:root {
  --ink: #221c19;
  --ink-soft: #5c534d;
  --paper: #faf6ef;
  --paper-2: #f1eadd;
  --accent: #b4552f;
  --accent-soft: #e8c9ba;
  --good: #2e7d5b;
  --line: #ddd2c2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ece5dc;
    --ink-soft: #b0a79c;
    --paper: #171310;
    --paper-2: #221c17;
    --accent: #e08055;
    --accent-soft: #4b2e1f;
    --good: #5cc496;
    --line: #382f27;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.6;
}
.wrap { max-width: 880px; margin: 0 auto; padding: 0 1.25rem; }
header.site {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.4rem 0; gap: 1rem;
}
.brand { font-weight: 700; letter-spacing: 0.01em; }
.brand em { color: var(--accent); font-style: normal; }
.head-right { display: flex; align-items: center; gap: 0.8rem; }
.lang-switch {
  font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.85rem;
}
.lang-switch a { text-decoration: none; }
.lang-switch .cur { color: var(--ink); font-weight: 600; }
.alpha-pill {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.25rem 0.7rem; color: var(--ink-soft); white-space: nowrap;
}
.hero { padding: 4rem 0 3.2rem; }
.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.12; margin: 0 0 1.2rem; font-weight: 650;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero .lede { font-size: 1.18rem; color: var(--ink-soft); max-width: 38rem; }
.whisper { margin-top: 2.2rem; font-style: italic; color: var(--accent); font-size: 1.02rem; }
.whisper span { color: var(--ink-soft); font-style: normal; font-size: 0.9rem; }
.langs-now {
  margin-top: 1rem; font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.85rem; color: var(--ink-soft);
}
.langs-now b { color: var(--ink); }
section { padding: 3rem 0; border-top: 1px solid var(--line); }
h2 { font-size: 1.6rem; margin: 0 0 1.4rem; font-weight: 650; }
h2 em { font-style: italic; color: var(--accent); }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.4rem; }
.card {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 16px; padding: 1.2rem 1.3rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.06rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.97rem; }
.num {
  font-family: ui-sans-serif, system-ui, sans-serif;
  color: var(--accent); font-size: 0.8rem; letter-spacing: 0.08em;
}
.promise { font-size: 1.25rem; max-width: 40rem; font-style: italic; }
ul.plain { padding-left: 1.2rem; color: var(--ink-soft); }
ul.plain li { margin-bottom: 0.55rem; }
ul.plain strong { color: var(--ink); }
.truth-table {
  width: 100%; border-collapse: collapse; font-size: 0.95rem;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.truth-table th, .truth-table td {
  text-align: left; padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.truth-table th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); }
.yes { color: var(--good); }
.no { color: var(--accent); }
.fine { color: var(--ink-soft); font-size: 0.88rem; }
.cta {
  display: inline-block; margin-top: 1.4rem;
  background: var(--accent); color: #fff; text-decoration: none;
  padding: 0.75rem 1.5rem; border-radius: 12px;
  font-family: ui-sans-serif, system-ui, sans-serif; font-weight: 600;
}
.platforms { display: flex; gap: 1.8rem; flex-wrap: wrap; color: var(--ink-soft); font-size: 0.95rem; }
.platforms b { color: var(--ink); display: block; }
footer {
  border-top: 1px solid var(--line); padding: 2.2rem 0 3rem;
  color: var(--ink-soft); font-size: 0.88rem;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
footer .rows { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
a { color: var(--accent); }

/* ---- Interactive demo ---- */
.demo-frame {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 20px; padding: 1.3rem; max-width: 480px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  min-height: 340px; display: flex; flex-direction: column; gap: 0.6rem;
}
.demo-caption { color: var(--ink-soft); font-size: 0.82rem; font-family: ui-sans-serif, system-ui, sans-serif; margin-top: 0.6rem; }
.d-bubble {
  max-width: 88%; padding: 0.5rem 0.8rem; border-radius: 14px;
  font-size: 0.93rem; line-height: 1.45; animation: rise 0.35s ease;
}
.d-user { align-self: flex-end; background: var(--accent-soft); }
.d-coach { align-self: flex-start; background: var(--paper); border: 1px solid var(--line); }
.d-label { font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.15rem; }
.d-target {
  background: var(--paper); border: 1px solid var(--accent);
  border-radius: 14px; padding: 0.8rem 0.9rem; animation: rise 0.35s ease;
}
.d-target .big { font-family: Georgia, serif; font-size: 1.12rem; font-weight: 650; }
.d-respell { color: var(--accent); font-size: 0.92rem; margin-top: 0.2rem; }
.d-chips { display: flex; flex-wrap: wrap; gap: 0.3rem; margin: 0.4rem 0; animation: rise 0.35s ease; }
.d-chip { padding: 0.1rem 0.45rem; border-radius: 7px; font-size: 0.88rem; }
.d-chip.match { background: color-mix(in srgb, var(--good) 25%, transparent); }
.d-chip.close { background: color-mix(in srgb, #f0b429 30%, transparent); }
.d-chip.missed { background: color-mix(in srgb, var(--accent) 30%, transparent); text-decoration: line-through; }
.d-tip { font-size: 0.88rem; color: var(--ink-soft); animation: rise 0.35s ease; }
.d-pass { color: var(--good); font-weight: 650; animation: rise 0.35s ease; }
.d-telemetry { font-size: 0.8rem; color: var(--ink-soft); font-style: italic; }
.d-actions { margin-top: auto; display: flex; gap: 0.6rem; flex-wrap: wrap; padding-top: 0.8rem; }
.d-btn {
  font-family: inherit; font-size: 0.9rem; font-weight: 600;
  border: 1px solid var(--line); background: var(--paper);
  color: var(--ink); border-radius: 10px; padding: 0.5rem 1rem; cursor: pointer;
}
.d-btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.d-btn.ghost { background: transparent; color: var(--ink-soft); }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---- /try mock test ---- */
.try-root { display: flex; flex-direction: column; gap: 0.7rem; padding: 1rem 0 3rem; }
.t-status { color: var(--ink-soft); font-style: italic; font-size: 0.95rem; min-height: 1.4rem; }
.t-status.err { color: var(--accent); font-style: normal; }
.t-thread { display: flex; flex-direction: column; gap: 0.5rem; }
.t-input { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: flex-start; }
.t-input textarea {
  flex: 1; min-width: 240px; min-height: 4.2rem; font: inherit;
  font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.95rem;
  color: var(--ink); background: var(--paper-2);
  border: 1px solid var(--line); border-radius: 12px; padding: 0.6rem 0.8rem;
}
.t-listening { animation: pulse 1.1s infinite; }
@keyframes pulse { 50% { opacity: 0.55; } }
.t-note { font-size: 0.85rem; color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; }
.t-steps { counter-reset: step; padding-left: 0; list-style: none; }
.t-steps li { counter-increment: step; margin-bottom: 0.9rem; padding-left: 2.4rem; position: relative; }
.t-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 0.15rem;
  font-family: ui-sans-serif, system-ui, sans-serif; font-size: 0.8rem;
  color: var(--accent); letter-spacing: 0.06em;
}
.t-steps strong { display: block; }
.t-steps span { color: var(--ink-soft); font-size: 0.95rem; }
.p-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 0.7rem; font-family: ui-sans-serif, system-ui, sans-serif;
}
.p-card {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: 14px;
  padding: 0.75rem 0.85rem; cursor: pointer; position: relative;
}
.p-card.sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.p-card.dim { opacity: 0.55; cursor: default; }
.p-name { font-weight: 650; }
.p-home { color: var(--ink-soft); font-size: 0.8rem; margin-bottom: 0.3rem; }
.p-tag { font-size: 0.85rem; line-height: 1.35; margin-bottom: 0.5rem; }
.p-diff {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.07em;
  border-radius: 999px; padding: 0.12rem 0.5rem; border: 1px solid var(--line);
  color: var(--ink-soft);
}
.p-diff.spirited { color: var(--accent); border-color: var(--accent); }