/* Ledgeron v3 design system. Every value used on the site is a token defined here. */
/* Self-hosted fonts (latin subsets). */
@font-face{font-family:"Geist Mono";font-style:normal;font-weight:400 600;font-display:swap;src:url("/assets/fonts/GeistMono-normal-400_600.woff2") format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:"Instrument Sans";font-style:italic;font-weight:400 700;font-display:swap;src:url("/assets/fonts/InstrumentSans-italic-400_700.woff2") format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:"Instrument Sans";font-style:normal;font-weight:400 700;font-display:swap;src:url("/assets/fonts/InstrumentSans-normal-400_700.woff2") format("woff2");unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}

:root {
  color-scheme: dark;

  /* Colour: measured from the logo mark (cobalt) and the existing OG image (night, signal). */
  --c-night: #081028;
  --c-deep: #0F1A38;
  --c-deep-2: #15234D;
  --c-cobalt: #004890;
  --c-cobalt-2: #3F7FD9;
  --c-cobalt-3: #7FB0F2;
  --c-mist: #E6EBF4;
  --c-mist-2: rgba(230, 235, 244, 0.70);
  --c-mist-3: rgba(230, 235, 244, 0.52);
  --c-paper: #F4F6FA;
  --c-ink: #0B1530;
  --c-ink-2: #3C4A6B;
  --c-signal: #00C890;
  --c-line: rgba(230, 235, 244, 0.12);
  --c-line-2: rgba(230, 235, 244, 0.22);

  /* Fluid type scale (390px to 1440px). */
  --fs--1: clamp(0.75rem, 0.72rem + 0.12vw, 0.8125rem);
  --fs-0: clamp(0.875rem, 0.85rem + 0.1vw, 0.9375rem);
  --fs-1: clamp(1rem, 0.96rem + 0.18vw, 1.125rem);
  --fs-2: clamp(1.125rem, 1.05rem + 0.3vw, 1.3125rem);
  --fs-3: clamp(1.35rem, 1.2rem + 0.6vw, 1.75rem);
  --fs-4: clamp(1.75rem, 1.45rem + 1.2vw, 2.5rem);
  --fs-5: clamp(2.1rem, 1.6rem + 2vw, 3.4rem);
  --fs-6: clamp(2.6rem, 1.7rem + 3.6vw, 5rem);

  /* Spacing on a 4px base, plus a fluid section rhythm. */
  --s-1: 0.25rem; --s-2: 0.5rem; --s-3: 0.75rem; --s-4: 1rem; --s-5: 1.5rem; --s-6: 2rem;
  --s-7: 3rem; --s-8: 4rem; --s-9: 6rem; --s-10: 8rem; --s-11: 10rem; --s-12: 14rem;
  --section: clamp(5rem, 4rem + 5vw, 9rem);
  --gutter: clamp(1rem, 0.5rem + 2.5vw, 2.5rem);
  --container: 1240px;
  --nav-h: 92px;

  /* Shape rule: pills for interactive controls, 16px cards, 28px for the hero card, 10px inputs. */
  --r-input: 10px;
  --r: 16px;
  --r-lg: 28px;
  --r-pill: 999px;

  /* One frosted card material, used for every card on the page. */
  --glass-bg: rgba(240, 243, 249, 0.86);
  --glass-line: rgba(255, 255, 255, 0.55);
  --glass-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 18px 50px rgba(3, 7, 20, 0.35);

  /* Motion. Reveals 1.1s power2.out (Epple), wipes expo (Cyera). */
  --d-fast: 180ms;
  --d: 600ms;
  --d-slow: 1100ms;
  --e-out: cubic-bezier(0.16, 1, 0.3, 1);
  --e-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --e-std: cubic-bezier(0.25, 0.1, 0.25, 1);

  --z-page: 1; --z-nav: 50; --z-menu: 60; --z-intro: 100;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--c-night); scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }
@media (pointer: fine) { html { overscroll-behavior: none; } }

body {
  margin: 0;
  font-family: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--fs-1);
  line-height: 1.6;
  color: var(--c-mist);
  background: var(--c-night);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  -webkit-tap-highlight-color: transparent;
}
img, svg, video { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul, ol, figure, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--c-cobalt-3); outline-offset: 4px; border-radius: 4px; }
::selection { background: var(--c-cobalt-2); color: var(--c-paper); }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

h1, h2, h3 { font-weight: 500; letter-spacing: -0.02em; line-height: 1.05; text-wrap: balance; color: var(--c-mist); }
h2 { font-size: var(--fs-5); }
h3 { font-size: var(--fs-3); letter-spacing: -0.012em; line-height: 1.2; }
p { text-wrap: pretty; }
.mono { font-family: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace; font-variant-numeric: tabular-nums; letter-spacing: 0; }
.muted { color: var(--c-mist-2); }
.k { display: block; font-size: var(--fs--1); font-weight: 500; color: var(--c-cobalt-3); }
.prose p + p { margin-top: 1em; }
/* Text links: light cobalt on dark surfaces; zero-specificity :where so cards on light surfaces can override. */
main :where(a:not(.btn, .brand, .link-arrow, .card-link)) { color: var(--c-cobalt-3); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.18em; transition: color var(--d-fast) var(--e-std); }
main :where(a:not(.btn, .brand, .link-arrow, .card-link)):hover { color: var(--c-mist); }
.glass a, .role-col.after a { color: var(--c-cobalt); }
.glass a:hover, .role-col.after a:hover { color: var(--c-ink); }

.skip-link { position: absolute; top: 8px; left: 8px; z-index: var(--z-intro); padding: 10px 16px; border-radius: var(--r-pill); background: var(--c-paper); color: var(--c-ink); font-weight: 500; transform: translateY(-200%); transition: transform var(--d-fast) var(--e-std); }
.skip-link:focus { transform: none; }

.container { width: min(var(--container), 100% - 2 * var(--gutter)); margin-inline: auto; }

/* ---------- One section heading style ---------- */
.section { position: relative; padding-block: var(--section); scroll-margin-top: calc(var(--nav-h) - 8px); }
[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }
.section-head { max-width: 62ch; margin-bottom: var(--s-8); }
.section-head h2 { margin-bottom: var(--s-4); }
.section-head p { font-size: var(--fs-2); line-height: 1.5; color: var(--c-mist-2); }
.section-head-row { display: flex; justify-content: space-between; align-items: end; gap: var(--s-5); margin-bottom: var(--s-8); }
.section-head-row .section-head { margin-bottom: 0; }
@media (max-width: 760px) { .section-head-row { flex-direction: column; align-items: start; } }
/* Eyebrow: one mono label above section headings. */
.eyebrow { display: inline-flex; align-items: center; gap: 10px; margin-bottom: var(--s-5); font-family: "Geist Mono", ui-monospace, monospace; font-size: 0.75rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-cobalt-3); }
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 1px; background: currentColor; }
.eyebrow.eyebrow { font-size: 0.75rem; line-height: 1.4; color: var(--c-cobalt-3); max-width: none; }
h2.eyebrow { font-size: 0.75rem; line-height: 1.4; letter-spacing: 0.08em; color: var(--c-cobalt-3); }
.bg-night { background: var(--c-night); }
.bg-deep { background: var(--c-deep); }
.bg-cobalt { background: var(--c-cobalt); }

/* ---------- One frosted card ---------- */
.glass { color: var(--c-ink); background: var(--glass-bg); backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); border: 1px solid var(--glass-line); border-radius: var(--r); box-shadow: var(--glass-shadow); }

/* ---------- One button style ---------- */
.btn { position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 0 24px; border-radius: var(--r-pill); font-size: var(--fs-0); font-weight: 500; letter-spacing: -0.005em; white-space: nowrap; transition: background-color var(--d-fast) var(--e-std), color var(--d-fast) var(--e-std), border-color var(--d-fast) var(--e-std), transform var(--d-fast) var(--e-std); touch-action: manipulation; }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--c-paper); color: var(--c-ink); box-shadow: 0 1px 0 rgba(255,255,255,0.6) inset, 0 10px 30px rgba(3, 7, 20, 0.35); }
.btn-primary:hover { background: #fff; }
.btn-primary .btn-arrow { width: 28px; height: 28px; border-radius: 50%; background: var(--c-ink); color: var(--c-paper); display: grid; place-items: center; margin-right: -10px; transition: transform var(--d) var(--e-out), background-color var(--d-fast) var(--e-std); }
.btn-primary:hover .btn-arrow { transform: translateX(3px); background: var(--c-cobalt); }
.btn-secondary { color: var(--c-mist); border: 1px solid var(--c-line-2); background: rgba(8, 16, 40, 0.35); }
.btn-secondary:hover { border-color: var(--c-mist); background: rgba(8, 16, 40, 0.55); }
.btn-arrow svg { width: 14px; height: 14px; }
.btn-lg { min-height: 56px; padding: 0 30px; font-size: var(--fs-1); }
.btn-lg .btn-arrow { width: 34px; height: 34px; margin-right: -14px; }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; color: var(--c-mist); }
.link-arrow svg { width: 16px; height: 16px; transition: transform var(--d) var(--e-out); }
.link-arrow:hover svg { transform: translateX(4px); }
.link-arrow:hover { color: var(--c-cobalt-3); }

/* ---------- Intro ---------- */
.intro { position: fixed; inset: 0; z-index: var(--z-intro); background: var(--c-cobalt); color: var(--c-paper); display: grid; place-items: center; overflow: hidden; clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
.intro-inner { position: relative; display: grid; justify-items: center; gap: 18px; }
.intro-brand { display: flex; align-items: center; gap: 14px; font-size: clamp(1.4rem, 1rem + 1.6vw, 2rem); font-weight: 500; letter-spacing: -0.02em; }
.intro-brand img { width: 44px; height: 40px; filter: brightness(0) invert(1); }
.intro-line { width: min(160px, 40vw); height: 1px; background: rgba(244, 246, 250, 0.25); overflow: hidden; }
.intro-line i { display: block; height: 100%; background: var(--c-paper); transform-origin: left; transform: scaleX(0); }
body.has-intro .hero-content { opacity: 0; }
body.has-intro .nav { opacity: 0; }

/* ---------- Nav (transparent at the top, frosted after scrolling) ---------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav); height: var(--nav-h); background: transparent; transition: background-color var(--d) var(--e-std), box-shadow var(--d) var(--e-std); }
.nav.is-scrolled { background: rgba(8, 16, 40, 0.78); backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); box-shadow: 0 1px 0 var(--c-line); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--s-5); }
.brand { display: inline-flex; align-items: center; gap: 14px; font-weight: 500; letter-spacing: -0.025em; font-size: 1.5rem; line-height: 1; color: var(--c-mist); }
.brand img { width: 38px; height: 34px; filter: brightness(0) invert(1); }
.brand small { display: block; margin-top: 5px; font-size: 0.72rem; font-weight: 400; color: var(--c-mist-3); letter-spacing: 0.01em; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a:not(.btn) { padding: 10px 16px; border-radius: var(--r-pill); font-size: var(--fs-0); color: var(--c-mist-2); transition: color var(--d-fast) var(--e-std), background-color var(--d-fast) var(--e-std); }
.nav-links a:not(.btn):hover { color: var(--c-mist); background: rgba(230, 235, 244, 0.08); }
.nav-links .btn { min-height: 44px; padding: 0 20px; margin-left: 12px; }
.nav-toggle { touch-action: manipulation; display: none; width: 44px; height: 44px; border-radius: var(--r-pill); border: 1px solid var(--c-line-2); place-items: center; align-content: center; background: rgba(8, 16, 40, 0.4); }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--c-mist); border-radius: 2px; transition: transform var(--d) var(--e-out), opacity var(--d-fast); }
.nav-toggle span + span { margin-top: 5px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.menu { position: fixed; inset: 0; z-index: var(--z-menu); overscroll-behavior: contain; background: var(--c-night); display: none; flex-direction: column; justify-content: center; padding: calc(var(--nav-h) + var(--s-6)) var(--gutter) var(--s-8); }
.menu[data-open="true"] { display: flex; }
.menu a { display: block; padding: 12px 0; font-size: var(--fs-3); font-weight: 500; letter-spacing: -0.02em; border-bottom: 1px solid var(--c-line); }
.menu a.btn { display: inline-flex; align-self: flex-start; margin-top: var(--s-6); padding: 0 28px; border: 0; font-size: var(--fs-1); }
@media (max-width: 860px) {
  :root { --nav-h: 76px; }
  .brand { font-size: 1.25rem; gap: 10px; }
  .brand img { width: 32px; height: 29px; }
  .nav-links { display: none; }
  .nav-toggle { display: grid; }
  body[data-menu="open"] { overflow: hidden; }
  body[data-menu="open"] .nav { z-index: calc(var(--z-menu) + 1); background: var(--c-night); box-shadow: 0 1px 0 var(--c-line); opacity: 1 !important; }
}
main { position: relative; z-index: var(--z-page); }

/* ---------- Hero: inset photo card (VS Epple structure) ---------- */
.hero { position: relative; padding: calc(var(--nav-h) + 4px) 10px 10px; background: var(--c-night); }
.hero-card { position: relative; min-height: calc(100dvh - var(--nav-h) - 14px); border-radius: var(--r-lg); overflow: hidden; isolation: isolate; background: var(--c-deep); display: grid; align-items: center; }
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 58% 50%; transform-origin: 60% 50%; will-change: transform; }
.hero-shade { position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(90deg, rgba(8, 16, 40, 0.9) 0%, rgba(8, 16, 40, 0.84) 30%, rgba(8, 16, 40, 0.68) 46%, rgba(8, 16, 40, 0.32) 56%, rgba(8, 16, 40, 0) 65%); }
.hero-content { position: relative; z-index: 2; display: grid; gap: var(--s-5); max-width: min(780px, 51%); padding: clamp(2rem, 4vw, 3.5rem) clamp(1.25rem, 3.4vw, 3rem) clamp(2.5rem, 5vw, 4rem); will-change: transform; }
.hero h1 { font-size: clamp(2.5rem, 0.9rem + 3.3vw, 3.9rem); line-height: 1.02; letter-spacing: -0.03em; text-shadow: 0 2px 30px rgba(3, 7, 20, 0.5); }
.hero h1 .line { display: block; overflow: hidden; padding-bottom: 0.08em; margin-bottom: -0.08em; }
.hero h1 .line-inner { display: block; will-change: transform; }
.hero-lead { max-width: 46ch; font-size: var(--fs-1); line-height: 1.55; color: var(--c-mist); text-shadow: 0 1px 20px rgba(3, 7, 20, 0.6); }
.hero-actions { display: flex; gap: var(--s-3); flex-wrap: wrap; }
.hero .btn-secondary { background: rgba(8, 16, 40, 0.66); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-color: rgba(230, 235, 244, 0.35); }
.hero .btn-secondary:hover { background: rgba(8, 16, 40, 0.8); border-color: var(--c-mist); }
.hero-cards { position: absolute; inset: 0; z-index: 3; pointer-events: none; }
.ui-slot { position: absolute; width: clamp(220px, 19vw, 300px); will-change: transform; }
.ui-card { pointer-events: auto; display: grid; gap: 4px; padding: 16px 18px; font-size: var(--fs--1); line-height: 1.4; }
.ui-card strong { font-weight: 500; font-size: var(--fs-0); color: var(--c-ink); }
.ui-card .ui-k { color: var(--c-cobalt); font-weight: 500; }
.ui-card .ui-v { color: var(--c-ink); }
.ui-card .ui-meta { color: #2a3758; font-size: 0.72rem; margin-top: 2px; }
.ui-card .mono { font-size: 0.76rem; }
.ui-rows { display: grid; gap: 3px; margin-top: 2px; }
.ui-rows div { display: flex; justify-content: space-between; gap: 12px; color: var(--c-ink); }
.ui-rows dt { color: var(--c-ink-2); }
.ui-card-signal { grid-template-columns: auto 1fr; column-gap: 10px; align-items: center; }
.ui-card-signal .ui-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--c-signal); box-shadow: 0 0 0 4px rgba(0, 200, 144, 0.22); grid-row: span 3; }
.ui-slot-handover { left: 53%; top: 11%; }
.ui-slot-balance { left: 76%; top: 30%; width: clamp(190px, 15vw, 240px); }
.ui-slot-reconciled { left: 62%; top: 72%; width: clamp(210px, 16vw, 260px); }
.ui-slot-pool { left: 44%; top: 78%; width: clamp(190px, 15vw, 240px); }
@media (max-width: 1100px) { .ui-slot-handover { left: 52%; top: 9%; } .ui-slot-balance { left: 74%; top: 34%; } .ui-slot-pool { display: none; } .hero h1 { font-size: clamp(2.2rem, 1rem + 3vw, 3.4rem); } }
@media (max-width: 760px) {
  .hero { padding: calc(var(--nav-h) + 2px) 8px 8px; }
  .hero-card { min-height: calc(100dvh - var(--nav-h) - 10px); align-items: start; }
  .hero-media img { object-position: 50% 62%; }
  .hero-shade { background: linear-gradient(180deg, rgba(8, 16, 40, 0.9) 0%, rgba(8, 16, 40, 0.78) 34%, rgba(8, 16, 40, 0.3) 50%, rgba(8, 16, 40, 0) 60%); }
  .hero-content { max-width: none; padding: 1.5rem 1.25rem 0; gap: var(--s-4); }
  .hero h1 { font-size: clamp(2rem, 9.2vw, 2.5rem); }
  .hero-lead { font-size: var(--fs-0); max-width: 38ch; }
  .ui-slot { width: 190px; }
  .ui-slot-handover { left: 5%; top: 52%; }
  .ui-slot-reconciled { left: auto; right: 5%; top: 76%; width: 190px; }
  .ui-slot-balance, .ui-slot-pool { display: none; }
  .hero .btn-secondary { display: none; }
}

/* ---------- Definition (what is Ledgeron) ---------- */
.define { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: clamp(1.5rem, 4vw, 4rem); align-items: start; }
.define h2.eyebrow { margin: 0.6em 0 0; }
.define-statement { font-size: var(--fs-4); line-height: 1.22; letter-spacing: -0.02em; font-weight: 500; color: var(--c-mist); max-width: 34ch; }
.define-statement em { font-style: normal; color: var(--c-mist-2); }
.facts { margin-top: var(--s-8); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--c-line); }
.facts div { padding: var(--s-5) var(--s-5) 0 0; }
.facts div + div { padding-left: var(--s-5); border-left: 1px solid var(--c-line); }
.facts dt { font-family: "Geist Mono", monospace; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--c-mist-3); margin-bottom: 8px; }
.facts dd { font-size: var(--fs-0); color: var(--c-mist); font-weight: 500; line-height: 1.45; }
@media (max-width: 900px) { .define { grid-template-columns: 1fr; } .facts { grid-template-columns: 1fr 1fr; } .facts div:nth-child(3) { padding-left: 0; border-left: 0; } .facts div { padding-bottom: var(--s-5); } }
@media (max-width: 520px) { .facts { grid-template-columns: 1fr; } .facts div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--c-line); } }
.scene { display: block; border-radius: var(--r); overflow: hidden; background: var(--c-deep); }
.scene img { width: 100%; height: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

/* ---------- Problem: four cells in one ruled grid ---------- */
.problem-head { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(2rem, 6vw, 6rem); align-items: end; margin-bottom: var(--s-8); }
.problem-head h2 { max-width: 16ch; }
.problem-head p { font-size: var(--fs-2); line-height: 1.5; color: var(--c-mist-2); max-width: 44ch; }
.problems { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--c-line); }
.problem-item { padding: var(--s-6) var(--s-5) 0 0; }
.problem-item + .problem-item { padding-left: var(--s-5); border-left: 1px solid var(--c-line); }
.problem-item .n { display: block; font-size: var(--fs--1); color: var(--c-cobalt-3); margin-bottom: var(--s-6); }
.problem-item h3 { font-size: var(--fs-2); margin-bottom: 10px; }
.problem-item p { font-size: var(--fs-0); line-height: 1.55; color: var(--c-mist-2); }
@media (max-width: 1000px) { .problem-head { grid-template-columns: 1fr; gap: var(--s-4); } .problems { grid-template-columns: 1fr 1fr; } .problem-item:nth-child(3) { padding-left: 0; border-left: 0; } .problem-item { padding-bottom: var(--s-6); } .problem-item:nth-child(n+3) { border-top: 1px solid var(--c-line); } }
@media (max-width: 560px) { .problems { grid-template-columns: 1fr; } .problem-item + .problem-item { padding-left: 0; border-left: 0; border-top: 1px solid var(--c-line); } .problem-item .n { margin-bottom: var(--s-3); } }
.faq-more { margin-top: var(--s-7); }

/* ---------- Process animation (route, stations, mover, ledger) ---------- */
.process { display: grid; gap: var(--s-6); }
.process-stage { display: grid; gap: var(--s-6); }
.process-steps { margin-top: var(--s-4); }
.route { width: 100%; height: auto; overflow: visible; }
.route-m { display: none; }
.route-base { fill: none; stroke: var(--c-cobalt-3); stroke-opacity: 0.22; stroke-width: 2; stroke-dasharray: 2 8; stroke-linecap: round; }
.route-progress { fill: none; stroke: var(--c-cobalt-3); stroke-opacity: 0.55; stroke-width: 2; stroke-linecap: round; }
.route-trail { fill: none; stroke-width: 3; stroke-linecap: round; }
.station { cursor: pointer; }
.station-glow { fill: var(--c-cobalt-2); opacity: 0; }
.station-ring { fill: var(--c-night); stroke: var(--c-cobalt-3); stroke-opacity: 0.4; stroke-width: 1.5; transition: stroke-opacity var(--d) var(--e-std), stroke var(--d) var(--e-std); }
.station use { fill: none; stroke: var(--c-cobalt-3); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; opacity: 0.55; transition: opacity var(--d) var(--e-std), stroke var(--d) var(--e-std); }
.station text { fill: var(--c-mist-2); font-size: 15px; font-family: "Instrument Sans", sans-serif; text-anchor: middle; transition: fill var(--d) var(--e-std); }
.route-m .station text { font-size: 11px; }
.route-m .station use { stroke-width: 1.5; }
.station.is-on .station-ring { stroke-opacity: 1; }
.station.is-on use { opacity: 1; }
.station.is-on text { fill: var(--c-mist); }
.station.is-done .station-ring { stroke: var(--c-signal); stroke-opacity: 0.9; }
.station.is-done use { stroke: var(--c-signal); opacity: 1; }
/* The moving record: a cobalt light with a soft glow and a fading trail. */
.mover { pointer-events: none; }
.marker-glow { fill: var(--c-cobalt-2); opacity: 0.75; }
.marker-core { fill: #cfe3ff; }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-5); }
.pstep-btn { touch-action: manipulation; display: grid; grid-template-columns: 2.2rem 1fr; gap: 10px; align-items: start; text-align: left; width: 100%; padding: 12px 12px 14px; border-radius: var(--r); border: 1px solid transparent; transition: background-color var(--d-fast) var(--e-std), border-color var(--d-fast) var(--e-std); }
.pstep-btn:hover { background: rgba(230, 235, 244, 0.04); }
.pstep .n { font-size: var(--fs--1); color: var(--c-mist-3); padding-top: 5px; }
.pstep-title { display: block; font-weight: 500; letter-spacing: -0.01em; font-size: var(--fs-1); color: var(--c-mist-2); line-height: 1.3; transition: color var(--d) var(--e-std); }
.pstep-text { display: block; font-size: var(--fs--1); color: var(--c-mist-3); line-height: 1.5; margin-top: 6px; }
.pstep[aria-current="step"] .pstep-btn { background: rgba(230, 235, 244, 0.05); border-color: var(--c-line); }
.pstep[aria-current="step"] .pstep-title { color: var(--c-mist); }
.pstep[aria-current="step"] .n { color: var(--c-cobalt-3); }
.process-side { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: var(--s-3); align-items: start; }
.process-side .ledger { grid-column: 1; }
.ledger { overflow: hidden; }
.ledger-head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s-4); padding: 16px 22px 12px; border-bottom: 1px solid rgba(11, 21, 48, 0.1); }
.ledger-head strong { font-weight: 500; font-size: var(--fs-1); }
.ledger-head span { font-size: var(--fs--1); color: var(--c-ink-2); }
.ledger-rows { padding: 6px 22px; min-height: 4rem; display: grid; align-content: start; }
.ledger-row { display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: baseline; padding: 9px 0; border-bottom: 1px solid rgba(11, 21, 48, 0.08); font-size: var(--fs-0); opacity: 0; transform: translateY(8px); }
.ledger-row:last-child { border-bottom: 0; }
.ledger-row .what { color: var(--c-ink); }
.ledger-row .what small { display: block; color: var(--c-ink-2); font-size: var(--fs--1); margin-top: 2px; }
.ledger-row .qty { color: var(--c-ink); text-align: right; white-space: nowrap; }
.ledger-foot { display: grid; gap: 8px; padding: 14px 22px 16px; border-top: 1px solid rgba(11, 21, 48, 0.1); background: rgba(11, 21, 48, 0.03); }
.ledger-foot .balances { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: var(--fs--1); color: var(--c-ink-2); }
.ledger-foot .balances b { font-weight: 500; color: var(--c-ink); }
.ledger-foot .net { font-size: var(--fs-0); font-weight: 500; color: var(--c-ink-2); display: inline-flex; align-items: center; gap: 8px; }
.ledger-foot .net i { width: 10px; height: 10px; border-radius: 50%; background: rgba(11, 21, 48, 0.18); transition: background-color var(--d) var(--e-std), box-shadow var(--d) var(--e-std); }
.ledger.is-reconciled .net { color: var(--c-ink); }
.ledger.is-reconciled .net i { background: var(--c-signal); box-shadow: 0 0 0 4px rgba(0, 200, 144, 0.2); }
.ledger-note { padding: 0 22px 14px; font-size: var(--fs--1); color: var(--c-ink-2); }
.process-replay { min-height: 44px; padding: 0 18px; gap: 8px; }
@media (max-width: 760px) {
  .process { gap: var(--s-5); }
  .process-stage { gap: var(--s-4); }
  .route-h { display: none; }
  .route-m { display: block; }
  .process-steps { grid-template-columns: 1fr; gap: 2px; }
  .process-side { grid-template-columns: 1fr auto; }
  .process-side .ledger { grid-column: 1 / -1; }
  .pstep-btn { padding: 10px 10px; }
  .ledger-head, .ledger-rows, .ledger-foot, .ledger-note { padding-inline: 16px; }
  .ledger-row { padding: 7px 0; }
  .process-replay { justify-self: start; }
}
@media (min-width: 761px) and (max-width: 1000px) { .process-steps { grid-template-columns: 1fr 1fr; } }

/* ---------- Capability grid (ruled bento) ---------- */
.bento { --tile: var(--c-night); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--c-line); border: 1px solid var(--c-line); border-radius: var(--r); overflow: hidden; }
.bg-deep .bento { --tile: var(--c-deep); }
.tile { background: var(--tile); padding: clamp(1.5rem, 2.4vw, 2.25rem); display: grid; align-content: start; gap: 10px; min-height: 15rem; }
.tile .n { font-family: "Geist Mono", monospace; font-size: 0.72rem; letter-spacing: 0.06em; color: var(--c-mist-3); margin-bottom: var(--s-5); }
.tile h3 { font-size: var(--fs-2); }
.tile p { font-size: var(--fs-0); line-height: 1.55; color: var(--c-mist-2); max-width: 46ch; }
.mini { margin-top: auto; padding-top: var(--s-5); display: grid; gap: 0; font-size: 0.75rem; color: var(--c-mist-2); }
.mini li { display: grid; grid-template-columns: 4.2rem 1fr auto; gap: 10px; padding: 8px 0; border-top: 1px solid var(--c-line); }
.mini b { font-weight: 500; color: var(--c-mist); }
.mini li span:first-child { color: var(--c-mist-3); }
.mini li.ok b { color: var(--c-signal); }
.tile { grid-template-rows: auto auto auto 1fr; }
.tile .mini { align-self: end; }
.tile-lg { grid-column: span 2; grid-row: span 2; grid-template-rows: auto auto 1fr; }
.tile-lg h3 { font-size: var(--fs-3); max-width: 20ch; }
.tile-lg .scene { margin-top: var(--s-5); align-self: end; }
.tile-lg .scene img { aspect-ratio: 16 / 8; }
.tile-wide { grid-column: 1 / -1; min-height: 0; grid-template-rows: auto; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); align-items: center; gap: var(--s-6); }
.tile-wide .n { margin: 0; }
.std-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-5); }
.std-list li { display: grid; gap: 4px; }
.std-list .code { font-family: "Geist Mono", monospace; font-size: var(--fs-0); color: var(--c-mist); }
.std-list span:not(.code) { font-size: var(--fs--1); color: var(--c-mist-3); line-height: 1.45; }
@media (max-width: 1000px) { .bento { grid-template-columns: 1fr 1fr; } .tile-lg { grid-row: auto; } .tile-wide { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .bento { grid-template-columns: 1fr; } .tile-lg { grid-column: auto; } .tile { min-height: 0; } .std-list { grid-template-columns: 1fr 1fr; } }

/* ---------- Who: one feature card and two compact cards ---------- */
.who-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); grid-template-rows: auto auto; gap: 14px; }
.who-card { display: grid; align-content: start; gap: 10px; padding: 14px 14px 26px; border-radius: var(--r); border: 1px solid var(--c-line); background: rgba(230, 235, 244, 0.03); }
.who-card .scene { margin-bottom: var(--s-4); }
.who-card .k, .who-card h3, .who-card p, .who-card ul { padding-inline: 12px; }
.who-card h3 { font-size: var(--fs-2); }
.who-card p { font-size: var(--fs-0); color: var(--c-mist-2); line-height: 1.55; max-width: 52ch; }
.who-card ul { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.who-card li { font-size: 0.75rem; color: var(--c-mist-2); padding: 4px 10px; border: 1px solid var(--c-line); border-radius: var(--r-pill); }
.who-card.lead { grid-row: span 2; }
.who-card.lead h3 { font-size: var(--fs-3); }
.who-card:not(.lead) { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); grid-template-rows: auto auto auto 1fr; align-content: stretch; column-gap: 6px; align-items: start; padding-bottom: 14px; }
.who-card:not(.lead) .scene { grid-row: 1 / 5; margin: 0; height: 100%; min-height: 220px; }
.who-card:not(.lead) .scene img { aspect-ratio: auto; height: 100%; }
.who-card:not(.lead) .k { padding-top: 8px; }
@media (max-width: 1000px) { .who-grid { grid-template-columns: 1fr; } .who-card.lead { grid-row: auto; } }
@media (max-width: 560px) { .who-card:not(.lead) { grid-template-columns: 1fr; } .who-card:not(.lead) .scene { grid-row: auto; margin-bottom: var(--s-4); } .who-card:not(.lead) .scene img { aspect-ratio: 4 / 3; } }

/* ---------- FAQ accordion ---------- */
.faq-layout { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.faq-layout .section-head { margin-bottom: 0; }
.faq-layout .section-head .link-arrow { margin-top: var(--s-6); }
.qa-list { border-top: 1px solid var(--c-line); }
.qa { border-bottom: 1px solid var(--c-line); }
.qa summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 1fr 24px; gap: var(--s-4); align-items: center; padding: 22px 0; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary h3 { font-size: var(--fs-2); line-height: 1.3; transition: color var(--d-fast) var(--e-std); }
.qa summary:hover h3 { color: var(--c-cobalt-3); }
.qa .pm { position: relative; width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--c-line-2); }
.qa .pm::before, .qa .pm::after { content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 1.5px; background: var(--c-mist); transform: translate(-50%, -50%); transition: transform var(--d) var(--e-out); }
.qa .pm::after { transform: translate(-50%, -50%) rotate(90deg); }
.qa[open] .pm::after { transform: translate(-50%, -50%) rotate(0deg); }
.qa-a { padding: 0 48px 24px 0; font-size: var(--fs-0); line-height: 1.65; color: var(--c-mist-2); }
.qa-a p + p { margin-top: 10px; }
.faq-group + .faq-group { margin-top: var(--s-8); }
.faq-group > h2 { font-size: var(--fs-3); margin-bottom: var(--s-4); }
@media (max-width: 900px) { .faq-layout { grid-template-columns: 1fr; } .qa-a { padding-right: 0; } }

/* ---------- Article index (editorial list) ---------- */
.index-list { border-top: 1px solid var(--c-line); }
.index-list a { color: inherit; text-decoration: none; display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 7fr) auto; gap: var(--s-5); align-items: baseline; padding: 24px 0; border-bottom: 1px solid var(--c-line); transition: background-color var(--d-fast) var(--e-std); }
.index-list .k { font-family: "Geist Mono", monospace; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--c-mist-3); }
.index-list h3 { font-size: var(--fs-2); line-height: 1.3; transition: color var(--d-fast) var(--e-std); }
.index-list p { margin-top: 6px; font-size: var(--fs-0); color: var(--c-mist-2); max-width: 60ch; }
.index-list svg { width: 18px; height: 18px; color: var(--c-mist-2); transition: transform var(--d) var(--e-out), color var(--d-fast); }
.index-list a:hover h3 { color: var(--c-cobalt-3); }
.index-list a:hover svg { transform: translateX(4px); color: var(--c-mist); }
@media (max-width: 760px) { .index-list a { grid-template-columns: 1fr auto; gap: 6px 16px; } .index-list .k { grid-column: 1 / -1; } }

/* ---------- Spec rows (sub-pages) ---------- */
.spec { border-top: 1px solid var(--c-line); }
.spec-row { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(1.5rem, 5vw, 5rem); padding: var(--s-7) 0; border-bottom: 1px solid var(--c-line); }
.spec-row .n { display: block; font-family: "Geist Mono", monospace; font-size: 0.72rem; letter-spacing: 0.06em; color: var(--c-cobalt-3); margin-bottom: var(--s-3); }
.spec-row h2, .spec-row h3 { font-size: var(--fs-3); max-width: 18ch; }
.spec-body { display: grid; gap: var(--s-4); align-content: start; }
.spec-body p { font-size: var(--fs-1); line-height: 1.6; color: var(--c-mist-2); max-width: 58ch; }
.spec-body ul { display: grid; gap: 8px; }
.spec-body li { position: relative; padding-left: 18px; font-size: var(--fs-0); color: var(--c-mist-2); }
.spec-body li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 7px; height: 1px; background: var(--c-cobalt-3); }
.spec-body .scene { max-width: 520px; }
.spec-body dl { display: grid; grid-template-columns: 7rem 1fr; gap: 10px 18px; font-size: var(--fs-0); }
.spec-body dt { font-family: "Geist Mono", monospace; color: var(--c-mist); }
.spec-body dd { color: var(--c-mist-2); }
@media (max-width: 860px) { .spec-row { grid-template-columns: 1fr; gap: var(--s-4); padding: var(--s-6) 0; } }
@media (max-width: 480px) { .spec-body dl { grid-template-columns: 1fr; gap: 2px; } .spec-body dd { margin-bottom: 10px; } }
.block + .block { margin-top: var(--section); }
.block > h2 { font-size: var(--fs-4); margin-bottom: var(--s-6); max-width: 24ch; }

/* ---------- Pricing plans ---------- */
.plans { --tile: var(--c-night); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--c-line); border: 1px solid var(--c-line); border-radius: var(--r); overflow: hidden; }
.plan { background: var(--tile); padding: clamp(1.5rem, 2.6vw, 2.5rem); display: grid; grid-template-rows: auto auto auto 1fr auto; gap: var(--s-4); }
.plan h2 { font-size: var(--fs-2); }
.plan .for { font-size: var(--fs-0); color: var(--c-mist-2); min-height: 3em; }
.plan .price { display: grid; gap: 4px; padding: var(--s-5) 0; border-block: 1px solid var(--c-line); }
.plan .price b { font-size: var(--fs-4); font-weight: 500; letter-spacing: -0.02em; color: var(--c-mist); line-height: 1.1; }
.plan .price small { font-size: var(--fs--1); color: var(--c-mist-3); }
.plan ul { display: grid; gap: 10px; align-content: start; }
.plan li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; font-size: var(--fs-0); color: var(--c-mist-2); line-height: 1.45; }
.plan li svg { width: 16px; height: 16px; margin-top: 2px; fill: none; stroke: var(--c-signal); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.plan .btn { justify-self: start; margin-top: var(--s-4); }
.plan.featured { background: var(--c-deep-2); }
.plan .tag { justify-self: start; font-family: "Geist Mono", monospace; font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--c-ink); background: var(--c-cobalt-3); padding: 3px 8px; border-radius: 4px; }
.plans-note { margin-top: var(--s-5); font-size: var(--fs--1); color: var(--c-mist-3); }
@media (max-width: 900px) { .plans { grid-template-columns: 1fr; } .plan .for { min-height: 0; } }

/* ---------- Demo form ---------- */
.demo { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5) var(--s-4); }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: var(--fs--1); font-weight: 500; color: var(--c-mist); }
.field label span { color: var(--c-mist-3); font-weight: 400; }
.field input, .field textarea, .field select { width: 100%; min-height: 48px; padding: 12px 14px; border-radius: var(--r-input); border: 1px solid var(--c-line-2); background: rgba(230, 235, 244, 0.04); color: var(--c-mist); font: inherit; font-size: var(--fs-0); transition: border-color var(--d-fast) var(--e-std), background-color var(--d-fast) var(--e-std); }
.field textarea { min-height: 128px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--c-mist-3); }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--c-cobalt-3); background: rgba(230, 235, 244, 0.07); }
.form-foot { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-4); }
.form-foot p { font-size: var(--fs--1); color: var(--c-mist-3); max-width: 46ch; }
.demo-aside { display: grid; gap: var(--s-6); padding-top: 4px; }
.demo-aside h2 { font-size: var(--fs-2); margin-bottom: var(--s-3); }
.demo-aside ol { display: grid; gap: 14px; counter-reset: s; }
.demo-aside li { counter-increment: s; display: grid; grid-template-columns: 2rem 1fr; font-size: var(--fs-0); color: var(--c-mist-2); }
.demo-aside li::before { content: counter(s, decimal-leading-zero); font-family: "Geist Mono", monospace; font-size: var(--fs--1); color: var(--c-cobalt-3); padding-top: 2px; }
.demo-aside .contact { padding-top: var(--s-5); border-top: 1px solid var(--c-line); font-size: var(--fs-0); color: var(--c-mist-2); }
.demo-aside .contact a { color: var(--c-mist); }
@media (max-width: 900px) { .demo { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .form { grid-template-columns: 1fr; } }

/* ---------- Glossary ---------- */
.terms { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6) var(--s-7); }
.terms dt { font-family: "Geist Mono", monospace; font-size: var(--fs--1); color: var(--c-cobalt-3); margin-bottom: 8px; }
.terms dd { font-size: var(--fs-0); color: var(--c-mist-2); line-height: 1.55; }
@media (max-width: 900px) { .terms { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .terms { grid-template-columns: 1fr; } }

.terms-page { max-width: none; }
.terms-page div { scroll-margin-top: calc(var(--nav-h) + 16px); }

/* ---------- CTA ---------- */
.cta { text-align: center; color: var(--c-paper); overflow: hidden; }
.cta::before { content: ""; position: absolute; left: 50%; top: -30%; width: 60vw; height: 160%; transform: translateX(-50%); background: radial-gradient(ellipse at 50% 0%, rgba(230, 235, 244, 0.22), rgba(230, 235, 244, 0) 65%); pointer-events: none; }
.cta .container { position: relative; display: grid; justify-items: center; gap: var(--s-5); max-width: 760px; }
.cta h2 { font-size: var(--fs-6); color: var(--c-paper); }
.cta p { font-size: var(--fs-2); color: rgba(244, 246, 250, 0.82); max-width: 48ch; }
.cta-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); justify-content: center; }
.cta .btn-secondary { border-color: rgba(244, 246, 250, 0.4); background: rgba(0, 0, 0, 0.1); }
.cta .btn-secondary:hover { border-color: var(--c-paper); }
.cta-facts { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 28px; font-size: var(--fs--1); color: rgba(244, 246, 250, 0.72); padding-top: var(--s-4); }

/* ---------- Footer ---------- */
.footer { position: relative; z-index: var(--z-page); padding: var(--s-9) 0 var(--s-6); border-top: 1px solid var(--c-line); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--s-7); margin-bottom: var(--s-8); }
.footer-brand p { margin-top: var(--s-4); font-size: var(--fs-0); color: var(--c-mist-2); max-width: 36ch; }
.footer h2 { font-size: var(--fs--1); font-weight: 500; letter-spacing: 0.02em; color: var(--c-mist-3); margin-bottom: var(--s-4); }
.footer li + li { margin-top: 8px; }
.footer li a { font-size: var(--fs-0); color: var(--c-mist-2); transition: color var(--d-fast) var(--e-std); }
.footer li a:hover { color: var(--c-mist); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-3); padding-top: var(--s-5); border-top: 1px solid var(--c-line); font-size: var(--fs--1); color: var(--c-mist-3); }
.footer-bottom a:hover { color: var(--c-mist); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Sub-pages, articles and legal pages (same tokens, cards, buttons and heading block as the homepage) ---------- */
.subpage .nav { position: sticky; }
.page-hero { position: relative; padding: var(--s-9) 0 var(--s-8); border-bottom: 1px solid var(--c-line); overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(var(--c-line) 1px, transparent 1px), linear-gradient(90deg, var(--c-line) 1px, transparent 1px); background-size: 64px 64px; background-position: -1px -1px; -webkit-mask-image: radial-gradient(ellipse 60% 90% at 100% 0%, #000 0%, transparent 70%); mask-image: radial-gradient(ellipse 60% 90% at 100% 0%, #000 0%, transparent 70%); opacity: 0.55; }
.page-hero-inner { position: relative; }
.page-hero h1 { font-size: var(--fs-6); max-width: 18ch; }
.page-article .page-hero h1, .page-hub .page-hero h1 { font-size: var(--fs-5); max-width: 26ch; }
.page-lead { margin-top: var(--s-5); max-width: 62ch; font-size: var(--fs-2); line-height: 1.5; color: var(--c-mist-2); }
.crumbs { margin-bottom: var(--s-5); font-size: var(--fs--1); color: var(--c-mist-3); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 6px 10px; }
.crumbs li + li::before { content: "/"; margin-right: 10px; color: var(--c-mist-3); }
.crumbs a { color: var(--c-mist-2); }
.crumbs a:hover { color: var(--c-mist); }
.crumbs [aria-current] { color: var(--c-mist); }
.article-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: var(--s-4); font-size: var(--fs--1); color: var(--c-mist-3); }
.article-meta .k { display: inline; }
@media (max-width: 760px) { .page-hero { padding: var(--s-7) 0 var(--s-6); } }
.page-section { padding-block: var(--s-9) var(--section); }

/* Prose: text column of about 68 characters, generous leading, clear h2 and h3 levels, styled lists, tables and quotes. */
.prose { max-width: 68ch; font-size: var(--fs-1); line-height: 1.7; color: var(--c-mist-2); }
.prose > * + * { margin-top: var(--s-5); }
.prose h2 { font-size: var(--fs-4); color: var(--c-mist); margin-top: var(--s-9); }
.prose h3 { font-size: var(--fs-3); color: var(--c-mist); margin-top: var(--s-7); }
.prose h2 + *, .prose h3 + * { margin-top: var(--s-4); }
.prose strong { color: var(--c-mist); font-weight: 500; }
.prose code { font-family: "Geist Mono", monospace; font-size: 0.9em; color: var(--c-mist); }
.prose ul, .prose ol { padding-left: 1.3rem; display: grid; gap: 10px; }
.prose ul { list-style: none; padding-left: 0; }
.prose ul li { position: relative; padding-left: 18px; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 0.78em; width: 7px; height: 1px; background: var(--c-cobalt-3); }
.prose ol { list-style: decimal; }
.prose ol li::marker { color: var(--c-cobalt-3); font-family: "Geist Mono", monospace; font-size: 0.9em; }
.prose .quote, .prose .pull { margin-block: var(--s-6); padding: var(--s-4) var(--s-5); border-left: 2px solid var(--c-cobalt-3); color: var(--c-mist); font-size: var(--fs-2); line-height: 1.45; letter-spacing: -0.01em; }
.prose .pull p + p { margin-top: 8px; }
.prose .em { font-size: var(--fs-2); color: var(--c-mist); line-height: 1.45; }
.prose table { width: 100%; border-collapse: collapse; font-size: var(--fs-0); line-height: 1.5; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--c-line); }
.prose th { color: var(--c-mist); font-weight: 500; border-bottom-color: var(--c-line-2); }
.prose td { color: var(--c-mist-2); }
.prose tr:last-child td { border-bottom: 0; }
.prose .cards { max-width: none; }
.prose .actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-7); }
.prose .legal-meta { font-size: var(--fs--1); color: var(--c-mist-3); }
.prose .notice { padding: 14px 18px; border-radius: var(--r); background: rgba(230, 235, 244, 0.05); border: 1px solid var(--c-line); font-size: var(--fs-0); color: var(--c-mist-2); }
.prose .notice strong { color: var(--c-mist); }
.prose .k { margin-bottom: 6px; }
.page-body.prose { max-width: 68ch; }
.page-body .cards { margin-top: var(--s-6); }

/* Cards: the same panel and frosted card as the homepage. */
.cards { display: grid; gap: 14px; }
.cards.cols-1 { grid-template-columns: 1fr; }
.cards.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.panel { display: grid; align-content: start; gap: 8px; padding: 22px 24px; border-radius: var(--r); background: rgba(230, 235, 244, 0.04); border: 1px solid var(--c-line); color: var(--c-mist-2); font-size: var(--fs-0); line-height: 1.55; }
.panel h3 { font-size: var(--fs-2); color: var(--c-mist); }
.panel p { color: var(--c-mist-2); }
.panel .panel-head { display: grid; gap: 6px; }
.panel .notice { margin-top: 6px; }
.panel .k { margin: 0; }
.card-link { transition: border-color var(--d-fast) var(--e-std), background-color var(--d-fast) var(--e-std); }
.card-link:hover { border-color: var(--c-line-2); background: rgba(230, 235, 244, 0.07); }
.card-link .link-arrow { margin-top: 8px; }
.prose .cards .panel, .prose .cards .panel p, .prose .cards .panel h3 { margin-top: 0; }
.page-body .cards.cols-2, .page-body .cards.cols-3 { max-width: none; }
@media (max-width: 900px) { .cards.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .cards.cols-2, .cards.cols-3 { grid-template-columns: 1fr; } }
.page-section .page-body { max-width: 960px; }
.page-section .page-body > p, .page-section .page-body > ul, .page-section .page-body > ol, .page-section .page-body > h2, .page-section .page-body > h3, .page-section .page-body > blockquote, .page-section .page-body > .notice, .page-section .page-body > .legal-meta { max-width: 68ch; }
.legal .page-body { max-width: 68ch; }
.legal .page-body table { font-size: var(--fs--1); }

/* Articles: sticky contents on wide screens, reading column, callouts, CTA card. */
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s-8); }
@media (min-width: 1100px) { .article-grid { grid-template-columns: 240px minmax(0, 1fr); } .article-aside { position: sticky; top: calc(var(--nav-h) + var(--s-5)); align-self: start; } }
.toc { padding: 18px 20px; border-radius: var(--r); border: 1px solid var(--c-line); background: rgba(230, 235, 244, 0.03); font-size: var(--fs--1); }
.toc ol { list-style: none; padding: 0; margin-top: 10px; display: grid; gap: 8px; counter-reset: toc; }
.toc li { counter-increment: toc; display: grid; grid-template-columns: 1.6rem 1fr; gap: 6px; }
.toc li::before { content: counter(toc, decimal-leading-zero); font-family: "Geist Mono", monospace; color: var(--c-mist-3); }
.toc a { color: var(--c-mist-2); text-decoration: none; }
.toc a:hover { color: var(--c-mist); }
.article-body h2 { scroll-margin-top: calc(var(--nav-h) + 24px); }
.prose .cta-panel { margin-top: var(--s-9); padding: 28px 30px 30px; max-width: none; }
.prose .cta-panel .k { color: var(--c-cobalt); }
.prose .cta-panel h2 { color: var(--c-ink); font-size: var(--fs-4); margin-top: 6px; }
.prose .cta-panel p { color: var(--c-ink-2); margin-top: 12px; }
.prose .cta-panel .btn { margin-top: 18px; }
.prose .linkbox { margin-top: var(--s-7); max-width: none; }
.prose .linkbox h2, .prose .linkbox h3 { font-size: var(--fs-2); margin-top: 4px; }
.prose .linkbox ul { margin-top: 10px; }
.related-section .cards { max-width: none; }
.hub-group + .hub-group { margin-top: var(--s-9); }
.hub-group h2 { font-size: var(--fs-4); margin-bottom: var(--s-5); }
.hub .cards .panel h3 { font-size: var(--fs-2); }
.hub .cards .panel p { color: var(--c-mist-2); }

/* ---------- Cookie banner (injected by cookie-consent.js) ---------- */
body.has-intro .ec-cookie { display: none; }
.ec-cookie { left: auto !important; right: 20px !important; bottom: 20px !important; max-width: 420px !important; background: var(--c-paper) !important; color: var(--c-ink) !important; border: 0 !important; border-radius: var(--r) !important; box-shadow: var(--glass-shadow) !important; font-family: inherit !important; padding: 20px 22px !important; }
.ec-cookie h2 { color: var(--c-ink) !important; font-size: var(--fs-1) !important; font-weight: 500 !important; }
.ec-cookie p { color: var(--c-ink-2) !important; font-size: var(--fs-0) !important; }
.ec-cookie a { color: var(--c-cobalt) !important; text-decoration: underline; }
.ec-cookie .ec-check { color: var(--c-ink) !important; font-size: var(--fs--1) !important; }
.ec-cookie .ec-btn { font-weight: 500 !important; font-size: var(--fs--1) !important; padding: 9px 14px !important; border: 1px solid rgba(11,21,48,0.18) !important; background: var(--c-paper) !important; color: var(--c-ink) !important; }
.ec-cookie .ec-btn:first-child { background: var(--c-ink) !important; color: var(--c-paper) !important; border-color: var(--c-ink) !important; }
.ec-cookie .ec-btn.dark { background: transparent !important; color: var(--c-ink) !important; }
@media (max-width: 520px) { .ec-cookie { left: 12px !important; right: 12px !important; bottom: 12px !important; } }

/* ---------- Reveal defaults (JS adds motion; without JS everything is visible) ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(28px); }
.js [data-reveal].is-in { opacity: 1; transform: none; transition: opacity var(--d-slow) var(--e-std), transform var(--d-slow) var(--e-out); }

/* ---------- Reduced motion: no intro, no parallax, no smooth scroll, content instantly ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .intro { display: none !important; }
  body.has-intro .hero-content, body.has-intro .nav { opacity: 1; }
  body.has-intro .ec-cookie { display: block; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .hero h1 .line-inner { transform: none !important; }
  .ledger-row { opacity: 1; transform: none; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .glass { background: var(--c-paper); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .nav.is-scrolled { backdrop-filter: none; -webkit-backdrop-filter: none; background: var(--c-night); }
}