/* Design tokens read from a live render of lassie.ai, not invented.
   abcMarist is commercial, so Newsreader (OFL) stands in for it. */
:root {
  --paper: rgb(249, 248, 245);
  --ink: rgb(26, 22, 19);
  --muted: rgb(102, 102, 102);
  --white: rgb(255, 255, 255);
  --sand-40: rgba(227, 221, 207, 0.4);
  --sand-20: rgba(227, 221, 207, 0.2);
  --hair: rgba(26, 22, 19, 0.1);

  --r-sm: 12px;
  --r-md: 16px;
  --r-pill: 56px;

  --ease-ui: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-reveal: cubic-bezier(0.22, 1, 0.36, 1);

  --display: 'Newsreader', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
  --mono: 'DM Mono', ui-monospace, monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Paper tooth. The reference has film grain over its media; this is the flat equivalent. */
.grain {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ------------------------------------------------------------------ nav */
.nav {
  position: fixed;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 8px 9px 14px;
  border-radius: var(--r-pill);
  background: var(--white);
  border: 1px solid var(--sand-40);
  box-shadow: 0 1px 2px rgba(26, 22, 19, 0.04);
  font-size: 14px;
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}
.nav__brand img {
  height: 18px;
  width: auto;
  display: block;
}
.nav__sep {
  width: 1px;
  height: 16px;
  background: var(--hair);
}
.nav__meta {
  padding-right: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
}

/* ------------------------------------------------------------------ dots */
.dots {
  position: fixed;
  right: 26px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.dots a {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(26, 22, 19, 0.18);
  transition: background 0.3s var(--ease-ui), transform 0.3s var(--ease-ui);
}
.dots a:hover {
  background: rgba(26, 22, 19, 0.45);
}
.dots a[aria-current='true'] {
  background: var(--ink);
  transform: scale(1.5);
}

/* ------------------------------------------------------------------ slide */
.slide {
  min-height: 100vh;
  display: flex;
  align-items: center;
  scroll-snap-align: start;
  /* A deck slide has to fit one screen, so the rhythm follows viewport height. */
  padding: clamp(64px, 9.5vh, 132px) 0 clamp(44px, 7vh, 88px);
  border-top: 1px solid var(--sand-40);
}
.slide:first-child {
  border-top: 0;
}
.slide--hero,
.slide--end {
  position: relative;
  background:
    radial-gradient(70% 90% at 50% 0%, var(--sand-20), transparent 70%),
    var(--paper);
}

.wrap {
  width: min(1080px, calc(100% - 56px));
  margin-inline: auto;
}
.center {
  text-align: center;
}
.center .lead,
.center .sub {
  margin-inline: auto;
}

/* ------------------------------------------------------------------ type */
.eyebrow {
  margin: 0 0 clamp(12px, 2vh, 22px);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.display {
  margin: 0;
  font-family: var(--display);
  font-weight: 350;
  font-size: clamp(34px, min(5.2vw, 8.2vh), 58px);
  line-height: 0.95;
  letter-spacing: -0.02em;
}
.display--xl {
  font-size: clamp(42px, min(7vw, 11vh), 77px);
}
.display em {
  font-style: italic;
  font-weight: 300;
}

.lead {
  max-width: 56ch;
  margin: clamp(16px, 2.6vh, 26px) 0 0;
  font-size: clamp(15.5px, 1.5vw, 19px);
  color: var(--muted);
}
.sub {
  max-width: 62ch;
  margin: clamp(12px, 2vh, 22px) 0 0;
  color: var(--muted);
}
.note {
  max-width: 66ch;
  margin: clamp(20px, 3.4vh, 40px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--sand-40);
  color: var(--muted);
  font-size: 15.5px;
}
.mono {
  font-family: var(--mono);
  font-size: 0.92em;
  color: var(--ink);
}

/* ------------------------------------------------------------------ pills */
.pillrow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 34px;
}
.pill {
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--sand-40);
  background: var(--white);
  font-size: 14px;
  color: var(--muted);
}
.pill--solid {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.scrollcue {
  position: absolute;
  /* Centred with margins, not translateX: .reveal.in resets transform to none. */
  left: 0;
  right: 0;
  bottom: 40px;
  width: max-content;
  margin-inline: auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.scrollcue::after {
  content: '';
  display: block;
  width: 1px;
  height: 26px;
  margin: 10px auto 0;
  background: linear-gradient(var(--muted), transparent);
}

/* ------------------------------------------------------------------ grids */
.grid {
  display: grid;
  gap: 20px;
  margin-top: clamp(26px, 4.4vh, 56px);
}
.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  padding: clamp(20px, 3vh, 30px) 28px clamp(22px, 3.2vh, 32px);
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--sand-40);
}
.card__num {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
}
.card h3 {
  margin: clamp(10px, 1.6vh, 16px) 0 10px;
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(19px, 2.7vh, 23px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  font-size: 15.5px;
  color: var(--muted);
}

.panel {
  padding: 32px 30px;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--sand-40);
}
.panel--muted {
  background: var(--sand-20);
}
.panel h3 {
  margin: 0 0 20px;
  font-family: var(--display);
  font-weight: 400;
  font-size: 24px;
  letter-spacing: -0.01em;
}
.ticks,
.crosses {
  margin: 0;
  padding: 0;
  list-style: none;
}
.ticks li,
.crosses li {
  position: relative;
  padding: 11px 0 11px 30px;
  border-top: 1px solid var(--hair);
  font-size: 15.5px;
}
.ticks li:first-child,
.crosses li:first-child {
  border-top: 0;
}
.ticks li::before,
.crosses li::before {
  position: absolute;
  left: 0;
  font-family: var(--mono);
  font-size: 15px;
}
.ticks li::before {
  content: '+';
  color: var(--ink);
}
.crosses li::before {
  content: '\2013';
  color: var(--muted);
}
.crosses li {
  color: var(--muted);
}

/* ------------------------------------------------------------------ steps */
.steps {
  margin: clamp(16px, 2.8vh, 40px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hair);
}
.step {
  display: flex;
  gap: 22px;
  align-items: baseline;
  padding: clamp(8px, 1.3vh, 17px) 4px;
  border-bottom: 1px solid var(--hair);
}
.step__n {
  flex: none;
  width: 30px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}
.step h3 {
  margin: 0 0 3px;
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(17px, 2.4vh, 23px);
  letter-spacing: -0.01em;
}
.step p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  color: var(--muted);
}

/* ------------------------------------------------------------------ stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: clamp(26px, 4.4vh, 56px);
}
.stat {
  padding: clamp(20px, 3vh, 30px) 26px;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--sand-40);
}
.stat__v {
  display: block;
  font-family: var(--display);
  font-weight: 350;
  font-size: clamp(38px, 4.4vw, 54px);
  line-height: 1;
  letter-spacing: -0.03em;
}
.stat__l {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--muted);
}

/* ------------------------------------------------------------------ asks */
.asks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: clamp(26px, 4.4vh, 56px) 0 0;
  text-align: left;
}
.ask {
  padding: 26px 24px;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--sand-40);
}
.ask__n {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
}
.ask p {
  margin: 12px 0 0;
  font-size: 16px;
}

/* ------------------------------------------------------------------ reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--ease-reveal),
    transform 0.7s var(--ease-reveal);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ------------------------------------------------------------------ narrow */
@media (max-width: 900px) {
  .grid--3,
  .grid--2,
  .stats,
  .asks {
    grid-template-columns: 1fr;
  }
  .slide {
    padding: 110px 0 64px;
    min-height: auto;
  }
  /* The hero is no longer full-height here, so the cue would land on the pills. */
  .scrollcue {
    display: none;
  }
  .dots {
    display: none;
  }
  .nav__meta {
    display: none;
  }
  .nav__sep {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}