:root{
    --navy-950:#0b1526;
    --navy-900:#0f1c33;
    --navy-800:#16233f;
    --navy-700:#1e2e50;
    --navy-600:#2c3e63;
    --navy-500:#425583;
    --paper:#f4f6fa;
    --paper-dim:#e7ebf3;
    --panel:#ffffff;
    --ink:#101a2e;
    --slate:#5b6780;
    --slate-soft:#8892a6;
    --line:#d7dce7;
    --accent:#2fa8bd;
    --accent-deep:#1f7d8f;
    --accent-tint:#e2f2f4;
    --violet:#8b7fd6;
    --good:#3f8f5f;
    --bad:#c0392b;
  }
  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){
      --paper:#0b1526;
      --paper-dim:#0f1c33;
      --panel:#121f38;
      --ink:#eef1f8;
      --slate:#a9b3c9;
      --slate-soft:#7986a3;
      --line:#26385c;
      --accent:#4fd6e8;
      --accent-deep:#7fe5f2;
      --accent-tint:#122a30;
      --violet:#a79bec;
    }
  }
  :root[data-theme="dark"]{
    --paper:#0b1526;
    --paper-dim:#0f1c33;
    --panel:#121f38;
    --ink:#eef1f8;
    --slate:#a9b3c9;
    --slate-soft:#7986a3;
    --line:#26385c;
    --accent:#4fd6e8;
    --accent-deep:#7fe5f2;
    --accent-tint:#122a30;
    --violet:#a79bec;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
    font-size:15px;
    line-height:1.6;
  }
  h1,h2,h3,h4{
    font-family:"Fraunces", ui-serif, Georgia, serif;
    font-weight:600;
    text-wrap:balance;
    margin:0;
    color:var(--ink);
  }
  p{margin:0;}
  a{color:inherit;}
  button{font-family:inherit;}
  .mono{font-family:"IBM Plex Mono", ui-monospace, monospace;}
  .eyebrow{
    font-family:"IBM Plex Mono", ui-monospace, monospace;
    font-size:11.5px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--accent);
  }
  img{max-width:100%;}
  [hidden]{display:none!important;}
  :focus-visible{outline:2px solid var(--violet); outline-offset:2px;}

  .wrap{max-width:1120px; margin:0 auto; padding:0 32px;}
  @media (max-width:720px){ .wrap{padding:0 20px;} }

  /* ---------- header ---------- */
  header.site{
    position:sticky; top:0; z-index:40;
    background:color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .site-bar{
    display:flex; align-items:center; justify-content:space-between;
    padding:16px 32px; max-width:1120px; margin:0 auto;
  }
  @media (max-width:720px){ .site-bar{padding:14px 20px;} }
  .brand{display:flex; align-items:center; gap:10px; text-decoration:none;}
  .brand .mark, .foot-brand .mark{height:32px; width:auto; flex:none; object-fit:contain;}
  .brand .word{font-family:"Fraunces", serif; font-weight:600; font-size:19px; letter-spacing:.01em;}
  nav.tabs{display:flex; gap:2px; align-items:center;}
  nav.tabs button{
    background:none; border:none; cursor:pointer;
    font-size:13.5px; color:var(--slate); padding:9px 14px;
    border-radius:2px; position:relative; font-weight:500;
  }
  nav.tabs button:hover{color:var(--ink);}
  nav.tabs button[aria-current="page"]{color:var(--ink);}
  nav.tabs button[aria-current="page"]::after{
    content:""; position:absolute; left:14px; right:14px; bottom:2px; height:2px; background:var(--accent);
  }
  .nav-cta{
    background:var(--navy-800); color:#f4f6fa; border:none; cursor:pointer;
    font-size:13px; font-weight:600; padding:10px 18px; border-radius:2px;
    letter-spacing:.01em;
  }
  :root[data-theme="dark"] .nav-cta, @media (prefers-color-scheme: dark){ .nav-cta{} }
  .nav-cta:hover{background:var(--accent-deep); color:var(--navy-950);}
  .menu-btn{display:none; background:none; border:1px solid var(--line); border-radius:2px; padding:8px 10px; cursor:pointer;}
  @media (max-width:860px){
    nav.tabs{display:none;}
    .menu-btn{display:inline-flex;}
  }
  .mobile-nav{display:none; flex-direction:column; border-top:1px solid var(--line); padding:8px 20px 16px;}
  .mobile-nav.open{display:flex;}
  .mobile-nav button{
    text-align:left; background:none; border:none; padding:12px 0; font-size:15px;
    color:var(--slate); border-bottom:1px solid var(--line); cursor:pointer;
  }
  .mobile-nav button[aria-current="page"]{color:var(--accent); font-weight:600;}

  /* ---------- generic section scaffolding ---------- */
  section{padding:76px 0;}
  section.tight{padding:56px 0;}
  .section-head{max-width:640px; margin-bottom:44px;}
  .section-head h2{font-size:clamp(26px,3.4vw,36px); margin-top:10px;}
  .section-head p{color:var(--slate); margin-top:14px; font-size:15.5px;}

  .btn{
    display:inline-flex; align-items:center; gap:8px;
    padding:12px 22px; border-radius:2px; font-size:14px; font-weight:600;
    cursor:pointer; border:1px solid transparent; text-decoration:none;
    letter-spacing:.01em;
  }
  .btn-primary{background:var(--accent); color:#0b1526;}
  .btn-primary:hover{background:var(--accent-deep);}
  .btn-ghost{background:transparent; border-color:var(--line); color:var(--ink);}
  .btn-ghost:hover{border-color:var(--slate-soft);}
  .btn-dark{background:var(--navy-800); color:#f4f6fa;}
  .btn-dark:hover{background:var(--navy-700);}
  .btn[disabled]{opacity:.55; cursor:not-allowed;}

  /* ---------- home hero ---------- */
  .hero{
    position:relative; overflow:hidden;
    background:var(--navy-900);
    color:#eef1f8;
    padding:96px 0 84px;
  }
  .hero .wrap{position:relative; z-index:2; display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;}
  @media (max-width:900px){ .hero .wrap{grid-template-columns:1fr;} .hero{padding:64px 0 52px;} }
  .hero h1{font-size:clamp(34px,5vw,54px); color:#fff; line-height:1.05;}
  .hero .tagline{
    font-family:"Fraunces"; font-style:italic; font-weight:500;
    font-size:clamp(19px,2.2vw,23px); color:var(--accent); margin-top:16px;
  }
  .hero .lede{color:#c3cbe0; font-size:16px; margin-top:14px; max-width:44ch;}
  .hero .cta-row{display:flex; gap:14px; margin-top:32px; flex-wrap:wrap;}
  .hero-stats{display:flex; gap:32px; margin-top:48px;}
  .hero-stats div .n{font-family:"IBM Plex Mono"; font-size:24px; color:var(--accent); font-weight:500;}
  .hero-stats div .l{font-size:12px; color:#8d9ac2; margin-top:2px;}
  #eco-canvas{width:100%; height:380px; display:block;}
  @media (max-width:900px){ #eco-canvas{height:260px;} }

  /* pillars */
  .pillars{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
  @media (max-width:800px){ .pillars{grid-template-columns:1fr;} }
  .pillar{background:var(--panel); padding:32px 28px;}
  .pillar .idx{font-family:"IBM Plex Mono"; font-size:12px; color:var(--accent); letter-spacing:.1em;}
  .pillar h3{font-size:20px; margin-top:14px;}
  .pillar p{color:var(--slate); margin-top:12px; font-size:14.5px;}

  /* comparative */
  .compare{display:grid; grid-template-columns:1fr 1fr; border:1px solid var(--line);}
  @media (max-width:720px){ .compare{grid-template-columns:1fr;} }
  .compare .col{padding:34px 30px;}
  .compare .col.trad{background:var(--paper-dim); color:var(--slate);}
  .compare .col.kemav{background:var(--navy-900); color:#eef1f8;}
  .compare h4{font-size:13px; text-transform:uppercase; letter-spacing:.08em; font-family:"IBM Plex Mono"; font-weight:500; margin-bottom:22px;}
  .compare .col.trad h4{color:var(--slate-soft);}
  .compare .col.kemav h4{color:var(--accent);}
  .crow{padding:14px 0; border-top:1px solid; font-size:14.5px;}
  .compare .col.trad .crow{border-color:var(--line);}
  .compare .col.kemav .crow{border-color:#2c3e63;}
  .crow b{display:block; font-size:12px; text-transform:uppercase; letter-spacing:.06em; opacity:.7; margin-bottom:4px; font-weight:500;}

  /* testimonial */
  .testi{background:var(--accent-tint); border:1px solid var(--line); padding:40px 44px;}
  .testi p{font-family:"Fraunces"; font-size:22px; font-weight:500; line-height:1.4; color:var(--ink);}
  .testi .who{margin-top:18px; font-size:13px; color:var(--slate); font-family:"IBM Plex Mono";}

  /* ---------- store / pricing ---------- */
  .plans{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
  @media (max-width:880px){ .plans{grid-template-columns:1fr; max-width:440px; margin:0 auto;} }
  .plan{
    border:1px solid var(--line); background:var(--panel);
    display:flex; flex-direction:column; position:relative;
  }
  .plan.featured{border-color:var(--accent); box-shadow:0 0 0 1px var(--accent);}
  .plan .badge{
    position:absolute; top:-1px; right:-1px; background:var(--accent); color:#0b1526;
    font-family:"IBM Plex Mono"; font-size:10.5px; letter-spacing:.08em; text-transform:uppercase;
    padding:6px 10px;
  }
  .plan-head{padding:28px 26px 22px; border-bottom:1px solid var(--line);}
  .plan-head .eyebrow{display:block; margin-bottom:8px;}
  .plan-head h3{font-size:22px;}
  .plan-head .tag{color:var(--slate); font-size:13.5px; margin-top:6px;}
  .plan-body{padding:24px 26px; flex:1; display:flex; flex-direction:column; gap:18px;}
  .price-block .amt{font-family:"IBM Plex Mono"; font-size:30px; font-weight:500; color:var(--ink); font-variant-numeric:tabular-nums;}
  .price-block .per{color:var(--slate-soft); font-size:12.5px;}
  .term-select{display:flex; flex-direction:column; gap:6px;}
  .term-select .lbl{font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--slate-soft); font-family:"IBM Plex Mono";}
  select.term{
    border:1px solid var(--line); background:var(--paper); color:var(--ink);
    padding:9px 10px; font-size:13.5px; border-radius:2px; font-family:"IBM Plex Sans";
  }
  .feat-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px;}
  .feat-list li{font-size:13.5px; color:var(--slate); padding-left:18px; position:relative;}
  .feat-list li::before{content:"—"; position:absolute; left:0; color:var(--accent);}
  .plan-foot{padding:22px 26px 28px;}
  .plan-foot .postnote{font-size:12px; color:var(--slate-soft); margin-top:10px;}
  .plan .btn{width:100%; justify-content:center;}

  .store-note{
    margin-top:40px; border:1px dashed var(--line); padding:18px 22px;
    font-size:13px; color:var(--slate); display:flex; gap:12px; align-items:flex-start;
  }

  /* ---------- services ---------- */
  .svc-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
  @media (max-width:820px){ .svc-grid{grid-template-columns:1fr;} }
  .svc-card{border:1px solid var(--line); padding:26px; background:var(--panel);}
  .svc-card .n{font-family:"IBM Plex Mono"; color:var(--slate-soft); font-size:12px;}
  .svc-card h3{font-size:18px; margin-top:10px;}
  .svc-card p{color:var(--slate); font-size:13.5px; margin-top:10px;}

  .faq{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%; text-align:left; background:none; border:none; cursor:pointer;
    padding:20px 4px; display:flex; justify-content:space-between; align-items:center;
    font-size:15px; font-weight:500; color:var(--ink);
  }
  .faq-q .plus{font-family:"IBM Plex Mono"; color:var(--accent); font-size:18px; transition:transform .15s;}
  .faq-item[data-open="true"] .plus{transform:rotate(45deg);}
  .faq-a{max-height:0; overflow:hidden; transition:max-height .2s ease;}
  .faq-item[data-open="true"] .faq-a{max-height:200px;}
  .faq-a p{padding:0 4px 20px; color:var(--slate); font-size:14px; max-width:62ch;}

  /* ---------- about ---------- */
  .about-hero{display:grid; grid-template-columns:1.1fr .9fr; gap:56px; align-items:start;}
  @media (max-width:860px){ .about-hero{grid-template-columns:1fr;} }
  .stat-row{display:flex; gap:36px; margin-top:34px; flex-wrap:wrap;}
  .stat-row .n{font-family:"IBM Plex Mono"; font-size:28px; color:var(--accent);}
  .stat-row .l{font-size:12px; color:var(--slate); margin-top:4px;}
  .info-card{border:1px solid var(--line); padding:24px; background:var(--panel);}
  .info-card h4{font-family:"IBM Plex Mono"; font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--slate-soft); font-weight:500;}
  .info-card .val{margin-top:8px; font-size:14.5px;}
  .info-card + .info-card{margin-top:14px;}
  .legal-note{
    margin-top:56px; border-left:3px solid var(--accent); background:var(--accent-tint);
    padding:20px 24px; font-size:13.5px; color:var(--ink);
  }
  .legal-note b{display:block; margin-bottom:6px; font-family:"IBM Plex Mono"; font-size:11.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--accent-deep);}

  /* ---------- contact ---------- */
  .contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:56px;}
  @media (max-width:820px){ .contact-grid{grid-template-columns:1fr;} }
  form.contact-form{display:flex; flex-direction:column; gap:16px;}
  .field label{display:block; font-size:11.5px; text-transform:uppercase; letter-spacing:.07em; color:var(--slate-soft); font-family:"IBM Plex Mono"; margin-bottom:6px;}
  .field input, .field textarea{
    width:100%; border:1px solid var(--line); background:var(--panel); color:var(--ink);
    padding:11px 12px; font-size:14px; border-radius:2px; font-family:"IBM Plex Sans";
  }
  .field textarea{min-height:110px; resize:vertical;}
  .pf-overlay{position:fixed; inset:0; background:rgba(10,15,28,.55); display:none; align-items:center; justify-content:center; z-index:200; padding:20px;}
  .pf-overlay.open{display:flex;}
  .pf-modal{background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:32px; max-width:420px; width:100%; position:relative;}
  .pf-modal h3{margin:0 0 4px;}
  .pf-modal .pf-sub{color:var(--slate); font-size:13.5px; margin-bottom:20px;}
  .pf-modal-close{position:absolute; top:14px; right:16px; background:none; border:0; font-size:20px; color:var(--slate-soft); cursor:pointer; line-height:1;}
  .pf-modal form{display:flex; flex-direction:column; gap:14px;}
  .pf-error{color:#c0453f; font-size:13px; display:none;}
  .pf-error.show{display:block;}
  .contact-list{display:flex; flex-direction:column; gap:0; border-top:1px solid var(--line);}
  .contact-list .row{padding:18px 0; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; gap:16px;}
  .contact-list .row .k{font-size:12px; color:var(--slate-soft); font-family:"IBM Plex Mono";}
  .contact-list .row .v{font-size:14.5px; text-align:right;}
  .form-msg{font-size:13px; padding:10px 0; color:var(--good); display:none;}
  .form-msg.show{display:block;}
  .form-msg.error{color:var(--bad, #c0392b);}

  /* ---------- blog ---------- */
  .blog-empty{
    border:1px dashed var(--line); padding:56px 40px; text-align:center;
  }
  .blog-empty .eyebrow{display:block; margin-bottom:14px;}
  .blog-empty h3{font-size:22px; max-width:36ch; margin:0 auto;}
  .blog-empty p{color:var(--slate); margin-top:14px; max-width:46ch; margin-left:auto; margin-right:auto;}
  .topic-tags{display:flex; gap:8px; flex-wrap:wrap; justify-content:center; margin-top:26px;}
  .topic-tags span{
    border:1px solid var(--line); padding:6px 12px; font-size:12px; font-family:"IBM Plex Mono"; color:var(--slate);
  }

  /* ---------- footer ---------- */
  footer.site{background:var(--navy-950); color:#c3cbe0; padding:60px 0 28px; margin-top:0;}
  .foot-grid{display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px; padding-bottom:36px; border-bottom:1px solid #1f2c48;}
  @media (max-width:720px){ .foot-grid{grid-template-columns:1fr; gap:28px;} }
  .foot-brand{display:flex; align-items:center; gap:10px; margin-bottom:14px;}
  .foot-brand .word{font-family:"Fraunces"; font-size:18px; color:#fff; font-weight:600;}
  footer.site p{font-size:13px; color:#8d9ac2; max-width:32ch;}
  footer.site h5{font-family:"IBM Plex Mono"; font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; color:#6f7ea8; margin-bottom:14px; font-weight:500;}
  .foot-links{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px;}
  .foot-links a, .foot-links button{
    background:none; border:none; padding:0; color:#c3cbe0; font-size:13.5px; text-align:left;
    cursor:pointer; text-decoration:none; font-family:inherit;
  }
  .foot-links a:hover, .foot-links button:hover{color:var(--accent);}
  .foot-bottom{display:flex; justify-content:space-between; padding-top:22px; font-size:12px; color:#5c6a90; flex-wrap:wrap; gap:10px;}

  .reveal{opacity:0; transform:translateY(10px); transition:opacity .5s ease, transform .5s ease;}
  .reveal.in{opacity:1; transform:none;}
  @media (prefers-reduced-motion: reduce){
    .reveal{opacity:1; transform:none; transition:none;}
    html{scroll-behavior:auto;}
  }