/* Self-Adjusting Focus Glasses landing page (/2/): DicountDeal red + navy + yellow, Manrope headings, clean white product shots */
:root{--red:#e63946;--red-dk:#c92a37;--navy:#1d3557;--navy-dk:#14243d;--yellow:#ffd166;--ink:#1f2933;--muted:#5d6670;--line:#e4e8ee;--soft:#f5f7fb;--r:18px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--red)}
h1,h2,h3{font-family:Manrope,Inter,sans-serif;color:var(--navy-dk);line-height:1.12;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,4.4vw,3.3rem);font-weight:800}
h1 em{font-style:normal;color:var(--red)}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:800}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:840px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:800 1rem/1 Manrope,Inter,sans-serif;text-decoration:none;border-radius:999px;padding:15px 28px;border:0;cursor:pointer;transition:transform .15s,filter .15s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.07)}
.btn-red{background:var(--red);color:#fff;box-shadow:0 10px 22px rgba(230,57,70,.3)}
.btn-navy{background:var(--navy);color:#fff}
.btn-yellow{background:var(--yellow);color:#1d1400}
.btn-lg{padding:18px 34px;font-size:1.08rem}
.btn-sm{padding:10px 18px;font-size:.9rem}
.btn-block{display:flex;width:100%}

/* promo + header */
.promo{background:var(--navy-dk);color:#fff;text-align:center;font-size:.88rem;padding:9px 16px}
.promo b{color:var(--yellow);letter-spacing:.04em}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top-in{display:flex;align-items:center;gap:24px;min-height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;font:800 1.35rem Manrope,sans-serif;color:var(--navy);text-decoration:none}
.logo b{color:var(--red)}
.top-nav{display:flex;gap:22px;margin-left:auto}
.top-nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:.95rem}
.top-nav a:hover{color:var(--red)}

/* hero */
.hero{background:linear-gradient(160deg,#fff4f4 0%,#eef3fa 100%);padding:34px 0 56px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:start}
.gallery{position:sticky;top:90px}
.g-main{position:relative;border-radius:var(--r);overflow:hidden;background:#fff;aspect-ratio:1;box-shadow:0 18px 44px rgba(29,53,87,.14)}
.g-main img{width:100%;height:100%;object-fit:contain}
.g-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:0;background:rgba(255,255,255,.92);color:var(--navy);font-size:1.6rem;line-height:1;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.15)}
.g-arrow.prev{left:12px}.g-arrow.next{right:12px}
.g-dots{display:flex;justify-content:center;gap:8px;margin:14px 0}
.g-dots span{width:8px;height:8px;border-radius:50%;background:#cfd6e1}
.g-dots span.on{background:var(--navy)}
.g-thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.g-thumbs button{padding:0;border:2px solid transparent;border-radius:12px;overflow:hidden;cursor:pointer;background:#fff;aspect-ratio:1}
.g-thumbs button.on{border-color:var(--navy)}
.g-thumbs img{width:100%;height:100%;object-fit:cover}
.tag{display:inline-block;background:#fff;border:1px solid #f3c6ca;color:var(--red-dk);font-weight:700;font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;padding:6px 12px;border-radius:999px;margin-bottom:16px}
.lead{font-size:1.1rem;color:var(--muted)}
.ticks{list-style:none;padding:0;margin:22px 0 26px;display:grid;gap:12px}
.ticks li{position:relative;padding-left:38px}
.ticks li::before{content:"✓";position:absolute;left:0;top:0;width:26px;height:26px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-size:.8rem;font-weight:800}
.ticks.small li{font-size:.95rem;color:var(--muted)}
.ticks.small li::before{background:var(--navy)}
.buy-box{background:#fff;border-radius:var(--r);padding:22px;box-shadow:0 10px 30px rgba(29,53,87,.08)}
.buy-price{display:flex;align-items:baseline;gap:10px;margin-bottom:14px}
.buy-price .now{font:800 2rem Manrope,sans-serif;color:var(--navy-dk)}
.buy-price .per{color:var(--muted)}
.assure{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-wrap:wrap;gap:6px 16px;justify-content:center;font-size:.85rem;color:var(--muted)}

/* number strip */
.strip{background:var(--navy);color:#dbe4f0;padding:28px 0}
.strip-in{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.strip b{display:block;font:800 1.8rem Manrope,sans-serif;color:var(--yellow)}
.strip span{font-size:.9rem}

/* sections */
.sec{padding:76px 0}
.sec.alt{background:var(--soft)}
.sec.navy{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-dk) 100%);color:#dbe4f0}
.kicker{display:block;color:var(--red);font-weight:800;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.head{text-align:center;max-width:680px;margin:0 auto 40px}
.head p{color:var(--muted)}
.head.light h2{color:#fff}.head.light p{color:#b9c6d8}.head.light .kicker{color:var(--yellow)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split p{color:var(--muted)}
.rounded{border-radius:var(--r);box-shadow:0 18px 40px rgba(29,53,87,.12)}
.rounded.white{background:#fff;padding:12px}
.steps-img{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:28px}
.steps-img img{background:#fff;border-radius:14px;border:1px solid var(--line);padding:10px;width:100%}
.steps{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.steps li::before{content:counter(s);display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--red);color:#fff;font:800 1rem Manrope,sans-serif;margin-bottom:10px}
.steps b{display:block;color:var(--navy-dk);margin-bottom:4px}
.steps span{color:var(--muted);font-size:.93rem}
.uses{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.uses figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.uses img{aspect-ratio:1;object-fit:cover;width:100%}
.uses figcaption{padding:14px 16px;color:var(--muted);font-size:.9rem}
.uses figcaption b{display:block;color:var(--navy-dk);font-size:1rem}
.specs{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.specs th,.specs td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.specs tr:last-child th,.specs tr:last-child td{border-bottom:0}
.specs th{width:34%;background:var(--soft);color:var(--navy-dk);font-weight:600}

/* pricing */
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.pcard{position:relative;background:#fff;color:var(--ink);border-radius:20px;padding:30px 24px 26px;text-align:center;display:flex;flex-direction:column}
.pcard.featured{outline:3px solid var(--yellow);transform:translateY(-8px);box-shadow:0 22px 50px rgba(0,0,0,.3)}
.ribbon{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--yellow);color:#1d1400;font-weight:800;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;padding:6px 14px;border-radius:999px;white-space:nowrap}
.off{position:absolute;top:16px;right:16px;background:var(--red);color:#fff;font:800 .85rem Manrope,sans-serif;padding:5px 10px;border-radius:999px}
.p-img{position:relative;height:150px;margin:0 auto 14px;display:grid;place-items:center}
.p-img img{max-height:150px;width:auto}
.p-img .x{position:absolute;right:14%;bottom:10px;background:var(--navy);color:#fff;font:800 .95rem Manrope,sans-serif;padding:4px 10px;border-radius:999px}
.pcard h3{margin-bottom:2px}
.qty{color:var(--muted);margin:0 0 8px;font-weight:500}
.price{font:800 2.4rem/1 Manrope,sans-serif;color:var(--navy-dk);margin:0 0 6px}
.price s{display:block;font-size:1rem;font-weight:600;color:#98a2b3;margin-bottom:4px}
.per{color:var(--red-dk);font-weight:700;font-size:.92rem;margin:0 0 16px}
.pcard ul{list-style:none;padding:0;margin:0 0 22px;text-align:left;display:grid;gap:8px;flex:1}
.pcard li{display:flex;gap:9px;font-size:.93rem}
.pcard li::before{content:"✓";color:var(--red);font-weight:800}
.pay-row{display:flex;justify-content:center;margin-top:34px}
.pay-icons{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;align-items:center}
.pay-icons svg{width:46px;height:30px;display:block;border-radius:5px}
.pay-icons .ssl{display:flex;align-items:center;gap:5px;color:var(--yellow);font-weight:800;font-size:.8rem;line-height:1}
.pay-icons .ssl svg{width:18px;height:18px}
.pay-icons .ssl small{display:block;font-size:.6rem;letter-spacing:.08em}

/* multi-pack pictures: one product photo per pair in the pack, overlapping like a little pile */
.stack{display:flex;justify-content:center;align-items:center}
.stack img{flex:0 0 auto;width:var(--sw);height:var(--sw);max-width:none;max-height:none;object-fit:contain;margin-left:calc(var(--sw) * -.55);mix-blend-mode:multiply}
.stack img:first-child{margin-left:0}
.stack img:nth-child(2){transform:translateY(6px) rotate(6deg)}
.stack img:nth-child(3){transform:translateY(-5px) rotate(-6deg)}
.stack.n1{--sw:150px}.stack.n2{--sw:125px}.stack.n3{--sw:110px}
.p-img.stack{display:flex}

/* guarantee + faq */
.guarantee{display:flex;gap:32px;align-items:center;background:#fff4f4;border:1px solid #f3c6ca;border-radius:22px;padding:34px}
.seal{flex:0 0 116px;height:116px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-content:center;text-align:center;border:5px solid #fff;box-shadow:0 0 0 3px var(--red);line-height:1}
.seal b{font:800 2.5rem Manrope,sans-serif}
.seal span{font-weight:800;letter-spacing:.2em;font-size:.8rem}
.guarantee p{margin:0;color:var(--muted)}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;padding:0 20px}
.faq summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700;color:var(--navy-dk);display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--red)}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--muted);margin:0 0 18px}

/* final cta + footer */
.cta{background:var(--red);color:#ffe9eb;padding:46px 0}
.cta-in{display:flex;align-items:center;gap:40px;justify-content:center}
.cta img{width:220px;background:#fff;border-radius:18px;padding:10px}
.cta h2{color:#fff}
.cta p{color:#ffe0e3}
.foot{background:var(--navy-dk);color:#a9b6c8;padding:40px 0 100px;font-size:.9rem;text-align:center}
.foot a{color:var(--yellow)}
.f-links{list-style:none;padding:0;margin:0 0 16px;display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center}
.note{font-size:.78rem;color:#7f8ca0;max-width:760px;margin:10px auto 0}

/* sticky mobile buy bar */
.sticky-buy{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(0,0,0,.12);transform:translateY(110%);transition:transform .25s}
.sticky-buy.on{transform:none}
.sticky-buy span{font-size:.92rem}

@media (min-width:901px){.sticky-buy{display:none}}
@media (max-width:900px){
  .top-nav{display:none}
  .top-in .btn{margin-left:auto}
  .hero-grid,.split{grid-template-columns:1fr;gap:32px}
  .split.rev>img{order:-1}
  .gallery{position:static}
  .strip-in{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr}
  .uses{grid-template-columns:1fr 1fr}
  .prices{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .pcard.featured{transform:none;order:-1}
  .sec{padding:56px 0}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .top-in{min-height:60px;gap:12px}
  .logo{font-size:1.15rem}
  .hero{padding:20px 0 40px}
  .g-thumbs{gap:6px}
  .steps-img{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .specs th{width:40%}
  .specs th,.specs td{padding:12px 14px;font-size:.9rem}
  .guarantee{flex-direction:column;text-align:center;padding:26px 20px}
  .cta-in{flex-direction:column;text-align:center;gap:20px}
  .cta img{width:160px}
}
/* ==== bigger product photos ==== */
@media (min-width:901px){.wrap{max-width:1280px}.hero-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}}
.stack.n1{--sw:200px}.stack.n2{--sw:170px}.stack.n3{--sw:150px}