:root {
  --teal: #5DBDB1;
  --teal-deep: #3FA396;
  --teal-soft: #E8F4F1;
  --cream: #F7F2E8;
  --ink: #1B2A2A;
  --muted: #5B6F6F;
  --white: #ffffff;
  --radius: 28px;
  --shadow-phone: 0 40px 80px rgba(27, 42, 42, 0.22), 0 12px 28px rgba(27, 42, 42, 0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.04;
}

.accent { font-style: italic; color: var(--teal-deep); }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--ink);
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  padding: 15px 26px;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 10px 24px rgba(27, 42, 42, 0.18);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(27, 42, 42, 0.24); }
.btn svg { width: 20px; height: 20px; }
.btn--small { padding: 10px 20px; font-size: 0.92rem; box-shadow: none; }
.btn--invert { background: var(--white); color: var(--ink); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(20px, 5vw, 64px);
  background: rgba(247, 242, 232, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(27, 42, 42, 0.06);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Fraunces', serif;
  font-weight: 700;
  font-size: 1.5rem;
}
.nav__brand img { width: 36px; height: 36px; border-radius: 9px; }

/* ---------- Phone frame ---------- */
.phone {
  position: relative;
  width: 300px;
  max-width: 78vw;
  border-radius: 46px;
  padding: 12px;
  background: linear-gradient(160deg, #2c3a3a, #0f1717);
  box-shadow: var(--shadow-phone);
}
.phone img { width: 100%; display: block; border-radius: 34px; }
.phone--sm { width: 270px; }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(24px, 5vw, 72px);
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(48px, 8vw, 110px) clamp(20px, 5vw, 64px) clamp(60px, 9vw, 120px);
  background:
    radial-gradient(120% 120% at 85% 0%, rgba(93, 189, 177, 0.30), transparent 55%);
}
.hero__copy h1 { font-size: clamp(2.8rem, 6.5vw, 5rem); }
.lead {
  margin-top: 24px;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--muted);
  max-width: 30ch;
}
.cta { margin-top: 36px; display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.cta__note { font-size: 0.9rem; color: var(--muted); }
.hero__device { display: flex; justify-content: center; }

/* ---------- Features ---------- */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(24px, 6vw, 80px);
  max-width: 1080px;
  margin: 0 auto;
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 64px);
}
.feature__media { display: flex; justify-content: center; }
.feature--reverse .feature__media { order: 2; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--teal-deep);
  margin-bottom: 14px;
}
.feature__copy h2 { font-size: clamp(1.9rem, 3.8vw, 2.9rem); }
.feature__copy p {
  margin-top: 18px;
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  color: var(--muted);
  max-width: 38ch;
}

/* ---------- Promise ---------- */
.promise {
  padding: clamp(56px, 8vw, 104px) clamp(20px, 5vw, 64px);
}
.promise__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: var(--teal-soft);
  border: 1px solid rgba(63, 163, 150, 0.18);
  border-radius: var(--radius);
  padding: clamp(40px, 6vw, 64px) clamp(28px, 5vw, 56px);
}
.promise__inner h2 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); margin-top: 14px; }
.promise__inner p {
  margin-top: 20px;
  font-size: clamp(1.02rem, 1.7vw, 1.2rem);
  color: var(--muted);
  max-width: 48ch;
  margin-left: auto;
  margin-right: auto;
}
.promise__inner strong { color: var(--ink); font-weight: 600; }

/* ---------- Closing ---------- */
.closing {
  text-align: center;
  padding: clamp(64px, 10vw, 130px) clamp(20px, 5vw, 64px);
  background: linear-gradient(165deg, var(--teal) 0%, var(--teal-deep) 100%);
  color: var(--white);
  margin-top: 40px;
}
.closing__icon { width: 72px; height: 72px; border-radius: 18px; box-shadow: 0 12px 30px rgba(0,0,0,0.2); }
.closing h2 { font-size: clamp(1.9rem, 4.5vw, 3.2rem); margin: 26px auto 34px; max-width: 18ch; }

/* ---------- Footer ---------- */
.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 36px clamp(20px, 5vw, 64px);
}
.footer__brand { font-family: 'Fraunces', serif; font-weight: 700; font-size: 1.25rem; }
.footer__links { display: flex; gap: 24px; }
.footer__links a { color: var(--muted); font-size: 0.95rem; }
.footer__links a:hover { color: var(--ink); }
.footer__copy { color: var(--muted); font-size: 0.9rem; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 56px; }
  .hero__copy h1 { margin: 0 auto; }
  .lead { margin-left: auto; margin-right: auto; }
  .cta { align-items: center; }
  .hero__device { order: -1; margin-bottom: 12px; }

  .feature { grid-template-columns: 1fr; text-align: center; gap: 36px; }
  .feature--reverse .feature__media { order: -1; }
  .feature__media { order: -1; }
  .feature__copy p { margin-left: auto; margin-right: auto; }
}