:root {
  --kd-bg: #ffffff; --kd-surface: #f5f5f5; --kd-text: #000000; --kd-muted: #555555;
  --kd-accent: #0047ff; --kd-on-accent: #ffffff; --kd-accent-2: #000000; --kd-accent-ink: #0047ff;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--kd-bg);
  color: var(--kd-text);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
h1, h2, h3 { font-family: "Inter Tight", "Inter", sans-serif; margin: 0; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--kd-accent); outline-offset: 3px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip {
  position: absolute; left: 1rem; top: -4rem; z-index: 20;
  background: var(--kd-accent); color: var(--kd-on-accent); padding: .6rem 1rem;
}
.skip:focus { top: 1rem; }

/* Grid */
.wrap { width: 100%; max-width: 1360px; margin: 0 auto; padding: 0 1.25rem; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: 1rem; }
.grid > * { grid-column: 1 / -1; }
@media (min-width: 900px) {
  .wrap { padding: 0 2.5rem; }
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 1.5rem; }
}

.rule { height: 1px; background: var(--kd-text); transform-origin: left; }
.rule-accent { height: 6px; background: var(--kd-accent); }

/* Type */
.h-section {
  font-size: clamp(2rem, 7.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
}
.h-display {
  font-size: clamp(2.75rem, 12.5vw, 7.5rem);
  font-weight: 800;
  line-height: .92;
  letter-spacing: -0.05em;
}
.lead { font-size: 1.25rem; line-height: 1.45; color: var(--kd-text); }

/* Header */
.site-header { border-bottom: 1px solid var(--kd-text); background: var(--kd-bg); }
.header-row {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: .5rem 1.5rem; padding-top: 1rem; padding-bottom: 1rem;
}
.wordmark {
  font-family: "Inter Tight", sans-serif;
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.nav { display: flex; gap: 1.25rem; }
.nav a { position: relative; font-size: .95rem; font-weight: 500; text-decoration: none; padding-bottom: 2px; }
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
}
.nav a:hover, .nav a:focus-visible { color: var(--kd-accent-ink); }
.nav a:hover::after, .nav a:focus-visible::after { transform: scaleX(1); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 1.5rem;
  font-family: "Inter Tight", sans-serif;
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  border: 2px solid transparent;
}
.btn-accent { background: var(--kd-accent); color: var(--kd-on-accent); border-color: var(--kd-accent); }
.btn-accent:hover, .btn-accent:focus-visible { background: var(--kd-text); border-color: var(--kd-text); }
.btn-invert { background: var(--kd-on-accent); color: var(--kd-accent-ink); border-color: var(--kd-on-accent); }
.btn-invert:hover, .btn-invert:focus-visible { background: transparent; color: var(--kd-on-accent); }
.btn-invert:focus-visible { outline-color: var(--kd-on-accent); }
.btn-line {
  font-weight: 600; text-decoration: none;
  border-bottom: 2px solid var(--kd-text); padding-bottom: 2px;
}
.btn-line:hover, .btn-line:focus-visible { color: var(--kd-accent-ink); border-color: var(--kd-accent); }

/* Hero */
.hero { position: relative; padding: 2.5rem 0 3.5rem; }
.hero-bar {
  height: 14px; background: var(--kd-accent);
  margin: -2.5rem 0 2.5rem; transform-origin: left;
}
.hero-grid { row-gap: 1.75rem; align-items: start; }
.hero-title { font-weight: 800; }
.hero-big {
  display: block;
  font-size: clamp(3.1rem, 14.5vw, 9rem);
  line-height: .88;
  letter-spacing: -0.055em;
}
.hero-small {
  display: block;
  margin-top: .9rem;
  font-size: clamp(1.6rem, 6.4vw, 3.25rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.hero-sub { max-width: 36rem; font-size: 1.125rem; color: var(--kd-muted); margin: 0; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.75rem; }
.hero-photo { overflow: hidden; aspect-ratio: 4 / 3; background: var(--kd-surface); }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 52% 40%; }

@media (min-width: 900px) {
  .hero { padding: 3rem 0 6rem; }
  .hero-bar { height: 18px; margin: -3rem 0 3.5rem; }
  .hero-grid { row-gap: 2.25rem; }
  .hero-title { grid-column: 1 / 9; grid-row: 1; }
  .hero-sub { grid-column: 1 / 7; grid-row: 2; }
  .hero-actions { grid-column: 1 / 8; grid-row: 3; }
  .hero-photo { grid-column: 9 / 13; grid-row: 1 / 4; aspect-ratio: 3 / 4; height: 100%; min-height: 32rem; }
  .hero-photo img { object-position: 46% 50%; }
}

/* Figures */
.figures { padding: 0 0 4rem; }
.figure-list { row-gap: 2.5rem; padding-top: 2rem; }
.figure-list li { display: flex; flex-direction: column; gap: .75rem; }
.figure {
  font-family: "Inter Tight", sans-serif;
  font-weight: 800;
  font-size: clamp(4.5rem, 22vw, 9rem);
  line-height: .85;
  letter-spacing: -0.06em;
}
.figure-list li:first-child .figure { color: var(--kd-accent-ink); }
.figure-label { max-width: 20rem; color: var(--kd-muted); }
@media (min-width: 900px) {
  .figures { padding-bottom: 7rem; }
  .figure-list li { grid-column: span 4; padding-right: 1.5rem; }
  .figure-list li + li { border-left: 1px solid var(--kd-text); padding-left: 1.5rem; }
}

/* About */
.about { background: var(--kd-surface); padding: 4.5rem 0; }
.about .grid { row-gap: 2.5rem; align-items: start; }
.about-photo { max-width: 22rem; }
.about-text .h-section { margin-bottom: 2rem; max-width: 14ch; }
.about-text p { max-width: 38rem; }
@media (min-width: 900px) {
  .about { padding: 8rem 0; }
  .about-media { grid-column: 1 / 5; }
  .about-photo { max-width: none; }
  .about-text { grid-column: 6 / 13; }
}

/* Who */
.who { padding: 4.5rem 0; }
.who .grid { row-gap: 2rem; padding-top: 2rem; }
.who-title { max-width: 10ch; }
.who-item { padding: 1.5rem 0; border-top: 1px solid var(--kd-text); }
.who-item:first-child { border-top: 0; padding-top: 0; }
.who-item h3 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.03em; margin-bottom: .5rem; }
.who-item p { margin: 0; color: var(--kd-muted); max-width: 36rem; }
@media (min-width: 900px) {
  .who { padding: 7rem 0; }
  .who-title { grid-column: 1 / 6; }
  .who-list { grid-column: 7 / 13; }
}

/* Photo grid */
.photos { padding: 0 0 4.5rem; }
.photo-grid { row-gap: 1rem; }
.pg { overflow: hidden; background: var(--kd-surface); }
.pg img { width: 100%; height: 100%; object-fit: cover; }
.pg-a { aspect-ratio: 4 / 3; }
.pg-b { grid-column: 1 / 3; aspect-ratio: 1; }
.pg-c { grid-column: 3 / 5; aspect-ratio: 1; }
@media (min-width: 900px) {
  .photos { padding-bottom: 7rem; }
  .photo-grid { row-gap: 1.5rem; }
  .pg-a { grid-column: 1 / 7; grid-row: 1 / 3; aspect-ratio: auto; min-height: 34rem; }
  .pg-b { grid-column: 8 / 13; grid-row: 1; aspect-ratio: 16 / 10; }
  .pg-c { grid-column: 8 / 11; grid-row: 2; aspect-ratio: 1; }
}

/* Why */
.why { padding: 0 0 4.5rem; }
.why .grid { row-gap: 2rem; }
.why-head .h-section { margin-bottom: 1.25rem; max-width: 9ch; }
.why-head .lead { max-width: 22rem; color: var(--kd-muted); font-size: 1.125rem; }
.why-list { display: grid; grid-template-columns: 1fr; border-top: 1px solid var(--kd-text); }
.why-list li { padding: 1.5rem 0; border-bottom: 1px solid color-mix(in srgb, var(--kd-text) 25%, transparent); }
.why-list h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.025em; margin-bottom: .4rem; }
.why-list p { margin: 0; color: var(--kd-muted); }
@media (min-width: 640px) {
  .why-list { grid-template-columns: 1fr 1fr; column-gap: 1.5rem; }
}
@media (min-width: 900px) {
  .why { padding-bottom: 8rem; }
  .why-head { grid-column: 1 / 5; }
  .why-list { grid-column: 6 / 13; }
}

/* Sessions */
.sessions { padding: 0 0 4.5rem; }
.sessions-head { row-gap: 1.25rem; padding: 2.5rem 0 3rem; align-items: end; }
.sessions-head .lead { max-width: 30rem; margin: 0; color: var(--kd-muted); }
.session-list { border-top: 1px solid var(--kd-text); }
.session { padding: 2rem 0; border-bottom: 1px solid var(--kd-text); row-gap: .75rem; }
.price {
  margin: 0;
  font-family: "Inter Tight", sans-serif;
  font-weight: 800;
  font-size: clamp(3.5rem, 16vw, 6.5rem);
  line-height: .85;
  letter-spacing: -0.05em;
}
.session h3 { font-size: clamp(1.5rem, 5vw, 2.25rem); font-weight: 700; letter-spacing: -0.035em; line-height: 1.05; }
.duration { color: var(--kd-accent-ink); font-weight: 600; margin: .4rem 0 1rem; }
.session-body > p:last-of-type { margin-bottom: .75rem; }
.session-body p { max-width: 36rem; }
.ticks { display: grid; gap: .35rem; max-width: 36rem; }
.ticks li { padding-left: 1.25rem; position: relative; color: var(--kd-muted); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .75em;
  width: .6rem; height: 2px; background: var(--kd-accent);
}
.note-row { padding-top: 2rem; }
.note { border-left: 6px solid var(--kd-text); padding-left: 1.25rem; }
.note h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.025em; margin-bottom: .3rem; }
.note p { margin: 0; color: var(--kd-muted); }
@media (min-width: 900px) {
  .sessions { padding-bottom: 8rem; }
  .sessions-head { padding: 3.5rem 0 4rem; }
  .sessions-head .h-display { grid-column: 1 / 8; }
  .sessions-head .lead { grid-column: 8 / 13; }
  .session { padding: 2.75rem 0; }
  .price { grid-column: 1 / 5; }
  .session-body { grid-column: 6 / 13; }
  .note { grid-column: 6 / 12; }
}
@media (prefers-reduced-motion: no-preference) and (hover: hover) {
  .price { transition: color .25s ease; }
  .session:hover .price { color: var(--kd-accent-ink); }
}

/* Book */
.book { background: var(--kd-accent); color: var(--kd-on-accent); padding: 0 0 4.5rem; }
.book-bar { height: 14px; background: var(--kd-text); transform-origin: left; margin-bottom: 3.5rem; }
.book .grid { row-gap: 2rem; align-items: end; }
.book-title { max-width: 9ch; }
.book-text p { font-size: 1.1875rem; max-width: 30rem; margin-bottom: 1.75rem; }
@media (min-width: 900px) {
  .book { padding-bottom: 7rem; }
  .book-bar { margin-bottom: 6rem; }
  .book-title { grid-column: 1 / 8; }
  .book-text { grid-column: 8 / 13; }
}

/* Footer */
.site-footer { padding: 3rem 0 4rem; border-top: 1px solid var(--kd-text); }
.site-footer .grid { row-gap: 2rem; }
address { font-style: normal; }
.foot-name { font-family: "Inter Tight", sans-serif; font-weight: 700; font-size: 1.25rem; letter-spacing: -0.02em; }
.foot-meta { color: var(--kd-muted); margin-top: .5rem; }
.foot-h { font-size: 1rem; font-weight: 700; margin-bottom: .5rem; }
.disclaimer p { font-size: .9375rem; color: var(--kd-muted); max-width: 44rem; margin: 0; }
@media (min-width: 900px) {
  .foot-id { grid-column: 1 / 5; }
  .disclaimer { grid-column: 6 / 13; }
}

/* Hover and focus transitions */
@media (prefers-reduced-motion: no-preference) {
  .nav a { transition: color .2s ease; }
  .nav a::after { transition: transform .25s ease; }
  .btn { transition: background-color .2s ease, color .2s ease, border-color .2s ease; }
  .btn-line { transition: color .2s ease, border-color .2s ease; }
}