@font-face {
  font-family: "Inter Variable";
  src: url("assets/fonts/InterVariable.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter Variable";
  src: url("assets/fonts/InterVariable-Italic.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "LB Serif";
  src: url("assets/fonts/LB_Serif_Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LB Serif";
  src: url("assets/fonts/LB_Serif_Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "LB Serif";
  src: url("assets/fonts/LB_Serif_Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LB Serif";
  src: url("assets/fonts/LB_Serif_BoldItalic.ttf") format("truetype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "LL Serif";
  src: url("assets/fonts/LL_Serif_Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LL Serif";
  src: url("assets/fonts/LL_Serif_Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "LL Serif";
  src: url("assets/fonts/LL_Serif_Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LL Serif";
  src: url("assets/fonts/LL_Serif_BoldItalic.ttf") format("truetype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Literata";
  src: url("assets/fonts/Literata.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Literata";
  src: url("assets/fonts/Literata-Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "KadmosU";
  src: url("assets/fonts/KadmosU.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #fafffa;
  --panel: #fdfbf7;
  --text: #14532d;
  --text-strong: #052e16;
  --text-soft: rgba(20, 83, 45, 0.8);
  --border: rgba(20, 83, 45, 0.35);
  --card: rgba(255, 255, 255, 0.95);
  --hover: #f0f9f2;
  --sidebar-surface: #f4f1ea;
  --surface-solid: #ffffff;
  --shadow-strong: rgba(20, 83, 45, 0.2);
  --shadow-pulse-duration: 2.6s;
  --shadow-dx-sm: 0px;
  --shadow-dy-sm: 0px;
  --shadow-dx-md: 0px;
  --shadow-dy-md: 0px;
  --shadow-dx-lg: 0px;
  --shadow-dy-lg: 0px;
}

:root[data-theme="dark"] {
  --bg: #0c1614;
  --panel: #14231f;
  --text: #c8f4d8;
  --text-strong: #e9fff1;
  --text-soft: rgba(200, 244, 216, 0.84);
  --border: rgba(143, 231, 177, 0.34);
  --card: rgba(20, 36, 31, 0.94);
  --hover: #1d3a31;
  --sidebar-surface: #13211d;
  --surface-solid: #10201b;
  --shadow-strong: rgba(0, 0, 0, 0.48);
}

* {
  box-sizing: border-box;
  max-width: 100%;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Literata", "Noto Serif CJK SC", "Noto Serif CJK JP", "Noto Serif CJK TC", "LL Serif", "LB Serif", serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: none;
}

html,
body {
  color-scheme: light dark;
}

:lang(zh),
:lang(zh-CN),
:lang(zh-Hans),
:lang(zh-TW),
:lang(zh-Hant),
:lang(ja) {
  font-family: "Noto Serif CJK SC", "Noto Serif CJK JP", "Noto Serif CJK TC", "Literata", "LL Serif", "LB Serif", serif;
}

:lang(el) {
  font-family: "KadmosU", "Literata", "LL Serif", "LB Serif", serif;
}

body * {
  cursor: none !important;
}

.page {
  min-height: 100vh;
}

.page-shell {
  min-height: 100vh;
  padding: 3rem;
}

.app-frame {
  position: relative;
  min-height: 92vh;
  border: 2px solid var(--border);
  background: var(--panel);
  box-shadow: 10px 10px 0 var(--shadow-strong);
  animation: footer-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
  display: grid;
  grid-template-columns: 300px 1fr;
  overflow: hidden;
}

.app-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(rgba(253, 251, 247, 0.34), rgba(253, 251, 247, 0.34));
}

:root[data-theme="dark"] .app-frame::before {
  background: linear-gradient(rgba(8, 18, 15, 0.5), rgba(8, 18, 15, 0.5));
}

.app-frame-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  pointer-events: none;
}

.app-frame > .sidebar,
.app-frame > .content {
  position: relative;
  z-index: 2;
}

.sidebar {
  border-right: 2px solid var(--border);
  padding: 1rem;
  background: var(--sidebar-surface);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.nav-btn {
  text-align: left;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text-strong);
  padding: 0.7rem 0.75rem;
  font-family: inherit;
  font-size: 0.98rem;
  text-transform: lowercase;
  transition: background-color 120ms ease, transform 120ms ease;
}

.nav-btn:hover,
.nav-btn.is-active {
  background: #dff6e4;
  transform: translate(-1px, -1px);
}

:root[data-theme="dark"] .nav-btn:hover,
:root[data-theme="dark"] .nav-btn.is-active {
  background: #bdeed0;
  color: #000000;
}

.sidebar-actions {
  margin-top: auto;
  border: 2px solid var(--border);
  background: var(--surface-solid);
  padding: 0.9rem;
  display: grid;
  gap: 0.8rem;
}

.socials {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 0.45rem;
}

.socials .icon-link {
  width: 1.9rem;
  height: 1.9rem;
}

.socials .icon-link svg {
  width: 1rem;
  height: 1rem;
}

.content {
  position: relative;
  overflow: auto;
  padding: 1rem;
}

.animals-layer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 96px;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.tab-title-wrap {
  position: relative;
  z-index: 2;
}

.shared-title {
  margin-bottom: 1rem;
}

.content-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg,
      rgba(255, 245, 238, 0.18),
      rgba(232, 245, 255, 0.16),
      rgba(228, 246, 236, 0.16));
  opacity: 1;
  pointer-events: none;
}

:root[data-theme="dark"] .content-bg {
  background:
    linear-gradient(120deg,
      rgba(20, 34, 29, 0.4),
      rgba(15, 29, 43, 0.32),
      rgba(17, 38, 27, 0.34));
}

.tab {
  display: none;
  position: relative;
  z-index: 1;
}

.tab.is-active {
  display: block;
}

.welcome {
  margin: 0 0 1.25rem;
  font-weight: 500;
  font-size: clamp(1.75rem, 4vw, 3.1rem);
  line-height: 1.1;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  text-transform: lowercase;
}

#typed-title {
  min-height: 1.2em;
  white-space: pre-wrap;
}

.md-rotation-slot {
  width: 100%;
}

.markdown-rotation {
  display: inline-block;
  min-height: 1em;
  white-space: pre-wrap;
}

.markdown-rotation-target {
  width: 100%;
}

.markdown-rotation--markdown,
.markdown-rotation--html,
.markdown-rotation-target.markdown-rotation {
  display: block;
  width: 100%;
  max-width: 100%;
}

.markdown-rotation--markdown,
.markdown-rotation--html,
.markdown-rotation-fragment {
  white-space: normal;
}

.markdown-rotation-fragment {
  display: block;
  width: 100%;
}

.turtle-cursor {
  animation: none;
}

.turtle-inline {
  width: clamp(28px, 4vw, 48px);
  height: auto;
  transform: translateY(3px);
}

.animal-sprite {
  position: absolute;
  bottom: -10px;
  width: 64px;
  height: 42px;
  image-rendering: pixelated;
  background-repeat: no-repeat;
  background-size: 192px 128px;
  opacity: 0.95;
}

.intro-card {
  border: 2px solid var(--border);
  background:
    linear-gradient(120deg,
      rgba(255, 238, 246, 0.62),
      rgba(229, 241, 255, 0.58),
      rgba(225, 249, 235, 0.58),
      rgba(255, 245, 215, 0.56));
  background-size: 260% 260%;
  box-shadow: 4px 4px 0 rgba(20, 83, 45, 0.2);
  padding: clamp(1rem, 3vw, 2rem);
  max-width: 930px;
  position: relative;
  overflow: hidden;
  animation:
    site-surface-gradient-flow 3.8s ease-in-out infinite,
    card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

.intro-card h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 500;
}

.intro-card p {
  margin: 0 0 1rem;
  max-width: 65ch;
  color: var(--text-soft);
  line-height: 1.6;
  font-size: clamp(0.95rem, 1.8vw, 1.12rem);
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
  margin: 0 0 0.8rem;
  color: var(--text-strong);
}

.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  margin: 0 0 0.65rem;
  color: var(--text-strong);
}

.markdown-content h2 {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 500;
}

.markdown-content h4 {
  font-size: clamp(1.02rem, 2.1vw, 1.26rem);
}

.markdown-content h5 {
  font-size: clamp(0.96rem, 1.9vw, 1.12rem);
}

.markdown-content h6 {
  font-size: clamp(0.9rem, 1.7vw, 1.02rem);
}

.markdown-content p,
.markdown-content li {
  margin: 0 0 0.9rem;
  max-width: 72ch;
  color: var(--text-soft);
  line-height: 1.6;
  font-size: clamp(0.95rem, 1.8vw, 1.12rem);
}

.markdown-content ul,
.markdown-content ol {
  padding-left: 1.2rem;
  margin: 0.2rem 0 0.9rem;
}

.markdown-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.3rem 0 1rem;
  background: var(--surface-solid);
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.12);
  animation: card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

.markdown-content th,
.markdown-content td {
  border: 1px solid var(--border);
  padding: 0.42rem 0.56rem;
  text-align: left;
  vertical-align: top;
  font-size: 0.9rem;
}

.markdown-content th {
  color: var(--text-strong);
  background: var(--hover);
}

.markdown-content blockquote {
  margin: 0.2rem 0 1rem;
  padding: 0.2rem 0 0.2rem 0.7rem;
  border-left: 3px solid var(--border);
}

.markdown-content pre {
  margin: 0.2rem 0 1rem;
  padding: 0;
  border: 0;
  overflow-x: auto;
}

.markdown-content .md-code-block {
  margin: 0.2rem 0 1rem;
  border: 2px solid var(--border);
  background: var(--surface-solid);
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.12);
  overflow: hidden;
  animation: card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

.markdown-content .md-code-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.42rem 0.56rem;
  border-bottom: 2px solid var(--border);
  background: var(--hover);
}

.markdown-content .md-code-language {
  color: var(--text-strong);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.markdown-content .md-code-copy {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  color: var(--text);
  padding: 0.18rem 0.52rem;
  font-family: inherit;
  font-size: 0.74rem;
  text-transform: lowercase;
  transition: background-color 120ms ease, transform 120ms ease;
}

.markdown-content .md-code-copy:hover:not(:disabled),
.markdown-content .md-code-copy.is-copied {
  background: var(--hover);
  transform: translate(-1px, -1px);
}

.markdown-content .md-code-copy:disabled {
  opacity: 0.8;
}

.code-copy-toast {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  border: 2px solid var(--border);
  background: var(--surface-solid);
  color: var(--text-strong);
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.2);
  padding: 0.16rem 0.48rem;
  font-size: 0.74rem;
  opacity: 0;
  transform: translateY(3px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.code-copy-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.markdown-content .md-code-pre {
  margin: 0;
}

.markdown-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.88em;
}

.markdown-content pre code.hljs {
  display: block;
  padding: 0.8rem 0.9rem;
  border-radius: 6px;
}

.markdown-content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0.5rem 0 1rem;
}

.markdown-content .md-vspace {
  width: 100%;
  pointer-events: none;
}

.section-markdown {
  margin-bottom: 1rem;
  border: 2px solid var(--border);
  background:
    linear-gradient(120deg,
      rgba(255, 238, 246, 0.6),
      rgba(229, 241, 255, 0.56),
      rgba(225, 249, 235, 0.56),
      rgba(255, 245, 215, 0.54));
  background-size: 260% 260%;
  box-shadow: 3px 3px 0 rgba(20, 83, 45, 0.15);
  padding: clamp(0.85rem, 2.6vw, 1.4rem);
  position: relative;
  overflow: hidden;
  animation:
    site-surface-gradient-flow 3.4s ease-in-out infinite,
    card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

#info-markdown {
  max-width: 920px;
}

#info-markdown h1 {
  font-size: clamp(1.6rem, 3.6vw, 2.45rem);
  letter-spacing: 0.01em;
}

#info-markdown .info-kicker {
  margin: 0.2rem 0 1.1rem;
  color: rgba(20, 83, 45, 0.72);
  font-size: 0.98rem;
}

#info-markdown h2 {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(20, 83, 45, 0.35);
  font-size: clamp(1.06rem, 2.2vw, 1.4rem);
  letter-spacing: 0.01em;
}

#info-markdown ul {
  list-style: none;
  padding-left: 0;
  margin: 0.35rem 0 1.2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.5rem;
}

#info-markdown li {
  margin: 0;
  border: 2px solid var(--border);
  background:
    linear-gradient(120deg,
      rgba(255, 244, 246, 0.68),
      rgba(233, 245, 255, 0.64),
      rgba(231, 250, 240, 0.64));
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.18);
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
  animation: card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

#info-markdown li:hover,
#info-markdown li:focus-within {
  transform: translate(-2px, -2px);
  border-color: rgba(20, 83, 45, 0.6);
  box-shadow: 5px 5px 0 rgba(20, 83, 45, 0.24);
  animation: card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

#info-markdown li a {
  display: block;
  width: 100%;
  text-decoration: none;
  color: var(--text-strong);
  padding: 0.55rem 0.7rem;
  line-height: 1.45;
  font-size: 0.95rem;
}

#info-markdown li a:hover {
  color: #0f5132;
}

#info-markdown .info-footer {
  margin-top: 0.35rem;
  font-style: italic;
  color: rgba(20, 83, 45, 0.75);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.9rem;
}

.blog-filter-label {
  font-size: 0.82rem;
  color: var(--text-soft);
  text-transform: lowercase;
}

.blog-filter-select {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  color: var(--text);
  font-family: inherit;
  padding: 0.2rem 0.5rem;
  font-size: 0.86rem;
}

.home-language-switcher {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.12);
  padding: 0.85rem;
  margin: 0.25rem 0 1rem;
  animation: card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

.home-language-label {
  margin: 0 0 0.45rem;
  font-size: 0.84rem;
  color: var(--text-soft);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.home-language-controls {
  display: flex;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.home-language-btn {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  color: var(--text);
  padding: 0.28rem 0.7rem;
  font-family: inherit;
  font-size: 1.05rem;
  line-height: 1;
  transition: background-color 120ms ease, transform 120ms ease;
}

.home-language-btn:hover,
.home-language-btn.is-active {
  background: var(--hover);
  transform: translate(-1px, -1px);
}

.home-language-content {
  margin-top: 0.25rem;
}

.actions {
  margin-top: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.button {
  text-decoration: none;
  border: 2px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.95rem;
  font-size: 0.98rem;
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.2);
  transition: transform 120ms ease, background-color 120ms ease;
  text-transform: lowercase;
}

.info-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
}

.socials .info-button {
  padding: 0;
  font-size: 0;
  line-height: 1;
}

.info-button-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex: 0 0 auto;
}

.socials .info-button .info-button-icon {
  width: 1rem;
  height: 1rem;
}

.info-button-icon circle:first-child {
  fill: #0f6ad8;
}

.info-button-icon rect,
.info-button-icon circle:last-child {
  fill: #ffffff;
}

.button:hover {
  transform: translate(-1px, -1px);
  background: var(--hover);
}

:root[data-theme="dark"] .intro-card,
:root[data-theme="dark"] .section-markdown,
:root[data-theme="dark"] #info-markdown li {
  background:
    linear-gradient(128deg,
      rgba(26, 46, 37, 0.56),
      rgba(15, 35, 44, 0.52),
      rgba(24, 52, 39, 0.52),
      rgba(45, 43, 22, 0.46));
  background-size: 260% 260%;
  animation:
    site-surface-gradient-flow 4.2s ease-in-out infinite,
    card-shadow-pulse-dark var(--shadow-pulse-duration) ease-in-out infinite;
}

:root[data-theme="dark"] .card:hover,
:root[data-theme="dark"] .card:focus-within,
:root[data-theme="dark"] #info-markdown li:hover,
:root[data-theme="dark"] #info-markdown li:focus-within {
  background:
    linear-gradient(128deg,
      rgba(31, 56, 45, 0.66),
      rgba(19, 45, 56, 0.62),
      rgba(29, 60, 45, 0.62),
      rgba(54, 52, 30, 0.56));
  background-size: 260% 260%;
}

:root[data-theme="dark"] .intro-card,
:root[data-theme="dark"] .section-markdown,
:root[data-theme="dark"] .card,
:root[data-theme="dark"] #info-markdown li,
:root[data-theme="dark"] .modal-card,
:root[data-theme="dark"] .lightbox-card,
:root[data-theme="dark"] .lightbox-image-wrap {
  box-shadow: 4px 4px 0 var(--shadow-strong);
}

:root[data-theme="dark"] .home-language-switcher,
:root[data-theme="dark"] .markdown-content .md-code-block,
:root[data-theme="dark"] .markdown-content table {
  animation: card-shadow-pulse-dark var(--shadow-pulse-duration) ease-in-out infinite;
}

:root[data-theme="dark"] .error404-card,
:root[data-theme="dark"] .modal-card,
:root[data-theme="dark"] .blog-filter-select,
:root[data-theme="dark"] .button,
:root[data-theme="dark"] .icon-link,
:root[data-theme="dark"] .open-btn,
:root[data-theme="dark"] .modal-close,
:root[data-theme="dark"] .gallery-nav,
:root[data-theme="dark"] .home-language-switcher,
:root[data-theme="dark"] .home-language-btn,
:root[data-theme="dark"] .markdown-content .md-code-copy,
:root[data-theme="dark"] .code-copy-toast,
:root[data-theme="dark"] .markdown-content .md-code-block,
:root[data-theme="dark"] .markdown-content table,
:root[data-theme="dark"] .modal-image {
  background: var(--surface-solid);
}

:root[data-theme="dark"] .markdown-content pre code.hljs,
:root[data-theme="dark"] .hljs {
  background: #0d1714;
  color: #d9ffe7;
}

:root[data-theme="dark"] .hljs-comment,
:root[data-theme="dark"] .hljs-quote {
  color: #8fb9a2;
}

:root[data-theme="dark"] .hljs-keyword,
:root[data-theme="dark"] .hljs-title,
:root[data-theme="dark"] .hljs-section,
:root[data-theme="dark"] .hljs-selector-tag,
:root[data-theme="dark"] .hljs-name {
  color: #9de8bb;
}

:root[data-theme="dark"] .hljs-string,
:root[data-theme="dark"] .hljs-literal,
:root[data-theme="dark"] .hljs-attr {
  color: #9cd5ff;
}

:root[data-theme="dark"] .hljs-number,
:root[data-theme="dark"] .hljs-symbol,
:root[data-theme="dark"] .hljs-variable {
  color: #ffd999;
}

.icon-link {
  text-decoration: none;
  border: 2px solid var(--border);
  width: 2.2rem;
  height: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text);
  box-shadow: 1px 1px 0 rgba(20, 83, 45, 0.2);
}

.icon-link svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
}

.section-title {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 4vw, 3rem);
  color: var(--text-strong);
  font-weight: 700;
  text-transform: lowercase;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(265px, 1fr));
  gap: 0.85rem;
}

.card,
.project-card,
.blog-card,
.experience-card {
  border: 2px solid var(--border);
  background:
    linear-gradient(120deg,
      rgba(255, 238, 246, 0.58),
      rgba(229, 241, 255, 0.54),
      rgba(225, 249, 235, 0.54),
      rgba(255, 245, 215, 0.52));
  background-size: 260% 260%;
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.2);
  padding: 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  position: relative;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease, border-color 160ms ease;
  animation:
    site-surface-gradient-flow 3.2s ease-in-out infinite,
    card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

.card:hover,
.card:focus-within,
.project-card:hover,
.project-card:focus-within,
.blog-card:hover,
.blog-card:focus-within,
.experience-card:hover,
.experience-card:focus-within {
  background:
    linear-gradient(120deg,
      rgba(255, 232, 243, 0.68),
      rgba(223, 239, 255, 0.66),
      rgba(218, 247, 230, 0.66),
      rgba(255, 241, 205, 0.64));
  background-size: 260% 260%;
  border-color: var(--text);
  box-shadow: 5px 5px 0 rgba(20, 83, 45, 0.25);
  transform: translate(-2px, -3px);
  animation:
    site-surface-gradient-flow 3.2s ease-in-out infinite,
    card-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

:root[data-theme="dark"] .card {
  animation:
    site-surface-gradient-flow 3.2s ease-in-out infinite,
    card-shadow-pulse-dark var(--shadow-pulse-duration) ease-in-out infinite;
}

:root[data-theme="dark"] .project-card,
:root[data-theme="dark"] .blog-card,
:root[data-theme="dark"] .experience-card {
  animation:
    site-surface-gradient-flow 3.2s ease-in-out infinite,
    card-shadow-pulse-dark var(--shadow-pulse-duration) ease-in-out infinite;
}

:root[data-theme="dark"] .card:hover,
:root[data-theme="dark"] .card:focus-within {
  animation:
    site-surface-gradient-flow 3.2s ease-in-out infinite,
    card-shadow-pulse-dark var(--shadow-pulse-duration) ease-in-out infinite;
}

:root[data-theme="dark"] .project-card:hover,
:root[data-theme="dark"] .project-card:focus-within,
:root[data-theme="dark"] .blog-card:hover,
:root[data-theme="dark"] .blog-card:focus-within,
:root[data-theme="dark"] .experience-card:hover,
:root[data-theme="dark"] .experience-card:focus-within {
  animation:
    site-surface-gradient-flow 3.2s ease-in-out infinite,
    card-shadow-pulse-dark var(--shadow-pulse-duration) ease-in-out infinite;
}

.card-image {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border: 2px solid var(--border);
  background: #e7e5e4;
  transition: transform 180ms ease, filter 180ms ease, border-color 180ms ease;
}

.card:hover .card-image,
.card:focus-within .card-image {
  transform: scale(1.02);
  filter: saturate(1.08);
  border-color: var(--text);
}

.card h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text-strong);
}

.meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.card:hover h3,
.card:focus-within h3 {
  color: var(--text);
}

.open-btn {
  margin-top: auto;
  align-self: flex-start;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 0.35rem 0.7rem;
  text-transform: lowercase;
  font-family: inherit;
  transition: background-color 120ms ease, transform 120ms ease, border-color 120ms ease;
}

.open-btn:hover,
.card:hover .open-btn,
.card:focus-within .open-btn {
  background: var(--hover);
  border-color: var(--text);
  transform: translate(-1px, -1px);
}

.chips,
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.chip,
.tag {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.16rem 0.52rem;
  font-family: "Inter Variable", "Literata", serif;
  font-size: 0.76rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.01em;
  background: var(--hover);
  color: var(--text-strong);
}

.experience-cards .card-image {
  object-fit: contain;
  background: var(--surface-solid);
  padding: 0.5rem;
}

.modal {
  border: 0;
  background: transparent;
  width: min(960px, 95vw);
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.8);
}

.modal-card {
  border: 2px solid var(--border);
  background: var(--panel);
  box-shadow: 10px 10px 0 rgba(20, 83, 45, 0.2);
  padding: 1rem;
  max-height: 88vh;
  overflow: auto;
}

.modal-close,
.gallery-nav {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  color: var(--text);
  font-family: inherit;
  padding: 0.35rem 0.7rem;
  text-transform: lowercase;
}

.modal-gallery-wrap {
  margin: 0.7rem 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.5rem;
}

.modal-image {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  border: 2px solid var(--border);
  background: var(--surface-solid);
}

.site-footer {
  margin-top: 1rem;
  position: relative;
  border: 2px solid var(--border);
  background: var(--panel);
  box-shadow: 10px 10px 0 var(--shadow-strong);
  padding: 0.72rem 0.9rem;
  overflow: hidden;
  isolation: isolate;
  animation: footer-shadow-pulse var(--shadow-pulse-duration) ease-in-out infinite;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(130deg, rgba(253, 251, 247, 0.42), rgba(248, 255, 250, 0.38));
  pointer-events: none;
}

:root[data-theme="dark"] .site-footer::before {
  background: linear-gradient(130deg, rgba(10, 19, 16, 0.48), rgba(17, 32, 26, 0.44));
}


.site-footer-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  pointer-events: none;
}

.site-footer-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.theme-choice-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

.site-footer-text {
  color: var(--text-soft);
  font-size: 0.86rem;
  text-transform: lowercase;
}

.site-footer-text--theme {
  margin-left: auto;
  text-align: right;
}

.theme-toggle {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.38rem 0.72rem;
  text-transform: lowercase;
  transition: background-color 120ms ease, transform 120ms ease;
}

.theme-toggle:hover {
  background: var(--hover);
  transform: translate(-1px, -1px);
}

.theme-toggle.is-active {
  background: var(--hover);
  box-shadow: inset 0 0 0 1px var(--border);
}

.modal-card h3 {
  margin: 0.25rem 0;
  font-size: 1.5rem;
  color: var(--text-strong);
}

.modal-meta {
  margin: 0 0 0.5rem;
  color: var(--text-soft);
}

.modal-description,
.modal-details {
  color: var(--text-soft);
  line-height: 1.55;
  white-space: pre-line;
}

.modal-description {
  font-style: italic;
}

.blog-modal-content {
  margin-top: 0.75rem;
}

.music-post-meta {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.16);
  padding: 0.6rem 0.7rem;
  margin: 0.2rem 0 0.75rem;
  display: grid;
  gap: 0.28rem;
}

.music-post-meta-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0.55rem;
  align-items: baseline;
}

.music-post-meta-key {
  color: var(--text-soft);
  text-transform: lowercase;
  font-size: 0.8rem;
}

.music-post-meta-value {
  color: var(--text-strong);
  font-size: 0.9rem;
}

.music-player {
  border: 2px solid var(--border);
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 243, 212, 0.7) 0%, rgba(255, 243, 212, 0) 44%),
    radial-gradient(circle at 88% 12%, rgba(210, 238, 255, 0.66) 0%, rgba(210, 238, 255, 0) 42%),
    linear-gradient(125deg, rgba(255, 255, 255, 0.94), rgba(248, 255, 251, 0.92));
  box-shadow: 4px 4px 0 rgba(20, 83, 45, 0.22);
  padding: 0.72rem;
  margin: 0.2rem 0 0.75rem;
  position: relative;
  cursor: default;
  transition: box-shadow 140ms ease, border-color 120ms ease;
}

:root[data-theme="dark"] .music-player {
  background:
    radial-gradient(circle at 14% 12%, rgba(82, 109, 50, 0.26) 0%, rgba(82, 109, 50, 0) 46%),
    radial-gradient(circle at 86% 10%, rgba(41, 95, 124, 0.3) 0%, rgba(41, 95, 124, 0) 44%),
    linear-gradient(128deg, rgba(18, 34, 28, 0.94), rgba(15, 30, 25, 0.92));
  box-shadow: 4px 4px 0 var(--shadow-strong);
}

.music-player-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.5rem;
}

.music-player-title,
.sheet-music-title {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.music-player-track-select {
  width: 100%;
  margin-top: 0.5rem;
}

.music-player audio {
  display: block;
  width: 100%;
  margin-top: 0.4rem;
}

.sheet-music-panel {
  border: 2px solid var(--border);
  background: var(--surface-solid);
  box-shadow: 2px 2px 0 rgba(20, 83, 45, 0.16);
  padding: 0.7rem;
  margin: 0.2rem 0 0.75rem;
}

.sheet-music-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

.lightbox {
  border: 0;
  width: min(96vw, 1240px);
  background: transparent;
}

.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.86);
}

.lightbox-card {
  border: 2px solid #ffffffa1;
  background: #0f100fe0;
  padding: 0.75rem;
}

.lightbox-controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.45rem;
  margin-bottom: 0.55rem;
}

.lightbox-btn {
  border: 2px solid #ffffffa1;
  color: #fdfbf7;
  background: transparent;
  font-family: inherit;
  padding: 0.25rem 0.6rem;
  text-transform: lowercase;
}

.lightbox-image-wrap {
  max-height: 82vh;
  overflow: auto;
  border: 2px solid #ffffff78;
  background: #0000005c;
  display: grid;
  place-items: center;
}

.lightbox-image {
  max-width: 100%;
  max-height: 80vh;
  transform-origin: center center;
}

.flame-trail {
  --trail-dx: 0px;
  --trail-dy: -24px;
  --trail-scale: 0.45;
  --trail-rotate: 0deg;
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  opacity: 1;
  will-change: transform, opacity;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.35));
}

.flame-trail.is-fading {
  opacity: 0;
  transform: translate(-50%, -50%) translate(var(--trail-dx), var(--trail-dy)) scale(var(--trail-scale)) rotate(var(--trail-rotate));
  transition: opacity 760ms ease, transform 760ms cubic-bezier(0.2, 0.72, 0.2, 1);
}

.swear-trail {
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  opacity: 1;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.3));
}

.swear-trail.is-fading {
  opacity: 0;
  transform: translate(-50%, -50%) translateY(-20px) scale(0.6);
  transition: opacity 760ms ease, transform 760ms ease;
}

.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  font-size: 28px;
  line-height: 1;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.45));
  transition: font-size 120ms ease;
}

.custom-cursor.clicking {
  font-size: 22px;
}

.custom-cursor.is-hidden {
  pointer-events: none;
  opacity: 0;
}

.error404-body {
  --error-bg: #f7f4ef;
  --error-text: #1b1917;
  --error-subtle: rgba(27, 25, 23, 0.72);
  --error-line: rgba(29, 26, 22, 0.18);
  --error-accent: #26221d;
  --error-shell-col1: minmax(240px, 33vw);
  --error-shell-col2: minmax(0, 600px);
  --error-code-size: clamp(6.4rem, 18vw, 15.2rem);
  --error-code-spacing: -0.065em;
  --error-code-opacity: 0.1;
  --error-title-size: clamp(2.3rem, 6.3vw, 5rem);
  --error-title-max: 10.8ch;
  --error-title-line: 0.98;
  --error-title-spacing: -0.01em;
  --error-card-width: min(600px, 100%);
  --error-link-size: 0.71rem;
  --error-link-spacing: 0.15em;
  min-height: 100vh;
  margin: 0;
  color: var(--error-text);
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px),
    var(--error-bg);
  background-size: 28px 28px, 28px 28px, auto;
}

:root[data-theme="dark"] .error404-body {
  --error-bg: #090f10;
  --error-text: #e7fff1;
  --error-subtle: rgba(231, 255, 241, 0.88);
  --error-line: rgba(158, 233, 189, 0.2);
  --error-accent: #f2fff7;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    var(--error-bg);
}

:root[data-theme="dark"] .error404-card {
  background: rgba(12, 22, 18, 0.78);
}

:root[data-theme="dark"] .error404-card::before {
  background:
    radial-gradient(circle at 18% 24%, rgba(59, 109, 87, 0.74), transparent 46%),
    radial-gradient(circle at 82% 22%, rgba(31, 84, 117, 0.68), transparent 49%),
    radial-gradient(circle at 74% 78%, rgba(35, 98, 71, 0.7), transparent 51%),
    radial-gradient(circle at 12% 82%, rgba(127, 104, 54, 0.66), transparent 44%),
    linear-gradient(140deg, rgba(16, 30, 24, 0.94), rgba(15, 34, 44, 0.92), rgba(18, 38, 28, 0.92));
  background-size: 135% 135%, 140% 140%, 145% 145%, 140% 140%, 170% 170%;
  animation: error404-card-gradient 5.8s ease-in-out infinite;
}

:root[data-theme="dark"] .error404-title,
:root[data-theme="dark"] .error404-markdown h2,
:root[data-theme="dark"] .error404-markdown h3,
:root[data-theme="dark"] .error404-markdown h4,
:root[data-theme="dark"] .error404-markdown h5,
:root[data-theme="dark"] .error404-markdown h6,
:root[data-theme="dark"] .error404-markdown p,
:root[data-theme="dark"] .error404-markdown li,
:root[data-theme="dark"] .error404-markdown blockquote,
:root[data-theme="dark"] .error404-markdown code,
:root[data-theme="dark"] .error404-link {
  color: var(--error-text);
}

:root[data-theme="dark"] .error404-markdown a,
:root[data-theme="dark"] .error404-link:hover {
  color: #ffffff;
  border-color: #ffffff;
}

.error404-body.error404-variant-a {
  --error-shell-col1: minmax(200px, 30vw);
  --error-shell-col2: minmax(0, 620px);
  --error-code-size: clamp(5.8rem, 16vw, 13.8rem);
  --error-code-spacing: -0.055em;
  --error-code-opacity: 0.08;
  --error-title-size: clamp(2.05rem, 5.5vw, 4.3rem);
  --error-title-max: 12ch;
  --error-title-line: 1.02;
  --error-title-spacing: 0;
  --error-card-width: min(620px, 100%);
  --error-link-size: 0.74rem;
  --error-link-spacing: 0.12em;
}

.error404-body.error404-variant-b {
  --error-code-opacity: 0.1;
}

.error404-body.error404-variant-c {
  --error-shell-col1: minmax(260px, 36vw);
  --error-shell-col2: minmax(0, 560px);
  --error-code-size: clamp(6.9rem, 20vw, 16.2rem);
  --error-code-spacing: -0.075em;
  --error-code-opacity: 0.13;
  --error-title-size: clamp(2.45rem, 6.8vw, 5.3rem);
  --error-title-max: 9.8ch;
  --error-title-line: 0.95;
  --error-title-spacing: -0.018em;
  --error-card-width: min(560px, 100%);
  --error-link-size: 0.69rem;
  --error-link-spacing: 0.17em;
}

.error404-shell {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--error-shell-col1) var(--error-shell-col2);
  align-items: center;
  justify-content: center;
  gap: clamp(1.1rem, 4vw, 4.5rem);
  padding: clamp(1.1rem, 4vw, 4rem);
  overflow: hidden;
}

.error404-shell > .site-footer {
  grid-column: 1 / -1;
  width: 100%;
  justify-self: stretch;
}

.error404-noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image: radial-gradient(rgba(0, 0, 0, 0.08) 0.38px, transparent 0.38px);
  background-size: 4px 4px;
  mix-blend-mode: multiply;
}

.error404-brand {
  position: relative;
  z-index: 1;
  align-self: stretch;
  display: grid;
  place-items: center;
  gap: 1.2rem;
}

.error404-brand-line {
  width: min(180px, 72%);
  height: 1px;
  background: var(--error-line);
}

.error404-code {
  font-family: "Inter Variable", "Literata", serif;
  font-size: var(--error-code-size);
  line-height: 0.8;
  letter-spacing: var(--error-code-spacing);
  color: rgba(230, 245, 236, calc(var(--error-code-opacity) + 0.04));
  user-select: none;
  position: relative;
  display: inline-block;
  text-shadow:
    -3px 0 rgba(255, 36, 86, 0.45),
    3px 0 rgba(54, 220, 255, 0.42),
    -1px 1px rgba(120, 255, 108, 0.34),
    1px -1px rgba(255, 214, 77, 0.34),
    0 0 2px rgba(193, 255, 217, 0.38);
  animation:
    error404-code-reveal 700ms ease both,
    error404-code-jitter 1.15s steps(1, end) infinite,
    error404-crt-phosphor 1.35s linear infinite;
}

.error404-code::before,
.error404-code::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.8;
  mix-blend-mode: screen;
  filter: contrast(1.12) saturate(1.25);
}

.error404-code::before {
  color: rgba(255, 61, 196, 0.78);
  text-shadow:
    -2px 0 rgba(255, 54, 54, 0.62),
    -4px 0 rgba(255, 219, 83, 0.38);
  transform: translate(-2px, 0);
  clip-path: polygon(0 2%, 100% 0, 100% 18%, 0 22%);
  animation:
    error404-glitch-before 0.85s steps(2, end) infinite,
    error404-crt-channel-a 0.72s linear infinite;
}

.error404-code::after {
  color: rgba(72, 223, 255, 0.78);
  text-shadow:
    2px 0 rgba(64, 255, 133, 0.55),
    4px 0 rgba(114, 143, 255, 0.42);
  transform: translate(2px, 0);
  clip-path: polygon(0 72%, 100% 68%, 100% 100%, 0 100%);
  animation:
    error404-glitch-after 0.74s steps(2, end) infinite,
    error404-crt-channel-b 0.66s linear infinite;
}

.error404-card {
  position: relative;
  z-index: 1;
  width: var(--error-card-width);
  border-left: 1px solid var(--error-line);
  padding: clamp(1.15rem, 2.8vw, 2rem) clamp(1rem, 3.2vw, 2.1rem);
  background: rgba(255, 250, 245, 0.72);
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(56, 47, 39, 0.08);
  animation: error404-card-reveal 580ms ease both;
}

.error404-card::before {
  content: "";
  position: absolute;
  inset: -24%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 24%, rgba(255, 228, 237, 0.78), transparent 46%),
    radial-gradient(circle at 82% 22%, rgba(225, 238, 255, 0.76), transparent 49%),
    radial-gradient(circle at 74% 78%, rgba(214, 244, 228, 0.75), transparent 51%),
    radial-gradient(circle at 12% 82%, rgba(255, 242, 210, 0.72), transparent 44%),
    linear-gradient(140deg, rgba(255, 250, 242, 0.92), rgba(239, 248, 255, 0.9), rgba(237, 250, 244, 0.9));
  background-size: 135% 135%, 140% 140%, 145% 145%, 140% 140%, 170% 170%;
  animation: error404-card-gradient 5.5s ease-in-out infinite;
}

.error404-card > * {
  position: relative;
  z-index: 1;
}

.error404-eyebrow {
  margin: 0;
  font-family: "Inter Variable", "Literata", serif;
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--error-subtle);
  opacity: 0.75;
}

.error404-kicker {
  margin: 0.5rem 0 0;
  font-family: "Inter Variable", "Literata", serif;
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--error-subtle);
  opacity: 0.85;
}

.error404-title {
  margin: 0.62rem 0 1.35rem;
  max-width: var(--error-title-max);
  font-weight: 460;
  line-height: var(--error-title-line);
  letter-spacing: var(--error-title-spacing);
  font-size: var(--error-title-size);
  color: var(--error-text);
  text-wrap: balance;
}

.error404-markdown {
  position: relative;
}

.error404-markdown h2,
.error404-markdown h3,
.error404-markdown h4,
.error404-markdown h5,
.error404-markdown h6 {
  margin-top: 1.2rem;
}

.error404-markdown p,
.error404-markdown li,
.error404-markdown blockquote,
.error404-markdown code {
  color: var(--error-subtle);
  font-size: clamp(0.96rem, 1.5vw, 1.04rem);
}

.error404-markdown .markdown-rotation {
  color: var(--error-subtle);
}

.error404-markdown p,
.error404-markdown li,
.error404-markdown blockquote {
  line-height: 1.68;
  max-width: 45ch;
}

.error404-markdown ul,
.error404-markdown ol {
  margin: 0.3rem 0 1rem;
}

.error404-markdown a {
  color: var(--error-text);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

.error404-markdown a:hover {
  color: var(--error-accent);
}

.error404-actions {
  margin-top: 1.55rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.35rem;
}

.error404-link {
  font-family: "Inter Variable", "Literata", serif;
  font-size: var(--error-link-size);
  letter-spacing: var(--error-link-spacing);
  text-transform: uppercase;
  color: var(--error-subtle);
  text-decoration: none;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid var(--error-line);
  transition: color 140ms ease, border-color 140ms ease;
}

.error404-link:hover {
  color: var(--error-text);
  border-color: var(--error-text);
}

@keyframes error404-code-reveal {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes error404-code-jitter {
  0%,
  24%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  5% {
    transform: translate3d(-2px, 1px, 0) skewX(-3deg);
  }
  6% {
    transform: translate3d(3px, -1px, 0) skewX(2deg);
  }
  7% {
    transform: translate3d(-1px, 2px, 0) skewX(-1deg);
  }
  8% {
    transform: translate3d(0, 0, 0);
  }
  26% {
    transform: translate3d(2px, 0, 0) skewX(1deg);
  }
  27% {
    transform: translate3d(-3px, -1px, 0) skewX(-2deg);
  }
  28% {
    transform: translate3d(2px, 1px, 0) skewX(2deg);
  }
  29% {
    transform: translate3d(0, 0, 0);
  }
  52% {
    transform: translate3d(-1px, 0, 0) skewX(2deg);
  }
  53% {
    transform: translate3d(4px, 1px, 0) skewX(-4deg);
  }
  54% {
    transform: translate3d(-2px, -1px, 0) skewX(3deg);
  }
  55% {
    transform: translate3d(0, 0, 0);
  }
  76% {
    transform: translate3d(2px, -1px, 0) skewX(-2deg);
  }
  77% {
    transform: translate3d(-4px, 0, 0) skewX(4deg);
  }
  78% {
    transform: translate3d(1px, 1px, 0) skewX(-1deg);
  }
  79% {
    transform: translate3d(0, 0, 0);
  }
}

@keyframes error404-crt-phosphor {
  0%,
  100% {
    filter: saturate(1.05) contrast(1.02) hue-rotate(0deg);
    text-shadow:
      -3px 0 rgba(255, 36, 86, 0.45),
      3px 0 rgba(54, 220, 255, 0.42),
      -1px 1px rgba(120, 255, 108, 0.34),
      1px -1px rgba(255, 214, 77, 0.34),
      0 0 2px rgba(193, 255, 217, 0.38);
  }
  30% {
    filter: saturate(1.26) contrast(1.14) hue-rotate(8deg);
    text-shadow:
      -4px 0 rgba(255, 71, 132, 0.5),
      4px 0 rgba(76, 228, 255, 0.46),
      -2px 1px rgba(145, 255, 128, 0.38),
      2px -1px rgba(255, 228, 98, 0.36),
      0 0 4px rgba(202, 255, 222, 0.44);
  }
  65% {
    filter: saturate(1.34) contrast(1.2) hue-rotate(-10deg);
    text-shadow:
      -5px 0 rgba(255, 56, 114, 0.55),
      5px 0 rgba(74, 245, 255, 0.5),
      -2px 2px rgba(167, 255, 136, 0.4),
      2px -2px rgba(255, 236, 116, 0.38),
      0 0 5px rgba(212, 255, 226, 0.48);
  }
}

@keyframes error404-crt-channel-a {
  0%,
  100% {
    transform: translate(-2px, 0);
    filter: hue-rotate(0deg) saturate(1.25);
  }
  35% {
    transform: translate(-5px, 1px);
    filter: hue-rotate(16deg) saturate(1.45);
  }
  70% {
    transform: translate(-3px, -1px);
    filter: hue-rotate(-14deg) saturate(1.55);
  }
}

@keyframes error404-crt-channel-b {
  0%,
  100% {
    transform: translate(2px, 0);
    filter: hue-rotate(0deg) saturate(1.25);
  }
  40% {
    transform: translate(5px, -1px);
    filter: hue-rotate(-12deg) saturate(1.5);
  }
  78% {
    transform: translate(3px, 1px);
    filter: hue-rotate(18deg) saturate(1.45);
  }
}

@keyframes error404-glitch-before {
  0%,
  100% {
    transform: translateX(0);
    clip-path: polygon(0 2%, 100% 0, 100% 18%, 0 22%);
    opacity: 0.08;
  }
  10% {
    transform: translate(-8px, -1px);
    clip-path: polygon(0 0, 100% 2%, 100% 14%, 0 20%);
    opacity: 0.72;
  }
  22% {
    transform: translate(6px, 1px);
    clip-path: polygon(0 16%, 100% 12%, 100% 36%, 0 40%);
    opacity: 0.55;
  }
  41% {
    transform: translate(-5px, 0);
    clip-path: polygon(0 42%, 100% 40%, 100% 58%, 0 62%);
    opacity: 0.66;
  }
  63% {
    transform: translate(7px, -2px);
    clip-path: polygon(0 62%, 100% 58%, 100% 76%, 0 82%);
    opacity: 0.58;
  }
  84% {
    transform: translate(-6px, 1px);
    clip-path: polygon(0 82%, 100% 80%, 100% 100%, 0 100%);
    opacity: 0.64;
  }
}

@keyframes error404-glitch-after {
  0%,
  100% {
    transform: translateX(0);
    clip-path: polygon(0 72%, 100% 68%, 100% 100%, 0 100%);
    opacity: 0.08;
  }
  8% {
    transform: translate(8px, 1px);
    clip-path: polygon(0 4%, 100% 2%, 100% 20%, 0 24%);
    opacity: 0.62;
  }
  26% {
    transform: translate(-7px, -1px);
    clip-path: polygon(0 22%, 100% 18%, 100% 38%, 0 44%);
    opacity: 0.52;
  }
  47% {
    transform: translate(6px, 1px);
    clip-path: polygon(0 44%, 100% 40%, 100% 60%, 0 64%);
    opacity: 0.68;
  }
  68% {
    transform: translate(-8px, 0);
    clip-path: polygon(0 62%, 100% 58%, 100% 80%, 0 84%);
    opacity: 0.5;
  }
  88% {
    transform: translate(5px, -1px);
    clip-path: polygon(0 80%, 100% 78%, 100% 100%, 0 100%);
    opacity: 0.65;
  }
}

@keyframes error404-card-reveal {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes error404-card-gradient {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    background-position: 0% 20%, 100% 0%, 80% 100%, 0% 90%, 0% 40%;
    filter: hue-rotate(0deg) saturate(1);
  }
  25% {
    transform: translate3d(2.5%, -2%, 0) scale(1.03);
    background-position: 16% 38%, 78% 8%, 100% 84%, 14% 100%, 45% 60%;
    filter: hue-rotate(4deg) saturate(1.04);
  }
  50% {
    transform: translate3d(-2%, 2%, 0) scale(1.05);
    background-position: 35% 68%, 62% 24%, 86% 62%, 30% 82%, 100% 70%;
    filter: hue-rotate(8deg) saturate(1.08);
  }
  75% {
    transform: translate3d(2%, 1%, 0) scale(1.02);
    background-position: 82% 56%, 18% 36%, 52% 86%, 68% 100%, 58% 26%;
    filter: hue-rotate(4deg) saturate(1.04);
  }
  100% {
    transform: translate3d(0, 0, 0) scale(1);
    background-position: 0% 20%, 100% 0%, 80% 100%, 0% 90%, 0% 40%;
    filter: hue-rotate(0deg) saturate(1);
  }
}

@keyframes site-card-gradient-shift {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    background-position: 0% 20%, 100% 0%, 80% 100%, 0% 90%, 0% 40%;
    filter: hue-rotate(0deg) saturate(1);
  }
  25% {
    transform: translate3d(2.2%, -1.8%, 0) scale(1.03);
    background-position: 18% 36%, 78% 10%, 100% 84%, 14% 100%, 45% 60%;
    filter: hue-rotate(5deg) saturate(1.05);
  }
  50% {
    transform: translate3d(-1.8%, 1.8%, 0) scale(1.05);
    background-position: 34% 68%, 62% 24%, 86% 62%, 30% 82%, 100% 70%;
    filter: hue-rotate(9deg) saturate(1.1);
  }
  75% {
    transform: translate3d(1.8%, 1%, 0) scale(1.02);
    background-position: 82% 56%, 18% 36%, 52% 86%, 68% 100%, 58% 26%;
    filter: hue-rotate(5deg) saturate(1.05);
  }
  100% {
    transform: translate3d(0, 0, 0) scale(1);
    background-position: 0% 20%, 100% 0%, 80% 100%, 0% 90%, 0% 40%;
    filter: hue-rotate(0deg) saturate(1);
  }
}

@keyframes site-surface-gradient-flow {
  0% {
    background-position: 0% 25%;
  }
  25% {
    background-position: 55% 35%;
  }
  50% {
    background-position: 100% 72%;
  }
  75% {
    background-position: 46% 100%;
  }
  100% {
    background-position: 0% 25%;
  }
}

@keyframes card-shadow-pulse {
  0% {
    box-shadow: calc(2px + var(--shadow-dx-md)) calc(2px + var(--shadow-dy-md)) 0 rgba(20, 83, 45, 0.2);
  }
  50% {
    box-shadow: calc(2px + var(--shadow-dx-md)) calc(2px + var(--shadow-dy-md)) 0 rgba(20, 83, 45, 0.2);
  }
  100% {
    box-shadow: calc(2px + var(--shadow-dx-md)) calc(2px + var(--shadow-dy-md)) 0 rgba(20, 83, 45, 0.2);
  }
}

@keyframes card-shadow-pulse-dark {
  0% {
    box-shadow: calc(4px + var(--shadow-dx-md)) calc(4px + var(--shadow-dy-md)) 0 var(--shadow-strong);
  }
  50% {
    box-shadow: calc(4px + var(--shadow-dx-md)) calc(4px + var(--shadow-dy-md)) 0 var(--shadow-strong);
  }
  100% {
    box-shadow: calc(4px + var(--shadow-dx-md)) calc(4px + var(--shadow-dy-md)) 0 var(--shadow-strong);
  }
}

@keyframes footer-shadow-pulse {
  0% {
    box-shadow: calc(10px + var(--shadow-dx-lg)) calc(10px + var(--shadow-dy-lg)) 0 var(--shadow-strong);
  }
  50% {
    box-shadow: calc(10px + var(--shadow-dx-lg)) calc(10px + var(--shadow-dy-lg)) 0 var(--shadow-strong);
  }
  100% {
    box-shadow: calc(10px + var(--shadow-dx-lg)) calc(10px + var(--shadow-dy-lg)) 0 var(--shadow-strong);
  }
}

@keyframes footer-shadow-pulse-mobile {
  0% {
    box-shadow: calc(4px + var(--shadow-dx-sm)) calc(4px + var(--shadow-dy-sm)) 0 var(--shadow-strong);
  }
  50% {
    box-shadow: calc(4px + var(--shadow-dx-sm)) calc(4px + var(--shadow-dy-sm)) 0 var(--shadow-strong);
  }
  100% {
    box-shadow: calc(4px + var(--shadow-dx-sm)) calc(4px + var(--shadow-dy-sm)) 0 var(--shadow-strong);
  }
}

@keyframes blink-cursor {
  0%,
  48% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --mobile-scale: 0.7;
  }

  body {
    overflow-x: hidden;
  }

  .page-shell {
    overflow: auto;
    padding: 0.2rem;
  }

  .page-shell .app-frame {
    width: calc(100% / var(--mobile-scale));
    min-height: calc(92vh / var(--mobile-scale));
    margin: 0;
    position: relative;
    left: 50%;
    transform: translateX(-50%) scale(var(--mobile-scale));
    transform-origin: top center;
  }

  .app-frame {
    grid-template-columns: 1fr;
    box-shadow: 4px 4px 0 var(--shadow-strong);
    animation-name: footer-shadow-pulse-mobile;
  }

  .site-footer {
    box-shadow: 4px 4px 0 var(--shadow-strong);
    animation-name: footer-shadow-pulse-mobile;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 2px solid var(--border);
    padding: 0.65rem;
  }

  .content {
    padding: 0.65rem;
  }

  .sidebar-actions,
  .intro-card,
  .section-markdown,
  .home-language-switcher,
  .card,
  .project-card,
  .blog-card,
  .experience-card,
  .modal-card,
  .music-post-meta,
  .music-player,
  .sheet-music-panel,
  .lightbox-card {
    padding: 0.6rem;
  }

  .markdown-content pre code.hljs,
  .markdown-content .md-code-toolbar {
    padding: 0.5rem 0.6rem;
  }

  .button,
  .open-btn,
  .theme-toggle,
  .lightbox-btn {
    padding: 0.3rem 0.6rem;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .card-image {
    height: 180px;
  }

  .animals-layer {
    display: none;
  }

  .error404-shell {
    width: calc(100% / var(--mobile-scale));
    min-height: calc(100vh / var(--mobile-scale));
    padding: 0.55rem;
    position: relative;
    left: 50%;
    transform: translateX(-50%) scale(var(--mobile-scale));
    transform-origin: top center;
    grid-template-columns: 1fr;
    gap: 0.4rem;
    align-content: center;
  }

  .error404-brand {
    justify-self: start;
  }

  .error404-code {
    font-size: clamp(4.9rem, 24vw, 9.2rem);
  }

  .error404-card {
    border-left: 0;
    border-top: 1px solid var(--error-line);
    padding-top: 0.8rem;
  }

  .error404-title {
    max-width: 11.5ch;
    line-height: 1;
  }

  .error404-markdown p,
  .error404-markdown li,
  .error404-markdown blockquote {
    max-width: 40ch;
  }

  .error404-actions {
    gap: 0.8rem 1rem;
  }

  .error404-link {
    font-size: 0.76rem;
  }

  .site-footer {
    margin-top: 0.45rem;
    padding: 0.5rem 0.6rem;
  }

  .theme-toggle {
    width: auto;
    text-align: center;
  }

  .theme-choice-group {
    width: 100%;
    justify-content: space-between;
  }

  .site-footer-text--theme {
    width: 100%;
    margin-left: 0;
    text-align: right;
  }
}