:root {
  --ink: #1d2427;
  --muted: #64717a;
  --line: #d9e3ea;
  --paper: #f7fbff;
  --panel: #ffffff;
  --accent: #3ba7ff;
  --accent-soft: #e7f5ff;
  --blue: #4f7dff;
  --coral: #3ba7ff;
  --gold: #5f8cff;
  --shadow: 0 20px 60px rgba(31, 39, 41, 0.15);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: rgba(247, 251, 255, 0.86);
  border-bottom: 1px solid rgba(29, 36, 39, 0.1);
  backdrop-filter: blur(16px);
}

.brand,
.store-button,
.nav-list,
.hero-actions,
.seo-strip {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(31, 39, 41, 0.15);
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
}

.nav-list {
  justify-content: center;
  gap: 8px;
}

.nav-list a {
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 800;
  text-decoration: none;
}

.nav-list a:hover {
  color: var(--ink);
  background: var(--accent-soft);
}

.store-button {
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 17px;
  border-radius: 8px;
  color: white;
  background: var(--ink);
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

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

.store-button svg {
  width: 19px;
  height: 19px;
}

.compact {
  min-height: 40px;
  padding: 0 13px;
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 92vh;
  overflow: hidden;
  padding: 120px clamp(20px, 5vw, 72px) 72px;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(15, 20, 21, 0.82), rgba(15, 20, 21, 0.42) 48%, rgba(15, 20, 21, 0.1)),
    linear-gradient(0deg, rgba(15, 20, 21, 0.7), rgba(15, 20, 21, 0) 42%);
}

.hero-content {
  position: relative;
  max-width: 820px;
  color: white;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #9edcff;
}

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

h1 {
  margin-bottom: 16px;
  font-size: clamp(3.4rem, 10vw, 8.4rem);
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 26px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.45;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
}

.text-link {
  color: white;
  font-weight: 900;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.seo-strip {
  position: relative;
  z-index: 2;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  padding: 20px clamp(18px, 4vw, 54px);
  background: #eff8ff;
  border-bottom: 1px solid var(--line);
}

.seo-strip span {
  padding: 8px 12px;
  border-radius: 999px;
  color: #286699;
  background: white;
  font-weight: 900;
}

.section {
  padding: clamp(56px, 8vw, 108px) clamp(20px, 5vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
  background: #ffffff;
}

.intro p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.72;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  background: #f1f8ff;
}

.feature-card {
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 36px rgba(36, 43, 43, 0.08);
}

.feature-card svg {
  width: 30px;
  height: 30px;
  margin-bottom: 28px;
  color: var(--coral);
}

.feature-card p,
.use-case-grid p,
.faq p,
.steps li {
  color: var(--muted);
  line-height: 1.62;
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(320px, 1fr);
  gap: clamp(32px, 6vw, 82px);
  align-items: center;
  background: #ffffff;
}

.phone-panel {
  display: grid;
  place-items: center;
}

.phone {
  position: relative;
  width: min(100%, 360px);
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 34px;
  background: #202729;
  box-shadow: var(--shadow);
}

.phone img {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 24px;
  object-fit: cover;
}

.score-badge {
  position: absolute;
  left: 30px;
  right: 30px;
  bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 8px;
  color: white;
  background: rgba(21, 26, 27, 0.78);
  backdrop-filter: blur(10px);
}

.score-badge span {
  color: rgba(255, 255, 255, 0.74);
}

.steps h2 {
  margin-bottom: 28px;
}

.steps ol {
  display: grid;
  gap: 18px;
  margin: 0 0 28px;
  padding-left: 22px;
}

.steps li strong {
  display: block;
  color: var(--ink);
  font-size: 1.05rem;
}

.section-heading {
  max-width: 880px;
  margin-bottom: 30px;
}

.use-cases {
  background: #eef7ff;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.use-case-grid article {
  min-height: 220px;
  padding: 22px;
  border-radius: 8px;
  background: white;
  border: 1px solid var(--line);
}

.use-case-grid span {
  display: block;
  margin-bottom: 36px;
  color: var(--gold);
  font-weight: 900;
}

.faq {
  background: #ffffff;
}

details {
  border-top: 1px solid var(--line);
  padding: 20px 0;
}

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

summary {
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 900;
}

details p {
  max-width: 840px;
  margin: 14px 0 0;
}

.final-cta {
  display: grid;
  justify-items: center;
  gap: 22px;
  padding: clamp(64px, 9vw, 120px) 20px;
  color: white;
  text-align: center;
  background: var(--ink);
}

.final-cta .eyebrow {
  color: #9edcff;
}

.final-cta h2 {
  max-width: 900px;
}

.final-cta .store-button {
  background: white;
  color: var(--ink);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 5vw, 72px);
  background: #151a1b;
  color: rgba(255, 255, 255, 0.78);
}

.site-footer a {
  font-weight: 900;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-list {
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .intro,
  .split,
  .feature-grid,
  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .use-case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 12px;
    padding: 10px 14px;
  }

  .brand small,
  .compact svg {
    display: none;
  }

  .compact {
    min-height: 38px;
    padding: 0 11px;
    font-size: 0.86rem;
  }

  .nav-list a {
    padding: 9px 10px;
    font-size: 0.9rem;
  }

  .hero {
    min-height: 88vh;
    padding: 150px 20px 52px;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .store-button {
    width: 100%;
  }

  .text-link {
    width: 100%;
    text-align: center;
  }

  .section {
    padding: 52px 20px;
  }

  .feature-card,
  .use-case-grid article {
    min-height: auto;
  }

  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .score-badge {
    left: 24px;
    right: 24px;
    bottom: 26px;
    flex-direction: column;
    align-items: flex-start;
  }

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