/* ==========================================================================
   Finetunio website — classic CSS, BEM naming.
   Macro layout: CSS Grid. Component internals: Flexbox.
   ========================================================================== */

/* --- Tokens ------------------------------------------------------------- */
:root {
  --ink-950: #060810;
  --ink-900: #0a0d16;
  --ink-850: #0e1220;
  --ink-800: #131829;
  --ink-700: #1b2236;
  --line: rgba(160, 180, 220, 0.14);
  --line-strong: rgba(160, 180, 220, 0.26);

  --text: #e9eef7;
  --text-muted: #97a3ba;
  --text-faint: #6b7690;

  --cyan: #3fdcff;      /* diagnosis / signal */
  --mint: #4ef2a3;      /* safe / recommended */
  --amber: #ffb454;     /* caution / risk */
  --violet: #a78bfa;    /* secondary intelligence accent */
  --red: #ff6b7a;

  --paper: #f5f7fb;
  --paper-ink: #10131c;
  --paper-muted: #4d5670;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 12px;
  --radius-lg: 18px;
  --max-width: 1180px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 500ms;
}

/* --- Reset & base -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--ink-950);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, ul, ol, dl, dd, figure, fieldset { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button, input, select { font: inherit; color: inherit; }
fieldset { border: 0; }
em { font-style: italic; color: var(--cyan); }

.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;
}

/* --- Buttons ------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out), background 200ms;
}
.button--primary {
  background: linear-gradient(135deg, var(--mint), #2fd9c0);
  color: #04150c;
  box-shadow: 0 0 0 1px rgba(78, 242, 163, 0.25), 0 8px 28px rgba(47, 217, 192, 0.22);
}
.button--primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(78, 242, 163, 0.4), 0 12px 34px rgba(47, 217, 192, 0.32); }
.button--ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.button--ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }
.button--small { padding: 0.5rem 1.1rem; font-size: 0.85rem; }
.button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible, [role="tab"]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* --- Header / nav (Flexbox internals) ------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 8, 16, 0.92);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-header__brand { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
.site-header__mark {
  width: 22px; height: 22px; border-radius: 6px;
  background: conic-gradient(from 210deg, var(--cyan), var(--mint), var(--violet), var(--cyan));
  box-shadow: 0 0 14px rgba(63, 220, 255, 0.45);
}
.site-nav { display: flex; align-items: center; }
.site-nav__list { display: flex; align-items: center; gap: 1.6rem; }
.site-nav__link { font-size: 0.9rem; color: var(--text-muted); transition: color 160ms; }
.site-nav__link:hover { color: var(--text); }
.site-nav__toggle { display: none; background: none; border: 1px solid var(--line-strong); border-radius: 8px; padding: 0.55rem 0.65rem; cursor: pointer; }
.site-nav__toggle-bar {
  display: block; width: 18px; height: 2px; background: var(--text);
  box-shadow: 0 -6px 0 var(--text), 0 6px 0 var(--text);
}

/* --- Section scaffolding (Grid macro layout) ------------------------------ */
.section { padding: 6.5rem 1.5rem; }
.section--tinted { background: var(--ink-900); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
}
.section__inner--narrow { max-width: 860px; }
.section__kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}
.section__title { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 750; letter-spacing: -0.02em; line-height: 1.15; max-width: 21em; }
.section__lede { color: var(--text-muted); font-size: 1.08rem; max-width: 46em; }
.section--light { background: var(--paper); color: var(--paper-ink); }
.section--light .section__lede { color: var(--paper-muted); }
.section--light .section__kicker { color: #0891b2; }

/* --- Hero ----------------------------------------------------------------- */
.hero { position: relative; overflow: hidden; padding: 5.5rem 1.5rem 6.5rem; }
.hero__glow {
  position: absolute; inset: -30% -10% auto;
  height: 80%;
  background:
    radial-gradient(42% 55% at 22% 38%, rgba(63, 220, 255, 0.14), transparent 70%),
    radial-gradient(38% 50% at 78% 30%, rgba(167, 139, 250, 0.12), transparent 70%),
    radial-gradient(30% 45% at 55% 80%, rgba(78, 242, 163, 0.08), transparent 70%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 3.5rem;
  align-items: center;
}
.hero__copy { display: flex; flex-direction: column; gap: 1.4rem; }
.hero__kicker {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--cyan);
}
.hero__kicker-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation: pulse 2.6s infinite; }
.hero__title { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.08; }
.hero__lede { color: var(--text-muted); font-size: 1.12rem; max-width: 34em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.hero__footnote { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }

/* --- Workbench (hero demo) ------------------------------------------------ */
.workbench {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--ink-850), var(--ink-900));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(63, 220, 255, 0.05);
  overflow: hidden;
}
.workbench__chrome {
  display: flex; align-items: center; gap: 0.45rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.workbench__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ink-700); }
.workbench__chrome-title { margin-left: 0.5rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-faint); }
.workbench__badge {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 0.66rem;
  color: var(--amber);
  border: 1px solid rgba(255, 180, 84, 0.35);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  white-space: nowrap;
}
.workbench__body { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.1rem; padding: 1.2rem; }
.workbench__form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.1rem;
}
.workbench__field { display: flex; flex-direction: column; gap: 0.4rem; }
.workbench__field--wide { grid-column: 1 / -1; }
.workbench__label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-faint);
}
.workbench__value { color: var(--cyan); font-size: 0.8rem; }
.workbench__select {
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  padding: 0.6rem 0.8rem;
  font-size: 0.92rem;
  cursor: pointer;
}
.workbench__range { accent-color: var(--cyan); cursor: pointer; }
.workbench__segments { display: flex; gap: 0.4rem; }
.workbench__segment { flex: 1; display: flex; }
.workbench__segment input { position: absolute; opacity: 0; }
.workbench__segment span {
  flex: 1; text-align: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.45rem 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 180ms, color 180ms, background 180ms;
}
.workbench__segment input:checked + span { border-color: var(--cyan); color: var(--cyan); background: rgba(63, 220, 255, 0.08); }
.workbench__segment input:focus-visible + span { outline: 2px solid var(--cyan); outline-offset: 2px; }

.workbench__output { display: flex; flex-direction: column; gap: 0.9rem; border-top: 1px solid var(--line); padding-top: 1rem; }
.workbench__diagnosis { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; }
.workbench__diagnosis-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); }
.workbench__diagnosis-class { color: var(--cyan); font-weight: 650; font-size: 0.98rem; }
.workbench__diagnosis-conf { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }

/* Ranking bars (shared by hero) */
.ranking { display: flex; flex-direction: column; gap: 0.55rem; }
.ranking__item {
  display: grid;
  grid-template-columns: 1.4rem minmax(7.5rem, 12rem) minmax(0, 1fr) 3.2rem;
  align-items: center;
  gap: 0.7rem;
  transition: transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);
}
.ranking__rank { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-faint); }
.ranking__name { font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ranking__track { display: block; height: 8px; border-radius: 999px; background: var(--ink-700); overflow: hidden; }
.ranking__bar {
  display: block;
  height: 100%; border-radius: 999px; width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--mint));
  transition: width 700ms var(--ease-out), background 300ms;
}
.ranking__item--gated .ranking__bar { background: var(--red); }
.ranking__item--gated .ranking__name,
.ranking__item--gated .ranking__score { color: var(--text-faint); text-decoration: line-through; text-decoration-color: rgba(255, 107, 122, 0.6); }
.ranking__item--top .ranking__name { color: var(--mint); font-weight: 650; }
.ranking__score { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); text-align: right; }

/* Why-not card */
.whynot {
  border: 1px solid rgba(255, 180, 84, 0.3);
  border-left: 3px solid var(--amber);
  border-radius: 10px;
  background: rgba(255, 180, 84, 0.05);
  padding: 0.85rem 1rem;
  display: flex; flex-direction: column; gap: 0.3rem;
}
.whynot__title { font-size: 0.9rem; font-weight: 650; color: var(--amber); }
.whynot__body { font-size: 0.86rem; color: var(--text-muted); line-height: 1.55; }

/* --- Problem section ------------------------------------------------------ */
.problem__compare {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}
.problem__col {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  display: flex; flex-direction: column; gap: 1rem;
  background: var(--ink-900);
}
.problem__col--after { border-color: rgba(78, 242, 163, 0.35); box-shadow: 0 0 40px rgba(78, 242, 163, 0.06); }
.problem__col-title { font-size: 1rem; font-weight: 650; color: var(--text-muted); }
.problem__col--after .problem__col-title { color: var(--mint); }
.problem__list { display: flex; flex-direction: column; gap: 0.6rem; }
.problem__item { display: flex; align-items: baseline; gap: 0.6rem; font-size: 0.93rem; }
.problem__item--noise { color: var(--text-faint); font-family: var(--font-mono); font-size: 0.85rem; }
.problem__item--noise::before { content: "✕"; color: var(--red); font-size: 0.75rem; }
.problem__item--signal::before { content: "▸"; color: var(--mint); font-size: 0.8rem; }
.problem__mutter { color: var(--text-faint); opacity: 0.7; font-style: italic; }
.problem__verdict { margin-top: auto; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.04em; }
.problem__verdict--bad { color: var(--red); }
.problem__verdict--good { color: var(--mint); }
.problem__arrow { align-self: center; font-size: 1.6rem; color: var(--cyan); }

/* --- Category stack ------------------------------------------------------- */
.stack { margin-top: 2rem; display: grid; gap: 0.55rem; max-width: 640px; }
.stack__layer {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.85rem 1.2rem;
  font-size: 0.95rem;
  background: var(--ink-850);
}
.stack__layer--dim { color: var(--text-faint); background: transparent; }
.stack__layer--finetunio {
  border-color: var(--cyan);
  color: var(--text);
  font-weight: 650;
  background: linear-gradient(90deg, rgba(63, 220, 255, 0.1), rgba(78, 242, 163, 0.08));
  box-shadow: 0 0 30px rgba(63, 220, 255, 0.12);
}
.stack__tag {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--mint);
  border: 1px solid rgba(78, 242, 163, 0.4);
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
}

/* --- Plan section --------------------------------------------------------- */
.plan__switcher { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.plan__goal {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  font-size: 0.86rem;
  cursor: pointer;
  transition: border-color 180ms, color 180ms, background 180ms;
}
.plan__goal:hover { color: var(--text); border-color: var(--text-faint); }
.plan__goal--active { border-color: var(--cyan); color: var(--cyan); background: rgba(63, 220, 255, 0.08); }

.plan__object {
  margin-top: 1.4rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--ink-900);
  overflow: hidden;
}
.plan__header {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(220px, 1fr);
  gap: 1.5rem;
  padding: 1.6rem;
  border-bottom: 1px solid var(--line);
}
.plan__field-label { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 0.35rem; }
.plan__class { color: var(--cyan); font-size: 1.15rem; letter-spacing: -0.01em; }
.plan__reasoning { margin-top: 0.5rem; color: var(--text-muted); font-size: 0.92rem; }
.plan__meta { display: flex; flex-direction: column; gap: 0.7rem; border-left: 1px solid var(--line); padding-left: 1.5rem; }
.plan__meta-item { display: flex; justify-content: space-between; gap: 1rem; }
.plan__meta-item dt { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); }
.plan__meta-item dd { font-family: var(--font-mono); font-size: 0.88rem; color: var(--mint); }

.plan__steps { display: grid; gap: 0; }
.plan__step {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1.15fr) minmax(0, 1.6fr) 6.4rem;
  gap: 1.1rem;
  padding: 1.1rem 1.6rem;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: background 200ms, transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);
}
.plan__step:hover { background: rgba(255, 255, 255, 0.02); }
.plan__step-rank {
  font-family: var(--font-mono); font-size: 1rem; color: var(--text-faint);
  display: flex; align-items: center; justify-content: center;
  width: 2.2rem; height: 2.2rem;
  border: 1px solid var(--line-strong); border-radius: 50%;
}
.plan__step--top .plan__step-rank { border-color: var(--mint); color: var(--mint); }
.plan__step-main { display: flex; flex-direction: column; gap: 0.3rem; }
.plan__step-name { font-weight: 650; font-size: 0.98rem; }
.plan__step--top .plan__step-name { color: var(--mint); }
.plan__step-est { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-faint); }
.plan__step-rationale { font-size: 0.88rem; color: var(--text-muted); }
.plan__step-actions { margin-top: 0.45rem; display: flex; flex-direction: column; gap: 0.25rem; }
.plan__step-action { font-size: 0.8rem; color: var(--text-faint); display: flex; gap: 0.45rem; }
.plan__step-action::before { content: "·"; color: var(--cyan); }
.plan__step-score { display: flex; flex-direction: column; align-items: flex-end; gap: 0.3rem; }
.plan__step-score-num { font-family: var(--font-mono); font-size: 1.05rem; color: var(--text); }
.plan__step-score-label { font-family: var(--font-mono); font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-faint); }
.whynot--plan { border-radius: 0; border-left-width: 3px; border-top: 0; border-right: 0; border-bottom: 0; padding: 1.2rem 1.6rem; }
.plan__disclaimer { margin-top: 1rem; font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-faint); max-width: 56em; }

/* --- Interventions grid --------------------------------------------------- */
.interventions__grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}
.strategy-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  background: var(--ink-850);
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: transform 250ms var(--ease-out), border-color 250ms;
}
.strategy-card:hover { transform: translateY(-4px); }
.strategy-card--prompt:hover { border-color: var(--cyan); }
.strategy-card--rag:hover { border-color: var(--cyan); }
.strategy-card--finetune:hover { border-color: var(--violet); }
.strategy-card--tools:hover { border-color: var(--mint); }
.strategy-card--guardrails:hover { border-color: var(--amber); }
.strategy-card__title { font-size: 1.02rem; font-weight: 700; letter-spacing: -0.01em; }
.strategy-card--prompt .strategy-card__title::before,
.strategy-card--rag .strategy-card__title::before,
.strategy-card--finetune .strategy-card__title::before,
.strategy-card--tools .strategy-card__title::before,
.strategy-card--guardrails .strategy-card__title::before {
  content: ""; display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 0.55rem;
}
.strategy-card--prompt .strategy-card__title::before { background: var(--cyan); }
.strategy-card--rag .strategy-card__title::before { background: #38bdf8; }
.strategy-card--finetune .strategy-card__title::before { background: var(--violet); }
.strategy-card--tools .strategy-card__title::before { background: var(--mint); }
.strategy-card--guardrails .strategy-card__title::before { background: var(--amber); }
.strategy-card__row { font-size: 0.86rem; color: var(--text-muted); }
.strategy-card__when, .strategy-card__fails, .strategy-card__evidence {
  display: block;
  font-family: var(--font-mono); font-size: 0.66rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 0.15rem;
}
.strategy-card__when { color: var(--mint); }
.strategy-card__fails { color: var(--amber); }
.strategy-card__evidence { color: var(--cyan); }
.strategy-card--compose { justify-content: center; border-style: dashed; background: transparent; }
.strategy-card__body { font-size: 0.9rem; color: var(--text-muted); }

/* --- Intent translation --------------------------------------------------- */
.translation { margin-top: 2rem; display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.translation__pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.translation__pair:last-child { border-bottom: 0; }
.translation__tech {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-faint);
  padding: 1.1rem 1.4rem;
  background: var(--ink-900);
  height: 100%;
  display: flex; align-items: center;
}
.translation__human { font-size: 1.02rem; padding: 1.1rem 1.4rem; color: var(--text); }
.intent__note { margin-top: 1.2rem; color: var(--text-muted); font-size: 0.92rem; }

/* --- Lifecycle rail -------------------------------------------------------- */
.rail {
  margin-top: 2.2rem;
  display: grid;
  grid-template-columns: repeat(7, minmax(150px, 1fr));
  gap: 0.8rem;
  overflow-x: auto;
  padding-bottom: 0.8rem;
  scroll-snap-type: x proximity;
}
.rail__stage {
  scroll-snap-align: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  background: var(--ink-850);
  position: relative;
}
.rail__stage:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -0.85rem; top: 1rem;
  color: var(--text-faint);
  z-index: 1;
}
.rail__status {
  align-self: flex-start;
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: 999px; padding: 0.18rem 0.55rem;
  border: 1px solid;
}
.rail__stage--built .rail__status { color: var(--mint); border-color: rgba(78, 242, 163, 0.4); }
.rail__stage--partial .rail__status { color: var(--cyan); border-color: rgba(63, 220, 255, 0.4); }
.rail__stage--simulated .rail__status { color: var(--amber); border-color: rgba(255, 180, 84, 0.45); }
.rail__stage--next .rail__status { color: var(--violet); border-color: rgba(167, 139, 250, 0.45); }
.rail__name { font-size: 0.98rem; font-weight: 700; }
.rail__desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* --- Trust (light section) -------------------------------------------------- */
.trust__grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}
.trust-fact {
  border: 1px solid rgba(16, 19, 28, 0.1);
  border-radius: var(--radius-lg);
  background: #ffffff;
  padding: 1.4rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  box-shadow: 0 2px 10px rgba(16, 19, 28, 0.05);
}
.trust-fact__head { font-size: 1rem; font-weight: 700; color: var(--paper-ink); }
.trust-fact p { font-size: 0.88rem; color: var(--paper-muted); }

/* --- Feedback loop ---------------------------------------------------------- */
.loop__diagram {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.loop__node {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.55rem 1.15rem;
  background: var(--ink-850);
}
.loop__node--accent { border-color: var(--violet); color: var(--violet); box-shadow: 0 0 24px rgba(167, 139, 250, 0.18); }
.loop__arrow { color: var(--text-faint); }
.loop__arrow--return { color: var(--violet); font-size: 1.2rem; }
.loop__status { margin-top: 1.4rem; font-family: var(--font-mono); font-size: 0.78rem; color: var(--amber); }

/* --- Final CTA --------------------------------------------------------------- */
.cta { text-align: center; position: relative; overflow: hidden; }
.cta__inner { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 1.3rem; }
.cta__title { font-size: clamp(1.6rem, 3.2vw, 2.4rem); font-weight: 780; letter-spacing: -0.02em; line-height: 1.15; }
.cta__lede { color: var(--text-muted); font-size: 1.05rem; }
.cta__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.9rem; }
.cta__note { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }

/* --- Footer ------------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding: 2.5rem 1.5rem 3rem; }
.site-footer__inner { max-width: var(--max-width); margin: 0 auto; display: flex; flex-direction: column; gap: 0.4rem; }
.site-footer__brand { font-weight: 700; font-size: 0.95rem; }
.site-footer__line { color: var(--text-muted); font-size: 0.85rem; }
.site-footer__legal { color: var(--text-faint); font-size: 0.75rem; margin-top: 0.8rem; }

/* --- Scroll reveal ------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 650ms var(--ease-out), transform 650ms var(--ease-out); }
.reveal--visible { opacity: 1; transform: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* --- Responsive ----------------------------------------------------------------- */
@media (max-width: 1020px) {
  .hero__inner { grid-template-columns: minmax(0, 1fr); gap: 2.5rem; }
  .interventions__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trust__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plan__header { grid-template-columns: minmax(0, 1fr); }
  .plan__meta { border-left: 0; padding-left: 0; flex-direction: row; flex-wrap: wrap; gap: 1.4rem; }
  .plan__meta-item { flex-direction: column; gap: 0.15rem; }
}

@media (max-width: 760px) {
  .section { padding: 4.5rem 1.25rem; }
  .site-nav__toggle { display: block; }
  .site-nav__list {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink-900);
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 1.5rem 1.2rem;
  }
  .site-nav__list--open { display: flex; }
  .site-nav__item { padding: 0.55rem 0; }
  .site-nav__item--cta { padding-top: 1rem; }
  .problem__compare { grid-template-columns: minmax(0, 1fr); }
  .problem__arrow { transform: rotate(90deg); }
  .workbench__form { grid-template-columns: minmax(0, 1fr); }
  .plan__step { grid-template-columns: 2.4rem minmax(0, 1fr) auto; }
  .plan__step-detail { grid-column: 1 / -1; }
  .interventions__grid { grid-template-columns: minmax(0, 1fr); }
  .trust__grid { grid-template-columns: minmax(0, 1fr); }
  .translation__pair { grid-template-columns: minmax(0, 1fr); }
  .translation__tech { padding-bottom: 0.3rem; }
  .translation__human { padding-top: 0.3rem; }
  .ranking__item { grid-template-columns: 1.2rem minmax(6.4rem, 8.5rem) minmax(0, 1fr) 2.6rem; gap: 0.5rem; }
  .workbench__badge { display: none; }
}

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