:root {
  --top: 56px;
  --unit: 8px;
  --ground: #070b14;
  --panel: #0c1220;
  --raised: #111a2e;
  --line: #ffffff15;
  --line-strong: #ffffff28;
  --ink: #f5f7ff;
  --muted: #8b95a9;
  --accent: #3ad8ff;
  --accent-dim: #3ad8ff26;
  --ambient: #7657ff;
  --ok: #55d6a8;
  --warn: #ffb45c;
  --danger: #ff7188;
  --radius: 10px;
  --radius-lg: 14px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family:
    'Segoe UI Variable Text',
    'Segoe UI',
    system-ui,
    -apple-system,
    'Helvetica Neue',
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

/* top bar */
.bar {
  position: sticky;
  top: 0;
  z-index: 5;
  height: var(--top);
  border-bottom: 1px solid var(--line);
  background: #070b14e6;
  backdrop-filter: blur(12px);
}
.bar .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: calc(var(--unit) * 3);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--unit);
  color: var(--ink);
  font-weight: 650;
  letter-spacing: 0.01em;
}
.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}
.brand:hover {
  text-decoration: none;
}
.bar nav {
  margin-left: auto;
  display: flex;
  gap: calc(var(--unit) * 3);
  align-items: center;
}
.bar nav a {
  color: var(--muted);
  font-size: 15px;
}
.bar nav a:hover {
  color: var(--ink);
  text-decoration: none;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--unit);
  height: 44px;
  padding: 0 calc(var(--unit) * 2.5);
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: var(--raised);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 120ms cubic-bezier(0.2, 0, 0, 1);
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #070b14;
}
.btn--small {
  height: 36px;
  font-size: 14px;
}

/* hero */
.hero {
  position: relative;
  padding: calc(var(--unit) * 12) 0 calc(var(--unit) * 10);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -40% -10% auto;
  height: 120%;
  background:
    radial-gradient(40% 50% at 30% 40%, #7657ff2e, transparent 70%),
    radial-gradient(35% 45% at 75% 30%, #3ad8ff1f, transparent 70%);
  pointer-events: none;
}
.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: calc(var(--unit) * 6);
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: calc(var(--unit) * 2);
}
h1 {
  font-size: clamp(36px, 5.4vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 calc(var(--unit) * 2.5);
}
.lead {
  font-size: 19px;
  color: #c9d1e3;
  max-width: 36em;
  margin: 0 0 calc(var(--unit) * 4);
}
.cta {
  display: flex;
  gap: calc(var(--unit) * 1.5);
  flex-wrap: wrap;
  align-items: center;
}
.cta small {
  color: var(--muted);
  font-size: 14px;
}
.hero__art {
  justify-self: center;
  width: min(320px, 70vw);
  aspect-ratio: 1;
  border-radius: 28%;
  box-shadow:
    0 30px 80px #0000008c,
    0 0 0 1px var(--line);
}

/* sections */
section.block {
  padding: calc(var(--unit) * 10) 0;
  border-top: 1px solid var(--line);
}
h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0 0 calc(var(--unit) * 1.5);
}
.sub {
  color: var(--muted);
  margin: 0 0 calc(var(--unit) * 5);
  max-width: 42em;
}
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--unit) * 2);
}
.feature {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: calc(var(--unit) * 3);
}
.feature h3 {
  margin: 0 0 var(--unit);
  font-size: 18px;
}
.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}
.feature .tag {
  display: inline-block;
  margin-bottom: calc(var(--unit) * 1.5);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
  background: var(--accent-dim);
  color: var(--accent);
}
.feature .tag--ai {
  background: #7657ff2e;
  color: #b5a6ff;
}

/* plans */
.toggle {
  display: inline-flex;
  padding: 4px;
  border-radius: 99px;
  background: var(--panel);
  border: 1px solid var(--line);
  margin-bottom: calc(var(--unit) * 4);
}
.toggle button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 99px;
  cursor: pointer;
}
.toggle button[aria-checked='true'] {
  background: var(--raised);
  color: var(--ink);
  box-shadow: 0 0 0 1px var(--line-strong);
}
.toggle .save {
  color: var(--ok);
  font-weight: 600;
}
.plans {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: calc(var(--unit) * 2);
  align-items: stretch;
}
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: calc(var(--unit) * 3);
}
.plan--featured {
  border-color: var(--accent);
  box-shadow:
    0 0 0 1px var(--accent),
    0 24px 60px #3ad8ff14;
}
.plan__flag {
  position: absolute;
  top: -12px;
  left: calc(var(--unit) * 3);
  background: var(--accent);
  color: #070b14;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
}
.plan h3 {
  margin: 0 0 var(--unit);
  font-size: 20px;
}
.price {
  display: flex;
  align-items: baseline;
  gap: var(--unit);
  flex-wrap: wrap;
  margin: 0 0 4px;
}
.price s {
  color: var(--muted);
  font-size: 17px;
}
.price strong {
  font-size: 36px;
  letter-spacing: -0.02em;
}
.price small {
  color: var(--muted);
}
.off {
  display: inline-block;
  color: var(--ok);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: calc(var(--unit) * 2);
}
.plan ul {
  list-style: none;
  padding: 0;
  margin: 0 0 calc(var(--unit) * 3);
  display: grid;
  gap: var(--unit);
  font-size: 15px;
  color: #c9d1e3;
}
.plan li {
  display: flex;
  gap: var(--unit);
}
.plan li::before {
  content: '';
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border-radius: 50%;
  background: var(--accent-dim)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.2l2.6 2.5L12 5.5' fill='none' stroke='%233ad8ff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    center / 12px no-repeat;
}
.plan .btn {
  margin-top: auto;
}
.note {
  color: var(--muted);
  font-size: 14px;
  margin-top: calc(var(--unit) * 3);
}

/* steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--unit) * 2);
  counter-reset: step;
}
.step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: calc(var(--unit) * 3);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: calc(var(--unit) * 1.5);
}
.step h3 {
  margin: 0 0 4px;
  font-size: 17px;
}
.step p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* simple pages */
.page {
  padding: calc(var(--unit) * 10) 0;
  min-height: calc(100vh - var(--top) - 120px);
}
.page .card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: calc(var(--unit) * 5);
  text-align: center;
}
.page .card img {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  margin-bottom: calc(var(--unit) * 2);
}
.status-ok {
  color: var(--ok);
}
.legal {
  max-width: 760px;
  margin: 0 auto;
}
.legal h1 {
  font-size: 36px;
}
.legal h2 {
  font-size: 22px;
  margin-top: calc(var(--unit) * 4);
}
.legal p,
.legal li {
  color: #c9d1e3;
}

footer {
  border-top: 1px solid var(--line);
  padding: calc(var(--unit) * 4) 0;
  color: var(--muted);
  font-size: 14px;
}
footer .wrap {
  display: flex;
  gap: calc(var(--unit) * 3);
  flex-wrap: wrap;
  align-items: center;
}
footer nav {
  margin-left: auto;
  display: flex;
  gap: calc(var(--unit) * 2);
}
footer a {
  color: var(--muted);
}

@media (max-width: 960px) {
  .plans {
    grid-template-columns: repeat(2, 1fr);
  }
  .features {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 720px) {
  .hero .wrap {
    grid-template-columns: 1fr;
  }
  .hero__art {
    display: none;
  }
  .features,
  .plans,
  .steps {
    grid-template-columns: 1fr;
  }
  .bar nav a:not(.btn) {
    display: none;
  }
  footer nav {
    margin-left: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }
}

.bar nav a.btn--primary,
.bar nav a.btn--primary:hover {
  color: #070b14;
}