* {
  box-sizing: border-box;
}

:root:lang(ko) {
  --serif: var(--serif-korean-ui);
  --sans: var(--sans-korean-scripture);
}

:root:lang(ja) {
  --serif: var(--serif-japanese);
  --sans: var(--sans-japanese);
}

:root:lang(it) {
  --serif: var(--serif-italian);
}

:root:lang(fr) {
  --serif: var(--serif-french);
}

:root:lang(es) {
  --serif: var(--serif-spanish);
}

body {
  --about-blue-light: #e8f1f4;
  --about-blue-mid: #bed8ea;
  --about-blue-deep: #7f9db8;

  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background-color: var(--canvas);
  background-image:
    radial-gradient(var(--grain) 0.65px, transparent 0.65px),
    radial-gradient(ellipse at 92% 8%, rgba(190, 216, 234, 0.34), transparent 33rem),
    radial-gradient(ellipse at 8% 78%, rgba(220, 215, 247, 0.19), transparent 36rem),
    linear-gradient(135deg, rgba(220, 232, 235, 0.38), transparent 42%, rgba(245, 236, 212, 0.26));
  background-size: 7px 7px, auto, auto, 100% 100%;
  background-attachment: fixed;
  font-family: var(--sans);
  font-size: var(--type-copy);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

.about-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0 clamp(22px, 6vw, 78px);
}

.about-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid rgba(71, 72, 67, 0.14);
}

.brand:hover .brand-mark {
  transform: rotate(0) scale(1.05);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 31px;
  height: 31px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  transform: rotate(-7deg);
  transition: transform 0.24s ease;
}

.brand-mark i {
  display: block;
  border-radius: 3px;
  border: 1px solid rgba(169, 124, 53, 0.82);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.44),
    0 1px 0 rgba(169, 124, 53, 0.72);
}

.brand-mark i:nth-child(1) {
  border-radius: 8px 3px 3px;
  background: var(--blue);
}

.brand-mark i:nth-child(2) {
  border-radius: 3px 8px 3px 3px;
  background: var(--lavender);
}

.brand-mark i:nth-child(3) {
  border-radius: 3px 3px 3px 8px;
  background: var(--pink);
}

.brand-mark i:nth-child(4) {
  border-radius: 3px 3px 8px;
  background: var(--yellow);
}

.brand-name {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-name strong {
  font-family: var(--serif);
  font-size: var(--type-brand);
  font-weight: var(--weight-medium);
  line-height: 1;
}

.brand-name small,
.eyebrow,
.about-footer {
  font-size: var(--type-label);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-label);
  color: #777972;
}

.return-link,
.primary-link,
.support-link {
  text-decoration: none;
}

.language-control {
  position: relative;
  display: block;
  flex: 0 0 136px;
}

.language-trigger {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid rgba(127, 157, 184, 0.58);
  border-radius: 6px;
  background:
    linear-gradient(
      135deg,
      rgba(255, 253, 249, 0.96),
      color-mix(in srgb, var(--about-blue-light) 68%, transparent)
    );
  color: var(--ink);
  font: inherit;
  font-size: var(--type-control);
  cursor: pointer;
  text-align: left;
  transition: background-color 0.16s, border-color 0.16s, box-shadow 0.16s;
}

.language-current {
  white-space: nowrap;
}

.language-trigger:hover,
.language-trigger:focus-visible,
.language-control:has(.language-menu:not([hidden])) .language-trigger {
  border-color: var(--about-blue-deep);
  background: linear-gradient(135deg, var(--about-blue-mid), var(--about-blue-light) 58%, #c3d3e5);
  box-shadow:
    0 0 0 2px rgba(127, 157, 184, 0.2),
    0 4px 12px rgba(74, 105, 134, 0.17);
}

.language-trigger:focus-visible,
.language-option:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.language-chevron {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-right: 1.5px solid var(--brass);
  border-bottom: 1.5px solid var(--brass);
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.18s ease;
}

.language-control:has(.language-menu:not([hidden])) .language-chevron {
  transform: translateY(2px) rotate(225deg);
}

.language-menu {
  position: absolute;
  z-index: 5;
  top: calc(100% + 8px);
  right: 0;
  width: max(100%, 176px);
  padding: 6px;
  border: 1px solid rgba(127, 157, 184, 0.62);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 248, 223, 0.34), transparent 58%),
    #fffdf9;
  box-shadow:
    0 0 0 2px rgba(127, 157, 184, 0.12),
    0 12px 28px rgba(41, 43, 42, 0.16),
    0 2px 6px rgba(91, 77, 47, 0.1);
}

.language-menu[hidden] {
  display: none;
}

.language-option {
  width: 100%;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: var(--type-control);
  text-align: left;
  cursor: pointer;
  transition: background-color 0.14s ease, color 0.14s ease;
}

.language-option:hover,
.language-option:focus-visible {
  background: linear-gradient(120deg, rgba(190, 216, 234, 0.7), rgba(232, 241, 244, 0.9));
  color: #344f68;
}

.language-option[aria-selected="true"] {
  background: linear-gradient(128deg, var(--about-blue-mid), var(--about-blue-light) 58%, #c3d3e5);
  color: #344f68;
  font-weight: var(--weight-semibold);
}

.language-option[aria-selected="true"]::after {
  color: #7b5d2f;
  content: "✓";
  font-size: 0.9em;
}

.return-link {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 5px;
  color: #777972;
  font-size: var(--type-small-copy);
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease;
}

.return-link:hover,
.return-link:focus-visible {
  border-color: var(--about-blue-deep);
  background: linear-gradient(128deg, var(--about-blue-mid), var(--about-blue-light) 58%, #c3d3e5);
  box-shadow:
    0 0 0 2px rgba(127, 157, 184, 0.2),
    0 4px 12px rgba(74, 105, 134, 0.17);
  color: #344f68;
  transform: translateY(-1px);
}

.return-link span:last-child {
  padding-left: 0;
  color: var(--brass-soft);
  transition: color 0.18s ease, transform 0.18s ease;
}

.return-link:hover span:last-child,
.return-link:focus-visible span:last-child {
  color: #7b5d2f;
  transform: translateX(2px);
}

.about-footer a:hover {
  color: var(--deep-teal);
}

.about-hero {
  max-width: 790px;
  padding: clamp(66px, 10vw, 120px) 0 74px;
  text-align: center;
  margin: 0 auto;
}

.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin: 0 0 19px;
}

.eyebrow span {
  color: var(--brass);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: var(--weight-regular);
}

h1 {
  max-width: 760px;
  margin: 0 auto;
  font-size: clamp(44px, 7vw, 76px);
  line-height: 1.02;
}

.hero-copy {
  max-width: 610px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 18px);
  line-height: var(--line-copy);
}

.primary-link {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  margin-top: 29px;
  padding: 0 19px;
  border: 1px solid #e2c36d;
  border-radius: 4px;
  background: linear-gradient(125deg, #fff2c5 0%, #fff8e4 54%, #fbe3e9 100%);
  color: #514833;
  box-shadow: 0 3px 0 #d4b86e;
  font-size: var(--type-control);
  font-weight: var(--weight-semibold);
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.primary-link:hover {
  box-shadow: 0 4px 0 #c9aa60;
  transform: translateY(-1px);
}

.primary-link span {
  color: var(--brass);
}

.hero-rule {
  width: min(360px, 70%);
  height: 1px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 75px auto 0;
  background: rgba(71, 72, 67, 0.16);
}

.hero-rule i {
  width: 7px;
  height: 7px;
  border: 1px solid rgba(71, 72, 67, 0.24);
  background: var(--canvas);
  transform: rotate(45deg);
}

.content-section {
  padding: 8px 0 82px;
}

.section-heading {
  max-width: 650px;
  margin: 0 auto 30px;
  text-align: center;
}

.section-heading .eyebrow {
  margin-bottom: 12px;
}

.section-heading h2,
.support-note h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.12;
}

.ethos-section h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 4.4vw, 48px);
  line-height: 1.08;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  position: relative;
  min-height: 205px;
  padding: 25px 27px 28px;
  border: 1px solid rgba(71, 72, 67, 0.12);
  background:
    linear-gradient(135deg, rgba(255, 253, 249, 0.94), color-mix(in srgb, var(--about-blue-light) 48%, transparent)),
    rgba(255, 253, 249, 0.66);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-3px);
  border-color: rgba(127, 157, 184, 0.72);
  box-shadow:
    0 0 0 1px rgba(127, 157, 184, 0.16),
    0 10px 24px rgba(74, 105, 134, 0.1);
}

.card-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--mark-fill), var(--mark-fill)) padding-box,
    linear-gradient(140deg, #fff4c9 0%, #a67d31 24%, #f8e6a8 47%, #806025 70%, #f5df9b 100%) border-box;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82), 0 1px 2px rgba(107, 81, 32, 0.19);
  font-size: 10px;
  font-weight: var(--weight-bold);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover .card-mark,
.feature-card:focus-within .card-mark {
  transform: rotate(-5deg) scale(1.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 2px 5px rgba(107, 81, 32, 0.28);
}

.card-mark--blue {
  --mark-fill: var(--blue);

  color: #456b76;
}

.card-mark--rose {
  --mark-fill: var(--pink);

  color: #8d5b68;
}

.card-mark--green {
  --mark-fill: var(--green);

  color: #526c4f;
}

.card-mark--gold {
  --mark-fill: var(--yellow);

  color: #806b3e;
}

.feature-card h3,
.install-item h3 {
  margin: 17px 0 8px;
  font-size: 23px;
}

.feature-card p,
.install-item p,
.ethos-section p,
.support-note > p:not(.eyebrow),
.section-intro,
.install-note {
  margin-bottom: 0;
  color: var(--muted);
  font-size: var(--type-small-copy);
  line-height: var(--line-copy);
}

.ethos-section {
  display: grid;
  grid-template-columns: 58px minmax(0, 650px);
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  padding: clamp(34px, 5vw, 58px) clamp(24px, 6vw, 78px);
  border: 1px solid rgba(127, 157, 184, 0.44);
  border-radius: 12px;
  background:
    linear-gradient(112deg, rgba(220, 235, 222, 0.7), rgba(255, 253, 249, 0.86) 52%, rgba(255, 242, 197, 0.58)),
    var(--canvas);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 12px 30px rgba(74, 105, 134, 0.09);
}

.ethos-ornament {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-top: 2px;
  border: 1px solid rgba(177, 139, 57, 0.38);
  border-radius: 50%;
  background: rgba(255, 253, 249, 0.72);
  color: var(--brass);
  font-size: 22px;
  text-align: center;
}

.ethos-section .eyebrow {
  justify-content: flex-start;
  margin-bottom: 11px;
}

.ethos-section p:not(.eyebrow) {
  max-width: 650px;
  margin-top: 16px;
}

.ethos-section .ethos-foundation {
  padding-left: 18px;
  border-left: 2px solid var(--brass-soft);
  color: var(--ink);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.65;
}

.install-section {
  padding-top: 80px;
}

.section-intro {
  margin-top: 14px;
}

.install-language {
  margin: 28px 0 34px;
  padding: clamp(20px, 3.2vw, 30px);
  border: 1px solid rgba(127, 157, 184, 0.42);
  border-radius: 9px;
  background:
    linear-gradient(120deg, rgba(232, 241, 244, 0.66), rgba(255, 253, 249, 0.86) 55%, rgba(255, 248, 223, 0.48)),
    var(--canvas);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82), 0 8px 22px rgba(74, 105, 134, 0.07);
}

.install-language-options {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.install-language-options legend {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(20px, 2.4vw, 25px);
  font-weight: var(--weight-medium);
}

.install-language-intro {
  margin: 7px 0 17px;
  color: var(--muted);
  font-size: var(--type-small-copy);
  line-height: var(--line-copy);
}

.install-language-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.install-language-option {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 11px;
  border: 1px solid rgba(71, 72, 67, 0.16);
  border-radius: 5px;
  background: rgba(255, 253, 249, 0.72);
  color: var(--ink);
  font-size: var(--type-control);
  cursor: pointer;
  transition: border-color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.install-language-option:hover,
.install-language-option:has(input:focus-visible) {
  border-color: var(--about-blue-deep);
  box-shadow: 0 0 0 2px rgba(127, 157, 184, 0.18);
}

.install-language-option:has(input:checked) {
  border-color: rgba(127, 157, 184, 0.75);
  background: linear-gradient(130deg, rgba(190, 216, 234, 0.72), rgba(232, 241, 244, 0.92));
  color: #344f68;
  font-weight: var(--weight-semibold);
}

.install-language-option input {
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
  margin: 0;
  accent-color: #6687a5;
}

.install-language-option input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.install-language-submit {
  min-height: 44px;
  display: block;
  margin: 17px auto 0;
  padding: 0 17px;
  border: 1px solid rgba(127, 157, 184, 0.74);
  border-radius: 5px;
  background: linear-gradient(135deg, #fffdf9, #dce8eb 78%, #c3d3e5);
  box-shadow: 0 2px 0 rgba(127, 157, 184, 0.18);
  color: #344f68;
  font: inherit;
  font-size: var(--type-control);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.install-language-submit:hover,
.install-language-submit:focus-visible {
  border-color: var(--about-blue-deep);
  box-shadow: 0 3px 10px rgba(74, 105, 134, 0.18);
  transform: translateY(-1px);
}

.install-language-submit:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.install-language-status {
  margin: 12px 0 0;
  color: #526c4f;
  font-size: var(--type-control);
  line-height: var(--line-copy);
}

.install-language-status:empty {
  display: none;
}

.install-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-areas:
    "mac iphone"
    "windows android";
  border-top: 1px solid rgba(71, 72, 67, 0.15);
}

.install-item {
  min-height: 125px;
  padding: 19px 24px 20px 0;
  border-bottom: 1px solid rgba(71, 72, 67, 0.15);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.install-item:hover {
  border-bottom-color: rgba(177, 139, 57, 0.6);
  background-color: rgba(255, 253, 249, 0.35);
}

.install-item--mac {
  grid-area: mac;
}

.install-item--iphone {
  grid-area: iphone;
}

.install-item--android {
  grid-area: android;
}

.install-item--windows {
  grid-area: windows;
}

.install-item--iphone,
.install-item--android {
  padding-left: 24px;
  border-left: 1px solid rgba(71, 72, 67, 0.15);
}

.install-item h3 {
  margin: 0 0 6px;
  font-size: 21px;
}

.install-item p strong {
  color: var(--ink);
  font-weight: var(--weight-semibold);
}

.install-note {
  margin-top: 16px;
  font-size: var(--type-control);
}

.support-note {
  margin: 4px 0 64px;
  padding: 35px clamp(22px, 6vw, 58px) 39px;
  border: 1px solid rgba(151, 121, 67, 0.23);
  background: linear-gradient(120deg, rgba(255, 248, 223, 0.8), rgba(255, 253, 249, 0.84) 54%, rgba(246, 232, 234, 0.55));
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.support-note:hover,
.support-note:focus-within {
  border-color: rgba(151, 121, 67, 0.48);
  box-shadow: 0 8px 22px rgba(91, 77, 47, 0.08);
}

.support-note .eyebrow {
  margin-bottom: 12px;
}

.support-note h2 {
  font-size: clamp(27px, 3.8vw, 37px);
}

.support-note > p:not(.eyebrow) {
  max-width: 620px;
  margin: 13px auto 0;
}

.support-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 19px;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(151, 121, 67, 0.5);
  color: #665536;
  font-size: var(--type-control);
  font-weight: var(--weight-semibold);
  transition: color 0.16s, border-color 0.16s;
}

.support-link:hover {
  border-color: var(--deep-teal);
  color: var(--deep-teal);
}

.support-link span {
  color: var(--brass);
}

.about-footer {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid rgba(71, 72, 67, 0.14);
}

.about-footer a {
  color: #777972;
  font-size: var(--type-control);
  font-weight: var(--weight-medium);
  letter-spacing: 0;
  text-decoration: none;
  transition: color 0.16s;
}

@media (max-width: 640px) {
  .about-header {
    min-height: 72px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 12px 0;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .language-control {
    grid-column: 2;
    grid-row: 1;
    width: min(105px, 27vw);
    min-width: 96px;
    justify-self: end;
  }

  .language-menu {
    width: 176px;
  }

  .return-link {
    grid-column: 1 / -1;
    justify-self: end;
  }

  .about-hero {
    padding: 68px 0 55px;
  }

  .hero-rule {
    margin-top: 58px;
  }

  .content-section {
    padding-bottom: 58px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 0;
  }

  .ethos-section {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 32px 24px;
  }

  .ethos-ornament {
    margin: 0 0 4px;
  }

  .install-section {
    padding-top: 58px;
  }
  .install-language-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .install-item {
    min-height: 0;
    padding-top: 17px;
    padding-bottom: 17px;
  }

  .install-item--iphone,
  .install-item--android {
    padding-left: 12px;
  }

  .install-item--mac,
  .install-item--windows {
    padding-right: 12px;
  }

  .support-note {
    margin-bottom: 44px;
    padding: 29px 21px 32px;
  }
}

@media (max-width: 380px) {
  .about-shell {
    padding-right: 17px;
    padding-left: 17px;
  }

  .brand {
    gap: 8px;
  }

  .return-link {
    font-size: var(--type-control);
  }

  .about-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding: 14px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}