/* FastFDE design system — tokens, base, layout, components. */

:root {
  --ink: #0a0d12;
  --ink-2: #121720;
  --ink-3: #1b2230;
  --ink-line: #283042;
  --paper: #fafaf7;
  --paper-2: #f1f0eb;
  --paper-3: #e8e6df;
  --line: #e0ddd5;
  --line-strong: #c9c5ba;
  --text: #0a0d12;
  --text-2: #3f4550;
  --text-3: #5f6571;
  --on-ink: #f4f3ef;
  --on-ink-2: #b5b9c2;
  --on-ink-3: #8b91a0;
  --accent: #ff5b1f;
  --accent-hover: #ff7442;
  --accent-text: #b8390b;
  --accent-soft: #ffe7dc;
  --ok: #1f7a4d;
  --err: #b42318;

  --font-display: "Inter Tight", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --fs-display: clamp(2.75rem, 1.55rem + 4.4vw, 5.5rem);
  --fs-h1: clamp(2.35rem, 1.55rem + 3vw, 4.25rem);
  --fs-h2: clamp(1.9rem, 1.4rem + 1.9vw, 3.1rem);
  --fs-h3: clamp(1.25rem, 1.12rem + .5vw, 1.5rem);
  --fs-h4: 1.125rem;
  --fs-lede: clamp(1.125rem, 1.02rem + .45vw, 1.375rem);
  --fs-body: 1.0625rem;
  --fs-sm: .9375rem;
  --fs-xs: .8125rem;
  --fs-eyebrow: .75rem;

  --space-section: clamp(4.5rem, 3rem + 6vw, 9rem);
  --space-block: clamp(2.5rem, 2rem + 2vw, 4rem);
  --gutter: clamp(1.25rem, .8rem + 2vw, 2.5rem);
  --container: 80rem;
  --measure: 42rem;
  --radius: 6px;
  --radius-lg: 12px;
  --header-h: 72px;
  --shadow: 0 1px 2px rgba(10, 13, 18, .04), 0 8px 24px -8px rgba(10, 13, 18, .12);
  --shadow-lg: 0 2px 4px rgba(10, 13, 18, .04), 0 24px 48px -12px rgba(10, 13, 18, .22);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font-family: var(--font-body); font-size: var(--fs-body); line-height: 1.6;
  font-feature-settings: "ss01", "cv11"; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
h1, h2, h3, h4, h5 { font-family: var(--font-display); font-weight: 600; letter-spacing: -.02em; line-height: 1.1; margin: 0; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .18em; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 3px; border-radius: 2px; }
.section--ink :focus-visible, .hero--ink :focus-visible, .cta-band :focus-visible, .site-footer :focus-visible, .mega-feature:focus-visible { outline-color: var(--accent); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 16px; top: -64px; z-index: 100; background: var(--ink); color: var(--on-ink); padding: 12px 18px; border-radius: var(--radius); text-decoration: none; font-weight: 600; transition: top .15s; }
.skip-link:focus { top: 12px; }

/* ---------- layout ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: 56rem; }
.section { padding-block: var(--space-section); position: relative; }
.section--tight { padding-block: var(--space-block); }
.section--alt { background: var(--paper-2); }
.section--ink { background: var(--ink); color: var(--on-ink); }
.section--ink .muted, .section--ink .section-head p { color: var(--on-ink-2); }
.section--border { border-top: 1px solid var(--line); }
.section--ink.section--border { border-top-color: var(--ink-line); }
.grid { display: grid; gap: clamp(1.25rem, 1rem + 1vw, 2rem); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (min-width: 1181px) { .grid--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); } }
@media (max-width: 1024px) { .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 680px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 1rem + 4vw, 6rem); align-items: start; }
.split--even { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: center; }
.split--sticky > :first-child { position: sticky; top: calc(var(--header-h) + 32px); }
@media (max-width: 900px) { .split, .split--even { grid-template-columns: 1fr; } .split--sticky > :first-child { position: static; } }
.stack > * + * { margin-top: 1rem; }
.stack-lg > * + * { margin-top: 1.5rem; }
.muted { color: var(--text-2); }

/* ---------- type helpers ---------- */
.eyebrow { font-family: var(--font-mono); font-size: var(--fs-eyebrow); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-text); display: inline-flex; align-items: center; gap: .6rem; }
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--accent); flex: none; }
.section--ink .eyebrow, .hero--ink .eyebrow, .cta-band .eyebrow { color: var(--accent); }
.display { font-size: var(--fs-display); line-height: 1.0; letter-spacing: -.04em; font-weight: 600; }
.h1 { font-size: var(--fs-h1); line-height: 1.04; letter-spacing: -.035em; }
.h2 { font-size: var(--fs-h2); letter-spacing: -.03em; }
.h3 { font-size: var(--fs-h3); letter-spacing: -.015em; line-height: 1.25; }
.h4 { font-size: var(--fs-h4); letter-spacing: -.01em; line-height: 1.3; }
.lede { font-size: var(--fs-lede); line-height: 1.5; color: var(--text-2); max-width: 44rem; }
.section--ink .lede, .hero--ink .lede { color: var(--on-ink-2); }
.accent { color: var(--accent-text); }
.section--ink .accent { color: var(--accent); }
.mono { font-family: var(--font-mono); }
.small { font-size: var(--fs-sm); }
.xsmall { font-size: var(--fs-xs); }

.section-head { display: grid; gap: 1.1rem; max-width: 48rem; margin-bottom: var(--space-block); }
.section-head p { color: var(--text-2); font-size: var(--fs-lede); line-height: 1.5; }
.section-head--row { max-width: none; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 2rem; }
@media (max-width: 760px) { .section-head--row { grid-template-columns: 1fr; } }

/* ---------- buttons & links ---------- */
.btn { --bg: var(--ink); --fg: var(--on-ink); display: inline-flex; align-items: center; justify-content: center; gap: .55rem; min-height: 48px; padding: .75rem 1.3rem; border-radius: var(--radius); border: 1px solid transparent; background: var(--bg); color: var(--fg); font-weight: 600; font-size: .9875rem; letter-spacing: -.005em; text-decoration: none; cursor: pointer; transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease); white-space: nowrap; }
.btn:hover { --bg: #232a36; }
.btn:active { transform: translateY(1px); }
.btn--accent { --bg: var(--accent); --fg: var(--ink); }
.btn--accent:hover { --bg: var(--accent-hover); }
.btn--ghost { --bg: transparent; --fg: var(--text); border-color: var(--line-strong); }
.btn--ghost:hover { --bg: var(--paper-2); border-color: var(--text-3); }
.section--ink .btn--ghost, .hero--ink .btn--ghost, .cta-band .btn--ghost { --fg: var(--on-ink); border-color: #3a4356; }
.section--ink .btn--ghost:hover, .hero--ink .btn--ghost:hover, .cta-band .btn--ghost:hover { --bg: var(--ink-3); border-color: #56607a; }
.btn--sm { min-height: 40px; padding: .5rem 1rem; font-size: .9375rem; }
.btn .arrow, .link-arrow .arrow { transition: transform .25s var(--ease); flex: none; }
.btn:hover .arrow, .link-arrow:hover .arrow, .card-link:hover .arrow { transform: translateX(3px); }
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.link-arrow { display: inline-flex; align-items: center; gap: .45rem; font-weight: 600; text-decoration: none; color: var(--text); border-bottom: 1px solid transparent; padding-bottom: 1px; }
.link-arrow:hover { border-bottom-color: currentColor; }
.section--ink .link-arrow { color: var(--on-ink); }
.prose a, .footnote a, .text-link { color: var(--accent-text); text-decoration: underline; }
.section--ink .text-link { color: var(--accent); }

/* ---------- header / nav ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(250, 250, 247, .88); -webkit-backdrop-filter: saturate(160%) blur(14px); backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid transparent; transition: border-color .2s, background .2s; }
.site-header.is-scrolled, .site-header.is-open { border-bottom-color: var(--line); background: rgba(250, 250, 247, .96); }
.header-inner { height: var(--header-h); display: flex; align-items: center; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--text); flex: none; }
.brand-mark { width: 30px; height: 30px; }
.brand-word { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: -.035em; font-weight: 500; line-height: 1; }
.brand-word b { font-weight: 700; }
.primary-nav { flex: 1; }
.nav-list { list-style: none; display: flex; gap: .25rem; align-items: center; }
.nav-item { position: relative; }
.nav-link, .nav-trigger { display: inline-flex; align-items: center; gap: .35rem; height: 40px; padding: 0 .75rem; white-space: nowrap; border-radius: var(--radius); font-size: .9625rem; font-weight: 500; color: var(--text-2); text-decoration: none; background: none; border: 0; cursor: pointer; transition: color .15s, background .15s; }
.nav-link:hover, .nav-trigger:hover, .nav-trigger[aria-expanded="true"], .nav-link[aria-current="page"], .nav-trigger.is-current { color: var(--text); background: var(--paper-2); }
.nav-trigger .chev { transition: transform .2s var(--ease); }
.nav-trigger[aria-expanded="true"] .chev { transform: rotate(180deg); }
.header-actions { display: flex; align-items: center; gap: .5rem; flex: none; margin-left: auto; }
.mega { position: absolute; left: -1rem; top: calc(100% + 12px); width: min(760px, 92vw); background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 1.25rem; display: grid; grid-template-columns: 1.6fr 1fr; gap: 1.25rem; opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .18s var(--ease), transform .18s var(--ease), visibility 0s linear .18s; }
.mega--single { grid-template-columns: 1fr; width: min(420px, 92vw); }
.nav-item.is-open > .mega { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.mega--groups { width: min(860px, 94vw); grid-template-columns: 1fr 1fr; }
.mega-group-title { font-family: var(--font-mono); font-size: var(--fs-eyebrow); letter-spacing: .12em; text-transform: uppercase; margin: .25rem .75rem .5rem; }
.mega-group-title a { color: var(--accent-text); text-decoration: none; }
.mega-group-title a:hover { text-decoration: underline; }
.mega-links { list-style: none; display: grid; gap: .15rem; }
.mega-links--2col { grid-template-columns: 1fr 1fr; }
.mega-link { display: grid; grid-template-columns: 36px 1fr; gap: .8rem; padding: .7rem .75rem; border-radius: 8px; text-decoration: none; color: var(--text); transition: background .15s; }
.mega-link:hover, .mega-link:focus-visible { background: var(--paper-2); }
.mega-link .ico { width: 36px; height: 36px; border-radius: 8px; background: var(--paper-2); display: grid; place-items: center; color: var(--ink); border: 1px solid var(--line); }
.mega-link:hover .ico { background: var(--accent-soft); border-color: #ffc8b1; color: var(--accent-text); }
.mega-link strong { display: block; font-size: .95rem; font-weight: 600; line-height: 1.3; }
.mega-link span { display: block; font-size: .85rem; color: var(--text-3); line-height: 1.4; margin-top: 2px; }
.mega-feature { background: var(--ink); color: var(--on-ink); border-radius: 10px; padding: 1.25rem; display: flex; flex-direction: column; gap: .75rem; text-decoration: none; position: relative; overflow: hidden; }
.mega-feature .eyebrow { color: var(--accent); }
.mega-feature strong { font-family: var(--font-display); font-size: 1.15rem; line-height: 1.25; letter-spacing: -.015em; }
.mega-feature p { color: var(--on-ink-2); font-size: .9rem; line-height: 1.5; }
.mega-feature .link-arrow { color: var(--on-ink); margin-top: auto; font-size: .9rem; }
.menu-toggle { display: none; width: 44px; height: 44px; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; align-items: center; justify-content: center; cursor: pointer; }
.menu-toggle .bars, .menu-toggle .bars::before, .menu-toggle .bars::after { display: block; width: 18px; height: 1.5px; background: var(--ink); position: relative; transition: transform .2s var(--ease), background .2s; }
.menu-toggle .bars::before, .menu-toggle .bars::after { content: ""; position: absolute; left: 0; }
.menu-toggle .bars::before { top: -6px; }
.menu-toggle .bars::after { top: 6px; }
.menu-toggle[aria-expanded="true"] .bars { background: transparent; }
.menu-toggle[aria-expanded="true"] .bars::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bars::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1240px) { .header-actions .btn--ghost { display: none; } }
@media (max-width: 1099px) {
  .menu-toggle { display: inline-flex; }
  .primary-nav { position: fixed; inset: var(--header-h) 0 0 0; background: var(--paper); overflow-y: auto; padding: 1rem var(--gutter) 3rem; display: none; border-top: 1px solid var(--line); }
  .site-header.is-open .primary-nav { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-item { border-bottom: 1px solid var(--line); }
  .nav-link, .nav-trigger { width: 100%; height: 60px; justify-content: space-between; font-size: 1.1rem; color: var(--text); padding: 0 .25rem; }
  .nav-link:hover, .nav-trigger:hover, .nav-trigger[aria-expanded="true"], .nav-link[aria-current="page"], .nav-trigger.is-current { background: none; }
  .mega { position: static; width: auto; box-shadow: none; border: 0; padding: 0 0 1rem; display: none; opacity: 1; visibility: visible; transform: none; grid-template-columns: 1fr; }
  .nav-item.is-open > .mega { display: grid; }
  .mega-links--2col, .mega--groups { grid-template-columns: 1fr; }
  .mega-feature { display: none; }
  .mobile-only { display: block; }
  body.nav-locked { overflow: hidden; }
}
@media (min-width: 1100px) { .mobile-only { display: none; } }
@media (max-width: 480px) { .header-actions .btn--accent { display: none; } }

/* ---------- hero ---------- */
.hero { padding-top: clamp(3rem, 2rem + 5vw, 7rem); padding-bottom: clamp(3.5rem, 2rem + 5vw, 7rem); position: relative; overflow: hidden; }
.hero--home { padding-top: clamp(3.5rem, 2rem + 6vw, 8rem); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .9fr); gap: clamp(2rem, 1rem + 4vw, 5rem); align-items: center; }
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; } }
.hero .display, .hero .h1 { margin-top: 1.25rem; }
.hero .lede { margin-top: 1.5rem; }
.hero .btn-row { margin-top: 2.25rem; }
.hero-meta { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: .5rem 1.75rem; color: var(--text-3); font-size: var(--fs-sm); }
.hero-meta li { list-style: none; display: inline-flex; gap: .5rem; align-items: center; }
.hero-meta svg { color: var(--accent-text); }
.hero--ink { background: var(--ink); color: var(--on-ink); }
.hero--ink .hero-meta { color: var(--on-ink-3); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 64px 64px; mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 20%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 20%, transparent 75%); opacity: .55; }
.hero--ink .hero-bg { background-image: linear-gradient(var(--ink-line) 1px, transparent 1px), linear-gradient(90deg, var(--ink-line) 1px, transparent 1px); opacity: .5; }
.hero > .container { position: relative; }
.pill { display: inline-flex; align-items: center; gap: .6rem; padding: .35rem .5rem .35rem .4rem; border: 1px solid var(--line); background: #fff; border-radius: 999px; font-size: .85rem; color: var(--text-2); text-decoration: none; transition: border-color .15s; }
.pill:hover { border-color: var(--line-strong); }
.pill .tag { background: var(--ink); color: var(--on-ink); border-radius: 999px; padding: .15rem .55rem; font-size: .72rem; font-family: var(--font-mono); letter-spacing: .06em; text-transform: uppercase; }
.breadcrumbs { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; font-size: var(--fs-sm); color: var(--text-3); }
.breadcrumbs li + li::before { content: "/"; margin-right: .4rem; color: var(--line-strong); }
.breadcrumbs a { color: var(--text-3); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); text-decoration: underline; }
.hero--ink .breadcrumbs, .hero--ink .breadcrumbs a { color: var(--on-ink-3); }
.hero--ink .breadcrumbs a:hover { color: var(--on-ink); }
.hero .breadcrumbs + .eyebrow { margin-top: 2rem; }

/* hero visual: placement diagram */
.schematic { width: 100%; border-radius: var(--radius-lg); background: var(--ink); border: 1px solid var(--ink-line); box-shadow: var(--shadow-lg); overflow: hidden; }
.schematic svg { width: 100%; height: auto; }
.schematic .flow { stroke-dasharray: 4 8; }
@media (prefers-reduced-motion: no-preference) {
  .schematic .flow { animation: flow 2.8s linear 3; }
}
@keyframes flow { to { stroke-dashoffset: -48; } }

/* ---------- cards ---------- */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.4rem, 1.1rem + 1vw, 2rem); display: flex; flex-direction: column; gap: .9rem; position: relative; transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease); }
.card p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.6; }
.card .card-foot { margin-top: auto; padding-top: .5rem; }
a.card, .card-link { text-decoration: none; color: inherit; }
a.card:hover, .card--hover:hover { border-color: var(--line-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.card .ico { width: 44px; height: 44px; border-radius: 10px; background: var(--paper-2); border: 1px solid var(--line); display: grid; place-items: center; color: var(--ink); }
a.card:hover .ico { background: var(--accent-soft); border-color: #ffc8b1; color: var(--accent-text); }
.card .index { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-3); letter-spacing: .08em; }
.card--ink { background: var(--ink-2); border-color: var(--ink-line); color: var(--on-ink); }
.card--ink p { color: var(--on-ink-2); }
.card--ink .ico { background: var(--ink-3); border-color: var(--ink-line); color: var(--accent); }
.card--ink .index { color: var(--on-ink-3); }
a.card--ink:hover { border-color: #3a4356; box-shadow: none; }
.card--flat { background: transparent; border: 0; border-top: 1px solid var(--line); border-radius: 0; padding: 1.5rem 0 0; }
.section--ink .card--flat { border-top-color: var(--ink-line); }
.section--ink .card--flat p { color: var(--on-ink-2); }
.tick-list { list-style: none; display: grid; gap: .6rem; }
.tick-list li { display: grid; grid-template-columns: 20px 1fr; gap: .6rem; font-size: var(--fs-sm); color: var(--text-2); line-height: 1.5; }
.tick-list li::before { content: ""; width: 14px; height: 14px; margin-top: .25rem; border-radius: 3px; background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M3.5 7.2l2.2 2.2 4.8-4.8' fill='none' stroke='%23b8390b' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; }
.section--ink .tick-list li, .card--ink .tick-list li { color: var(--on-ink-2); }
.section--ink .tick-list li::before, .card--ink .tick-list li::before { background-color: rgba(255, 91, 31, .16); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M3.5 7.2l2.2 2.2 4.8-4.8' fill='none' stroke='%23ff7442' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; }
.chip { font-size: .8rem; padding: .25rem .6rem; border: 1px solid var(--line); border-radius: 999px; color: var(--text-2); background: #fff; }
.section--ink .chip, .card--ink .chip { background: transparent; border-color: var(--ink-line); color: var(--on-ink-2); }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.stats--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stat { padding: 2rem 1.5rem 0 0; display: grid; gap: .5rem; align-content: start; }
.stat + .stat { padding-left: 1.5rem; border-left: 1px solid var(--line); }
.stat-value { font-family: var(--font-display); font-size: clamp(2.25rem, 1.7rem + 2vw, 3.5rem); font-weight: 600; letter-spacing: -.04em; line-height: 1; }
.stat-value .unit { color: var(--accent-text); }
.stat-label { font-size: var(--fs-sm); color: var(--text-2); line-height: 1.45; max-width: 18rem; }
.stat-source { font-size: var(--fs-xs); color: var(--text-3); }
.section--ink .stats, .section--ink .stat + .stat { border-color: var(--ink-line); }
.section--ink .stat-label { color: var(--on-ink-2); }
.section--ink .stat-source { color: var(--on-ink-3); }
.section--ink .stat-value .unit { color: var(--accent); }
@media (max-width: 900px) { .stats, .stats--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .stat:nth-child(odd) { padding-left: 0; border-left: 0; } .stat { padding-bottom: 1.5rem; } }
@media (max-width: 520px) { .stats, .stats--3 { grid-template-columns: 1fr; } .stat + .stat { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); } .section--ink .stat + .stat { border-top-color: var(--ink-line); } }

/* ---------- timeline ---------- */
.timeline { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: wk; position: relative; }
.timeline::before { content: ""; position: absolute; left: 0; right: 0; top: 19px; height: 2px; background: var(--line); }
.tl-step { position: relative; padding-right: 1.25rem; display: grid; gap: .6rem; align-content: start; }
.tl-dot { width: 40px; height: 40px; border-radius: 50%; background: var(--paper); border: 2px solid var(--ink); display: grid; place-items: center; font-family: var(--font-mono); font-size: .8rem; font-weight: 500; position: relative; z-index: 1; }
.tl-step:last-child .tl-dot { background: var(--accent); border-color: var(--accent); color: var(--ink); }
.tl-step .wk { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--accent-text); letter-spacing: .1em; text-transform: uppercase; margin-top: .5rem; }
.tl-step strong { font-family: var(--font-display); font-size: 1.05rem; line-height: 1.3; letter-spacing: -.01em; }
.tl-step p { font-size: .9rem; color: var(--text-2); line-height: 1.5; }
.section--alt .tl-dot { background: var(--paper-2); }
.section--ink .timeline::before { background: var(--ink-line); }
.section--ink .tl-dot { background: var(--ink); border-color: var(--on-ink); }
.section--ink .tl-step:last-child .tl-dot { background: var(--accent); border-color: var(--accent); }
.section--ink .tl-step p { color: var(--on-ink-2); }
.section--ink .tl-step .wk { color: var(--accent); }
@media (max-width: 980px) {
  .timeline { grid-template-columns: 1fr; gap: 1.75rem; }
  .timeline::before { left: 19px; right: auto; top: 0; bottom: 0; width: 2px; height: auto; }
  .tl-step { grid-template-columns: 40px 1fr; column-gap: 1.25rem; padding-right: 0; }
  .tl-step > :not(.tl-dot) { grid-column: 2; }
  .tl-step .tl-dot { grid-row: 1 / span 3; }
  .tl-step .wk { margin-top: .6rem; }
}

/* ---------- statement / quote ---------- */
.statement { font-family: var(--font-display); font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.75rem); line-height: 1.2; letter-spacing: -.03em; font-weight: 500; max-width: 60rem; text-wrap: balance; }
.statement em { font-style: normal; color: var(--accent-text); }
.section--ink .statement em { color: var(--accent); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; padding: 1.4rem 0; font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; letter-spacing: -.01em; line-height: 1.35; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line-strong); background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 28 28'%3E%3Cpath d='M9 14h10M14 9v10' stroke='%230a0d12' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E") center/28px no-repeat; transition: transform .2s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer { padding: 0 3.5rem 1.6rem 0; color: var(--text-2); max-width: 48rem; }
.faq .answer p + p { margin-top: .8rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--ink); color: var(--on-ink); border-radius: var(--radius-lg); padding: clamp(2.5rem, 1.5rem + 4vw, 5rem); display: grid; grid-template-columns: minmax(0, 1.4fr) auto; gap: 2.5rem; align-items: end; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--ink-line) 1px, transparent 1px), linear-gradient(90deg, var(--ink-line) 1px, transparent 1px); background-size: 48px 48px; mask-image: radial-gradient(ellipse 60% 90% at 100% 100%, #000, transparent 70%); -webkit-mask-image: radial-gradient(ellipse 60% 90% at 100% 100%, #000, transparent 70%); opacity: .7; }
.cta-band > * { position: relative; }
.cta-band h2 { font-size: var(--fs-h2); letter-spacing: -.03em; margin-top: 1rem; }
.cta-band p { color: var(--on-ink-2); margin-top: 1rem; max-width: 36rem; font-size: var(--fs-lede); line-height: 1.5; }
@media (max-width: 860px) { .cta-band { grid-template-columns: 1fr; align-items: start; } }

/* ---------- article / prose ---------- */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 16rem; gap: clamp(2rem, 1rem + 4vw, 6rem); align-items: start; }
@media (max-width: 1000px) { .article-layout { grid-template-columns: 1fr; } .toc { display: none; } }
.prose { max-width: var(--measure); font-size: 1.09rem; line-height: 1.72; color: #22272f; }
.prose > * + * { margin-top: 1.25em; }
.prose h2 { font-size: clamp(1.5rem, 1.3rem + .8vw, 2rem); margin-top: 2.4em; letter-spacing: -.025em; color: var(--text); }
.prose h3 { font-size: 1.25rem; margin-top: 2em; letter-spacing: -.015em; color: var(--text); }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .5em; }
.prose li::marker { color: var(--accent-text); }
.prose blockquote { margin: 2em 0; padding: .25em 0 .25em 1.5em; border-left: 3px solid var(--accent); font-family: var(--font-display); font-size: 1.3rem; line-height: 1.45; letter-spacing: -.015em; color: var(--text); }
.prose table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.prose th, .prose td { text-align: left; padding: .7rem .8rem .7rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-family: var(--font-display); font-weight: 600; color: var(--text); border-bottom-color: var(--line-strong); }
.prose .callout { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.25rem; font-size: .98rem; }
.prose .sources { font-size: .9rem; color: var(--text-2); }
.prose .sources li { word-break: break-word; }
.table-wrap { overflow-x: auto; }
.toc { position: sticky; top: calc(var(--header-h) + 32px); border-left: 1px solid var(--line); padding-left: 1.25rem; font-size: var(--fs-sm); }
.toc h2 { font-family: var(--font-mono); font-size: var(--fs-xs); font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); margin-bottom: 1rem; }
.toc ol { list-style: none; display: grid; gap: .55rem; }
.toc a { color: var(--text-2); text-decoration: none; line-height: 1.4; display: block; }
.toc a:hover, .toc a.is-active { color: var(--text); }
.toc a.is-active { box-shadow: -1.3rem 0 0 -1.2rem var(--accent); }
.article-meta { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; font-size: var(--fs-sm); color: var(--text-3); margin-top: 1.75rem; list-style: none; }
.article-meta li + li::before { content: "·"; margin-right: 1.25rem; }
.legal-updated { font-size: var(--fs-sm); color: var(--text-3); }

/* ---------- forms ---------- */
.form { display: grid; gap: 1.1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }
.field { display: grid; gap: .45rem; }
.field label { font-size: .9rem; font-weight: 600; }
.field label .opt { font-weight: 400; color: var(--text-3); }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: .7rem .85rem; border: 1px solid #8a8578; border-radius: var(--radius); background: #fff; font-size: 1rem; transition: border-color .15s, box-shadow .15s; }
.field textarea { min-height: 9rem; resize: vertical; line-height: 1.5; }
.field select { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5l3 3 3-3' fill='none' stroke='%235f6571' stroke-width='1.5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .85rem center; background-size: 12px; padding-right: 2.25rem; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--text-3); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(255, 91, 31, .25); }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"], .field select[aria-invalid="true"] { border-color: var(--err); border-width: 2px; }
.field-error { font-size: .85rem; color: var(--err); font-weight: 600; display: flex; gap: .35rem; align-items: center; }
.field-error::before { content: "!"; display: inline-grid; place-items: center; width: 16px; height: 16px; border-radius: 50%; background: var(--err); color: #fff; font-size: .7rem; flex: none; }
.check { border-color: #8a8578; }
.field .hint { font-size: .82rem; color: var(--text-3); }
.checks { border: 0; padding: 0; margin: 0; min-width: 0; }
.checks legend { font-size: .9rem; font-weight: 600; padding: 0; margin-bottom: .45rem; }
.checks legend .opt { font-weight: 400; color: var(--text-3); }
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
@media (max-width: 640px) { .check-grid { grid-template-columns: 1fr; } }
.check { display: flex; gap: .6rem; align-items: center; padding: .65rem .8rem; border: 1px solid var(--line-strong); border-radius: var(--radius); background: #fff; cursor: pointer; font-size: .93rem; transition: border-color .15s, background .15s; }
.check:hover { border-color: var(--text-3); }
.check input { width: 18px; height: 18px; accent-color: var(--accent); flex: none; margin: 0; }
.check:has(input:checked) { border-color: var(--ink); background: var(--accent-soft); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-note { font-size: .84rem; color: var(--text-3); line-height: 1.5; }
.form-status { font-size: .95rem; padding: .9rem 1rem; border-radius: var(--radius); display: none; }
.form-status.is-error { display: block; background: #fdecea; color: var(--err); border: 1px solid #f5c2bd; }
.form-status.is-ok { display: block; background: #e8f5ee; color: var(--ok); border: 1px solid #b7dfc8; }
.contact-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.5rem, 1rem + 2vw, 2.5rem); box-shadow: var(--shadow); }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--on-ink-2); padding-top: clamp(4rem, 3rem + 4vw, 6.5rem); font-size: var(--fs-sm); }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.5fr) repeat(5, minmax(0, 1fr)); gap: 2.5rem; padding-bottom: 4rem; border-bottom: 1px solid var(--ink-line); }
.footer-brand .brand { color: var(--on-ink); }
.footer-brand p { margin-top: 1.25rem; max-width: 22rem; line-height: 1.6; }
.footer-brand .btn-row { margin-top: 1.75rem; }
.site-footer .btn--ghost { --fg: var(--on-ink); border-color: #3a4356; }
.site-footer .btn--ghost:hover { --bg: var(--ink-3); border-color: #56607a; }
.footer-contact { list-style: none; display: grid; gap: .5rem; margin-top: 1.25rem; }
.footer-contact a { display: inline-flex; gap: .55rem; align-items: center; color: var(--on-ink); text-decoration: none; }
.footer-contact a:hover { text-decoration: underline; }
.footer-contact svg { color: var(--accent); }
.contact-lines { list-style: none; display: grid; gap: .6rem; }
.contact-lines a { display: inline-flex; gap: .65rem; align-items: center; color: var(--text); text-decoration: none; font-weight: 600; font-size: 1.05rem; }
.contact-lines a:hover span { text-decoration: underline; }
.contact-lines svg { color: var(--accent-text); flex: none; }
.footer-col h2 { font-family: var(--font-mono); font-size: var(--fs-xs); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--on-ink-3); margin-bottom: 1.1rem; }
.footer-col ul { list-style: none; display: grid; gap: .7rem; }
.footer-col a { color: var(--on-ink-2); text-decoration: none; }
.footer-col a:hover { color: var(--on-ink); text-decoration: underline; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: center; padding-block: 1.75rem 2.25rem; color: var(--on-ink-3); font-size: var(--fs-xs); }
.footer-legal { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.footer-legal a { color: var(--on-ink-3); text-decoration: none; }
.footer-legal a:hover { color: var(--on-ink); text-decoration: underline; }
@media (max-width: 1100px) { .footer-top { grid-template-columns: repeat(3, minmax(0, 1fr)); } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 700px) { .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 420px) { .footer-top { grid-template-columns: 1fr; } }

/* ---------- misc ---------- */
.divider { height: 1px; background: var(--line); border: 0; margin: 0; }
.num-list { list-style: none; counter-reset: n; display: grid; gap: 0; border-top: 1px solid var(--line); }
.num-list > li { counter-increment: n; display: grid; grid-template-columns: 4rem minmax(0, 1fr) minmax(0, 1.4fr); gap: 1.5rem; padding: 1.75rem 0; border-bottom: 1px solid var(--line); align-items: start; }
.num-list > li::before { content: counter(n, decimal-leading-zero); font-family: var(--font-mono); font-size: .85rem; color: var(--accent-text); padding-top: .3rem; }
.num-list h3 { font-size: 1.25rem; letter-spacing: -.015em; line-height: 1.3; }
.num-list p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.6; }
.section--ink .num-list, .section--ink .num-list > li { border-color: var(--ink-line); }
.section--ink .num-list > li::before { color: var(--accent); }
.section--ink .num-list p { color: var(--on-ink-2); }
@media (max-width: 760px) { .num-list > li { grid-template-columns: 2.5rem 1fr; } .num-list > li > p { grid-column: 2; } }
.compare { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.compare th, .compare td { padding: 1rem 1.1rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; line-height: 1.5; }
.compare thead th { background: var(--paper-2); font-family: var(--font-display); font-size: .95rem; }
.compare thead th.is-us { background: var(--ink); color: var(--on-ink); }
.compare td.is-us { background: #fffaf7; color: var(--text); font-weight: 500; }
.compare tbody th { font-weight: 600; color: var(--text); width: 22%; }
.compare td { color: var(--text-2); }
.compare tr:last-child > * { border-bottom: 0; }
.footnote { font-size: var(--fs-xs); color: var(--text-3); line-height: 1.5; margin-top: 1.5rem; max-width: 52rem; }
.section--ink .footnote { color: var(--on-ink-3); }
.error-page { min-height: 60vh; display: grid; align-content: center; }
.error-code { font-family: var(--font-mono); color: var(--accent-text); letter-spacing: .1em; }

/* ---------- facts panel / problem stats ---------- */
.problem-stats { margin-top: var(--space-block); }
.prose code { font-family: var(--font-mono); font-size: .88em; background: var(--paper-2); padding: .1em .35em; border-radius: 4px; }
.prose sup a { text-decoration: none; font-size: .75em; margin-left: 1px; }
.cf-turnstile { min-height: 65px; }

/* ---------- reveal on scroll ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal.pre { opacity: 0; transform: translateY(14px); }
  .reveal.pre.is-visible { opacity: 1; transform: none; transition: opacity .7s var(--ease), transform .7s var(--ease); }
}

/* ---------- print ---------- */
@media print {
  .site-header, .site-footer, .cta-band, .skip-link, .toc { display: none !important; }
  body { background: #fff; }
  .section { padding-block: 1.5rem; }
  .section--ink, .hero--ink { background: #fff; color: #000; }
}