/* PhysicsBase homepage — a lab notebook for machines.
   Layout: one framed column with hairline edges and "+" registration marks; a full-width
   dithered particle simulation is the single loud element. Highlighter yellow marks what matters.
   Deliberately light-only: the page is paper. */
:root {
  --paper: #ffffff;
  --wash: #f4f5f7;          /* quiet panels */
  --ink: #121316;           /* text, borders, buttons */
  --ink-2: #5b5f6b;         /* secondary text */
  --rule: #e2e4ea;          /* hairlines */
  --marker: #ffe14a;        /* highlighter */
  --marker-soft: #fff6c4;
  --red: #f0412b;           /* rogue, revoke */
  --ok: #10935f;
  --sky: #dfe7f3;           /* simulation ground */
  --code: #15171c;
  --code-ink: #e6e8ee;
  --sans: 'Host Grotesk', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --pixel: 'Silkscreen', 'Geist Mono', ui-monospace, monospace;
  --ease: cubic-bezier(.2, .8, .2, 1);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1rem/1.6 var(--sans); overflow-x: clip; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -100px; z-index: 50; background: var(--ink); color: var(--paper); padding: 0.5rem 1rem; }
.skip:focus { top: calc(env(safe-area-inset-top, 0px) + 12px); }

/* ---------- the frame ---------- */
.frame {
  position: relative; max-width: 1200px; margin-inline: auto;
  border-inline: 1px solid var(--rule);
  padding-left: max(24px, env(safe-area-inset-left, 0px)); padding-right: max(24px, env(safe-area-inset-right, 0px));
}
main > section { border-top: 1px solid var(--rule); padding-block: clamp(3.5rem, 8vw, 6.5rem); }
main > section:first-child { border-top: 0; }
main > section::before, main > section::after { /* registration marks */
  content: '+'; position: absolute; top: -0.78em; font: 400 18px/1 var(--mono); color: var(--ink-2);
}
main > section::before { left: -0.33em; }
main > section::after { right: -0.33em; }
main > section:first-child::before, main > section:first-child::after { display: none; }

.h2 { font: 700 clamp(1.7rem, 3.4vw, 2.6rem)/1.08 var(--sans); letter-spacing: -0.035em; max-width: 24ch; }
.sub { color: var(--ink-2); font-size: 1.08rem; max-width: 56ch; margin-top: 0.9rem; }
.sec-head { margin-bottom: clamp(2rem, 4vw, 3rem); }

/* ---------- pixel icons ---------- */
.px-icon { display: inline-block; width: 1.15em; height: 1.15em; flex: none; vertical-align: -0.18em; }
.px-icon svg { display: block; width: 100%; height: 100%; shape-rendering: crispEdges; overflow: visible; }
.px-icon rect { fill: currentColor; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  min-height: 50px; padding: 0.7rem 1.3rem; border: 1.5px solid var(--ink); border-radius: 0;
  font-weight: 600; text-decoration: none; cursor: pointer;
  box-shadow: 4px 4px 0 var(--ink); transition: transform 0.12s steps(2), box-shadow 0.12s steps(2), background 0.15s;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--ink); }
.btn-ink { background: var(--ink); color: var(--paper); box-shadow: 4px 4px 0 var(--marker); }
.btn-ink:hover { box-shadow: 6px 6px 0 var(--marker); }
.btn-ink:active { box-shadow: 0 0 0 var(--marker); }
.btn-line { background: var(--paper); color: var(--ink); }
.btn-small { min-height: 40px; padding: 0.45rem 0.95rem; font-size: 0.92rem; box-shadow: 3px 3px 0 var(--marker); }
.btn .px-icon { transition: transform 0.2s steps(3); }
.btn:hover .px-icon { transform: translateX(4px); }

.cmd {
  display: inline-flex; align-items: center; gap: 0.7rem; min-height: 50px; padding: 0.6rem 0.9rem 0.6rem 1rem;
  border: 1.5px dashed var(--ink); background: var(--wash); cursor: pointer; font: 400 0.92rem var(--mono); text-align: left; max-width: 100%;
  transition: background 0.15s, border-style 0.15s;
}
.cmd:hover { background: var(--marker-soft); border-style: solid; }
.cmd-prompt { color: var(--ink-2); }
.cmd-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.cmd-state { display: inline-grid; place-items: center; width: 26px; height: 26px; background: var(--paper); border: 1px solid var(--rule); }
.cmd.done { background: var(--marker); border-style: solid; }
.cmd.done .cmd-state { color: var(--ok); }

/* ---------- nav ---------- */
body::before { content: ''; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--paper); }
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.nav-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 66px; }
.logo { display: inline-flex; align-items: center; gap: 0.55rem; font: 800 1.15rem var(--sans); letter-spacing: -0.04em; text-decoration: none; }
.logo-icon { width: 26px; height: 26px; }
.logo-icon rect.y { fill: var(--marker); }
.nav-links { display: flex; align-items: center; gap: clamp(0.9rem, 2.2vw, 1.9rem); }
.nav-links a:not(.btn) { text-decoration: none; color: var(--ink-2); font-weight: 500; background: linear-gradient(var(--marker), var(--marker)) no-repeat 0 85% / 0% 40%; transition: background-size 0.25s var(--ease), color 0.2s; }
.nav-links a:not(.btn):hover { color: var(--ink); background-size: 100% 40%; }

/* ---------- hero ---------- */
.hero { padding-top: clamp(3rem, 7vw, 5.5rem); }
.headline { font: 800 clamp(2.5rem, 6.6vw, 5.6rem)/0.98 var(--sans); letter-spacing: -0.05em; }
.hl { display: block; }
.hl > span {
  -webkit-box-decoration-break: clone; box-decoration-break: clone; padding: 0 0.12em; margin-left: -0.12em;
  background: linear-gradient(var(--marker), var(--marker)) no-repeat 0 62% / 100% 58%;
  animation: mark 0.9s var(--ease) both;
}
.hl:nth-child(2) > span { animation-delay: 0.25s; }
@keyframes mark { from { background-size: 0% 58%; } }
.lede { font-size: clamp(1.08rem, 1.5vw, 1.25rem); color: var(--ink-2); max-width: 56ch; margin-top: 1.6rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; align-items: center; }

/* ---------- simulation ---------- */
.sim { position: relative; margin: clamp(2.5rem, 5vw, 3.5rem) 0 0; border: 1.5px solid var(--ink); background: var(--sky); box-shadow: 8px 8px 0 var(--ink); }
.field { display: block; width: 100%; height: clamp(280px, 36vw, 440px); image-rendering: pixelated; cursor: crosshair; }
.sim-label, .sim-apps li {
  position: absolute; font: 400 0.72rem/1 var(--pixel); letter-spacing: 0.04em; text-transform: uppercase;
  background: var(--paper); border: 1px solid var(--ink); padding: 0.32rem 0.45rem; pointer-events: none;
}
.gate-label { left: 46%; top: 12px; transform: translateX(-50%); background: var(--marker); }
.gate-label.closed { background: var(--red); color: var(--paper); }
.spawn-label { left: 12px; top: 12px; }
.sim-apps { position: absolute; top: 0; right: 0; width: 0; height: clamp(280px, 36vw, 440px); }
.sim-apps li { right: 12px; white-space: nowrap; transform: translateY(-50%); transition: background 0.1s, transform 0.15s steps(2); }
.sim-apps li[data-app="0"] { top: 18%; } .sim-apps li[data-app="1"] { top: 38%; }
.sim-apps li[data-app="2"] { top: 58%; } .sim-apps li[data-app="3"] { top: 78%; }
.sim-apps li.hit { background: var(--marker); transform: translateY(-50%) scale(1.08); }
.hud { display: flex; justify-content: space-between; align-items: center; gap: 1rem 2rem; flex-wrap: wrap; padding: 0.9rem 1rem; background: var(--paper); border-top: 1.5px solid var(--ink); }
.hud-stats { display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; margin: 0; }
.hud-stats div { display: flex; flex-direction: column-reverse; }
.hud-stats dt { font: 400 0.66rem/1.3 var(--pixel); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); }
.hud-stats dd { margin: 0; font: 700 1.5rem/1.1 var(--sans); font-variant-numeric: tabular-nums; letter-spacing: -0.03em; }
.hud-stats .zero dd { background: var(--marker); padding: 0 0.3rem; align-self: flex-start; }
.hud-stats dd.bump { animation: bump 0.25s steps(2); }
@keyframes bump { 50% { transform: translateY(-3px); } }
.hud-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.px-btn {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 0.75rem; cursor: pointer;
  font: 400 0.72rem/1 var(--pixel); text-transform: uppercase; letter-spacing: 0.04em;
  background: var(--paper); border: 1.5px solid var(--ink); box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.1s steps(2), box-shadow 0.1s steps(2), background 0.15s;
}
.px-btn:hover { background: var(--marker-soft); }
.px-btn:active { transform: translate(3px, 3px); box-shadow: 0 0 0 var(--ink); }
.px-btn-red { color: var(--red); border-color: var(--red); box-shadow: 3px 3px 0 var(--red); }
.px-btn-red[aria-pressed="true"] { background: var(--red); color: var(--paper); }

.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: clamp(2.5rem, 5vw, 3.5rem); border: 1px solid var(--rule); }
.facts li { padding: 1.2rem 1.25rem; border-left: 1px solid var(--rule); display: flex; flex-direction: column; gap: 0.25rem; }
.facts li:first-child { border-left: 0; }
.facts strong { font: 800 1.9rem/1 var(--sans); letter-spacing: -0.04em; }
.facts span { color: var(--ink-2); font-size: 0.95rem; }

/* ---------- ways ---------- */
.way-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--ink); }
.way { display: flex; flex-direction: column; gap: 0.75rem; padding: 1.6rem 1.5rem 1.5rem; border-left: 1px solid var(--ink); min-width: 0; }
.way:first-child { border-left: 0; }
.way-main { background: var(--marker-soft); }
.way-icon { width: 36px; height: 36px; }
.way h3 { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.02em; display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.opt { font: 400 0.62rem/1 var(--pixel); text-transform: uppercase; letter-spacing: 0.05em; padding: 0.28rem 0.4rem; border: 1px solid var(--ink-2); color: var(--ink-2); }
.way p { color: var(--ink-2); flex: 1; }
.snippet { margin: 0.5rem 0 0; padding: 0.85rem 1rem; background: var(--code); color: var(--code-ink); font: 400 0.78rem/1.7 var(--mono); overflow-x: auto; }
.snippet .dim { color: #8a8f9c; } .snippet .ok { color: #8ef0bd; }

/* ---------- guardrails ---------- */
.guard-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.guard-grid li { padding: 1.6rem 1.5rem 1.8rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); transition: background 0.2s; }
.guard-grid li:hover { background: var(--wash); }
.guard-grid .px-icon { width: 30px; height: 30px; }
.guard-grid li:hover .px-icon rect { animation: assemble 0.45s steps(4) both; animation-delay: var(--d, 0s); }
@keyframes assemble { from { transform: translate(var(--dx, 0), var(--dy, 0)); opacity: 0; } }
.guard-grid h3 { font-size: 1.12rem; font-weight: 700; margin: 1rem 0 0.35rem; letter-spacing: -0.015em; }
.guard-grid p { color: var(--ink-2); }

/* ---------- token ---------- */
.token-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.explain { margin-top: 2rem; padding: 1.25rem 1.35rem; border: 1.5px solid var(--ink); background: var(--marker-soft); min-height: 150px; box-shadow: 5px 5px 0 var(--ink); }
.explain h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 0.35rem; }
.explain p { color: var(--ink-2); }
.explain.swap h3, .explain.swap p { animation: blink 0.3s steps(3); }
@keyframes blink { from { opacity: 0; } }
.jwt { border: 1.5px solid var(--ink); background: var(--paper); min-width: 0; }
.win-bar { display: flex; align-items: center; gap: 0.4rem; padding: 0.65rem 0.9rem; border-bottom: 1.5px solid var(--ink); background: var(--wash); }
.win-bar > span:not(.win-name) { width: 10px; height: 10px; border: 1.5px solid var(--ink); }
.win-name { margin-left: 0.5rem; font: 400 0.68rem/1 var(--pixel); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); }
.jwt-code { margin: 0; padding: 1rem 1.2rem 1.3rem; overflow-x: auto; font: 400 0.86rem/2 var(--mono); color: var(--ink-2); }
.claim { font: inherit; color: var(--ink); background: transparent; border: 0; padding: 0.1rem 0.4rem; margin: 0 -0.4rem; cursor: pointer; text-align: left; transition: background 0.12s; }
.claim:hover { background: var(--wash); }
.claim.is-on { background: var(--marker); }

/* ---------- developers ---------- */
.dev-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.ticks { margin-top: 1.75rem; display: grid; gap: 0.7rem; }
.ticks li { display: flex; gap: 0.7rem; align-items: center; }
.ticks .px-icon { color: var(--ok); }
.code-card { border: 1.5px solid var(--ink); background: var(--code); box-shadow: 8px 8px 0 var(--marker); min-width: 0; }
.tabs { position: relative; display: flex; align-items: stretch; background: var(--paper); border-bottom: 1.5px solid var(--ink); overflow-x: auto; }
.tab { position: relative; z-index: 1; padding: 0.8rem 1.1rem; border: 0; border-right: 1px solid var(--rule); background: none; cursor: pointer; white-space: nowrap; font-weight: 500; color: var(--ink-2); transition: color 0.15s; }
.tab[aria-selected="true"] { color: var(--ink); }
.tab-ink { position: absolute; left: 0; bottom: 0; height: 4px; width: 0; background: var(--marker); transition: transform 0.3s var(--ease), width 0.3s var(--ease); }
.copy { margin-left: auto; display: inline-flex; align-items: center; gap: 0.45rem; padding: 0 1rem; border: 0; border-left: 1px solid var(--rule); background: none; cursor: pointer; font: 400 0.7rem var(--pixel); text-transform: uppercase; color: var(--ink-2); }
.copy:hover { color: var(--ink); background: var(--marker-soft); }
.copy.done { color: var(--ok); }
.code { margin: 0; padding: 1.25rem 1.35rem 1.5rem; overflow-x: auto; font: 400 0.84rem/1.75 var(--mono); color: var(--code-ink); }
.code .k { color: #9fc2ff; } .code .s { color: var(--marker); } .code .c { color: #7e8494; }

/* ---------- compare ---------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--ink); }
table { width: 100%; border-collapse: collapse; min-width: 780px; }
th, td { text-align: left; padding: 0.95rem 1.1rem; border-bottom: 1px solid var(--rule); vertical-align: top; font-size: 0.97rem; }
tbody tr:last-child > * { border-bottom: 0; }
thead th { font: 400 0.7rem/1.3 var(--pixel); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); border-bottom: 1px solid var(--ink); }
tbody th { font-weight: 600; }
td { color: var(--ink-2); }
td::before { display: inline-block; width: 1.2rem; font-weight: 800; }
td.yes::before { content: '✓'; color: var(--ok); }
td.no::before { content: '✕'; color: var(--red); }
td.part::before { content: '~'; color: #b07b00; }
.us { background: var(--marker-soft); color: var(--ink); font-weight: 600; }
thead .us { background: var(--marker); color: var(--ink); }

/* ---------- final ---------- */
.final { text-align: left; }
.final-h { font: 800 clamp(2rem, 5vw, 4rem)/1.02 var(--sans); letter-spacing: -0.045em; max-width: 20ch; }
.final .hl > span { animation: none; }

.foot { border-top: 1px solid var(--rule); }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; padding-block: 2rem 3rem; }
.foot-links { display: flex; gap: 1.5rem; }
.foot-links a { color: var(--ink-2); text-decoration: none; }
.foot-links a:hover { color: var(--ink); }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .token-grid, .dev-grid { grid-template-columns: minmax(0, 1fr); }
  .way-grid { grid-template-columns: minmax(0, 1fr); }
  .way { border-left: 0; border-top: 1px solid var(--ink); }
  .way:first-child { border-top: 0; }
  .guard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts li:nth-child(3) { border-left: 0; }
  .facts li:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 640px) {
  .frame { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .hide-sm { display: none; }
  main > section::before, main > section::after { display: none; }
  .guard-grid { grid-template-columns: minmax(0, 1fr); }
  .sim { box-shadow: 5px 5px 0 var(--ink); }
  .field, .sim-apps { height: 300px; }
  .gate-label { top: 8px; }
  .spawn-label { display: none; }
  .sim-apps li { font-size: 0.6rem; right: 6px; }
  .hud-actions { width: 100%; }
  .px-btn { flex: 1 1 auto; justify-content: center; }
  .cmd { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ---------- eyebrows ---------- */
.eyebrow { font: 400 0.72rem/1.3 var(--pixel); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); margin-bottom: 1rem; }
.hero .eyebrow { display: inline-block; background: var(--ink); color: var(--paper); padding: 0.35rem 0.55rem; margin-bottom: 1.4rem; }

/* ---------- what you get ---------- */
.pillars { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1.5px solid var(--ink); box-shadow: 8px 8px 0 var(--ink); background: var(--paper); }
.pillars li { position: relative; display: flex; flex-direction: column; gap: 0.6rem; padding: 1.5rem 1.35rem 1.4rem; border-left: 1px solid var(--ink); min-width: 0; transition: background 0.2s; }
.pillars li:first-child { border-left: 0; }
.pillars li:hover { background: var(--marker-soft); }
.pillars li:hover .px-icon rect { animation: assemble 0.45s steps(4) both; animation-delay: var(--d, 0s); }
.pillars .num { position: absolute; top: 1.2rem; right: 1.2rem; font: 400 0.72rem/1 var(--pixel); color: var(--ink-2); }
.pillar-icon { width: 34px; height: 34px; }
.pillars h3 { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.03em; margin-top: 0.4rem; }
.pillars p { color: var(--ink-2); }
.pillars .gain { margin-top: auto; padding-top: 0.9rem; border-top: 1px dashed var(--rule); color: var(--ink); font-weight: 600; }
.for { margin-top: 2.2rem; color: var(--ink-2); max-width: 70ch; }
.for .eyebrow { display: inline; margin-right: 0.5rem; color: var(--ink); background: var(--marker); padding: 0.2rem 0.4rem; }

/* ---------- demos ---------- */
.cases { display: grid; grid-template-columns: minmax(0, 0.42fr) minmax(0, 1fr); gap: clamp(1.25rem, 3vw, 2.25rem); align-items: start; }
.case-list { display: grid; gap: 0.6rem; }
.case-tab {
  position: relative; display: flex; gap: 0.9rem; align-items: flex-start; text-align: left; cursor: pointer; overflow: hidden;
  padding: 0.9rem 1rem; background: var(--paper); border: 1.5px solid var(--rule);
  transition: border-color 0.15s, background 0.15s, transform 0.12s steps(2), box-shadow 0.12s steps(2);
}
.case-tab:hover { border-color: var(--ink); }
.case-tab[aria-selected="true"] { border-color: var(--ink); background: var(--marker-soft); box-shadow: 4px 4px 0 var(--ink); transform: translate(-2px, -2px); }
.case-tab strong { display: block; font-weight: 700; letter-spacing: -0.01em; }
.case-tab small { display: block; color: var(--ink-2); font-size: 0.88rem; line-height: 1.4; margin-top: 0.15rem; }
.case-n { flex: none; display: grid; place-items: center; width: 26px; height: 26px; border: 1.5px solid var(--ink); font: 400 0.72rem/1 var(--pixel); background: var(--paper); }
.case-tab[aria-selected="true"] .case-n { background: var(--ink); color: var(--marker); }
.case-tab::after { /* autoplay progress */
  content: ''; position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--ink);
  transform: scaleX(var(--p, 0)); transform-origin: left; transition: transform var(--t, 0s) linear;
}

.stage { border: 1.5px solid var(--ink); background: var(--paper); box-shadow: 8px 8px 0 var(--marker); min-width: 0; }
.replay { margin-left: auto; display: inline-flex; align-items: center; gap: 0.4rem; background: none; border: 1px solid var(--ink-2); padding: 0.3rem 0.5rem; cursor: pointer; font: 400 0.64rem/1 var(--pixel); text-transform: uppercase; color: var(--ink-2); }
.replay:hover { color: var(--ink); border-color: var(--ink); background: var(--marker-soft); }
.seq { position: relative; padding: 0.4rem 0 1rem; background:
  linear-gradient(var(--sky), var(--sky)) 0 0 / 100% 100%; min-height: 412px; }
.lanes { display: grid; grid-template-columns: repeat(var(--n, 3), minmax(0, 1fr)); position: relative; z-index: 1; }
.lane { display: flex; justify-content: center; padding: 0.7rem 0.4rem 0.4rem; }
.lane span { font: 400 0.68rem/1 var(--pixel); text-transform: uppercase; letter-spacing: 0.04em; background: var(--paper); border: 1px solid var(--ink); padding: 0.35rem 0.5rem; white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
.lane.hot span { background: var(--marker); }
.seq::before { /* lifelines */
  content: ''; position: absolute; inset: 2.6rem 0 0.4rem; pointer-events: none;
  background: var(--lifelines); opacity: 0.35;
}
.rows { position: relative; z-index: 1; display: grid; gap: 0.15rem; padding-top: 0.6rem; }
.row { position: relative; height: 44px; opacity: 0; transition: opacity 0.2s steps(2); }
.row.on { opacity: 1; }
.row.past { opacity: 0.55; }
.arrow { position: absolute; top: 28px; height: 2px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform 0.9s steps(10); }
.arrow.rtl { transform-origin: right; }
.row.on .arrow { transform: scaleX(1); }
.arrow::after { content: ''; position: absolute; top: -4px; border: 5px solid transparent; }
.arrow:not(.rtl)::after { right: -4px; border-left: 7px solid currentColor; border-right: 0; }
.arrow.rtl::after { left: -4px; border-right: 7px solid currentColor; border-left: 0; }
.arrow { color: var(--ink); }
.row.deny .arrow { background: var(--red); color: var(--red); }
.row.secret .arrow { background: var(--ink); height: 4px; top: 27px; box-shadow: 0 0 0 2px var(--marker); }
.label { position: absolute; top: 2px; transform: translateX(-50%); max-width: 46%; font: 400 0.74rem/1.35 var(--mono); background: var(--paper); border: 1px solid var(--rule); padding: 0.12rem 0.4rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row.deny .label { border-color: var(--red); color: var(--red); }
.row.secret .label { background: var(--marker); border-color: var(--ink); }
.badge { position: absolute; top: 9px; transform: translateX(-50%); font: 400 0.68rem/1 var(--pixel); text-transform: uppercase; letter-spacing: 0.03em; padding: 0.45rem 0.55rem; border: 1.5px solid var(--ink); background: var(--paper); white-space: nowrap; max-width: 48%; overflow: hidden; text-overflow: ellipsis; }
.row.on .badge { animation: pop 0.3s steps(3); }
@keyframes pop { from { transform: translateX(-50%) scale(0.6); } }
.badge.ok { background: #d9f5e7; border-color: var(--ok); color: #0b6b45; }
.badge.deny { background: var(--red); border-color: var(--red); color: var(--paper); }
.badge.warn { background: var(--marker); }
.badge.log { background: var(--ink); color: var(--paper); }
.narrate { display: flex; gap: 1rem; align-items: baseline; padding: 0.95rem 1.1rem; border-top: 1.5px solid var(--ink); min-height: 4.6rem; }
.step-n { flex: none; font: 400 0.68rem/1 var(--pixel); text-transform: uppercase; color: var(--ink-2); min-width: 4.5rem; }
#narration { font-weight: 500; }
#narration.swap { animation: blink 0.3s steps(3); }
.outcome { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); margin: 0; border-top: 1px solid var(--rule); }
.outcome div { padding: 0.9rem 1.1rem 1rem; }
.outcome .after { border-left: 1px solid var(--rule); background: var(--marker-soft); }
.outcome dt { font: 400 0.64rem/1.3 var(--pixel); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.3rem; }
.outcome .before dt { color: var(--red); }
.outcome dd { margin: 0; font-size: 0.95rem; color: var(--ink-2); }
.outcome .after dd { color: var(--ink); }

/* ---------- offer ---------- */
.offer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2rem); }
.plan { display: flex; flex-direction: column; gap: 0.4rem; padding: 1.75rem 1.6rem; border: 1.5px solid var(--ink); background: var(--paper); }
.plan-main { background: var(--marker-soft); box-shadow: 8px 8px 0 var(--ink); }
.plan h3 { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.plan .price { font: 800 2.2rem/1.1 var(--sans); letter-spacing: -0.04em; }
.plan .ticks { margin: 1rem 0 1.6rem; flex: 1; }
.plan .ticks li { align-items: flex-start; }
.plan .ticks .px-icon { margin-top: 0.3rem; }
.plan .btn { align-self: flex-start; }

@media (max-width: 960px) {
  .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pillars li:nth-child(3) { border-left: 0; }
  .pillars li:nth-child(n+3) { border-top: 1px solid var(--ink); }
  .cases { grid-template-columns: minmax(0, 1fr); }
  .case-list { display: flex; overflow-x: auto; padding: 0 6px 8px 0; scroll-snap-type: x mandatory; }
  .case-tab { flex: 0 0 min(250px, 72%); scroll-snap-align: start; }
}
@media (max-width: 640px) {
  .pillars { grid-template-columns: minmax(0, 1fr); box-shadow: 5px 5px 0 var(--ink); }
  .pillars li { border-left: 0; }
  .pillars li + li { border-top: 1px solid var(--ink); }
  .offer-grid, .outcome { grid-template-columns: minmax(0, 1fr); }
  .outcome .after { border-left: 0; border-top: 1px solid var(--rule); }
  .stage { box-shadow: 5px 5px 0 var(--marker); }
  .label { font-size: 0.66rem; max-width: 60%; }
  .lane span { font-size: 0.58rem; padding: 0.3rem 0.35rem; }
  .badge { font-size: 0.58rem; max-width: 62%; }
  .narrate { flex-direction: column; gap: 0.35rem; }
}
.free-note { display: flex; align-items: center; gap: 0.5rem; margin-top: 1.1rem; color: var(--ink-2); font-size: 0.95rem; }
.free-note .px-icon { color: var(--ok); }
.ticks code { font: 400 0.86em var(--mono); background: var(--wash); padding: 0.05rem 0.3rem; }
.free-note { align-items: flex-start; }
.free-note .px-icon { margin-top: 0.2rem; }
.foot-links { flex-wrap: wrap; gap: 0.75rem 1.5rem; }

/* ---- the problem ---- */
.problem-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 1.5rem); }
.problem-grid li { display: flex; flex-direction: column; gap: 0.6rem; padding: 1.5rem 1.4rem; border: 1.5px solid var(--ink); background: var(--paper); }
.problem-grid h3 { display: flex; align-items: center; gap: 0.65rem; font-size: 1.15rem; font-weight: 700; letter-spacing: -0.015em; }
.problem-grid h3 .px-icon { width: 26px; height: 26px; flex: none; color: var(--red); }
.problem-grid p { color: var(--ink-2); }
.problem-grid .fix { margin-top: auto; padding-top: 0.75rem; border-top: 1px dashed var(--rule); color: var(--ink); font-weight: 500; display: flex; gap: 0.55rem; align-items: flex-start; }
.problem-grid .fix .px-icon { color: var(--ok); flex: none; margin-top: 0.2rem; }

/* ---- why / fair questions ---- */
.why-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2rem); }
.why-card { padding: 1.6rem 1.5rem; border: 1.5px solid var(--ink); background: var(--paper); display: flex; flex-direction: column; gap: 0.8rem; }
.why-card:first-child { background: var(--marker-soft); box-shadow: 6px 6px 0 var(--ink); }
.why-card h3 { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; }
.why-card p { color: var(--ink-2); }
.why-card .ticks { margin-top: 0.2rem; }
.why-card .ticks li { align-items: flex-start; }
.why-card .ticks .px-icon { margin-top: 0.3rem; flex: none; }
.faq-title { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; margin: clamp(2.5rem, 5vw, 3.5rem) 0 1rem; }
.faq { border-top: 1.5px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; padding: 1.05rem 2.5rem 1.05rem 0; font-weight: 600; font-size: 1.05rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 0.5rem; top: 50%; transform: translateY(-50%); font: 700 1.3rem/1 var(--mono); }
.faq details[open] summary::after { content: '\2212'; }
.faq summary:hover { background: linear-gradient(var(--marker-soft), var(--marker-soft)); }
.faq summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.faq details p { color: var(--ink-2); padding: 0 0 1.2rem; max-width: 72ch; }
@media (max-width: 760px) {
  .problem-grid, .why-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---- 60-second demo video ---- */
.film-grid { display: grid; grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr); gap: clamp(1.25rem, 3vw, 2rem); align-items: start; }
.film-screen { margin: 0; border: 3px solid var(--ink); background: var(--ink); box-shadow: 8px 8px 0 var(--marker); min-width: 0; }
.film-screen video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: var(--ink); image-rendering: pixelated; }
.film-levels { display: grid; gap: 0.45rem; }
.film-levels button { width: 100%; text-align: left; display: grid; gap: 0.15rem; padding: 0.6rem 0.85rem; border: 1.5px solid var(--ink); background: var(--paper); color: var(--ink); font: inherit; cursor: pointer; transition: background 0.12s, transform 0.12s steps(2), box-shadow 0.12s steps(2); }
.film-levels button:hover { background: var(--marker-soft); transform: translate(-2px, -2px); box-shadow: 3px 3px 0 var(--ink); }
.film-levels button:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.film-levels button[aria-current="true"] { background: var(--marker); }
.film-levels .lv { font: 400 0.72rem/1 var(--pixel); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); }
.film-levels button[aria-current="true"] .lv { color: var(--ink); }
.film-levels strong { font-size: 1.02rem; letter-spacing: -0.01em; }
.film-levels small { color: var(--ink-2); font-size: 0.86rem; line-height: 1.35; }
.watch-link { margin-top: 0.9rem; }
.watch-link a { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--ink); font-weight: 600; text-decoration: none; background: linear-gradient(var(--marker), var(--marker)) no-repeat 0 88% / 100% 35%; padding: 0 0.15rem; }
.watch-link a:hover { background-size: 100% 100%; }
.play-tri { width: 0; height: 0; border-left: 9px solid var(--ink); border-top: 6px solid transparent; border-bottom: 6px solid transparent; }
@media (max-width: 960px) {
  .film-grid { grid-template-columns: minmax(0, 1fr); }
  .film-levels { grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }
}