:root{
    --ink:#080D18;
    --ink-soft:#2A3140;
    --ember:#EC600C;
    --ember-deep:#C64E08;
    --paper:#FAF8F4;
    --paper-dim:#F1EDE5;
    --slate:#5B6472;
    --line:#E1DCD1;
    --ember-tint:#FDEADB;
    --on-ember:#FFFFFF;
    --radius:2px;

    /* fixed dark-accent surface — used by sections that stay dark in both
       themes (process loop, footer), independent of the light/dark flip below */
    --dark-surface:#0B0F19;
    --dark-text:#F5F3EE;
    --dark-muted:#9AA3B4;
    --dark-line:#1B2231;
  }

  @media (prefers-color-scheme: dark){
    :root{
      --ink:#F5F3EE;
      --ink-soft:#C7CCD6;
      --paper:#0B0F17;
      --paper-dim:#161B26;
      --slate:#9AA3B4;
      --line:#232B3B;
      --ember-tint:#3A2313;
    }
  }

  *{box-sizing:border-box; margin:0; padding:0;}

  html{scroll-behavior:smooth;}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
  }

  body{
    background:var(--paper);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }

  h1,h2,h3{
    font-family:'Space Grotesk', sans-serif;
    font-weight:600;
    letter-spacing:-0.01em;
    color:var(--ink);
  }

  .mono{
    font-family:'IBM Plex Mono', monospace;
    letter-spacing:0.06em;
    text-transform:uppercase;
  }

  a{color:inherit; text-decoration:none;}

  img{max-width:100%; display:block;}

  .wrap{
    max-width:1180px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- corner ticks (blueprint registration marks) ---------- */
  .ticked{position:relative;}
  .ticked::before, .ticked::after,
  .ticked .tick-br, .ticked .tick-bl{
    content:"";
    position:absolute;
    width:14px; height:14px;
    border:1.5px solid var(--ember);
    opacity:0.55;
  }
  .ticked::before{ top:-1px; left:-1px; border-right:none; border-bottom:none; }
  .ticked::after{ top:-1px; right:-1px; border-left:none; border-bottom:none; }
  .ticked .tick-bl{ bottom:-1px; left:-1px; border-right:none; border-top:none; }
  .ticked .tick-br{ bottom:-1px; right:-1px; border-left:none; border-top:none; }

  /* ---------- nav ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 32px;
    max-width:1180px; margin:0 auto;
  }
  .brand{display:flex; align-items:center; gap:10px;}
  .brand img{height:30px; width:30px;}
  .brand span{font-family:'Space Grotesk', sans-serif; font-weight:700; font-size:20px; letter-spacing:-0.01em;}
  .nav-right{display:flex; align-items:center; gap:18px;}

  /* ---------- theme-aware logo swap ---------- */
  .logo-dark{display:none;}
  @media (prefers-color-scheme: dark){
    .logo-light{display:none;}
    .logo-dark{display:block;}
  }
  .pill{
    font-size:11px; padding:6px 12px;
    border:1px solid var(--ember);
    color:var(--ember-deep);
    border-radius:99px;
    font-weight:500;
  }
  .x-link{
    width:32px; height:32px;
    display:flex; align-items:center; justify-content:center;
    border:1px solid var(--line);
    border-radius:50%;
    transition:border-color .2s, transform .2s;
  }
  .x-link:hover{border-color:var(--ink); transform:translateY(-1px);}
  .x-link svg{width:14px; height:14px;}

  /* ---------- hero ---------- */
  .hero{
    position:relative;
    padding:96px 32px 80px;
    overflow:hidden;
  }
  .blueprint-grid{
    position:absolute; inset:0;
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size:44px 44px;
    opacity:0.5;
    mask-image:radial-gradient(ellipse 70% 60% at 50% 30%, black 40%, transparent 90%);
    -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 30%, black 40%, transparent 90%);
  }
  .hero-inner{
    position:relative;
    max-width:900px;
    margin:0 auto;
    text-align:center;
  }
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    font-size:12px; color:var(--ember-deep); font-weight:500;
    margin-bottom:28px;
  }
  .eyebrow .dot{width:6px; height:6px; border-radius:50%; background:var(--ember); animation:pulse 1.8s ease-in-out infinite;}
  @keyframes pulse{ 0%,100%{opacity:1;} 50%{opacity:0.3;} }

  .hero h1{
    font-size:clamp(34px, 5.2vw, 60px);
    line-height:1.08;
    margin-bottom:24px;
  }
  .hero h1 .accent{color:var(--ember);}

  .hero p.sub{
    font-size:18px;
    color:var(--slate);
    max-width:560px;
    margin:0 auto 44px;
  }

  /* schematic Q with branching paths */
  .schematic{
    position:relative;
    width:100%;
    max-width:620px;
    margin:0 auto 48px;
  }
  .schematic svg{width:100%; height:auto; overflow:visible;}
  .schem-label{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:0.08em;
    fill:var(--slate);
  }

  /* email capture */
  .capture{
    display:flex; gap:0;
    max-width:420px;
    margin:0 auto;
    border:1.5px solid var(--ink);
  }
  .capture input{
    flex:1;
    border:none;
    background:transparent;
    padding:14px 16px;
    font-family:'IBM Plex Sans', sans-serif;
    font-size:14px;
    color:var(--ink);
    outline:none;
  }
  .capture input::placeholder{color:#9CA3AF;}
  .capture button{
    border:none;
    background:var(--ink);
    color:var(--paper);
    padding:14px 22px;
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    cursor:pointer;
    transition:background .2s;
    white-space:nowrap;
  }
  .capture button:hover{background:var(--ember);}
  .capture button:focus-visible, .capture input:focus-visible{outline:2px solid var(--ember); outline-offset:2px;}
  .capture-note{font-size:12px; color:var(--slate); margin-top:12px;}

  /* ---------- section shared ---------- */
  section{padding:88px 32px;}
  .section-head{max-width:640px; margin:0 auto 56px; text-align:center;}
  .section-head .mono{font-size:11px; color:var(--ember-deep); display:block; margin-bottom:14px;}
  .section-head h2{font-size:clamp(26px, 3.4vw, 36px); margin-bottom:14px;}
  .section-head p{color:var(--slate); font-size:16px;}

  /* ---------- two modes ---------- */
  .modes{
    max-width:1180px; margin:0 auto;
    display:grid; grid-template-columns:1fr 1fr; gap:24px;
  }
  .mode-card{
    padding:36px 32px 32px;
    background:var(--paper);
  }
  .mode-card .icon-box{
    width:44px; height:44px;
    display:flex; align-items:center; justify-content:center;
    border:1.5px solid var(--ink);
    margin-bottom:24px;
  }
  .mode-card .icon-box svg{width:20px; height:20px;}
  .mode-card.build .icon-box{border-color:var(--ember); color:var(--ember-deep);}
  .mode-card h3{font-size:21px; margin-bottom:10px;}
  .mode-card p{color:var(--slate); font-size:14.5px; margin-bottom:20px;}
  .tag-row{display:flex; flex-wrap:wrap; gap:8px;}
  .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:10.5px;
    letter-spacing:0.03em;
    padding:5px 10px;
    background:var(--paper-dim);
    color:var(--ink-soft);
  }

  /* ---------- process ---------- */
  .process-wrap{background:var(--dark-surface); color:var(--dark-text); padding:88px 32px;}
  .process-wrap .section-head .mono{color:var(--ember);}
  .process-wrap .section-head h2{color:var(--dark-text);}
  .process-wrap .section-head p{color:var(--dark-muted);}

  .flow{
    max-width:1180px; margin:0 auto;
    display:grid; grid-template-columns:repeat(4, 1fr);
    gap:0;
    position:relative;
  }
  .flow-node{
    position:relative;
    padding:0 20px;
    text-align:left;
  }
  .flow-node .num{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px; color:var(--ember);
    margin-bottom:16px;
    display:block;
  }
  .flow-node h4{
    font-family:'Space Grotesk', sans-serif;
    font-size:18px; font-weight:600;
    margin-bottom:8px;
  }
  .flow-node p{font-size:13.5px; color:var(--dark-muted);}
  .flow-connector{
    position:absolute;
    top:5px;
    left:0;
    width:20px;
    height:1px;
    background-image:linear-gradient(90deg, var(--ember) 0 6px, transparent 6px 12px);
    background-size:12px 1px;
    background-repeat:repeat-x;
    pointer-events:none;
  }
  .flow-node:first-child .flow-connector{display:none;}

  /* ---------- dashboard preview ---------- */
  .dash-wrap{max-width:640px; margin:0 auto;}
  .dash-panel{
    border:1.5px solid var(--ink);
    background:var(--paper);
  }
  .dash-head{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 24px;
    border-bottom:1px solid var(--line);
  }
  .dash-head .mono{font-size:11px; color:var(--slate);}
  .dash-title{display:flex; align-items:baseline; gap:10px;}
  .dash-title h4{font-family:'Space Grotesk', sans-serif; font-size:17px;}
  .dash-pct{font-family:'IBM Plex Mono', monospace; color:var(--ember-deep); font-size:14px;}
  .dash-bar-track{height:6px; background:var(--paper-dim); margin:0;}
  .dash-bar-fill{height:100%; width:38%; background:var(--ember);}
  .dash-list{padding:8px 24px 22px;}
  .dash-item{
    display:flex; align-items:center; gap:12px;
    padding:11px 0;
    border-bottom:1px dashed var(--line);
    font-size:14.5px;
  }
  .dash-item:last-child{border-bottom:none;}
  .check{
    width:18px; height:18px;
    border:1.5px solid var(--ink-soft);
    flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
  }
  .dash-item.done .check{background:var(--ember); border-color:var(--ember);}
  .dash-item.done .check svg{width:11px; height:11px; stroke:var(--on-ember);}
  .dash-item.done span{color:var(--ink);}
  .dash-item:not(.done) span{color:var(--slate);}

  /* ---------- team ---------- */
  .team{max-width:1180px; margin:0 auto; display:grid; grid-template-columns:1fr 1fr; gap:24px;}
  .team-card{padding:28px; border-top:2px solid var(--ink);}
  .team-card .mono{font-size:10.5px; color:var(--ember-deep); display:block; margin-bottom:10px;}
  .team-card h4{font-family:'Space Grotesk', sans-serif; font-size:18px;}

  /* ---------- footer / coming soon ---------- */
  footer{
    background:var(--dark-surface);
    color:var(--dark-text);
    padding:96px 32px 40px;
    text-align:center;
  }
  footer .mono{font-size:11px; color:var(--ember); display:block; margin-bottom:20px;}
  footer h2{color:var(--dark-text); font-size:clamp(28px, 4vw, 42px); margin-bottom:16px; max-width:640px; margin-left:auto; margin-right:auto;}
  footer p.sub{color:var(--dark-muted); max-width:460px; margin:0 auto 40px; font-size:15px;}
  footer .capture{border-color:var(--ember); margin-bottom:16px;}
  footer .capture input{color:var(--dark-text);}
  footer .capture input::placeholder{color:#6B7480;}
  footer .capture button{background:var(--ember); color:var(--on-ember);}
  footer .capture button:hover{background:var(--dark-text); color:var(--dark-surface);}
  footer .capture-note{color:#6B7480;}

  .foot-bottom{
    margin-top:80px;
    padding-top:24px;
    border-top:1px solid var(--dark-line);
    display:flex; align-items:center; justify-content:space-between;
    max-width:1180px; margin-left:auto; margin-right:auto;
    font-size:12.5px; color:#6B7480;
  }
  .foot-bottom a{transition:color .2s;}
  .foot-bottom a:hover{color:var(--ember);}

  /* ---------- reveal animation (progressive enhancement: visible by default) ---------- */
  .reveal{transition:opacity .6s ease, transform .6s ease;}
  .reveal.reveal-init{opacity:0; transform:translateY(16px);}
  .reveal.reveal-init.in{opacity:1; transform:translateY(0);}

  /* ---------- responsive ---------- */
  @media (max-width:860px){
    .modes{grid-template-columns:1fr;}
    .flow{grid-template-columns:1fr; gap:36px;}
    .flow-connector{display:none;}
    .team{grid-template-columns:1fr;}
    .capture{flex-direction:column; max-width:340px;}
    .capture button{padding:14px;}
  }