:root{
  --ink:#110b24; --ink-2:#1d1640; --ink-3:#2a2156;
  --paper:#eef1f6; --white:#fff; --text:#15132a; --muted:#4b4968; --line:#d3d8e3;
  --hot:#ff6a13; --hot-2:#ffc23d; --cold:#2bb8e6;
  --iron:linear-gradient(90deg,#2b0f5c,#9b1d6a 30%,#e2304b 50%,#ff7a1a 72%,#ffd34d);
  --ease-out:cubic-bezier(0.23,1,0.32,1); --ease-in-out:cubic-bezier(0.77,0,0.175,1);
  --head:"Chakra Petch",system-ui,sans-serif; --body:"Barlow",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:400 1.0625rem/1.6 var(--body);color:var(--text);background:var(--paper);overflow-x:hidden}
h1,h2,h3{font-family:var(--head);line-height:1.08;margin:0;letter-spacing:-.01em;text-wrap:balance}
h2{font-size:clamp(1.9rem,1.3rem + 2.2vw,3rem);font-weight:600}
h3{font-size:1.25rem;font-weight:600}
p{margin:0}
a{color:inherit}
img,svg{display:block}
:focus-visible{outline:3px solid var(--cold);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:#fff;color:var(--ink);padding:10px 14px;border-radius:6px;transition:transform 200ms var(--ease-out)}
.skip:focus{transform:translateY(72px)}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:6px;font:600 1rem/1 var(--head);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform 160ms var(--ease-out),background-color 200ms var(--ease-out),border-color 200ms var(--ease-out),color 200ms var(--ease-out)}
.btn:active{transform:scale(.97)}
.btn--lg{min-height:54px;padding:0 26px;font-size:1.0625rem}
.btn--hot{background:var(--hot);color:var(--ink)}
.btn--ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn--ink{background:var(--ink);color:#fff}
@media (hover:hover) and (pointer:fine){
  .btn--hot:hover{background:#ff8636}
  .btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
  .btn--ink:hover{background:var(--ink-3)}
  .nav a:hover{color:#fff}
  .svc__row:hover .svc__icon svg{stroke:var(--hot)}
}

/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(17,11,36,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.top__in{max-width:1360px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 1.15rem/1 var(--head);margin-right:auto}
.brand svg{width:34px;height:34px}
.brand small{display:block;font:500 .78rem/1.3 var(--body);color:#b9b3d6;letter-spacing:.01em}
.nav{display:flex;gap:24px;align-items:center}
.nav a{text-decoration:none;color:#cfc9ea;font-weight:500;transition:color 160ms var(--ease-out)}
.nav__call{font-family:var(--head);color:#fff!important;font-weight:600}
.burger{display:none}

/* hero */
.hero{background:var(--ink);color:#fff;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center;padding:56px max(24px,calc((100vw - 1360px)/2 + 24px)) 72px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--iron)}
.hero__live{display:inline-flex;align-items:center;gap:10px;font:500 .95rem/1 var(--body);color:#d6d1ef;margin-bottom:22px}
.dot{width:9px;height:9px;border-radius:50%;background:#3ee08a;box-shadow:0 0 0 0 rgba(62,224,138,.5);animation:pulse 2.4s var(--ease-out) infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(62,224,138,.55)}70%,100%{box-shadow:0 0 0 10px rgba(62,224,138,0)}}
.hero h1{font-size:clamp(2.3rem,1.4rem + 3.2vw,4.1rem);font-weight:700;letter-spacing:-.02em}
.hero__sub{margin-top:20px;font-size:1.15rem;color:#d6d1ef;max-width:34em}
.hero__ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__facts{list-style:none;padding:0;margin:36px 0 0;display:grid;grid-template-columns:repeat(3,auto);gap:22px;color:#b9b3d6;font-size:.92rem;line-height:1.35}
.hero__facts b{display:block;font:600 1.35rem/1.2 var(--head);color:#fff}

/* camera */
.cam{margin:0}
.cam__frame{position:relative;aspect-ratio:16/10;border-radius:10px;overflow:hidden;background:#0a0618;box-shadow:0 0 0 1px rgba(255,255,255,.1),0 30px 80px -20px rgba(226,48,75,.35);touch-action:pan-y;cursor:none}
#heat{position:absolute;inset:0;width:100%;height:100%;image-rendering:auto}
.cam__house{position:absolute;inset:0;width:100%;height:100%;mix-blend-mode:screen}
.hud{position:absolute;inset:0;pointer-events:none;font:600 .78rem/1 var(--head);color:#fff;letter-spacing:.06em}
.hud__tl{position:absolute;left:22px;top:20px;display:flex;align-items:center;gap:4px}
.hud__tr{position:absolute;right:58px;top:20px;opacity:.8}
.rec{width:8px;height:8px;border-radius:50%;background:#ff3b3b;margin-right:4px;animation:blink 1.6s steps(2,start) infinite}
@keyframes blink{to{visibility:hidden}}
.corner{position:absolute;width:22px;height:22px;border:2px solid rgba(255,255,255,.75)}
.c1{left:10px;top:10px;border-right:0;border-bottom:0}.c2{right:10px;top:10px;border-left:0;border-bottom:0}
.c3{left:10px;bottom:10px;border-right:0;border-top:0}.c4{right:10px;bottom:10px;border-left:0;border-top:0}
.probe{position:absolute;left:0;top:0;will-change:transform}
.probe__x{position:absolute;left:-18px;top:-18px;width:36px;height:36px;border:2px solid #fff;border-radius:50%}
.probe__x::before,.probe__x::after{content:"";position:absolute;background:#fff}
.probe__x::before{left:50%;top:-8px;bottom:-8px;width:2px;margin-left:-1px;clip-path:polygon(0 0,100% 0,100% 30%,0 30%,0 70%,100% 70%,100% 100%,0 100%)}
.probe__x::after{top:50%;left:-8px;right:-8px;height:2px;margin-top:-1px;clip-path:polygon(0 0,30% 0,30% 100%,0 100%,0 0,70% 0,100% 0,100% 100%,70% 100%,70% 0)}
.probe.flip b{left:auto;right:24px}
.probe b{position:absolute;left:24px;top:-30px;font-size:.95rem;background:rgba(10,6,24,.72);padding:5px 7px;border-radius:4px;white-space:nowrap}
.scale{position:absolute;right:18px;top:52px;bottom:52px;width:28px;display:flex;flex-direction:column;align-items:center;gap:6px;font-size:.72rem}
.scale i{flex:1;width:10px;border-radius:2px;background:linear-gradient(0deg,#000,#2b0f5c,#9b1d6a,#e2304b,#ff7a1a,#ffd34d,#fffbe6)}
body[data-mode="cool"] .scale i{background:linear-gradient(0deg,#02081c,#08306e,#1270b8,#2bb8e6,#9fefff,#f4fdff)}
.cam__bar{display:flex;align-items:center;gap:18px;margin-top:16px;color:#cfc9ea;font-size:.95rem}
.seg{position:relative;display:inline-grid;grid-template-columns:1fr 1fr;background:var(--ink-2);border-radius:999px;padding:4px;flex:none;box-shadow:inset 0 0 0 1px rgba(255,255,255,.1)}
.seg button{position:relative;z-index:1;border:0;background:none;color:#cfc9ea;font:600 .95rem/1 var(--head);padding:10px 20px;border-radius:999px;cursor:pointer;transition:color 200ms var(--ease-out)}
.seg button[aria-checked="true"]{color:var(--ink)}
.seg__thumb{position:absolute;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:999px;background:var(--hot);transition:transform 260ms var(--ease-out),background-color 260ms var(--ease-out)}
body[data-mode="cool"] .seg__thumb{transform:translateX(100%);background:var(--cold)}

/* trust */
.trust{background:var(--white);border-bottom:1px solid var(--line)}
.trust ul{list-style:none;margin:0 auto;max-width:1200px;padding:28px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust li{display:flex;gap:14px;align-items:flex-start;font-size:.95rem;color:var(--muted);line-height:1.4}
.trust b{display:block;color:var(--text);font:600 1.05rem/1.3 var(--head)}
.trust svg{width:30px;height:30px;flex:none;fill:none;stroke:var(--ink);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* sections */
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:44px}
.sec-head p{color:var(--muted);max-width:36em}
.services{padding:96px 0}
.svc{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.svc__row{display:grid;grid-template-columns:64px 1fr auto;gap:28px;align-items:center;padding:26px 0;border-bottom:1px solid var(--line)}
.svc__icon svg{width:48px;height:48px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:stroke 200ms var(--ease-out)}
.svc__body p{color:var(--muted);max-width:44em;margin-top:6px}
.svc__price{font:700 1.9rem/1 var(--head);text-align:right;min-width:150px}
.svc__price small{display:block;font:500 .85rem/1.4 var(--body);color:var(--muted)}

.rebates{background:var(--ink-2);color:#fff;padding:88px 0;position:relative}
.rebates::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--iron)}
.rebates__in{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.rebates p{color:#d6d1ef;margin-top:16px;max-width:32em}
.rebates .fine{font-size:.88rem;color:#aaa3cc}
.calc{background:var(--white);color:var(--text);border-radius:10px;padding:32px;display:grid;gap:10px}
.calc label{font-weight:600}
.calc output{font:700 2.2rem/1 var(--head)}
.calc input[type=range]{width:100%;accent-color:var(--hot);height:32px;margin:6px 0 10px}
.calc__res{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:18px 0;border-top:1px solid var(--line);margin-bottom:8px}
.calc__res small{display:block;color:var(--muted);font-size:.88rem}
.calc__res b{font:700 1.7rem/1.2 var(--head)}
.calc .btn{width:100%}

.plan{padding:96px 0}
.plan__in{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.plan__card{background:var(--white);border-radius:10px;padding:40px;border:2px solid var(--ink);position:relative}
.plan__price{margin:14px 0 22px;color:var(--muted)}
.plan__price b{font:700 3rem/1 var(--head);color:var(--text);margin-right:6px}
.ticks{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:12px}
.ticks li{padding-left:30px;position:relative}
.ticks li::before{content:"";position:absolute;left:2px;top:.45em;width:14px;height:8px;border-left:2.5px solid var(--hot);border-bottom:2.5px solid var(--hot);transform:rotate(-45deg)}
.plan__why p{color:var(--muted);margin-top:12px}
.stats{display:flex;gap:40px;margin:28px 0 0}
.stats dt{font-size:.9rem;color:var(--muted)}
.stats dd{margin:0;font:700 2.2rem/1.1 var(--head)}

.steps{padding:88px 0;background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps h2{margin-bottom:40px}
.steps__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:s}
.steps__list li{counter-increment:s;position:relative;padding-top:58px}
.steps__list li::before{content:counter(s);position:absolute;top:0;left:0;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font:700 1.1rem/1 var(--head);background:var(--ink);color:#fff}
.steps__list li::after{content:"";position:absolute;top:20px;left:52px;right:-16px;height:2px;background:var(--iron);opacity:.5}
.steps__list li:last-child::after{display:none}
.steps__list p{color:var(--muted);margin-top:8px}

.reviews{padding:96px 0}
.sample{font-size:.85rem;color:var(--muted);justify-self:end}
.rev{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev figure{margin:0;background:var(--white);padding:28px;border-radius:10px;border-top:3px solid var(--hot);display:flex;flex-direction:column;gap:20px;justify-content:space-between}
.rev figure:nth-child(2){border-top-color:#e2304b}.rev figure:nth-child(3){border-top-color:#9b1d6a}
.rev blockquote{margin:0;font-size:1.05rem}
.rev figcaption{color:var(--muted);font-size:.92rem}
.rev figcaption b{display:block;color:var(--text);font-family:var(--head)}
.area{margin-top:48px;display:grid;grid-template-columns:200px 1fr;gap:24px;padding-top:28px;border-top:1px solid var(--line)}
.area p{color:var(--muted)}

.book{background:var(--ink);color:#fff;padding:96px 0;position:relative}
.book::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--iron)}
.book__in{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start}
.book__copy p{color:#d6d1ef;margin-top:16px;max-width:30em}
.book__urgent{padding:16px 18px;border-left:3px solid var(--hot);background:var(--ink-2);border-radius:0 6px 6px 0}
.book__urgent a{color:#fff;font-weight:600}
.form{position:relative;background:var(--white);color:var(--text);border-radius:10px;padding:32px}
.form__fields{display:grid;grid-template-columns:1fr 1fr;gap:18px;transition:opacity 220ms var(--ease-out),transform 220ms var(--ease-out)}
.f{display:grid;gap:6px}
.f label{font-weight:600;font-size:.95rem}
.f input,.f select{font:inherit;min-height:48px;padding:0 14px;border:1.5px solid #b9bfcd;border-radius:6px;background:#fff;color:var(--text);width:100%;transition:border-color 160ms var(--ease-out),box-shadow 160ms var(--ease-out)}
.f input:focus,.f select:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(43,184,230,.45)}
.f [aria-invalid="true"]{border-color:#c62828}
.form__btn{grid-column:1/-1;width:100%}
.form__err{grid-column:1/-1;color:#b3261e;font-weight:500;min-height:1.4em;font-size:.95rem}
.form__ok{position:absolute;inset:0;padding:40px;display:flex;flex-direction:column;justify-content:center;gap:14px;opacity:0;transform:scale(.96);pointer-events:none;visibility:hidden;transition:opacity 320ms var(--ease-out),transform 320ms var(--ease-out),visibility 0s 320ms}
.form__ok svg{width:56px;height:56px;fill:none;stroke:var(--hot);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.form__ok svg path{stroke-dasharray:40;stroke-dashoffset:40;transition:stroke-dashoffset 500ms 200ms var(--ease-out)}
.form__okT{font:700 1.6rem/1.2 var(--head)}
.form__ok p:last-child{color:var(--muted)}
.form.is-done .form__fields{opacity:0;transform:scale(.98);pointer-events:none}
.form.is-done .form__ok{opacity:1;transform:none;pointer-events:auto;visibility:visible;transition-delay:120ms,120ms,0s}
.form.is-done .form__ok svg path{stroke-dashoffset:0}

.faq{padding:96px 0}
.faq__in{display:grid;grid-template-columns:1fr 1.6fr;gap:56px}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:2px solid var(--ink)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;font:600 1.15rem/1.35 var(--head);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:6px;top:50%;width:12px;height:12px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:translateY(-70%) rotate(45deg);transition:transform 220ms var(--ease-out)}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 0 22px;color:var(--muted);max-width:42em}

.foot{background:var(--ink);color:#cfc9ea;padding:48px 0 120px;font-size:.95rem}
.foot__in{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.foot__in p+p{margin-top:8px}
.foot__brand{font:700 1.2rem/1.3 var(--head);color:#fff}
.mbar{display:none}

/* responsive */
@media (max-width:1100px){
  .hero{grid-template-columns:1fr;gap:40px;padding-top:40px}
  .trust ul{grid-template-columns:1fr 1fr}
  .steps__list{grid-template-columns:1fr 1fr;row-gap:40px}
  .steps__list li:nth-child(2)::after{display:none}
}
@media (max-width:860px){
  .burger{display:grid;place-content:center;gap:6px;width:46px;height:46px;border:0;background:var(--ink-2);border-radius:6px;cursor:pointer}
  .burger span{width:20px;height:2px;background:#fff;transition:transform 220ms var(--ease-out)}
  .burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
  .burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}
  .top__cta{display:none}
  .nav{position:fixed;left:0;right:0;top:68px;background:var(--ink);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 24px;border-bottom:1px solid rgba(255,255,255,.1);opacity:0;transform:translateY(-8px);visibility:hidden;transition:opacity 220ms var(--ease-out),transform 220ms var(--ease-out),visibility 0s 220ms}
  .nav.is-open{opacity:1;transform:none;visibility:visible;transition-delay:0s}
  .nav a{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:1.1rem}
  .sec-head,.rebates__in,.plan__in,.book__in,.faq__in{grid-template-columns:1fr;gap:28px}
  .sample{justify-self:start}
  .rev{grid-template-columns:1fr}
  .area{grid-template-columns:1fr;gap:8px}
  .mbar{display:grid;grid-template-columns:1fr 1.4fr;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(17,11,36,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.1)}
  .mbar .btn{min-height:50px}
}
@media (max-width:600px){
  .wrap,.top__in{padding:0 16px}
  .hero{padding:32px 16px 56px}
  .hero__ctas .btn{width:100%}
  .cam__frame{aspect-ratio:3/2}
  .hud__tr,.scale{display:none}
  .hero__sub{font-size:1.05rem}
  .hero__facts{grid-template-columns:repeat(3,1fr);gap:12px;font-size:.8rem}
  .hero__facts b{font-size:1.1rem}
  .cam__bar{flex-direction:column;align-items:flex-start;gap:12px}
  .trust ul{grid-template-columns:1fr;padding:24px 16px}
  .services,.plan,.reviews,.faq{padding:64px 0}
  .rebates,.steps,.book{padding:64px 0}
  .svc__row{grid-template-columns:48px 1fr;gap:16px}
  .svc__icon svg{width:40px;height:40px}
  .svc__price{grid-column:2;text-align:left;font-size:1.5rem;min-width:0}
  .steps__list{grid-template-columns:1fr}
  .steps__list li::after{display:none}
  .calc,.plan__card,.form{padding:24px}
  .form__fields{grid-template-columns:1fr}
  .form{min-height:470px}
  .form__ok{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
@media (min-width:641px) and (max-width:860px){.mbar{left:auto;width:min(440px,62%);border-left:1px solid rgba(255,255,255,.15)}}