/* =========================================
   layout.css
   正文页面通用布局系统
   只负责：页面主体 / 标题区 / 内容卡片 / 通用正文样式
   不负责：header / nav / menu / footer
========================================= */

/* ===== 颜色变量（只在本文件内兜底，不影响其他 CSS） ===== */
:root{
  --color-primary: #1E3A8A;
  --color-primary-light: #3B82F6;
  --color-accent: #F97316;
  --color-accent-light: #FB923C;

  --color-text-main: #1F2937;
  --color-text-secondary: #6B7280;

  --color-border: #E5E7EB;
  --color-bg: #F3F5F9;
  --color-white: #FFFFFF;
}

/* ===== 基础重置（轻量，不去动 header/menu/footer 的结构） ===== */
*{
  box-sizing: border-box;
}

body{
  font-family: "Microsoft YaHei","PingFang SC",Arial,sans-serif;
  background: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.8;
  margin: 0;
}

a{
  color: inherit;
  text-decoration: none;
}

img{
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 全站通用容器 ===== */
/* 可供 header / nav / footer 内部复用，但这里只定义基础宽度 */
.container{
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 正文页主体 ===== */
.page-main{
  max-width: 1200px;
  margin: 30px auto 0;
  padding: 0 20px 30px;
}

/* ===== 页面标题区 ===== */
.page-head{
  margin-bottom: 30px;
}

.page-head h1{
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary);
  margin: 0 0 10px;
}

.page-head p{
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--color-text-secondary);
}

/* ===== 内容卡片区 ===== */
.content-block{
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
  margin-bottom: 22px;
}

/* ===== 正文内容基础排版 ===== */
.content-block h2,
.content-section h2{
  font-size: 24px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-primary);
  margin: 0 0 14px;
}

.content-block h3,
.content-section h3{
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-primary-light);
  margin: 24px 0 10px;
}

.content-block p,
.content-section p{
  margin: 12px 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-main);
}

.content-block ul,
.content-block ol,
.content-section ul,
.content-section ol{
  margin: 10px 0 16px 24px;
  padding: 0;
}

.content-block li,
.content-section li{
  margin: 6px 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-main);
}

/* ===== 引言 / 开头说明 ===== */
.intro{
  font-size: 17px;
  line-height: 1.85;
  color: var(--color-text-secondary);
}

/* ===== 说明框 / 规则框 / 提示框 ===== */
.note-box,
.rule-box,
.info-box{
  background: #F8FAFC;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary-light);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 16px 0 24px;
}

.note-box p,
.rule-box p,
.info-box p{
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

/* ===== 重点提示框 ===== */
.highlight-box,
.alert-box{
  background: #FFF7ED;
  border: 1px solid #FED7AA;
  border-left: 4px solid var(--color-accent);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 16px 0 24px;
}

.highlight-box p,
.alert-box p{
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-main);
  font-weight: 600;
}

/* ===== 总结区 ===== */
.summary-box{
  margin-top: 32px;
  background: #FFF8E8;
  border: 1px solid #F3DDB0;
  border-radius: 12px;
  padding: 20px 22px;
}

.summary-box h2{
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.summary-box p{
  margin: 8px 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-main);
  font-weight: 600;
}

/* ===== 代码/文件名/规则值显示 ===== */
.code-line{
  display: block;
  background: #F6F8FA;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0;
  overflow-x: auto;

  font-family: Consolas, Monaco, monospace;
  font-size: 14px;
  line-height: 1.6;
  color: #334155;
}

/* ===== 表格 ===== */
.table-wrap{
  overflow-x: auto;
  margin: 18px 0 28px;
}

table{
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  font-size: 16px;
}

th,
td{
  border: 1px solid #E6EAF0;
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

th{
  background: #F5F8FC;
  color: var(--color-primary);
  font-weight: 700;
}

td{
  color: var(--color-text-main);
  line-height: 1.75;
}

/* ===== 分隔辅助 ===== */
.section-gap{
  margin-top: 34px;
}

.text-center{
  text-align: center;
}

.text-right{
  text-align: right;
}

/* ===== 按钮（正文页内少量使用，不覆盖 menu/header 按钮） ===== */
.page-btn,
.content-btn{
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all .2s ease;
  cursor: pointer;
}

.page-btn-primary,
.content-btn-primary{
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.page-btn-primary:hover,
.content-btn-primary:hover{
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
}

.page-btn-outline,
.content-btn-outline{
  background: #fff;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.page-btn-outline:hover,
.content-btn-outline:hover{
  background: #EFF6FF;
}

/* ===== 手机端 ===== */
@media (max-width: 768px){

  .container{
    padding: 0 12px;
  }

  .page-main{
    margin: 24px auto 0;
    padding: 0 12px 20px;
  }

  .page-head{
    margin-bottom: 24px;
  }

  .page-head h1{
    font-size: 26px;
  }

  .page-head p,
  .intro{
    font-size: 16px;
  }

  .content-block{
    padding: 22px 16px;
    border-radius: 12px;
  }

  .content-block h2,
  .content-section h2{
    font-size: 21px;
  }

  .content-block h3,
  .content-section h3{
    font-size: 18px;
  }

  .content-block p,
  .content-block li,
  .content-section p,
  .content-section li,
  th,
  td{
    font-size: 16px;
  }

  .summary-box{
    padding: 18px 16px;
  }

  .summary-box h2{
    font-size: 20px;
  }
}