@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600&family=Inter:wght@400;500;600;700&display=swap");

:root {
  --paper: #f6f0e3;
  --paper-deep: #ebe0c9;
  --paper-soft: #fff8ea;
  --line: #d8c9aa;
  --ink: #1d1a16;
  --ink-soft: #3d352b;
  --ink-muted: #756958;
  --accent: #9d3d2b;
  --accent-strong: #74291f;
  --jade: #2f6f5e;
  --blue: #2f5f8a;
  --gold: #94743a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(
    rgba(29, 26, 22, 0.055) 0.8px,
    transparent 0.8px
  );
  background-size: 18px 18px;
  opacity: 0.32;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
  border-bottom: 1px solid rgba(157, 61, 43, 0.28);
}

a:hover {
  border-bottom-color: var(--accent-strong);
}

header.site {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246, 240, 227, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

header.site .inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  border: 0;
  font-weight: 700;
  font-size: 18px;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  border: 1px solid var(--line);
}

nav.site {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}

nav.site a {
  color: var(--ink-muted);
  border: 0;
  font-size: 13px;
  font-weight: 600;
}

nav.site a:hover {
  color: var(--ink);
}

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

section {
  padding: 76px 0;
  border-bottom: 1px solid var(--line);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(310px, 0.92fr);
  gap: 60px;
  align-items: center;
  padding: 64px 0;
}

.hero h1,
.section-title,
.page h1,
.page h2,
h3 {
  font-family: "Noto Serif SC", Georgia, serif;
  font-weight: 500;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 720px;
  margin: 0 0 24px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.04;
}

.lede {
  max-width: 640px;
  margin: 0 0 28px;
  color: var(--ink-soft);
  font-size: 19px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.cta {
  display: inline-flex;
  flex-direction: column;
  min-width: 168px;
  padding: 13px 22px 14px;
  background: var(--ink);
  color: var(--paper-soft);
  border: 0;
  border-radius: 7px;
  font-weight: 700;
  line-height: 1.15;
}

.cta .meta {
  margin-bottom: 4px;
  color: rgba(255, 248, 234, 0.62);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cta-aside {
  color: var(--ink-muted);
  font-size: 14px;
}

.phone {
  width: min(100%, 360px);
  margin: 0 auto;
  padding: 13px;
  background: #1f211e;
  border-radius: 34px;
  box-shadow: 0 28px 60px rgba(29, 26, 22, 0.24);
}

.screen {
  min-height: 610px;
  padding: 28px 20px 20px;
  background: var(--paper-soft);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
}

.topline {
  display: flex;
  justify-content: space-between;
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 700;
}

.meaning {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 14px;
}

.writing-square {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  margin: 28px 0 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(
      90deg,
      transparent calc(50% - 0.5px),
      rgba(216, 201, 170, 0.7) 50%,
      transparent calc(50% + 0.5px)
    ),
    linear-gradient(
      0deg,
      transparent calc(50% - 0.5px),
      rgba(216, 201, 170, 0.7) 50%,
      transparent calc(50% + 0.5px)
    ),
    var(--paper);
}

.writing-square::before,
.writing-square::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      45deg,
      transparent calc(50% - 0.5px),
      rgba(216, 201, 170, 0.55) 50%,
      transparent calc(50% + 0.5px)
    ),
    linear-gradient(
      -45deg,
      transparent calc(50% - 0.5px),
      rgba(216, 201, 170, 0.55) 50%,
      transparent calc(50% + 0.5px)
    );
}

.writing-square span {
  position: relative;
  z-index: 1;
  color: rgba(29, 26, 22, 0.84);
  font-family: "Noto Serif SC", serif;
  font-size: 124px;
}

.attempt-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.attempt-strip span {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  color: rgba(29, 26, 22, 0.68);
  font-family: "Noto Serif SC", serif;
  font-size: 32px;
  background: var(--paper);
}

.controls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: auto;
  padding-top: 22px;
}

.controls button {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  padding: 10px 8px;
}

.controls .primary {
  border-color: var(--jade);
  background: var(--jade);
  color: #fff;
}

.section-title {
  max-width: 760px;
  margin: 0 0 28px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px 32px;
}

.features article,
.data-grid > div {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.features .num {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}

h3 {
  margin: 0 0 8px;
  font-size: 21px;
}

p {
  color: var(--ink-soft);
}

.features p:last-child,
.data-grid p:last-child {
  margin-bottom: 0;
}

.split {
  display: grid;
  grid-template-columns: 0.86fr 1fr;
  gap: 64px;
}

.split p:first-child {
  margin-top: 0;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}

.page {
  max-width: 720px;
  padding-top: 64px;
  padding-bottom: 80px;
}

.page h1 {
  margin: 0 0 24px;
  font-size: clamp(38px, 6vw, 62px);
  line-height: 1.08;
}

.page h2 {
  margin: 42px 0 10px;
  font-size: 25px;
}

.page ul {
  padding-left: 22px;
  color: var(--ink-soft);
}

.page li {
  margin: 8px 0;
}

.page dl {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px 20px;
  color: var(--ink-soft);
}

.page dt {
  color: var(--ink);
  font-weight: 700;
}

.page dd {
  margin: 0;
}

footer.site {
  max-width: 1120px;
  margin: 0 auto;
  padding: 44px 28px 72px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--ink-muted);
}

footer.site p {
  max-width: 560px;
  margin: 0;
  color: var(--ink-muted);
}

footer.site div {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  flex-wrap: wrap;
}

footer.site a {
  color: var(--ink-muted);
  border: 0;
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 820px) {
  header.site .inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 20px;
  }

  nav.site {
    gap: 16px;
  }

  main {
    padding: 0 20px;
  }

  .hero,
  .split {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero {
    min-height: 0;
    padding-top: 54px;
  }

  .features,
  .data-grid {
    grid-template-columns: 1fr;
  }

  .screen {
    min-height: 560px;
  }

  footer.site {
    flex-direction: column;
    padding-inline: 20px;
  }
}

@media (max-width: 460px) {
  .hero h1 {
    font-size: 40px;
  }

  .writing-square span {
    font-size: 104px;
  }

  .controls button {
    font-size: 12px;
    padding-inline: 4px;
  }

  .page dl {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}