/* ============================================================
   CARD PRIME D 3.0 — Subpage chrome
   Masthead · spec tables · module lists · forms · 404
   ============================================================ */

.masthead {
  position: relative; overflow: hidden;
  padding-block: clamp(76px, 9vw, 124px) clamp(48px, 6vw, 78px);
  border-bottom: 1px solid var(--line);
}
.masthead::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 46% 84% at 12% 0%, rgba(139,92,246,0.18), transparent 66%),
    radial-gradient(ellipse 40% 70% at 88% 30%, rgba(34,211,238,0.10), transparent 70%);
}
.masthead > * { position: relative; }
.masthead h1 { max-width: 17ch; font-size: clamp(2.2rem, 4.6vw, 3.5rem); }
.masthead p { max-width: 62ch; }
.crumb { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.12em;
         text-transform: uppercase; color: var(--ink-faint); margin-bottom: 18px; }
.crumb a:hover { color: var(--prime); }

/* ---------- Spec table ---------- */
.spec { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec caption {
  text-align: left; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-faint); padding-bottom: 14px;
}
.spec th, .spec td { text-align: left; padding: 17px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec thead th {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); font-weight: 400;
  border-bottom: 1px solid var(--line-strong);
}
.spec tbody th { color: var(--ink); font-weight: 600; font-family: var(--font-display);
                 font-size: 15px; width: 30%; }
.spec td { color: var(--ink-dim); }
.spec tbody tr:hover td, .spec tbody tr:hover th { background: rgba(139,92,246,0.045); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll .spec, .table-scroll .matrix { min-width: 640px; }

/* ---------- Feature list ---------- */
.flist { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }
.flist li { display: grid; grid-template-columns: 18px 1fr; gap: 13px; align-items: start;
            font-size: 14.5px; color: var(--ink-dim); }
.flist li::before {
  content: ""; width: 8px; height: 8px; margin-top: 8px; border-radius: 50%;
  background: var(--prime); box-shadow: 0 0 10px var(--prime-soft);
}
.flist--gold li::before  { background: var(--gold); }
.flist--spark li::before { background: var(--spark); }
.flist--mint li::before  { background: var(--mint); }

/* ---------- Module cards ---------- */
.mod { display: grid; gap: 20px; }
@media (min-width: 820px) { .mod { grid-template-columns: 1fr 1fr; } }
.mod__item {
  border: 1px solid var(--line); border-radius: var(--r); padding: 26px 28px;
  background: linear-gradient(165deg, var(--panel), var(--bg-raise));
  transition: border-color var(--dur-2), transform var(--dur-2);
}
.mod__item:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.mod__item h3 { font-size: 1.08rem; margin-bottom: 8px; }
.mod__item p { font-size: 14.2px; margin-bottom: 0; }
.mod__tag { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em;
            text-transform: uppercase; color: var(--ink-faint); display: block; margin-bottom: 12px; }

/* ---------- Form ---------- */
.form { display: grid; gap: 18px; }
@media (min-width: 680px) { .form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; } }
.field label {
  display: block; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin-bottom: 8px;
}
.field input, .field select, .field textarea {
  width: 100%; background: var(--panel); color: var(--ink);
  border: 1px solid var(--line-strong); border-radius: var(--r-sm);
  padding: 13px 15px; font-family: var(--font-body); font-size: 15px;
  transition: border-color var(--dur-1), box-shadow var(--dur-1);
}
.field textarea { min-height: 150px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--prime); box-shadow: 0 0 0 3px var(--prime-soft);
}
.form__note { font-size: 13px; color: var(--ink-faint); }

/* ---------- 404 ---------- */
.lost { min-height: 74vh; display: grid; place-items: center; text-align: center; }
.lost__code {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(3.6rem, 13vw, 9rem); line-height: 1;
  background: var(--grad-prime); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lost__msg { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em;
             text-transform: uppercase; color: var(--ink-faint); margin: 20px 0 28px; }