:root {
  --bg: #03150f;
  --bg-deep: #000d09;
  --panel: #10221e;
  --panel-soft: #18312b;
  --text: #f5fffb;
  --muted: #a7c8be;
  --line: rgba(197, 255, 235, 0.16);
  --mint: #13d69d;
  --aqua: #83fff2;
  --cyan: #27bde8;
  --pink: #ff5b79;
  --shadow: rgba(19, 214, 157, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 10%, rgba(39, 189, 232, 0.2), transparent 28rem),
    radial-gradient(circle at 8% 34%, rgba(19, 214, 157, 0.18), transparent 28rem),
    linear-gradient(180deg, var(--bg), var(--bg-deep) 54%, #020807);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, black, transparent 78%);
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 76px);
  background: rgba(0, 13, 9, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
  letter-spacing: 0;
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 12px 30px var(--shadow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav-links a:hover {
  color: var(--aqua);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  align-items: center;
  gap: clamp(34px, 7vw, 92px);
  min-height: calc(100vh - 75px);
  padding: clamp(44px, 7vw, 92px) clamp(20px, 5vw, 76px) clamp(36px, 6vw, 70px);
  overflow: hidden;
}

.hero-copy {
  max-width: 690px;
}

.app-icon {
  width: 92px;
  height: 92px;
  margin-bottom: 26px;
  border-radius: 22px;
  object-fit: cover;
  box-shadow: 0 22px 48px var(--shadow);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--aqua);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(43px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4.4vw, 56px);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
}

.hero-text {
  max-width: 590px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 850;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, var(--mint), var(--aqua));
  color: #00140e;
  box-shadow: 0 18px 38px var(--shadow);
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.button.secondary:hover {
  border-color: rgba(131, 255, 242, 0.68);
}

.hero-gallery {
  position: relative;
  display: grid;
  min-height: min(760px, 76vh);
  place-items: center;
}

.hero-gallery::before {
  position: absolute;
  inset: 9% 12% 5%;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(19, 214, 157, 0.45), transparent 62%);
  filter: blur(28px);
}

.phone-shot {
  position: relative;
  width: min(43vw, 320px);
  min-width: 230px;
  border: 1px solid rgba(197, 255, 235, 0.25);
  border-radius: 28px;
  object-fit: cover;
  box-shadow: 0 42px 95px rgba(0, 0, 0, 0.55);
}

.main-shot {
  transform: translateX(-13%) rotate(-3deg);
}

.side-shot {
  position: absolute;
  right: 0;
  bottom: 1%;
  width: min(34vw, 255px);
  min-width: 190px;
  transform: rotate(6deg);
}

.intro,
.features,
.showcase,
.download {
  padding: clamp(54px, 8vw, 100px) clamp(20px, 5vw, 76px);
}

.intro {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 30, 24, 0.72);
}

.intro p {
  max-width: 1080px;
  margin: 0;
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1.18;
  font-weight: 850;
}

.section-heading {
  max-width: 790px;
  margin-bottom: 34px;
}

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

.feature-card {
  min-height: 255px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent),
    linear-gradient(145deg, var(--panel-soft), var(--panel));
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 50px;
  color: var(--aqua);
  font-size: 14px;
  font-weight: 850;
}

.feature-card p,
.download p,
figcaption {
  color: var(--muted);
}

.showcase {
  background: rgba(0, 9, 7, 0.48);
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

figure {
  margin: 0;
}

figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 28px 58px rgba(0, 0, 0, 0.32);
}

figcaption {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 750;
}

.download {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(255, 91, 121, 0.12), transparent 30%),
    linear-gradient(145deg, rgba(19, 214, 157, 0.18), rgba(0, 13, 9, 0.82));
}

.download div {
  max-width: 780px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 5vw, 76px);
  color: var(--muted);
  font-size: 14px;
}

.site-footer a {
  color: var(--aqua);
}

@media (max-width: 1080px) {
  .screen-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .hero,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-gallery {
    min-height: 660px;
  }

  .phone-shot {
    width: min(58vw, 320px);
  }

  .side-shot {
    right: 8%;
    width: min(44vw, 250px);
  }

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

@media (max-width: 640px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    padding-top: 40px;
  }

  .app-icon {
    width: 76px;
    height: 76px;
  }

  .button {
    width: 100%;
  }

  .hero-gallery {
    min-height: 560px;
  }

  .main-shot {
    transform: translateX(-8%) rotate(-3deg);
  }

  .side-shot {
    right: 1%;
    bottom: 6%;
  }

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

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

  .feature-icon {
    margin-bottom: 34px;
  }

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

@media (max-width: 430px) {
  .phone-shot {
    min-width: 205px;
  }

  .side-shot {
    min-width: 168px;
  }

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