:root {
  color-scheme: light;
  --night-950: #07111f;
  --ink-fixed: #172033;
  --night-900: #0c1828;
  --night-800: #14233a;
  --night-700: #24344d;
  --slate-950: #172033;
  --slate-800: #344054;
  --slate-600: #596579;
  --slate-500: #8490a3;
  --slate-400: #aab2c0;
  --slate-300: #cdd2da;
  --slate-200: #e1e5ea;
  --slate-100: #eef1f4;
  --slate-50: #f7f8fa;
  --paper: #fcfbf7;
  --white: #ffffff;
  --blue-900: #12316b;
  --blue-700: #1b5ac8;
  --blue-500: #4386ec;
  --blue-300: #91b9f8;
  --blue-100: #e5efff;
  --green-700: #267a2c;
  --green-500: #2db400;
  --green-100: #e5f7df;
  --amber-700: #9a6900;
  --amber-500: #d49700;
  --amber-100: #fff2ce;
  --red-700: #930000;
  --red-500: #d64a4a;
  --red-100: #ffe5e5;
  --violet-700: #7435b6;
  --violet-500: #9e4bef;
  --violet-100: #f1e6fc;
  --shadow-sm: 0 1px 2px rgb(7 17 31 / 8%), 0 4px 12px rgb(7 17 31 / 6%);
  --shadow-md: 0 18px 50px rgb(7 17 31 / 16%);
  --shadow-lg: 0 36px 90px rgb(0 5 14 / 38%);
  --radius-sm: 0.55rem;
  --radius-md: 1rem;
  --radius-lg: 1.4rem;
  --page: var(--paper);
  --surface: var(--white);
  --surface-muted: var(--slate-50);
  --text: var(--slate-950);
  --text-muted: var(--slate-600);
  --line: var(--slate-200);
  --hero-bg: #f7f0dc;
  --hero-text: var(--slate-950);
  --story-bg: #f2eadf;
  --product-bg: #e8f0f4;
  --architecture-bg: #ccf4df;
  --hard-shadow: 10px 10px 0 var(--slate-950);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--page);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin-block-start: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

.skip-link {
  position: fixed;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--white);
  color: var(--night-950);
  font-weight: 750;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--blue-300);
  outline-offset: 4px;
}

.section-shell,
.site-header,
.hero,
.promise-strip {
  width: min(100% - 2rem, 76rem);
  margin-inline: auto;
}

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 2px solid var(--slate-950);
  color: var(--hero-text);
}

.wordmark {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.wordmark em {
  color: var(--slate-600);
  font-style: normal;
  font-weight: 650;
}

.wordmark-mark {
  width: 1.05rem;
  aspect-ratio: 1;
  background: var(--blue-500);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
}

nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

nav a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  padding-inline: 0.8rem;
  color: var(--slate-800);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

nav a:hover {
  color: var(--blue-700);
}

.night {
  position: relative;
  overflow: hidden;
  background: var(--hero-bg);
  color: var(--hero-text);
}

.hero {
  position: relative;
  z-index: 1;
  min-height: 54rem;
  display: grid;
  align-items: center;
  gap: clamp(3rem, 7vw, 6rem);
  padding-block: clamp(8.5rem, 15vw, 12rem) 7rem;
}

.signal-map {
  position: absolute;
  inset: 0 auto auto 50%;
  z-index: -1;
  width: 100vw;
  height: 100%;
  transform: translateX(-50%);
  fill: var(--blue-700);
  opacity: 0.5;
  overflow: visible;
  pointer-events: none;
}

.signal-map path {
  fill: none;
  stroke: var(--blue-700);
  stroke-width: 1.5;
  stroke-dasharray: 5 13;
}

.eyebrow,
.section-label,
.board-kicker,
.record-label,
.detail-label,
.node-cap {
  margin-block-end: 1rem;
  color: var(--blue-700);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 10ch;
  margin-block-end: 1.75rem;
  font-size: clamp(3.3rem, 8vw, 6.8rem);
  line-height: 0.94;
  letter-spacing: -0.065em;
}

.hero h1 span {
  color: var(--blue-700);
  text-decoration: underline;
  text-decoration-color: #ff6d67;
  text-decoration-thickness: 0.11em;
  text-underline-offset: 0.08em;
}

.hero-intro {
  max-width: 39rem;
  margin-block-end: 0.85rem;
  color: var(--slate-800);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.65;
}

.hero-intro-quiet {
  color: var(--slate-600);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-start: 2rem;
}

.button {
  min-height: 3.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.15rem;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.45rem;
  font-size: 0.9rem;
  font-weight: 780;
  text-decoration: none;
}

.button-primary {
  background: #ffd84d;
  color: var(--ink-fixed);
  box-shadow: 0 6px 0 var(--ink-fixed);
}

.button-install {
  background: #a8efc8;
  color: #172033;
  box-shadow: 0 6px 0 #172033;
  font-family: inherit;
  cursor: pointer;
}

.install-dialog {
  max-width: min(34rem, calc(100% - 2rem));
  max-height: 90dvh;
  padding: 2rem;
  border: 2px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  color: var(--text);
}
.install-dialog::backdrop { background: #07111fcc; }
.install-dialog form { text-align: end; margin-bottom: 1rem; }

.button-quiet {
  background: var(--white);
  color: var(--ink-fixed);
  box-shadow: 0 6px 0 var(--blue-700);
}

.button:hover:not(.button-disabled) {
  transform: translateY(-3px) rotate(-1deg);
}

.button-primary:hover {
  background: #ffe477;
}

.button-quiet:hover {
  border-color: var(--ink-fixed);
}

.button:active:not(.button-disabled) {
  transform: translateY(4px);
  box-shadow: 0 2px 0 var(--ink-fixed);
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding-block: 4rem;
}

.planner-window {
  position: relative;
  z-index: 2;
  overflow: hidden;
  width: min(46rem, 100%);
  margin-inline: auto;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.9rem;
  background: var(--surface);
  color: var(--slate-950);
  box-shadow: 14px 14px 0 var(--blue-700);
  transform: perspective(90rem) rotateX(var(--tilt-x, 0deg)) rotateY(calc(-3deg + var(--tilt-y, 0deg))) rotateZ(1.5deg);
  transition: transform 140ms ease-out;
}

.window-topbar {
  min-height: 3.1rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding-inline: 1rem;
  border-bottom: 1px solid var(--slate-200);
  background: var(--slate-50);
  color: var(--slate-600);
  font-size: 0.65rem;
  font-weight: 650;
}

.window-topbar b {
  justify-self: end;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  background: var(--green-100);
  color: var(--green-700);
  font-size: 0.58rem;
  text-transform: uppercase;
}

.window-dots {
  display: flex;
  gap: 0.32rem;
}

.window-dots i {
  width: 0.45rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--slate-300);
}

.window-body {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr) 9rem;
  min-height: 29rem;
}

.window-nav {
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
  padding: 1rem 0.65rem;
  background: var(--slate-100);
}

.window-logo {
  width: 1.6rem;
  height: 0.45rem;
  margin: 0.15rem 0.45rem 1.2rem;
  border-radius: 1rem;
  background: var(--blue-700);
}

.window-nav-item {
  width: 100%;
  min-height: 2rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.42rem;
  padding: 0.35rem 0.45rem;
  border: 0;
  border-radius: 0.38rem;
  background: transparent;
  color: var(--slate-600);
  font-family: inherit;
  font-size: 0.63rem;
  text-align: start;
  cursor: pointer;
}

.window-nav-item b {
  font-weight: 700;
}

.window-nav-item.active {
  background: var(--blue-100);
  color: var(--blue-900);
}

.window-nav-item:hover {
  background: var(--slate-200);
  color: var(--slate-950);
}

.window-nav-spacer {
  flex: 1;
}

.color-dot {
  width: 0.4rem;
  aspect-ratio: 1;
  display: inline-block;
  border-radius: 50%;
}

.blue { background: var(--blue-700); }
.amber { background: var(--amber-500); }
.violet { background: var(--violet-500); }
.green { background: var(--green-500); }
.red { background: var(--red-500); }

.window-tasks {
  min-width: 0;
  padding: 1.35rem;
}

.task-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 1rem;
}

.task-heading small {
  color: var(--blue-700);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.task-heading h2 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.task-heading > span,
.task-progress {
  color: var(--slate-500);
  font-size: 0.61rem;
  white-space: nowrap;
}

.task {
  position: relative;
  min-height: 3.4rem;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--slate-200);
  background: transparent;
  color: inherit;
  font-family: inherit;
  text-align: start;
  cursor: pointer;
}

.task:not(.child) .tree-branch {
  display: none;
}

.task:hover {
  background: var(--slate-50);
}

.task.child {
  padding-inline-start: 1.25rem;
}

.checkbox {
  position: relative;
  z-index: 1;
  width: 0.95rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--slate-400);
  border-radius: 50%;
  background: var(--white);
  color: var(--white);
  font-size: 0.6rem;
}

.priority-red .checkbox {
  border-color: var(--red-500);
}

.priority-amber .checkbox {
  border-color: var(--amber-500);
}

.complete .checkbox {
  border-color: var(--green-500);
  background: var(--green-500);
}

.tree-branch {
  position: absolute;
  inset-block: 0 50%;
  inset-inline-start: 0.3rem;
  width: 0.7rem;
  border-inline-start: 1px solid var(--slate-300);
  border-block-end: 1px solid var(--slate-300);
}

.task-text {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.task-text b {
  overflow: hidden;
  font-size: 0.69rem;
  font-weight: 720;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.task-text small {
  color: var(--slate-500);
  font-size: 0.57rem;
}

.complete .task-text b {
  color: var(--slate-500);
  text-decoration: line-through;
}

.focus-bar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-start: 1.2rem;
  padding: 0.75rem 0.85rem;
  border: 0;
  border-radius: 0.45rem;
  background: var(--night-900);
  color: var(--white);
  font-size: 0.62rem;
  font-family: inherit;
  text-align: start;
  cursor: pointer;
}

.focus-bar:hover,
.focus-bar.running {
  background: var(--blue-900);
}

.focus-bar span {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.focus-bar i {
  width: 0.7rem;
  aspect-ratio: 1;
  border: 2px solid var(--blue-300);
  border-inline-end-color: transparent;
  border-radius: 50%;
}

.window-detail {
  display: flex;
  flex-direction: column;
  padding: 1.35rem 1rem;
  background: var(--slate-50);
}

.detail-label {
  margin: 0.75rem 0 0.12rem;
  color: var(--slate-500);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
}

.detail-label:first-child {
  margin-block-start: 0;
}

.window-detail strong {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--slate-800);
  font-size: 0.62rem;
  line-height: 1.35;
}

.progress-track {
  height: 0.28rem;
  margin-block-start: 0.5rem;
  overflow: hidden;
  border-radius: 1rem;
  background: var(--slate-200);
}

.progress-track i {
  width: 25%;
  height: 100%;
  display: block;
  background: var(--blue-700);
}

.signal-chip {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.65rem;
  background: #ffdf61;
  color: var(--ink-fixed);
  box-shadow: 6px 6px 0 var(--ink-fixed);
  font-size: 0.72rem;
  line-height: 1.25;
  pointer-events: none;
}

.signal-chip small {
  display: block;
  margin-block-end: 0.12rem;
  color: #344054;
  font-size: 0.54rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-icon {
  width: 1.7rem;
  aspect-ratio: 1;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
}

.pause-icon {
  border: 1px solid var(--amber-500);
}

.pause-icon::before {
  content: "";
  width: 0.45rem;
  height: 0.6rem;
  border-inline: 2px solid var(--amber-500);
}

.check-icon {
  background: var(--green-500);
  color: var(--night-950);
  font-weight: 900;
}

.signal-chip-context {
  inset: 0 auto auto -1rem;
}

.signal-chip-offline {
  inset: auto -1rem 0 auto;
  background: #a8efc8;
}

.signal-chip-week {
  inset: 1.5rem -1.25rem auto auto;
}

.signal-chip-focus {
  inset: auto auto 1rem -1.25rem;
}

.week-icon,
.focus-icon {
  display: grid;
  flex: 0 0 auto;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 2px solid var(--ink-fixed);
  border-radius: 999px;
  color: var(--ink-fixed);
  font-size: 0.72rem;
  font-weight: 900;
}

.week-icon {
  background: #efc3ff;
}

.focus-icon {
  border-color: var(--violet-500);
  border-right-color: transparent;
}

.promise-strip {
  position: relative;
  z-index: 2;
  display: grid;
  margin-block-end: 2rem;
  padding: 0;
  border: 2px solid var(--ink-fixed);
  background: var(--white);
  color: var(--ink-fixed);
  box-shadow: 8px 8px 0 var(--ink-fixed);
}

.promise-strip div {
  padding: 1.25rem;
  border-bottom: 2px solid var(--ink-fixed);
}

.promise-strip div:nth-child(1) { background: #a8efc8; }
.promise-strip div:nth-child(2) { background: #f0c5ff; }
.promise-strip div:nth-child(3) { background: #ffdf61; }
.promise-strip div:nth-child(4) { background: #a8d2ff; }

.promise-strip dt {
  margin-block-end: 0.2rem;
  color: var(--ink-fixed);
  font-size: 0.86rem;
  font-weight: 760;
}

.promise-strip dd {
  color: #344054;
  font-size: 0.75rem;
}

.story,
.architecture {
  padding-block: clamp(5.5rem, 12vw, 10rem);
}

.story {
  position: relative;
  display: grid;
  gap: clamp(3rem, 7vw, 6rem);
  background: var(--story-bg);
  box-shadow: 0 0 0 100vmax var(--story-bg);
  clip-path: inset(0 -100vmax);
}

.story-copy,
.interruption-figure {
  position: relative;
  z-index: 1;
}

.story-motion {
  position: absolute;
  inset: 2rem auto auto 50%;
  width: 100vw;
  display: grid;
  color: var(--text);
  font-size: clamp(6rem, 18vw, 18rem);
  font-weight: 900;
  letter-spacing: -0.09em;
  line-height: 0.62;
  opacity: 0.035;
  pointer-events: none;
  transform: translateX(-50%) rotate(-4deg);
}

.story-motion span:nth-child(2) {
  justify-self: center;
}

.story-motion span:last-child {
  justify-self: end;
}

.section-label {
  color: var(--blue-700);
}

.story h2,
.product h2,
.architecture h2,
.source h2 {
  margin-block-end: 1.5rem;
  font-size: clamp(2.35rem, 5vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.story-copy {
  max-width: 44rem;
}

.story-copy .lead {
  color: var(--slate-800);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.7;
}

.story-copy > p:last-child {
  color: var(--text-muted);
}

.interruption-figure {
  position: relative;
  min-height: 30rem;
  padding-block-end: 6rem;
}

.record-card {
  position: absolute;
  width: min(22rem, 82%);
  min-height: 15rem;
  padding: 1.5rem;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.7rem;
  box-shadow: 8px 8px 0 var(--ink-fixed);
}

.record-card .record-label {
  display: block;
  margin-block-end: 0.5rem;
}

.record-card > strong {
  display: block;
  font-size: 1.65rem;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.record-list {
  inset: 0 auto auto 0;
  background: var(--surface);
  transform: rotate(-3deg);
}

.record-list > strong {
  color: var(--red-700);
}

.ghost-task {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem;
  margin-block-start: 1rem;
}

.ghost-task i {
  width: 0.85rem;
  aspect-ratio: 1;
  border: 1.5px solid var(--red-500);
  border-radius: 50%;
}

.ghost-task span,
.ghost-task b {
  height: 0.45rem;
  border-radius: 1rem;
  background: var(--slate-200);
}

.ghost-task b {
  width: 2.8rem;
  background: var(--red-100);
}

.record-context {
  inset: 8rem 0 auto auto;
  z-index: 2;
  background: #ff6d67;
  color: var(--ink-fixed);
  transform: rotate(2deg);
}

.record-context .record-label {
  color: var(--ink-fixed);
}

.record-context p {
  margin-block-start: 1rem;
  color: var(--ink-fixed);
}

.return-timeline {
  position: absolute;
  inset: auto 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.return-timeline::before,
.return-timeline::after {
  content: "";
  position: absolute;
  inset: 1rem 8% auto;
  height: 3px;
  transform-origin: left;
}

.return-timeline::before {
  background: var(--slate-300);
}

.return-timeline::after {
  background: linear-gradient(90deg, var(--blue-500) 0 38%, #ff6d67 38% 62%, var(--green-500) 62%);
}

.return-timeline li {
  position: relative;
  z-index: 1;
  padding-block-start: 2.2rem;
}

.return-timeline li::before {
  content: "";
  position: absolute;
  inset: 0.45rem auto auto 0.45rem;
  width: 1.05rem;
  aspect-ratio: 1;
  border: 3px solid var(--story-bg);
  border-radius: 0.2rem;
  background: var(--blue-500);
  box-shadow: 0 0 0 2px var(--blue-500);
}

.return-timeline .timeline-interruption::before {
  background: #ff6d67;
  box-shadow: 0 0 0 2px #ff6d67;
  transform: rotate(45deg);
}

.return-timeline .timeline-return::before {
  background: var(--green-500);
  box-shadow: 0 0 0 2px var(--green-500);
}

.return-timeline span,
.return-timeline strong,
.return-timeline small {
  display: block;
}

.return-timeline span {
  color: var(--blue-300);
  font-size: 0.58rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.return-timeline strong {
  margin-block: 0.18rem;
  font-size: 0.76rem;
}

.return-timeline small {
  color: var(--text-muted);
  font-size: 0.66rem;
}

.product {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5.5rem, 12vw, 10rem);
  background: var(--product-bg);
}

.product > .section-shell {
  position: relative;
  z-index: 1;
}

.tree-motion {
  position: absolute;
  inset: 20% 0 auto auto;
  width: min(24rem, 35vw);
  height: 55%;
  color: var(--blue-700);
  opacity: 0.11;
  pointer-events: none;
}

.tree-motion::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 18%;
  border-inline-start: 3px solid currentColor;
}

.tree-motion i {
  position: absolute;
  inset-inline-start: 18%;
  width: var(--branch-width);
  height: 4rem;
  border-inline-start: 3px solid currentColor;
  border-block-end: 3px solid currentColor;
}

.tree-motion i:nth-child(1) { --branch-width: 38%; inset-block-start: 4%; }
.tree-motion i:nth-child(2) { --branch-width: 62%; inset-block-start: 22%; }
.tree-motion i:nth-child(3) { --branch-width: 46%; inset-block-start: 40%; }
.tree-motion i:nth-child(4) { --branch-width: 76%; inset-block-start: 58%; }
.tree-motion i:nth-child(5) { --branch-width: 54%; inset-block-start: 76%; }

.product-heading {
  display: grid;
  gap: 1.5rem;
  margin-block-end: clamp(3rem, 7vw, 6rem);
}

.product-heading h2 {
  max-width: 15ch;
}

.product-heading > p {
  max-width: 35rem;
  align-self: end;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.tree-stage {
  position: relative;
}

.tree-board {
  overflow: hidden;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.85rem;
  background: var(--surface);
  box-shadow: 12px 12px 0 var(--blue-700);
}

.tree-board-top {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(1.3rem, 4vw, 2.25rem);
  background: #ff6d67;
  color: var(--ink-fixed);
}

.board-kicker {
  display: block;
  margin-block-end: 0.3rem;
}

.tree-board-top .board-kicker {
  color: var(--ink-fixed);
}

.tree-board-top h3 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  letter-spacing: -0.035em;
}

.board-progress {
  text-align: end;
}

.board-progress strong {
  display: block;
  color: var(--ink-fixed);
  font-size: 1.7rem;
  line-height: 1;
}

.board-progress span {
  color: #344054;
  font-size: 0.68rem;
}

.tree-grid {
  display: grid;
}

.tree-list {
  padding: 1rem;
}

.tree-row {
  position: relative;
  min-height: 3.4rem;
  display: grid;
  grid-template-columns: 2.75rem 2.75rem minmax(0, 1fr);
  align-items: center;
  gap: 0.1rem;
  padding-inline: 0.2rem 0.65rem;
  border-radius: 0.45rem;
  color: var(--slate-800);
}

.tree-row[hidden] {
  display: none;
}

.tree-row:hover,
.tree-row.selected {
  background: #ffef9f;
  color: var(--ink-fixed);
}

.tree-row:hover b,
.tree-row:hover small,
.tree-row:hover .tree-toggle,
.tree-row.selected b,
.tree-row.selected small,
.tree-row.selected .tree-toggle {
  color: var(--ink-fixed);
}

.tree-row:hover .checkbox,
.tree-row.selected .checkbox {
  border-color: var(--ink-fixed);
  background: #fff;
  color: var(--ink-fixed);
}

.tree-row.done:hover .checkbox,
.tree-row.done.selected .checkbox {
  border-color: var(--green-500);
  background: var(--green-500);
  color: #fff;
}

.tree-row.level-1 {
  margin-inline-start: 1.5rem;
}

.tree-row.level-2 {
  margin-inline-start: 3rem;
}

.tree-row.level-3 {
  margin-inline-start: 4.5rem;
}

.tree-toggle,
.tree-toggle-spacer,
.tree-check {
  width: 2.75rem;
  min-height: 2.75rem;
}

.tree-toggle,
.tree-check,
.tree-label,
.detail-check {
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
}

.tree-toggle,
.tree-check,
.detail-check {
  display: grid;
  place-items: center;
  padding: 0;
  cursor: pointer;
}

.tree-toggle {
  color: var(--slate-500);
  font-size: 1rem;
  font-weight: 850;
}

.tree-row .checkbox {
  width: 1.05rem;
}

.tree-label {
  min-width: 0;
  min-height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0;
  text-align: start;
  cursor: pointer;
}

.tree-row b {
  font-size: 0.86rem;
  font-weight: 700;
}

.tree-row small {
  color: var(--slate-500);
  font-size: 0.7rem;
}

.tree-row.done b {
  color: var(--slate-500);
  text-decoration: line-through;
}

.tree-row.done .checkbox {
  border-color: var(--green-500);
  background: var(--green-500);
}

.tree-row .branch {
  position: absolute;
  inset-block: 0 50%;
  inset-inline-start: -0.8rem;
  width: 0.8rem;
  border-inline-start: 1px solid var(--slate-300);
  border-block-end: 1px solid var(--slate-300);
}

.tree-row:focus-within {
  box-shadow: inset 0 0 0 2px var(--blue-500);
}

.tree-detail {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--slate-50);
}

.detail-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.detail-check {
  min-width: 2.75rem;
  min-height: 2.75rem;
  margin: -0.75rem 0 -0.75rem -0.75rem;
}

.detail-title h3 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.tree-detail > p {
  margin: 1rem 0 1.75rem;
  color: var(--text-muted);
}

.tree-detail dl div {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: 0.65rem;
  border-bottom: 1px solid var(--line);
}

.tree-detail dt {
  color: var(--slate-500);
  font-size: 0.75rem;
  font-weight: 650;
}

.tree-detail dd {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--slate-800);
  font-size: 0.78rem;
  font-weight: 680;
}

.priority-mark {
  width: 0.42rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--red-500);
}

.detail-note {
  margin-block-start: 1.5rem;
  padding: 1rem;
  border-radius: 0.5rem;
  background: var(--amber-100);
  color: #624600;
  font-size: 0.77rem;
}

.detail-note > span:first-child {
  display: block;
  margin-block-end: 0.25rem;
  font-size: 0.61rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-note [data-detail-note] {
  display: inline;
  font-size: inherit;
  font-weight: inherit;
  letter-spacing: normal;
  text-transform: none;
}

.tree-notes {
  display: grid;
  gap: 1.5rem;
  margin-block-start: 2.5rem;
}

.tree-notes article {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  column-gap: 0.75rem;
}

.tree-notes article > span {
  grid-row: 1 / 3;
  color: var(--blue-700);
  font-size: 0.72rem;
  font-weight: 850;
}

.tree-notes h3 {
  margin-block-end: 0.35rem;
  font-size: 1rem;
}

.tree-notes p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.architecture {
  position: relative;
  display: grid;
  gap: clamp(3rem, 7vw, 6rem);
  background: var(--architecture-bg);
  box-shadow: 0 0 0 100vmax var(--architecture-bg);
  clip-path: inset(0 -100vmax);
}

.architecture-copy h2 {
  max-width: 13ch;
}

.architecture-copy > p {
  max-width: 42rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.architecture-status {
  padding-inline-start: 1rem;
  border-inline-start: 5px solid #ff6d67;
  font-size: 0.85rem !important;
}

.system-map {
  display: grid;
  justify-items: center;
  gap: 1.25rem;
}

.system-node {
  width: min(17rem, 100%);
  padding: 1.25rem;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.7rem;
  background: var(--surface);
  box-shadow: 7px 7px 0 var(--ink-fixed);
  text-align: start;
}

.node-cap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 1rem;
  color: var(--slate-500);
}

.node-cap b {
  padding: 0.22rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  color: var(--green-700);
  font-size: 0.58rem;
  text-transform: uppercase;
}

.local-actions {
  display: grid;
  gap: 0.45rem;
}

.local-actions span {
  min-height: 2.4rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface-muted);
  font-size: 0.72rem;
  font-weight: 720;
}

.local-actions i {
  width: 0.55rem;
  aspect-ratio: 1;
  border: 2px solid var(--blue-500);
  border-radius: 50%;
}

.local-actions small,
.storage-block small,
.server-flow small,
.sync-label small {
  color: var(--slate-500);
  font-size: 0.58rem;
  font-weight: 600;
}

.storage-block {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-block-start: 0.85rem;
  padding: 0.75rem;
  border-radius: 0.4rem;
  background: var(--night-900);
  color: var(--white);
}

.storage-block strong {
  font-size: 0.78rem;
}

.sync-route {
  display: grid;
  justify-items: center;
  gap: 0.8rem;
  width: 100%;
}

.sync-label {
  width: min(15rem, 100%);
  display: grid;
  padding: 0.55rem 0.65rem;
  border: 2px solid var(--ink-fixed);
  border-radius: 0.4rem;
  background: #ffdf61;
  box-shadow: 3px 3px 0 var(--ink-fixed);
  color: var(--ink-fixed);
  text-align: center;
}

.sync-online {
  background: #a8efc8;
}

.sync-label b {
  font-size: 0.68rem;
}

.sync-track {
  position: relative;
  width: 3px;
  height: 5rem;
  background: var(--slate-300);
}

.sync-track::after {
  content: "";
  position: absolute;
  inset: auto auto -0.15rem 50%;
  border: 0.35rem solid transparent;
  border-block-start-color: var(--slate-300);
  transform: translateX(-50%);
}

.sync-track i {
  position: absolute;
  inset: 0 auto auto 50%;
  width: 0.72rem;
  aspect-ratio: 1;
  border: 2px solid var(--architecture-bg);
  border-radius: 0.15rem;
  background: var(--blue-500);
  box-shadow: 0 0 0 2px var(--blue-500);
  opacity: 0;
  transform: translate(-50%, -50%);
}

.sync-track i:nth-child(2) {
  background: #ff6d67;
  box-shadow: 0 0 0 2px #ff6d67;
}

.sync-track i:nth-child(3) {
  background: var(--green-500);
  box-shadow: 0 0 0 2px var(--green-500);
}

.server-flow {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 0.45rem;
}

.server-flow span {
  min-width: 0;
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface-muted);
  text-align: center;
}

.server-flow b {
  font-size: 0.65rem;
}

.server-flow > i {
  width: 2px;
  height: 0.7rem;
  justify-self: center;
  background: var(--blue-500);
}

.system-caption {
  max-width: 42rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.78rem;
  text-align: center;
}

.source {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5.5rem, 12vw, 9rem);
  background: #5b4bdb;
  color: var(--white);
}

.source-pattern {
  position: absolute;
  inset: 0 0 0 auto;
  width: 45%;
  opacity: 0.22;
  transform: rotate(-12deg) scale(1.2);
}

.source-pattern i {
  position: absolute;
  inset-inline-end: calc(var(--i, 0) * 12%);
  width: 1px;
  height: 130%;
  background: var(--blue-100);
}

.source-pattern i:nth-child(1) { --i: 1; }
.source-pattern i:nth-child(2) { --i: 2; }
.source-pattern i:nth-child(3) { --i: 3; }
.source-pattern i:nth-child(4) { --i: 4; }
.source-pattern i:nth-child(5) { --i: 5; }

.source-inner {
  position: relative;
  display: grid;
  gap: 2rem;
}

.source .section-label {
  color: var(--blue-100);
}

.source h2 {
  max-width: 13ch;
  margin: 0;
}

.source-action {
  align-self: end;
}

.source-action p {
  max-width: 34rem;
  color: var(--blue-100);
}

.button-disabled {
  border-color: var(--white);
  color: var(--white);
  box-shadow: 0 5px 0 var(--night-950);
  cursor: not-allowed;
}

footer {
  min-height: 7rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

@media (min-width: 44rem) {
  .promise-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .promise-strip div {
    padding-inline: 1.5rem;
    border-inline-start: 2px solid var(--ink-fixed);
  }

  .promise-strip div:nth-child(odd) {
    border-inline-start: 0;
  }

  .promise-strip div:nth-child(n + 3) {
    border-bottom: 0;
  }

  .tree-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  }

  .tree-notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 62rem) {
  .section-shell,
  .site-header,
  .hero,
  .promise-strip {
    width: min(100% - 4rem, 76rem);
  }

  .hero {
    grid-template-columns: minmax(0, 0.85fr) minmax(31rem, 1.15fr);
  }

  .hero-visual {
    margin-inline-end: -5rem;
  }

  .promise-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .promise-strip div:first-child {
    border-inline-start: 0;
  }

  .promise-strip div {
    border-bottom: 0;
  }

  .promise-strip div:nth-child(odd) {
    border-inline-start: 2px solid var(--ink-fixed);
  }

  .promise-strip div:first-child {
    border-inline-start: 0;
  }

  .story {
    grid-template-columns: minmax(0, 0.95fr) minmax(28rem, 1.05fr);
    align-items: center;
  }

  .product-heading {
    grid-template-columns: minmax(0, 1.25fr) minmax(20rem, 0.75fr);
  }

  .architecture {
    grid-template-columns: minmax(0, 1fr) minmax(33rem, 1fr);
    align-items: center;
  }

  .system-map {
    width: 100%;
    grid-template-columns: minmax(0, 11.5rem) minmax(8rem, 1fr) minmax(0, 11.5rem);
    gap: 0.8rem;
  }

  .system-node {
    width: 100%;
  }

  .sync-route {
    min-width: 0;
  }

  .sync-label {
    width: min(10rem, 100%);
  }

  .sync-track {
    width: 100%;
    height: 3px;
  }

  .sync-track::after {
    inset: 50% -0.25rem auto auto;
    border-block-start-color: transparent;
    border-inline-start-color: var(--slate-300);
    transform: translateY(-50%);
  }

  .sync-track i {
    inset: 50% auto auto 0;
    transform: translate(-50%, -50%);
  }

  .system-caption {
    grid-column: 1 / -1;
  }

  .source-inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(21rem, 0.8fr);
  }
}

@media (max-width: 61.99rem) {
  .hero {
    padding-block-end: 4rem;
  }

  .hero-copy {
    max-width: 44rem;
  }

  .hero-visual {
    width: min(44rem, 100%);
    margin-inline: auto;
  }
}

@media (max-width: 43.99rem) {
  .site-header {
    min-height: 7.5rem;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 0.8rem;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  nav a {
    padding-inline: 0;
  }

  .hero {
    padding-block-start: 10.5rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 15vw, 4.7rem);
  }

  .hero-visual {
    padding-block: 2.5rem 4rem;
  }

  .planner-window {
    transform: none;
  }

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

  .window-nav {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding: 0.65rem;
  }

  .window-logo,
  .window-nav-spacer,
  .window-detail {
    display: none;
  }

  .window-nav-item {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.4rem 0.15rem;
    text-align: center;
  }

  .window-nav-item b {
    display: none;
  }

  .signal-chip {
    max-width: 13rem;
  }

  .signal-chip-context {
    inset-inline-start: -0.35rem;
  }

  .signal-chip-offline {
    inset-inline-end: -0.35rem;
  }

  .signal-chip-week,
  .signal-chip-focus {
    display: none;
  }

  .interruption-figure {
    min-height: 43rem;
  }

  .record-context {
    inset-block-start: 11rem;
  }

  .return-timeline {
    inset: auto 0 0;
    grid-template-columns: 1fr;
    padding-inline-start: 1.5rem;
  }

  .return-timeline::before,
  .return-timeline::after {
    inset: 0 auto 0 0.5rem;
    width: 3px;
    height: auto;
    transform-origin: top;
  }

  .return-timeline li {
    padding: 0 0 0.8rem 1.25rem;
  }

  .return-timeline li::before {
    inset: 0.25rem auto auto -1.45rem;
  }

  .tree-board-top {
    align-items: start;
    flex-direction: column;
  }

  .board-progress {
    text-align: start;
  }

  .tree-row {
    padding-inline: 0.25rem;
  }

  .tree-row.level-1 {
    margin-inline-start: 0.75rem;
  }

  .tree-row.level-2 {
    margin-inline-start: 1.5rem;
  }

  .tree-row.level-3 {
    margin-inline-start: 2.25rem;
  }

  .tree-row {
    grid-template-columns: 2.75rem 2.75rem minmax(0, 1fr);
  }

  .tree-motion {
    width: 70vw;
    opacity: 0.07;
  }

}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #111720;
    --surface: #19212d;
    --surface-muted: #202a37;
    --text: #f4f6f9;
    --text-muted: #aab4c3;
    --line: #354052;
    --hero-bg: #0b1020;
    --hero-text: #f4f6f9;
    --story-bg: #211d1b;
    --product-bg: #121e2a;
    --architecture-bg: #10261f;
    --slate-950: #f4f6f9;
    --slate-800: #d9dee7;
    --slate-600: #aab4c3;
    --slate-500: #8d99aa;
    --slate-400: #7a8799;
    --slate-300: #566377;
    --slate-200: #354052;
    --slate-100: #202a37;
    --slate-50: #151d28;
    --blue-100: #1b355c;
    --blue-700: #6ea8ff;
    --green-700: #73d77b;
    --red-700: #ff7a73;
    --green-100: #203f29;
    --amber-100: #483b1a;
    --red-100: #4a2429;
    --shadow-sm: 0 2px 10px rgb(0 0 0 / 22%);
    --shadow-md: 0 18px 50px rgb(0 0 0 / 32%);
  }

  .checkbox {
    background: var(--surface);
  }

  .complete .checkbox,
  .tree-row.done .checkbox {
    background: var(--green-500);
  }

  .detail-note {
    color: #ffe9a8;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .signal-map path {
    animation: signal-flow 18s linear infinite;
  }

  .signal-chip-context {
    animation: drift-up 5.8s ease-in-out infinite;
  }

  .signal-chip-week {
    animation: drift-side 6.4s ease-in-out -1.4s infinite;
  }

  .signal-chip-focus {
    animation: drift-up 7.1s ease-in-out -3.2s infinite reverse;
  }

  .signal-chip-offline {
    animation: drift-side 6.1s ease-in-out -2.1s infinite reverse;
  }

  .signal-chip-offline .check-icon {
    animation: sync-pulse 3s ease-in-out infinite;
  }

  .focus-bar.running i {
    animation: focus-spin 900ms linear infinite;
  }

  .story-motion span {
    animation: word-drift 10s ease-in-out infinite alternate;
  }

  .story-motion span:nth-child(2) { animation-delay: -3.3s; }
  .story-motion span:nth-child(3) { animation-delay: -6.6s; }

  .return-timeline li::before {
    animation: timeline-beat 4.8s ease-in-out infinite;
  }

  .return-timeline li:nth-child(2)::before { animation-delay: -3.2s; }
  .return-timeline li:nth-child(3)::before { animation-delay: -1.6s; }

  .tree-motion i {
    transform-origin: left bottom;
    animation: branch-breathe 6s ease-in-out infinite alternate;
  }

  .tree-motion i:nth-child(2) { animation-delay: -1.2s; }
  .tree-motion i:nth-child(3) { animation-delay: -2.4s; }
  .tree-motion i:nth-child(4) { animation-delay: -3.6s; }
  .tree-motion i:nth-child(5) { animation-delay: -4.8s; }

  .sync-track i {
    animation: sync-down 3.2s linear infinite;
  }

  .sync-track i:nth-child(2) { animation-delay: -1.07s; }
  .sync-track i:nth-child(3) { animation-delay: -2.14s; }

  .source-pattern i {
    animation: source-sway 7s ease-in-out infinite alternate;
    animation-delay: calc(var(--i) * -0.7s);
  }

  .button,
  .promise-strip div,
  .record-card,
  .system-node,
  .tree-notes article,
  .tree-row,
  .sync-route span {
    transition: background-color 160ms ease, border-color 160ms ease, box-shadow 180ms ease, transform 180ms ease;
  }

  @keyframes signal-flow {
    to { stroke-dashoffset: -180; }
  }

  @keyframes drift-up {
    50% { transform: translateY(-0.55rem) rotate(-1deg); }
  }

  @keyframes drift-side {
    50% { transform: translate(0.45rem, -0.25rem) rotate(1deg); }
  }

  @keyframes sync-pulse {
    50% { box-shadow: 0 0 0 0.45rem rgb(45 180 0 / 12%); }
  }

  @keyframes focus-spin {
    to { transform: rotate(1turn); }
  }

  @keyframes word-drift {
    from { translate: -2.5rem 0; }
    to { translate: 2.5rem 0; }
  }

  @keyframes timeline-beat {
    45%, 55% { scale: 1; }
    50% { scale: 1.45; }
  }

  @keyframes branch-breathe {
    from { scale: 0.72 1; opacity: 0.45; }
    to { scale: 1 1; opacity: 1; }
  }

  @keyframes sync-down {
    0% { top: 0; opacity: 0; }
    12%, 88% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
  }

  @keyframes source-sway {
    from { translate: 0 -3%; }
    to { translate: 0 3%; }
  }
}

@media (min-width: 62rem) and (prefers-reduced-motion: no-preference) {
  .sync-track i {
    animation-name: sync-across;
  }

  @keyframes sync-across {
    0% { left: 0; opacity: 0; }
    12%, 88% { opacity: 1; }
    100% { left: 100%; opacity: 0; }
  }
}

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .story-motion {
      animation: story-words linear both;
      animation-timeline: view();
      animation-range: entry 0% exit 100%;
    }

    .return-timeline::after {
      animation: reveal-return linear both;
      animation-timeline: view();
      animation-range: entry 10% cover 65%;
    }

    .tree-motion {
      animation: tree-shift linear both;
      animation-timeline: view();
      animation-range: entry 0% exit 100%;
    }

  }

  @keyframes story-words {
    from { translate: 0 -10%; }
    to { translate: 0 18%; }
  }

  @keyframes reveal-return {
    from { scale: 0 1; }
    to { scale: 1 1; }
  }

  @keyframes tree-shift {
    from { translate: 18% -8%; }
    to { translate: -12% 12%; }
  }

}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .promise-strip div:hover {
    z-index: 1;
    transform: translateY(-0.45rem) rotate(-1deg);
    box-shadow: 0 7px 0 var(--ink-fixed);
  }

  .record-list:hover {
    transform: translateY(-0.45rem) rotate(-4deg);
  }

  .record-context:hover {
    transform: translateY(-0.45rem) rotate(3deg);
  }

  .system-node:hover {
    transform: translateY(-0.45rem) rotate(1deg);
    box-shadow: 10px 12px 0 var(--ink-fixed);
  }

  .sync-route span:hover,
  .tree-notes article:hover {
    transform: translateY(-0.3rem);
  }

  .tree-row:hover {
    transform: translateX(0.35rem);
  }
}

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