:root{
    --paper:#f4f2ec; --paper-2:#efece4;
    --ink:#15171a; --ink-soft:#3a4048; --muted:#6a7078;
    --line:#d8d3c7; --line-soft:#e4e0d6;
    --blue:#0879bd; --blue-deep:#055d92; --blue-light:#5fb6e6;
    --red:#dd1f2d; --red-deep:#b8121f;
    --green:#8cc63e; --green-deep:#5f9328; --green-light:#b6e07a;
    --card:#fff;
    --cold:var(--blue); --hot:var(--green);
    --shadow:0 24px 60px rgba(21,23,26,.09);
    --shadow-sm:0 12px 30px rgba(21,23,26,.06);
    --r-lg:22px; --r-md:14px; --max:1160px; --gut:clamp(20px,5vw,40px);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;overflow-x:hidden;}
  a{color:inherit;text-decoration:none;}
  a:hover{color:var(--green-deep);}
  img{display:block;max-width:100%;}
  .wrap{width:min(var(--max),calc(100% - (var(--gut)*2)));margin-inline:auto;}

  /* thermal thread: people-blue -> sustainability-green -> expertise-red */
  .thermal{height:3px;width:100%;border:none;margin:0;background:linear-gradient(90deg,var(--blue) 0%,var(--blue) 22%,var(--green) 50%,var(--red) 78%,var(--red) 100%);opacity:.92;}

  /* header */
  header{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--paper) 82%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft);}
  .nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
  .nav-logo{display:flex;flex-direction:column;line-height:1;}
  .nav-logo .word{font-family:Fraunces,Georgia,serif;font-style:italic;font-weight:500;font-size:23px;letter-spacing:-.01em;color:var(--ink);}
  .nav-logo .ph{font-size:8.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-top:4px;font-weight:700;}
  .nav-right{display:flex;align-items:center;gap:28px;}
  .nav-burger{display:none;width:46px;height:46px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;background:transparent;cursor:pointer;flex-direction:column;gap:5px;padding:0;}
  .nav-burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .18s ease;}
  .nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .mobile-menu{display:none;}
  .nav-links{display:flex;gap:20px;align-items:center;font-size:11.5px;letter-spacing:.11em;text-transform:uppercase;font-weight:700;color:var(--muted);}
  .nav-links a{position:relative;padding:4px 0;transition:color .2s;}
  .nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:100%;background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
  .nav-links a:hover{color:var(--ink);}
  .nav-links a:hover::after{transform:scaleX(1);}

  .btn{display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:600;padding:13px 22px;border-radius:100px;transition:transform .18s ease,box-shadow .18s ease,background .18s;cursor:pointer;border:none;font-family:inherit;}
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);color:#fff;background:#000;}
  .btn-green{background:var(--green-deep);color:#fff;}
  .btn-green:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);color:#fff;}
  .btn-ghost{border:1px solid var(--line);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--ink);color:var(--ink);}
  .nav .btn{padding:11px 20px;}

  .dot{width:9px;height:9px;border-radius:50%;display:inline-block;}
  .dot.blue{background:var(--blue);} .dot.red{background:var(--red);} .dot.green{background:var(--green);}

  /* hero */
  .hero{position:relative;overflow:hidden;padding:clamp(18px,2.6vw,40px) 0 clamp(52px,7vw,92px);}
  .hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;display:flex;align-items:center;justify-content:flex-end;}
  .hero-bg .cogs{width:min(1000px,115%);transform:translate(16%,2%);opacity:.15;}
  .hero-inner{position:relative;z-index:1;max-width:820px;}
  .eyebrow{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--green-deep);margin-bottom:22px;}
  .hero-lockup{margin-bottom:22px;margin-top:0;}
  .mark-text{font-family:Fraunces,Georgia,serif;font-style:italic;font-weight:500;font-size:clamp(30px,4.6vw,50px);line-height:1;letter-spacing:-.015em;color:var(--ink);}
  .mark-ph{font-size:9px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-top:8px;}
  h1{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:clamp(38px,5.6vw,68px);line-height:1.02;letter-spacing:-.02em;margin:0;}
  h1 em{font-style:italic;color:var(--green-deep);font-weight:500;}
  h1 .stop{color:var(--green);}
  .hero-copy{font-size:clamp(16px,1.55vw,20px);line-height:1.6;color:var(--ink-soft);max-width:54ch;margin:24px 0 30px;}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
  .tagline{display:flex;align-items:center;gap:6px;margin-top:30px;font-family:Fraunces,Georgia,serif;font-size:clamp(18px,2vw,24px);font-weight:500;color:var(--ink);}
  .tagline .stop-b{color:var(--blue);font-weight:700;} .tagline .stop-r{color:var(--red);font-weight:700;}
  .powered{margin-top:14px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:var(--muted);}
  .powered b{color:var(--green-deep);}

  /* section scaffolding */
  section{padding:clamp(56px,8vw,96px) 0;}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:clamp(28px,4vw,44px);flex-wrap:wrap;}
  .sec-k{font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:9px;margin-bottom:14px;}
  h2{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:clamp(30px,4.4vw,52px);line-height:1.02;letter-spacing:-.02em;margin:0;max-width:20ch;}
  h2 em{font-style:italic;color:var(--green-deep);}
  .sec-note{max-width:42ch;color:var(--muted);font-size:15px;line-height:1.6;margin:0;}

  /* what we do — cards */
  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px 28px;box-shadow:var(--shadow-sm);position:relative;}
  .card .rule{width:46px;height:4px;border-radius:99px;background:var(--ink);margin-bottom:22px;}
  .card:nth-child(1) .rule{background:var(--blue);}
  .card:nth-child(2) .rule{background:var(--green);}
  .card:nth-child(3) .rule{background:var(--red);}
  .card h3{font-size:12px;text-transform:uppercase;letter-spacing:.14em;margin:0 0 8px;color:var(--ink-soft);}
  .card:nth-child(1) h3{color:var(--blue-deep);}
  .card:nth-child(2) h3{color:var(--green-deep);}
  .card:nth-child(3) h3{color:var(--red-deep);}
  .card .lead{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:clamp(20px,2vw,25px);line-height:1.1;margin:0 0 18px;}
  .card ul{list-style:none;margin:0;padding:0;display:grid;gap:13px;}
  .card li{font-size:14.5px;line-height:1.4;color:var(--ink-soft);display:grid;grid-template-columns:8px 1fr;gap:12px;align-items:start;}
  .card li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);margin-top:.45em;}

  /* why (dark) */
  .why{background:var(--ink);color:#fff;position:relative;overflow:hidden;}
  .why .thermal{position:absolute;top:0;left:0;}
  .why-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:center;}
  .why .sec-k{color:rgba(255,255,255,.55);}
  .why h2{color:#fff;}
  .why-lede{font-size:clamp(17px,1.7vw,21px);line-height:1.55;color:rgba(255,255,255,.82);margin:22px 0 0;max-width:50ch;}
  .why-cards{display:grid;grid-template-columns:1fr 1fr;gap:2px;border-radius:var(--r-lg);overflow:hidden;}
  .wc{background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.08);padding:26px 24px;}
  .wc-ic{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px;border:1px solid rgba(255,255,255,.2);color:var(--green-light);}
  .wc h3{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:20px;margin:0 0 8px;color:#fff;}
  .wc p{margin:0;font-size:13.5px;line-height:1.5;color:rgba(255,255,255,.66);}

  /* how it works — flow */
  .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;}
  .step{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:26px 22px;min-height:200px;display:flex;flex-direction:column;position:relative;}
  .step .ix{font-size:13px;font-weight:800;color:var(--green-deep);margin-bottom:14px;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:1.5px solid var(--green);border-radius:50%;}
  .step .w{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:clamp(19px,2vw,25px);line-height:1.05;margin:0;}
  .step .sx{margin:10px 0 0;font-size:13.5px;line-height:1.5;color:var(--muted);}
  .step::after{content:"→";position:absolute;right:-13px;top:50%;transform:translateY(-50%);color:var(--line);font-size:18px;z-index:2;}
  .step:last-child::after{display:none;}

  /* powered by TEG spotlight */
  .teg{position:relative;overflow:hidden;background:var(--paper-2);}
  .teg-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,5vw,64px);align-items:center;}
  .teg-body p{font-size:16px;color:var(--ink-soft);line-height:1.7;margin:0 0 18px;}
  .teg-body p:last-child{margin:0;}
  .teg-body strong{color:var(--ink);font-weight:600;}
  .pquote{font-family:Fraunces,Georgia,serif;font-style:italic;font-weight:500;font-size:clamp(22px,2.6vw,30px);line-height:1.25;color:var(--ink);margin:0 0 24px;letter-spacing:-.01em;}
  .pquote .g{color:var(--green-deep);}
  .teg-card{background:var(--ink);color:#fff;border-radius:var(--r-lg);padding:38px 34px;box-shadow:var(--shadow);}
  .teg-card .badge{font-size:11px;letter-spacing:.18em;text-transform:uppercase;font-weight:800;color:var(--green-light);margin-bottom:8px;}
  .teg-card .tlogo{display:block;margin:0 0 22px;transition:opacity .18s ease;}
  .teg-card .tlogo:hover{opacity:.78;}
  .teg-card .tlogo img{width:min(230px,72%);height:auto;display:block;}
  .teg-card ul{list-style:none;margin:0;padding:20px 0 0;border-top:1px solid rgba(255,255,255,.14);display:grid;gap:14px;}
  .teg-card li{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;font-size:14.5px;color:rgba(255,255,255,.82);line-height:1.45;}
  .teg-card li .tick{color:var(--green-light);font-weight:800;}
  .teg-card li .stat{color:var(--green-light);font-family:Fraunces,Georgia,serif;font-weight:500;font-size:26px;line-height:1;}
  .teg-card li{align-items:center;}
  .teg-link{display:inline-block;margin-top:22px;font-weight:700;font-size:14px;letter-spacing:.02em;color:var(--green-deep);border-bottom:2px solid var(--green);padding-bottom:2px;transition:color .18s,border-color .18s;}
  .teg-link:hover{color:var(--ink);border-color:var(--ink);}
  .hero-close{font-size:clamp(15px,1.45vw,18px);font-weight:600;color:var(--ink);line-height:1.5;margin:14px 0 30px;max-width:50ch;}
  .hero-aud{font-size:15px;color:var(--muted);line-height:1.5;margin:14px 0 0;max-width:50ch;}
  .svc-panel{margin-top:22px;background:var(--ink);color:#fff;border-radius:var(--r-lg);padding:32px 34px;display:grid;grid-template-columns:.5fr 1fr;gap:28px;align-items:start;}
  .svc-panel-key{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:clamp(20px,2.2vw,26px);line-height:1.12;color:#fff;}
  .svc-panel-body p{margin:0 0 14px;color:rgba(255,255,255,.8);font-size:15px;line-height:1.6;}
  .svc-panel-body p:last-child{margin:0;}
  @media(max-width:760px){.svc-panel{grid-template-columns:1fr;gap:14px;}}
  .people{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin:28px 0 30px;padding:22px 26px 22px 22px;background:color-mix(in srgb,var(--paper) 70%,#fff);border:1px solid var(--line-soft);border-radius:var(--r-lg);max-width:660px;}
  .people-row{display:flex;gap:18px;flex:0 0 auto;}
  .person{margin:0;display:flex;flex-direction:column;align-items:center;gap:8px;width:96px;}
  .person img{width:88px;height:88px;border-radius:50%;object-fit:cover;object-position:center top;display:block;background:#fff;border:2px solid var(--green-light);}
  .person figcaption{font-size:12px;font-weight:700;letter-spacing:.03em;color:var(--ink);text-align:center;line-height:1.25;}
  .people-line{flex:1 1 240px;margin:0;font-size:15.5px;line-height:1.55;color:var(--ink-soft);}
  @media(max-width:520px){
    .people{gap:18px;padding:18px;}
    .people-line{flex:1 1 100%;font-size:15px;}
  }
  .value-band{background:linear-gradient(180deg,rgba(140,198,62,.11),rgba(140,198,62,.04));border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:clamp(44px,6vw,72px) 0;}
  .value-inner{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,56px);align-items:center;}
  .value-copy h2{max-width:15ch;margin-top:2px;}
  .value-body p{font-size:16px;line-height:1.7;color:var(--ink-soft);margin:0 0 16px;}
  .value-body p:last-of-type{margin-bottom:20px;}
  @media(max-width:820px){.value-inner{grid-template-columns:1fr;gap:18px;}}

  /* footer */
  footer{margin-top:clamp(20px,4vw,40px);}
  footer .thermal{opacity:.75;}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1.05fr;align-items:stretch;gap:0;padding:clamp(40px,5vw,64px) 0 clamp(28px,3vw,40px);}
  .foot-col{padding:6px clamp(22px,3vw,44px);}
  .foot-col:not(:first-child){border-left:1px solid var(--line);}
  .foot-cta h2{font-size:clamp(26px,3vw,40px);margin:0 0 14px;}
  .foot-cta p{color:var(--muted);line-height:1.6;font-size:14.5px;margin:0 0 20px;max-width:32ch;}
  .foot-contact{display:flex;flex-direction:column;gap:16px;justify-content:center;}
  .cline{display:flex;align-items:center;gap:13px;color:var(--ink);font-size:15px;font-weight:500;transition:color .18s;}
  a.cline:hover{color:var(--green-deep);}
  .ci{width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:13px;color:var(--muted);}
  .foot-sign{display:flex;flex-direction:column;align-items:flex-end;justify-content:space-between;text-align:right;padding-top:6px;padding-bottom:6px;}
  .foot-word{font-family:Fraunces,Georgia,serif;font-style:italic;font-weight:500;font-size:24px;color:var(--ink);margin-bottom:6px;}
  .foot-powered{font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:var(--muted);margin-bottom:14px;}
  .foot-powered b{color:var(--green-deep);}
  .foot-copy{font-size:12px;color:var(--muted);line-height:1.6;margin:22px 0 0;}
  .contact-block{display:flex;flex-direction:column;gap:11px;margin:22px 0 26px;}
  .contact-name{font-weight:700;color:var(--ink);font-size:16px;}
  .contact-name span{color:var(--muted);font-weight:600;}
  .foot-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0 30px;border-top:1px solid var(--line-soft);font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--muted);}
  .foot-links{display:flex;gap:26px;}
  .foot-bar a:hover{color:var(--ink);}

  /* ===== living engineering schematic ===== */
  .hero-bg .rig{width:min(1080px,122%);transform:translate(13%,3%);opacity:.17;filter:grayscale(.12);}
  .rig{width:100%;height:auto;overflow:visible;display:block;}
  .rig .wall{fill:none;stroke:var(--line);stroke-width:1.4;}
  .rig .wall-2{fill:none;stroke:var(--line);stroke-width:1;opacity:.7;}
  .rig .part{fill:#fff;stroke:var(--ink);stroke-width:1.6;}
  .rig .part-soft{fill:#fff;stroke:var(--ink-soft);stroke-width:1.3;}
  .rig .hatch{stroke:var(--ink-soft);stroke-width:.8;opacity:.45;}
  .rig .tick{stroke:var(--muted);stroke-width:1;opacity:.45;}
  .rig .loop{fill:none;stroke-width:2.2;stroke-linecap:round;}
  .rig .loop.cold{stroke:var(--cold);opacity:.28;}
  .rig .loop.hot{stroke:var(--hot);opacity:.3;}
  .rig .flow{fill:none;stroke-width:2.6;stroke-linecap:round;stroke-dasharray:9 120;}
  .rig .flow.cold{stroke:var(--cold);animation:march 3.2s linear infinite;}
  .rig .flow.hot{stroke:var(--hot);animation:marchRev 3.6s linear infinite;}
  @keyframes march{to{stroke-dashoffset:-258;}}
  @keyframes marchRev{to{stroke-dashoffset:258;}}
  .rig .fan{transform-box:fill-box;transform-origin:center;animation:spin 2.4s linear infinite;}
  .rig .fan.slow{animation-duration:5s;}
  .rig .impeller{transform-box:fill-box;transform-origin:center;animation:spin 1.5s linear infinite;}
  .rig .piston{animation:bob 1.05s ease-in-out infinite;}
  @keyframes bob{0%,100%{transform:translateY(0);}50%{transform:translateY(5px);}}
  .rig .needle{transform-box:fill-box;transform-origin:bottom center;animation:sweep 3s ease-in-out infinite;}
  @keyframes sweep{0%,100%{transform:rotate(-30deg);}50%{transform:rotate(32deg);}}
  .rig .gcold{animation:breathe 4s ease-in-out infinite;}
  .rig .ghot{animation:breathe 4s ease-in-out infinite .8s;}
  @keyframes breathe{0%,100%{opacity:.4;}50%{opacity:.9;}}
  .rig .dc{fill:var(--cold);} .rig .dh{fill:var(--hot);}

  /* cog animation */
  .cogs .gear{transform-box:fill-box;transform-origin:center;}
  .cogs .gear path{fill:none;stroke:var(--ink);stroke-width:2;}
  .cogs .hub{fill:none;stroke:var(--ink);stroke-width:2;}
  .cogs .spoke{stroke:var(--ink);stroke-width:2;stroke-linecap:round;}
  .cogs .pin{fill:var(--ink);}
  .gearA{animation:spin 22s linear infinite;}
  .gearB{animation:spinrev 14.7s linear infinite;}
  .gearC{animation:spinrev 29.3s linear infinite;}
  @keyframes spin{to{transform:rotate(360deg);}}
  @keyframes spinrev{to{transform:rotate(-360deg);}}

  /* reveal */
  .js .reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease;}
  .nav-logo img{height:40px;width:auto;display:block;}
  .hero-mark{width:min(540px,92%);height:auto;display:block;margin:0 0 6px -6px;}
  .foot-mark{width:100%;max-width:400px;height:auto;display:block;margin:0 0 auto;flex:0 0 auto;}
  .reveal.in{opacity:1;transform:none;}

  @media(max-width:920px){
    .why-grid,.teg-grid,.foot-grid{grid-template-columns:1fr;}
    .cards{grid-template-columns:1fr;}
    .flow{grid-template-columns:1fr 1fr;}
    .step:nth-child(2)::after{display:none;}
    .nav-links{display:none;}
    .nav-burger{display:flex;}
    .nav .btn{display:none;}
    .nav{height:66px;}
    .mobile-menu{display:block;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 18px 40px rgba(0,0,0,.10);opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s ease,transform .2s ease,visibility .2s;}
    .mobile-menu.open{opacity:1;visibility:visible;transform:none;}
    .mobile-menu a{display:block;padding:17px 0;font-size:14px;letter-spacing:.09em;text-transform:uppercase;font-weight:700;color:var(--ink);border-bottom:1px solid var(--line-soft);}
    .mobile-menu .btn{display:inline-flex;margin:18px 0 22px;text-transform:none;letter-spacing:0;border-bottom:0;}
    .foot-col:not(:first-child){border-left:none;border-top:1px solid var(--line);}
    .foot-sign{align-items:flex-start;text-align:left;justify-content:flex-start;}
    .foot-mark{max-width:300px;}
    .hero-bg .cogs{transform:translate(24%,8%);opacity:.1;}
  }
  @media(max-width:520px){
    .flow{grid-template-columns:1fr;}
    .step::after{content:"↓";right:auto;left:50%;top:auto;bottom:-13px;transform:translateX(-50%);}
    .why-cards{grid-template-columns:1fr;}
  }
  @media(prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none;}
    .cogs .gear{animation:none;}
    .rig .flow,.rig .fan,.rig .impeller,.rig .piston,.rig .needle,.rig .gcold,.rig .ghot{animation:none;}
    html{scroll-behavior:auto;}
  }