:root {
  --width: 1180px;
  --font-main: ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  --font-secondary: ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  --font-scale: 1.06em;
  
  /* Concept: Artemide Eclisse Amber in Jungle Night */
  --background-color: #091a15;
  --panel-color: #102620;
  --surface-border: #1a3c32;
  --heading-color: #f2faf6;
  --text-color: #d3e7de;
  --muted-color: #79a595;
  --link-color: #ff7222;
  --link-hover-color: #ff9455;
  --visited-color: #de5a10;
  --blockquote-color: #d3e7de;
  --tag-color: #14322a;
  --tag-border-color: #1f4a3e;
  --tag-text-color: #ddf3ea;
  --tag-hover-color: #ff7222;
  --tag-hover-text-color: #091a15;
  --accent-glow: rgba(255, 114, 34, 0.38);
  
  color-scheme: dark;
}

body {
  margin: 0 auto;
  max-width: var(--width);
  padding: clamp(1.25rem, 4vw, 3.75rem);
  min-height: 100vh;
  line-height: 1.62;
  background-color: var(--background-color);
  color: var(--text-color);
}

body > header,
body > main,
body > footer {
  width: 100%;
}

body > header {
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.site-heading {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.site-heading .title {
  text-decoration: none;
}

.site-heading .title h1 {
  display: inline;
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.25rem);
  letter-spacing: -0.04em;
  color: var(--heading-color);
}

.site-heading span {
  color: var(--muted-color);
  font-size: 0.95rem;
  font-style: italic;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.25rem;
}

nav a {
  margin: 0;
  font-size: 1.12rem;
  color: var(--link-color);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.15s ease;
}

nav a:hover {
  color: var(--link-hover-color);
  text-decoration: underline;
  text-shadow: 0 0 10px var(--accent-glow);
}

.home-intro {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.home-intro h1,
.list-header h1,
.article-header h1 {
  letter-spacing: -0.035em;
  color: var(--heading-color);
}

.home-intro h1 {
  margin-bottom: 0.4rem;
  font-size: clamp(2rem, 4vw, 2.35rem);
  line-height: 1.18;
}

.home-intro p,
.list-header p {
  color: var(--muted-color);
  margin-top: 0;
  font-size: 1.15rem;
}

.archive-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 360px);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.post-archive {
  min-width: 0;
}

ul.blog-posts {
  margin: 0;
  list-style: none;
  padding: 0;
}

ul.blog-posts li {
  display: grid;
  grid-template-columns: 8.75rem minmax(0, 1fr);
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 0.65rem;
}

ul.blog-posts li time {
  color: var(--text-color);
  font-family: var(--font-secondary);
  font-size: 1rem;
  font-style: italic;
  white-space: nowrap;
  opacity: 0.9;
}

ul.blog-posts li a {
  font-size: 1.12rem;
  color: var(--link-color);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
  transition: all 0.15s ease;
}

ul.blog-posts li a:hover {
  color: var(--link-hover-color);
  text-shadow: 0 0 10px var(--accent-glow);
}

ul.blog-posts li a:visited {
  color: var(--visited-color);
}

.tag-sidebar {
  position: sticky;
  top: 1.5rem;
}

.tag-sidebar h2 {
  margin: 0 0 0.9rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted-color);
}

.tag-cloud,
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.taxonomy-directory {
  max-width: 820px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  background: var(--tag-color);
  border: 1px solid var(--tag-border-color);
  color: var(--tag-text-color);
  line-height: 1.1;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.tag:visited {
  color: var(--tag-text-color);
}

.tag:hover {
  background: var(--tag-hover-color);
  border-color: var(--tag-hover-color);
  color: var(--tag-hover-text-color);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--accent-glow);
}

.tag-count {
  font-size: 0.75em;
  opacity: 0.8;
  font-weight: 600;
}

.list-header {
  margin-bottom: 2rem;
}

.filter-note {
  font-size: 0.9rem;
}

.filter-note a {
  color: var(--link-color);
}

.article {
  max-width: 780px;
  margin: 0 auto;
}

.article-header {
  margin-bottom: 2rem;
}

.article-header h1 {
  margin-bottom: 0.55rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.14;
}

.article-header time {
  display: block;
  margin-bottom: 1rem;
  color: var(--muted-color);
  font-family: var(--font-secondary);
  font-style: italic;
}

.article-cover {
  width: 100%;
  max-height: 440px;
  margin-bottom: 2rem;
  border-radius: 0.35rem;
  object-fit: cover;
}

.article-content {
  overflow-wrap: anywhere;
}

.article-content h2,
.article-content h3 {
  margin-top: 2em;
  color: var(--heading-color);
}

.article-content a {
  color: var(--link-color);
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

.article-content a:hover {
  color: var(--link-hover-color);
  text-shadow: 0 0 8px var(--accent-glow);
}

.article-content svg {
  max-width: 100%;
  height: auto;
}

.article-content table {
  display: block;
  overflow-x: auto;
}

.article-content iframe {
  max-width: 100%;
}

blockquote {
  border-left: 3px solid var(--link-color);
  background: var(--panel-color);
  color: var(--text-color);
  border-radius: 0 8px 8px 0;
  margin: 1.5em 0;
  padding: 0.9rem 1.4rem;
  font-style: italic;
  box-shadow: inset 4px 0 12px rgba(255, 114, 34, 0.12);
}

.highlight,
.code {
  background: #05100d;
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 0.5rem;
  margin: 1.5em 0;
}

.highlight pre,
.code pre {
  padding: 0.75rem;
  margin: 0;
}

.post-navigator {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 3rem 0;
  padding: 1.2rem 0;
  border-top: 1px dashed var(--surface-border);
  border-bottom: 1px dashed var(--surface-border);
}

.post-navigator a {
  color: var(--link-color);
  text-decoration: none;
  font-size: 0.95rem;
}

.post-navigator a:hover {
  text-decoration: underline;
}

.comments {
  margin-top: 4rem;
}

footer {
  margin-top: 4rem;
  color: var(--muted-color);
  text-align: left;
  border-top: 1px solid var(--surface-border);
  padding-top: 2rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.social-links a {
  color: var(--link-color);
  text-decoration: none;
}

.social-links a:hover {
  text-decoration: underline;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 800px) {
  .archive-layout {
    grid-template-columns: 1fr;
  }

  .tag-sidebar {
    position: static;
    padding-top: 1.5rem;
    border-top: 1px dashed var(--surface-border);
  }
}

@media (max-width: 560px) {
  .site-heading {
    display: block;
  }

  .site-heading span {
    display: block;
    margin-top: 0.25rem;
  }

  ul.blog-posts li {
    display: block;
    margin-bottom: 1rem;
  }

  ul.blog-posts li time {
    display: block;
    margin-bottom: 0.15rem;
    font-size: 0.84rem;
  }
}

.plotly {
  width: 100%;
  max-width: 100%;
  margin: 1.75rem 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  background-color: #ffffff;
}