/* Foot & Nail Light-Care Device landing page (/7/): midnight tech look — dark navy, blue→infrared-orange glow gradients,
   Space Grotesk headings, centered hero with the gallery below the headline */
:root{--night:#0b1026;--night-2:#141a3a;--line-d:#283058;--blue:#3b6cff;--violet:#7a4dff;--ir:#ff7a2f;--ink:#141a33;--muted:#5c6587;--muted-d:#aab4d8;--line:#e3e7f3;--soft:#f3f5fb;--r:20px;--grad:linear-gradient(90deg,#3b6cff,#7a4dff 55%,#ff7a2f)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
h1,h2,h3{font-family:"Space Grotesk",sans-serif;color:var(--night);line-height:1.08;margin:0 0 .5em;font-weight:700;letter-spacing:-.025em}
h1{font-size:clamp(2.3rem,5vw,3.9rem)}
h2{font-size:clamp(1.7rem,3.3vw,2.5rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:860px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 1rem/1 "Space Grotesk",sans-serif;text-decoration:none;border-radius:14px;padding:15px 26px;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px)}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 14px 30px -12px rgba(59,108,255,.8)}
.btn-line{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px #3c4678}
.btn-line:hover{box-shadow:inset 0 0 0 1.5px #7fa2ff}
.btn-white{background:#fff;color:var(--night)}
.btn-lg{padding:18px 32px;font-size:1.06rem}
.btn-sm{padding:10px 18px;font-size:.9rem}
.btn-block{display:flex;width:100%}

/* bar + header */
.glow-bar{background:var(--grad);color:#fff;text-align:center;font-weight:600;font-size:.88rem;padding:9px 16px}
.top{background:var(--night);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line-d)}
.top-in{display:flex;align-items:center;gap:24px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:#fff;font:700 1.25rem "Space Grotesk",sans-serif;line-height:1}
.logo b{color:#ff9a5a}
.logo small{display:block;font:500 .7rem "DM Sans",sans-serif;letter-spacing:.14em;text-transform:uppercase;color:#8f9bc4;margin-top:3px}
.top-nav{display:flex;gap:22px;margin-left:auto}
.top-nav a{color:#c9d1ef;text-decoration:none;font-weight:500;font-size:.94rem}
.top-nav a:hover{color:#fff}

/* hero: centered copy, gallery below */
.hero{background:radial-gradient(circle at 15% 75%,rgba(59,108,255,.35),transparent 40%),radial-gradient(circle at 85% 75%,rgba(255,122,47,.28),transparent 40%),var(--night);color:var(--muted-d);padding:56px 0 64px;text-align:center}
.hero-in{max-width:900px}
.eyebrow{display:inline-block;border:1px solid var(--line-d);background:rgba(255,255,255,.04);color:#c9d1ef;font-weight:500;font-size:.85rem;padding:7px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{color:#fff}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.12rem;max-width:700px;margin:0 auto 1.4em}
.hero-buy{display:flex;justify-content:center;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:36px}
.hero-buy p{margin:0}
.hero-buy b{color:#fff;font:700 1.4rem "Space Grotesk",sans-serif}
.gallery{max-width:640px;margin:0 auto;background:var(--night-2);border:1px solid var(--line-d);border-radius:26px;padding:14px;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.g-main{position:relative;aspect-ratio:1;border-radius:16px;overflow:hidden;background:#fff}
.g-main img{width:100%;height:100%;object-fit:cover}
.g-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:0;background:rgba(11,16,38,.75);color:#fff;font-size:1.5rem;line-height:1;cursor:pointer}
.g-arrow.prev{left:10px}.g-arrow.next{right:10px}
.g-thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:10px}
.g-thumbs button{padding:0;border:2px solid transparent;border-radius:10px;overflow:hidden;cursor:pointer;background:#fff;aspect-ratio:1;opacity:.6;transition:opacity .15s}
.g-thumbs button.on,.g-thumbs button:hover{opacity:1}
.g-thumbs button.on{border-color:#7fa2ff}
.g-thumbs img{width:100%;height:100%;object-fit:cover}
.trust{list-style:none;padding:0;margin:28px 0 0;display:flex;justify-content:center;flex-wrap:wrap;gap:6px 22px;font-size:.88rem;color:#8f9bc4}

/* sections */
.sec{padding:80px 0}
.sec.tint{background:var(--soft)}
.sec.dark{background:var(--night);color:var(--muted-d)}
.sec.dark h2{color:#fff}
.kicker{display:inline-block;font:600 .8rem "Space Grotesk",sans-serif;letter-spacing:.14em;text-transform:uppercase;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}
.kicker.light{background:none;color:#ff9a5a}
.head{text-align:center;max-width:700px;margin:0 auto 42px}
.head p{color:var(--muted)}
.head.light p{color:var(--muted-d)}
.head.light h2{color:#fff}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.lights{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr) minmax(0,1fr);gap:22px;align-items:center}
.lcard{border-radius:var(--r);padding:28px 24px;color:#fff}
.lcard b{display:block;font:700 2.4rem "Space Grotesk",sans-serif;line-height:1}
.lcard h3{color:#fff;margin:6px 0 10px}
.lcard p{margin:0;opacity:.85;font-size:.95rem}
.lcard.blue{background:linear-gradient(160deg,#3b6cff,#2a3fb8);box-shadow:0 20px 50px -20px rgba(59,108,255,.8)}
.lcard.ir{background:linear-gradient(160deg,#ff7a2f,#c4471a);box-shadow:0 20px 50px -20px rgba(255,122,47,.8)}
.lpic{border-radius:var(--r);box-shadow:0 20px 50px rgba(11,16,38,.15)}
.glowpic{border-radius:var(--r);box-shadow:0 0 0 1px var(--line-d),0 0 80px rgba(59,108,255,.35)}
.feats{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px}
.feats li{background:var(--night-2);border:1px solid var(--line-d);border-radius:14px;padding:14px 18px}
.feats b{display:block;color:#fff;font-family:"Space Grotesk",sans-serif}
.feats span{font-size:.93rem}
.steps{list-style:none;counter-reset:s;padding:0;margin:0 0 30px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.steps li{counter-increment:s;position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 20px;overflow:hidden}
.steps li::before{content:"0" counter(s);display:block;font:700 2rem "Space Grotesk",sans-serif;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px}
.steps b{display:block;font-family:"Space Grotesk",sans-serif;font-size:1.08rem;color:var(--night);margin-bottom:4px}
.steps span{color:var(--muted);font-size:.93rem}
.parts{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.parts img{width:100%;border-radius:var(--r);border:1px solid var(--line);background:#fff;object-fit:contain;aspect-ratio:1}
.expect{display:grid;gap:14px}
.expect div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px}
.expect b{display:block;font:700 1.08rem "Space Grotesk",sans-serif;color:var(--night);margin-bottom:4px}
.expect p{margin:0;color:var(--muted)}

/* pricing */
.prices{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
.pcard{position:relative;background:var(--night-2);border:1px solid var(--line-d);border-radius:20px;padding:22px 18px 20px;text-align:center;display:flex;flex-direction:column}
.pcard.featured{border-color:transparent;background:linear-gradient(var(--night-2),var(--night-2)) padding-box,var(--grad) border-box;border:2px solid transparent;transform:translateY(-10px);box-shadow:0 24px 60px -20px rgba(59,108,255,.7)}
.flag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font:700 .74rem "Space Grotesk",sans-serif;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:999px;white-space:nowrap}
.p-img{position:relative;background:#fff;border-radius:14px;aspect-ratio:4/3;overflow:hidden;margin-bottom:16px}
.p-img img{width:100%;height:100%;object-fit:cover}
.p-img .x{position:absolute;right:8px;bottom:8px;background:var(--night);color:#fff;font:700 .95rem "Space Grotesk",sans-serif;padding:3px 10px;border-radius:8px}
.pcard h3{color:#fff;margin:0 0 4px}
.qty{margin:0 0 12px;font-size:.86rem;color:#8f9bc4}
.price{margin:0 0 4px;font:700 2.2rem/1 "Space Grotesk",sans-serif;color:#fff;flex:1;display:flex;flex-direction:column;justify-content:flex-end}
.price s{font-size:.95rem;font-weight:500;color:#6b77a3;margin-bottom:4px}
.per{margin:0 0 16px;font-size:.85rem;color:#ff9a5a}
/* multi-pack pictures: one photo per device in the set, fanned out like cards */
.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:cover;margin-left:calc(var(--sw) * -.6);border:3px solid #fff;border-radius:12px;box-shadow:0 8px 20px rgba(0,0,0,.45)}
.stack img:first-child{margin-left:0;transform:rotate(-5deg)}
.stack img:nth-child(2){transform:translateY(4px) rotate(3deg)}
.stack img:nth-child(3){transform:translateY(-3px) rotate(-2deg)}
.stack img:nth-child(4){transform:translateY(5px) rotate(6deg)}
.stack.n1{--sw:130px}.stack.n2{--sw:112px}.stack.n3{--sw:100px}.stack.n4{--sw:92px}
.p-img.stack{aspect-ratio:auto;height:150px;overflow:visible;background:none;border-radius:0}
.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:#7fa2ff;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}

/* guarantee + faq */
.guarantee{display:flex;gap:32px;align-items:center;border-radius:24px;padding:34px;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;border:2px solid transparent}
.seal{flex:0 0 116px;height:116px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-content:center;text-align:center;line-height:1}
.seal b{font:700 2.4rem "Space Grotesk",sans-serif}
.seal span{font-weight:700;letter-spacing:.2em;font-size:.78rem}
.seal small{font-weight:700;font-size:.5rem;letter-spacing:.14em;margin-top:3px}
.guarantee p{margin:0;color:var(--muted)}
.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:10px;padding:0 22px}
.faq summary{cursor:pointer;list-style:none;padding:18px 0;font:600 1.02rem "Space Grotesk",sans-serif;color:var(--night);display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:0 0 26px;height:26px;border-radius:8px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-size:1.15rem;line-height:1}
.faq details[open] summary::after{content:"−";background:var(--grad);color:#fff}
.faq details p{color:var(--muted);margin:0 0 18px}

/* final cta + footer */
.cta{background:var(--grad);padding:44px 0}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta h2{color:#fff;margin-bottom:.2em}
.cta p{margin:0;color:#eef1ff}
.foot{background:var(--night);color:#8f9bc4;padding:40px 0 100px;font-size:.9rem;text-align:center}
.foot a{color:#ff9a5a}
.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:#6b77a3;max-width:780px;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:var(--night);color:#fff;border-top:1px solid var(--line-d);transform:translateY(110%);transition:transform .25s}
.sticky-buy.on{transform:none}
.sticky-buy span{font-size:.9rem}

@media (min-width:901px){.sticky-buy{display:none}}
@media (max-width:1000px){.prices{grid-template-columns:1fr 1fr}.pcard.featured{transform:none}}
@media (max-width:900px){
  .top-nav{display:none}
  .top-in .btn{margin-left:auto}
  .split{grid-template-columns:1fr;gap:32px}
  .lights{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .lpic{grid-column:span 2;grid-row:1;width:100%;max-width:420px;margin:0 auto}
  .steps{grid-template-columns:1fr 1fr}
  .sec{padding:56px 0}
  .hero{padding:36px 0 48px}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .top-in{min-height:60px;gap:12px}
  .logo{font-size:1.08rem}
  .lights{grid-template-columns:minmax(0,1fr)}
  .lpic{grid-column:auto}
  .steps,.parts{grid-template-columns:1fr}
  .prices{grid-template-columns:1fr;max-width:400px;margin:0 auto}
  .guarantee{flex-direction:column;text-align:center;padding:26px 20px}
  .cta-in{flex-direction:column;text-align:center}
}
/* ==== bigger product photos ==== */
@media (min-width:901px){.wrap{max-width:1280px}.hero-in{max-width:1080px}.gallery{max-width:820px}}
.stack.n1{--sw:175px}.stack.n2{--sw:150px}.stack.n3{--sw:134px}.stack.n4{--sw:122px}.p-img.stack{height:200px}