/* ==========================================================================
   AI Key Bridge — landing page
   Tokens first, then layout. No framework, no build step.
   Shape rules: pills for controls (999px), cards 18–20px, phone 44px,
   small chips 12–14px. Nothing else invents its own radius.
   ========================================================================== */

:root {
  --ink: #0a0b0d;
  --ink-2: #101217;
  --ink-3: #171a20;
  --line: #262a32;
  --line-soft: #1c2027;

  --text: #f5f3ee;
  --muted: #9ba1ac;
  --dim: #6e7480;

  --paper: #f5f2ea;
  --paper-2: #e7e2d5;
  --ink-text: #12141a;
  --muted-light: #5c6167;
  --line-paper: #d9d3c2;

  --accent: #cbf25c;
  --accent-soft: #edf7d2;
  --accent-dim: #a9cc4c;
  --danger: #e4664a;
  --warn: #e0a21b;

  --font: "Be Vietnam Pro", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter: clamp(20px, 5.5vw, 80px);
  --max: 1440px;
  --section-y: clamp(64px, 8vw, 104px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 68px;
}

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

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, figure, blockquote { margin: 0; }

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

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

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

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus-visible { transform: none; }

.i {
  display: block;
  width: 1em;
  height: 1em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.i--fill { fill: currentColor; stroke: none; }

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

/* ============================ Buttons ============================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.15;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
    border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.btn .i { font-size: 16px; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }

.btn--accent {
  background: var(--accent);
  color: var(--ink);
}
.btn--accent:hover { background: #d7fb76; }

.btn--light {
  background: var(--text);
  color: var(--ink);
}
.btn--light:hover { background: #fff; }

.btn--ghost {
  border-color: #333843;
  color: var(--text);
  font-weight: 500;
  padding: 14px 22px;
}
.btn--ghost:hover { border-color: #4a5160; background: rgba(255, 255, 255, 0.03); }

.btn--sm {
  padding: 11px 18px;
  font-size: 13px;
  gap: 8px;
}
.btn--sm .i { font-size: 14px; }

/* ============================ Nav ============================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 11, 13, 0.55);
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease),
    backdrop-filter 0.25s var(--ease);
}
.nav.is-scrolled {
  background: rgba(10, 11, 13, 0.88);
  border-bottom-color: var(--line-soft);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--nav-h);
  padding-block: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--ink);
  font-size: 19px;
}
.brand__name {
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 13.5px;
  color: var(--muted);
}
.nav__links a { transition: color 0.18s var(--ease); }
.nav__links a:hover,
.nav__links a.is-current { color: var(--text); }
.nav__cta-mobile { display: none; }

.nav__right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.version {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  white-space: nowrap;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.nav__burger {
  display: none;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  font-size: 19px;
  cursor: pointer;
}

/* ============================ Hero ============================ */

.hero {
  position: relative;
  padding-block: clamp(26px, 3.4vw, 46px) clamp(52px, 6vw, 84px);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(32px, 4vw, 56px);
  align-items: center;
}

.hero__copy { display: flex; flex-direction: column; align-items: flex-start; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow--dark { color: #7c7a68; }

.pulse {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.pulse::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0;
  animation: ping 2.8s var(--ease) infinite;
}
@keyframes ping {
  0% { transform: scale(0.6); opacity: 0.7; }
  70%, 100% { transform: scale(1.9); opacity: 0; }
}

.hero__title {
  font-size: clamp(38px, 5.2vw, 66px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.038em;
  padding-bottom: 0.06em;
}

.hero__sub {
  max-width: 470px;
  margin-top: 22px;
  font-size: clamp(15px, 1.2vw, 16.5px);
  line-height: 1.62;
  color: var(--muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: 24px;
  font-size: 12.5px;
  color: var(--dim);
}
.hero__trust li { display: inline-flex; align-items: center; gap: 7px; }
.hero__trust .i { font-size: 14px; color: #868d99; }

/* Phone mockup ---------------------------------------------------------- */

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  padding-block: 10px;
}

.hero__glow {
  position: absolute;
  z-index: 0;
  width: min(560px, 92%);
  aspect-ratio: 1;
  top: 4%;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle at 50% 50%, rgba(203, 242, 92, 0.2), rgba(203, 242, 92, 0) 66%);
  pointer-events: none;
}

.phone {
  position: relative;
  z-index: 1;
  width: clamp(236px, 24vw, 306px);
  margin: 0;
}
.phone__frame {
  position: relative;
  padding: 6px;
  border-radius: 46px;
  background: #22262d;
  border: 1.5px solid #343a43;
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.phone__shot {
  width: 100%;
  border-radius: 40px;
  background: var(--ink);
}

.chip {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 14px;
  background: #14171c;
  border: 1px solid #2e333c;
  box-shadow: 0 14px 34px -12px rgba(0, 0, 0, 0.85);
  font-size: 11.5px;
  line-height: 1.35;
  color: var(--muted);
}
.chip--flow {
  left: 0;
  top: 42%;
  width: 228px;
}
.chip--flow b {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
}
.chip--flow small { font-size: 10.5px; color: var(--dim); }
.chip__icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: none;
  border-radius: 50%;
  background: rgba(203, 242, 92, 0.12);
  color: var(--accent);
  font-size: 13px;
}
.chip--mic {
  left: 2%;
  bottom: 5%;
  padding: 9px 12px;
  border-radius: 12px;
  font-size: 11px;
  color: var(--text);
}
.chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(203, 242, 92, 0.12);
}

/* ============================ Sections ============================ */

.section {
  padding-block: var(--section-y);
  color: var(--text);
}
.section.dark { background: var(--ink); }

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

.section--flush { padding-top: 0; }

.head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: clamp(36px, 4.4vw, 52px);
}
.head--split {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}
.head--split > div { flex: 1 1 auto; min-width: 0; }
.head--center {
  align-items: center;
  text-align: center;
}
.head > .eyebrow { margin-bottom: 0; }
.head--split > div > .eyebrow { margin-bottom: 18px; }

.h2 {
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.032em;
  max-width: 22ch;
  padding-bottom: 0.04em;
}
.h2--dark { color: var(--ink-text); }

.h3 {
  font-size: clamp(19px, 1.6vw, 23px);
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: -0.022em;
}

.lede {
  max-width: 58ch;
  font-size: clamp(15px, 1.1vw, 16px);
  line-height: 1.66;
  color: var(--muted);
}
.paper .lede { color: var(--muted-light); }
.lede--center { margin-inline: auto; }

.head__aside {
  flex: 0 1 400px;
  max-width: 420px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--muted);
  padding-bottom: 4px;
}
.head__aside--dark { color: var(--muted-light); }

.mono { font-family: var(--mono); }

/* ============================ Compare ============================ */

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: stretch;
}

.compare__old {
  padding: 6px 10px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.compare__new {
  padding: 26px 28px 22px;
  border-radius: 20px;
  background: var(--ink);
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.compare__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
}
.compare__time {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #8c8a78;
  white-space: nowrap;
}
.compare__time--accent { color: var(--accent); }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tag--dark {
  border: 1px solid var(--line-paper);
  color: var(--muted-light);
}
.tag--accent {
  background: rgba(203, 242, 92, 0.14);
  border: 1px solid rgba(203, 242, 92, 0.38);
  color: var(--accent);
}

.list-x,
.list-check { display: flex; flex-direction: column; }
.list-x li,
.list-check li {
  position: relative;
  padding: 13px 0 13px 30px;
  font-size: 14.5px;
  line-height: 1.45;
  border-top: 1px solid var(--line-paper);
}
.list-x li { color: #4a4d4a; }
.list-x li::before {
  content: "×";
  position: absolute;
  left: 4px;
  top: 12px;
  font-size: 17px;
  line-height: 1.2;
  color: #a9a291;
}
.compare__new .list-x li,
.list-check li {
  border-top-color: #23262e;
  color: #d8dbe0;
}
.list-check li::before {
  content: "✓";
  position: absolute;
  left: 2px;
  top: 11px;
  font-size: 13px;
  color: var(--accent);
}
.list--last-no-border li:last-child { border-bottom: 0; }

.compare__note {
  margin-top: auto;
  padding-top: 18px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: #7f8a6b;
  border-top: 1px solid #23262e;
}

/* ============================ Steps ============================ */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}
.step {
  padding: 22px 26px 4px;
  border-right: 1px solid var(--line-soft);
}
.step:first-child { padding-left: 0; }
.step:last-child { border-right: 0; padding-right: 0; }
.step__num {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 14px;
}
.step__num span { color: var(--dim); }
.step__title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.step__desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 32ch;
}

/* ============================ Provisioning ============================ */

.provision {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  margin-top: clamp(44px, 5vw, 64px);
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.term {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #20242b;
  background: #0e1014;
}
.term__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 15px;
  border-bottom: 1px solid #1e222a;
  background: #12151a;
}
.term__title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.04em;
}
.term__title .i { font-size: 13px; }
.term__copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid #262b33;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10.5px;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.term__copy:hover { color: var(--accent); border-color: rgba(203, 242, 92, 0.45); }
.term__copy .i { font-size: 12px; }
.term__copy.is-copied { color: var(--accent); border-color: rgba(203, 242, 92, 0.45); }

.term__code {
  margin: 0;
  padding: 18px 18px 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.85;
  color: #c6ccd6;
  tab-size: 2;
}
.term__code .c { color: #5d6470; }
.term__code .p { color: var(--accent); }
.term__code .ok { color: var(--accent); }

.provision__copy p {
  margin-top: 18px;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--muted);
  max-width: 46ch;
}
.provision__copy .h3 { max-width: 24ch; }
.provision__copy .note {
  display: flex;
  gap: 10px;
  margin-top: 22px;
  padding: 13px 15px;
  border: 1px solid #2b2c22;
  border-radius: 12px;
  background: rgba(224, 162, 27, 0.05);
  color: #b8a878;
  font-size: 12.5px;
  line-height: 1.6;
}
.provision__copy .note .i {
  font-size: 15px;
  color: var(--warn);
  margin-top: 2px;
}

/* ============================ Screens ============================ */

.screens {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
  margin-top: 8px;
}
.screen-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
  text-align: center;
}
.phone--strip { width: clamp(186px, 19vw, 248px); }
.phone--strip .phone__frame { border-radius: 38px; padding: 5px; }
.phone--strip .phone__shot { border-radius: 33px; }

.screen-card figcaption { max-width: 30ch; }
.screen-card__num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  margin-bottom: 8px;
}
.screen-card h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.screen-card p {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted);
}

/* ============================ Features ============================ */

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
}
.feature {
  padding: 26px 34px 26px 0;
  border-top: 1px solid var(--line);
}
.feature__icon {
  font-size: 19px;
  color: var(--accent);
  margin-bottom: 18px;
  stroke-width: 1.6;
}
.feature h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.feature p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 34ch;
}

/* ============================ Open source ============================ */

.oss {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 22px;
  align-items: stretch;
}

.license {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 26px 28px 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--ink-2);
}
.license__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
.license__name {
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent);
}
.license p {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 38ch;
}
.license__meta {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  width: 100%;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--dim);
}

.contrib { display: flex; flex-direction: column; }
.contrib li {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}
.contrib li:first-child { border-top: 0; padding-top: 4px; }
.contrib li:last-child { padding-bottom: 0; }
.contrib__num {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--dim);
  padding-top: 3px;
  flex: none;
  width: 22px;
}
.contrib h3 {
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 5px;
  letter-spacing: -0.01em;
}
.contrib p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 48ch;
}

.oss__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}
.oss__cta .btn--ghost {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.03em;
}
.oss__url {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
}

/* ============================ OEM table ============================ */

.table-scroll {
  overflow-x: auto;
  border-top: 1px solid var(--line-paper);
  -webkit-overflow-scrolling: touch;
}
.oem-table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-size: 13.5px;
  text-align: left;
}
.oem-table th,
.oem-table td {
  padding: 15px 18px 15px 0;
  border-bottom: 1px solid var(--line-paper);
  vertical-align: middle;
  font-weight: 400;
}
.oem-table thead th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8c8a78;
  padding-block: 12px;
}
.oem-table tbody th { text-align: left; }
.oem-table tbody tr:last-child th,
.oem-table tbody tr:last-child td { border-bottom: 0; }
.oem-table tbody tr { transition: background-color 0.18s var(--ease); }
.oem-table tbody tr:hover { background: rgba(18, 20, 26, 0.03); }
.oem-table td.mono {
  font-family: var(--mono);
  font-size: 11.5px;
  color: #40433f;
  white-space: nowrap;
}
.oem__brand {
  display: block;
  font-weight: 600;
  color: var(--ink-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.oem__rom {
  display: block;
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: #8c8a78;
}
.oem__note { font-size: 12.5px; color: var(--muted-light); }

.pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border: 1px solid #c3bcaa;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #6b6a5c;
  white-space: nowrap;
}
.pill--solid {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--accent);
}

.footnote {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 10.5px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: #8c8a78;
  max-width: 70ch;
}

/* ============================ Privacy + FAQ ============================ */

.privacy {
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.privacy .head { margin-bottom: 34px; }

.privacy-list { display: flex; flex-direction: column; }
.privacy-list li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line-paper);
}
.privacy-list__icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 9px;
  border: 1px solid var(--line-paper);
  color: #55584d;
  font-size: 15px;
  margin-top: 2px;
}
.privacy-list h3 {
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.privacy-list p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted-light);
  max-width: 44ch;
}

.faq { border-top: 1px solid var(--line-paper); }
.faq__item { border-bottom: 1px solid var(--line-paper); }
.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 18px 0;
  border: 0;
  background: none;
  color: var(--ink-text);
  text-align: left;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.4;
  cursor: pointer;
}
.faq__q .i {
  font-size: 16px;
  color: #8c8a78;
  transition: transform 0.28s var(--ease), color 0.2s var(--ease);
}
.faq__q:hover .i { color: var(--ink-text); }
.faq__q[aria-expanded="true"] .i { transform: rotate(180deg); color: var(--ink-text); }

.faq__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.34s var(--ease);
}
.faq__a > div { overflow: hidden; }
.faq__item.is-open .faq__a { grid-template-rows: 1fr; }
.faq__a p {
  padding: 0 40px 20px 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--muted-light);
  max-width: 56ch;
}

/* ============================ Final CTA ============================ */

.final {
  position: relative;
  padding-block: clamp(72px, 9vw, 120px);
  background:
    radial-gradient(ellipse 70% 90% at 50% 115%, rgba(203, 242, 92, 0.13), rgba(203, 242, 92, 0) 70%),
    var(--ink);
  border-top: 1px solid var(--line-soft);
  text-align: center;
}
.final__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.final .eyebrow { margin-bottom: 18px; }
.final__title {
  font-size: clamp(31px, 4.4vw, 58px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.038em;
  padding-bottom: 0.04em;
}
.final__sub {
  max-width: 52ch;
  margin-top: 20px;
  font-size: clamp(14.5px, 1.1vw, 16px);
  line-height: 1.6;
  color: var(--muted);
}
.final__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
}
.final__meta {
  margin-top: 26px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* ============================ Document pages ============================ */

.doc {
  padding-block: clamp(44px, 6vw, 84px);
  background: var(--ink);
}
.doc__inner { max-width: 760px; }
.doc__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 34px;
  font-size: 13px;
  color: var(--muted);
}
.doc__back:hover { color: var(--text); }
.doc__title {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.032em;
  margin-bottom: 14px;
}
.doc__meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 36px;
}
.prose { color: var(--muted); font-size: 15px; line-height: 1.75; }
.prose > * + * { margin-top: 18px; }
.prose h2 {
  color: var(--text);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-top: 36px;
}
.prose ul { list-style: none; padding: 0; }
.prose ul li {
  position: relative;
  padding-left: 20px;
  margin-top: 10px;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--text); font-weight: 600; }
.prose code {
  font-family: var(--mono);
  font-size: 0.86em;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--ink-3);
  color: var(--accent-soft);
}
.prose .callout {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--ink-2);
  font-size: 14px;
  line-height: 1.65;
}

/* ============================ Footer ============================ */

.footer {
  padding-block: 48px 34px;
  border-top: 1px solid var(--line-soft);
  background: var(--ink);
  font-size: 13px;
}
.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 0.7fr));
  gap: 32px;
}
.footer__brand { max-width: 320px; }
.footer__brand p {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--dim);
}
.footer__col { display: flex; flex-direction: column; gap: 9px; }
.footer__col h2 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 4px;
  font-weight: 400;
}
.footer__col a {
  font-size: 12.5px;
  color: var(--muted);
  width: fit-content;
  transition: color 0.18s var(--ease);
}
.footer__col a:hover { color: var(--text); }

.footer__bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}
.footer__bottom p {
  max-width: 78ch;
  font-size: 10.5px;
  line-height: 1.7;
  color: #565b64;
}
.footer__copy {
  font-family: var(--mono);
  font-size: 10.5px;
  color: #565b64;
  white-space: nowrap;
}

/* ============================ Motion ============================ */

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
[data-delay="1"] { transition-delay: 0.07s; }
[data-delay="2"] { transition-delay: 0.14s; }
[data-delay="3"] { transition-delay: 0.21s; }
[data-delay="4"] { transition-delay: 0.28s; }

@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;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ============================ Responsive ============================ */

@media (max-width: 1080px) {
  .nav__links { gap: 22px; }
  .head--split { flex-direction: column; align-items: flex-start; gap: 20px; }
  .head__aside { flex: none; max-width: 52ch; padding-bottom: 0; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step { padding-block: 20px; }
  .step:nth-child(2) { border-right: 0; }
  .step:nth-child(odd) { padding-left: 0; }
  .step:nth-child(even) { padding-right: 0; }
  .step:nth-child(3),
  .step:nth-child(4) { border-top: 1px solid var(--line-soft); }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature { padding-right: 28px; }
  .oss { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; max-width: 46ch; }
  .oss__url { margin-left: 0; width: 100%; }
}

@media (max-width: 900px) {
  .nav__links {
    position: fixed;
    inset: calc(var(--nav-h) + 6px) var(--gutter) auto var(--gutter);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #0e1015;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.9);
    font-size: 15px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
  }
  .nav__links.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__links a { padding: 11px 12px; border-radius: 10px; }
  .nav__links a:hover { background: rgba(255, 255, 255, 0.04); }
  .nav__cta-mobile {
    display: block;
    margin-top: 6px;
    background: var(--accent);
    color: var(--ink) !important;
    font-weight: 600;
    text-align: center;
    padding: 12px !important;
  }
  .nav__burger { display: grid; }
  .nav__right .btn--light { display: none; }

  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { margin-top: 4px; }
  .hero__sub { max-width: 54ch; }
  .hero__glow { width: min(430px, 90%); }

  .hero__visual { flex-direction: column; align-items: center; }
  .chip { position: static; width: auto; max-width: 300px; }
  .chip--flow { margin-top: 20px; order: 2; }
  .chip--mic { order: 3; margin-top: 10px; bottom: auto; left: auto; }
  .compare { grid-template-columns: 1fr; gap: 32px; }
  .compare__old { padding-right: 0; }
  .provision { grid-template-columns: 1fr; gap: 32px; }
  .provision__copy p { max-width: 62ch; }
  .screens {
    grid-template-columns: repeat(3, 186px);
    justify-content: flex-start;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 12px;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
  }
  .screen-card { scroll-snap-align: center; }
  .privacy { grid-template-columns: 1fr; gap: 44px; }
}

@media (max-width: 720px) {
  .version { display: none; }
  .hero { padding-top: 20px; }
  .hero__title { font-size: clamp(36px, 9.6vw, 48px); }
  .hero__trust { gap: 10px 18px; }
  .hero__cta .btn { flex: 1 1 auto; }
  .steps { grid-template-columns: 1fr; }
  .step { border-right: 0; border-top: 1px solid var(--line-soft); padding-block: 18px; padding-inline: 0; }
  .step:first-child { border-top: 0; }
  .step__desc { max-width: none; }
  .features { grid-template-columns: 1fr; }
  .feature { padding-block: 22px; padding-right: 0; }
  .feature p { max-width: 52ch; }
  .term__code { font-size: 10.5px; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 30px 22px; }
  .footer__brand { grid-column: 1 / -1; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 14px; }
  .privacy .head { margin-bottom: 26px; }
  .faq__a p { padding-right: 12px; }
  .final__cta .btn { flex: 1 1 auto; }
}

@media (max-width: 460px) {
  .brand__name { font-size: 14.5px; }
  .nav__right { gap: 8px; }
  .hero__cta { flex-direction: column; align-items: stretch; width: 100%; }
  .hero__cta .btn { width: 100%; }
  .phone { width: 250px; }
  .phone--strip { width: 168px; }
  .screens { grid-template-columns: repeat(3, 168px); }
  .compare__new { padding: 22px 20px 18px; }
  .contrib li { gap: 12px; }
  .oss__cta { flex-direction: column; align-items: stretch; }
  .oss__cta .btn { width: 100%; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__brand { grid-column: auto; }
  .term__title { font-size: 10px; }
}