/* Layout: single centred column (max 1120px) of full-width bands; hero pairs copy with a live request→phone demo. */
:root {
  --bg: #f2f5f3;            /* cool mint-grey paper */
  --surface: #ffffff;
  --ink: #0e2620;           /* bottle-green ink */
  --muted: #4e6660;
  --line: #d3ddd8;
  --brand: #0d6f54;         /* deep green */
  --brand-ink: #ffffff;
  --brand-soft: #dcefe7;
  --accent: #e39a2d;        /* marigold */
  --accent-ink: #2b1a02;
  --code-bg: #0f1d19;
  --code-fg: #d7e6df;
  --code-key: #8fd6b8;
  --code-str: #f2c27a;
  --code-m: #ff9b7a;
  --chat-bg: #e6ece8;
  --bubble-out: #d4f2df;
  --bubble-in: #ffffff;
  --bubble-ink: #10221c;
  --read: #2b8cd6;
  --danger: #c4483e;
  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --f-bn: "Hind Siliguri", "Noto Sans Bengali", "Nirmala UI", "Vrinda", sans-serif;
  --f-bn-display: "Baloo Da 2", "Hind Siliguri", "Noto Sans Bengali", "Nirmala UI", sans-serif;
  --r: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1512; --surface: #12201b; --ink: #e2ede8; --muted: #9db3aa; --line: #23362f;
    --brand: #35c08f; --brand-ink: #04140e; --brand-soft: #143429; --accent: #f0b04f; --accent-ink: #251500;
    --code-bg: #08110e; --chat-bg: #0f1a16; --bubble-out: #11463a; --bubble-in: #1b2a25; --bubble-ink: #e6f1ec; --read: #5fb4f2;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1512; --surface: #12201b; --ink: #e2ede8; --muted: #9db3aa; --line: #23362f;
  --brand: #35c08f; --brand-ink: #04140e; --brand-soft: #143429; --accent: #f0b04f; --accent-ink: #251500;
  --code-bg: #08110e; --chat-bg: #0f1a16; --bubble-out: #11463a; --bubble-in: #1b2a25; --bubble-ink: #e6f1ec; --read: #5fb4f2;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--f-body); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
a { color: var(--brand); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
code { font-family: var(--f-mono); font-size: .88em; background: var(--brand-soft); color: var(--ink); padding: .1em .4em; border-radius: 5px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.08; letter-spacing: -.02em; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.9rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0; }

.wrap { max-width: 1120px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.eyebrow { font: 600 .74rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--brand); margin-bottom: 14px; }
.center { text-align: center; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 10px 18px; font: 600 .95rem/1 var(--f-body); text-decoration: none; border: 1.5px solid transparent; transition: transform .15s, background .15s; white-space: nowrap; cursor: pointer; }
.btn:hover { transform: translateY(-1px); }
.btn-lg { padding: 15px 24px; font-size: 1rem; }
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.link { color: var(--ink); text-decoration: none; font-weight: 500; }

/* nav */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--bg); }
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 24px; padding-block: 12px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font: 800 1.2rem/1 var(--f-display); color: var(--ink); text-decoration: none; letter-spacing: -.02em; }
.brand .mark { width: 30px; height: 30px; border-radius: 9px 9px 9px 3px; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-size: 1rem; }
.brand-sub { font: 500 .66rem/1 var(--f-mono); white-space: nowrap; color: var(--muted); border: 1px solid var(--line); padding: 3px 5px; border-radius: 5px; letter-spacing: .06em; }
.nav-links { display: flex; gap: 22px; margin-left: 12px; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 16px; }

/* hero */
.hero { padding-block: 56px 64px; }
.hero-in { display: grid; grid-template-columns: 1.02fr 1fr; gap: 48px; align-items: center; }
.hero-copy { min-width: 0; display: grid; gap: 20px; }
.lede { font-size: 1.12rem; color: var(--muted); max-width: 34em; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.ticks { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: .92rem; }
.ticks li::before { content: "✓"; color: var(--brand); font-weight: 700; margin-right: 6px; }

.demo { position: relative; min-width: 0; display: grid; grid-template-columns: 1fr; padding-right: 92px; padding-bottom: 40px; }
.term { background: var(--code-bg); color: var(--code-fg); border-radius: var(--r); overflow: hidden; box-shadow: 0 24px 48px -24px rgba(6, 30, 22, .45); min-width: 0; }
.term-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid rgba(255, 255, 255, .07); font: 500 .72rem/1 var(--f-mono); color: #8aa69a; }
.term-bar span { width: 9px; height: 9px; border-radius: 50%; background: #2f4a40; }
.term-bar b { margin-left: 8px; font-weight: 500; }
.term-bar2 { border-top: 1px solid rgba(255, 255, 255, .07); justify-content: space-between; }
.term-bar2 b { margin-left: 0; }
.lat { color: var(--code-key); }
.code { margin: 0; padding: 14px 16px; font: 400 .82rem/1.65 var(--f-mono); overflow-x: auto; white-space: pre; }
.code-res { white-space: pre-wrap; }
.c-k { color: var(--code-key); } .c-s { color: var(--code-str); } .c-m { color: var(--code-m); font-weight: 500; }

.phone { position: absolute; right: 0; bottom: 0; width: 236px; background: var(--chat-bg); border: 6px solid var(--ink); border-radius: 30px; overflow: hidden; box-shadow: 0 30px 60px -28px rgba(6, 30, 22, .55); }
.phone-top { display: flex; gap: 9px; align-items: center; background: var(--brand); color: var(--brand-ink); padding: 12px 12px 10px; }
.phone-top small { display: block; font-size: .68rem; opacity: .85; }
.phone-top b { font-size: .85rem; }
.avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-weight: 700; font-size: .8rem; }
.chat { padding: 12px 10px 14px; display: flex; flex-direction: column; gap: 8px; min-height: 190px; }
.day { align-self: center; font-size: .66rem; color: var(--muted); background: var(--surface); padding: 2px 8px; border-radius: 6px; }
.bubble { max-width: 88%; font-size: .8rem; line-height: 1.4; padding: 7px 9px; border-radius: 10px; color: var(--bubble-ink); box-shadow: 0 1px 0 rgba(0, 0, 0, .06); }
.bubble.in { background: var(--bubble-in); align-self: flex-start; border-top-left-radius: 3px; }
.bubble.out { background: var(--bubble-out); align-self: flex-end; border-top-right-radius: 3px; animation: pop .5s .4s both cubic-bezier(.2, .9, .3, 1.3); }
@keyframes pop { from { transform: translateY(8px) scale(.96); opacity: .3; } }
.meta { display: block; text-align: right; font-size: .62rem; color: var(--muted); margin-top: 2px; }
.ticks-ic { letter-spacing: -.25em; font-weight: 700; margin-left: 2px; }
.ticks-ic[data-s="4"] { color: var(--read); }
.status-legend { font: .7rem/1 var(--f-mono); color: var(--muted); padding: 0 12px 12px; }
.status-legend code { background: var(--surface); }

/* bands & sections */
.band { border-block: 1px solid var(--line); background: var(--surface); }
.logos-in { display: flex; align-items: center; gap: 22px; padding-block: 16px; flex-wrap: wrap; }
.logos-in p { font: 600 .72rem/1 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.logos-in ul { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; }
.logos-in li { border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; font-size: .88rem; }
.section { padding-block: 84px; }
.section.alt { background: var(--surface); border-block: 1px solid var(--line); }
.sec-head { display: grid; gap: 12px; margin-bottom: 40px; max-width: 46rem; }
.sec-head.center { margin-inline: auto; }
.sec-lede { color: var(--muted); font-size: 1.05rem; }

.types { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.types article { background: var(--surface); padding: 22px 20px; display: grid; gap: 8px; align-content: start; }
.types p { color: var(--muted); font-size: .92rem; }
.types code { justify-self: start; font-size: .76rem; }

.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.steps li { counter-increment: s; display: grid; gap: 8px; align-content: start; border-top: 2px solid var(--ink); padding-top: 16px; }
.steps li::before { content: "0" counter(s); font: 600 .8rem/1 var(--f-mono); color: var(--brand); }
.steps p { color: var(--muted); font-size: .94rem; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-rev .split-copy { order: 2; }
.split-copy { min-width: 0; display: grid; gap: 16px; }
.split-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1.04rem; }
.list { padding: 0; margin: 0; list-style: none; display: grid; gap: 10px; }
.list li { padding-left: 26px; position: relative; }
.list li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 12px; height: 7px; border-left: 2.5px solid var(--brand); border-bottom: 2.5px solid var(--brand); transform: rotate(-45deg); }

.bc-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; display: grid; gap: 16px; box-shadow: 0 24px 50px -30px rgba(6, 30, 22, .35); min-width: 0; }
.bc-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.pill { font: 600 .72rem/1 var(--f-mono); padding: 5px 9px; border-radius: 999px; }
.pill-live { background: var(--brand-soft); color: var(--brand); }
.pill-live::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); margin-right: 6px; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .25; } }
.bc-msg { background: var(--bubble-out); color: var(--bubble-ink); padding: 10px 12px; border-radius: 10px 3px 10px 10px; font-size: .92rem; }
.bc-msg mark { background: var(--accent); color: var(--accent-ink); border-radius: 4px; padding: 0 3px; font-family: var(--f-mono); font-size: .82em; }
.bc-bar { height: 10px; background: var(--brand-soft); border-radius: 99px; overflow: hidden; display: flex; }
.bc-ok { width: 65%; background: var(--brand); }
.bc-fail { width: 1%; background: var(--danger); }
.bc-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin: 0; }
.bc-stats dt { font-size: .74rem; color: var(--muted); }
.bc-stats dd { margin: 0; font: 700 1.4rem/1.2 var(--f-display); font-variant-numeric: tabular-nums; }
.bc-note { font-size: .72rem; color: var(--muted); }

.codes { border-collapse: collapse; width: 100%; max-width: 360px; font-size: .92rem; }
.codes caption { text-align: left; font: 600 .72rem/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); padding-bottom: 8px; }
.codes td { padding: 6px 8px; border-top: 1px solid var(--line); }

/* pricing */
.toggle { display: flex; width: max-content; margin: 0 auto 30px; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 4px; }
.toggle button { border: 0; background: none; font: 600 .92rem/1 var(--f-body); padding: 10px 18px; border-radius: 999px; color: var(--muted); cursor: pointer; }
.toggle button.on { background: var(--ink); color: var(--bg); }
.toggle .save { font-family: var(--f-mono); font-size: .76rem; color: var(--accent); margin-left: 4px; }
.plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; align-items: stretch; }
.plan { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 24px 20px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.plan.pop { border: 2px solid var(--brand); }
.plan .tag { position: absolute; top: -11px; left: 20px; background: var(--brand); color: var(--brand-ink); font: 600 .68rem/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; padding: 5px 8px; border-radius: 6px; }
.plan .nums { font: 600 .82rem/1 var(--f-mono); color: var(--brand); }
.plan .amt { font: 800 2.3rem/1 var(--f-display); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.plan .amt small { font: 500 .9rem var(--f-body); color: var(--muted); letter-spacing: 0; }
.plan .billed { font-size: .84rem; color: var(--muted); min-height: 1.3em; }
.plan .per { font: 500 .8rem/1.2 var(--f-mono); color: var(--muted); }
.plan ul { list-style: none; padding: 0; margin: 4px 0 8px; display: grid; gap: 6px; font-size: .9rem; }
.plan ul li::before { content: "✓"; color: var(--brand); font-weight: 700; margin-right: 7px; }
.plan ul li.no { color: var(--muted); text-decoration: line-through; }
.plan ul li.no::before { content: "✕"; color: inherit; }
.plan .btn { margin-top: auto; }
.trial-note { text-align: center; color: var(--muted); margin-top: 22px; font-size: .94rem; }
.pay { margin: 34px auto 0; max-width: 680px; }
.pay img { display: block; width: 100%; border-radius: 12px; }

/* faq */
.faq-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.faq { display: grid; gap: 10px; min-width: 0; }
.faq details { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 4px 18px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 500 1.3rem/1 var(--f-mono); color: var(--brand); }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding-bottom: 16px; color: var(--muted); }

.cta-band { background: var(--brand); color: var(--brand-ink); }
.cta-in { padding-block: 56px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-in h2 { color: var(--brand-ink); max-width: 18em; }

.foot { padding-block: 40px 56px; }
.foot-in { display: grid; grid-template-columns: 1fr auto; gap: 18px 40px; align-items: start; }
.foot-in > div p { color: var(--muted); font-size: .9rem; margin-top: 10px; }
.foot nav { display: flex; gap: 22px; flex-wrap: wrap; }
.foot nav a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.legal { grid-column: 1 / -1; color: var(--muted); font-size: .8rem; border-top: 1px solid var(--line); padding-top: 18px; }

@media (max-width: 980px) {
  .hero-in, .split, .faq-wrap { grid-template-columns: 1fr; }
  .split-rev .split-copy { order: 0; }
  .types { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 26px; }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .hero { padding-block: 36px 44px; }
  .section { padding-block: 60px; }
  .demo { padding-right: 0; padding-bottom: 0; gap: 16px; }
  .phone { position: relative; width: 100%; max-width: 300px; justify-self: center; }
  .types, .steps, .plans { grid-template-columns: 1fr; }
  .nav-cta .link { display: none; }
  .bc-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-in { grid-template-columns: 1fr; }
}

/* Bangla (default language) */
html:lang(bn) body { font-family: var(--f-bn); line-height: 1.75; }
html:lang(bn) h1, html:lang(bn) h2, html:lang(bn) h3 { font-family: var(--f-bn-display); letter-spacing: 0; line-height: 1.25; }
html:lang(bn) .btn, html:lang(bn) .toggle button, html:lang(bn) .faq summary { font-family: var(--f-bn); }
html:lang(bn) .eyebrow, html:lang(bn) .logos-in p, html:lang(bn) .plan .nums, html:lang(bn) .plan .per, html:lang(bn) .plan .tag, html:lang(bn) .pill, html:lang(bn) .codes caption { font-family: var(--f-bn); letter-spacing: .02em; text-transform: none; }
html:lang(bn) .plan .amt { font-family: var(--f-bn-display); }
.lang { display: flex; border: 1px solid var(--line); border-radius: 999px; padding: 2px; background: var(--surface); }
.lang button { border: 0; background: none; font: 600 .8rem/1 var(--f-bn); padding: 6px 10px; border-radius: 999px; color: var(--muted); cursor: pointer; }
.lang button.on { background: var(--ink); color: var(--bg); }
@media (max-width: 560px) { .nav-cta { gap: 8px; } .nav-cta .btn { padding: 9px 12px; font-size: .85rem; } }
html:lang(bn) h1 { font-size: clamp(2rem, 4.4vw, 3.3rem); }
/* The tagline beside the logo needs room; on narrow screens the logo stands alone. */
@media (max-width: 720px) { .nav .brand-sub { display: none; } }