 56px; height: 56px; margin-bottom: 14px; }
    .service-emoji { font-size: 1.5rem; }
    .service-card h4 { font-size: 17px; margin-bottom: 14px; }
    .service-list li { font-size: 13px; padding: 8px 0 8px 18px; }

    /* === 行业方案 (微盟风格) === */
    .industry-solutions-weimob { padding: 40px 14px; }
    .industry-tabs-weimob { gap: 6px; margin-bottom: 20px; flex-wrap: wrap; }
    .industry-tab-weimob { padding: 7px 14px; font-size: 12px; }
    .industry-cases-container { gap: 8px; }
    .industry-case-card { min-width: 260px; max-width: 260px; padding: 20px; }
    .case-card-header h4 { font-size: 14px; }
    .case-detail-link { font-size: 12px; }
    .case-card-desc { font-size: 12px; margin-bottom: 16px; }
    .stat-value { font-size: 16px; }
    .stat-label { font-size: 10px; }
    .case-nav-btn { width: 36px; height: 36px; font-size: 18px; }
    .industry-feature-item { padding: 16px 14px; }
    .feature-item-icon { font-size: 2rem; margin-bottom: 8px; }
    .feature-item-title { font-size: 0.9rem; }
    .feature-item-desc { font-size: 0.8rem; }

    /* === 品牌案例 === */
    .brand-slides { height: auto; min-height: auto; }
    .brand-slide { padding: 20px 14px; }
    .brand-slide-inner { flex-direction: column; gap: 12px; }
    .brand-visual { display: none; }
    .brand-info { padding: 14px; }
    .brand-info h3 { font-size: 16px; margin-bottom: 10px; }
    .brand-stat { flex-direction: row; gap: 10px; }
    .stat-value { font-size: 18px; }
    .stat-label { font-size: 10px; }
    .brand-controls { margin-top: 12px; }
    .brand-nav-btn { width: 32px; height: 32px; font-size: 16px; }
    .brand-visual-placeholder { width: 100px; height: 100px; font-size: 2.5rem; }

    /* === HOS系统 === */
    .wos-features { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .wos-feature { padding: 18px 14px; }
    .wos-feature h4 { font-size: 13px; }

    /* === 研发实力 === */
    .rd-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .rd-stat { padding: 14px 10px; }
    .rd-stat .value { font-size: 18px; }
    .rd-stat .label { font-size: 10px; }

    /* === 资质证书 === */
    .cert-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .cert-item { padding: 14px 10px; }
    .cert-item .icon { font-size: 24px; }

    /* === 新闻动态 === */
    .news-grid { grid-template-columns: 1fr; gap: 14px; }
    .news-item { padding: 16px; }
    .news-item h6 { font-size: 14px; }

    /* === CTA Banner === */
    .cta-banner { height: auto; padding: 36px 16px; }
    .cta-content h2 { font-size: 22px; margin-bottom: 8px; }
    .cta-content p { font-size: 13px; margin-bottom: 18px; }
    .cta-btn { padding: 12px 32px; font-size: 13px; }

    /* === Footer === */
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .footer h5 { font-size: 13px; margin-bottom: 12px; }
    .footer a { font-size: 12px; margin-bottom: 6px; }
    .footer-bottom { font-size: 11px; }

    /* === Mega Dropdown (手机隐藏) === */
    .mega-dropdown { display: none !important; }
    .simple-dropdown { display: none !important; }
}

/* 超小屏幕 */
@media (max-width: 480px) {
    .header-inner { padding: 0 10px; }
    .logo img { height: 28px; }
    .logo-text { font-size: 12px; letter-spacing: .3px; }
    .mobile-nav { width: 88vw; max-width: 300px; }
    .mobile-nav-link { font-size: 14px; padding: 13px 16px; margin: 0 8px; }
    .mobile-nav-btns { padding: 14px 12px 16px; grid-template-columns: 1fr; }
    .mobile-nav-btn { width: 100%; }

    .hero-carousel { height: 220px; }
    .carousel-content h1 { font-size: 18px; }
    .carousel-content p { font-size: 12px; }

    .section { padding: 32px 12px; }
    .section-title { font-size: 18px; }

    .product-grid { gap: 8px; }
    .product-card { padding: 14px 10px; }
    .product-icon { width: 48px; height: 48px; }
    .product-card h5 { font-size: 12px; }

    .industry-features-grid { grid-template-columns: 1fr; gap: 10px; }
    .industry-feature-item {
        display: flex; align-items: center; gap: 10px;
        padding: 14px 12px; text-align: left;
    }
    .feature-item-icon { font-size: 1.6rem; margin-bottom: 0; }
    .feature-item-title { font-size: 0.85rem; margin-bottom: 2px; }
    .feature-item-desc { font-size: 0.75rem; }

    .wos-features { grid-template-columns: 1fr; gap: 8px; }
    .rd-stats { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .cert-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .cert-item { padding: 10px 6px; }
    .footer-grid { grid-template-columns: 1fr; gap: 16px; }

    .industry-case-card { min-width: 240px; max-width: 240px; padding: 16px; }
}

/* 手机端导航 - 可展开子菜单 */
.mobile-nav-group-title { cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.mobile-nav-group-title .nav-arrow { font-size: 18px; color: #94a3b8; transition: transform 0.3s; }
.mobile-nav-group.expanded .mobile-nav-group-title .nav-arrow { transform: rotate(90deg); }
.mobile-nav-group.expanded .mobile-nav-group-title { color: #1890ff; }
.mobile-nav-children { display: none; background: rgba(241,245,249,.4); }
.mobile-nav-group.expanded .mobile-nav-children { display: block; }
.mobile-nav-sublink { padding-left: 36px; font-size: 13px; color: #64748b; border-left: 2px solid #e2e8f0; margin: 0 10px; border-radius: 0 8px 8px 0; }
.mobile-nav-sublink:active { background: #eef4ff; border-left-color: #1890ff; color: #0f172a; }