@import url("https://unpkg.com/open-props");
@import url("https://unpkg.com/open-props/normalize.min.css");

:root {
  color-scheme: light;
  --ink: #121820;
  --ink-soft: #26323d;
  --muted: #65717c;
  --quiet: #8a949d;
  --paper: #fafafa;
  --surface: #ffffff;
  --surface-quiet: #f3f6f7;
  --line: #d9e0e4;
  --line-strong: #aebbc3;
  --accent: #0a6f77;
  --accent-strong: #084e55;
  --accent-warm: #c44e2f;
  --measure: 42rem;
  --page: 1180px;
  --radius-panel: 6px;
  --ease: var(--ease-out-3);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Hiragino Sans",
    "Yu Gothic",
    "YuGothic",
    "Noto Sans JP",
    sans-serif;
  scroll-behavior: smooth;
}

body {
  font-weight: 400;
  margin: 0;
  max-inline-size: none;
  min-width: 320px;
}

body::before {
  background: var(--ink);
  content: "";
  display: block;
  height: 4px;
}

body > header,
main,
body > footer {
  margin-inline: auto;
  max-width: var(--page);
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

body > header {
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(3.5rem, 9vw, 7rem);
}

main {
  display: grid;
  gap: clamp(4rem, 9vw, 7.5rem);
  padding-block-end: clamp(4rem, 8vw, 6rem);
}

body > footer {
  color: var(--quiet);
  font-size: 0.82rem;
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
}

body > footer::before {
  background: var(--line);
  content: "";
  display: block;
  height: 1px;
  margin-block-end: 1.5rem;
}

nav {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-block-end: clamp(4rem, 10vw, 8rem);

  & > a {
    display: inline-flex;
    outline-offset: 6px;
  }

  & img {
    display: block;
    height: 48px;
    object-fit: cover;
    width: 48px;
  }

  & ul {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: clamp(0.7rem, 2vw, 1.6rem);
    justify-content: flex-end;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  & li {
    color: var(--quiet);
    font-size: 0.84rem;
    font-weight: 650;
    letter-spacing: 0.02em;
    margin: 0;
  }

  & a:not(:has(img)) {
    color: var(--ink);
    text-decoration-color: transparent;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.42em;
    transition:
      color 160ms var(--ease),
      text-decoration-color 160ms var(--ease);

    &:hover,
    &:focus-visible {
      color: var(--accent);
      text-decoration-color: currentColor;
    }
  }
}

h1,
h2,
h3,
p,
figure,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3 {
  color: var(--ink);
  letter-spacing: 0;
}

h1 {
  font-size: clamp(3.4rem, 10vw, 7.4rem);
  font-weight: 800;
  line-height: 0.95;
  text-wrap: balance;
}

h2 {
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 780;
  line-height: 1;
  text-wrap: balance;
}

h3 {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 720;
  line-height: 1.25;
}

p,
li,
dd {
  color: var(--muted);
  font-weight: 400;
  line-height: 1.85;
}

a {
  color: var(--accent-strong);
  text-underline-offset: 0.22em;
}

hr {
  display: none;
}

section {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

section > header {
  align-items: end;
  border-block-start: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  padding-block-start: clamp(1rem, 2.5vw, 1.5rem);
}

section > header:has(p) {
  grid-template-columns: minmax(0, 0.95fr) minmax(16rem, 0.75fr);
}

section > header p {
  max-width: 34rem;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 760;
  letter-spacing: 0.14em;
  line-height: 1.3;
  text-transform: uppercase;
}

.button-link {
  align-items: center;
  background: var(--ink);
  border: 1px solid var(--ink);
  color: white;
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 720;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0.85rem 1.05rem;
  text-decoration: none;
  transition:
    background-color 160ms var(--ease),
    border-color 160ms var(--ease),
    color 160ms var(--ease);

  &:hover,
  &:focus-visible {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
    color: white;
  }
}

.translation-note {
  border-inline-start: 4px solid var(--accent);
  padding-inline-start: 1rem;
}

.text-link {
  color: var(--ink);
  font-weight: 720;
  text-decoration-color: var(--line-strong);

  &:hover,
  &:focus-visible {
    color: var(--accent-strong);
    text-decoration-color: currentColor;
  }
}

.hero-copy {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  max-width: 58rem;
}

.hero-copy > p {
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 2vw, 1.34rem);
  line-height: 1.9;
  max-width: var(--measure);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-block-start: 0.25rem;
}

.company-hero {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.42fr);
}

.company-meta {
  align-self: end;
  border-block: 1px solid var(--line);
  display: grid;
  gap: 0;

  & div {
    display: grid;
    gap: 0.6rem;
    grid-template-columns: 5.5rem minmax(0, 1fr);
    padding-block: 1rem;
  }

  & div + div {
    border-block-start: 1px solid var(--line);
  }

  & dt {
    color: var(--quiet);
    font-size: 0.72rem;
    font-weight: 760;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  & dd {
    color: var(--ink);
    font-size: 0.92rem;
    font-weight: 650;
    line-height: 1.55;
  }
}

.service-list {
  border-block-start: 1px solid var(--line);
  display: grid;
}

.service-item {
  border-block-end: 1px solid var(--line);
  display: grid;
  gap: clamp(1rem, 3vw, 2rem);
  grid-template-columns: 4rem minmax(10rem, 0.55fr) minmax(0, 1fr);
  padding-block: clamp(1.35rem, 4vw, 2.25rem);

  & .item-number {
    color: var(--accent-warm);
    font-size: 0.84rem;
    font-weight: 760;
  }

  & p {
    max-width: 36rem;
  }
}

.feature-work {
  align-items: stretch;
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
}

.feature-work-copy {
  display: grid;
  gap: 1rem;
  padding: clamp(1.4rem, 4vw, 2.4rem);

  & h3 {
    font-size: clamp(1.6rem, 3vw, 2.35rem);
  }

  & p {
    max-width: 32rem;
  }
}

.feature-work-media {
  background: var(--surface-quiet);
  border-inline-start: 1px solid var(--line);
  min-height: 18rem;
  overflow: hidden;

  & img {
    display: block;
    height: 100%;
    object-fit: cover;
    object-position: center;
    width: 100%;
  }
}

.product-hero {
  align-items: start;
  display: grid;
  gap: clamp(2rem, 6vw, 5rem);
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 0.36fr);
}

.product-hero-content {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.4rem);
  max-width: 56rem;
}

.app-icon {
  border-radius: 24%;
  box-shadow:
    0 1px 0 rgb(255 255 255 / 0.7) inset,
    0 18px 50px rgb(18 24 32 / 0.16);
  height: auto;
  width: 100%;
}

.product-kicker {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 780;
  letter-spacing: 0.14em;
  line-height: 1.3;
  text-transform: uppercase;
}

.product-hero h1 {
  font-size: clamp(2.75rem, 7.4vw, 6rem);
  line-height: 1.02;
  max-width: none;
}

.product-hero p:not(.product-kicker) {
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.85;
  max-width: 48rem;
}

.product-hero .hero-note {
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 720;
  line-height: 1.45;
}

.hero-product-card {
  align-items: center;
  display: grid;
  gap: 1.25rem;
  justify-items: center;
}

.hero-product-card .app-icon {
  max-width: 13rem;
}

.hero-proof-list {
  border-block: 1px solid var(--line);
  display: grid;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.hero-proof-list li {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 680;
  line-height: 1.45;
  margin: 0;
  padding-block: 0.78rem;
}

.hero-proof-list li + li {
  border-block-start: 1px solid var(--line);
}

.secondary-link {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);

  &:hover,
  &:focus-visible {
    background: var(--surface-quiet);
    border-color: var(--accent-strong);
    color: var(--accent-strong);
  }
}

.section-cta {
  margin-block-start: -0.75rem;
}

.sample-player-panel {
  background: var(--ink);
  border: 1px solid var(--ink);
  color: white;
  margin-block-start: clamp(0.75rem, 2vw, 1.25rem);
}

.sample-layout {
  display: grid;
  gap: 1px;
}

.sample-grid {
  background: rgb(255 255 255 / 0.16);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sample-card {
  background: var(--ink);
  display: grid;
  gap: 1rem;
  padding: clamp(1rem, 2.5vw, 1.35rem);
}

.sample-card-title {
  color: white;
  font-size: 0.86rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.listen-options {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sample-button {
  align-items: center;
  background: rgb(255 255 255 / 0.06);
  border: 1px solid rgb(255 255 255 / 0.2);
  color: white;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  gap: 0.55rem;
  justify-content: center;
  min-height: 3.7rem;
  padding: 0.75rem;
  transition:
    background-color 160ms var(--ease),
    border-color 160ms var(--ease);

  &:hover,
  &:focus-visible {
    background: rgb(255 255 255 / 0.12);
    border-color: rgb(255 255 255 / 0.38);
  }

  &[aria-pressed="true"] {
    background: white;
    border-color: white;
    color: var(--ink);
  }

  &.is-playing .play-mark {
    animation: pulse-play 1s var(--ease-in-out-3) infinite;
  }
}

.play-mark {
  border-block: 0.38rem solid transparent;
  border-inline-start: 0.56rem solid currentColor;
  flex: 0 0 auto;
  height: 0;
  width: 0;
}

.compare-panel {
  background: var(--ink);
  padding: 1rem;
}

.sample-audio {
  display: block;
  width: 100%;
}

.step-list {
  border-block-start: 1px solid var(--line);
  display: grid;
  gap: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.step-list li {
  border-block-end: 1px solid var(--line);
  color: var(--ink);
  display: grid;
  gap: 0.85rem;
  line-height: 1.55;
  margin: 0;
  min-height: 9rem;
  padding: 1.2rem;
}

.step-list li + li {
  border-inline-start: 1px solid var(--line);
}

.step-list span {
  color: var(--accent-warm);
  font-size: 0.82rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.benefit-grid,
.faq-list {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benefit-grid {
  background: var(--line);
  border: 1px solid var(--line);
}

.benefit-grid article {
  background: var(--surface);
  display: grid;
  gap: 0.75rem;
  min-height: 11rem;
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
}

.benefit-grid h3,
.faq-list h3 {
  font-size: 1.08rem;
  line-height: 1.35;
}

.pro-unlock-panel,
.final-cta-panel {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.4fr);
  padding: clamp(1.4rem, 4vw, 2.4rem);
}

.pro-unlock-panel > div,
.final-cta-panel > div {
  display: grid;
  gap: 1rem;
}

.check-list {
  display: grid;
  gap: 0.55rem;
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
}

.check-list li {
  color: var(--ink);
  line-height: 1.55;
  margin: 0;
  padding-inline-start: 1.45rem;
  position: relative;
}

.check-list li::before {
  border-block-end: 2px solid var(--accent);
  border-inline-end: 2px solid var(--accent);
  content: "";
  height: 0.7rem;
  inset-inline-start: 0;
  inset-block-start: 0.32rem;
  position: absolute;
  transform: rotate(42deg);
  width: 0.36rem;
}

.faq-list {
  border-block-start: 1px solid var(--line);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.faq-list article {
  border-block-end: 1px solid var(--line);
  display: grid;
  gap: 0.55rem;
  padding-block: 1.25rem;
}

.faq-list article:nth-child(odd) {
  padding-inline-end: clamp(1rem, 3vw, 2rem);
}

.faq-list article:nth-child(even) {
  border-inline-start: 1px solid var(--line);
  padding-inline-start: clamp(1rem, 3vw, 2rem);
}

.final-cta-panel .button-link {
  justify-self: end;
}

@keyframes pulse-play {
  50% {
    opacity: 0.45;
  }
}

.screenshot-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.screenshot-card {
  background: var(--surface);
  border: 1px solid var(--line);
  display: grid;
  overflow: hidden;

  &:first-child {
    grid-column: span 2;
  }

  & img {
    aspect-ratio: 16 / 10;
    display: block;
    height: auto;
    object-fit: cover;
    width: 100%;
  }

  & figcaption {
    border-block-start: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
    padding: 0.9rem 1rem 1rem;
  }
}

.legal-page {
  & > header {
    padding-block-end: clamp(2.5rem, 6vw, 4rem);
  }

  & h1 {
    font-size: clamp(2rem, 4.4vw, 3.5rem);
    line-height: 1.12;
    max-width: 20ch;
    text-wrap: balance;
  }

  & .hero-copy {
    max-width: 54rem;
  }

  & main {
    background: var(--surface);
    border-block-start: 1px solid var(--line);
    display: block;
    max-width: 900px;
    padding-block-start: clamp(1.8rem, 4vw, 3rem);

    & > * + * {
      margin-block-start: 1rem;
    }

    & h2 {
      font-size: clamp(1.35rem, 3vw, 1.9rem);
      line-height: 1.25;
      margin-block-start: 2.4rem;
    }
  }
}

@media (max-width: 900px) {
  section > header,
  .company-hero,
  .feature-work,
  .product-hero,
  .pro-unlock-panel,
  .final-cta-panel {
    grid-template-columns: 1fr;
  }

  .company-meta {
    max-width: 28rem;
  }

  .feature-work-media {
    border-block-start: 1px solid var(--line);
    border-inline-start: 0;
  }

  .screenshot-card:first-child {
    grid-column: auto;
  }

  .hero-product-card {
    justify-items: start;
  }

  .hero-product-card .app-icon {
    max-width: 8.5rem;
  }

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

  .step-list li:nth-child(odd) {
    border-inline-start: 0;
  }

  .final-cta-panel .button-link {
    justify-self: start;
  }
}

@media (max-width: 700px) {
  body > header,
  main,
  body > footer {
    padding-inline: 1rem;
  }

  nav {
    align-items: flex-start;
    flex-direction: column;
    margin-block-end: clamp(3rem, 12vw, 5rem);

    & ul {
      justify-content: flex-start;
    }
  }

  h1 {
    font-size: clamp(3.1rem, 17vw, 5rem);
  }

  .service-item {
    gap: 0.8rem;
    grid-template-columns: 1fr;
  }

  .sample-grid,
  .listen-options,
  .screenshot-grid,
  .step-list,
  .benefit-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .step-list li {
    min-height: 0;
  }

  .step-list li + li,
  .faq-list article:nth-child(even) {
    border-inline-start: 0;
  }

  .faq-list article:nth-child(odd),
  .faq-list article:nth-child(even) {
    padding-inline: 0;
  }
}