:root {
  color-scheme: dark;

  --bg-root: #0a0a0a;
  --bg-panel: #111;
  --bg-panel-light: #161616;
  --line-soft: #242424;
  --line-strong: #343434;
  --text-main: #ececec;
  --text-strong: #f7f7f7;
  --text-muted: #c2c2c2;
  --text-dim: #8a8a8a;
  --accent: #dedede;
  --container: 860px;
  --reading-measure: 36em;
  --t-fast: 160ms;
  --t-mid: 240ms;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --glow-cyan: rgba(86, 182, 194, 0.28);
  --glow-blue: rgba(97, 175, 239, 0.24);
  --select-bg: rgba(86, 182, 194, 0.4);
  --select-text: #0a0a0a;
}

@keyframes fade-up-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

* {
  box-sizing: border-box;
  font-family: 'IBM Plex Sans', 'IBM Plex Sans SC', sans-serif;
  text-rendering: optimizeLegibility;
}

html {
  min-height: 100%;
  color: var(--text-main);
  font-size: 19px;
  line-height: 1.8;
  background-color: var(--bg-root);
}

html::selection {
  background-color: var(--select-bg);
  color: var(--select-text);
}

body {
  margin: 0;
}

body ::selection {
  background-color: var(--select-bg);
  color: var(--select-text);
}

.site-shell {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3.1rem 1.4rem 3.2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.site-header {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.site-title {
  display: inline-block;
  color: var(--text-strong);
  text-decoration: none;
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0;
  transition: color var(--t-fast) ease, transform var(--t-mid) var(--ease-out), text-shadow var(--t-mid) ease;
}

.site-title:hover {
  color: #fff;
  transform: translateY(-2px);
  text-shadow: 0 0 16px rgba(255, 255, 255, 0.12), 0 0 32px rgba(86, 182, 194, 0.2), 0 0 48px rgba(97, 175, 239, 0.12);
}

.site-motto {
  display: inline-block;
  margin: -0.4rem 0 0 0;
  color: var(--text-muted);
  font-size: clamp(0.9rem, 1.8vw, 1.1rem);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.5;
  transition: color var(--t-fast) ease, transform var(--t-mid) var(--ease-out);
}

.site-motto:hover {
  color: var(--text-main);
  transform: translateY(-1px);
}

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

.site-nav a {
  position: relative;
  isolation: isolate;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.35rem;
  transition: color var(--t-fast) ease, background-color var(--t-fast) ease, transform var(--t-mid) var(--ease-out), box-shadow var(--t-mid) ease;
}

.site-nav a::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 5px;
  background: linear-gradient(120deg, var(--glow-cyan), var(--glow-blue));
  filter: blur(10px);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--t-mid) ease;
}

.site-nav a.active,
.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text-strong);
  background: rgba(86, 182, 194, 0.12);
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(86, 182, 194, 0.32);
}

.site-nav a.active::before,
.site-nav a:hover::before,
.site-nav a:focus-visible::before {
  opacity: 0.5;
}

.site-main {
  padding-top: 2rem;
  border-top: 1px solid var(--line-soft);
}

h1,
h2,
h3,
h4,
h5 {
  color: var(--text-strong);
  line-height: 1.25;
  margin: 0;
  font-weight: 560;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4.3vw, 3.2rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.8rem;
}

h2 {
  font-size: clamp(1.25rem, 2.6vw, 1.8rem);
  margin-bottom: 0.65rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.55rem;
}

h4 {
  font-size: 1.1rem;
  margin-bottom: 0.55rem;
}

h5 {
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

p,
li,
blockquote,
figcaption {
  color: var(--text-muted);
}

b,
strong {
  color: var(--text-main);
}

a {
  color: var(--accent);
  text-decoration-color: rgba(100, 100, 100, 0.6);
  text-underline-offset: 0.25em;
  transition: color var(--t-fast) ease, text-decoration-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

a:hover {
  color: #fff;
  text-decoration-color: #888;
}

a:focus-visible {
  outline: 2px solid #616161;
  outline-offset: 2px;
  border-radius: 2px;
}

kbd {
  background-color: var(--bg-panel);
  border: 1px solid var(--line-strong);
  color: var(--text-main);
  display: inline-block;
  font-family: "IBM Plex Mono", "JetBrains Mono", "Menlo", monospace;
  font-size: 0.85em;
  padding: 0.2em 0.4em;
}

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-soft) 10%, var(--line-soft) 90%, transparent);
  margin-top: 2.4rem;
  margin-bottom: 2.4rem;
}

pre,
pre code,
pre code * {
  font-family: "IBM Plex Mono", "JetBrains Mono", "Menlo", monospace;
}

pre > code::before {
  content: attr(class);
  position: absolute;
  top: 0;
  left: 0;
  font-size: 11px;
  background: var(--line-strong);
  color: var(--text-main);
  padding: 2px 8px;
  border-radius: 0;
  opacity: 0.8;
}

main pre {
  position: relative;
  border: 1px solid var(--line-soft);
  border-top-color: var(--line-soft);
  border-bottom-color: var(--line-soft);
  padding: 1.1rem;
  overflow-x: auto;
  background: var(--bg-panel-light);
  transition: border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

main pre:hover {
  border-color: var(--line-strong);
  background-color: var(--bg-panel);
}

main pre::-webkit-scrollbar {
  height: 8px;
}

main pre::-webkit-scrollbar-track {
  background: var(--bg-panel);
}

main pre::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 4px;
}

main pre::-webkit-scrollbar-thumb:hover {
  background: #444;
}

blockquote {
  margin: 1.5rem 0;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--glow-cyan);
  background-color: rgba(86, 182, 194, 0.06);
  transition: background-color var(--t-fast) ease, border-color var(--t-fast) ease;
}

blockquote:hover {
  background-color: rgba(86, 182, 194, 0.09);
  border-color: var(--glow-cyan);
}

.site-footer {
  margin-top: 2.4rem;
  color: var(--text-dim);
}

.site-footer-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-soft) 10%, var(--line-soft) 90%, transparent);
  margin-bottom: 1.2rem;
}

.site-footer-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.site-footer-badge h5 {
  color: var(--text-dim);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
}

.small {
  font-size: 0.84em;
}

.block {
  border: 1px dotted var(--line-strong);
  padding: 0.35rem 0.8rem;
  margin: 0;
}

.wave {
  color: var(--text-main);
  text-shadow: none;
}

@media (max-width: 760px) {
  html {
    font-size: 17px;
  }

  .site-shell {
    padding: 2rem 1rem 2.4rem;
    gap: 1.6rem;
  }

  .site-nav {
    gap: 0.4rem;
  }

  .site-nav a {
    letter-spacing: 0.06em;
    font-size: 0.75rem;
    padding: 0.3rem 0.4rem;
  }

  .post-list {
    gap: 1.8rem;
  }

  .post-description {
    font-size: 0.92rem;
    line-height: 1.72;
    margin-top: 0.6rem;
  }

  .post-page > header {
    gap: 0.7rem;
  }

  main pre {
    padding: 0.9rem;
    font-size: 0.9rem;
  }

  table {
    font-size: 0.9rem;
  }

  table th,
  table td {
    padding: 0.6rem;
  }
}

.blog-index {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  animation: fade-up-in 480ms var(--ease-out) both;
}

.blog-index > header {
  margin-bottom: 0.5rem;
}

.blog-index > header h1 {
  margin-bottom: 0;
}

.blog-intro {
  color: var(--text-muted);
  line-height: 1.88;
  max-width: var(--reading-measure);
  margin-inline: auto;
  margin-bottom: 0.5rem;
}

.tag-description {
  color: var(--text-muted);
  line-height: 1.78;
  max-width: var(--reading-measure);
  margin-top: 0.7rem;
  margin-bottom: 0.25rem;
  padding-left: 0.7rem;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  font-style: italic;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
  padding-top: 0.8rem;
  max-width: var(--reading-measure);
  margin-inline: auto;
  width: 100%;
}

.tag {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--line-soft);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease, background-color var(--t-fast) ease, transform var(--t-mid) var(--ease-out), box-shadow var(--t-mid) ease;
}

.tag::before {
  content: "";
  position: absolute;
  inset: -3px;
  background: linear-gradient(120deg, var(--glow-cyan), var(--glow-blue));
  filter: blur(10px);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--t-mid) ease;
}

.tag:hover,
.tag:focus-visible {
  color: var(--text-strong);
  border-color: var(--glow-cyan);
  background-color: rgba(86, 182, 194, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(86, 182, 194, 0.2), 0 0 0 1px rgba(86, 182, 194, 0.32);
}

.tag:hover::before,
.tag:focus-visible::before {
  opacity: 0.5;
}

.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  padding-top: 0.6rem;
  max-width: var(--reading-measure);
  margin-inline: auto;
  width: 100%;
}

.tag-grid-item {
  margin: 0;
  opacity: 0;
  transform: translateY(6px);
  animation: fade-up-in 420ms var(--ease-out) both;
}

.post-item {
  border-top: 1px solid var(--line-soft);
  padding-top: 1.6rem;
  padding-left: 1rem;
  margin-left: -1rem;
  transition: border-color var(--t-fast) ease, padding-left var(--t-fast) ease, margin-left var(--t-fast) ease;
  opacity: 0;
  transform: translateY(6px);
  animation: fade-up-in 420ms var(--ease-out) both;
}

.post-item:hover {
  border-color: var(--line-strong);
  padding-left: 1.4rem;
  margin-left: -1.4rem;
}

.post-item:first-of-type {
  margin-top: 0.6rem;
}

.post-link {
  position: relative;
  isolation: isolate;

  display: inline-block;
  margin: 0.65rem 0 0.85rem;
  padding: 0 0.25rem;
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  text-decoration: none;
  transition: color var(--t-fast) ease, transform var(--t-mid) var(--ease-out), text-shadow var(--t-mid) ease, background-color var(--t-fast) ease;
}

.post-link::before {
  content: "";
  position: absolute;
  inset: -3px -6px;
  border-radius: 3px;
  background: radial-gradient(circle at 50% 60%, rgba(86, 182, 194, 0.26), rgba(86, 182, 194, 0));
  filter: blur(10px);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--t-mid) ease;
}

.post-link:hover {
  color: var(--text-main);
  transform: translateY(-1px);
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.08), 0 0 20px rgba(86, 182, 194, 0.16);
  background-color: rgba(86, 182, 194, 0.08);
}

.post-link:hover::before {
  opacity: 0.38;
}

.post-excerpt {
  color: var(--text-muted);
  line-height: 1.85;
  max-width: var(--reading-measure);
  margin-top: 0.55rem;
}

.post-description {
  color: var(--text-muted);
  line-height: 1.78;
  max-width: var(--reading-measure);
  margin-top: 0.7rem;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.post-page {
  display: flex;
  flex-direction: column;
  gap: 2.6rem;
  animation: fade-up-in 520ms var(--ease-out) both;
}

.post-list>.post-item:nth-child(1),
.tag-grid>.tag-grid-item:nth-child(1) {
  animation-delay: 40ms;
}

.post-list>.post-item:nth-child(2),
.tag-grid>.tag-grid-item:nth-child(2) {
  animation-delay: 90ms;
}

.post-list>.post-item:nth-child(3),
.tag-grid>.tag-grid-item:nth-child(3) {
  animation-delay: 140ms;
}

.post-list>.post-item:nth-child(4),
.tag-grid>.tag-grid-item:nth-child(4) {
  animation-delay: 190ms;
}

.post-list>.post-item:nth-child(5),
.tag-grid>.tag-grid-item:nth-child(5) {
  animation-delay: 240ms;
}

.post-list>.post-item:nth-child(6),
.tag-grid>.tag-grid-item:nth-child(6) {
  animation-delay: 290ms;
}

.post-list>.post-item:nth-child(7),
.tag-grid>.tag-grid-item:nth-child(7) {
  animation-delay: 340ms;
}

.post-list>.post-item:nth-child(8),
.tag-grid>.tag-grid-item:nth-child(8) {
  animation-delay: 390ms;
}

.post-page > header {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line-soft);
}

.post-page h1 {
  max-width: 18ch;
}

.post-meta {
  margin: 0.35rem 0 0;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.post-tags {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.post-tag {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--line-soft);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease, background-color var(--t-fast) ease, transform var(--t-mid) var(--ease-out), box-shadow var(--t-mid) ease;
}

.post-tag::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: linear-gradient(120deg, var(--glow-blue), var(--glow-cyan));
  filter: blur(8px);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--t-mid) ease;
}

.post-tag:hover,
.post-tag:focus-visible {
  color: var(--text-strong);
  border-color: var(--glow-blue);
  background-color: rgba(97, 175, 239, 0.12);
  transform: translateY(-1px);
  box-shadow: 0 3px 12px rgba(97, 175, 239, 0.2), 0 0 0 1px rgba(97, 175, 239, 0.3);
}

.post-tag:hover::before,
.post-tag:focus-visible::before {
  opacity: 0.4;
}

.post-content {
  color: var(--text-muted);
  line-height: 1.9;
  max-width: var(--reading-measure);
  margin-inline: auto;
  word-spacing: 0.05em;
}

.post-content > * + * {
  margin-top: 1.4rem;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

.post-content code:not(pre > *) {
  background-color: var(--bg-panel-light);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  color: var(--text-strong);
  padding: 0.15em 0.35em;
  font-size: 0.95em;
}

.post-nav {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.8rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-soft);
  max-width: var(--reading-measure);
  margin-inline: auto;
  width: 100%;
}

.post-nav-item {
  flex: 1;
}

.post-nav-item.next {
  text-align: right;
}

.post-nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--t-fast) ease, transform var(--t-mid) var(--ease-out);
  padding: 0.4rem 0.6rem;
}

.post-nav a:hover,
.post-nav a:focus-visible {
  color: var(--text-strong);
  background-color: rgba(86, 182, 194, 0.08);
  transform: translateX(2px);
}

.post-nav a:focus-visible {
  outline: 2px solid #616161;
  outline-offset: 2px;
}

figure {
  align-self: center;
  text-align: center;
  font-style: italic;
  margin: 2rem 0;
}

figure img {
  display: block;
  max-width: 100%;
  height: auto;
  transition: transform var(--t-mid) var(--ease-out), box-shadow var(--t-mid) ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

figure img:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(86, 182, 194, 0.15);
}

img {
  max-width: 100%;
  height: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

table th {
  background-color: var(--bg-panel-light);
  color: var(--text-strong);
  font-weight: 600;
  padding: 0.8rem;
  text-align: left;
  border-bottom: 1px solid var(--line-strong);
}

table td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-muted);
}

table tr:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.01);
}

table tr:hover {
  background-color: rgba(86, 182, 194, 0.08);
}

.post-footnotes {
  margin-top: 2.2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.post-footnotes ol {
  margin: 0;
  padding-left: 1.8rem;
  list-style-type: decimal;
}

.post-footnotes li {
  margin-bottom: 0.65rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.post-footnotes li > *:first-child {
  display: inline;
}

.post-footnotes a {
  color: var(--glow-cyan);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0 0.2em;
  border-radius: 2px;
  transition: color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.post-footnotes a:hover {
  color: var(--text-strong);
  background-color: rgba(86, 182, 194, 0.15);
  text-decoration: underline;
}

@media (max-width: 720px) {
  .post-nav {
    flex-direction: column;
  }

  .post-nav-item,
  .post-nav-item.next {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-index,
  .post-page,
  .post-item,
  .tag-grid-item,
  .site-title,
  .site-nav a,
  .tag,
  .post-link,
  .post-tag,
  .post-nav a {
    animation: none;
    transition: none;
    opacity: 1;
    transform: none;
  }

  .site-nav a::before,
  .tag::before,
  .post-link::before,
  .post-tag::before {
    display: none;
  }
}