:root {
  color-scheme: light;
  --ground: #f6f9fe;
  --tint: #edf3fc;
  --card: #ffffff;
  --ink: #0f1f4a;
  --ink-2: #4a5a78;
  --line: rgba(15, 31, 74, 0.1);
  --blue: #1f6fef;
  --grad: linear-gradient(90deg, #1f6fef 0%, #22c3e6 100%);
  --brand: 'Geologica', 'Segoe UI', system-ui, sans-serif;
  --text: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink-2);
  font: 400 17px/1.55 var(--text);
}

h1, h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--brand);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  text-wrap: balance;
}

h1 { font-size: clamp(36px, 5.2vw, 60px); }
h2 { font-size: clamp(28px, 3.6vw, 42px); }

a { color: inherit; }

b { color: var(--ink); font-weight: 600; }

.wrap {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 20px;
}

.btn {
  display: inline-block;
  padding: 16px 28px;
  border-radius: 14px;
  background: var(--grad);
  box-shadow: 0 12px 28px rgba(31, 111, 239, 0.3);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.btn--small { padding: 10px 18px; box-shadow: none; font-size: 15px; }
.btn--light { background: #fff; box-shadow: none; color: var(--blue); }

.btn:focus-visible, .link:focus-visible, .brand:focus-visible, .foot a:focus-visible {
  outline: 3px solid #22c3e6;
  outline-offset: 3px;
}

.link { color: var(--blue); font-weight: 500; }

.top {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 249, 254, 0.92);
}

.top__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.brand span {
  color: var(--blue);
  font: 600 18px/1 var(--brand);
}

.hero { padding-block: clamp(48px, 8vw, 104px); }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(32px, 6vw, 80px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue);
  font-weight: 600;
}

.lead { margin: 22px 0 30px; font-size: 19px; max-width: 34em; }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
}

.channels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.channels li {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-size: 14px;
}

.chat {
  padding: 18px;
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 18px 50px rgba(31, 90, 180, 0.13);
}

.chat__head {
  display: flex;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.chat__head span { color: #14936f; font-size: 14px; font-weight: 500; }

.msg {
  width: fit-content;
  max-width: 88%;
  margin: 12px 0 0;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 15px;
  line-height: 1.4;
}

.msg--in { background: var(--tint); color: var(--ink); border-bottom-left-radius: 4px; }
.msg--out { margin-left: auto; background: var(--blue); color: #fff; border-bottom-right-radius: 4px; }

.chat__note { margin: 16px 0 0; font-size: 13px; text-align: center; }

.section { padding-block: clamp(56px, 8vw, 96px); }
.section--tint { background: var(--tint); }
.section--ink { background: var(--ink); color: #c5d0e6; }
.section--ink h2, .section--ink b { color: #fff; }

.section__lead { margin: 14px 0 0; font-size: 18px; max-width: 36em; }

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li { padding-top: 16px; border-top: 3px solid var(--blue); counter-increment: step; }

.steps li::before {
  content: counter(step);
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font: 800 26px/1 var(--brand);
}

.steps b, .cards b, .result b { display: block; margin-bottom: 6px; font-size: 18px; }
.steps span, .cards span, .result span { font-size: 16px; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 6vw, 72px);
}

.ticks { margin: 0; padding: 0; list-style: none; }

.ticks li {
  position: relative;
  padding: 13px 0 13px 32px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.ticks li:last-child { border-bottom: 0; }

.ticks li::before {
  content: '';
  position: absolute;
  top: 19px;
  left: 3px;
  width: 15px;
  height: 8px;
  border-bottom: 2.5px solid var(--blue);
  border-left: 2.5px solid var(--blue);
  transform: rotate(-45deg);
}

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

.result div {
  padding: 18px 22px;
  border-radius: 16px;
  background: var(--card);
  box-shadow: 0 8px 26px rgba(31, 90, 180, 0.08);
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin-top: 44px;
}

.pay { margin: 38px 0 0; border-top: 1px solid var(--line); }

.pay div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 8px 32px;
  padding-block: 20px;
  border-bottom: 1px solid var(--line);
}

.pay dt { color: var(--ink); font-weight: 600; }
.pay dd { margin: 0; }

.pay em {
  margin-left: 6px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--tint);
  color: var(--blue);
  font-size: 13px;
  font-style: normal;
}

.final { padding-bottom: clamp(56px, 8vw, 96px); }

.final__box {
  padding-block: clamp(44px, 7vw, 76px);
  border-radius: 28px;
  background: var(--grad);
  background-clip: padding-box;
  color: #fff;
  text-align: center;
}

.final h2 { max-width: 20em; margin: 0 auto 26px; padding-inline: 20px; color: #fff; }
.final p { margin: 18px 0 0; }

.foot { padding-block: 26px; border-top: 1px solid var(--line); font-size: 15px; }

.foot__row { display: flex; justify-content: space-between; gap: 16px; }

@media (max-width: 860px) {
  .hero__grid, .split { grid-template-columns: minmax(0, 1fr); }
  .steps, .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .steps, .cards { grid-template-columns: minmax(0, 1fr); }
  .pay div { grid-template-columns: minmax(0, 1fr); }
  .btn { white-space: normal; text-align: center; }
  .final__box { border-radius: 20px; margin-inline: 16px; width: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}