:root {
  color-scheme: light;
  --ink: #191919;
  --muted: #666663;
  --line: #deded9;
  --surface: #f5f5f2;
  --blue: #175fce;
  --blue-dark: #0d49a5;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(23, 95, 206, 0.35);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(222, 222, 217, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(calc(100% - 40px), var(--max));
  min-height: 66px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 15px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.hero {
  min-height: min(760px, calc(100svh - 66px));
  padding: 68px 20px 52px;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.hero-inner {
  width: min(100%, 920px);
  text-align: center;
}

.app-icon {
  width: clamp(150px, 22vw, 232px);
  height: auto;
  display: block;
  margin: 0 auto 34px;
  filter: drop-shadow(0 22px 34px rgba(0, 0, 0, 0.16));
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(46px, 8vw, 82px);
  line-height: 0.98;
  font-weight: 760;
}

.hero-copy {
  max-width: 760px;
  margin: 0 auto 30px;
  color: #40403e;
  font-size: clamp(20px, 2.6vw, 29px);
  line-height: 1.3;
}

.availability {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.availability::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #f2b51d;
  content: "";
}

.signal {
  width: min(100%, 720px);
  height: 18px;
  margin: 46px auto 0;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  overflow: hidden;
  border-radius: 4px;
}

.signal span:nth-child(1) { background: #cfcfcf; }
.signal span:nth-child(2) { background: #f6df31; }
.signal span:nth-child(3) { background: #35c6cb; }
.signal span:nth-child(4) { background: #2ec044; }
.signal span:nth-child(5) { background: #d842cb; }
.signal span:nth-child(6) { background: #df3d2d; }
.signal span:nth-child(7) { background: #2949ca; }

.band {
  padding: 88px 20px;
}

.band.alt {
  background: var(--surface);
}

.section-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 50px;
}

.section-heading h2 {
  margin-bottom: 14px;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.08;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 19px;
}

.steps,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}

.step {
  padding-top: 20px;
  border-top: 2px solid var(--ink);
}

.step-number {
  display: block;
  margin-bottom: 36px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.step h3,
.feature h3 {
  margin-bottom: 9px;
  font-size: 20px;
}

.step p,
.feature p {
  margin-bottom: 0;
  color: var(--muted);
}

.feature {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.feature-mark {
  width: 34px;
  height: 34px;
  margin-bottom: 28px;
  display: grid;
  place-items: center;
  border: 1px solid #bdbdb8;
  border-radius: 6px;
  color: var(--blue);
  font-size: 15px;
  font-weight: 800;
}

.spec-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.45fr) 1fr;
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.spec-row:last-child {
  border-bottom: 1px solid var(--line);
}

.spec-row strong {
  font-size: 15px;
}

.spec-row span {
  color: var(--muted);
}

.support-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.support-callout h2 {
  margin-bottom: 7px;
  font-size: clamp(32px, 4vw, 46px);
}

.support-callout p {
  margin-bottom: 0;
  color: var(--muted);
}

.button {
  flex: 0 0 auto;
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 7px;
  background: var(--blue);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  background: var(--blue-dark);
}

.page-main {
  min-height: calc(100svh - 162px);
  padding: 88px 20px 110px;
}

.article {
  width: min(100%, 760px);
  margin: 0 auto;
}

.article h1 {
  margin-bottom: 22px;
  font-size: clamp(44px, 7vw, 68px);
}

.article .lede {
  margin-bottom: 50px;
  color: #41413e;
  font-size: 22px;
}

.article h2 {
  margin: 46px 0 12px;
  font-size: 25px;
}

.article h3 {
  margin: 30px 0 8px;
  font-size: 19px;
}

.article p,
.article li {
  color: #4e4e4b;
}

.article ul,
.article ol {
  padding-left: 24px;
}

.article li + li {
  margin-top: 9px;
}

.contact-block {
  margin: 38px 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.contact-block p:last-child {
  margin-bottom: 0;
}

.contact-block a {
  color: var(--blue);
  font-weight: 700;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  padding: 32px 20px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 22px;
}

.footer-links a:hover {
  color: var(--ink);
}

@media (max-width: 760px) {
  .nav {
    width: min(calc(100% - 28px), var(--max));
  }

  .brand span {
    display: none;
  }

  .nav-links {
    gap: 18px;
    font-size: 14px;
  }

  .hero {
    min-height: auto;
    padding-top: 58px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 64px);
  }

  .hero-copy {
    font-size: 21px;
  }

  .band,
  .page-main {
    padding: 64px 20px;
  }

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

  .step-number {
    margin-bottom: 20px;
  }

  .spec-row {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .support-callout,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

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