/* Side House Systems. Tokens first, then layout, mobile first.
   Motion: one world. Scroll drives the hero, the process, and the thesis. Everything else answers the hand. */

:root {
  --bg: #FAFAF8;
  --bg-alt: #F4F1EA;
  --ink: #1C1C1A;
  --ink-soft: #4A4845;
  --accent: #D9772F;
  --accent-deep: #9E5219;
  --accent-soft: rgba(217,119,47,.14);
  --rule: #E3DFD6;
  --card: #FFFFFF;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --fs-0: 0.75rem; --fs-1: 0.9375rem; --fs-2: 1.0625rem; --fs-3: 1.25rem; --fs-4: 1.75rem; --fs-5: 2.5rem;
  --s-1: 0.5rem; --s-2: 1rem; --s-3: 1.5rem; --s-4: 2rem; --s-5: 3rem; --s-6: 4rem; --s-7: 6rem;
  --radius: 10px;
  --wrap: 1120px;
  --measure: 68ch;
  --nav-h: 84px;
  --out: cubic-bezier(.23, 1, .32, 1);
  --inout: cubic-bezier(.77, 0, .175, 1);
  --t: 220ms;
  --p: 0; /* scroll progress, set by script on [data-scrub] */
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scrollbar-color: var(--accent) var(--bg-alt); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 var(--fs-2)/1.6 var(--sans); overflow-x: hidden; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .18em; text-decoration-thickness: 1px; }
button { font: inherit; color: inherit; cursor: pointer; touch-action: manipulation; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--accent); color: var(--ink); }
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--accent); border: 3px solid var(--bg-alt); border-radius: 8px; }

h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 500; letter-spacing: -0.015em; line-height: 1.08; text-wrap: balance; }
h1 { font-size: var(--fs-5); }
h2 { font-size: var(--fs-4); max-width: 22ch; margin-bottom: var(--s-3); }
h3 { font-family: var(--sans); font-weight: 600; font-size: var(--fs-3); line-height: 1.3; letter-spacing: 0; text-wrap: pretty; }
h1 em, h2 em { font-style: italic; color: var(--accent-deep); }
p { margin: 0 0 var(--s-2); max-width: var(--measure); text-wrap: pretty; }
.plain { list-style: none; padding: 0; margin: 0 0 var(--s-2); max-width: var(--measure); }
.plain li { padding: 0.45rem 0 0.45rem 1.25rem; position: relative; border-top: 1px solid var(--rule); }
.plain li::before { content: ""; position: absolute; left: 0; top: 1.05rem; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.plain li:last-child { border-bottom: 1px solid var(--rule); }

.wrap { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; }
.narrow { max-width: 720px; }
.eyebrow { font-size: var(--fs-0); font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: var(--s-2); }
.sub { color: var(--ink-soft); margin-top: calc(-1 * var(--s-2)); margin-bottom: var(--s-4); }
.lede { font-size: var(--fs-3); line-height: 1.5; margin: var(--s-3) 0 var(--s-4); }
.skip { position: absolute; left: 1rem; top: -4rem; background: var(--ink); color: var(--bg); padding: .6rem 1rem; z-index: 200; border-radius: var(--radius); }
.skip:focus { top: 1rem; }

/* Buttons: the ink rises up behind the label on hover */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 1.25rem; border-radius: var(--radius); font-weight: 600; text-decoration: none; border: 1.5px solid var(--ink); position: relative; overflow: hidden; isolation: isolate; transition: transform 160ms var(--out), color var(--t), border-color var(--t); will-change: transform; }
.btn--solid { background: var(--accent); border-color: var(--accent); color: var(--ink); }
.btn--solid::after { content: ""; position: absolute; inset: 0; background: var(--ink); clip-path: inset(100% 0 0 0); transition: clip-path 280ms var(--out); z-index: -1; }
@media (hover: hover) and (pointer: fine) {
  .btn--solid:hover { color: var(--bg); border-color: var(--ink); transition-delay: 0s, 120ms, 0s; }
  .btn--solid:hover::after { clip-path: inset(0 0 0 0); }
}
.btn--lg { min-height: 52px; padding: 0 1.75rem; font-size: var(--fs-2); }
.btn:active { transform: scale(.97) !important; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 100; background: rgba(250,250,248,.9); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color var(--t); }
.nav__progress { position: absolute; left: 0; top: 0; height: 2px; width: 100%; background: var(--accent); transform: scaleX(var(--sp, 0)); transform-origin: left; }
.nav__in { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); transition: height var(--t) var(--out); }
.nav--shrunk { border-bottom-color: var(--rule); }
.nav--shrunk .nav__in { height: 64px; }
.nav__logo { display: flex; align-items: center; min-height: 44px; }
.nav__logo img { height: 48px; width: auto; transition: height var(--t) var(--out); }
.nav--shrunk .nav__logo img { height: 40px; }
.nav__toggle { width: 44px; height: 44px; border: 0; background: none; display: grid; place-content: center; gap: 6px; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--ink); transition: transform var(--t) var(--out), opacity var(--t); }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
.nav__links { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--bg); border-bottom: 1px solid var(--rule); padding: var(--s-2) 1rem var(--s-3); flex-direction: column; gap: 4px; }
.nav__links[data-open="true"] { display: flex; }
.nav__links a:not(.btn) { padding: .7rem 0; text-decoration: none; font-weight: 500; min-height: 44px; display: flex; align-items: center; position: relative; }
.nav__links a:not(.btn)::after { content: ""; position: absolute; left: 0; bottom: .45rem; height: 1.5px; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform 240ms var(--out); }
.nav__links a:not(.btn):hover::after, .nav__links a[aria-current="true"]::after { transform: scaleX(1); transform-origin: left; }
.nav__links .btn { margin-top: var(--s-2); }

/* Sections */
.band { padding: var(--s-6) 0; border-top: 1px solid var(--rule); position: relative; }
.band--alt { background: var(--bg-alt); }

/* Scroll-driven sections: tall section, pinned child. --p runs 0 to 1 while pinned. */
.scrub { height: calc(var(--len, 2) * 100vh); height: calc(var(--len, 2) * 100dvh); padding: 0; }
.how__pin, .thesis__pin { position: sticky; top: 0; height: 100vh; height: 100dvh; display: flex; align-items: center; overflow: hidden; }
.how__pin { padding-top: var(--nav-h); }

/* Hero */
.hero { border-top: 0; padding: 0; }
.hero__pin { min-height: calc(100vh - var(--nav-h)); min-height: calc(100dvh - var(--nav-h)); display: flex; align-items: center; padding: var(--s-6) 0; }
.hero__in { display: grid; gap: var(--s-4); }
.split .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .08em; margin-bottom: -.08em; }
.split .w > span { display: inline-block; transform: translateY(110%); animation: up 900ms var(--out) forwards; animation-delay: var(--d, 0s); }
.rise { opacity: 0; transform: translateY(14px); animation: rise 800ms var(--out) forwards; animation-delay: var(--d, 0s); }
@keyframes up { to { transform: none; } }
@keyframes rise { to { opacity: 1; transform: none; } }

.hero__art { display: grid; place-items: center; }
.houses { position: relative; width: min(100%, 360px); aspect-ratio: 464 / 290; }
.houses .logo { width: 100%; height: auto; overflow: visible; }
.houses .big { fill: var(--ink); }
.houses .small { fill: var(--accent); }
/* The mark is born: the big house rises, the side house comes out from behind it and settles. */
.houses.play .big { animation: shs-rise .4s cubic-bezier(.22,.61,.36,1) both; }
.houses.play .small { animation: shs-emerge .8s .4s both; }
@keyframes shs-rise { from { opacity: 0; transform: translateY(calc(var(--k, 1) * 12px)); } to { opacity: 1; transform: none; } }
@keyframes shs-emerge {
  0% { transform: translateX(-194px); animation-timing-function: cubic-bezier(.3,.7,.3,1); }
  84% { transform: translateX(calc(var(--k, 1) * 1.5px)); animation-timing-function: cubic-bezier(.45,0,.55,1); }
  100% { transform: none; } }
/* Process */
.watermark { position: absolute; right: -8%; bottom: -4%; width: 48%; max-width: 520px; opacity: .06; pointer-events: none; transform: translateY(calc(var(--p) * -60px)); }
.process { margin-top: var(--s-3); display: grid; gap: var(--s-3); }
.process__tabs { display: grid; gap: 4px; }
.process__tabs [role="tab"] { display: grid; grid-template-columns: auto 1fr; column-gap: .9rem; align-items: baseline; min-height: 52px; padding: .6rem .9rem; background: none; border: 1.5px solid var(--rule); border-radius: var(--radius); text-align: left; transition: border-color var(--t), background var(--t), color var(--t), transform 160ms var(--out); }
.process__tabs [role="tab"]:active { transform: scale(.985); }
.process__n { font-family: var(--serif); font-size: var(--fs-3); color: var(--accent-deep); grid-row: 1 / 3; }
.process__word { font-weight: 600; font-size: var(--fs-3); }
.process__line { font-size: var(--fs-1); color: var(--ink-soft); }
.process__tabs [role="tab"][aria-selected="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.process__tabs [role="tab"][aria-selected="true"] .process__line { color: rgba(250,250,248,.7); }
.process__tabs [role="tab"][aria-selected="true"] .process__n { color: var(--accent); }
.process__track { position: relative; height: 3px; background: var(--rule); border-radius: 2px; }
.process__fill { position: absolute; left: 0; top: 0; height: 100%; width: 100%; background: var(--accent); border-radius: 2px; transform: scaleX(var(--p)); transform-origin: left; }
.process__head { position: absolute; right: -8px; top: 50%; width: 16px; height: 16px; color: var(--accent); transform: translateY(-50%) scaleX(calc(1 / max(var(--p), .02))); transform-origin: right; }
.process__panels { position: relative; min-height: 150px; }
.process__panels [role="tabpanel"] { padding: var(--s-2) 0 0; animation: fadeUp 320ms var(--out); }
.process__panels h3 { margin-bottom: var(--s-2); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); filter: blur(3px); } to { opacity: 1; transform: none; filter: none; } }

/* Thesis: a scroll accordion. One problem opens at a time, the picture swaps with it. */
.thesis { --rp: 0; }
.acc { display: grid; gap: var(--s-4); margin-top: var(--s-3); }
.acc__list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.acc__item [role="tab"] { display: grid; grid-template-columns: auto 1fr; column-gap: 1rem; width: 100%; text-align: left; background: none; border: 0; border-bottom: 1px solid var(--rule); padding: 1rem 0; position: relative; min-height: 56px; }
.acc__n { font-family: var(--serif); font-size: var(--fs-3); color: var(--ink-soft); transition: color var(--t); }
.acc__t { font-family: var(--serif); font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.2; letter-spacing: -0.01em; color: var(--ink-soft); transition: color var(--t); text-wrap: balance; }
.acc__d { grid-column: 2; color: var(--ink-soft); font-size: var(--fs-1); max-height: 0; opacity: 0; overflow: hidden; transform: translateY(-4px); transition: max-height 380ms var(--out), opacity 280ms var(--out), transform 380ms var(--out), margin 380ms var(--out); }
.acc__bar { position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; }
[aria-selected="true"] .acc__n { color: var(--accent-deep); }
[aria-selected="true"] .acc__t { color: var(--ink); }
[aria-selected="true"] .acc__d { max-height: 4em; opacity: 1; transform: none; margin-top: .4rem; }
[aria-selected="true"] .acc__bar { transform: scaleX(var(--rp)); }
.acc__panels { position: relative; min-height: 260px; display: grid; align-items: center; }
.acc__panel { grid-area: 1 / 1; animation: swapIn 360ms var(--out); }
.acc__panel[hidden] { display: none; }
@keyframes swapIn { from { opacity: 0; transform: translateY(10px) scale(.98); filter: blur(4px); } to { opacity: 1; transform: none; filter: none; } }
.mock__type2::after { content: ""; display: inline-block; width: 1px; height: 1em; background: var(--ink); margin-left: 2px; vertical-align: -2px; animation: caret 1s steps(2) infinite; }

/* Calculator */
.calc { display: grid; gap: var(--s-5); }
.calc__row { margin-top: var(--s-3); }
.calc__row label { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; font-weight: 500; margin-bottom: .4rem; }
.calc__row output { font-family: var(--serif); font-size: var(--fs-3); color: var(--accent-deep); font-variant-numeric: tabular-nums; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 44px; background: none; margin: 0; cursor: pointer; }
input[type="range"]::-webkit-slider-runnable-track { height: 3px; background: linear-gradient(to right, var(--accent) 0 var(--f, 25%), var(--rule) var(--f, 25%) 100%); border-radius: 2px; }
input[type="range"]::-moz-range-track { height: 3px; background: var(--rule); border-radius: 2px; }
input[type="range"]::-moz-range-progress { height: 3px; background: var(--accent); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 24px; height: 24px; margin-top: -10.5px; border-radius: 50%; background: var(--bg); border: 3px solid var(--ink); transition: transform 160ms var(--out); }
input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--bg); border: 3px solid var(--ink); }
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.2); }
.calc__out { border-top: 1px solid var(--ink); padding-top: var(--s-3); }
.calc__big { display: grid; gap: .1rem; margin-bottom: var(--s-3); }
.num { font-family: var(--serif); font-size: clamp(3rem, 9vw, 5.5rem); line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.calc__big--money .num { color: var(--accent-deep); }
.calc__unit { color: var(--ink-soft); }
.calc__year { color: var(--ink-soft); border-top: 1px solid var(--rule); padding-top: var(--s-2); }
.calc__year strong { color: var(--ink); font-variant-numeric: tabular-nums; }

/* Stacking cards */
.stack { list-style: none; margin: 0; padding: 0; }
.card { position: sticky; top: calc(var(--nav-h) + var(--i) * 14px); background: var(--card); border-top: 1px solid var(--ink); min-height: 72vh; min-height: 72dvh; display: flex; align-items: center; padding: var(--s-5) 0; transform-origin: top center; transform: scale(calc(1 - var(--cp, 0) * .04)); filter: brightness(calc(1 - var(--cp, 0) * .08)); box-shadow: 0 -24px 48px -40px rgba(28,28,26,.5); transition: background var(--t); }
.card--lit { background: var(--bg-alt); box-shadow: inset 0 0 0 2px var(--accent); }
.card__in { display: grid; gap: var(--s-4); }
.card__idx { font-family: var(--serif); font-size: var(--fs-3); color: var(--accent-deep); }
.card__name { font-family: var(--serif); font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 500; letter-spacing: -0.015em; margin: .25rem 0 var(--s-2); }
.card__fits { font-size: var(--fs-1); color: var(--ink-soft); }
.card__btn { background: none; border: 0; padding: .6rem 0; min-height: 44px; font-weight: 600; color: var(--accent-deep); display: inline-flex; align-items: center; gap: .4rem; }
.card__btn::after { content: "+"; font-size: 1.2em; line-height: 1; transition: transform 200ms var(--out); }
.card__btn[aria-expanded="true"]::after { transform: rotate(45deg); }
.card__detail { animation: fadeUp 220ms var(--out); }
.card__detail p { margin: 0; padding-top: var(--s-2); border-top: 1px dashed var(--rule); font-size: var(--fs-1); max-width: 52ch; }

/* Mocks: tiny pictures of what the owner sees. Play when the card is in view. */
.mock { position: relative; background: var(--bg); border: 1.5px solid var(--ink); border-radius: var(--radius); padding: var(--s-2); font-size: var(--fs-1); min-height: 220px; box-shadow: 0 30px 60px -40px rgba(28,28,26,.55); }
.mock__tag { position: absolute; right: -8px; bottom: -12px; background: var(--accent); color: var(--ink); font-weight: 600; font-size: var(--fs-0); letter-spacing: .04em; padding: .35rem .6rem; border-radius: 999px; transform: scale(.9); opacity: 0; transition: transform 300ms var(--out) 1.4s, opacity 300ms 1.4s; }
.in .mock__tag { transform: none; opacity: 1; }
.mock__bar { display: flex; align-items: center; gap: 5px; padding-bottom: .6rem; border-bottom: 1px solid var(--rule); margin-bottom: .8rem; }
.mock__bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--rule); }
.mock__bar i { font-style: normal; margin-left: .5rem; color: var(--ink-soft); font-size: var(--fs-0); }
.mock__l { display: block; height: 8px; border-radius: 4px; background: var(--rule); margin: 7px 0; width: var(--w); transform: scaleX(0); transform-origin: left; transition: transform 500ms var(--out); }
.in .mock__l { transform: none; }
.mock__h { display: block; height: 14px; width: 60%; border-radius: 4px; background: var(--ink); margin-bottom: 12px; transform: scaleX(0); transform-origin: left; transition: transform 400ms var(--out); }
.in .mock__h { transform: none; }
.mock--doc .mock__l:nth-of-type(1) { transition-delay: .2s } .mock--doc .mock__l:nth-of-type(2) { transition-delay: .35s } .mock--doc .mock__l:nth-of-type(3) { transition-delay: .5s } .mock--doc .mock__l:nth-of-type(4) { transition-delay: .65s }
.mock__total { display: flex; justify-content: space-between; border-top: 1px solid var(--ink); margin-top: 10px; padding-top: 8px; font-weight: 600; }
.mock__price { font-family: var(--serif); font-size: 1.3rem; color: var(--accent-deep); opacity: 0; transform: translateY(6px); transition: opacity 300ms 1s, transform 300ms var(--out) 1s; }
.in .mock__price { opacity: 1; transform: none; }

.mock--sync { display: grid; grid-template-columns: 1fr auto 1fr; gap: .6rem; align-items: center; }
.mock__pane { border: 1px solid var(--rule); border-radius: 8px; padding: .6rem; }
.mock__pane i { font-style: normal; font-size: var(--fs-0); color: var(--ink-soft); letter-spacing: .06em; text-transform: uppercase; }
.mock__rec { display: grid; gap: 2px; margin-top: .4rem; font-weight: 500; position: relative; }
.mock__val { color: var(--ink-soft); font-weight: 400; font-variant-numeric: tabular-nums; transition: opacity 300ms; }
.mock__val--new { position: absolute; left: 0; top: 1.6em; color: var(--accent-deep); font-weight: 600; opacity: 0; transition: opacity 300ms .6s; }
.in .mock__val--new { opacity: 1; }
.in .mock__val:not(.mock__val--new) { opacity: 0; transition-delay: .6s; }
.mock__val--late { transition-delay: 1.3s !important; }
.mock__link { color: var(--accent); width: 40px; }
.mock__link svg { stroke-dasharray: 40; stroke-dashoffset: 40; transition: stroke-dashoffset 500ms var(--out) .8s; }
.in .mock__link svg { stroke-dashoffset: 0; }

.mock__mail { display: grid; grid-template-columns: 1fr auto; column-gap: .5rem; align-items: center; padding: .55rem 0; border-bottom: 1px solid var(--rule); opacity: 0; transform: translateY(6px); transition: opacity 300ms var(--t), transform 300ms var(--out) var(--t); }
.in .mock__mail { opacity: 1; transform: none; }
.mock__mail span { font-weight: 500; }
.mock__mail em { font-style: normal; font-size: var(--fs-0); font-weight: 600; padding: .15rem .5rem; border-radius: 999px; background: var(--accent-soft); color: var(--accent-deep); opacity: 0; transition: opacity 250ms calc(var(--t) + .5s); }
.mock__mail em.mock__lab--b { background: var(--bg-alt); color: var(--ink-soft); }
.mock__mail em.mock__lab--x { background: var(--rule); color: var(--ink-soft); text-decoration: line-through; }
.in .mock__mail em { opacity: 1; }
.mock__mail u { grid-column: 1 / -1; text-decoration: none; font-size: var(--fs-0); color: var(--ink-soft); opacity: 0; transition: opacity 250ms calc(var(--t) + .8s); }
.in .mock__mail u { opacity: 1; }

.mock__row { display: grid; grid-template-columns: 1fr auto; row-gap: .1rem; column-gap: .5rem; padding: .55rem 0; border-bottom: 1px solid var(--rule); font-weight: 500; }
.mock__row em { grid-column: 1 / -1; font-style: normal; font-size: var(--fs-0); color: var(--accent-deep); font-weight: 600; opacity: 0; transition: opacity 250ms 1s; }
.in .mock__row em { opacity: 1; }
.mock__tick { font-variant-numeric: tabular-nums; color: var(--ink-soft); }
.mock__tick s { margin-right: .4rem; transition: opacity 300ms .7s; }
.mock__tick b { color: var(--ink); font-weight: 600; opacity: 0; transition: opacity 300ms .7s; }
.in .mock__tick s { opacity: .5; }
.in .mock__tick b { opacity: 1; }

.mock__item { display: grid; grid-template-columns: auto 1fr; column-gap: .6rem; align-items: center; padding: .4rem 0; opacity: 0; transition: opacity 300ms var(--t); }
.in .mock__item { opacity: 1; }
.mock__item b { font-size: var(--fs-0); background: var(--ink); color: var(--bg); padding: .15rem .45rem; border-radius: 4px; grid-row: 1 / 3; }
.mock__item .mock__l { margin: 4px 0; transition-delay: calc(var(--t) + .2s); }

.mock__search { display: flex; align-items: center; gap: .5rem; border: 1.5px solid var(--ink); border-radius: 999px; padding: .55rem .9rem; margin-bottom: var(--s-2); }
.mock__search svg { width: 18px; height: 18px; flex: none; }
.mock__type::after { content: ""; display: inline-block; width: 1px; height: 1em; background: var(--ink); margin-left: 2px; vertical-align: -2px; animation: caret 1s steps(2) infinite; }
@keyframes caret { to { opacity: 0; } }
.mock__result { border: 1px solid var(--rule); border-radius: 8px; padding: .7rem; opacity: 0; transform: translateY(8px); transition: opacity 300ms 1.6s, transform 300ms var(--out) 1.6s; }
.in .mock__result { opacity: 1; transform: none; }
.mock__result b { display: block; color: var(--accent-deep); margin-bottom: 4px; }
.mock__result .mock__l { transition-delay: 1.8s; }

/* Promises: a signature draws itself */
.promises { list-style: none; margin: var(--s-4) 0 0; padding: 0; display: grid; }
.promise { display: grid; gap: .4rem; padding: var(--s-3) 0; border-top: 1px solid var(--rule); position: relative; }
.promise:last-child { border-bottom: 1px solid var(--rule); }
.promises__n { font-family: var(--serif); font-size: var(--fs-3); color: var(--accent-deep); }
.promise p { margin: 0; color: var(--ink-soft); }
.sig { width: 120px; color: var(--accent); margin-top: .5rem; }
.sig path { stroke-dasharray: 400; stroke-dashoffset: 400; }
.in .sig path { animation: sign 1.2s var(--inout) forwards; animation-delay: calc(.3s + var(--n, 0) * .25s); }
.promise:nth-child(2) .sig path { --n: 1; } .promise:nth-child(3) .sig path { --n: 2; }
@keyframes sign { to { stroke-dashoffset: 0; } }

/* Marquee */
.marquee { overflow: hidden; border-block: 1px solid var(--rule); padding: var(--s-2) 0; margin: var(--s-2) 0 var(--s-5); mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { list-style: none; margin: 0; padding: 0; display: flex; gap: 8px; width: max-content; animation: slide 38s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__track li { padding: .5rem .95rem; border: 1px solid var(--ink); border-radius: 999px; white-space: nowrap; font-family: var(--serif); font-size: 1.15rem; }
@keyframes slide { to { transform: translateX(calc(-50% - 4px)); } }

/* Picker */
.picker { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: var(--s-3); }
.pick { min-height: 44px; padding: .5rem 1rem; border: 1.5px solid var(--ink); border-radius: 999px; background: none; font-weight: 500; transition: background var(--t), color var(--t), transform 160ms var(--out); }
.pick:active { transform: scale(.96); }
@media (hover: hover) and (pointer: fine) { .pick:hover { background: var(--bg-alt); } }
.pick[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.pick[aria-pressed="true"]::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); margin-right: .5rem; vertical-align: 1px; }
.picker__out { color: var(--ink-soft); min-height: 1.6em; transition: opacity 200ms, filter 200ms; }
.picker__out.swap { opacity: .4; filter: blur(2px); }
.picker__out strong { color: var(--ink); }

/* About */
.about { display: grid; gap: var(--s-4); }
.todo { color: var(--ink-soft); font-style: italic; }

/* CTA: the dark room */
.cta { background: var(--ink); color: var(--bg); border-top: 0; overflow: hidden; padding: var(--s-7) 0; }
.cta .eyebrow { color: rgba(250,250,248,.6); }
.cta h2 em { color: var(--accent); }
.cta__in { position: relative; }
.cta__email { margin-top: var(--s-3); color: rgba(250,250,248,.7); }
.cta__email a, .foot__in a { display: inline-block; padding: .7rem 0; }
.cta__mark { position: absolute; right: -6%; top: 50%; width: min(70%, 620px); aspect-ratio: 464 / 290; transform: translateY(-50%); opacity: .14; pointer-events: none; }
.cta__mark .big { fill: var(--bg); opacity: 0; }
.cta__mark .small { transform: translateX(-194px); }
.cta.in .cta__mark .big { animation: shs-rise .4s cubic-bezier(.22,.61,.36,1) .2s both; }
.cta.in .cta__mark .small { animation: shs-emerge .8s .6s both; }
.cta .btn--solid::after { background: var(--bg); }
@media (hover: hover) and (pointer: fine) { .cta .btn--solid:hover { color: var(--ink); border-color: var(--bg); } }

/* Footer */
.foot { border-top: 1px solid var(--ink); padding: var(--s-5) 0; }
.foot__in { display: grid; gap: var(--s-2); font-size: var(--fs-1); color: var(--ink-soft); }
.foot__in p { margin: 0; }
.foot__legal { padding-top: var(--s-2); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 600ms var(--out), transform 600ms var(--out); }
.reveal.in { opacity: 1; transform: none; }

/* Phones: the pinned hero has to fit in one screen */
@media (max-width: 767px) {
  .hero__pin { align-items: start; padding-top: var(--s-4); min-height: 0; }
  .hero__in { gap: var(--s-2); }
  .hero .lede { font-size: 1.1rem; margin: var(--s-2) 0 var(--s-3); }
  .hero .eyebrow { max-width: 30ch; }
  .houses { width: min(100%, 250px); margin-top: var(--s-2); }
  .how__pin, .thesis__pin { align-items: start; height: auto; min-height: 100vh; min-height: 100dvh; }
  .thesis__pin { padding-top: calc(var(--nav-h) + var(--s-2)); padding-bottom: var(--s-3); }
  .acc__panels { min-height: 230px; }
  .how__pin { padding-top: calc(var(--nav-h) + var(--s-2)); padding-bottom: var(--s-3); }

  .process__panels { min-height: 120px; }
}

/* Tablet and up */
@media (min-width: 768px) {
  :root { --fs-4: 2.25rem; --fs-5: 3.25rem; }
  .band { padding: var(--s-7) 0; }
  .scrub { padding: 0; }
  .process__tabs { grid-template-columns: repeat(3, 1fr); }
  .calc { grid-template-columns: 1.1fr 1fr; align-items: end; }
  .calc__out { border-top: 0; border-left: 1px solid var(--ink); padding: 0 0 0 var(--s-4); }
  .card__in { grid-template-columns: 1fr 1fr; align-items: center; gap: var(--s-6); }
  .promises { grid-template-columns: repeat(3, 1fr); column-gap: var(--s-4); }
  .promise { border-bottom: 1px solid var(--rule); }
  .foot__in { grid-template-columns: auto 1fr auto; align-items: center; }
  .foot__legal { grid-column: 1 / -1; border-top: 1px solid var(--rule); }
}

/* Desktop */
@media (min-width: 1024px) {
  :root { --fs-5: 4rem; }
  .nav__toggle { display: none; }
  .nav__links { display: flex; position: static; flex-direction: row; align-items: center; gap: var(--s-3); padding: 0; border: 0; background: none; }
  .nav__links .btn { margin: 0 0 0 var(--s-2); }
  .hero__in { grid-template-columns: 1.1fr 1fr; align-items: center; gap: var(--s-6); }
  .houses { width: min(100%, 460px); }
  .acc { grid-template-columns: 1fr 1fr; gap: var(--s-6); align-items: center; }
  .process { grid-template-columns: 1fr 1.2fr; column-gap: var(--s-5); grid-template-areas: "tabs panels" "track panels"; align-items: start; }
  .process__tabs { grid-area: tabs; grid-template-columns: 1fr; }
  .process__track { grid-area: track; }
  .process__panels { grid-area: panels; }
  .process__panels [role="tabpanel"] { padding: 0; }
}

/* Motion off: everything readable, nothing moves */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .mock__tag, .mock__l, .mock__h, .mock__price, .mock__val--new, .mock__mail, .mock__mail em, .mock__mail u, .mock__row em, .mock__tick b, .mock__item, .mock__result { opacity: 1 !important; transform: none !important; }
  .mock__val:not(.mock__val--new) { opacity: 0 !important; }
  .mock__link svg { stroke-dashoffset: 0 !important; }
  .sig path { stroke-dashoffset: 0 !important; }
  .split .w > span, .rise { opacity: 1; transform: none; }
  .houses .big, .cta__mark .big { opacity: 1 !important; }
  .houses .small, .cta__mark .small { transform: none !important; }
  .scrub { height: auto; padding: var(--s-6) 0; }
  .how__pin, .thesis__pin { position: static; height: auto; overflow: visible; }
  .acc__d { max-height: none; opacity: 1; transform: none; }
  .acc__bar { display: none; }
  .process__fill { transform: scaleX(var(--i-frac, 0)); }
  .card { position: static; transform: none; filter: none; min-height: 0; }
}