.nav-links a[aria-current="page"]{ color:var(--ink); }
  .nav-links a[aria-current="page"]::after{ content:""; }
  .has-drop{ position:relative; }
  .caret{ width:.6rem; height:.6rem; transition:transform .25s ease; }
  .has-drop[aria-expanded="true"] .caret{ transform:rotate(180deg); }
  .drop{
    position:absolute; top:calc(100% + 1rem); left:50%; transform:translateX(-50%) translateY(6px);
    min-width:280px; background:var(--bone); border:1px solid rgba(12,18,22,.12); border-radius:4px;
    padding:.5rem; opacity:0; visibility:hidden; transition:opacity .2s ease, transform .2s ease;
    box-shadow:0 24px 60px -24px rgba(12,18,22,.35);
  }
  .has-drop[aria-expanded="true"] .drop{ opacity:1; visibility:visible; transform:translateX(-50%) translateY(0); }
  .drop a{ display:block; padding:.7rem .8rem; border-radius:3px; color:var(--paper-70); font-size:.9rem; }
  .drop a:hover{ background:rgba(12,18,22,.05); color:var(--ink); }
  .drop a span{ display:block; font-family:var(--mono); font-size:.66rem; letter-spacing:.12em; text-transform:uppercase; color:var(--bronze-lo); margin-top:.15rem; }
  .cta-nav{ margin-left:.5rem; }
  .burger{ display:none; margin-left:auto; background:none; border:0; cursor:pointer; padding:.4rem; }
  .burger span{ display:block; width:24px; height:2px; background:var(--ink); margin:5px 0; transition:transform .3s, opacity .3s; }

  /* mobile menu */
  .mobile-menu{ display:none; }
  @media (max-width: 940px){
    .nav-links{ display:none; }
    .burger{ display:block; }
    .mobile-menu{
      display:block; position:fixed; inset:74px 0 0 0; z-index:70;
      background:var(--bone); padding:2rem var(--edge); transform:translateY(-8px);
      opacity:0; visibility:hidden; transition:opacity .3s ease, transform .3s ease; overflow-y:auto;
    }
    .mobile-menu.open{ opacity:1; visibility:visible; transform:none; }
    .mobile-menu a{ display:block; font-size:1.35rem; font-family:var(--serif); padding:.7rem 0; border-bottom:1px solid rgba(12,18,22,.1); color:var(--ink); }
    .mobile-menu .sub{ font-size:.95rem; font-family:var(--sans); color:var(--paper-70); padding-left:1rem; border:0; }
    .mobile-menu .btn{ margin-top:1.5rem; width:100%; justify-content:center; }
  }

  /* shared artifact chip (from homepage method) */
  .artifact-chip{
    display:inline-flex; flex-direction:column; gap:.3rem; padding:.9rem 1.1rem;
    border:1px dashed var(--ink-3); border-radius:5px; background:rgba(192,137,74,.05);
  }
  .artifact-chip .al{ font-family:var(--mono); font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--bronze-lo); }
  .artifact-chip .an{ font-size:1.05rem; color:var(--bone); font-weight:600; }
  .artifact-chip .ad{ font-size:.82rem; color:var(--ink-45); }

  
  /* ============ SOLUTION HERO ============ */
  .sol-hero{ padding-block:clamp(3.5rem,7vw,6rem) clamp(3rem,6vw,5rem); overflow:hidden; }
  .sol-hero-grid{ display:grid; grid-template-columns:1.25fr .75fr; gap:clamp(2rem,4vw,4.5rem); align-items:center; }
  .sol-hero h1{ font-size:clamp(2.4rem,5.4vw,4.4rem); line-height:1; letter-spacing:-.03em; margin-top:1.9rem; }
  .sol-hero h1 em{ font-style:italic; color:var(--bronze-hi); }
  .sol-hero .support{ margin-top:1.9rem; max-width:52ch; color:var(--ink-70); font-size:clamp(1.02rem,1.4vw,1.2rem); line-height:1.55; }
  .sol-hero-actions{ margin-top:2.4rem; display:flex; gap:1rem; flex-wrap:wrap; }
  .fit-panel{ border:1px solid var(--ink-3); border-radius:6px; background:var(--ink-2); padding:1.4rem 1.5rem; }
  .fit-panel .fp-lab{ font-family:var(--mono); font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; color:var(--bronze); margin-bottom:.6rem; }
  .fit-panel ul{ list-style:none; margin:0; padding:0; }
  .fit-panel li{ display:flex; align-items:baseline; gap:.75rem; padding:.7rem 0; border-top:1px solid var(--ink-3); font-size:.96rem; color:var(--limestone); }
  .fit-panel li:first-child{ border-top:0; }
  .fit-panel li::before{ content:""; flex:0 0 auto; width:.4rem; height:.4rem; border-radius:50%; background:var(--bronze); transform:translateY(.15rem); }
  @media(max-width:900px){ .sol-hero-grid{ grid-template-columns:1fr; gap:2.5rem; } .fit-panel{ order:2; } }

  /* ============ SITUATION ============ */
  .sit-head{ max-width:60ch; margin-bottom:clamp(2rem,4vw,3rem); }
  .sit-head h2{ font-family:var(--serif); font-size:clamp(1.8rem,3.4vw,2.8rem); }
  .sit-head h2 em{ font-style:italic; color:var(--bronze-lo); }
  .sit-grid{ display:grid; grid-template-columns:1.05fr 1fr; gap:clamp(2rem,5vw,4rem); align-items:start; }
  .sit-lede{ font-size:clamp(1.05rem,1.6vw,1.25rem); color:var(--paper-70); line-height:1.55; }
  .sit-signals{ border-top:1px solid rgba(12,18,22,.16); }
  .sit-signals .ss{ display:grid; grid-template-columns:auto 1fr; gap:1rem; padding:1rem 0; border-bottom:1px solid rgba(12,18,22,.14); align-items:baseline; }
  .sit-signals .ss .n{ font-family:var(--mono); font-size:.7rem; color:var(--bronze-lo); }
  .sit-signals .ss p{ color:var(--ink); font-size:.98rem; }
  @media(max-width:820px){ .sit-grid{ grid-template-columns:1fr; } }

  /* ============ METHOD TIE-IN ============ */
  .tie{ background:var(--ink-2); border-top:1px solid var(--ink-3); }
  .tie .wrap{ display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(2rem,5vw,4rem); align-items:center; }
  .tie h2{ font-family:var(--serif); font-size:clamp(1.7rem,3.2vw,2.4rem); }
  .tie h2 em{ font-style:italic; color:var(--bronze-hi); }
  .tie .rel{ margin-top:1.2rem; color:var(--ink-70); max-width:42ch; }
  .tie .rel a{ color:var(--bronze-hi); border-bottom:1px solid rgba(215,168,103,.4); }
  .tie-list{ display:flex; flex-direction:column; gap:1px; background:var(--ink-3); border:1px solid var(--ink-3); border-radius:6px; overflow:hidden; }
  .tie-list .tl{ background:var(--ink); padding:1rem 1.2rem; display:grid; grid-template-columns:auto 1fr; gap:1rem; align-items:baseline; }
  .tie-list .tl .s{ font-family:var(--mono); font-size:.66rem; letter-spacing:.08em; text-transform:uppercase; color:var(--bronze); white-space:nowrap; }
  .tie-list .tl p{ font-size:.94rem; color:var(--limestone); }
  @media(max-width:820px){ .tie .wrap{ grid-template-columns:1fr; } }

  /* ============ HOW WE DELIVER ============ */
  .dl-head{ max-width:56ch; margin-bottom:clamp(2rem,4vw,3rem); }
  .dl-head h2{ font-family:var(--serif); font-size:clamp(1.8rem,3.4vw,2.8rem); }
  .dl-head h2 em{ font-style:italic; color:var(--bronze-lo); }
  .dl-list{ border-top:1px solid rgba(12,18,22,.16); }
  .dl-row{ display:grid; grid-template-columns:auto 1.05fr 1.55fr; gap:1.2rem 2.5rem; padding:1.4rem 0; border-bottom:1px solid rgba(12,18,22,.16); align-items:baseline; }
  .dl-row .dn{ font-family:var(--mono); font-size:.78rem; color:var(--bronze-lo); }
  .dl-row h3{ font-family:var(--serif); font-weight:500; font-size:1.2rem; color:var(--ink); }
  .dl-row p{ color:var(--paper-70); font-size:.96rem; }
  @media(max-width:820px){ .dl-row{ grid-template-columns:auto 1fr; gap:.3rem 1rem; } .dl-row p{ grid-column:2; } }
  /* Experience list on dark Ink surface — contrast fix (scoped; leaves light-surface .dl-row untouched) */
  .dl-list--ondark{ border-top-color:var(--ink-3); }
  .dl-list--ondark .dl-row{ border-bottom-color:var(--ink-3); }
  .dl-list--ondark .dl-row h3{ color:var(--bone); }
  .dl-list--ondark .dl-row p{ color:var(--ink-70); }

  /* ============ TECHNOLOGY (contextual per solution) ============ */
  .sol-tech{ background:var(--ink); }
  .sol-tech .wrap{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,5vw,4rem); align-items:start; }
  .sol-tech h2{ font-family:var(--serif); font-size:clamp(1.7rem,3.2vw,2.4rem); }
  .sol-tech h2 em{ font-style:italic; color:var(--bronze-hi); }
  .sol-tech .rel{ margin-top:1.2rem; color:var(--ink-70); max-width:44ch; }
  .sol-tech .attrib{ margin-top:1.2rem; font-family:var(--mono); font-size:.72rem; letter-spacing:.05em; color:var(--ink-45); }
  .tg-caps{ list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:.6rem; align-content:start; }
  .tg-caps li{ font-family:var(--mono); font-size:.72rem; letter-spacing:.04em; color:var(--bronze-hi); border:1px solid var(--ink-3); border-radius:100px; padding:.5rem .9rem; background:rgba(192,137,74,.06); }
  .tg-note{ margin-top:1rem; font-size:.9rem; color:var(--ink-70); max-width:40ch; }

  /* ============ PROOF POINTER ============ */
  .proofline{ background:var(--limestone); color:var(--ink); }
  .proofline .wrap{ display:flex; justify-content:space-between; align-items:center; gap:2rem; flex-wrap:wrap; }
  .proofline .pl-copy h2{ font-family:var(--serif); font-size:clamp(1.5rem,2.8vw,2.1rem); max-width:24ch; }
  .proofline .pl-copy p{ color:var(--paper-70); max-width:44ch; margin-top:.5rem; font-size:.96rem; }

  /* ============ RELATED ============ */
  .related{ background:var(--ink-2); border-top:1px solid var(--ink-3); }
  .related h2{ font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--bronze); margin-bottom:1.2rem; }
  .rel-list{ border-top:1px solid var(--ink-3); }
  .rel-row{ display:grid; grid-template-columns:1fr auto; gap:1rem; padding:1.15rem 0; border-bottom:1px solid var(--ink-3); align-items:center; transition:padding-left .3s ease; }
  .rel-row:hover{ padding-left:.7rem; }
  .rel-row .rt{ font-family:var(--serif); font-size:1.18rem; color:var(--limestone); }
  .rel-row .rd{ color:var(--ink-45); font-size:.9rem; margin-top:.15rem; }
  .rel-row .go{ color:var(--bronze-hi); display:flex; align-items:center; gap:.4rem; font-size:.9rem; font-weight:600; white-space:nowrap; }
  .rel-row .go svg{ transition:transform .25s ease; }
  .rel-row:hover .go svg{ transform:translateX(4px); }

  /* ============ SOLUTION CTA ============ */
  .sol-cta{ background:var(--bone); color:var(--ink); position:relative; overflow:hidden; }
  .sol-cta::before{ content:""; position:absolute; inset:0; pointer-events:none; background:radial-gradient(70% 120% at 90% 0%, rgba(192,137,74,.10), transparent 55%); }
  .sol-cta .wrap{ position:relative; z-index:1; display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(2rem,5vw,4rem); align-items:center; }
  .sol-cta h2{ font-family:var(--serif); font-weight:400; font-size:clamp(1.9rem,4vw,3.2rem); line-height:1.05; max-width:18ch; }
  .sol-cta h2 em{ font-style:italic; color:var(--bronze-lo); }
  .sol-cta .sub{ margin-top:1.2rem; color:var(--paper-70); max-width:42ch; }
  .sol-cta-actions{ display:flex; flex-direction:column; gap:1rem; align-items:flex-start; }
  .sol-cta-actions .aside{ font-family:var(--mono); font-size:.7rem; letter-spacing:.06em; color:var(--paper-45); }
  @media(max-width:820px){ .sol-cta .wrap{ grid-template-columns:1fr; } }

  /* brand logo */
  .brand{ display:inline-flex; align-items:center; }
  .brand img{ height:44px; width:auto; display:block; }
  .foot-logo{ height:48px; width:auto; display:block; }
  @media(max-width:520px){ .brand img{ height:36px; } }
/* ============ FOOTER ============ */
  footer.site{ background:var(--ink); border-top:1px solid var(--ink-3); padding-block:clamp(3rem,5vw,4.5rem) 2.5rem; }
  .foot-grid{ display:grid; grid-template-columns:1.4fr repeat(4,1fr); gap:2.5rem 2rem; }
  .foot-brand .brand{ font-size:1.5rem; }
  .foot-brand p{ margin-top:1rem; color:var(--ink-45); font-size:.86rem; max-width:30ch; }
  .foot-col h4{ font-family:var(--mono); font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--bronze-lo); font-weight:500; margin-bottom:1rem; }
  .foot-col a{ display:block; color:var(--ink-70); font-size:.9rem; padding:.35rem 0; transition:color .2s; }
  .foot-col a:hover{ color:var(--bone); }
  .foot-bottom{ margin-top:clamp(2.5rem,5vw,3.5rem); padding-top:1.5rem; border-top:1px solid var(--ink-3); display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; }
  .foot-bottom p{ font-size:.78rem; color:var(--ink-45); }
  .foot-bottom .legal{ font-family:var(--mono); letter-spacing:.02em; }
  @media(max-width:860px){ .foot-grid{ grid-template-columns:1fr 1fr; } }
  @media(max-width:520px){ .foot-grid{ grid-template-columns:1fr; } }

  /* ---- reveal animation ---- */
  .reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
  .reveal.in{ opacity:1; transform:none; }
  @media (prefers-reduced-motion: reduce){
    .reveal{ opacity:1 !important; transform:none !important; transition:none !important; }
    .sys-arc .arc-run{ display:none; }
  }

  /* brand logo */
  .brand{ display:inline-flex; align-items:center; }
  .brand img{ height:44px; width:auto; display:block; }
  .foot-logo{ height:48px; width:auto; display:block; }
  @media(max-width:520px){ .brand img{ height:36px; } }

  /* ---- About page specifics ---- */
  .abt-principles{ margin-top:2.2rem; display:grid; grid-template-columns:1fr 1fr; gap:0; border-top:1px solid rgba(12,18,22,.14); }
  .abt-principles .pr{ display:flex; align-items:flex-start; gap:.7rem; padding:1.05rem .2rem; border-bottom:1px solid rgba(12,18,22,.14); font-family:var(--serif); font-size:clamp(1.05rem,1.6vw,1.28rem); color:var(--ink); line-height:1.28; }
  .abt-principles .pr span{ margin-top:.6rem; width:6px; height:6px; border-radius:50%; background:var(--bronze); flex:none; }
  @media (max-width:720px){ .abt-principles{ grid-template-columns:1fr; } }
  .abt-split{ display:grid; grid-template-columns:1fr 1fr; gap:1.6rem; margin-top:.3rem; }
  .abt-split .sp{ border-top:2px solid var(--bronze); padding-top:1rem; }
  .abt-split .sp-lab{ font-family:var(--mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--bronze-hi); margin-bottom:.55rem; }
  .abt-split .sp p{ color:var(--ink-70); }
  @media (max-width:720px){ .abt-split{ grid-template-columns:1fr; } }
  .abt-entities{ margin-top:2rem; display:grid; grid-template-columns:1fr 1fr; gap:0; border-top:1px solid rgba(12,18,22,.14); }
  .abt-entities .ent{ padding:1.6rem 1.6rem 1.6rem 0; border-bottom:1px solid rgba(12,18,22,.14); }
  .abt-entities .ent-lab{ font-family:var(--mono); font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; color:var(--bronze-lo); margin-bottom:.7rem; }
  .abt-entities .ent-co{ font-family:var(--serif); font-size:clamp(1.1rem,1.7vw,1.4rem); color:var(--ink); line-height:1.25; }
  .abt-entities .ent-loc{ font-family:var(--sans); font-size:.95rem; color:var(--paper-70); margin-top:.35rem; }
  @media (max-width:720px){ .abt-entities{ grid-template-columns:1fr; } }
  /* Who thrives here — sit-signals on dark Ink surface (scoped; shared rule untouched) */
  .sit-signals--ondark{ border-top-color:var(--ink-3); }
  .sit-signals--ondark .ss{ border-bottom-color:var(--ink-3); }
  .sit-signals--ondark .ss p{ color:var(--ink-70); }