@font-face {
  font-family: "NotoBn";
  src: url("fonts/NotoSansBengali.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --green: #0b6e4f;
  --green-deep: #08523b;
  --amber: #f5b83d;
  --fg: #1b1b18;
  --muted: #5d5d55;
  --bg: #fafaf7;
  --card: #ffffff;
  --line: #e4e4dc;
  --t-green: #e3f2ea;
  --t-blue: #e3ecf8;
  --t-amber: #fdf1d6;
  --t-purple: #ece6f5;
  --t-red: #fde3e0;
  --link: #0b6e4f;
  --radius: 22px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #ecece6;
    --muted: #a8a89e;
    --bg: #12120e;
    --card: #1b1b16;
    --line: #2e2e27;
    --t-green: #17352a;
    --t-blue: #1b2a40;
    --t-amber: #3f3213;
    --t-purple: #2e2542;
    --t-red: #4a1e1b;
    --link: #7dd6b0;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 18px/1.8 "NotoBn", system-ui, -apple-system, "Segoe UI", Roboto, "Nirmala UI", sans-serif;
}
img { max-width: 100%; height: auto; }
a { color: var(--link); }
h1, h2, h3 { line-height: 1.4; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5.2vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.wrap { width: min(1080px, 100% - 2rem); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 0; background: var(--green); color: #fff; padding: .6rem 1rem; z-index: 10; }
.skip:focus { left: 0; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 6px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 5; }
.bar { display: flex; align-items: center; gap: 1rem; padding: .6rem 0; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--fg); font-weight: 700; font-size: 1.35rem; }
.brand img { width: 40px; height: 40px; }
.nav { display: flex; gap: .25rem; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.nav a { white-space: nowrap; text-decoration: none; color: var(--fg); padding: .4rem .8rem; border-radius: 999px; font-size: .95rem; }
.nav a:hover { background: var(--t-green); }
.lang { border: 2px solid var(--green); border-radius: 999px; padding: .25rem .9rem; text-decoration: none; font-weight: 700; color: var(--link); white-space: nowrap; }
.lang:hover { background: var(--t-green); }
@media (max-width: 760px) {
  .bar { flex-wrap: wrap; }
  .nav { order: 3; width: 100%; margin-left: 0; padding-bottom: .3rem; }
  .lang { margin-left: auto; }
}

/* hero */
.hero { padding: 3rem 0 2rem; }
.hero-grid { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 880px) { .hero-grid { grid-template-columns: 1.15fr .85fr; } }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 36rem; }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.5rem 0 .6rem; align-items: center; }
.btn { display: inline-block; text-decoration: none; font-weight: 700; padding: .75rem 1.4rem; border-radius: 999px; }
.btn-soon { background: var(--amber); color: #3b2a00; }
.btn-ghost { border: 2px solid var(--green); color: var(--link); }
.btn-ghost:hover { background: var(--t-green); }
.small { font-size: .9rem; color: var(--muted); }

/* real screenshots, in a simple phone frame */
.shot { width: min(300px, 100%); margin-inline: auto; border: 9px solid #1b1b18; border-radius: 38px; overflow: hidden; background: #1b1b18; box-shadow: 0 18px 40px rgba(0, 0, 0, .18); }
.shot img { display: block; width: 100%; height: auto; aspect-ratio: 720 / 1493; }
.hero-shot { width: min(290px, 100%); }
.paper { width: min(300px, 100%); margin-inline: auto; background: #fff; border: 1px solid var(--line); border-radius: 4px; box-shadow: 0 14px 34px rgba(0, 0, 0, .16); overflow: hidden; }
.paper img { display: block; width: 100%; height: auto; }
.gallery-item { align-self: start; }
/* every picture sits in a box as tall as a phone frame, so the captions line up even under the shorter paper sheet */
.stage { width: min(300px, 100%); margin: 0 auto -18px; aspect-ratio: 720 / 1443; }
.stage .shot, .stage .paper { width: 100%; }
.gallery { display: flex; gap: 1.2rem; overflow-x: auto; scroll-snap-type: x mandatory; padding: .5rem .2rem 1rem; margin-top: 1.5rem; scrollbar-width: thin; }
.gallery-item { flex: 0 0 min(72%, 300px); scroll-snap-align: center; margin: 0; }
.gallery-item figcaption { margin-top: 1.6rem; font-size: .95rem; line-height: 1.7; color: var(--muted); }
.gallery-item figcaption strong { display: block; color: var(--fg); font-size: 1.05rem; }
@media (min-width: 720px) {
  .gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; overflow: visible; padding-inline: 0; }
  .gallery-item { flex: none; }
}
@media (min-width: 1040px) {
  .gallery { grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
}

/* sections */
section { padding: 3.2rem 0; }
.tint-green { background: var(--t-green); }
.center { text-align: center; }
.stats { display: grid; gap: 1rem; margin: 1.5rem 0 1rem; }
@media (min-width: 700px) { .stats { grid-template-columns: repeat(3, 1fr); } }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem 1.3rem; }
.stat b { display: block; font-size: 1.5rem; color: var(--link); line-height: 1.4; }
.steps { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 1rem; counter-reset: step; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { counter-increment: step; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: 50%; background: var(--green); color: #fff; font-weight: 700; margin-bottom: .6rem; }
.steps h3 { margin-bottom: .3em; }
.cards { display: grid; gap: 1rem; margin-top: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.card { border-radius: var(--radius); padding: 1.4rem; }
.card img { width: 76px; height: 76px; }
@media (min-width: 900px) {
  .cards { grid-template-columns: repeat(6, 1fr); }
  .card { grid-column: span 2; }
  .card:nth-child(n + 4) { grid-column: span 3; }
}
.card h3 { margin: .5rem 0 .2rem; }
.card p { margin: 0; }
.t-message { background: var(--t-green); } .t-number { background: var(--t-blue); } .t-family { background: var(--t-amber); }
.t-hotline { background: var(--t-purple); } .t-sos { background: var(--t-red); }
.also { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem; margin: 1.5rem 0 0; }
.also li { border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: .3rem 1rem; font-size: .95rem; }
.scam-grid { display: grid; gap: 1rem; margin-top: 1.5rem; }
@media (min-width: 760px) { .scam-grid { grid-template-columns: 1fr 1fr; } }
.scam { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; }
.scam .label { display: block; font-size: .85rem; font-weight: 700; color: var(--muted); margin-top: .6rem; }
.scam .do { border-left: 4px solid var(--green); padding-left: .8rem; margin-top: .3rem; }
.checks { list-style: none; padding: 0; margin: 1.2rem 0; }
.checks li { position: relative; padding-left: 2rem; margin-bottom: .6rem; }
.checks li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--green); font-weight: 700; }
.hotline-grid { display: grid; gap: .8rem; margin-top: 1.4rem; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.hotline { display: block; text-decoration: none; text-align: center; background: var(--green); color: #fff; border-radius: var(--radius); padding: 1rem; font-weight: 700; }
.hotline span { display: block; font-size: 1.7rem; letter-spacing: .02em; }
.hotline:hover { background: var(--green-deep); }
details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: .2rem 1.1rem; margin-bottom: .7rem; }
summary { cursor: pointer; font-weight: 700; padding: .8rem 0; }
details p { color: var(--muted); }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 2rem 0 3rem; font-size: .95rem; color: var(--muted); }
.foot { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; }
.foot-note { margin-top: 1.2rem; }
.foot nav { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; }

/* privacy page */
.policy { padding: 2rem 0 3rem; max-width: 46rem; }
.policy h2 { color: var(--link); font-size: 1.2rem; margin-top: 2rem; }
.policy + .policy { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 2rem; }
.policy .meta { color: var(--muted); }

.notfound { text-align: center; padding: 5rem 0; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .site-header, .nav, .lang { display: none; } }