/* 龙哥侃侃谈家庭教育 · 官方网站样式表 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: #2c3e50;
    background: #f5f7fa;
    line-height: 1.8;
    font-size: 16px;
}

/* 顶部导航 */
.header {
    background: #1a365d;
    color: #ffffff;
    padding: 0;
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.logo {
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
}

.logo span {
    font-size: 13px;
    font-weight: normal;
    opacity: 0.85;
    margin-left: 10px;
}

.nav {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}

.nav li {
    margin-left: 26px;
}

.nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    opacity: 0.9;
}

.nav a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* 主体 */
.main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 30px 20px 50px;
}

.hero {
    background: #ffffff;
    border-radius: 10px;
    padding: 40px 36px;
    margin-bottom: 24px;
    border-left: 5px solid #2d5a87;
}

.hero h1 {
    font-size: 26px;
    color: #1a365d;
    margin-bottom: 12px;
}

.hero p {
    font-size: 16px;
    color: #4a5a6a;
}

h2.section-title {
    font-size: 21px;
    color: #1a365d;
    margin: 34px 0 16px;
    padding-left: 12px;
    border-left: 4px solid #2d5a87;
}

.card {
    background: #ffffff;
    border-radius: 10px;
    padding: 30px 34px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 18px;
    color: #1a365d;
    margin-bottom: 10px;
}

.card p {
    color: #445566;
}

/* 信息表 */
.info-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border-radius: 10px;
    overflow: hidden;
}

.info-table th,
.info-table td {
    border: 1px solid #e2e8f0;
    padding: 14px 18px;
    text-align: left;
    font-size: 15px;
    vertical-align: top;
}

.info-table th {
    background: #eef2f7;
    color: #1a365d;
    font-weight: bold;
    width: 160px;
    white-space: nowrap;
}

/* 内容栏目 */
.cols {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.col {
    flex: 1 1 300px;
    background: #ffffff;
    border-radius: 10px;
    padding: 26px 28px;
    border-top: 4px solid #2d5a87;
}

.col h3 {
    font-size: 18px;
    color: #1a365d;
    margin-bottom: 10px;
}

.col p {
    color: #445566;
    font-size: 15px;
}

.placeholder {
    color: #b03a2e;
    font-weight: bold;
}

/* 二维码 */
.qr-box {
    background: #ffffff;
    border-radius: 10px;
    padding: 30px 34px;
    text-align: center;
}

.qr-box img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.qr-box p {
    margin-top: 14px;
    color: #4a5a6a;
    font-size: 15px;
}

/* 条款正文 */
.doc p {
    margin-bottom: 14px;
    color: #3c4c5c;
}

.doc h3 {
    font-size: 17px;
    color: #1a365d;
    margin: 22px 0 8px;
}

.doc ul {
    margin: 0 0 14px 22px;
    color: #3c4c5c;
}

.doc li {
    margin-bottom: 6px;
}

.update-time {
    color: #8a97a5;
    font-size: 14px;
    margin-bottom: 20px;
}

/* 页脚 */
.footer {
    background: #1a365d;
    color: #c8d4e2;
    padding: 26px 20px;
    font-size: 13px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
    line-height: 2;
}

.footer a {
    color: #c8d4e2;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* 手机适配 */
@media (max-width: 640px) {
    .hero {
        padding: 28px 22px;
    }

    .hero h1 {
        font-size: 22px;
    }

    .card {
        padding: 24px 22px;
    }

    .info-table th {
        width: 110px;
    }

    .header-inner {
        justify-content: center;
    }

    .nav li {
        margin: 6px 12px;
    }
}