/* AlphaNoted — marketing site
   Tokens follow the Alpha Efficiency design language: Inter + Lora, AE palette,
   8 px grid, radii 8/12/18/28, black state layers, calm motion. */

:root {
  /* Palette (verbatim from the identity) */
  --ae-blue: #1994FF;
  --ae-blue-mono: #007CE6;
  --ae-red: #ED462F;
  --ae-yellow: #FFEC00;
  --ae-orange: #FFB000;
  --ae-black: #000000;
  --ae-grey: #AFAFAF;
  --canvas: #FDFDFD;
  --ink: #303030;

  /* Derived from ink / black state layers */
  --ink-2: rgba(48, 48, 48, .74);
  --ink-3: rgba(48, 48, 48, .56);
  --layer-4: rgba(0, 0, 0, .04);
  --layer-8: rgba(0, 0, 0, .08);
  --layer-12: rgba(0, 0, 0, .12);
  --hairline: rgba(0, 0, 0, .08);
  --surface-2: #F3F3F3;
  --blue-tonal: rgba(25, 148, 255, .14);
  --on-blue: #000000;

  /* Type */
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: "Lora", Georgia, "Times New Roman", serif;

  /* Spacing (8 px grid) */
  --s-1: 8px; --s-2: 16px; --s-3: 24px; --s-4: 32px; --s-6: 48px; --s-8: 64px; --s-12: 96px;
  --margin: 64px;
  --gutter: 24px;

  /* Radii */
  --r-chip: 8px; --r-btn: 12px; --r-panel: 18px; --r-card: 28px;

  /* Elevation */
  --elev-1: 0 1px 2px rgba(0, 0, 0, .06), 0 2px 8px rgba(0, 0, 0, .04);
  --elev-2: 0 2px 4px rgba(0, 0, 0, .06), 0 8px 24px rgba(0, 0, 0, .08);
  --elev-3: 0 4px 16px rgba(0, 0, 0, .06), 0 24px 64px rgba(0, 0, 0, .12);

  /* Motion */
  --ease-standard: cubic-bezier(.2, 0, 0, 1);
  --ease-emphasized: cubic-bezier(.05, .7, .1, 1);
  --ease-exit: cubic-bezier(.3, 0, .8, .15);
  --d-quick: 120ms; --d-standard: 240ms; --d-expressive: 400ms;
}

@media (max-width: 1100px) { :root { --margin: 32px; } }
@media (max-width: 600px)  { :root { --margin: 24px; --gutter: 16px; } }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 18px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
strong, b { font-weight: 600; }
::selection { background: var(--blue-tonal); }

:focus-visible { outline: 2px solid var(--ae-blue); outline-offset: 2px; }
.section--dark :focus-visible { outline-color: var(--ae-blue); }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: var(--s-2); top: -64px; z-index: 100;
  padding: 12px var(--s-2); border-radius: var(--r-btn);
  background: var(--ink); color: var(--canvas); text-decoration: none; font-weight: 500;
  transition: top var(--d-standard) var(--ease-standard);
}
.skip:focus { top: var(--s-2); }

.wrap { width: 100%; max-width: calc(1312px + 2 * var(--margin)); margin: 0 auto; padding: 0 var(--margin); }

.period { color: var(--ae-blue); }

/* ---------- Type ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-1);
  font: 500 14px/1.4 var(--sans); letter-spacing: .02em; color: var(--ink-2);
  margin-bottom: var(--s-3);
}
.eyebrow--dark { color: rgba(253, 253, 253, .72); }
.title { font: 600 40px/1.15 var(--sans); letter-spacing: -.015em; }
.headline { font: 600 26px/1.25 var(--sans); letter-spacing: -.005em; }
.lead { font-size: 18px; line-height: 1.5; color: var(--ink-2); max-width: 40em; }
.body-copy { color: var(--ink-2); }
.quote { font: 500 40px/1.15 var(--serif); letter-spacing: -.01em; }

@media (max-width: 600px) {
  .title { font-size: 32px; }
  .quote { font-size: 32px; }
  .headline { font-size: 22px; }
}

/* ---------- Pips & chips ---------- */
.pip { display: inline-block; width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--ae-blue); }
.pip--blue { background: var(--ae-blue); }
.pip--red { background: var(--ae-red); }
.pip--orange { background: var(--ae-orange); }
.pip--yellow { background: var(--ae-yellow); }

.status-chip {
  display: inline-flex; align-items: center; gap: var(--s-1);
  height: 32px; padding: 0 12px; border-radius: var(--r-chip);
  background: var(--layer-4); color: var(--ink);
  font: 500 14px/1 var(--sans); white-space: nowrap;
}
.status-chip--quiet { background: transparent; padding: 0; height: auto; color: var(--ink-2); }

/* ---------- Buttons ---------- */
.btn {
  --layer: transparent;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: var(--s-1);
  min-height: 48px; padding: 0 var(--s-3); border-radius: var(--r-btn);
  border: 1px solid transparent; cursor: pointer; text-decoration: none; white-space: nowrap;
  font: 600 16px/1 var(--sans);
  background-image: linear-gradient(var(--layer), var(--layer));
  transition: background-color var(--d-standard) var(--ease-standard), box-shadow var(--d-standard) var(--ease-standard), border-color var(--d-standard) var(--ease-standard);
}
.btn:hover { --layer: var(--layer-8); }
.btn:active { --layer: var(--layer-12); }
.btn[disabled] { cursor: not-allowed; opacity: .48; }
.btn--lg { min-height: 56px; padding: 0 var(--s-4); }
.btn--filled { background-color: var(--ae-blue); color: var(--on-blue); }
.btn--tonal { background-color: var(--blue-tonal); color: var(--ink); }
.btn--outlined { background-color: transparent; color: var(--ink); border-color: var(--ae-grey); }
.btn--outlined:hover { --layer: var(--layer-4); }
.section--dark .btn--outlined { color: var(--canvas); border-color: rgba(253, 253, 253, .4); }

/* ---------- Top bar ---------- */
.bar {
  position: sticky; top: 0; z-index: 50; height: 76px;
  background: rgba(253, 253, 253, .72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--d-standard) var(--ease-standard), background-color var(--d-standard) var(--ease-standard);
}
.bar.is-scrolled { border-bottom-color: var(--hairline); }
.bar__inner { height: 100%; display: flex; align-items: center; gap: var(--s-4); }
.wordmark {
  font: 500 26px/1 var(--serif); letter-spacing: -.01em; text-decoration: none; color: var(--ink);
  display: inline-flex; align-items: baseline; min-height: 44px; align-items: center;
}
.nav { flex: 1; display: flex; align-items: center; }
.nav__list { display: flex; gap: var(--s-1); margin-left: var(--s-2); }
.nav__list a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px; border-radius: var(--r-btn);
  font: 500 15px/1 var(--sans); color: var(--ink-2); text-decoration: none; white-space: nowrap;
  transition: background-color var(--d-quick) var(--ease-standard), color var(--d-quick) var(--ease-standard);
}
.nav__list a:hover { background: var(--layer-4); color: var(--ink); }
.nav__list a.is-active { color: var(--ink); }
.nav__list a.is-active::after { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--ae-blue); margin-left: 6px; }
.nav__cta { display: none; }
.bar__actions { display: flex; align-items: center; gap: var(--s-2); margin-left: auto; }
.menu-btn {
  display: none; width: 48px; height: 48px; border: 0; border-radius: var(--r-btn);
  background: transparent; cursor: pointer; align-items: center; justify-content: center;
}
.menu-btn:hover { background: var(--layer-4); }
.menu-btn svg path { stroke: var(--ink); stroke-width: 1.5; stroke-linecap: round; fill: none;
  transition: transform var(--d-standard) var(--ease-standard); transform-origin: 12px 12px; }
.menu-btn[aria-expanded="true"] .menu-btn__top { transform: translateY(4px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn__bottom { transform: translateY(-4px) rotate(-45deg); }

@media (max-width: 1240px) {
  .nav__list a { padding: 0 8px; font-size: 14px; }
  .bar .status-chip { display: none; }
}
@media (max-width: 1000px) {
  .menu-btn { display: inline-flex; }
  .bar__cta { display: none; }
  .nav {
    position: fixed; left: 0; right: 0; top: 76px; z-index: 49;
    flex-direction: column; align-items: stretch; gap: var(--s-2);
    padding: var(--s-2) var(--margin) var(--s-4);
    background: rgba(253, 253, 253, .96);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--hairline);
    box-shadow: var(--elev-2);
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity var(--d-quick) var(--ease-exit), transform var(--d-quick) var(--ease-exit), visibility 0s linear var(--d-quick);
  }
  .nav-open .nav {
    opacity: 1; visibility: visible; transform: none;
    transition: opacity var(--d-standard) var(--ease-standard), transform var(--d-standard) var(--ease-standard), visibility 0s;
  }
  .nav__list { flex-direction: column; margin: 0; gap: 0; }
  .nav__list a { width: 100%; min-height: 52px; font-size: 18px; padding: 0 var(--s-2); color: var(--ink); }
  .nav__cta { display: inline-flex; }
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: var(--s-12) 0 var(--s-4); overflow: hidden; }
.hero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); align-items: center; }
.hero__copy { grid-column: 1 / span 6; padding-right: var(--s-4); }
.hero__title {
  font: 500 64px/1.04 var(--serif); letter-spacing: -.02em; margin-bottom: var(--s-3);
  text-wrap: balance;
}
.hero .lead { max-width: 34em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: var(--s-4); }
.hero__proof { display: flex; flex-wrap: wrap; gap: var(--s-1) var(--s-3); margin-top: var(--s-4); }
.hero__proof li { display: inline-flex; align-items: center; gap: var(--s-1); font: 500 14px/1.4 var(--sans); color: var(--ink-2); }
.hero__art { grid-column: 7 / span 6; position: relative; }

/* Waves */
.waves { position: absolute; left: 0; right: 0; width: 100%; pointer-events: none; }
/* Hero waves sit in their own band below the hero content, never behind text. */
.waves--hero {
  position: relative; left: auto; right: auto;
  width: max(100%, 960px); height: auto; aspect-ratio: 1440 / 200;
  margin: var(--s-6) 0 0 min(0px, calc((100% - 960px) / 2));
}
.wave { fill: none; stroke-width: 3; stroke-linecap: round; }
.wave--red { stroke: var(--ae-red); }
.wave--yellow { stroke: var(--ae-yellow); }
.wave--orange { stroke: var(--ae-orange); }
.wave--blue { stroke: var(--ae-blue); }
.wave-dot--red { fill: var(--ae-red); }
.wave-dot--yellow { fill: var(--ae-yellow); }
.wave-dot--orange { fill: var(--ae-orange); }
.wave-dot--blue { fill: var(--ae-blue); }

/* Real app screenshot */
.shot {
  position: relative; margin: 0; border-radius: var(--r-card); overflow: hidden;
  background: var(--canvas); box-shadow: var(--elev-3); border: 1px solid rgba(0, 0, 0, .06);
}
.shot img { display: block; width: 100%; height: auto; }
.shot-caption {
  display: flex; align-items: center; gap: var(--s-1); margin-top: var(--s-2);
  font: 500 14px/1.4 var(--sans); color: var(--ink-2);
}
.hero__stage { position: relative; padding-bottom: var(--s-6); }
.shot--phone {
  position: absolute; left: calc(-1 * var(--s-6)); bottom: 0; width: 22%; min-width: 128px;
  border-radius: var(--r-panel); border: 1px solid rgba(0, 0, 0, .08);
}

/* Upcoming design: conflict figure and gallery */
.design-figure { margin-top: var(--s-8); }
.design-figure__caption, .gallery__item figcaption {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--s-1) 12px; margin-top: var(--s-2);
  font-size: 16px; color: var(--ink-2);
}
.design-figure__caption strong, .gallery__item figcaption strong { color: var(--ink); font-weight: 600; }
.plan-status {
  display: inline-flex; align-items: center; gap: var(--s-1); height: 28px; padding: 0 10px;
  border-radius: var(--r-chip); background: var(--layer-4); color: var(--ink);
  font: 500 13px/1 var(--sans); white-space: nowrap;
}
.plan-status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ae-grey); }
.plan-status--live::before { background: var(--ae-blue); }
.plan-status--planned::before { background: var(--ae-orange); }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6) var(--gutter); }
.gallery__item { margin: 0; }
.gallery__item--wide { grid-column: 1 / -1; }
.gallery__item .shot { box-shadow: var(--elev-2); }
@media (max-width: 1100px) {
  .shot--phone { left: calc(-1 * var(--s-2)); }
}
@media (max-width: 760px) {
  .gallery { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero__stage { padding-bottom: 0; }
  .shot--phone { display: none; }
  .design-figure { margin-top: var(--s-6); }
}

/* To-do box (scope specimen) */
.box {
  width: 16px; height: 16px; flex: none; border-radius: 4px; border: 1.5px solid var(--ae-grey); position: relative; background: var(--canvas);
}
.box.is-checked { background: var(--ae-blue); border-color: var(--ae-blue); }
.box.is-checked::after {
  content: ""; position: absolute; left: 4px; top: 1px; width: 5px; height: 9px;
  border: solid var(--on-blue); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg);
}

@media (max-width: 1100px) {
  .hero { padding-top: var(--s-8); }
  .hero__copy { grid-column: 1 / -1; padding-right: 0; max-width: 720px; }
  .hero__art { grid-column: 1 / -1; margin-top: var(--s-6); max-width: 880px; justify-self: center; width: 100%; }
}
@media (max-width: 600px) {
  .hero { padding: var(--s-6) 0 var(--s-8); }
  .hero__title { font-size: 44px; }
  .hero__actions .btn { width: 100%; }
  .hero__art { margin-top: var(--s-4); }
  .shot { border-radius: var(--r-panel); }
}

/* ---------- Save state pills ---------- */
.save-state {
  display: inline-flex; align-items: center; gap: var(--s-1);
  min-height: 28px; padding: 4px 10px; border-radius: var(--r-chip);
  background: var(--layer-4); color: var(--ink);
  font: 500 13px/1.25 var(--sans); white-space: nowrap;
  transition: background-color var(--d-standard) var(--ease-standard);
}
.save-state__dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--ae-blue); transition: background-color var(--d-standard) var(--ease-standard); }
.save-state[data-state="saved"] .save-state__dot { background: var(--ae-blue); }
.save-state[data-state="saving"] .save-state__dot { background: transparent; box-shadow: inset 0 0 0 2px var(--ae-blue); animation: pulse 1200ms var(--ease-standard) infinite; }
.save-state[data-state="pending"] .save-state__dot { background: var(--ae-orange); }
.save-state[data-state="error"] .save-state__dot { background: var(--ae-orange); box-shadow: 0 0 0 3px rgba(255, 176, 0, .28); }
.save-state[data-state="conflict"] .save-state__dot,
.save-state[data-state="refused"] .save-state__dot,
.save-state[data-state="storage-error"] .save-state__dot { background: var(--ae-red); box-shadow: 0 0 0 3px rgba(237, 70, 47, .2); }
.save-state[data-state="conflict"] { background: rgba(237, 70, 47, .08); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

/* ---------- Sections ---------- */
.section { padding: var(--s-12) 0; position: relative; }
.section-head { margin-bottom: var(--s-6); max-width: 760px; }
.section-head .title { margin-bottom: var(--s-2); }

/* States */
.states { background: var(--surface-2); }
.states__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--s-6); align-items: start; }
.states__intro { grid-column: 1 / span 5; position: sticky; top: 112px; }
.states__intro .quote { margin-bottom: var(--s-3); }
.states__list { grid-column: 7 / span 6; border-top: 1px solid var(--hairline); }
.state-row {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-3); align-items: center;
  padding: var(--s-2) 0; border-bottom: 1px solid var(--hairline);
}
.state-row dt { min-width: 0; }
.state-row .save-state { background: var(--canvas); box-shadow: var(--elev-1); white-space: normal; }
.state-row dd { color: var(--ink-2); font-size: 16px; }
@media (max-width: 960px) {
  .states__intro, .states__list { grid-column: 1 / -1; position: static; }
}
@media (max-width: 600px) {
  .state-row { grid-template-columns: 1fr; gap: var(--s-1); }
}

/* Demo */
.demo { border-radius: var(--r-card); background: var(--surface-2); padding: var(--s-3); }
.demo__controls { display: flex; flex-wrap: wrap; gap: var(--s-1); margin-bottom: var(--s-3); }
.chip-btn {
  --layer: transparent;
  display: inline-flex; align-items: center; gap: var(--s-1); min-height: 44px; padding: 0 var(--s-2);
  border-radius: var(--r-btn); border: 1px solid var(--hairline); background-color: var(--canvas);
  background-image: linear-gradient(var(--layer), var(--layer));
  font: 500 15px/1 var(--sans); cursor: pointer; box-shadow: var(--elev-1);
  transition: box-shadow var(--d-standard) var(--ease-standard);
}
.chip-btn:hover { --layer: var(--layer-4); box-shadow: var(--elev-2); }
.chip-btn:active { --layer: var(--layer-8); }
.chip-btn[disabled] { opacity: .48; cursor: not-allowed; box-shadow: none; }
.chip-btn--plain { background-color: transparent; border-color: transparent; box-shadow: none; color: var(--ink-2); }
.chip-btn--plain:hover { box-shadow: none; }

.demo__body { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--s-3); }
.demo__editor { border-radius: var(--r-panel); background: var(--canvas); box-shadow: var(--elev-1); overflow: hidden; display: flex; flex-direction: column; }
.demo__bar { display: flex; align-items: center; justify-content: space-between; gap: var(--s-2); min-height: 56px; padding: 0 var(--s-3); border-bottom: 1px solid var(--hairline); }
.demo__crumb { font: 500 14px/1 var(--sans); color: var(--ink-2); }
.demo__page { position: relative; padding: var(--s-4); flex: 1; min-height: 360px; }
.demo__h { font: 600 26px/1.25 var(--sans); letter-spacing: -.005em; margin-bottom: var(--s-2); }
.demo__block {
  width: 100%; min-height: 120px; resize: none; border: 0; padding: 12px var(--s-2); margin: 0 calc(-1 * var(--s-2));
  width: calc(100% + 2 * var(--s-2)); border-radius: var(--r-chip); background: transparent;
  font: 400 18px/1.5 var(--sans); color: var(--ink); overflow: hidden;
  transition: background-color var(--d-quick) var(--ease-standard);
}
.demo__block:hover { background: var(--layer-4); }
.demo__block:focus { outline: none; background: var(--layer-4); box-shadow: 0 0 0 2px var(--ae-blue); }
.demo__block[readonly] { color: var(--ink-3); }
.demo__hint { margin-top: var(--s-2); font-size: 14px; color: var(--ink-3); }

.demo__lock {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 12px;
  padding: var(--s-4); background: rgba(253, 253, 253, .9);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  animation: fade-in var(--d-standard) var(--ease-standard);
}
.demo__lock[hidden], .demo__conflict[hidden] { display: none; }
.demo__lock-title { font: 600 26px/1.2 var(--sans); }
.demo__lock p:not(.demo__lock-title) { color: var(--ink-2); max-width: 28em; }
.demo__lock .btn { margin-top: var(--s-1); }

.demo__conflict {
  position: absolute; inset: var(--s-2); padding: var(--s-3); border-radius: var(--r-panel);
  background: var(--canvas); box-shadow: var(--elev-3); border: 1px solid rgba(237, 70, 47, .24);
  overflow: auto; animation: rise var(--d-standard) var(--ease-standard);
}
.demo__conflict h3 { font: 600 22px/1.25 var(--sans); margin: 0 0 var(--s-1); }
.demo__conflict h3:focus { outline: none; }
.demo__conflict > p { color: var(--ink-2); font-size: 16px; }
.demo__columns { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: var(--s-2) 0; }
.demo__columns > div { padding: var(--s-2); border-radius: var(--r-chip); background: var(--layer-4); }
.demo__col-label { font: 500 13px/1 var(--sans); color: var(--ink-3); margin-bottom: var(--s-1); }
.demo__col-text { font-size: 15px; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }
.demo__choices { display: flex; flex-wrap: wrap; gap: var(--s-1); }

.demo__ledger { border-radius: var(--r-panel); background: var(--ae-black); color: var(--canvas); padding: var(--s-3); display: flex; flex-direction: column; min-height: 420px; }
.ledger__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--s-2); padding-bottom: var(--s-2); border-bottom: 1px solid rgba(253, 253, 253, .14); }
.ledger__title { font: 600 16px/1 var(--sans); }
.ledger__meta { font: 500 13px/1 var(--sans); color: rgba(253, 253, 253, .64); font-variant-numeric: tabular-nums; }
.ledger { flex: 1; overflow: auto; padding-top: var(--s-1); max-height: 420px; }
.ledger__item {
  display: grid; grid-template-columns: 64px 1fr; gap: 12px; padding: 10px 0;
  border-bottom: 1px solid rgba(253, 253, 253, .08); font-size: 14px; line-height: 1.4;
  animation: rise var(--d-standard) var(--ease-standard);
}
.ledger__item time { color: rgba(253, 253, 253, .5); font-variant-numeric: tabular-nums; font-size: 13px; padding-top: 1px; }
.ledger__item strong { display: block; font-weight: 500; position: relative; padding-left: 16px; }
.ledger__item strong::before { content: ""; position: absolute; left: 0; top: .5em; width: 8px; height: 8px; border-radius: 50%; background: rgba(253, 253, 253, .4); }
.ledger__item em { display: block; font-style: normal; color: rgba(253, 253, 253, .64); padding-left: 16px; font-variant-numeric: tabular-nums; }
.ledger__item[data-kind="ok"] strong::before, .ledger__item[data-kind="send"] strong::before { background: var(--ae-blue); }
.ledger__item[data-kind="draft"] strong::before, .ledger__item[data-kind="retry"] strong::before, .ledger__item[data-kind="error"] strong::before { background: var(--ae-orange); }
.ledger__item[data-kind="conflict"] strong::before { background: var(--ae-red); }
.ledger__item[data-kind="team"] strong::before { background: var(--ae-yellow); }
.ledger__item[data-kind="archive"] strong::before { background: var(--canvas); }

.demo__note { display: flex; align-items: center; gap: var(--s-1); margin-top: var(--s-2); font-size: 14px; color: var(--ink-2); }

@media (max-width: 960px) {
  .demo__body { grid-template-columns: 1fr; }
  .demo__ledger { min-height: 0; }
  .ledger { max-height: 320px; }
}
@media (max-width: 600px) {
  .demo { padding: var(--s-2); margin: 0 calc(-1 * var(--s-1)); }
  .demo__page { padding: var(--s-3); min-height: 420px; }
  .demo__columns { grid-template-columns: 1fr; }
  .demo__controls .chip-btn { flex: 1 1 calc(50% - 8px); justify-content: center; }
  .demo__choices .btn { flex: 1 1 100%; }
}

/* Pillars */
.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-6) var(--gutter); margin-top: var(--s-8); }
.pillar { border-top: 2px solid var(--ink); padding-top: var(--s-3); }
.pillar__num { font: 500 40px/1 var(--serif); color: var(--ae-blue); margin-bottom: var(--s-2); }
.pillar .headline { margin-bottom: 12px; }
.pillar p:not(.pillar__num) { color: var(--ink-2); }
@media (max-width: 960px) { .pillars { grid-template-columns: 1fr; gap: var(--s-4); } }

/* Scope */
.scope { background: var(--surface-2); }
.scope__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--s-6); align-items: start; }
.scope__head { grid-column: 1 / span 5; margin: 0; position: sticky; top: 112px; }
.facts { margin-top: var(--s-4); border-top: 1px solid var(--hairline); }
.facts li { padding: var(--s-2) 0; border-bottom: 1px solid var(--hairline); color: var(--ink-2); font-size: 16px; }
.facts strong { color: var(--ink); }
.specimen { grid-column: 7 / span 6; background: var(--canvas); border-radius: var(--r-card); box-shadow: var(--elev-1); padding: var(--s-4); }
.specimen__caption { font: 500 14px/1 var(--sans); color: var(--ink-3); margin-bottom: var(--s-2); }
.specimen__list li {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--s-2);
  padding: var(--s-2) 0; border-bottom: 1px solid var(--hairline);
}
.specimen__list code {
  flex: none; font: 500 13px/1 var(--sans); color: var(--ink-2);
  padding: 6px 8px; border-radius: var(--r-chip); background: var(--layer-4);
}
.sp { min-width: 0; }
.sp--h1 { font: 600 40px/1.1 var(--sans); letter-spacing: -.015em; }
.sp--h2 { font: 600 32px/1.15 var(--sans); letter-spacing: -.01em; }
.sp--h3 { font: 600 26px/1.2 var(--sans); }
.sp--h4 { font: 600 20px/1.3 var(--sans); }
.sp--p { font-size: 18px; }
.sp--ul { padding-left: 20px; position: relative; }
.sp--ul::before { content: ""; position: absolute; left: 4px; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--ink); }
.sp--ol { padding-left: 24px; position: relative; }
.sp--ol::before { content: "1."; position: absolute; left: 0; font-variant-numeric: tabular-nums; }
.sp--todo { display: inline-flex; align-items: center; gap: 12px; }
code.inline { font: 500 15px/1 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 2px 6px; border-radius: 6px; background: var(--layer-8); }
.refusal { margin-top: var(--s-3); padding: var(--s-2); border-radius: var(--r-panel); background: rgba(237, 70, 47, .06); border: 1px dashed rgba(237, 70, 47, .4); }
.refusal p { margin-top: 12px; font-size: 15px; color: var(--ink-2); }
.refusal .save-state { background: var(--canvas); }
@media (max-width: 960px) {
  .scope__head, .specimen { grid-column: 1 / -1; position: static; }
}
@media (max-width: 600px) {
  .specimen { padding: var(--s-3); }
  .specimen__list li { flex-direction: column; gap: var(--s-1); }
  .sp--h1 { font-size: 32px; } .sp--h2 { font-size: 26px; } .sp--h3 { font-size: 22px; }
}

/* Permissions (dark) */
.section--dark { background: var(--ae-black); color: var(--canvas); }
.section--dark .lead { color: rgba(253, 253, 253, .72); }
.path { position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--gutter); margin: var(--s-2) 0 var(--s-8); }
.path::before { content: ""; position: absolute; left: 6px; right: 6px; top: 6px; height: 2px; background: linear-gradient(90deg, var(--ae-red), var(--ae-orange) 40%, var(--ae-yellow) 60%, var(--ae-blue)); opacity: .9; }
.path__step { position: relative; padding-top: var(--s-4); }
.path__dot { position: absolute; left: 0; top: 0; width: 14px; height: 14px; border-radius: 50%; background: var(--ae-black); box-shadow: inset 0 0 0 2px var(--canvas); }
.path__step--end .path__dot { background: var(--ae-blue); box-shadow: none; }
.path__step strong { display: block; font: 600 18px/1.3 var(--sans); margin-bottom: 4px; }
.path__step span:not(.path__dot) { display: block; font-size: 15px; color: rgba(253, 253, 253, .64); }
.facts-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 var(--gutter); }
.fact { padding: var(--s-3) 0 var(--s-4); border-top: 1px solid rgba(253, 253, 253, .16); }
.fact h3 { font: 600 20px/1.3 var(--sans); margin-bottom: var(--s-1); }
.fact p { color: rgba(253, 253, 253, .72); font-size: 16px; }
@media (max-width: 1100px) {
  .path { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: var(--s-4); }
  .path::before { display: none; }
  .path__dot { box-shadow: inset 0 0 0 2px var(--ae-blue); }
}
@media (max-width: 960px) { .facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) {
  .path { grid-template-columns: 1fr; gap: 0; margin-bottom: var(--s-6); }
  .path__step { padding: 0 0 var(--s-3) var(--s-4); }
  .path__step:not(:last-child)::after { content: ""; position: absolute; left: 6px; top: 18px; bottom: 2px; width: 2px; background: rgba(253, 253, 253, .2); }
  .facts-grid { grid-template-columns: 1fr; }
}

/* AlphaCloud */
.alphacloud__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--s-6); align-items: center; }
.alphacloud__copy { grid-column: 1 / span 6; }
.alphacloud__copy .title { margin-bottom: var(--s-2); }
.points { margin-top: var(--s-4); display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3) var(--gutter); }
.points dt { font: 600 18px/1.3 var(--sans); margin-bottom: 4px; display: flex; align-items: center; gap: var(--s-1); }
.points dt::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ae-blue); }
.points dd { color: var(--ink-2); font-size: 16px; }
.stack { grid-column: 8 / span 5; display: grid; gap: 12px; perspective: 1200px; }
.slab {
  display: flex; flex-direction: column; gap: 12px; padding: var(--s-3);
  border-radius: var(--r-panel); background: var(--canvas); border: 1px solid var(--hairline); box-shadow: var(--elev-1);
}
.slab__name { font: 600 20px/1.2 var(--sans); }
.slab--top { box-shadow: var(--elev-3); border-color: rgba(25, 148, 255, .4); margin: 0 var(--s-4) 0 0; position: relative; }
.slab--top::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; box-shadow: inset 4px 0 0 var(--ae-blue); pointer-events: none; }
.slab--top .slab__name { font: 500 26px/1 var(--serif); }
.slab--mid { margin: 0 var(--s-2); background: var(--surface-2); }
.slab--base { margin: 0 0 0 var(--s-4); background: var(--ink); color: var(--canvas); border-color: transparent; }
.slab__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.slab__tags span { font: 500 13px/1 var(--sans); padding: 6px 10px; border-radius: var(--r-chip); background: var(--layer-4); }
.slab--top .slab__tags span { background: var(--blue-tonal); }
.slab--base .slab__tags span { background: rgba(253, 253, 253, .12); }
@media (max-width: 960px) {
  .alphacloud__copy, .stack { grid-column: 1 / -1; }
  .stack { max-width: 560px; }
}
@media (max-width: 600px) {
  .points { grid-template-columns: 1fr; }
  .slab--top, .slab--mid, .slab--base { margin: 0; }
}

/* Fit */
.next { background: var(--surface-2); }
.fit__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gutter); }
.fit__col { padding: var(--s-4); border-radius: var(--r-card); background: var(--canvas); box-shadow: var(--elev-1); }
.fit__col--muted { background: transparent; box-shadow: none; border: 1px solid var(--hairline); }
.fit__title { font: 600 20px/1.3 var(--sans); margin-bottom: var(--s-2); }
.ticks li, .dashes li { position: relative; padding: 12px 0 12px 32px; border-top: 1px solid var(--hairline); }
.ticks li::before {
  content: ""; position: absolute; left: 4px; top: 19px; width: 6px; height: 11px;
  border: solid var(--ink); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg);
}
.dashes li { color: var(--ink-2); }
.dashes li::before { content: ""; position: absolute; left: 2px; top: 25px; width: 12px; height: 1.5px; background: var(--ink-3); }
@media (max-width: 960px) { .fit__grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .fit__col { padding: var(--s-3); } }

/* FAQ */
.faq__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); }
.faq__grid .section-head { grid-column: 1 / span 4; }
.faq__list { grid-column: 5 / span 8; border-top: 1px solid var(--hairline); }
.faq details { border-bottom: 1px solid var(--hairline); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: var(--s-2);
  min-height: 64px; padding: var(--s-2) 0; font: 600 20px/1.3 var(--sans);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 24px; height: 24px; border-radius: 50%;
  background:
    linear-gradient(var(--ink), var(--ink)) center / 12px 1.5px no-repeat,
    linear-gradient(var(--ink), var(--ink)) center / 1.5px 12px no-repeat;
  transition: transform var(--d-standard) var(--ease-standard);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--ink); }
.faq details p { padding: 0 var(--s-6) var(--s-3) 0; color: var(--ink-2); }
.faq details a { text-decoration-color: var(--ae-blue); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
@media (max-width: 960px) {
  .faq__grid .section-head, .faq__list { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .faq summary { font-size: 18px; }
  .faq details p { padding-right: 0; }
}

/* Early access */
.access__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: var(--s-6); align-items: start; }
.access__copy { grid-column: 1 / span 6; }
.access__title { font: 500 64px/1.04 var(--serif); letter-spacing: -.02em; margin-bottom: var(--s-3); text-wrap: balance; }
.steps { margin-top: var(--s-4); display: grid; gap: 12px; }
.steps li { display: flex; align-items: center; gap: var(--s-2); color: var(--ink-2); }
.steps span {
  flex: none; width: 32px; height: 32px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  background: var(--blue-tonal); color: var(--ink); font: 600 14px/1 var(--sans);
}
.composer { grid-column: 8 / span 5; padding: var(--s-4); border-radius: var(--r-card); background: var(--canvas); box-shadow: var(--elev-2); border: 1px solid rgba(0, 0, 0, .04); }
.composer__title { font: 600 20px/1.3 var(--sans); margin-bottom: var(--s-3); }
.field { display: grid; gap: var(--s-1); margin-bottom: var(--s-2); }
.field label { font: 500 14px/1.3 var(--sans); }
.field input, .field select, .field textarea, .composer__output {
  width: 100%; min-height: 48px; padding: 12px var(--s-2); border-radius: var(--r-chip);
  border: 1px solid transparent; background: var(--layer-4); font-size: 16px;
  transition: background-color var(--d-quick) var(--ease-standard), box-shadow var(--d-quick) var(--ease-standard);
}
.field textarea { resize: vertical; min-height: 112px; }
.field select { appearance: none; -webkit-appearance: none; padding-right: var(--s-6);
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 22px) 52%, calc(100% - 17px) 52%; background-size: 5px 5px; background-repeat: no-repeat; }
.field input:hover, .field select:hover, .field textarea:hover { background-color: var(--layer-8); }
.field input:focus, .field select:focus, .field textarea:focus, .composer__output:focus { outline: none; background-color: var(--canvas); box-shadow: 0 0 0 2px var(--ae-blue); }
.field [aria-invalid="true"] { box-shadow: 0 0 0 2px var(--ae-red); }
.composer__actions { display: flex; flex-wrap: wrap; gap: var(--s-1); margin-top: var(--s-3); }
.composer__actions [hidden] { display: none; }
.composer__status { margin-top: var(--s-2); font-size: 14px; color: var(--ink-2); min-height: 1.5em; }
.composer__output { margin-top: var(--s-2); font-size: 14px; line-height: 1.45; resize: none; }
.composer__output[hidden] { display: none; }
@media (max-width: 960px) {
  .access__copy, .composer { grid-column: 1 / -1; }
  .composer { max-width: 640px; }
}
@media (max-width: 600px) {
  .access__title { font-size: 44px; }
  .composer { padding: var(--s-3); }
  .composer__actions .btn { flex: 1 1 100%; }
}

/* Footer */
.footer { position: relative; padding: 200px 0 var(--s-6); overflow: hidden; border-top: 1px solid var(--hairline); }
.waves--footer { top: 0; height: 240px; }
.footer__inner { position: relative; }
.footer__sign { font: 500 64px/1 var(--serif); letter-spacing: -.02em; margin-bottom: var(--s-6); }
.footer__cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--s-4) var(--gutter); padding-bottom: var(--s-6); border-bottom: 1px solid var(--hairline); }
.footer__brand p { color: var(--ink-2); margin-top: 12px; font-size: 16px; }
.footer__brand .wordmark { min-height: 0; }
.footer__label { font: 500 14px/1 var(--sans); color: var(--ink-3); margin-bottom: var(--s-2); }
.footer nav li a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; color: var(--ink); font-size: 16px; }
.footer nav li a:hover { text-decoration: underline; text-decoration-color: var(--ae-blue); text-underline-offset: 4px; text-decoration-thickness: 1.5px; }
.footer__base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-1) var(--s-3); padding-top: var(--s-3); font-size: 14px; color: var(--ink-3); }
@media (max-width: 760px) {
  .footer { padding-top: 160px; }
  .waves--footer { height: 200px; }
  .footer__sign { font-size: 48px; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

/* ---------- Motion ---------- */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.js [data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity var(--d-standard) var(--ease-standard), transform var(--d-standard) var(--ease-standard); }
.js [data-reveal].is-in { opacity: 1; transform: none; }

.js .hero__copy > * { opacity: 0; transform: translateY(16px); }
.js .hero__art { opacity: 0; transform: translateY(24px); }
.js .waves--hero { opacity: 0; transform: translateX(-24px); }
.js.is-loaded .hero__copy > *, .js.is-loaded .hero__art, .js.is-loaded .waves--hero {
  opacity: 1; transform: none;
  transition: opacity var(--d-expressive) var(--ease-emphasized), transform var(--d-expressive) var(--ease-emphasized);
}
.js.is-loaded .hero__copy > :nth-child(2) { transition-delay: 60ms; }
.js.is-loaded .hero__copy > :nth-child(3) { transition-delay: 120ms; }
.js.is-loaded .hero__copy > :nth-child(4) { transition-delay: 180ms; }
.js.is-loaded .hero__copy > :nth-child(5) { transition-delay: 240ms; }
.js.is-loaded .hero__art { transition-delay: 160ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 60ms !important; animation-iteration-count: 1 !important; }
  .js [data-reveal], .js .hero__copy > *, .js .hero__art, .js .waves--hero { transform: none !important; }
  .js [data-reveal] { transition: opacity var(--d-quick) linear; }
  .js.is-loaded .hero__copy > *, .js.is-loaded .hero__art, .js.is-loaded .waves--hero { transition: opacity 200ms linear; transition-delay: 0ms !important; }
  .btn, .chip-btn, .save-state, .nav, .menu-btn svg path { transition-duration: 60ms !important; }
  .save-state[data-state="saving"] .save-state__dot { animation: none; }
}