:root {
    color-scheme: light;
    --bg: #fbfaf8; --card: #fff; --ink: #15131c; --fg2: #3b3843; --muted: #625f6c; --faint: #8b8794;
    --line: #e6e4de; --soft: #f3f2ee; --ember: #d4502a; --ember-ink: #b8401d; --ember-soft: #fbeee8; --violet: #5b45d6;
    --shadow: 0 1px 2px rgba(21,19,28,.04), 0 2px 8px -2px rgba(21,19,28,.05);
    --lift: 0 1px 2px rgba(21,19,28,.04), 0 24px 48px -20px rgba(21,19,28,.22);
    --swift: cubic-bezier(.16,1,.3,1);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 Geist, ui-sans-serif, system-ui, "Noto Sans Bengali", sans-serif; -webkit-font-smoothing: antialiased; }
  img, video { display: block; max-width: 100%; height: auto; }
  a { color: inherit; }
  .wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
  @media (min-width: 640px) { .wrap { padding: 0 24px; } }
  @media (min-width: 1024px) { .wrap { padding: 0 32px; } }
  .mono { font-family: "Geist Mono", ui-monospace, monospace; }
  .bn { font-family: "Noto Sans Bengali", Geist, sans-serif; }
  h1, h2, h3 { margin: 0; letter-spacing: -0.03em; font-weight: 600; }
  h1 { font-size: clamp(40px, 6.2vw, 66px); line-height: 1.02; letter-spacing: -0.04em; }
  h2 { font-size: clamp(30px, 3.6vw, 42px); line-height: 1.1; }
  h3 { font-size: 17px; letter-spacing: -0.01em; }
  p { margin: 0; }
  .eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--ember-ink); }
  .lead { font-size: 18px; color: var(--muted); line-height: 1.65; text-wrap: pretty; }
  .muted { color: var(--muted); }
  .dots { background-image: radial-gradient(rgba(21,19,28,.09) 1px, transparent 1px); background-size: 20px 20px; }

  /* buttons */
  .btn { display: inline-flex; align-items: center; gap: 8px; height: 46px; padding: 0 20px; border-radius: 999px; font-weight: 500; font-size: 15px; text-decoration: none; border: 1px solid var(--line); background: var(--card); color: var(--ink); transition: transform .3s var(--swift), box-shadow .3s var(--swift), background .2s; cursor: pointer; white-space: nowrap; }
  .btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
  .btn.ink { background: var(--ink); color: #fff; border-color: var(--ink); }
  .btn.ink:hover { background: #2a2733; }
  .btn.sm { height: 38px; padding: 0 16px; font-size: 14px; }
  .btn svg { width: 16px; height: 16px; flex: none; }
  :focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; border-radius: 6px; }

  /* nav */
  header.nav { position: sticky; top: 0; z-index: 20; background: rgba(251,250,248,.82); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
  header.nav.scrolled { border-bottom-color: var(--line); }
  .nav .wrap { display: flex; align-items: center; height: 64px; gap: 24px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -0.02em; text-decoration: none; }
  .brand img { width: 28px; height: 28px; border-radius: 4px; }
  .brand small { font-weight: 400; color: var(--faint); font-size: 13px; letter-spacing: 0; white-space: nowrap; }
  @media (max-width: 480px) { .nav .brand small { display: none; } }
  .nav nav { display: none; gap: 4px; margin: 0 auto; }
  .nav nav a { text-decoration: none; font-size: 14px; color: var(--fg2); padding: 6px 12px; border-radius: 999px; transition: background .2s; }
  .nav nav a:hover { background: var(--soft); }
  .nav .right { margin-left: auto; display: flex; gap: 8px; }
  @media (min-width: 1100px) { .nav nav { display: flex; } .nav .right { margin-left: 0; } }

  /* hero */
  .hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
  .hero .dots { position: absolute; inset: 0; mask-image: radial-gradient(ellipse at 80% 0%, #000, transparent 62%); -webkit-mask-image: radial-gradient(ellipse at 80% 0%, #000, transparent 62%); pointer-events: none; }
  .hero .glow { position: absolute; right: -10%; top: -20%; width: 60%; height: 80%; background: radial-gradient(closest-side, rgba(212,80,42,.10), transparent); pointer-events: none; }
  .hero .wrap { position: relative; display: grid; gap: 56px; padding-top: 72px; padding-bottom: 88px; }
  @media (min-width: 1024px) { .hero .wrap { grid-template-columns: 5fr 7fr; align-items: center; padding-top: 88px; padding-bottom: 104px; } }
  .hero h1 .u { position: relative; white-space: nowrap; }
  .hero h1 .u::after { content: ""; position: absolute; left: 2%; right: 2%; bottom: -0.06em; height: 0.09em; border-radius: 99px; background: var(--ember); opacity: .85; }
  .hero .lead { margin-top: 24px; max-width: 520px; }
  .hero .ctas { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
  .hero .fine { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13.5px; color: var(--muted); }
  .hero .fine span { display: inline-flex; align-items: center; gap: 6px; }
  .hero .fine svg { width: 15px; height: 15px; color: var(--ember); }
  .stage { position: relative; padding-right: 0; }
  @media (min-width: 640px) { .stage { padding-right: 96px; padding-bottom: 40px; } }
  .frame { border: 1px solid var(--line); background: var(--card); border-radius: 14px; overflow: hidden; box-shadow: var(--lift); }
  .frame .bar { display: flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border-bottom: 1px solid var(--line); background: #f7f6f3; }
  .frame .bar i { width: 9px; height: 9px; border-radius: 50%; background: #dcd9d2; }
  .frame .bar span { margin: 0 auto; font: 11px "Geist Mono", monospace; color: var(--muted); border: 1px solid var(--line); background: var(--card); border-radius: 99px; padding: 1px 12px; transform: translateX(-18px); }
  .phone { display: none; position: absolute; right: 0; bottom: 0; width: 196px; aspect-ratio: 9/17.4; padding: 7px; border-radius: 34px; background: #111113; box-shadow: 0 30px 60px -18px rgba(21,19,28,.45), 0 0 0 1px rgba(255,255,255,.06) inset; }
  @media (min-width: 640px) { .phone { display: block; } }
  .phone video, .phone img { width: 100%; height: 100%; object-fit: contain; border-radius: 27px; background: #f7f4ec; }
  .phone .tag { position: absolute; left: -14px; bottom: 56px; transform: translateX(-100%); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; box-shadow: var(--shadow); font-size: 12.5px; line-height: 1.35; width: 172px; }
  .phone .tag b { display: block; font-weight: 600; }
  .phone .tag em { font-style: normal; color: var(--muted); }
  .sound { position: absolute; right: 14px; bottom: 14px; width: 30px; height: 30px; border-radius: 50%; border: 0; background: rgba(21,19,28,.7); color: #fff; display: grid; place-items: center; cursor: pointer; }
  .sound svg { width: 15px; height: 15px; }

  /* stats */
  .stats { display: grid; grid-template-columns: repeat(2, 1fr); border-bottom: 1px solid var(--line); }
  @media (min-width: 900px) { .stats { grid-template-columns: repeat(4, 1fr); } }
  .stat { padding: 28px 24px; border-right: 1px solid var(--line); border-top: 1px solid var(--line); }
  .stats .stat:nth-child(-n+2) { border-top: 0; }
  @media (min-width: 900px) { .stats .stat { border-top: 0; } .stats .stat:last-child { border-right: 0; } }
  .stat b { display: block; font: 600 clamp(30px, 3.4vw, 40px)/1.1 "Geist Mono", monospace; letter-spacing: -0.04em; }
  .stat b em { font-style: normal; color: var(--ember); font-size: .6em; letter-spacing: -0.02em; }
  .stat span { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); max-width: 230px; }

  /* sections */
  section.s { padding: 96px 0; }
  section.s.tint { background: #f6f5f1; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .head { max-width: 680px; margin-bottom: 48px; }
  .head h2 { margin-top: 12px; }
  .head .lead { margin-top: 16px; }

  /* how it works */
  .how { display: grid; gap: 32px; }
  @media (min-width: 1024px) { .how { grid-template-columns: 4fr 8fr; align-items: start; } }
  .steps { display: grid; gap: 10px; counter-reset: step; }
  .step { text-align: left; width: 100%; display: grid; grid-template-columns: 34px 1fr; gap: 4px 14px; padding: 18px 18px; border-radius: 16px; border: 1px solid transparent; background: transparent; font: inherit; color: inherit; cursor: pointer; transition: background .25s, border-color .25s, box-shadow .25s; }
  .step:hover { background: rgba(255,255,255,.6); }
  .step[aria-selected="true"] { background: var(--card); border-color: var(--line); box-shadow: var(--shadow); }
  .step .n { grid-row: span 2; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font: 500 13px "Geist Mono", monospace; background: var(--soft); color: var(--muted); transition: background .25s, color .25s; }
  .step[aria-selected="true"] .n { background: var(--ember); color: #fff; }
  .step h3 { align-self: center; }
  .step p { font-size: 14.5px; color: var(--muted); line-height: 1.55; }
  .how .view { position: sticky; top: 96px; }
  .how .view img { width: 100%; height: auto; aspect-ratio: 1440/900; object-fit: cover; object-position: top; transition: opacity .25s; }
  .how .view .cap { margin-top: 14px; font-size: 14px; color: var(--muted); min-height: 44px; }

  /* features */
  .grid { display: grid; gap: 16px; }
  @media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .grid { grid-template-columns: repeat(3, 1fr); } }
  .card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: var(--shadow); }
  .feat { display: flex; flex-direction: column; gap: 10px; transition: transform .35s var(--swift), box-shadow .35s var(--swift); }
  .feat:hover { transform: translateY(-3px); box-shadow: var(--lift); }
  .ico { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--ember-soft); color: var(--ember-ink); margin-bottom: 6px; }
  .ico svg { width: 20px; height: 20px; }
  .feat p { font-size: 14.5px; color: var(--muted); line-height: 1.6; }

  /* split rows */
  .split { display: grid; gap: 40px; align-items: center; }
  .split + .split { margin-top: 96px; }
  @media (min-width: 1024px) { .split { grid-template-columns: 5fr 7fr; gap: 64px; } .split.flip { grid-template-columns: 7fr 5fr; } .split.flip > :first-child { order: 2; } }
  .split h2 { margin-top: 12px; }
  .split .lead { margin-top: 16px; }
  .checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
  .checks li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; font-size: 15px; color: var(--fg2); }
  .checks svg { width: 20px; height: 20px; color: var(--ember); margin-top: 2px; }
  .zoom { cursor: zoom-in; }

  /* showcase */
  .show { display: grid; gap: 40px; align-items: center; }
  @media (min-width: 900px) { .show { grid-template-columns: auto 1fr; gap: 72px; } }
  .show .phone { position: relative; display: block; width: 270px; margin: 0 auto; }
  .made { display: grid; gap: 14px; margin-top: 28px; }
  .made div { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 15px; }
  .made dt { color: var(--muted); }

  /* always-on */
  .timeline { display: grid; gap: 0; margin-top: 8px; }
  .tl { display: grid; grid-template-columns: 76px 22px 1fr; gap: 14px; padding: 12px 0; font-size: 15px; }
  .tl time { font: 13px "Geist Mono", monospace; color: var(--muted); padding-top: 2px; }
  .tl i { position: relative; }
  .tl i::before { content: ""; position: absolute; left: 10px; top: 0; bottom: -24px; width: 1px; background: var(--line); }
  .tl:last-child i::before { display: none; }
  .tl i::after { content: ""; position: absolute; left: 5px; top: 6px; width: 11px; height: 11px; border-radius: 50%; background: var(--card); border: 2px solid var(--faint); }
  .tl.on i::after { border-color: var(--ember); background: var(--ember); }
  .tl small { display: block; color: var(--muted); font-size: 13.5px; }

  /* download */
  .os { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
  .os span { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; border: 1px solid var(--line); border-radius: 99px; padding: 4px 12px; color: var(--fg2); background: var(--card); }
  .os svg, .os img { width: 15px; height: 15px; color: var(--ember-ink); }
  code { font: 13px "Geist Mono", monospace; background: var(--soft); border-radius: 5px; padding: 1px 6px; }

  /* faq */
  .faq { display: grid; gap: 10px; max-width: 820px; }
  details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 0 20px; box-shadow: var(--shadow); }
  summary { list-style: none; cursor: pointer; padding: 18px 0; font-weight: 500; display: flex; justify-content: space-between; gap: 16px; }
  summary::-webkit-details-marker { display: none; }
  summary::after { content: "+"; font: 400 20px/1 Geist, sans-serif; color: var(--muted); transition: transform .25s var(--swift); }
  details[open] summary::after { transform: rotate(45deg); }
  details p { padding: 0 0 18px; color: var(--muted); font-size: 15px; line-height: 1.65; }

  /* cta band + footer */
  .band { background: var(--ink); color: #f4f3f6; border-radius: 24px; padding: 56px 32px; text-align: center; position: relative; overflow: hidden; }
  .band::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px); background-size: 20px 20px; mask-image: radial-gradient(ellipse at center, #000, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 70%); }
  .band > * { position: relative; }
  .band p { color: #c9c6d1; margin: 14px auto 0; max-width: 520px; }
  .band .ctas { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 28px; }
  .band .btn { background: #fff; color: var(--ink); border-color: #fff; }
  .band .btn.ghost { background: transparent; color: #fff; border-color: #3a3744; }
  footer { padding: 48px 0 56px; font-size: 14px; color: var(--muted); }
  footer .wrap { display: grid; gap: 24px; }
  @media (min-width: 900px) { footer .wrap { grid-template-columns: 1fr auto; align-items: end; } }
  footer a { text-decoration: none; }
  footer .brand { color: var(--ink); }
  footer a:hover { color: var(--ink); }
  footer .links { display: flex; flex-wrap: wrap; gap: 8px 20px; }

  .figcap { margin-top: 14px; font-size: 14px; color: var(--muted); text-align: center; }

  /* bring your own AI */
  .ai { display: grid; gap: 16px; }
  @media (min-width: 900px) { .ai { grid-template-columns: repeat(3, 1fr); } }
  .ai .card { display: flex; flex-direction: column; gap: 10px; padding: 24px; }
  .badge { align-self: flex-start; font-size: 12px; font-weight: 500; color: var(--ember-ink); background: var(--ember-soft); border-radius: 99px; padding: 3px 10px; }
  .ai p { font-size: 15px; color: var(--muted); line-height: 1.6; }
  .ai small { margin-top: auto; padding-top: 6px; font-size: 12.5px; color: var(--faint); line-height: 1.5; }

  .ai .logo { width: 30px; height: 30px; margin-bottom: 2px; }
  .ai .logo.ico { width: 40px; height: 40px; margin-bottom: 0; }

  /* chips, logo rows */
  .logos { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
  .logos img { width: 22px; height: 22px; }
  .hero .posts-to { margin-top: 26px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; font-size: 13px; color: var(--muted); }
  .chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px 8px 10px; border: 1px solid var(--line); background: var(--card); border-radius: 99px; font-size: 14px; color: var(--ink); box-shadow: var(--shadow); white-space: nowrap; }
  .chip img, .chip svg { width: 18px; height: 18px; flex: none; }
  .chip svg { color: var(--ember-ink); }
  .chip em { font-style: normal; color: var(--muted); }
  .chip.sm { padding: 5px 11px 5px 8px; font-size: 13px; gap: 6px; box-shadow: none; }
  .chip.sm img, .chip.sm svg { width: 15px; height: 15px; }
  .pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
  .center { text-align: center; justify-content: center; margin-left: auto; margin-right: auto; }
  .ctas.center { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

  /* what it makes: formats at their real shapes */
  .formats { display: flex; gap: 20px; align-items: flex-start; overflow-x: auto; padding: 4px 4px 20px; margin: 0 -4px; scroll-snap-type: x mandatory; }
  @media (min-width: 1024px) { .formats { justify-content: center; overflow: visible; } }
  .fmt { margin: 0; flex: none; scroll-snap-align: start; }
  .fmt .ar { height: 230px; border-radius: 14px; box-shadow: var(--lift); position: relative; overflow: hidden; color: #fff; padding: 14px; display: flex; flex-direction: column; justify-content: flex-end; gap: 4px; transition: transform .35s var(--swift); }
  .fmt:hover .ar { transform: translateY(-4px); }
  .fmt .ar b { font-size: 17px; line-height: 1.15; letter-spacing: -0.02em; }
  .fmt .ar em { font-style: normal; font-size: 11.5px; opacity: .85; }
  .fmt .ar > span { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; opacity: .85; }
  .r916 { aspect-ratio: 9/16; } .r169 { aspect-ratio: 16/9; } .r11 { aspect-ratio: 1; } .r45 { aspect-ratio: 4/5; }
  .f-reel { background: linear-gradient(165deg, #ea580c, #7c2d12); }
  .f-reel .bars { position: absolute; top: 10px; left: 10px; right: 10px; display: flex; gap: 3px; }
  .f-reel .bars i { flex: 1; height: 2px; border-radius: 2px; background: rgba(255,255,255,.4); }
  .f-reel .bars i:first-child { background: #fff; }
  .f-video { background: radial-gradient(circle at 75% 20%, rgba(212,80,42,.45), transparent 55%), #15131c; }
  .fmt .f-video b { font-size: 22px; max-width: 70%; }
  .f-video .play { position: absolute; top: 50%; left: 50%; width: 52px; height: 52px; margin: -40px 0 0 -26px; border-radius: 50%; background: rgba(255,255,255,.16); backdrop-filter: blur(4px); }
  .f-video .play::after { content: ""; position: absolute; left: 21px; top: 16px; border-left: 15px solid #fff; border-top: 10px solid transparent; border-bottom: 10px solid transparent; }
  .f-square { background: #15803d; justify-content: center; text-align: center; }
  .fmt .f-square b { font-size: 46px; letter-spacing: -0.05em; }
  .f-portrait { background: linear-gradient(160deg, #6d5ae6, #3b2a9e); }
  .fmt .f-portrait b { font-size: 30px; letter-spacing: -0.04em; }
  .fmt figcaption { margin-top: 12px; font-size: 13.5px; line-height: 1.35; width: 0; min-width: 100%; }
  .fmt figcaption b { font-weight: 600; }
  .fmt figcaption b { display: block; }
  .fmt figcaption span { font: 12px "Geist Mono", monospace; color: var(--muted); }
  .kinds { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 36px; }
  @media (min-width: 900px) { .kinds { grid-template-columns: repeat(4, 1fr); } }
  .kind { display: flex; align-items: center; gap: 12px; padding: 14px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); min-width: 0; }
  .kind .ico { margin: 0; flex: none; }
  .kind b { display: block; font-size: 14.5px; font-weight: 600; }
  .kind span:not(.ico) { display: block; font-size: 12.5px; color: var(--muted); line-height: 1.4; }
  @media (max-width: 520px) { .kind { flex-direction: column; align-items: flex-start; gap: 10px; } }
  .uses { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px; margin-top: 32px; }
  .uses > span:first-child { font-size: 13px; color: var(--muted); }

  /* feature visuals */
  .viz { height: 56px; display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
  .viz .sw { width: 30px; height: 30px; border-radius: 9px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.06); }
  .viz .font { margin-left: 6px; font: 600 26px Geist, sans-serif; letter-spacing: -0.03em; }
  .viz.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
  .viz.week i { height: 38px; border-radius: 8px; background: var(--soft); display: grid; place-items: center; font: 500 11px "Geist Mono", monospace; font-style: normal; color: var(--faint); }
  .viz.week i.on { background: var(--ember-soft); color: var(--ember-ink); box-shadow: inset 0 -3px 0 var(--ember); }
  .viz.logos { gap: 10px; }
  .viz.logos img { width: 20px; height: 20px; }
  .viz.chat img { width: 20px; height: 20px; }
  .viz .bub { font-size: 12px; padding: 5px 9px; border-radius: 10px; background: var(--soft); white-space: nowrap; }
  .viz .bub.us { background: var(--ink); color: #fff; }
  .viz.cost { align-items: flex-end; gap: 6px; }
  .viz.cost i { width: 16px; border-radius: 4px 4px 0 0; background: var(--ember); opacity: .8; }
  .viz.cost span { margin-left: 8px; align-self: center; font: 12px "Geist Mono", monospace; color: var(--muted); }
  .viz .ico { margin: 0; }
  .small { font-size: 13px; }

  /* assistant: who drives it, and what it can do */
  .mcp { margin-top: 28px; display: grid; justify-items: center; gap: 8px; padding: 22px 16px; border: 1px dashed var(--line); border-radius: 18px; background: rgba(255,255,255,.5); }
  .mcp .row { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
  .mcp .hub { display: inline-flex; align-items: center; gap: 10px; background: var(--ink); color: #fff; border-radius: 14px; padding: 10px 18px; font-weight: 600; box-shadow: var(--lift); }
  .mcp .hub img { border-radius: 6px; }
  .mcp .hub small { display: block; font: 11.5px "Geist Mono", monospace; color: #c9c6d1; }
  .mcp .arrow { width: 2px; height: 20px; background: var(--faint); position: relative; }
  .mcp .arrow::after { content: ""; position: absolute; left: -4px; bottom: -2px; border-top: 6px solid var(--faint); border-left: 5px solid transparent; border-right: 5px solid transparent; }
  .note-line { display: flex; align-items: center; gap: 10px; margin-top: 14px; font-size: 14.5px; color: var(--fg2); min-width: 0; }
  .note-line svg { width: 18px; height: 18px; flex: none; color: var(--ember-ink); }
  .note-line code { overflow-wrap: anywhere; }
  .flow { list-style: none; padding: 0; margin: 30px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .flow li { position: relative; display: grid; justify-items: center; text-align: center; font-size: 14px; font-weight: 500; line-height: 1.3; }
  .flow .ico { margin: 0 0 10px; position: relative; z-index: 1; }
  .flow li:not(:last-child)::after { content: ""; position: absolute; top: 20px; left: calc(50% + 28px); width: calc(100% - 48px); height: 2px; background: repeating-linear-gradient(90deg, var(--faint) 0 4px, transparent 4px 8px); }
  .flow small { display: block; margin-top: 2px; font: 400 12px "Geist Mono", monospace; color: var(--muted); }

  /* open source: what it costs */
  .head.center { text-align: center; }
  .eq { display: flex; flex-wrap: wrap; justify-content: center; align-items: stretch; gap: 10px; }
  .eq .term { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 14px; width: 150px; display: grid; justify-items: center; align-content: start; gap: 4px; text-align: center; box-shadow: var(--shadow); }
  .eq .term img { margin-bottom: 6px; }
  .eq .term svg { width: 30px; height: 30px; margin-bottom: 6px; color: var(--ember-ink); }
  .eq .term b { font-size: 14px; font-weight: 500; color: var(--muted); }
  .eq .term span { font: 600 22px Geist, sans-serif; letter-spacing: -0.03em; }
  .eq .term em { font-style: normal; font-size: 12.5px; color: var(--muted); }
  .eq .term.dark { background: var(--ink); border-color: var(--ink); color: #fff; }
  .eq .term.dark b, .eq .term.dark em { color: #c9c6d1; }
  .eq .term.dark img { border-radius: 6px; }
  .eq .op { align-self: center; font: 500 22px "Geist Mono", monospace; font-style: normal; color: var(--faint); }
  .pills.center { margin-top: 28px; }

  /* download */
  .dsteps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
  @media (min-width: 900px) { .dsteps { grid-template-columns: repeat(4, 1fr); } }
  .dsteps li { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 26px 14px 20px; box-shadow: var(--shadow); display: grid; justify-items: center; align-content: start; gap: 6px; text-align: center; font-size: 13.5px; color: var(--muted); }
  .dsteps .n { position: absolute; top: 10px; left: 12px; width: 22px; height: 22px; border-radius: 7px; background: var(--ember); color: #fff; display: grid; place-items: center; font: 500 12px "Geist Mono", monospace; }
  .dsteps li > img, .dsteps li > svg { width: 38px; height: 38px; margin-bottom: 6px; color: var(--ember-ink); }
  .dsteps b { color: var(--ink); font-size: 15px; font-weight: 600; }
  .dsteps a { color: var(--ember-ink); text-underline-offset: 3px; }
  .dsteps code { font-size: 11.5px; }
  .dl-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 24px; }
  .req-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-left: auto; }
  .req-chips span { font: 12px "Geist Mono", monospace; color: var(--muted); background: var(--soft); border-radius: 6px; padding: 3px 8px; }
  .dl-note { margin-top: 18px; font-size: 14px; }
  .dl-note a { text-decoration: underline; text-underline-offset: 3px; }

  /* lightbox */
  dialog { border: 0; padding: 0; background: transparent; max-width: min(1280px, 94vw); width: 100%; }
  dialog::backdrop { background: rgba(21,19,28,.72); backdrop-filter: blur(4px); }
  dialog img { width: 100%; border-radius: 12px; box-shadow: 0 30px 80px rgba(0,0,0,.4); }
  dialog p { color: #fff; text-align: center; margin-top: 12px; font-size: 14px; }
  dialog button { position: fixed; top: 16px; right: 16px; width: 40px; height: 40px; border-radius: 50%; border: 0; background: #fff; cursor: pointer; font-size: 20px; }

  /* reveal */
  .rv { opacity: 0; transform: translateY(14px); transition: opacity .7s var(--swift), transform .7s var(--swift); }
  .rv.in { opacity: 1; transform: none; }
  .hero .rv { animation: up .7s var(--swift) both; opacity: 1; transform: none; }
  .hero .rv.d1 { animation-delay: .12s; }
  @keyframes up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
  @media (prefers-reduced-motion: reduce) { .rv, .hero .rv { opacity: 1; transform: none; animation: none; transition: none; } html { scroll-behavior: auto; } }

/* docs pages: setup guide and privacy */
.doc-hero { border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.doc-hero .wrap { position: relative; padding-top: 64px; padding-bottom: 56px; }
.doc-hero h1 { font-size: clamp(36px, 5vw, 52px); }
.doc-hero .lead { margin-top: 18px; max-width: 680px; }
.doc { display: grid; gap: 48px; padding-top: 56px; padding-bottom: 96px; }
@media (min-width: 1024px) { .doc { grid-template-columns: 220px 1fr; } }
.toc { position: sticky; top: 88px; align-self: start; display: none; font-size: 14px; }
@media (min-width: 1024px) { .toc { display: grid; gap: 4px; } }
.toc a { text-decoration: none; color: var(--muted); padding: 5px 10px; border-radius: 8px; }
.toc a:hover { background: var(--soft); color: var(--ink); }
.prose { max-width: 760px; min-width: 0; overflow-wrap: anywhere; }
.prose h2 { font-size: 28px; margin: 56px 0 14px; scroll-margin-top: 90px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 28px 0 8px; }
.prose p, .prose li { color: var(--fg2); font-size: 16px; line-height: 1.7; }
.prose p + p { margin-top: 12px; }
.prose ol, .prose ul { padding-left: 22px; margin: 10px 0; display: grid; gap: 8px; }
.prose a { color: var(--ember-ink); text-underline-offset: 3px; }
.prose code { font-size: 13.5px; }
.prose table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; color: var(--fg2); }
.prose th { color: var(--ink); font-weight: 600; }
.prose pre { background: var(--ink); color: #f4f3f6; border-radius: 12px; padding: 14px 16px; overflow-x: auto; font: 13.5px/1.6 "Geist Mono", monospace; margin: 12px 0; }
.prose pre code { font-size: inherit; color: inherit; background: none; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
pre.cmd { background: var(--ink); color: #f4f3f6; border-radius: 12px; padding: 14px 16px; overflow-x: auto; font: 13.5px/1.6 "Geist Mono", monospace; margin: 12px 0; }
.note { border: 1px solid var(--line); background: var(--card); border-left: 3px solid var(--ember); border-radius: 10px; padding: 14px 16px; margin: 16px 0; font-size: 15px; color: var(--fg2); }
.note b { color: var(--ink); }
.os-tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--soft); border-radius: 12px; margin: 6px 0 18px; flex-wrap: wrap; }
.os-tabs button { border: 0; background: transparent; font: 500 14px Geist, sans-serif; padding: 8px 14px; border-radius: 9px; cursor: pointer; color: var(--muted); }
.os-tabs button[aria-selected="true"] { background: var(--card); color: var(--ink); box-shadow: var(--shadow); }
[data-os-panel][hidden] { display: none; }
.req { display: grid; gap: 10px; margin: 14px 0; }
@media (min-width: 640px) { .req { grid-template-columns: 1fr 1fr; } }
.req div { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font-size: 14.5px; color: var(--fg2); }
.req b { display: block; color: var(--ink); }

/* donate page */
.donate { display: grid; gap: 20px; padding-top: 48px; padding-bottom: 96px; }
@media (min-width: 900px) { .donate { grid-template-columns: 7fr 5fr; align-items: start; } }
.stack-col { display: grid; gap: 20px; min-width: 0; }
.donate h2 { font-size: 22px; margin-bottom: 12px; }
.steps-list { display: grid; gap: 10px; padding-left: 20px; margin: 0 0 20px; color: var(--fg2); }
.steps-list .btn { margin-left: 8px; vertical-align: middle; }
.mono { font-family: "Geist Mono", monospace; }
.small-print { font-size: 13.5px; margin-top: 16px; }
.pay-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.pay-head h2 { margin: 0; }
.bkash { height: 44px; width: auto; }
.bank-logo { width: 16px; height: 16px; margin-right: 7px; vertical-align: -2px; }
.checks svg.gh { color: var(--ink); }
.bank { margin: 14px 0 0; display: grid; }
.bank div { display: grid; grid-template-columns: 150px 1fr; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); font-size: 15px; }
.bank dt { color: var(--muted); }
.bank dd { margin: 0; overflow-wrap: anywhere; }
.bank .btn { margin-left: 8px; vertical-align: middle; }
@media (max-width: 520px) { .bank div { grid-template-columns: 1fr; gap: 2px; } }

/* intro video */
.intro-video { max-width: 1040px; margin: 0 auto; }
.lang-switch { display: flex; justify-content: center; gap: 6px; margin: -12px auto 18px; }
.lang-switch button { font: inherit; font-size: 14px; font-weight: 500; padding: 7px 16px; border-radius: 99px; border: 1px solid var(--line); background: var(--card); color: var(--muted); cursor: pointer; }
.lang-switch button[aria-pressed="true"] { background: var(--ink); color: var(--card); border-color: var(--ink); }
.intro-video video { display: block; width: 100%; height: auto; background: #111; }