/* ===== Design tokens ===== */
:root{
  --main:#0d5c4b; --dark:#08382e; --main-2:#12856d;
  --accent:#f4a836; --accent-ink:#3b2a05;
  --bg:#fbf7ef; --soft:#e6f3ef; --sand:#f2ebdb;
  --text:#1c2a26; --muted:#465752; --line:#ddd5c2;
  --wa:#25d366; --wa-ink:#053b1c; --link:#0b6b3a;
  --serif:Georgia,"Times New Roman",serif;
  --shadow:0 14px 34px rgba(13,92,75,.12);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
body{font-family:"Segoe UI","Noto Sans Bengali","Nirmala UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  font-size:1.0625rem;line-height:1.65;background:var(--bg);color:var(--text);overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:1140px;margin:0 auto;padding:0 20px}

/* Language switch: only the active language is shown */
html[lang="en"] [lang="bn"],html[lang="bn"] [lang="en"]{display:none!important}

.skip{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px 16px;border-radius:8px;z-index:300}
.skip:focus{left:12px}
#prog{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:200}

/* ===== Header ===== */
header{position:sticky;top:0;z-index:100;background:rgba(251,247,239,.96);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:.25s}
header.scrolled{border-color:var(--line);box-shadow:0 6px 24px rgba(8,56,46,.08)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--dark);text-transform:uppercase;letter-spacing:.04em;font-size:.95rem}
.logo i{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--main),var(--main-2));color:#fff;display:grid;place-items:center;font-style:normal;flex:none}
nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);flex-direction:column;padding:6px 20px 16px;border-bottom:1px solid var(--line);box-shadow:0 16px 24px rgba(8,56,46,.1)}
nav.open{display:flex}
nav a{padding:15px 6px;border-bottom:1px solid var(--line);font-weight:700;color:var(--dark)}
nav a.active{color:var(--main)}
.right{display:flex;align-items:center;gap:8px}
.lang{display:flex;background:#ebe3d0;border-radius:999px;padding:3px}
.lang button{border:0;background:none;padding:8px 13px;min-height:40px;border-radius:999px;font-size:.85rem;font-weight:800;color:var(--muted)}
.lang button[aria-pressed="true"]{background:var(--main);color:#fff}
.burger{width:46px;height:46px;border:1px solid var(--line);background:#fff;border-radius:12px;font-size:1.4rem;color:var(--dark)}
.hide-sm{display:none}
@media(min-width:1000px){
  nav{display:flex;position:static;flex-direction:row;padding:0;border:0;box-shadow:none;background:none;gap:2px}
  nav a{border:0;padding:9px 12px;border-radius:999px;font-size:.82rem;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
  nav a:hover,nav a.active{background:var(--soft);color:var(--main)}
  .burger{display:none}
  .hide-sm{display:inline-flex}
}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;padding:13px 24px;border-radius:14px;border:2px solid transparent;font-weight:700;text-align:center;transition:transform .18s,box-shadow .18s,filter .18s}
.btn:hover{transform:translateY(-2px);filter:brightness(1.04)}
.btn-sm{min-height:44px;padding:9px 16px;font-size:.92rem}
.btn-wa{background:var(--wa);color:var(--wa-ink);box-shadow:0 8px 20px rgba(37,211,102,.32)}
.btn-main{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 20px rgba(244,168,54,.35)}
.btn-dark{background:var(--main);color:#fff}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.7)}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;color:#fff;padding:64px 0 120px;background:
  radial-gradient(700px 380px at 88% -8%,rgba(244,168,54,.35),transparent 62%),
  radial-gradient(500px 300px at -5% 105%,rgba(18,133,109,.55),transparent 65%),
  linear-gradient(160deg,var(--dark),var(--main) 75%)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.08) 1.2px,transparent 1.2px);background-size:26px 26px}
.hero-grid{position:relative;display:grid;gap:40px;align-items:center}
.badge{display:inline-flex;flex-wrap:wrap;gap:8px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.35);padding:8px 16px;border-radius:999px;font-size:.9rem;font-weight:600;margin-bottom:20px}
.hero h1{font-family:var(--serif);font-size:clamp(2.1rem,7vw,3.7rem);line-height:1.14;margin-bottom:18px}
html[lang="bn"] .hero h1,html[lang="bn"] h2{font-family:inherit;line-height:1.3}
.hero h1 mark{background:none;color:var(--accent)}
.sub{font-size:1.15rem;max-width:540px;margin-bottom:28px}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.ticks{display:flex;gap:10px 22px;flex-wrap:wrap;font-weight:600}
.ticks li::before{content:"✓";display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-size:.75rem;font-weight:900;margin-right:8px}
.wave{position:absolute;left:0;right:0;bottom:-1px;width:100%;height:60px}
.wave path{fill:var(--bg)}
.chat{background:#fff;color:var(--text);border-radius:26px;box-shadow:0 30px 60px rgba(0,0,0,.28);overflow:hidden;max-width:420px}
.chat-h{display:flex;align-items:center;gap:12px;background:var(--dark);color:#fff;padding:14px 18px}
.chat-h i{width:38px;height:38px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-style:normal;font-weight:800}
.chat-h b{display:block;font-size:.95rem;text-transform:uppercase;letter-spacing:.04em}
.chat-h small{font-size:.8rem}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#9aa;margin-right:6px}
.dot.on{background:var(--wa);box-shadow:0 0 0 4px rgba(37,211,102,.25)}
.chat-b{padding:18px;background:#efeae2;display:grid;gap:10px}
.bubble{max-width:90%;padding:10px 14px;border-radius:16px;font-size:.95rem;box-shadow:0 2px 6px rgba(0,0,0,.08);opacity:0;animation:pop .5s forwards;animation-delay:var(--d)}
.bubble.me{background:#dcf8c6;margin-left:auto;border-bottom-right-radius:4px}
.bubble.you{background:#fff;border-bottom-left-radius:4px}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media(min-width:900px){.hero{padding:88px 0 140px}.hero-grid{grid-template-columns:1.15fr .85fr}.chat{transform:rotate(1.5deg);justify-self:end}}

/* ===== Urgent strip ===== */
.urgent{background:#fff3d6;border-bottom:1px solid #f0d99a}
.urgent .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px 24px;flex-wrap:wrap;padding-top:18px;padding-bottom:18px}
.urgent .t{display:flex;gap:14px;align-items:center}
.urgent em{font-style:normal;font-size:1.8rem}
.urgent strong{display:block;color:#4a3000}
.u-sub{color:#5f4410;font-size:.95rem}

/* ===== Sections ===== */
section{padding:72px 0}
section.alt{background:var(--sand)}
.head{text-align:center;max-width:660px;margin:0 auto 44px}
.head h2{font-family:var(--serif);font-size:clamp(1.65rem,4.6vw,2.4rem);color:var(--dark);line-height:1.22;margin-bottom:12px}
.head h2::after{content:"";display:block;width:56px;height:4px;border-radius:4px;background:var(--accent);margin:14px auto 0}
.head p{color:var(--muted)}
.grid{display:grid;gap:22px}
.g3,.g4{grid-template-columns:1fr}
@media(min-width:640px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}}

.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;display:flex;flex-direction:column;transition:.25s}
.card:hover{transform:translateY(-5px);border-color:var(--main);box-shadow:var(--shadow)}
.icon{width:54px;height:54px;border-radius:16px;background:var(--soft);display:grid;place-items:center;font-size:1.6rem;margin-bottom:16px;transition:.25s}
.card:hover .icon{background:var(--accent)}
.card h3{font-size:1.12rem;color:var(--dark);margin-bottom:6px}
.card p{color:var(--muted);flex:1}
.ask{margin-top:14px;display:inline-flex;align-items:center;min-height:44px;font-weight:800;color:var(--link);text-decoration:underline;text-underline-offset:3px}
.steps{padding-top:14px}
.step{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px 24px 24px;position:relative}
.step .n{position:absolute;top:-20px;left:22px;width:42px;height:42px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-weight:900;display:grid;place-items:center;box-shadow:0 8px 16px rgba(244,168,54,.4)}
.step h3{color:var(--dark);margin-bottom:6px}
.step p{color:var(--muted);font-size:.98rem}

/* ===== Checklist ===== */
.ck{max-width:860px;margin:0 auto}
.tabs{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 14px}
.tabs button{flex:none;min-height:46px;border:2px solid var(--line);background:#fff;color:var(--muted);padding:9px 18px;border-radius:999px;font-weight:700;transition:.2s}
.tabs button:hover{border-color:var(--main);color:var(--main)}
.tabs button[aria-pressed="true"]{background:var(--main);border-color:var(--main);color:#fff}
.ck-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}
.ck-top{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--dark);margin-bottom:10px}
.ck-top span{color:var(--muted);font-weight:700;font-size:.95rem}
.bar-bg{height:10px;background:var(--soft);border-radius:10px;overflow:hidden;margin-bottom:20px}
#ck-bar{height:100%;width:0;background:linear-gradient(90deg,var(--main-2),var(--accent));transition:width .4s}
.ck-item{position:relative;display:flex;align-items:center;gap:14px;min-height:56px;padding:12px 14px;border:2px solid var(--line);border-radius:14px;margin-bottom:10px;cursor:pointer;background:#fffdf8;transition:.2s}
.ck-item:hover{border-color:var(--main)}
.ck-item input{position:absolute;opacity:0}
.ck-item .box{flex:none;width:28px;height:28px;border-radius:8px;border:2px solid #8a8370;display:grid;place-items:center;color:transparent;font-weight:900;background:#fff}
.ck-item.ok{background:var(--soft);border-color:var(--main-2)}
.ck-item.ok .box{background:var(--main);border-color:var(--main);color:#fff}
.ck-item.ok .txt{text-decoration:line-through;color:var(--muted)}
.ck-item input:focus-visible + .box{outline:3px solid var(--accent);outline-offset:2px}
.ck-done{background:#e2f6e9;color:#0b4d27;border-radius:14px;padding:12px 16px;font-weight:700;margin:6px 0 14px}
.ck-foot{display:flex;gap:14px 20px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:18px}
.ck-foot small{color:var(--muted);max-width:440px;font-size:.9rem}

.why{padding:28px;background:#fff;border:1px solid var(--line);border-radius:22px;border-top:5px solid var(--accent)}
.why em{font-style:normal;font-size:1.8rem;display:block;margin-bottom:10px}
.why h3{color:var(--dark);margin-bottom:6px}
.why p{color:var(--muted)}

/* ===== FAQ ===== */
.narrow{max-width:800px;margin:0 auto}
details{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;padding:0 22px}
details[open]{border-color:var(--main);box-shadow:var(--shadow)}
summary{font-weight:700;cursor:pointer;color:var(--dark);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 0;min-height:56px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";flex:none;width:32px;height:32px;border-radius:50%;background:var(--soft);color:var(--main);display:grid;place-items:center;font-size:1.4rem}
details[open] summary::after{content:"–";background:var(--accent);color:var(--accent-ink)}
details p{color:var(--muted);padding-bottom:18px}
.faq-more{text-align:center;margin-top:30px}
.faq-more p{font-weight:700;color:var(--dark);margin-bottom:12px}

/* ===== Contact ===== */
.contact-s{background:linear-gradient(160deg,var(--dark),var(--main));color:#fff}
.contact-s .head h2{color:#fff}
.contact-s .head p{color:#d8ebe5}
.contact-grid{display:grid;gap:28px}
@media(min-width:900px){.contact-grid{grid-template-columns:1fr 1.1fr;align-items:start}}
.cboxes{display:grid;gap:16px}
.cbox{display:block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);border-radius:20px;padding:22px;text-align:center;transition:.25s}
.cbox:hover{transform:translateY(-4px);background:rgba(255,255,255,.2)}
.cbox.big{background:var(--wa);color:var(--wa-ink);border-color:transparent;box-shadow:0 18px 40px rgba(37,211,102,.3)}
.cbox em{font-style:normal;font-size:2rem;display:block}
.cbox b{display:block;font-size:1.1rem}
.cbox small{display:block;margin-top:2px;font-size:1rem;word-break:break-word}
.cinfo{display:grid;gap:12px;color:#d8ebe5;font-size:.98rem;text-align:center;margin-top:6px}
.cinfo b{color:var(--accent);text-transform:uppercase;letter-spacing:.1em;font-size:.78rem;display:block}
.status{display:inline-flex;align-items:center;font-weight:700;color:#fff}
.priv{text-align:center;margin:26px auto 0;font-size:.92rem;color:#d8ebe5;max-width:640px}

.form{background:#fff;color:var(--text);border-radius:24px;padding:26px;box-shadow:0 24px 50px rgba(0,0,0,.25)}
.form h3{color:var(--dark);font-size:1.25rem;margin-bottom:16px}
.f-row{margin-bottom:14px}
.f-row.two{display:grid;gap:14px}
@media(min-width:560px){.f-row.two{grid-template-columns:1fr 1fr}}
.form label{display:block;font-weight:700;font-size:.95rem;margin-bottom:5px;color:var(--dark)}
.form input[type=text],.form input[type=email],.form input[type=tel],.form select,.form textarea{width:100%;min-height:50px;padding:11px 14px;border:2px solid #b9b19c;border-radius:12px;background:#fff}
.form textarea{resize:vertical}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--main);outline:3px solid rgba(244,168,54,.6);outline-offset:1px}
.form .invalid{border-color:#b3261e}
.hint{color:var(--muted);font-size:.9rem;margin-bottom:14px}
.consent{display:flex!important;gap:12px;align-items:flex-start;font-weight:500!important;font-size:.93rem!important;margin-bottom:16px!important}
.consent input{width:24px;height:24px;flex:none;margin-top:2px;accent-color:var(--main)}
.link{background:none;border:0;padding:0;color:var(--link);text-decoration:underline;font-weight:700}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
#f-status{margin-top:14px;font-weight:700;min-height:1.5em}
#f-status.ok{color:#0b5a2b}
#f-status.err{color:#a3231b}
.form .btn{width:100%}

/* ===== Footer ===== */
footer{background:var(--dark);color:#d8ebe5;padding:56px 0 110px;font-size:.95rem;border-top:4px solid var(--accent)}
.fgrid{display:grid;gap:30px}
@media(min-width:600px){.fgrid{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.fgrid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.fbrand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px}
.fbrand i{width:34px;height:34px;border-radius:10px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-style:normal}
.fcol p{max-width:280px;margin-bottom:12px}
.fcol h4{color:var(--accent);font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.2)}
.fcol a,.flink{display:block;background:none;border:0;text-align:left;color:#d8ebe5;padding:8px 0;min-height:40px;font-weight:600}
.fcol a:hover,.flink:hover{color:#fff;text-decoration:underline}
.fcol a.plain{font-weight:500;word-break:break-word}
.fbottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);display:flex;justify-content:space-between;gap:12px 28px;flex-wrap:wrap;font-size:.88rem}
.fbottom .disc{max-width:620px}
.fbottom a{font-weight:700;color:#fff;text-decoration:underline}

dialog{border:0;border-radius:20px;max-width:640px;width:calc(100% - 32px);padding:28px;margin:auto;color:var(--text);background:#fff;max-height:85vh;overflow:auto}
dialog::backdrop{background:rgba(0,0,0,.6)}
dialog h2{color:var(--dark);margin-bottom:12px;font-size:1.3rem}
dialog p{color:var(--muted);margin-bottom:10px}
dialog .btn{margin-top:10px}

/* ===== Floating buttons (kept small; footer has bottom padding) ===== */
.fab{position:fixed;right:14px;bottom:14px;z-index:110;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.fab a,.fab button{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-size:1.45rem;border:0;box-shadow:0 8px 20px rgba(0,0,0,.3);transition:transform .15s}
.fab a:hover,.fab button:hover{transform:scale(1.08)}
.fab-wa{background:var(--wa)}
.fab-call{background:var(--accent)}
#toTop{background:#fff;color:var(--dark);font-weight:900;opacity:0;pointer-events:none;transition:.25s}
#toTop.show{opacity:1;pointer-events:auto}
@media(min-width:1000px){.fab-call{display:none}}

/* ===== Scroll reveal (only when JS is on) ===== */
.js .rv{opacity:0;transform:translateY(22px);transition:opacity .6s,transform .6s}
.js .rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js .rv,.bubble{opacity:1;transform:none}
}