/* Self-hosted variable fonts (latin subsets) — no external font origins */
@font-face {
  font-family: 'Fraunces';
  src: url('/fonts/fraunces-var-latin.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-var-latin.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --canvas: #0A0A0D;
  --surface-alt: #14141B;
  --surface-raised: #1B1B24;
  --navy: #24356E;
  --gold: #D9A63D;
  --gold-hover: #D9A63D;
  --ivory: #F2EFE9;
  --muted: #A9A9B4;
  --hairline: rgba(242, 239, 233, 0.10);
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter', Arial, sans-serif;
  --container: 1200px;
  --radius: 4px;
  --header-height: 82px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background: var(--canvas);
  color: var(--ivory);
  font-family: var(--sans);
  font-size: 1.125rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

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

p {
  margin: 0 0 1.35rem;
  max-width: 68ch;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.08;
  text-wrap: balance;
}

h1 {
  margin-bottom: 1.5rem;
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.75rem);
  letter-spacing: -0.03em;
}

h3 {
  margin-bottom: .75rem;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

button,
input,
select,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1000;
  padding: .7rem 1rem;
  background: var(--gold);
  color: var(--canvas);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(80px, 9vw, 128px);
  background: var(--canvas);
  overflow: clip;
}

.section.alt {
  background: var(--surface-alt);
}

.section-kicker,
.eyebrow,
.micro-label {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin: 0 0 1.15rem;
  color: var(--gold);
  font-size: .75rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.section-kicker::before,
.eyebrow::before {
  width: 28px;
  height: 1px;
  background: var(--gold);
  content: '';
}

.section-heading {
  max-width: 780px;
}

.section-intro {
  max-width: 680px;
  color: var(--muted);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  border-bottom: 1px solid var(--hairline);
  background: rgba(10, 10, 13, .96);
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(195px, 1fr) auto auto;
  align-items: center;
  min-height: var(--header-height);
  gap: 1.4rem;
}

.wordmark {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  font-weight: 500;
  white-space: nowrap;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 1.8rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  position: relative;
  padding-block: .55rem;
  color: var(--muted);
  font-size: .86rem;
  font-weight: 600;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--gold);
  content: '';
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}

.site-nav a:hover,
.site-nav a[aria-current='page'] {
  color: var(--ivory);
}

.site-nav a:hover::after,
.site-nav a[aria-current='page']::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-cta {
  padding: .7rem 1rem;
  background: var(--gold);
  color: var(--canvas);
  font-size: .8rem;
  font-weight: 700;
  white-space: nowrap;
  transition: background .2s ease, transform .2s ease;
}

.header-cta:hover {
  background: var(--gold-hover);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 12px;
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--ivory);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  margin: 5px 0;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}

.nav-toggle[aria-expanded='true'] span:first-child {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] span:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  min-height: calc(100svh - var(--header-height));
  padding-block: clamp(72px, 8vw, 110px) 44px;
  background: var(--canvas);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(380px, .98fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-copy .lead {
  max-width: 590px;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
}

.hero-visual {
  position: relative;
  align-self: stretch;
  min-height: 620px;
}

.hero-visual::after {
  position: absolute;
  right: 0;
  bottom: -22px;
  left: 0;
  height: 1px;
  background: var(--gold);
  content: '';
  opacity: .55;
}

.hero-portrait {
  width: 100%;
  height: 100%;
  min-height: 620px;
  object-fit: contain;
  object-position: center top;
}

.hero-landscape {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
  object-position: center;
}

.hero-stage {
  position: relative;
  min-height: calc(100svh - var(--header-height));
  display: grid;
  align-items: end;
  padding-block: 100px 64px;
}

.hero-stage .hero-stage-media,
.hero-stage .hero-stage-media img,
.hero-stage::after {
  position: absolute;
  inset: 0;
}

.hero-stage .hero-stage-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-stage::after {
  background: linear-gradient(90deg, rgba(10, 10, 13, .95), rgba(10, 10, 13, .30));
  content: '';
}

.hero-stage .hero-copy {
  z-index: 1;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: .8rem 1.2rem;
  border: 1px solid var(--gold);
  background: var(--gold);
  color: var(--canvas);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.button:hover {
  background: var(--gold-hover);
  box-shadow: 0 12px 30px rgba(217, 166, 61, .16);
  transform: translateY(-3px);
}

.button.secondary {
  background: transparent;
  color: var(--ivory);
}

.button.secondary:hover {
  background: var(--ivory);
  border-color: var(--ivory);
  color: var(--canvas);
}

.credibility-line,
.credential-row {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.2rem;
  margin: 2rem 0 0;
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
}

.credibility-line span,
.credential-row span {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.credibility-line span::before,
.credential-row span::before {
  width: 4px;
  height: 4px;
  background: var(--gold);
  content: '';
  transform: rotate(45deg);
}

.scroll-indicator {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  margin-top: 3rem;
  color: var(--muted);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.scroll-indicator::before {
  width: 1px;
  height: 38px;
  background: var(--gold);
  content: '';
}

.grid-3,
.grid-4,
.split,
.media-grid,
.form-grid {
  display: grid;
  gap: clamp(1.2rem, 2.5vw, 2rem);
}

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
}

.split > *,
.problem-layout > *,
.book-showcase > *,
.learn-layout > * {
  min-width: 0;
}

.split.reverse > :first-child {
  order: 2;
}

.card {
  position: relative;
  min-height: 100%;
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--hairline);
  background: var(--surface-raised);
  transition: border-color .2s ease, transform .2s ease;
}

.card:hover {
  border-color: rgba(217, 166, 61, .52);
  transform: translateY(-5px);
}

.card-number {
  display: block;
  margin-bottom: 2rem;
  color: var(--gold);
  font-family: var(--serif);
  font-size: 2.35rem;
  line-height: 1;
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
}

.visual-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--surface-raised);
}

.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.visual-frame.portrait {
  min-height: 590px;
}

.visual-frame.portrait img {
  object-fit: contain;
  object-position: center top;
}

.visual-frame.landscape {
  min-height: 420px;
}

.visual-frame.landscape img {
  position: absolute;
  inset: 0;
}

.visual-frame::after {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--gold);
  content: '';
  transform: rotate(45deg);
}

.image-caption {
  margin-top: .7rem;
  color: var(--muted);
  font-size: .76rem;
}

.king-mark {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 48px;
  margin-bottom: 1.4rem;
  color: var(--gold);
}

.king-mark::before {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 18px;
  height: 28px;
  border: 2px solid currentColor;
  border-radius: 50% 50% 18% 18%;
  content: '';
}

.king-mark::after {
  position: absolute;
  bottom: 2px;
  left: 2px;
  width: 30px;
  height: 5px;
  border-top: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  content: '';
}

.king-cross {
  position: absolute;
  top: 0;
  left: 15px;
  width: 4px;
  height: 13px;
  background: currentColor;
}

.king-cross::after {
  position: absolute;
  top: 4px;
  left: -4px;
  width: 12px;
  height: 4px;
  background: currentColor;
  content: '';
}

.problem-layout {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.problem-visual {
  margin-top: 2.2rem;
  aspect-ratio: 16 / 8.5;
}

.problem-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-showcase {
  display: grid;
  grid-template-columns: minmax(280px, .75fr) minmax(0, 1.25fr);
  align-items: center;
  gap: clamp(2.5rem, 8vw, 8rem);
}

.book-stage {
  position: relative;
  display: grid;
  min-height: 600px;
  place-items: center;
  perspective: 1400px;
  isolation: isolate;
}

.book-stage::before {
  position: absolute;
  bottom: 11%;
  left: 50%;
  z-index: -1;
  width: min(78%, 430px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(217, 166, 61, .72), transparent);
  content: '';
  transform: translateX(-50%);
}

.book-tilt {
  width: min(72%, 380px);
  transform-style: preserve-3d;
  transition: transform .18s ease-out;
  will-change: transform;
}

.book-object {
  position: relative;
  isolation: isolate;
  transform-style: preserve-3d;
}

.book-object::before {
  position: absolute;
  inset: 7px -11px -9px 9px;
  z-index: -1;
  border-radius: 0 3px 3px 0;
  background: repeating-linear-gradient(0deg, #c9c5bc 0 1px, #eeeae1 1px 4px);
  box-shadow: 18px 28px 45px rgba(0, 0, 0, .58), 5px 0 0 rgba(217, 166, 61, .22);
  content: '';
}

.book-object::after {
  position: absolute;
  right: -8%;
  bottom: -34px;
  left: 5%;
  z-index: -2;
  height: 30px;
  border-radius: 50%;
  background: rgba(0, 0, 0, .78);
  content: '';
  filter: blur(14px);
  transform: scaleY(.58);
}

.book-object img {
  position: relative;
  z-index: 1;
  width: 100%;
  border: 0;
  box-shadow: 0 0 0 1px rgba(217, 166, 61, .22), 0 14px 42px rgba(0, 0, 0, .28);
}

.rating {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: 1rem;
  color: var(--gold);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .05em;
}

.learn-list,
.check-list {
  display: grid;
  gap: .9rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

.learn-list li,
.check-list li {
  position: relative;
  padding-left: 1.7rem;
  color: var(--muted);
}

.learn-list li::before,
.check-list li::before {
  position: absolute;
  top: .7em;
  left: 0;
  width: 7px;
  height: 7px;
  border: 1px solid var(--gold);
  content: '';
  transform: rotate(45deg);
}

.learn-layout {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(360px, 1.05fr);
  align-items: stretch;
  gap: clamp(2.5rem, 7vw, 7rem);
}

.learn-copy {
  align-self: center;
}

.learn-tool-visual {
  min-height: 700px;
}

.learn-tool-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.learn-tool-visual::after {
  top: 16px;
  bottom: auto;
}

.tool-caption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  display: grid;
  gap: .35rem;
  padding: 3.8rem 1.5rem 1.5rem;
  background: linear-gradient(0deg, rgba(10, 10, 13, .96), rgba(10, 10, 13, 0));
}

.tool-caption span {
  color: var(--gold);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.tool-caption strong {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: 500;
}

.pullquote {
  position: relative;
  margin: 2.2rem 0;
  padding: 1.7rem 0 1.7rem 2rem;
  border-left: 2px solid var(--gold);
  color: var(--ivory);
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  line-height: 1.4;
}

.pullquote cite {
  display: block;
  margin-top: 1rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: .8rem;
  font-style: normal;
}

.review-proof {
  position: relative;
  min-height: 440px;
  display: grid;
  grid-template-columns: minmax(120px, .72fr) minmax(150px, 1fr);
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--hairline);
  background: var(--surface-raised);
}

.review-proof::before,
.review-proof::after {
  position: absolute;
  content: '';
}

.review-proof::before {
  top: 0;
  left: 0;
  width: 42%;
  height: 2px;
  background: var(--gold);
}

.review-proof::after {
  right: 18px;
  bottom: 18px;
  width: 13px;
  height: 13px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.review-proof-cover img {
  width: 100%;
  max-width: 180px;
  margin-inline: auto;
  box-shadow: 14px 22px 28px rgba(0, 0, 0, .42);
}

.review-proof-copy {
  display: grid;
  align-content: center;
  min-height: 250px;
  padding-left: clamp(1.2rem, 3vw, 2rem);
  border-left: 1px solid var(--hairline);
}

.proof-king {
  width: 32px;
  height: 44px;
  margin-bottom: 1.4rem;
  fill: none;
  stroke: var(--gold);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 2;
}

.proof-stars {
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: .16em;
}

.review-proof-copy strong {
  margin: .5rem 0 .15rem;
  color: var(--ivory);
  font-family: var(--serif);
  font-size: clamp(3.8rem, 7vw, 6rem);
  font-weight: 500;
  line-height: .9;
}

.review-proof-copy > span:last-child {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.band-image {
  position: relative;
  min-height: 560px;
  display: grid;
  align-items: end;
}

.band-image > img,
.band-image::after {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.band-image > img {
  object-fit: cover;
}

.band-image::after {
  background: linear-gradient(0deg, rgba(10, 10, 13, .92), rgba(10, 10, 13, .12));
  content: '';
}

.band-copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: clamp(2rem, 6vw, 5rem);
}

.credential-cards .card {
  border-top: 2px solid var(--gold);
}

.counter-number {
  display: block;
  margin-bottom: .65rem;
  color: var(--gold);
  font-family: var(--serif);
  font-size: clamp(3.5rem, 8vw, 7rem);
  line-height: .9;
}

.covers-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 300px));
  align-items: end;
  justify-content: center;
  gap: clamp(2rem, 8vw, 7rem);
}

.cover-card img {
  width: 100%;
  filter: drop-shadow(18px 22px 18px rgba(0, 0, 0, .32));
  transition: transform .25s ease;
}

.cover-card:hover img {
  transform: translateY(-7px) rotate(-1deg);
}

.topic-card {
  min-height: 290px;
}

.format-card {
  min-height: 250px;
}

.format-glyph {
  width: 62px;
  height: 62px;
  margin-bottom: 2.2rem;
  color: var(--gold);
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 2.25;
}

.topic-index {
  display: block;
  margin-bottom: 3.2rem;
  color: var(--gold);
  font-family: var(--serif);
  font-size: 2.6rem;
}

.media-grid {
  grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr);
  align-items: start;
}

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

.headshot-pair img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: contain;
  object-position: center top;
  background: var(--canvas);
}

.bio-block {
  padding: 1.4rem 0;
  border-top: 1px solid var(--hairline);
}

.bio-block:last-child {
  border-bottom: 1px solid var(--hairline);
}

.bio-block p {
  margin-bottom: 0;
  color: var(--muted);
}

.inquiry-form {
  max-width: 900px;
}

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

.form-field {
  display: grid;
  gap: .45rem;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  color: var(--ivory);
  font-size: .82rem;
  font-weight: 700;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid rgba(242, 239, 233, .24);
  border-radius: 0;
  background: var(--canvas);
  color: var(--ivory);
  padding: .8rem .9rem;
}

.form-field input,
.form-field select {
  min-height: 54px;
}

.form-field textarea {
  min-height: 160px;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--gold);
  outline: 1px solid var(--gold);
}

.form-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: .8rem;
}

.form-success {
  display: none;
  margin-top: 1.4rem;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--gold);
  background: var(--surface-raised);
  color: var(--ivory);
}

.form-success.is-visible {
  display: block;
}

.contact-aside {
  display: grid;
  gap: 1.4rem;
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--hairline);
}

.contact-link span:last-child {
  color: var(--gold);
}

.final-cta {
  text-align: center;
}

.final-cta .section-heading,
.final-cta p {
  margin-inline: auto;
}

.final-cta .button-row {
  justify-content: center;
}

.legal-copy {
  max-width: 820px;
}

.legal-copy h2 {
  margin-top: 3.3rem;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

.legal-copy ul {
  color: var(--muted);
}

.site-footer {
  padding-block: 58px 30px;
  border-top: 1px solid var(--hairline);
  background: var(--canvas);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr .7fr .7fr;
  gap: 2rem;
}

.footer-wordmark {
  margin-bottom: .7rem;
  font-family: var(--serif);
  font-size: 1.55rem;
}

.footer-copy {
  color: var(--muted);
  font-size: .86rem;
}

.footer-links {
  display: grid;
  align-content: start;
  gap: .55rem;
}

.footer-links a {
  color: var(--muted);
  font-size: .85rem;
}

.footer-links a:hover {
  color: var(--gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: .72rem;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}

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

.stagger > .reveal:nth-child(2) {
  transition-delay: 120ms;
}

.stagger > .reveal:nth-child(3) {
  transition-delay: 240ms;
}

.stagger > .reveal:nth-child(4) {
  transition-delay: 360ms;
}

@media (max-width: 960px) {
  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    padding: 2rem 24px;
    background: var(--canvas);
  }

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

  .site-nav ul {
    align-items: stretch;
    flex-direction: column;
    gap: 0;
  }

  .site-nav a {
    display: block;
    padding: 1rem 0;
    border-bottom: 1px solid var(--hairline);
    font-family: var(--serif);
    font-size: 1.6rem;
  }

  .header-cta {
    display: none;
  }

  .hero-grid,
  .book-showcase,
  .problem-layout,
  .media-grid,
  .learn-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-bottom: 0;
  }

  .hero-visual {
    min-height: 560px;
  }

  .hero-portrait {
    min-height: 560px;
  }

  .hero-stage::after {
    background: linear-gradient(0deg, rgba(10, 10, 13, .96), rgba(10, 10, 13, .18));
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .book-stage {
    min-height: 520px;
  }

  .learn-tool-visual {
    min-height: 620px;
  }
}

@media (max-width: 700px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .section {
    padding-block: 80px;
  }

  .grid-3,
  .grid-4,
  .split,
  .form-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .split.reverse > :first-child {
    order: initial;
  }

  .hero {
    min-height: auto;
    padding-top: 70px;
  }

  .hero-visual,
  .hero-portrait {
    min-height: 510px;
  }

  .hero-portrait {
    object-fit: contain;
    object-position: center top;
  }

  .hero-stage {
    min-height: 720px;
    padding-bottom: 48px;
  }

  .hero-stage .hero-stage-media img {
    object-position: 62% center;
  }

  .button-row,
  .button {
    width: 100%;
  }

  .visual-frame.portrait {
    min-height: 500px;
  }

  .visual-frame.landscape,
  .problem-visual {
    min-height: 280px;
  }

  .band-image {
    min-height: 600px;
  }

  .band-copy {
    padding: 2rem 1rem;
  }

  .book-stage {
    min-height: 440px;
  }

  .book-tilt {
    width: min(75%, 290px);
  }

  .learn-tool-visual {
    min-height: 560px;
  }

  .review-proof {
    min-height: 360px;
    grid-template-columns: minmax(95px, .68fr) minmax(130px, 1fr);
    gap: 1.25rem;
    padding: 1.25rem;
  }

  .review-proof-copy {
    min-height: 220px;
    padding-left: 1.15rem;
  }

  .proof-king {
    margin-bottom: 1rem;
  }

  .review-proof-copy strong {
    font-size: clamp(3.4rem, 17vw, 4.8rem);
  }

  .covers-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .headshot-pair {
    gap: .6rem;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

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

  .book-tilt,
  .book-object {
    transform: none !important;
  }
}