/* === 基础重置与变量 === */
:root {
    --primary: #ff6600; /* 活力橙，代表速度、活力、醒目 */
    --primary-dark: #cc5200;
    --secondary: #3366cc; /* 信任蓝 */
    --dark: #333;
    --light: #f8f9fa;
    --gray: #6c757d;
    --success: #28a745;
    --border: #dee2e6;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #fff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === 通用样式 === */
.section {
    padding: 80px 0;
}
.bg-light { background-color: var(--light); }
.bg-dark { background-color: #2c3e50; color: #ecf0f1; }
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark);
}
.section-title.light { color: #fff; }
.section-title span { color: var(--primary); }
.section-subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}
.section-subtitle.light { color: #ccc; }
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}
.btn-call {
    background-color: var(--success);
    color: white;
}
.btn-wechat {
    background-color: #07c160; /* 微信绿 */
    color: white;
}
.btn-outline {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.btn-contact {
    background: var(--primary);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
}

/* === 顶部公告 === */
.announcement {
    background-color: var(--primary);
    color: white;
    padding: 8px 0;
    font-size: 0.9rem;
    text-align: center;
}
.announcement i { margin-right: 8px; }

/* === 主导航 === */
.main-header {
    background-color: white;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}
.brand-logo h1 {
    font-size: 1.8rem;
    line-height: 1;
}
.sdgo { color: var(--dark); font-weight: 800; }
.run { color: var(--primary); font-weight: 800; }
.tagline {
    font-size: 0.75rem;
    color: var(--gray);
    margin-top: -5px;
}
.main-nav ul {
    display: flex;
    list-style: none;
}
.main-nav li a {
    color: var(--dark);
    text-decoration: none;
    padding: 10px 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
}
.main-nav li a i { margin-right: 5px; }
.main-nav li a:hover {
    color: var(--primary);
}
.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* === 英雄区域 === */
.hero-section {
    padding: 100px 0 60px;
    background: linear-gradient(135deg, #fdfcfb 0%, #f5f7fa 100%);
    overflow: hidden;
}
.hero-section .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.hero-content { flex: 1; max-width: 600px; }
.hero-content h2 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}
.highlight {
    color: var(--primary);
    border-bottom: 3px solid var(--primary);
}
.lead {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 2rem;
}
.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 3rem;
}
.hero-stats {
    display: flex;
    gap: 30px;
}
.stat {
    text-align: center;
}
.number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}
.number span { font-size: 1.5rem; }
.label {
    font-size: 0.9rem;
    color: var(--gray);
}
.hero-image {
    flex: 1;
    text-align: center;
}
.hero-image img {
    max-width: 100%;
    height: auto;
}

/* === 服务网格 === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}
.service-card {
    background: white;
    padding: 30px 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-top: 4px solid transparent;
    transition: transform 0.3s, box-shadow 0.3s;
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    border-top-color: var(--primary);
}
.service-icon {
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    margin: 0 auto 20px;
    font-size: 1.8rem;
}
.service-card h3 {
    margin-bottom: 15px;
    color: var(--dark);
}

/* === 价格表 === */
.pricing-table {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
th, td {
    padding: 18px 15px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}
th {
    background-color: var(--light);
    font-weight: 700;
    color: var(--dark);
}
tbody tr:hover {
    background-color: #f8f9fa;
}
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.badge-fast {
    background-color: #d4edda;
    color: #155724;
}
.pricing-note {
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--gray);
    text-align: center;
}
.pricing-note i { color: var(--primary); margin-right: 5px; }

/* === 关于我们 === */
.about-wrapper {
    display: flex;
    align-items: center;
    gap: 50px;
}
.about-image { flex: 1; }
.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}
.about-content { flex: 1; }
.about-features {
    list-style: none;
    margin: 25px 0;
}
.about-features li {
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
}
.about-features i {
    color: var(--success);
    margin-right: 12px;
    margin-top: 3px;
    flex-shrink: 0;
}
.license-show {
    background: var(--light);
    padding: 20px;
    border-radius: 8px;
    margin-top: 25px;
}
.license-show h4 {
    color: var(--primary);
    margin-bottom: 10px;
}

/* === 联系我们 === */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 40px;
}
.contact-item {
    display: flex;
    margin-bottom: 30px;
    align-items: flex-start;
}
.contact-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-right: 20px;
    margin-top: 5px;
    flex-shrink: 0;
}
.wechat-qr {
    width: 120px;
    margin-top: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}
.contact-map {
    height: 400px;
    background: #eaeaea;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
#map-placeholder {
    color: var(--gray);
    text-align: center;
}
#map-placeholder i { font-size: 3rem; color: #bbb; margin-bottom: 15px; }

/* === 页脚 === */
.main-footer {
    background-color: #222;
    color: #aaa;
    padding: 50px 0 20px;
    text-align: center;
}
.footer-links {
    margin-bottom: 25px;
}
.footer-links a {
    color: #ccc;
    margin: 0 10px;
    text-decoration: none;
}
.footer-links a:hover {
    color: var(--primary);
}
.footer-brand {
    margin-bottom: 25px;
}
.footer-brand h3 { font-size: 2rem; margin-bottom: 5px; }
.footer-brand p { color: #888; }
.footer-copyright {
    border-top: 1px solid #444;
    padding-top: 25px;
    font-size: 0.9rem;
}
.beian-info a {
    color: #aaa;
    text-decoration: none;
}
.beian-info a:hover {
    color: var(--primary);
    text-decoration: underline;
}
.footer-note {
    margin-top: 10px;
    font-size: 0.8rem;
    color: #777;
}

/* === 浮动按钮 === */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s;
}
.float-btn:hover {
    transform: scale(1.1);
}
.float-btn.phone { background-color: var(--success); }
.float-btn.wechat { background-color: #07c160; }

/* === 响应式设计 === */
@media (max-width: 992px) {
    .hero-section .container,
    .about-wrapper,
    .contact-wrapper {
        flex-direction: column;
        grid-template-columns: 1fr;
    }
    .hero-content, .about-content { max-width: 100%; }
    .hero-stats { justify-content: center; }
}
@media (max-width: 768px) {
    .main-nav { display: none; }
    .mobile-menu-toggle { display: block; }
    .main-nav.active { display: block; }
    .main-nav ul {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        padding: 20px;
    }
    .hero-content h2 { font-size: 2.2rem; }
    .section-title { font-size: 2rem; }
    .floating-contact { bottom: 20px; right: 20px; }
}