/* Layout: SaaS-marketing skeleton (hero mocks → product cards → live portal demo → tabs → stats → proof → FAQ),
   rendered as a physics lab bench: interference-fringe hero, mono readouts, "observed" flashes on every number. */
:root {
  --bg: #f2f4f8;
  --surface: #ffffff;
  --surface-2: #e8ecf4;
  --ink: #0d1726;
  --ink-2: #4a5872;
  --line: #d4dbe8;
  --accent: #3047ff;      /* Cherenkov blue: superposition */
  --accent-ink: #ffffff;
  --collapse: #e39a00;    /* amber: the moment of observation */
  --good: #13854f;
  --bad: #c2321f;
  --warn: #9a6a00;
  --band: #0d1726; --band-ink: #f2f4f8;
  --fringe-a: 48, 71, 255;
  --fringe-b: 227, 154, 0;
  --shadow: 0 1px 2px rgba(13,23,38,.06), 0 12px 32px -12px rgba(13,23,38,.22);
  --f-display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --f-body: "Schibsted Grotesk", "Helvetica Neue", Arial, system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0f1a; --surface: #111a2b; --surface-2: #17223a; --ink: #e7ecf7; --ink-2: #9aa8c3; --line: #25324d;
    --accent: #7b8cff; --accent-ink: #0a0f1a; --collapse: #ffc145; --good: #4fd394; --bad: #ff7a66; --warn: #ffc145;
    --band: #17223a; --band-ink: #e7ecf7;
    --fringe-a: 123, 140, 255; --fringe-b: 255, 193, 69;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 16px 40px -16px rgba(0,0,0,.7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a0f1a; --surface: #111a2b; --surface-2: #17223a; --ink: #e7ecf7; --ink-2: #9aa8c3; --line: #25324d;
  --accent: #7b8cff; --accent-ink: #0a0f1a; --collapse: #ffc145; --good: #4fd394; --bad: #ff7a66; --warn: #ffc145;
  --band: #17223a; --band-ink: #e7ecf7;
  --fringe-a: 123, 140, 255; --fringe-b: 255, 193, 69;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 16px 40px -16px rgba(0,0,0,.7);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.55 var(--f-body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--bg); }
h1, h2, h3 { font-family: var(--f-display); font-weight: 800; letter-spacing: -0.025em; line-height: 1.04; margin: 0; text-wrap: balance; }
h2 { font-size: clamp(2rem, 4.4vw, 3.2rem); }
h3 { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.01em; line-height: 1.2; }
p { margin: 0; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.wrap { max-width: 1180px; margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
.eyebrow { font: 600 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--accent); }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 62ch; }
section { padding-block: clamp(64px, 9vw, 120px); }
.section-head { display: grid; gap: 16px; margin-bottom: 48px; max-width: 760px; }

/* observation flash: any value that just collapsed */
.q { transition: color .4s; }
.q.collapsed { animation: collapse .7s ease-out; }
@keyframes collapse {
  0% { color: var(--collapse); text-shadow: 0 0 12px var(--collapse); filter: blur(1.5px); }
  60% { filter: blur(0); }
  100% { text-shadow: none; }
}

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; border: 1px solid transparent; font-weight: 600; text-decoration: none; cursor: pointer; transition: transform .15s, background .15s, box-shadow .15s; }
.btn:active { transform: translateY(1px) scale(.98); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 25%, transparent); }
.btn-ghost { border-color: var(--line); background: var(--surface); }
.btn-ghost:hover { border-color: var(--ink-2); }
.btn small { font: 500 11px var(--f-mono); opacity: .75; }

/* ---------- nav ---------- */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 60px; }
.logo { white-space: nowrap; display: flex; align-items: center; gap: 10px; font: 800 18px var(--f-display); letter-spacing: -0.02em; text-decoration: none; }
.logo svg { width: 26px; height: 26px; }
.nav-spacer { flex: 1; }
.obs-chip { display: inline-flex; align-items: center; gap: 8px; font: 500 12px var(--f-mono); padding: 6px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); white-space: nowrap; }
.obs-chip i { width: 8px; height: 8px; border-radius: 50%; background: var(--collapse); box-shadow: 0 0 0 0 var(--collapse); }
.obs-chip.ping i { animation: ping .8s ease-out; }
@keyframes ping { from { box-shadow: 0 0 0 0 var(--collapse); } to { box-shadow: 0 0 0 10px transparent; } }
/* nav styles live in the shared chrome block below */

/* ---------- hero ---------- */
.hero { position: relative; padding-block: 72px 96px; overflow: hidden; }
#fringes { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none; }
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 5.2rem); }
.hero h1 em { font-style: normal; color: var(--accent); position: relative; }
.hero-copy { display: grid; gap: 24px; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-note { font: 400 12px/1.5 var(--f-mono); color: var(--ink-2); }
.mocks { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mock { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 16px; display: grid; gap: 10px; min-width: 0; }
.mock-label { display: flex; justify-content: space-between; align-items: center; font: 500 11px var(--f-mono); color: var(--ink-2); text-transform: uppercase; letter-spacing: .08em; }
.mock-label .psi { color: var(--collapse); text-transform: none; }
.tiers { grid-column: 1 / -1; }
.tier-row { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 10px; }
.tier { border: 1px solid var(--line); border-radius: 10px; padding: 12px; display: grid; gap: 4px; }
.tier.pop { border-color: var(--accent); }
.tier b { font: 600 13px var(--f-body); }
.tier .price { font: 800 22px var(--f-display); letter-spacing: -0.02em; }
.tier .price small { font: 400 11px var(--f-mono); color: var(--ink-2); }
.tier .feat { font-size: 12px; color: var(--ink-2); }
.meter-bar { height: 8px; border-radius: 4px; background: var(--surface-2); overflow: hidden; position: relative; }
.meter-bar span { position: absolute; inset: 0 auto 0 0; background: linear-gradient(90deg, var(--accent), var(--collapse)); border-radius: 4px; transition: width .6s cubic-bezier(.2,.8,.2,1); }
.kv { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; }
.kv span:first-child { color: var(--ink-2); }
.invoice-total { font: 800 30px var(--f-display); letter-spacing: -0.02em; }
.pay-btn { width: 100%; justify-content: center; }
@media (max-width: 920px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 480px) { .mocks { grid-template-columns: 1fr; } .tier-row { grid-template-columns: 1fr; } }

/* ---------- logos ---------- */
.logos { padding-block: 28px; border-block: 1px solid var(--line); }
.logos .wrap { display: flex; flex-wrap: wrap; gap: 14px 40px; justify-content: space-between; align-items: center; font: 700 15px var(--f-display); color: var(--ink-2); letter-spacing: -0.01em; }
.logos span { display: inline-flex; gap: 8px; align-items: center; white-space: nowrap; }
.logos svg { width: 18px; height: 18px; }

/* ---------- principle ---------- */
.principle .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.equation { font: 400 clamp(1.1rem, 2.2vw, 1.5rem)/1.6 var(--f-mono); background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 28px; display: grid; gap: 14px; }
.equation .big { font-size: 1.6em; color: var(--accent); }
.equation p { font: 400 14px/1.6 var(--f-body); color: var(--ink-2); }
@media (max-width: 860px) { .principle .wrap { grid-template-columns: minmax(0, 1fr); } }

/* ---------- product cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: grid; gap: 14px; align-content: start; }
.card p { color: var(--ink-2); font-size: 15px; }
.card .mock { box-shadow: none; background: var(--surface-2); border-color: transparent; }
.card a.more { font-weight: 600; color: var(--accent); text-decoration: none; font-size: 14px; }
/* uneven grid: the flagship product gets the tall column */
.cards { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
.cards .card:first-child { grid-row: span 2; display: flex; flex-direction: column; gap: 18px; padding: 32px; }
.cards .card:first-child .mock { margin-top: auto; }
.cards .card:first-child h3 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); line-height: 1.1; max-width: 18ch; }
.cards .card:first-child .mock { padding: 22px; font-size: 1.05rem; }
@media (max-width: 900px) { .cards { grid-template-columns: minmax(0, 1fr); } .cards .card:first-child { grid-row: auto; } }

/* ---------- portal demo ---------- */
.demo { background: var(--surface-2); }
.demo-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.browser { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; position: relative; }
.chrome { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.dots { display: flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.reload { border: 0; background: transparent; width: 28px; height: 28px; border-radius: 6px; display: grid; place-items: center; cursor: pointer; color: var(--ink-2); }
.reload:hover { background: var(--line); color: var(--ink); }
.reload svg { width: 16px; height: 16px; transition: transform .5s; }
.reload.spin svg { transform: rotate(360deg); }
.url { flex: 1; min-width: 0; font: 400 12px var(--f-mono); color: var(--ink-2); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 5px 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.portal { padding: 22px; display: grid; gap: 18px; position: relative; transition: filter .25s, opacity .25s; }
.portal.decohering { filter: blur(3px) hue-rotate(40deg); opacity: .55; }
.portal-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.cust { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.cust-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--ink); color: var(--bg); display: grid; place-items: center; font: 800 14px var(--f-display); }
.portal-head .mono { font-size: 12px; color: var(--ink-2); }
.panes { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }
.pane { border: 1px solid var(--line); border-radius: 10px; padding: 16px; display: grid; gap: 10px; align-content: start; min-width: 0; }
.pane h4 { margin: 0; font: 600 11px var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); display: flex; justify-content: space-between; }
.plan-name { font: 800 26px/1.05 var(--f-display); letter-spacing: -0.02em; }
.plan-price { font: 600 15px var(--f-mono); }
.pane-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.mini { font: 600 12px var(--f-body); padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; }
.mini:hover { border-color: var(--ink-2); }
.mini.danger { color: var(--bad); }
.ents { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 13px; }
.ents li { display: grid; grid-template-columns: 18px minmax(0,1fr); gap: 8px; align-items: start; }
.ents .st { font: 600 13px var(--f-mono); }
.ents .st.on { color: var(--good); } .ents .st.off { color: var(--bad); } .ents .st.maybe { color: var(--warn); }
.ents small { display: block; color: var(--ink-2); font-size: 11.5px; }
.inv-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.inv-table td { padding: 7px 0; border-top: 1px solid var(--line); }
.inv-table td:last-child { text-align: right; }
.inv-table tr { cursor: pointer; }
.inv-table tr:hover td { color: var(--accent); }
.pill { display: inline-block; font: 600 10.5px var(--f-mono); padding: 2px 7px; border-radius: 999px; background: var(--surface-2); white-space: nowrap; }
.pill.good { color: var(--good); } .pill.bad { color: var(--bad); } .pill.warn { color: var(--warn); }
.toast { position: absolute; left: 50%; bottom: 16px; transform: translate(-50%, 20px); background: var(--ink); color: var(--bg); font: 500 13px var(--f-body); padding: 10px 14px; border-radius: 10px; opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s; max-width: calc(100% - 32px); text-align: center; z-index: 3; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.ghost { position: absolute; width: 22px; height: 22px; left: 0; top: 0; z-index: 4; pointer-events: none; transition: transform .9s cubic-bezier(.45,0,.2,1), opacity .3s; opacity: 0; }
.ghost.on { opacity: 1; }
.ghost svg { width: 22px; height: 22px; filter: drop-shadow(0 2px 3px rgba(0,0,0,.35)); }
.ghost .tag { position: absolute; left: 20px; top: 18px; font: 600 11px var(--f-body); padding: 3px 8px; border-radius: 6px; background: var(--collapse); color: #1a1200; white-space: nowrap; }
.ghost.click::after { content: ""; position: absolute; left: -9px; top: -9px; width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--collapse); animation: ripple .5s ease-out forwards; }
@keyframes ripple { from { transform: scale(.4); opacity: 1; } to { transform: scale(2.2); opacity: 0; } }
.side { display: grid; gap: 16px; min-width: 0; }
.caption-box { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: grid; gap: 12px; }
.caption-box .who { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.avatar { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font: 700 13px var(--f-display); color: #fff; flex: none; }
.caption-text { font-size: 15px; min-height: 3.1em; }
.demo-ctl { display: flex; gap: 8px; flex-wrap: wrap; }
.log { background: var(--ink); color: var(--bg); border-radius: 14px; padding: 16px; font: 400 12px/1.6 var(--f-mono); max-height: 300px; overflow: auto; display: grid; gap: 10px; align-content: start; }
.log-head { display: flex; justify-content: space-between; color: color-mix(in srgb, var(--bg) 60%, var(--ink)); text-transform: uppercase; letter-spacing: .1em; font-size: 10.5px; }
.log-entry { border-left: 2px solid var(--collapse); padding-left: 10px; }
.log-entry .t { color: var(--collapse); }
.log-entry .plus { color: #6fe3a5; } .log-entry .minus { color: #ff9b8a; }
@media (max-width: 960px) { .demo-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 560px) { .panes { grid-template-columns: minmax(0, 1fr); } .portal { padding: 14px; } }

/* api + receipt demos */
.duo { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 24px; margin-top: 24px; }
.term { background: #0b1220; color: #d8e1f5; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); }
.term-head { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; border-bottom: 1px solid #1f2a44; font: 500 12px var(--f-mono); color: #8a98b8; gap: 8px; }
.term-head button { font: 600 12px var(--f-mono); background: #3047ff; color: #fff; border: 0; border-radius: 6px; padding: 5px 10px; cursor: pointer; }
.term pre { margin: 0; padding: 16px; font: 400 12.5px/1.6 var(--f-mono); overflow-x: auto; min-height: 290px; }
.term .k { color: #9fb1ff; } .term .s { color: #ffd27a; } .term .n { color: #7ee2b0; } .term .c { color: #6b7896; }
.receipt { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px; display: grid; gap: 12px; align-content: start; }
.receipt .from { font: 500 12px var(--f-mono); color: var(--ink-2); }
.receipt h3 { font-size: 1.4rem; }
.receipt .amount { font: 800 40px var(--f-display); letter-spacing: -0.03em; }
@media (max-width: 860px) { .duo { grid-template-columns: minmax(0, 1fr); } }

/* ---------- feature tabs ---------- */
.tabs { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 40px; align-items: start; }
.tab-list { display: grid; gap: 4px; }
.tab { text-align: left; border: 0; background: transparent; padding: 18px 20px; border-radius: 12px; cursor: pointer; display: grid; gap: 8px; border-left: 3px solid transparent; }
.tab:hover { background: var(--surface); }
.tab[aria-selected="true"] { background: var(--surface); border-left-color: var(--accent); }
.tab .t-title { font: 600 18px var(--f-display); letter-spacing: -0.01em; }
.tab .t-body { color: var(--ink-2); font-size: 14.5px; display: none; }
.tab[aria-selected="true"] .t-body { display: block; }
.tab-stage { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; min-height: 380px; display: grid; gap: 16px; align-content: start; box-shadow: var(--shadow); }
.stage-stat { display: flex; gap: 24px; flex-wrap: wrap; }
.stage-stat div { display: grid; gap: 2px; }
.stage-stat b { font: 800 30px var(--f-display); letter-spacing: -0.02em; }
.stage-stat span { font-size: 12px; color: var(--ink-2); }
.rate-card { width: 100%; border-collapse: collapse; font-size: 14px; }
.rate-card th { text-align: left; font: 600 11px var(--f-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); padding: 8px 0; }
.rate-card td { padding: 10px 0; border-top: 1px solid var(--line); }
.rate-card td:last-child, .rate-card th:last-child { text-align: right; }
.rate-card tr:hover td { background: color-mix(in srgb, var(--collapse) 8%, transparent); }
#stageChart { width: 100%; height: 180px; display: block; }
.fx { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.fx div { border: 1px solid var(--line); border-radius: 10px; padding: 12px; display: grid; gap: 2px; }
.fx b { font: 600 18px var(--f-mono); }
.fx span { font-size: 12px; color: var(--ink-2); }
@media (max-width: 900px) { .tabs { grid-template-columns: minmax(0, 1fr); } }

/* ---------- stats ---------- */
.stats { background: var(--band); color: var(--band-ink); }
.stats .eyebrow { color: var(--collapse); }
.stats h2 { color: var(--band-ink); }
.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; margin-top: 48px; }
.stat-grid div { display: grid; gap: 8px; border-top: 1px solid color-mix(in srgb, var(--band-ink) 25%, transparent); padding-top: 18px; }
.stat-grid b { font: 800 clamp(2rem, 4vw, 3rem)/1 var(--f-display); letter-spacing: -0.03em; }
.stat-grid span { font-size: 14px; color: color-mix(in srgb, var(--band-ink) 70%, var(--band)); }
@media (max-width: 860px) { .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- case studies + analysts ---------- */
.cases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.case { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: grid; gap: 18px; align-content: space-between; }
.case blockquote { margin: 0; font: 600 19px/1.35 var(--f-display); letter-spacing: -0.01em; }
.case footer { font-size: 13px; color: var(--ink-2); display: grid; gap: 2px; }
.case footer b { color: var(--ink); }
.awards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 20px; }
.award { border: 1px dashed var(--line); border-radius: 16px; padding: 24px; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 20px; align-items: center; }
.award canvas { width: 120px; height: 120px; }
.award p { color: var(--ink-2); font-size: 14px; margin-top: 6px; }
@media (max-width: 900px) { .cases, .awards { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 420px) { .award { grid-template-columns: minmax(0, 1fr); } }

/* ---------- checklist ---------- */
.checks { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.checks h3 { font-size: 1rem; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.checks ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; font-size: 14px; color: var(--ink-2); }
.checks li::before { content: "◐ "; color: var(--accent); }
@media (max-width: 900px) { .checks { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 460px) { .checks { grid-template-columns: minmax(0, 1fr); } }

/* ---------- pricing strip ---------- */
.price-strip { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: clamp(24px, 4vw, 48px); }
.fee { font: 800 clamp(2.4rem, 5vw, 4rem)/1 var(--f-display); letter-spacing: -0.03em; cursor: crosshair; }
.fee { display: grid; gap: 12px; justify-items: start; padding: 24px; border-radius: 14px; background: var(--surface-2); }
.fee b { font: inherit; }
.fee small { display: block; font: 400 13px var(--f-mono); color: var(--ink-2); letter-spacing: 0; margin-top: 10px; }
@media (max-width: 800px) { .price-strip { grid-template-columns: minmax(0, 1fr); } }

/* ---------- faq ---------- */
.faq { max-width: 820px; display: grid; gap: 0; }
.faq details { border-top: 1px solid var(--line); padding-block: 18px; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font: 600 18px var(--f-display); letter-spacing: -0.01em; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--f-mono); color: var(--accent); }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--ink-2); margin-top: 10px; max-width: 65ch; }

/* ---------- final cta + footer ---------- */
.final { text-align: left; }
.final .box { background: var(--accent); color: var(--accent-ink); border-radius: 24px; padding: clamp(32px, 6vw, 72px); display: grid; gap: 20px; position: relative; overflow: hidden; }
.final h2 { color: var(--accent-ink); max-width: 16ch; }
.final p { max-width: 54ch; opacity: .9; }
.final .btn-primary { background: var(--accent-ink); color: var(--accent); }
.final .box { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); column-gap: 48px; align-items: center; }
.final .box > :not(.ket) { grid-column: 1; }
.final .ket { grid-column: 2; grid-row: 1 / span 3; display: grid; gap: 6px; font-size: clamp(1rem, 1.9vw, 1.45rem); line-height: 1.5; padding: 28px; border: 1px solid color-mix(in srgb, var(--accent-ink) 30%, transparent); border-radius: 18px; }
.final .ket span:not(:first-child) { padding-left: 2ch; }
.final .ket b { color: var(--accent-ink); font-weight: 700; text-decoration: underline 3px var(--collapse); text-underline-offset: 5px; }
@media (max-width: 860px) { .final .box { grid-template-columns: minmax(0, 1fr); } .final .ket { grid-column: 1; grid-row: auto; } }
.final .btn-ghost { background: transparent; border-color: color-mix(in srgb, var(--accent-ink) 50%, transparent); color: var(--accent-ink); }
footer.site { padding-block: 56px 40px; border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-2); }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr)); gap: 28px; }
.foot-grid h4 { margin: 0 0 10px; font: 600 12px var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--ink); }
.foot-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.foot-grid a { text-decoration: none; }
.foot-grid a:hover { color: var(--ink); }
.fine { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12.5px; }
@media (max-width: 860px) { .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* hero load: one orchestrated sequence. Copy settles, then each mock lands and collapses amber. */
@keyframes qb-rise { from { opacity: 0; transform: translateY(14px); } }
@keyframes qb-land { from { opacity: 0; transform: scale(.96) translateY(10px); } }
.hero-copy > * { animation: qb-rise .7s cubic-bezier(.16,1,.3,1) both; animation-delay: calc(var(--i, 0) * 70ms); }
.hero-copy > :nth-child(2) { --i: 1; } .hero-copy > :nth-child(3) { --i: 2; } .hero-copy > :nth-child(4) { --i: 3; } .hero-copy > :nth-child(5) { --i: 4; }
.mocks > .mock { animation: qb-land .8s cubic-bezier(.16,1,.3,1) both; animation-delay: calc(320ms + var(--i, 0) * 80ms); }
.mocks > .mock:nth-child(2) { --i: 1; } .mocks > .mock:nth-child(3) { --i: 2; }
.btn:active { transform: scale(.97); }
.btn { transition: transform .12s ease-out, box-shadow .2s ease-out, background-color .2s; }
@media (prefers-reduced-motion: reduce) {
  .hero-copy > *, .mocks > .mock { animation-name: qb-fade; transform: none; }
  .btn:active { transform: none; }
}
@keyframes qb-fade { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* ---------- shared chrome additions (multi-page) ---------- */
.nav .wrap { position: relative; gap: 20px; }
.nav-links { display: flex; gap: 4px; font-size: 14px; color: var(--ink-2); }
.nav-top { display: inline-flex; align-items: center; gap: 4px; padding: 8px 12px; border: 0; border-radius: 8px; background: transparent; color: var(--ink-2); font: 500 14px var(--f-body); text-decoration: none; cursor: pointer; }
.nav-top svg { width: 12px; height: 12px; transition: transform .2s; }
.nav-top:hover, .nav-top[aria-expanded="true"] { color: var(--ink); background: var(--surface-2); }
.nav-top[aria-expanded="true"] svg { transform: rotate(180deg); }
.nav-top[aria-current] { color: var(--ink); font-weight: 600; }
.nav-group { position: relative; }
.nav-menu { position: absolute; top: calc(100% + 6px); left: -8px; width: 340px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 8px; display: grid; gap: 2px; z-index: 30; }
.nav-menu::before { content: ""; position: absolute; inset: -10px 0 auto; height: 10px; }
.nav-menu a { display: grid; gap: 2px; padding: 10px 12px; border-radius: 9px; text-decoration: none; }
.nav-menu a:hover, .nav-menu a:focus-visible { background: var(--surface-2); }
.nav-menu b { font: 600 14px var(--f-body); color: var(--ink); }
.nav-menu span { font-size: 12.5px; color: var(--ink-2); }
.nav-menu a[aria-current="page"] b { color: var(--accent); }
.nav-signin { font: 500 14px var(--f-body); color: var(--ink-2); text-decoration: none; white-space: nowrap; }
.nav-signin:hover { color: var(--ink); }
.nav-cta, .nav-sales { padding: 8px 16px; font-size: 14px; white-space: nowrap; }
.nav-burger { display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 4px; }
.nav-burger span { display: block; width: 16px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform .2s, opacity .2s; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-drawer { border-top: 1px solid var(--line); background: var(--bg); max-height: calc(100dvh - 60px - env(safe-area-inset-top, 0px)); overflow-y: auto; }
.nav-drawer .wrap { display: grid; gap: 18px; padding-block: 18px 28px; height: auto; align-items: stretch; }
.drawer-group { display: grid; gap: 2px; }
.drawer-label { font: 600 11px var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); padding-bottom: 4px; }
.drawer-group a, .drawer-top { padding: 9px 0; text-decoration: none; font-size: 16px; }
.drawer-top { font: 600 17px var(--f-display); border-top: 1px solid var(--line); padding-top: 14px; }
.nav-drawer a[aria-current="page"] { color: var(--accent); font-weight: 600; }
.drawer-ctas { display: grid; gap: 10px; border-top: 1px solid var(--line); padding-top: 16px; }
.drawer-ctas .btn { justify-content: center; }
.drawer-ctas > a:first-child { text-decoration: none; padding: 6px 0; }
html.drawer-open { overflow: hidden; }
@media (max-width: 1100px) { .nav-sales { display: none; } }
@media (max-width: 960px) { .nav-links, .nav-signin { display: none; } .nav-burger { display: inline-flex; } }
@media (max-width: 560px) { .obs-word { display: none; } .nav .wrap { gap: 10px; } }
@media (max-width: 480px) { .obs-chip { display: none; } }
.qb-toast { position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); transform: translate(-50%, 20px); background: var(--ink); color: var(--bg); font: 500 14px var(--f-body); padding: 12px 16px; border-radius: 12px; opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s; max-width: calc(100% - 32px); text-align: center; z-index: 50; box-shadow: var(--shadow); }
.qb-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* page header used by inner pages */
.page-hero { padding-block: 64px 40px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.page-hero .wrap { display: grid; gap: 18px; }
.page-hero h1 { font-size: clamp(2.4rem, 5.6vw, 4.2rem); max-width: 18ch; }
.page-hero .lede { font-size: 1.2rem; }

/* long-form text (docs, legal, case studies) */
.prose { max-width: 72ch; display: grid; gap: 18px; font-size: 16.5px; }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-top: 24px; }
.prose h3 { margin-top: 12px; }
.prose p, .prose li { color: var(--ink-2); }
.prose strong { color: var(--ink); }
.prose code { font: 400 .9em var(--f-mono); background: var(--surface-2); padding: 1px 6px; border-radius: 5px; }
.prose pre { margin: 0; background: #0b1220; color: #d8e1f5; border-radius: 12px; padding: 16px; font: 400 13px/1.6 var(--f-mono); overflow-x: auto; }
.prose blockquote { margin: 0; padding: 4px 0 4px 18px; border-left: 3px solid var(--collapse); font: 600 1.25rem/1.4 var(--f-display); color: var(--ink); }
.callout { border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: 16px 18px; display: grid; gap: 6px; font-size: 15px; }
.callout b { font: 600 11px var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--collapse); }

.case a.more { color: var(--accent); font-weight: 600; text-decoration: none; margin-top: 8px; font-size: 14px; }

/* sibling pages in the developer sidebar (docs + sdk) */
.toc-siblings { list-style: none; margin: 0 0 14px; padding: 0 0 14px; display: grid; gap: 2px; border-bottom: 1px solid var(--line); }
.toc-siblings a { display: block; padding: 5px 10px; border-radius: 6px; text-decoration: none; color: var(--ink-2); font-weight: 500; }
.toc-siblings a:hover { color: var(--ink); background: var(--surface-2); }
.toc-siblings a[aria-current="page"] { color: var(--accent); background: var(--surface-2); font-weight: 600; }