:root {
  --bg: #07111f;
  --bg-elevated: rgba(11, 24, 43, 0.82);
  --surface: #0c1830;
  --surface-soft: rgba(14, 28, 50, 0.72);
  --surface-strong: #0f2140;
  --surface-contrast: #f5f7fb;
  --text: #f5f7fb;
  --text-strong: #ffffff;
  --text-soft: #c8d4ea;
  --text-subtle: #93a4bf;
  --accent: #d49a3a;
  --accent-strong: #f0b453;
  --accent-soft: rgba(212, 154, 58, 0.14);
  --line: rgba(149, 177, 224, 0.18);
  --line-strong: rgba(149, 177, 224, 0.32);
  --shadow: 0 24px 48px rgba(3, 8, 17, 0.32);
  --hero-glow: radial-gradient(circle at 72% 28%, rgba(66, 113, 190, 0.24), transparent 24%), radial-gradient(circle at 78% 72%, rgba(27, 67, 140, 0.2), transparent 26%), linear-gradient(180deg, rgba(4, 11, 22, 0.96), rgba(7, 17, 31, 0.98));
  --page-glow: radial-gradient(circle at top, rgba(66, 113, 190, 0.12), transparent 28%), linear-gradient(180deg, #07111f, #09162a);
  --panel-glow: radial-gradient(circle at top left, rgba(212, 154, 58, 0.12), transparent 35%);
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-bg-strong: rgba(255, 255, 255, 0.05);
  --hero-text: #f9fafc;
  --hero-muted: #d5def0;
  --content-bg: #f7f7f5;
  --content-surface: #ffffff;
  --content-line: rgba(11, 23, 42, 0.08);
  --content-text: #0e1a2e;
  --content-muted: #4a5c74;
  --focus: #f3bf66;
  --max-width: 1220px;
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 5rem;
  --body-font: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display-font: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --transition: 180ms ease;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f7fb;
    --bg-elevated: rgba(255, 255, 255, 0.86);
    --surface: #ffffff;
    --surface-soft: rgba(255, 255, 255, 0.72);
    --surface-strong: #eef3fa;
    --surface-contrast: #07111f;
    --text: #0d1a2d;
    --text-strong: #08111e;
    --text-soft: #3f516b;
    --text-subtle: #5b6c83;
    --line: rgba(8, 17, 30, 0.12);
    --line-strong: rgba(8, 17, 30, 0.18);
    --shadow: 0 24px 48px rgba(10, 21, 41, 0.08);
    --hero-glow: radial-gradient(circle at 74% 20%, rgba(112, 149, 221, 0.16), transparent 24%), radial-gradient(circle at 72% 72%, rgba(212, 154, 58, 0.08), transparent 20%), linear-gradient(180deg, #f8fafc, #edf2f8);
    --page-glow: radial-gradient(circle at top, rgba(90, 123, 185, 0.08), transparent 24%), linear-gradient(180deg, #f5f7fb, #eef3fa);
    --panel-glow: radial-gradient(circle at top left, rgba(212, 154, 58, 0.1), transparent 35%);
    --card-bg: rgba(255, 255, 255, 0.88);
    --card-bg-strong: #ffffff;
    --hero-text: #0d1a2d;
    --hero-muted: #43536b;
    --content-bg: #ffffff;
    --content-surface: #f8fafc;
    --content-line: rgba(8, 17, 30, 0.09);
    --content-text: #0d1a2d;
    --content-muted: #42536b;
    --focus: #bf7f14;
  }
}

html[data-theme="dark"] {
  --bg: #07111f;
  --bg-elevated: rgba(11, 24, 43, 0.82);
  --surface: #0c1830;
  --surface-soft: rgba(14, 28, 50, 0.72);
  --surface-strong: #0f2140;
  --surface-contrast: #f5f7fb;
  --text: #f5f7fb;
  --text-strong: #ffffff;
  --text-soft: #c8d4ea;
  --text-subtle: #93a4bf;
  --line: rgba(149, 177, 224, 0.18);
  --line-strong: rgba(149, 177, 224, 0.32);
  --shadow: 0 24px 48px rgba(3, 8, 17, 0.32);
  --hero-glow: radial-gradient(circle at 72% 28%, rgba(66, 113, 190, 0.24), transparent 24%), radial-gradient(circle at 78% 72%, rgba(27, 67, 140, 0.2), transparent 26%), linear-gradient(180deg, rgba(4, 11, 22, 0.96), rgba(7, 17, 31, 0.98));
  --page-glow: radial-gradient(circle at top, rgba(66, 113, 190, 0.12), transparent 28%), linear-gradient(180deg, #07111f, #09162a);
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-bg-strong: rgba(255, 255, 255, 0.05);
  --hero-text: #f9fafc;
  --hero-muted: #d5def0;
  --content-bg: #0a1528;
  --content-surface: #101d34;
  --content-line: rgba(149, 177, 224, 0.14);
  --content-text: #f4f7fb;
  --content-muted: #c3d0e5;
}

html[data-theme="light"] {
  --bg: #f5f7fb;
  --bg-elevated: rgba(255, 255, 255, 0.86);
  --surface: #ffffff;
  --surface-soft: rgba(255, 255, 255, 0.72);
  --surface-strong: #eef3fa;
  --surface-contrast: #07111f;
  --text: #0d1a2d;
  --text-strong: #08111e;
  --text-soft: #3f516b;
  --text-subtle: #5b6c83;
  --line: rgba(8, 17, 30, 0.12);
  --line-strong: rgba(8, 17, 30, 0.18);
  --shadow: 0 24px 48px rgba(10, 21, 41, 0.08);
  --hero-glow: radial-gradient(circle at 74% 20%, rgba(112, 149, 221, 0.16), transparent 24%), radial-gradient(circle at 72% 72%, rgba(212, 154, 58, 0.08), transparent 20%), linear-gradient(180deg, #f8fafc, #edf2f8);
  --page-glow: radial-gradient(circle at top, rgba(90, 123, 185, 0.08), transparent 24%), linear-gradient(180deg, #f5f7fb, #eef3fa);
  --card-bg: rgba(255, 255, 255, 0.88);
  --card-bg-strong: #ffffff;
  --hero-text: #0d1a2d;
  --hero-muted: #43536b;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body-font);
  background: var(--page-glow);
  color: var(--text);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  min-width: 320px;
}

img {
  display: block;
  max-width: 100%;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -3rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--surface-contrast);
  color: var(--bg);
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: var(--space-4);
}

.site-shell {
  width: min(calc(100% - 2.5rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 5.25rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 1.6rem;
  color: var(--hero-text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-nav__list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}

.site-nav__link {
  position: relative;
  padding: 0.35rem 0;
  color: var(--hero-text);
  font-size: 0.96rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-button,
.theme-toggle,
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card-bg);
  color: var(--hero-text);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.icon-button:hover,
.theme-toggle:hover,
.menu-toggle:hover {
  background: var(--card-bg-strong);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.icon-button[aria-disabled="true"] {
  opacity: 0.85;
}

.theme-toggle {
  width: auto;
  gap: 0.65rem;
  padding: 0.35rem 0.5rem;
}

.theme-toggle__track {
  position: relative;
  width: 3rem;
  height: 1.6rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 28%, var(--surface-strong));
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--line));
}

.theme-toggle__thumb {
  position: absolute;
  top: 50%;
  left: 0.18rem;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: #fff8ea;
  transform: translateY(-50%);
  transition: left var(--transition), background var(--transition);
}

html[data-theme="dark"] .theme-toggle__thumb {
  left: 1.55rem;
  background: #fff0c6;
}

.theme-toggle__label {
  font-size: 0.9rem;
  color: var(--hero-text);
}

.menu-toggle {
  display: none;
}

.hero-home {
  position: relative;
  overflow: hidden;
  background: var(--hero-glow);
}

.hero-home::before,
.hero-home::after {
  content: "";
  position: absolute;
  inset: auto;
  pointer-events: none;
}

.hero-home::before {
  width: 48rem;
  height: 48rem;
  right: -18rem;
  top: -14rem;
  background: radial-gradient(circle, rgba(26, 58, 112, 0.24), transparent 58%);
}

.hero-home::after {
  left: 0;
  right: 0;
  bottom: 2rem;
  height: 18rem;
  background: radial-gradient(circle at 70% 30%, rgba(84, 138, 223, 0.22), transparent 16%), radial-gradient(circle at 46% 68%, rgba(212, 154, 58, 0.12), transparent 12%);
  opacity: 0.6;
}

.hero-home__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.2fr);
  gap: var(--space-7);
  padding: var(--space-8) 0 var(--space-9);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 var(--space-4);
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  width: 3rem;
  height: 2px;
  background: currentColor;
}

.hero-home h1,
.page-hero h1,
.content-display {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(2.75rem, 4vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--hero-text);
}

.text-accent {
  color: var(--accent);
}

.hero-home__copy p,
.page-hero__copy p {
  max-width: 38rem;
  color: var(--hero-muted);
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  margin: var(--space-5) 0 0;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: var(--space-6);
}

.button,
.button-secondary,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border-radius: 0.9rem;
  min-height: 3.25rem;
  padding: 0.9rem 1.35rem;
  font-weight: 700;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.button {
  background: linear-gradient(180deg, #d8a145, #c98d31);
  color: #fff;
  border: 1px solid rgba(255, 236, 202, 0.28);
  box-shadow: 0 12px 30px rgba(201, 141, 49, 0.18);
}

.button-secondary {
  background: transparent;
  color: var(--hero-text);
  border: 1px solid var(--line-strong);
}

.button:hover,
.button-secondary:hover,
.text-link:hover {
  transform: translateY(-1px);
}

.quote-block {
  margin: var(--space-7) 0 0;
  padding-left: 1.2rem;
  border-left: 3px solid var(--accent);
}

.quote-block blockquote,
.quote-block p {
  margin: 0;
}

.quote-block blockquote {
  color: var(--hero-text);
  font-size: 1.35rem;
  line-height: 1.45;
}

.quote-block cite {
  display: inline-block;
  margin-top: 0.55rem;
  color: var(--hero-muted);
  font-style: normal;
}

.hero-diagram {
  position: relative;
  padding: 1.75rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg) 68%, transparent), color-mix(in srgb, var(--bg) 82%, transparent));
  box-shadow: var(--shadow);
}

.hero-diagram__title,
.diagram-title {
  margin: 0 0 1.4rem;
  text-align: center;
  color: var(--hero-text);
  font-size: 0.96rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.workflow-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.9rem;
}

.workflow-stage {
  position: relative;
  text-align: center;
  color: var(--hero-text);
}

.workflow-stage::after {
  content: "";
  position: absolute;
  top: 2.2rem;
  left: calc(100% - 0.18rem);
  width: calc(100% - 0.36rem);
  height: 2px;
  background: linear-gradient(90deg, rgba(118, 152, 217, 0.3), rgba(212, 154, 58, 0.9), rgba(118, 152, 217, 0.25));
  background-size: 180% 100%;
  animation: flowLine 6s linear infinite;
}

.workflow-stage:last-child::after {
  display: none;
}

.workflow-stage__icon {
  width: 4.4rem;
  height: 4.4rem;
  margin: 0 auto 0.95rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, currentColor 65%, transparent);
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.1), transparent 70%);
}

.workflow-stage:nth-child(1) { color: #e1a849; }
.workflow-stage:nth-child(2) { color: #97b0ec; }
.workflow-stage:nth-child(3) { color: #89e0d2; }
.workflow-stage:nth-child(4) { color: #c0c8ff; }
.workflow-stage:nth-child(5) { color: #e8b75b; }
.workflow-stage:nth-child(6) { color: #a0b6ff; }
.workflow-stage:nth-child(7) { color: #8fd0f1; }

.workflow-stage h3 {
  margin: 0 0 0.45rem;
  font-size: 0.95rem;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.workflow-stage p {
  margin: 0;
  color: var(--hero-muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.workflow-loop {
  margin-top: 1.2rem;
  border-top: 1px dashed color-mix(in srgb, var(--accent) 48%, var(--line));
  padding-top: 1.1rem;
}

.workflow-loop svg {
  width: 100%;
  height: 4.5rem;
  overflow: visible;
}

.loop-label {
  display: block;
  text-align: center;
  margin-top: -0.2rem;
  color: var(--hero-muted);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.content-band {
  background: var(--content-bg);
  color: var(--content-text);
}

.section-grid {
  display: grid;
  gap: var(--space-7);
  padding: var(--space-8) 0;
}

.home-panels {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: var(--space-7);
  align-items: start;
}

.panel {
  position: relative;
  background: var(--content-surface);
  border: 1px solid var(--content-line);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px rgba(10, 21, 41, 0.06);
  padding: var(--space-6);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--panel-glow);
  pointer-events: none;
}

.panel > * {
  position: relative;
}

.panel h2,
.panel h3,
.page-section h2,
.prose h2,
.contact-card h2,
.callout-card h2 {
  font-family: var(--display-font);
  color: var(--content-text);
  letter-spacing: -0.02em;
}

.panel h2,
.page-section h2,
.prose h2 {
  margin: 0.25rem 0 0.85rem;
  font-size: clamp(2rem, 2.8vw, 3rem);
  line-height: 1.08;
}

.panel p,
.page-section p,
.card p,
.prose p,
.prose li,
.contact-card p,
.meta-list dd {
  color: var(--content-muted);
}

.split-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.text-link {
  min-height: auto;
  padding: 0;
  border-radius: 0;
  font-weight: 700;
  color: var(--content-text);
}

.text-link svg {
  flex: 0 0 auto;
}

.framework-intro {
  display: grid;
  gap: var(--space-5);
}

.model-wheel {
  position: relative;
  width: min(100%, 30rem);
  aspect-ratio: 1;
  margin: var(--space-5) auto 0;
}

.model-wheel__center {
  position: absolute;
  inset: 50%;
  width: 8rem;
  height: 8rem;
  margin: -4rem 0 0 -4rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at top, #1e4da5, #15357b 70%);
  color: #fff;
  text-align: center;
  padding: 1rem;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(21, 53, 123, 0.18);
}

.model-wheel__ring {
  position: absolute;
  inset: 16%;
  border-radius: 50%;
  border: 1px solid rgba(44, 78, 132, 0.16);
}

.model-node {
  position: absolute;
  width: 9.2rem;
  text-align: center;
}

.model-node__badge {
  width: 3.8rem;
  height: 3.8rem;
  margin: 0 auto 0.7rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(44, 78, 132, 0.16);
  background: #fff;
  color: #25406f;
  box-shadow: 0 8px 22px rgba(12, 22, 37, 0.08);
}

.model-node h3 {
  margin: 0;
  color: var(--content-text);
  font-size: 0.88rem;
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.model-node--top {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.model-node--upper-right {
  top: 14%;
  right: -1%;
}

.model-node--lower-right {
  right: 2%;
  bottom: 18%;
}

.model-node--bottom {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.model-node--lower-left {
  bottom: 18%;
  left: 2%;
}

.model-node--upper-left {
  top: 14%;
  left: -1%;
}

.model-node--left {
  top: 41%;
  left: -6%;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
}

.card {
  background: #fff;
  border: 1px solid var(--content-line);
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 18px 30px rgba(10, 21, 41, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover,
.card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 24px 34px rgba(10, 21, 41, 0.09);
}

.card__body {
  padding: 1.15rem 1.15rem 1.3rem;
}

.card__meta {
  margin: 0 0 0.7rem;
  color: #6d7890;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card h3 {
  margin: 0;
  color: var(--content-text);
  font-size: 1.3rem;
  line-height: 1.25;
}

.card__footer {
  margin-top: 1rem;
  color: #24427b;
  font-size: 0.92rem;
  font-weight: 700;
}

.article-visual {
  aspect-ratio: 4 / 3;
  background-color: #112145;
  position: relative;
  overflow: hidden;
}

.article-visual::before,
.article-visual::after {
  content: "";
  position: absolute;
  inset: 0;
}

.visual-network::before {
  background: radial-gradient(circle at 35% 30%, rgba(110, 156, 232, 0.35), transparent 10%), radial-gradient(circle at 62% 62%, rgba(212, 154, 58, 0.22), transparent 14%), linear-gradient(135deg, #081028, #102455);
}

.visual-network::after {
  background-image: linear-gradient(rgba(132, 164, 219, 0.12) 1px, transparent 1px), linear-gradient(90deg, rgba(132, 164, 219, 0.12) 1px, transparent 1px);
  background-size: 1rem 1rem;
  opacity: 0.45;
}

.visual-compass::before {
  background: linear-gradient(180deg, #ced9e8, #607ca0);
}

.visual-compass::after {
  width: 5.5rem;
  height: 5.5rem;
  margin: auto;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.62);
  inset: 0;
  box-shadow: inset 0 0 0 12px rgba(17, 30, 54, 0.35);
}

.visual-ledger::before {
  background: linear-gradient(140deg, #4c2c16, #aa8458 45%, #f0e5d4);
}

.visual-ledger::after {
  left: 26%;
  top: 12%;
  right: 26%;
  bottom: 14%;
  border-radius: 0.5rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(243, 229, 206, 0.9));
  box-shadow: inset 0 0 0 2px rgba(75, 48, 31, 0.12);
  transform: rotate(-8deg);
}

.visual-cubes::before {
  background: linear-gradient(180deg, #061027, #152657);
}

.visual-cubes::after {
  inset: auto;
  width: 65%;
  height: 65%;
  left: 18%;
  top: 18%;
  background:
    linear-gradient(135deg, rgba(212, 154, 58, 0.95), rgba(212, 154, 58, 0.1)) 55% 55% / 22% 22% no-repeat,
    linear-gradient(135deg, rgba(129, 162, 240, 0.96), rgba(129, 162, 240, 0.08)) 35% 32% / 22% 22% no-repeat,
    linear-gradient(135deg, rgba(129, 162, 240, 0.86), rgba(129, 162, 240, 0.08)) 62% 30% / 22% 22% no-repeat,
    linear-gradient(135deg, rgba(129, 162, 240, 0.75), rgba(129, 162, 240, 0.08)) 32% 58% / 22% 22% no-repeat;
  transform: rotate(12deg);
}

.topics-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.95rem;
}

.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 1rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--content-line);
  color: var(--content-text);
  font-weight: 600;
  box-shadow: 0 10px 24px rgba(10, 21, 41, 0.05);
}

.topic-chip svg {
  color: #24427b;
}

.home-closing {
  background: linear-gradient(180deg, #081121, #091529);
  color: #f5f7fb;
  border-top: 1px solid rgba(149, 177, 224, 0.14);
}

.home-closing__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr) minmax(0, 0.9fr);
  gap: var(--space-7);
  padding: var(--space-8) 0;
}

.profile-card {
  display: grid;
  grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
  gap: var(--space-5);
}

.profile-card__image {
  aspect-ratio: 1 / 1;
  border-radius: 1.5rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
}

.profile-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}

.home-closing h2,
.home-closing h3 {
  font-family: var(--display-font);
  color: #fff;
  margin: 0 0 0.9rem;
  letter-spacing: -0.02em;
}

.home-closing p,
.home-closing li {
  color: #cfdaee;
}

.list-clean {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.feature-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
}

.feature-item svg {
  color: var(--accent);
  margin-top: 0.15rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 1rem;
  border: 1px solid rgba(149, 177, 224, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.site-footer {
  border-top: 1px solid rgba(149, 177, 224, 0.14);
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  min-height: 4.75rem;
  color: #c2cfdf;
  font-size: 0.95rem;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.search-open {
  overflow: hidden;
}

.page-hero {
  background: var(--hero-glow);
  border-bottom: 1px solid var(--line);
}

.page-hero__inner {
  display: grid;
  gap: var(--space-6);
  padding: var(--space-8) 0 var(--space-7);
}

.page-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: var(--space-6);
  align-items: start;
}

.callout-card,
.meta-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow);
}

.callout-card h2,
.meta-card h2 {
  margin: 0 0 0.75rem;
  color: var(--hero-text);
  font-size: 1.4rem;
}

.callout-card p,
.meta-card p,
.meta-list dt,
.meta-list dd {
  color: var(--hero-muted);
}

.content-section {
  padding: var(--space-8) 0;
}

.page-section {
  display: grid;
  gap: var(--space-5);
}

.page-section + .page-section {
  margin-top: var(--space-7);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: var(--space-7);
  align-items: start;
}

.content-card,
.article-shell,
.contact-card,
.info-card {
  background: var(--content-surface);
  border: 1px solid var(--content-line);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 16px 34px rgba(10, 21, 41, 0.05);
}

.prose {
  max-width: 74ch;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote {
  margin: 0 0 1.15rem;
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose h2 + p,
.prose h3 + p {
  margin-top: 0.2rem;
}

.prose h3 {
  margin: 2rem 0 0.5rem;
  color: var(--content-text);
  font-size: 1.35rem;
}

.prose blockquote {
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--accent);
  background: rgba(36, 66, 123, 0.05);
  color: var(--content-text);
}

.meta-list {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.meta-list dt {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meta-list dd {
  margin: 0.15rem 0 0;
}

.article-header {
  display: grid;
  gap: 1rem;
  margin-bottom: var(--space-5);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(36, 66, 123, 0.08);
  color: #24427b;
  font-size: 0.86rem;
  font-weight: 700;
}

.author-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  padding-top: 1.2rem;
  border-top: 1px solid var(--content-line);
}

.author-card img {
  width: 4rem;
  height: 4rem;
  border-radius: 1rem;
  object-fit: cover;
  object-position: center 20%;
}

.compact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

.info-card h3,
.content-card h3,
.contact-card h3 {
  margin: 0 0 0.75rem;
  color: var(--content-text);
  font-size: 1.35rem;
}

.contact-card p,
.content-card p,
.info-card p {
  color: var(--content-muted);
}

.site-search {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
}

.site-search.is-open {
  display: block;
}

.site-search__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 10, 19, 0.6);
  backdrop-filter: blur(10px);
}

.site-search__panel {
  position: relative;
  width: min(calc(100% - 2rem), 58rem);
  margin: 6vh auto 0;
  max-height: 88vh;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto auto auto minmax(0, 1fr);
  border-radius: 1.6rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  box-shadow: 0 34px 80px rgba(3, 8, 17, 0.36);
}

.site-search__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.25rem 0.8rem;
}

.site-search__title {
  margin: 0;
  color: var(--hero-text);
  font-family: var(--display-font);
  font-size: clamp(1.6rem, 2vw, 2.2rem);
  line-height: 1.1;
}

.site-search__subtitle,
.site-search__status,
.site-search__empty,
.site-search__meta {
  color: var(--hero-muted);
}

.site-search__subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.98rem;
}

.site-search__close {
  flex: 0 0 auto;
}

.site-search__controls {
  padding: 0 1.25rem;
}

.site-search__field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 1rem;
  border-radius: 1.15rem;
  border: 1px solid var(--line-strong);
  background: var(--card-bg);
}

.site-search__field svg {
  color: var(--hero-muted);
}

.site-search__input {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--hero-text);
  font-size: 1.08rem;
}

.site-search__input::placeholder {
  color: var(--hero-muted);
}

.site-search__hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--hero-muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-search__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1rem 1.25rem 0.35rem;
}

.site-search__chip {
  display: inline-flex;
  align-items: center;
  min-height: 2.4rem;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card-bg);
  color: var(--hero-text);
}

.site-search__meta {
  padding: 0.25rem 1.25rem 0.85rem;
  font-size: 0.94rem;
}

.site-search__results {
  overflow: auto;
  padding: 0 1rem 1rem;
}

.site-search__list {
  display: grid;
  gap: 0.75rem;
}

.site-search__result {
  display: block;
  padding: 1rem 1.05rem;
  border-radius: 1.2rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--card-bg-strong) 92%, transparent);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.site-search__result:hover,
.site-search__result:focus-visible {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--card-bg-strong) 98%, transparent);
}

.site-search__eyebrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.45rem;
  color: var(--hero-muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-search__result-title {
  margin: 0;
  color: var(--hero-text);
  font-size: 1.12rem;
  line-height: 1.35;
}

.site-search__result-snippet {
  margin: 0.45rem 0 0;
  color: var(--hero-muted);
  font-size: 0.96rem;
}

.site-search__result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.site-search__result-tags span {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  background: rgba(212, 154, 58, 0.12);
  color: var(--hero-text);
  font-size: 0.8rem;
}

.site-search mark {
  padding: 0 0.12em;
  border-radius: 0.2em;
  background: rgba(212, 154, 58, 0.24);
  color: inherit;
}

html[data-theme="light"] .site-search__panel {
  background: rgba(255, 255, 255, 0.94);
}

html[data-theme="light"] .site-search__result {
  background: rgba(255, 255, 255, 0.9);
}

html[data-theme="light"] .site-search__result-tags span {
  color: var(--content-text);
}

.inline-icon {
  display: inline-flex;
  margin-right: 0.55rem;
  vertical-align: text-bottom;
}

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

@keyframes flowLine {
  from {
    background-position: 0 0;
  }

  to {
    background-position: -180% 0;
  }
}

@media (max-width: 1100px) {
  .hero-home__inner,
  .home-panels,
  .home-closing__grid,
  .content-grid,
  .page-hero__grid {
    grid-template-columns: 1fr;
  }

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

  .profile-card {
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
  }
}

@media (max-width: 960px) {
  .site-header__inner {
    min-height: 4.8rem;
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 1.25rem;
    right: 1.25rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border-radius: 1.25rem;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 90%, transparent);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .site-nav__link {
    width: 100%;
    padding: 0.65rem 0;
  }

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

  .workflow-stage::after {
    display: none;
  }

  .compact-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-shell {
    width: min(calc(100% - 1.5rem), var(--max-width));
  }

  .hero-diagram,
  .panel,
  .content-card,
  .article-shell,
  .contact-card,
  .info-card {
    padding: 1.25rem;
  }

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

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

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

  .topics-row {
    gap: 0.75rem;
  }

  .topic-chip {
    width: 100%;
    justify-content: flex-start;
  }

  .model-wheel {
    width: 100%;
    aspect-ratio: auto;
    display: grid;
    gap: 0.9rem;
  }

  .model-wheel__center,
  .model-wheel__ring,
  .model-node {
    position: static;
    transform: none;
    width: auto;
    margin: 0;
  }

  .model-wheel__center {
    width: 100%;
    height: auto;
    min-height: 6rem;
    border-radius: 1.5rem;
  }

  .model-wheel__ring {
    display: none;
  }

  .model-node {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.9rem;
    padding: 0.95rem;
    border: 1px solid var(--content-line);
    border-radius: 1rem;
    background: #fff;
  }

  .model-node__badge {
    margin: 0;
  }

  .model-node h3 {
    text-align: left;
  }

  .site-footer__inner {
    justify-content: center;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.laio-deep-model {
display: grid;
gap: 1rem;
}

.laio-deep-card {
position: relative;
overflow: hidden;
border: 1px solid var(–border-color, #dde3eb);
border-radius: 1.25rem;
background: var(–surface, #fff);
padding: clamp(1.4rem, 3vw, 2.2rem);
box-shadow: 0 18px 52px rgba(3, 13, 25, 0.07);
}

.laio-deep-card::before {
content: “”;
position: absolute;
inset: 0 auto 0 0;
width: 0.35rem;
background: linear-gradient(to bottom, #c9903f, #0b5cab);
}

.laio-deep-card__number {
display: inline-flex;
margin-bottom: 0.8rem;
color: var(–accent, #9c6a25);
font-size: 0.78rem;
font-weight: 900;
letter-spacing: 0.14em;
}

.laio-deep-card h3 {
margin-top: 0;
font-size: clamp(1.45rem, 2.2vw, 2rem);
}

.laio-deep-card p {
max-width: 92ch;
color: var(–text-muted, #5d6675);
font-size: 1.02rem;
line-height: 1.75;
}

.laio-deep-card__grid {
display: grid;
grid-template-columns: repeat(2, minmax(0, 1fr));
gap: 1rem;
margin-top: 1.25rem;
}

.laio-deep-card__grid > div {
border: 1px solid var(–border-color, #dde3eb);
border-radius: 0.9rem;
background: color-mix(in srgb, var(–surface-muted, #f4f6f9) 78%, transparent);
padding: 1rem;
}

.laio-deep-card__grid strong {
display: block;
margin-bottom: 0.55rem;
color: var(–text, #111827);
}

.laio-deep-card__grid ul,
.laio-practice-grid ul {
margin: 0;
padding-left: 1.1rem;
color: var(–text-muted, #5d6675);
line-height: 1.65;
}

.laio-system-board {
position: relative;
display: grid;
grid-template-columns: repeat(6, minmax(150px, 1fr));
gap: 0.85rem;
overflow-x: auto;
padding: 1rem;
border: 1px solid var(–border-color, #dde3eb);
border-radius: 1.35rem;
background:
linear-gradient(90deg, rgba(11, 92, 171, 0.08), rgba(201, 144, 63, 0.08)),
var(–surface, #fff);
}

.laio-system-board__lane {
position: relative;
min-height: 15rem;
border: 1px solid color-mix(in srgb, var(–border-color, #dde3eb) 80%, transparent);
border-radius: 1rem;
background: var(–surface, #fff);
padding: 1rem;
}

.laio-system-board__lane:not(:last-child)::after {
content: “→”;
position: absolute;
top: 50%;
right: -0.75rem;
transform: translateY(-50%);
z-index: 2;
color: var(–accent, #c9903f);
font-size: 1.4rem;
font-weight: 900;
}

.laio-system-board__lane h3 {
margin-top: 0;
color: var(–text, #111827);
font-size: 1rem;
}

.laio-system-board__lane p {
color: var(–text-muted, #5d6675);
font-size: 0.94rem;
line-height: 1.6;
}

.laio-practice-grid {
display: grid;
grid-template-columns: repeat(3, minmax(0, 1fr));
gap: 1rem;
margin-top: 1.25rem;
}

.laio-practice-grid article {
border: 1px solid var(–border-color, #dde3eb);
border-radius: 1rem;
background: var(–surface, #fff);
padding: 1.2rem;
box-shadow: 0 16px 40px rgba(3, 13, 25, 0.06);
}

html[data-theme=“dark”] .laio-deep-card,
html[data-theme=“dark”] .laio-deep-card__grid > div,
html[data-theme=“dark”] .laio-system-board,
html[data-theme=“dark”] .laio-system-board__lane,
html[data-theme=“dark”] .laio-practice-grid article {
background: #0b1c31;
border-color: rgba(255,255,255,0.12);
}

@media (max-width: 980px) {
.laio-practice-grid,
.laio-deep-card__grid {
grid-template-columns: 1fr;
}
}

@media (max-width: 640px) {
.laio-system-board {
grid-template-columns: 1fr;
overflow-x: visible;
}

.laio-system-board__lane:not(:last-child)::after {
top: auto;
right: 50%;
bottom: -1.2rem;
transform: translateX(50%) rotate(90deg);
}
}

.laio-system-board__lane {
transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.laio-system-board__lane:hover,
.laio-system-board__lane:focus,
.laio-system-board__lane.is-active {
transform: translateY(-4px);
border-color: color-mix(in srgb, var(–accent, #c9903f) 70%, var(–border-color, #dde3eb));
box-shadow: 0 18px 50px rgba(3, 13, 25, 0.14);
}