/* Restriction Cascade site. One stylesheet, light and dark, no external requests. */

:root {
  --brand: #0c66e4;
  --brand-strong: #0747a6;
  --brand-ink: #ffffff;
  --brand-soft: #e9f2ff;
  --brand-line: #cce0ff;

  --ink: #172b4d;
  --ink-2: #44546f;
  --muted: #626f86;
  --line: #dcdfe4;
  --line-soft: #ebecf0;

  --bg: #ffffff;
  --bg-soft: #f7f8f9;
  --bg-tint: #f5f9ff;
  --card: #ffffff;

  --ok: #1f845a;
  --ok-soft: #dcfff1;
  --warn: #a54800;
  --warn-soft: #fff7d6;
  --danger: #c9372c;
  --danger-soft: #ffeceb;

  --shadow-sm: 0 1px 2px rgba(9, 30, 66, 0.08);
  --shadow: 0 1px 2px rgba(9, 30, 66, 0.06), 0 8px 24px rgba(9, 30, 66, 0.08);
  --shadow-lg: 0 2px 6px rgba(9, 30, 66, 0.08), 0 24px 60px rgba(9, 30, 66, 0.16);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;

  --wrap: 1160px;
  --header-h: 64px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #579dff;
    --brand-strong: #85b8ff;
    --brand-ink: #0b1a33;
    --brand-soft: rgba(87, 157, 255, 0.12);
    --brand-line: rgba(87, 157, 255, 0.35);

    --ink: #e6ebf1;
    --ink-2: #b6c2cf;
    --muted: #8c9bab;
    --line: #2c333a;
    --line-soft: #22272b;

    --bg: #0e1215;
    --bg-soft: #14181c;
    --bg-tint: #111925;
    --card: #161a1d;

    --ok: #4bce97;
    --ok-soft: rgba(75, 206, 151, 0.12);
    --warn: #f5cd47;
    --warn-soft: rgba(245, 205, 71, 0.12);
    --danger: #f87168;
    --danger-soft: rgba(248, 113, 104, 0.12);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.4), 0 24px 60px rgba(0, 0, 0, 0.5);

    color-scheme: dark;
  }
}

/* ---------- Base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

img {
  height: auto;
  display: block;
}

a {
  color: var(--brand);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--brand-strong);
}

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

h1,
h2,
h3,
h4 {
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 750;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
}

code,
kbd {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
}

code {
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  overflow-wrap: anywhere;
}

kbd {
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 0.05em 0.45em;
  background: var(--card);
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 100;
  background: var(--brand);
  color: var(--brand-ink);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 12px;
}

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

/* ---------- Buttons and small parts ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--brand);
  color: var(--brand-ink);
  box-shadow: 0 6px 18px rgba(12, 102, 228, 0.28);
}

.btn-primary:hover {
  background: var(--brand-strong);
  color: var(--brand-ink);
}

.btn-ghost {
  background: var(--card);
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--brand-line);
  box-shadow: var(--shadow-sm);
}

.btn svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-soft);
  border: 1px solid var(--brand-line);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.lead {
  font-size: 1.18rem;
  color: var(--ink-2);
  max-width: 40em;
}

.muted {
  color: var(--muted);
}

.section {
  padding: 88px 0;
}

.section-tint {
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head .lead {
  margin: 0 auto;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--brand-soft);
  color: var(--brand);
  flex: none;
}

.icon svg {
  width: 22px;
  height: 22px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.01em;
}

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

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-weight: 550;
  font-size: 0.95rem;
  padding: 8px 12px;
  border-radius: 999px;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--bg-soft);
}

.nav .btn {
  margin-left: 8px;
  min-height: 38px;
  padding: 0 16px;
  font-size: 0.92rem;
}

.nav .btn,
.nav .btn:hover {
  color: var(--brand-ink);
  background: var(--brand);
}

.menu {
  display: none;
  margin-left: auto;
}

.menu summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--ink);
}

.menu summary::-webkit-details-marker {
  display: none;
}

.menu summary svg {
  width: 22px;
  height: 22px;
}

.menu-panel {
  position: absolute;
  left: 12px;
  right: 12px;
  top: calc(var(--header-h) - 4px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  display: grid;
}

.menu-panel a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  padding: 12px 14px;
  border-radius: 10px;
}

.menu-panel a:hover {
  background: var(--bg-soft);
}

@media (max-width: 820px) {
  .nav {
    display: none;
  }

  .menu {
    display: block;
  }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 88px;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(29, 122, 252, 0.18), transparent 60%),
    radial-gradient(700px 380px at -10% 10%, rgba(29, 122, 252, 0.1), transparent 60%),
    var(--bg-tint);
  border-bottom: 1px solid var(--line-soft);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 65%);
  opacity: 0.6;
  pointer-events: none;
}

.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero h1 span {
  background: linear-gradient(120deg, #1d7afc, #0747a6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@media (prefers-color-scheme: dark) {
  .hero h1 span {
    background: linear-gradient(120deg, #85b8ff, #579dff);
    -webkit-background-clip: text;
    background-clip: text;
  }
}

.hero .lead {
  margin-bottom: 28px;
}

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

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 32px;
  padding: 0;
  list-style: none;
  color: var(--ink-2);
  font-size: 0.92rem;
  font-weight: 550;
}

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

.trust svg {
  width: 18px;
  height: 18px;
  color: var(--ok);
  flex: none;
}

.shot {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.shot-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-soft);
}

.shot-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line);
}

.shot-bar span {
  margin-left: 10px;
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}

.shot img {
  width: 100%;
}

.hero .shot {
  transform: perspective(2000px) rotateY(-3deg);
}

.shot a {
  display: block;
  cursor: zoom-in;
}

.float-card {
  position: absolute;
  left: -28px;
  bottom: -26px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  max-width: 280px;
}

.float-card strong {
  display: block;
  color: var(--ink);
}

.float-card span {
  color: var(--muted);
}

.float-card .icon {
  background: var(--ok-soft);
  color: var(--ok);
}

.hero-visual {
  position: relative;
}

@media (max-width: 960px) {
  .hero .wrap {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero .shot {
    transform: none;
  }

  .float-card {
    left: 12px;
    bottom: -20px;
  }
}

/* ---------- Problem / solution ---------- */

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.compare-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.compare-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
}

.compare-card .tag {
  margin-bottom: 12px;
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
}

.tag-bad {
  background: var(--danger-soft);
  color: var(--danger);
}

.tag-good {
  background: var(--ok-soft);
  color: var(--ok);
}

.tree {
  margin: 18px 0 8px;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
}

.tree-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--line-soft);
  font-weight: 600;
  font-size: 0.95rem;
}

.tree-row + .tree-row {
  margin-top: 8px;
}

.tree-row.l1 {
  margin-left: 28px;
}

.tree-row.l2 {
  margin-left: 56px;
}

.tree-row svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.tree-row .who {
  margin-left: auto;
  font-size: 0.8rem;
  font-weight: 650;
  padding: 2px 9px;
  border-radius: 999px;
  white-space: nowrap;
}

.who-open {
  color: var(--danger);
  background: var(--danger-soft);
}

.who-locked {
  color: var(--ok);
  background: var(--ok-soft);
}

.lock-open {
  color: var(--danger);
}

.lock-closed {
  color: var(--ok);
}

.compare > * {
  min-width: 0;
}

@media (max-width: 860px) {
  .compare {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 520px) {
  .compare-card {
    padding: 20px;
  }

  .tree {
    padding: 10px;
  }

  .tree-row {
    padding: 8px 10px;
    font-size: 0.9rem;
  }

  .tree-row.l1 {
    margin-left: 14px;
  }

  .tree-row.l2 {
    margin-left: 28px;
  }

  .tree-row .who {
    font-size: 0.74rem;
    padding: 2px 7px;
  }
}

/* ---------- Features ---------- */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--brand-line);
}

.card .icon {
  margin-bottom: 16px;
}

.card h3 {
  margin-bottom: 6px;
}

.card p {
  color: var(--ink-2);
  margin: 0;
  font-size: 0.97rem;
}

@media (max-width: 960px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Steps ---------- */

.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.steps li {
  counter-increment: step;
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 24px;
}

.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--brand-ink);
  font-weight: 800;
}

.steps p {
  color: var(--ink-2);
  margin: 0;
}

@media (max-width: 860px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

/* ---------- Showcase rows ---------- */

.showcase {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: center;
}

.showcase + .showcase {
  margin-top: 88px;
}

.showcase.flip {
  grid-template-columns: 1.35fr 1fr;
}

.checks {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: grid;
  gap: 12px;
}

.checks li {
  display: flex;
  gap: 12px;
  color: var(--ink-2);
}

.checks svg {
  width: 22px;
  height: 22px;
  flex: none;
  color: var(--ok);
  margin-top: 2px;
}

.checks strong {
  color: var(--ink);
}

@media (max-width: 960px) {
  .showcase,
  .showcase.flip {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .showcase.flip .showcase-text {
    order: -1;
  }
}

/* ---------- Pricing ---------- */

.pricing {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: start;
}

.price-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}

.price-big {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}

.price-big small {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.97rem;
}

th,
td {
  text-align: left;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--bg-soft);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

td.num {
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  white-space: nowrap;
}

@media (max-width: 860px) {
  .pricing {
    grid-template-columns: 1fr;
  }
}

/* ---------- FAQ ---------- */

.faq {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 22px;
}

.faq details[open] {
  box-shadow: var(--shadow-sm);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-weight: 650;
  color: var(--ink);
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "";
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg) translateY(-3px);
  transition: transform 0.2s ease;
  flex: none;
}

.faq details[open] summary::after {
  transform: rotate(-135deg) translateY(-3px);
}

.faq details p {
  color: var(--ink-2);
  margin: 0 0 18px;
}

/* ---------- CTA band ---------- */

.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: 56px 40px;
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, #1d7afc 0%, #0c66e4 45%, #07357e 100%);
  box-shadow: var(--shadow-lg);
}

.cta-band::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(133, 184, 255, 0.4), transparent 70%);
}

.cta-band h2 {
  color: #fff;
  position: relative;
}

.cta-band p {
  color: #cce0ff;
  max-width: 560px;
  margin: 0 auto 26px;
  position: relative;
}

.cta-band .cta-row {
  justify-content: center;
  position: relative;
}

.cta-band .btn-primary {
  background: #fff;
  color: #0747a6;
  box-shadow: none;
}

.cta-band .btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line-soft);
  background: var(--bg-soft);
  padding: 56px 0 36px;
  font-size: 0.94rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 32px;
}

.footer-grid h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 12px;
}

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

.footer-grid a {
  color: var(--ink-2);
  text-decoration: none;
}

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

.footer-about p {
  color: var(--muted);
  margin-top: 12px;
  max-width: 320px;
}

.footer-legal {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-about {
    grid-column: 1 / -1;
  }
}

/* ---------- Page header (inner pages) ---------- */

.page-hero {
  padding: 56px 0 40px;
  background:
    radial-gradient(700px 300px at 90% -20%, rgba(29, 122, 252, 0.14), transparent 60%),
    var(--bg-tint);
  border-bottom: 1px solid var(--line-soft);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
}

.page-hero .lead {
  margin-bottom: 0;
}

.crumbs {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.crumbs a {
  color: var(--muted);
  text-decoration: none;
}

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

/* ---------- Docs layout ---------- */

.docs {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 56px;
  padding: 48px 20px 96px;
}

.toc {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow: auto;
  padding-right: 8px;
}

.toc h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 10px 12px;
}

.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 2px solid var(--line-soft);
}

.toc a {
  display: block;
  padding: 6px 12px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.93rem;
}

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

.toc a.active {
  color: var(--brand);
  border-left-color: var(--brand);
  font-weight: 650;
}

.toc-mobile {
  display: none;
}

.prose {
  max-width: 760px;
}

.prose h2 {
  font-size: 1.65rem;
  margin-top: 48px;
}

.prose > section + section {
  margin-top: 64px;
}

.prose section > h2:first-child,
.prose > h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin-top: 28px;
}

.prose p,
.prose li {
  color: var(--ink-2);
}

.prose strong {
  color: var(--ink);
}

.prose ul,
.prose ol {
  padding-left: 1.3em;
}

.prose li + li {
  margin-top: 6px;
}

.prose .checks {
  padding-left: 0;
}

.prose .checks li + li {
  margin-top: 0;
}

.prose .table-wrap {
  margin: 16px 0 24px;
}

.anchor {
  color: var(--muted);
  text-decoration: none;
  opacity: 0;
  margin-left: 8px;
  font-weight: 500;
}

h2:hover .anchor,
h3:hover .anchor {
  opacity: 1;
}

.callout {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--brand-line);
  background: var(--brand-soft);
  margin: 20px 0;
}

.callout svg {
  width: 22px;
  height: 22px;
  flex: none;
  color: var(--brand);
  margin-top: 2px;
}

.callout p {
  margin: 0;
  color: var(--ink);
}

.callout.warn {
  border-color: color-mix(in srgb, var(--warn) 35%, transparent);
  background: var(--warn-soft);
}

.callout.warn svg {
  color: var(--warn);
}

.callout.ok {
  border-color: color-mix(in srgb, var(--ok) 35%, transparent);
  background: var(--ok-soft);
}

.callout.ok svg {
  color: var(--ok);
}

.num-steps {
  counter-reset: s;
  list-style: none;
  padding: 0 !important;
  margin: 16px 0 24px;
  display: grid;
  gap: 14px;
}

.num-steps li {
  counter-increment: s;
  position: relative;
  padding: 2px 0 0 46px;
  min-height: 32px;
}

.num-steps li::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--brand-soft);
  color: var(--brand);
  border: 1px solid var(--brand-line);
  font-weight: 800;
  font-size: 0.9rem;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 18px 0 8px;
}

.mode-grid .card {
  padding: 20px;
}

.mode-grid .card:hover {
  transform: none;
}

.mode-grid h3 {
  margin-top: 0;
}

.figure {
  margin: 24px 0 32px;
}

.figure.narrow .shot {
  max-width: 540px;
  margin: 0 auto;
}

.figure .shot {
  box-shadow: var(--shadow);
}

.figure figcaption {
  margin-top: 10px;
  font-size: 0.88rem;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1000px) {
  .docs {
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 24px;
  }

  .toc {
    display: none;
  }

  .toc-mobile {
    display: block;
    margin-bottom: 32px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0 18px;
  }

  .toc-mobile summary {
    cursor: pointer;
    padding: 14px 0;
    font-weight: 650;
  }

  .toc-mobile ol {
    margin: 0 0 14px;
    padding-left: 1.2em;
    display: grid;
    gap: 6px;
  }

  .mode-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Single-column pages ---------- */

.page-body {
  padding-top: 48px;
  padding-bottom: 96px;
}

.page-body .prose,
.page-body .contact-grid {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.page-body .contact-grid {
  margin-bottom: 56px;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 550;
}

.meta-line span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-line svg {
  width: 16px;
  height: 16px;
}

/* ---------- Support / misc ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.contact-card.primary {
  background:
    radial-gradient(500px 220px at 100% 0%, rgba(29, 122, 252, 0.14), transparent 60%),
    var(--card);
  border-color: var(--brand-line);
  box-shadow: var(--shadow);
}

.contact-card .icon {
  margin-bottom: 14px;
}

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

.contact-card .btn {
  margin-top: 4px;
}

.email {
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  display: inline-block;
  margin: 4px 0 16px;
}

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

.glance {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 0 0 40px;
}

.glance div {
  display: flex;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.glance svg {
  width: 22px;
  height: 22px;
  flex: none;
  color: var(--ok);
  margin-top: 2px;
}

.glance p {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.95rem;
}

.glance strong {
  display: block;
  color: var(--ink);
}

@media (max-width: 760px) {
  .contact-grid,
  .glance {
    grid-template-columns: 1fr;
  }
}

.not-found {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 80px 20px;
}

.not-found .code {
  font-size: 5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--brand);
  line-height: 1;
}