:root {
  --bg: #0e1117;
  --bg-alt: #151a23;
  --card: #1b212c;
  --line: #2a3140;
  --text: #e6e9ef;
  --muted: #9aa4b6;
  --accent: #4f8cff;
  --accent-2: #35d07f;
  --radius: 14px;
  --wrap: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

/* header */
.top {
  border-bottom: 1px solid var(--line);
  background: rgba(14, 17, 23, .9);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}
.top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text);
  text-decoration: none;
}
.logo span { color: var(--accent); }
.badge {
  font-size: 13px;
  color: var(--accent-2);
  border: 1px solid rgba(53, 208, 127, .35);
  background: rgba(53, 208, 127, .08);
  border-radius: 999px;
  padding: 4px 12px;
}

/* hero */
.hero {
  padding: 84px 0 72px;
  background:
    radial-gradient(900px 400px at 50% -10%, rgba(79, 140, 255, .16), transparent 70%);
}
.hero h1 {
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.12;
  letter-spacing: -.025em;
  margin: 0 0 22px;
  max-width: 17ch;
}
.lead {
  font-size: clamp(17px, 2.2vw, 20px);
  color: var(--muted);
  max-width: 62ch;
  margin: 0 0 32px;
}

/* buttons */
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  transition: transform .12s ease, background .15s ease, border-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: #6a9dff; }
.btn--ghost { border: 1px solid var(--line); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); }

/* sections */
.section { padding: 72px 0; border-top: 1px solid var(--line); }
.section--alt { background: var(--bg-alt); }
.section h2 {
  font-size: clamp(24px, 3.4vw, 33px);
  letter-spacing: -.02em;
  margin: 0 0 34px;
}
.note { color: var(--muted); margin: -22px 0 30px; font-size: 15px; }

/* cards */
.cols {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.cols--2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.cols--3 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.card h3 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.35;
}
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }
.card p + p { margin-top: 12px; }
.card strong { color: var(--text); }

.tag {
  display: inline-block;
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
  vertical-align: middle;
  margin-left: 6px;
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(154, 164, 182, .12);
}
.tag--free { color: var(--accent-2); background: rgba(53, 208, 127, .12); }

/* steps */
.steps {
  list-style: none;
  counter-reset: s;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.steps li {
  counter-increment: s;
  position: relative;
  padding-left: 56px;
  min-height: 40px;
}
.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(79, 140, 255, .14);
  border: 1px solid rgba(79, 140, 255, .4);
  color: var(--accent);
  font-weight: 700;
  display: grid;
  place-items: center;
}
.steps strong { display: block; margin-bottom: 4px; font-size: 17px; }
.steps span { color: var(--muted); font-size: 15.5px; }

/* price */
.card--price ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 15.5px;
}
.card--price li {
  padding: 7px 0 7px 22px;
  position: relative;
  border-top: 1px solid var(--line);
}
.card--price li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}
.price {
  font-size: 27px;
  font-weight: 700;
  color: var(--text) !important;
  margin: 0;
}
.price span { font-size: 15px; font-weight: 400; color: var(--muted); }
.fine { margin-top: 16px !important; font-size: 13.5px !important; opacity: .8; }

/* faq */
.faq { display: grid; gap: 12px; }
details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 22px;
}
details[open] { border-color: rgba(79, 140, 255, .4); }
summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16.5px;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-weight: 400;
  font-size: 20px;
  line-height: 1;
}
details[open] summary::after { content: "−"; }
details p { color: var(--muted); margin: 14px 0 0; font-size: 15.5px; }

/* cta section */
.section--cta { text-align: center; }
.section--cta .lead { margin: 0 auto 28px; }

/* footer */
.foot {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  color: var(--muted);
  font-size: 14px;
}
.foot__inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 640px) {
  .hero { padding: 56px 0 48px; }
  .section { padding: 52px 0; }
  .btn { width: 100%; text-align: center; }
}