:root{
    --ink:#0B2A44;
    --ink-soft:#4C5C6E;
    --bg:#EEF2F6;
    --panel:#FFFFFF;
    --line:#DCE3EA;
    --accent:#20BBFD;
    --accent-dark:#12A6E0;
    --accent-ink:#0B6FA5;
    --urgent:#E8491D;
    --white:#FFFFFF;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:700;
    letter-spacing:0.01em;
    margin:0;
    color:var(--ink);
  }
  a{color:inherit;text-decoration:none;}
  .mono{font-family:'IBM Plex Mono', monospace;}
  .wrap{max-width:1120px;margin:0 auto;padding:0 28px;}
  img,svg{max-width:100%;display:block;}

  /* Skip link / focus */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
    outline:3px solid var(--accent-ink);
    outline-offset:2px;
  }

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(242,241,237,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:16px 0;
  }
  .brand{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    font-size:26px;
    letter-spacing:0.02em;
    display:flex; align-items:center; gap:9px;
  }
  .brand-mark{width:24px; height:24px; flex-shrink:0;}
  .brand span{color:var(--accent-ink);}
  .nav-links{display:flex; gap:32px; align-items:center;}
  .nav-links a{font-size:15px; font-weight:500; color:var(--ink-soft); transition:color .15s;}
  .nav-links a:hover{color:var(--ink);}
  .nav-links a.call-btn, .nav-links a.call-btn:hover{color:var(--white);}
  .nav-links a.nav-phone, .nav-links a.nav-phone:hover{color:var(--urgent); font-weight:700;}
  .call-btn{
    font-family:'IBM Plex Mono', monospace;
    background:var(--ink); color:var(--white);
    padding:10px 18px; font-size:14px; font-weight:600;
    border-radius:2px;
    border-left:4px solid var(--accent);
  }
  .call-btn:hover{background:#0F151C;}
  .btn-phone{color:var(--urgent) !important; border-color:var(--urgent) !important; font-weight:700;}
  .btn-phone:hover{background:var(--urgent) !important; color:var(--white) !important;}
  .menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;}
  .menu-toggle svg{width:24px;height:24px;}

  @media (max-width:820px){
    .nav-links{
      position:absolute; top:100%; left:0; right:0;
      flex-direction:column; align-items:flex-start; gap:0;
      background:var(--panel); border-bottom:1px solid var(--line);
      max-height:0; overflow:hidden; transition:max-height .25s ease;
    }
    .nav-links.open{max-height:400px;}
    .nav-links a{width:100%; padding:14px 28px; border-top:1px solid var(--line);}
    .nav-links .call-btn{margin:14px 28px; width:calc(100% - 56px); text-align:center;}
    .menu-toggle{display:block;}
  }

  /* ---------- Hero ---------- */
  .hero{padding:64px 0 72px;}
  .hero-grid{
    display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center;
  }
  @media (max-width:820px){
    .hero-grid{grid-template-columns:1fr; gap:36px;}
  }
  .tag-line{
    display:inline-flex; align-items:center; gap:8px;
    font-family:'IBM Plex Mono', monospace; font-size:13px; font-weight:600;
    color:var(--accent-ink); background:rgba(11,111,165,0.09);
    padding:6px 12px; border:1px solid rgba(11,111,165,0.25);
    margin-bottom:22px;
  }
  .tag-line::before{content:"●"; color:var(--accent-ink); font-size:8px;}
  .hero h1{
    font-size:clamp(40px, 6vw, 68px);
    line-height:0.98;
  }
  .hero h1 em{font-style:normal; color:var(--accent-ink);}
  .hero p.lede{
    font-size:19px; color:var(--ink-soft); max-width:46ch; margin:22px 0 32px;
  }
  .hero-ctas{display:flex; gap:16px; flex-wrap:wrap; margin-bottom:36px;}
  .btn{
    display:inline-flex; align-items:center; gap:10px;
    padding:15px 26px; font-size:15px; font-weight:600;
    border-radius:2px; border:1px solid transparent; cursor:pointer;
    transition:transform .12s ease, background .15s ease;
  }
  .btn:hover{transform:translateY(-1px);}
  .btn-primary{background:var(--accent); color:var(--ink);}
  .btn-primary:hover{background:var(--accent-dark);}
  .btn-secondary{background:transparent; color:var(--ink); border-color:var(--ink);}
  .btn-secondary:hover{background:var(--ink); color:var(--white);}
  .hero-meta{
    display:flex; gap:28px; flex-wrap:wrap;
    font-family:'IBM Plex Mono', monospace; font-size:13px; color:var(--ink-soft);
  }
  .hero-meta strong{color:var(--ink); display:block; font-size:20px; font-family:'Big Shoulders Display'; font-weight:700;}

  .diagram-card{
    background:var(--panel); border:1px solid var(--line); padding:18px;
    position:relative;
  }
  .fig-caption{
    position:absolute; top:-11px; left:16px; right:16px; background:var(--bg);
    padding:0 8px; font-family:'IBM Plex Mono', monospace; font-size:10px;
    letter-spacing:0.03em; color:var(--ink-soft); white-space:nowrap;
    overflow:hidden; text-overflow:ellipsis;
  }
  .slider-viewport{position:relative; width:100%; aspect-ratio:470/380;}
  .slider-viewport svg{
    position:absolute; inset:0; width:100%; height:100%;
    opacity:0; transition:opacity .4s ease; pointer-events:none;
  }
  .slider-viewport svg.is-active{opacity:1; pointer-events:auto;}
  .slider-controls{
    display:flex; align-items:center; justify-content:space-between; gap:12px;
    margin-top:14px;
  }
  .slider-dots{display:flex; gap:8px;}
  .slider-dot{
    width:8px; height:8px; border-radius:50%; border:1px solid var(--ink-soft);
    background:transparent; padding:0; cursor:pointer;
  }
  .slider-dot.is-active{background:var(--accent); border-color:var(--accent);}
  .slider-arrows{display:flex; gap:8px; align-items:center;}
  .slider-arrow{
    width:28px; height:28px; border:1px solid var(--line); background:var(--panel);
    display:flex; align-items:center; justify-content:center; cursor:pointer; color:var(--ink);
  }
  .slider-arrow:hover{background:var(--bg);}
  .slider-arrow svg{width:14px; height:14px;}
  .slider-counter{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--ink-soft);}

  /* Shared appliance-diagram styling (applies inside all hero slides) */
  .lbl-line{stroke:#B6C0C9; stroke-width:1;}
  .lbl-dot{fill:var(--accent);}
  .lbl-text{font-family:'IBM Plex Mono',monospace; font-size:10.5px; fill:var(--ink-soft);}
  .part{fill:none; stroke:var(--ink); stroke-width:1.6; stroke-linejoin:round; stroke-linecap:round;}
  .part-fill{fill:var(--bg); stroke:var(--ink); stroke-width:1.6;}

  /* ---------- Section shared ---------- */
  section{padding:76px 0;}
  .section-head{margin-bottom:44px; max-width:640px;}
  .eyebrow{
    font-family:'IBM Plex Mono', monospace; font-size:13px; color:var(--accent-ink);
    margin-bottom:10px; font-weight:600;
  }
  .section-head h2{font-size:clamp(30px,4vw,42px); line-height:1.05;}
  .section-head p{color:var(--ink-soft); font-size:17px; margin-top:14px;}

  /* ---------- Services teaser (homepage) ---------- */
  .services-teaser{background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .teaser-grid{display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-bottom:32px;}
  .teaser-card{border:1px solid var(--line); padding:24px;}
  .teaser-card h3{font-size:20px; margin-bottom:8px;}
  .teaser-card p{color:var(--ink-soft); font-size:14px; margin:0 0 14px;}
  .teaser-card .cat-note{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--accent-ink);}
  @media (max-width:640px){.teaser-grid{grid-template-columns:1fr;}}

  /* ---------- Services page hero ---------- */
  .svc-hero{padding:56px 0 0;}
  .svc-hero .section-head{margin-bottom:32px;}

  /* ---------- Services / booking ---------- */
  .services{background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .duty-panel{border:1px solid var(--line); margin-bottom:28px;}
  .duty-panel:last-child{margin-bottom:0;}
  .duty-head{
    display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
    padding:16px 24px; background:var(--bg); border-bottom:1px solid var(--line);
  }
  .duty-head h3{font-size:20px;}
  .duty-head .cat-note{
    font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--accent-ink); letter-spacing:0.02em;
  }
  .duty-row{
    display:flex; align-items:center; justify-content:space-between; gap:20px;
    padding:20px 24px; border-top:1px solid var(--line); flex-wrap:wrap;
  }
  .duty-row:first-of-type{border-top:none;}
  .duty-info{flex:1; min-width:220px;}
  .duty-name{font-size:17px; font-weight:600; margin-bottom:4px;}
  .duty-desc{font-size:14px; color:var(--ink-soft); margin:0;}
  .duty-meta{
    display:flex; align-items:center; gap:18px; white-space:nowrap;
  }
  .duty-price{font-family:'IBM Plex Mono',monospace; font-size:13px; color:var(--ink-soft);}
  .duty-price strong{color:var(--ink); font-size:16px; font-weight:600; font-family:'IBM Plex Sans';}
  .btn-book{
    font-family:'IBM Plex Mono',monospace; font-size:13px; font-weight:600;
    background:var(--ink); color:var(--white); padding:10px 18px; border-radius:2px;
    white-space:nowrap;
  }
  .btn-book:hover{background:var(--accent-ink);}
  @media (max-width:640px){
    .duty-row{flex-direction:column; align-items:flex-start;}
    .duty-meta{width:100%; justify-content:space-between;}
  }

  /* ---------- Reviews CTA ---------- */
  .reviews-cta{background:var(--ink); color:var(--white);}
  .reviews-cta .wrap{
    display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap;
  }
  .reviews-cta h2{color:var(--white); font-size:clamp(26px,3.2vw,34px); max-width:22ch;}
  .reviews-cta p{color:#B9C0C7; margin-top:10px; max-width:42ch;}
  .reviews-cta .btn-primary{flex-shrink:0;}

  /* ---------- Connect / social panel ---------- */
  .connect-panel{
    border:1px solid var(--line); background:var(--panel);
    display:grid; grid-template-columns:repeat(4,1fr);
  }
  .connect-item{
    display:flex; flex-direction:column; align-items:center; gap:10px;
    padding:26px 12px; border-right:1px solid var(--line);
    font-family:'IBM Plex Mono',monospace; font-size:12px; letter-spacing:0.03em; color:var(--ink-soft);
    transition:background .15s ease, color .15s ease;
  }
  .connect-item:last-child{border-right:none;}
  .connect-item:hover{background:var(--bg); color:var(--ink);}
  .connect-item svg{width:26px; height:26px; stroke:currentColor;}
  @media (max-width:640px){
    .connect-panel{grid-template-columns:repeat(2,1fr);}
    .connect-item:nth-child(2){border-right:none;}
    .connect-item{border-bottom:1px solid var(--line);}
  }

  /* ---------- Process ---------- */
  .process-list{display:grid; grid-template-columns:repeat(3,1fr); gap:32px;}
  .process-step{border-top:3px solid var(--ink); padding-top:18px;}
  .process-step .num{font-family:'IBM Plex Mono',monospace; color:var(--accent-ink); font-weight:600; font-size:13px;}
  .process-step h3{font-size:24px; margin:8px 0 10px;}
  .process-step p{color:var(--ink-soft); font-size:15px; margin:0;}
  @media (max-width:820px){.process-list{grid-template-columns:1fr;}}

  /* ---------- About ---------- */
  .about-grid{display:grid; grid-template-columns:1.3fr 0.7fr; gap:56px; align-items:start;}
  .about-grid p{font-size:17px; color:var(--ink-soft); margin:0 0 18px;}
  .badge{
    border:1px solid var(--line); background:var(--panel);
    padding:26px; text-align:center;
  }
  .badge .num{font-family:'Big Shoulders Display'; font-weight:800; font-size:44px; color:var(--accent-ink); line-height:1;}
  .badge .lbl{font-family:'IBM Plex Mono'; font-size:12px; color:var(--ink-soft); margin-top:8px; letter-spacing:0.03em;}
  .badge + .badge{margin-top:16px;}

  /* ---------- Testimonial ---------- */
  .testimonial{background:var(--ink); color:var(--white);}
  .testimonial .wrap{max-width:760px;}
  .testimonial blockquote{
    margin:0; font-family:'Big Shoulders Display'; font-weight:600;
    font-size:clamp(24px,3.4vw,34px); line-height:1.25;
  }
  .testimonial blockquote::before{content:"“"; color:var(--accent);}
  .testimonial blockquote::after{content:"”"; color:var(--accent);}
  .testimonial cite{
    display:block; margin-top:24px; font-style:normal;
    font-family:'IBM Plex Mono'; font-size:13px; color:#B9C0C7;
  }

  /* ---------- Contact ---------- */
  .contact-grid{display:grid; grid-template-columns:0.85fr 1.15fr; gap:56px;}
  .contact-info dl{margin:0;}
  .contact-info dt{
    font-family:'IBM Plex Mono'; font-size:12px; color:var(--accent-ink); margin-top:26px; letter-spacing:0.03em;
  }
  .contact-info dt:first-child{margin-top:0;}
  .contact-info dd{margin:6px 0 0; font-size:19px; font-weight:500;}
  .contact-info a{border-bottom:1px solid transparent;}
  .contact-info a:hover{border-color:var(--ink);}

  form{border:1px solid var(--line); background:var(--panel); padding:32px;}
  .form-row{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px;}
  .field{display:flex; flex-direction:column; gap:6px;}
  .field.full{grid-column:1/-1;}
  label{font-size:13px; font-weight:600; color:var(--ink-soft);}
  input, select, textarea{
    font-family:'IBM Plex Sans'; font-size:15px; padding:11px 12px;
    border:1px solid var(--line); background:var(--white); color:var(--ink);
    border-radius:2px;
  }
  textarea{resize:vertical; min-height:100px;}
  .form-foot{display:flex; align-items:center; justify-content:space-between; gap:16px; margin-top:6px; flex-wrap:wrap;}
  .form-note{font-size:13px; color:var(--ink-soft);}
  #form-status{font-size:14px; margin-top:14px;}
  @media (max-width:640px){.form-row{grid-template-columns:1fr;} .contact-grid{grid-template-columns:1fr;}}

  /* ---------- Legal / prose page ---------- */
  .legal{max-width:760px;}
  .legal h1{font-size:clamp(30px,4vw,42px); margin-bottom:6px;}
  .legal .updated{font-family:'IBM Plex Mono',monospace; font-size:13px; color:var(--ink-soft); margin-bottom:36px; display:block;}
  .legal h2{font-size:20px; margin-top:36px; margin-bottom:10px;}
  .legal p{color:var(--ink-soft); font-size:15px; margin:0 0 14px;}
  .legal ol{color:var(--ink-soft); font-size:15px; padding-left:20px;}
  .legal li{margin-bottom:8px;}
  .legal a{color:var(--accent-ink); border-bottom:1px solid rgba(11,111,165,0.3);}

  /* ---------- Footer ---------- */
  footer{border-top:1px solid var(--line); padding:36px 0;}
  .footer-row{
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;
    font-size:13px; color:var(--ink-soft);
  }
  .footer-row a{color:var(--ink-soft);}
  .footer-row a:hover{color:var(--ink);}
  .footer-links{display:flex; gap:22px; flex-wrap:wrap;}