:root {
  --paper: #f7f5ef;
  --white: #fffefa;
  --ink: #121212;
  --muted: #5a584f;
  --line: #c9c4b8;
  --blue: #0a4aa5;
  --red: #e31b23;
  --yellow: #f0aa13;
  --orange: #d94a1d;
  --content: 1240px;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", "Century Gothic", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  transform: translateY(-160%);
  background: var(--ink);
  color: var(--white);
  padding: 10px 14px;
}

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

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  width: 100%;
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4vw;
  border-bottom: 1px solid rgba(18, 18, 18, 0.2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  font-weight: 650;
}

.brand-mark {
  position: relative;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
}

.mark-piece {
  position: absolute;
  width: 23px;
  height: 23px;
}

.mark-blue {
  top: 0;
  left: 0;
  background: var(--blue);
  border-radius: 0 12px 12px 12px;
}

.mark-yellow {
  top: 0;
  right: 0;
  background: var(--yellow);
  border-radius: 12px 12px 12px 0;
}

.mark-red {
  bottom: 0;
  left: 0;
  background: var(--red);
  border-radius: 12px 0 12px 12px;
}

.mark-orange {
  right: 0;
  bottom: 0;
  background: var(--orange);
  border-radius: 0 12px 12px 12px;
}

.mark-center {
  position: absolute;
  z-index: 2;
  inset: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  line-height: 1;
}

.mark-center i {
  position: absolute;
  right: -8px;
  bottom: 5px;
  font-family: Arial, sans-serif;
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
}

.brand-name {
  font-size: 17px;
}

nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

nav a {
  font-size: 14px;
  font-weight: 620;
  text-decoration: none;
}

.nav-join {
  border-bottom: 2px solid var(--ink);
  padding: 8px 0 5px;
}

.hero {
  position: relative;
  min-height: 84svh;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 118px 4vw 70px;
  background: var(--paper);
  isolation: isolate;
}

.hero-photo {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transform: scale(1.025);
  transition: transform 600ms ease;
}

.hero-content {
  width: min(640px, 48vw);
  max-width: var(--content);
}

.eyebrow,
.section-number {
  margin: 0 0 22px;
  font-size: 12px;
  line-height: 1.25;
  font-weight: 750;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: 96px;
  line-height: 0.92;
  font-weight: 520;
}

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

.hero-lockup {
  position: relative;
  width: min(640px, 100%);
  container-type: inline-size;
}

.hero-lockup > img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-tagline {
  position: absolute;
  top: calc(91.4% - 0.14em);
  right: 4.53%;
  width: auto;
  margin: 0;
  white-space: nowrap;
  font-family: "Bodoni 72", Didot, serif;
  font-size: clamp(18px, 6.36cqi, 41px);
  font-style: italic;
  font-weight: 400;
  line-height: 1;
  text-align: right;
  word-spacing: 0.08em;
}

.hero-tagline em {
  color: var(--red);
  font-weight: 700;
}

.hero-tagline-dots {
  display: inline-flex;
  gap: 0.14em;
  margin-left: 0.16em;
  vertical-align: 0.1em;
}

.hero-tagline-dots i {
  width: 0.2em;
  height: 0.2em;
  border-radius: 50%;
  background: var(--blue);
}

.hero-tagline-dots i:nth-child(2) {
  background: var(--red);
}

.hero-tagline-dots i:nth-child(3) {
  background: var(--yellow);
}

.hero-copy {
  max-width: 530px;
  margin: clamp(36px, 4vw, 54px) 0 28px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.45;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 0 20px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  font-size: 14px;
  font-weight: 720;
  text-decoration: none;
}

.button-primary {
  background: var(--ink);
  color: var(--white);
}

.button:hover,
.button:focus-visible {
  background: var(--blue);
  border-color: var(--blue);
}

.hero-index {
  position: absolute;
  left: 4vw;
  right: 4vw;
  bottom: 18px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  font-weight: 750;
}

.index-line {
  height: 1px;
  background: var(--ink);
  opacity: 0.45;
}

.section-inner {
  width: min(calc(100% - 8vw), var(--content));
  margin: 0 auto;
}

.thesis-band {
  padding: 78px 0;
  background: var(--yellow);
  border-bottom: 1px solid var(--ink);
}

.thesis-layout {
  display: grid;
  grid-template-columns: 180px minmax(340px, 1.3fr) minmax(260px, 0.7fr);
  gap: 42px;
  align-items: start;
}

.thesis-layout h2,
.section-heading h2,
.join-copy h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.04;
  font-weight: 560;
}

.thesis-layout > p:last-child,
.join-copy > p:last-child {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.5;
}

.feature {
  padding: 112px 0;
  background: var(--white);
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(330px, 0.85fr) minmax(420px, 1.15fr);
  gap: 8vw;
  align-items: center;
}

.feature-copy h2 {
  margin: 0 0 28px;
  font-size: 68px;
  line-height: 0.98;
  font-weight: 560;
}

.feature-copy h2 span {
  color: var(--red);
}

.feature-copy > p:not(.section-number):not(.publish-note) {
  margin: 0;
  max-width: 520px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.55;
}

.publish-note {
  display: inline-block;
  margin: 30px 0 0;
  padding-top: 10px;
  border-top: 3px solid var(--yellow);
  font-size: 14px;
  font-weight: 750;
}

.word-study {
  position: relative;
  min-height: 480px;
  border: 1px solid var(--ink);
  overflow: hidden;
  background: var(--paper);
}

.word-row {
  position: relative;
  height: 50%;
  display: flex;
  align-items: center;
  padding: 28px 46px;
}

.word-correct {
  border-bottom: 1px solid var(--ink);
}

.word-label {
  width: 62px;
  font-size: 11px;
  font-weight: 800;
}

.word-row strong {
  font-size: 132px;
  line-height: 1;
  font-weight: 520;
}

.word-correct strong {
  color: var(--blue);
}

.word-wrong strong {
  color: var(--red);
}

.sound-dots {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-left: 28px;
}

.sound-dots i {
  width: 14px;
  height: 14px;
  background: var(--ink);
  border-radius: 50%;
}

.strike {
  position: absolute;
  left: 94px;
  width: 215px;
  height: 6px;
  background: var(--ink);
  transform: rotate(-10deg);
}

.ampersand-study {
  position: absolute;
  right: -30px;
  bottom: -55px;
  width: 190px;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yellow);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 112px;
  line-height: 1;
}

.ampersand-study span {
  position: absolute;
  top: 69px;
  right: 25px;
  display: flex;
  gap: 5px;
  transform: rotate(38deg);
}

.ampersand-study i {
  width: 9px;
  height: 9px;
  background: var(--ink);
  border-radius: 50%;
}

.topic-index {
  padding: 106px 0 122px;
  background: var(--paper);
  border-top: 1px solid var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 42px;
  margin-bottom: 66px;
}

.topic-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.topic {
  min-height: 380px;
  padding: 34px 26px 30px;
  border-right: 1px solid var(--ink);
}

.topic:last-child {
  border-right: 0;
}

.topic-shape {
  width: 74px;
  height: 74px;
  margin-bottom: 55px;
}

.shape-circle {
  background: var(--blue);
  border-radius: 50%;
}

.shape-square {
  background: var(--red);
}

.shape-arch {
  background: var(--ink);
  border-radius: 38px 38px 0 0;
}

.shape-triangle {
  width: 0;
  height: 0;
  border-left: 42px solid transparent;
  border-right: 42px solid transparent;
  border-bottom: 74px solid var(--yellow);
}

.topic > p {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.topic h3 {
  margin: 0 0 24px;
  font-size: 25px;
  line-height: 1.13;
  font-weight: 590;
}

.topic > span {
  display: block;
  color: var(--muted);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.48;
}

.topic-source {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.topic-source b {
  font-size: 14px;
  font-weight: 500;
  transition: transform 180ms ease;
}

.topic-source:hover b,
.topic-source:focus-visible b {
  transform: translate(3px, -3px);
}

.social-section {
  padding: 105px 0 120px;
  background: var(--blue);
  color: var(--white);
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.75);
}

.social-link {
  min-height: 132px;
  display: grid;
  grid-template-columns: 54px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 22px 24px 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.75);
  text-decoration: none;
}

.social-link:nth-child(odd) {
  border-right: 1px solid rgba(255, 255, 255, 0.75);
  padding-right: 34px;
}

.social-link:nth-child(even) {
  padding-left: 34px;
}

.social-glyph {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  background: var(--white);
  color: var(--ink);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 900;
}

.social-link > span:nth-child(2) {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.social-link strong {
  font-size: 21px;
}

.social-link small {
  font-size: 13px;
  opacity: 0.8;
}

.social-link b {
  font-size: 22px;
  font-weight: 400;
  transition: transform 180ms ease;
}

.social-link:hover b,
.social-link:focus-visible b {
  transform: translate(4px, -4px);
}

.social-link:hover .social-glyph,
.social-link:focus-visible .social-glyph {
  background: var(--yellow);
}

.join-section {
  position: relative;
  overflow: hidden;
  padding: 118px 0 130px;
  background: var(--ink);
  color: var(--white);
}

.join-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(350px, 0.9fr) minmax(420px, 1.1fr);
  gap: 9vw;
  align-items: end;
}

.join-copy h2 {
  max-width: 570px;
  margin-bottom: 24px;
  font-size: 58px;
}

.signup-form label {
  display: block;
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.form-trap {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
}

.signup-form input {
  min-width: 0;
  height: 58px;
  padding: 0 18px;
  border: 1px solid var(--white);
  border-radius: 3px 0 0 3px;
  background: transparent;
  color: var(--white);
  outline: 0;
}

.signup-form input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.signup-form input:focus {
  box-shadow: inset 0 0 0 2px var(--yellow);
}

.signup-form button {
  height: 58px;
  padding: 0 21px;
  border: 1px solid var(--yellow);
  border-radius: 0 3px 3px 0;
  background: var(--yellow);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.signup-form button:hover,
.signup-form button:focus-visible {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
}

.signup-form button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.form-message {
  min-height: 24px;
  margin: 12px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
}

.join-shape {
  position: absolute;
  opacity: 0.95;
}

.join-circle {
  width: 190px;
  height: 190px;
  right: 8%;
  top: -122px;
  background: var(--blue);
  border-radius: 50%;
}

.join-square {
  width: 88px;
  height: 88px;
  right: 0;
  bottom: 0;
  background: var(--red);
}

.join-triangle {
  left: -54px;
  bottom: -20px;
  width: 0;
  height: 0;
  border-left: 84px solid transparent;
  border-right: 84px solid transparent;
  border-bottom: 146px solid var(--yellow);
  transform: rotate(18deg);
}

footer {
  padding: 28px 0;
  background: var(--paper);
  border-top: 1px solid var(--ink);
}

.footer-layout {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
}

.footer-mark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
}

.footer-mark span {
  margin-left: -5px;
  color: var(--red);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 900;
}

footer p {
  margin: 0;
  font-size: 12px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

@media (max-width: 980px) {
  .hero {
    min-height: 78svh;
  }

  .hero-photo {
    object-position: 42% center;
    opacity: 0.58;
  }

  .hero-content {
    width: 68%;
  }

  .hero h1 {
    font-size: 72px;
  }

  .thesis-layout {
    grid-template-columns: 140px 1fr;
  }

  .thesis-layout > p:last-child {
    grid-column: 2;
  }

  .feature-grid,
  .join-layout {
    grid-template-columns: 1fr;
    gap: 60px;
  }

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

  .topic:nth-child(2) {
    border-right: 0;
  }

  .topic:nth-child(-n + 2) {
    border-bottom: 1px solid var(--ink);
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 68px;
    padding: 0 20px;
  }

  .brand-name {
    font-size: 15px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
  }

  .mark-piece {
    width: 20px;
    height: 20px;
  }

  .mark-center {
    inset: 9px;
    font-size: 18px;
  }

  nav a:not(.nav-join) {
    display: none;
  }

  .nav-join {
    font-size: 12px;
  }

  .hero {
    min-height: 80svh;
    align-items: flex-end;
    padding: 96px 20px 72px;
  }

  .hero-photo {
    object-position: 62% center;
    opacity: 0.36;
  }

  .hero-content {
    width: 100%;
  }

  .hero h1 {
    font-size: 54px;
    line-height: 0.95;
  }

  .hero-tagline {
    word-spacing: 0.04em;
  }

  .hero-copy {
    max-width: 430px;
    font-size: 17px;
  }

  .hero-index {
    left: 20px;
    right: 20px;
  }

  .section-inner {
    width: calc(100% - 40px);
  }

  .thesis-band,
  .feature,
  .topic-index,
  .social-section,
  .join-section {
    padding-top: 78px;
    padding-bottom: 82px;
  }

  .thesis-layout,
  .section-heading {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .thesis-layout > p:last-child {
    grid-column: auto;
  }

  .thesis-layout h2,
  .section-heading h2,
  .join-copy h2 {
    font-size: 38px;
  }

  .feature-copy h2 {
    font-size: 46px;
  }

  .feature-grid {
    gap: 48px;
  }

  .word-study {
    min-height: 360px;
  }

  .word-row {
    padding: 22px 24px;
  }

  .word-label {
    width: 48px;
  }

  .word-row strong {
    font-size: 92px;
  }

  .strike {
    left: 72px;
    width: 155px;
  }

  .sound-dots {
    gap: 7px;
    margin-left: 16px;
  }

  .sound-dots i {
    width: 10px;
    height: 10px;
  }

  .ampersand-study {
    width: 130px;
    height: 130px;
    right: -26px;
    bottom: -40px;
    font-size: 76px;
  }

  .ampersand-study span {
    top: 48px;
    right: 16px;
  }

  .ampersand-study i {
    width: 6px;
    height: 6px;
  }

  .section-heading {
    margin-bottom: 44px;
  }

  .topic-list,
  .social-grid {
    grid-template-columns: 1fr;
  }

  .topic {
    min-height: 300px;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .topic:last-child {
    border-bottom: 0;
  }

  .topic-shape {
    margin-bottom: 36px;
  }

  .social-link,
  .social-link:nth-child(odd),
  .social-link:nth-child(even) {
    min-height: 106px;
    padding: 18px 0;
    border-right: 0;
  }

  .join-layout {
    gap: 50px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .signup-form input,
  .signup-form button {
    border-radius: 3px;
  }

  .footer-layout {
    grid-template-columns: auto 1fr;
  }

  .footer-layout p:last-child {
    grid-column: 2;
  }
}

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

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

  .hero-photo,
  .social-link b,
  .topic-source b {
    transition: none;
  }
}