:root{
  --navy:#0b2a6f; --navy2:#07194a; --yellow:#ffc400; --red:#e11d2e; --green:#16a34a;
  --ink:#111827; --muted:#5b6475; --bg:#f4f6fb; --card:#fff; --line:#e3e7f0;
  --r:14px; --shadow:0 6px 20px rgba(11,42,111,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Hind Siliguri','Noto Sans Bengali','Kalpurush',system-ui,sans-serif;font-size:17px;line-height:1.6;color:var(--ink);background:var(--bg);padding-bottom:76px}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{line-height:1.3;margin:0 0 .5em}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 16px}
.wrap--narrow{max-width:640px}
.muted{color:var(--muted);font-size:.9rem}
.center{text-align:center}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* top bar */
.topbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:30;box-shadow:0 2px 10px rgba(0,0,0,.2)}
.topbar__in{display:flex;align-items:center;justify-content:space-between;height:56px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;text-decoration:none}
.brand__mark{background:var(--yellow);color:var(--navy);border-radius:8px;padding:2px 8px;font-size:.95rem;font-weight:700}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:2px solid transparent;border-radius:12px;padding:10px 18px;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;transition:transform .08s,filter .15s}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.7;cursor:wait}
.btn--primary{background:var(--red);color:#fff;box-shadow:0 6px 16px rgba(225,29,46,.35)}
.btn--primary:hover{filter:brightness(1.07)}
.btn--ghost{background:#fff;color:var(--navy);border-color:var(--navy)}
.topbar .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--wa{background:#25d366;color:#053b1b}
.btn--sm{padding:6px 12px;font-size:.92rem}
.btn--lg{padding:14px 24px;font-size:1.1rem}
.btn--xl{padding:16px 24px;font-size:1.25rem}
.btn--block{display:flex;width:100%}

/* hero */
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 100%);color:#fff;padding:26px 0 34px;overflow:hidden}
.hero__in{display:grid;gap:22px}
.badge{display:inline-block;border-radius:999px;padding:3px 12px;font-size:.85rem;font-weight:700}
.badge--warn{background:var(--yellow);color:var(--navy)}
.hero h1{font-size:2rem;margin:.4em 0 .15em}
.hero__sub{font-size:1.25rem;margin:0 0 .6em}
.hero__sub strong{color:var(--yellow)}
.hero__lead{color:#d6def5;margin:0 0 16px}
.pricechip{display:inline-flex;align-items:center;gap:12px;background:#fff;color:var(--navy);border-radius:var(--r);padding:8px 16px;margin-bottom:16px}
.pricechip__amt{font-size:2.2rem;font-weight:700;color:var(--red);line-height:1}
.pricechip__lbl{font-weight:700;line-height:1.25}
.pricechip__lbl small{font-weight:500;color:var(--muted)}
.hero__cta{display:flex;flex-wrap:wrap;gap:10px}
.trust{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-wrap:wrap;gap:6px 16px;color:#cfe0ff;font-size:.95rem}
.hero__media img{border-radius:var(--r);box-shadow:0 14px 40px rgba(0,0,0,.4);border:3px solid rgba(255,255,255,.15)}

.strip{background:var(--yellow);color:#3a2a00;text-align:center;padding:12px 0;font-weight:500}

/* sections */
.sec{padding:36px 0}
.sec--alt{background:#fff}
.sec__title{font-size:1.5rem;color:var(--navy);text-align:center}
.sec__title small{font-size:.8em;color:var(--muted);font-weight:500}
.sec__sub{text-align:center;color:var(--muted);margin:0 auto 22px;max-width:640px}

.rules{display:grid;gap:20px;align-items:center}
.dims{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px;text-align:center;box-shadow:var(--shadow)}
.dims svg{width:100%;height:auto}
.dims figcaption{font-weight:700;color:var(--red)}
.rules__list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.rules__list li{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-left:5px solid var(--navy);border-radius:12px;padding:12px 14px}
.rules__list .ic{font-size:1.5rem;line-height:1.2}

.cards{display:grid;gap:14px;grid-template-columns:1fr}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:18px;text-align:center}
.card__ic{font-size:2rem}
.card h3{font-size:1.1rem;color:var(--navy);margin:.3em 0}
.card p{margin:0;color:var(--muted)}

.steps{display:grid;gap:14px;grid-template-columns:1fr}
.step{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.step img{width:100%;aspect-ratio:4/3;object-fit:cover}
.step figcaption{padding:10px 14px;font-weight:600}
.step b{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--navy);color:#fff;margin-right:8px}
.wide{width:100%;border-radius:var(--r);margin-top:18px;border:1px solid var(--line)}

.gallery{display:grid;gap:14px;grid-template-columns:1fr}
.gallery figure{margin:0;position:relative;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover}
.gallery figcaption{position:absolute;left:10px;bottom:10px;background:rgba(7,25,74,.85);color:#fff;border-radius:8px;padding:2px 10px;font-weight:600;font-size:.9rem}
.cta-row{text-align:center;margin-top:22px}

/* pricing */
.price{background:#fff;border:2px solid var(--navy);border-radius:var(--r);padding:20px;max-width:520px;margin:0 auto;box-shadow:var(--shadow)}
.price__main{display:flex;align-items:center;justify-content:space-between;gap:12px;font-weight:700;font-size:1.15rem}
.price__main strong{font-size:2.4rem;color:var(--red)}
.price__free{background:#e8f8ee;color:#0f5132;border-radius:10px;padding:10px 12px;margin:10px 0}
.ptable{width:100%;border-collapse:collapse;margin:6px 0 10px}
.ptable th,.ptable td{padding:10px 6px;border-top:1px solid var(--line);text-align:left}
.ptable td{text-align:right;font-weight:700;color:var(--navy)}

/* order form */
.sec--order{background:linear-gradient(180deg,#e9eefc,#f4f6fb)}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
.field{display:block;margin-bottom:14px}
.field>span{display:block;font-weight:600;margin-bottom:4px}
.field em{font-style:normal;color:var(--muted);font-weight:400;font-size:.88rem}
.field input,.field select,.field textarea{width:100%;font:inherit;padding:12px 14px;border:2px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(11,42,111,.15)}
.qty{display:flex;align-items:center;gap:8px}
.qty input{width:70px;text-align:center;font-weight:700;font-size:1.2rem;padding:10px 0}
.qty__btn{width:48px;height:48px;border-radius:10px;border:2px solid var(--navy);background:#fff;color:var(--navy);font-size:1.6rem;font-weight:700;cursor:pointer;line-height:1}
.qty__btn:active{background:var(--navy);color:#fff}
.summary{background:var(--bg);border:1px dashed #b9c4e6;border-radius:12px;padding:12px 14px;margin:6px 0 16px}
.summary>div{display:flex;justify-content:space-between;gap:12px;padding:5px 0}
.summary__total{border-top:2px solid var(--navy);margin-top:4px;padding-top:8px!important;font-size:1.15rem;color:var(--navy)}
.summary__total b{color:var(--red);font-size:1.3rem}
.alert{background:#fff1f2;border:1px solid #fecdd3;color:#9f1239;border-radius:12px;padding:10px 16px;margin-bottom:14px}
.alert ul{margin:0;padding-left:20px}

.faq{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy)}
.faq p{margin:8px 0 0;color:var(--muted)}

/* footer */
.footer{background:var(--navy2);color:#cfd8f3;text-align:center;padding:28px 0}
.footer__brand{font-size:1.4rem;font-weight:700;color:#fff}
.footer__phones{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px}
.footer__phones a{color:var(--yellow);font-weight:700;text-decoration:none}
.footer p{margin:.4em 0}

/* sticky mobile bar */
.stickybar{position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;gap:8px;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-top:1px solid var(--line)}
.stickybar .btn{flex:1;padding:12px 8px}
.stickybar .btn--primary{flex:2}

/* thank-you */
.tybox{padding-top:28px;padding-bottom:30px}
.tybox h1{font-size:1.5rem;color:var(--navy);text-align:center}
.tycheck{width:72px;height:72px;margin:0 auto 12px;border-radius:50%;background:var(--green);color:#fff;font-size:2.4rem;display:grid;place-items:center;box-shadow:0 8px 20px rgba(22,163,74,.35)}
.tysummary{background:#fff}
.tysummary b{text-align:right}
.plist{display:flex;flex-direction:column;gap:2px}
.typhones{margin-bottom:14px}
.typhones a{color:var(--navy)}
body.ty{padding-bottom:0}

@media (min-width:700px){
  body{padding-bottom:0}
  .stickybar{display:none}
  .hero{padding:48px 0 56px}
  .hero__in{grid-template-columns:1.05fr 1fr;align-items:center;gap:36px}
  .hero h1{font-size:2.8rem}
  .rules{grid-template-columns:1fr 1.3fr}
  .cards{grid-template-columns:repeat(4,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .gallery{grid-template-columns:1fr 1fr}
  .sec{padding:56px 0}
  .sec__title{font-size:1.9rem}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}

/* ---- form steps ---- */
.formsec{display:flex;align-items:center;gap:10px;font-size:1.2rem;color:var(--navy);margin:22px 0 4px}
.formsec:first-of-type{margin-top:0}
.formsec__sub{margin:0 0 14px}
.step-no{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--navy);color:#fff;font-size:1rem;font-weight:700;flex:none}

/* highlighted free-delivery note */
.freebox{margin:10px 0 0;padding:10px 14px;border-radius:10px;background:#fff3b0;border:2px solid var(--yellow);color:#5a4300;font-size:1.02rem;box-shadow:0 0 0 4px rgba(255,196,0,.18);animation:pulseGlow 2.2s ease-in-out infinite}
.freebox b{color:#7a3b00}
.freebox--on{background:#dcfce7;border-color:var(--green);color:#0f5132;box-shadow:0 0 0 4px rgba(22,163,74,.18);animation:none}
.freebox--on b{color:#0f5132}
@keyframes pulseGlow{50%{box-shadow:0 0 0 7px rgba(255,196,0,.32)}}

/* plate card */
.plate-card{border:2px solid var(--line);border-radius:var(--r);padding:14px 14px 4px;margin:0 0 16px;background:#fbfcff;min-inline-size:0}
.plate-card legend{padding:0 8px;font-weight:700;color:var(--navy)}
.plate-card--bad{border-color:var(--red);background:#fff7f7}
.plate-card .field select{font-size:1.05rem}
.letters{display:flex;flex-wrap:wrap;gap:6px;margin:0}
.letter{position:relative;display:block;width:calc(14.28% - 6px);min-width:40px;cursor:pointer}
.letter input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.letter span{display:grid;place-items:center;height:46px;border:2px solid var(--line);border-radius:10px;background:#fff;font-size:1.3rem;font-weight:700;line-height:1;transition:background .1s}
.letter input:checked+span{background:var(--yellow);border-color:var(--ink);box-shadow:0 2px 0 var(--ink)}
.letter input:focus-visible+span{outline:3px solid rgba(11,42,111,.4);outline-offset:1px}
.numbers{display:flex;align-items:center;gap:6px;white-space:nowrap}
.num{height:54px;font-size:1.6rem;font-weight:700;text-align:center;letter-spacing:2px;padding:0 6px!important}
.numbers .num-2{width:32%}
.numbers .num-4{width:58%}
.num-dash{width:10%;text-align:center;font-size:1.6rem;font-weight:700}
.label{margin:6px 0;font-weight:600}
.plate-wrap{position:relative;width:100%;padding-top:17.544%;margin-bottom:12px}
.plate{position:absolute;inset:0;background:#fff;border:2px solid #111;border-radius:6px;box-shadow:0 6px 18px rgba(0,0,0,.12);display:flex;align-items:center;justify-content:center;overflow:hidden}
.plate-row{white-space:nowrap;line-height:1;color:#111;font-weight:700;font-size:20px}
.plate-row .ghost{color:#c4c8d2}
.plate-row .gap{display:inline-block;width:.32em}