/* ==========================================================================
   RangeLendger — shared stylesheet
   Plain CSS, no build step. Loaded by every page.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  color-scheme: dark;

  --bg: #06070a;
  --bg-soft: #090b10;
  --surface: #0f1319;
  --surface-2: #151b23;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --ink: #eef3f8;
  --ink-dim: #a8b3c0;
  --ink-mute: #7f8b99;

  --accent: #37e5b6;
  --accent-soft: rgba(55, 229, 182, 0.12);
  --accent-2: #74a8ff;
  --accent-ink: #032620;
  --danger: #ff7a7a;
  --danger-soft: rgba(255, 122, 122, 0.12);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.9);
  --shadow-lg: 0 60px 120px -50px rgba(0, 0, 0, 1);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI Variable Display",
    "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --wrap: 1160px;
  --gutter: clamp(20px, 5vw, 48px);
  --nav-h: 68px;
}

/* --------------------------------------------------------------------------
   2. Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Fine film grain keeps the large dark fields from banding. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 640;
  letter-spacing: -0.028em;
  line-height: 1.1;
  text-wrap: balance;
}

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

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 40px 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 620;
  transition: top 0.18s ease;
}

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

/* --------------------------------------------------------------------------
   3. Layout helpers
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 2;
}

.wrap--narrow {
  max-width: 860px;
}

.section {
  padding-block: clamp(64px, 9vw, 120px);
  position: relative;
}

.section--tight {
  padding-block: clamp(48px, 6vw, 80px);
}

.section-head {
  max-width: 48rem;
  margin-bottom: clamp(32px, 4vw, 56px);
}

.section-head h2 {
  font-size: clamp(1.85rem, 3.6vw, 2.8rem);
  margin-bottom: 16px;
}

.section-head p {
  color: var(--ink-dim);
  font-size: 1.06rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 0.74rem;
  font-weight: 640;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.lede {
  color: var(--ink-dim);
  font-size: clamp(1.06rem, 1.6vw, 1.22rem);
  line-height: 1.62;
}

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

.rule {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--line-strong) 18%,
    var(--line-strong) 82%,
    transparent
  );
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.97rem;
  font-weight: 620;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s ease, background-color 0.16s ease,
    border-color 0.16s ease, box-shadow 0.16s ease, color 0.16s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

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

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 12px 34px -16px rgba(55, 229, 182, 0.9);
}

.btn--primary:hover {
  background: #55f0c6;
  box-shadow: 0 18px 40px -16px rgba(55, 229, 182, 0.75);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn--sm {
  padding: 9px 16px;
  font-size: 0.88rem;
}

/* --------------------------------------------------------------------------
   5. Header / navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(6, 7, 10, 0.62);
  border-bottom: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

@supports (backdrop-filter: blur(1px)) {
  .site-header {
    backdrop-filter: saturate(150%) blur(14px);
    -webkit-backdrop-filter: saturate(150%) blur(14px);
  }
}

.site-header.is-stuck {
  background: rgba(6, 7, 10, 0.88);
  border-bottom-color: var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--nav-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 660;
  font-size: 1.03rem;
  letter-spacing: -0.02em;
  margin-right: auto;
}

.brand:hover {
  text-decoration: none;
  opacity: 0.9;
}

.brand__mark {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 9px;
  box-shadow: 0 6px 18px -8px rgba(55, 229, 182, 0.8);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--ink-dim);
  font-size: 0.94rem;
  font-weight: 520;
  transition: color 0.16s ease, background-color 0.16s ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
  text-decoration: none;
}

.site-header .btn--sm {
  margin-left: 8px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

.nav-toggle .icon-close,
.nav-toggle[aria-expanded="true"] .icon-open {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

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

  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 8px 0 20px;
    border-top: 1px solid var(--line);
  }

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

  .site-nav a {
    padding: 13px 12px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .site-header .btn--sm {
    margin: 10px 0 0;
    justify-content: center;
  }

  .site-header:has(.site-nav.is-open) {
    background: rgba(6, 7, 10, 0.97);
    border-bottom-color: var(--line);
  }
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(56px, 8vw, 104px) clamp(56px, 8vw, 96px);
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(10px);
}

.hero::before {
  width: min(900px, 110vw);
  height: 620px;
  top: -320px;
  left: -160px;
  background: radial-gradient(
    closest-side,
    rgba(55, 229, 182, 0.2),
    transparent 72%
  );
}

.hero::after {
  width: min(760px, 100vw);
  height: 560px;
  top: -180px;
  right: -220px;
  background: radial-gradient(
    closest-side,
    rgba(116, 168, 255, 0.16),
    transparent 72%
  );
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.15rem);
  letter-spacing: -0.04em;
  margin-bottom: 22px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lede {
  max-width: 34rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 8px;
  margin-bottom: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--ink-dim);
  font-size: 0.83rem;
  letter-spacing: -0.005em;
}

.badge strong {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.chips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  list-style: none;
  padding-inline-start: 0;
}

.chips li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-dim);
  font-size: 0.92rem;
}

.chips svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   7. Device illustration
   -------------------------------------------------------------------------- */
.device-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.device {
  position: relative;
  width: min(320px, 78vw);
  aspect-ratio: 320 / 650;
  padding: 12px;
  border-radius: 46px;
  background: linear-gradient(165deg, #2b333d, #0c0f14 42%, #1b2129);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.07) inset;
}

.device::before {
  content: "";
  position: absolute;
  z-index: 3;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  width: 84px;
  height: 22px;
  border-radius: 999px;
  background: #05070a;
}

.device__screen {
  height: 100%;
  padding: 22px 18px 18px;
  border-radius: 36px;
  background: radial-gradient(
      120% 60% at 50% 0%,
      rgba(55, 229, 182, 0.16),
      transparent 60%
    ),
    #080a0e;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.screen__status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.68rem;
  color: var(--ink-mute);
  padding-inline: 4px;
}

.screen__status span:first-child {
  color: var(--ink);
  font-weight: 620;
}

.screen__title {
  padding-inline: 4px;
}

.screen__title h3 {
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.screen__title p {
  font-size: 0.72rem;
  color: var(--ink-mute);
  margin-top: 2px;
}

.screen__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(
    150deg,
    rgba(55, 229, 182, 0.1),
    rgba(255, 255, 255, 0.02)
  );
}

.ring {
  width: 62px;
  height: 62px;
  flex: none;
}

.ring circle {
  fill: none;
  stroke-width: 7;
  stroke-linecap: round;
}

.ring .ring__track {
  stroke: rgba(255, 255, 255, 0.1);
}

.ring .ring__value {
  stroke: var(--accent);
  stroke-dasharray: 163;
  stroke-dashoffset: 44;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}

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

.screen__stat-label {
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.screen__stat-value {
  margin-top: 2px;
  font-size: 1.28rem;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.screen__stat-value small {
  font-size: 0.66rem;
  font-weight: 500;
  color: var(--ink-mute);
  margin-left: 3px;
}

.screen__stat-trend {
  margin-top: 4px;
  font-size: 0.68rem;
  color: var(--accent);
}

.screen__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.screen__list li {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.028);
}

.screen__icon {
  width: 30px;
  height: 30px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
}

.screen__icon svg {
  width: 15px;
  height: 15px;
}

.screen__icon--blue {
  background: rgba(116, 168, 255, 0.14);
  color: var(--accent-2);
}

.screen__icon--dim {
  background: rgba(255, 255, 255, 0.07);
  color: var(--ink-dim);
}

.screen__row-main {
  min-width: 0;
  flex: 1;
}

.screen__row-main strong {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.screen__row-main span {
  font-size: 0.68rem;
  color: var(--ink-mute);
}

.screen__row-meta {
  text-align: right;
  font-size: 0.76rem;
  font-weight: 600;
  flex: none;
}

.screen__row-meta span {
  display: block;
  font-size: 0.66rem;
  font-weight: 500;
  color: var(--ink-mute);
}

.device-note {
  max-width: 30rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-mute);
}

@media (max-width: 940px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .device-wrap {
    margin-top: 16px;
  }

  .device {
    width: min(320px, 100%);
  }
}

/* --------------------------------------------------------------------------
   8. Principle strip
   -------------------------------------------------------------------------- */
.strip {
  border-block: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.022), transparent);
}

.strip__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
}

.strip__grid > div {
  padding: 32px clamp(18px, 2.6vw, 32px);
  border-left: 1px solid var(--line);
}

.strip__grid > div:first-child {
  border-left: 0;
  padding-left: 0;
}

.strip__grid dt {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 640;
  letter-spacing: -0.035em;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.strip__grid dd {
  margin: 8px 0 0;
  color: var(--ink-dim);
  font-size: 0.92rem;
}

@media (max-width: 780px) {
  .strip__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .strip__grid > div {
    padding-block: 26px;
  }

  .strip__grid > div:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }

  .strip__grid > div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }
}

/* --------------------------------------------------------------------------
   9. Cards
   -------------------------------------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 22px);
}

@media (max-width: 720px) {
  .cards {
    grid-template-columns: 1fr;
  }
}

.card {
  position: relative;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    170deg,
    rgba(255, 255, 255, 0.045),
    rgba(255, 255, 255, 0.012)
  );
  transition: border-color 0.2s ease, transform 0.2s ease,
    background-color 0.2s ease;
}

.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.card__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent);
}

.card__icon svg {
  width: 21px;
  height: 21px;
}

.card h3 {
  font-size: 1.16rem;
  margin-bottom: 10px;
}

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

.card ul {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card ul li {
  position: relative;
  padding-left: 18px;
  font-size: 0.88rem;
  color: var(--ink-mute);
}

.card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.75;
}

/* -------------------------------------------------------------------------
   10. Steps
   ------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(20px, 2.6vw, 32px);
  counter-reset: step;
}

@media (max-width: 1000px) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid var(--line-strong);
  counter-increment: step;
}

.step::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.step::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--accent);
  transform: translateY(-0.5px);
}

.step h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.step p {
  color: var(--ink-dim);
  font-size: 0.97rem;
}

/* -------------------------------------------------------------------------
   11. Split panel (trust)
   ------------------------------------------------------------------------- */
.panel {
  position: relative;
  padding: clamp(28px, 4vw, 56px);
  border: 1px solid var(--line);
  border-radius: clamp(var(--radius-lg), 3vw, 32px);
  background: radial-gradient(
      120% 120% at 0% 0%,
      rgba(55, 229, 182, 0.09),
      transparent 55%
    ),
    var(--surface);
  box-shadow: var(--shadow);
}

.panel__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 4vw, 60px);
  align-items: start;
}

.panel h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: 16px;
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checklist li {
  display: flex;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.checklist li:last-child {
  border-bottom: 0;
}

.checklist svg {
  width: 20px;
  height: 20px;
  flex: none;
  margin-top: 2px;
  color: var(--accent);
}

.checklist li.is-no svg {
  color: var(--danger);
}

.checklist strong {
  display: block;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.checklist span {
  display: block;
  margin-top: 3px;
  color: var(--ink-dim);
  font-size: 0.92rem;
}

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

/* -------------------------------------------------------------------------
   12. FAQ
   ------------------------------------------------------------------------- */
.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: block;
  position: relative;
  padding: 22px 44px 22px 4px;
  font-size: 1.06rem;
  font-weight: 580;
  letter-spacing: -0.02em;
  cursor: pointer;
  list-style: none;
  transition: color 0.16s ease;
}

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

.faq summary:hover {
  color: var(--accent);
}

.faq summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s ease;
  opacity: 0.6;
}

.faq details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.faq details p {
  max-width: 62ch;
  padding: 0 4px 24px;
  color: var(--ink-dim);
}

/* -------------------------------------------------------------------------
   13. Closing call-out
   ------------------------------------------------------------------------- */
.callout {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 5vw, 68px);
  border: 1px solid var(--line);
  border-radius: clamp(var(--radius-lg), 3vw, 32px);
  background: linear-gradient(150deg, #0d1218, #090b10 60%);
  text-align: center;
}

.callout::before {
  content: "";
  position: absolute;
  inset: -40% 20% auto;
  height: 320px;
  background: radial-gradient(
    closest-side,
    rgba(55, 229, 182, 0.22),
    transparent 70%
  );
  pointer-events: none;
}

.callout h2 {
  position: relative;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  margin-bottom: 16px;
}

.callout p {
  position: relative;
  max-width: 40rem;
  margin-inline: auto;
  color: var(--ink-dim);
}

.callout .hero__actions {
  position: relative;
  justify-content: center;
}

/* -------------------------------------------------------------------------
   14. Footer
   ------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding-block: clamp(48px, 6vw, 72px) 40px;
  font-size: 0.94rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 48px);
}

.site-footer h4 {
  margin-bottom: 14px;
  font-size: 0.76rem;
  font-weight: 640;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer a {
  color: var(--ink-dim);
}

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

.site-footer__about p {
  margin-top: 14px;
  max-width: 30rem;
  color: var(--ink-dim);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 32px;
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-mute);
  font-size: 0.86rem;
}

@media (max-width: 860px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__about {
    grid-column: 1 / -1;
  }
}

/* -------------------------------------------------------------------------
   15. Documents (privacy / terms)
   ------------------------------------------------------------------------- */
.doc-hero {
  padding-block: clamp(48px, 7vw, 88px) clamp(28px, 3vw, 40px);
  border-bottom: 1px solid var(--line);
  background: radial-gradient(
    90% 140% at 12% -20%,
    rgba(55, 229, 182, 0.12),
    transparent 60%
  );
}

.doc-hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  margin-bottom: 16px;
}

.doc-hero .lede {
  max-width: 44rem;
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 26px;
  color: var(--ink-mute);
  font-size: 0.86rem;
}

.doc-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  padding-block: clamp(40px, 5vw, 72px) clamp(64px, 8vw, 104px);
}

.toc {
  position: sticky;
  top: calc(var(--nav-h) + 28px);
  align-self: start;
}

.toc h2 {
  margin-bottom: 14px;
  font-size: 0.74rem;
  font-weight: 640;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
  border-left: 1px solid var(--line);
}

.toc li {
  counter-increment: toc;
}

.toc a {
  display: block;
  padding: 7px 0 7px 16px;
  margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--ink-mute);
  font-size: 0.88rem;
  line-height: 1.4;
}

.toc a::before {
  content: counter(toc) ". ";
  color: var(--ink-mute);
  opacity: 0.6;
}

.toc a:hover {
  color: var(--ink);
  border-left-color: var(--accent);
  text-decoration: none;
}

.prose {
  max-width: 68ch;
}

.prose h2 {
  margin-top: 52px;
  margin-bottom: 16px;
  padding-top: 8px;
  font-size: 1.44rem;
  letter-spacing: -0.03em;
}

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

.prose h3 {
  margin-top: 32px;
  margin-bottom: 10px;
  font-size: 1.06rem;
}

.prose p,
.prose ul,
.prose ol {
  color: var(--ink-dim);
  font-size: 1rem;
}

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

.prose ul,
.prose ol {
  margin: 16px 0;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prose li::marker {
  color: var(--accent);
}

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

code {
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 0.86em;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.note {
  margin: 28px 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius);
  background: rgba(55, 229, 182, 0.045);
}

.note h3 {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 640;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.note p,
.note li {
  color: var(--ink-dim);
  font-size: 0.95rem;
}

.note ul {
  margin: 10px 0 0;
}

@media (max-width: 900px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--line);
  }
}

/* -------------------------------------------------------------------------
   16. Status pages (OAuth callback, 404)
   ------------------------------------------------------------------------- */
.status-page {
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--nav-h) - 120px);
  padding-block: clamp(48px, 8vw, 96px);
}

.status-card {
  width: 100%;
  max-width: 620px;
  margin-inline: auto;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: clamp(var(--radius-lg), 3vw, 30px);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.status-card h1 {
  font-size: clamp(1.6rem, 3.4vw, 2.15rem);
  margin-bottom: 14px;
}

.status-card > p {
  color: var(--ink-dim);
  max-width: 44ch;
  margin-inline: auto;
}

.status-icon {
  width: 66px;
  height: 66px;
  display: grid;
  place-items: center;
  margin: 0 auto 24px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink-dim);
}

.status-icon svg {
  width: 30px;
  height: 30px;
  display: none;
}

.status-card[data-state="idle"] .icon-idle,
.status-card[data-state="success"] .icon-success,
.status-card[data-state="error"] .icon-error {
  display: block;
}

.status-card[data-state="success"] .status-icon {
  background: var(--accent-soft);
  border-color: rgba(55, 229, 182, 0.4);
  color: var(--accent);
}

.status-card[data-state="error"] .status-icon {
  background: var(--danger-soft);
  border-color: rgba(255, 122, 122, 0.4);
  color: var(--danger);
}

.status-detail {
  margin: 26px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.028);
  text-align: left;
}

.status-detail dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 18px;
  font-size: 0.88rem;
}

.status-detail dt {
  color: var(--ink-mute);
}

.status-detail dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  overflow-wrap: anywhere;
}

.status-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.status-foot {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-mute);
  font-size: 0.84rem;
}

/* -------------------------------------------------------------------------
   17. Motion
   ------------------------------------------------------------------------- */
/* Scoped to .js so the content is never hidden when scripting is unavailable. */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

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

/* -------------------------------------------------------------------------
   18. Print
   ------------------------------------------------------------------------- */
@media print {
  body {
    background: #fff;
    color: #000;
  }

  body::after,
  .site-header,
  .site-footer,
  .toc,
  .doc-hero {
    display: none !important;
  }

  .prose,
  .prose p,
  .prose li {
    color: #000;
    max-width: none;
  }
}