:root{
  --bg:#f6f8fc;
  --paper:#ffffff;
  --ink:#071a44;
  --muted:#51627f;
  --line:#d8e2f2;
  --soft:#eef6ff;
  --soft2:#f7fbff;
  --blue:#1267c8;
  --blue2:#0a3d91;
  --green:#168b68;
  --purple:#6b4cc9;
  --orange:#c97800;
  --shadow:0 18px 46px rgba(7,26,68,.08);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:linear-gradient(180deg,#fff 0%,var(--bg) 78%);
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height:1.55;
}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,calc(100% - 36px));margin:0 auto}
header{
  position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,226,242,.85)
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0}
.brand{display:flex;flex-direction:column;gap:1px}
.brand strong{font-size:20px;letter-spacing:.01em;color:var(--ink)}
.brand span{font-size:12px;color:var(--muted)}
.menu{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.menu a{font-size:13px;font-weight:700;color:#18325f;padding:8px 11px;border-radius:999px}
.menu a:hover,.menu a.active{background:var(--soft);color:var(--blue2)}
.hero{padding:58px 0 28px}
.hero.compact{padding:42px 0 18px}
.eyebrow{font-size:13px;letter-spacing:.13em;text-transform:uppercase;font-weight:850;color:var(--blue2);margin-bottom:10px}
h1{font-size:clamp(42px,6vw,72px);letter-spacing:-.06em;line-height:.98;margin:0 0 18px;color:var(--ink)}
h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.045em;line-height:1.04;margin:0 0 14px;color:var(--ink)}
h3{font-size:22px;letter-spacing:-.025em;line-height:1.15;margin:0 0 10px;color:var(--ink)}
p{font-size:18px;color:var(--muted);margin:0 0 12px}.lead{font-size:clamp(19px,2vw,24px);max-width:890px;color:#293b5c}.tight{max-width:760px}.small-note{font-size:14px;color:#6c7891}.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.75fr);gap:30px;align-items:center}.hero-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.hero-card img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid #e4ebf6}.hero-card .caption{font-size:13px;color:#60708b;margin:12px 2px 0}.chips{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.chip{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 17px;border-radius:999px;border:1px solid #a9c5ef;background:#eaf4ff;color:#0a2d68;font-weight:850;box-shadow:0 8px 22px rgba(18,103,200,.08)}.chip.primary{background:#1267c8;color:#fff;border-color:#1267c8}.chip.secondary{background:#fff}.chip.small{font-size:14px;min-height:38px;padding:9px 13px}.chip:hover{transform:translateY(-1px)}.section{padding:28px 0}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.value-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:22px}.value{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.value strong{display:block;font-size:17px;color:var(--ink);margin-bottom:6px}.value span{font-size:15px;color:var(--muted)}.flow{display:grid;grid-template-columns:1fr auto 1.3fr auto 1fr;gap:14px;align-items:center;margin-top:20px}.flow-box{min-height:130px;border:2px solid var(--blue);border-radius:16px;background:#fff;padding:18px}.flow-box.output{border-color:var(--green);background:#f3fbf8}.flow-box h3{font-size:24px}.flow-box p{font-size:15px}.arrow{font-size:42px;color:var(--blue);font-weight:900}.arrow.green{color:var(--green)}.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0;justify-content:center}.pill{display:inline-flex;align-items:center;gap:7px;border:2px solid #bdd5f5;background:#fff;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:850;color:#18325f}.pill.blue::before,.pill.green::before,.pill.purple::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue)}.pill.green::before{background:var(--green)}.pill.purple::before{background:var(--purple)}.numbered{counter-reset:item;display:grid;gap:16px}.numbered .num-card{position:relative;padding-left:72px}.num-card:before{counter-increment:item;content:counter(item);position:absolute;left:24px;top:24px;width:34px;height:34px;border-radius:50%;background:var(--blue);color:white;display:grid;place-items:center;font-weight:900}.num-card:nth-child(2):before{background:var(--purple)}.num-card:nth-child(3):before{background:var(--green)}.num-card:nth-child(4):before{background:var(--orange)}ul.clean{margin:12px 0 0;padding-left:1.15rem;display:grid;gap:8px}ul.clean li{font-size:17px;color:#283a5c;padding-left:.15rem}ul.clean li::marker{color:var(--blue)}.callout{border:1px solid #bdd5f5;background:var(--soft);border-radius:18px;padding:18px}.callout strong{color:var(--ink)}.boundary{border-color:#f2c785;background:#fff8ec}.asset{border-color:#d4e5d8;background:#f3fbf6}.layer-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:18px}.layer{border:1px solid var(--line);background:#fff;border-radius:16px;padding:14px}.layer b{display:block;color:var(--blue2);font-size:15px;margin-bottom:4px}.layer span{font-size:14px;color:var(--muted)}.brief-preview{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)}.brief-preview img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid #e4ebf6}.download-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.quote{font-size:22px;color:var(--ink);font-weight:850;line-height:1.3}.footer{padding:42px 0 56px}.footer .container{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.footer p{font-size:14px;margin:0;color:#687792}.contact-email{font-weight:900;color:var(--blue2)}.split-line{height:1px;background:var(--line);margin:20px 0}.safe-list{display:grid;gap:10px;margin-top:16px}.safe-list div{border:1px solid var(--line);background:#fff;border-radius:16px;padding:14px 16px;font-size:16px;color:#283a5c}.table-like{display:grid;gap:10px;margin-top:18px}.table-like div{display:flex;gap:12px;justify-content:space-between;border:1px solid var(--line);background:#fff;border-radius:15px;padding:13px 15px}.table-like strong{color:var(--ink)}.table-like span{color:var(--muted)}
@media(max-width:900px){.hero-grid,.grid.two,.grid.three,.value-grid,.layer-list{grid-template-columns:1fr}.flow{grid-template-columns:1fr}.arrow{transform:rotate(90deg);text-align:center}.hero{padding-top:38px}h1{font-size:42px}.menu{justify-content:flex-start}.nav{align-items:flex-start;flex-direction:column}.card{padding:20px}.num-card:before{left:18px;top:20px}.numbered .num-card{padding-left:64px}.footer .container{display:block}.footer p+p{margin-top:8px}}
@media(max-width:520px){.container{width:min(100% - 24px,1120px)}h1{font-size:36px}.lead{font-size:18px}p{font-size:16px}.chip{width:100%}.flow-box{min-height:auto}.hero-card{padding:10px}}


/* v162 step-through demo */
.demo-callout{border-color:rgba(18,103,200,.25);background:linear-gradient(135deg,#ffffff 0%,#eef6ff 100%)}
.demo-shell{display:grid;grid-template-columns:280px 1fr;gap:18px;align-items:stretch}
.demo-steps{display:flex;flex-direction:column;gap:10px}
.demo-step{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:18px;padding:14px 16px;text-align:left;font:inherit;cursor:pointer;display:flex;align-items:center;gap:12px;box-shadow:0 10px 26px rgba(7,26,68,.04)}
.demo-step b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:999px;background:var(--soft);color:var(--blue2);font-size:14px}
.demo-step span{font-weight:800}
.demo-step.active{border-color:rgba(18,103,200,.55);background:#eef6ff}
.demo-step.active b{background:var(--blue);color:#fff}
.demo-panel{min-height:520px;position:relative;overflow:hidden}
.demo-progress{height:8px;background:#edf2fb;border-radius:999px;overflow:hidden;margin-bottom:20px}
.demo-progress span{display:block;height:100%;width:20%;background:linear-gradient(90deg,var(--blue),var(--green));border-radius:999px;transition:width .25s ease}
.demo-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:12px;align-items:center;margin:24px 0}
.demo-box{min-height:96px;border:1px solid var(--line);background:#fff;border-radius:18px;display:grid;place-items:center;text-align:center;padding:14px;font-weight:850;color:var(--muted);transition:.2s ease}
.demo-box.current{border-color:rgba(22,139,104,.65);background:#ecf8f3;color:var(--ink);box-shadow:0 18px 44px rgba(22,139,104,.12)}
.demo-arrow{font-size:28px;color:var(--blue2);font-weight:900}
.demo-example{border-left:5px solid var(--blue);background:#f7fbff;border-radius:14px;padding:16px 18px;color:#293b5c;font-weight:750;margin:18px 0}
.demo-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}
.demo-points div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:13px 14px;color:var(--muted);font-size:16px}
.demo-controls{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}
.demo-controls button:disabled{opacity:.4;cursor:not-allowed}
@media(max-width:900px){.demo-shell{grid-template-columns:1fr}.demo-steps{display:grid;grid-template-columns:1fr 1fr}.demo-flow{grid-template-columns:1fr}.demo-arrow{transform:rotate(90deg);text-align:center}.demo-points{grid-template-columns:1fr}}
@media(max-width:520px){.demo-steps{grid-template-columns:1fr}.demo-panel{min-height:auto}}