/* ===== 全局重置 & 基础 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: #f5f7fb;
    color: #1e2a3a;
    line-height: 1.8;
    padding: 24px 16px 60px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    padding: 40px 48px 48px;
}

/* ===== 头部 ===== */
.header {
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f3f8;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 8px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #4f7cff, #6c5ce7);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: #fff;
    letter-spacing: 0.5px;
}

.brand-name {
    font-size: 22px;
    font-weight: 700;
    color: #0b1a33;
    letter-spacing: 0.3px;
}

.brand-name span {
    color: #4f7cff;
}

.header-sub {
    font-size: 14px;
    color: #7a8aa0;
    font-weight: 400;
}

/* ===== 文档通用样式 ===== */
.doc-title {
    font-size: 28px;
    font-weight: 700;
    color: #0b1a33;
    margin: 24px 0 6px;
    letter-spacing: 0.5px;
}

.doc-subtitle {
    font-size: 15px;
    color: #7a8aa0;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f3f8;
}

.doc-subtitle strong {
    color: #1e2a3a;
    font-weight: 600;
}

.toc {
    list-style: none;
    padding-left: 0;
    margin: 16px 0 24px;
    background: #f7f9fc;
    border-radius: 12px;
    padding: 16px 20px;
}

.toc li {
    margin: 6px 0;
    padding: 4px 0;
}

.toc a {
    text-decoration: none;
    color: #1e2a3a;
    font-weight: 600;
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    transition:
        background 0.2s,
        color 0.2s;
}

.toc a:hover {
    background: #e6edff;
    color: #4f7cff;
}

.toc-list {
    list-style: none;
    padding-left: 0;
}

.toc-list li {
    margin: 8px 0;
}

.section {
    margin-bottom: 32px;
}

.section h2 {
    font-size: 22px;
    font-weight: 700;
    color: #0b1a33;
    margin: 32px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f3f8;
    letter-spacing: 0.3px;
}

.section h3 {
    font-size: 18px;
    font-weight: 700;
    color: #1e2a3a;
    margin: 24px 0 12px;
}

.section h4 {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
    margin: 18px 0 10px;
}

.section p {
    margin: 12px 0;
    color: #2c3e50;
    font-size: 15px;
}

.section strong,
.section b {
    color: #0b1a33;
    font-weight: 700;
}

.section ul,
.section ol {
    margin: 12px 0 12px 24px;
    padding-left: 6px;
}

.section ul li,
.section ol li {
    margin: 8px 0;
    font-size: 15px;
    color: #2c3e50;
    line-height: 1.8;
}

.section ul ul,
.section ol ol {
    margin-top: 4px;
    margin-bottom: 4px;
}

.blockquote {
    background: #f7f9fc;
    border-left: 4px solid #4f7cff;
    padding: 16px 20px;
    margin: 16px 0;
    border-radius: 0 8px 8px 0;
    font-size: 15px;
    color: #2c3e50;
}

.blockquote p {
    margin: 6px 0;
}

.blockquote strong {
    color: #0b1a33;
}

/* ===== 表格样式（隐私政策专用） ===== */
.table-wrap {
    overflow-x: auto;
    margin: 16px 0 20px;
    border-radius: 10px;
    border: 1px solid #eef2f7;
}

.table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 600px;
}

.table-wrap th {
    background: #f7f9fc;
    font-weight: 600;
    color: #1e2a3a;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 2px solid #e2e8f0;
}

.table-wrap td {
    padding: 12px 16px;
    border-bottom: 1px solid #eef2f7;
    color: #2c3e50;
    vertical-align: top;
}

.table-wrap tr:last-child td {
    border-bottom: none;
}

/* ===== 附录（隐私政策专用） ===== */
.appendix {
    background: #f7f9fc;
    border-radius: 12px;
    padding: 20px 24px;
    margin-top: 24px;
}

.appendix h3 {
    font-size: 17px;
    margin-top: 0;
    color: #0b1a33;
}

.appendix p,
.appendix li {
    font-size: 14px;
    color: #3d4f66;
}

.appendix ul {
    margin: 8px 0 8px 20px;
}

/* ===== 底部 ===== */
.footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #eef2f7;
    text-align: center;
    font-size: 13px;
    color: #9aabbf;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    body {
        padding: 12px 8px 40px;
    }

    .container {
        padding: 20px 16px 28px;
        border-radius: 14px;
    }

    .header {
        padding: 12px 0 16px;
        flex-direction: column;
        align-items: flex-start;
    }

    .brand-name {
        font-size: 19px;
    }

    .header-sub {
        font-size: 13px;
    }

    .doc-title {
        font-size: 22px;
    }

    .section h2 {
        font-size: 19px;
    }

    .section h3 {
        font-size: 16px;
    }

    .section ul,
    .section ol {
        margin-left: 16px;
    }

    .section ul li,
    .section ol li {
        font-size: 14px;
    }

    .table-wrap table {
        font-size: 13px;
        min-width: 480px;
    }

    .table-wrap th,
    .table-wrap td {
        padding: 8px 12px;
    }

    .blockquote {
        padding: 12px 16px;
        font-size: 14px;
    }

    .appendix {
        padding: 16px 18px;
    }
}

@media (max-width: 420px) {
    .doc-title {
        font-size: 19px;
    }

    .section h2 {
        font-size: 17px;
    }
}