:root {
  --bg: #fbfaf8;
  --paper: #ffffff;
  --paper-soft: #f7f6f3;
  --text: #2f3437;
  --muted: #787774;
  --line: #e7e2dc;
  --line-strong: #d7d1ca;
  --accent: #37352f;
  --accent-contrast: #ffffff;
  --accent-soft: #efedea;
  --yellow: #fbf3db;
  --blue: #e7f3f8;
  --green: #edf3ec;
  --shadow: 0 18px 50px rgba(15, 15, 15, 0.06);
  --page-glow-1: rgba(251, 243, 219, 0.75);
  --page-glow-2: rgba(231, 243, 248, 0.7);
  --grid-line: rgba(55, 53, 47, 0.035);
  --header-border: rgba(231, 226, 220, 0.85);
  --header-bg: rgba(255, 255, 255, 0.74);
  --header-shadow: 0 8px 30px rgba(15, 15, 15, 0.045);
  --card-bg: rgba(255, 255, 255, 0.86);
  --button-hover-shadow: 0 10px 25px rgba(15, 15, 15, 0.07);
  --search-focus-ring: 0 0 0 4px rgba(55, 53, 47, 0.08);
  --article-card-shadow: 0 10px 35px rgba(15, 15, 15, 0.045);
  --article-card-shadow-hover: 0 18px 42px rgba(15, 15, 15, 0.08);
  --link: #0f548c;
  --pre-bg: #f6f5f2;
  --math-bg: #faf9f6;
  --code-bg: #f6f5f2;
  --code-toolbar-bg: rgba(47, 52, 55, 0.05);
  --code-border: rgba(215, 209, 202, 0.5);
  --code-text: #2f3437;
  --code-muted: #787774;
  --code-comment: #a1938f;
  --code-keyword: #6f2e2a;
  --code-string: #1f5c7c;
  --code-number: #c85a17;
  --code-title: #8b5cf6;
  --code-attr: #15803d;
  --code-tag: #d97706;
  --code-variable: #be123c;
  --code-built-in: #c26c16;
  --code-punctuation: #475569;
  --code-selection: rgba(96, 165, 250, 0.2);
  --visual-gradient-start: rgba(255, 255, 255, 0.94);
  --visual-gradient-end: rgba(247, 246, 243, 0.88);
  --visual-shadow: drop-shadow(0 14px 22px rgba(15, 15, 15, 0.12));
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1000px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #121416;
  --paper: #181c20;
  --paper-soft: #20252a;
  --text: #ece7df;
  --muted: #b2aba1;
  --line: #2e363d;
  --line-strong: #3b464f;
  --accent: #f1eadf;
  --accent-contrast: #13171b;
  --accent-soft: #262d33;
  --yellow: #7d6640;
  --blue: #29485a;
  --green: #30513f;
  --shadow: 0 22px 55px rgba(0, 0, 0, 0.34);
  --page-glow-1: rgba(125, 102, 64, 0.22);
  --page-glow-2: rgba(41, 72, 90, 0.18);
  --grid-line: rgba(241, 234, 223, 0.045);
  --header-border: rgba(59, 70, 79, 0.9);
  --header-bg: rgba(24, 28, 32, 0.78);
  --header-shadow: 0 12px 38px rgba(0, 0, 0, 0.28);
  --card-bg: rgba(24, 28, 32, 0.86);
  --button-hover-shadow: 0 12px 26px rgba(0, 0, 0, 0.26);
  --search-focus-ring: 0 0 0 4px rgba(241, 234, 223, 0.08);
  --article-card-shadow: 0 16px 36px rgba(0, 0, 0, 0.22);
  --article-card-shadow-hover: 0 24px 46px rgba(0, 0, 0, 0.3);
  --link: #82c6ff;
  --pre-bg: #15191d;
  --math-bg: #161b20;
  --code-bg: #0d131b;
  --code-toolbar-bg: rgba(255, 255, 255, 0.04);
  --code-border: rgba(148, 163, 184, 0.16);
  --code-text: #e6edf3;
  --code-muted: #9fb1c6;
  --code-comment: #73839a;
  --code-keyword: #ff7b72;
  --code-string: #9dd7ff;
  --code-number: #79c0ff;
  --code-title: #d2a8ff;
  --code-attr: #7ee787;
  --code-tag: #ffb86b;
  --code-variable: #ffb3a7;
  --code-built-in: #f2cc60;
  --code-punctuation: #a8bbcf;
  --code-selection: rgba(121, 192, 255, 0.2);
  --visual-gradient-start: rgba(32, 37, 42, 0.96);
  --visual-gradient-end: rgba(24, 28, 32, 0.88);
  --visual-shadow: drop-shadow(0 18px 26px rgba(0, 0, 0, 0.34));
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121416;
    --paper: #181c20;
    --paper-soft: #20252a;
    --text: #ece7df;
    --muted: #b2aba1;
    --line: #2e363d;
    --line-strong: #3b464f;
    --accent: #f1eadf;
    --accent-contrast: #13171b;
    --accent-soft: #262d33;
    --yellow: #7d6640;
    --blue: #29485a;
    --green: #30513f;
    --shadow: 0 22px 55px rgba(0, 0, 0, 0.34);
    --page-glow-1: rgba(125, 102, 64, 0.22);
    --page-glow-2: rgba(41, 72, 90, 0.18);
    --grid-line: rgba(241, 234, 223, 0.045);
    --header-border: rgba(59, 70, 79, 0.9);
    --header-bg: rgba(24, 28, 32, 0.78);
    --header-shadow: 0 12px 38px rgba(0, 0, 0, 0.28);
    --card-bg: rgba(24, 28, 32, 0.86);
    --button-hover-shadow: 0 12px 26px rgba(0, 0, 0, 0.26);
    --search-focus-ring: 0 0 0 4px rgba(241, 234, 223, 0.08);
    --article-card-shadow: 0 16px 36px rgba(0, 0, 0, 0.22);
    --article-card-shadow-hover: 0 24px 46px rgba(0, 0, 0, 0.3);
    --link: #82c6ff;
    --pre-bg: #15191d;
    --math-bg: #161b20;
    --code-bg: #0d131b;
    --code-toolbar-bg: rgba(255, 255, 255, 0.04);
    --code-border: rgba(148, 163, 184, 0.16);
    --code-text: #e6edf3;
    --code-muted: #9fb1c6;
    --code-comment: #73839a;
    --code-keyword: #ff7b72;
    --code-string: #9dd7ff;
    --code-number: #79c0ff;
    --code-title: #d2a8ff;
    --code-attr: #7ee787;
    --code-tag: #ffb86b;
    --code-variable: #ffb3a7;
    --code-built-in: #f2cc60;
    --code-punctuation: #a8bbcf;
    --code-selection: rgba(121, 192, 255, 0.2);
    --visual-gradient-start: rgba(32, 37, 42, 0.96);
    --visual-gradient-end: rgba(24, 28, 32, 0.88);
    --visual-shadow: drop-shadow(0 18px 26px rgba(0, 0, 0, 0.34));
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes loadingDots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
}

.splash-text::after {
  content: "";
  animation: loadingDots 1.2s steps(1) infinite;
}

.page-transition {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  pointer-events: none;
  opacity: 1;
  transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

body.page-loaded .page-transition {
  opacity: 0;
}

body.page-leaving .page-transition {
  opacity: 1;
  pointer-events: all;
}

body.page-leaving main,
body.page-leaving footer {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 300ms ease, transform 300ms ease;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  transition: background-color 180ms ease, color 180ms ease;
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1rem 0.35rem;
  font-size: 0.92em;
}

.site-header {
  position: sticky;
  top: 18px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(var(--max), calc(100% - 32px));
  animation: fadeInDown 500ms cubic-bezier(0.16, 1, 0.3, 1) both;
  margin: 18px auto 0;
  padding: 12px 24px;
  border: 1px solid var(--header-border);
  border-radius: 999px;
  background: var(--header-bg);
  box-shadow: var(--header-shadow);
  backdrop-filter: blur(18px);
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.brand,
.nav,
.header-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.6rem;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.brand-icon {
  display: inline-block;
  vertical-align: middle;
  max-height: 34px;
  max-width: 34px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 0;
  background: transparent;
  color: inherit;
}

.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  color: var(--text);
  cursor: pointer;
}

.mobile-menu-toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

.mobile-menu-toggle span::before,
.mobile-menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

.mobile-menu-toggle span::before {
  top: -6px;
}

.mobile-menu-toggle span::after {
  top: 6px;
}

.header-actions {
  gap: 1.2rem;
}

.nav {
  gap: 0.4rem;
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.52rem 0.8rem;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color 200ms ease, color 200ms ease, transform 200ms ease;
}

.nav a:hover {
  background: var(--accent-soft);
  color: var(--text);
  transform: translateY(-1px);
}

.nav a.active {
  background: var(--accent-soft);
  color: var(--text);
}

.brand:hover .brand-icon {
  animation: float 2s ease-in-out infinite;
}

.nav-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--text);
  color: var(--bg);
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease, color 180ms ease, transform 180ms ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: var(--button-hover-shadow);
}

.theme-toggle:focus-visible {
  outline: none;
  box-shadow: var(--search-focus-ring);
}

.theme-toggle .icon-moon {
  display: block;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-label {
  display: none;
}

.theme-toggle[aria-pressed="true"] {
  border-color: var(--line-strong);
  background: var(--text);
  color: var(--bg);
}

.theme-toggle[aria-pressed="true"] .icon-moon {
  display: none;
}

.theme-toggle[aria-pressed="true"] .icon-sun {
  display: block;
}

.page-shell,
.article-shell {
  position: relative;
  width: min(var(--max), calc(100% - 32px));
  margin: 54px auto 0;
}

.article-shell {
  max-width: var(--max);
}

.blog-page {
  max-width: 930px;
}

.blog .site-header,
.blog .site-footer {
  width: min(930px, calc(100% - 32px));
}

.notion-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.hero {
  padding: clamp(28px, 6vw, 68px);
  animation: fadeInUp 700ms cubic-bezier(0.16, 1, 0.3, 1) 100ms both;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 28px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.hero-visual-grid,
.visual-gallery {
  display: grid;
  gap: 18px;
  align-items: center;
}

.hero-visual-grid {
  grid-template-columns: 1fr;
}

.visual-gallery {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.visual-plain {
  display: block;
  width: min(100%, 520px);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  object-fit: contain;
  animation: float 5s ease-in-out infinite;
}

.visual-logo {
  display: block;
  width: min(100%, 130px);
  margin: 0 auto;
  object-fit: contain;
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.12;
  letter-spacing: -0.045em;
}

h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.35rem, 7vw, 5.7rem);
}

h2 {
  margin-bottom: 0.7rem;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
}

h3 {
  font-size: 1.12rem;
}

p {
  margin-top: 0;
}

.hero-text,
.page-title p,
.profile-card p {
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 42px;
  padding: 0.65rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper);
  font-weight: 700;
  transition: 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--button-hover-shadow);
}

.button:active {
  transform: translateY(0) scale(0.97);
  transition-duration: 80ms;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
}

.button-icon {
  width: 1rem;
  height: 1rem;
  flex: none;
}

.section-gap {
  margin-top: 22px;
}

.grid {
  display: grid;
  gap: 18px;
}

.two-columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-columns {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.small-card,
.toolbar,
.empty-state,
.profile-card,
.article,
.section-gap.notion-card {
  padding: 24px;
}

.small-card p,
.empty-state p,
.article-card p {
  color: var(--muted);
}

.split-card {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
  align-items: center;
  max-width: 940px;
  margin-left: auto;
  margin-right: auto;
}

.split-card-copy p:last-child {
  margin-bottom: 0;
}

.split-card-copy {
  max-width: 520px;
}

.split-card-copy .toolbar {
  margin-top: 1rem;
}

.split-card-copy .toolbar.notion-card {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.split-card .visual-logo {
  width: min(100%, 420px);
}

.showcase-card {
  display: grid;
  gap: 16px;
  align-content: start;
  height: 100%;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 300ms ease;
}

.showcase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(15, 15, 15, 0.08);
}

.showcase-card:hover .visual-logo {
  transform: scale(1.08);
}

.showcase-card:hover .button {
  transform: translateY(-2px) rotate(-45deg);
}

.showcase-card img {
  display: block;
  width: min(100%, 120px);
  aspect-ratio: 1 / 1;
  object-fit: contain;
}

.showcase-card p:last-child {
  margin-bottom: 0;
}

.showcase-card .button {
  width: 42px;
  height: 42px;
  padding: 0;
  justify-self: end;
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: 50%;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 300ms ease;
}

.emoji {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

.steps {
  margin-bottom: 0;
  padding-left: 1.2rem;
}

.steps li+li,
.checklist li+li {
  margin-top: 0.55rem;
}

.page-title {
  margin-bottom: 22px;
}

.page-title h1 {
  margin-bottom: 0.7rem;
}

.toolbar {
  display: grid;
  gap: 0.65rem;
}

.search-label {
  font-weight: 750;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
  align-items: center;
}

.search-input {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--paper-soft);
  color: var(--text);
  font: inherit;
  outline: none;
  padding: 0.85rem 1rem;
  transition: 160ms ease;
}

.search-input:focus {
  border-color: var(--accent);
  background: var(--paper);
  box-shadow: var(--search-focus-ring);
}

.search-button {
  display: inline-grid;
  place-items: center;
  min-width: 46px;
  min-height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--paper);
  color: var(--text);
  font: inherit;
  font-size: 1.05rem;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.search-button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: var(--button-hover-shadow);
}

.search-button:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--search-focus-ring);
}

.result-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: auto;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  padding: 0;
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: 0.01em;
}

.result-number {
  display: inline-flex;
  align-items: center;
  gap: 0.08rem;
  line-height: 1;
}

.result-number img {
  display: block;
  width: 3rem;
  height: 3rem;
  object-fit: contain;
}

.result-tag[data-state="loading"],
.result-tag[data-state="empty"],
.result-tag[data-state="error"] {
  color: var(--muted);
}

.muted {
  color: var(--muted);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
  padding: 0;
}

.article-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--article-card-shadow);
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 300ms ease, border-color 300ms ease;
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--article-card-shadow-hover);
}

.article-card:hover .card-arrow {
  transform: rotate(-45deg);
}

.article-card:active {
  transform: translateY(-2px) scale(0.98);
  transition-duration: 80ms;
}

.article-card .date {
  color: var(--muted);
  font-size: 0.86rem;
}

.article-card h2 {
  margin: 0.75rem 0;
  font-size: 1.45rem;
}

.article-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.article-card .card-arrow {
  width: 42px;
  height: 42px;
  padding: 0;
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: 50%;
  flex-shrink: 0;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-soft);
  color: var(--muted);
  padding: 0.18rem 0.52rem;
  font-size: 0.82rem;
}

.empty-state {
  margin-top: 22px;
  text-align: center;
}

.hidden {
  display: none !important;
}

.profile-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
}

.avatar {
  display: block;
  width: 112px;
  height: 112px;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  background: linear-gradient(135deg, var(--yellow), var(--green));
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.back-link {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--muted);
  font-weight: 700;
}

.back-link:hover {
  color: var(--text);
}

.article {
  padding: clamp(24px, 5vw, 54px);
}

.article.notion-card {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.article-header {
  margin-bottom: 32px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.article-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.rating-badge {
  width: 80px;
  height: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.article-header h1 {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
}

.article-content {
  font-size: 1.05rem;
}

.article-content h2,
.article-content h3 {
  margin-top: 2rem;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content pre {
  margin-bottom: 1.15rem;
}

.article-content a {
  border-bottom: 1px solid var(--line-strong);
  color: var(--link);
}

.article-content blockquote {
  margin-left: 0;
  border-left: 4px solid var(--line-strong);
  padding: 0.4rem 0 0.4rem 1rem;
  color: var(--muted);
}

.code-block-wrapper {
  margin-bottom: 1.15rem;
  border: 1px solid var(--code-border);
  border-radius: 18px;
  overflow: hidden;
  background: var(--code-bg);
  box-shadow: none;
}

.code-block-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--code-border);
  background: var(--code-toolbar-bg);
}

.code-language-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--code-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-language-badge::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: currentColor;
  box-shadow: none;
}

.code-block-wrapper pre {
  margin: 0;
}

.copy-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  color: var(--code-muted);
  background: transparent;
  border: 1px solid var(--code-border);
  border-radius: 10px;
  cursor: pointer;
  transition: 180ms ease;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--code-text);
  border-color: var(--code-muted);
}

.article-content pre {
  overflow: auto;
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 1rem 1rem 1.1rem;
  tab-size: 2;
}

.article-content pre code {
  display: block;
  min-width: max-content;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--code-text);
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.93rem;
  line-height: 1.7;
}

.article-content pre code::selection,
.article-content pre code *::selection {
  background: var(--code-selection);
}

.article-content pre code.hljs {
  background: transparent;
}

/* Plain code blocks without custom styling */
.article-content > pre {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  background: var(--pre-bg);
  margin-bottom: 1.15rem;
}

.article-content > pre code {
  display: block;
  color: var(--text);
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.93rem;
  line-height: 1.7;
  white-space: pre;
}

.article-content pre::-webkit-scrollbar {
  height: 10px;
}

.article-content pre::-webkit-scrollbar-track {
  background: transparent;
}

.article-content pre::-webkit-scrollbar-thumb {
  background: rgba(159, 176, 195, 0.35);
  border-radius: 999px;
}

.code-block-wrapper .hljs {
  color: var(--code-text);
}

.code-block-wrapper .hljs-comment,
.code-block-wrapper .hljs-quote {
  color: var(--code-comment);
  font-style: italic;
}

.code-block-wrapper .hljs-keyword,
.code-block-wrapper .hljs-literal,
.code-block-wrapper .hljs-section,
.code-block-wrapper .hljs-link,
.code-block-wrapper .hljs-selector-tag {
  color: var(--code-keyword);
}

.code-block-wrapper .hljs-string,
.code-block-wrapper .hljs-regexp,
.code-block-wrapper .hljs-meta .hljs-string {
  color: var(--code-string);
}

.code-block-wrapper .hljs-number,
.code-block-wrapper .hljs-symbol,
.code-block-wrapper .hljs-bullet {
  color: var(--code-number);
}

.code-block-wrapper .hljs-title,
.code-block-wrapper .hljs-title.class_,
.code-block-wrapper .hljs-title.function_,
.code-block-wrapper .hljs-function .hljs-title,
.code-block-wrapper .hljs-property {
  color: var(--code-title);
}

.code-block-wrapper .hljs-attr,
.code-block-wrapper .hljs-attribute,
.code-block-wrapper .hljs-selector-class,
.code-block-wrapper .hljs-selector-attr,
.code-block-wrapper .hljs-selector-id {
  color: var(--code-attr);
}

.code-block-wrapper .hljs-tag,
.code-block-wrapper .hljs-name,
.code-block-wrapper .hljs-selector-pseudo {
  color: var(--code-tag);
}

.code-block-wrapper .hljs-variable,
.code-block-wrapper .hljs-template-variable,
.code-block-wrapper .hljs-type,
.code-block-wrapper .hljs-subst {
  color: var(--code-variable);
}

.code-block-wrapper .hljs-built_in,
.code-block-wrapper .hljs-doctag {
  color: var(--code-built-in);
}

.code-block-wrapper .hljs-operator,
.code-block-wrapper .hljs-punctuation {
  color: var(--code-punctuation);
}

.code-block-wrapper .hljs-addition {
  color: #8adf97;
}

.code-block-wrapper .hljs-deletion {
  color: #ff8e8e;
}

.math-inline,
.math-block {
  overflow-x: auto;
  overflow-y: hidden;
}

.math-inline {
  display: inline-block;
  max-width: 100%;
  vertical-align: middle;
}

.math-block {
  margin: 1.4rem 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.math-block .katex-display {
  margin: 0;
}

.embed-frame {
  margin: 1.4rem 0;
}

.embed-frame iframe {
  display: block;
  width: 100%;
  max-width: 100%;
  height: var(--embed-height, 360px);
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper-soft);
}

.embed-frame figcaption {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.embed-frame figcaption a {
  color: var(--link);
  border-bottom: 1px solid var(--line-strong);
}

.article-content img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  border-radius: 16px;
  border: 1px solid var(--line);
}

.site-footer {
  width: min(var(--max), calc(100% - 32px));
  margin: 44px auto 28px;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

.error-page .hero-layout {
  grid-template-columns: 1fr;
  justify-items: center;
  text-align: center;
}

.error-page .hero-copy {
  display: grid;
  justify-items: center;
}

.error-page .hero-text {
  margin-left: auto;
  margin-right: auto;
}

.error-page .hero-actions {
  justify-content: center;
}

.error-page .hero-visual-grid {
  grid-template-columns: 1fr;
  justify-items: center;
  width: 100%;
}

.error-page .hero-visual-grid .visual-plain {
  width: min(100%, 460px);
}

.mobile-menu-panel,
.mobile-menu-backdrop {
  display: none;
}

@media (max-width: 860px) {

  .hero-layout,
  .visual-gallery {
    grid-template-columns: 1fr;
  }

  .posts-grid,
  .three-columns,
  .two-columns,
  .split-card {
    grid-template-columns: 1fr;
  }

  .posts-grid {
    gap: 14px;
  }

  .hero-visual-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Responsive Code Block Styles */
  .code-block-wrapper {
    border-radius: 14px;
    margin-bottom: 1rem;
  }

  .code-block-toolbar {
    padding: 0.6rem 0.7rem;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .article-content pre {
    padding: 0.85rem 0.8rem 0.9rem;
    font-size: 0.88rem;
  }

  .article-content pre code {
    font-size: 0.88rem;
    line-height: 1.6;
  }
}

@media (max-width: 620px) {
  /* Responsive Code Block Styles */
  .code-block-wrapper {
    border-radius: 12px;
    margin-bottom: 0.9rem;
    margin-left: -16px;
    margin-right: -16px;
    border-radius: 0;
  }

  .code-block-toolbar {
    padding: 0.5rem 0.6rem;
    gap: 0.5rem;
  }

  .code-language-badge {
    font-size: 0.65rem;
  }

  .copy-button {
    width: 30px;
    height: 30px;
  }

  .article-content pre {
    padding: 0.75rem 0.7rem 0.8rem;
    font-size: 0.82rem;
    margin-bottom: 1rem;
  }

  .article-content pre code {
    font-size: 0.82rem;
    line-height: 1.5;
  }

  .article-content pre::-webkit-scrollbar {
    height: 6px;
  }

  /* Ensure code blocks don't break layout on mobile */
  .article-content {
    overflow: hidden;
  }

  .site-header {
    align-items: center;
    border-radius: 24px;
    flex-direction: row;
    position: sticky;
    top: 10px;
    z-index: 20;
  }

  .brand {
    justify-content: center;
    padding-left: 0;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  .header-actions {
    display: none;
  }

  .nav {
    display: none;
  }

  .mobile-menu-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 15, 0.44);
    z-index: -1;
  }

  .mobile-menu-panel {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    width: 100%;
    padding: 1.2rem;
    gap: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: 0 28px 52px rgba(15, 15, 15, 0.2);
    z-index: 35;
    overflow: hidden;
  }

  .mobile-menu-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.6rem;
  }

  .mobile-menu-panel__header span {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
  }

  .mobile-menu-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--paper);
    color: var(--text);
    font-size: 1.25rem;
    cursor: pointer;
  }

  .mobile-menu-panel .mobile-nav {
    display: flex;
    overflow-x: auto;
    gap: 0.6rem;
    padding-bottom: 0.5rem;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .mobile-menu-panel .mobile-nav::-webkit-scrollbar {
    display: none;
  }

  .mobile-menu-panel .mobile-nav a {
    flex: 0 0 auto;
    display: block;
    width: auto;
    padding: 0.6rem 1.2rem;
    border-radius: 999px;
    background: var(--paper);
    color: var(--text);
    font-weight: 700;
    white-space: nowrap;
    scroll-snap-align: start;
    transition: transform 180ms ease, background-color 180ms ease;
  }

  .mobile-menu-panel .mobile-nav a:hover,
  .mobile-menu-panel .mobile-nav a.active {
    background: var(--accent-soft);
    color: var(--text);
    transform: translateY(-2px);
  }

  .mobile-menu-panel .mobile-theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: auto;
    border-radius: 18px;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--line);
    background: var(--paper);
    color: var(--text);
    font-weight: 700;
  }

  .mobile-theme-toggle .theme-label {
    display: block;
    flex: 1;
    text-align: left;
    font-size: 0.95rem;
  }

  .site-header.menu-open .mobile-menu-backdrop,
  .site-header.menu-open .mobile-menu-panel {
    display: block;
  }

  .site-header.menu-open {
    backdrop-filter: none;
  }

  .site-header.menu-open .header-actions {
    display: none;
  }

  .page-shell,
  .article-shell {
    margin-top: 32px;
  }

  .hero-visual-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual-grid .visual-plain:first-child {
    grid-column: auto;
  }

  .profile-card {
    grid-template-columns: 1fr;
  }
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 32px;
  padding: 20px 0;
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.pagination-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.page-indicator {
  min-width: 120px;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
}

.page-numbers {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.page-number.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.page-number:hover:not(.active) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--text);
}

.scroll-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--text);
  color: var(--bg);
  font-size: 1.4rem;
  box-shadow: 0 12px 28px rgba(15, 15, 15, 0.12);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 250ms ease, visibility 250ms ease, transform 250ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
  z-index: 40;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
  transform: translateY(-3px);
  box-shadow: var(--button-hover-shadow);
}

.reading-progress-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  z-index: 50;
  pointer-events: none;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background-color: var(--text);
  transition: width 100ms ease-out;
}

.article-thumbnail {
  width: 100%;
  height: auto;
  max-height: 160px;
  object-fit: contain;
  margin-bottom: 18px;
  background: transparent;
  border-radius: var(--radius-sm);
}

.post-hero-image {
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: contain;
  margin-bottom: 24px;
  border-radius: var(--radius);
  background: transparent;
}

.site-footer {
  animation: fadeInUp 500ms cubic-bezier(0.16, 1, 0.3, 1) 300ms both;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}