/* 鼎晟速达官网样式 */

:root {
    --primary: #1a237e;
    --primary-light: #3949ab;
    --primary-dark: #0d1845;
    --accent: #ff6f00;
    --bg-light: #f5f7fa;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
    color: #333;
    background: #fff;
    overflow-x: hidden;
}

/* 导航栏 */
.navbar-dark {
    background: rgba(13, 24, 69, 0.95) !important;
    backdrop-filter: blur(10px);
    padding: 12px 0;
    transition: all 0.3s;
}
.navbar-dark .navbar-brand {
    font-size: 1.4rem;
    color: #fff;
}
.brand-icon { margin-right: 4px; }
.navbar-dark .nav-link {
    color: rgba(255,255,255,0.75) !important;
    font-weight: 500;
    transition: color 0.2s;
}
.navbar-dark .nav-link:hover,
.navbar-dark .nav-link.active {
    color: #fff !important;
}

/* Hero */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    background: linear-gradient(135deg, #0d1845 0%, #1a237e 30%, #283593 60%, #3949ab 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="30" cy="30" r="1" fill="white" opacity="0.05"/></svg>');
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}
.hero-content h1 {
    letter-spacing: 4px;
}
.hero-content .lead {
    font-size: 1.25rem;
}

/* 页面头 */
.page-header {
    background: linear-gradient(135deg, #1a237e, #283593);
    padding: 120px 0 60px;
    text-align: center;
}

/* 统计卡片 */
.stat-card {
    padding: 30px 15px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

/* 业务卡片 */
.business-card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    overflow: hidden;
}
.business-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}
.business-card .icon-box {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 15px;
}

/* 平台标签 */
.platform-badge {
    background: #fff;
    border: 2px solid #e0e6ed;
    border-radius: 12px;
    padding: 20px 10px;
    font-weight: 600;
    color: #555;
    transition: all 0.3s;
}
.platform-badge:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

/* CTA */
.cta-box {
    background: linear-gradient(135deg, #1a237e, #283593);
    border-radius: 24px;
    padding: 60px 30px;
}

/* 公司统计 */
.company-stats {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 40px 20px;
}

/* 价值观卡片 */
.value-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-light);
    border-radius: 16px;
    height: 100%;
}
.value-card .icon-box {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto;
}

/* 服务行 */
.service-row {
    align-items: center;
    padding: 30px 0;
    border-bottom: 1px solid #eee;
}
.service-img-placeholder {
    background: var(--bg-light);
    border-radius: 16px;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: #ccc;
}

/* 联系卡片 */
.contact-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.08);
}
.contact-list { list-style: none; padding: 0; }
.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid #f0f0f0;
}
.contact-item:last-child { border-bottom: none; }
.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

/* 页脚 */
.footer {
    background: #0d1845;
    color: rgba(255,255,255,0.7);
    padding: 40px 0;
}
.footer a { color: rgba(255,255,255,0.7); text-decoration: none; }
.footer a:hover { color: #fff; }

/* 响应式 */
@media (max-width: 768px) {
    .hero { height: 80vh; min-height: 500px; }
    .hero-content h1 { font-size: 2.5rem; }
    .service-row { text-align: center; }
}