:root {
  --ink: #171717;
  --muted: #6f6f6f;
  --line: #dedede;
  --paper: #fff;
  --soft: #f6f6f4;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, Arial, Helvetica, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
}

a {
  color: inherit;
  text-underline-offset: 4px;
}

a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

h1 {
  max-width: 830px;
  font-size: clamp(3rem, 6.7vw, 6.5rem);
  font-weight: 560;
  letter-spacing: -0.065em;
  line-height: 0.95;
}

h2 {
  max-width: 660px;
  font-size: clamp(2rem, 4vw, 3.8rem);
  font-weight: 560;
  letter-spacing: -0.05em;
  line-height: 1;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
}

.page-width {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.site-header nav,
.site-footer div {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-header nav > a:not(.button),
.site-footer a {
  color: var(--muted);
  font-size: 0.82rem;
  text-decoration: none;
}

.site-header nav > a:not(.button):hover,
.site-footer a:hover {
  color: var(--ink);
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 19px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9rem;
  font-weight: 550;
  text-decoration: none;
}

.button:hover {
  background: #333;
}

.button-small {
  min-height: 36px;
  padding-inline: 14px;
  font-size: 0.78rem;
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  padding-top: clamp(56px, 7vw, 100px);
}

.hero-copy {
  display: grid;
  justify-items: start;
}

.lead {
  max-width: 660px;
  margin-top: 30px;
  color: #444;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}

.text-link {
  font-size: 0.9rem;
}

.plain-note {
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.78rem;
}

.product-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--soft);
  box-shadow: 0 24px 70px rgb(0 0 0 / 8%);
}

.detail-frame {
  aspect-ratio: 4 / 3;
}

.detail-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.task-time-frame {
  aspect-ratio: 17 / 16;
}

.hero-frame {
  margin-top: clamp(42px, 5vw, 72px);
}

.demo {
  margin-inline: 0;
}

.video-frame {
  position: relative;
}

.video-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--soft);
}

.selection-video-frame video {
  aspect-ratio: 53 / 36;
}

.video-toggle {
  position: absolute;
  right: 12px;
  bottom: 12px;
  min-width: 55px;
  padding: 6px 10px;
  border: 1px solid #fff;
  background: #171717;
  color: #fff;
  font: inherit;
  font-size: 0.72rem;
  cursor: pointer;
}

.video-toggle:focus-visible {
  outline: 2px solid #171717;
  outline-offset: 3px;
}

.section {
  padding-block: clamp(88px, 12vw, 150px);
  border-top: 1px solid var(--line);
}

.steps,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 58px;
  background: var(--line);
  border: 1px solid var(--line);
}

.steps article,
.faq-grid article {
  min-height: 218px;
  padding: 28px;
  background: var(--paper);
}

.steps span {
  display: block;
  margin-bottom: 64px;
  color: var(--muted);
  font-size: 0.72rem;
}

.steps p,
.faq-grid p,
.section-copy p,
.trust > p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.split {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  align-items: center;
  gap: clamp(48px, 8vw, 110px);
}

.split-reverse {
  grid-template-columns: 1.3fr 0.7fr;
}

.split-reverse .section-copy {
  order: 2;
}

.section-copy p:last-child {
  max-width: 420px;
  margin-top: 24px;
}

.trust {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  gap: clamp(44px, 10vw, 140px);
  background: var(--soft);
  border: 0;
  padding-inline: clamp(28px, 6vw, 78px);
}

.trust > p {
  align-self: end;
  max-width: 440px;
  margin: 0;
  color: #444;
  font-size: 1rem;
}

.faq-grid article {
  min-height: 154px;
}

.closing {
  padding-block: clamp(88px, 13vw, 170px);
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 34px;
  border-top: 1px solid var(--line);
}

.site-footer {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

@media (max-width: 760px) {
  .page-width {
    width: min(100% - 30px, 1180px);
  }

  .site-header {
    min-height: 68px;
  }

  .site-header nav > a:not(.button) {
    display: none;
  }

  h1 {
    font-size: clamp(3.15rem, 14vw, 4.8rem);
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 17px;
  }

  .steps,
  .faq-grid,
  .split,
  .split-reverse,
  .trust {
    grid-template-columns: 1fr;
  }

  .steps article {
    min-height: 170px;
  }

  .steps span {
    margin-bottom: 38px;
  }

  .split-reverse .section-copy {
    order: 0;
  }

  .trust {
    gap: 34px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}

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