:root {
  --accent: #2ed3b7;
  --bg: #f6fffd;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --card-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.bg-accent {
  position: fixed;
  inset: -20% auto auto 50%;
  width: min(60vw, 720px);
  height: min(40vw, 420px);
  background: radial-gradient(circle at center, rgba(46, 211, 183, 0.18), rgba(46, 211, 183, 0));
  transform: translateX(-50%);
  z-index: -1;
  pointer-events: none;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  border-radius: 15px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: all 0.2s ease;
}

.tg-icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.header-cta {
  height: 44px;
  padding: 0 16px;
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}

.hero {
  text-align: center;
  padding: 52px 0 28px;
}

.eyebrow {
  color: #0b8f79;
  font-weight: 600;
  margin: 0 0 12px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.4rem, 7.2vw, 3.5rem);
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 18px auto 0;
  font-size: clamp(1rem, 2.3vw, 1.15rem);
  color: var(--muted);
  max-width: 640px;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn {
  min-height: 52px;
  padding: 0 22px;
}

.btn-primary {
  background: var(--accent);
  color: #062b24;
}

.btn-primary:hover,
.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: #fff;
}

.section {
  padding: 48px 0;
}

.section h2 {
  font-size: clamp(1.6rem, 3.6vw, 2rem);
  margin-bottom: 18px;
}

.grid {
  display: grid;
  gap: 16px;
}

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

.card,
.step,
.accordion-item,
.privacy {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
}

.card {
  padding: 20px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.1);
}

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

.step {
  padding: 20px;
}

.step span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #dcfaf4;
  color: #0f766e;
  font-weight: 700;
  margin-bottom: 10px;
}

.step h3 {
  font-size: 1.1rem;
}

.accordion {
  display: grid;
  gap: 12px;
}

.accordion-item {
  overflow: clip;
}

.accordion-trigger {
  width: 100%;
  border: 0;
  background: #fff;
  color: var(--text);
  text-align: left;
  padding: 18px 20px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-trigger::after {
  content: "+";
  font-size: 1.2rem;
  color: #0f766e;
}

.accordion-trigger[aria-expanded="true"]::after {
  content: "−";
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  transition: max-height 0.28s ease, padding-bottom 0.28s ease;
}

.accordion-panel p {
  margin: 0;
  color: var(--muted);
}

.accordion-item.open .accordion-panel {
  max-height: 220px;
  padding-bottom: 18px;
}

.privacy {
  padding: 24px;
}

.privacy p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  padding: 24px 0 42px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

a {
  color: #0f766e;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #99f6e4;
  outline-offset: 2px;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 740px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}