@charset "UTF-8";

/* 基础样式 */
html {
  font-size: 15px;
}

body {
  width: 80%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 12.5%;
  background-color: #fffff8;
  color: #111;
  max-width: 1400px;
  counter-reset: sidenote-counter;
}

/* 标题样式 */
h1 {
  font-weight: 400;
  margin-top: 4rem;
  margin-bottom: 1.5rem;
  font-size: 3.5rem;
  line-height: 1;
}

h2 {
  font-style: italic;
  font-weight: 400;
  margin-top: 2.1rem;
  margin-bottom: 1.4rem;
  font-size: 2.2rem;
  line-height: 1;
}

h3 {
  font-style: italic;
  font-weight: 400;
  font-size: 1.7rem;
  margin-top: 2rem;
  margin-bottom: 1.4rem;
  line-height: 1;
}

/* 水平线样式 */
hr {
  display: block;
  height: 1px;
  width: 55%;
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1em 0;
  padding: 0;
}

/* 副标题样式 */
p.subtitle {
  font-style: italic;
  margin-top: 1rem;
  margin-bottom: 1rem;
  font-size: 1.8rem;
  display: block;
  line-height: 1;
}

/* 危险提示样式 */
.danger {
  color: red;
}

/* 文章容器样式 */
article {
  padding: 5rem 0;
}

section {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

/* 文本块样式 */
dl,
ol,
p,
ul {
  font-size: 1.4rem;
  line-height: 2rem;
}

p {
  margin-top: 1.4rem;
  margin-bottom: 1.4rem;
  padding-right: 0;
  vertical-align: baseline;
}

/* 引言样式 */
div.epigraph {
  margin: 5em 0;
}

div.epigraph > blockquote {
  margin-top: 3em;
  margin-bottom: 3em;
}

div.epigraph > blockquote,
div.epigraph > blockquote > p {
  font-style: italic;
}

div.epigraph > blockquote > footer {
  font-style: normal;
}

div.epigraph > blockquote > footer > cite {
  font-style: italic;
}

/* 引用样式 */
blockquote {
  font-size: 1.4rem;
}

blockquote p {
  width: 55%;
  margin-right: 40px;
}

blockquote footer {
  width: 55%;
  font-size: 1.1rem;
  text-align: right;
}

/* 内容区域宽度控制 */
section > footer,
section > p,
section > table {
  width: 55%;
}

section > dl,
section > ol,
section > ul {
  width: 50%;
  -webkit-padding-start: 5%;
}

dt:not(:first-child),
li:not(:first-child) {
  margin-top: .25rem;
}

/* 图片/图表样式 */
figure {
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
  max-width: 55%;
  -webkit-margin-start: 0;
  -webkit-margin-end: 0;
  margin: 0 0 3em 0;
}

figcaption {
  float: right;
  clear: right;
  margin-top: 0;
  margin-bottom: 0;
  font-size: 1.1rem;
  line-height: 1.6;
  vertical-align: baseline;
  position: relative;
  max-width: 40%;
}

figure.fullwidth figcaption {
  margin-right: 24%;
}

/* 图片自适应 */
img {
  max-width: 100%;
}

/* 边注/旁注样式 */
.marginnote,
.sidenote {
  float: right;
  clear: right;
  margin-right: -60%;
  width: 50%;
  margin-top: .3rem;
  margin-bottom: 0;
  font-size: 1.1rem;
  line-height: 1.3;
  vertical-align: baseline;
  position: relative;
}

.sidenote-number {
  counter-increment: sidenote-counter;
}

.sidenote-number:after,
.sidenote:before {
  font-family: et-book-roman-old-style;
  position: relative;
  vertical-align: baseline;
}

.sidenote-number:after {
  content: counter(sidenote-counter);
  font-size: 1rem;
  top: -.5rem;
  left: .1rem;
}

.sidenote:before {
  content: counter(sidenote-counter) " ";
  font-size: 1rem;
  top: -.5rem;
}

blockquote .marginnote,
blockquote .sidenote {
  margin-right: -82%;
  min-width: 59%;
  text-align: left;
}

/* 全宽元素样式 */
div.fullwidth,
table.fullwidth {
  width: 100%;
}

/* 表格容器样式 */
div.table-wrapper {
  overflow-x: auto;
  font-family: "Trebuchet MS", "Gill Sans", "Gill Sans MT", sans-serif;
}

/* 无衬线字体样式 */
.sans {
  font-family: "Gill Sans", "Gill Sans MT", Calibri, sans-serif;
  letter-spacing: .03em;
}

/* 代码样式 */
code,
pre > code {
  font-family: "Fira Code", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  font-size: 1rem;
  line-height: 1.42;
  -webkit-text-size-adjust: 100%;
}

.sans > code {
  font-size: 1.2rem;
}

h1 > code,
h2 > code,
h3 > code {
  font-size: .8em;
}

.marginnote > code,
.sidenote > code {
  font-size: 1rem;
}

pre > code {
  font-size: .9rem;
  width: 52.5%;
  margin-left: 2.5%;
  overflow-x: auto;
  display: block;
}

pre.fullwidth > code {
  width: 90%;
}

.fullwidth {
  max-width: 90%;
  clear: both;
}

/* 新想法标记样式 */
span.newthought {
  font-variant: small-caps;
  font-size: 1.2em;
}

/* 移动端边注控制 */
input.margin-toggle {
  display: none;
}

label.sidenote-number {
  display: inline-block;
  max-height: 2rem;
}

label.margin-toggle:not(.sidenote-number) {
  display: none;
}

/* 嵌入框架容器 */
.iframe-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  padding-top: 25px;
  height: 0;
}

.iframe-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* 响应式适配 (移动端) */
@media (max-width: 760px) {
  body {
    width: 84%;
    padding-left: 8%;
    padding-right: 8%;
  }

  hr,
  section > footer,
  section > p,
  section > table {
    width: 100%;
  }

  pre > code {
    width: 97%;
  }

  section > dl,
  section > ol,
  section > ul {
    width: 90%;
  }

  figure {
    max-width: 90%;
  }

  figcaption,
  figure.fullwidth figcaption {
    margin-right: 0;
    max-width: none;
  }

  blockquote {
    margin-left: 1.5em;
    margin-right: 0;
  }

  blockquote footer,
  blockquote p {
    width: 100%;
  }

  label.margin-toggle:not(.sidenote-number) {
    display: inline;
  }

  .marginnote,
  .sidenote {
    display: none;
  }

  .margin-toggle:checked + .marginnote,
  .margin-toggle:checked + .sidenote {
    display: block;
    float: left;
    left: 1rem;
    clear: both;
    width: 95%;
    margin: 1rem 2.5%;
    vertical-align: baseline;
    position: relative;
  }

  label {
    cursor: pointer;
  }

  div.table-wrapper,
  table {
    width: 85%;
  }

  img {
    width: 100%;
  }
}