:root{
    --ink:#12161c;          /* night steel base */
    --panel:#1b212b;        /* raised surface */
    --panel-2:#232b37;      /* card surface */
    --line:#333d4c;         /* hairline */
    --brass:#e9a83a;        /* keypad amber / brass */
    --brass-dim:#b9822a;
    --cream:#f3ecdd;        /* warm text */
    --muted:#9aa6b6;        /* secondary text */
    --alarm:#e5533d;        /* urgency, used sparingly */
    --solve:#54c08a;        /* resolved / check */
    --radius:14px;
    --maxw:1120px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth;overflow-x:hidden}
  body{
    font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
    background:var(--ink);
    color:var(--cream);
    line-height:1.65;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  .display{font-family:"Black Han Sans",sans-serif;font-weight:400;letter-spacing:-.01em;line-height:1.08}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
  a{color:inherit;text-decoration:none}
  section{position:relative}

  /* ---------- top bar ---------- */
  header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(18,22,28,.72);
    backdrop-filter:blur(12px);
    border-bottom:1px solid transparent;
    transition:border-color .3s,background .3s;
  }
  header.scrolled{border-bottom-color:var(--line);background:rgba(18,22,28,.9)}
  .bar{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em}
  .brand .keymark{
    width:30px;height:30px;border-radius:8px;flex:none;
    background:linear-gradient(145deg,var(--brass),var(--brass-dim));
    display:grid;place-items:center;color:#1a130a;font-weight:900;font-size:16px;
    box-shadow:0 0 0 1px rgba(233,168,58,.35),0 6px 18px -8px rgba(233,168,58,.7);
  }
  .brand small{color:var(--muted);font-weight:600;font-size:11px;letter-spacing:.06em;display:block;margin-top:-4px}
  .top-call{
    display:inline-flex;align-items:center;gap:9px;
    background:var(--brass);color:#1a130a;font-weight:800;font-size:15px;
    padding:10px 16px;border-radius:999px;letter-spacing:-.01em;
    box-shadow:0 8px 20px -10px rgba(233,168,58,.9);
    transition:transform .15s,box-shadow .15s;
  }
  .top-call:hover{transform:translateY(-1px);box-shadow:0 12px 26px -10px rgba(233,168,58,1)}
  .top-call .dot{width:8px;height:8px;border-radius:50%;background:var(--alarm);box-shadow:0 0 0 0 rgba(229,83,61,.7);animation:pulse 1.8s infinite}
  @keyframes pulse{0%{box-shadow:0 0 0 0 rgba(229,83,61,.7)}70%{box-shadow:0 0 0 8px rgba(229,83,61,0)}100%{box-shadow:0 0 0 0 rgba(229,83,61,0)}}

  /* ---------- hero ---------- */
  .hero{padding:120px 0 70px;position:relative;overflow:hidden}
  .hero::before{ /* ambient keypad glow */
    content:"";position:absolute;top:-10%;right:-8%;width:520px;height:520px;
    background:radial-gradient(circle,rgba(233,168,58,.16),transparent 62%);
    filter:blur(10px);pointer-events:none;
  }
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
  .hero-grid>*{min-width:0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;letter-spacing:.03em;color:var(--brass);
    border:1px solid rgba(233,168,58,.35);border-radius:999px;padding:6px 14px;margin-bottom:22px;
    background:rgba(233,168,58,.06);
  }
  .eyebrow b{color:var(--alarm)}
  .hero h1{font-size:clamp(40px,7vw,72px);margin-bottom:18px}
  .hero h1 .line2{color:var(--brass)}
  .hero p.lead{font-size:clamp(16px,2.2vw,19px);color:var(--muted);max-width:30em;margin-bottom:26px}
  .hero p.lead b{color:var(--cream);font-weight:700}
  .trust-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:6px}
  .chip{
    display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;
    background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 13px;color:var(--cream);
  }
  .chip svg{width:15px;height:15px;color:var(--solve);flex:none}

  /* ---------- keypad signature device ---------- */
  .device{
    background:linear-gradient(170deg,#252d39,#171c24);
    border:1px solid var(--line);border-radius:24px;padding:22px 22px 26px;
    box-shadow:0 40px 80px -30px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.05);
    max-width:340px;margin:0 auto;position:relative;overflow:hidden;
  }
  .device::after{content:"";position:absolute;inset:0;border-radius:24px;pointer-events:none;box-shadow:inset 0 0 0 1px rgba(233,168,58,.1)}
  .device .cap{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.12em;margin-bottom:12px}
  .device .cap .live{display:inline-flex;align-items:center;gap:6px;color:var(--solve)}
  .device .cap .live i{width:7px;height:7px;border-radius:50%;background:var(--solve);animation:blink 1.4s infinite}
  @keyframes blink{50%{opacity:.25}}
  .readout{
    background:#0d1116;border:1px solid #2c3644;border-radius:12px;
    padding:16px 14px;text-align:center;margin-bottom:16px;
    box-shadow:inset 0 2px 14px rgba(0,0,0,.6);
  }
  .readout .label{font-size:10.5px;letter-spacing:.22em;color:var(--muted);font-weight:700}
  .readout .num{
    font-family:"Black Han Sans",sans-serif;font-size:33px;letter-spacing:.04em;
    color:var(--brass);margin-top:4px;
    text-shadow:0 0 16px rgba(233,168,58,.55);font-variant-numeric:tabular-nums;
  }
  .keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
  .key{
    aspect-ratio:1/.72;border-radius:10px;background:#232b37;border:1px solid #313c4b;
    display:grid;place-items:center;font-weight:800;font-size:19px;color:var(--cream);
    transition:transform .1s,background .2s,color .2s,box-shadow .2s;user-select:none;
  }
  .key.lit{background:linear-gradient(160deg,var(--brass),var(--brass-dim));color:#1a130a;box-shadow:0 0 18px -2px rgba(233,168,58,.6)}
  .key small{font-size:9px;color:var(--muted);display:block;margin-top:-2px}
  .device-call{
    margin-top:16px;display:flex;align-items:center;justify-content:center;gap:10px;
    background:var(--brass);color:#1a130a;font-weight:900;font-size:18px;
    padding:15px;border-radius:12px;width:100%;letter-spacing:-.01em;
    box-shadow:0 14px 30px -12px rgba(233,168,58,.9);transition:transform .12s;
  }
  .device:hover .device-call{transform:translateY(-2px)}
  .device-note{text-align:center;color:var(--muted);font-size:12px;margin-top:11px}

  /* ---------- section scaffold ---------- */
  .sec{padding:74px 0}
  .sec-head{max-width:640px;margin-bottom:40px}
  .kicker{font-size:12.5px;font-weight:800;letter-spacing:.16em;color:var(--brass);margin-bottom:12px}
  .sec-head h2{font-size:clamp(27px,4vw,40px);font-weight:800;letter-spacing:-.02em;margin-bottom:12px}
  .sec-head p{color:var(--muted);font-size:16px}
  .band{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  /* ---------- services ---------- */
  .svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .svc{
    background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px 22px;
    transition:transform .2s,border-color .2s,box-shadow .2s;position:relative;overflow:hidden;
  }
  .svc:hover{transform:translateY(-4px);border-color:rgba(233,168,58,.45);box-shadow:0 24px 40px -24px rgba(0,0,0,.7)}
  .svc .ico{width:46px;height:46px;border-radius:12px;background:rgba(233,168,58,.12);display:grid;place-items:center;margin-bottom:16px;transition:background .28s ease,transform .28s ease,box-shadow .28s ease}
  .svc .ico svg{width:24px;height:24px;color:var(--brass);transition:color .28s ease}
  .svc:hover .ico{background:linear-gradient(150deg,var(--brass),var(--brass-dim));transform:scale(1.08) rotate(-4deg);box-shadow:0 10px 22px -8px rgba(233,168,58,.65)}
  .svc:hover .ico svg{color:#1a130a}
  .svc h3{font-size:19px;font-weight:800;margin-bottom:8px;letter-spacing:-.01em}
  .svc p{color:var(--muted);font-size:14.5px;line-height:1.6}
  .svc .tag{position:absolute;top:16px;right:16px;font-size:11px;font-weight:700;color:var(--alarm);border:1px solid rgba(229,83,61,.4);border-radius:999px;padding:3px 9px}

  /* ---------- why / stats ---------- */
  .why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:44px}
  .stat{text-align:center;padding:22px 12px;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius)}
  .stat .big{font-family:"Black Han Sans",sans-serif;font-size:clamp(34px,5vw,46px);color:var(--brass);line-height:1}
  .stat .lab{color:var(--muted);font-size:13.5px;margin-top:8px;font-weight:600}
  .why-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .why{display:flex;gap:14px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
  .why .n{width:32px;height:32px;flex:none;border-radius:9px;background:rgba(84,192,138,.14);display:grid;place-items:center;color:var(--solve)}
  .why .n svg{width:17px;height:17px}
  .why h4{font-size:16px;font-weight:800;margin-bottom:5px}
  .why p{color:var(--muted);font-size:14px}

  /* ---------- process (real sequence) ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
  .step{padding:26px 22px;position:relative}
  .step:not(:last-child)::after{content:"";position:absolute;top:44px;right:-1px;width:1px;height:calc(100% - 60px);background:var(--line)}
  .step .idx{font-family:"Black Han Sans",sans-serif;font-size:15px;color:#1a130a;background:var(--brass);width:34px;height:34px;border-radius:9px;display:grid;place-items:center;margin-bottom:16px}
  .step h4{font-size:17px;font-weight:800;margin-bottom:7px}
  .step p{color:var(--muted);font-size:14px}

  /* ---------- brands ---------- */
  .brands{display:flex;flex-wrap:wrap;gap:11px}
  .brand-pill{background:var(--panel-2);border:1px solid var(--line);border-radius:999px;padding:11px 20px;font-weight:700;font-size:15px;color:var(--cream)}
  .brand-pill span{color:var(--muted);font-weight:500;font-size:13px}

  /* ---------- regions ---------- */
  .region-wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:center}
  .region-tags{display:flex;flex-wrap:wrap;gap:10px}
  .region-tags b{background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:9px 15px;font-weight:700;font-size:15px}
  .region-tags b.hot{border-color:rgba(233,168,58,.5);color:var(--brass)}

  /* ---------- price ---------- */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
  .pcard{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
  .pcard h4{font-size:17px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:9px}
  .pcard h4 i{width:9px;height:9px;border-radius:2px;background:var(--brass);display:inline-block}
  .prow{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
  .prow:last-child{border-bottom:0}
  .prow span{color:var(--muted)}
  .prow b{color:var(--cream);font-weight:700}
  .price-note{color:var(--muted);font-size:13.5px;border-left:2px solid var(--brass);padding-left:14px}

  /* ---------- faq ---------- */
  .faq{max-width:820px;margin:0 auto}
  details{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:11px;overflow:hidden}
  details[open]{border-color:rgba(233,168,58,.4)}
  summary{list-style:none;cursor:pointer;padding:19px 22px;font-weight:700;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:14px}
  summary::-webkit-details-marker{display:none}
  summary .q{display:flex;gap:12px;align-items:baseline}
  summary .q em{color:var(--brass);font-style:normal;font-family:"Black Han Sans",sans-serif;font-size:15px;flex:none}
  summary .plus{color:var(--brass);font-size:22px;font-weight:400;transition:transform .25s;flex:none;line-height:1}
  details[open] summary .plus{transform:rotate(45deg)}
  details .a{padding:0 22px 20px 56px;color:var(--muted);font-size:14.5px;line-height:1.7}

  /* ---------- final CTA ---------- */
  .final{
    background:linear-gradient(150deg,#20272f,#161b21);
    border:1px solid var(--line);border-radius:24px;padding:48px 40px;text-align:center;position:relative;overflow:hidden;
  }
  .final::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% -20%,rgba(233,168,58,.18),transparent 60%);pointer-events:none}
  .final h2{font-size:clamp(26px,4.5vw,42px);font-weight:800;letter-spacing:-.02em;margin-bottom:14px;position:relative}
  .final p{color:var(--muted);font-size:16px;margin-bottom:28px;position:relative}
  .final .big-call{
    display:inline-flex;align-items:center;gap:14px;background:var(--brass);color:#1a130a;
    font-family:"Black Han Sans",sans-serif;font-size:clamp(26px,5vw,38px);
    padding:16px 34px;border-radius:16px;letter-spacing:.02em;position:relative;
    box-shadow:0 24px 50px -18px rgba(233,168,58,.9);transition:transform .15s;
  }
  .final .big-call:hover{transform:translateY(-3px) scale(1.01)}
  .final .big-call svg{width:32px;height:32px}
  .final .sub{margin-top:16px;color:var(--muted);font-size:14px;position:relative}

  /* ---------- footer ---------- */
  footer{border-top:1px solid var(--line);padding:44px 0 120px;color:var(--muted);font-size:14px}
  .foot-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
  .foot-brand{font-weight:800;font-size:18px;color:var(--cream);letter-spacing:-.02em;margin-bottom:10px}
  .foot-info b{color:var(--cream)}
  .foot-info div{margin-bottom:4px}
  .foot-copy{font-size:12.5px;opacity:.7;margin-top:26px}

  /* ---------- mobile sticky call ---------- */
  .mobile-call{
    position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:rgba(18,22,28,.92);backdrop-filter:blur(10px);border-top:1px solid var(--line);
  }
  .mobile-call a{
    display:flex;align-items:center;justify-content:center;gap:10px;
    background:var(--alarm);color:#fff;font-weight:900;font-size:18px;
    padding:15px;border-radius:12px;letter-spacing:-.01em;
  }
  .mobile-call a .dot{width:9px;height:9px;border-radius:50%;background:#fff;animation:pulse 1.8s infinite}

  /* ---------- free-vector illustrations (Tabler, MIT) ---------- */
  .ill{fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;display:block}
  /* ambient watermark illustration */
  .wm{position:absolute;color:var(--brass);opacity:.05;pointer-events:none;z-index:0}
  .wm svg{width:100%;height:100%}
  .hero .wm{width:300px;height:300px;left:-70px;bottom:-40px;transform:rotate(-12deg)}
  .final .wm{width:260px;height:260px;right:-40px;top:-50px;opacity:.09;color:var(--brass)}
  .hero .wrap,.final h2,.final p,.final .big-call,.final .sub{position:relative;z-index:1}

  /* ---------- situation cards (illustration-led) ---------- */
  .sit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .sit{
    background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);
    padding:30px 26px;transition:transform .2s,border-color .2s;display:flex;flex-direction:column;
    position:relative;overflow:hidden;
  }
  .sit>*{position:relative;z-index:2}
  .sit .ph{
    position:absolute;inset:0;z-index:0;background-position:center;background-size:cover;
    opacity:.14;transition:opacity .35s,transform .6s ease;
  }
  .sit::before{ /* keep text side readable over the photo */
    content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
    background:linear-gradient(115deg,rgba(35,43,55,.82) 40%,rgba(35,43,55,.15));
  }
  .sit:hover .ph{opacity:.26;transform:scale(1.06)}
  .sit:hover{transform:translateY(-4px);border-color:rgba(233,168,58,.45)}
  .sit .ill{width:56px;height:56px;color:var(--brass);margin-bottom:20px;stroke-width:1.35}
  .sit h3{font-size:20px;font-weight:800;margin-bottom:10px;letter-spacing:-.01em}
  .sit p{color:var(--muted);font-size:14.5px;line-height:1.6;flex:1}
  .sit .go{margin-top:18px;font-weight:700;font-size:14px;color:var(--brass);display:inline-flex;align-items:center;gap:6px}
  .sit .go svg{width:15px;height:15px;transition:transform .2s}
  .sit:hover .go svg{transform:translateX(4px)}

  /* ---------- gallery (real work photos) ---------- */
  .gal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  .gal{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/5;background:var(--panel)}
  .gal img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
  .gal:hover img{transform:scale(1.06)}
  .gal figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:34px 16px 14px;
    background:linear-gradient(to top,rgba(9,12,16,.92),rgba(9,12,16,.55) 55%,transparent);
    font-size:14px;font-weight:700;color:var(--cream);letter-spacing:-.01em;
  }
  .gal figcaption span{display:block;font-weight:500;font-size:12px;color:var(--brass);margin-bottom:3px;letter-spacing:.02em}

  /* meaningful strength icons */
  .why .n.big-ill{background:rgba(233,168,58,.12);color:var(--brass)}
  .why .n.big-ill .ill{width:18px;height:18px}

  /* ---------- consultation form ---------- */
  .form-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:44px;align-items:start}
  .form-intro .kicker{margin-bottom:12px}
  .form-intro h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
  .form-intro p{color:var(--muted);font-size:15.5px;margin-bottom:24px}
  .form-intro .call-alt{display:inline-flex;align-items:center;gap:11px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
  .form-intro .call-alt .ic{width:40px;height:40px;border-radius:10px;background:rgba(233,168,58,.12);display:grid;place-items:center;color:var(--brass);flex:none}
  .form-intro .call-alt .ic svg{width:20px;height:20px}
  .form-intro .call-alt b{display:block;font-size:18px;font-weight:800;color:var(--cream);letter-spacing:-.01em}
  .form-intro .call-alt span{font-size:12.5px;color:var(--muted)}
  .form-card{background:var(--panel-2);border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:0 30px 60px -34px rgba(0,0,0,.7)}
  .field{margin-bottom:15px}
  .field.two{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:15px}
  .field.two .field{margin-bottom:0}
  .form-card label{display:block;font-size:13px;font-weight:700;margin-bottom:7px;color:var(--cream)}
  .form-card label .req{color:var(--brass);margin-left:2px}
  .form-card input,.form-card select,.form-card textarea{
    width:100%;background:#0f141a;border:1px solid #2c3644;border-radius:10px;
    padding:12px 13px;color:var(--cream);font-family:inherit;font-size:15px;transition:border-color .2s,box-shadow .2s;
  }
  .form-card input::placeholder,.form-card textarea::placeholder{color:#5c6673}
  .form-card select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brass) 50%),linear-gradient(135deg,var(--brass) 50%,transparent 50%);background-position:calc(100% - 18px) 18px,calc(100% - 13px) 18px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
  .form-card input:focus,.form-card select:focus,.form-card textarea:focus{outline:none;border-color:var(--brass);box-shadow:0 0 0 3px rgba(233,168,58,.14)}
  .form-card textarea{min-height:92px;resize:vertical}
  .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
  .consent{display:flex;gap:9px;align-items:flex-start;font-size:12.5px;color:var(--muted);margin:4px 0 18px;line-height:1.5}
  .consent input{width:17px;height:17px;flex:none;margin-top:1px;accent-color:var(--brass)}
  .submit-btn{
    width:100%;background:var(--brass);color:#1a130a;border:0;cursor:pointer;
    font-family:inherit;font-weight:900;font-size:17px;padding:15px;border-radius:12px;letter-spacing:-.01em;
    box-shadow:0 14px 30px -12px rgba(233,168,58,.9);transition:transform .12s,opacity .2s;
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
  }
  .submit-btn:hover{transform:translateY(-2px)}
  .submit-btn:disabled{opacity:.6;cursor:default;transform:none}
  .form-msg{margin-top:14px;font-size:14px;font-weight:600;text-align:center;display:none;padding:12px;border-radius:10px}
  .form-msg.ok{display:block;color:var(--solve);background:rgba(84,192,138,.1);border:1px solid rgba(84,192,138,.35)}
  .form-msg.err{display:block;color:#f0a894;background:rgba(229,83,61,.1);border:1px solid rgba(229,83,61,.35)}

  /* ---------- preloader: doorlock unlock intro ---------- */
  body.pl-active{overflow:hidden}
  #preloader{position:fixed;inset:0;z-index:9999;overflow:hidden;background:var(--ink)}
  #preloader.done{display:none}
  .door{
    position:absolute;top:0;bottom:0;width:51%;
    background-color:#161c24;
    background-image:
      repeating-linear-gradient(90deg,rgba(255,255,255,.015) 0 2px,transparent 2px 5px),
      linear-gradient(90deg,rgba(255,255,255,.04),rgba(0,0,0,.3) 60%,rgba(0,0,0,.42));
    transition:transform 1s cubic-bezier(.76,0,.24,1);
    will-change:transform;
  }
  .door::before{ /* recessed door panel */
    content:"";position:absolute;top:9%;bottom:9%;left:12%;right:12%;
    border:1px solid rgba(255,255,255,.05);border-radius:6px;
    box-shadow:inset 0 0 60px rgba(0,0,0,.4);
  }
  .door-l{left:0}
  .door-r{right:0;transform:scaleX(-1)}
  .door-r::after{ /* handle near seam (mirrored) */
    content:"";position:absolute;top:48%;left:16%;width:6px;height:44px;border-radius:4px;
    background:linear-gradient(var(--brass),var(--brass-dim));opacity:.5;
  }
  .door-l::after{content:"";position:absolute;top:48%;right:16%;width:6px;height:44px;border-radius:4px;background:linear-gradient(var(--brass),var(--brass-dim));opacity:.5}
  #preloader.open .door-l{transform:translateX(-101%)}
  #preloader.open .door-r{transform:scaleX(-1) translateX(-101%)}

  .pl-lock{
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;text-align:center;
    transition:opacity .5s ease,transform .6s ease;
  }
  #preloader.open .pl-lock{opacity:0;transform:translate(-50%,-50%) scale(1.25)}
  .pl-unit{
    background:linear-gradient(170deg,#252d39,#151a21);border:1px solid var(--line);
    border-radius:20px;padding:26px 30px 22px;width:200px;margin:0 auto;
    box-shadow:0 40px 90px -30px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.05);
  }
  .pl-icon{width:56px;height:56px;margin:0 auto 16px;position:relative}
  .pl-icon svg{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:opacity .4s,transform .4s}
  .pl-icon .lk{stroke:var(--muted);opacity:1}
  .pl-icon .uk{stroke:var(--solve);opacity:0;transform:scale(.7)}
  #preloader.unlocked .pl-icon .lk{opacity:0;transform:scale(.7)}
  #preloader.unlocked .pl-icon .uk{opacity:1;transform:scale(1)}
  .pl-dots{display:flex;justify-content:center;gap:11px;margin-bottom:14px}
  .pl-dots i{width:11px;height:11px;border-radius:50%;background:#2f3947;transition:background .2s,box-shadow .2s}
  .pl-dots i.on{background:var(--brass);box-shadow:0 0 12px rgba(233,168,58,.7)}
  #preloader.unlocked .pl-dots i{background:var(--solve);box-shadow:0 0 12px rgba(84,192,138,.6)}
  .pl-brand{font-size:11px;font-weight:800;letter-spacing:.22em;color:var(--muted)}
  .pl-status{margin-top:18px;font-size:14px;font-weight:600;color:var(--muted);letter-spacing:.01em;transition:color .3s}
  #preloader.unlocked .pl-status{color:var(--solve)}
  .pl-skip{
    position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;
    background:transparent;border:1px solid var(--line);color:var(--muted);
    font-family:inherit;font-size:12.5px;font-weight:600;padding:7px 16px;border-radius:999px;cursor:pointer;
    transition:color .2s,border-color .2s;
  }
  .pl-skip:hover{color:var(--cream);border-color:var(--muted)}
  @media(prefers-reduced-motion:reduce){#preloader{display:none}}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
  .reveal.in{opacity:1;transform:none}

  /* ---------- responsive ---------- */
  @media(max-width:900px){
    .hero-grid{grid-template-columns:1fr;gap:38px}
    .hero{padding:104px 0 40px}
    .svc-grid,.why-grid,.why-list,.steps,.price-grid,.sit-grid,.gal-grid{grid-template-columns:1fr 1fr}
    .step:nth-child(2)::after,.step:last-child::after{display:none}
    .region-wrap{grid-template-columns:1fr;gap:26px}
    .form-wrap{grid-template-columns:1fr;gap:28px}
    .mobile-call{display:block}
    .top-call{display:none}
    footer{padding-bottom:96px}
  }
  @media(max-width:560px){
    .svc-grid,.steps,.why-list,.price-grid,.sit-grid{grid-template-columns:1fr}
    .why-grid,.gal-grid{grid-template-columns:1fr 1fr}
    .step::after{display:none!important}
    .sec{padding:56px 0}
    .final{padding:38px 22px}
    .device{max-width:100%}
    .readout .num{font-size:clamp(22px,7.2vw,31px);letter-spacing:.02em}
    .mobile-call a{font-size:16px;gap:8px}
    .hero h1{font-size:clamp(38px,11vw,60px)}
    /* fill the full width: service cards become horizontal list rows */
    .svc{display:grid;grid-template-columns:auto 1fr;column-gap:16px;row-gap:5px;padding:20px}
    .svc .ico{grid-row:1 / span 2;grid-column:1;margin-bottom:0;align-self:start}
    .svc h3{grid-column:2;align-self:center;margin-bottom:0}
    .svc p{grid-column:2}
    .svc-grid+.svc-grid{margin-top:16px}
    /* process steps become horizontal list rows */
    .steps{gap:0}
    .step{display:grid;grid-template-columns:auto 1fr;column-gap:15px;row-gap:3px;padding:18px 2px}
    .step .idx{grid-row:1 / span 2;grid-column:1;margin-bottom:0;align-self:start}
    .step h4{grid-column:2;align-self:center;margin-bottom:0}
    .step p{grid-column:2}
    .step:not(:last-child){border-bottom:1px solid var(--line)}
    .stat{padding:20px 10px}
    .field.two{grid-template-columns:1fr;gap:0}
    .field.two .field{margin-bottom:15px}
    .form-card{padding:22px}
  }
  @media(max-width:360px){
    .why-grid{grid-template-columns:1fr 1fr;gap:12px}
  }
  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;scroll-behavior:auto}
    .reveal{opacity:1;transform:none}
  }