:root {
  --paper: #f7faf3;
  --mist: #edf7ec;
  --ink: #101313;
  --muted: #647068;
  --line: rgba(16, 19, 19, 0.12);
  --green: #19ce66;
  --green-soft: #b7eac8;
  --shadow: 0 30px 90px rgba(18, 46, 29, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 76% 12%, rgba(25, 206, 102, 0.18), transparent 28rem),
    linear-gradient(180deg, var(--paper), #ffffff 58%, var(--mist));
  color: var(--ink);
  font-family: ui-rounded, "SF Pro Rounded", "Avenir Next", "Helvetica Neue", sans-serif;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 250, 243, 0.78);
  backdrop-filter: blur(18px);
}

.brand,
nav,
footer div {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 1.8rem;
  height: 1.8rem;
  border: 0.32rem solid var(--ink);
  border-right-color: var(--green);
  border-radius: 999px;
  display: inline-block;
}

nav a,
footer a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

main {
  overflow: hidden;
}

.hero {
  min-height: 62vh;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(300px, 0.78fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  padding: clamp(1.6rem, 4vw, 3.2rem) clamp(1rem, 6vw, 5rem) 1.4rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 12ch;
  margin-bottom: 1.1rem;
  font-size: clamp(2.6rem, 5.15vw, 4.45rem);
  line-height: 0.94;
  letter-spacing: 0;
}

.lede {
  max-width: 36rem;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.2rem;
  padding: 0 1.25rem;
  border-radius: 999px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 18px 36px rgba(16, 19, 19, 0.18);
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
}

.phone-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 28rem;
}

.phone-shell,
.phone-card {
  border: 0.72rem solid #0c0e0e;
  border-radius: 2.7rem;
  background: #0c0e0e;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.main-phone {
  width: min(68vw, 16.6rem);
  transform: rotate(2.5deg);
}

.phone-shell img,
.phone-card img {
  display: block;
  width: 100%;
  height: auto;
}

.floating-stat {
  position: absolute;
  right: 3%;
  bottom: 13%;
  display: grid;
  gap: 0.2rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(25, 206, 102, 0.28);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 54px rgba(25, 206, 102, 0.16);
  backdrop-filter: blur(16px);
}

.floating-stat span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
}

.floating-stat strong {
  color: var(--green);
  font-size: 2rem;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 clamp(1rem, 6vw, 5rem);
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: var(--line);
  overflow: hidden;
}

.principles article {
  padding: clamp(1.2rem, 3vw, 2rem);
  background: rgba(255, 255, 255, 0.66);
}

.dot {
  width: 0.75rem;
  height: 0.75rem;
  display: block;
  margin-bottom: 1.5rem;
  border-radius: 999px;
  background: var(--green);
}

.principles h2,
.review-block h2,
.section-copy h2,
.document h1 {
  margin-bottom: 0.7rem;
  font-size: clamp(1.9rem, 4vw, 3.6rem);
  line-height: 1;
  letter-spacing: 0;
}

.principles p,
.review-block p,
.document p {
  color: var(--muted);
  line-height: 1.65;
}

.screens {
  padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 6vw, 5rem);
}

.section-copy {
  max-width: 42rem;
  margin-bottom: 2rem;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(13rem, 1fr));
  gap: 1rem;
  align-items: start;
  overflow-x: auto;
  padding: 0.5rem 0 2rem;
}

.phone-card {
  min-width: 13rem;
  margin: 0;
  border-width: 0.46rem;
  border-radius: 1.8rem;
}

.phone-card figcaption {
  padding: 0.8rem 0.6rem 0.9rem;
  color: white;
  font-size: 0.86rem;
  font-weight: 800;
  text-align: center;
}

.review-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin: 0 clamp(1rem, 6vw, 5rem) clamp(4rem, 8vw, 7rem);
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid rgba(25, 206, 102, 0.24);
  border-radius: 1.2rem;
  background: linear-gradient(135deg, rgba(25, 206, 102, 0.12), rgba(255, 255, 255, 0.72));
}

.document {
  max-width: 54rem;
  padding: clamp(3rem, 7vw, 6rem) clamp(1rem, 6vw, 5rem);
}

.document section {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.document h2 {
  margin-bottom: 0.4rem;
}

.updated {
  color: var(--muted);
  font-weight: 700;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

footer p {
  margin: 0;
}

@media (max-width: 820px) {
  .site-header,
  footer,
  .review-block {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  h1 {
    max-width: 10ch;
  }

  .phone-stage {
    min-height: auto;
  }

  .principles,
  .review-block {
    grid-template-columns: 1fr;
  }

  .screen-grid {
    grid-template-columns: repeat(5, 72vw);
  }
}