:root{--g:#007164;--g2:#008878;--g3:#e6f6f1;--ink:#12202b;--muted:#5b6b78;--line:#dfe9e6;--bg:#f6faf9;--orange:#ff7a00}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,"Noto Sans Bengali","Kalpurush",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
a{color:var(--g2)}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
nav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--g);text-decoration:none}
.brand img{width:34px;height:34px;border-radius:9px}
nav .links{display:flex;gap:18px;font-size:14px}
nav .links a{color:var(--ink);text-decoration:none}
nav .links a:hover{color:var(--g2)}
.hero{background:linear-gradient(135deg,#00483f,#007164 55%,#008878);color:#fff;padding:54px 0 64px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.07)}
.hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:38px;line-height:1.25;margin:0 0 12px}
.hero p{font-size:17px;opacity:.93;margin:0 0 22px}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:14px;padding:14px 22px;font-size:16px;font-weight:700;text-decoration:none;cursor:pointer}
.btn.primary{background:#fff;color:var(--g)}
.btn.orange{background:linear-gradient(90deg,#ff9a2e,var(--orange));color:#fff}
.btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.7)}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px}
.hero .soon{margin-top:12px;font-size:13px;opacity:.85}
.phone{justify-self:center;width:230px;height:430px;border-radius:34px;background:#0b1b1a;padding:10px;box-shadow:0 30px 60px rgba(0,0,0,.35)}
.phone .screen{width:100%;height:100%;border-radius:26px;background:linear-gradient(180deg,#f8fbff,#e6f6f1);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--g)}
.phone img{width:96px;height:96px;border-radius:24px;box-shadow:0 10px 24px rgba(0,113,100,.25)}
.phone b{font-size:22px}
.phone small{color:var(--muted)}
section.block{padding:46px 0}
h2.title{font-size:27px;margin:0 0 6px;color:var(--g)}
.sub{color:var(--muted);margin:0 0 24px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 6px 18px rgba(20,60,50,.05)}
.card .ic{width:44px;height:44px;border-radius:14px;background:var(--g3);color:var(--g);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:10px}
.card h3{margin:0 0 4px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.download{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:0 10px 30px rgba(0,80,70,.08)}
.download .row{display:flex;flex-wrap:wrap;gap:12px;margin:14px 0}
.download .btn.main{background:linear-gradient(90deg,var(--g),var(--g2));color:#fff}
.download .btn.alt{background:var(--g3);color:var(--g)}
.steps{counter-reset:s;list-style:none;padding:0;margin:14px 0 0}
.steps li{counter-increment:s;position:relative;padding-left:44px;margin:12px 0}
.steps li:before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--g);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
.note{background:#fff7e8;border:1px solid #ffd9a8;color:#7a4300;border-radius:14px;padding:12px 14px;font-size:14px;margin-top:14px}
.hash{font-family:Consolas,monospace;font-size:12px;word-break:break-all;color:var(--muted)}
footer{background:#0b1b1a;color:#c8d8d4;padding:34px 0;margin-top:30px;font-size:14px}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
footer a{color:#9fe0d2;text-decoration:none;display:block;margin:3px 0}
footer h4{margin:0 0 8px;color:#fff}
.page{padding:34px 0 50px}
.page h1{margin:0 0 6px;color:var(--g);font-size:30px}
.page section{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:14px 0}
.page h2{margin:0 0 8px;font-size:18px;color:var(--g)}
@media(max-width:760px){.hero .wrap{grid-template-columns:1fr}.hero h1{font-size:30px}.phone{display:none}nav .links{gap:12px;font-size:13px}}

.qrbox{display:flex;align-items:center;gap:18px;background:var(--g3);border-radius:18px;padding:14px 18px;margin:16px 0}
.qrbox img{border-radius:12px;background:#fff;padding:4px}
@media(max-width:760px){.qrbox{display:none}}