/* Etoile Innovation — dossier theme (shared)
   Brand: Navy #0B1F4D · Blue #1677F2 · Gold #F6C84C · Slate #526B95 */

@font-face {
  font-family: 'Montserrat';
  src: url('/assets/fonts/Montserrat[wght].ttf') format('truetype');
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --navy: #0B1F4D;
  --blue: #1677F2;
  --gold: #C9A227;
  --body: #33477A;
  --muted: #8CA0C0;
  --line: #E8ECF4;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Montserrat', system-ui, sans-serif;
  background: #FFFFFF;
  color: var(--body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---------- subpage header ---------- */
.topbar {
  width: min(680px, 90vw);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 34px 0 0;
}

.topbar .mark { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.topbar .mark img { width: 30px; height: 30px; }
.topbar .mark span {
  font-size: 11px; font-weight: 650; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--navy);
}

.topbar nav { display: flex; gap: 22px; }
.topbar nav a {
  font-size: 11px; font-weight: 650; letter-spacing: 2px;
  text-transform: uppercase; color: var(--muted); text-decoration: none;
  transition: color .15s;
}
.topbar nav a:hover { color: var(--navy); }
.topbar nav a[aria-current] { color: var(--blue); }

/* ---------- cover ---------- */
.cover {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(48px, 10vh, 110px) 24px 30px;
}

.cover .lockup { width: min(440px, 82vw); height: auto; }

.cover .hero-line {
  margin-top: 40px;
  font-size: 20px; font-weight: 550; line-height: 1.5; color: var(--navy);
  max-width: 32ch;
}

.toc {
  list-style: none;
  margin-top: 56px;
  width: min(380px, 84vw);
  text-align: left;
}

.toc li { border-top: 1px solid var(--line); }
.toc li:last-child { border-bottom: 1px solid var(--line); }

.toc a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 17px 4px;
  text-decoration: none;
  transition: padding-left .18s ease;
}
.toc a:hover { padding-left: 12px; }

.toc .num { font-size: 12px; font-weight: 650; letter-spacing: 2px; color: var(--gold); }
.toc .sec {
  font-size: 12.5px; font-weight: 650; letter-spacing: 3px;
  text-transform: uppercase; color: var(--navy);
}
.toc .arrow { margin-left: auto; color: var(--muted); font-weight: 400; }

.cover .industries {
  margin-top: 56px;
  font-size: 11px; font-weight: 650; letter-spacing: 3px;
  text-transform: uppercase; color: var(--muted);
}
.cover .industries .dot { color: var(--gold); margin: 0 10px; }

/* ---------- subpage body ---------- */
.page {
  width: min(680px, 90vw);
  padding: clamp(44px, 8vh, 80px) 0 30px;
}

.index {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 26px;
}
.index .num { font-size: 12px; font-weight: 650; letter-spacing: 2px; color: var(--gold); }
.index .sec {
  font-size: 12px; font-weight: 650; letter-spacing: 3px;
  text-transform: uppercase; color: var(--navy);
}
.index .sec::after { content: ' /'; color: var(--muted); font-weight: 500; }

.page > section { border-top: 1px solid var(--line); padding: 26px 0 44px; }
.page > section:first-of-type { border-top: none; padding-top: 0; }

.page p { font-size: 16px; line-height: 1.8; margin-bottom: 14px; }

.sub {
  font-size: 11px; font-weight: 650; letter-spacing: 3px;
  text-transform: uppercase; color: var(--muted);
  margin: 30px 0 18px;
}

.entry {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.entry:last-of-type { border-bottom: none; }
.entry .key {
  font-size: 12px; font-weight: 650; letter-spacing: 2px;
  text-transform: uppercase; color: var(--navy); padding-top: 3px;
}
.entry p { font-size: 14.5px; line-height: 1.7; margin: 0; }

/* ---------- industry click-downs ---------- */
details { border-top: 1px solid var(--line); }
details:last-of-type { border-bottom: 1px solid var(--line); }

summary {
  display: flex; align-items: baseline; gap: 16px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary .key {
  font-size: 12.5px; font-weight: 650; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--navy);
}
summary .hook { font-size: 13px; color: var(--muted); font-weight: 450; }
summary .plus { margin-left: auto; color: var(--gold); font-weight: 600; transition: transform .18s; }
details[open] summary .plus { transform: rotate(45deg); }

details .detail-body { padding: 2px 4px 24px; }
details .detail-body p { font-size: 14.5px; line-height: 1.8; }

/* ---------- enquiry form ---------- */
form { margin-top: 16px; display: flex; flex-direction: column; gap: 5px; }
label {
  font-size: 10.5px; font-weight: 650; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--muted); margin-top: 12px;
}
input, textarea {
  font-family: inherit; font-size: 15px; color: var(--navy);
  border: 1px solid var(--line); border-radius: 3px; padding: 11px 13px;
  background: #FBFCFE;
}
input:focus, textarea:focus { outline: none; border-color: var(--blue); background: #fff; }
textarea { resize: vertical; min-height: 110px; }

button {
  align-self: flex-start; margin-top: 22px;
  background: var(--navy); color: #fff; border: none; border-radius: 3px;
  font-family: inherit; font-size: 12px; font-weight: 650;
  letter-spacing: 2.5px; text-transform: uppercase;
  padding: 14px 30px; cursor: pointer; transition: background .2s;
}
button:hover { background: var(--blue); }
button:disabled { opacity: .6; cursor: wait; }

.form-status { font-size: 14px; margin-top: 6px; min-height: 20px; }
.form-status.ok { color: #1E7E34; }
.form-status.err { color: #C0392B; }

.alt { font-size: 13px; color: var(--muted); margin-top: 18px; }
.alt a { color: var(--blue); text-decoration: none; font-weight: 600; }
.alt a:hover { text-decoration: underline; }

/* ---------- footer ---------- */
footer {
  margin-top: auto;
  width: min(680px, 90vw);
  border-top: 1px solid var(--line);
  padding: 22px 0 30px;
  display: flex; justify-content: space-between; gap: 16px;
}
footer p { font-size: 10.5px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }

@media (max-width: 640px) {
  .entry { grid-template-columns: 1fr; gap: 4px; }
  summary { flex-wrap: wrap; }
  summary .hook { flex-basis: 100%; }
  .topbar nav { gap: 14px; }
}