/* ===== TOKENS ===== */
:root{
  --orange:#ff5722;
  --orange-soft:#ff7a4d;
  --ink:#16181c;
  --ink-2:#1f2228;
  --paper:#ffffff;
  --paper-2:#f5f6f8;
  --text:#2a2d33;
  --muted:#6b7280;
  --line:#e6e8ec;
  --radius:18px;
  --shadow:0 18px 50px -18px rgba(20,24,28,.28);
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:auto}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:'Manrope',sans-serif;font-weight:800;line-height:1.1;color:#1a1d22;letter-spacing:-.02em}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.wrap.narrow{max-width:820px}
.accent{color:var(--orange)}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:700;font-family:'Manrope',sans-serif;
  font-size:15px;cursor:pointer;border:2px solid transparent;transition:.25s ease;white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 26px -8px rgba(255,87,34,.6)}
.btn-primary:hover{background:#ff430a;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--orange);color:var(--orange)}
.btn-ghost:hover{background:var(--orange);color:#fff}
.btn-block{width:100%}

/* ===== HEADER ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(22,24,28,.0);backdrop-filter:blur(0);
  transition:background .35s ease,backdrop-filter .35s ease,box-shadow .35s ease;
}
.site-header.scrolled{background:rgba(22,24,28,.92);backdrop-filter:blur(12px);box-shadow:0 8px 30px -12px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:74px}
.brand img{height:34px;width:auto}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{color:#e7e9ee;font-size:15px;font-weight:500;position:relative;opacity:.85;transition:.2s}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:var(--orange);transition:right .25s}
.nav a:hover,.nav a.active{opacity:1}
.nav a.active::after,.nav a:hover::after{right:0}
.header-cta{padding:10px 22px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:26px;height:2px;background:#fff;border-radius:2px;transition:.3s}

/* ===== HERO ===== */
.hero{
  position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  background:radial-gradient(120% 90% at 70% 10%,#23262d 0%,#14161a 55%,#0e0f12 100%);
  color:#fff;padding:120px 0 40px;overflow:hidden;
}
.smoke-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}
.hero-glow{position:absolute;right:6%;top:34%;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,87,34,.28),transparent 65%);filter:blur(20px);z-index:1;pointer-events:none}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;flex:1}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,87,34,.14);color:var(--orange-soft);
  border:1px solid rgba(255,87,34,.35);padding:7px 16px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:22px}
.hero h1{color:#fff;font-size:clamp(34px,4.6vw,60px);margin-bottom:22px}
.lead{font-size:18px;color:#c4c8d0;max-width:540px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:42px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats strong{font-family:'Manrope';font-size:30px;color:var(--orange);font-weight:800}
.hero-stats span{font-size:13px;color:#9aa0aa}

/* product */
.hero-product{position:relative;display:flex;justify-content:center;perspective:1100px}
.product-tilt{position:relative;transform-style:preserve-3d;will-change:transform;transition:transform .12s ease-out}
.product-tilt img{filter:drop-shadow(0 40px 60px rgba(0,0,0,.6));max-height:62vh;width:auto}
.perf-badge{position:absolute;left:-30px;bottom:40px;display:flex;align-items:center;gap:12px;
  background:rgba(20,22,26,.85);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);
  padding:14px 20px;border-radius:16px;transform:translateZ(60px)}
.perf-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--orange);font-size:20px}
.perf-badge small{display:block;font-size:11px;color:#9aa0aa}
.perf-badge strong{font-family:'Manrope';font-size:20px;color:#fff}

.hero-chips{position:relative;z-index:3;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}
.chip{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:16px 18px}
.chip b{display:block;font-family:'Manrope';font-size:15px;color:#fff}
.chip span{font-size:12.5px;color:#9aa0aa}
.scroll-hint{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);z-index:3;
  font-size:12px;color:#8b909a;display:flex;flex-direction:column;align-items:center;gap:8px;letter-spacing:.1em;text-transform:uppercase}
.scroll-hint span{width:24px;height:38px;border:2px solid #565c66;border-radius:14px;position:relative}
.scroll-hint span::before{content:"";position:absolute;left:50%;top:7px;width:4px;height:7px;background:var(--orange);border-radius:2px;transform:translateX(-50%);animation:scrolldot 1.6s infinite}
@keyframes scrolldot{0%{opacity:0;top:7px}40%{opacity:1}80%{opacity:0;top:20px}}

/* ===== SECTIONS ===== */
.section{padding:96px 0}
.section.dark{background:var(--ink);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}
.section-head{text-align:center;max-width:760px;margin:0 auto 54px}
.section-head h2{font-size:clamp(26px,3.4vw,42px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:17px}
.section.dark .section-head p{color:#a7adb8}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}

.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.3s}
.card.problem{border-left:3px solid var(--orange)}
.card.problem:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card.problem h3{font-size:19px;margin-bottom:8px}
.card.problem p{color:var(--muted);font-size:15px}

/* flow */
.flow{display:flex;align-items:stretch;justify-content:center;gap:10px;flex-wrap:wrap}
.flow-step{flex:1;min-width:170px;background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:24px 20px;text-align:center}
.flow-step.accent-step{border-color:var(--orange);background:linear-gradient(180deg,rgba(255,87,34,.16),rgba(255,87,34,.04))}
.flow-num{font-family:'Manrope';font-size:13px;color:var(--orange);font-weight:700}
.flow-step h3{font-size:18px;margin:8px 0 4px}
.flow-step p{color:#a7adb8;font-size:14px}
.flow-arrow{display:flex;align-items:center;color:var(--orange);font-size:24px;font-weight:700}

/* models */
.card.model{padding:0;overflow:hidden;display:flex;flex-direction:column}
.card.model:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.model-img{background:var(--paper-2);aspect-ratio:16/11;display:grid;place-items:center;padding:24px}
.model-img img{max-height:100%;width:auto;object-fit:contain}
.model-body{padding:26px;display:flex;flex-direction:column;flex:1}
.model-body h3{font-size:21px;margin-bottom:8px}
.model-body>p{color:var(--muted);font-size:15px;margin-bottom:18px}
.specs-list{list-style:none;margin-bottom:22px}
.specs-list li{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.specs-list span{color:var(--muted)}
.specs-list b{font-family:'Manrope';color:#1a1d22}
.model-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px}
.price small{display:block;font-size:12px;color:var(--muted)}
.price strong{font-family:'Manrope';font-size:26px;color:var(--orange)}
.model-help{margin-top:30px;background:var(--ink);color:#fff;border-radius:var(--radius);padding:28px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.model-help h3{color:#fff;font-size:22px}
.model-help p{color:#a7adb8}

/* specs / construction */
.specs-split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.parts-list,.check-list{list-style:none}
.parts-list li{display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--ink-2);border:1px solid rgba(255,255,255,.07);border-radius:12px;margin-bottom:10px;font-size:15px}
.parts-list i{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--orange);color:#fff;font-style:normal;font-family:'Manrope';font-weight:700;flex:none}
.check-list li{position:relative;padding:11px 0 11px 34px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.08)}
.check-list li::before{content:"✓";position:absolute;left:0;top:11px;color:var(--orange);font-weight:800}
.note{margin-top:18px;color:#8b909a;font-size:13.5px}

/* applications */
.apps-grid figure{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:var(--paper-2)}
.apps-grid img{width:100%;height:100%;object-fit:cover;transition:.5s}
.app:hover img{transform:scale(1.07)}
.apps-grid figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 20px 18px;color:#fff;font-family:'Manrope';font-weight:700;
  background:linear-gradient(transparent,rgba(0,0,0,.8))}

/* why / features */
.card.feature{text-align:center;padding:34px 24px}
.card.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--orange)}
.feat-ic{font-size:38px;display:block;margin-bottom:14px}
.card.feature h3{font-size:18px}

/* gallery */
.masonry{columns:4;column-gap:14px}
.masonry img{width:100%;border-radius:12px;margin-bottom:14px;break-inside:avoid;transition:.4s}
.masonry img:hover{transform:scale(1.03)}

/* reviews */
.reviews-track{display:flex;gap:20px;overflow-x:auto;padding:6px 2px 26px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.reviews-track::-webkit-scrollbar{height:8px}
.reviews-track::-webkit-scrollbar-thumb{background:#d4d7dd;border-radius:8px}
.review{min-width:340px;max-width:340px;scroll-snap-align:start;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column}
.review .stars{color:var(--orange);margin-bottom:12px;letter-spacing:2px}
.review p{font-size:15px;color:var(--text);flex:1;margin-bottom:16px}
.review .who{font-family:'Manrope';font-weight:700;color:#1a1d22}
.review .meta{font-size:13px;color:var(--muted)}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:14px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 24px;font-family:'Manrope';font-weight:600;font-size:17px;color:#fff;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--orange);font-size:24px;transition:.3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 24px 22px;color:#a7adb8;font-size:15px}

/* contact */
.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:24px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.contact-copy{background:var(--ink);color:#fff;padding:48px}
.contact-copy h2{color:#fff;font-size:30px;margin-bottom:14px}
.contact-copy p{color:#a7adb8;margin-bottom:26px}
.contact-info{list-style:none;display:flex;flex-direction:column;gap:14px}
.contact-info li{display:flex;align-items:center;gap:12px;color:#dfe2e8}
.contact-info span{font-size:18px}
.contact-form{padding:48px;display:flex;flex-direction:column;gap:14px;background:var(--paper)}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:12px;font-family:inherit;font-size:15px;background:var(--paper-2);transition:.2s}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--orange);background:#fff}
.contact-form small{color:var(--muted);font-size:12px;text-align:center}

/* footer */
.site-footer{background:#0e0f12;color:#c4c8d0;padding:64px 0 0}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.footer-logo{height:30px;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col p{font-size:14px;color:#9aa0aa;margin-bottom:14px}
.footer-col a,.footer-col span{display:block;font-size:14px;color:#a7adb8;margin-bottom:10px;transition:.2s}
.footer-col a:hover{color:var(--orange)}
.footer-col .btn{color:#fff;margin-top:6px}
.footer-tag{color:var(--orange-soft);font-size:13px;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:48px;padding:22px 24px;font-size:13px;color:#7a808a;text-align:center}

/* ===== VIDEO BLOCK ===== */
.video-frame{position:relative;max-width:900px;margin:0 auto;aspect-ratio:16/9;border-radius:20px;overflow:hidden;
  background:#000;box-shadow:0 36px 80px -28px rgba(0,0,0,.5);border:1px solid var(--line)}
.video-frame video{width:100%;height:100%;object-fit:cover;display:block}
.video-play{position:absolute;inset:0;display:grid;place-items:center;border:0;cursor:pointer;
  background:linear-gradient(180deg,rgba(0,0,0,.15),rgba(0,0,0,.35));transition:opacity .3s,background .3s}
.video-play:hover{background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.25))}
.video-play span{width:86px;height:86px;border-radius:50%;background:var(--orange);display:grid;place-items:center;
  box-shadow:0 14px 38px -8px rgba(255,87,34,.75);transition:transform .25s}
.video-play span::before{content:"";border-style:solid;border-width:15px 0 15px 26px;
  border-color:transparent transparent transparent #fff;margin-left:7px}
.video-play:hover span{transform:scale(1.09)}
.video-frame.playing .video-play{opacity:0;pointer-events:none}

/* ===== INTERACTIVE FIREPLACE DEMO ===== */
.demo-stage{position:relative;max-width:940px;margin:0 auto;aspect-ratio:16/10;border-radius:22px;overflow:hidden;
  border:1px solid rgba(255,255,255,.08);box-shadow:0 40px 90px -30px rgba(0,0,0,.75);
  background:linear-gradient(180deg,#2b2620 0%,#201b16 68%,#181410 100%)}
.room{position:absolute;inset:0}
.chimney-breast{position:absolute;left:50%;transform:translateX(-50%);top:0;width:30%;height:32%;
  background:linear-gradient(180deg,#241f1a,#2a241e);box-shadow:inset 0 0 24px rgba(0,0,0,.5)}
.room-floor{position:absolute;left:0;right:0;bottom:0;height:24%;
  background:linear-gradient(180deg,#3c2d1f,#281d13);box-shadow:inset 0 8px 22px rgba(0,0,0,.45)}
.room-floor::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:rgba(255,196,130,.16)}
.fireplace{position:absolute;left:50%;transform:translateX(-50%);bottom:24%;width:34%;height:50%;
  background:linear-gradient(180deg,#cfc4af,#9f927a);border-radius:10px;box-shadow:0 20px 44px rgba(0,0,0,.55)}
.mantel{position:absolute;top:-7%;left:-9%;width:118%;height:13%;background:linear-gradient(180deg,#e0d5c0,#bcaf95);
  border-radius:6px;box-shadow:0 7px 16px rgba(0,0,0,.45)}
.firebox{position:absolute;left:15%;right:15%;top:20%;bottom:0;overflow:hidden;border-radius:8px 8px 0 0;
  background:radial-gradient(130% 100% at 50% 100%,#3a2310,#0f0a06 72%);box-shadow:inset 0 0 34px rgba(0,0,0,.85)}
.logs{position:absolute;left:14%;right:14%;bottom:6%;height:14%;border-radius:30px;
  background:linear-gradient(180deg,#5a3a22,#2c1a0e);box-shadow:0 2px 0 #1a0f07}
.ember{position:absolute;left:50%;bottom:4%;transform:translateX(-50%);width:70%;height:34%;
  background:radial-gradient(circle at 50% 100%,rgba(255,120,30,.85),rgba(255,90,20,0) 70%);filter:blur(3px)}
.flames{position:absolute;left:0;right:0;bottom:8%;height:60%;display:flex;justify-content:center;align-items:flex-end;gap:3%}
.flames span{display:block;width:16%;height:78%;border-radius:50% 50% 42% 42%;transform-origin:50% 100%;
  background:linear-gradient(0deg,#ff4a17 0%,#ff7a1f 42%,#ffce4a 100%);filter:blur(.6px);mix-blend-mode:screen;
  animation:flame 1.6s ease-in-out infinite}
.flames span:nth-child(1){height:62%;animation-delay:.2s}
.flames span:nth-child(2){height:88%;animation-delay:0s}
.flames span:nth-child(3){height:66%;animation-delay:.45s}
@keyframes flame{0%,100%{transform:scaleY(1) scaleX(1) translateY(0);opacity:.88}
  50%{transform:scaleY(1.18) scaleX(.92) translateY(-6%);opacity:1}}
.demo-haze{position:absolute;inset:0;pointer-events:none;transition:opacity 1.3s ease;
  background:radial-gradient(85% 75% at 50% 42%,rgba(196,198,204,.5),rgba(176,178,184,.32))}
.demo-stage.is-clear .demo-haze{opacity:0}
.demo-smoke{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.demo-status{position:absolute;top:14px;left:14px;display:flex;align-items:center;gap:9px;
  background:rgba(0,0,0,.5);backdrop-filter:blur(6px);padding:8px 15px;border-radius:999px;
  font-size:13px;font-weight:600;color:#fff;border:1px solid rgba(255,255,255,.13)}
.demo-status .dot{width:9px;height:9px;border-radius:50%;background:#e6a637;box-shadow:0 0 10px #e6a637;transition:.4s}
.demo-stage.is-clear .demo-status .dot{background:#37d07a;box-shadow:0 0 10px #37d07a}
.demo-controls{text-align:center;margin-top:32px}
.demo-btn{display:inline-flex;align-items:center;gap:13px;padding:19px 40px;font-size:18px;font-family:'Manrope',sans-serif;
  font-weight:800;color:#fff;background:linear-gradient(135deg,#ff5722,#ff7e42);border:0;border-radius:999px;cursor:pointer;
  box-shadow:0 16px 42px -10px rgba(255,87,34,.7);transition:transform .2s,background .3s,box-shadow .3s;animation:btnpulse 2.3s infinite}
.demo-btn:hover{transform:translateY(-2px)}
.demo-btn-ic{font-size:20px;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.22)}
.demo-btn.is-on{background:linear-gradient(135deg,#333b45,#3e4753);animation:none;box-shadow:0 12px 30px -12px rgba(0,0,0,.6)}
@keyframes btnpulse{0%,100%{box-shadow:0 16px 42px -10px rgba(255,87,34,.7)}50%{box-shadow:0 18px 56px -6px rgba(255,87,34,.95)}}
.demo-hint{margin-top:15px;color:#9aa0aa;font-size:14px}

/* ===== MODEL "MORE" BUTTON ===== */
.link-more{
  background:none;border:0;cursor:pointer;font-family:'Manrope',sans-serif;font-weight:700;
  color:var(--orange);font-size:14.5px;padding:0;margin-bottom:20px;text-align:left;
  display:inline-flex;align-items:center;gap:6px;transition:gap .2s,color .2s;
}
.link-more:hover{gap:11px;color:#ff430a}

/* ===== MODAL ===== */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px;
  visibility:hidden;opacity:0;transition:opacity .3s ease,visibility .3s}
.modal.open{visibility:visible;opacity:1}
.modal-overlay{position:absolute;inset:0;background:rgba(10,11,14,.72);backdrop-filter:blur(4px)}
.modal-dialog{position:relative;background:var(--paper);border-radius:22px;max-width:760px;width:100%;
  max-height:90vh;overflow:auto;box-shadow:0 40px 90px -30px rgba(0,0,0,.6);
  transform:translateY(26px) scale(.98);transition:transform .35s cubic-bezier(.16,1,.3,1)}
.modal.open .modal-dialog{transform:none}
.modal-close{position:absolute;top:14px;right:16px;z-index:2;width:40px;height:40px;border-radius:50%;
  border:0;background:rgba(0,0,0,.06);color:#1a1d22;font-size:26px;line-height:1;cursor:pointer;transition:.2s}
.modal-close:hover{background:var(--orange);color:#fff;transform:rotate(90deg)}
.modal-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:0}
.modal-img{background:var(--paper-2);display:grid;place-items:center;padding:30px;border-radius:22px 0 0 22px}
.modal-img img{max-height:320px;width:auto;object-fit:contain}
.modal-info{padding:38px 36px 32px}
.modal-info h3{font-size:24px;margin-bottom:6px}
.modal-badge{display:inline-block;background:rgba(255,87,34,.12);color:var(--orange);font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:999px;margin-bottom:14px}
.modal-desc{color:var(--muted);font-size:15px;margin-bottom:20px}
.modal-info .specs-list{margin-bottom:18px}
.modal-extra{list-style:none;margin-bottom:24px}
.modal-extra li{position:relative;padding:7px 0 7px 26px;font-size:14px;color:var(--text)}
.modal-extra li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:800}
.modal-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:20px}

/* ===== MESSENGER PICKER ===== */
.messenger-pick{display:flex;flex-direction:column;gap:10px}
.messenger-label{font-size:13.5px;color:var(--muted);font-weight:600}
.messenger-label em{color:var(--orange);font-style:normal}
.messenger-opts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.msg-opt{position:relative;display:flex;flex-direction:column;align-items:center;gap:7px;
  padding:14px 8px;border:2px solid var(--line);border-radius:14px;cursor:pointer;font-size:13px;font-weight:600;
  font-family:'Manrope',sans-serif;color:#3a3d44;background:var(--paper-2);transition:.2s;text-align:center}
.msg-opt input{position:absolute;opacity:0;pointer-events:none}
.msg-ic{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#fff;
  box-shadow:0 4px 10px rgba(0,0,0,.06);transition:.2s}
.msg-ic svg{width:22px;height:22px}
.msg-tg .msg-ic{color:#229ed9}
.msg-vb .msg-ic{color:#7360f2}
.msg-wa .msg-ic{color:#25d366}
.msg-opt:hover{border-color:#c9ccd2;transform:translateY(-2px)}
.msg-opt:has(input:checked){border-color:var(--orange);background:rgba(255,87,34,.07)}
.msg-opt:has(input:checked) .msg-ic{transform:scale(1.08)}
.msg-opt:has(input:checked)::after{content:"✓";position:absolute;top:6px;right:8px;color:var(--orange);font-weight:800;font-size:13px}
.messenger-error{display:none;color:#e23b2e;font-size:12.5px;font-weight:600}
.messenger-pick.invalid .messenger-error{display:block}
.messenger-pick.invalid .msg-opt{border-color:#f0b4ae}
.contact-form .field-err{border-color:#e23b2e;background:#fff5f4}

/* form success */
.form-success{text-align:center;padding:30px 10px}
.form-success-ic{width:62px;height:62px;border-radius:50%;background:var(--orange);color:#fff;
  font-size:32px;display:grid;place-items:center;margin:0 auto 18px;box-shadow:0 10px 26px -8px rgba(255,87,34,.6)}
.form-success h3{font-size:22px;margin-bottom:10px}
.form-success p{color:var(--muted);font-size:15px}

/* ===== REVEAL ANIM ===== */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ===== RESPONSIVE ===== */
@media (max-width:980px){
  .nav,.header-cta{display:none}
  .burger{display:flex}
  .nav.open{display:flex;position:fixed;top:74px;left:0;right:0;flex-direction:column;background:rgba(18,20,24,.98);
    backdrop-filter:blur(14px);padding:18px 24px;gap:6px;margin:0}
  .nav.open a{padding:12px 4px;font-size:17px;border-bottom:1px solid rgba(255,255,255,.06)}
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-copy{order:2}
  .hero-product{order:1}
  .product-tilt img{max-height:42vh}
  .hero-cta,.hero-stats{justify-content:center}
  .perf-badge{left:0}
  .hero-chips{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .specs-split,.contact-box,.flow{grid-template-columns:1fr}
  .contact-box{display:flex;flex-direction:column}
  .modal-grid{grid-template-columns:1fr}
  .modal-img{border-radius:22px 22px 0 0;padding:22px}
  .modal-img img{max-height:200px}
  .modal-info{padding:26px 24px}
  .demo-stage{aspect-ratio:4/3}
  .demo-btn{padding:16px 28px;font-size:16px}
  .masonry{columns:2}
  .footer-inner{grid-template-columns:1fr 1fr}
  .flow-arrow{transform:rotate(90deg)}
}
@media (max-width:560px){
  .section{padding:64px 0}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .hero-chips{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .masonry{columns:1}
  .footer-inner{grid-template-columns:1fr}
  .contact-copy,.contact-form{padding:30px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .scroll-hint span::before{animation:none}
}