:root {
  --ink: #0b1220; --ink-2: #131c30; --paper: #ffffff; --mist: #f3f6fa; --line: #dde4ee;
  --text: #1b2433; --muted: #5b6678;
  --cut: #e6007e; --dim: #009fe3; --seal: #f08a00;
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--text); background: var(--paper); line-height: 1.55; -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; }
a { color: inherit; }
.wrap { width: min(1160px, 100% - 40px); margin-inline: auto; }
.eyebrow { font: 600 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 10px; font-weight: 650; text-decoration: none; border: 1.5px solid transparent; cursor: pointer; font-size: 15px; font-family: inherit; }
.btn-primary { background: var(--cut); color: #fff; }
.btn-primary:hover { background: #c9006f; }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.08); }
.btn-dark { background: var(--ink); color: #fff; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid var(--dim); outline-offset: 2px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(11,18,32,.92); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { color: #fff; text-decoration: none; font-weight: 800; letter-spacing: -.01em; display: flex; align-items: baseline; gap: 8px; }
.brand small { font: 500 11px var(--mono); color: #8fa3c2; letter-spacing: .08em; text-transform: uppercase; }
.nav nav { display: flex; gap: 22px; margin-left: auto; }
.nav nav a { color: #b9c6dc; text-decoration: none; font-size: 14px; }
.nav nav a:hover { color: #fff; }
.nav .btn { padding: 9px 16px; font-size: 14px; }

/* hero */
.hero { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 36px 36px; mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 80%); }
.hero .wrap { position: relative; padding: 84px 0 56px; }
.hero h1 { font-size: clamp(38px, 6vw, 68px); max-width: 15ch; }
.hero h1 em { font-style: normal; color: var(--cut); }
.hero p.lead { font-size: clamp(17px, 2vw, 20px); color: #b9c6dc; max-width: 56ch; margin: 22px 0 30px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.note { font-size: 13px; color: #8fa3c2; margin-top: 14px; }
.hero-art { margin-top: 52px; background: #0f1a30; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 14px; box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.hero-art img { display: block; width: 100%; height: auto; background: #fff; border-radius: 8px; }
.hero-art figcaption { font: 12px var(--mono); color: #8fa3c2; margin-top: 10px; display: flex; gap: 18px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }

/* strip */
.strip { border-bottom: 1px solid var(--line); background: var(--mist); }
.strip .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip div { padding: 22px 18px; border-left: 1px solid var(--line); }
.strip div:first-child { border-left: 0; }
.strip b { display: block; font-size: 22px; letter-spacing: -.02em; }
.strip span { font-size: 13px; color: var(--muted); }

section { padding: 88px 0; }
.sec-head { max-width: 720px; margin-bottom: 44px; }
.sec-head h2 { font-size: clamp(28px, 4vw, 42px); margin-top: 12px; }
.sec-head p { color: var(--muted); font-size: 18px; margin: 14px 0 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: #fff; }
.card .n { font: 600 12px var(--mono); color: var(--cut); letter-spacing: .1em; }
.card h3 { font-size: 19px; margin: 10px 0 8px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.steps { counter-reset: s; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 28px; }
.step::before { counter-increment: s; content: counter(s); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--cut); font-weight: 800; margin-bottom: 18px; }
.step h3 { font-size: 20px; margin-bottom: 8px; }
.step p { margin: 0; color: #b9c6dc; font-size: 15px; }

.alt { background: var(--mist); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.rules { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.rules li { padding-left: 30px; position: relative; }
.rules li::before { content: ""; position: absolute; left: 0; top: 7px; width: 16px; height: 3px; background: var(--seal); border-radius: 2px; }
.zones { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.zones .bar { height: 120px; border: 1.5px solid var(--cut); background: #e3f0fa; position: relative; border-radius: 3px; }
.zones .bar b { position: absolute; top: 0; bottom: 0; border-left: 2px dashed var(--seal); display: grid; place-items: center; font: 600 11px var(--mono); color: var(--seal); writing-mode: vertical-rl; letter-spacing: .1em; }
.zones p { font-size: 13px; color: var(--muted); margin: 12px 0 0; }

details { border-bottom: 1px solid var(--line); padding: 18px 0; }
summary { font-weight: 650; font-size: 17px; cursor: pointer; }
details p { color: var(--muted); margin: 10px 0 0; max-width: 70ch; }

.final { background: var(--ink); color: #fff; text-align: center; }
.final h2 { font-size: clamp(28px, 4vw, 44px); }
.final p { color: #b9c6dc; margin: 14px auto 28px; max-width: 52ch; }
footer { background: #070c17; color: #8fa3c2; font-size: 14px; padding: 36px 0; }
footer .wrap { display: flex; gap: 24px; flex-wrap: wrap; justify-content: space-between; }
footer a { color: #b9c6dc; }

@media (max-width: 860px) {
  .strip .wrap { grid-template-columns: 1fr 1fr; }
  .strip div:nth-child(3) { border-left: 0; }
  .steps, .two { grid-template-columns: 1fr; }
  .nav nav { display: none; }
  .nav .btn { margin-left: auto; }
  section { padding: 60px 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---- Theme: matches Pallet Optimizer (General Sans / Satoshi, FP blue, light header) ---- */
:root {
  --ink: #1c1f59; --ink-2: #252870; --paper: #ffffff; --mist: #f0f3f7; --line: #d0d7e2;
  --text: #1a2332; --muted: #5a6577;
  --cut: #31358a; --dim: #2e86de; --seal: #b86e00;
  --radius: 0.75rem;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif; --font-display: 'General Sans', 'Helvetica Neue', sans-serif;
  --sans: var(--font-body);
}
body { background: var(--mist); }
h1, h2, h3, .brand b, summary { font-family: var(--font-display); }
.btn { border-radius: 0.5rem; font-weight: 600; }
.btn-primary { background: #31358a; } .btn-primary:hover { background: #252870; }
.btn-dark { background: #31358a; } .btn-dark:hover { background: #252870; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline-color: #2e86de; }
.nav { background: #fff; backdrop-filter: none; border-bottom: 1px solid var(--line); box-shadow: 0 1px 3px rgba(26,35,50,.06); }
.nav .wrap { height: 60px; }
.brand { color: var(--text); align-items: center; gap: 12px; }
.brand-logo { height: 30px; width: auto; display: block; }
.brand-text { display: grid; line-height: 1.15; }
.brand-text b { font-size: 17px; font-weight: 700; color: #31358a; letter-spacing: -.01em; }
.brand-text small { font: 400 12px var(--font-body); color: var(--muted); letter-spacing: 0; text-transform: none; }
.nav nav a { color: var(--muted); } .nav nav a:hover { color: #31358a; }
.nav .staff { color: var(--muted) !important; }
.eyebrow { color: #2e86de; }
.card .n, .hero h1 em { color: #31358a; }
.hero { background: linear-gradient(135deg, #1c1f59, #31358a); }
.hero h1 em { color: #9fb4ff; }
.step { background: #31358a; } .step::before { background: #fff; color: #31358a; }
.final { background: linear-gradient(135deg, #1c1f59, #31358a); }
footer { background: #1a2332; }
@media (max-width: 520px) { .brand-text small { display: none; } }

/* v0.19 logo */
.brand-logo { height: 40px; }
.brand-text { padding-left: 14px; border-left: 1px solid #d5dbe6; }
@media (max-width: 700px) { .brand-logo { height: 32px; } .brand-text { display: none; } }