/* Obsilient site v2 - one stylesheet, system fonts, no external resources.
   Theme: system preference, overridden by html[data-theme] (set by theme.js from the visitor's choice). */
:root {
  --bg: #f6f7fb; --bg-alt: #eef0f6; --fg: #0b0f19; --muted: #4c5566; --line: #dfe3ec;
  --card: rgba(255,255,255,.72); --card-line: rgba(15,23,42,.08);
  --accent: #4338ca; --accent-2: #0891b2; --accent-3: #c026d3; --on-accent: #ffffff;
  --glow-a: rgba(99,102,241,.22); --glow-b: rgba(6,182,212,.18); --glow-c: rgba(217,70,239,.12);
  --shadow: 0 1px 2px rgba(15,23,42,.06), 0 18px 48px -18px rgba(30,41,90,.28);
  --radius: 18px; --max: 72rem;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  /* the demo screens are always dark, like a video */
  --s-bg: #0a0f1d; --s-bg-2: #111a33; --s-grid: rgba(148,163,255,.10); --s-pipe: #26314f; --s-pipe-hi: #3d5bd6;
  --s-pk: #8be3ff; --s-node: #121a31; --s-node-line: #33416e; --s-node-ink: #5d6c9e;
  --s-ok: #34d399; --s-bad: #fb7185; --s-mark: #e879f9; --s-token: #fcd34d;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #07090f; --bg-alt: #0b0e17; --fg: #e9edf6; --muted: #9ba5b8; --line: #1b2131;
    --card: rgba(20,25,40,.62); --card-line: rgba(148,163,255,.10);
    --accent: #8b9cff; --accent-2: #5ee0f5; --accent-3: #f08cff; --on-accent: #07090f;
    --glow-a: rgba(99,102,241,.30); --glow-b: rgba(6,182,212,.20); --glow-c: rgba(217,70,239,.16);
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 24px 60px -20px rgba(0,0,0,.7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #07090f; --bg-alt: #0b0e17; --fg: #e9edf6; --muted: #9ba5b8; --line: #1b2131;
  --card: rgba(20,25,40,.62); --card-line: rgba(148,163,255,.10);
  --accent: #8b9cff; --accent-2: #5ee0f5; --accent-3: #f08cff; --on-accent: #07090f;
  --glow-a: rgba(99,102,241,.30); --glow-b: rgba(6,182,212,.20); --glow-c: rgba(217,70,239,.16);
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 24px 60px -20px rgba(0,0,0,.7);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; }
a { color: var(--accent); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 8px; }
h1, h2, h3 { line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(2.4rem, 6.2vw, 4.4rem); font-weight: 780; letter-spacing: -0.04em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 740; letter-spacing: -0.03em; }
h3 { font-size: 1.2rem; font-weight: 680; }
p { margin: 0 0 1em; }
.grad { background: linear-gradient(100deg, var(--accent) 10%, var(--accent-3) 55%, var(--accent-2) 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 20; }
.skip:focus { left: 16px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

/* header */
.top { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: saturate(170%) blur(14px); backdrop-filter: saturate(170%) blur(14px); }
.top .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 720; font-size: 1.1rem; }
.brand svg { width: 30px; height: 30px; color: var(--accent); flex: none; }
.nav { display: none; gap: 26px; margin-left: auto; font-size: .95rem; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--fg); }
@media (min-width: 860px) { .nav { display: flex; } }
.theme-btn { margin-left: auto; width: 40px; height: 40px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); color: var(--fg); display: inline-grid; place-items: center; cursor: pointer; }
@media (min-width: 860px) { .theme-btn { margin-left: 8px; } }
.theme-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.theme-btn .moon { display: none; fill: currentColor; stroke: none; }
:root[data-theme="dark"] .theme-btn .moon { display: block; }
:root[data-theme="dark"] .theme-btn .sun, :root[data-theme="dark"] .theme-btn .rays { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-btn .moon { display: block; }
  :root:not([data-theme="light"]) .theme-btn .sun, :root:not([data-theme="light"]) .theme-btn .rays { display: none; }
}
html:not(.js) .theme-btn { display: none; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 22px;
  border-radius: 999px; font: 650 .98rem/1 var(--sans); text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease; }
.btn-primary { color: #fff; background: linear-gradient(135deg, #4f46e5, #7c3aed 50%, #0e7490);
  box-shadow: 0 10px 30px -10px rgba(99,102,241,.7), inset 0 1px 0 rgba(255,255,255,.25); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 16px 36px -12px rgba(99,102,241,.8), inset 0 1px 0 rgba(255,255,255,.3); }
.btn-ghost { color: var(--fg); border-color: var(--line); background: var(--card); }
.btn-ghost:hover { border-color: var(--muted); }

/* sections */
section { padding: 88px 0; position: relative; }
@media (min-width: 720px) { section { padding: 120px 0; } }
.eyebrow { display: inline-block; font: 650 .78rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px; }
.lede { font-size: clamp(1.06rem, 1.9vw, 1.25rem); color: var(--muted); max-width: 44rem; }
.head { margin-bottom: 48px; }

/* hero */
.hero { padding: 56px 0 88px; overflow: hidden; isolation: isolate; }
.hero::before { content: ""; position: absolute; inset: -20% -10% auto; height: 120%; z-index: -1;
  background: radial-gradient(40% 50% at 18% 30%, var(--glow-a), transparent 70%),
              radial-gradient(35% 45% at 82% 20%, var(--glow-b), transparent 70%),
              radial-gradient(30% 40% at 60% 85%, var(--glow-c), transparent 70%); filter: blur(10px); }
@media (min-width: 720px) { .hero { padding: 88px 0 120px; } }
.hero-grid { display: grid; gap: 48px; align-items: center; }
@media (min-width: 64rem) { .hero-grid { grid-template-columns: 5fr 6fr; gap: 56px; } }
.hero h1 { max-width: 13ch; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.chips { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: .84rem; color: var(--muted); border: 1px solid var(--line); background: var(--card);
  border-radius: 999px; padding: 6px 12px; }
.lost { min-height: 60vh; }

/* the stage: a glossy dark screen */
.stage { margin: 0; min-width: 0; }
.stage-chrome { position: relative; border-radius: 22px; padding: 1px;
  background: linear-gradient(140deg, rgba(139,156,255,.7), rgba(240,140,255,.35) 40%, rgba(94,224,245,.55));
  box-shadow: var(--shadow), 0 30px 80px -30px rgba(79,70,229,.55); }
.screen, .mini { position: relative; border-radius: 21px 21px 0 0; overflow: hidden; aspect-ratio: 16 / 9;
  background: radial-gradient(120% 90% at 30% 0%, var(--s-bg-2), var(--s-bg) 60%); }
.screen::after, .mini::after { content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,.07), transparent 38%); }
.screen svg, .mini svg { display: block; width: 100%; height: 100%; }
.noscript { color: #c7cff0; padding: 24px; margin: 0; }
.phases { display: flex; align-items: center; gap: 4px; padding: 10px 14px 12px; border-radius: 0 0 21px 21px;
  background: linear-gradient(180deg, #0d1426, #0a0f1d); color: #8590b3; font: 600 .72rem/1 var(--mono);
  letter-spacing: .06em; text-transform: uppercase; flex-wrap: wrap; position: relative; }
.phases span { padding: 5px 8px; border-radius: 999px; transition: color .3s, background .3s; }
.phases span.on { color: #fff; background: rgba(139,156,255,.22); }
.phases span.on[data-phase="1"] { background: rgba(251,113,133,.25); }
.phases span.on[data-phase="2"] { background: rgba(232,121,249,.25); }
.phases span.on[data-phase="3"] { background: rgba(52,211,153,.22); }
.phases .bar { position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px; background: rgba(255,255,255,.07); border-radius: 2px; overflow: hidden; }
.phases .bar b { display: block; height: 100%; width: 100%; transform-origin: 0 50%; transform: scaleX(0);
  background: linear-gradient(90deg, #8b9cff, #f08cff, #5ee0f5); }
.stage figcaption { margin: 16px 2px 12px; color: var(--muted); min-height: 3.2em; font-size: .98rem; }
.picker { display: flex; flex-wrap: wrap; gap: 8px; }
.picker button { font: 600 .85rem/1 var(--sans); color: var(--fg); background: var(--card); border: 1px solid var(--line);
  border-radius: 999px; padding: 9px 14px; cursor: pointer; transition: border-color .2s, background .2s; }
.picker button:hover { border-color: var(--accent); }
.picker button[aria-pressed="true"] { color: #fff; border-color: transparent;
  background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.picker .play { margin-left: auto; width: 38px; padding: 0; display: inline-grid; place-items: center; min-height: 34px; }
.picker .play svg { width: 14px; height: 14px; fill: currentColor; }
.picker .play .i-play { display: none; }
.picker .play[aria-pressed="true"] { color: var(--fg); background: var(--card); border-color: var(--line); }
.picker .play[aria-pressed="true"] .i-play { display: block; }
.picker .play[aria-pressed="true"] .i-pause { display: none; }
html:not(.js) .picker, html:not(.js) .phases, html:not(.js) .ba { display: none; }
.reduced .picker .play, .reduced .phases .bar { display: none; }

/* problems */
.problems { background: linear-gradient(180deg, var(--bg), var(--bg-alt)); border-top: 1px solid var(--line); }
.prob-layout { display: grid; gap: 32px; }
@media (min-width: 64rem) { .prob-layout { grid-template-columns: 13rem 1fr; gap: 56px; } }
.rail { display: none; list-style: none; margin: 0; padding: 0; }
@media (min-width: 64rem) { .rail { display: block; position: sticky; top: 104px; align-self: start; } }
.rail a { display: flex; align-items: center; gap: 12px; padding: 9px 0; color: var(--muted); text-decoration: none; font-size: .95rem; }
.rail a .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); flex: none; transition: transform .3s, background .3s; }
.rail a.on { color: var(--fg); font-weight: 650; }
.rail a.on .dot { background: linear-gradient(135deg, var(--accent), var(--accent-3)); transform: scale(1.5); }
.prob-list { display: grid; gap: 28px; }
.prob { display: grid; gap: 20px 40px; padding: 26px; border-radius: var(--radius); background: var(--card);
  border: 1px solid var(--card-line); box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
@media (min-width: 860px) { .prob { grid-template-columns: 1fr 1.15fr; padding: 34px; align-items: center; }
  .prob .mini { grid-column: 2; grid-row: 1; } .prob .ba { grid-column: 2; grid-row: 2; } .prob-text { grid-row: 1 / span 2; } }
.prob h3 { font-size: clamp(1.3rem, 2.4vw, 1.6rem); letter-spacing: -0.02em; }
.prob p { color: var(--muted); }
.prob .out { color: var(--fg); margin: 0; padding-top: 14px; border-top: 1px solid var(--line); }
.prob .out b { display: block; font: 650 .74rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.mini { border-radius: 16px; outline-offset: 4px; box-shadow: 0 20px 50px -24px rgba(30,41,90,.6); cursor: crosshair; }
.ba { justify-self: start; display: inline-flex; padding: 4px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--bg); cursor: pointer; font: 600 .85rem/1 var(--sans); }
.ba span { padding: 8px 14px; border-radius: 999px; color: var(--muted); transition: background .25s, color .25s; }
.ba[aria-pressed="false"] span:first-child, .ba[aria-pressed="true"] span:last-child { color: #fff; background: linear-gradient(135deg, #4f46e5, #7c3aed); }

/* bands */
.band { border-top: 1px solid var(--line); }
.proven { overflow: hidden; isolation: isolate; }
.proven::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(50% 60% at 85% 10%, var(--glow-b), transparent 70%), radial-gradient(40% 50% at 10% 90%, var(--glow-a), transparent 70%); }
.fit { background: var(--bg-alt); }
.grid { display: grid; gap: 16px; }
@media (min-width: 760px) { .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.glass { background: var(--card); border: 1px solid var(--card-line); border-radius: var(--radius); box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.card { padding: 28px; }
.card p { color: var(--muted); margin: 0; }
.ico { width: 34px; height: 34px; fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 16px; }
.big { display: block; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 760; letter-spacing: -0.03em; margin-bottom: 10px;
  background: linear-gradient(100deg, var(--accent), var(--accent-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cta { padding: 36px 28px; display: grid; gap: 24px; align-items: center; position: relative; overflow: hidden; }
@media (min-width: 860px) { .cta { grid-template-columns: 1fr auto; padding: 56px; } }
.cta::before { content: ""; position: absolute; inset: auto -20% -60% 30%; height: 120%; z-index: -1;
  background: radial-gradient(closest-side, var(--glow-c), transparent); }
.cta h2 { margin-bottom: .3em; }
.cta .lede { margin: 0; }
.ask summary { list-style: none; }
.ask summary::-webkit-details-marker { display: none; }
.ask p { margin: 14px 0 0; color: var(--fg); font-weight: 600; }

footer { border-top: 1px solid var(--line); padding: 36px 0 48px; color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
footer p { margin: 0; }

/* scroll reveal: only when scripts run; never hides content otherwise */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* scene drawing (SVG classes) */
.s-grid { fill: var(--s-grid); }
.s-pipe { fill: none; stroke: var(--s-pipe); stroke-width: 7; stroke-linecap: round; }
.s-pipe-hi { fill: none; stroke: var(--s-pipe-hi); stroke-width: 2; stroke-linecap: round; opacity: .55; }
.s-node { fill: var(--s-node); stroke: var(--s-node-line); stroke-width: 1.5; }
.s-ink { stroke: var(--s-node-ink); stroke-width: 3; stroke-linecap: round; }
.s-led { fill: var(--s-ok); }
.s-led.bad { fill: var(--s-bad); }
.s-pk { fill: var(--s-pk); }
.s-pk.bad { fill: none; stroke: var(--s-bad); stroke-width: 2.5; }
.s-pk.drift { fill: var(--s-bad); }
.s-halo { fill: none; stroke: var(--s-mark); stroke-width: 2; }
.s-mark { fill: none; stroke: var(--s-mark); stroke-width: 2.2; stroke-dasharray: 7 6; }
.s-mark-pulse { fill: none; stroke: var(--s-mark); stroke-width: 1.5; }
.s-ok-bg { fill: var(--s-ok); }
.s-ok-tick { fill: none; stroke: #062a1e; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.s-gate { fill: var(--s-node); stroke: var(--s-node-line); stroke-width: 1.5; }
.s-bin { fill: #1a1424; stroke: #4a2f45; stroke-width: 1.5; }
.s-light-post { stroke: var(--s-node-line); stroke-width: 3; stroke-linecap: round; }
.s-light { fill: var(--s-ok); }
.s-light.red { fill: var(--s-bad); }
.s-bar { stroke: var(--s-bad); stroke-width: 5; stroke-linecap: round; }
.s-token { fill: var(--s-token); }
.s-token.bad { fill: var(--s-bad); }
.s-spin { fill: none; stroke: var(--s-token); stroke-width: 2.2; stroke-linecap: round; }
.s-claim { fill: var(--s-token); }
.s-claim-tick { fill: none; stroke: #2a1c00; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.s-strike { stroke: var(--s-mark); stroke-width: 2.5; stroke-linecap: round; }
.s-dim { fill: var(--s-bg); }
.s-g0 { stop-color: #8be3ff; } .s-g1 { stop-color: #a78bfa; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .picker button, .ba span { transition: none; }
}

/* grid children may shrink below their content width (no horizontal scroll at 360 px) */
.prob-layout, .prob-list, .prob, .hero-grid, .grid { grid-template-columns: minmax(0, 1fr); }
.prob-layout > *, .prob-list > *, .prob > *, .hero-grid > * { min-width: 0; }
@media (min-width: 64rem) { .prob-layout { grid-template-columns: 13rem minmax(0, 1fr); } .hero-grid { grid-template-columns: 5fr 6fr; } }
@media (min-width: 860px) { .prob { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); } }
@media (min-width: 760px) { .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.prob h3, .prob p { overflow-wrap: break-word; }

/* ---- sub-pages (how it works, engagement, security, faq) ---- */
/* header: below 860 px the site nav is a second, scrollable row so every page can be opened on a phone */
.nav a[aria-current="page"] { color: var(--fg); font-weight: 650; }
@media (max-width: 859.98px) {
  html { scroll-padding-top: 116px; }
  .top .wrap { flex-wrap: wrap; height: auto; min-height: 64px; padding-top: 10px; padding-bottom: 6px; row-gap: 4px; }
  .nav { display: flex; order: 3; flex: 1 0 100%; gap: 18px; overflow-x: auto; font-size: .9rem; padding: 4px 0 6px;
    scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { white-space: nowrap; padding: 4px 0; }
}
.page-hero { padding: 48px 0 64px; }
@media (min-width: 720px) { .page-hero { padding: 88px 0 96px; } }
.page-hero h1 { max-width: 18ch; font-size: clamp(2.2rem, 5.4vw, 3.8rem); }
.more { margin: 28px 0 0; font-weight: 600; }
.prose { max-width: 46rem; }
.prose p, .prose li { color: var(--muted); }
.split { display: grid; gap: 8px 56px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .split { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: start; } .split .head { margin: 0; } }
.callout { margin-top: 24px; padding: 28px; border-left: 4px solid var(--accent); }
.callout h3 { margin-bottom: .4em; }
.callout p { color: var(--muted); margin: 0 0 16px; max-width: 46rem; }
.callout p:last-child { margin: 0; }
.card h3 + p, .card h3 + ul { margin-top: 0; }
.tier p { margin: 0 0 16px; color: var(--fg); font-weight: 600; }
@media (min-width: 760px) { .grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 70rem) { .grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* lists with drawn marks (no images, no characters that need escapes) */
.ticks, .crosses { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.ticks li, .crosses li { position: relative; padding-left: 28px; color: var(--muted); }
.ticks li::before { content: ""; position: absolute; left: 3px; top: .5em; width: 12px; height: 6px;
  border-left: 2.5px solid var(--accent-2); border-bottom: 2.5px solid var(--accent-2); transform: rotate(-45deg); }
.crosses li::before, .crosses li::after { content: ""; position: absolute; left: 3px; top: .78em; width: 14px; height: 2.5px;
  background: var(--accent-3); border-radius: 2px; transform: rotate(45deg); }
.crosses li::after { transform: rotate(-45deg); }

/* stepped flow: numbered by CSS counters */
.steps { list-style: none; counter-reset: step; margin: 40px 0 0; padding: 0; display: grid; gap: 16px;
  grid-template-columns: minmax(0, 1fr); }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 70rem) { .steps:not(.two) { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.steps li { counter-increment: step; padding: 24px; background: var(--card); border: 1px solid var(--card-line);
  border-radius: var(--radius); box-shadow: var(--shadow); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.steps li::before { content: counter(step); display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  margin-bottom: 14px; color: #fff; font: 700 .9rem/1 var(--mono); background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.steps h3 { font-size: 1.08rem; }
.steps p { color: var(--muted); margin: 0; font-size: .98rem; }

/* drawn diagrams (inline SVG, themed by the page's colour tokens) */
.diagram { margin: 0; padding: 12px; }
@media (min-width: 720px) { .diagram { padding: 24px; } }
.dg { display: block; width: 100%; height: auto; font-family: var(--sans); }
.dg-narrow { max-width: 440px; margin: 0 auto; }
.dg-wide { display: none; }
@media (min-width: 980px) { .dg-narrow { display: none; } .dg-wide { display: block; } }
.dg-zone { fill: color-mix(in srgb, var(--bg) 55%, transparent); stroke: var(--muted); stroke-width: 1.5; stroke-dasharray: 6 5; }
.dg-zone.ours { stroke: var(--accent); stroke-dasharray: none; }
.dg-in { fill: var(--bg); stroke: var(--line); stroke-width: 1.5; }
.dg-acc { stroke: var(--accent); stroke-width: 2; fill: color-mix(in srgb, var(--accent) 10%, var(--bg)); }
.dg-exit { fill: var(--bg); stroke: var(--muted); stroke-width: 1.5; stroke-dasharray: 5 4; }
.dg-t { fill: var(--fg); font-size: 15px; font-weight: 650; }
.dg-s { fill: var(--muted); font-size: 13px; }
.dg-lab { fill: var(--fg); font-size: 13px; font-weight: 600; }
.dg-ph { fill: var(--accent); font-family: var(--mono); font-size: 12px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; }
.dg-arrow { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; }
.dg-head { fill: var(--accent); }
.dg-line { fill: none; stroke: var(--line); stroke-width: 4; stroke-linecap: round; }
.dg-brk { fill: none; stroke: var(--muted); stroke-width: 1.5; }
.dg-dot { fill: var(--bg); stroke: var(--accent); stroke-width: 2.5; }
.dg-dot.key { fill: var(--accent); }
.dg-pip { fill: var(--accent); }
.dg-pip.key { fill: var(--on-accent); }

/* FAQ */
.faq { display: grid; gap: 12px; max-width: 52rem; }
.faq details { padding: 0; }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 24px; font-weight: 650; font-size: 1.06rem; border-radius: var(--radius); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; color: var(--accent); font-size: 1.5rem; line-height: 1; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 24px 22px; color: var(--muted); }

/* footer site links */
.foot-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot-nav a { color: var(--muted); text-decoration: none; }
.foot-nav a:hover { color: var(--fg); text-decoration: underline; }
@media (prefers-reduced-motion: reduce) { .faq summary::after { transition: none; } }
.diagram + .grid { margin-top: 24px; }

/* start a pilot */
.price-card { padding: 32px 28px; border-top: 4px solid var(--accent); }
.price { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 760; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 14px;
  background: linear-gradient(100deg, var(--accent), var(--accent-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.price-card p { color: var(--muted); }
.price-card .ctas { margin: 22px 0 18px; }
.small { font-size: .9rem; color: var(--muted); }
.foot-legal { display: flex; gap: 16px; }
.foot-legal a { color: var(--muted); }