:root {
  --ink: #0e0e0e;
  --ink-2: #3a3a3a;
  --ink-3: #77736d;
  --paper: #f5f3ef;
  --paper-2: #eeece8;
  --paper-3: #e8e5e0;
  --accent: #c8a96e;
  --accent-deep: #6c552b;
  --accent-soft: rgba(200, 169, 110, 0.16);
  --line: rgba(14, 14, 14, 0.11);
  --line-strong: rgba(14, 14, 14, 0.24);
  --danger: #8f2d25;
  --focus: #9a7332;
  --font-display: "DM Serif Display", Georgia, serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --max-width: 1200px;
  --cell: 15px;
  --gap: 3px;
  color-scheme: light;
}

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

html {
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(90deg, var(--accent-soft) 0, var(--accent-soft) 1px, transparent 1px),
    var(--paper);
  background-size: 25% 100%, auto;
  color: var(--ink);
  font-weight: 300;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration-color: rgba(14, 14, 14, 0.35);
  text-underline-offset: 4px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--accent-deep);
  text-decoration-color: var(--accent);
}

button,
.button,
input,
select,
textarea {
  font: inherit;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.75rem, 6vw, 5.25rem);
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--ink-2);
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

code {
  font-size: 0.9em;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 max(2rem, calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(245, 243, 239, 0.92);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.32rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
}

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

.brand-mark {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: var(--paper-2);
}

.brand-mark img {
  width: 20px;
  height: 20px;
}

.mobile-nav-toggle {
  display: none;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.25rem);
}

.site-header nav form {
  margin: 0;
}

.site-header nav > a,
.link-button {
  position: relative;
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.site-header nav > a::after,
.link-button::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -3px;
  left: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-header nav > a:hover,
.link-button:hover {
  color: var(--ink);
}

.site-header nav > a:hover::after,
.link-button:hover::after {
  transform: scaleX(1);
}

.page-shell {
  width: min(100%, calc(var(--max-width) + 4rem));
  flex: 1;
  margin: 0 auto;
  padding: clamp(3.5rem, 7vw, 6.5rem) 2rem 7rem;
}

.page-heading {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.page-heading::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 1px;
  background: var(--accent);
}

.page-heading h1 {
  margin: 0;
}

.page-heading p {
  margin: 0.65rem 0 0;
  color: var(--ink-3);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

button,
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: transparent;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: 0.015em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition:
    color 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

button:hover,
.button:hover {
  border-color: var(--accent);
  color: var(--ink);
  transform: translateY(-2px);
}

button:focus-visible,
.button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(200, 169, 110, 0.68);
  outline-offset: 3px;
}

.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.primary:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(14, 14, 14, 0.1);
}

.danger {
  border-color: rgba(143, 45, 37, 0.52);
  color: var(--danger);
}

.danger:hover {
  border-color: var(--danger);
  background: var(--danger);
  color: #fff;
}

button:disabled,
.disabled {
  opacity: 0.38;
  cursor: not-allowed;
  transform: none;
}

.messages {
  margin: 0 0 1.5rem;
}

.message {
  margin: 0;
  padding: 0.95rem 1.15rem;
  border: 1px solid rgba(200, 169, 110, 0.55);
  border-left: 4px solid var(--accent);
  border-radius: 2px;
  background: var(--accent-soft);
}

.message.error {
  border-color: rgba(143, 45, 37, 0.45);
  border-left-color: var(--danger);
  background: rgba(143, 45, 37, 0.08);
}

.habit-list {
  display: grid;
  gap: 1.5rem;
}

.habit-card,
.panel,
.narrow-card,
.empty-state {
  border: 1px solid rgba(14, 14, 14, 0.08);
  border-radius: 6px;
  background: rgba(238, 236, 232, 0.93);
  box-shadow: 0 8px 28px rgba(14, 14, 14, 0.035);
}

.habit-card {
  min-width: 0;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.panel,
.narrow-card,
.empty-state {
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.habit-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 0.75rem;
}

.habit-header h2 {
  margin: 0;
}

.habit-header p {
  max-width: 42rem;
  margin: 0.55rem 0 0;
  color: var(--ink-3);
  font-size: 0.925rem;
}

.year-nav {
  display: grid;
  grid-template-columns: 44px 72px 44px;
  align-items: stretch;
  gap: 0.55rem;
  color: var(--ink-2);
  white-space: nowrap;
}

.year-nav strong {
  width: 72px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(245, 243, 239, 0.58);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1;
  text-align: center;
}

.icon-button {
  width: 44px;
  height: 44px;
  min-height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(245, 243, 239, 0.58);
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1;
  text-decoration: none;
}

.heatmap-scroll {
  --heatmap-inline-padding: 0.25rem;
  --label-gap: 6px;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  margin: 1.25rem 0 0.75rem;
  padding: 1rem var(--heatmap-inline-padding) 1.15rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-color: var(--accent) transparent;
  scrollbar-width: thin;
}

.heatmap-wrap {
  min-width: calc(44px + var(--weeks) * (var(--cell) + var(--gap)));
  display: grid;
  grid-template-columns: 38px auto;
  grid-template-rows: 24px auto;
  column-gap: var(--label-gap);
}

.month-labels {
  grid-column: 2;
  height: 24px;
  display: grid;
  grid-template-columns: repeat(var(--weeks), calc(var(--cell) + var(--gap)));
  color: var(--ink-3);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.month-labels span {
  white-space: nowrap;
}

.weekday-labels {
  --weekday-surface: var(--paper);
  position: sticky;
  left: 0;
  z-index: 2;
  grid-column: 1;
  grid-row: 2;
  display: grid;
  grid-template-rows: repeat(7, var(--cell));
  align-items: center;
  gap: var(--gap);
  color: var(--ink-3);
  font-size: 0.61rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--weekday-surface);
  isolation: isolate;
}

.weekday-labels::after {
  content: "";
  position: absolute;
  top: 0;
  right: calc(-1 * var(--label-gap));
  bottom: 0;
  width: var(--label-gap);
  background: var(--weekday-surface);
  pointer-events: none;
}

.weekday-labels::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(-1 * var(--heatmap-inline-padding));
  width: var(--heatmap-inline-padding);
  background: var(--weekday-surface);
  pointer-events: none;
}

.habit-card .weekday-labels {
  --weekday-surface: var(--paper-2);
}

.demo-habit-card .weekday-labels {
  --weekday-surface: var(--paper);
}

.heatmap-grid {
  grid-column: 2;
  grid-row: 2;
  display: flex;
  gap: var(--gap);
}

.heatmap-scroll-tail {
  display: none;
}

.heatmap-week {
  display: grid;
  grid-template-rows: repeat(7, var(--cell));
  gap: var(--gap);
}

.day-cell {
  width: var(--cell);
  height: var(--cell);
  min-height: 0;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(14, 14, 14, 0.19);
  border-radius: 2px;
  background: rgba(245, 243, 239, 0.82);
  color: var(--ink);
  font-size: 9px;
  line-height: 1;
  transform: none;
}

.day-cell:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: none;
}

.day-cell.completed {
  border-color: #9e7a3d;
  background: var(--accent);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

.day-cell.unavailable {
  border-color: rgba(14, 14, 14, 0.08);
  background: rgba(14, 14, 14, 0.055);
  opacity: 0.5;
}

.day-cell.before-start {
  border-color: rgba(14, 14, 14, 0.22);
  border-style: dotted;
  background: rgba(245, 243, 239, 0.45);
  opacity: 0.72;
}

.day-cell.completed.before-start,
.day-cell.completed.unavailable {
  border-color: #9e7a3d;
  border-style: solid;
  background: var(--accent);
  color: var(--ink);
  opacity: 1;
}

.day-cell.spacer {
  border-color: transparent;
  background: transparent;
}

.day-cell.selected {
  outline: 3px solid rgba(200, 169, 110, 0.78);
  outline-offset: 2px;
}

.day-cell.pending-complete {
  border: 2px dashed var(--paper);
  background: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-deep);
}

.day-cell.pending-incomplete {
  border: 2px dashed var(--danger);
  background: var(--paper);
  box-shadow: 0 0 0 1px rgba(143, 45, 37, 0.45);
}

.habit-card.editing {
  --cell: 28px;
  --gap: 5px;
  border-color: rgba(200, 169, 110, 0.62);
  box-shadow: 0 16px 40px rgba(14, 14, 14, 0.07);
}

.habit-card.editing .day-cell:not(:disabled) {
  width: 28px;
  height: 28px;
  font-size: 0.68rem;
  font-weight: 500;
}

.habit-card.editing .day-cell.before-start {
  opacity: 1;
}

.habit-card.editing .day-cell.selected {
  position: relative;
  z-index: 1;
  border: 2px solid var(--paper);
  background: var(--ink);
  color: var(--paper);
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 5px var(--ink);
}

.habit-card.editing .day-cell span {
  font-variant-numeric: tabular-nums;
}

.bulk-selected-dates {
  display: block;
  margin-top: 0.25rem;
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  text-transform: none;
}

.habit-stats {
  margin: 0.8rem 0 0;
  color: var(--ink-3);
  font-size: 0.82rem;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.habit-stats strong {
  color: var(--accent-deep);
  font-weight: 500;
}

.day-info {
  min-height: 1.5rem;
  margin: 0.55rem 0 1rem;
  color: var(--ink-3);
  font-size: 0.875rem;
}

.habit-actions,
.bulk-actions,
.form-actions,
.secondary-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.habit-actions form {
  margin: 0;
}

.bulk-toolbar {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.bulk-help {
  max-width: 58rem;
  margin: 0 0 0.8rem;
  color: var(--ink-2);
  font-size: 0.9rem;
}

.bulk-status {
  margin-bottom: 0.85rem;
  color: var(--accent-deep);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bulk-actions + .bulk-actions {
  margin-top: 0.8rem;
}

.bulk-actions label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--ink-3);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bulk-actions input {
  width: auto;
}

.range-actions {
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.form-error {
  color: var(--danger);
  font-weight: 500;
}

.secondary-links {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 0.85rem;
}

.narrow-card {
  max-width: 46rem;
  margin: 0 auto;
}

.narrow-card h1 {
  font-size: clamp(2.4rem, 6vw, 4.25rem);
  margin-bottom: 1rem;
}

.narrow-card form + form {
  margin-top: 1rem;
}

.stacked-form {
  display: grid;
  gap: 1.15rem;
}

.stacked-form > div {
  display: grid;
  gap: 0.4rem;
}

.stacked-form label {
  color: var(--ink-2);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.stacked-form input,
.stacked-form select,
.stacked-form textarea,
.bulk-actions input {
  width: 100%;
  padding: 0.75rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: rgba(245, 243, 239, 0.82);
  color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.stacked-form input:focus,
.stacked-form select:focus,
.stacked-form textarea:focus,
.bulk-actions input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.stacked-form input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--ink);
}

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

.errorlist {
  margin: 0.2rem 0;
  padding-left: 1.25rem;
  color: var(--danger);
}

.simple-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.simple-list article {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.simple-list h2 {
  margin: 0;
  font-size: 1.45rem;
}

.simple-list p {
  margin: 0.35rem 0 0;
  color: var(--ink-3);
  font-size: 0.875rem;
}

.tag {
  padding: 0.3rem 0.65rem;
  border: 1px solid rgba(200, 169, 110, 0.46);
  border-radius: 2px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.secret-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
  padding: 1rem;
  border: 1px solid rgba(200, 169, 110, 0.45);
  border-left: 4px solid var(--accent);
  border-radius: 2px;
  background: var(--accent-soft);
  overflow-wrap: anywhere;
}

.secret-box code {
  flex: 1;
  word-break: break-all;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(16rem, 0.7fr);
  gap: 1rem;
}

.panel h2 {
  margin-bottom: 0.75rem;
}

.import-summary {
  margin-top: 1rem;
}

.import-summary dl {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.55rem;
}

.import-summary dl div {
  padding: 0.85rem;
  border: 1px solid var(--line);
  background: rgba(245, 243, 239, 0.48);
}

.import-summary dt {
  color: var(--ink-3);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.import-summary dd {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.6rem;
}

.empty-state {
  padding-block: clamp(3.5rem, 8vw, 6rem);
  text-align: center;
}

.empty-state h2 {
  margin-bottom: 0.65rem;
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.empty-state p {
  max-width: 36rem;
  margin: 0 auto 1.35rem;
}

hr {
  margin: 1.75rem 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.docs h2 {
  margin-top: 2rem;
}

.docs pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(14, 14, 14, 0.055);
  white-space: pre-wrap;
  word-break: break-word;
}

.integration-stack {
  display: grid;
  gap: 1.25rem;
}

.integration-section {
  min-width: 0;
}

.integration-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.integration-heading h2,
.integration-section > h2 {
  margin-bottom: 0.65rem;
}

.eyebrow,
.field-label {
  margin: 0 0 0.55rem;
  color: var(--accent-deep);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.integration-status {
  flex: 0 0 auto;
  margin-top: 0.15rem;
}

.integration-status-active {
  border-color: rgba(108, 85, 43, 0.48);
  background: rgba(200, 169, 110, 0.24);
}

.integration-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 1.25rem 0;
  padding: 1px;
  background: var(--line);
}

.integration-meta div {
  min-width: 0;
  padding: 0.8rem;
  background: var(--paper);
}

.integration-meta dt {
  margin-bottom: 0.2rem;
  color: var(--ink-3);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.integration-meta dd {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.one-time-secret {
  margin: 1.5rem 0;
  padding: 1.25rem;
  border: 1px solid rgba(200, 169, 110, 0.48);
  border-left: 5px solid var(--accent);
  border-radius: 3px;
  background: var(--accent-soft);
}

.one-time-secret h3 {
  margin-bottom: 0.35rem;
}

.one-time-secret p {
  margin-top: 0;
}

.shortcut-template-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.15rem;
  margin: 1.5rem 0 0.55rem;
  padding: 1.15rem;
  border: 1px solid rgba(200, 169, 110, 0.5);
  border-radius: 4px;
  background: linear-gradient(135deg, rgba(200, 169, 110, 0.2), rgba(245, 243, 239, 0.72));
}

.shortcut-template-mark {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(14, 14, 14, 0.14);
  border-radius: 17px;
  background: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35), 0 8px 20px rgba(14, 14, 14, 0.08);
}

.shortcut-template-mark img {
  width: 42px;
  height: 42px;
}

.shortcut-template-copy {
  min-width: 0;
}

.shortcut-template-copy .eyebrow,
.shortcut-template-copy h3,
.shortcut-template-copy p {
  margin-top: 0;
}

.shortcut-template-copy h3 {
  margin-bottom: 0.3rem;
}

.shortcut-template-copy p:last-child {
  margin-bottom: 0;
}

.shortcut-template-download {
  white-space: nowrap;
}

.masked-secret {
  opacity: 0.78;
}

.integration-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.integration-actions form {
  margin: 0;
}

.token-actions {
  margin: 1.25rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.test-result {
  flex: 1 1 18rem;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.875rem;
}

.test-result.error {
  color: var(--danger);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.guide-grid.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.setup-guide,
.guide-grid.three-up > div {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(245, 243, 239, 0.54);
}

.setup-guide h3,
.guide-grid.three-up h3 {
  margin-bottom: 0.65rem;
}

.setup-guide ol {
  margin: 0;
  padding-left: 1.3rem;
}

.setup-guide li + li {
  margin-top: 0.45rem;
}

.notice {
  padding: 0.8rem 0.9rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--ink-2);
  font-size: 0.875rem;
}

.endpoint-list {
  display: grid;
  gap: 0.55rem;
  padding-left: 1.25rem;
}

.endpoint-list code {
  overflow-wrap: anywhere;
}

.integration-section pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(14, 14, 14, 0.055);
  white-space: pre-wrap;
  word-break: break-word;
}

.integration-callout h2 {
  margin-bottom: 0.45rem;
  font-size: 1.7rem;
}

.site-header nav > a.nav-cta {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: var(--ink);
  color: var(--paper);
}

.site-header nav > a.nav-cta::after {
  display: none;
}

.site-header nav > a.nav-cta:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--ink);
}

.landing-page {
  display: grid;
  gap: clamp(4.5rem, 9vw, 8.5rem);
}

.landing-hero {
  min-height: min(680px, calc(100vh - 160px));
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  gap: clamp(3rem, 8vw, 7rem);
}

.landing-hero h1 {
  max-width: 12ch;
  margin-bottom: 1.35rem;
  font-size: clamp(4rem, 7.5vw, 7rem);
  line-height: 0.96;
}

.landing-lede {
  max-width: 42rem;
  margin: 0;
  color: var(--ink-2);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.6;
}

.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.landing-assurance {
  margin: 0.8rem 0 0;
  color: var(--ink-3);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.hero-preview {
  min-width: 0;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: rgba(245, 243, 239, 0.76);
  box-shadow: 18px 18px 0 var(--accent-soft);
}

.hero-preview-heading,
.hero-preview-foot {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.hero-preview-heading strong,
.hero-preview-foot strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
  line-height: 1.2;
}

.hero-preview-heading .eyebrow {
  margin-bottom: 0.25rem;
}

.hero-mini-grid {
  display: flex;
  gap: 4px;
  overflow: hidden;
  margin: 2rem 0;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-mini-week {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  gap: 4px;
}

.hero-mini-week i {
  width: 12px;
  height: 12px;
  border: 1px solid var(--line);
  border-radius: 1px;
  background: rgba(245, 243, 239, 0.8);
}

.hero-mini-week i.completed {
  border-color: #9e7a3d;
  background: var(--accent);
}

.hero-preview-foot {
  align-items: flex-end;
}

.hero-preview-foot span {
  max-width: 15rem;
  color: var(--ink-3);
  font-size: 0.75rem;
  line-height: 1.5;
  text-align: right;
}

.landing-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.landing-strip > div {
  min-width: 0;
  display: grid;
  gap: 0.2rem;
  padding: 1.35rem 1.5rem;
}

.landing-strip > div + div {
  border-left: 1px solid var(--line);
}

.landing-strip strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
}

.landing-strip span {
  color: var(--ink-3);
  font-size: 0.78rem;
}

.landing-section {
  scroll-margin-top: 90px;
}

.landing-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 6rem);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line-strong);
}

.landing-section-heading h2 {
  max-width: 16ch;
  margin: 0;
  font-size: clamp(2.35rem, 5vw, 4.25rem);
}

.landing-section-heading > p {
  margin: 0;
  color: var(--ink-3);
}

.demo-habit-list {
  display: grid;
  gap: 1.25rem;
}

.demo-habit-card {
  min-width: 0;
  padding: clamp(1.1rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(245, 243, 239, 0.62);
}

.demo-habit-header,
.demo-habit-foot {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.demo-habit-header h3 {
  margin-bottom: 0.25rem;
  font-size: clamp(1.55rem, 3vw, 2.1rem);
}

.demo-habit-header p {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.85rem;
}

.demo-year {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.demo-heatmap-scroll {
  margin-top: 1.4rem;
}

.demo-day:not(:disabled) {
  cursor: pointer;
}

.demo-habit-foot {
  align-items: center;
  color: var(--ink-3);
  font-size: 0.76rem;
  letter-spacing: 0.025em;
}

.demo-habit-foot strong {
  color: var(--accent-deep);
  font-weight: 500;
}

.demo-status {
  text-align: right;
}

.demo-conversion {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 1.5rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid rgba(200, 169, 110, 0.55);
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
}

.demo-conversion[hidden] {
  display: none;
}

.demo-conversion h3 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.demo-conversion .eyebrow {
  margin-bottom: 0.25rem;
}

.landing-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.landing-feature-grid article {
  min-width: 0;
  padding: 1.75rem 1.5rem;
  border-bottom: 1px solid var(--line);
}

.landing-feature-grid article + article {
  border-left: 1px solid var(--line);
}

.feature-number {
  display: block;
  margin-bottom: 2.5rem;
  color: var(--accent-deep);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.landing-feature-grid h3 {
  margin-bottom: 0.55rem;
  font-size: 1.55rem;
}

.landing-feature-grid p {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.88rem;
}

.automation-showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  align-items: center;
  gap: clamp(3rem, 8vw, 7rem);
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--line-strong);
  background: rgba(245, 243, 239, 0.64);
}

.automation-showcase h2 {
  max-width: 13ch;
  margin-bottom: 1rem;
  font-size: clamp(2.3rem, 4vw, 3.7rem);
}

.automation-showcase p:not(.eyebrow) {
  color: var(--ink-3);
}

.text-link {
  color: var(--accent-deep);
  font-size: 0.88rem;
  font-weight: 500;
}

.automation-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.automation-flow span {
  min-height: 70px;
  flex: 1 1 0;
  display: grid;
  place-items: center;
  padding: 0.85rem;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  font-family: var(--font-display);
  line-height: 1.25;
  text-align: center;
}

.automation-flow i {
  color: var(--accent-deep);
  font-style: normal;
}

.landing-final-cta {
  display: grid;
  justify-items: center;
  padding: clamp(3rem, 8vw, 6rem) 1rem;
  border-top: 1px solid var(--line-strong);
  text-align: center;
}

.landing-final-cta h2 {
  max-width: 14ch;
  margin-bottom: 0;
  font-size: clamp(2.6rem, 6vw, 5rem);
}

footer {
  border-top: 1px solid var(--line);
  background: rgba(245, 243, 239, 0.84);
}

.footer-inner {
  width: min(100%, calc(var(--max-width) + 4rem));
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 0 auto;
  padding: 1.5rem 2rem;
}

.footer-mark {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
}

.footer-copy {
  display: grid;
  gap: 0.2rem;
  justify-items: end;
  text-align: right;
}

.footer-copy p {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.footer-copy a {
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.025em;
}

@media (max-width: 760px) {
  body {
    background-size: 50% 100%, auto;
  }

  .site-header {
    position: sticky;
    align-items: center;
    flex-direction: row;
    gap: 0.75rem;
    padding: 0 1rem;
  }

  .brand {
    min-width: 0;
    gap: 0.55rem;
    font-size: 1.24rem;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }

  .brand-mark img {
    width: 19px;
    height: 19px;
  }

  .mobile-nav-toggle {
    min-width: 84px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    margin-left: auto;
    padding: 0.55rem 0.6rem;
    border: 1px solid var(--line-strong);
    border-radius: 2px;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.04em;
  }

  .mobile-nav-toggle:focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 3px;
  }

  .mobile-nav-toggle-icon {
    position: relative;
    width: 18px;
    height: 12px;
    display: block;
  }

  .mobile-nav-toggle-icon i {
    position: absolute;
    left: 0;
    width: 18px;
    height: 1px;
    display: block;
    background: currentColor;
    transition: top 0.2s ease, transform 0.2s ease;
  }

  .mobile-nav-toggle-icon i:first-child {
    top: 2px;
  }

  .mobile-nav-toggle-icon i:last-child {
    top: 9px;
  }

  .mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle-icon i:first-child {
    top: 5px;
    transform: rotate(45deg);
  }

  .mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle-icon i:last-child {
    top: 5px;
    transform: rotate(-45deg);
  }

  .site-header nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    max-height: calc(100vh - 64px);
    width: 100%;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    overflow-y: auto;
    padding: 0.45rem 1rem 1rem;
    border-bottom: 1px solid var(--line-strong);
    background: rgba(245, 243, 239, 0.98);
    box-shadow: 0 12px 24px rgba(14, 14, 14, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .site-header nav.is-open {
    display: flex;
  }

  .site-header nav > a,
  .site-header nav form,
  .site-header nav form .link-button {
    width: 100%;
  }

  .site-header nav > a,
  .site-header nav form .link-button {
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.95rem;
    text-align: left;
  }

  .site-header nav > a::after,
  .site-header nav form .link-button::after {
    display: none;
  }

  .site-header nav > a.nav-cta {
    min-height: 48px;
    justify-content: center;
    margin: 0.75rem 0 0.35rem;
    padding: 0.65rem 0.8rem;
    border-bottom-color: var(--ink);
  }

  .page-shell {
    padding: 2.5rem 1rem 4rem;
  }

  .landing-page {
    gap: 4.5rem;
  }

  .landing-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .landing-hero h1 {
    font-size: clamp(3.3rem, 16vw, 5.25rem);
  }

  .hero-preview {
    box-shadow: 10px 10px 0 var(--accent-soft);
  }

  .hero-preview-foot {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-preview-foot span {
    text-align: left;
  }

  .landing-strip,
  .landing-section-heading,
  .landing-feature-grid,
  .automation-showcase {
    grid-template-columns: 1fr;
  }

  .landing-strip > div + div,
  .landing-feature-grid article + article {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .landing-section-heading {
    align-items: start;
    gap: 1rem;
  }

  .landing-section-heading > p {
    max-width: 34rem;
  }

  .demo-habit-card {
    padding: 1.1rem 0.8rem;
  }

  .demo-habit-header,
  .demo-habit-foot {
    align-items: flex-start;
  }

  .demo-habit-foot {
    flex-direction: column;
    gap: 0.25rem;
  }

  .demo-status {
    text-align: left;
  }

  .demo-conversion {
    align-items: stretch;
    flex-direction: column;
  }

  .demo-conversion .button {
    width: 100%;
  }

  .feature-number {
    margin-bottom: 1.5rem;
  }

  .automation-showcase {
    gap: 2.5rem;
    padding: 1.5rem 1rem;
  }

  .automation-flow {
    align-items: stretch;
    flex-direction: column;
  }

  .automation-flow span {
    width: 100%;
    min-height: 58px;
  }

  .automation-flow i {
    text-align: center;
    transform: rotate(90deg);
  }

  .landing-final-cta .landing-actions {
    width: 100%;
    flex-direction: column;
  }

  .landing-final-cta .button {
    width: 100%;
  }

  .page-heading,
  .habit-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-heading h1 {
    font-size: clamp(2.6rem, 14vw, 4.25rem);
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .integration-heading {
    flex-direction: column;
  }

  .integration-meta,
  .guide-grid,
  .guide-grid.three-up {
    grid-template-columns: 1fr;
  }

  .shortcut-template-card {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .shortcut-template-download {
    grid-column: 1 / -1;
    width: 100%;
  }

  .habit-card {
    padding: 1.1rem 0.8rem;
  }

  .heatmap-scroll {
    scroll-padding-left: calc(var(--heatmap-inline-padding) + 38px + var(--label-gap));
    scroll-snap-type: x mandatory;
  }

  .heatmap-week {
    scroll-snap-align: start;
  }

  .heatmap-scroll[data-current-month] .heatmap-scroll-tail.is-needed {
    display: block;
    flex: 0 0 0;
    height: 1px;
  }

  .habit-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    gap: 0.65rem;
  }

  .habit-actions > *,
  .habit-actions form button {
    width: 100%;
    min-width: 0;
    height: 50px;
  }

  .habit-actions > button,
  .habit-actions > .button,
  .habit-actions form button {
    padding: 0.65rem 0.5rem;
    font-size: 0.92rem;
  }

  .secret-box,
  .simple-list article,
  .footer-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .simple-list article {
    align-items: flex-start;
  }

  .footer-inner {
    min-height: auto;
  }

  .footer-copy {
    justify-items: start;
    text-align: left;
  }
}

@media (prefers-contrast: more) {
  :root {
    --line: rgba(14, 14, 14, 0.45);
    --line-strong: rgba(14, 14, 14, 0.8);
    --ink-3: #3a3a3a;
  }

  .day-cell {
    border-width: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}