heti/_site/index.css

@charset "UTF-8";
/* Project: Heti homepage URL: https://github.com/sivan/heti Author: Sivan [sun.sivan@gmail.com] */
/* normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */
/* Document ========================================================================== */
/** 1. Correct the line height in all browsers. 2. Prevent adjustments of font size after orientation changes in iOS. */
html { line-height: 1.15; /* 1 */ -webkit-text-size-adjust: 100%; /* 2 */ }

/* Sections ========================================================================== */
/** Remove the margin in all browsers. */
body { margin: 0; }

/** Render the `main` element consistently in IE. */
main { display: block; }

/** Correct the font size and margin on `h1` elements within `section` and `article` contexts in Chrome, Firefox, and Safari. */
h1 { font-size: 2em; margin: 0.67em 0; }

/* Grouping content ========================================================================== */
/** 1. Add the correct box sizing in Firefox. 2. Show the overflow in Edge and IE. */
hr { box-sizing: content-box; /* 1 */ height: 0; /* 1 */ overflow: visible; /* 2 */ }

/** 1. Correct the inheritance and scaling of font size in all browsers. 2. Correct the odd `em` font sizing in all browsers. */
pre { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ }

/* Text-level semantics ========================================================================== */
/** Remove the gray background on active links in IE 10. */
a { background-color: transparent; }

/** 1. Remove the bottom border in Chrome 57- 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari. */
abbr[title] { border-bottom: none; /* 1 */ text-decoration: underline; /* 2 */ text-decoration: underline dotted; /* 2 */ }

/** Add the correct font weight in Chrome, Edge, and Safari. */
b, strong { font-weight: bolder; }

/** 1. Correct the inheritance and scaling of font size in all browsers. 2. Correct the odd `em` font sizing in all browsers. */
code, kbd, samp { font-family: monospace, monospace; /* 1 */ font-size: 1em; /* 2 */ }

/** Add the correct font size in all browsers. */
small { font-size: 80%; }

/** Prevent `sub` and `sup` elements from affecting the line height in all browsers. */
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }

sub { bottom: -0.25em; }

sup { top: -0.5em; }

/* Embedded content ========================================================================== */
/** Remove the border on images inside links in IE 10. */
img { border-style: none; }

/* Forms ========================================================================== */
/** 1. Change the font styles in all browsers. 2. Remove the margin in Firefox and Safari. */
button, input, optgroup, select, textarea { font-family: inherit; /* 1 */ font-size: 100%; /* 1 */ line-height: 1.15; /* 1 */ margin: 0; /* 2 */ }

/** Show the overflow in IE. 1. Show the overflow in Edge. */
button, input { /* 1 */ overflow: visible; }

/** Remove the inheritance of text transform in Edge, Firefox, and IE. 1. Remove the inheritance of text transform in Firefox. */
button, select { /* 1 */ text-transform: none; }

/** Correct the inability to style clickable types in iOS and Safari. */
button, [type="button"], [type="reset"], [type="submit"] { -webkit-appearance: button; }

/** Remove the inner border and padding in Firefox. */
button::-moz-focus-inner, [type="button"]::-moz-focus-inner, [type="reset"]::-moz-focus-inner, [type="submit"]::-moz-focus-inner { border-style: none; padding: 0; }

/** Restore the focus styles unset by the previous rule. */
button:-moz-focusring, [type="button"]:-moz-focusring, [type="reset"]:-moz-focusring, [type="submit"]:-moz-focusring { outline: 1px dotted ButtonText; }

/** Correct the padding in Firefox. */
fieldset { padding: 0.35em 0.75em 0.625em; }

/** 1. Correct the text wrapping in Edge and IE. 2. Correct the color inheritance from `fieldset` elements in IE. 3. Remove the padding so developers are not caught out when they zero out `fieldset` elements in all browsers. */
legend { box-sizing: border-box; /* 1 */ color: inherit; /* 2 */ display: table; /* 1 */ max-width: 100%; /* 1 */ padding: 0; /* 3 */ white-space: normal; /* 1 */ }

/** Add the correct vertical alignment in Chrome, Firefox, and Opera. */
progress { vertical-align: baseline; }

/** Remove the default vertical scrollbar in IE 10+. */
textarea { overflow: auto; }

/** 1. Add the correct box sizing in IE 10. 2. Remove the padding in IE 10. */
[type="checkbox"], [type="radio"] { box-sizing: border-box; /* 1 */ padding: 0; /* 2 */ }

/** Correct the cursor style of increment and decrement buttons in Chrome. */
[type="number"]::-webkit-inner-spin-button, [type="number"]::-webkit-outer-spin-button { height: auto; }

/** 1. Correct the odd appearance in Chrome and Safari. 2. Correct the outline style in Safari. */
[type="search"] { -webkit-appearance: textfield; /* 1 */ outline-offset: -2px; /* 2 */ }

/** Remove the inner padding in Chrome and Safari on macOS. */
[type="search"]::-webkit-search-decoration { -webkit-appearance: none; }

/** 1. Correct the inability to style clickable types in iOS and Safari. 2. Change font properties to `inherit` in Safari. */
::-webkit-file-upload-button { -webkit-appearance: button; /* 1 */ font: inherit; /* 2 */ }

/* Interactive ========================================================================== */
/* Add the correct display in Edge, IE 10+, and Firefox. */
details { display: block; }

/* Add the correct display in all browsers. */
summary { display: list-item; }

/* Misc ========================================================================== */
/** Add the correct display in IE 10+. */
template { display: none; }

/** Add the correct display in IE 10. */
[hidden] { display: none; }

/* 简单模拟 css reset */
* { margin: 0; padding: 0; }

ul, ol { list-style: none; }

/* 模拟不知道哪里流传出来的垃圾代码 */
ul, li { list-style: none; }

.container[data-bg-grid="grid-12"] { background-size: 100% 12px; background-image: linear-gradient(transparent 11px, #ededed 1px), linear-gradient(to left, transparent 12px, #ededed, transparent 13px), linear-gradient(to right, transparent 12px, #ededed, transparent 13px); }

.container[data-bg-grid="grid-12"] .heti--vertical { outline: 1px solid #ededed; background-size: 12px 100%; background-image: linear-gradient(to left, transparent 11px, #ededed 1px); }

.container[data-bg-grid="grid-24"] { background-size: 100% 24px; background-image: linear-gradient(transparent 23px, #ededed 1px), linear-gradient(to left, transparent 12px, #ededed, transparent 13px), linear-gradient(to right, transparent 12px, #ededed, transparent 13px); }

.container[data-bg-grid="grid-24"] .heti--vertical { outline: 1px solid #ededed; background-size: 24px 100%; background-image: linear-gradient(to left, transparent 23px, #ededed 1px); }

@media (prefers-color-scheme: dark) { .container[data-bg-grid="grid-12"] { background-image: linear-gradient(transparent 11px, #333333 1px), linear-gradient(to left, transparent 12px, #333333, transparent 13px), linear-gradient(to right, transparent 12px, #333333, transparent 13px); }
  .container[data-bg-grid="grid-12"] .heti--vertical { background-size: 12px 100%; background-image: linear-gradient(to left, transparent 11px, #333333 1px); }
  .container[data-bg-grid="grid-24"] { background-image: linear-gradient(transparent 23px, #333333 1px), linear-gradient(to left, transparent 12px, #333333, transparent 13px), linear-gradient(to right, transparent 12px, #333333, transparent 13px); }
  .container[data-bg-grid="grid-24"] .heti--vertical { background-size: 24px 100%; background-image: linear-gradient(to left, transparent 23px, #333333 1px); } }

@media screen and (min-width: 640px) { .container[data-bg-grid="grid-12"] { background-image: linear-gradient(transparent 11px, #ededed 1px), linear-gradient(to left, transparent 48px, #ededed, transparent 49px), linear-gradient(to right, transparent 48px, rgba(255, 0, 0, 0.4), transparent 49px); }
  .container[data-bg-grid="grid-24"] { background-image: linear-gradient(transparent 23px, #ededed 1px), linear-gradient(to left, transparent 48px, #ededed, transparent 49px), linear-gradient(to right, transparent 48px, rgba(255, 0, 0, 0.4), transparent 49px); } }

@media screen and (min-width: 640px) and (prefers-color-scheme: dark) { .container[data-bg-grid="grid-12"] { background-image: linear-gradient(transparent 11px, #333333 1px), linear-gradient(to left, transparent 48px, #333333, transparent 49px), linear-gradient(to right, transparent 48px, rgba(255, 77, 77, 0.4), transparent 49px); }
  .container[data-bg-grid="grid-24"] { background-image: linear-gradient(transparent 23px, #333333 1px), linear-gradient(to left, transparent 48px, #333333, transparent 49px), linear-gradient(to right, transparent 48px, rgba(255, 77, 77, 0.4), transparent 49px); } }

.panel-list { --bg-color: hsl(240, 100%, 100%); --bg-tap-color: hsl(300, 3%, 94%); --border-color: hsla(0, 0%, 76%, 0.88); --border-inline-start-color: hsl(0, 0%, 76%); --border-inline-end-color: hsl(0, 0%, 76%); --border-block-start-color: hsl(0, 0%, 79%); --border-block-end-color: hsl(0, 0%, 65%); --text-color: hsl(60, 1%, 16%); --box-shadow-color: hsla(0, 0%, 86%, 0.54); --bg-highlight-color-start: hsl(216, 87%, 70%); --bg-highlight-color-end: hsl(215, 93%, 52%); --bg-highlight-tap-color-start: hsl(216, 92%, 65%); --bg-highlight-tap-color-end: hsl(215, 95%, 44%); --border-highlight-color: hsla(216, 90%, 57%, 0.88); --border-highlight-tap-color: hsla(216, 85%, 52%, 0.88); --border-inline-start-highlight-color: hsl(216, 90%, 57%); --border-inline-end-highlight-color: hsl(216, 90%, 57%); --border-inline-start-highlight-tap-color: hsl(216, 85%, 52%); --border-inline-end-highlight-tap-color: hsl(216, 85%, 52%); --border-block-start-highlight-color: hsl(216, 87%, 63%); --border-block-end-highlight-color: hsl(215, 99%, 49%); --border-block-start-highlight-tap-color: hsl(216, 93%, 57%); --border-block-end-highlight-tap-color: hsl(216, 100%, 42%); --text-highlight-color: hsl(0, 0%, 100%); display: inline-flex; margin: 0; padding: 0; list-style-type: none; }

.panel-list--gray { --bg-color: hsl(180, 100%, 100%); --bg-tap-color: hsl(0, 0%, 94%); --border-color: hsla(0, 0%, 72%, 0.88); --border-inline-start-color: hsl(0, 0%, 76%); --border-inline-end-color: hsl(0, 0%, 76%); --border-block-start-color: hsl(0, 0%, 79%); --border-block-end-color: hsl(0, 0%, 65%); --text-color: hsl(0, 0%, 16%); --box-shadow-color: hsla(0, 0%, 86%, 0.54); --bg-highlight-color-start: hsl(225, 3%, 70%); --bg-highlight-color-end: hsl(228, 2%, 58%); --bg-highlight-tap-color-start: hsl(228, 2%, 58%); --bg-highlight-tap-color-end: hsl(240, 3%, 35%); --border-highlight-color: hsla(225, 2%, 64%, 0.88); --border-highlight-tap-color: hsla(228, 2%, 47%, 0.88); --border-inline-start-highlight-color: hsl(240, 3%, 59%); --border-inline-end-highlight-color: hsl(228, 2%, 54%); --border-inline-start-highlight-tap-color: hsl(240, 3%, 39%); --border-inline-end-highlight-tap-color: hsl(228, 3%, 39%); --border-block-start-highlight-color: hsl(240, 3%, 66%); --border-block-end-highlight-color: hsl(228, 2%, 50%); --border-block-start-highlight-tap-color: hsl(228, 2%, 51%); --border-block-end-highlight-tap-color: hsl(228, 4%, 26%); --text-highlight-color: hsl(0, 0%, 92%); }

@media (prefers-color-scheme: dark) { .panel-list { --bg-color: hsl(225, 2%, 40%); --bg-tap-color: hsl(210, 2%, 49%); --border-color: hsla(210, 2%, 33%, 0.88); --border-inline-start-color: hsl(210, 2%, 33%); --border-inline-end-color: hsl(210, 2%, 33%); --border-block-start-color: hsl(225, 2%, 45%); --border-block-end-color: hsl(210, 2%, 40%); --text-color: hsl(0, 0%, 91%); --box-shadow-color: hsla(225, 4%, 21%, 0.54); --bg-highlight-color-start: hsl(216, 77%, 49%); --bg-highlight-color-end: hsl(216, 76%, 45%); --bg-highlight-tap-color-start: hsl(214, 83%, 55%); --bg-highlight-tap-color-end: hsl(215, 74%, 51%); --border-highlight-color: hsla(215, 77%, 47%, 0.88); --border-highlight-tap-color: hsla(215, 79%, 54%, 0.88); --border-inline-start-highlight-color: hsl(215, 77%, 47%); --border-inline-end-highlight-color: hsl(215, 77%, 47%); --border-inline-start-highlight-tap-color: hsl(215, 79%, 54%); --border-inline-end-highlight-tap-color: hsl(215, 79%, 54%); --border-block-start-highlight-color: hsl(216, 76%, 55%); --border-block-end-highlight-color: hsl(216, 76%, 44%); --border-block-start-highlight-tap-color: hsl(215, 84%, 60%); --border-block-end-highlight-tap-color: hsl(215, 74%, 51%); --text-highlight-color: hsl(0, 0%, 100%); }
  .panel-list--gray { --bg-color: hsl(0, 0%, 40%); --bg-tap-color: hsl(0, 0%, 49%); --border-color: hsla(120, 1%, 34%, 0.88); --border-inline-start-color: hsl(0, 0%, 40%); --border-inline-end-color: hsl(360, 0%, 40%); --border-block-start-color: hsl(0, 0%, 46%); --border-block-end-color: hsl(120, 0%, 40%); --text-color: hsl(0, 0%, 91%); --box-shadow-color: hsla(0, 0%, 17%, 0.54); --bg-highlight-color-start: hsl(0, 0%, 60%); --bg-highlight-color-end: hsl(0, 0%, 60%); --bg-highlight-tap-color-start: hsl(0, 0%, 69%); --bg-highlight-tap-color-end: hsl(0, 0%, 69%); --border-highlight-color: hsla(0, 0%, 60%, 0.88); --border-highlight-tap-color: hsla(0, 0%, 69%, 0.88); --border-inline-start-highlight-color: hsl(0, 0%, 60%); --border-inline-end-highlight-color: hsl(0, 0%, 60%); --border-inline-start-highlight-tap-color: hsl(0, 0%, 69%); --border-inline-end-highlight-tap-color: hsl(0, 0%, 69%); --border-block-start-highlight-color: hsl(0, 0%, 64%); --border-block-end-highlight-color: hsl(0, 0%, 60%); --border-block-start-highlight-tap-color: hsl(0, 0%, 73%); --border-block-end-highlight-tap-color: hsl(0, 0%, 69%); --text-highlight-color: hsl(0, 0%, 15%); } }

.panel-list + .panel-list { margin-inline-start: 12px; }

.panel-list label { position: relative; display: block; box-sizing: border-box; height: 20px; padding: 0; padding-inline-start: 12px; padding-inline-end: 12px; border: 1px solid; font-size: 12px; line-height: 18px; text-align: center; user-select: none; background-color: var(--bg-color); border-color: var(--border-color); border-block-start-color: var(--border-block-start-color); border-block-end-color: var(--border-block-end-color); color: var(--text-color); box-shadow: 0 1px 0 var(--box-shadow-color); }

.panel-list label:active { background-color: var(--bg-tap-color); }

.panel-list li { margin-inline-end: -1px; }

.panel-list li:first-child label { border-top-left-radius: 4px; border-bottom-left-radius: 4px; border-inline-start-color: var(--border-inline-start-color); }

.panel-list li:last-child label { border-top-right-radius: 4px; border-bottom-right-radius: 4px; border-inline-end-color: var(--border-inline-end-color); }

.panel-list input { display: none; }

.panel-list input:checked + label { z-index: 1; background-image: linear-gradient(to bottom, var(--bg-highlight-color-start), var(--bg-highlight-color-end)); border-color: var(--border-highlight-color); border-block-start-color: var(--border-block-start-highlight-color); border-block-end-color: var(--border-block-end-highlight-color); color: var(--text-highlight-color); }

.panel-list input:checked + label:active { background-image: linear-gradient(to bottom, var(--bg-highlight-tap-color-start), var(--bg-highlight-tap-color-end)); border-color: var(--border-highlight-tap-color); border-block-start-color: var(--border-block-start-highlight-tap-color); border-block-end-color: var(--border-block-end-highlight-tap-color); }

.anchor { margin-inline-start: 0.25em; }

@media screen and (min-width: 640px) { .article .anchor { position: absolute; left: -1em; width: 1em; margin-inline-start: 0; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-weight: 400; line-height: inherit; text-align: center; opacity: 0; transition: opacity 0.2s linear; }
  .article .anchor:hover { text-decoration: none; border: 0; }
  .article h1, .article h2, .article h3, .article h4, .article h5, .article h6 { position: relative; }
  .article h1:hover .anchor, .article h2:hover .anchor, .article h3:hover .anchor, .article h4:hover .anchor, .article h5:hover .anchor, .article h6:hover .anchor { opacity: 1; } }

.card { position: relative; left: -12px; width: 100%; margin-block-start: 24px; margin-block-end: 48px; padding-block-start: 12px; padding-block-end: 12px; padding-inline-start: 12px; padding-inline-end: 12px; border-radius: 2px; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16); background-color: white; }

.article .card { text-align: left; }

.card > figcaption { display: inline-block; margin-block-start: 16px; padding-block-start: 4px; padding-block-end: 3px; padding-inline-start: 0; padding-inline-end: 72px; line-height: 24px; border-block-start: 1px solid #ededed; }

.card__vertical-container { box-sizing: border-box; width: 100%; height: 30em; border: 1px solid #ededed; overflow: auto; writing-mode: vertical-rl; }

@media screen and (min-width: 640px) { .card { box-sizing: border-box; left: -20%; width: 140%; padding-block-start: 24px; padding-block-end: 24px; padding-inline-start: 32px; padding-inline-end: 32px; } }

@media (prefers-color-scheme: dark) { .card { background-color: #292929; }
  .card > figcaption { border-block-start: 1px solid #333333; }
  .card__vertical-container { border-color: #333333; } }

/** 基础样式 **/
body { font-family: -apple-system, system-ui, "Helvetica Neue", Helvetica, Arial, "Heti Hei", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; background-color: white; }

a { color: #4387f4; text-decoration: none; }

.container { box-sizing: border-box; padding-block-start: 12px; padding-block-end: 72px; padding-inline-start: 12px; padding-inline-end: 12px; }

/** 首页样式 **/
.article { margin-inline-start: auto; margin-inline-end: auto; }

.article__nav ol { margin-block-start: 24px; margin-block-end: 24px; }

/** 控制栏样式 **/
.panel { position: fixed; z-index: 2; right: 14px; top: 14px; display: flex; text-align: right; }

/** 演示区块 **/
.demo { margin-block-start: 24px; margin-block-end: 24px; }

.section { width: 100%; max-height: 85vh; margin-block-start: 12px; margin-block-end: 12px; overflow: auto; }

@media screen and (min-width: 640px) { body { min-width: 640px; background-color: #ededed; }
  .container { box-sizing: border-box; width: 80%; min-width: 640px; max-width: 768px; margin-block-start: 48px; margin-block-end: 72px; margin-inline-start: auto; margin-inline-end: auto; padding-block-start: 48px; padding-block-end: 48px; padding-inline-start: 48px; padding-inline-end: 48px; border-radius: 2px; box-shadow: 0 8px 32px rgba(0, 0, 0, 0.32); background-color: white; }
  .section { max-height: none; overflow: visible; } }

@media screen and (min-width: 900px) { .article__nav { position: relative; z-index: 1; float: right; width: 192px; margin-block-start: -1px; margin-block-end: 12px; margin-inline-start: 32px; margin-inline-end: -16px; padding-block-start: 12px; padding-block-end: 12px; padding-inline-start: 8px; padding-inline-end: 8px; border: 1px solid #ededed; border-radius: 2px; }
  .article__nav ol { margin-block-start: 12px; margin-block-end: 0; }
  .article__nav ol ol { margin-block-start: 0; } }

@media (prefers-color-scheme: dark) { body { background-color: #3d3d3d; }
  a { color: #6b90cc; }
  a:visited { color: #2f5189; }
  .container { background-color: #292929; color: #a3a3a3; }
  .article__nav { border-color: #333333; } }