:root{--bg:#060914;--bg2:#0b1226;--card:#0d1530;--line:rgba(148,163,255,.16);--tx:#e8ecff;--mut:#98a2c8;--cy:#22d3ee;--bl:#3b82f6;--vi:#8b5cf6;--ok:#34d399;--warn:#fbbf24;--bad:#f87171;--grad:linear-gradient(135deg,#22d3ee,#3b82f6 50%,#8b5cf6);--r:18px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--tx);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans Bengali",sans-serif;background-image:radial-gradient(900px 520px at 88% -8%,rgba(139,92,246,.22),transparent 60%),radial-gradient(800px 520px at -10% 6%,rgba(34,211,238,.13),transparent 60%);background-repeat:no-repeat}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em}
p{margin:0 0 1em}
.wrap{width:min(1160px,100% - 32px);margin-inline:auto}
.narrow{max-width:760px}
.center{text-align:center}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:#000;padding:8px 12px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--cy);outline-offset:2px}
.fine{font-size:.85rem;color:var(--mut)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,9,20,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.logo{flex:none;width:30px;height:30px;background:var(--grad);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);box-shadow:0 0 18px rgba(59,130,246,.6)}
.brand-t{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.brand-t b{font-size:1.05rem;letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-t small{color:var(--mut);font-size:.72rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#nav{display:flex;gap:4px;margin-left:auto}
#nav a{padding:8px 14px;border-radius:999px;color:var(--mut);transition:.2s}
#nav a:hover{color:var(--tx);background:rgba(148,163,255,.1)}
.actions{display:flex;gap:6px}
.icon-btn{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(148,163,255,.06);color:var(--tx);cursor:pointer;transition:.2s}
.icon-btn:hover{border-color:var(--cy);box-shadow:0 0 14px rgba(34,211,238,.25)}
.menu-btn{display:none}
@media(max-width:760px){
  .menu-btn{display:grid}.actions{margin-left:auto}
  #nav{position:absolute;left:0;right:0;top:100%;flex-direction:column;margin:0;padding:10px 16px 16px;background:rgba(6,9,20,.97);border-bottom:1px solid var(--line);display:none}
  #nav.open{display:flex}#nav a{padding:12px 14px}
}

/* hero */
.hero{position:relative;padding:72px 0 56px;text-align:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,255,.07) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 70%);mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 70%)}
.hero-in{position:relative;max-width:820px}
.eyebrow{display:inline-block;padding:6px 14px;border:1px solid var(--line);border-radius:999px;color:var(--cy);font-size:.82rem;background:rgba(34,211,238,.07)}
.hero h1{font-size:clamp(2rem,6vw,3.6rem);margin:18px 0 14px;background:linear-gradient(120deg,#fff 20%,#a5b4fc 55%,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.02em}
.lead{color:var(--mut);font-size:1.08rem;max-width:620px;margin-inline:auto}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:12px;font-weight:600;border:1px solid transparent;cursor:pointer;font:inherit;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s;min-height:46px}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);color:#04101f;box-shadow:0 8px 28px -8px rgba(59,130,246,.8)}
.btn-primary:hover{box-shadow:0 10px 34px -6px rgba(34,211,238,.7)}
.btn-ghost{border-color:var(--line);background:rgba(148,163,255,.06);color:var(--tx)}
.btn-ghost:hover{border-color:var(--cy)}
.btn-wa{background:#16a34a;color:#fff}.btn-wa:hover{background:#15803d;box-shadow:0 8px 24px -8px rgba(34,197,94,.7)}
.btn-mail{background:rgba(59,130,246,.16);border-color:rgba(59,130,246,.5);color:#cfe0ff}.btn-mail:hover{background:rgba(59,130,246,.28)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-danger{background:rgba(248,113,113,.14);border-color:rgba(248,113,113,.5);color:#fecaca}

/* sections */
.section{padding:48px 0}
.section.alt{background:linear-gradient(180deg,transparent,rgba(11,18,38,.8),transparent)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:18px}
.sec-head h2{font-size:clamp(1.4rem,3.5vw,2rem);margin:0}
.count{color:var(--mut);margin:0}
.toolbar{display:flex;flex-direction:column;gap:14px;margin-bottom:26px}
.search{display:flex;align-items:center;gap:10px;padding:0 14px;height:48px;border:1px solid var(--line);border-radius:14px;background:rgba(148,163,255,.05);color:var(--mut);transition:.2s}
.search:focus-within{border-color:var(--cy);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.search input{flex:1;min-width:0;background:none;border:0;outline:0;color:var(--tx);font:inherit}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.chip-btn{flex:none;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(148,163,255,.05);color:var(--mut);font:inherit;cursor:pointer;transition:.2s}
.chip-btn:hover{color:var(--tx);border-color:var(--bl)}
.chip-btn.on{background:var(--grad);color:#04101f;border-color:transparent;font-weight:600}

/* grid + cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:22px}
.card{position:relative;display:flex;flex-direction:column;background:linear-gradient(180deg,rgba(18,28,60,.85),rgba(10,16,36,.95));border:1px solid var(--line);border-radius:var(--r);overflow:hidden;cursor:pointer;box-shadow:0 14px 40px -22px rgba(59,130,246,.55);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s}
.card[hidden]{display:none}
.thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#0a1128;box-shadow:inset 0 0 0 1px var(--line),0 0 34px -6px rgba(34,211,238,.28)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.ph{width:100%;height:100%;display:grid;place-items:center;color:hsl(var(--h) 90% 75%);background:radial-gradient(circle at 30% 20%,hsl(var(--h) 80% 40% / .55),transparent 60%),linear-gradient(135deg,#0b1430,#141040)}
.thumb.big{border-radius:var(--r);aspect-ratio:16/11;box-shadow:0 0 0 1px var(--line),0 0 60px -10px rgba(59,130,246,.5)}
.badges{position:absolute;left:10px;top:10px;display:flex;flex-wrap:wrap;gap:6px}
.badge{padding:3px 10px;border-radius:999px;font-size:.72rem;font-weight:600;background:rgba(6,9,20,.8);border:1px solid var(--line);backdrop-filter:blur(6px)}
.badge.feat{color:var(--warn);border-color:rgba(251,191,36,.5)}
.badge.sample{color:var(--cy);border-color:rgba(34,211,238,.5)}
.badge.st-unavailable{color:var(--bad);border-color:rgba(248,113,113,.5)}
.badge.st-coming_soon{color:#c4b5fd;border-color:rgba(139,92,246,.6)}
.card-body{display:flex;flex-direction:column;flex:1;padding:16px 16px 14px}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.chip{padding:3px 10px;border-radius:999px;font-size:.74rem;color:var(--cy);background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.25)}
.chip.alt{color:#c4b5fd;background:rgba(139,92,246,.1);border-color:rgba(139,92,246,.3)}
.chip.st-available{color:var(--ok);background:rgba(52,211,153,.08);border-color:rgba(52,211,153,.3)}
.chip.st-unavailable{color:var(--bad);background:rgba(248,113,113,.08);border-color:rgba(248,113,113,.3)}
.chip.st-coming_soon{color:var(--warn);background:rgba(251,191,36,.08);border-color:rgba(251,191,36,.3)}
.card h3{font-size:1.08rem;margin:0 0 6px}
.short{color:var(--mut);font-size:.92rem;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:6px;padding-top:12px;border-top:1px solid var(--line)}
.price{font-weight:700;font-size:1.1rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.view{display:inline-flex;align-items:center;gap:6px;color:var(--cy);font-size:.9rem}
@media(hover:hover){
  .card:hover{transform:translateY(-8px) scale(1.012);border-color:rgba(34,211,238,.5);box-shadow:0 24px 60px -20px rgba(34,211,238,.45)}
  .card:hover .thumb img{transform:scale(1.08)}
  .view svg{transition:transform .25s}.card:hover .view svg{transform:translateX(4px)}
}
@media(hover:none){.card:active{transform:scale(.97);border-color:rgba(34,211,238,.6)}.card:active .thumb img{transform:scale(1.04)}}
.empty{text-align:center;color:var(--mut);padding:40px 0}
.empty[hidden]{display:none}

/* steps */
.steps{list-style:none;margin:0 0 18px;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.step{padding:22px;border:1px solid var(--line);border-radius:var(--r);background:rgba(13,21,48,.6)}
.step b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--grad);color:#04101f;margin-bottom:10px}
.step h3{font-size:1.05rem}.step p{color:var(--mut);margin:0;font-size:.93rem}

/* detail page + modal */
.crumbs{color:var(--mut);font-size:.88rem;margin-bottom:18px}.crumbs a:hover{color:var(--cy)}
.detail{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:24px}
@media(min-width:820px){.detail{grid-template-columns:1.1fr 1fr;gap:36px}}
.d-info h1{font-size:clamp(1.5rem,4vw,2.2rem)}
.d-price{font-size:1.7rem;font-weight:800;margin:4px 0 2px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.pid{color:var(--mut);font-size:.85rem}
.d-actions{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 10px}
.d-actions .btn{flex:1 1 200px}
.note{padding:12px 14px;border:1px solid rgba(248,113,113,.4);border-radius:12px;color:#fecaca;background:rgba(248,113,113,.08)}
.d-text h2{font-size:1.2rem;margin-top:1.4em}
.d-text p,.d-text li{color:#c9d1f5}
.feat-list{padding-left:0;list-style:none}
.feat-list li{position:relative;padding-left:26px;margin:6px 0}
.feat-list li::before{content:"";position:absolute;left:0;top:.55em;width:12px;height:12px;border-radius:4px;background:var(--grad);box-shadow:0 0 10px rgba(34,211,238,.6)}
.modal{position:fixed;inset:0;z-index:90;display:flex;align-items:flex-end;justify-content:center;background:rgba(3,5,12,.76);backdrop-filter:blur(6px);animation:fade .25s}
.modal[hidden]{display:none}
.modal-box{position:relative;width:min(960px,100%);max-height:92vh;overflow:auto;background:linear-gradient(180deg,#0e1736,#080d20);border:1px solid var(--line);border-radius:22px 22px 0 0;padding:22px 18px 28px;animation:rise .35s cubic-bezier(.2,.8,.2,1);box-shadow:0 -10px 60px -10px rgba(59,130,246,.4)}
@media(min-width:760px){.modal{align-items:center;padding:24px}.modal-box{border-radius:22px;padding:28px}}
.modal-close{position:sticky;top:0;float:right;z-index:2;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:rgba(6,9,20,.85);color:var(--tx);font-size:1.5rem;line-height:1;cursor:pointer}
body.lock{overflow:hidden}
@keyframes fade{from{opacity:0}}
@keyframes rise{from{transform:translateY(40px);opacity:0}}

/* reveal */
.js .rv{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.js .rv.in{opacity:1;transform:none}
.js .card.rv.in{transition:opacity .7s ease,transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .js .rv{opacity:1;transform:none}
}

/* footer */
.site-footer{margin-top:40px;border-top:1px solid var(--line);background:rgba(6,9,20,.8);padding:36px 0 18px}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:26px}
.site-footer h4{font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
.site-footer p{margin:0 0 6px}
.flink{color:var(--tx)}.flink:hover{color:var(--cy)}
.copy{margin-top:26px;color:var(--mut);font-size:.8rem}