/* ==========================================================================
   Rich Dad Poor Dad — companion site
   One token layer, mobile base, wider screens layered with min-width.
   ========================================================================== */

/* ---------- tokens ---------- */
:root {
  /* surfaces */
  --bg:        #08070A;
  --bg-deep:   #050407;
  --surface:   #131218;
  --surface-2: #1A1820;
  --line:      rgba(230, 229, 240, .10);
  --line-2:    rgba(230, 229, 240, .17);
  --rule:      rgba(212, 175, 55, .32);

  /* ink */
  --ink:   #EFEDF4;
  --ink-2: #C9C5D4;
  --muted: #A6A2B0;

  /* accents: one primary (gold), one secondary (violet), one signal (rose) */
  --gold:      #D4AF37;
  --gold-soft: #E8CE7A;
  --gold-dim:  rgba(212, 175, 55, .5);
  --violet:    #8C6BD8;
  --rose:      #E0715E;
  --sage:      #7FB09A;

  /* type */
  --display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --ui:      "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --step--1: clamp(.76rem, .73rem + .18vw, .82rem);
  --step-0:  clamp(1rem, .96rem + .25vw, 1.0625rem);
  --step-1:  clamp(1.16rem, 1.06rem + .5vw, 1.4rem);
  --step-2:  clamp(1.5rem, 1.28rem + 1.1vw, 2.1rem);
  --step-3:  clamp(1.95rem, 1.5rem + 2.2vw, 3.3rem);
  --step-4:  clamp(2.5rem, 1.75rem + 3.6vw, 4.8rem);
  --step-5:  clamp(3rem, 1.9rem + 5.4vw, 6.4rem);

  /* space */
  --gut: 1.25rem;
  --section-y: clamp(4.5rem, 3rem + 7vw, 9.5rem);
  --measure: 68ch;

  /* motion */
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --ease-soft: cubic-bezier(.32, .72, 0, 1);

  --header-h: 64px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; }
html:focus-within { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--ui);
  font-size: var(--step-0);
  font-weight: 300;
  line-height: 1.65;
  letter-spacing: .002em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 400;
  font-variation-settings: "SOFT" 0, "WONK" 0;
  color: var(--ink);
  line-height: 1.04;
  letter-spacing: -.022em;
  text-wrap: balance;
}

p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
ul, ol { list-style: none; padding: 0; }

::selection { background: var(--gold); color: #0A0A0A; }
:root { caret-color: var(--gold); accent-color: var(--gold); scrollbar-color: #2A2731 var(--bg); }
* { scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: #2A2731; border: 2px solid var(--bg-deep); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

.skip {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--gold); color: #0A0A0A; padding: .7rem 1.1rem;
  font-size: var(--step--1); font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  transition: top .18s var(--ease-out);
}
.skip:focus { top: 1rem; }

.vh {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

/* ---------- layout ---------- */
.wrap { width: min(1220px, 100% - (var(--gut) * 2)); margin-inline: auto; }
.wrap--narrow { width: min(760px, 100% - (var(--gut) * 2)); margin-inline: auto; }
.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: clamp(3rem, 2rem + 5vw, 6rem); }
.section--surface { background: var(--surface); }
.section--deep { background: var(--bg-deep); }

.grid { display: grid; gap: clamp(1.5rem, 1rem + 3vw, 3.5rem); }

/* section heads: heading carries its own weight, no eyebrow label */
.sec-head { max-width: 34ch; }
.sec-head h2 { font-size: var(--step-3); }
.sec-head p { margin-top: 1.1rem; max-width: 46ch; color: var(--muted); }

.lede { font-size: var(--step-1); color: var(--ink-2); font-weight: 300; max-width: 52ch; }

.rule { height: 1px; background: var(--line); border: 0; }
.rule--gold { background: linear-gradient(90deg, var(--gold) 0%, rgba(212,175,55,0) 100%); }

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: var(--step--1);
  letter-spacing: .06em;
}

/* ---------- links ---------- */
.link {
  color: var(--ink);
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 1px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.link:hover { color: var(--gold-soft); border-color: var(--gold); }

.arrow-link {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: var(--step--1); letter-spacing: .1em; text-transform: uppercase;
  color: var(--gold); font-weight: 500;
}
.arrow-link svg { transition: transform .28s var(--ease-out); }
.arrow-link:hover svg { transform: translateX(5px); }

/* ---------- buttons ---------- */
.btn {
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  padding: 1.02rem 1.6rem; min-height: 48px;
  font-family: var(--ui); font-size: .78rem; font-weight: 500;
  letter-spacing: .11em; text-transform: uppercase;
  color: var(--ink); background: transparent;
  border: 1px solid var(--line-2);
  transition: color .24s var(--ease), border-color .24s var(--ease), transform .14s var(--ease-out), background-color .24s var(--ease);
}
.btn > * { position: relative; z-index: 1; }
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: var(--gold);
  transform: scaleX(0); transform-origin: left center;
  transition: transform .42s var(--ease-out);
}
.btn:hover { color: #0A0A0A; border-color: var(--gold); }
.btn:hover::before { transform: scaleX(1); }
.btn:active { transform: scale(.975); }
.btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .45; pointer-events: none; }
.btn--gold { background: var(--gold); border-color: var(--gold); color: #0A0A0A; font-weight: 600; }
.btn--gold::before { background: transparent; }
.btn--gold:hover { color: var(--gold); border-color: var(--gold); background: transparent; }
.btn--wide { width: 100%; }
.btn--lg { padding: 1.15rem 2rem; font-size: .82rem; }

.btn.is-loading { color: transparent !important; pointer-events: none; }
.btn.is-loading::after {
  content: ""; position: absolute; z-index: 2; inset: 0; margin: auto;
  width: 17px; height: 17px; border-radius: 50%;
  border: 1.5px solid rgba(10,10,10,.28); border-top-color: #0A0A0A;
  animation: spin .7s linear infinite;
}
.btn--ghost.is-loading::after, .btn.is-loading:not(.btn--gold)::after {
  border-color: rgba(239,237,244,.25); border-top-color: var(--ink);
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .btn, .btn::before, .link, .arrow-link svg { transition-duration: .01ms; }
  .btn.is-loading::after { animation-duration: 2s; }
}

/* ---------- header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(8, 7, 10, .74);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.site-header__in { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; width: min(1220px, 100% - (var(--gut) * 2)); margin-inline: auto; }

.brand { display: inline-flex; align-items: baseline; gap: .5rem; }
.brand__mark { color: var(--gold); display: block; }
.brand__name {
  font-family: var(--display); font-size: 1.02rem; letter-spacing: .04em;
  color: var(--ink); font-variation-settings: "SOFT" 0, "WONK" 0;
}
.brand__sub { font-size: .62rem; letter-spacing: .28em; text-transform: uppercase; color: var(--muted); display: none; }

.nav { display: none; }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, .4rem + 1.4vw, 2rem); }
.nav__links a {
  position: relative; font-size: .8rem; letter-spacing: .07em; text-transform: uppercase;
  color: var(--ink-2); padding: .35rem 0; font-weight: 400;
  transition: color .2s var(--ease);
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--gold); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease-out);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { transform: scaleX(1); }
.nav__links a[aria-current="page"] { color: var(--gold); }

.header-actions { display: flex; align-items: center; gap: .75rem; }
.header-actions .btn { padding: .72rem 1.1rem; min-height: 40px; font-size: .7rem; }
.header-actions .btn--quiet { border-color: transparent; }
.header-actions .btn--quiet:hover { color: var(--gold); }
.header-actions .btn--quiet::before { display: none; }

.burger {
  width: 44px; height: 44px; display: grid; place-items: center;
  border: 1px solid var(--line-2); color: var(--ink);
  transition: border-color .2s var(--ease), transform .14s var(--ease-out);
}
.burger:active { transform: scale(.94); }
.burger:hover { border-color: var(--gold); color: var(--gold); }
.burger span { display: block; width: 17px; height: 1px; background: currentColor; position: relative; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1px; background: currentColor;
  transition: transform .28s var(--ease-out), opacity .2s var(--ease);
}
.burger span::before { top: -5px; } .burger span::after { top: 5px; }
.burger[aria-expanded="true"] span { background: transparent; }
.burger[aria-expanded="true"] span::before { transform: translateY(5px) rotate(45deg); }
.burger[aria-expanded="true"] span::after { transform: translateY(-5px) rotate(-45deg); }

.navpanel {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
  background: var(--bg); border-top: 1px solid var(--line);
  padding: 2rem var(--gut) 3rem;
  display: flex; flex-direction: column; gap: .25rem;
  overflow-y: auto;
  clip-path: inset(0 0 100% 0);
  transition: clip-path .5s var(--ease-soft);
  pointer-events: none;
}
.navpanel.is-open { clip-path: inset(0 0 0 0); pointer-events: auto; }
.navpanel a {
  font-family: var(--display); font-size: 1.5rem; color: var(--ink);
  padding: .85rem 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center;
}
.navpanel a span { font-family: var(--mono); font-size: .72rem; color: var(--muted); letter-spacing: .1em; }
.navpanel .btn { margin-top: 1.75rem; }
@media (prefers-reduced-motion: reduce) {
  .navpanel { transition: none; }
}

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: flex-end; padding-block: calc(var(--header-h) + 4rem) 3rem; overflow: hidden; }
.hero__media { position: absolute; inset: 0; z-index: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 45%; filter: saturate(.85) contrast(1.05); }
.hero__scrim {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(180deg, rgba(5,4,7,.92) 0%, rgba(5,4,7,.55) 32%, rgba(5,4,7,.82) 74%, var(--bg) 100%),
    radial-gradient(120% 80% at 82% 30%, rgba(212,175,55,.13), transparent 60%);
}
.hero__in { position: relative; z-index: 2; width: min(1220px, 100% - (var(--gut) * 2)); margin-inline: auto; }
.hero h1 { font-size: var(--step-5); letter-spacing: -.03em; max-width: 18ch; }
.hero h1 em { font-style: italic; color: var(--gold); font-variation-settings: "SOFT" 40, "WONK" 1; }
.hero__stand { margin-top: 1.6rem; font-size: var(--step-1); color: var(--ink-2); max-width: 44ch; }
.hero__ctas { margin-top: 2.4rem; display: flex; flex-wrap: wrap; gap: .9rem; }
.hero__facts {
  margin-top: clamp(2.5rem, 2rem + 4vw, 4.5rem); padding-top: 1.5rem; border-top: 1px solid var(--line);
  display: grid; gap: 1.5rem 2rem;
}
.hero__facts div { display: flex; flex-direction: column; gap: .35rem; }
.hero__facts dt { font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.hero__facts dd { font-family: var(--display); font-size: 1.5rem; color: var(--ink); line-height: 1; }
.hero__facts dd small { font-family: var(--ui); font-size: .78rem; color: var(--muted); letter-spacing: .02em; display: block; margin-top: .4rem; line-height: 1.4; }

.scroll-cue {
  position: absolute; z-index: 2; right: var(--gut); bottom: 2.5rem;
  display: none; align-items: center; gap: .7rem;
  font-family: var(--mono); font-size: .66rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted);
}
.scroll-cue i { display: block; width: 46px; height: 1px; background: var(--gold-dim); position: relative; overflow: hidden; }
.scroll-cue i::after { content: ""; position: absolute; inset: 0; background: var(--gold); transform-origin: left; animation: cue 3.2s var(--ease-in-out) infinite; }
@keyframes cue { 0% { transform: scaleX(0) } 45% { transform: scaleX(1) } 100% { transform: scaleX(1); opacity: 0 } }
@media (prefers-reduced-motion: reduce) { .scroll-cue i::after { animation: none; transform: scaleX(1); } }

/* ---------- vertical rail ---------- */
.rail { display: none; }

/* ---------- two dads ledger ---------- */
.twodads { display: grid; gap: 0; border-top: 1px solid var(--line); }
.dad-head { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); }
.dad-head > div { padding: 1.1rem 0; }
.dad-head > div:last-child { text-align: right; }
.dad-head h3 { font-size: var(--step-1); }
.dad-head p { color: var(--muted); font-size: var(--step--1); margin-top: .3rem; }
.dad-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem 2rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); align-items: start; }
.dad-row q { font-size: var(--step-0); line-height: 1.5; quotes: none; }
.dad-row q::before, .dad-row q::after { content: ""; }
.dad-row .poor { color: var(--muted); }
.dad-row .rich { color: var(--ink); }
.dad-row .rich q { font-family: var(--display); font-size: var(--step-1); }
.dad-row > div:last-child { text-align: right; }
@media (min-width: 720px) {
  .dad-head > div, .dad-row > div { padding-inline: 1.5rem; }
  .dad-head > div:first-child, .dad-row > div:first-child { padding-left: 0; }
  .dad-head > div:last-child, .dad-row > div:last-child { padding-right: 0; }
  .dad-row { gap: 2rem; }
}
.dad-row__note {
  grid-column: 1 / -1; font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: #6E6A78;
}

/* ---------- cash flow engine ---------- */
.engine { position: relative; }
.engine__inner { display: grid; gap: 2rem; }
.engine__head h2 { font-size: var(--step-3); max-width: 30ch; }
.engine__head p { margin-top: 1rem; color: var(--muted); max-width: 48ch; }

.engine__tabs { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .5rem; }
.tab {
  padding: .62rem 1rem; min-height: 44px; border: 1px solid var(--line-2);
  font-size: .72rem; letter-spacing: .11em; text-transform: uppercase; color: var(--muted);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease), transform .14s var(--ease-out);
}
.tab:hover { color: var(--ink); border-color: var(--gold-dim); }
.tab:active { transform: scale(.97); }
.tab[aria-selected="true"] { color: #0A0A0A; background: var(--gold); border-color: var(--gold); font-weight: 600; }

.engine__stage { display: grid; gap: 1.75rem; }
.engine__diagram { position: relative; margin: 0; }
.arrows { width: 100%; height: auto; display: block; overflow: visible; }
.arrows .flow {
  fill: none; stroke: rgba(230, 229, 240, .14); stroke-width: 1.25;
  transition: stroke .45s var(--ease), stroke-width .45s var(--ease);
}
.arrows .flow--on { stroke: var(--gold); stroke-width: 1.6; }
.arrows .flow--out { stroke: var(--rose); stroke-width: 1.4; }
.arrows .mote { fill: var(--gold); }
.arrows .mote--out { fill: var(--rose); }

.nodes { position: absolute; inset: 0; }
.node {
  position: absolute; left: var(--x); top: var(--y); width: 27.78%; height: var(--h);
  display: flex; flex-direction: column; justify-content: center; gap: .28rem;
  padding: .85rem 1rem; background: rgba(19, 18, 24, .94);
  border: 1px solid var(--line-2);
  transition: border-color .4s var(--ease), background-color .4s var(--ease);
}
.node--gold { border-color: var(--gold); background: rgba(212, 175, 55, .07); }
.node__label { font-family: var(--mono); font-size: .64rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.node__value { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: clamp(.85rem, .5rem + .95vw, 1.3rem); color: var(--gold); line-height: 1.1; }
.node__unit { font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; color: #6E6A78; }

/* phones: the curves become the illustration, the four boxes become a readable list */
@media (max-width: 719px) {
  .nodes {
    position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
    background: var(--line); border: 1px solid var(--line); margin-top: 1.5rem;
  }
  .node { position: static; width: auto; height: auto; border: 0; background: var(--bg); padding: .85rem .9rem; }
  .node--gold { background: rgba(212, 175, 55, .07); }
  .node__value { font-size: 1.05rem; }
  .arrows { opacity: .8; }
}

.engine__readout { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.engine__readout > div { background: var(--bg); padding: 1.1rem 1.2rem; display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.engine__readout dt { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.engine__readout dd { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 1.05rem; color: var(--ink); }
.engine__readout .is-gold dd { color: var(--gold); }
.engine__readout .is-rose dd { color: var(--rose); }
.engine__note { font-size: var(--step--1); color: var(--muted); margin-top: .9rem; }

.engine__legend { display: flex; flex-wrap: wrap; gap: 1.25rem; margin-top: 1.25rem; }
.engine__legend span { display: inline-flex; align-items: center; gap: .5rem; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.engine__legend i { width: 16px; height: 1.5px; background: currentColor; display: block; }
.engine__legend .l-gold { color: var(--gold); } .engine__legend .l-rose { color: var(--rose); } .engine__legend .l-dim { color: #4A4654; }

.engine__verdict {
  margin-top: 1.5rem; padding-left: 1.1rem; border-left: 1px solid var(--rule);
  font-family: var(--display); font-size: var(--step-1); color: var(--ink); max-width: 46ch;
  min-height: 3.2em;
}
@media (min-width: 900px) {
  .engine__stage { grid-template-columns: minmax(0, 1.55fr) minmax(240px, .85fr); gap: 2.5rem; align-items: start; }
  .engine__readout { position: sticky; top: calc(var(--header-h) + 2rem); }
}

/* ---------- lessons ---------- */
.lessons { display: grid; gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
.lesson {
  background: var(--bg); padding: clamp(1.5rem, 1rem + 2vw, 2.75rem);
  display: grid; gap: 1rem; position: relative;
  transition: background-color .35s var(--ease);
}
.lesson:hover { background: var(--surface); }
.lesson__no { font-family: var(--mono); font-size: .72rem; letter-spacing: .2em; color: var(--gold); }
.lesson h3 { font-size: var(--step-1); max-width: 24ch; }
.lesson p { color: var(--muted); font-size: var(--step--1); max-width: 44ch; }
.lesson__tag { font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: #6E6A78; }
.lesson::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease-out);
}
.lesson:hover::after { transform: scaleX(1); }
.lesson--lead h3 { font-size: var(--step-2); }
.lesson--lead { background: var(--surface); }
.lesson--lead .lesson__no { color: var(--gold-soft); }
@media (min-width: 760px) {
  .lessons { grid-template-columns: repeat(2, 1fr); }
  .lesson--lead { grid-column: span 2; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); align-items: end; gap: 2rem; }
  .lesson--lead h3 { font-size: var(--step-3); }
}
@media (min-width: 1080px) {
  .lessons { grid-template-columns: repeat(3, 1fr); }
  .lesson--lead { grid-column: span 2; }
}

/* ---------- calculator ---------- */
.calc { display: grid; gap: 2.5rem; }
.calc__copy h2 { font-size: var(--step-3); max-width: 26ch; }
.calc__copy p { margin-top: 1.1rem; color: var(--muted); max-width: 46ch; }
.calc__form { border: 1px solid var(--line); background: var(--surface); padding: clamp(1.25rem, 1rem + 2vw, 2rem); }
.field { display: grid; gap: .5rem; margin-bottom: 1.2rem; }
.field label { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); display: flex; justify-content: space-between; gap: 1rem; }
.field label b { font-family: var(--mono); font-weight: 400; color: var(--ink); }
input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="search"], select, textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--line-2); color: var(--ink);
  padding: .85rem .95rem; min-height: 48px; border-radius: 0;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), box-shadow .2s var(--ease);
}
input::placeholder, textarea::placeholder { color: #6E6A78; }
input:hover, select:hover, textarea:hover { border-color: var(--gold-dim); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(212,175,55,.12); }
input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--rose); }
input:disabled, textarea:disabled { opacity: .5; cursor: not-allowed; }
textarea { min-height: 120px; resize: vertical; }

.field__err { font-size: .76rem; color: var(--rose); display: flex; align-items: center; gap: .4rem; }
.field__hint { font-size: .76rem; color: #6E6A78; }

output.calc__out {
  display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line);
  margin-top: 1.5rem; grid-template-columns: 1fr 1fr;
}
.calc__out dl { display: contents; }
.calc__out div { background: var(--bg); padding: 1rem; }
.calc__out dt { font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.calc__out dd { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 1.3rem; color: var(--ink); margin-top: .35rem; }
.calc__out .big { grid-column: 1 / -1; }
.calc__out .big dd { font-size: var(--step-2); color: var(--gold); }
@media (min-width: 900px) {
  .calc { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 4rem; align-items: start; }
}

/* ---------- obstacles spine ---------- */
.spine { position: relative; padding-left: 0; }
.obstacle { display: grid; gap: .9rem 2rem; padding: 2rem 0; border-top: 1px solid var(--line); }
.obstacle:last-child { border-bottom: 1px solid var(--line); }
.obstacle h3 { font-size: var(--step-2); display: flex; align-items: baseline; gap: 1rem; }
.obstacle h3 svg { color: var(--gold); flex: none; transform: translateY(3px); }
.obstacle p { color: var(--muted); max-width: 60ch; }
.obstacle .fix { color: var(--ink-2); }
.obstacle .fix b { color: var(--gold); font-weight: 500; }
@media (min-width: 880px) {
  .obstacle { grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); align-items: start; padding: 2.75rem 0; }
  .obstacle h3 { font-size: var(--step-3); }
}

/* ---------- statement ---------- */
.statement { padding-block: clamp(5rem, 3rem + 9vw, 11rem); }
.statement blockquote {
  font-family: var(--display); font-size: var(--step-4); line-height: 1.06; letter-spacing: -.025em;
  color: var(--ink); max-width: 24ch;
}
.statement cite {
  display: block; margin-top: 2rem; font-family: var(--mono); font-style: normal;
  font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted);
}
.statement__words span { will-change: opacity; }

/* ---------- figures / split media section ---------- */
.split { display: grid; gap: 2.5rem; align-items: center; }
.split__media { position: relative; }
.split__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; filter: saturate(.8) contrast(1.04); }
.split__media figcaption {
  margin-top: .9rem; font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: #6E6A78;
}
.split__body h2 { font-size: var(--step-3); max-width: 24ch; }
.split__body p { margin-top: 1.1rem; color: var(--muted); max-width: 50ch; }
.split--flip .split__media { order: 2; }
@media (min-width: 900px) {
  .split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4.5rem; }
}

/* ---------- library / tools ---------- */
.tools { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.tool { background: var(--bg); padding: clamp(1.4rem, 1rem + 2vw, 2.4rem); display: grid; gap: .9rem; align-content: start; transition: background-color .35s var(--ease); }
.tool:hover { background: var(--surface); }
.tool svg { color: var(--gold); }
.tool h3 { font-size: var(--step-1); }
.tool p { color: var(--muted); font-size: var(--step--1); }
.tool ul { display: grid; gap: .45rem; margin-top: .3rem; }
.tool li { font-size: .82rem; color: var(--ink-2); display: flex; gap: .6rem; align-items: baseline; }
.tool li::before { content: ""; width: 5px; height: 1px; background: var(--gold-dim); flex: none; transform: translateY(-4px); }
@media (min-width: 760px) { .tools { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .tools { grid-template-columns: repeat(3, 1fr); } }

.books { border-top: 1px solid var(--line); }
.book {
  display: grid; gap: .4rem 1.5rem; padding: 1.35rem 0; border-bottom: 1px solid var(--line);
  align-items: baseline; transition: color .25s var(--ease), padding-left .35s var(--ease-out);
}
.book:hover { color: var(--gold-soft); padding-left: .6rem; }
.book__t { font-family: var(--display); font-size: var(--step-1); color: inherit; }
.book__y { font-family: var(--mono); font-size: .72rem; color: var(--muted); letter-spacing: .1em; }
.book__d { color: var(--muted); font-size: var(--step--1); }
@media (min-width: 820px) {
  .book { grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); }
  .book__y { text-align: right; }
}

/* ---------- quadrant grid ---------- */
.quadrants { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.quad { background: var(--bg); padding: clamp(1.4rem, 1rem + 2vw, 2.2rem); display: grid; gap: .8rem; align-content: start; transition: background-color .35s var(--ease); }
.quad:hover { background: var(--surface); }
.quad__k { font-family: var(--display); font-size: var(--step-3); color: var(--gold); line-height: 1; }
.quad h3 { font-size: var(--step-1); }
.quad p { color: var(--muted); font-size: var(--step--1); }
.quad dl { display: grid; gap: .5rem; margin-top: .4rem; }
.quad dl div { display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); padding-top: .5rem; }
.quad dt { font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: #6E6A78; }
.quad dd { font-family: var(--mono); font-size: .78rem; color: var(--ink-2); text-align: right; }
@media (min-width: 780px) { .quadrants { grid-template-columns: repeat(2, 1fr); } }

/* ---------- quiz ---------- */
.quiz { border: 1px solid var(--line); background: var(--surface); padding: clamp(1.25rem, 1rem + 2vw, 2.5rem); }
.quiz__progress { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.75rem; }
.quiz__bar { flex: 1; height: 1px; background: var(--line-2); position: relative; }
.quiz__bar i { position: absolute; inset: 0; background: var(--gold); transform-origin: left; transform: scaleX(0); transition: transform .5s var(--ease-out); }
.quiz__count { font-family: var(--mono); font-size: .7rem; color: var(--muted); letter-spacing: .12em; flex: none; }
.quiz__q { font-family: var(--display); font-size: var(--step-2); color: var(--ink); max-width: 30ch; }
.quiz__opts { display: grid; gap: .6rem; margin-top: 1.5rem; }
.opt {
  display: flex; align-items: center; gap: .9rem; text-align: left;
  padding: .95rem 1.1rem; min-height: 48px; border: 1px solid var(--line-2); color: var(--ink-2);
  transition: border-color .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease), transform .14s var(--ease-out);
}
.opt i { width: 9px; height: 9px; border: 1px solid var(--line-2); flex: none; transition: background-color .2s var(--ease), border-color .2s var(--ease); }
.opt:hover { border-color: var(--gold); color: var(--ink); }
.opt:hover i { border-color: var(--gold); }
.opt:active { transform: scale(.99); }
.opt[aria-pressed="true"] { border-color: var(--gold); background: rgba(212,175,55,.08); color: var(--ink); }
.opt[aria-pressed="true"] i { background: var(--gold); border-color: var(--gold); }
.quiz__result { display: grid; gap: 1.25rem; }
.quiz__letter { font-family: var(--display); font-size: clamp(4rem, 14vw, 8rem); line-height: .85; color: var(--gold); }
.quiz__bars { display: grid; gap: .7rem; margin-top: 1rem; }
.quiz__bars div { display: grid; grid-template-columns: 3.5rem 1fr 2.5rem; align-items: center; gap: .8rem; }
.quiz__bars span { font-family: var(--mono); font-size: .72rem; color: var(--muted); }
.quiz__bars .bar { height: 3px; background: var(--line-2); position: relative; }
.quiz__bars .bar i { position: absolute; inset: 0; background: var(--gold); transform-origin: left; transform: scaleX(0); transition: transform .7s var(--ease-out); }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 1.5rem;
  padding: 1.35rem 0; cursor: pointer; list-style: none;
  font-family: var(--display); font-size: var(--step-1); color: var(--ink);
  transition: color .2s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--gold-soft); }
.faq summary::after {
  content: ""; flex: none; width: 12px; height: 12px; margin-top: .5rem;
  background:
    linear-gradient(var(--gold), var(--gold)) center/12px 1px no-repeat,
    linear-gradient(var(--gold), var(--gold)) center/1px 12px no-repeat;
  transition: transform .32s var(--ease-out);
}
.faq details[open] summary::after { transform: rotate(90deg); }
.faq .ans { padding: 0 0 1.6rem; max-width: 72ch; }
.faq .ans p + p { margin-top: .9rem; }
.faq .ans strong { color: var(--ink); font-weight: 500; }

/* ---------- forms + notice ---------- */
.form-status {
  display: flex; align-items: flex-start; gap: .6rem;
  font-size: .84rem; margin-top: 1rem; padding: .85rem 1rem;
  border: 1px solid var(--line-2); background: var(--bg);
}
.form-status svg { flex: none; margin-top: .18rem; }
.form-status--ok { border-color: rgba(127,176,154,.45); color: var(--sage); }
.form-status--err { border-color: rgba(224,113,94,.45); color: var(--rose); }
.form-status--info { color: var(--muted); }
.form-status[hidden] { display: none; }

.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.newsletter { background: var(--surface); border: 1px solid var(--line); padding: clamp(1.5rem, 1rem + 3vw, 3.25rem); display: grid; gap: 1.75rem; }
.newsletter h2 { font-size: var(--step-2); max-width: 24ch; }
.newsletter p { color: var(--muted); max-width: 52ch; }
.newsletter form { display: grid; gap: .8rem; }
@media (min-width: 780px) {
  .newsletter { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3rem; align-items: center; }
  .newsletter form { grid-template-columns: 1fr 1fr; }
  .newsletter form .field { margin-bottom: 0; }
  .newsletter form .btn, .newsletter form .form-status { grid-column: span 2; }
  .newsletter form .form-status { margin-top: 0; }
}

/* ---------- footer ---------- */
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--line); padding-block: clamp(3rem, 2rem + 4vw, 5rem) 2rem; }
.footer-grid { display: grid; gap: 2.5rem; }
.footer-brand { max-width: 34ch; }
.footer-brand p { color: var(--muted); font-size: var(--step--1); margin-top: 1rem; }
.footer-col h3 { font-family: var(--ui); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
.footer-col ul { display: grid; gap: .6rem; margin-top: 1.1rem; }
.footer-col a { font-size: .88rem; color: var(--ink-2); transition: color .2s var(--ease); }
.footer-col a:hover { color: var(--gold); }
.footer-bottom { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); display: grid; gap: 1rem; }
.footer-bottom p { font-size: .74rem; color: #6E6A78; max-width: 90ch; }
.footer-bottom .legal { display: flex; flex-wrap: wrap; gap: 1.25rem; }
@media (min-width: 820px) {
  .footer-grid { grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 3rem; }
  .footer-bottom { grid-template-columns: 1fr auto; align-items: center; }
}

/* ---------- inner page hero ---------- */
.pagehead { padding-block: calc(var(--header-h) + clamp(3rem, 2rem + 6vw, 6rem)) clamp(2rem, 1rem + 3vw, 3.5rem); border-bottom: 1px solid var(--line); }
.pagehead h1 { font-size: var(--step-4); max-width: 22ch; }
.pagehead p { margin-top: 1.25rem; color: var(--muted); max-width: 56ch; font-size: var(--step-1); }
.crumbs { display: flex; gap: .6rem; align-items: center; font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: #6E6A78; margin-bottom: 1.75rem; }
.crumbs a:hover { color: var(--gold); }

/* ---------- lesson detail ---------- */
.lesson-detail { padding-block: clamp(2.5rem, 2rem + 4vw, 4.5rem); border-bottom: 1px solid var(--line); display: grid; gap: 2rem; }
.lesson-detail__no { font-family: var(--display); font-size: var(--step-4); color: rgba(212,175,55,.28); line-height: .8; }
.lesson-detail h2 { font-size: var(--step-3); max-width: 22ch; }
.lesson-detail__body { display: grid; gap: 1.15rem; max-width: 62ch; }
.lesson-detail__body p { color: var(--ink-2); }
.lesson-detail__body p strong { color: var(--ink); font-weight: 500; }
.pull {
  margin-top: .5rem; padding: 1.35rem 0 1.35rem 1.35rem; border-left: 1px solid var(--rule);
  font-family: var(--display); font-size: var(--step-1); color: var(--ink); max-width: 44ch;
}
.takeaway { display: grid; gap: .6rem; align-content: start; }
.takeaway h3 { font-family: var(--ui); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
.takeaway li { font-size: .86rem; color: var(--ink-2); display: flex; gap: .6rem; }
.takeaway li svg { color: var(--gold); flex: none; margin-top: .35rem; }
@media (min-width: 940px) {
  .lesson-detail { grid-template-columns: minmax(0, 4.5rem) minmax(0, 1fr) minmax(0, .8fr); gap: 3rem; align-items: start; }
}

/* ---------- steps (ten steps) ---------- */
.steps { counter-reset: step; display: grid; gap: 0; border-top: 1px solid var(--line); }
.steps li {
  counter-increment: step; padding: 1.5rem 0; border-bottom: 1px solid var(--line);
  display: grid; gap: .5rem 1.5rem; align-items: baseline;
}
.steps li::before {
  content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: .72rem;
  letter-spacing: .14em; color: var(--gold);
}
.steps h3 { font-size: var(--step-1); }
.steps p { color: var(--muted); font-size: var(--step--1); max-width: 58ch; }
@media (min-width: 820px) {
  .steps li { grid-template-columns: 3rem minmax(0, .9fr) minmax(0, 1.3fr); }
  .steps li p { padding-top: .35rem; }
}

/* ---------- auth / account ---------- */
.auth { display: grid; gap: 2.5rem; padding-block: calc(var(--header-h) + 3rem) clamp(4rem, 3rem + 6vw, 7rem); }
.auth__card { border: 1px solid var(--line); background: var(--surface); padding: clamp(1.4rem, 1rem + 2.5vw, 2.5rem); }
.auth__tabs { display: flex; gap: .5rem; margin-bottom: 1.75rem; }
.auth__aside h1, .auth__aside h2 { font-size: var(--step-3); max-width: 20ch; }
.auth__aside h1 { line-height: 1.08; }
.auth__aside ul { margin-top: 1.5rem; display: grid; gap: .8rem; }
.auth__aside li { display: flex; gap: .7rem; color: var(--muted); font-size: .9rem; }
.auth__aside li svg { color: var(--gold); flex: none; margin-top: .3rem; }
@media (min-width: 900px) { .auth { grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: 4rem; align-items: start; } .auth__aside { order: -1; } }

/* ---------- plan ---------- */
.plan { display: grid; gap: 2rem; }
.plan__figures { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.plan__figures div { background: var(--bg); padding: 1.1rem 1.25rem; }
.plan__figures dt { font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.plan__figures dd { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 1.4rem; color: var(--ink); margin-top: .4rem; }
.plan__figures .gold dd { color: var(--gold); }
.plan__form { border: 1px solid var(--line); background: var(--surface); padding: clamp(1.25rem, 1rem + 2vw, 2.25rem); }
@media (min-width: 900px) { .plan { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 3rem; align-items: start; } .plan__figures { position: sticky; top: calc(var(--header-h) + 2rem); } }

/* ---------- 404 ---------- */
.lost { min-height: 100svh; display: grid; place-content: center; text-align: center; padding: calc(var(--header-h) + 3rem) var(--gut) 4rem; gap: 1.5rem; }
.lost h1 { font-size: var(--step-4); }
.lost p { color: var(--muted); max-width: 46ch; margin-inline: auto; }
.lost .hero__ctas { justify-content: center; }

/* ---------- prose (privacy) ---------- */
.prose { max-width: 70ch; display: grid; gap: 1.15rem; }
.prose h2 { font-size: var(--step-2); margin-top: 2rem; }
.prose h3 { font-size: var(--step-1); margin-top: 1rem; }
.prose ul { display: grid; gap: .6rem; }
.prose li { display: flex; gap: .7rem; color: var(--ink-2); }
.prose li::before { content: ""; width: 6px; height: 1px; background: var(--gold-dim); flex: none; transform: translateY(-6px); margin-top: .9rem; }
.prose a { color: var(--gold); border-bottom: 1px solid var(--gold-dim); }

/* ---------- utilities ---------- */
.u-mt-1 { margin-top: 1rem; } .u-mt-2 { margin-top: 2rem; } .u-mt-3 { margin-top: 3rem; }
.u-mt-4 { margin-top: 4rem; } .u-mt-6 { margin-top: 6rem; }
.u-center { text-align: center; }
.u-flex { display: flex; flex-wrap: wrap; gap: .9rem; }
.u-hidden { display: none !important; }

/* ---------- reveal ----------
   .motion is set by a tiny inline script only when animation will really run,
   so readers without scripts (or with reduced motion) see the full page. */
.motion [data-reveal] { opacity: 0; }

/* ---------- breakpoints ---------- */
@media (min-width: 600px) {
  .hero__facts { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  :root { --gut: 2rem; --header-h: 76px; }
  .hero__facts { grid-template-columns: repeat(4, 1fr); }
  .scroll-cue { display: flex; }
  .nav { display: block; }
  .burger { display: none; }
  .brand__sub { display: block; }
}
@media (min-width: 1200px) {
  .rail {
    display: block; position: fixed; left: 1.1rem; top: 50%; z-index: 50;
    transform: translateY(-50%) rotate(180deg); writing-mode: vertical-rl;
    font-family: var(--mono); font-size: .62rem; letter-spacing: .32em; text-transform: uppercase;
    color: #4A4654; pointer-events: none;
  }
}
@media print { .site-header, .rail, .newsletter, .scroll-cue { display: none; } body { background: #fff; color: #000; } }