/* NUA product site. Tokens copied from ios/Interpreter/App/Theme.swift (light only). */
:root {
  --bg: #ffffff;
  --surface: #f5f5f7;
  --raised: #ffffff;
  --text: #26262b;
  --text-2: #71717a;
  --selected: #e7e7ec;
  --accent: #fb3c39;
  --accent-text: #e5342f;
  --badge: rgba(251, 60, 57, 0.12);
  --line: #ececf0;
  --cta: linear-gradient(135deg, #ff5a1e 0%, #f8324e 62%, #f0276a 100%);
  --r-sm: 8px;
  --r-md: 12px;
  --r-cta: 14px;
  --r-lg: 16px;
  --r-xl: 24px;
  --shadow: 0 3px 10px rgba(0, 0, 0, 0.12);
  --shadow-soft: 0 18px 50px -20px rgba(38, 38, 43, 0.28);
  --font: "Noto Sans", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", Roboto, sans-serif;
  --max: 1160px;
  --nav-h: 66px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-x: clip;
}
a { color: inherit; }
img, svg, canvas { display: block; }
button { font: inherit; color: inherit; }
h1, h2, h3 { font-weight: 700; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--text); color: #fff; padding: 8px 14px; border-radius: var(--r-sm); }
.skip:focus { left: 16px; }

/* ---------------------------------------------------------------- Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  height: var(--nav-h);
  padding: 0 max(16px, calc((100vw - var(--max)) / 2));
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: saturate(1.6) blur(16px);
  -webkit-backdrop-filter: saturate(1.6) blur(16px);
  border-bottom: 1px solid rgba(38, 38, 43, 0.06);
}
.wordmark { font-weight: 700; letter-spacing: 0.24em; color: var(--accent-text); text-decoration: none; font-size: 15px; }
.nav-links { display: flex; gap: 24px; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--text-2); font-size: 14px; font-weight: 500; transition: color 0.15s; }
.nav-links a:hover, .nav-links a.on { color: var(--text); }

/* ---------------------------------------------------------------- Buttons & badges */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 52px; padding: 0 26px; border-radius: var(--r-cta);
  font-weight: 700; font-size: 16px; text-decoration: none; border: 0; cursor: pointer; white-space: nowrap;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background-color 0.2s ease, opacity 0.2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--cta); color: #fff; box-shadow: 0 10px 24px -12px rgba(248, 50, 78, 0.65); }
.btn-primary:hover { box-shadow: 0 14px 30px -12px rgba(248, 50, 78, 0.75); }
.btn-ghost { background: var(--surface); color: var(--text); }
.btn-ghost:hover { background: var(--selected); }
.btn-small { height: 40px; padding: 0 16px; font-size: 14px; border-radius: var(--r-md); }
.btn:disabled { opacity: 0.42; cursor: not-allowed; transform: none; box-shadow: none; }
.badge {
  display: inline-flex; align-items: center; height: 20px; padding: 0 8px; border-radius: 999px;
  font-size: 11px; font-weight: 700; color: var(--accent-text); background: var(--badge); white-space: nowrap;
}

/* ---------------------------------------------------------------- Shared section type */
section { position: relative; }
.eyebrow { margin: 0 0 16px; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-text); }
h1 { margin: 0; font-size: clamp(40px, 4.6vw, 62px); line-height: 1.04; letter-spacing: -0.035em; }
.h1-accent { background: var(--cta); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { margin: 0; font-size: clamp(32px, 4vw, 50px); line-height: 1.08; letter-spacing: -0.03em; }
h3 { margin: 0; font-size: 18px; letter-spacing: -0.01em; line-height: 1.3; }
.section-head { max-width: 760px; margin: 0 auto; text-align: center; }
.section-lede { margin: 20px auto 0; max-width: 640px; font-size: 18px; color: var(--text-2); }

/* ---------------------------------------------------------------- Hero */
.hero {
  max-width: var(--max); margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr); align-items: center; gap: 32px;
  min-height: calc(100vh - var(--nav-h)); min-height: calc(100svh - var(--nav-h));
  padding: 40px 16px 56px;
}
.lede { margin: 24px 0 0; max-width: 31em; font-size: 19px; color: var(--text-2); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.cta-row.center { justify-content: center; }
.hero-meta { display: flex; align-items: baseline; gap: 8px; margin: 24px 0 0; font-size: 13px; color: var(--text-2); }
.hero-meta .dot { flex: none; position: relative; top: -1px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--badge); }
.hero-stage { position: relative; height: min(720px, calc(100vh - var(--nav-h) - 40px)); min-height: 560px; }
.hero-stage::before {
  content: ""; position: absolute; left: 50%; top: 48%; width: 120%; aspect-ratio: 1; transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(251, 60, 57, 0.13), rgba(251, 60, 57, 0.04) 55%, rgba(251, 60, 57, 0) 75%);
  pointer-events: none;
}
.stage-note { position: absolute; right: 0; bottom: 0; margin: 0; font-size: 12px; color: var(--text-2); }

.float-card {
  position: absolute; z-index: 5; max-width: 212px; padding: 12px 16px; border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.94); box-shadow: var(--shadow-soft); border: 1px solid rgba(38, 38, 43, 0.05);
  opacity: 0; transform: translateY(8px) scale(0.98); transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
}
.float-card.show { opacity: 1; transform: none; }
.float-card.nua { border-color: rgba(251, 60, 57, 0.28); }
.fc-label { display: block; font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-2); margin-bottom: 4px; }
.float-card.nua .fc-label { color: var(--accent-text); }
.fc-text { display: block; font-size: 15px; font-weight: 500; line-height: 1.4; }
#hero-phone { left: 9%; }
.fc-top { top: 6%; right: -9%; }
.fc-bottom { bottom: 18%; left: -6%; }

.ground-shadow {
  position: absolute; left: 50%; bottom: 3%; width: 46%; height: 34px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(38, 38, 43, 0.26), rgba(38, 38, 43, 0));
  filter: blur(4px); pointer-events: none; z-index: 0;
}
.demo-stage .ground-shadow { bottom: -1%; }

/* ---------------------------------------------------------------- 3D device */
.stage-3d { position: absolute; inset: 0; z-index: 1; perspective: 1900px; perspective-origin: 50% 42%; }
.device {
  --depth: 34px;
  position: absolute; left: 50%; top: 50%;
  width: 412px; height: 866px; margin: -433px 0 0 -206px;
  transform: scale(var(--scale, 0.7));
  transform-style: preserve-3d;
}
.device-body {
  position: absolute; inset: 0; transform-style: preserve-3d;
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) rotateZ(var(--rz, 0deg));
  will-change: transform;
}
.slab {
  position: absolute; inset: 0; border-radius: 66px;
  transform: translateZ(calc((var(--p) - 0.5) * var(--depth)));
  background: linear-gradient(135deg, #f1f1f4 0%, #cfd0d6 38%, #f6f6f8 55%, #b9bac1 100%);
}
.slab.with-buttons::before, .slab.with-buttons::after {
  content: ""; position: absolute; width: 6px; border-radius: 3px; background: #c4c5cb;
}
.slab.with-buttons::before { left: -3px; top: 214px; height: 62px; box-shadow: 0 78px 0 #c4c5cb; }
.slab.with-buttons::after { right: -3px; top: 260px; height: 100px; }
.device-back {
  position: absolute; inset: 0; border-radius: 66px;
  transform: translateZ(calc(var(--depth) / -2 - 0.5px)) rotateY(180deg);
  background: linear-gradient(160deg, #f6f6f8 0%, #e1e1e6 55%, #ececf0 100%);
  box-shadow: inset 0 0 0 3px #c9cad0;
}
.camera {
  position: absolute; left: 22px; top: 22px; width: 150px; height: 150px; border-radius: 40px;
  background: linear-gradient(145deg, #eeeef1, #d8d8de); box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.12);
}
.camera i { position: absolute; width: 52px; height: 52px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #4a4a55, #111114 60%); box-shadow: 0 0 0 5px #d3d3d9; }
.camera i:nth-child(1) { left: 16px; top: 16px; }
.camera i:nth-child(2) { left: 16px; top: 82px; }
.camera i:nth-child(3) { left: 84px; top: 49px; }
.camera b { position: absolute; right: 18px; top: 18px; width: 14px; height: 14px; border-radius: 50%; background: #f3efe6; }
.device-front {
  position: absolute; inset: 0; border-radius: 66px; padding: 11px;
  transform: translateZ(calc(var(--depth) / 2 + 0.5px));
  background: #151518;
  box-shadow: inset 0 0 0 3px #d4d5da, inset 0 0 0 4px #9fa0a6;
}
.screen {
  position: relative; width: 390px; height: 844px; border-radius: 55px; overflow: hidden;
  background: #fff; font-family: var(--font); color: var(--text); line-height: 1.25; text-align: left;
  -webkit-user-select: none; user-select: none;
}
.glare {
  position: absolute; inset: 0; z-index: 80; pointer-events: none;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0) 36%, rgba(255, 255, 255, 0.24) 47%, rgba(255, 255, 255, 0.06) 53%, rgba(255, 255, 255, 0) 62%);
  background-size: 320% 100%;
  background-position: var(--gx, 50%) 0;
}
.statusbar {
  position: absolute; top: 0; left: 0; right: 0; height: 54px; z-index: 70;
  display: flex; align-items: center; justify-content: space-between; padding: 6px 30px 0 46px;
  font-size: 17px; font-weight: 700; letter-spacing: -0.01em;
}
.sb-icons { display: flex; align-items: center; gap: 6px; }
.sb-icons svg { height: 12px; width: auto; }
.sb-battery { position: relative; width: 26px; height: 12.5px; border-radius: 4px; border: 1.3px solid rgba(38, 38, 43, 0.4); padding: 1.5px; }
.sb-battery::after { content: ""; position: absolute; right: -4px; top: 3.5px; width: 2px; height: 4px; border-radius: 0 1px 1px 0; background: rgba(38, 38, 43, 0.4); }
.sb-battery i { display: block; width: 80%; height: 100%; border-radius: 2px; background: var(--text); }
.island { position: absolute; top: 11px; left: 50%; width: 124px; height: 36px; margin-left: -62px; border-radius: 20px; background: #000; z-index: 75; }
.home-indicator { position: absolute; bottom: 8px; left: 50%; width: 138px; height: 5px; margin-left: -69px; border-radius: 3px; background: var(--text); z-index: 75; }

/* ---------------------------------------------------------------- NUA app screen (OrbHomeView.autoBody) */
.app {
  position: absolute; top: 54px; left: 0; right: 0; bottom: 34px;
  display: flex; flex-direction: column; gap: 10px; padding: 4px 16px 4px;
}
.half { position: relative; flex: 1 1 0; min-height: 0; border-radius: var(--r-xl); overflow: hidden; background: var(--surface); }
.half-them { transform: rotate(180deg); }
.half-bg { position: absolute; inset: 0; width: 100%; height: 100%; }
.half-content {
  position: relative; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; padding: 16px; text-align: center;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; border: 0; border-radius: 999px;
  background: rgba(255, 255, 255, 0.9); font-size: 15px; font-weight: 700; cursor: pointer;
  transition: transform 0.12s ease;
}
.chip:active { transform: scale(0.97); }
.chip:disabled { cursor: default; transform: none; }
.chip .badge { height: auto; padding: 2px 6px; font-size: 10px; }
.chev svg { width: 12px; height: 12px; color: var(--text-2); }
.half-title { font-size: 17px; font-weight: 700; }
.half-sub { font-size: 13px; color: var(--text-2); min-height: 16px; }
.orb-block { flex: none; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.orb-wrap { position: relative; width: 190px; height: 170px; }
canvas.orb { position: absolute; left: 50%; top: 50%; width: 260px; height: 260px; transform: translate(-50%, -50%); pointer-events: none; }
.orb-wrap.pressed canvas.orb { animation: orb-press 0.32s ease; }
@keyframes orb-press { 40% { transform: translate(-50%, -50%) scale(0.95); } }
.orb-mute { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); color: var(--text-2); }
.orb-mute svg { width: 36px; height: 36px; }
.orb-hit {
  position: absolute; left: 50%; top: 50%; width: 150px; height: 150px; transform: translate(-50%, -50%);
  border: 0; border-radius: 50%; background: transparent; cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.status-title { font-size: 16px; font-weight: 700; min-height: 22px; }
.direction { display: flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500; color: var(--text-2); min-height: 22px; }
.direction .swap {
  display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 22px; border: 0; border-radius: 999px;
  background: var(--badge); color: var(--accent-text); cursor: pointer;
}
.direction .swap svg { width: 12px; height: 12px; }
.bottom-row { flex: none; display: flex; align-items: center; gap: 10px; }
.circle {
  flex: none; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--raised);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12); display: grid; place-items: center; cursor: default;
}
.circle svg { width: 20px; height: 20px; }
.controls { flex: 1; min-width: 0; min-height: 64px; display: flex; align-items: center; }
.idle-controls { width: 100%; display: flex; flex-direction: column; gap: 4px; }
.segmented { display: flex; height: 36px; padding: 2px; border-radius: 9px; background: rgba(118, 118, 128, 0.12); }
.segmented button {
  flex: 1; border: 0; border-radius: 7px; background: transparent; font-size: 13px; font-weight: 500; cursor: pointer;
  transition: background-color 0.2s, box-shadow 0.2s;
}
.segmented button.on { background: #fff; font-weight: 700; box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12), 0 3px 1px rgba(0, 0, 0, 0.04); }
.seg-hint { font-size: 10px; color: var(--text-2); text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.run-controls { width: 100%; display: flex; gap: 12px; }
.pill-btn {
  flex: 1; height: 64px; border: 0; border-radius: 999px; background: var(--raised);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 700; cursor: pointer;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.12); transition: transform 0.12s ease;
}
.pill-btn:active { transform: scale(0.97); }
.pill-btn svg, .pill-btn .ic svg { width: 15px; height: 15px; }
.pill-btn .ic { display: inline-flex; }
.pill-btn.stop { color: var(--accent-text); box-shadow: inset 0 0 0 1.5px var(--accent), 0 3px 10px rgba(0, 0, 0, 0.12); }
.foot-note { flex: none; font-size: 11px; color: var(--text-2); text-align: center; }

/* Light passing from the speaker's half, through the orb, to the listener's half */
.pass {
  position: absolute; left: 50%; top: 0; width: 340px; height: 340px; margin: -170px 0 0 -170px; z-index: 20;
  border-radius: 50%; pointer-events: none; opacity: 0;
  background: radial-gradient(closest-side, rgba(255, 90, 30, 0.42), rgba(248, 50, 78, 0.18) 45%, rgba(240, 39, 106, 0) 100%);
  mix-blend-mode: multiply;
}
.pass.up { animation: pass-up 1.15s cubic-bezier(0.45, 0, 0.25, 1) forwards; }
.pass.down { animation: pass-down 1.15s cubic-bezier(0.45, 0, 0.25, 1) forwards; }
@keyframes pass-up {
  0% { top: 76%; opacity: 0; transform: scale(0.6); }
  25% { opacity: 1; }
  50% { top: 40%; transform: scale(0.9); }
  85% { opacity: 0.7; }
  100% { top: 16%; opacity: 0; transform: scale(1.2); }
}
@keyframes pass-down {
  0% { top: 16%; opacity: 0; transform: scale(0.6); }
  25% { opacity: 1; }
  50% { top: 40%; transform: scale(0.9); }
  85% { opacity: 0.7; }
  100% { top: 76%; opacity: 0; transform: scale(1.2); }
}

/* Language picker sheet (LanguagePickerSheet) */
.sheet-scrim { position: absolute; inset: -54px 0 -34px; z-index: 85; background: rgba(0, 0, 0, 0.22); opacity: 0; transition: opacity 0.25s; }
.sheet {
  position: absolute; left: 0; right: 0; top: 4px; bottom: -34px; z-index: 90;
  display: flex; flex-direction: column; background: #f2f2f7; border-radius: 14px 14px 0 0;
  transform: translateY(102%); transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.12);
}
.app.sheet-open .sheet { transform: none; }
.app.sheet-open .sheet-scrim { opacity: 1; }
.sheet-grabber { width: 36px; height: 5px; border-radius: 3px; background: rgba(60, 60, 67, 0.3); margin: 6px auto 0; }
.sheet-bar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 8px 16px 6px; }
.sheet-close { justify-self: start; border: 0; background: none; padding: 4px 0; font-size: 17px; color: #007aff; cursor: pointer; }
.sheet-title { font-size: 17px; font-weight: 700; }
.sheet-search {
  display: flex; align-items: center; gap: 6px; margin: 4px 16px 10px; height: 36px; padding: 0 10px; border-radius: 10px;
  background: rgba(118, 118, 128, 0.12); color: var(--text-2);
}
.sheet-search svg { width: 16px; height: 16px; flex: none; }
.sheet-search input { flex: 1; min-width: 0; border: 0; background: transparent; font: inherit; font-size: 16px; color: var(--text); outline: none; }
.sheet-search input::-webkit-search-cancel-button { -webkit-appearance: none; }
.sheet-list { flex: 1; overflow-y: auto; padding: 0 16px 24px; overscroll-behavior: contain; }
.lang-row {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 16px; border: 0; background: #fff; text-align: left; cursor: pointer;
  border-bottom: 0.5px solid #e2e2e7;
}
.lang-row:first-child { border-radius: 12px 12px 0 0; }
.lang-row:nth-last-child(2) { border-radius: 0 0 12px 12px; border-bottom: 0; }
.lang-row:active { background: #e9e9ee; }
.lr-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.lr-name { font-size: 16px; font-weight: 700; }
.lr-name em { font-style: normal; font-size: 11px; color: var(--text-2); margin-left: 6px; }
.lr-native { font-size: 13px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lr-other { font-size: 10px; font-weight: 500; color: var(--text-2); white-space: nowrap; }
.lang-row .badge { height: auto; padding: 2px 6px; font-size: 10px; }
.lr-check { width: 16px; color: var(--accent); }
.lr-check svg { width: 16px; height: 16px; }
.sheet-foot { margin: 10px 4px 0; font-size: 12px; line-height: 1.45; color: var(--text-2); }
.sheet-empty { margin: 40px 0; text-align: center; font-size: 14px; color: var(--text-2); }

/* ---------------------------------------------------------------- One phone, two voices */
.how { height: 330vh; }
.how-sticky {
  position: sticky; top: var(--nav-h); height: calc(100vh - var(--nav-h)); height: calc(100svh - var(--nav-h));
  max-width: var(--max); margin: 0 auto; padding: 0 16px;
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); align-items: center; gap: 40px;
}
.how-copy h2 { font-size: clamp(28px, 3vw, 40px); }
.how-steps { list-style: none; margin: 32px 0 0; padding: 0; counter-reset: step; }
.how-steps li {
  position: relative; padding: 12px 0 12px 22px; border-left: 2px solid var(--selected);
  opacity: 0.4; transition: opacity 0.35s ease, border-color 0.35s ease;
}
.how-steps li.active { opacity: 1; border-color: var(--accent); }
.how-steps li.seen { opacity: 0.72; }
.how-steps p { margin: 6px 0 0; font-size: 15px; color: var(--text-2); max-width: 30em; }
.how-stage { position: relative; height: 100%; }
.table {
  position: absolute; inset: 4% 0;
  background: radial-gradient(ellipse 58% 50% at 50% 52%, #f5f5f7 0%, #f5f5f7 62%, rgba(245, 245, 247, 0) 100%);
}
.seat {
  position: absolute; left: 50%; z-index: 4; transform: translateX(-50%); white-space: nowrap;
  padding: 8px 14px; border-radius: 999px; background: #fff; box-shadow: var(--shadow-soft);
  font-size: 13px; color: var(--text-2); opacity: 0; transition: opacity 0.4s ease, transform 0.4s ease;
}
.seat b { color: var(--text); margin-right: 4px; }
.seat-them { top: 7%; }
.seat-you { bottom: 7%; }
.how-stage.seats .seat { opacity: 1; }

/* ---------------------------------------------------------------- Meaning */
.meaning { padding: 128px 16px 120px; }
.voice-compare { max-width: 880px; margin: 56px auto 0; padding: 28px 32px 22px; border-radius: var(--r-xl); background: var(--surface); }
.vc-row { display: grid; grid-template-columns: 130px minmax(0, 1fr); align-items: center; gap: 20px; }
.vc-row + .vc-row { margin-top: 10px; }
.vc-label { font-size: 13px; font-weight: 700; color: var(--text-2); }
.vc-accent { color: var(--accent-text); }
.vc-wave { width: 100%; height: 64px; }
.voice-compare figcaption { margin-top: 14px; font-size: 13px; color: var(--text-2); }
.feature-grid { max-width: var(--max); margin: 40px auto 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.feature { padding: 24px; border-radius: var(--r-lg); border: 1px solid var(--line); background: #fff; }
.f-icon { display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 18px; border-radius: var(--r-md); background: var(--badge); color: var(--accent-text); }
.f-icon svg { width: 22px; height: 22px; }
.feature p { margin: 8px 0 0; font-size: 15px; color: var(--text-2); }
.honest-note { max-width: 640px; margin: 28px auto 0; text-align: center; font-size: 14px; color: var(--text-2); }

/* ---------------------------------------------------------------- Demo */
.demo { padding: 120px 16px; background: var(--surface); }
.demo-flag { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; margin: 18px 0 0; font-size: 14px; color: var(--text-2); }
.demo-grid { max-width: var(--max); margin: 48px auto 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.demo-stage { position: sticky; top: calc(var(--nav-h) + 16px); height: min(820px, calc(100vh - var(--nav-h) - 32px)); min-height: 600px; }
.demo-panel { display: flex; flex-direction: column; gap: 16px; }
.demo-steps { list-style: none; margin: 0; padding: 6px 24px; border-radius: var(--r-xl); background: #fff; }
.ds { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.ds:last-child { border-bottom: 0; }
.ds p { margin: 4px 0 0; font-size: 14px; color: var(--text-2); }
.ds-num {
  display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; margin-top: -2px;
  background: var(--selected); font-size: 13px; font-weight: 700; color: var(--text-2); transition: background 0.25s, color 0.25s;
}
.ds.active .ds-num { background: var(--cta); color: #fff; }
.ds.done .ds-num { background: var(--badge); color: var(--accent-text); }
.talk-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.talk-buttons .btn-ghost { background: var(--surface); }
.talk-hint { margin: 10px 0 0; font-size: 13px; color: var(--text-2); }
.talk-card, .state-card, .transcript-card { padding: 20px 24px; border-radius: var(--r-xl); background: #fff; }
.sc-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.sc-kicker { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-2); }
.sc-dir, .sc-tag { font-size: 12px; font-weight: 500; color: var(--text-2); }
.state-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.state-list li { display: flex; flex-direction: column; padding: 8px 12px; border-radius: var(--r-md); opacity: 0.5; transition: opacity 0.25s, background-color 0.25s; }
.state-list li b { font-size: 14px; }
.state-list li span { font-size: 12.5px; color: var(--text-2); line-height: 1.4; }
.state-list li.active { opacity: 1; background: var(--badge); }
.state-list li.active b { color: var(--accent-text); }
.transcript { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; max-height: 260px; overflow-y: auto; }
.transcript li { padding: 10px 14px; border-radius: var(--r-md); background: var(--surface); animation: t-in 0.3s ease; }
.transcript li.nua { background: #fff; box-shadow: inset 3px 0 0 var(--accent), 0 0 0 1px var(--line); }
.transcript .t-who { display: block; font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-2); margin-bottom: 2px; }
.transcript li.nua .t-who { color: var(--accent-text); }
.transcript .t-text { font-size: 15px; }
.transcript li.t-empty { background: none; padding: 4px 0; font-size: 13px; color: var(--text-2); animation: none; }
@keyframes t-in { from { opacity: 0; transform: translateY(4px); } }
.mode-note { margin: 4px 4px 0; font-size: 13px; color: var(--text-2); }
.mode-note b { color: var(--text); }

/* ---------------------------------------------------------------- Languages */
.languages { padding: 128px 16px 112px; }
.lang-grid { max-width: var(--max); margin: 48px auto 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 12px; }
.lang-card { padding: 16px 18px; border-radius: var(--r-lg); border: 1px solid var(--line); background: #fff; }
.lc-top { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin-bottom: 12px; }
.lc-top .badge { padding: 0 7px; font-size: 10.5px; }
.lc-flag { width: 30px; height: 21px; border-radius: 5px; box-shadow: 0 0 0 1px rgba(38, 38, 43, 0.08); }
.lc-name { font-size: 17px; font-weight: 700; }
.lc-name em { font-style: normal; font-size: 11px; font-weight: 700; color: var(--text-2); margin-left: 6px; }
.lc-native { font-size: 14px; color: var(--text-2); }
.lang-note { max-width: 680px; margin: 28px auto 0; text-align: center; font-size: 14px; color: var(--text-2); }

/* ---------------------------------------------------------------- FAQ */
.faq { padding: 112px 16px; border-top: 1px solid var(--line); }
.faq-list { max-width: 760px; margin: 40px auto 0; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0;
  font-size: 18px; font-weight: 700; cursor: pointer; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--surface);
  background-image: linear-gradient(var(--text), var(--text)), linear-gradient(var(--text), var(--text));
  background-size: 12px 2px, 2px 12px; background-position: center; background-repeat: no-repeat;
  transition: transform 0.25s ease, background-color 0.2s;
}
.faq details[open] summary::after { transform: rotate(45deg); background-color: var(--badge); }
.faq details p { margin: 0 0 22px; max-width: 42em; font-size: 16px; color: var(--text-2); }

/* ---------------------------------------------------------------- Closing */
.closing { padding: 96px 16px 128px; text-align: center; background: linear-gradient(180deg, #fff 0%, #fff6f5 100%); }
.closing-orb { width: 300px; height: 300px; margin: -40px auto -24px; }
.closing-orb canvas { width: 300px; height: 300px; }
.closing h2 { max-width: 940px; margin: 0 auto; }
.closing .cta-row { margin-top: 36px; }

/* ---------------------------------------------------------------- Footer */
.footer {
  max-width: var(--max); margin: 0 auto; padding: 32px 16px 48px;
  display: flex; align-items: baseline; gap: 20px; border-top: 1px solid var(--line);
}
.footer p { margin: 0; font-size: 13px; color: var(--text-2); max-width: 60em; }

/* ---------------------------------------------------------------- Responsive */
@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fc-top { right: -2%; }
  .fc-bottom { left: -2%; }
  #hero-phone { left: 6%; }
  .lang-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}
@media (max-width: 900px) {
  :root { --nav-h: 58px; }
  .nav-links { display: none; }
  .nav .btn-small { margin-left: auto; }
  .hero { grid-template-columns: minmax(0, 1fr); min-height: 0; padding-top: 36px; gap: 8px; overflow: clip; }
  .hero-stage { height: 600px; min-height: 0; }
  #hero-phone { left: 0; }
  .how { height: auto; padding: 96px 0 40px; }
  .how-sticky { position: static; height: auto; grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .how-steps li { opacity: 1; border-color: var(--line); }
  .how-stage { height: 560px; }
  .how-stage .seat { opacity: 1; }
  .demo-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .demo-stage { position: relative; top: 0; height: 640px; min-height: 0; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .lede { font-size: 17px; }
  .section-lede { font-size: 16px; }
  .hero-stage { height: 540px; }
  .float-card { max-width: 196px; padding: 10px 12px; }
  .fc-text { font-size: 13px; }
  .fc-top { top: 4%; }
  .fc-bottom { bottom: 9%; }
  .meaning, .languages { padding: 88px 16px; }
  .demo, .faq { padding: 88px 16px; }
  .feature-grid { grid-template-columns: minmax(0, 1fr); }
  .voice-compare { padding: 20px 18px 16px; }
  .vc-row { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .demo-steps, .talk-card, .state-card, .transcript-card { padding-left: 18px; padding-right: 18px; }
  .state-list { grid-template-columns: minmax(0, 1fr); }
  .demo-stage { height: 580px; }
  .lang-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .demo-steps { padding-top: 0; padding-bottom: 0; }
  .hero-stage { margin-top: 12px; }
  .lang-card { padding: 14px; }
  .footer { flex-direction: column; gap: 8px; }
  .cta-row .btn { flex: 1 1 auto; }
}

/* ---------------------------------------------------------------- Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  .pass { display: none; }
}