/* Layout: technical spec-sheet precision — steady grid, hairline rules, mono data labels, one signal accent */
  :root {
    --ink: #0c1722;          /* near-black, blue bias */
    --paper: #f4f6f8;        /* cool paper neutral */
    --surface: #ffffff;
    --surface-2: #eef1f4;
    --line: #d4dae0;
    --fg: #16222e;
    --fg-soft: #51606d;
    --accent: #1766d6;       /* signal blue */
    --accent-soft: #e4eefb;
    --signal: #e08a00;       /* amber — live data / spec endpoints only */
    --good: #1a8a5a;
    --font-display: "Saira", "Arial Narrow", system-ui, sans-serif;
    --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ink: #e8eef4;
      --paper: #0a131c;
      --surface: #101d29;
      --surface-2: #16242f;
      --line: #273947;
      --fg: #dde6ee;
      --fg-soft: #93a4b3;
      --accent: #4f93f0;
      --accent-soft: #15293f;
      --signal: #f0a633;
      --good: #44b784;
      color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --ink: #e8eef4;
    --paper: #0a131c;
    --surface: #101d29;
    --surface-2: #16242f;
    --line: #273947;
    --fg: #dde6ee;
    --fg-soft: #93a4b3;
    --accent: #4f93f0;
    --accent-soft: #15293f;
    --signal: #f0a633;
    --good: #44b784;
    color-scheme: dark;
  }

  * { box-sizing: border-box; }
  body {
    background: var(--paper);
    color: var(--fg);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  h1, h2, h3, .display { font-family: var(--font-display); text-wrap: balance; font-weight: 600; letter-spacing: -0.01em; }
  .mono { font-family: var(--font-mono); }
  .eyebrow {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0;
  }
  a { color: inherit; }
  .wrap {
    max-width: 1140px;
    margin-inline: auto;
    padding-left: max(20px, env(safe-area-inset-left, 0px));
    padding-right: max(20px, env(safe-area-inset-right, 0px));
  }

  /* ---- top bar painter for safe area ---- */
  body::before {
    content: "";
    position: fixed;
    inset: 0 0 auto;
    height: env(safe-area-inset-top, 0px);
    background: var(--surface);
    z-index: 60;
  }

  /* ---- header ---- */
  header {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 50;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .nav {
    display: flex; align-items: center; gap: 1.5rem;
    padding-block: 0.75rem;
  }
  .brand { display: flex; align-items: baseline; gap: 0.45rem; text-decoration: none; margin-right: auto; }
  .brand .mark { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; letter-spacing: 0.04em; }
  .brand .cjk { font-size: 1rem; color: var(--fg-soft); }
  .navlinks { display: flex; gap: 1.4rem; }
  .navlinks a { text-decoration: none; color: var(--fg-soft); font-size: 0.9rem; transition: color .15s; }
  .navlinks a:hover { color: var(--accent); }
  .btn {
    font-family: var(--font-body);
    font-size: 0.9rem; font-weight: 600;
    padding: 0.55rem 1.05rem;
    border-radius: 2px;
    border: 1px solid var(--accent);
    background: var(--accent); color: #fff;
    cursor: pointer; text-decoration: none; white-space: nowrap;
    transition: filter .15s;
  }
  .btn:hover { filter: brightness(1.08); }
  .btn.ghost { background: transparent; color: var(--accent); }
  @media (max-width: 860px) { .navlinks { display: none; } }

  /* ---- hero ---- */
  .hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); background: var(--surface); }
  .hero-grid {
    display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 2.5rem; align-items: center;
    padding-block: clamp(2.5rem, 6vw, 5rem);
  }
  .hero h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); line-height: 1.02; margin: 0.8rem 0 0; }
  .hero h1 .hl { color: var(--accent); }
  .hero p.lead { font-size: 1.12rem; color: var(--fg-soft); max-width: 34ch; margin: 1.1rem 0 0; }
  .hero-cta { display: flex; gap: 0.8rem; margin-top: 1.8rem; flex-wrap: wrap; }
  canvas#spectrum { width: 100%; height: 280px; display: block; border: 1px solid var(--line); border-radius: 3px; background: var(--ink); max-width: 100%; }
  .scope-cap { font-family: var(--font-mono); font-size: 0.68rem; color: var(--fg-soft); margin-top: 0.5rem; letter-spacing: 0.04em; display: flex; justify-content: space-between; }
  @media (max-width: 760px) { .hero-grid { grid-template-columns: 1fr; gap: 1.6rem; } }

  /* ---- chain strip ---- */
  .chain { background: var(--ink); color: #dfe8f0; border-bottom: 1px solid var(--line); }
  .chain .wrap { padding-block: 1.1rem; }
  .chain-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.55rem 0.5rem; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.02em; }
  .chain-row .step { color: #eef4fa; display: inline-flex; flex-direction: column; line-height: 1.25; }
  .chain-row .step .m { font-size: 0.56rem; letter-spacing: 0.12em; text-transform: uppercase; margin-top: 0.1rem; }
  .chain-row .step.in .m { color: var(--signal); }
  .chain-row .step.pt { color: #aebccb; }
  .chain-row .step.pt .m { color: #7d93a8; }
  .chain-row .arrow { color: var(--signal); align-self: flex-start; margin-top: 0.15rem; }
  .chain-row .lbl { color: #7d93a8; margin-right: 0.4rem; text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.68rem; }

  /* ---- sections ---- */
  section { padding-block: clamp(3rem, 7vw, 5.5rem); }
  .sec-head { max-width: 60ch; margin-bottom: 2.2rem; }
  .sec-head h2 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); margin: 0.5rem 0 0; }
  .sec-head p { color: var(--fg-soft); margin: 0.7rem 0 0; }

  /* capability cards */
  .cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
  .card { background: var(--surface); padding: 1.6rem 1.5rem; display: flex; flex-direction: column; min-width: 0; }
  .card .idx { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); letter-spacing: 0.1em; }
  .card h3 { font-size: 1.18rem; margin: 0.6rem 0 0; }
  .card p { color: var(--fg-soft); font-size: 0.93rem; margin: 0.5rem 0 0.9rem; }
  .card ul { list-style: none; margin: auto 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.35rem; }
  .card ul li { font-family: var(--font-mono); font-size: 0.68rem; color: var(--fg); background: var(--surface-2); border: 1px solid var(--line); padding: 0.16rem 0.45rem; border-radius: 2px; }
  /* in-house vs partner mode badge */
  .mode { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.14rem 0.4rem; border-radius: 2px; white-space: nowrap; }
  .mode.in { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
  .mode.pt { color: var(--fg-soft); background: var(--surface-2); border: 1px solid var(--line); }
  .card .idxrow { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
  @media (max-width: 860px) { .cards { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .cards { grid-template-columns: 1fr; } }

  /* why — feature rows */
  .why { background: var(--surface); border-block: 1px solid var(--line); }
  .why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem 2.4rem; }
  .why-item { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; }
  .why-item .num { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; color: var(--accent); line-height: 1; min-width: 2.2rem; }
  .why-item h3 { font-size: 1.1rem; margin: 0; }
  .why-item p { color: var(--fg-soft); font-size: 0.93rem; margin: 0.35rem 0 0; }
  @media (max-width: 680px) { .why-grid { grid-template-columns: 1fr; } }

  /* process */
  .steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 3px; overflow: hidden; counter-reset: s; }
  .step-c { background: var(--surface); padding: 1.3rem 1.1rem; min-width: 0; }
  .step-c .n { font-family: var(--font-mono); font-size: 0.72rem; color: var(--signal); letter-spacing: 0.1em; }
  .step-c h3 { font-size: 1rem; margin: 0.5rem 0 0.35rem; }
  .step-c p { font-size: 0.84rem; color: var(--fg-soft); margin: 0; }
  @media (max-width: 900px) { .steps { grid-template-columns: repeat(3, 1fr); } }
  @media (max-width: 520px) { .steps { grid-template-columns: repeat(2, 1fr); } }

  /* about stats */
  .about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 2.6rem; align-items: center; }
  .about-grid p { color: var(--fg-soft); }
  .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
  .stat { background: var(--surface); padding: 1.3rem 1rem; text-align: center; }
  .stat .v { font-family: var(--font-display); font-weight: 700; font-size: 1.9rem; color: var(--accent); font-variant-numeric: tabular-nums; }
  .stat .k { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-soft); margin-top: 0.3rem; }
  @media (max-width: 720px) { .about-grid { grid-template-columns: 1fr; gap: 1.6rem; } }

  /* contact */
  .contact { background: var(--ink); color: #e6edf4; }
  .contact .sec-head h2 { color: #fff; }
  .contact .sec-head p { color: #9fb2c4; }
  .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; }
  .field { display: flex; flex-direction: column; gap: 0.3rem; margin-bottom: 0.9rem; }
  .field label { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: #9fb2c4; }
  .field input, .field select, .field textarea {
    font-family: var(--font-body); font-size: 0.95rem;
    background: #0a131c; color: #eaf1f7;
    border: 1px solid #28384a; border-radius: 2px; padding: 0.6rem 0.7rem;
    width: 100%;
  }
  .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
  .field textarea { resize: vertical; min-height: 90px; }
  .contact-info { font-size: 0.95rem; }
  .info-row { border-top: 1px solid #28384a; padding: 0.9rem 0; display: grid; grid-template-columns: 7rem 1fr; gap: 0.6rem; align-items: baseline; }
  .info-row:first-child { border-top: none; }
  .info-row .k { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: #8aa0b4; }
  .info-row .val { word-break: break-word; }
  .copybtn { font-family: var(--font-mono); font-size: 0.72rem; background: transparent; color: var(--accent); border: 1px solid var(--accent); border-radius: 2px; padding: 0.2rem 0.55rem; cursor: pointer; margin-left: 0.5rem; }
  #inquiry-out { margin-top: 0.8rem; }
  .note { font-size: 0.78rem; color: #8aa0b4; margin-top: 0.6rem; }
  @media (max-width: 720px) { .contact-grid { grid-template-columns: 1fr; } }

  /* footer */
  footer { background: var(--surface); border-top: 1px solid var(--line); }
  footer .wrap { padding-block: 2rem; display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: baseline; }
  footer .legal { font-size: 0.82rem; color: var(--fg-soft); max-width: 46ch; }
  footer .legal strong { color: var(--fg); font-weight: 600; }
  .compliance { font-family: var(--font-mono); font-size: 0.68rem; color: var(--fg-soft); letter-spacing: 0.02em; }

  @media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

@font-face{font-family:Saira;font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/saira-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:Saira;font-style:normal;font-weight:600;font-display:swap;src:url('/fonts/saira-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:Saira;font-style:normal;font-weight:700;font-display:swap;src:url('/fonts/saira-latin-700-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/ibm-plex-sans-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;src:url('/fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2')}
html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0}main{min-height:60vh}img,svg{max-width:100%}p{max-width:76ch}section{padding-block:4rem}a{ text-underline-offset:4px}a:focus-visible,button:focus-visible{outline:3px solid var(--signal);outline-offset:4px}.brand{flex-direction:column;align-items:flex-start;gap:0;line-height:1.15}.brand .mark{font-size:1.2rem;letter-spacing:.045em}.brand .submark{font-family:var(--font-mono);font-size:.59rem;letter-spacing:.18em;color:var(--fg-soft);margin-top:4px}.hero h1{font-size:clamp(2.5rem,4.6vw,3.8rem);line-height:1.08}.hero p.lead{max-width:49ch;font-size:1.02rem}.hero .hero-grid{padding-block:clamp(3rem,6vw,5rem)}.hero-visual{min-width:0}.visual-top{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:.68rem;color:var(--fg-soft);padding-block:.6rem}.signal-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--signal);margin-right:7px}.scope-cap{gap:1rem;flex-wrap:wrap}.hero-label{border-top:1px solid var(--line);margin-top:1.8rem;padding-top:1rem;font-size:.75rem;color:var(--fg-soft);font-family:var(--font-mono)}.menu-toggle{display:none;background:transparent;color:var(--fg);border:1px solid var(--line);padding:.55rem .75rem;font:inherit}.navlinks a[aria-current=page]{color:var(--accent)}.skip-link{position:fixed;top:-100px;left:1rem;z-index:99;background:var(--surface);padding:.8rem}.skip-link:focus{top:1rem}.section-link{display:inline-block;margin-top:1rem;font-weight:600;color:var(--accent);text-decoration:none}.card{display:flex;flex-direction:column}.card .section-link{margin-top:auto;padding-top:1rem}.card h3{font-size:1.3rem}.section-foot{margin-top:2rem;display:flex;gap:1rem;flex-wrap:wrap}.soft-section{background:var(--surface-2);border-block:1px solid var(--line)}.intro-section{background:var(--surface);border-bottom:1px solid var(--line);padding-block:3rem 3.5rem}.breadcrumb{font-family:var(--font-mono);font-size:.72rem;color:var(--fg-soft);margin-bottom:2.5rem}.page-heading{font-size:clamp(2.3rem,5vw,3.8rem);line-height:1.12;margin:.8rem 0 1rem;max-width:22ch}.intro-lead{font-size:1.12rem;color:var(--fg-soft);max-width:65ch}.detail-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:3rem;align-items:start}.detail-grid h2{font-size:1.7rem;margin-top:0}.detail-grid p{color:var(--fg-soft)}.requirements{background:var(--surface);border:1px solid var(--line);padding:1.6rem}.requirements h2{font-size:1.15rem}.requirements ul{padding-left:1.1rem;color:var(--fg-soft)}.requirements li{margin-block:.65rem}.numbered-list{list-style:none;padding:0;counter-reset:st}.numbered-list li{counter-increment:st;display:grid;grid-template-columns:2rem 1fr;gap:.8rem;padding:1.1rem 0;border-top:1px solid var(--line)}.numbered-list li:before{content:'0'counter(st);font-family:var(--font-mono);color:var(--accent)}.numbered-list h3{margin:0 0 .3rem;font-size:1.1rem}.numbered-list p{margin:0}.diagram{width:100%;height:auto;background:#0c1722;border:1px solid var(--line);border-radius:3px;color:#dfe8f0}.cta-band{background:#0c1722;color:#e6edf4;border-block:1px solid #28384a}.cta-band h2{font-size:clamp(1.7rem,4vw,2.4rem);margin:.5rem 0}.cta-band p{color:#a8bacb}.cta-grid{display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap}.contact{background:#0c1722}.contact a{color:#a9cbff}.contact .btn{color:#fff}.contact .sec-head h1{color:#fff}.contact .field select{min-height:44px}.form-pair{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-note{font-size:.8rem;color:#a8bacb}.status{font-size:.9rem;margin-block:1rem;color:#d9e9fa;min-height:1.5em}.status[data-state=error]{color:#ffcf80}.status[data-state=success]{color:#8ee0b5}button:disabled{opacity:.55;cursor:not-allowed}.hp{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.privacy-copy{max-width:76ch}.privacy-copy h2{margin-top:2.2rem;font-size:1.5rem}.footer-links{display:flex;flex-wrap:wrap;gap:1rem;font-size:.82rem}.footer-bottom{width:100%;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:1rem}.copyright{font-size:.75rem;color:var(--fg-soft)}.contact .info-row{grid-template-columns:6rem 1fr}.empty-state{padding-block:5rem}.empty-state h1{font-size:3rem;margin-bottom:1rem}.legal-name{overflow-wrap:anywhere}.diagram-label{font-family:var(--font-mono);font-size:.65rem;color:var(--fg-soft);margin-top:.5rem}.stats{margin-top:1.5rem}.card ul{margin-bottom:1rem}.nowrap{white-space:nowrap}
@media(max-width:1000px){.nav{gap:.9rem}.navlinks{gap:.85rem}.navlinks a{font-size:.8rem}.nav>.btn{font-size:.8rem}}
@media(max-width:860px){.nav{flex-wrap:wrap}.navlinks{display:flex;flex-wrap:wrap;width:100%;order:4;padding-block:.7rem}.navlinks a{font-size:.95rem}.menu-toggle{display:block}.js .navlinks{display:none}.js .navlinks.is-open{display:flex}.nav>.btn{padding:.5rem .65rem}.detail-grid{grid-template-columns:1fr;gap:1.5rem}}
@media(max-width:520px){section{padding-block:2.5rem}.brand .mark{font-size:1.05rem}.brand .submark{font-size:.5rem}.nav{gap:.55rem}.menu-toggle{font-size:.78rem;padding:.5rem}.nav>.btn{font-size:.75rem}.hero h1{font-size:2.45rem}.hero .hero-grid{padding-block:2.5rem}.hero-label{font-size:.68rem}.form-pair{grid-template-columns:1fr;gap:0}.contact .info-row{grid-template-columns:1fr;gap:.3rem}.requirements{padding:1.2rem}.stats .stat{padding:.9rem .45rem}.intro-section{padding-block:2rem}.page-heading{font-size:2.3rem}.breadcrumb{margin-bottom:1.6rem}.cta-grid{gap:1rem}}
.chain{background:#0c1722}canvas#spectrum{background:#0c1722}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}