/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 蓝色主题色变量 */
:root {
    --primary-blue: #1890ff;
    --primary-dark: #096dd9;
    --primary-light: #40a9ff;
    --secondary-blue: #e6f7ff;
    --accent-blue: #69c0ff;
    --text-dark: #262626;
    --text-light: #595959;
    --border-color: #d9d9d9;
    --bg-light: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 4px 12px rgba(24, 144, 255, 0.1);
    --shadow-hover: 0 8px 24px rgba(24, 144, 255, 0.15);
}

/* 导航栏样式 */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 2px solid var(--primary-blue);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-blue);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
    padding: 8px 0;
    position: relative;
    display: block;
}

.nav-link:hover {
    color: var(--primary-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 桌面端：隐藏箭头 */
.nav-arrow {
    display: none;
}

/* 桌面端下拉菜单样式 */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 200px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 8px 0;
    margin-top: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;list-style: none;
    z-index: 1001;
}

/* 桌面端：悬浮显示下拉菜单 */
.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown li {
    padding: 0;
}

.nav-dropdown li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.nav-dropdown li a:hover {
    background: var(--secondary-blue);
    color: var(--primary-blue);
    padding-left: 25px;
}

.nav-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.btn-login {
    padding: 8px 20px;
    border: 2px solid var(--primary-blue);
    background: transparent;
    color: var(--primary-blue);
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;font-size: 14px;
}

.btn-login:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-register {
    padding: 8px 20px;
    background: var(--primary-blue);
    color: var(--white);
    border: 2px solid var(--primary-blue);
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
}

.btn-register:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;gap: 5px;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s ease;display: block;
}

/* LOGO图片样式 */
.logo-img {
    height: 40px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
}

.footer-logo {
    height: 35px;
    width: auto;margin-bottom: 15px;
}

/* 移动端菜单打开时防止背景滚动 */
body.menu-open {
    overflow: hidden;
}

/* ==================== 移动端样式 ==================== */
@media (max-width: 768px) {
    /* 显示汉堡菜单 */
    .hamburger {
        display: flex;
    }
    
    /* 汉堡菜单动画 */
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    /* 移动端导航菜单 */
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        gap: 0;
        padding: 0;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        overflow-y: auto;
        z-index: 999;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    /* 移动端导航项 */
    .nav-item {
        border-bottom: 1px solid #eee;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }
    
    /* 移动端导航链接 */
    .nav-item .nav-link {
        flex: 1;
        padding: 16px 20px;
        font-size: 15px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .nav-item .nav-link::after {
        display: none;
    }
    
    /* 移动端箭头样式 */
    .nav-arrow {
        display: block;
        width: 32px;
        height: 32px;
        line-height: 32px;
        text-align: center;
        cursor: pointer;
        color: var(--text-light);
        transition: transform 0.3s ease;
        flex-shrink: 0;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        margin-right: 16px;
    }
    
    .nav-arrow::before {
        content: '▾';
        font-size: 16px;
        font-weight: bold;
        display: inline-block;
        transition: transform 0.3s ease;
    }
    
    /* 展开状态箭头旋转 */
    .nav-item.open .nav-arrow::before {
        transform: rotate(90deg);
    }
    
    /* 移动端下拉菜单 */
    .nav-dropdown {
        position: static;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-radius: 0;
        padding: 0;
        margin: 0;
        background: #f8f9fa;
        transition: max-height 0.3s ease;
    }
    
    /* 展开状态的下拉菜单 */
    .nav-item.open .nav-dropdown {
        max-height: 500px;
    }
    
    /* 移动端禁用hover效果 */
    .nav-item:hover .nav-dropdown {
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    
    .nav-dropdown li {
        border-bottom: 1px solid #eee;
    }
    
    .nav-dropdown li:last-child {
        border-bottom: none;
    }
    
.nav-dropdown li a {
        padding: 14px 20px 14px 40px;
        font-size: 14px;
        color: var(--text-dark);
}
    
    .nav-dropdown li a:hover {
        background: rgba(24, 144, 255, 0.1);
        color: var(--primary-blue);
        padding-left: 45px;
    }
}

/* 头部区域样式 */
.hero {
    background: url('../img/banner.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-dark);
    padding: 100px 0 60px;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    justify-content: center;
    min-height: 40vh;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-description {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 32px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
}

.btn-primary {
    padding: 12px 32px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    padding: 12px 32px;
    background: transparent;
    color: var(--text-dark);
    border: 2px solid var(--text-dark);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--text-dark);
    color: var(--white);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.cloud-animation {
    position: relative;
    width: 300px;
    height: 200px;
}

.cloud-item {
    position: absolute;
    background: var(--primary-blue);
    border-radius: 50px;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.cloud-item:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20px;
    left: 50px;
    animation-delay: 0s;
}

.cloud-item:nth-child(2) {
    width: 60px;
    height: 60px;
    top: 60px;
    left: 150px;
    animation-delay: 2s;
}

.cloud-item:nth-child(3) {
    width: 100px;
    height: 100px;
    top: 100px;
    left: 80px;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 产品服务区域样式 */
.products {
    padding: 80px 0;
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

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

.section-description {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 320px;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-blue);
}

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

.product-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 48px;
}

.product-icon svg {
    width: 48px;
    height: 48px;
    color: var(--primary-blue);
}

.product-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.product-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 24px;
    flex-grow: 1;
}

.product-btn {
    padding: 10px 24px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: auto;
}

.product-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* 地区服务区域样式 */
.regional-services {
    padding: 80px 0;
    background: var(--white);
}

.regional-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.regional-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    height: 320px;
}

.regional-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow);transform: translateY(-2px);
}

.regional-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.regional-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
}

.regional-badge {
    background: var(--primary-blue);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.regional-services-list {
    list-style: none;
    margin-bottom: 24px;
    flex-grow: 1;
}

.regional-services-list li {
    padding: 8px 0;
    color: var(--text-light);
    position: relative;
    padding-left: 20px;
}

.regional-services-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

.regional-btn {
    padding: 10px 24px;
    background: #fff;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: auto;
}

.regional-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
}

/* 页脚样式 */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 16px;
    color: var(--white);
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #999;
}

/* 导航链接激活状态 */
.nav-link.active {
    color: var(--primary-blue);
    font-weight: 600;
}

.nav-link.active::after {
    width: 100%;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-container {
        gap: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .products-grid,
    .regional-grid {
        grid-template-columns: 1fr;
    }
    
    .regional-card {
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .product-card,
    .regional-card {
        padding: 30px 20px;
    }
}
/* 活动页样式 */
.new-activities-hero { position: relative; padding: 80px 0; background: linear-gradient(135deg, #e6f7ff 0%, #ffffff 60%); overflow: hidden; }
.hero-content-wrapper { display:flex; gap:40px; align-items:center; justify-content:space-between; }
.hero-text-content { max-width: 560px; }
.hero-badge { display:inline-flex; align-items:center; gap:8px; background:#fff; border:1px solid #eaeaea; border-radius:999px; padding:6px 12px; box-shadow:0 4px 12px rgba(0,0,0,.05); }
.title-gradient { background: linear-gradient(90deg, #1890ff, #69c0ff); -webkit-background-clip:text; background-clip:text; color: transparent; }
.title-accent { color:#096dd9; }
.hero-main-title { font-size: 42px; font-weight: 800; margin: 14px 0; letter-spacing: .2px; }
.hero-subtitle { color: var(--text-light); font-size: 16px; line-height: 1.75; }
.hero-stats { display:flex; gap:16px; margin-top: 20px; }
.stat-item { background:#fff; border:1px solid #eaeaea; border-radius:14px; padding:14px 18px; box-shadow:0 8px 20px rgba(24,144,255,.08); min-width: 120px; }
.stat-number { font-size: 24px; font-weight: 800; color:#1890ff; }
.stat-label { font-size: 12px; color: var(--text-light); }
.hero-cta-buttons { display:flex; gap:12px; margin-top: 22px; }
.cta-primary { display:inline-flex; align-items:center; gap:8px; padding:12px 18px; border:none; background:#1890ff; color:#fff; border-radius:10px; box-shadow: 0 8px 24px rgba(24,144,255,.16); cursor:pointer; }
.cta-primary:hover { background:#096dd9; box-shadow: 0 12px 32px rgba(24,144,255,.18); }
.cta-primary:focus { outline: none; box-shadow: 0 0 0 3px rgba(24,144,255,.3); }
.cta-secondary { display:inline-flex; align-items:center; gap:8px; padding:12px 18px; border:1px solid #eaeaea; background:#fff; color:#333; border-radius:10px; cursor:pointer; }
.hero-visual-area { flex:1; position:relative; }
.floating-elements { position:absolute; inset:0; display:flex; gap:16px; justify-content:flex-end; padding-right:20px; }
.floating-card { background:#fff; border:1px solid #eaeaea; border-radius:16px; padding:12px 16px; box-shadow:0 10px 30px rgba(24,144,255,.15); animation: floatUp 6s ease-in-out infinite; }
.floating-card .card-icon { font-size: 18px; }
.floating-card .card-title { font-weight: 700; }
.main-visual { position:relative; width: 300px; height: 220px; margin-left:auto; }
.visual-circle { position:absolute; border-radius:999px; background:#e6f7ff; }
.visual-circle.circle-1 { width: 160px; height:160px; top:0; left:0; }
.visual-circle.circle-2 { width: 120px; height:120px; top:40px; right:20px; }
.visual-circle.circle-3 { width: 80px; height:80px; bottom:0; left:80px; }
.center-element { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; }
.pulse-ring { width: 80px; height:80px; border:2px solid #69c0ff; border-radius:999px; animation: pulse 2.4s infinite; }
.center-icon { position:absolute; font-size: 20px; color:#1890ff; }
@keyframes pulse { 0%{ transform: scale(1); opacity:1;} 100%{ transform: scale(1.8); opacity:0;} }
@keyframes floatUp { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-8px);} }

.activities-list .section-header { text-align: left; margin-bottom: 20px; }
.activities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.activity-card {
    background: var(--white);
    border: 1px solid #eee;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(24,144,255,0.08);
    transition: transform .2s ease, box-shadow .2s ease;
    min-height: 280px;
    border-left: 4px solid var(--primary-blue);
}
.activity-card:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(24,144,255,0.12); border-left-color: var(--primary-dark); }
.activity-header { display:flex; align-items:center; justify-content:space-between; }
.activity-icon { color: var(--primary-blue); }
.activity-meta { display:flex; gap:10px; align-items:center; }
.activity-badge { padding:4px 10px; border-radius:999px; font-size:12px; background:#e6f7ff; color:#096dd9; box-shadow:0 4px 12px rgba(24,144,255,.1); }
.activity-title { font-size:22px; margin:12px 0; }
.activity-description { color: var(--text-light); font-size:14px; line-height: 1.75; }
.activity-features { display:flex; flex-wrap:wrap; gap:8px; margin:8px 0; }
.activity-features span { padding:4px 8px; background:#f5f5f5; border-radius:999px; font-size:12px; }
.activity-btn { padding:12px 18px; border:none; background: var(--primary-blue); color:#fff; border-radius:8px; cursor:pointer; box-shadow:0 8px 24px rgba(24,144,255,.16); }
.activity-btn:hover { background: var(--primary-dark); box-shadow:0 12px 32px rgba(24,144,255,.18); }
.activity-btn:focus { outline:none; box-shadow:0 0 0 3px rgba(24,144,255,.3); }

@media (max-width: 768px) {
  .hero-content-wrapper { flex-direction: column; }
  .main-visual { margin:20px auto 0; }
  .activities-grid { grid-template-columns: 1fr; }
  .hero-main-title { font-size: 34px; }
}
/* 解决方案页样式 */
.solutions-hero { padding: 80px 0 40px; background: linear-gradient(180deg, #ffffff, #f7fbff); }
.solutions-title { font-size: 36px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.solutions-description { font-size: 18px; color: var(--text-light); margin-bottom: 20px; }
.solutions-actions { display:flex; gap:12px; }
.solutions-visual { display:flex; justify-content:center; align-items:center; }
.solutions-animation { display:grid; grid-template-columns: repeat(4, 1fr); gap:16px; }
.solution-item { background:#ffffff; border:1px solid #eee; border-radius:16px; padding:18px; text-align:center; box-shadow:0 8px 24px rgba(24,144,255,0.08); transition: transform .2s ease, box-shadow .2s ease; }
.solution-item { min-height: 160px; }
.solution-item:hover { transform: translateY(-3px); box-shadow:0 12px 32px rgba(24,144,255,0.12); }
.solution-icon { margin-bottom:8px; }
.icon-symbol { font-size:24px; }

.industry-solutions { padding: 40px 0; }
.industry-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:20px; }
.industry-card { background:var(--white); border:1px solid #eee; border-radius:16px; padding:18px; box-shadow:0 8px 24px rgba(24,144,255,0.08); transition: transform .2s ease, box-shadow .2s ease; }
.industry-card { min-height: 300px; }
.industry-card:hover { transform: translateY(-3px); box-shadow:0 12px 32px rgba(24,144,255,0.12); }
.industry-header { display:flex; align-items:center; gap:12px; margin-bottom:8px; }
.industry-icon .industry-symbol { width:32px; height:32px; display:flex; align-items:center; justify-content:center; background:#e6f7ff; color:#096dd9; border-radius:8px; }
.solution-subtitle { color: var(--text-light); margin-bottom:8px; }
.industry-features { padding-left:18px; margin:8px 0; }
.industry-btn { padding:10px 16px; border:none; background: var(--primary-blue); color:#fff; border-radius:6px; cursor:pointer; }
.industry-btn:hover { background: var(--primary-dark); }

.tech-architecture { padding: 40px 0; }
.architecture-grid { display:grid; grid-template-columns: repeat(4, 1fr); gap:20px; }
.architecture-layer { background:#ffffff; border:1px solid #eee; border-radius:16px; padding:18px; box-shadow:0 8px 24px rgba(0,0,0,0.04); }
.layer-tech { margin-top:8px; color: var(--text-light); font-size:14px; }

.success-cases { padding: 40px 0; }
.cases-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:20px; }
.case-card { background:var(--white); border:1px solid #eee; border-radius:16px; padding:18px; display:flex; gap:12px; align-items:center; box-shadow:0 8px 24px rgba(0,0,0,0.04); }
.case-card { min-height: 160px; }
.case-logo .case-symbol { width:40px; height:40px; display:flex; align-items:center; justify-content:center; background:#f5f5f5; border-radius:8px; }
.case-stats .stat { font-weight:700; color: var(--primary-blue); margin-right:6px; }
.stat-label { color: var(--text-light); font-size:12px; }

@media (max-width: 1024px) {
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .architecture-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .solutions-animation { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: 1fr; }
  .architecture-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .activity-card { min-height: 240px; }
  .industry-card { min-height: 260px; }
  .case-card { min-height: 140px; }
  .solution-item { min-height: 140px; }
}