/* ═════════ RoboBin — one-product site ═════════ */
:root{
  --cream:#FAF5EB; --cream2:#F3EBDA; --paper:#FFFFFF;
  --ink:#171310; --ink2:#5C5347;
  --red:#C8102E; --red-dark:#9E0B23;
  --gold:#C9A24B; --line:#E7DCC6;
  --radius:22px; --shadow:0 24px 60px -24px rgba(23,19,16,.22);
  --font-bn:'Hind Siliguri',sans-serif; --font-en:'Sora',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-bn);background:var(--cream);color:var(--ink);line-height:1.7;overflow-x:hidden}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.wrap.narrow{max-width:720px}
h1,h2{font-family:var(--font-bn);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(1.7rem,4vw,2.6rem);margin:.4em 0 .6em}
.center{text-align:center}
.narrow{max-width:640px;margin-left:auto;margin-right:auto}
.red{color:var(--red)}
.dim{color:var(--ink2)}
.eyebrow{font-family:var(--font-en);font-size:.78rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--red);margin-bottom:.6em}
.eyebrow.center{text-align:center}
.eyebrow.light{color:#FFD9A0}

/* buttons */
.btn{display:inline-block;background:var(--red);color:#fff;font-weight:700;font-size:1.02rem;
  padding:.95em 1.9em;border-radius:999px;text-decoration:none;border:none;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;box-shadow:0 14px 30px -12px rgba(200,16,46,.55)}
.btn:hover{background:var(--red-dark);transform:translateY(-2px)}
.btn-sm{padding:.6em 1.4em;font-size:.92rem}
.btn-lg{font-size:1.12rem;padding:1em 2.2em}
.btn-block{display:block;width:100%;text-align:center}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}

/* announcement */
.announce{background:var(--ink);color:#F7EFDD;text-align:center;font-size:.86rem;font-weight:600;
  padding:.65em 1em;display:flex;gap:.9em;justify-content:center;align-items:center;flex-wrap:wrap}
.announce i{color:var(--gold);font-style:normal;font-size:.7rem}

/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:.9em 22px;background:rgba(250,245,235,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.logo{font-family:var(--font-en);font-weight:800;font-size:1.45rem;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.logo span{color:var(--red)} .logo em{font-style:normal;color:var(--gold)}
.nav-links{display:flex;gap:1.6em}
.nav-links a{color:var(--ink2);text-decoration:none;font-weight:600;font-size:.95rem}
.nav-links a:hover{color:var(--red)}

/* hero */
.hero{padding:3.2em 0 3.6em;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto;height:70%;
  background:radial-gradient(closest-side,rgba(201,162,75,.16),transparent 70%);pointer-events:none}
.hero-inner{max-width:1140px;margin:0 auto;padding:0 22px;display:grid;grid-template-columns:1.05fr .95fr;gap:3em;align-items:center;position:relative}
.kicker{font-family:var(--font-en);font-weight:600;color:var(--ink2);margin:-.4em 0 .8em}
.hero h1{font-size:clamp(2.5rem,5.6vw,4rem)}
.lede{font-size:1.12rem;color:var(--ink2);margin:1em 0 1.4em;max-width:34em}
.price-row{display:flex;align-items:baseline;gap:.7em;margin:0 0 1.3em;flex-wrap:wrap}
.price{font-family:var(--font-en);font-weight:800;font-size:2.1rem;color:var(--ink)}
.price-row.big .price{font-size:2.6rem;color:#fff}
.was{color:#A79B83;text-decoration:line-through;font-size:1.15rem;font-weight:600}
.offer-card .was{color:#E8CFA8}
.save{background:#E7F6EC;color:#147A3C;font-weight:700;font-size:.85rem;padding:.3em .9em;border-radius:999px}
.cta-row{display:flex;gap:.9em;flex-wrap:wrap;margin-bottom:1em}
.micro{font-size:.9rem;color:var(--ink2)}
.hero-media{position:relative}
.hero-slider{position:relative;overflow:hidden;border-radius:28px;box-shadow:var(--shadow)}
.hero-track{display:flex;transition:transform .55s cubic-bezier(.22,.61,.36,1)}
.hero-slide{min-width:100%}
.hero-slide img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover}
.hs-arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:none;background:rgba(23,19,16,.55);color:#FAF5EB;font-size:1.7rem;line-height:1;cursor:pointer;opacity:0;transition:opacity .25s,background .25s;z-index:2}
.hero-slider:hover .hs-arrow,.hero-slider:focus-within .hs-arrow{opacity:1}
.hs-prev{left:14px}.hs-next{right:14px}
.hs-arrow:hover{background:var(--red)}
.hs-dots{position:absolute;left:0;right:0;bottom:14px;display:flex;gap:8px;justify-content:center;z-index:2}
.hs-dots button{width:9px;height:9px;border-radius:50%;border:none;background:rgba(250,245,235,.55);cursor:pointer;padding:0;transition:all .25s}
.hs-dots button.on{background:var(--red);transform:scale(1.35)}
.float-badge{position:absolute;background:var(--paper);border-radius:16px;padding:.7em 1.1em;box-shadow:var(--shadow);text-align:center;line-height:1.35}
.float-badge b{display:block;font-family:var(--font-en);font-size:1.25rem;color:var(--red)}
.float-badge span{font-size:.82rem;color:var(--ink2);font-weight:600}
.b1{top:6%;left:-4%} .b2{bottom:8%;right:-3%}
.b1{animation:float 5s ease-in-out infinite} .b2{animation:float 6s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* marquee */
.marquee{background:var(--ink);color:#F7EFDD;overflow:hidden;padding:.9em 0;white-space:nowrap}
.marquee-track{display:inline-block;animation:scroll 26s linear infinite;font-weight:600}
.marquee-track span{margin:0 1.1em;font-size:1rem}
.marquee-track i{color:var(--gold);font-style:normal}
@keyframes scroll{to{transform:translateX(-50%)}}

/* problem */
.problem{padding:4.5em 0}
.problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1em;margin-top:2.2em}
.p-card{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:1.4em 1.2em;font-size:.95rem}
.p-card.good{background:var(--ink);color:#F7EFDD;border-color:var(--ink)}
.p-card.good b{color:#FFD9A0}
.p-x{color:var(--red);font-weight:800;font-size:1.3rem}
.p-tick{color:#7BE3A0;font-weight:800;font-size:1.3rem}

/* story */
.story{padding:4.5em 0;background:var(--cream2)}
.story-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:3em;align-items:center}
.story-media img{border-radius:26px;box-shadow:var(--shadow)}
.spec-list{list-style:none;margin-top:1.6em;display:grid;grid-template-columns:1fr 1fr;gap:.7em}
.spec-list li{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:.8em 1em;display:flex;justify-content:space-between;gap:.6em;font-size:.93rem}
.spec-list b{color:var(--ink2);font-weight:600}
.spec-list span{font-weight:700;text-align:right}

/* features */
.features{padding:4.5em 0}
.feat-list{margin-top:2.2em;display:grid;gap:.8em;max-width:780px;margin-left:auto;margin-right:auto}
.qa .q .fic{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--red),var(--red-dark));color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex:0 0 auto;font-weight:400}
.qa .q b{flex:1;font-size:1.02rem}
.feat-list .qa .a p{padding-left:5em}

/* colors */
.colors{padding:4.5em 0;background:var(--ink);color:#F7EFDD}
.colors h2{color:#fff}
.colors p{color:#D8CBB2}
.colors b{color:#FFD9A0}
.colors-grid{display:grid;grid-template-columns:1fr 1fr;gap:3em;align-items:center}
.swatches{display:flex;gap:1em;margin:1.6em 0;flex-wrap:wrap}
.sw{display:flex;align-items:center;gap:.8em;background:rgba(255,255,255,.06);border:2px solid rgba(255,255,255,.16);
  border-radius:16px;padding:.8em 1.2em;cursor:pointer;color:#F7EFDD;font-family:var(--font-bn);font-size:1rem;font-weight:600;transition:border-color .2s}
.sw.active{border-color:var(--gold);background:rgba(201,162,75,.12)}
.sw .dot{width:30px;height:30px;border-radius:50%;flex:none}
.sw-name small{display:block;font-weight:400;color:#B9A98D;font-size:.82rem}
.colors-media img{border-radius:26px;box-shadow:0 24px 60px -24px rgba(0,0,0,.5);aspect-ratio:1/1;object-fit:cover;width:100%;transition:opacity .25s}
.colors-media .cap{text-align:center;margin-top:.8em;color:#B9A98D;font-size:.92rem}
.colors .btn{margin-top:.4em}

/* gallery */
.gallery{padding:4.5em 0 3em;overflow:hidden}
.gal-track{display:flex;gap:1.1em;overflow-x:auto;padding:2em 22px 1em;scroll-snap-type:x mandatory;scrollbar-width:none}
.gal-track::-webkit-scrollbar{display:none}
.gal-track figure{flex:0 0 300px;scroll-snap-align:start;margin:0}
.gal-track img{border-radius:20px;aspect-ratio:4/5;object-fit:cover;width:100%;box-shadow:0 16px 40px -18px rgba(23,19,16,.3)}
.gal-track figcaption{text-align:center;font-weight:600;color:var(--ink2);margin-top:.6em}
.hint{color:#A79B83;font-size:.9rem;margin-top:.4em}

/* lifestyle */
.lifestyle{padding:1em 0 4.5em}
.life-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4em;margin-top:2.6em}
.life-card{margin:0;background:var(--paper);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);transition:transform .3s ease}
.life-card:hover{transform:translateY(-6px)}
.life-card img{display:block;width:100%;aspect-ratio:4/5;object-fit:cover}
.life-card figcaption{padding:1.2em 1.35em 1.45em}
.life-card figcaption b{display:block;font-size:1.08rem;margin-bottom:.3em}
.life-card figcaption span{color:var(--ink2);font-size:.93rem;line-height:1.65}

/* offer */
.offer{padding:4.5em 0}
.offer-card{background:linear-gradient(135deg,#1E1712,#3A2415 60%,#5C1A22);border-radius:30px;color:#F7EFDD;
  display:grid;grid-template-columns:1.1fr .9fr;gap:2.5em;padding:3em;box-shadow:var(--shadow);position:relative;overflow:hidden}
.offer-card::before{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-120px;
  background:radial-gradient(closest-side,rgba(200,16,46,.35),transparent 70%)}
.offer-card h2{color:#fff}
.save-line{margin:.4em 0 1.4em;font-size:1.05rem}
.save-line b{color:#FFD9A0}
.includes{list-style:none;display:grid;gap:.6em;margin-top:.4em}
.includes li{font-size:1rem;color:#EFE3CB}
.offer-right{display:flex;flex-direction:column;justify-content:center;gap:1.1em;position:relative}
.cod-box{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:18px;padding:1.4em}
.cod-title{font-family:var(--font-en);font-weight:700;letter-spacing:.06em;color:#FFD9A0;margin-bottom:.4em}
.offer .micro{color:#CBB894}

/* reviews */
.reviews{padding:4em 0}
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2em;margin-top:2em}
.rev{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.8em 1.6em;font-size:.98rem}
.rev p{margin-bottom:1em}
.rev cite{font-style:normal;font-weight:700;color:var(--red);font-size:.9rem}

/* faq */
.faq{padding:4em 0;background:var(--cream2)}
.faq-list{margin-top:1.6em;display:grid;gap:.8em}
.qa{background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.qa .q{width:100%;background:none;border:none;font-family:var(--font-bn);font-size:1.05rem;font-weight:700;color:var(--ink);
  padding:1.1em 1.3em;display:flex;justify-content:space-between;align-items:center;cursor:pointer;text-align:left;gap:1em}
.qa .q span:not(.fic){color:var(--red);font-size:1.4rem;line-height:1;transition:transform .25s}
.qa.open .q span:not(.fic){transform:rotate(45deg)}
.qa .a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.qa .a p{padding:0 1.3em 1.2em;color:var(--ink2)}

/* final */
.final{padding:4.5em 0}
.final p{color:var(--ink2);margin-bottom:1.6em;font-size:1.1rem}

/* order */
.order{padding:3em 0 5em}
.order-card{background:var(--paper);border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);padding:2.8em}
.order-card h2{margin-bottom:.2em}
#orderForm{display:grid;gap:1.1em;margin-top:1.8em}
#orderForm label{font-weight:600;font-size:.98rem;display:grid;gap:.45em}
#orderForm input:not([type=radio]),#orderForm textarea{font-family:var(--font-bn);font-size:1rem;padding:.9em 1.1em;border:2px solid var(--line);
  border-radius:14px;background:var(--cream);color:var(--ink);width:100%;transition:border-color .2s}
#orderForm input:focus,#orderForm textarea:focus{outline:none;border-color:var(--red)}
.err{display:none;color:var(--red);font-size:.85rem;font-weight:600}
.err.show{display:block}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:1.2em}
.flabel{font-weight:600;font-size:.98rem;margin-bottom:.45em;display:block}
.radio-row{display:grid;gap:.7em}
.radio{display:flex!important;align-items:center;gap:.55em;border:2px solid var(--line);border-radius:14px;padding:.7em 1em;cursor:pointer;font-size:.95rem}
.radio input{accent-color:var(--red);width:auto;flex:0 0 auto}
.radio .rtxt{flex:1;min-width:0}
.rdot{width:22px;height:22px;border-radius:50%;flex:none}
.qty{display:flex;align-items:center;gap:1em;border:2px solid var(--line);border-radius:14px;padding:.55em .9em;width:max-content}
.qty button{width:34px;height:34px;border-radius:50%;border:none;background:var(--ink);color:#fff;font-size:1.2rem;cursor:pointer;line-height:1}
.qty span{font-weight:700;font-size:1.15rem;min-width:1.6em;text-align:center}
.total-row{display:flex;justify-content:space-between;align-items:center;background:var(--cream2);border-radius:14px;padding:1em 1.3em;font-size:1.05rem}
.total-row b{font-family:var(--font-en);font-size:1.5rem;color:var(--red)}
.t-box{display:grid;gap:.45em;margin:1.3em 0 .2em}
.t-row{display:flex;justify-content:space-between;align-items:center;padding:.15em 1.3em;font-size:.98rem;color:var(--ink2)}
.t-row small{color:#A79B83;font-size:.85em}
#successView{text-align:center;padding:1em 0}
.success-ic{width:84px;height:84px;border-radius:50%;background:#E7F6EC;color:#147A3C;font-size:2.4rem;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin:0 auto 1em}
.s-box{background:var(--cream2);border-radius:16px;padding:1.4em;margin:1.4em 0;text-align:left;display:grid;gap:.4em}

/* footer */
footer{background:var(--ink);color:#B9A98D;padding:2.6em 0}
.foot{display:flex;justify-content:space-between;align-items:center;gap:1.5em;flex-wrap:wrap}
.foot .logo{color:#F7EFDD}
.foot p{font-size:.9rem;line-height:1.8}
.foot p a{color:#F7EFDD;text-decoration:underline;text-underline-offset:3px}

/* sticky bar */
.stickybar{position:fixed;left:12px;right:12px;bottom:12px;z-index:60;background:var(--paper);border:1px solid var(--line);
  border-radius:20px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;
  padding:.7em .8em .7em 1.2em;transform:translateY(140%);transition:transform .35s ease}
.stickybar.show{transform:translateY(0)}
.sb-price{display:flex;flex-direction:column;line-height:1.3}
.sb-price .was{font-size:.85rem}
.sb-price b{font-family:var(--font-en);font-size:1.35rem;color:var(--red)}

/* reveal on scroll */
.rv{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}

/* responsive */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:2em}
  .hero{padding:2.2em 0 2.8em}
  /* mobile hero order: headline → lede → product image → price → CTAs */
  .hero-copy{display:contents}
  .hero-inner>.hero-media{order:1}
  .hero-copy>.price-row,.hero-copy>.cta-row,.hero-copy>.micro{order:2}
  .problem-grid{grid-template-columns:1fr 1fr}
  .story-grid,.colors-grid{grid-template-columns:1fr;gap:2em}
  .offer-card{grid-template-columns:1fr;padding:2.2em 1.6em}
  .rev-grid{grid-template-columns:1fr}
  .life-grid{grid-template-columns:1fr;max-width:440px;margin-left:auto;margin-right:auto}
  .nav-links{display:none}
  .b1{left:2%} .b2{right:2%}
}
@media(max-width:560px){
  .problem-grid{grid-template-columns:1fr}
  .frow{grid-template-columns:1fr}
  .order-card{padding:1.8em 1.2em}
  .float-badge{padding:.5em .8em}
  .float-badge b{font-size:1rem}
  .cta-row .btn{flex:1;text-align:center}
}
@media(hover:none){
  .hs-arrow{opacity:1;width:38px;height:38px}
}