/* 新开道企业官网 - 极简样式 */
/* 遵循"尽量少加CSS"原则，仅保留基础排版与可读性样式 */

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.8;
    margin: 0;
    padding: 0;
    color: #222;
    background: #fff;
}

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

/* 头部导航 */
header {
    border-bottom: 1px solid #eee;
    padding: 15px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
    color: #0066cc;
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
}

.btn:hover {
    background: #0052a3;
}

/* 通用区块 */
section {
    padding: 40px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 30px;
}

.section-title h2 {
    margin: 0 0 10px;
    font-size: 28px;
}

.section-title p {
    color: #666;
    margin: 0;
}

/* Hero 首屏 */
.hero {
    background: #f7f9fc;
    padding: 60px 0;
}

.hero-inner {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-content {
    flex: 1;
    min-width: 300px;
}

.hero-content h1 {
    font-size: 36px;
    margin: 0 0 15px;
    line-height: 1.3;
}

.hero-content .slogan {
    font-size: 20px;
    color: #0066cc;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 16px;
    color: #555;
    margin-bottom: 25px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-media {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.hero-media img {
    max-width: 100%;
    height: auto;
}

/* 网格布局 */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* 卡片 */
.card {
    border: 1px solid #eee;
    padding: 25px;
    border-radius: 6px;
    background: #fff;
}

.card h3 {
    margin-top: 0;
    color: #0066cc;
}

/* 数据展示 */
.data-card {
    text-align: center;
    padding: 25px;
}

.data-number {
    font-size: 36px;
    font-weight: 700;
    color: #0066cc;
    display: block;
}

.data-label {
    color: #666;
}

/* FAQ */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #eee;
    padding: 20px 0;
}

.faq-item h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

.faq-item p {
    margin: 0;
    color: #555;
}

/* 表格 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

th {
    background: #f7f9fc;
}

/* 表单 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 15px;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* 页脚 */
footer {
    background: #f7f9fc;
    padding: 40px 0 20px;
    margin-top: 40px;
}

.footer-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 30px;
}

.footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-col a {
    color: #333;
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid #ddd;
    padding-top: 20px;
    text-align: center;
    color: #777;
    font-size: 14px;
}

/* 后台管理 */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.admin-table th,
.admin-table td {
    border: 1px solid #ddd;
    padding: 10px;
}

.admin-table th {
    background: #f0f4f8;
}

.message {
    padding: 12px 15px;
    background: #e6f7ff;
    border: 1px solid #91d5ff;
    border-radius: 4px;
    margin-bottom: 20px;
}

.message.error {
    background: #fff1f0;
    border-color: #ffa39e;
}

/* 响应式 */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-menu {
        gap: 15px;
    }

    .hero-content h1 {
        font-size: 26px;
    }

    section {
        padding: 30px 0;
    }
}