:root{--ff:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--red:#af2120;--red2:#d4302e;--bg:#0b0b0c;--s1:#141416;--s2:#1c1c1f;--s3:#26262a;--line:#2c2c31;--tx:#f3f3f4;--mut:#9a9aa2;--ease:cubic-bezier(.2,.8,.2,1)}
[hidden]{display:none!important}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.45 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
body{background:
  radial-gradient(120% 60% at 50% -10%,rgba(175,33,32,.18),transparent 60%),
  repeating-linear-gradient(45deg,rgba(255,255,255,.018) 0 2px,transparent 2px 6px),
  repeating-linear-gradient(-45deg,rgba(255,255,255,.018) 0 2px,transparent 2px 6px),var(--bg);background-attachment:fixed}
a{color:#ff6b69}
:focus-visible{outline:2px solid var(--red2);outline-offset:2px}
svg{width:22px;height:22px;flex:none}

/* hero */
.hero{position:relative;text-align:center;padding:calc(16px + env(safe-area-inset-top)) 16px 14px;background:linear-gradient(180deg,#000 0%,rgba(0,0,0,.6) 100%);border-bottom:1px solid var(--line)}
.hero::after{content:"";position:absolute;left:50%;bottom:-1px;width:120px;height:2px;margin-left:-60px;background:var(--red);box-shadow:0 0 18px 2px rgba(175,33,32,.7)}
.logo{width:220px;height:auto;display:block;margin:0 auto 9px}
.badges{display:inline-flex;align-items:center;gap:10px;font-size:11.5px;font-weight:700;letter-spacing:1.1px;text-transform:uppercase;color:#d8d8dc;background:rgba(255,255,255,.05);border:1px solid var(--line);padding:6px 12px;border-radius:99px}
.badges i{width:4px;height:4px;border-radius:50%;background:var(--red2)}

main{padding:18px 16px calc(96px + env(safe-area-inset-bottom));max-width:620px;margin:0 auto}
.screen{animation:in .35s var(--ease)}
@keyframes in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
h1{font-size:26px;line-height:1.1;margin:0;font-weight:800;letter-spacing:-.4px}
.count{font-size:12px;color:var(--mut);font-weight:600;letter-spacing:.6px;text-transform:uppercase}
.lead{color:var(--mut);margin:-4px 0 16px}

/* search + chips */
.search{display:flex;align-items:center;gap:10px;background:var(--s2);border:1px solid var(--line);border-radius:14px;padding:0 14px;transition:border-color .2s,box-shadow .2s}
.search:focus-within{border-color:var(--red);box-shadow:0 0 0 3px rgba(175,33,32,.25)}
.search svg{color:var(--mut);width:20px;height:20px}
.search input{flex:1;min-width:0;background:none;border:0;color:var(--tx);font-size:16px;padding:14px 0;outline:none}
.search input::placeholder{color:#6f6f77}
.chips{display:flex;gap:8px;overflow-x:auto;padding:12px 2px 2px;margin:0 -16px;padding-left:16px;padding-right:16px;scrollbar-width:none;scroll-snap-type:x proximity}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;scroll-snap-align:start;background:var(--s2);color:#e6e6ea;border:1px solid var(--line);border-radius:99px;padding:9px 15px;font:600 14px/1 var(--ff);cursor:pointer;transition:background .2s,border-color .2s,color .2s,transform .1s}
.chip:active{transform:scale(.96)}
.chip[aria-pressed="true"]{background:var(--red);border-color:var(--red);color:#fff;box-shadow:0 4px 14px rgba(175,33,32,.35)}
.sizes{padding-top:8px}
.sizes .chip{padding:7px 12px;font-size:13px;background:transparent}
.sizes .chip[aria-pressed="true"]{background:#fff;color:#000;border-color:#fff;box-shadow:none}

/* product grid */
.grid{list-style:none;margin:14px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.card{animation:up .4s var(--ease) both}
@keyframes up{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.card a{display:flex;flex-direction:column;height:100%;background:var(--s1);border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;color:var(--tx);transition:transform .15s,border-color .2s}
.card a:active{transform:scale(.98)}
.card a:hover{border-color:#3a3a40}
.ph{position:relative;aspect-ratio:1/1;background:linear-gradient(180deg,#fff,#eceef0);display:flex;align-items:center;justify-content:center}
.ph img{width:88%;height:88%;object-fit:contain}
.pk{position:absolute;left:8px;top:8px;background:#000;color:#fff;font-size:10.5px;font-weight:800;letter-spacing:.8px;padding:4px 7px;border-radius:6px}
.dz{position:absolute;right:8px;top:8px;background:var(--red);color:#fff;font-size:11px;font-weight:800;padding:4px 7px;border-radius:6px}
.bd{padding:10px 11px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.ct{font-size:10.5px;font-weight:700;letter-spacing:.9px;text-transform:uppercase;color:#ff6b69}
.t{font-size:13.5px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.pr{margin-top:auto;font-size:17px;font-weight:800;letter-spacing:-.2px}
.pr small{font-size:11px;font-weight:600;color:var(--mut);margin-right:3px;letter-spacing:.3px;text-transform:uppercase}
.empty{grid-column:1/-1;text-align:center;color:var(--mut);padding:30px 10px}
.btn{display:block;width:100%;margin:16px 0 0;padding:14px;border-radius:14px;font:700 15px/1 var(--ff);cursor:pointer;background:var(--s2);color:var(--tx);border:1px solid var(--line)}
.foot{font-size:12.5px;color:var(--mut);text-align:center;margin:16px 8px 0}

/* calculator */
.gauges{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.gauge{position:relative;background:linear-gradient(180deg,var(--s2),var(--s1));border:1px solid var(--line);border-radius:18px;padding:14px 10px 12px;text-align:center;overflow:hidden}
.gauge::before{content:"";position:absolute;inset:auto 0 0 0;height:3px;background:var(--red)}
.gauge svg{width:100%;height:auto;display:block}
.gauge path{fill:none;stroke-width:9;stroke-linecap:round}
.gauge .trk{stroke:#2e2e33}
.gauge .val{stroke:var(--red2);stroke-dasharray:100;stroke-dashoffset:100;transition:stroke-dashoffset .6s var(--ease);filter:drop-shadow(0 0 4px rgba(212,48,46,.6))}
.read{margin-top:-30px}
.read b{display:block;font-size:31px;font-weight:800;letter-spacing:-.8px;line-height:1;font-variant-numeric:tabular-nums}
.read span{display:block;margin-top:5px;font-size:11px;font-weight:700;letter-spacing:1.2px;color:var(--mut);text-transform:uppercase}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}
.stats div{background:var(--s1);border:1px solid var(--line);border-radius:12px;padding:9px 12px}
.stats span{display:block;font-size:11px;color:var(--mut);font-weight:600;letter-spacing:.5px;text-transform:uppercase}
.stats b{font-size:16px;font-variant-numeric:tabular-nums}
.warn{background:rgba(240,170,60,.1);border:1px solid rgba(240,170,60,.45);color:#f4d29a;border-radius:12px;padding:10px 12px;font-size:13.5px;margin:0 0 12px}
.panel{background:var(--s1);border:1px solid var(--line);border-radius:18px;padding:14px;margin-bottom:12px}
.fld{display:block;font-size:11.5px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--mut);margin-bottom:14px}
.panel>.fld:last-child,.two .fld{margin-bottom:0}
.lab{display:block}
select,input[type=number]{display:block;width:100%;margin-top:7px;font:500 16px/1.2 var(--ff);color:var(--tx);background:var(--s2);border:1px solid var(--line);border-radius:12px;padding:12px;-webkit-appearance:none;appearance:none;text-transform:none;letter-spacing:0}
select{background-image:linear-gradient(45deg,transparent 50%,#aaa 50%),linear-gradient(135deg,#aaa 50%,transparent 50%);background-position:calc(100% - 18px) 52%,calc(100% - 13px) 52%;background-size:5px 5px;background-repeat:no-repeat;padding-right:32px}
select:focus,input:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(175,33,32,.25)}
optgroup,option{background:#1c1c1f;color:#f3f3f4}
.seg{display:flex;gap:6px;margin-top:7px;background:var(--s2);border:1px solid var(--line);border-radius:12px;padding:4px}
.seg button{flex:1;min-width:0;border:0;background:transparent;color:#d6d6da;font:700 14px/1 var(--ff);padding:10px 4px;border-radius:9px;cursor:pointer;transition:background .2s,color .2s;text-transform:none;letter-spacing:0}
.seg button[aria-checked="true"]{background:var(--red);color:#fff;box-shadow:0 3px 10px rgba(175,33,32,.4)}
.seg.wrap{flex-wrap:wrap}
.seg.wrap button{flex:1 0 22%}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.how summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between}
.how summary::after{content:"+";color:var(--red2);font-size:20px;line-height:1}
.how[open] summary::after{content:"–"}
.how p{font-size:14px;color:#c4c4ca;margin:10px 0 0}

/* contact */
.act{display:flex;align-items:center;gap:14px;background:var(--s1);border:1px solid var(--line);border-radius:16px;padding:16px;margin-bottom:10px;text-decoration:none;color:var(--tx);transition:transform .12s}
.act:active{transform:scale(.98)}
.act svg{width:26px;height:26px;color:#ff6b69}
.act span{flex:1;font-size:15px;color:#c9c9ce}
.act b{display:block;font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--mut)}
.act.red{background:linear-gradient(135deg,var(--red2),var(--red));border-color:var(--red);box-shadow:0 8px 24px rgba(175,33,32,.35)}
.act.red svg,.act.red span,.act.red b{color:#fff}
.act.red span{font-size:20px;font-weight:800}
.act .go{width:18px;height:18px;color:var(--mut)}
.ship .row{display:flex;align-items:center;gap:16px}
.ship .row svg{width:28px;height:28px;color:#ff6b69}
.ship .row div{flex:1}
.ship b,.usa b{display:block;font-size:12px;letter-spacing:.8px;text-transform:uppercase;color:var(--mut)}
.ship span{font-size:20px;font-weight:800}
.usa b{font-size:15px;color:var(--tx);letter-spacing:.3px;text-transform:none;margin-bottom:3px}
.usa span{color:#c4c4ca;font-size:14px}

/* tab bar */
.tabs{position:fixed;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));display:flex;max-width:520px;margin:0 auto;background:rgba(20,20,22,.82);-webkit-backdrop-filter:blur(16px) saturate(1.4);backdrop-filter:blur(16px) saturate(1.4);border:1px solid #33333a;border-radius:22px;padding:6px;box-shadow:0 10px 30px rgba(0,0,0,.6);z-index:5}
.tabs a{position:relative;z-index:1;flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;color:#a5a5ad;text-decoration:none;font-size:11.5px;font-weight:700;letter-spacing:.3px;padding:8px 0 7px;transition:color .25s}
.tabs a.on{color:#fff}
.tabs svg{width:22px;height:22px}
.pill{position:absolute;top:6px;bottom:6px;left:6px;width:calc((100% - 12px)/3);border-radius:16px;background:linear-gradient(135deg,var(--red2),var(--red));box-shadow:0 4px 16px rgba(175,33,32,.45);transition:transform .35s var(--ease)}

/* install banner + sheet */
.inst{display:flex;align-items:center;gap:11px;background:linear-gradient(135deg,#1d1d20,#151517);border:1px solid #3a2224;border-radius:16px;padding:10px 8px 10px 10px;margin:0 0 16px;box-shadow:inset 3px 0 0 var(--red);animation:in .35s var(--ease)}
.inst img{width:44px;height:44px;border-radius:11px;flex:none}
.inst .it{flex:1;min-width:0}
.inst b{display:block;font-size:15px}
.inst span{display:block;font-size:12.5px;color:var(--mut);line-height:1.3}
.ib{display:inline-flex;align-items:center;gap:6px;flex:none;background:var(--red);color:#fff;border:0;border-radius:11px;padding:10px 13px;font:800 14px/1 var(--ff);cursor:pointer;box-shadow:0 4px 14px rgba(175,33,32,.4)}
.ib svg{width:17px;height:17px}
.ix{flex:none;background:none;border:0;color:#77777f;padding:6px;cursor:pointer;border-radius:8px}
.ix svg{width:16px;height:16px;display:block}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.6);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:20;animation:fade .25s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:21;max-width:560px;margin:0 auto;background:#151517;border:1px solid #303036;border-bottom:0;border-radius:24px 24px 0 0;padding:10px 20px calc(20px + env(safe-area-inset-bottom));box-shadow:0 -20px 50px rgba(0,0,0,.6);animation:rise .38s var(--ease);outline:none}
@keyframes rise{from{transform:translateY(100%)}to{transform:none}}
.grab{width:40px;height:5px;border-radius:3px;background:#3a3a40;margin:0 auto 12px}
.sx{position:absolute;right:12px;top:12px;background:#222226;border:0;color:#bbb;border-radius:50%;width:34px;height:34px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.sx svg{width:16px;height:16px}
.sh-head{display:flex;align-items:center;gap:14px;margin:4px 0 18px}
.sh-head img{border-radius:15px;box-shadow:0 6px 18px rgba(0,0,0,.6),0 0 0 1px #333}
.sh-head h2{margin:0;font-size:20px;color:var(--tx);text-transform:none;letter-spacing:-.2px}
.sh-head span{font-size:13px;color:var(--mut)}
.big-ib{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;background:linear-gradient(135deg,var(--red2),var(--red));color:#fff;border:0;border-radius:16px;padding:17px;font:800 18px/1 var(--ff);cursor:pointer;box-shadow:0 10px 28px rgba(175,33,32,.45)}
.big-ib svg{width:22px;height:22px}
.big-ib.alt{background:#232327;box-shadow:none;border:1px solid #38383e;font-size:16px;padding:14px;margin-top:6px}
.sm{font-size:12.5px;color:var(--mut);text-align:center;margin:10px 0 0}
.lead2{margin:0 0 10px;color:#d4d4d8}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.steps li{display:flex;align-items:flex-start;gap:12px;background:#1c1c1f;border:1px solid var(--line);border-radius:14px;padding:12px;font-size:15.5px;line-height:1.4}
.steps .n{flex:none;width:26px;height:26px;border-radius:50%;background:var(--red);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center}
.steps small{display:block;color:var(--mut);font-size:12.5px;margin-top:2px}
.ico{display:inline-flex;vertical-align:-5px;background:#2a2a2f;border-radius:7px;padding:3px;margin-left:2px;color:#4ea1ff}
.ico svg{width:18px;height:18px}
.hint{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:12px;font-size:12.5px;color:#9fc8ff;animation:bob 1.6s ease-in-out infinite}
.hint svg{width:16px;height:16px}
@keyframes bob{50%{transform:translateY(4px)}}
.later{display:block;margin:14px auto 0;background:none;border:0;color:var(--mut);font:600 14px/1 var(--ff);padding:8px 14px;cursor:pointer}
.sheet [data-v]{display:none}.sheet[data-mode="prompt"] [data-v="prompt"],.sheet[data-mode="ios"] [data-v="ios"],.sheet[data-mode="ios-other"] [data-v="ios-other"],.sheet[data-mode="other"] [data-v="other"]{display:block}
body.lock{overflow:hidden}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
@media (min-width:560px){.grid{grid-template-columns:repeat(3,1fr)}}