:root {
  --bg: #0e0d13;
  --bg2: #16141d;
  --card: #1b1924;
  --line: #2b2836;
  --text: #f3f1f8;
  --muted: #a39fb3;
  --mint: #8cf0d6;
  --mint2: #26aa96;
  --pink: #ff296d;
  --radius: 16px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 75% -10%, rgba(38, 170, 150, 0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(255, 41, 109, 0.10), transparent 60%), var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--mint); text-decoration: none; }
a:hover { text-decoration: underline; }
kbd {
  display: inline-block; min-width: 1.6em; padding: 0 6px; border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 6px; background: var(--bg2); font: 600 0.85em/1.6 inherit; text-align: center; color: var(--text);
}
code { background: var(--bg2); padding: 1px 6px; border-radius: 6px; font-size: 0.9em; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

.top, main, footer { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.top { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 20px; }
.brand img { width: 34px; height: 34px; }
.top nav { display: flex; align-items: center; gap: 22px; }
.top nav a { color: var(--muted); font-size: 15px; }
.top nav a:hover { color: var(--text); text-decoration: none; }
.lang {
  background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 8px;
  padding: 3px 9px; font: inherit; font-size: 13px; cursor: pointer;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 12px; border: 1px solid var(--line);
  color: var(--text); font-weight: 600; background: var(--bg2); transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: linear-gradient(180deg, #34c3ab, var(--mint2)); border-color: transparent; color: #04211c; box-shadow: 0 8px 30px rgba(38, 170, 150, 0.35); }

/* hero */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding: 56px 0 72px; }
h1 { font-size: clamp(36px, 5vw, 58px); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 20px; }
.lead { font-size: 19px; color: #d5d1e2; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }

.demo-screen {
  position: relative; height: 380px; border-radius: 22px; overflow: hidden;
  background: linear-gradient(160deg, #1e2a3a, #2a1f35 55%, #16141d);
  border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.demo-screen::before { /* a hint of a desktop behind */
  content: ""; position: absolute; inset: 18px 18px auto 18px; height: 22px; border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
}
.demo-character { position: absolute; left: 50%; top: 40px; transform: translateX(-50%); width: 150px; height: 150px; }
.demo-character img { width: 100%; height: 100%; image-rendering: auto; }
.demo-bar {
  position: absolute; left: 7%; right: 7%; top: 196px; height: 54px; display: flex; align-items: center;
  padding: 0 16px; border-radius: 14px; background: rgba(22, 20, 28, 0.88); border: 1.5px solid var(--pink);
  box-shadow: 0 0 0 4px rgba(255, 41, 109, 0.08);
}
.demo-input { font-size: 17px; white-space: nowrap; overflow: hidden; }
.demo-input:empty::before { content: attr(data-placeholder); color: rgba(255, 255, 255, 0.4); }
.caret { width: 2px; height: 22px; background: var(--pink); margin-left: 1px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.chip { margin-left: auto; font-size: 13px; font-weight: 600; color: #33ff8c; border: 1px solid #33ff8c; border-radius: 999px; padding: 2px 10px; }
.demo-answer {
  position: absolute; left: 7%; right: 7%; top: 258px; bottom: 16px; padding: 12px 16px; border-radius: 14px;
  background: rgba(22, 20, 28, 0.88); border: 1.5px solid rgba(51, 255, 140, 0.5); font-size: 15px; line-height: 1.5;
  color: #e8e5f1; overflow: hidden; opacity: 0; transition: opacity 0.25s;
}
.demo-answer.on { opacity: 1; }

/* sections */
section { padding: 56px 0; }
h2 { font-size: 34px; letter-spacing: -0.01em; margin: 0 0 28px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid article { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.grid h3 { margin: 0 0 8px; font-size: 19px; }
.grid p { margin: 0; color: var(--muted); font-size: 15.5px; }

.tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--bg2); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 22px; }
.tabs button { background: none; border: 0; color: var(--muted); font: inherit; font-weight: 600; padding: 8px 18px; border-radius: 9px; cursor: pointer; }
.tabs button.on { background: var(--card); color: var(--text); }
.os { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.os ol { margin: 22px 0 10px; padding-left: 22px; }
.os li { margin-bottom: 10px; }

.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--muted); margin: 10px 0 0; }

footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 32px 24px 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 32px; }

/* privacy page */
.doc { max-width: 760px; padding: 24px 0 40px; }
.doc h1 { font-size: 40px; }
.doc h2 { font-size: 24px; margin: 36px 0 12px; }
.doc li { margin-bottom: 6px; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 24px; }
  .grid { grid-template-columns: 1fr; }
  .top nav a { display: none; }
  .demo-screen { height: 360px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .caret { animation: none; }
}