:root {
  --blue: #3569e9;
  --ink: #222c3d;
  --muted: #768092;
  --line: #e7ebf1;
  --paper: #f6f8fb;
  --serif: Georgia, "Songti SC", "STSong", serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}
body {
  margin: 0;
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-size: 15px;
  line-height: 1.7;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font: inherit;
}
button,
a,
input,
summary {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
a:hover {
  color: var(--blue);
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid #94b2ff;
  outline-offset: 4px;
}
.wrap {
  max-width: 1180px;
  margin: auto;
  padding: 0 24px;
}
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  max-width: 1180px;
  height: 96px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  margin: auto;
  gap: 26px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.brand-mark {
  width: 42px;
  height: 42px;
  background: var(--blue);
  color: #fff;
  display: grid;
  place-items: center;
  border-radius: 13px;
  font-size: 31px;
}
.brand-name {
  font-size: 23px;
  font-weight: 750;
  letter-spacing: 2px;
  line-height: 1.2;
}
.brand-name small {
  display: block;
  font-size: 9px;
  letter-spacing: 2px;
  font-weight: 600;
  color: #8a93a3;
  margin-top: 7px;
}
.brand-tagline {
  font-size: 12px;
  color: #949bab;
  border-left: 1px solid var(--line);
  padding-left: 22px;
}
.main-nav {
  margin-left: auto;
  display: flex;
  gap: 27px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.main-nav a {
  position: relative;
  padding: 35px 0;
}
.main-nav a.active {
  color: var(--blue);
}
.main-nav a.active:after {
  content: "";
  width: 17px;
  height: 3px;
  border-radius: 3px;
  background: var(--blue);
  position: absolute;
  bottom: 18px;
  left: calc(50% - 8px);
}
.search-toggle {
  display: grid;
  place-items: center;
  background: #f2f5fa;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex: none;
}
.menu-toggle {
  display: none;
  border: none;
  background: none;
  font-size: 23px;
}
.eyebrow {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.6px;
  color: var(--blue);
  text-transform: uppercase;
}
.intro {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  min-height: 370px;
  padding: 38px 0 32px;
  gap: 50px;
}
.intro h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 46px;
  letter-spacing: -1px;
  line-height: 1.38;
  margin: 16px 0;
}
.intro h1 span {
  color: var(--blue);
}
.intro p {
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
  margin: 0 0 20px;
}
.text-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
}
.text-link span {
  margin-left: 16px;
}
.intro-art {
  height: 265px;
  position: relative;
  overflow: hidden;
}
.art {
  position: relative;
  height: 100%;
  background: #e9effc;
  overflow: hidden;
  isolation: isolate;
}
.orbit {
  position: absolute;
  width: 210px;
  height: 210px;
  border: 1px solid #b3c6ee;
  border-radius: 50%;
  top: calc(50% - 105px);
  left: calc(50% - 105px);
  transform: scaleY(0.55) rotate(-25deg);
}
.o2 {
  transform: scaleY(0.55) rotate(38deg);
  width: 275px;
  height: 275px;
  top: calc(50% - 137px);
  left: calc(50% - 137px);
  border-color: #d2def6;
}
.o3 {
  transform: scaleY(0.82) rotate(-40deg);
  width: 320px;
  height: 320px;
  top: calc(50% - 160px);
  left: calc(50% - 160px);
  border-color: #d2def6;
}
.planet {
  width: 75px;
  height: 75px;
  border-radius: 50%;
  position: absolute;
  top: calc(50% - 37px);
  left: calc(50% - 37px);
  background: radial-gradient(
    circle at 30% 20%,
    #adcaff 0,
    #3569e9 70%,
    #1d46b9
  );
  box-shadow: 10px 18px 32px #7b9add35;
}
.spark {
  position: absolute;
  top: 35%;
  left: 27%;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #3569e9;
  box-shadow: 0 0 0 5px #3569e910;
}
.s2 {
  top: 65%;
  left: 75%;
  width: 7px;
  height: 7px;
  background: #91ace4;
}
.art-label {
  position: absolute;
  left: 20px;
  bottom: 14px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #7991be;
}
.intro-art .art {
  background: transparent;
}
.intro-art .planet {
  width: 112px;
  height: 112px;
  top: calc(50% - 56px);
  left: calc(50% - 56px);
}
.intro-art .o1 {
  width: 310px;
  height: 310px;
  top: calc(50% - 155px);
  left: calc(50% - 155px);
}
.intro-art .o2 {
  width: 380px;
  height: 380px;
  top: calc(50% - 190px);
  left: calc(50% - 190px);
}
.intro-art .o3 {
  width: 430px;
  height: 430px;
  top: calc(50% - 215px);
  left: calc(50% - 215px);
}
.intro-art .art-label {
  display: none;
}
.intro-caption {
  position: absolute;
  bottom: 8px;
  left: 0;
  width: 100%;
  text-align: center;
  color: #8997b5;
  font-family: Georgia, serif;
  font-style: italic;
  font-size: 12px;
}
.featured {
  background: #fff;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  border-radius: 8px;
  gap: 28px;
  padding: 26px 32px;
  margin-bottom: 44px;
  position: relative;
  overflow: hidden;
}
.featured:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  background: var(--blue);
  width: 3px;
}
.featured-badge {
  width: 65px;
  flex: none;
  font-family: var(--serif);
  color: var(--blue);
  font-size: 19px;
  line-height: 1.45;
  padding: 0 15px 0 0;
  border-right: 1px solid var(--line);
}
.featured h2 {
  font-size: 22px;
  line-height: 1.4;
  margin: 7px 0 8px;
  letter-spacing: 0.1px;
}
.featured p {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 8px;
}
.feature-meta {
  font-size: 10px;
  color: #939bad;
}
.feature-arrow {
  margin-left: auto;
  font-size: 27px;
  color: var(--blue);
  background: #eff4ff;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  flex: none;
}
.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 38px;
  padding-bottom: 64px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 16px;
}
.section-heading h2 {
  font-size: 25px;
  font-family: var(--serif);
  margin: 6px 0 0;
  letter-spacing: 1px;
}
.count-label {
  color: #98a0ae;
  font-size: 11px;
}
.topic-nav {
  display: flex;
  gap: 24px;
  font-size: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  padding: 0 0 12px;
}
.topic-nav a.selected {
  color: var(--blue);
  font-weight: 600;
}
.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.post-card {
  border: 1px solid var(--line);
  background: white;
  border-radius: 7px;
  overflow: hidden;
  transition:
    box-shadow 0.2s,
    transform 0.2s;
}
.post-card:hover {
  box-shadow: 0 9px 28px #1e3d7210;
  transform: translateY(-3px);
}
.card-art {
  display: block;
  height: 166px;
}
.card-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-body {
  padding: 20px;
}
.card-body h3 {
  font-size: 17px;
  line-height: 1.6;
  margin: 8px 0 10px;
  letter-spacing: 0.2px;
}
.card-body p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
  margin: 0 0 20px;
}
.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: #929aab;
  border-top: 1px solid #f1f3f6;
  padding-top: 14px;
}
.card-meta a {
  color: #607497;
}
.art-tools {
  background: #e8f2ee;
}
.art-tools .planet {
  background: radial-gradient(circle at 30% 20%, #b9e0d1, #459c80 70%, #286b59);
}
.art-tools .orbit {
  border-color: #b8d7cd;
}
.art-tools .spark {
  background: #459c80;
}
.art-tools .art-label {
  color: #7fa497;
}
.art-knowledge {
  background: #eeebf7;
}
.art-knowledge .planet {
  background: radial-gradient(circle at 30% 20%, #d3c7ef, #8c75bc 70%, #5b4889);
}
.art-knowledge .orbit {
  border-color: #d4c8e9;
}
.art-knowledge .spark {
  background: #8c75bc;
}
.art-knowledge .art-label {
  color: #a194b9;
}
.sidebar-about {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 25px;
}
.mini-star {
  display: block;
  color: var(--blue);
  font-size: 32px;
  margin-bottom: 15px;
  line-height: 1;
}
.sidebar h3 {
  font-size: 16px;
  font-weight: 650;
  margin: 9px 0 13px;
}
.sidebar-about p {
  font-size: 12px;
  line-height: 1.95;
  color: var(--muted);
  margin-bottom: 18px;
}
.sidebar-section {
  padding: 25px 0 0;
}
.sidebar-section > h3 {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin: 0 0 4px;
}
.sidebar-section > h3 > span {
  float: right;
  color: #9faabe;
}
.start-link {
  display: flex;
  gap: 13px;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}
.start-link > span {
  color: #bac4d7;
  font-size: 15px;
  font-family: Georgia, serif;
}
.start-link small {
  display: block;
  font-size: 10px;
  color: #919aab;
  padding-top: 5px;
}
.start-link b {
  font-weight: 400;
  color: #95a0b5;
  margin-left: auto;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding-top: 15px;
}
.tags a {
  border: 1px solid var(--line);
  background: #fff;
  padding: 5px 11px;
  border-radius: 3px;
  font-size: 11px;
  color: #69758b;
}
.rss-box {
  margin-top: 27px;
  border-radius: 7px;
  padding: 25px;
  background: #ecf1fb;
  border: 1px solid #e0e8f8;
}
.rss-box > span {
  font-size: 22px;
  color: var(--blue);
}
.rss-box p {
  font-size: 12px;
  color: #7d8cac;
}
.rss-box a {
  font-size: 12px;
  color: var(--blue);
  font-weight: 600;
}
.site-footer {
  background: #fff;
  border-top: 1px solid var(--line);
}
.footer-inner,
.footer-bottom {
  max-width: 1132px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-inner {
  padding: 36px 0;
}
.footer-brand {
  font-size: 20px;
  font-weight: 700;
}
.footer-inner p {
  font-size: 12px;
  color: #939aaa;
  margin: 7px 0 0;
}
.footer-links {
  display: flex;
  gap: 26px;
  font-size: 12px;
  color: #788296;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 17px 0;
  color: #a0a7b5;
  font-size: 10px;
}
.breadcrumb {
  display: flex;
  gap: 12px;
  align-items: center;
  color: #919aad;
  font-size: 11px;
  padding: 25px 0;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 235px;
  gap: 32px;
  align-items: start;
}
.article-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 38px 40px;
}
.article-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 26px;
  margin-bottom: 28px;
}
.article-header h1 {
  font-size: 30px;
  line-height: 1.5;
  letter-spacing: 0.3px;
  margin: 13px 0 18px;
}
.article-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  color: #919aac;
  font-size: 11px;
}
.author-icon {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  background: #eef3fe;
  border-radius: 50%;
  color: var(--blue);
  font-size: 16px;
}
.article-deck {
  font-size: 14px;
  line-height: 1.9;
  color: #7e899c;
  margin: 20px 0 0;
}
.article-tags {
  display: flex;
  gap: 12px;
  margin-top: 17px;
  flex-wrap: wrap;
  font-size: 11px;
  color: #6e85b5;
}
.article-body {
  font-size: 15px;
  line-height: 2;
  color: #43516a;
  overflow-wrap: anywhere;
}
.article-body h2 {
  position: relative;
  color: var(--ink);
  font-size: 21px;
  margin: 34px 0 18px;
  padding: 0 0 10px 14px;
  border-bottom: 1px solid var(--line);
  line-height: 1.6;
}
.article-body h2:before {
  content: "";
  width: 3px;
  height: 20px;
  position: absolute;
  left: 0;
  top: 6px;
  background: var(--blue);
  border-radius: 3px;
}
.article-body h3 {
  font-size: 17px;
  color: #2f3e55;
  margin: 27px 0 12px;
}
.article-body p {
  margin: 14px 0;
}
.article-body a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-color: #bccdf3;
  text-underline-offset: 4px;
}
.article-body blockquote {
  margin: 24px 0;
  padding: 12px 20px;
  background: #f2f6fe;
  border-left: 3px solid var(--blue);
  font-size: 14px;
  border-radius: 0 4px 4px 0;
}
.article-body blockquote p {
  margin: 5px 0;
}
.article-body ul,
.article-body ol {
  padding-left: 22px;
}
.article-body li {
  padding: 3px 0;
}
.article-body strong {
  color: #263951;
  font-weight: 600;
}
.table-scroll {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--line);
  border-radius: 5px;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  line-height: 1.9;
}
.article-body th {
  background: #f4f7fc;
  color: #415577;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
.article-body th,
.article-body td {
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  min-width: 100px;
}
.article-body tr:last-child td {
  border-bottom: none;
}
.article-body tr:nth-child(even) {
  background: #fafbfd;
}
.article-body pre {
  background: #17253c;
  color: #dce7fa;
  border-radius: 6px;
  padding: 18px;
  overflow: auto;
  font-size: 12px;
  line-height: 1.7;
}
.article-body code {
  font-size: 13px;
  background: #edf1f7;
  border-radius: 3px;
  padding: 2px 5px;
}
.article-body pre code {
  background: none;
  padding: 0;
  color: inherit;
}
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
}
.article-sidebar {
  position: sticky;
  top: 125px;
}
.toc-box {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 22px;
  background: #fff;
}
.toc-box h3 {
  font-size: 17px;
  margin: 7px 0 18px;
}
.toc-box nav {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--line);
}
.toc-box nav a {
  font-size: 12px;
  color: #8390a5;
  padding: 7px 0 7px 14px;
  line-height: 1.65;
  border-left: 2px solid transparent;
  margin-left: -1px;
}
.toc-box nav a.current,
.toc-box nav a:hover {
  color: var(--blue);
  border-color: var(--blue);
}
.toc-box nav a.toc-sub {
  padding-left: 25px;
  font-size: 11px;
}
.markdown-link {
  display: block;
  font-size: 10px;
  color: #91a0b6;
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
.reading-note {
  padding: 28px 20px;
}
.reading-note > span {
  font-size: 28px;
  color: #c3d1ee;
}
.reading-note p {
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.7;
  color: #8f9bb1;
}
.reading-note a {
  font-size: 11px;
  color: #7c94c1;
}
.article-end {
  margin: 35px 0 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 15px;
  align-items: center;
  font-size: 11px;
  color: #96a4bc;
}
.share-button {
  background: #f0f4fc;
  border: none;
  border-radius: 4px;
  color: var(--blue);
  padding: 8px 12px;
  font-size: 11px;
}
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 12px;
}
.post-navigation small {
  display: block;
  color: #a5adbb;
  font-size: 10px;
  margin-bottom: 7px;
}
.post-navigation > div:last-child {
  text-align: right;
}
.related {
  padding: 45px 0 60px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.page-main {
  max-width: 900px;
  margin: 48px auto 70px;
}
.search-main {
  min-height: 65vh;
  padding-top: 48px;
  padding-bottom: 60px;
}
.search-main h1 {
  font-family: var(--serif);
  font-size: 34px;
  margin: 10px 0 26px;
}
.search-form {
  max-width: 680px;
}
.search-form > div {
  display: flex;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}
.search-form input {
  border: 0;
  background: none;
  padding: 17px 20px;
  min-width: 0;
  flex: 1;
  color: var(--ink);
  font-size: 14px;
}
.search-form button {
  background: var(--blue);
  border: 0;
  color: white;
  margin: 6px;
  border-radius: 4px;
  padding: 8px 24px;
  font-size: 13px;
}
#search-status {
  font-size: 13px;
  color: var(--muted);
  margin: 20px 0 28px;
}
.empty {
  padding: 40px;
  color: var(--muted);
}
.error-page {
  min-height: 60vh;
  padding-top: 90px;
}
.error-page h1 {
  font-size: 30px;
  font-family: var(--serif);
  color: var(--ink);
}
.back-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #6f83a6;
  width: 36px;
  height: 36px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.back-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.skip-link {
  position: absolute;
  top: -100px;
  padding: 12px;
  background: white;
  z-index: 99;
}
.skip-link:focus {
  top: 0;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
.mobile-toc {
  display: none;
}
@media (min-width: 1400px) {
  .intro {
    min-height: 390px;
  }
}
@media (max-width: 1050px) {
  .brand-tagline {
    display: none;
  }
  .main-nav {
    gap: 22px;
  }
  .content-layout {
    grid-template-columns: minmax(0, 1fr) 235px;
    gap: 25px;
  }
  .article-layout {
    grid-template-columns: minmax(0, 1fr) 210px;
    gap: 24px;
  }
  .article-panel {
    padding: 28px;
  }
  .footer-inner,
  .footer-bottom {
    margin: 0 24px;
  }
  .intro h1 {
    font-size: 42px;
  }
}
@media (max-width: 800px) {
  .header-inner {
    height: 78px;
    gap: 20px;
  }
  .main-nav {
    gap: 17px;
    font-size: 12px;
  }
  .main-nav a {
    padding: 27px 0;
  }
  .main-nav a.active:after {
    bottom: 12px;
  }
  .brand-name {
    font-size: 20px;
  }
  .brand-mark {
    width: 36px;
    height: 36px;
  }
  .content-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .sidebar-section {
    padding-top: 0;
  }
  .rss-box {
    margin: 0;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .mobile-toc {
    display: block;
    border: 1px solid var(--line);
    padding: 12px 16px;
    margin-bottom: 25px;
    background: #f7f9fd;
    border-radius: 5px;
    color: #6c7f9f;
    font-size: 12px;
  }
  .mobile-toc summary {
    cursor: pointer;
    font-weight: 600;
  }
  .mobile-toc a {
    display: block;
    padding: 7px 0;
  }
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .intro {
    gap: 10px;
  }
  .intro h1 {
    font-size: 36px;
  }
  .featured {
    padding: 23px;
    gap: 20px;
  }
  .featured h2 {
    font-size: 19px;
  }
  .intro-art {
    height: 240px;
  }
  .footer-links {
    gap: 18px;
  }
}
@media (max-width: 600px) {
  .wrap {
    padding: 0 20px;
  }
  .header-inner {
    height: 72px;
    padding: 0 20px;
    gap: 16px;
  }
  .brand-name {
    font-size: 19px;
  }
  .brand-name small {
    font-size: 8px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 25px;
    border-radius: 10px;
  }
  .menu-toggle {
    display: block;
    margin-left: auto;
  }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    display: none;
    padding: 18px 20px;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 10px;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 7px;
    font-size: 14px;
  }
  .main-nav a.active:after {
    display: none;
  }
  .search-toggle {
    width: 32px;
    height: 32px;
  }
  .intro {
    grid-template-columns: 1fr;
    position: relative;
    min-height: 340px;
    padding: 35px 0 25px;
  }
  .intro > div:first-child {
    z-index: 2;
  }
  .intro h1 {
    font-size: 35px;
    line-height: 1.4;
    margin: 15px 0;
  }
  .intro p {
    font-size: 12px;
    max-width: 230px;
  }
  .intro-art {
    position: absolute;
    right: -20px;
    top: 70px;
    width: 170px;
    height: 230px;
    opacity: 0.35;
  }
  .intro-art .planet {
    width: 70px;
    height: 70px;
    top: calc(50% - 35px);
    left: calc(50% - 35px);
  }
  .intro-caption {
    display: none;
  }
  .featured {
    padding: 20px 19px;
    margin-bottom: 33px;
    gap: 15px;
  }
  .featured-badge {
    font-size: 16px;
    width: 45px;
    padding-right: 10px;
  }
  .featured h2 {
    font-size: 17px;
  }
  .featured p {
    display: none;
  }
  .featured .eyebrow {
    font-size: 9px;
    letter-spacing: 1px;
  }
  .feature-arrow {
    display: none;
  }
  .feature-meta {
    font-size: 9px;
  }
  .section-heading h2 {
    font-size: 23px;
  }
  .topic-nav {
    gap: 21px;
    font-size: 11px;
  }
  .post-grid,
  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .card-art {
    height: 180px;
  }
  .card-body {
    padding: 20px 22px;
  }
  .card-body h3 {
    font-size: 18px;
  }
  .card-body p {
    font-size: 12px;
  }
  .sidebar {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .sidebar-about {
    padding: 24px;
  }
  .sidebar-section:last-of-type {
    display: none;
  }
  .content-layout {
    padding-bottom: 40px;
  }
  .footer-inner {
    align-items: start;
    flex-direction: column;
    gap: 22px;
    padding: 28px 0;
    margin: 0 20px;
  }
  .footer-bottom {
    margin: 0 20px;
    font-size: 9px;
    gap: 20px;
  }
  .footer-bottom > span:last-child {
    display: none;
  }
  .footer-links {
    font-size: 11px;
    gap: 22px;
  }
  .article-main {
    padding: 0 14px;
  }
  .breadcrumb {
    font-size: 10px;
    padding: 18px 6px;
    gap: 9px;
  }
  .article-panel {
    padding: 25px 21px;
  }
  .article-header h1 {
    font-size: 24px;
    margin: 12px 0 16px;
  }
  .article-meta {
    font-size: 10px;
    gap: 7px;
  }
  .article-deck {
    font-size: 12px;
  }
  .article-body {
    font-size: 14px;
    line-height: 1.95;
  }
  .article-body h2 {
    font-size: 19px;
    margin-top: 28px;
  }
  .article-body h3 {
    font-size: 16px;
  }
  .article-body th,
  .article-body td {
    padding: 10px;
    min-width: 100px;
  }
  .article-end {
    align-items: start;
    flex-direction: column;
  }
  .related {
    padding: 34px 6px 40px;
  }
  .page-main {
    margin: 24px auto 40px;
  }
  .search-main {
    padding-top: 32px;
    padding-bottom: 40px;
  }
  .search-form input {
    padding: 14px 13px;
    font-size: 12px;
  }
  .search-form button {
    padding: 8px 15px;
  }
  .back-top {
    bottom: 16px;
    right: 14px;
  }
  .error-page {
    padding-top: 65px;
  }
  .error-page h1 {
    font-size: 25px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
}
@media print {
  .site-header,
  .site-footer,
  .article-sidebar,
  .related,
  .article-end,
  .back-top,
  .mobile-toc {
    display: none;
  }
  .article-layout {
    display: block;
  }
  .article-panel {
    border: 0;
    padding: 0;
  }
  .article-body {
    color: #000;
  }
  .article-main {
    max-width: none;
  }
}
/* Keep wide comparison tables inside the article on small screens. */
.article-panel,
.content-layout > section,
.article-layout > article {
  min-width: 0;
}