:root {
  --font-sans: "Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Space Grotesk", "Segoe UI", system-ui, -apple-system, sans-serif;
  --bg: #f5f6fb;
  --text: #1f2330;
  --accent: #4f46e5;
  --bg-rgb: 245 246 251;
  --text-rgb: 31 35 48;
  --accent-rgb: 79 70 229;
  --muted: rgba(var(--text-rgb), 0.6);
  --border: rgba(var(--text-rgb), 0.12);
  --inline-code-bg: rgba(var(--accent-rgb), 0.12);
  --inline-code-text: var(--text);
  --code-bg: rgba(var(--accent-rgb), 0.08);
  --code-border: rgba(var(--text-rgb), 0.12);
}

[data-theme="dark"] {
  --bg: #0f121c;
  --text: #e6e9f2;
  --accent: #818cf8;
  --bg-rgb: 15 18 28;
  --text-rgb: 230 233 242;
  --accent-rgb: 129 140 248;
  --muted: rgba(var(--text-rgb), 0.62);
  --border: rgba(var(--text-rgb), 0.12);
  --inline-code-bg: rgba(var(--accent-rgb), 0.18);
  --inline-code-text: var(--text);
  --code-bg: rgba(var(--accent-rgb), 0.14);
  --code-border: rgba(var(--text-rgb), 0.14);
}

:root[data-palette="ember"] {
  --bg: #fff6ee;
  --text: #2b1b14;
  --accent: #c2410c;
  --bg-rgb: 255 246 238;
  --text-rgb: 43 27 20;
  --accent-rgb: 194 65 12;
}

:root[data-theme="dark"][data-palette="ember"] {
  --bg: #1b120e;
  --text: #f4e9e2;
  --accent: #f97316;
  --bg-rgb: 27 18 14;
  --text-rgb: 244 233 226;
  --accent-rgb: 249 115 22;
}

:root[data-palette="maroon"] {
  --bg: #fff4f2;
  --text: #2a1a1a;
  --accent: #9f1239;
  --bg-rgb: 255 244 242;
  --text-rgb: 42 26 26;
  --accent-rgb: 159 18 57;
}

:root[data-theme="dark"][data-palette="maroon"] {
  --bg: #1b1012;
  --text: #f4e6ea;
  --accent: #fb7185;
  --bg-rgb: 27 16 18;
  --text-rgb: 244 230 234;
  --accent-rgb: 251 113 133;
}

:root[data-palette="violet"] {
  --bg: #f6f3ff;
  --text: #221c2d;
  --accent: #7c3aed;
  --bg-rgb: 246 243 255;
  --text-rgb: 34 28 45;
  --accent-rgb: 124 58 237;
}

:root[data-theme="dark"][data-palette="violet"] {
  --bg: #13101c;
  --text: #eee9ff;
  --accent: #a78bfa;
  --bg-rgb: 19 16 28;
  --text-rgb: 238 233 255;
  --accent-rgb: 167 139 250;
}

:root[data-palette="indigo"] {
  --bg: #f4f5ff;
  --text: #1d1f2f;
  --accent: #4f46e5;
  --bg-rgb: 244 245 255;
  --text-rgb: 29 31 47;
  --accent-rgb: 79 70 229;
}

:root[data-theme="dark"][data-palette="indigo"] {
  --bg: #0f1222;
  --text: #e3e7ff;
  --accent: #818cf8;
  --bg-rgb: 15 18 34;
  --text-rgb: 227 231 255;
  --accent-rgb: 129 140 248;
}

:root[data-palette="rose"] {
  --bg: #fff1f6;
  --text: #2a1b22;
  --accent: #db2777;
  --bg-rgb: 255 241 246;
  --text-rgb: 42 27 34;
  --accent-rgb: 219 39 119;
}

:root[data-theme="dark"][data-palette="rose"] {
  --bg: #1b0f16;
  --text: #f7e7f0;
  --accent: #f472b6;
  --bg-rgb: 27 15 22;
  --text-rgb: 247 231 240;
  --accent-rgb: 244 114 182;
}

:root[data-palette="graphite"] {
  --bg: #f6f6f5;
  --text: #1f2328;
  --accent: #3f4b5a;
  --bg-rgb: 246 246 245;
  --text-rgb: 31 35 40;
  --accent-rgb: 63 75 90;
}

:root[data-theme="dark"][data-palette="graphite"] {
  --bg: #121417;
  --text: #e6e7e8;
  --accent: #94a3b8;
  --bg-rgb: 18 20 23;
  --text-rgb: 230 231 232;
  --accent-rgb: 148 163 184;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.7;
  position: relative;
  isolation: isolate;
}

.ambient-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.75;
  filter: blur(20px) saturate(145%);
  mix-blend-mode: screen;
}

.ambient-bg[data-theme="light"],
[data-theme="light"] .ambient-bg {
  opacity: 0.9;
  filter: blur(18px) saturate(170%);
  mix-blend-mode: multiply;
}

.ambient-glass {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: rgba(var(--bg-rgb), 0.45);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  pointer-events: none;
}

[data-theme="light"] .ambient-glass {
  background: rgba(var(--bg-rgb), 0.3);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.ambient-grain {
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(rgba(var(--text-rgb), 0.12) 0.45px, transparent 0.6px),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%%' height='100%%' filter='url(%23n)' opacity='0.35'/></svg>");
  background-size: 3px 3px, 220px 220px;
  opacity: 0.14;
  filter: blur(0.25px);
  mix-blend-mode: soft-light;
  pointer-events: none;
  z-index: 2;
}

[data-theme="light"] .ambient-grain {
  opacity: 0.18;
}

::selection {
  background: rgba(var(--accent-rgb), 0.25);
}

img,
video {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.image-block {
  margin: 1.6rem auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
}

.image-button {
  border: none;
  background: transparent;
  padding: 0;
  cursor: zoom-in;
  width: fit-content;
  max-width: 100%;
}

.image-button img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.22);
}

.image-caption {
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
  max-width: 72ch;
}

.img-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.img-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(var(--bg-rgb), 0.45);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
}

.img-modal__content {
  position: relative;
  z-index: 1;
  width: min(92vw, 1100px);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(var(--bg-rgb), 0.8);
  border: 1px solid var(--border);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  transform: translateY(10px);
  transition: transform 0.2s ease;
}

.img-modal__image {
  width: 100%;
  height: auto;
  max-height: 75vh;
  object-fit: contain;
  border-radius: 14px;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.3);
}

.img-modal__caption {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.img-modal__close {
  align-self: flex-end;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(var(--bg-rgb), 0.6);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

.img-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.img-modal.is-open .img-modal__content {
  transform: translateY(0);
}

.modal-open {
  overflow: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.page {
  min-height: 100vh;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 3;
}

.site-header,
.main,
.site-footer {
  width: min(90vw, 1400px);
  margin: 0 auto;
}

.site-header {
  padding: 2.5rem 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brand-link {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.brand-sub {
  font-size: 0.95rem;
  color: var(--muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-item:hover {
  color: var(--accent);
  border-bottom-color: rgba(var(--accent-rgb), 0.4);
}

.nav-item.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-icon svg,
.nav-icon img {
  width: 1rem;
  height: 1rem;
  display: block;
}

.search-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  border-bottom: 2px solid transparent;
  padding: 0.2rem 0;
}

.search-link:hover {
  color: var(--accent);
  border-bottom-color: rgba(var(--accent-rgb), 0.4);
}

.theme-toggle {
  border: none;
  background: transparent;
  padding: 0.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  cursor: pointer;
  transition: color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--accent);
}

.icon-sun {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: inline-flex;
}

[data-theme="dark"] .icon-moon {
  display: none;
}

.main {
  flex: 1;
  padding: 1.5rem 0 4rem;
  animation: rise 0.5s ease both;
}

.hero {
  margin-bottom: 3rem;
}

.hero-card {
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  animation: rise 0.7s ease both;
}

.hero-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  font-weight: 600;
}

.hero-card h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 3rem);
  margin: 0.4rem 0 0.6rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  margin: 0 0 1.4rem;
  color: var(--muted);
}

.hero-content {
  font-size: 1rem;
  color: var(--text);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0;
}

.section-link {
  font-weight: 600;
  font-size: 0.95rem;
}

.list {
  display: grid;
  gap: 0;
}

.list-item {
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
  animation: rise 0.35s ease both;
  animation-delay: calc(var(--stagger) * 30ms);
}

.list-item h2,
.list-item h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.list-line {
  gap: 0;
}

.list-item-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
}

.list-item-line h2,
.list-item-line h3 {
  margin: 0;
  font-size: 1.1rem;
  flex: 1;
}

.list-item-line .list-meta {
  margin: 0;
  font-size: 0.85rem;
  white-space: nowrap;
}

.list-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

.list-summary {
  margin: 0;
  color: var(--text);
}

.list-header h1 {
  font-family: var(--font-display);
  font-size: 2.1rem;
  margin: 0 0 0.8rem;
}

.list-intro {
  color: var(--muted);
  margin-bottom: 2rem;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2.5rem;
  font-size: 0.95rem;
}

.page-link {
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  color: var(--text);
}

.page-link:hover {
  color: var(--accent);
  border-bottom-color: rgba(var(--accent-rgb), 0.4);
}

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

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 2.5rem;
}

.content {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

.post-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 3rem);
  margin: 0.4rem 0 0.8rem;
}

.post-kicker {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
}

.post-summary {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 0 1.2rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.6rem;
}

.meta-sep {
  opacity: 0.5;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.8rem;
}

.tag {
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  padding-bottom: 0.1rem;
}

.content-body {
  font-size: 1rem;
}

.content-body h2,
.content-body h3,
.content-body h4 {
  font-family: var(--font-display);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

.content-body h2 {
  font-size: 1.6rem;
}

.content-body h3 {
  font-size: 1.3rem;
}

.content-body p {
  margin: 1rem 0;
}

.content-body ul,
.content-body ol {
  padding-left: 1.4rem;
}

.content-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--accent);
  background: rgba(var(--accent-rgb), 0.08);
  border-radius: 12px;
  color: var(--text);
}

.content-body code {
  font-family: "SFMono-Regular", "JetBrains Mono", "Fira Code", monospace;
  background: var(--inline-code-bg);
  color: var(--inline-code-text);
  padding: 0.2rem 0.35rem;
  border-radius: 6px;
}

.content-body pre {
  background: var(--code-bg);
  color: var(--text);
  padding: 1.2rem;
  border-radius: 12px;
  overflow-x: auto;
  border: 1px solid var(--code-border);
}

.content-body pre code {
  background: transparent;
  padding: 0;
}

.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.content-body th,
.content-body td {
  border: 1px solid var(--border);
  padding: 0.6rem 0.8rem;
  text-align: left;
}

.content-body th {
  background: rgba(var(--accent-rgb), 0.08);
}

.toc {
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.toc-inner {
  padding: 0 0 0 1rem;
  border-left: 1px solid var(--border);
  background: transparent;
  box-shadow: none;
}

.toc-title {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 0.6rem;
  display: block;
}

.toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.toc a {
  display: block;
  padding: 0.2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.notice {
  border-radius: 0;
  padding: 1rem 0 1rem 1rem;
  margin: 1.4rem 0;
  border-left: 3px solid var(--border);
  background: transparent;
}

.notice-title {
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--accent);
}

.notice-tip,
.notice-warning,
.notice-disclaimer,
.notice-disclaimber {
  border-left-color: var(--accent);
}

.not-found {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 0;
}

.not-found-card {
  text-align: center;
  background: transparent;
  border-radius: 0;
  border: none;
  padding: 0;
  box-shadow: none;
}

.not-found-code {
  font-family: var(--font-display);
  font-size: 3rem;
  display: block;
  margin-bottom: 0.5rem;
}

.not-found-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  padding: 0.4rem 0;
  background: transparent;
  color: var(--accent);
  border: none;
  border-bottom: 2px solid var(--accent);
  font-weight: 600;
}

.button.ghost {
  border-bottom-color: rgba(var(--accent-rgb), 0.4);
}

.terms {
  display: grid;
  gap: 0;
}

.term-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.term-count {
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.search-page {
  max-width: 760px;
}

.search-header h1 {
  font-family: var(--font-display);
  font-size: 2.1rem;
  margin: 0 0 0.6rem;
}

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

.search-box {
  margin: 1.8rem 0 1rem;
}

.search-input {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
  padding: 0.6rem 0;
  font-size: 1rem;
  color: var(--text);
}

.search-input:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

.search-status {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.2rem;
}

.search-results {
  display: grid;
  gap: 1.4rem;
}

.search-result a {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text);
}

.search-result a:hover {
  color: var(--accent);
}

.search-result-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.search-result-snippet {
  margin: 0.6rem 0 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-note {
  color: var(--text);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.footer-sep {
  opacity: 0.5;
}

.emphasis-dots em {
  font-style: italic;
  text-decoration: underline dotted;
  text-underline-offset: 0.2em;
}

.numbered-subtitles {
  counter-reset: section;
}

.numbered-subtitles h2 {
  counter-increment: section;
}

.numbered-subtitles h2::before {
  content: counter(section) ". ";
  color: var(--accent);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


@media (max-width: 960px) {
  .site-header,
  .main,
  .site-footer {
    width: 100%;
  }

  .content-grid {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
  }

  .toc {
    position: static;
  }
}

@media (max-width: 720px), (pointer: coarse) {
  .page {
    padding: 0;
  }

  .site-header {
    padding: 2.5rem 1.4rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .main {
    padding: 1.5rem 0.25rem 4rem;
  }

  .site-footer {
    padding: 2rem 1.4rem 3rem;
  }

  .header-controls {
    width: 100%;
    justify-content: flex-start;
  }

  .search-link {
    width: auto;
  }

  .hero-card {
    padding: 1.4rem;
  }

  .home-latest {
    padding: 0 1.4rem;
  }

  .content {
    padding: 0 0.3rem;
  }

  .list-item-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}