/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
  display: block;
}

body {
  line-height: 1;
}

ol, ul {
  list-style: none;
}

blockquote, q {
  quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
  content: "";
  content: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  vertical-align: middle;
}

body {
  color: #212529;
  line-height: 1.5;
  font-family: "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.05em;
}

.h1, .h2, .h3, .h4 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.h1 {
  font-size: 40px;
}

.h2 {
  font-size: 28px;
}

.h3 {
  font-size: 24px;
}

.h4 {
  font-size: 20px;
}

.header {
  background: url("https://raw.githubusercontent.com/hexschool/2022-web-layout-training/refs/heads/main/2025-week1/hero.png") no-repeat center/cover;
  text-align: center;
  color: #ffffff;
  padding: 151px 0;
}
.header .h2 {
  margin-top: 16px;
}

.container {
  max-width: 856px;
  margin: 0 auto;
}

.card {
  padding-bottom: 48px;
  border-bottom: 1px solid #dee2e6;
}
.card .card-title {
  margin-bottom: 24px;
}

.quote {
  background: #f5fee7;
  text-align: center;
  padding: 32px;
  margin-top: 64px;
}
.quote .h4 {
  color: #57a203;
  margin-bottom: 12px;
}
.quote p {
  margin-top: 4px;
}

.intro {
  margin-top: 48px;
}
.intro-img {
  max-width: 1076px;
  margin: 0 auto;
}
.intro-content {
  margin-top: 24px;
}
.intro-content .h4 {
  color: #57a203;
}
.intro-content p {
  margin-top: 16px;
}

.history {
  margin-top: 48px;
}
.history ol {
  list-style-type: disc;
  margin-left: 24px;
}
.history ol li {
  margin-top: 12px;
}
.history ol li span {
  margin-left: 8px;
  padding-left: 8px;
  border-left: 1px solid #212529;
}

.concept {
  margin-top: 48px;
}
.concept li {
  border-left: 3px solid #dee2e6;
  padding-left: 12px;
  margin-top: 12px;
}

.story {
  margin-top: 48px;
}
.story a {
  display: inline-block;
  color: #57a203;
  text-decoration: none;
  padding: 8px 0;
}
.story a i {
  font-size: 15px;
}
.story a span {
  font-weight: 500;
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 1px solid #57a203;
}
.story a:hover {
  color: #477a11;
}
.story a:focus span {
  border-bottom: 2px solid #477a11;
}

.footer {
  text-align: center;
  margin-top: 64px;
  padding: 64px 0;
  background: #f8f9fa;
}
.footer p {
  font-size: 14px;
  color: #6c757d;
}
.footer p:not(:first-child) {
  margin-top: 4px;
}