:root {
  --bg: #ffffff;
  --bg-soft: #f6f5fa;
  --card: #ffffff;
  --border: #e6e3ef;
  --text: #17151f;
  --muted: #625f75;
  --accent: #7c3aed;
  --accent-2: #db2777;
  --accent-soft: #f1ecfe;
  --on-accent: #ffffff;
  --shadow: 0 1px 2px rgba(20, 16, 40, 0.05), 0 10px 30px rgba(20, 16, 40, 0.07);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #0f0e15;
    --bg-soft: #15141d;
    --card: #1b1a25;
    --border: #2b2938;
    --text: #ecebf3;
    --muted: #a3a0b5;
    --accent: #a78bfa;
    --accent-2: #f472b6;
    --accent-soft: rgba(167, 139, 250, 0.14);
    --on-accent: #1b1033;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.3);
    color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --bg: #0f0e15;
  --bg-soft: #15141d;
  --card: #1b1a25;
  --border: #2b2938;
  --text: #ecebf3;
  --muted: #a3a0b5;
  --accent: #a78bfa;
  --accent-2: #f472b6;
  --accent-soft: rgba(167, 139, 250, 0.14);
  --on-accent: #1b1033;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.3);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
img { max-width: 100%; }
[hidden] { display: none !important; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

.nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 0; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
.logo img { width: 34px; height: 34px; }
.lang-switch { display: flex; gap: 4px; font-size: 13px; }
.lang-switch a { padding: 4px 8px; border-radius: 999px; color: var(--muted); text-decoration: none; text-transform: uppercase; font-weight: 600; }
.lang-switch a.active { background: var(--accent-soft); color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-weight: 650;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary { border: 0; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }

.hero { padding: 48px 0 32px; text-align: center; }
.hero h1 { font-size: clamp(32px, 6vw, 56px); line-height: 1.08; letter-spacing: -0.035em; margin: 0 auto 16px; max-width: 820px; }
.grad { background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { font-size: clamp(17px, 2.4vw, 20px); color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.note { font-size: 13px; color: var(--muted); margin-top: 14px; }

.demo {
  margin: 40px auto 0;
  max-width: 820px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: #101016;
  box-shadow: var(--shadow);
  overflow: hidden;
  aspect-ratio: 16 / 8;
  position: relative;
}
.demo-search {
  position: absolute;
  top: 6%;
  right: 4%;
  width: min(60%, 360px);
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(30, 30, 40, 0.92);
  color: #fff;
  font-size: 14px;
  text-align: left;
  display: flex;
  justify-content: space-between;
}
.demo-search span:last-child { color: rgba(255, 255, 255, 0.6); }
.demo-play {
  position: absolute;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 26px;
}
.demo-bar { position: absolute; left: 4%; right: 4%; bottom: 12%; height: 5px; border-radius: 3px; background: rgba(255, 255, 255, 0.25); }
.demo-bar::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 34%; border-radius: 3px; background: #ff0033; }
.demo-mark { position: absolute; top: -4px; bottom: -4px; width: 4px; border-radius: 2px; background: #ffd60a; }
.demo-mark.note { background: #a78bfa; top: -7px; }

.section { padding: 56px 0; }
.section h2 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.025em; text-align: center; margin: 0 0 12px; }
.section > .wrap > p.lead { text-align: center; color: var(--muted); max-width: 640px; margin: 0 auto 32px; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature { padding: 22px; border: 1px solid var(--border); border-radius: 18px; background: var(--card); }
.feature .icon { font-size: 28px; }
.feature h3 { margin: 10px 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }
.soft { background: var(--bg-soft); }

.promise { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; text-align: center; }
.promise div { padding: 18px; }
.promise strong { display: block; font-size: 17px; margin: 6px 0 4px; }
.promise span { color: var(--muted); font-size: 15px; }

.faq { max-width: 720px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 650; }
.faq p { color: var(--muted); margin: 8px 0 0; }

.card { padding: 28px; border: 1px solid var(--border); border-radius: 20px; background: var(--card); box-shadow: var(--shadow); }
.page { max-width: 760px; margin: 0 auto; padding: 24px 16px 48px; }
.page h1 { font-size: clamp(28px, 5vw, 40px); letter-spacing: -0.03em; line-height: 1.15; margin: 8px 0 12px; }
.steps { counter-reset: s; list-style: none; padding: 0; display: flex; flex-direction: column; gap: 14px; margin: 24px 0; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: start; }
.steps li::before { content: counter(s); width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-weight: 700; }
.steps strong { display: block; }
.steps span { color: var(--muted); }
kbd { padding: 1px 7px; border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 6px; background: var(--bg-soft); font: 600 13px system-ui, sans-serif; }

.reasons { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.reasons label { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; cursor: pointer; font-size: 15px; }
.reasons input { accent-color: var(--accent); }
textarea { width: 100%; min-height: 90px; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); color: var(--text); font: inherit; }

.ad-slot { margin: 28px 0; min-height: 90px; }
.ad-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

.legal h2 { font-size: 20px; margin: 28px 0 8px; }
.legal p, .legal li { color: var(--text); }

footer { padding: 32px 0 40px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; }
footer a { color: var(--muted); }

@media (max-width: 820px) {
  .features, .promise { grid-template-columns: 1fr; }
  .demo { aspect-ratio: 16 / 10; }
}