:root{
    --paper:#F5F6FA; --paper-2:#ECEEF5; --panel:#FFFFFF;
    --navy:#12233D; --navy-2:#1B3358; --navy-3:#24406B;
    --deep:#0A1730; --deep-2:#0F2140;
    --ink:#12233D; --muted:rgba(18,35,61,.62); --muted-2:rgba(18,35,61,.42);
    --cream-text:#F4F1E8; --muted-on-navy:rgba(244,241,232,.62);
    --border:rgba(18,35,61,.11); --border-navy:rgba(244,241,232,.14);
    --gold:#C79350; --gold-2:#E3B274; --gold-soft:rgba(199,147,80,.16); --gold-line:rgba(199,147,80,.45);
    --mono:'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
    --sans:'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --display:'Space Grotesk', 'Inter', sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} *,*::before,*::after{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important;} }
  html,body{margin:0;padding:0;background:var(--paper);color:var(--ink);font-family:var(--sans);}
  a{color:inherit;text-decoration:none;transition:color .2s ease, opacity .2s ease;}
  img{max-width:100%;display:block;}
  .wrap{max-width:1160px;margin:0 auto;padding:0 24px;}
  :focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px;}

  /* reveal-on-scroll */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);}
  .reveal.in{opacity:1;transform:translateY(0);}

  /* ===== Logo ===== */
  .logomark{display:flex;align-items:center;gap:9px;}
  .logomark img{height:26px;width:auto;transition:transform .3s ease;}
  .logomark:hover img{transform:scale(1.08) rotate(-3deg);}
  .logomark .word{font-family:var(--display);font-weight:600;letter-spacing:.01em;font-size:18px;color:var(--navy);text-transform:lowercase;}
  .on-dark-logo{filter:brightness(0) invert(1);}

  /* ===== Buttons ===== */
  .btn{font-family:var(--sans);font-size:14px;font-weight:600;border-radius:10px;padding:12px 22px;display:inline-flex;align-items:center;gap:8px;cursor:pointer;border:1.5px solid transparent;white-space:nowrap;transition:background-color .2s ease, color .2s ease, box-shadow .2s ease, border-color .2s ease;}
  .btn-primary{background:linear-gradient(135deg, var(--gold), var(--gold-2));color:var(--deep);box-shadow:0 12px 24px -10px rgba(199,147,80,.55);}
  .btn-primary:hover{box-shadow:0 16px 30px -8px rgba(199,147,80,.7);}
  .btn-ghost{background:transparent;border-color:var(--border);color:var(--navy);}
  .btn-ghost:hover{background:rgba(18,35,61,.06);}
  .btn-ghost.on-navy{border-color:var(--border-navy);color:var(--cream-text);}
  .btn-ghost.on-navy:hover{background:rgba(244,241,232,.08);}
  .btn-sm{padding:9px 16px;font-size:13px;border-radius:8px;}
  .arrow{transition:transform .2s ease;display:inline-block;}
  .btn:hover .arrow{transform:translate(2px,-2px);}
  .magnetic{}

  /* ===== Icon system ===== */
  .icon-badge{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(18,35,61,.06);flex:none;transition:background-color .25s ease, transform .25s ease;}
  .icon-badge svg{width:22px;height:22px;stroke:var(--navy);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
  .icon-badge.sm{width:36px;height:36px;border-radius:10px;}
  .icon-badge.sm svg{width:18px;height:18px;}
  .icon-badge.on-navy{background:rgba(244,241,232,.1);}
  .icon-badge.on-navy svg{stroke:var(--cream-text);}
  .icon-badge.gold svg{stroke:var(--gold);}

  /* ===== Header ===== */
  header{position:sticky;top:0;z-index:60;height:72px;display:flex;align-items:center;border-bottom:1px solid var(--border);background:rgba(245,246,250,.82);backdrop-filter:blur(12px);transition:box-shadow .3s ease;}
  header.scrolled{box-shadow:0 8px 24px -16px rgba(10,23,48,.35);}
  header .wrap{display:flex;align-items:center;justify-content:space-between;width:100%;}
  nav.mainnav{display:flex;align-items:center;gap:30px;font-size:14px;}
  nav.mainnav a{color:var(--muted);position:relative;padding-bottom:3px;}
  nav.mainnav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1.5px;background:var(--gold);transition:right .25s ease;}
  nav.mainnav a:hover{color:var(--navy);}
  nav.mainnav a:hover::after,nav.mainnav a.active::after{right:0;}
  nav.mainnav a.active{color:var(--navy);}
  .navright{display:flex;align-items:center;gap:16px;}
  .github-link{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:6px;}
  .github-link:hover{color:var(--navy);}
  .hamburger{display:none;flex-direction:column;gap:4px;cursor:pointer;}
  .hamburger span{width:20px;height:1.5px;background:var(--navy);}

  /* ===== Hero stage (dark) ===== */
  .hero-stage{position:relative;background:radial-gradient(1100px 620px at 50% -10%, var(--navy-2), var(--deep) 62%);overflow:hidden;border-radius:0 0 32px 32px;padding-bottom:2px;}
  .hero-stage canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;}
  .hero-stage::after{content:"";position:absolute;inset:0;background:radial-gradient(480px circle at var(--mx,50%) var(--my,20%), rgba(199,147,80,.16), transparent 60%);pointer-events:none;transition:opacity .3s ease;}
  .hero{padding:76px 0 0;text-align:center;position:relative;z-index:2;}
  .hero-logo-wrap{position:relative;width:150px;margin:0 auto 30px;}
  .hero-logo-wrap::before{content:"";position:absolute;inset:-40px -30px;border-radius:50%;background:radial-gradient(circle, rgba(199,147,80,.32), transparent 68%);animation:pulseGlow 4s ease-in-out infinite;}
  .hero-logo-wrap img{position:relative;z-index:1;width:100%;filter:brightness(0) invert(1);animation:floaty 5.5s ease-in-out infinite;}
  @keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}
  @keyframes pulseGlow{0%,100%{opacity:.6;transform:scale(1);}50%{opacity:1;transform:scale(1.08);}}
  .eyebrow-pill{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--muted-on-navy);text-transform:uppercase;border:1px solid var(--border-navy);border-radius:999px;padding:7px 15px;margin-bottom:26px;}
  .eyebrow-pill.on-light{color:var(--muted);border-color:var(--border);}
  .eyebrow-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);}
  h1.headline{font-family:var(--display);font-size:66px;line-height:1.03;color:var(--cream-text);margin:0 auto 22px;font-weight:600;letter-spacing:-0.02em;max-width:16ch;}
  .subhead{font-size:19px;color:var(--muted-on-navy);max-width:44ch;margin:0 auto 36px;line-height:1.55;}
  .hero-ctas{display:flex;gap:14px;justify-content:center;margin-bottom:52px;}

  .hero-visual-wrap{position:relative;padding:0 24px 0;}
  .chip-strip{display:flex;justify-content:center;gap:14px;margin-bottom:-30px;position:relative;z-index:3;}
  .chip-strip .icon-badge{background:rgba(244,241,232,.06);border:1px solid var(--border-navy);box-shadow:0 14px 26px -10px rgba(0,0,0,.4);}
  .chip-strip .icon-badge svg{stroke:var(--cream-text);}
  .chip-strip .icon-badge:hover{transform:translateY(-4px);background:rgba(244,241,232,.12);}
  .app-window{max-width:980px;margin:0 auto;background:rgba(10,23,48,.6);border:1px solid var(--border-navy);border-radius:18px;overflow:hidden;box-shadow:0 60px 100px -40px rgba(0,0,0,.7);backdrop-filter:blur(6px);}
  .app-window-head{display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--border-navy);background:rgba(244,241,232,.03);}
  .app-window-head .dot{width:9px;height:9px;border-radius:50%;background:rgba(247,241,228,.18);}
  .app-window-head .label{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--muted-on-navy);}
  .app-window-body{display:grid;grid-template-columns:180px 1fr 220px;min-height:340px;color:var(--cream-text);}
  .aw-col{padding:16px;border-right:1px solid var(--border-navy);text-align:left;}
  .aw-col:last-child{border-right:none;}
  .aw-title{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted-on-navy);margin:0 0 10px;}
  .aw-connector{display:flex;align-items:center;justify-content:space-between;font-size:12px;padding:5px 0;color:var(--cream-text);}
  .status-dot{width:6px;height:6px;border-radius:50%;display:inline-block;margin-right:7px;background:var(--gold);}
  .aw-chat{display:flex;flex-direction:column;gap:10px;text-align:left;}
  .aw-chat>*{opacity:0;transform:translateY(8px);transition:opacity .5s ease, transform .5s ease;}
  .aw-chat.in>*{opacity:1;transform:translateY(0);}
  .aw-chat.in>*:nth-child(1){transition-delay:.05s;}
  .aw-chat.in>*:nth-child(2){transition-delay:.35s;}
  .aw-chat.in>*:nth-child(3){transition-delay:.7s;}
  .aw-chat.in>*:nth-child(4){transition-delay:1s;}
  .mock-bubble{border-radius:10px;padding:9px 12px;font-size:12.5px;max-width:82%;}
  .mock-bubble.user{align-self:flex-end;background:var(--navy-3);color:var(--cream-text);}
  .mock-bubble.atlas{align-self:flex-start;background:rgba(244,241,232,.06);border:1px solid var(--border-navy);color:var(--cream-text);}
  .toolcard{border-left:3px solid var(--gold);background:rgba(199,147,80,.07);border-radius:0 8px 8px 0;padding:8px 10px;font-family:var(--mono);font-size:11px;color:var(--muted-on-navy);align-self:flex-start;max-width:82%;}
  .toolcard b{color:var(--gold-2);}
  .aw-cmdbar{margin-top:14px;border:1px solid var(--border-navy);border-radius:8px;padding:10px 12px;font-size:12px;color:var(--muted-on-navy);display:flex;justify-content:space-between;align-items:center;background:rgba(0,0,0,.18);}
  .aw-cmdbar kbd{font-family:var(--mono);font-size:10px;border:1px solid var(--border-navy);border-radius:4px;padding:1px 5px;color:var(--cream-text);}
  .audit-line{font-family:var(--mono);font-size:10.5px;color:var(--muted-on-navy);padding:4px 0;border-bottom:1px solid var(--border-navy);}
  .audit-line b{color:var(--gold-2);}

  .trust-strip-wrap{position:relative;z-index:2;padding:44px 0 76px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);}
  .trust-strip{display:flex;gap:48px;width:max-content;font-family:var(--mono);font-size:12px;color:var(--muted-on-navy);letter-spacing:.06em;text-transform:uppercase;animation:marquee 26s linear infinite;}
  .trust-strip span{white-space:nowrap;}
  @keyframes marquee{0%{transform:translateX(0);}100%{transform:translateX(-50%);}}

  /* ===== "How Atlas helps" ===== */
  .narrative{padding:20px 0;}
  .narrative-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:90px 0;border-top:1px solid var(--border);position:relative;}
  .narrative-row:first-child{border-top:none;}
  .narrative-row.reverse .n-text{order:2;}
  .narrative-row.reverse .n-visual{order:1;}
  .n-eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--gold);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
  .n-eyebrow::before{content:"";width:16px;height:1px;background:var(--gold-line);}
  .n-text h3{font-family:var(--display);font-size:31px;color:var(--navy);margin:0 0 14px;line-height:1.18;font-weight:600;letter-spacing:-.01em;}
  .n-text p{font-size:15.5px;color:var(--muted);line-height:1.65;margin:0;max-width:42ch;}
  .n-visual{border-radius:16px;padding:0;overflow:hidden;transition:transform .35s ease, box-shadow .35s ease;}
  .n-visual:hover{transform:translateY(-4px);}
  .n-visual.light{background:var(--panel);border:1px solid var(--border);padding:16px;box-shadow:0 20px 40px -28px rgba(18,35,61,.25);}
  .n-visual.dark{background:var(--deep);border:1px solid var(--border-navy);padding:22px;color:var(--cream-text);box-shadow:0 20px 40px -24px rgba(10,23,48,.5);}
  .vault-graph-img{border-radius:10px;overflow:hidden;background:#fff;position:relative;}
  .vault-graph-img img{animation:floaty 7s ease-in-out infinite;}
  .vault-graph-caption{font-family:var(--mono);font-size:11px;color:var(--muted);text-align:center;padding-top:12px;letter-spacing:.03em;}
  .channel-row{display:flex;gap:12px;justify-content:center;}
  .channel-pill{flex:1;border:1px solid var(--border);border-radius:12px;padding:20px 10px;text-align:center;background:var(--panel);transition:transform .25s ease, box-shadow .25s ease;}
  .channel-pill:hover{transform:translateY(-4px);box-shadow:0 16px 28px -18px rgba(18,35,61,.3);}
  .channel-pill .icon-badge{margin:0 auto 10px;}
  .channel-pill span.lbl{font-size:12.5px;color:var(--muted);}

  /* ===== Feature grid ===== */
  .section{padding:90px 0;}
  .section-head{text-align:center;margin-bottom:44px;}
  .section-head .eyebrow-pill{margin-bottom:18px;}
  .section-head h2{font-family:var(--display);font-size:35px;color:var(--navy);margin:0 0 10px;letter-spacing:-.01em;font-weight:600;}
  .section-head p{color:var(--muted);font-size:15.5px;margin:0;}
  .glow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .glow-card{border-radius:14px;border:1px solid var(--border);padding:26px 22px;min-height:190px;background:var(--panel);transition:transform .1s ease, box-shadow .3s ease, border-color .3s ease;transform-style:preserve-3d;}
  .glow-card:hover{box-shadow:0 24px 40px -24px rgba(18,35,61,.32);border-color:var(--gold-line);}
  .glow-card .icon-badge{margin-bottom:16px;}
  .glow-card h4{font-family:var(--display);color:var(--navy);font-size:16.5px;margin:0 0 8px;font-weight:600;}
  .glow-card p{color:var(--muted);font-size:13.5px;margin:0 0 12px;line-height:1.55;}
  .glow-card a{font-size:12.5px;color:var(--navy);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
  .glow-card a:hover{color:var(--gold);}

  /* ===== Fact band ===== */
  .fact-band{background:var(--deep);padding:64px 0;position:relative;overflow:hidden;}
  .facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center;position:relative;z-index:1;}
  .fact .num{font-family:var(--display);font-size:40px;color:var(--cream-text);font-weight:600;letter-spacing:-.01em;}
  .fact .num .accent{color:var(--gold-2);}
  .fact .lbl{font-size:13px;color:var(--muted-on-navy);margin-top:8px;line-height:1.5;max-width:26ch;margin-left:auto;margin-right:auto;}

  /* ===== Preview teaser (dark example panel) ===== */
  .teaser-panel{background:var(--deep);border:1px solid var(--border-navy);border-radius:16px;overflow:hidden;max-width:980px;margin:0 auto;color:var(--cream-text);transition:transform .35s ease, box-shadow .35s ease;box-shadow:0 30px 60px -30px rgba(18,35,61,.45);}
  .teaser-panel:hover{transform:translateY(-4px);}
  .honesty-banner{display:flex;align-items:center;gap:10px;padding:11px 18px;background:rgba(0,0,0,.2);border-left:3px solid var(--gold);font-family:var(--mono);font-size:12px;color:var(--muted-on-navy);}
  .teaser-body{display:grid;grid-template-columns:180px 1fr 220px;min-height:260px;}
  .teaser-col{padding:16px;border-right:1px solid var(--border-navy);text-align:left;}
  .teaser-col:last-child{border-right:none;}
  .teaser-col h5{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted-on-navy);margin:0 0 12px;font-family:var(--mono);}
  .chip-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}
  .chip{border:1px solid var(--border-navy);border-radius:999px;padding:6px 12px;font-size:12px;color:var(--muted-on-navy);transition:background-color .2s ease, color .2s ease;}
  .chip:hover{background:rgba(244,241,232,.08);color:var(--cream-text);}
  .mock-input{border:1px solid var(--border-navy);border-radius:6px;padding:10px 12px;display:flex;justify-content:space-between;align-items:center;color:var(--muted-on-navy);font-size:13px;background:rgba(0,0,0,.18);}
  .teaser-foot{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-top:1px solid var(--border-navy);font-size:13px;color:var(--muted-on-navy);}

  /* ===== FAQ ===== */
  .faq-highlight{max-width:760px;margin:0 auto 32px;border:1px solid var(--gold-line);background:var(--gold-soft);border-radius:10px;padding:16px 18px;display:flex;justify-content:space-between;align-items:center;font-size:14px;flex-wrap:wrap;gap:8px;}
  .faq-highlight a{color:var(--navy);font-weight:700;}
  .faq-highlight a:hover{color:var(--gold);}
  .faq-list{max-width:760px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--border);padding:18px 0;cursor:pointer;}
  .faq-q{display:flex;justify-content:space-between;align-items:center;font-size:15px;color:var(--navy);font-family:var(--display);font-weight:500;}
  .faq-q .plus{color:var(--muted);font-family:var(--mono);transition:transform .25s ease;}
  .faq-item.open .faq-q .plus{transform:rotate(45deg);color:var(--gold);}
  .faq-a{font-size:13.5px;color:var(--muted);margin-top:0;line-height:1.6;max-width:60ch;max-height:0;overflow:hidden;transition:max-height .3s ease, margin-top .3s ease;}
  .faq-item.open .faq-a{max-height:200px;margin-top:10px;}

  /* ===== Final CTA (dark stage bookend) ===== */
  .cta-final-wrap{padding:90px 0;}
  .cta-final{position:relative;text-align:center;padding:88px 24px;border-radius:28px;background:radial-gradient(900px 420px at 50% 0%, var(--navy-2), var(--deep) 65%);overflow:hidden;}
  .cta-final canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.4;}
  .cta-final-inner{position:relative;z-index:1;}
  .cta-final-orb{width:46px;height:46px;margin:0 auto 24px;filter:brightness(0) invert(1);}
  .cta-final h2{font-family:var(--display);font-size:38px;color:var(--cream-text);margin:0 0 28px;max-width:20ch;margin-left:auto;margin-right:auto;letter-spacing:-.01em;font-weight:600;}
  .cta-final .btns{display:flex;gap:14px;justify-content:center;}

  /* ===== Footer ===== */
  footer{padding:64px 0 32px;border-top:1px solid var(--border);}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
  .foot-brand p{color:var(--muted);font-size:13px;margin:14px 0 0;max-width:30ch;line-height:1.6;}
  .foot-col h5{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 14px;}
  .foot-col a{display:block;font-size:13.5px;color:var(--ink);margin-bottom:10px;}
  .foot-col a:hover{color:var(--gold);}
  .foot-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
  .foot-bottom .fnote{font-family:var(--mono);font-size:11.5px;color:var(--muted);}
  .status-pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);}
  .status-pill .dot{width:6px;height:6px;border-radius:50%;background:#4CAF6D;}

  @media (max-width:900px){
    h1.headline{font-size:40px;}
    .narrative-row{grid-template-columns:1fr;gap:32px;padding:56px 0;}
    .narrative-row.reverse .n-text,.narrative-row.reverse .n-visual{order:0;}
    .glow-grid{grid-template-columns:1fr 1fr;}
    .facts{grid-template-columns:1fr;gap:36px;}
    .foot-grid{grid-template-columns:1fr 1fr;}
    .app-window-body{grid-template-columns:1fr;}
    .aw-col{border-right:none;border-bottom:1px solid var(--border-navy);}
    nav.mainnav{display:none;}
    .hamburger{display:flex;}
    .teaser-body{grid-template-columns:1fr;}
    .cta-final h2{font-size:28px;}
  }
/* --- performance layer (same visuals, cheaper paint) --- */
html { scroll-behavior: auto; }
.magnetic { }
section, .narrative-row, .section, .cta-final-wrap, .fact-band { content-visibility: auto; contain-intrinsic-size: auto 500px; }
.hero-stage, .cta-final, .app-window, header { contain: layout style; }
.hero-stage canvas, .cta-final canvas { contain: strict; pointer-events: none; }
.vault-graph-img img { animation: floaty 7s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) {
  .trust-strip { animation: none; }
  .hero-logo-wrap::before, .hero-logo-wrap img { animation: none; }
}