:root {
  color-scheme: light dark;
  --background: #f7f4ef;
  --raised-surface: #fffdfa;
  --subtle-surface: #efebe5;
  --primary-text: #23201e;
  --secondary-text: #6f6863;
  --border: #dcd5ce;
  --border-strong: #c9c0b7;
  --accent: #bd493c;
  --accent-hover: #98372e;
  --accent-soft: #f4ded9;
  --on-accent: #fffaf7;
  --calendar-coral: #b94b40;
  --calendar-blue: #4f709d;
  --calendar-green: #52755e;
  --focus-ring: #316bd6;
  --max-content-width: 1180px;
  --legal-content-width: 760px;
  --header-height: 68px;
  --shadow-soft: 0 22px 70px rgba(54, 43, 35, 0.09);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #171615;
    --raised-surface: #211f1d;
    --subtle-surface: #292622;
    --primary-text: #f2eee9;
    --secondary-text: #aaa29b;
    --border: #3a3632;
    --border-strong: #514a44;
    --accent: #e47767;
    --accent-hover: #f18c7e;
    --accent-soft: #422a26;
    --on-accent: #24110d;
    --calendar-coral: #e27d6e;
    --calendar-blue: #84a2cc;
    --calendar-green: #87aa92;
    --focus-ring: #8cb4ff;
    --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.27);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--primary-text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

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

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-150%);
  padding: 10px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--raised-surface);
  color: var(--primary-text);
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease;
}

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

.section-shell,
.nav-shell {
  width: min(calc(100% - 40px), var(--max-content-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  min-height: var(--header-height);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  background: color-mix(in srgb, var(--background) 93%, transparent);
  backdrop-filter: blur(14px);
}

.nav-shell {
  position: relative;
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--primary-text);
  font-size: 1.15rem;
  font-weight: 750;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.wordmark:hover {
  color: var(--primary-text);
}

.wordmark img {
  flex: 0 0 auto;
  border-radius: 7px;
}

.primary-nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(18px, 2.4vw, 31px);
}

.primary-nav a {
  color: var(--secondary-text);
  font-size: 0.875rem;
  font-weight: 650;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--primary-text);
}

.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--raised-surface);
  color: var(--primary-text);
  cursor: pointer;
}

.nav-toggle-label {
  font-size: 0.82rem;
  font-weight: 700;
}

.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
}

.nav-toggle-lines {
  position: relative;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  position: absolute;
  content: "";
}

.nav-toggle-lines::before { transform: translateY(-5px); }
.nav-toggle-lines::after { transform: translateY(5px); }

.hero {
  display: grid;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 0.84fr) minmax(540px, 1.16fr);
  align-items: center;
  gap: clamp(48px, 6vw, 88px);
  padding-block: clamp(76px, 9vw, 132px);
}

.hero-copy {
  max-width: 570px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
  vertical-align: 1px;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-weight: 720;
  letter-spacing: -0.038em;
  line-height: 1.08;
}

h1 {
  max-width: 12ch;
  margin-bottom: 25px;
  font-size: clamp(3rem, 5.5vw, 5.25rem);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2.25rem, 4.2vw, 3.9rem);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
  letter-spacing: -0.022em;
}

.hero-lede,
.section-intro > p:last-child,
.section-lede,
.prose-column > p,
.open-source-inner > div > p:last-child {
  color: var(--secondary-text);
  font-size: 1.075rem;
}

.hero-lede {
  max-width: 54ch;
  margin: 0 0 30px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  color: var(--on-accent);
}

.button-primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
}

.button-secondary {
  border-color: var(--border-strong);
  background: var(--raised-surface);
  color: var(--primary-text);
}

.button-secondary:hover {
  border-color: var(--primary-text);
  color: var(--primary-text);
}

.microcopy {
  margin: 13px 0 0;
  color: var(--secondary-text);
  font-size: 0.8rem;
}

.product-preview {
  min-width: 0;
}

.preview-window {
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: var(--raised-surface);
  box-shadow: var(--shadow-soft);
  transform: rotate(0.25deg);
}

.preview-topbar {
  display: flex;
  height: 42px;
  align-items: center;
  justify-content: space-between;
  padding-inline: 14px;
  border-bottom: 1px solid var(--border);
  background: var(--subtle-surface);
}

.preview-mark {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 800;
}

.preview-mark img { border-radius: 4px; }

.window-dots {
  display: flex;
  gap: 5px;
}

.window-dots i {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border-strong);
}

.preview-layout {
  display: grid;
  min-height: 436px;
  grid-template-columns: 148px 1fr;
}

.preview-sidebar {
  padding: 21px 13px;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--subtle-surface) 70%, var(--raised-surface));
  color: var(--secondary-text);
  font-size: 0.67rem;
}

.preview-nav-item {
  display: flex;
  height: 31px;
  align-items: center;
  gap: 8px;
  padding-inline: 9px;
  border-radius: 5px;
}

.preview-nav-item span { width: 11px; text-align: center; }
.preview-nav-item b { margin-left: auto; font-size: 0.6rem; }
.preview-nav-item.is-active { background: var(--accent-soft); color: var(--primary-text); font-weight: 750; }
.preview-sidebar-rule { margin: 15px 7px; border-top: 1px solid var(--border); }
.preview-sidebar p { margin: 0 8px 7px; font-size: 0.59rem; font-weight: 750; letter-spacing: 0.08em; text-transform: uppercase; }

.preview-project {
  display: flex;
  height: 27px;
  align-items: center;
  gap: 7px;
  padding-inline: 9px;
}

.project-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.project-dot.coral { background: var(--calendar-coral); }
.project-dot.blue { background: var(--calendar-blue); }

.preview-main {
  min-width: 0;
  padding: 30px 28px;
}

.preview-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 25px;
}

.preview-heading small {
  color: var(--secondary-text);
  font-size: 0.59rem;
  font-weight: 600;
}

.preview-heading h2 {
  margin: 1px 0 0;
  font-size: 1.45rem;
  letter-spacing: -0.04em;
}

.preview-heading h2 span {
  color: var(--secondary-text);
  font-size: 0.71rem;
  font-weight: 550;
  letter-spacing: 0;
}

.preview-heading button {
  min-height: 31px;
  padding: 5px 10px;
  border: 0;
  border-radius: 5px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 0.63rem;
  font-weight: 750;
}

.calendar-strip {
  position: relative;
  display: grid;
  min-height: 52px;
  grid-template-columns: 40px 1fr 16px;
  align-items: center;
  gap: 10px;
  margin-bottom: 21px;
  padding: 8px 12px 8px 16px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--calendar-blue) 35%, var(--border));
  border-radius: 6px;
  background: color-mix(in srgb, var(--calendar-blue) 10%, var(--raised-surface));
}

.calendar-bar {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--calendar-blue);
}

.calendar-time { color: var(--calendar-blue); font-size: 0.61rem; font-weight: 750; }
.calendar-strip strong { display: block; color: var(--primary-text); font-size: 0.67rem; line-height: 1.25; }
.calendar-strip small { display: block; margin-top: 2px; color: var(--secondary-text); font-size: 0.56rem; line-height: 1.2; }
.external-arrow { color: var(--secondary-text); font-size: 0.72rem; }

.preview-section-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 4px;
  color: var(--secondary-text);
  font-size: 0.59rem;
  font-weight: 750;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.task-row {
  display: grid;
  min-height: 57px;
  grid-template-columns: 17px 1fr auto;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.task-circle {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--border-strong);
  border-radius: 50%;
}

.task-circle.p1 { border-color: var(--calendar-coral); }
.task-circle.p2 { border-color: #db9a43; }
.task-row strong { display: block; font-size: 0.67rem; font-weight: 680; line-height: 1.25; }
.task-row small { display: block; margin-top: 3px; color: var(--secondary-text); font-size: 0.54rem; line-height: 1.2; }
.task-row time { color: var(--secondary-text); font-size: 0.56rem; }
.task-row-muted { opacity: 0.68; }
.coral-text { color: var(--calendar-coral); }
.blue-text { color: var(--calendar-blue); }

.preview-caption {
  margin: 13px 5px 0;
  color: var(--secondary-text);
  font-size: 0.73rem;
  text-align: right;
}

.section-block {
  padding-block: clamp(88px, 10vw, 148px);
}

.section-intro {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-intro h2 { max-width: 16ch; }
.section-intro > p:last-child { max-width: 62ch; margin-bottom: 0; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.feature-card {
  min-height: 230px;
  padding: 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--raised-surface) 55%, transparent);
}

.feature-card:nth-child(2),
.feature-card:nth-child(4),
.feature-card:nth-child(5),
.feature-card:nth-child(7) {
  background: color-mix(in srgb, var(--subtle-surface) 46%, transparent);
}

.feature-icon {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 42px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--raised-surface);
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 800;
}

.feature-card p {
  margin: 0;
  color: var(--secondary-text);
  font-size: 0.88rem;
}

.local-first,
.open-source {
  border-block: 1px solid var(--border);
  background: var(--subtle-surface);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(60px, 10vw, 150px);
}

.split-section h2 { max-width: 10ch; }
.prose-column > p { margin-top: 0; }

.technical-note {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 13px;
  margin-top: 32px;
  padding: 20px;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  background: color-mix(in srgb, var(--raised-surface) 72%, transparent);
}

.technical-note > span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
}

.technical-note p { margin: 0; color: var(--secondary-text); font-size: 0.87rem; }
.technical-note strong { color: var(--primary-text); }

.calendar-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 0.85fr);
  align-items: center;
  gap: clamp(60px, 10vw, 146px);
}

.calendar-copy h2 { max-width: 10ch; }
.section-lede { max-width: 55ch; margin: 0 0 32px; }

.check-list {
  display: grid;
  gap: 17px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 11px;
  color: var(--secondary-text);
  font-size: 0.91rem;
}

.check-list li > span:first-child {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 900;
}

.check-list strong { color: var(--primary-text); }

.text-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 32px;
}

.text-links a {
  color: var(--primary-text);
  font-size: 0.84rem;
  font-weight: 750;
  text-decoration: none;
}

.text-links a:hover { color: var(--accent-hover); }

.calendar-diagram {
  display: grid;
  grid-template-columns: 78px 1fr;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--raised-surface);
  box-shadow: var(--shadow-soft);
}

.diagram-date {
  padding: 28px 12px;
  border-right: 1px solid var(--border);
  background: var(--subtle-surface);
  text-align: center;
}

.diagram-date span { display: block; color: var(--secondary-text); font-size: 0.67rem; font-weight: 750; text-transform: uppercase; }
.diagram-date strong { display: block; margin-top: 2px; font-size: 1.65rem; letter-spacing: -0.05em; }
.diagram-flow { min-width: 0; padding: 26px 22px 32px; }
.diagram-label { margin: 0 0 10px; color: var(--calendar-blue); font-size: 0.64rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; }

.diagram-event {
  display: grid;
  grid-template-columns: 5px 1fr 16px;
  align-items: center;
  gap: 12px;
  padding: 13px;
  border: 1px solid color-mix(in srgb, var(--calendar-blue) 42%, var(--border));
  border-radius: 6px;
  background: color-mix(in srgb, var(--calendar-blue) 11%, var(--raised-surface));
}

.diagram-event > i { width: 4px; align-self: stretch; border-radius: 2px; background: var(--calendar-blue); }
.diagram-event strong { display: block; font-size: 0.77rem; line-height: 1.3; }
.diagram-event small { display: block; color: var(--secondary-text); font-size: 0.65rem; }
.diagram-event b { color: var(--secondary-text); font-size: 0.75rem; }

.diagram-divider {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-block: 24px 8px;
  color: var(--secondary-text);
}

.diagram-divider::before,
.diagram-divider::after { height: 1px; flex: 1; background: var(--border); content: ""; }
.diagram-divider em { font-size: 0.58rem; font-style: normal; font-weight: 750; letter-spacing: 0.06em; text-transform: uppercase; }

.diagram-task {
  display: grid;
  min-height: 47px;
  grid-template-columns: 15px 1fr auto;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.73rem;
}

.diagram-task i { width: 14px; height: 14px; border: 1.5px solid var(--border-strong); border-radius: 50%; }
.diagram-task small { color: var(--secondary-text); font-size: 0.62rem; }

.open-source-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1fr);
  gap: clamp(60px, 10vw, 145px);
}

.open-source-inner h2 { max-width: 11ch; }
.open-source-inner > div > p:last-child { max-width: 49ch; }

.resource-links {
  border-top: 1px solid var(--border-strong);
}

.resource-links a {
  display: flex;
  min-height: 80px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-inline: 4px;
  border-bottom: 1px solid var(--border-strong);
  text-decoration: none;
}

.resource-links a:hover { color: var(--accent-hover); }
.resource-links strong { display: block; font-size: 0.95rem; }
.resource-links small { display: block; margin-top: 2px; color: var(--secondary-text); font-size: 0.74rem; }
.resource-links b { font-size: 0.85rem; }

.site-footer {
  padding-block: 58px 28px;
  background: #24211f;
  color: #f4eee8;
}

@media (prefers-color-scheme: dark) {
  .site-footer { background: #0e0d0c; }
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
}

.footer-brand .wordmark { color: #fff9f5; }
.footer-brand p { margin: 12px 0 0; color: #aaa19a; font-size: 0.83rem; }
.footer-grid nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 24px; }
.footer-grid nav a { color: #d5cec7; font-size: 0.79rem; font-weight: 650; text-decoration: none; }
.footer-grid nav a:hover { color: #fff; }

.footer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-top: 45px;
  padding-top: 22px;
  border-top: 1px solid #48413d;
  color: #918984;
  font-size: 0.72rem;
}

.footer-meta p { margin: 0; }

/* Legal and support pages */
.page-hero {
  padding-block: clamp(70px, 9vw, 118px) 58px;
  border-bottom: 1px solid var(--border);
}

.page-hero .eyebrow { margin-bottom: 15px; }
.page-hero h1 { max-width: 15ch; margin-bottom: 20px; font-size: clamp(2.85rem, 5.6vw, 5rem); }
.page-hero > p:last-child { max-width: 62ch; margin: 0; color: var(--secondary-text); font-size: 1.08rem; }
.last-updated { display: inline-block; margin-top: 24px; color: var(--secondary-text); font-size: 0.8rem; font-weight: 650; }

.legal-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, var(--legal-content-width));
  justify-content: center;
  gap: clamp(54px, 8vw, 105px);
  padding-block: 64px 120px;
}

.table-of-contents {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  align-self: start;
}

.table-of-contents h2 {
  margin-bottom: 14px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.table-of-contents ol {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.table-of-contents a {
  display: block;
  color: var(--secondary-text);
  font-size: 0.76rem;
  line-height: 1.35;
  text-decoration: none;
}

.table-of-contents a:hover { color: var(--primary-text); }

.legal-content {
  min-width: 0;
}

.legal-content section {
  padding-block: 38px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.legal-content section:first-child { padding-top: 0; }
.legal-content section:last-child { border-bottom: 0; }

.legal-content h2 {
  margin-bottom: 16px;
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  letter-spacing: -0.025em;
}

.legal-content h3 {
  margin: 28px 0 10px;
  font-size: 1rem;
}

.legal-content p,
.legal-content li {
  color: var(--secondary-text);
  font-size: 0.95rem;
}

.legal-content p { margin: 0 0 16px; }
.legal-content p:last-child { margin-bottom: 0; }
.legal-content strong { color: var(--primary-text); }
.legal-content ul,
.legal-content ol { margin: 13px 0 18px; padding-left: 1.35rem; }
.legal-content li + li { margin-top: 7px; }
.legal-content a { color: var(--primary-text); font-weight: 650; overflow-wrap: anywhere; }
.legal-content a:hover { color: var(--accent-hover); }

.policy-disclosure {
  margin-block: 26px;
  padding: 22px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: var(--accent-soft);
}

.policy-disclosure p { color: var(--primary-text); font-weight: 650; }
.scope-list { display: grid; gap: 12px; margin-block: 22px; }
.scope-item { padding: 16px; border: 1px solid var(--border); border-radius: 6px; background: var(--raised-surface); }
.scope-item code { display: block; color: var(--primary-text); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.77rem; overflow-wrap: anywhere; }
.scope-item p { margin: 8px 0 0; font-size: 0.85rem; }
.legal-note { padding: 16px 18px; border: 1px solid var(--border); border-radius: 6px; background: var(--subtle-surface); }
.legal-note p { font-size: 0.84rem; }

.support-layout {
  padding-block: 70px 120px;
}

.support-intro-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 86px;
}

.support-card {
  display: flex;
  min-height: 170px;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--raised-surface);
  text-decoration: none;
}

.support-card:hover { border-color: var(--border-strong); color: var(--primary-text); }
.support-card h2 { margin: 0 0 9px; font-size: 1.15rem; }
.support-card p { margin: 0; color: var(--secondary-text); font-size: 0.84rem; }
.support-card > span { align-self: flex-end; color: var(--accent); font-weight: 800; }

.support-columns {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  align-items: start;
  gap: clamp(58px, 9vw, 120px);
}

.setup-panel {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--subtle-surface);
}

.setup-panel h2 { margin-bottom: 16px; font-size: 1.55rem; }
.setup-panel p,
.setup-panel li { color: var(--secondary-text); font-size: 0.88rem; }
.setup-panel ol { padding-left: 1.2rem; }
.setup-panel li + li { margin-top: 9px; }
.setup-panel .legal-note { margin-top: 20px; background: var(--raised-surface); }

.troubleshooting h2 { margin-bottom: 28px; font-size: clamp(2rem, 4vw, 3rem); }

.topic {
  padding-block: 25px;
  border-top: 1px solid var(--border);
}

.topic h3 { margin-bottom: 10px; font-size: 1.06rem; }
.topic p,
.topic li { color: var(--secondary-text); font-size: 0.9rem; }
.topic p { margin: 0 0 10px; }
.topic ol,
.topic ul { margin: 8px 0 0; padding-left: 1.25rem; }
.topic li + li { margin-top: 6px; }

.error-page {
  display: grid;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100svh - var(--header-height));
  place-items: center;
  padding-block: 70px;
}

.error-card { max-width: 620px; text-align: center; }
.error-code { display: block; margin-bottom: 16px; color: var(--accent); font-size: 0.78rem; font-weight: 850; letter-spacing: 0.15em; }
.error-card h1 { max-width: none; margin-bottom: 18px; font-size: clamp(3rem, 8vw, 6.4rem); }
.error-card p { margin: 0 auto 28px; color: var(--secondary-text); }
.error-card .button-row { justify-content: center; }

@media (max-width: 1050px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 62px;
    padding-block: 90px 112px;
  }

  .hero-copy { max-width: 760px; }
  .hero-copy h1 { max-width: 13ch; }
  .product-preview { width: min(100%, 760px); }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card:nth-child(2),
  .feature-card:nth-child(4),
  .feature-card:nth-child(5),
  .feature-card:nth-child(7) { background: color-mix(in srgb, var(--raised-surface) 55%, transparent); }
  .feature-card:nth-child(2),
  .feature-card:nth-child(3),
  .feature-card:nth-child(6),
  .feature-card:nth-child(7) { background: color-mix(in srgb, var(--subtle-surface) 46%, transparent); }
}

@media (max-width: 860px) {
  .calendar-section,
  .split-section,
  .open-source-inner,
  .support-columns {
    grid-template-columns: 1fr;
  }

  .calendar-section { gap: 62px; }
  .calendar-diagram { max-width: 600px; }
  .split-section,
  .open-source-inner { gap: 38px; }
  .split-section h2,
  .open-source-inner h2 { max-width: 14ch; }
  .resource-links { max-width: 650px; }
  .support-intro-grid { grid-template-columns: 1fr; }
  .support-card { min-height: 130px; }
  .support-columns { gap: 72px; }
  .setup-panel { position: static; }

  .legal-layout {
    grid-template-columns: minmax(0, var(--legal-content-width));
    gap: 44px;
  }

  .table-of-contents {
    position: static;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: var(--subtle-surface);
  }

  .table-of-contents ol { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 20px; }
}

@media (max-width: 760px) {
  :root { --header-height: 62px; }
  .section-shell,
  .nav-shell { width: min(calc(100% - 32px), var(--max-content-width)); }
  .site-header { min-height: var(--header-height); backdrop-filter: none; }
  .nav-shell { min-height: var(--header-height); }

  .js .nav-toggle { display: inline-flex; }
  .js .primary-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--border);
    border-top: 0;
    border-radius: 0 0 9px 9px;
    background: var(--raised-surface);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.12);
  }

  .js .primary-nav.is-open { display: flex; }
  .js .primary-nav a { display: flex; min-height: 44px; align-items: center; padding-inline: 12px; border-radius: 5px; }
  .js .primary-nav a:hover { background: var(--subtle-surface); }

  .primary-nav:not(.is-open) {
    flex-wrap: wrap;
  }

  .hero { padding-block: 70px 90px; gap: 50px; }
  h1 { font-size: clamp(2.8rem, 14vw, 4.4rem); }
  h2 { font-size: clamp(2.15rem, 10vw, 3.25rem); }
  .hero-lede { font-size: 1rem; }
  .preview-layout { grid-template-columns: 116px minmax(330px, 1fr); min-height: 405px; }
  .preview-window { overflow-x: auto; }
  .preview-main { padding: 26px 22px; }
  .preview-sidebar { padding-inline: 9px; }
  .preview-caption { text-align: left; }
  .section-block { padding-block: 86px; }
  .feature-card { min-height: 210px; padding: 24px; }
  .calendar-section { grid-template-columns: minmax(0, 1fr); }
  .calendar-diagram { grid-template-columns: 66px minmax(0, 1fr); }
  .diagram-flow { padding-inline: 16px; }
  .footer-grid,
  .footer-meta { align-items: flex-start; flex-direction: column; }
  .footer-grid nav { justify-content: flex-start; }
  .footer-meta { gap: 8px; }
  .page-hero { padding-top: 66px; }
  .page-hero h1 { font-size: clamp(2.7rem, 13vw, 4rem); }
  .legal-layout { padding-block: 40px 90px; }
  .table-of-contents ol { grid-template-columns: 1fr; }
  .support-layout { padding-block: 48px 90px; }
  .support-intro-grid { margin-bottom: 68px; }
}

@media (max-width: 540px) {
  .button-row { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card,
  .feature-card:nth-child(n) { min-height: 190px; background: color-mix(in srgb, var(--raised-surface) 55%, transparent); }
  .feature-card:nth-child(even) { background: color-mix(in srgb, var(--subtle-surface) 46%, transparent); }
  .feature-icon { margin-bottom: 32px; }
  .calendar-diagram { grid-template-columns: 1fr; }
  .diagram-date { display: flex; align-items: baseline; justify-content: center; gap: 7px; padding: 13px; border-right: 0; border-bottom: 1px solid var(--border); }
  .diagram-date strong { font-size: 1.1rem; }
  .diagram-flow { padding: 20px 14px 26px; }
  .diagram-event { grid-template-columns: 4px 1fr 13px; gap: 9px; padding: 11px; }
  .technical-note { grid-template-columns: 1fr; }
  .text-links { flex-direction: column; }
  .footer-grid nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
  .scope-item { padding: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .table-of-contents,
  .skip-link { display: none; }
  body { background: #fff; color: #111; }
  .legal-layout { display: block; width: 100%; padding: 0; }
  .legal-content { max-width: none; }
  .legal-content p,
  .legal-content li { color: #222; }
}