:root{--ink:#10213A;--mut:#4A586E;--bg:#F3F6FA;--w:#fff;--ln:#DCE2EA;--b:#1F4FE0;--bd:#1840B8;--o:#FF7A1A;--navy:#0C1A2E}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:'Plus Jakarta Sans','Hind Siliguri','Noto Sans Bengali',Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px}
a{color:inherit;text-decoration:none}img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--o);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
header{background:var(--w);border-bottom:1px solid var(--ln);position:sticky;top:0;z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:24px}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0;font-weight:500}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--b)}
.menu{display:none;background:none;border:1.5px solid var(--ln);border-radius:8px;width:44px;height:44px;font-size:22px;cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:10px;font:600 16px inherit;font-family:inherit;border:0;cursor:pointer}
.bp{background:var(--b);color:#fff}.bp:hover{background:var(--bd)}
.bo{background:var(--w);border:1.5px solid #C5CDD9}.bw{background:var(--o);color:#1A0F05}
.hero{padding:72px 0 80px;display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
h1{font-size:50px;line-height:1.2;margin:0 0 20px}h2{font-size:36px;line-height:1.25;margin:0 0 14px}h3{font-size:22px;margin:0 0 8px}
.lead{font-size:19px;color:var(--mut);max-width:640px;margin:0}
.sec{padding:80px 0}.alt{background:var(--w)}.dk{background:var(--navy);color:#fff}.dk .lead,.dk p{color:#B9C4D6}
.pg{padding:64px 0 24px}.pg h1{font-size:42px}
.g3,.g4,.g2{display:grid;gap:24px;margin-top:40px}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--w);border:1px solid var(--ln);border-radius:14px;padding:30px}.alt .card{background:var(--bg)}
.card p{color:var(--mut);margin:0 0 14px}.card ul,.list{margin:0;padding-left:20px}.card li,.list li{margin-bottom:6px}
.panel{background:var(--navy);color:#fff;border-radius:16px;padding:32px}
.panel div{padding:16px 0;border-bottom:1px solid #2B3A55}.panel div:last-child{border:0;padding-bottom:0}.panel b{display:block;font-size:20px}.panel span{color:#B9C4D6}
.step{border-top:2px solid #2B3A55;padding-top:18px}.step h3{font-size:20px}
.price{font-size:26px;font-weight:700;margin:6px 0 14px}.pop{border:2px solid var(--b)!important}.tag{background:var(--b);color:#fff;font-size:14px;padding:2px 12px;border-radius:99px;font-weight:600}
details{background:var(--w);border:1px solid var(--ln);border-radius:12px;padding:18px 22px;margin-bottom:12px}summary{font-weight:600;font-size:18px;cursor:pointer}details p{margin:10px 0 0;color:var(--mut)}
.fld{display:block;margin-bottom:14px;font-weight:500;font-size:15px}.fld input,.fld select,.fld textarea{display:block;width:100%;margin-top:6px;border:1.5px solid #C5CDD9;border-radius:10px;padding:12px 14px;font:16px inherit;font-family:inherit;background:#fff}.fld textarea{min-height:120px}
.hp{position:absolute;left:-9999px}
.art{max-width:760px}.art p{color:#2B3A55}
footer{background:var(--navy);color:#B9C4D6;padding:56px 0 28px;font-size:15px}footer h4{color:#fff;margin:0 0 12px;font-size:17px}footer a:hover{color:#fff}footer ul{list-style:none;margin:0;padding:0}footer li{margin-bottom:8px}
.fg{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}.cp{border-top:1px solid #2B3A55;margin-top:36px;padding-top:20px}
.wa{position:fixed;right:18px;bottom:18px;z-index:30;background:#25D366;color:#06260F;font-weight:700;border-radius:99px;padding:12px 20px;box-shadow:0 4px 14px rgba(0,0,0,.2)}
@media(max-width:900px){.hero,.g3,.g4,.g2,.fg{grid-template-columns:1fr}h1{font-size:34px}.pg h1{font-size:32px}h2{font-size:28px}.menu{display:block}.nav ul{display:none;position:absolute;top:72px;left:0;right:0;background:var(--w);flex-direction:column;gap:0;padding:8px 24px 16px;border-bottom:1px solid var(--ln)}.nav ul.open{display:flex}.nav ul li a{display:block;padding:12px 0}.nav .btn{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.lang{border:1.5px solid var(--ln);border-radius:8px;padding:4px 12px}