/* =========================================================
   HUMAN · AI · MARKETING — Brand Guide Stylesheet
   Editorial · Two-Temperature · Built in Batavia
   ========================================================= */

:root {
  /* Primary */
  --ink: #0F1B2D;
  --bone: #F6F1E7;
  --bone-deep: #EFE8D8;

  /* Accent — the human/AI pair */
  --hearth: #E2733B;
  --hearth-deep: #C45F2A;
  --cyan: #3DBDC9;
  --cyan-deep: #2A98A3;

  /* Neutrals */
  --slate: #4A5663;
  --limestone: #C9C2B3;
  --paper: #FFFFFF;

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, Menlo, monospace;

  /* Rhythm */
  --max: 1320px;
  --gutter: clamp(1.5rem, 4vw, 4rem);
  --section-pad: clamp(5rem, 12vw, 9rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bone);
  overflow-x: hidden;
}

/* =========================================================
   Atmospheric grain
   ========================================================= */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.06 0 0 0 0 0.10 0 0 0 0 0.17 0 0 0 0.5 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 220px 220px;
}

/* =========================================================
   Scroll progress
   ========================================================= */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: transparent;
  z-index: 1000;
}
.progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--hearth);
  transition: width 0.1s linear;
}

/* =========================================================
   Masthead
   ========================================================= */
.masthead {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: 1.25rem var(--gutter);
  z-index: 100;
  background: rgba(246, 241, 231, 0.85);
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease);
}
.masthead.is-scrolled {
  border-bottom-color: rgba(15, 27, 45, 0.08);
}

.masthead__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.masthead__meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
}
.masthead__sep { opacity: 0.4; }

@media (max-width: 720px) {
  .masthead__meta { display: none; }
}

/* =========================================================
   Wordmark
   ========================================================= */
.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.18em;
  text-decoration: none;
  color: var(--ink);
  line-height: 1;
  white-space: nowrap;
}

.wordmark__h,
.wordmark__m {
  font-family: var(--font-display);
  font-weight: 400;
  font-feature-settings: "ss01" 1;
  letter-spacing: -0.025em;
}

.wordmark__ai {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--cyan-deep);
  font-size: 0.78em;
  letter-spacing: 0.02em;
  position: relative;
  top: -0.04em;
}

.wordmark__dot {
  color: var(--hearth);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.7em;
  position: relative;
  top: -0.12em;
}

.wordmark--mini { font-size: 1.05rem; }
.wordmark--xl   { font-size: clamp(2.2rem, 7vw, 5.5rem); }
.wordmark--lg   { font-size: clamp(1.8rem, 4.5vw, 3rem); }

/* =========================================================
   Side rail nav
   ========================================================= */
.rail {
  position: fixed;
  top: 50%;
  right: max(1rem, calc((100vw - var(--max)) / 2 - 1rem));
  transform: translateY(-50%);
  z-index: 50;
}
.rail ol {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.rail a {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.55;
  transition: opacity 0.3s var(--ease), color 0.3s var(--ease);
}
.rail a::before {
  content: attr(data-roman);
  width: 1.5rem;
  text-align: right;
  color: var(--limestone);
  transition: color 0.3s var(--ease);
}
.rail a::after {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.4;
  transition: width 0.3s var(--ease), opacity 0.3s var(--ease);
}
.rail a:hover,
.rail a.is-active {
  opacity: 1;
  color: var(--ink);
}
.rail a:hover::before,
.rail a.is-active::before {
  color: var(--hearth);
}
.rail a.is-active::after {
  width: 44px;
  opacity: 1;
}
.rail .rail__label {
  display: none;
}
.rail a:hover .rail__label {
  display: inline;
}

@media (max-width: 980px) {
  .rail { display: none; }
}

/* =========================================================
   Section scaffolding
   ========================================================= */
.section {
  position: relative;
  padding: var(--section-pad) var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(15, 27, 45, 0.12);
}
.section__head--dark { border-bottom-color: rgba(246, 241, 231, 0.18); }

.section__roman {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--hearth);
  line-height: 0.9;
  letter-spacing: -0.02em;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

/* Display headlines */
.display {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: clamp(2.2rem, 5.4vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 3rem 0;
  max-width: 22ch;
  color: var(--ink);
}
.display--sm {
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  line-height: 1.1;
  max-width: 28ch;
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  padding: clamp(7rem, 14vw, 10rem) var(--gutter) clamp(3rem, 6vw, 5rem);
  max-width: var(--max);
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  opacity: 0;
  animation: fadeUp 0.9s var(--ease-out) 0.2s forwards;
}
.eyebrow-line {
  display: block;
  width: 50px;
  height: 1px;
  background: var(--hearth);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3rem, 11vw, 9.5rem);
  line-height: 0.92;
  letter-spacing: -0.035em;
  margin: 0;
  color: var(--ink);
}
.hero__line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: lineReveal 1.1s var(--ease-out) forwards;
}
.hero__line:nth-of-type(1) { animation-delay: 0.4s; }
.hero__line:nth-of-type(2) {
  animation-delay: 0.7s;
  font-style: italic;
  font-weight: 250;
}

.ai-mark {
  display: inline-block;
  position: relative;
  margin-right: 0.1em;
  padding: 0 0.06em;
}
.ai-mark__inner {
  font-family: var(--font-mono);
  font-style: normal;
  font-weight: 500;
  font-size: 0.55em;
  letter-spacing: 0.02em;
  color: var(--cyan-deep);
  display: inline-block;
  position: relative;
  top: -0.18em;
  padding: 0 0.12em;
}
.ai-mark__inner::before,
.ai-mark__inner::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border: 1px solid var(--cyan);
}
.ai-mark__inner::before {
  top: -3px; left: -3px;
  border-right: none;
  border-bottom: none;
}
.ai-mark__inner::after {
  bottom: -3px; right: -3px;
  border-left: none;
  border-top: none;
}

.hero__lede {
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  line-height: 1.55;
  max-width: 48ch;
  color: var(--slate);
  margin: 0;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 1.1s forwards;
}

.hero__foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 2rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 1.4s forwards;
}

.hero__scroll {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.hero__scroll-line {
  display: block;
  width: 60px;
  height: 1px;
  background: currentColor;
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hearth);
  animation: scrollLine 2.4s infinite var(--ease);
}

.hero__stamp {
  border: 1px solid rgba(15, 27, 45, 0.15);
  padding: 0.85rem 1.1rem;
  display: grid;
  gap: 0.25rem;
  background: rgba(246, 241, 231, 0.5);
}
.stamp-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.stamp-key { color: var(--slate); opacity: 0.7; }
.stamp-val { color: var(--ink); }

.hero__margin {
  position: absolute;
  top: 50%;
  left: 0;
  transform: rotate(-90deg) translateX(50%);
  transform-origin: left top;
}
.margin-note {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
  opacity: 0.55;
}

@media (max-width: 720px) {
  .hero__margin { display: none; }
}

/* =========================================================
   I. Manifesto
   ========================================================= */
.section--manifesto .display {
  font-style: italic;
  max-width: 24ch;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 4rem 0;
  border: 1px solid rgba(15, 27, 45, 0.12);
}

.split__half {
  padding: clamp(2rem, 4vw, 3.5rem);
  position: relative;
}

.split__half--human {
  background: var(--bone);
}
.split__half--human::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: var(--hearth);
}

.split__half--ai {
  background: var(--ink);
  color: var(--bone);
}
.split__half--ai::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 4px;
  height: 100%;
  background: var(--cyan);
}
.split__half--ai p,
.split__half--ai li { color: rgba(246, 241, 231, 0.85); }

.split__header {
  margin-bottom: 1.5rem;
}

.split__chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border: 1px solid currentColor;
  margin-bottom: 1.25rem;
}
.split__chip--orange { color: var(--hearth-deep); }
.split__chip--cyan { color: var(--cyan); }

.split__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 0 0 1rem 0;
}

.split__list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0 0;
  display: grid;
  gap: 0.55rem;
}
.split__list li {
  padding-left: 1.25rem;
  position: relative;
  font-size: 0.95rem;
}
.split__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--hearth);
  font-family: var(--font-mono);
}
.split__half--ai .split__list li::before { color: var(--cyan); }

@media (max-width: 780px) {
  .split { grid-template-columns: 1fr; }
}

.callout {
  margin-top: 4rem;
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--hearth);
  color: var(--bone);
  display: grid;
  gap: 0.75rem;
  position: relative;
  overflow: hidden;
}
.callout::after {
  content: "";
  position: absolute;
  top: -50%; right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(246, 241, 231, 0.12) 0%, transparent 60%);
  pointer-events: none;
}
.callout__key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.85;
}
.callout__quote {
  font-family: var(--font-display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
}

/* =========================================================
   II. Mark
   ========================================================= */
.mark-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  border-top: 1px solid rgba(15, 27, 45, 0.08);
  border-bottom: 1px solid rgba(15, 27, 45, 0.08);
}

.mark-grid__display {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 4vw, 3rem) 0;
  position: relative;
}
.mark-grid__display::before,
.mark-grid__display::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--limestone);
}
.mark-grid__display::before {
  top: 0; left: 0;
  border-right: none;
  border-bottom: none;
}
.mark-grid__display::after {
  bottom: 0; right: 0;
  border-left: none;
  border-top: none;
}

.mark-grid__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hearth-deep);
  margin: 0 0 0.85rem 0;
}
.mark-grid__title--top { margin-top: 1.75rem; }

.spec-list {
  margin: 0;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 0.5rem 1.25rem;
  font-size: 0.9rem;
}
.spec-list dt {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink);
}
.spec-list dd {
  margin: 0;
  color: var(--slate);
}

.mark-grid__caption {
  margin: 0;
  font-size: 0.9rem;
  color: var(--slate);
  line-height: 1.5;
}
.mark-grid__caption em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--ink);
}
.muted { color: var(--limestone); text-decoration: line-through; }

@media (max-width: 780px) {
  .mark-grid { grid-template-columns: 1fr; }
}

.lockups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}
.lockup {
  margin: 0;
  display: flex;
  flex-direction: column;
}
.lockup__face {
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 2rem;
  border: 1px solid rgba(15, 27, 45, 0.12);
}
.lockup--light .lockup__face { background: var(--bone); }
.lockup--dark .lockup__face { background: var(--ink); color: var(--bone); border-color: var(--ink); }
.lockup--mono .lockup__face { background: var(--bone-deep); }

.lockup__mono {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.6rem);
  letter-spacing: -0.02em;
  line-height: 1;
}
.lockup__mono--cyan {
  font-family: var(--font-mono);
  color: var(--cyan-deep);
  font-size: 0.8em;
  margin: 0.1em 0;
}
.lockup__inline {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.8vw, 1.5rem);
  letter-spacing: -0.02em;
}
.lockup__icon {
  width: clamp(40px, 6vw, 60px);
  height: clamp(40px, 6vw, 60px);
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.lockup__hai {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  letter-spacing: -0.02em;
}
.cyan { color: var(--cyan-deep); }

.lockup figcaption {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
  margin-top: 0.85rem;
}

@media (max-width: 780px) {
  .lockups { grid-template-columns: 1fr; }
}

/* =========================================================
   III. Palette
   ========================================================= */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(160px, auto);
  gap: 0.75rem;
  margin: 3rem 0;
}

.swatch {
  background: var(--bg, var(--bone));
  color: var(--fg, var(--ink));
  border: 1px solid var(--border, transparent);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  cursor: pointer;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  min-height: 200px;
}
.swatch:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 40px -20px rgba(15, 27, 45, 0.25);
}

.swatch--lg { grid-column: span 6; min-height: 360px; }
.swatch--md { grid-column: span 6; min-height: 240px; }
.swatch--sm { grid-column: span 4; min-height: 200px; }

.swatch__role {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
}
.swatch__name {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0 0;
}
.swatch__hex {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  font-weight: 500;
  display: inline-block;
  cursor: pointer;
}
.swatch__rgb {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  opacity: 0.6;
  margin-top: 0.35rem;
}

@media (max-width: 980px) {
  .swatch--lg { grid-column: span 12; }
  .swatch--md { grid-column: span 6; }
  .swatch--sm { grid-column: span 6; }
}
@media (max-width: 600px) {
  .swatch--md, .swatch--sm { grid-column: span 12; }
}

.rules {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 2rem;
  border-top: 1px solid rgba(15, 27, 45, 0.12);
}
.rules__col {
  padding: 1.5rem 1.25rem 0;
  border-right: 1px solid rgba(15, 27, 45, 0.08);
}
.rules__col:last-child { border-right: none; }
.rules__col h4 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hearth-deep);
  margin: 0 0 0.65rem 0;
}
.rules__col p {
  font-size: 0.9rem;
  margin: 0;
  color: var(--slate);
  line-height: 1.45;
}

@media (max-width: 780px) {
  .rules { grid-template-columns: 1fr 1fr; }
  .rules__col:nth-child(2) { border-right: none; }
  .rules__col:nth-child(3),
  .rules__col:nth-child(4) { padding-top: 1.5rem; border-top: 1px solid rgba(15, 27, 45, 0.08); }
}

/* =========================================================
   IV. Type
   ========================================================= */
.type-grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.specimen {
  border-top: 1px solid rgba(15, 27, 45, 0.12);
  padding: 2.5rem 0;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}
.specimen:last-child {
  border-bottom: 1px solid rgba(15, 27, 45, 0.12);
}

.specimen__head {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.specimen__role {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hearth-deep);
}
.specimen__name {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 2.2rem;
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 0;
}
.specimen__name--sans { font-family: var(--font-sans); font-weight: 500; letter-spacing: -0.03em; }
.specimen__name--mono { font-family: var(--font-mono); font-weight: 500; font-size: 1.7rem; color: var(--cyan-deep); }
.specimen__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--slate);
  margin-top: 0.25rem;
}

.specimen__sample {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 1.5rem 0;
}
.specimen__sample--sans {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(1.4rem, 2.8vw, 2.2rem);
  line-height: 1.3;
  letter-spacing: -0.015em;
}
.specimen__sample--mono {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  letter-spacing: 0;
  color: var(--cyan-deep);
}

.specimen__scale {
  display: grid;
  gap: 0.75rem;
  border-top: 1px dashed rgba(15, 27, 45, 0.18);
  padding-top: 1.25rem;
  color: var(--ink);
  font-family: var(--font-display);
}
.specimen__scale--sans { font-family: var(--font-sans); }
.specimen__scale--mono { font-family: var(--font-mono); color: var(--slate); }
.scale-row { line-height: 1.1; }

.specimen__foot {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
}
.specimen__foot span::before {
  content: "→ ";
  color: var(--hearth);
}

@media (max-width: 780px) {
  .specimen { grid-template-columns: 1fr; }
}

/* =========================================================
   V. Voice
   ========================================================= */
.voice-attrs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
.voice-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hearth-deep);
  margin: 0 0 1rem 0;
}
.voice-col--neg h4 { color: var(--slate); }

.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag-list li {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-style: italic;
  font-weight: 300;
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
}
.tag-list--strike li {
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  color: var(--slate);
  border-color: var(--limestone);
  border-style: dashed;
}

.examples {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0 4rem;
}
.example {
  padding: 1.75rem;
  border: 1px solid rgba(15, 27, 45, 0.12);
  background: var(--bone);
  position: relative;
}
.example--good { border-color: var(--hearth); }
.example--good::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 6px;
  height: 100%;
  background: var(--hearth);
}
.example--bad { background: rgba(201, 194, 179, 0.25); }

.example header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.example__badge {
  padding: 0.2rem 0.5rem;
}
.example__badge--good { color: var(--bone); background: var(--hearth); }
.example__badge--bad { color: var(--slate); background: transparent; border: 1px dashed var(--slate); }
.example__ctx { color: var(--slate); opacity: 0.7; }

.example blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.4;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.example--bad blockquote { color: var(--slate); font-style: italic; }

@media (max-width: 780px) {
  .voice-attrs, .examples { grid-template-columns: 1fr; }
}

.lex {
  padding-top: 2rem;
  border-top: 1px solid rgba(15, 27, 45, 0.12);
}
.lex__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hearth-deep);
  margin: 0 0 1.25rem;
}
.lex__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.lex__col h4 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.4rem;
  margin: 0 0 0.75rem;
}
.lex__col--use h4 { color: var(--hearth-deep); }
.lex__col--avoid h4 { color: var(--slate); text-decoration: line-through; text-decoration-thickness: 1px; }

.lex__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink);
}
.lex__col--avoid ul { color: var(--slate); }

@media (max-width: 780px) {
  .lex__grid { grid-template-columns: 1fr; }
}

/* =========================================================
   VI. Message — DARK section
   ========================================================= */
.section--message {
  background: var(--ink);
  color: var(--bone);
  max-width: 100%;
  margin: 0;
  padding-left: 0;
  padding-right: 0;
  position: relative;
}
.section--message > * {
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.section--message .section__roman { color: var(--hearth); }
.section--message .section__label { color: var(--limestone); }

.tagline {
  text-align: left;
  padding: 2rem var(--gutter) 4rem;
}
.tagline__pre {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--limestone);
}
.tagline__main {
  font-family: var(--font-display);
  font-weight: 250;
  font-size: clamp(3.5rem, 12vw, 9rem);
  line-height: 0.92;
  letter-spacing: -0.035em;
  margin: 1rem 0 0;
  color: var(--bone);
}
.cyan-mono {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: 0.65em;
  font-weight: 500;
  letter-spacing: 0;
  position: relative;
  top: -0.1em;
  margin: 0 0.05em;
}

.tag-alts {
  border-top: 1px solid rgba(246, 241, 231, 0.15);
  border-bottom: 1px solid rgba(246, 241, 231, 0.15);
  padding: 2.5rem var(--gutter);
}
.tag-alts h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--limestone);
  margin: 0 0 1.25rem;
}
.tag-alts ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}
.tag-alts li {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  line-height: 1.3;
  color: rgba(246, 241, 231, 0.9);
  padding-left: 1.75rem;
  position: relative;
}
.tag-alts li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--hearth);
  font-style: normal;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding: 3rem var(--gutter) 2rem;
}
.pillar {
  padding: 1.5rem 0;
  border-top: 2px solid var(--hearth);
}
.pillar:nth-child(2) { border-top-color: var(--cyan); }
.pillar:nth-child(3) { border-top-color: var(--limestone); }

.pillar__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--limestone);
}
.pillar__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0.75rem;
}
.pillar p {
  font-size: 0.95rem;
  color: rgba(246, 241, 231, 0.75);
  line-height: 1.55;
  margin: 0;
}

@media (max-width: 780px) {
  .pillars { grid-template-columns: 1fr; }
}

.boiler {
  padding: 3rem var(--gutter) 4rem;
  border-top: 1px solid rgba(246, 241, 231, 0.15);
}
.boiler__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.boiler p {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  line-height: 1.45;
  letter-spacing: -0.015em;
  color: rgba(246, 241, 231, 0.92);
  max-width: 62ch;
  margin: 1rem 0 0;
}

/* =========================================================
   VII. Values
   ========================================================= */
.values-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.value {
  display: grid;
  grid-template-columns: 80px 280px 1fr;
  align-items: baseline;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: 1.75rem 0;
  border-top: 1px solid rgba(15, 27, 45, 0.12);
  transition: padding 0.4s var(--ease);
  position: relative;
}
.value:last-child { border-bottom: 1px solid rgba(15, 27, 45, 0.12); }

.value::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, rgba(226, 115, 59, 0.06) 0%, transparent 100%);
  transition: width 0.5s var(--ease);
  pointer-events: none;
}
.value:hover::before { width: 100%; }
.value:hover { padding-left: 1.5rem; }

.value__num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--hearth);
  letter-spacing: 0.04em;
}
.value__title {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
}
.value p {
  margin: 0;
  font-size: 1rem;
  color: var(--slate);
  line-height: 1.5;
  max-width: 56ch;
}

@media (max-width: 780px) {
  .value { grid-template-columns: 50px 1fr; }
  .value p { grid-column: 1 / -1; padding-left: 50px; }
}

/* =========================================================
   VIII. Application
   ========================================================= */
.apps {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}
.app {
  margin: 0;
  display: flex;
  flex-direction: column;
}
.app figcaption {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
  margin-top: 0.75rem;
}

.app--web { grid-row: span 2; }
.app--card { }
.app--email { }
.app--hub { }

@media (max-width: 980px) {
  .apps { grid-template-columns: 1fr; }
  .app--web { grid-row: auto; }
}

/* Website mock */
.app__chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bone-deep);
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(15, 27, 45, 0.12);
  border-bottom: none;
}
.app__dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--limestone);
}
.app__url {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--slate);
}

.app__screen {
  background: var(--bone);
  border: 1px solid rgba(15, 27, 45, 0.12);
  padding: 1.5rem;
  min-height: 320px;
  display: flex;
  flex-direction: column;
}

.screen-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(15, 27, 45, 0.08);
  font-size: 0.85rem;
}
.screen-logo {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.screen-logo .cyan {
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.screen-links {
  font-family: var(--font-sans);
  color: var(--slate);
  font-size: 0.78rem;
}

.screen-hero {
  padding: 2rem 0;
  flex: 1;
}
.screen-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hearth-deep);
  margin: 0 0 0.75rem;
}
.screen-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 0 0 1rem;
}
.screen-sub {
  color: var(--slate);
  max-width: 38ch;
  margin: 0 0 1.5rem;
}
.screen-cta {
  display: inline-block;
  background: var(--ink);
  color: var(--bone);
  padding: 0.7rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.3s var(--ease);
}
.screen-cta:hover { background: var(--hearth); }

/* Business card */
.app--card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  align-content: start;
}
.app--card figcaption { grid-column: 1 / -1; }
.card {
  aspect-ratio: 7 / 4;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid rgba(15, 27, 45, 0.12);
  font-size: 0.7rem;
}
.card--front { background: var(--bone); }
.card--back { background: var(--ink); color: var(--bone); border-color: var(--ink); align-items: center; justify-content: center; gap: 0.5rem; }

.card__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.card__logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.card__logo .cyan {
  font-family: var(--font-mono);
  font-size: 0.7em;
}
.card__role {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}
.card__name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1rem;
  margin: 0;
  letter-spacing: -0.015em;
}
.card__meta {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--slate);
  margin: 0.15rem 0 0;
}
.card__back-mark {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.card__back-mark .cyan { font-family: var(--font-mono); font-size: 0.7em; }
.card__back-tag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--limestone);
}

/* Email */
.email {
  background: var(--bone);
  border: 1px solid rgba(15, 27, 45, 0.12);
  padding: 1.25rem;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.email__head {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--slate);
}
.email__from { color: var(--ink); }
.email__subj {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.15rem;
  letter-spacing: -0.015em;
  margin: 0;
}
.email__body {
  color: var(--slate);
  line-height: 1.55;
  font-size: 0.85rem;
}
.email__body p { margin: 0.25rem 0; }
.email__sig {
  padding-top: 0.75rem;
  border-top: 1px solid rgba(15, 27, 45, 0.08);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}
.sig-mark { font-family: var(--font-display); font-size: 0.9rem; letter-spacing: -0.02em; }
.sig-mark .cyan { font-family: var(--font-mono); font-size: 0.7em; }
.sig-meta { color: var(--slate); text-transform: uppercase; }

/* Hub */
.hub {
  background: var(--ink);
  color: var(--bone);
  padding: 1.5rem;
  border: 1px solid var(--ink);
}
.hub__top {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--limestone);
  margin-bottom: 1.5rem;
}
.hub__powered .cyan { color: var(--cyan); }
.hub__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 0 0 0.4rem;
}
.hub__sub {
  font-size: 0.85rem;
  color: rgba(246, 241, 231, 0.7);
  margin: 0 0 1.5rem;
}
.hub__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.hub__badge {
  display: inline-block;
  margin-right: 0.5rem;
  color: var(--hearth);
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
  background: var(--ink);
  color: var(--bone);
  padding: clamp(4rem, 8vw, 6rem) var(--gutter) 2rem;
  margin-top: 4rem;
}
.footer__grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
}
.footer__col--mark .wordmark__h,
.footer__col--mark .wordmark__m { color: var(--bone); }
.footer__col--mark .wordmark__ai { color: var(--cyan); }

.footer__tag {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  margin: 1.25rem 0 0;
  color: rgba(246, 241, 231, 0.8);
}

.footer__col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 1rem;
}
.footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: rgba(246, 241, 231, 0.78);
}
.footer__governance {
  font-size: 0.85rem;
  line-height: 1.55;
  color: rgba(246, 241, 231, 0.7);
  margin: 0;
}
.footer__governance .mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--cyan);
}

.footer__rule {
  max-width: var(--max);
  margin: 3rem auto 1.5rem;
  height: 1px;
  background: rgba(246, 241, 231, 0.15);
}

.footer__base {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--limestone);
}
.footer__centerline {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: -0.015em;
  text-transform: none;
}
.footer__centerline .cyan { font-family: var(--font-mono); font-size: 0.75em; }

@media (max-width: 780px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__col--mark { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* =========================================================
   Pulse indicator
   ========================================================= */
.pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  margin-right: 0.4rem;
  position: relative;
  top: -0.05em;
  box-shadow: 0 0 0 0 var(--cyan);
  animation: pulse 2.4s infinite var(--ease);
}

/* =========================================================
   Toast
   ========================================================= */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: var(--bone);
  padding: 0.7rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  z-index: 200;
}
.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* =========================================================
   Scroll reveal helpers
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   Animations
   ========================================================= */
@keyframes lineReveal {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scrollLine {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(61, 189, 201, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(61, 189, 201, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 189, 201, 0); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* Selection */
::selection {
  background: var(--hearth);
  color: var(--bone);
}