/* OLS project site.
   Palette is the app palette, copied from ui/src/index.css: teal/emerald hue 168
   paired with a lime success tone. Same tokens the product runs on, so the site and
   the app read as one thing. No web fonts -- docs/BRAND.md 2.3: a display face in a
   developer tool reads as marketing. */

:root {
  --bg: oklch(0.15 0.008 200);
  --bg-deep: oklch(0.12 0.008 200);
  --surface: oklch(0.19 0.009 200);
  --surface-2: oklch(0.23 0.011 200);
  --fg: oklch(0.95 0.005 200);
  --fg-muted: oklch(0.7 0.014 200);
  --fg-dim: oklch(0.58 0.014 200);

  --primary: oklch(0.75 0.14 168);
  --primary-dim: oklch(0.6 0.135 168);
  --primary-wash: oklch(0.28 0.05 168);
  --success: oklch(0.72 0.17 145);
  --warning: oklch(0.8 0.15 80);
  --destructive: oklch(0.65 0.2 27);

  --line: oklch(1 0 0 / 10%);
  --line-strong: oklch(1 0 0 / 16%);

  --radius: 10px;
  --radius-lg: 16px;
  --nav-h: 60px;
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 0.68, 0.32, 1);

  --sans: ui-sans-serif, -apple-system, "Segoe UI Variable Text", "Segoe UI", Inter,
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.006em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: oklch(0.85 0.14 168);
}

code,
kbd,
pre {
  font-family: var(--mono);
  font-variant-ligatures: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 620;
  letter-spacing: -0.028em;
  line-height: 1.15;
  text-wrap: balance;
}

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--primary);
  color: var(--bg-deep);
  padding: 10px 16px;
  border-radius: 0 0 var(--radius) 0;
  font-weight: 600;
}

.skip:focus {
  left: 0;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- backdrop ---------- */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(
      62rem 34rem at 78% -8%,
      oklch(0.75 0.14 168 / 0.13),
      transparent 62%
    ),
    radial-gradient(
      48rem 30rem at 6% 4%,
      oklch(0.72 0.17 145 / 0.08),
      transparent 60%
    ),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}

/* Blueprint grid: the product generates nginx/apache/caddy vhosts, so the page sits
   on the same ruled surface a generated config would. */
.backdrop::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(1 0 0 / 3%) 1px, transparent 1px),
    linear-gradient(90deg, oklch(1 0 0 / 3%) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, #000 0, transparent 62%);
  -webkit-mask-image: linear-gradient(180deg, #000 0, transparent 62%);
}

/* Loopback ring, from docs/BRAND.md 2.1: the O in OLS, returning to its own start. */
.backdrop::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -160px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  border: 1px solid oklch(0.75 0.14 168 / 0.16);
  box-shadow:
    inset 0 0 0 1px oklch(0.75 0.14 168 / 0.05),
    0 0 120px oklch(0.75 0.14 168 / 0.07);
  mask-image: conic-gradient(
    from 0deg,
    #000 0deg 250deg,
    transparent 300deg 360deg
  );
  -webkit-mask-image: conic-gradient(
    from 0deg,
    #000 0deg 250deg,
    transparent 300deg 360deg
  );
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition:
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    backdrop-filter 0.25s var(--ease);
}

.nav[data-stuck="true"] {
  background: oklch(0.15 0.008 200 / 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--fg);
  white-space: nowrap;
}

.brand img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  align-self: center;
}

.brand b {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* The acronym and its expansion, set as one lockup: the mark already carries
   "OLS", so the wordmark beside it is the product's own titlebar name. */
.brand em {
  font-style: normal;
  font-size: 13px;
  font-weight: 450;
  color: var(--fg-dim);
  letter-spacing: -0.005em;
}

.nav__links {
  display: flex;
  gap: 4px;
  margin-left: auto;
  list-style: none;
  padding: 0;
}

.nav__links a {
  display: block;
  padding: 7px 11px;
  border-radius: 7px;
  font-size: 14px;
  color: var(--fg-muted);
  transition:
    color 0.18s var(--ease),
    background 0.18s var(--ease);
}

.nav__links a:hover {
  color: var(--fg);
  background: oklch(1 0 0 / 5%);
}

.nav__links a[aria-current="true"] {
  color: var(--fg);
  background: var(--primary-wash);
}

.nav__cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__toggle {
  display: none;
  margin-left: auto;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--fg);
  cursor: pointer;
}

.nav__toggle svg {
  width: 18px;
  height: 18px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 9px;
  border: 1px solid transparent;
  font-size: 14.5px;
  font-weight: 570;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform 0.16s var(--ease),
    background 0.18s var(--ease),
    border-color 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex: none;
}

.btn--primary {
  background: var(--primary);
  color: oklch(0.16 0.03 168);
  box-shadow:
    0 1px 0 oklch(1 0 0 / 22%) inset,
    0 6px 22px oklch(0.75 0.14 168 / 0.22);
}

.btn--primary:hover {
  background: oklch(0.82 0.145 168);
  color: oklch(0.16 0.03 168);
  transform: translateY(-1px);
  box-shadow:
    0 1px 0 oklch(1 0 0 / 25%) inset,
    0 10px 30px oklch(0.75 0.14 168 / 0.3);
}

.btn--ghost {
  background: oklch(1 0 0 / 4%);
  border-color: var(--line-strong);
  color: var(--fg);
}

.btn--ghost:hover {
  background: oklch(1 0 0 / 8%);
  border-color: oklch(1 0 0 / 26%);
  color: var(--fg);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 8px 13px;
  font-size: 13.5px;
  border-radius: 8px;
}

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

.section {
  padding-block: clamp(64px, 9vw, 112px);
  scroll-margin-top: calc(var(--nav-h) + 16px);
}

.section--tight {
  padding-block: clamp(48px, 6vw, 72px);
}

.section__head {
  max-width: 640px;
  margin-bottom: clamp(32px, 4vw, 52px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: currentColor;
}

.section__head p {
  margin-top: 14px;
  color: var(--fg-muted);
  font-size: 17px;
}

.section__head--center {
  margin-inline: auto;
  text-align: center;
}

.section__head--center .eyebrow::before {
  display: none;
}

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

.hero {
  position: relative;
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(40px, 5vw, 64px);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(36px, 5vw, 64px);
  align-items: center;
}

.hero__title {
  font-size: clamp(40px, 5.6vw, 62px);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.hero__title .mark {
  display: block;
  margin-bottom: 4px;
}

.hero__title .mark img {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  filter: drop-shadow(0 6px 20px oklch(0.75 0.14 168 / 0.28));
}

.hero__lede {
  margin-top: 20px;
  font-size: clamp(16.5px, 1.5vw, 18.5px);
  color: var(--fg-muted);
  max-width: 54ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero__note {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--fg-dim);
}

.hero__note code {
  font-size: 12.5px;
  padding: 1.5px 5px;
  border-radius: 5px;
  background: oklch(1 0 0 / 7%);
  color: var(--fg-muted);
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  padding: 0;
  list-style: none;
}

.facts li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: oklch(1 0 0 / 3%);
  font-size: 12.5px;
  color: var(--fg-muted);
}

.facts svg {
  width: 13px;
  height: 13px;
  color: var(--success);
}

/* app window frame around a real screenshot */
.shot {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow:
    0 40px 90px -30px oklch(0 0 0 / 0.75),
    0 0 0 1px oklch(0 0 0 / 0.35);
  overflow: hidden;
}

.shot::after {
  content: "";
  position: absolute;
  inset: 34px 0 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 62%, oklch(0.15 0.008 200 / 0.5));
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.shot:hover::after {
  opacity: 1;
}

.shot__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding-inline: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.shot__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: oklch(1 0 0 / 16%);
}

.shot__dot:nth-child(1) {
  background: oklch(0.65 0.2 27 / 0.7);
}

.shot__dot:nth-child(2) {
  background: oklch(0.8 0.15 80 / 0.7);
}

.shot__dot:nth-child(3) {
  background: oklch(0.72 0.17 145 / 0.75);
}

.shot__title {
  margin-left: 6px;
  font-size: 11.5px;
  color: var(--fg-dim);
  font-family: var(--mono);
}

.shot__img {
  position: relative;
  overflow: hidden;
}

.shot__img img {
  width: 100%;
  height: auto;
  transition: transform 0.6s var(--ease);
}

.shot:hover .shot__img img {
  transform: scale(1.012);
}

.shot--hero {
  box-shadow:
    0 50px 110px -34px oklch(0 0 0 / 0.8),
    0 0 70px oklch(0.75 0.14 168 / 0.12),
    0 0 0 1px oklch(0 0 0 / 0.35);
}

/* ---------- what ---------- */

.what {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(32px, 5vw, 60px);
  align-items: start;
}

.prose p + p {
  margin-top: 16px;
}

.prose {
  color: var(--fg-muted);
  font-size: 16.5px;
  max-width: 60ch;
}

.prose strong {
  color: var(--fg);
  font-weight: 600;
}

.doors {
  display: grid;
  gap: 10px;
}

.door {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition:
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.door:hover {
  border-color: oklch(0.75 0.14 168 / 0.4);
  transform: translateX(2px);
}

.door__icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 8px;
  background: var(--primary-wash);
  color: var(--primary);
}

.door__icon svg {
  width: 17px;
  height: 17px;
}

.door b {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
}

.door small {
  display: block;
  color: var(--fg-dim);
  font-size: 12.5px;
  font-family: var(--mono);
}

.flow {
  margin-top: 14px;
  padding: 12px 16px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--fg-dim);
  font-size: 13px;
  text-align: center;
}

.flow code {
  color: var(--fg-muted);
}

/* ---------- features ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface), oklch(0.175 0.009 200));
  transition:
    border-color 0.22s var(--ease),
    transform 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}

.card:hover {
  border-color: oklch(0.75 0.14 168 / 0.35);
  transform: translateY(-3px);
  box-shadow: 0 22px 44px -26px oklch(0 0 0 / 0.8);
}

.card__icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--primary-wash);
  color: var(--primary);
  margin-bottom: 15px;
}

.card__icon svg {
  width: 18px;
  height: 18px;
}

.card h3 {
  font-size: 16.5px;
  letter-spacing: -0.02em;
}

.card p {
  margin-top: 8px;
  color: var(--fg-muted);
  font-size: 14.5px;
}

.card ul {
  margin: 13px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.card li {
  position: relative;
  padding-left: 17px;
  font-size: 13.5px;
  color: var(--fg-dim);
}

.card li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 2px;
  background: var(--primary-dim);
}

/* ---------- showcase ---------- */

.showcase {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.tabs {
  display: grid;
  gap: 3px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  position: sticky;
  top: calc(var(--nav-h) + 20px);
}

.tab {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 11px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--fg-muted);
  font: inherit;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition:
    background 0.18s var(--ease),
    color 0.18s var(--ease);
}

.tab:hover {
  background: oklch(1 0 0 / 5%);
  color: var(--fg);
}

.tab[aria-selected="true"] {
  background: var(--primary-wash);
  color: var(--fg);
  font-weight: 560;
}

.tab__dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: oklch(1 0 0 / 22%);
  transition: background 0.18s var(--ease);
}

.tab[aria-selected="true"] .tab__dot {
  background: var(--primary);
  box-shadow: 0 0 0 3px oklch(0.75 0.14 168 / 0.18);
}

.panel {
  display: none;
}

.panel[data-active="true"] {
  display: block;
  animation: panel-in 0.4s var(--ease);
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

.panel__caption {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: baseline;
  margin-top: 16px;
  color: var(--fg-muted);
  font-size: 14.5px;
}

.panel__caption b {
  color: var(--fg);
  font-weight: 600;
}

.panel__caption span {
  color: var(--fg-dim);
  font-size: 13.5px;
}

/* ---------- code blocks ---------- */

.code {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-deep);
  overflow: hidden;
}

.code__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding-inline: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.code__bar b {
  font: 500 11.5px var(--mono);
  color: var(--fg-dim);
  font-weight: 500;
}

.code__copy {
  margin-left: auto;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: transparent;
  color: var(--fg-muted);
  font: 500 11.5px var(--sans);
  cursor: pointer;
  transition:
    color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.code__copy:hover {
  color: var(--fg);
  border-color: oklch(0.75 0.14 168 / 0.45);
}

.code__copy[data-done="true"] {
  color: var(--success);
  border-color: oklch(0.72 0.17 145 / 0.45);
}

.code pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
  color: oklch(0.86 0.02 200);
  tab-size: 2;
}

.code .c {
  color: var(--fg-dim);
}

.code .k {
  color: var(--primary);
}

.code .s {
  color: oklch(0.78 0.13 145);
}

.code .p {
  color: var(--warning);
}

/* ---------- getting started ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  counter-reset: step;
  margin-bottom: 30px;
}

.step {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-bottom: 12px;
  border-radius: 7px;
  background: var(--primary-wash);
  color: var(--primary);
  font: 600 12.5px var(--mono);
}

.step h3 {
  font-size: 15px;
}

.step p {
  margin-top: 7px;
  color: var(--fg-muted);
  font-size: 14px;
}

.start-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

/* The CLI is a second door, not the main one: it gets its own panel rather than
   being folded into the install steps. */
.optional {
  margin-bottom: 22px;
  padding: 22px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  background: oklch(1 0 0 / 2%);
}

.optional__title {
  font-size: 16.5px;
  letter-spacing: -0.02em;
}

.optional > p {
  margin-top: 10px;
  color: var(--fg-muted);
  font-size: 14.5px;
  max-width: 76ch;
}

.optional__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.optional__list li {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--fg-muted);
  font-size: 14px;
}

.optional__list b {
  display: block;
  color: var(--fg);
  font-weight: 600;
  margin-bottom: 4px;
}

.optional__list code {
  color: var(--primary);
}

.optional__foot {
  font-size: 13.5px !important;
  color: var(--fg-dim) !important;
}

.panelbox {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.panelbox h3 {
  font-size: 15.5px;
  margin-bottom: 14px;
}

.panelbox h3.spaced {
  margin-top: 22px;
}

.panelbox > p {
  color: var(--fg-muted);
  font-size: 14.5px;
}

.panelbox .code {
  margin-top: 14px;
}

.panelbox.stacked {
  margin-top: 16px;
}

.panelbox.stacked > p + .diag {
  margin-top: 14px;
}

/* ---------- technical ---------- */

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.spec-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.spec-list div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.spec-list div:last-child {
  border-bottom: 0;
}

.spec-list dt {
  color: var(--fg-dim);
  font-family: var(--mono);
  font-size: 12.5px;
}

.spec-list dd {
  margin: 0;
  color: var(--fg-muted);
}

.taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 16px;
}

.tag {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: oklch(1 0 0 / 3%);
  font: 500 12px var(--mono);
  color: var(--fg-muted);
}

.diag {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--mono);
  font-size: 12.5px;
}

.diag div {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--line);
  color: var(--fg-muted);
}

.diag div:last-child {
  border-bottom: 0;
}

.diag b {
  font-weight: 500;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.diag .problem b {
  color: var(--destructive);
}

.diag .cause b {
  color: var(--warning);
}

.diag .fix b {
  color: var(--success);
}

/* ---------- open source ---------- */

.oss {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
  padding: clamp(28px, 4vw, 44px);
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background:
    radial-gradient(
      40rem 20rem at 88% 0%,
      oklch(0.75 0.14 168 / 0.1),
      transparent 65%
    ),
    var(--surface);
}

.oss p {
  margin-top: 14px;
  color: var(--fg-muted);
}

.oss__actions {
  display: grid;
  gap: 10px;
}

.oss__actions a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: oklch(1 0 0 / 3%);
  color: var(--fg);
  transition:
    border-color 0.2s var(--ease),
    background 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.oss__actions a:hover {
  border-color: oklch(0.75 0.14 168 / 0.45);
  background: oklch(1 0 0 / 6%);
  color: var(--fg);
  transform: translateX(2px);
}

.oss__actions svg {
  width: 17px;
  height: 17px;
  flex: none;
  color: var(--primary);
}

.oss__actions small {
  display: block;
  color: var(--fg-dim);
  font-size: 12.5px;
}

/* ---------- final cta ---------- */

.cta {
  position: relative;
  text-align: center;
  padding-block: clamp(72px, 10vw, 128px);
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 46%;
  width: 720px;
  height: 300px;
  translate: -50% -50%;
  background: radial-gradient(
    closest-side,
    oklch(0.75 0.14 168 / 0.16),
    transparent 72%
  );
  pointer-events: none;
}

.cta > * {
  position: relative;
}

.cta h2 {
  font-size: clamp(28px, 4vw, 42px);
  max-width: 20ch;
  margin-inline: auto;
}

.cta p {
  margin: 16px auto 0;
  max-width: 52ch;
  color: var(--fg-muted);
  font-size: 17px;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 30px;
}

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

.footer {
  border-top: 1px solid var(--line);
  padding-block: 40px 34px;
  background: oklch(0 0 0 / 14%);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer__about p {
  margin-top: 12px;
  color: var(--fg-dim);
  font-size: 13.5px;
  max-width: 34ch;
}

.footer h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--fg-dim);
  margin-bottom: 13px;
}

.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.footer a {
  color: var(--fg-muted);
  font-size: 14px;
}

.footer a:hover {
  color: var(--fg);
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--fg-dim);
  font-size: 13px;
}

.footer__base code {
  font-size: 12px;
}

.footer__base .spacer {
  margin-left: auto;
}

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

/* Reveal is opt-in from script: without JS the content is simply there, rather than
   invisible until an observer that never runs decides to show it. */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.6s var(--ease),
    transform 0.6s var(--ease);
}

.js .reveal[data-shown="true"] {
  opacity: 1;
  transform: none;
}

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

  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }

  .btn:hover,
  .card:hover,
  .door:hover,
  .oss__actions a:hover,
  .shot:hover .shot__img img {
    transform: none;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 1040px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__lede {
    max-width: none;
  }

  .features {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .what,
  .oss,
  .start-grid,
  .tech-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .tabs {
    position: static;
    display: flex;
    overflow-x: auto;
    scrollbar-width: none;
    gap: 4px;
  }

  .tabs::-webkit-scrollbar {
    display: none;
  }

  .tab {
    white-space: nowrap;
  }
}

@media (max-width: 860px) {
  .nav__toggle {
    display: inline-flex;
  }

  .nav__cta .btn {
    display: none;
  }

  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    padding: 10px 24px 18px;
    background: oklch(0.13 0.008 200 / 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity 0.2s var(--ease),
      transform 0.2s var(--ease),
      visibility 0.2s;
  }

  .nav__links[data-open="true"] {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav__links a {
    padding: 11px 12px;
    font-size: 15px;
  }

  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15.5px;
  }

  .wrap,
  .nav__inner {
    padding-inline: 18px;
  }

  .features,
  .steps,
  .footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__actions .btn,
  .cta__actions .btn {
    flex: 1 1 100%;
  }

  .hero__title .mark img {
    width: 50px;
    height: 50px;
  }

  .spec-list div {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }

  .diag div {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }

  .diag b {
    margin-bottom: 1px;
  }

  .footer__base .spacer {
    margin-left: 0;
  }
}