/* ============================================================================
 * বাঙলা ব্রাউজার — site v2
 * Fresh look: white embossed canvas · Apple-grade frosted glassmorphism
 * Palette: Bangladesh flag green (primary/secure) + red (emotion) on white
 * Type: Hind Siliguri (Bangla) + SF-Pro/system grotesque (Latin)
 * Motion: gentle float, gradient drift, scroll-reveal. Self-contained fonts.
 * ========================================================================== */

@font-face{font-family:'Hind Siliguri';font-weight:400;font-display:swap;src:url('fonts/HindSiliguri-Regular.woff2') format('woff2')}
@font-face{font-family:'Hind Siliguri';font-weight:500;font-display:swap;src:url('fonts/HindSiliguri-Medium.woff2') format('woff2')}
@font-face{font-family:'Hind Siliguri';font-weight:600;font-display:swap;src:url('fonts/HindSiliguri-SemiBold.woff2') format('woff2')}
@font-face{font-family:'Hind Siliguri';font-weight:700;font-display:swap;src:url('fonts/HindSiliguri-Bold.woff2') format('woff2')}

:root{
  --green:#006a4e; --green-2:#02845f; --green-d:#04543e; --red:#e8112d; --red-2:#f42a41;
  --gold:#e8a33d;
  --ink:#0f2018; --body:#46564e; --faint:#7d8b83;
  --paper:#eef2ef; --paper-2:#e6ebe7; --white:#ffffff;
  --glass:rgba(255,255,255,.62); --glass-2:rgba(255,255,255,.78); --glass-line:rgba(255,255,255,.9);
  --bn:'Hind Siliguri',system-ui,sans-serif;
  --sans:-apple-system,BlinkMacSystemFont,'SF Pro Display','Segoe UI',system-ui,Roboto,Helvetica,Arial,sans-serif;
  --maxw:1160px; --r:22px;
  --emboss:-7px -7px 16px rgba(255,255,255,.9), 8px 9px 22px rgba(11,60,42,.10);
  --emboss-in:inset 3px 3px 7px rgba(11,60,42,.10), inset -3px -3px 7px rgba(255,255,255,.85);
  --glass-shadow:0 18px 50px -22px rgba(6,72,52,.30), 0 2px 0 rgba(255,255,255,.6) inset;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{
  font-family:var(--bn);color:var(--ink);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;overflow-x:hidden;position:relative;
  background:var(--paper);
}
/* embossed + colour-bloom canvas (gives the glass something to frost) */
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background:
  radial-gradient(900px 600px at 84% -6%,rgba(0,106,78,.16),transparent 60%),
  radial-gradient(760px 620px at 4% 16%,rgba(2,132,95,.12),transparent 60%),
  radial-gradient(680px 560px at 78% 96%,rgba(232,17,45,.08),transparent 62%),
  linear-gradient(180deg,#f3f7f4,#e9efeb 60%,#eef3ef);}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='38' height='38' viewBox='0 0 38 38'><path d='M19 2L36 19 19 36 2 19z' fill='none' stroke='%23006a4e' stroke-width='.5' opacity='.06'/></svg>")}
:lang(en),.en,code,kbd{font-family:var(--sans)}
a{color:var(--green-2);text-decoration:none}
a:hover{color:var(--green)}
:focus-visible{outline:2.5px solid var(--green);outline-offset:3px;border-radius:6px}
img,svg{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.14;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---- nav (frosted) ------------------------------------------------------ */
.nav{position:sticky;top:14px;z-index:50;margin:14px auto 0;max-width:calc(var(--maxw) + 28px);
  padding:0 14px}
.nav .bar{display:flex;align-items:center;gap:16px;height:62px;padding:0 12px 0 18px;border-radius:18px;
  background:var(--glass-2);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border:1px solid var(--glass-line);box-shadow:var(--glass-shadow)}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:19px;color:var(--ink)}
.brand img{width:30px;height:30px;border-radius:9px}
.brand .tld{color:var(--green);font-family:var(--sans);font-weight:600;font-size:11px;
  letter-spacing:.14em;text-transform:uppercase;opacity:.75;margin-top:3px;align-self:flex-start}
.nav nav{margin-left:auto;display:flex;gap:4px;align-items:center}
.nav nav a{color:var(--body);font-size:15px;padding:9px 13px;border-radius:11px;transition:.2s}
.nav nav a:hover{color:var(--green);background:rgba(0,106,78,.08)}
.nav .lang{font-family:var(--sans);font-size:13px;border:1px solid rgba(0,106,78,.22);border-radius:999px;padding:6px 12px;color:var(--green)}

/* ---- buttons ------------------------------------------------------------ */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--bn);font-weight:600;font-size:16px;
  padding:13px 24px;border-radius:14px;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .16s ease,box-shadow .25s ease,background .25s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--green-2),var(--green-d));color:#fff;
  box-shadow:0 14px 30px -12px rgba(0,106,78,.55),0 1px 0 rgba(255,255,255,.25) inset}
.btn-primary:hover{color:#fff;box-shadow:0 18px 40px -12px rgba(0,106,78,.7)}
.btn-glass{background:var(--glass-2);color:var(--ink);border-color:var(--glass-line);backdrop-filter:blur(10px);
  box-shadow:var(--emboss)}
.btn-glass:hover{color:var(--green);border-color:rgba(0,106,78,.3)}
.btn .sub{font-family:var(--sans);font-size:12px;opacity:.78;font-weight:500}

/* ---- glass card / emboss ------------------------------------------------ */
.glass{background:var(--glass);backdrop-filter:saturate(170%) blur(22px);-webkit-backdrop-filter:saturate(170%) blur(22px);
  border:1px solid var(--glass-line);border-radius:var(--r);box-shadow:var(--glass-shadow)}
.emboss{background:linear-gradient(145deg,#f4f8f5,#e7ece8);border-radius:var(--r);box-shadow:var(--emboss)}

/* ---- hero --------------------------------------------------------------- */
.hero{position:relative;padding:64px 0 26px}
.hero .wrap{display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:9px;font-family:var(--sans);font-size:12.5px;font-weight:600;
  letter-spacing:.06em;color:var(--green-d);background:var(--glass-2);border:1px solid var(--glass-line);
  padding:8px 15px;border-radius:999px;box-shadow:var(--emboss)}
.pill .flag{width:18px;height:12px;border-radius:2px;background:
  radial-gradient(circle at 38% 50%,var(--red) 0 4.4px,transparent 4.6px),var(--green);box-shadow:0 1px 2px rgba(0,0,0,.15)}
.hero h1{font-size:clamp(40px,5.6vw,68px);margin:22px 0 18px;letter-spacing:-.03em;line-height:1.05}
.hero h1 .g{background:linear-gradient(120deg,var(--green-2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lede{font-size:19.5px;color:var(--body);max-width:38ch}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center}
.hero .meta{margin-top:18px;font-family:var(--sans);font-size:13px;color:var(--faint)}
.hero .meta b{color:var(--body)}

/* hero art: floating glass browser w/ flag + shield */
.heroart{position:relative;display:grid;place-items:center;min-height:420px}
.heroart .float{animation:float 7s ease-in-out infinite}
.heroart .float.b{animation-duration:9s;animation-delay:-2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.heroart .glasscard{position:absolute}

/* ---- section scaffolding ----------------------------------------------- */
section.band{padding:64px 0;position:relative}
.sec-head{text-align:center;max-width:680px;margin:0 auto 44px}
.kicker{font-family:var(--sans);font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--green-2)}
.sec-head h2{font-size:clamp(28px,3.7vw,42px);margin:12px 0 12px}
.sec-head p{color:var(--body);font-size:18px}

/* ---- features ----------------------------------------------------------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature{padding:26px;transition:transform .25s ease,box-shadow .25s ease}
.feature:hover{transform:translateY(-5px)}
.feature .ic{width:64px;height:64px;margin-bottom:16px}
.feature h3{font-size:20px;margin-bottom:8px}
.feature p{color:var(--body);font-size:15.5px}

/* ---- story / patriotism band ------------------------------------------- */
.story{position:relative;overflow:hidden}
.story .glass{padding:46px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.story h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:14px}
.story p{color:var(--body);font-size:17px;margin-bottom:12px}
.story .em{color:var(--red);font-weight:600}

/* ---- trust -------------------------------------------------------------- */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.trust .t{padding:26px 20px;text-align:center}
.trust .n{font-size:34px;font-weight:700;background:linear-gradient(120deg,var(--green-2),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.trust .l{color:var(--body);font-size:14.5px;margin-top:4px}

/* ---- download ----------------------------------------------------------- */
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.dl-card{padding:26px;display:flex;flex-direction:column;gap:8px}
.dl-card .os{display:flex;align-items:center;gap:12px}
.dl-card .os .glyph{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:23px;
  background:linear-gradient(145deg,#f4f8f5,#e7ece8);box-shadow:var(--emboss)}
.dl-card .os h3{font-size:20px}
.dl-card .os .v{font-family:var(--sans);font-size:12px;color:var(--faint);margin-left:auto}
.dl-card p{color:var(--body);font-size:14.5px;min-height:42px}
.dl-card .row{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.dl-card .note{font-family:var(--sans);font-size:12px;color:var(--faint);margin-top:8px}
.dl-card code{background:rgba(0,106,78,.08);padding:2px 7px;border-radius:6px;font-size:13px;color:var(--green-d)}
.distros{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.distros span{font-family:var(--sans);font-size:11.5px;color:var(--body);background:var(--glass-2);
  border:1px solid var(--glass-line);padding:4px 10px;border-radius:8px}

/* ---- callout / countdown ------------------------------------------------ */
.callout{display:flex;gap:14px;align-items:flex-start;padding:18px 22px;color:var(--body);font-size:15px;
  border-left:4px solid var(--green)}
.callout.red{border-left-color:var(--red)}
.callout b{color:var(--ink)}
.countdown{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:8px 0}
.countdown .u{min-width:96px;padding:18px 10px;text-align:center}
.countdown .u .num{font-family:var(--sans);font-size:42px;font-weight:700;line-height:1;
  background:linear-gradient(120deg,var(--green-2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.countdown .u .lab{font-family:var(--sans);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);margin-top:8px}

/* ---- legal docs (light) ------------------------------------------------- */
.doc-hero{padding:30px 0 14px}
.doc-hero .wrap{max-width:880px}
.doc-hero .kicker{color:var(--green-2)}
.doc-hero h1{font-size:clamp(30px,4vw,46px);margin:10px 0 10px}
.doc-hero .updated{font-family:var(--sans);font-size:13px;color:var(--faint)}
.doc-wrap{max-width:980px;margin:0 auto;padding:30px 26px 70px;display:grid;grid-template-columns:236px 1fr;gap:42px;align-items:start}
.doc-toc{position:sticky;top:96px;font-family:var(--sans);font-size:13.5px;padding:18px;border-radius:18px}
.doc-toc .lbl{text-transform:uppercase;letter-spacing:.12em;font-size:11px;color:var(--faint);margin-bottom:10px}
.doc-toc a{display:block;color:var(--body);padding:6px 0 6px 12px;border-left:2px solid transparent}
.doc-toc a:hover{color:var(--green);border-left-color:var(--green)}
.doc{font-size:16.5px}
.doc h2{font-size:23px;margin:32px 0 12px;scroll-margin-top:96px;color:var(--ink)}
.doc h2:first-child{margin-top:0}
.doc h3{font-size:18px;margin:22px 0 8px;color:var(--green-d)}
.doc p{margin:0 0 14px;color:#3c4b43}
.doc ul,.doc ol{margin:0 0 16px;padding-left:22px;color:#3c4b43}
.doc li{margin:7px 0}
.doc strong{color:var(--ink)}
.doc a{text-decoration:underline;text-underline-offset:2px}
.doc table{width:100%;border-collapse:separate;border-spacing:0;margin:8px 0 20px;font-size:14.5px;font-family:var(--sans);
  border:1px solid rgba(0,106,78,.16);border-radius:14px;overflow:hidden}
.doc th,.doc td{text-align:left;padding:11px 13px;border-bottom:1px solid rgba(0,106,78,.12);vertical-align:top}
.doc tr:last-child td{border-bottom:none}
.doc th{background:rgba(0,106,78,.08);color:var(--green-d);font-weight:600}
.doc td{color:var(--body)}
.doc .lead{font-size:18px;color:var(--body)}
.legalnote{font-family:var(--sans);font-size:13px;color:var(--faint);border-top:1px solid rgba(0,106,78,.14);margin-top:34px;padding-top:16px}

/* ---- footer ------------------------------------------------------------- */
.footer{margin-top:40px;padding:18px 14px 0}
.footer .inner{max-width:calc(var(--maxw) + 28px);margin:0 auto;border-radius:24px 24px 0 0;padding:50px 34px 30px}
.footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px}
.footer .brand{margin-bottom:12px}
.footer .blurb{color:var(--body);font-size:14.5px;max-width:34ch}
.footer h4{font-family:var(--sans);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:12px}
.footer ul{list-style:none}
.footer li{margin:8px 0}
.footer a{color:var(--body);font-size:15px}
.footer a:hover{color:var(--green)}
.footer .base{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-top:36px;
  padding-top:20px;border-top:1px solid rgba(0,106,78,.14);font-family:var(--sans);font-size:13px;color:var(--faint)}
.footer .base .heart{color:var(--red)}

/* ---- responsive --------------------------------------------------------- */
@media(max-width:920px){
  .hero .wrap{grid-template-columns:1fr;gap:30px}.heroart{min-height:320px;order:-1}
  .features{grid-template-columns:1fr 1fr}.trust{grid-template-columns:1fr 1fr}
  .dl-grid{grid-template-columns:1fr}.story .glass{grid-template-columns:1fr}
  .doc-wrap{grid-template-columns:1fr}.doc-toc{position:static}
  .footer .cols{grid-template-columns:1fr 1fr}.nav nav{display:none}
}
@media(max-width:560px){
  body{font-size:16px}.features,.trust,.footer .cols{grid-template-columns:1fr}
  .btn{width:100%;justify-content:center}.hero .cta{flex-direction:column;align-items:stretch}
  .countdown .u{min-width:72px}
}