:root {
  /* Design tokens (provided) */
  --surface: #F7FBFA;
  --primary: #1E9E8E;
  --secondary: #2AAE9D;
  --amber: #F2B84A;
  --htext: #10201D;
  --btext: #2A3C38;

  /* UI tokens */
  --max: 1120px;
  --radius-12: 12px;
  --radius-16: 16px;
  --radius-20: 20px;
  --stroke: rgba(16, 32, 29, 0.10);
  --shadow: 0 18px 60px rgba(16, 32, 29, 0.10);

  /* 8px baseline grid */
  --s1: 8px;
  --s2: 16px;
  --s3: 24px;
  --s4: 32px;
  --s5: 40px;
  --s6: 48px;
  --s7: 56px;
  --s8: 64px;

  --sans: ui-sans-serif, system-ui, -apple-system, "SF Pro Display", "SF Pro Text",
           "Inter", "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--btext);
  background: var(--surface);
}

/* Soft gradient + subtle noise (no external image) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 640px at 10% 0%, rgba(42, 174, 157, 0.14), rgba(247, 251, 250, 0)),
    radial-gradient(760px 520px at 90% 10%, rgba(242, 184, 74, 0.12), rgba(247, 251, 250, 0)),
    linear-gradient(180deg, rgba(247, 251, 250, 1), rgba(247, 251, 250, 1));
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.055;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}

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

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--s3);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 251, 250, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--stroke);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.2px;
  white-space: nowrap;
  color: var(--htext);
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: block;
  border-radius: 10px;
  object-fit: contain;
}

.navlinks {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.navlinks a {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: rgba(42, 60, 56, 0.82);
  font-weight: 650;
  letter-spacing: 0.1px;
}

.navlinks a:hover {
  text-decoration: none;
  border-color: var(--stroke);
  background: rgba(255, 255, 255, 0.55);
}

.navlinks a[aria-current="page"] {
  border-color: rgba(30, 158, 142, 0.25);
  background: rgba(30, 158, 142, 0.08);
  color: var(--htext);
}

/* Typography */
h1, h2, h3 {
  color: var(--htext);
  letter-spacing: -0.015em;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1.04;
}

h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.2;
}

p {
  margin: 0;
  line-height: 1.7;
  color: rgba(42, 60, 56, 0.92);
}

.lede {
  margin-top: var(--s2);
  font-size: 17px;
  max-width: 70ch;
}

.muted { color: rgba(42, 60, 56, 0.74); }
.small { font-size: 13px; color: rgba(42, 60, 56, 0.70); }

.section {
  margin-top: var(--s6);
}

/* Avoid double-padding when a section nests a .container (used by "Why ... feels different") */
.section > .container {
  padding: 0;
}

/* Glass cards (light) */
.card {
  border-radius: var(--radius-16);
  border: 1px solid rgba(16, 32, 29, 0.10);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.card-pad { padding: var(--s3); }

/* Buttons */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin-top: var(--s3);
}

/* Center hero content at all breakpoints (spec: screenshot below text) */
.hero-wrap > div:first-child {
  text-align: center;
}

.hero-wrap .lede {
  margin-left: auto;
  margin-right: auto;
}

.hero-wrap .cta-row {
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  letter-spacing: 0.1px;
  cursor: pointer;
  user-select: none;
  box-shadow: 0 10px 26px rgba(16, 32, 29, 0.10);
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #ffffff;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.65);
  border-color: rgba(30, 158, 142, 0.35);
  color: var(--htext);
}

.btn-outline:hover {
  text-decoration: none;
  border-color: rgba(30, 158, 142, 0.55);
  background: rgba(30, 158, 142, 0.08);
}

.btn:focus-visible,
.navlinks a:focus-visible,
details summary:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(30, 158, 142, 0.35);
  outline-offset: 2px;
  border-radius: 12px;
}

/* Hero */
.hero {
  padding-top: var(--s6);
  padding-bottom: var(--s4);
}

.hero-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s4);
  align-items: start;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.58);
  color: rgba(42, 60, 56, 0.78);
  font-size: 13px;
}

.hero-kicker code {
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(16, 32, 29, 0.88);
}

.hero-chips {
  list-style: none;
  padding: 0;
  margin: var(--s3) 0 0 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.hero-chips li {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(16, 32, 29, 0.10);
  background: rgba(255, 255, 255, 0.62);
  color: rgba(42, 60, 56, 0.84);
  font-weight: 750;
  font-size: 13px;
  line-height: 1;
  box-shadow: 0 12px 40px rgba(16, 32, 29, 0.08);
}

.hero-chips li:nth-child(4) {
  border-color: rgba(242, 184, 74, 0.45);
  background: rgba(242, 184, 74, 0.14);
}

.device-mock {
  margin-top: var(--s3);
  width: min(420px, 100%);
  justify-self: center;
}

.device-frame {
  border-radius: 28px;
  border: 1px solid rgba(16, 32, 29, 0.12);
  background: rgba(255, 255, 255, 0.66);
  box-shadow: 0 22px 70px rgba(16, 32, 29, 0.14);
  overflow: hidden;
  aspect-ratio: 9 / 19.5;
}

.device-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Feature grid */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s2);
  margin-top: var(--s3);
}

.feature {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: var(--s2);
  align-items: start;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(16, 32, 29, 0.10);
  background: rgba(30, 158, 142, 0.08);
  color: var(--primary);
}

.feature-icon.amber {
  background: rgba(242, 184, 74, 0.14);
  color: #b07500;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature h3 {
  margin: 0;
  font-size: 16px;
}

.feature p {
  margin-top: 6px;
  color: rgba(42, 60, 56, 0.78);
  line-height: 1.55;
}

/* How it works */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s2);
  margin-top: var(--s3);
}

.step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: var(--s2);
  align-items: start;
}

.step-num {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-weight: 900;
  color: #ffffff;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  box-shadow: 0 10px 24px rgba(30, 158, 142, 0.20);
}

.step h3 { margin: 0; font-size: 16px; }
.step p { margin-top: 6px; color: rgba(42, 60, 56, 0.78); line-height: 1.55; }

/* Trust strip */
.trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: var(--s3);
}

.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(16, 32, 29, 0.10);
  background: rgba(255, 255, 255, 0.62);
  color: rgba(42, 60, 56, 0.82);
  font-weight: 650;
  font-size: 13px;
}

.trust-pill svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
}

/* Carousel */
.carousel {
  margin-top: var(--s3);
  position: relative;
}

.carousel-viewport {
  display: flex;
  gap: var(--s2);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 2px;
  -webkit-overflow-scrolling: touch;
}

.carousel-viewport:focus { outline: none; }

.carousel-slide {
  scroll-snap-align: start;
  flex: 0 0 82%;
  max-width: 420px;
}

.carousel-slide .device-frame { aspect-ratio: 9 / 19.5; }

.carousel-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--s2);
  gap: var(--s2);
}

.carousel-btn {
  border: 1px solid rgba(16, 32, 29, 0.10);
  background: rgba(255, 255, 255, 0.70);
  border-radius: 999px;
  padding: 10px 12px;
  font-weight: 800;
  cursor: pointer;
  color: var(--htext);
}

.carousel-btn:hover { background: rgba(30, 158, 142, 0.08); }

.dots {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(42, 60, 56, 0.22);
}

.dot[aria-current="true"] {
  width: 20px;
  background: rgba(30, 158, 142, 0.70);
}

/* FAQ */
.faq {
  margin-top: var(--s3);
  display: grid;
  gap: var(--s2);
}

details {
  border-radius: var(--radius-16);
  border: 1px solid rgba(16, 32, 29, 0.10);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 14px 44px rgba(16, 32, 29, 0.08);
  padding: var(--s2);
}

summary {
  cursor: pointer;
  font-weight: 850;
  color: var(--htext);
}

details p { margin-top: 10px; color: rgba(42, 60, 56, 0.84); }

/* Forms */
.form {
  display: grid;
  gap: var(--s2);
  margin-top: var(--s3);
}

.field { display: grid; gap: 6px; }
label { font-size: 13px; color: rgba(42, 60, 56, 0.72); font-weight: 650; }

input, textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: var(--radius-12);
  border: 1px solid rgba(16, 32, 29, 0.12);
  background: rgba(255, 255, 255, 0.72);
  color: var(--htext);
  font-family: var(--sans);
}

textarea { min-height: 140px; resize: vertical; }

/* Footer */
.footer {
  margin-top: var(--s7);
  padding: var(--s4) 0 var(--s7) 0;
  border-top: 1px solid var(--stroke);
  color: rgba(42, 60, 56, 0.74);
  font-size: 13px;
}

.footer a { color: rgba(42, 60, 56, 0.86); font-weight: 650; }

/* Breakpoints */
@media (min-width: 760px) {
  .container { padding: var(--s4); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step { grid-template-columns: 42px 1fr; }
  .carousel-slide { flex-basis: 44%; }
}

@media (min-width: 1020px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .carousel-slide { flex-basis: 32%; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .carousel-viewport { scroll-behavior: auto; }
  body::after { display: none; }
}