:root{
    /* matches the app: stone neutrals, sage + emerald accents */
    --paper:#F8F7F4;
    --ink:#1C1917;
    --ink-soft:#57534E;
    --leaf:#064E3B;
    --lime:#4A8F58;
    --mist:#EEF7F0;
    --line:#E7E5E4;
    --card:rgba(255,255,255,.78);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 "Outfit",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
  a{color:inherit}
  a:focus-visible,button:focus-visible{outline:3px solid #4A8F58;outline-offset:3px;border-radius:6px}
  .wrap{max-width:1120px;margin:0 auto;padding:0 20px}
  h1,h2,h3{font-family:"Playfair Display",Georgia,serif;font-weight:600;line-height:1.08;margin:0;letter-spacing:-.01em}
  h3{font-family:"Outfit",sans-serif;font-weight:600;letter-spacing:0}

  /* header */
  header{padding:16px 0;position:sticky;top:0;z-index:10;background:rgba(246,245,239,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(231,229,228,.8)}
  .page-bg{background:radial-gradient(circle at top left,rgba(238,247,240,.95),transparent 34rem),radial-gradient(circle at 85% 18%,rgba(244,244,245,.9),transparent 28rem),linear-gradient(135deg,#FAFAF9 0%,#F4F4F2 48%,#EEF4EF 100%)}
  .bar{display:flex;align-items:center;justify-content:space-between;gap:16px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:19px;text-decoration:none}
  .brand img{width:38px;height:38px;border-radius:12px;object-fit:cover;border:1px solid var(--line)}
  nav{display:flex;gap:22px;align-items:center;font-size:15px}
  nav a{text-decoration:none;color:var(--ink-soft)}
  nav a:hover{color:var(--ink)}
  .btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;font-weight:600;padding:13px 22px;border-radius:16px;font-size:15px}
  .btn:hover{background:#022C22}
  .btn.ghost{background:rgba(255,255,255,.7);color:var(--ink);border:1px solid var(--line)}
  .btn.ghost:hover{background:#fff;border-color:#d6d3d1}
  @media (max-width:720px){nav .hide-sm{display:none}}

  /* hero */
  .hero{padding-top:48px;padding-bottom:72px;display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
  .hero h1{font-size:clamp(42px,6.4vw,78px);font-weight:600}
  .hero p.lede{font-size:20px;color:var(--ink-soft);max-width:30em;margin:22px 0 30px}
  .ctas{display:flex;gap:12px;flex-wrap:wrap}
  @media (max-width:900px){.hero{grid-template-columns:1fr;gap:40px;padding-top:24px}}
  .closing h2{font-size:clamp(30px,4.4vw,48px);font-weight:700;margin-bottom:14px}
  .mail,footer a{overflow-wrap:anywhere}
  @media (max-width:480px){.closing{padding:40px 22px}}

  /* fan-out diagram: the one memorable element */
  .fan{position:relative;display:grid;grid-template-columns:150px 1fr;gap:0;align-items:center}
  .source{background:var(--leaf);color:#fff;border-radius:24px;box-shadow:0 24px 70px rgba(6,78,59,.18);padding:18px 16px;aspect-ratio:9/13;display:flex;flex-direction:column;justify-content:space-between;position:relative;z-index:2}
  .source .play{width:44px;height:44px;border-radius:50%;background:#B7DABE;display:grid;place-items:center}
  .source .play::after{content:"";border-left:14px solid var(--ink);border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:4px}
  .source small{display:block;color:#B7DABE;font-size:13px}
  .source strong{font-size:15px;font-weight:600}
  .outs{position:relative;padding-left:56px;display:flex;flex-direction:column;gap:10px}
  .outs svg.wires{position:absolute;left:0;top:0;width:56px;height:100%;overflow:visible}
  .out{background:var(--card);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 10px 30px rgba(41,37,36,.06);border:1px solid rgba(214,211,209,.75);border-radius:16px;padding:10px 14px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:15px}
  .out b{font-weight:600}
  .out span{color:var(--ink-soft);font-size:13px;white-space:nowrap}
  .out .score{font-family:"Playfair Display",serif;font-weight:600;color:var(--leaf);font-size:20px}
  @media (prefers-reduced-motion:no-preference){
    .out{opacity:0;transform:translateX(-8px);animation:arrive .5s ease forwards}
    .out:nth-child(2){animation-delay:.15s}.out:nth-child(3){animation-delay:.3s}
    .out:nth-child(4){animation-delay:.45s}.out:nth-child(5){animation-delay:.6s}.out:nth-child(6){animation-delay:.75s}
    @keyframes arrive{to{opacity:1;transform:none}}
  }
  @media (max-width:480px){.fan{grid-template-columns:110px 1fr}.outs{padding-left:36px}.outs svg.wires{width:36px}.out span{display:none}}

  /* sections */
  section{padding:80px 0;border-top:1px solid var(--line)}
  @media (max-width:760px){.modules{padding:4px 20px}.mod:nth-last-child(2){border-bottom:1px solid var(--line)}}
  section h2{font-size:clamp(32px,4.4vw,52px);font-weight:600;max-width:16em}
  section .intro{color:var(--ink-soft);max-width:36em;margin:16px 0 0}

  .steps{list-style:none;padding:0;margin:44px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:32px;counter-reset:s}
  .steps li{counter-increment:s}
  .steps li::before{content:counter(s);font-family:"Playfair Display",serif;font-weight:500;font-style:italic;font-size:56px;color:var(--lime);display:block;line-height:1;margin-bottom:12px}
  .steps h3{font-size:22px;margin-bottom:8px}
  .steps p{margin:0;color:var(--ink-soft)}
  @media (max-width:800px){.steps{grid-template-columns:1fr}}

  .modules{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;background:rgba(255,255,255,.78);border:1px solid rgba(214,211,209,.75);border-radius:28px;box-shadow:0 24px 70px rgba(41,37,36,.08);padding:8px 28px}
  .mod{padding:26px 24px 26px 0;border-bottom:1px solid var(--line)}
  .mod:nth-child(odd){border-right:1px solid var(--line)}
  .mod:nth-last-child(-n+2){border-bottom:0}
  .mod:nth-child(even){padding-left:24px}
  .mod h3{font-size:24px;margin-bottom:6px}
  .mod p{margin:0;color:var(--ink-soft);max-width:30em}
  @media (max-width:760px){.modules{grid-template-columns:1fr}.mod:nth-child(odd){border-right:0}.mod:nth-child(even){padding-left:0}}

  .who{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
  .who ul{margin:0;padding:0;list-style:none}
  .who li{padding:14px 0;border-bottom:1px solid var(--line);font-size:18px}
  .who li:first-child{border-top:1px solid var(--line)}
  @media (max-width:800px){.who{grid-template-columns:1fr}}

  .closing{background:var(--leaf);color:#fff;border-radius:32px;box-shadow:0 24px 80px rgba(6,78,59,.2);padding:56px 40px;margin:0 0 72px}
  .closing h2{color:#fff}
  .closing p{color:#D9ECDD;max-width:34em}
  .closing .btn{background:#fff;color:var(--leaf)}
  .closing .btn:hover{background:#EEF7F0}
  .closing a.mail{color:#fff}

  footer{padding:28px 0 40px;color:var(--ink-soft);font-size:14px}
  footer .bar{flex-wrap:wrap}

  /* legal + small pages */
  .doc{padding-top:40px;padding-bottom:80px;max-width:760px}
  .doc h1{font-size:clamp(36px,5vw,56px);font-weight:600;margin-bottom:8px}
  .doc .updated{color:var(--ink-soft);margin:0 0 32px}
  .doc h2{font-size:26px;font-weight:600;margin:36px 0 10px}
  .doc p,.doc li{color:var(--ink-soft)}
  .doc ul{padding-left:20px}
  .doc .note{border-left:3px solid #8DC096;padding:4px 0 4px 16px;margin-top:40px}
  .center404{min-height:60vh;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:20px;padding-top:40px;padding-bottom:40px}
  .center404 h1{font-size:clamp(44px,7vw,80px);font-weight:600}
  footer nav{gap:18px}
  footer .links{display:flex;gap:18px;flex-wrap:wrap}

  .btn{white-space:nowrap}
  @media (max-width:420px){.brand{font-size:17px}.brand img{width:32px;height:32px}nav .btn{padding:10px 14px;font-size:14px}}

  /* sub-pages */
  .pagehead{padding-top:48px;padding-bottom:56px}
  .pagehead h1{font-size:clamp(40px,6vw,68px);font-weight:600;max-width:14em}
  .pagehead .lede{font-size:20px;color:var(--ink-soft);max-width:32em;margin:20px 0 28px}
  .crumbs{margin:0 0 18px;font-size:14px;color:var(--ink-soft)}
  .crumbs a{text-decoration:none}.crumbs a:hover{color:var(--ink)}
  .tip{margin-top:32px;border-left:3px solid #8DC096;padding:4px 0 4px 16px;color:var(--ink-soft);max-width:36em}
  .chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
  .chips a{background:rgba(255,255,255,.78);border:1px solid var(--line);border-radius:999px;padding:8px 18px;text-decoration:none;font-size:15px;font-weight:500}
  .chips a:hover{background:#fff;border-color:#d6d3d1}
  a.inl,.intro a{color:var(--leaf);text-underline-offset:3px}
  .modules.linked a.mod{text-decoration:none;color:inherit;display:block}
  .modules.linked a.mod:hover h3{color:var(--lime)}
  .mod .more{display:inline-block;margin-top:10px;font-size:14px;font-weight:600;color:var(--leaf)}
  @media (max-width:760px){.pagehead{padding-top:28px}}