/* Classrove product site.
 *
 * One system, no layers of overrides:
 * - Surfaces are solid. Glass is used only where something moves behind it:
 *   the sticky nav, the overlapping hero cards, the tooltip, and the closing
 *   card once the gold bloom rises behind it.
 * - One typeface (Plus Jakarta Sans), sentence-case labels, tabular figures.
 * - Motion is transform/opacity only; reduced motion gets the finished page.
 */

:root {
  --paper: #f6f5f1;
  --surface: #ffffff;
  --ink: #14213a;
  --ink-2: #4a5670;
  --ink-3: #7a8397;
  --line: rgb(20 33 58 / 9%);
  --navy: #0f1d33;
  --navy-2: #172842;
  --navy-line: rgb(255 255 255 / 10%);
  --blue: #2f6fd1;
  --gold: #d4af5a;
  --gold-2: #f2d48a;
  --gold-ink: #9a7627;
  --green: #2e7d4f;
  --max: 1160px;
  --pad: clamp(20px, 5vw, 56px);
  --radius: 22px;
  --shadow: 0 1px 2px rgb(20 33 58 / 5%), 0 18px 40px -22px rgb(20 33 58 / 28%);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 "Plus Jakarta Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0;
  color: inherit;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.9rem, 3.3vw, 2.9rem);
  font-weight: 750;
  line-height: 1.08;
  letter-spacing: -0.032em;
}

p {
  margin: 0;
  text-wrap: pretty;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 6px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
}

.skip:focus {
  top: 16px;
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--gold-ink);
  font-size: 0.9rem;
  font-weight: 650;
  letter-spacing: 0.01em;
}

/* --- buttons ------------------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 0.97rem;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), background 0.3s ease, box-shadow 0.3s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -12px rgb(20 33 58 / 55%);
}

.btn-quiet {
  border-color: var(--line);
  background: transparent;
  color: var(--ink);
}

.btn-quiet:hover {
  background: var(--surface);
  box-shadow: none;
}

.btn-small {
  min-height: 40px;
  padding: 0 18px;
  font-size: 0.9rem;
}

.btn-light {
  background: #fff;
  color: var(--ink);
}

/* --- reveal ------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s var(--ease) var(--d, 0s), transform 0.9s var(--ease) var(--d, 0s);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* --- glass (nav, hero cards, tooltip, the closing card) ------------------------------- */

.glass {
  background: rgb(255 255 255 / 58%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border: 1px solid rgb(255 255 255 / 75%);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 90%),
    0 0 0 1px rgb(20 33 58 / 5%),
    0 22px 44px -22px rgb(20 33 58 / 32%);
}

/* --- nav ---------------------------------------------------------------------------- */

.nav {
  position: fixed;
  top: calc(12px + env(safe-area-inset-top, 0px));
  left: 50%;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  width: min(var(--max), calc(100% - 24px));
  height: 60px;
  padding: 0 10px 0 18px;
  border-radius: 999px;
  transform: translateX(-50%);
  background: rgb(246 245 241 / 66%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgb(255 255 255 / 70%);
  box-shadow: 0 0 0 1px rgb(20 33 58 / 5%), 0 12px 30px -20px rgb(20 33 58 / 40%);
  transition: transform 0.5s var(--ease), background 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

.nav.is-hidden {
  transform: translate(-50%, calc(-100% - 24px));
}

.nav.on-dark {
  background: rgb(15 29 51 / 58%);
  border-color: rgb(255 255 255 / 12%);
  color: #fff;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.08rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 28px;
  height: 28px;
}

.brand-mark circle:first-child {
  fill: var(--ink);
}

.brand-mark path {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2.4;
  stroke-linecap: round;
}

.brand-mark circle + path + circle {
  fill: var(--gold-2);
}

.nav.on-dark .brand-mark circle:first-child {
  fill: #fff;
}

.nav-links {
  display: flex;
  gap: 4px;
  margin: 0 auto;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: inherit;
  font-size: 0.92rem;
  font-weight: 550;
  text-decoration: none;
  opacity: 0.72;
  transition: opacity 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.is-here {
  opacity: 1;
}

.nav-links a.is-here {
  background: rgb(20 33 58 / 6%);
}

.nav.on-dark .nav-links a.is-here {
  background: rgb(255 255 255 / 12%);
}

.nav-links .nav-demo,
.menu-btn {
  display: none;
}

.nav.on-dark .nav-cta {
  background: #fff;
  color: var(--ink);
}

.icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
}

/* --- the gold line -------------------------------------------------------------------- */

.rove {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  pointer-events: none;
  overflow: visible;
}

.rove path {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.rove-path {
  stroke: var(--gold);
  stroke-width: 2;
}

.rove-glow {
  stroke: var(--gold-2);
  stroke-width: 6;
  opacity: 0.35;
  filter: url(#roveGlow);
}

.rove-head {
  fill: var(--gold-2);
  filter: drop-shadow(0 0 6px rgb(242 212 138 / 90%));
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* Content sits above the line, so it passes behind cards and never across text. */
section > * {
  position: relative;
  z-index: 2;
}

/* --- hero ----------------------------------------------------------------------------- */

.hero {
  display: grid;
  grid-template-columns: 1.12fr 0.95fr;
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  max-width: var(--max);
  min-height: 100svh;
  margin: 0 auto;
  padding: clamp(96px, 13vh, 128px) var(--pad) clamp(32px, 6vh, 64px);
}

.hero-title {
  font-size: min(4.4rem, 3.9vw, 8.8vh);
  white-space: nowrap;
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.045em;
}

.hero-title .line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.06em;
}

.hero-title .line > span {
  display: block;
  transform: translateY(105%);
  transition: transform 1.1s var(--ease);
}

.hero-title .line + .line > span {
  transition-delay: 0.08s;
}

.is-ready .hero-title .line > span {
  transform: none;
}

.lead {
  max-width: 34rem;
  margin-top: clamp(16px, 2.6vh, 24px);
  color: var(--ink-2);
  font-size: clamp(1.02rem, 1.25vw, 1.18rem);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3.6vh, 34px);
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: clamp(22px, 3.6vh, 34px) 0 0;
  padding: 0;
  color: var(--ink-3);
  font-size: 0.86rem;
  list-style: none;
}

.facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.facts li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}

.hero-stage {
  position: relative;
  height: min(540px, 66vh);
}

.float {
  position: absolute;
  will-change: transform;
}

.f1 {
  top: 2%;
  left: 2%;
  width: 64%;
}

.f3 {
  top: 24%;
  right: 0;
  width: 46%;
}

.f2 {
  top: 53%;
  left: 0;
  width: 78%;
}

.f4 {
  right: 3%;
  bottom: 0;
  width: 54%;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card.glass {
  border-color: rgb(255 255 255 / 75%);
  background: rgb(255 255 255 / 58%);
}

.card-label {
  margin-bottom: 12px;
  color: var(--ink-3);
  font-size: 0.8rem;
  font-weight: 600;
}

.mini-heat,
.mini-bars {
  padding: 18px;
}

.heat-mini {
  display: grid;
  grid-template-columns: repeat(14, 1fr);
  gap: 4px;
}

.heat-mini i {
  aspect-ratio: 1;
  border-radius: 3px;
}

.bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 104px;
}

.bars i {
  flex: 1;
  height: var(--h);
  border-radius: 7px 7px 3px 3px;
  background: linear-gradient(#6da7ec, #2f6fd1);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 1s var(--ease);
}

.bars i:nth-child(2) { transition-delay: 0.06s; }
.bars i:nth-child(3) { transition-delay: 0.12s; }
.bars i:nth-child(4) { transition-delay: 0.18s; }
.bars i:nth-child(5) { transition-delay: 0.24s; }

.bars i.gold {
  background: linear-gradient(var(--gold-2), var(--gold));
}

.is-ready .bars i {
  transform: none;
}

.mini-ask {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px 12px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
}

.ask-icon {
  display: grid;
  flex: none;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}

.mini-msg {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
}

.bubble {
  align-self: flex-start;
  max-width: 82%;
  padding: 9px 13px;
  border-radius: 16px 16px 16px 5px;
  background: #e9ecf2;
  color: var(--ink);
  font-size: 0.88rem;
  line-height: 1.4;
}

.bubble.me {
  align-self: flex-end;
  border-radius: 16px 16px 5px;
  background: var(--ink);
  color: #fff;
}

/* --- noise: paper collapses into one record ------------------------------------------- */

.noise {
  position: relative;
  height: 260vh;
  background: var(--navy);
  color: #fff;
}

.noise-pin {
  position: sticky;
  top: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100svh;
  overflow: hidden;
  padding: clamp(96px, 16vh, 150px) var(--pad) 0;
}

.noise-copy {
  display: grid;
  justify-items: center;
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.noise-copy h2 {
  display: grid;
}

.noise-copy h2 > span {
  grid-area: 1 / 1;
}

.noise-a {
  opacity: calc(1 - var(--p2, 0));
  transform: translateY(calc(var(--p2, 0) * -14px));
}

.noise-b {
  opacity: var(--p2, 0);
  transform: translateY(calc((1 - var(--p2, 0)) * 14px));
}

.noise-sub {
  max-width: 36rem;
  margin-top: 18px;
  color: rgb(255 255 255 / 66%);
  opacity: var(--p2, 0);
}

.noise-field {
  position: relative;
  --k: 1;
}

.scrap {
  position: absolute;
  top: 40%;
  left: 50%;
  width: 196px;
  padding: 12px 14px;
  border-radius: 8px;
  color: #33302a;
  font-size: 0.9rem;
  line-height: 1.35;
  box-shadow: 0 16px 30px -16px rgb(0 0 0 / 60%);
  opacity: calc(1 - var(--p2, 0));
  transform:
    translate(-50%, -50%)
    translate(calc(var(--x) * 1vw * var(--k) * (1 - var(--e, 0))), calc(var(--y) * 1vh * (1 - var(--e, 0))))
    rotate(calc(var(--r) * (1 - var(--e, 0))))
    scale(calc(var(--k) * (1 - 0.3 * var(--e, 0))));
}

.scrap.paper {
  display: grid;
  gap: 2px;
  background: #f4efe2;
  font-family: "Bradley Hand", "Segoe Print", "Comic Sans MS", cursive;
}

.scrap.sticky {
  width: 170px;
  background: #fde58a;
  font-family: "Bradley Hand", "Segoe Print", "Comic Sans MS", cursive;
}

.scrap.sticky.alt {
  background: #fbc9a0;
}

.scrap.ping {
  width: 210px;
  border-radius: 14px;
  background: #fff;
  font-weight: 600;
}

.scrap.sheet {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 0;
  overflow: hidden;
  background: #fff;
  font: 600 0.78rem/1 ui-monospace, Menlo, monospace;
}

.scrap.sheet span {
  padding: 9px 10px;
  border-right: 1px solid #dde2ea;
  border-bottom: 1px solid #dde2ea;
}

.record {
  position: absolute;
  top: 45%;
  left: 50%;
  width: min(380px, calc(100vw - 40px));
  padding: 22px;
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  background: var(--navy-2);
  box-shadow: 0 30px 60px -30px rgb(0 0 0 / 70%);
  opacity: var(--p2, 0);
  transform: translate(-50%, -50%) scale(calc(0.9 + 0.1 * var(--p2, 0)));
}

.record header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--navy-line);
}

.record header b,
.record header small {
  display: block;
}

.record header small {
  color: rgb(255 255 255 / 55%);
  font-size: 0.82rem;
}

.avatar {
  display: grid;
  flex: none;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 750;
}

.record dl {
  display: grid;
  margin: 0;
}

.record dl > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--navy-line);
  font-size: 0.93rem;
}

.record dl > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.record dt {
  color: rgb(255 255 255 / 62%);
}

.record dd {
  margin: 0;
  font-weight: 650;
  text-align: right;
}

.record dd em {
  margin-left: 6px;
  color: rgb(255 255 255 / 45%);
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 500;
}

.record dd.ok {
  color: #7fd3a1;
}

/* --- split sections ------------------------------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  align-items: center;
  gap: clamp(40px, 6vw, 96px);
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(80px, 13vh, 140px) var(--pad);
}

.split-flip {
  grid-template-columns: 1.05fr 1fr;
}

.split-flip .split-visual {
  order: -1;
}

.split-copy > p:not(.eyebrow) {
  margin-top: 18px;
  color: var(--ink-2);
  font-size: 1.06rem;
}

.points {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.points li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.97rem;
  font-weight: 500;
}

.points li:last-child {
  border-bottom: 1px solid var(--line);
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.card-head b {
  font-size: 1rem;
}

.card-head span {
  color: var(--ink-3);
  font-size: 0.82rem;
}

.readout {
  min-height: 3.2em;
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.45;
}

.readout b {
  color: var(--ink);
}

/* Heatmap */
.heat-card,
.flow-card,
.leave-card {
  padding: clamp(18px, 2.4vw, 26px);
}

.heat {
  display: grid;
  gap: 4px;
  outline-offset: 6px;
}

.heat i {
  aspect-ratio: 1;
  border-radius: 4px;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.5s ease var(--dl), transform 0.6s var(--ease) var(--dl), box-shadow 0.15s ease;
}

.in .heat i {
  opacity: 1;
  transform: none;
}

.heat i.off {
  box-shadow: inset 0 0 0 1px var(--line);
}

.heat i.is-pick {
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--ink);
}

.heat-legend {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  color: var(--ink-3);
  font-size: 0.78rem;
}

.heat-legend i {
  width: 120px;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, #cde2fb, #184f95);
}

/* Grade flow */
.flow {
  width: 100%;
  height: auto;
  overflow: visible;
}

.flow .ribbon {
  fill: none;
  opacity: 0.5;
  stroke-dasharray: var(--len);
  stroke-dashoffset: var(--len);
  transition: stroke-dashoffset 1.4s var(--ease) var(--dl), opacity 0.2s ease;
}

.in .flow .ribbon {
  stroke-dashoffset: 0;
}

.flow.is-focus .ribbon {
  opacity: 0.1;
}

.flow.is-focus .ribbon.is-lit {
  opacity: 0.85;
}

.flow text {
  fill: var(--ink-3);
  font-size: 12px;
  font-weight: 650;
}

.flow rect {
  cursor: pointer;
}

/* Cover list */
.pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgb(46 125 79 / 10%);
  color: var(--green) !important;
  font-size: 0.78rem !important;
  font-weight: 650;
}

.cover-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cover-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--paper);
  font-size: 0.92rem;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity 0.6s ease, transform 0.6s var(--ease);
  transition-delay: calc(0.2s + var(--i) * 0.12s);
}

.in .cover-list li {
  opacity: 1;
  transform: none;
}

.cover-list b {
  margin-right: 8px;
}

.cover-list em {
  color: var(--green);
  font-style: normal;
  font-weight: 650;
}

.cover-list em::before {
  content: "✓ ";
}

/* --- Ask ------------------------------------------------------------------------------ */

.ask {
  padding: clamp(44px, 7vh, 96px) var(--pad);
  background: var(--navy);
  color: #fff;
}

.ask-head {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.ask-head .eyebrow {
  color: var(--gold);
}

.ask-head h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
}

.ask-head p:last-child {
  max-width: 36rem;
  margin: 14px auto 0;
  color: rgb(255 255 255 / 66%);
  font-size: 1.02rem;
}

.ask-body {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  max-width: var(--max);
  margin: clamp(22px, 3.6vh, 48px) auto 0;
}

.ask-card {
  padding: 20px;
  border-color: var(--navy-line);
  background: var(--navy-2);
  box-shadow: 0 30px 60px -34px rgb(0 0 0 / 80%);
  color: #fff;
}

.ask-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 10px 14px 10px 10px;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 14px;
  background: rgb(255 255 255 / 5%);
  font-size: 1.02rem;
  font-weight: 550;
}

.ask-bar .ask-icon {
  background: var(--gold);
  color: var(--ink);
}

.caret {
  width: 2px;
  height: 1.2em;
  margin-left: -8px;
  background: var(--gold);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.ask-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 28px;
  margin: 10px 0;
}

.ask-chips span {
  padding: 3px 10px;
  border: 1px solid rgb(212 175 90 / 32%);
  border-radius: 999px;
  background: rgb(212 175 90 / 12%);
  color: var(--gold-2);
  font-size: 0.78rem;
  font-weight: 600;
  animation: chip 0.5s var(--ease) both;
}

@keyframes chip {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

.ask-bars {
  display: grid;
  align-content: start;
  gap: 6px;
  min-height: 146px;
}

.ask-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr 3.4rem;
  align-items: center;
  gap: 12px;
  color: rgb(255 255 255 / 80%);
  font-size: 0.88rem;
}

.ask-row span:last-child {
  text-align: right;
  font-weight: 650;
}

.ask-row b {
  height: 8px;
  border-radius: 4px;
  background: #4a86dc;
  transform: scaleX(var(--w));
  transform-origin: left;
  transition: transform 0.7s var(--ease);
}

.ask-row.enter b {
  transform: scaleX(0);
}

.ask-row.top {
  color: #fff;
}

.ask-row.top b {
  background: var(--gold);
}

.ask-card.is-stale .ask-chips,
.ask-card.is-stale .ask-bars,
.ask-card.is-stale .ask-caption {
  opacity: 0.28;
  transition: opacity 0.3s ease;
}

.ask-caption {
  min-height: 1.4em;
  margin-top: 12px;
  color: rgb(255 255 255 / 55%);
  font-size: 0.82rem;
}

.ask-try {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--navy-line);
}

.ask-try button {
  padding: 6px 12px;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 999px;
  background: transparent;
  color: rgb(255 255 255 / 72%);
  font-size: 0.8rem;
  transition: background 0.2s ease, color 0.2s ease;
}

.ask-try button:hover {
  color: #fff;
}

.ask-try button[aria-pressed="true"] {
  border-color: #fff;
  background: #fff;
  color: var(--ink);
}

.engine-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 12px;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 14px;
  color: #fff;
  text-decoration: none;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.engine-badge img {
  width: 20px;
  height: 20px;
  filter: invert(1) brightness(1.5);
}

.engine-badge small {
  display: block;
  color: rgb(255 255 255 / 55%);
  font-size: 0.72rem;
  line-height: 1.2;
}

.engine-badge b {
  display: block;
  font-size: 0.95rem;
  font-weight: 650;
  line-height: 1.3;
}

.engine-arrow {
  margin-left: 4px;
  color: var(--gold);
  transition: transform 0.25s ease;
}

.engine-badge:hover {
  border-color: rgb(212 175 90 / 60%);
  background: rgb(255 255 255 / 4%);
}

.engine-badge:hover .engine-arrow {
  transform: translate(2px, -2px);
}

.engine-lead {
  margin-top: 18px;
  color: rgb(255 255 255 / 70%);
  font-size: 0.95rem;
}

.engine-points {
  display: grid;
  gap: 14px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.engine-points li {
  padding-left: 14px;
  border-left: 2px solid var(--gold);
}

.engine-points b {
  display: block;
  font-size: 0.95rem;
  font-weight: 650;
}

.engine-points span {
  display: block;
  color: rgb(255 255 255 / 58%);
  font-size: 0.87rem;
  line-height: 1.5;
}

/* --- Families ------------------------------------------------------------------------- */

.families {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(80px, 13vh, 140px) var(--pad);
}

.families-head,
.index-head {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.families-head p:last-child,
.index-head p:last-child {
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 1.06rem;
}

.families-body {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  margin-top: clamp(40px, 6vh, 64px);
}

.family-facts {
  display: grid;
  gap: 36px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.family-facts:first-child {
  text-align: right;
}

.family-facts b {
  display: block;
  margin-bottom: 4px;
  font-size: 1.05rem;
}

.family-facts span {
  color: var(--ink-2);
  font-size: 0.95rem;
}

.phone-wrap {
  display: grid;
  justify-items: center;
  gap: 18px;
}

.phone {
  position: relative;
  width: 270px;
  height: 500px;
  border: 10px solid #101b2d;
  border-radius: 46px;
  background: var(--paper);
  box-shadow: 0 40px 70px -40px rgb(20 33 58 / 60%);
  overflow: hidden;
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  width: 88px;
  height: 24px;
  border-radius: 999px;
  background: #101b2d;
  transform: translateX(-50%);
}

.phone-screen {
  position: absolute;
  inset: 0;
}

.phone-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 54px 16px 16px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.6s var(--ease);
  pointer-events: none;
}

.phone-state.is-on {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.phone-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
  font-weight: 700;
}

.phone-sub {
  color: var(--ink-3);
  font-size: 0.82rem;
}

.compose {
  margin-top: auto;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-3);
  font-size: 0.84rem;
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 6px;
}

.slots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.slots span {
  padding: 9px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  font-size: 0.84rem;
  font-weight: 600;
  text-align: center;
}

.slots .pick {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.booked {
  color: var(--green);
  font-size: 0.86rem;
  font-weight: 650;
}

.idcard {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.id-top {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 16px;
  background: var(--navy);
  color: #fff;
  text-align: center;
}

.id-top b {
  font-size: 0.72rem;
  opacity: 0.7;
}

.id-top strong {
  font-size: 1rem;
}

.id-top small {
  color: rgb(255 255 255 / 70%);
  font-size: 0.76rem;
}

.id-qr {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 14px;
  color: var(--ink-3);
  font-size: 0.74rem;
}

.id-qr .qr {
  width: 108px;
  height: 108px;
}

.phone-tabs {
  display: inline-flex;
  gap: 2px;
  padding: 4px;
  border-radius: 999px;
  background: rgb(20 33 58 / 6%);
}

.phone-tabs button {
  padding: 7px 14px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font-size: 0.84rem;
  font-weight: 600;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.phone-tabs button[aria-selected="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 1px 3px rgb(20 33 58 / 14%);
}

/* --- Platform index ------------------------------------------------------------------- */

.index {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(80px, 13vh, 140px) var(--pad);
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 28px;
  margin-top: clamp(40px, 6vh, 60px);
}

.index-group {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--i) * 0.07s);
}

.index-grid.in .index-group {
  opacity: 1;
  transform: none;
}

.index-group h3 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1.5px solid var(--ink);
  font-size: 0.95rem;
  font-weight: 700;
}

.index-group h3 span {
  color: var(--gold-ink);
  font-size: 0.82rem;
  font-weight: 650;
}

.index-group ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.index-group li {
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.35;
  cursor: default;
  transition: color 0.2s ease;
}

.index-group li:hover {
  color: var(--ink);
}

.index-group li small {
  color: var(--ink-3);
  font-size: 0.78rem;
}

/* --- Roles ---------------------------------------------------------------------------- */

.roles {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(40px, 6vh, 64px) var(--pad) clamp(80px, 13vh, 140px);
}

.roles h2 {
  text-align: center;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin-top: clamp(36px, 5vh, 56px);
}

.role {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}

.role-icon {
  width: 26px;
  height: 26px;
  margin-bottom: 16px;
  fill: none;
  stroke: var(--gold-ink);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.role h3 {
  margin-bottom: 6px;
  font-size: 1.1rem;
  font-weight: 700;
}

.role p {
  color: var(--ink-2);
  font-size: 0.93rem;
}

/* --- CTA: the finale -------------------------------------------------------------------- */

.cta {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: clamp(96px, 16vh, 160px) var(--pad);
  background: var(--navy);
  color: #fff;
}

.cta-art {
  position: absolute !important;
  inset: 0;
  z-index: 0 !important;
  pointer-events: none;
}

.cta-bloom {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(70vmin, 720px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgb(242 212 138 / 70%), rgb(212 175 90 / 28%) 45%, transparent 72%);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.5);
  transition: opacity 1.6s ease, transform 2s var(--ease);
}

.cta.is-final .cta-bloom {
  opacity: 0.85;
  transform: translate(-50%, -50%) scale(1);
}

.cta-sparks {
  position: absolute;
  top: 50%;
  left: 50%;
}

.cta-sparks i {
  position: absolute;
  width: 2px;
  height: 16px;
  margin: -8px 0 0 -1px;
  border-radius: 2px;
  background: linear-gradient(var(--gold-2), transparent);
  opacity: 0;
  transform: rotate(var(--a)) translateY(-40px);
}

.cta.is-final .cta-sparks i {
  animation: spark 1.6s var(--ease) var(--dl) both;
}

@keyframes spark {
  0% {
    opacity: 0;
    transform: rotate(var(--a)) translateY(-40px);
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: rotate(var(--a)) translateY(calc(var(--r) * -1));
  }
}

.cta-cells {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  -webkit-mask-image: radial-gradient(ellipse 62% 78% at 50% 50%, transparent 30%, #000 55%, transparent 92%);
  mask-image: radial-gradient(ellipse 62% 78% at 50% 50%, transparent 30%, #000 55%, transparent 92%);
}

.cta-cells rect {
  fill: rgb(255 255 255 / 3.5%);
  transition: fill 1.4s ease var(--dl);
}

.cta.is-final .cta-cells rect.lit {
  fill: rgb(212 175 90 / 30%);
}

.cta-card {
  width: min(640px, 100%);
  padding: clamp(36px, 5vw, 56px) clamp(22px, 4vw, 48px);
  border: 1px solid var(--navy-line);
  border-radius: 28px;
  background: var(--navy-2);
  text-align: center;
  transition: background 1.2s ease, border-color 1.2s ease, box-shadow 1.2s ease;
}

.cta.is-final .cta-card {
  border-color: rgb(255 255 255 / 22%);
  background: rgb(23 40 66 / 42%);
  -webkit-backdrop-filter: blur(26px) saturate(160%);
  backdrop-filter: blur(26px) saturate(160%);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 22%), 0 40px 80px -40px rgb(0 0 0 / 70%);
}

.cta-card p {
  max-width: 28rem;
  margin: 14px auto 28px;
  color: rgb(255 255 255 / 70%);
  font-size: 1.04rem;
}

/* --- footer ----------------------------------------------------------------------------- */

.foot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 76px var(--pad) calc(28px + env(safe-area-inset-bottom, 0px));
  color: var(--ink-3);
  font-size: 0.9rem;
}

.foot-contact {
  text-decoration: none;
}

.foot-contact:hover {
  color: var(--ink);
}

.foot-mark {
  position: absolute;
  top: 14px;
  left: 50%;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-left: -24px;
  border-radius: 50%;
}

.foot-mark .brand-mark {
  width: 44px;
  height: 44px;
}

.foot-mark .foot-arc {
  stroke-dasharray: 20;
  stroke-dashoffset: 20;
  transition: stroke-dashoffset 0.6s var(--ease);
}

.foot-mark .foot-dot {
  transform: scale(0);
  transform-origin: 16px 12px;
  transition: transform 0.5s var(--ease) 0.35s;
}

.foot-mark.is-landed .foot-arc {
  stroke-dashoffset: 0;
}

.foot-mark.is-landed .foot-dot {
  transform: none;
}

.foot-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgb(212 175 90 / 50%);
}

.foot-mark.is-landed::after {
  animation: ripple 1.4s var(--ease) 0.4s 1;
}

@keyframes ripple {
  to {
    box-shadow: 0 0 0 18px rgb(212 175 90 / 0%);
  }
}

/* --- tooltip ---------------------------------------------------------------------------- */

.tip {
  position: fixed;
  z-index: 60;
  padding: 7px 11px;
  border-radius: 10px;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, calc(-100% - 10px));
  transition: opacity 0.15s ease;
}

.tip.is-on {
  opacity: 1;
}

/* Short desktop windows: the Ask section still fits one screen. */
@media (min-width: 901px) and (max-height: 740px) {
  .ask-head p:last-child {
    display: none;
  }

  .ask-head .eyebrow {
    margin-bottom: 8px;
  }

  .ask-head h2 {
    font-size: min(clamp(1.9rem, 3vw, 2.6rem), 5.2vh);
  }
}

/* --- tablets ---------------------------------------------------------------------------- */

@media (max-width: 1100px) {
  .rove {
    display: none;
  }

  .nav-links a {
    padding: 8px 9px;
  }

  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: 40px;
  }
}

@media (max-width: 900px) {
  .nav {
    gap: 12px;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .menu-btn {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    margin-left: auto;
    border: 0;
    border-radius: 50%;
    background: transparent;
  }

  .nav.is-open .nav-links {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: grid;
    gap: 2px;
    margin: 0;
    padding: 10px;
    border-radius: 22px;
    background: rgb(246 245 241 / 94%);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    box-shadow: 0 0 0 1px rgb(20 33 58 / 6%), 0 24px 40px -24px rgb(20 33 58 / 40%);
    color: var(--ink);
  }

  .nav.is-open .nav-links a {
    padding: 13px 14px;
    font-size: 1rem;
    opacity: 1;
  }

  .nav.is-open .nav-links .nav-demo {
    display: block;
    margin-top: 6px;
    background: var(--ink);
    color: #fff;
    text-align: center;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 112px;
  }

  .hero-stage {
    height: 400px;
    max-width: 560px;
  }

  .hero-title {
    font-size: min(8vw, 4.4rem);
  }

  .split,
  .split-flip {
    grid-template-columns: 1fr;
  }

  .split-flip .split-visual {
    order: 0;
  }

  .ask-body {
    grid-template-columns: 1fr;
    max-width: 640px;
  }

  .families-body {
    grid-template-columns: 1fr 1fr;
  }

  .phone-wrap {
    grid-column: 1 / -1;
    order: -1;
  }

  .family-facts:first-child {
    text-align: left;
  }

  .role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 36px;
  }
}

/* --- phones ------------------------------------------------------------------------------ */

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .nav {
    height: 56px;
    padding-left: 14px;
    padding-right: 6px;
  }

  .hero {
    gap: 28px;
    padding-top: 104px;
    padding-bottom: 56px;
  }

  .hero-title {
    font-size: min(9.4vw, 3rem);
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .hero-stage {
    height: 300px;
  }

  .f1 {
    width: 80%;
  }

  .f3 {
    top: 30%;
    width: 50%;
  }

  .f2 {
    top: auto;
    bottom: 4%;
    width: 96%;
  }

  .f4 {
    display: none;
  }

  .mini-heat,
  .mini-bars {
    padding: 14px;
  }

  .bars {
    height: 72px;
    gap: 7px;
  }

  .mini-ask {
    font-size: 0.86rem;
  }

  .noise {
    height: 220vh;
  }

  .noise-pin {
    padding-top: 96px;
  }

  .noise-field {
    --k: 0.78;
  }

  .scrap {
    top: 48%;
    font-size: 0.8rem;
  }

  .record {
    top: 48%;
    padding: 18px;
  }

  .split,
  .families,
  .index {
    padding-block: 72px;
  }

  .split {
    gap: 32px;
  }

  .ask {
    padding-block: 72px;
  }

  .ask-head {
    text-align: left;
  }

  .ask-head p:last-child {
    margin-left: 0;
  }

  .ask-card {
    padding: 14px;
  }

  .ask-bar {
    font-size: 0.92rem;
  }

  .ask-row {
    grid-template-columns: 6.2rem 1fr 3rem;
    gap: 10px;
    font-size: 0.82rem;
  }

  .families-head,
  .index-head {
    text-align: left;
  }

  .families-body {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .family-facts {
    gap: 20px;
  }

  .phone {
    width: 250px;
    height: 460px;
  }

  .index-grid {
    display: block;
    columns: 2;
    column-gap: 20px;
  }

  .index-group {
    break-inside: avoid;
    margin-bottom: 32px;
  }

  .index-group li {
    font-size: 0.86rem;
  }

  .roles {
    padding-top: 24px;
  }

  .roles h2 {
    text-align: left;
  }

  .role-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .role {
    display: grid;
    grid-template-columns: 26px 1fr;
    column-gap: 16px;
    padding: 0 0 22px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .role-icon {
    grid-row: span 2;
    margin: 0;
  }

  .cta {
    padding-block: 96px;
  }

  .foot {
    flex-direction: column;
    gap: 6px;
    padding-top: 84px;
    text-align: center;
  }
}

/* --- reduced motion ------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal,
  .hero-title .line > span,
  .bars i,
  .heat i,
  .cover-list li,
  .index-group {
    opacity: 1;
    transform: none;
  }

  .flow .ribbon {
    stroke-dashoffset: 0;
  }

  .noise {
    height: auto;
    --e: 1;
    --p2: 1;
  }

  .noise-pin {
    position: relative;
    height: 100svh;
  }

  .rove {
    display: none;
  }

  .foot-mark .foot-arc {
    stroke-dashoffset: 0;
  }

  .foot-mark .foot-dot {
    transform: none;
  }
}