:root {
  --brand-50: #F5F1FF;
  --brand-100: #EAE1FF;
  --brand-200: #D4C3FF;
  --brand-300: #B69AFF;
  --brand-500: #6840D7;
  --brand-700: #3A10AD;
  --brand-800: #2E0D89;
  --brand-900: #220A66;

  --bg: #F8F7FC;
  --fg: #242033;
  --muted: #655E75;
  --surface: #FFFFFF;
  --surface-tint: #F5F1FF;
  --border: #E7E3EF;
  --primary: #3A10AD;
  --primary-hover: #2E0D89;
  --on-primary: #FFFFFF;
  --link: #3A10AD;
  --success-bg: #E8FAF0;
  --success-fg: #166534;
  --shadow: 0 1px 2px rgba(36, 32, 51, .05), 0 8px 24px rgba(36, 32, 51, .06);
  --phone-shadow: 0 24px 60px rgba(34, 10, 102, .22);
  --radius: 16px;
  --font: "Inter", "Noto Sans Bengali", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12101A;
    --fg: #F3F1F7;
    --muted: #A49DB4;
    --surface: #1C1928;
    --surface-tint: #231D38;
    --border: #2E2A3D;
    --primary: #8E68F0;
    --primary-hover: #B69AFF;
    --on-primary: #160641;
    --link: #B69AFF;
    --success-bg: #12301F;
    --success-fg: #86EFAC;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    --phone-shadow: 0 24px 60px rgba(0, 0, 0, .5);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
[id] { scroll-margin-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 16px; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.top .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 700; font-size: 18px; }
.logo img { width: 32px; height: 32px; }
.logo span { color: var(--muted); font-weight: 600; }
.nav { display: flex; gap: 20px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--fg); }
@media (max-width: 760px) { .nav { display: none; } .top .btn { margin-left: auto; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--primary); color: var(--on-primary);
  text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 10px 18px; border-radius: 12px;
  transition: background .15s ease, transform .15s ease;
}
.btn:hover { background: var(--primary-hover); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn.big { font-size: 17px; padding: 14px 24px; border-radius: 14px; }
.btn.ghost { background: transparent; color: var(--fg); border: 1px solid var(--border); }
.btn.ghost:hover { background: var(--surface-tint); }

/* Hero */
.hero { padding: 72px 0 48px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .02em;
  color: var(--primary); background: var(--surface-tint);
  border: 1px solid var(--border); padding: 4px 12px; border-radius: 999px;
}
h1 { font-size: clamp(36px, 5.4vw, 58px); line-height: 1.08; letter-spacing: -.025em; margin: 18px 0 16px; }
h1 .bn { font-family: "Noto Sans Bengali", var(--font); color: var(--primary); font-weight: 700; }
.lede { font-size: clamp(17px, 2vw, 19px); color: var(--muted); max-width: 34em; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.meta { font-size: 14px; color: var(--muted); margin: 12px 0 0; }
.meta a { color: inherit; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 0; padding: 0; list-style: none; }
.chips li {
  font-size: 13px; font-weight: 600; color: var(--success-fg); background: var(--success-bg);
  padding: 5px 12px; border-radius: 999px;
}
.phones { position: relative; display: flex; justify-content: center; gap: 20px; }
.phone {
  width: min(250px, 44vw); border-radius: 32px; overflow: hidden;
  border: 8px solid #171421; background: #171421; box-shadow: var(--phone-shadow);
}
.phone img { width: 100%; height: auto; }
.phones .phone:nth-child(2) { margin-top: 64px; }
@media (max-width: 880px) {
  .hero { padding-top: 48px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .phones { order: 2; }
}

/* Sections */
section { padding: 72px 0; }
section.alt { background: var(--surface); border-block: 1px solid var(--border); }
h2 { font-size: clamp(28px, 3.6vw, 38px); line-height: 1.15; letter-spacing: -.02em; margin: 0 0 12px; }
.sub { color: var(--muted); font-size: 18px; max-width: 40em; margin: 0 0 40px; }
h3 { font-size: 18px; margin: 0 0 6px; line-height: 1.3; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
section.alt .card { background: var(--bg); box-shadow: none; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.ico {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  background: var(--surface-tint); color: var(--primary); margin-bottom: 14px;
}
.ico svg { width: 22px; height: 22px; }

.features { columns: 2 340px; column-gap: 16px; }
.features .card { break-inside: avoid; margin: 0 0 16px; }
.features ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.features li { margin: 4px 0; }
.features li b { color: var(--fg); font-weight: 600; }

/* Screenshots */
.shots {
  display: grid; grid-auto-flow: column; grid-auto-columns: 220px; gap: 20px;
  overflow-x: auto; scroll-snap-type: x mandatory; padding: 8px 16px 24px;
  margin-inline: calc((100vw - min(1120px, 100vw - 32px)) / -2);
  padding-inline: max(16px, calc((100vw - 1120px) / 2));
  scrollbar-width: thin;
}
.shots figure { margin: 0; scroll-snap-align: start; }
.shots .phone { width: 100%; border-width: 6px; border-radius: 26px; box-shadow: var(--shadow); }
.shots .doc { border-radius: 10px; border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow); background: #fff; }
.shots figcaption { font-size: 14px; color: var(--muted); margin-top: 12px; line-height: 1.4; }

/* What's new */
.news { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.news pre {
  white-space: pre-wrap; font: inherit; margin: 0; color: var(--fg); font-size: 15px;
}
.ver { font-weight: 700; color: var(--primary); }
@media (max-width: 880px) { .news { grid-template-columns: 1fr; } }

/* Install steps */
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
.steps li { counter-increment: s; position: relative; padding-top: 52px; }
.steps li::before {
  content: counter(s); position: absolute; top: 22px; left: 22px;
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: var(--primary); color: var(--on-primary); font-weight: 700; font-size: 15px;
}

.band {
  background: var(--brand-700); color: #fff; border-radius: 24px; padding: 48px;
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
}
.band h2 { color: #fff; }
.band p { color: var(--brand-100); margin: 0; font-size: 17px; }
.band .btn { background: #fff; color: var(--brand-700); }
.band .btn:hover { background: var(--brand-100); }
@media (max-width: 760px) { .band { grid-template-columns: 1fr; padding: 32px 24px; } }

.fine { color: var(--muted); font-size: 15px; }
.fine ul { padding-left: 18px; }

footer { padding: 40px 0 56px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--border); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer a { color: var(--muted); }

/* Privacy page */
.doc-page { padding: 56px 0 72px; }
.doc-page .wrap { max-width: 760px; }
.doc-page h1 { font-size: clamp(32px, 4.4vw, 44px); }
.doc-page h2 { font-size: 22px; margin: 32px 0 8px; }
.doc-page p, .doc-page li { color: var(--fg); }
.doc-page ul { padding-left: 20px; }
.lang { display: flex; gap: 8px; margin: 8px 0 24px; }
.lang a { text-decoration: none; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--border); color: var(--fg); font-size: 14px; font-weight: 600; }
.lang a:hover { background: var(--surface-tint); }
.bn-text { font-family: "Noto Sans Bengali", var(--font); line-height: 1.8; }
hr { border: 0; border-top: 1px solid var(--border); margin: 48px 0; }