:root{
    --ink:#1C252C;
    --ink-2:#212A31;
    --ink-3:#2A3640;
    --line:rgba(255,255,255,0.09);
    --line-2:rgba(255,255,255,0.16);
    --white:#FFFFFF;
    --soft:rgba(255,255,255,0.68);
    --softer:rgba(255,255,255,0.46);
    --mute:rgba(255,255,255,0.34);
    --blue:#1B60F5;
    --blue-soft:rgba(27,96,245,0.14);
    --blue-line:rgba(27,96,245,0.4);
    --teal:#1FB6A8;
    --teal-soft:rgba(31,182,168,0.12);
    --purple:#8B6BF0;
    --purple-soft:rgba(139,107,240,0.12);
    --radius-s:6px;
    --radius-m:10px;
    --radius-l:16px;
    --maxw:1240px;
    --font: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--ink);
    color:var(--white);
    font-family:var(--font);
    -webkit-font-smoothing:antialiased;
    line-height:1.5;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}

  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}

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

  :focus-visible{
    outline:2px solid var(--blue);
    outline-offset:3px;
    border-radius:4px;
  }

  /* ---------- Mono utility text ---------- */
  .mono{
    font-family:var(--mono);
    letter-spacing:0.06em;
    text-transform:uppercase;
  }

  /* ---------- Bracket tag: the signature device ---------- */
  .bracket-tag{
    position:relative;
    display:inline-block;
    padding:3px 12px;
    margin-bottom:18px;
  }
  .bracket-tag::before,
  .bracket-tag::after,
  .bracket-tag i::before,
  .bracket-tag i::after{
    content:"";
    position:absolute;
    width:7px;height:7px;
    border:1px solid var(--blue);
  }
  .bracket-tag::before{ top:0; left:0; border-right:none; border-bottom:none; }
  .bracket-tag::after{ top:0; right:0; border-left:none; border-bottom:none; }
  .bracket-tag i{ position:absolute; inset:0; font-style:normal; }
  .bracket-tag i::before{ bottom:0; left:0; border-right:none; border-top:none; }
  .bracket-tag i::after{ bottom:0; right:0; border-left:none; border-top:none; }
  .bracket-tag span{
    font-family:var(--mono);
    font-size:10.5px;
    font-weight:500;
    letter-spacing:0.1em;
    color:var(--blue);
  }
  .bracket-tag.teal::before,.bracket-tag.teal::after,.bracket-tag.teal i::before,.bracket-tag.teal i::after{border-color:var(--teal);}
  .bracket-tag.teal span{color:var(--teal);}
  .bracket-tag.purple::before,.bracket-tag.purple::after,.bracket-tag.purple i::before,.bracket-tag.purple i::after{border-color:var(--purple);}
  .bracket-tag.purple span{color:var(--purple);}

  /* Floating numbered tag on a card border */
  .float-tag{
    position:absolute;
    top:-1px; left:22px;
    background:var(--ink-2);
    padding:0 8px;
    font-family:var(--mono);
    font-size:10.5px;
    font-weight:500;
    letter-spacing:0.08em;
    color:var(--accent, var(--blue));
  }

  h1,h2,h3{
    margin:0;
    font-weight:600;
    letter-spacing:-0.01em;
  }

  .section-head{max-width:640px;}
  .section-head h2{ font-size:clamp(28px,3.4vw,40px); line-height:1.15; }
  .section-head p{ color:var(--soft); font-size:17px; line-height:1.6; margin-top:18px; }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex; align-items:center; gap:8px;
    padding:13px 24px; border-radius:7px;
    font-size:14.5px; font-weight:600; cursor:pointer;
    border:1px solid transparent; white-space:nowrap;
    transition:transform .15s ease, background .15s ease, border-color .15s ease, opacity .15s ease;
  }
  .btn:active{transform:translateY(1px);}
  .btn-primary{ background:var(--blue); color:#fff; }
  .btn-primary:hover{background:#2f70f7;}
  .btn-ghost{ background:transparent; color:var(--white); border-color:var(--line-2); }
  .btn-ghost:hover{border-color:var(--blue-line); background:var(--blue-soft);}
  .btn-text{ background:none; color:var(--white); padding:0; font-weight:600; border:none; font-family:var(--mono); font-size:12.5px; letter-spacing:0.06em; text-transform:uppercase; display:inline-flex; align-items:center; gap:6px; }
  .btn-text .arrow{transition:transform .15s ease;}
  .btn-text:hover .arrow{transform:translateX(3px);}

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:100;
    background:rgba(28,37,44,0.88);
    backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-row{ display:flex; align-items:center; justify-content:space-between; height:72px; }
  .logo{ font-size:19px; font-weight:700; letter-spacing:-0.01em; display:flex; align-items:center; gap:2px; }
  .logo .bracket{color:var(--blue);}
  .nav-links{ display:flex; gap:36px; list-style:none; margin:0; padding:0; }
  .nav-links a{ font-family:var(--mono); font-size:11.5px; font-weight:500; letter-spacing:0.08em; text-transform:uppercase; color:var(--softer); transition:color .15s ease; }
  .nav-links a:hover{color:var(--white);}
  .nav-right{display:flex; align-items:center; gap:28px;}
  .nav-cta{display:none;}
  @media(min-width:900px){ .nav-cta{display:inline-flex;} }
  .menu-toggle{ display:flex; background:none; border:1px solid var(--line-2); border-radius:7px; padding:9px 11px; color:var(--white); }
  @media(min-width:900px){ .menu-toggle{display:none;} .nav-links{display:flex;} }
  @media(max-width:899px){ .nav-links{display:none;} }
  .mobile-panel{ display:none; flex-direction:column; gap:2px; padding:8px 0 20px; border-top:1px solid var(--line); }
  .mobile-panel.open{display:flex;}
  .mobile-panel a{ padding:12px 4px; font-size:15px; color:var(--soft); border-bottom:1px solid var(--line); }
  .mobile-panel .btn{margin-top:14px; justify-content:center;}

  .glow{ position:absolute; border-radius:50%; filter:blur(90px); pointer-events:none; z-index:0; }

  /* ---------- Hero ---------- */
  .hero{ position:relative; overflow:hidden; padding:88px 0 96px; border-bottom:1px solid var(--line); }
  .hero .glow{ width:640px;height:640px; background:radial-gradient(circle, rgba(27,96,245,0.3) 0%, rgba(27,96,245,0) 70%); top:-220px; right:-160px; }
  .hero-grid{ position:relative; z-index:1; display:grid; grid-template-columns:1fr; gap:56px; align-items:center; }
  @media(min-width:980px){ .hero-grid{grid-template-columns:1.15fr 1fr;} }
  .hero h1{ font-size:clamp(38px,5.4vw,68px); line-height:1.06; letter-spacing:-0.02em; }
  .hero-sub{ max-width:580px; margin-top:22px; color:var(--soft); font-size:17.5px; line-height:1.65; }
  .hero-ctas{ margin-top:34px; display:flex; align-items:center; gap:26px; flex-wrap:wrap; }

  /* Signal feed panel */
  .feed-panel{
    background:var(--ink-2);
    border:1px solid var(--line-2);
    border-radius:var(--radius-l);
    padding:18px;
    box-shadow:0 40px 80px -30px rgba(0,0,0,0.6);
  }
  .feed-head{
    display:flex; align-items:center; justify-content:space-between;
    padding:2px 4px 14px;
    border-bottom:1px solid var(--line);
    margin-bottom:14px;
  }
  .feed-head .mono{ font-size:10.5px; color:var(--softer); }
  .feed-head .live{ display:flex; align-items:center; gap:6px; font-size:10.5px; color:var(--teal); }
  .feed-dot{ width:6px;height:6px;border-radius:50%; background:var(--teal); animation:pulse 2s ease-in-out infinite; }
  @keyframes pulse{ 0%,100%{opacity:1;} 50%{opacity:0.3;} }

  .feed-item{
    position:relative;
    background:var(--ink);
    border:1px solid var(--line);
    border-radius:8px;
    padding:13px 14px 13px 18px;
    margin-bottom:8px;
  }
  .feed-item::before{
    content:""; position:absolute; left:0; top:0; bottom:0; width:2px;
    background:var(--rail, var(--blue));
    border-radius:2px 0 0 2px;
  }
  .feed-item:last-child{margin-bottom:0;}
  .feed-item-top{ display:flex; align-items:center; justify-content:space-between; gap:10px; }
  .feed-item-label{ font-size:14px; font-weight:600; }
  .feed-item-tag{ font-family:var(--mono); font-size:9.5px; letter-spacing:0.06em; padding:2px 8px; border-radius:10px; white-space:nowrap; }
  .feed-item-tag.warn{background:var(--purple-soft); color:#c2b1fb;}
  .feed-item-tag.info{background:var(--teal-soft); color:#7fe0d4;}
  .feed-item-tag.alert{background:var(--blue-soft); color:#8fb3fb;}
  .feed-item-meta{ font-family:var(--mono); font-size:10.5px; color:var(--softer); margin-top:5px; letter-spacing:0.03em; }

  .feed-footer{
    margin-top:14px;
    display:flex;
    gap:8px;
  }
  .feed-stat{
    flex:1;
    border:1px solid var(--line);
    border-radius:8px;
    padding:10px 12px;
  }
  .feed-stat .mono{font-size:9.5px; color:var(--softer); display:block; margin-bottom:4px;}
  .feed-stat .val{font-size:17px; font-weight:700;}

  /* ---------- Always-on flow band (compact, near top) ---------- */
  .flow-band{ padding:48px 0; border-bottom:1px solid var(--line); }
  .flow-head{ margin-bottom:32px; max-width:620px; }
  .flow-head p{ color:var(--soft); font-size:15px; line-height:1.6; margin-top:10px; }
  .flow-row{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
  @media(max-width:860px){ .flow-row{flex-direction:column; align-items:stretch;} }
  .flow-node{
    flex:1; min-width:190px;
    background:var(--ink-2); border:1px solid var(--line-2); border-radius:var(--radius-m);
    padding:18px 20px; position:relative;
  }
  .flow-node.gate{ border-color:var(--blue-line); background:linear-gradient(180deg, rgba(27,96,245,0.14), rgba(27,96,245,0.04)); }
  .flow-node .fn-tag{ font-family:var(--mono); font-size:10px; letter-spacing:0.08em; color:var(--softer); margin-bottom:8px; display:block; }
  .flow-node .fn-title{ font-size:15px; font-weight:600; margin-bottom:5px; }
  .flow-node .fn-sub{ font-size:12.5px; color:var(--soft); line-height:1.5; }
  .flow-arrow-h{ color:var(--softer); flex-shrink:0; }
  @media(max-width:860px){ .flow-arrow-h{ transform:rotate(90deg); align-self:center; } }
  .proof{ padding:40px 0; border-bottom:1px solid var(--line); }
  .proof-row{ display:flex; flex-direction:column; gap:22px; align-items:flex-start; justify-content:space-between; }
  @media(min-width:800px){ .proof-row{flex-direction:row; align-items:center;} }
  .proof-label{ font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:0.1em; text-transform:uppercase; color:var(--softer); white-space:nowrap; }
  .proof-logos{ display:flex; gap:48px; flex-wrap:wrap; align-items:center; }
  .proof-logos span{ font-size:18px; font-weight:700; color:rgba(255,255,255,0.36); letter-spacing:0.01em; }

  section.block{ padding:100px 0; border-bottom:1px solid var(--line); position:relative; }

  /* ---------- Problem section ---------- */
  .problem-grid{ display:grid; grid-template-columns:1fr; gap:56px; }
  @media(min-width:940px){ .problem-grid{grid-template-columns:1fr 1fr; align-items:start;} }
  .problem-cards{display:flex; flex-direction:column; gap:14px;}
  .p-card{
    position:relative;
    background:var(--ink-2);
    border:1px solid var(--line);
    border-radius:var(--radius-m);
    padding:22px 24px 22px 26px;
  }
  .p-card::before{
    content:""; position:absolute; left:0; top:14px; bottom:14px; width:2px;
    background:var(--accent, var(--blue));
  }
  .p-card .mono.num{ font-size:11px; font-weight:500; color:var(--accent, var(--blue)); margin-bottom:8px; display:block; }
  .p-card h3{font-size:16.5px; margin-bottom:8px;}
  .p-card p{font-size:14.5px; color:var(--soft); margin:0; line-height:1.6;}

  /* ---------- Platform cards ---------- */
  .platform-cards{ margin-top:56px; display:grid; grid-template-columns:1fr; gap:24px; }
  @media(min-width:940px){ .platform-cards{grid-template-columns:repeat(3,1fr);} }
  .plat-card{
    position:relative;
    background:var(--ink-2);
    border:1px solid var(--line);
    border-radius:var(--radius-l);
    padding:30px 26px 28px;
    display:flex; flex-direction:column; height:100%;
    transition:border-color .2s ease, transform .2s ease;
  }
  .plat-card:hover{border-color:var(--line-2); transform:translateY(-3px);}
  .plat-visual{
    height:118px; border-radius:var(--radius-m); margin-bottom:24px;
    border:1px solid var(--line); position:relative; overflow:hidden; background:var(--ink);
  }
  .plat-visual .fill{ position:absolute; inset:0; background:radial-gradient(ellipse at 25% 15%, var(--glow-color, var(--blue-soft)), transparent 65%); }
  .plat-visual .grid-overlay{
    position:absolute; inset:0;
    background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size:18px 18px;
    opacity:0.4;
  }
  .plat-visual .rows{position:relative; padding:16px; display:flex; flex-direction:column; gap:7px;}
  .plat-visual .row-line{height:8px; border-radius:3px; background:rgba(255,255,255,0.08);}
  .plat-visual .row-line.short{width:50%;}
  .plat-visual .row-line.med{width:75%;}
  .plat-label{ font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:0.1em; color:var(--accent); margin-bottom:12px; }
  .plat-card h3{font-size:19px; line-height:1.3; margin-bottom:12px;}
  .plat-card > p{font-size:14.5px; color:var(--soft); line-height:1.6; margin-bottom:18px;}
  .plat-list{ list-style:none; margin:0 0 22px; padding:0; display:flex; flex-direction:column; gap:9px; flex-grow:1; }
  .plat-list li{ font-size:13.5px; color:var(--soft); padding-left:18px; position:relative; }
  .plat-list li::before{ content:""; position:absolute; left:0; top:7px; width:6px; height:6px; border-radius:50%; background:var(--accent); }
  .plat-card .btn-text{margin-top:auto;}

  /* ---------- Learning loop ---------- */
  .loop-wrap{margin-top:64px;}
  .loop-track{ display:grid; grid-template-columns:repeat(5,1fr); gap:14px; position:relative; }
  @media(max-width:900px){ .loop-track{grid-template-columns:1fr; gap:0;} }
  .loop-step{
    position:relative;
    background:var(--ink-2); border:1px solid var(--line); border-radius:var(--radius-m);
    padding:24px 18px; text-align:left;
  }
  @media(max-width:900px){
    .loop-step{ border-radius:0; border-left:none; border-right:none; border-top:none; padding:22px 4px; }
    .loop-step:first-child{border-top:1px solid var(--line);}
  }
  .loop-num{ position:absolute; top:-1px; left:16px; background:var(--ink-2); padding:0 7px; font-family:var(--mono); font-size:10px; color:var(--blue); }
  @media(max-width:900px){ .loop-num{background:var(--ink);} }
  .loop-icon{
    width:38px;height:38px; border-radius:9px; background:var(--blue-soft); border:1px solid var(--blue-line);
    display:flex; align-items:center; justify-content:center; margin-bottom:16px; color:var(--blue);
  }
  .loop-step h3{font-size:16px; margin-bottom:6px;}
  .loop-step p{font-size:13.5px; color:var(--soft); margin:0; line-height:1.55;}
  .loop-arrow{ display:none; position:absolute; top:38px; right:-11px; color:var(--softer); z-index:2; }
  @media(min-width:901px){ .loop-step:not(:last-child) .loop-arrow{display:block;} }

  /* ---------- Control failure section ---------- */
  .cf-grid{ display:grid; grid-template-columns:1fr; gap:56px; align-items:center; }
  @media(min-width:980px){ .cf-grid{grid-template-columns:1fr 1.05fr;} }
  .cf-callout{
    margin:26px 0 0; padding:18px 20px 18px 22px; position:relative;
    background:var(--blue-soft); border-radius:8px; font-size:15.5px; line-height:1.6;
  }
  .cf-callout::before{ content:""; position:absolute; left:0; top:12px; bottom:12px; width:2px; background:var(--blue); }
  .cf-callout .no{color:var(--softer); font-weight:500;}
  .cf-callout .yes{color:var(--white); font-weight:600; display:block; margin-top:8px; font-family:var(--mono); font-size:14px; letter-spacing:0.01em;}

  .cf-panel{ position:relative; background:var(--ink-2); border:1px solid var(--line-2); border-radius:var(--radius-l); padding:26px; }
  .cf-node-center{ text-align:center; margin-bottom:22px; }
  .cf-node-center .tag{ display:block; font-family:var(--mono); font-size:10.5px; font-weight:500; letter-spacing:0.08em; text-transform:uppercase; color:var(--softer); margin-bottom:8px; }
  .cf-node-center .name{ display:inline-flex; background:var(--blue); color:#fff; padding:10px 20px; border-radius:8px; font-weight:700; font-size:15px; }
  .cf-connector{ height:26px; width:1px; background:linear-gradient(var(--blue-line), transparent); margin:0 auto; }
  .cf-events{ display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin-bottom:20px; }
  @media(max-width:640px){ .cf-events{grid-template-columns:1fr;} }
  .cf-event{ background:rgba(255,255,255,0.03); border:1px solid var(--line); border-radius:8px; padding:12px; text-align:center; }
  .cf-event .yr{ font-family:var(--mono); font-size:11.5px; color:var(--blue); font-weight:500; margin-bottom:6px; }
  .cf-event .desc{font-size:12.5px; color:var(--white); font-weight:600; margin-bottom:3px;}
  .cf-event .loc{font-size:11.5px; color:var(--softer);}
  .cf-alert{
    background:var(--purple-soft); border:1px solid rgba(139,107,240,0.35); border-radius:8px;
    padding:14px 16px; display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:14px; flex-wrap:wrap;
  }
  .cf-alert .label{font-size:13.5px; font-weight:700; color:#c2b1fb;}
  .cf-alert .stat{ font-family:var(--mono); font-size:12px; color:var(--soft); }
  .cf-responses{ display:flex; gap:10px; flex-wrap:wrap; }
  .cf-chip{ font-family:var(--mono); font-size:11px; color:var(--soft); background:rgba(255,255,255,0.04); border:1px solid var(--line); padding:6px 11px; border-radius:6px; }

  /* ---------- Reasoning layer section ---------- */
  .reason-sources{ display:grid; grid-template-columns:1fr; gap:16px; margin-top:60px; }
  @media(min-width:900px){ .reason-sources{grid-template-columns:1fr 1fr 1fr;} }
  .src-card{ position:relative; background:var(--ink-2); border:1px solid var(--line); border-radius:var(--radius-m); padding:22px; }
  .src-card h3{ font-family:var(--mono); font-size:12.5px; font-weight:500; letter-spacing:0.06em; text-transform:uppercase; margin-bottom:14px; color:var(--white); }
  .src-card ul{margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap:8px;}
  .src-card li{font-size:13.5px; color:var(--soft); padding-left:16px; position:relative;}
  .src-card li::before{content:"–"; position:absolute; left:0; color:var(--softer);}
  .reason-down{ display:flex; justify-content:center; margin:22px 0; color:var(--softer); }
  .reason-core{
    max-width:520px; margin:0 auto;
    background:linear-gradient(180deg, rgba(27,96,245,0.14), rgba(27,96,245,0.04));
    border:1px solid var(--blue-line); border-radius:var(--radius-l); padding:26px 28px; text-align:center;
  }
  .reason-core h3{font-size:18px; margin-bottom:8px;}
  .reason-core p{font-size:13.5px; color:var(--soft); margin:0; font-family:var(--mono);}
  .reason-outputs{ display:flex; justify-content:center; gap:12px; margin-top:22px; flex-wrap:wrap; }
  .reason-output{ font-family:var(--mono); font-size:11.5px; font-weight:500; letter-spacing:0.04em; padding:9px 18px; border-radius:6px; border:1px solid var(--line-2); color:var(--soft); }

  /* ---------- Outcome ---------- */
  .outcome-card{
    background:var(--ink-2); border:1px solid var(--line-2); border-radius:var(--radius-l);
    padding:56px; display:grid; grid-template-columns:1fr; gap:40px;
  }
  @media(min-width:980px){ .outcome-card{grid-template-columns:1fr 1fr; align-items:center; padding:60px 64px;} }
  @media(max-width:640px){ .outcome-card{padding:36px 26px;} }
  .outcome-logo{ font-family:var(--mono); font-size:12px; font-weight:500; letter-spacing:0.1em; color:var(--softer); margin-bottom:22px; }
  .outcome-stat{ font-size:clamp(42px,5vw,58px); font-weight:700; color:var(--blue); line-height:1; margin-bottom:16px; font-family:var(--mono); }
  .outcome-card p.desc{color:var(--soft); font-size:15.5px; line-height:1.65; margin-bottom:0;}
  .outcome-metrics{ display:flex; flex-direction:column; gap:18px; }
  .outcome-metric{ display:flex; gap:14px; align-items:flex-start; padding-bottom:18px; border-bottom:1px solid var(--line); }
  .outcome-metric:last-child{border-bottom:none; padding-bottom:0;}
  .om-icon{ width:30px;height:30px;flex-shrink:0; border-radius:7px; background:var(--blue-soft); display:flex;align-items:center;justify-content:center; color:var(--blue); margin-top:2px; }
  .outcome-metric h4{font-size:15px; font-weight:600; margin:0 0 4px;}
  .outcome-metric p{font-size:13.5px; color:var(--soft); margin:0; line-height:1.5;}
  .outcome-card .btn-text{margin-top:26px; display:inline-flex;}

  /* ---------- Architecture ---------- */
  .arch-wrap{ margin-top:56px; display:flex; flex-direction:column; align-items:center; gap:10px; }
  .arch-box{ width:100%; max-width:620px; border:1px solid var(--line-2); border-radius:var(--radius-m); padding:20px 24px; text-align:center; background:var(--ink-2); }
  .arch-box.core{ border-color:var(--blue-line); background:linear-gradient(180deg, rgba(27,96,245,0.16), rgba(27,96,245,0.05)); }
  .arch-box .t{font-size:15px; font-weight:700; margin-bottom:6px;}
  .arch-box .s{ font-family:var(--mono); font-size:11.5px; color:var(--soft); letter-spacing:0.02em; }
  .arch-arrow{color:var(--softer);}

  /* ---------- Enterprise readiness tiles ---------- */
  .tiles{
    margin-top:52px; display:grid; grid-template-columns:1fr; gap:1px; background:var(--line);
    border:1px solid var(--line); border-radius:var(--radius-m); overflow:hidden;
  }
  @media(min-width:700px){ .tiles{grid-template-columns:1fr 1fr;} }
  @media(min-width:1040px){ .tiles{grid-template-columns:repeat(3,1fr);} }
  .tile{ background:var(--ink-2); padding:26px 24px; }
  .tile h3{font-size:15.5px; margin-bottom:8px; display:flex; align-items:center; gap:9px;}
  .tile .ti-dot{width:6px;height:6px;border-radius:50%;background:var(--blue);}
  .tile p{font-size:13.5px; color:var(--soft); margin:0; line-height:1.55;}

  /* ---------- Final CTA ---------- */
  .final-cta{ position:relative; overflow:hidden; text-align:center; padding:120px 0; }
  .final-cta .glow{ width:900px; height:500px; background:radial-gradient(ellipse, rgba(27,96,245,0.36), transparent 70%); top:-160px; left:50%; transform:translateX(-50%); }
  .final-cta-inner{position:relative; z-index:1; max-width:680px; margin:0 auto;}
  .final-cta h2{font-size:clamp(30px,4.2vw,46px); line-height:1.15;}
  .final-cta p{color:var(--soft); font-size:17px; margin-top:20px; line-height:1.6;}
  .final-cta .hero-ctas{justify-content:center; margin-top:34px;}

  /* ---------- Footer ---------- */
  footer{padding:64px 0 32px;}
  .footer-top{ display:grid; grid-template-columns:1fr; gap:44px; padding-bottom:48px; border-bottom:1px solid var(--line); }
  @media(min-width:800px){ .footer-top{grid-template-columns:1.4fr 1fr 1fr 1fr;} }
  .footer-brand p{font-size:14px; color:var(--softer); max-width:280px; margin-top:14px; line-height:1.6;}
  .footer-col h4{ font-family:var(--mono); font-size:11px; font-weight:500; text-transform:uppercase; letter-spacing:0.08em; color:var(--softer); margin-bottom:16px; }
  .footer-col ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px;}
  .footer-col a{font-size:14px; color:var(--soft); transition:color .15s ease;}
  .footer-col a:hover{color:var(--white);}
  .footer-bottom{ display:flex; flex-direction:column; gap:16px; align-items:flex-start; justify-content:space-between; padding-top:28px; font-family:var(--mono); font-size:11.5px; color:var(--softer); }
  @media(min-width:700px){ .footer-bottom{flex-direction:row; align-items:center;} }
  .footer-bottom-links{display:flex; gap:22px; flex-wrap:wrap;}
  .footer-bottom-links a{color:var(--softer);}
  .footer-bottom-links a:hover{color:var(--soft);}

  .reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
  .reveal.in{ opacity:1; transform:translateY(0); }

  /* ---------- Reasoning demo (scroll-synced) ---------- */
  .sync-section{ position:relative; margin-top:8px; }
  .sync-grid{ display:grid; grid-template-columns:1fr 1fr; gap:0; }
  @media(max-width:900px){ .sync-grid{grid-template-columns:1fr;} }

  .chat-col{ padding:32px 48px 32px 0; border-right:1px solid var(--line); }
  @media(max-width:900px){ .chat-col{border-right:none; padding:24px 0;} }

  .chat-step{ min-height:22vh; display:flex; flex-direction:column; justify-content:center; padding:10px 0; }
  .chat-step:first-child{min-height:18vh;}
  .chat-step:last-child{min-height:18vh;}
  @media(max-height:700px){
    .chat-step{min-height:190px;}
    .chat-step:first-child, .chat-step:last-child{min-height:150px;}
  }

  .bubble{ max-width:88%; border-radius:12px; padding:14px 16px; font-size:14.5px; line-height:1.55; margin-bottom:12px; }
  .bubble.user{ background:var(--blue-soft); border:1px solid var(--blue-line); margin-left:auto; color:var(--white); border-bottom-right-radius:3px; }
  .bubble.ai{ background:var(--ink-2); border:1px solid var(--line); color:var(--soft); border-bottom-left-radius:3px; }
  .bubble.ai b{color:var(--white); font-weight:600;}
  .bubble .options{ margin-top:10px; display:flex; flex-direction:column; gap:6px; }
  .bubble .opt{ font-family:var(--mono); font-size:11.5px; letter-spacing:0.02em; border:1px solid var(--line-2); border-radius:6px; padding:8px 10px; color:var(--soft); }
  .bubble .opt b{color:var(--white);}
  .bubble-tag{ font-family:var(--mono); font-size:10px; letter-spacing:0.08em; text-transform:uppercase; color:var(--softer); margin-bottom:6px; display:block; }

  .sticky-col{ position:relative; }
  .sticky-inner{
    position:sticky; top:8vh; height:min(56vh, 460px);
    display:flex; flex-direction:column; justify-content:center;
    padding:0 0 0 56px;
  }
  @media(max-width:900px){ .sticky-inner{position:relative; top:0; height:auto; padding:24px 0; } }

  .step-count{ font-family:var(--mono); font-size:14px; color:var(--blue); margin-bottom:20px; }
  .step-count .of{color:var(--softer);}
  .step-headline{ font-size:clamp(24px,2.4vw,32px); line-height:1.2; margin-bottom:14px; max-width:440px; transition:opacity .3s ease; }
  .step-body{ color:var(--soft); font-size:14.5px; line-height:1.65; max-width:420px; margin-bottom:26px; transition:opacity .3s ease; }
  .step-visual{ position:relative; background:var(--ink-2); border:1px solid var(--line-2); border-radius:var(--radius-l); padding:22px; max-width:420px; min-height:150px; transition:opacity .3s ease; }

  .progress-track{ margin-top:24px; max-width:420px; height:2px; background:var(--line-2); border-radius:2px; position:relative; }
  .progress-fill{ position:absolute; top:0; left:0; height:100%; background:var(--blue); border-radius:2px; width:0%; transition:width .3s ease; }
  .progress-dot{ position:absolute; top:50%; transform:translate(-50%,-50%); width:10px; height:10px; border-radius:50%; background:var(--blue); left:0%; transition:left .3s ease; box-shadow:0 0 0 4px var(--blue-soft); }

  .mv-node{ display:inline-flex; background:var(--blue); color:#fff; font-weight:700; font-size:13px; padding:8px 16px; border-radius:8px; }
  .mv-row{ display:flex; gap:8px; margin-top:14px; flex-wrap:wrap; }
  .mv-chip{ font-family:var(--mono); font-size:10.5px; color:var(--soft); background:rgba(255,255,255,0.04); border:1px solid var(--line); padding:6px 10px; border-radius:6px; }
  .mv-bar-row{display:flex; align-items:center; gap:10px; margin-bottom:10px;}
  .mv-bar-label{font-size:12px; color:var(--soft); width:130px; flex-shrink:0;}
  .mv-bar-track{flex:1; height:6px; background:var(--line-2); border-radius:3px; overflow:hidden;}
  .mv-bar-fill{height:100%; background:var(--blue); border-radius:3px;}
  .mv-alert{ background:rgba(139,107,240,0.12); border:1px solid rgba(139,107,240,0.35); border-radius:8px; padding:12px 14px; font-size:12.5px; color:#c2b1fb; font-weight:600; }
  .mv-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:8px;}
  .mv-list li{font-size:13px; color:var(--soft); padding-left:16px; position:relative;}
  .mv-list li::before{content:"";position:absolute;left:0;top:7px;width:5px;height:5px;border-radius:50%;background:var(--teal);}