:root {
  --paper: #f3f1ec;
  --ink: #171d24;
  --blue: #2c5fa8;
  --blue-dark: #204a83;
  --line: #b9b7b0;
  --muted: #5e6367;
  --white: #fff;
  --soft: #e8e5de;
  --max: 1180px;
  --measure: 760px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.65 var(--sans); }
img { display: block; max-width: 100%; height: auto; }
svg { max-width: 100%; }
a { color: var(--blue-dark); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--blue); }
a:focus-visible, summary:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; border-radius: 2px; }
h1, h2, h3, h4, .big, .bignum, .amt, .price { font-family: var(--serif); font-weight: 400; letter-spacing: -.025em; }
h1 { max-width: 970px; margin: .25em 0 .38em; font-size: clamp(2.85rem, 7vw, 6.6rem); line-height: .96; }
h2 { max-width: 900px; margin: 0 0 .42em; font-size: clamp(2.1rem, 4.6vw, 4.35rem); line-height: 1.02; }
h3 { margin: 0 0 .45em; font-size: clamp(1.35rem, 2.4vw, 2rem); line-height: 1.15; }
p, li { max-width: var(--measure); }
p { margin: 0 0 1.05em; }
main [id] { scroll-margin-top: 100px; }
ul, ol { padding-left: 1.25rem; }
li + li { margin-top: .52em; }
blockquote { margin: 2rem 0; padding: 1rem 0 1rem 1.5rem; border-left: 4px solid var(--blue); font: 1.25rem/1.5 var(--serif); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }
pre { max-width: 100%; overflow-x: auto; padding: 1rem; border: 1px solid var(--line); background: var(--ink); color: var(--paper); font-size: .78rem; }
code { overflow-wrap: anywhere; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 18px; z-index: 100; padding: .7rem 1rem; background: var(--white); color: var(--ink); }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 40; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--paper) 94%, transparent); backdrop-filter: blur(12px); }
.site-nav { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { color: var(--ink); font-weight: 850; letter-spacing: -.04em; text-decoration: none; white-space: nowrap; }
.brand span { color: var(--blue); }
.nav-menu { display: flex; align-items: center; justify-content: flex-end; gap: clamp(.85rem, 2vw, 1.65rem); font-size: .85rem; }
.nav-menu > a:not(.button) { color: var(--ink); text-decoration: none; }
.nav-disclosure { display: none; position: relative; }
.nav-disclosure, .nav-disclosure:last-child { padding: 0; border: 0; }
.nav-disclosure summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; font: 750 .82rem/1 var(--sans); list-style: none; }
.nav-disclosure summary::-webkit-details-marker { display: none; }
.nav-disclosure > div { position: absolute; right: 0; top: calc(100% + 1rem); width: min(86vw, 320px); padding: 1rem; display: grid; gap: .2rem; border: 1px solid var(--ink); background: var(--paper); box-shadow: 7px 7px 0 var(--blue); }
.nav-disclosure a { padding: .65rem; color: var(--ink); text-decoration: none; }
.button, .btn { min-height: 48px; padding: .72rem 1.05rem; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--ink); background: transparent; color: var(--ink); font-size: .9rem; font-weight: 760; text-align: center; text-decoration: none; }
.button.primary, .btn:not(.ghost):not(.outline):not(.secondary) { border-color: var(--blue); background: var(--blue); color: var(--white); }
.button:hover, .btn:hover { border-color: var(--ink); background: var(--ink); color: var(--white); }

main > header.hero, main > .hero { min-height: 58vh; padding: clamp(4.5rem, 9vw, 8.5rem) 0; display: grid; align-content: center; border-bottom: 1px solid var(--line); }
main > header:not(.site-header) { padding: clamp(4.5rem, 8vw, 7rem) 0; }
main > header.hero > .wrap, main > .hero > .wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.hero .inner { max-width: 1020px; }
.hero .lead, .lead { max-width: 790px; font-size: clamp(1.08rem, 1.6vw, 1.32rem); color: #3f464c; }
.kicker, .flag, .badge, .st, .cap, .tag, .mk, .eyebrow { display: block; margin-bottom: 1rem; color: var(--blue); font: 760 .73rem/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; }
.em { color: var(--blue); }
.sub { color: var(--muted); font-size: 1.05rem; }
.cite, .note, .pfine, .formnote, .qualification { color: var(--muted); font-size: .84rem; }
.ctas, .fctas, .actions, .offer-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

main > section, main > article, main > .light, main > .soft, main > .dark { padding: clamp(4.5rem, 8vw, 7rem) 0; border-bottom: 1px solid var(--line); }
main > section > .wrap, main > article > .wrap, main > .light > .wrap, main > .soft > .wrap, main > .dark > .wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
section.soft, .soft { background: var(--soft); }
section.light, .light { background: var(--white); }
section.dark, .dark-block, .ticket { background: var(--ink); color: var(--paper); }
.dark-block, .ticket { margin-block: 2rem; padding: clamp(1.5rem, 4vw, 3.5rem); box-shadow: 9px 9px 0 var(--blue); }
.dark-block a, .ticket a { color: #d9e8ff; }
.dark-block .lead, .dark-block .sub, .dark-block .note, .dark-block .cite, .dark-block .kicker,
.dark .lead, .dark .sub, .dark .note, .dark .cite, .dark .kicker,
.ticket .lead, .ticket .sub, .ticket .note, .ticket .cite, .ticket .kicker { color: #d6dbe0; }
.dark-block a:focus-visible, .dark a:focus-visible, .ticket a:focus-visible { outline-color: #a9c9f5; }

.sw, .needs, .doors, .principles, .tiers, .fgrid, .three, .facts, .pair, .split, .hp, .offer, .work-grid, .rows, .top, .flex { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; border: 1px solid var(--line); background: var(--line); }
.sw > *, .needs > *, .doors > *, .principles > *, .tiers > *, .fgrid > *, .three > *, .facts > *, .pair > *, .split > *, .hp > *, .offer > *, .work-grid > *, .rows > *, .top > *, .flex > * { min-width: 0; padding: clamp(1.25rem, 3vw, 2.5rem); background: var(--paper); }
.card, .opt, .tier, .lever, .door, .site, .entry, .panel, .p, .d, .you, .here, .fig { padding: clamp(1.25rem, 3vw, 2.25rem); border: 1px solid var(--line); background: color-mix(in srgb, var(--white) 50%, transparent); }
.card + .card, .opt + .opt, .tier + .tier { margin-top: 1rem; }
.steps, .ledger, .ladder, .list, .levers, .snaps, .shots { margin-top: 2.25rem; border-top: 1px solid var(--line); }
.step, .lrow, .row, .r, .q { padding: 1.3rem 0; border-bottom: 1px solid var(--line); }
.step, .lrow, .row { display: grid; grid-template-columns: minmax(150px, .7fr) minmax(0, 1.5fr); gap: 2rem; }
.n, .asknum, .pnum { color: var(--blue); font: 400 2.2rem/1 var(--serif); }
.bignum, .big, .amt, .price { font-size: clamp(2.4rem, 6vw, 5.8rem); line-height: .9; color: var(--blue); }
.pricebar, .pbar, .meta, .lhead, .lfoot, .pfoot { margin-top: 2rem; padding: 1.25rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.towns { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.25rem 0; }
.towns > * { padding: .4rem .65rem; border: 1px solid var(--line); }

details { padding: 1.15rem 0; border-top: 1px solid var(--line); }
details:last-child { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font: 400 clamp(1.08rem, 2vw, 1.4rem)/1.35 var(--serif); }
details p { margin: .9rem 0 0 1.25rem; color: var(--muted); }
table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: .92rem; }
th, td { padding: .85rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--ink); color: var(--paper); }

.shot img, .pic img, .site img, .work-shot img { width: 100%; object-fit: cover; border: 1px solid var(--line); }
.shots, .work-grid { overflow: hidden; }
.shots > *, .work-grid > * { margin: 0; }
.morelink { display: inline-flex; margin-top: 1.5rem; font-weight: 750; }

/* The case-study record is dense evidence; keep its labels and rows legible. */
.result { max-width: 1050px; font-size: clamp(2.7rem, 5vw, 3.75rem); }
.bigs.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bigs .big { font: inherit; letter-spacing: normal; color: var(--ink); }
.bigs .lab, .bigs .rate { display: block; color: var(--muted); font: 750 .73rem/1.45 var(--sans); letter-spacing: .04em; }
.bigs .n { display: block; margin: 1rem 0; color: var(--blue); font: 400 clamp(2.75rem, 5vw, 4.5rem)/.88 var(--serif); letter-spacing: -.05em; }
.bigs .n em { font-style: normal; }
.bigs .n small { margin-left: .25rem; font: 700 .72rem/1 var(--sans); letter-spacing: 0; }
.record .snaps, .record .rows { display: block; border: 0; background: transparent; }
.record .panel { margin-top: 1.25rem; }
.record summary span { display: block; margin-top: .25rem; color: var(--muted); font: 400 .875rem/1.5 var(--sans); }
.record .pbar b, .record .pbar > span { display: block; }
.record .pbar > span { margin-top: .25rem; color: var(--muted); font-size: .875rem; }
.record .pnum { display: flex; flex-wrap: wrap; align-items: baseline; gap: .75rem; }
.record .pnum > span:not(.big) { color: var(--muted); font: 400 .875rem/1.5 var(--sans); }
.record .row { grid-template-columns: 38px minmax(0, 1fr) minmax(74px, auto); align-items: baseline; padding: .75rem 0; background: transparent; }
.record .q, .record .r { padding: 0; border: 0; }
.record .r { color: var(--blue-dark); font-size: .78rem; font-weight: 780; text-align: right; }
.record .pnum .big { color: var(--blue); font-size: clamp(2.2rem, 5vw, 4rem); }

.form-shell, .formcard { max-width: 900px; margin-top: 2rem; padding: clamp(1.25rem, 4vw, 3rem); border: 1px solid var(--line); background: var(--white); }
.preview-note { margin: 0 0 2rem; padding: 1.25rem; border-left: 4px solid var(--blue); background: #e7edf6; }
.preview-note strong { font-family: var(--serif); font-size: 1.3rem; }
.preview-note p { margin: .25rem 0 1rem; }
.publication-note { margin-top: 2rem; padding: 1.1rem 1.25rem; border: 1px solid var(--blue); background: #e7edf6; }
.publication-note strong { font-family: var(--serif); font-size: 1.2rem; }
.publication-note p { margin: .2rem 0 0; }
.field { margin: 1rem 0; }
label { display: block; margin-bottom: .35rem; font-weight: 700; }
input, textarea, select { width: 100%; min-height: 46px; padding: .7rem; border: 1px solid var(--line); background: var(--soft); color: var(--muted); font: inherit; }
textarea { min-height: 120px; }
.consent { font-size: .84rem; color: var(--muted); }
.hp[aria-hidden="true"] { display: none !important; }

.site-footer { padding: clamp(3.5rem, 6vw, 5.5rem) 0 2rem; background: var(--ink); color: var(--paper); }
.site-footer a { color: #d9e8ff; }
.site-footer .brand { color: var(--paper); }
.site-footer .brand span { color: #a9c9f5; }
.site-footer a:focus-visible { outline-color: #a9c9f5; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .8fr .8fr 1fr; gap: 2.5rem; }
.footer-links { display: grid; align-content: start; gap: .55rem; font-size: .84rem; }
.footer-links strong { color: #9fb3ca; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.footer-cta p { font-family: var(--serif); font-size: 1.2rem; }
.footer-guard, .footer-meta { grid-column: 1 / -1; max-width: none; margin: 0; padding-top: 1.25rem; border-top: 1px solid #444b52; color: #b9bec3; font-size: .78rem; }
.footer-meta { padding-top: 0; border: 0; }

@media (max-width: 820px) {
  .wrap, main > header.hero > .wrap, main > .hero > .wrap, main > section > .wrap, main > article > .wrap, main > .light > .wrap, main > .soft > .wrap, main > .dark > .wrap { width: min(calc(100% - 30px), var(--max)); }
  .site-nav { gap: .55rem; }
  .nav-menu { display: contents; }
  .nav-menu > a:not(.button) { display: none; }
  .site-nav > .button, .nav-menu > .button { min-height: 42px; width: auto; padding: .55rem .68rem; font-size: .72rem; line-height: 1.15; }
  .nav-disclosure { display: block; }
  main > header.hero, main > .hero { min-height: 0; padding: 4rem 0; }
  main > header:not(.site-header) { padding: 4rem 0; }
  h1 { font-size: clamp(2.45rem, 10.5vw, 3rem); }
  .sw, .needs, .doors, .principles, .tiers, .fgrid, .three, .facts, .pair, .split, .hp, .offer, .work-grid, .rows, .top, .flex { grid-template-columns: 1fr; }
  .result { font-size: clamp(2.2rem, 9.5vw, 2.55rem); }
  .bigs.three { grid-template-columns: 1fr; }
  .record .row { grid-template-columns: 30px minmax(0, 1fr); gap: .35rem .65rem; }
  .record .r { grid-column: 2; text-align: left; }
  .step, .lrow, .row { grid-template-columns: 1fr; gap: .5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child, .footer-cta, .footer-guard, .footer-meta { grid-column: 1 / -1; }
  table { display: block; overflow-x: auto; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > * { grid-column: 1 !important; }
  .ctas, .fctas, .actions { display: grid; }
  .button, .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}