/* ============================================================
   IVANKODEV — Components
   ============================================================ */

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
  will-change: opacity, transform;
}
[data-reveal].is-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  padding: 13px 22px;
  border-radius: var(--r-sm);
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              border-color var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
  min-height: 44px;
}
.btn--primary {
  background: var(--signal);
  color: #06121f;
}
.btn--primary:hover { background: var(--signal-2); transform: translateY(-1px); box-shadow: var(--shadow-signal); }
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  border: 1px solid var(--hairline);
  color: var(--bone);
  background: transparent;
  position: relative;
}
.btn--ghost::after {
  content: "";
  position: absolute;
  left: 22px; right: 22px; bottom: 9px;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-interactive);
}
.btn--ghost:hover { border-color: var(--signal); transform: translateY(-1px); }
.btn--ghost:hover::after { transform: scaleX(1); }
.btn--ghost:active { transform: translateY(0); }

.arrow { transition: transform var(--transition-interactive); }
.btn:hover .arrow, a:hover .arrow { transform: translateX(3px); }

/* ---------- Chip ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  padding: 7px 14px;
  background: rgba(255,255,255,0.015);
}
.chip .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 0 rgba(63,174,94,0.5);
  animation: pulse 2.4s var(--ease-out) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(63,174,94,0.45); }
  70% { box-shadow: 0 0 0 7px rgba(63,174,94,0); }
  100% { box-shadow: 0 0 0 0 rgba(63,174,94,0); }
}
@media (prefers-reduced-motion: reduce) { .chip .dot { animation: none; } }

/* ---------- Placeholder tag ---------- */
.ph {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--steel);
  background: rgba(255,255,255,0.03);
  border: 1px dashed var(--hairline);
  border-radius: var(--r-sm);
  padding: 2px 8px;
  display: inline-block;
}

/* ---------- Cards ---------- */
.card {
  background: var(--ink-2);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--s-8);
}
a.card, .card[href] {
  transition: border-color var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
}
a.card:hover, .card[href]:hover {
  border-color: rgba(30,144,255,0.4);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
a.card:active { transform: translateY(0); }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: padding var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive);
  border-bottom: 1px solid transparent;
  background: rgba(10,11,15,0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 18px var(--gutter);
  transition: padding var(--transition-interactive);
}
.nav.scrolled { background: rgba(10,11,15,0.9); border-bottom-color: var(--hairline); }
.nav.scrolled .nav__inner { padding-block: 12px; }

.wordmark { display: inline-flex; align-items: center; }
.wordmark svg { height: 22px; width: auto; }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--s-8);
}
.nav__links a {
  font-size: var(--text-sm);
  color: var(--bone-2);
  font-weight: 500;
  transition: color var(--transition-interactive);
  position: relative;
}
.nav__links a:hover { color: var(--bone); }
.nav__links a[aria-current="page"] { color: var(--bone); }
.nav__links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 1.5px; background: var(--signal);
}

.nav__toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; }
.nav__toggle svg { width: 22px; height: 22px; }

@media (max-width: 880px) {
  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    height: 100vh;
    width: min(82vw, 340px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--s-6);
    background: var(--ink-2);
    border-left: 1px solid var(--hairline);
    padding: var(--gutter);
    padding-top: 96px;
    transform: translateX(100%);
    transition: transform 300ms var(--ease-out);
    z-index: 200;
    overflow-y: auto;
    box-shadow: -24px 0 60px rgba(0, 0, 0, 0.5);
  }
  .nav__links.open { transform: translateX(0); }
  .nav__links a { font-size: var(--text-lg); color: var(--bone); }
  .nav__toggle { display: inline-flex; position: relative; z-index: 201; }
  .nav__links .btn { width: 100%; justify-content: center; }
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--hairline);
  background: var(--ink-3);
  padding-block: var(--s-16) var(--s-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--s-12);
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
  font-weight: 500;
  margin-bottom: var(--s-4);
}
.footer__col a { display: block; color: var(--bone-2); font-size: var(--text-sm); padding: 5px 0; transition: color var(--transition-interactive); }
.footer__col a:hover { color: var(--bone); }
.footer__brandcopy { color: var(--bone-2); font-size: var(--text-sm); margin-top: var(--s-4); max-width: 32ch; }
.footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: var(--s-4);
  margin-top: var(--s-16);
  padding-top: var(--s-6);
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--steel);
}
.footer__bottom .wordmark svg { height: 18px; }
@media (max-width: 720px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--s-8); }
}

/* ---------- Live signal bar ---------- */
.signalbar {
  border-block: 1px solid var(--hairline);
  background: var(--ink-3);
  overflow: hidden;
}
.signalbar__inner {
  display: flex;
  gap: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  flex-wrap: wrap;
}
.signalbar__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 20px var(--gutter);
  flex: 1 1 auto;
  border-right: 1px solid var(--hairline);
  white-space: nowrap;
}
.signalbar__item:last-child { border-right: none; }
.signalbar__item .lbl { color: var(--steel); letter-spacing: 0.08em; font-size: var(--text-xs); }
.signalbar__item .val { color: var(--bone); font-weight: 500; }
.signalbar__item .val .num { color: var(--signal-2); }
@media (max-width: 720px) {
  .signalbar__item { flex: 1 1 50%; border-bottom: 1px solid var(--hairline); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: 150px;
  padding-bottom: clamp(60px, 8vw, 110px);
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  z-index: 0;
  opacity: 0.55;
  -o-object-fit: cover; object-fit: cover;
  width: 100%; height: 100%;
}
.hero__veil {
  position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(120% 90% at 20% 10%, transparent 0%, var(--ink) 78%),
              linear-gradient(180deg, rgba(10,11,15,0.4), var(--ink));
}
.hero__grid {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--s-16);
  align-items: center;
}
.hero__logo { width: 240px; max-width: 60%; margin-bottom: var(--s-6); border-radius: var(--r-md); }
.hero h1 { font-size: var(--text-hero); font-weight: 700; letter-spacing: -0.035em; }
.hero .lede { margin-top: var(--s-6); }
.hero__cta { display: flex; gap: var(--s-3); margin-top: var(--s-8); flex-wrap: wrap; }
.hero__flourish { margin-top: var(--s-8); }
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; gap: var(--s-12); }
  .hero { padding-top: 120px; }
}

/* ---------- Operations console mock ---------- */
.console {
  background: linear-gradient(180deg, var(--ink-2), var(--ink-3));
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.03);
  overflow: hidden;
}
.console__bar {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--steel);
}
.console__bar .dots { display: flex; gap: 6px; }
.console__bar .dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--hairline); display: block; }
.console__bar .live {
  margin-left: auto; display: inline-flex; align-items: center; gap: 7px;
  color: var(--live); letter-spacing: 0.1em;
}
.console__bar .live i { width: 7px; height: 7px; border-radius: 50%; background: var(--live);
  animation: pulse 2.4s var(--ease-out) infinite; }

.console__kpis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--hairline);
}
.kpi { background: var(--ink-2); padding: 16px 16px; }
.kpi .k-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); }
.kpi .k-value { font-family: var(--font-mono); font-size: var(--text-xl); font-weight: 500; color: var(--bone); margin-top: 4px; }
.kpi .k-delta { font-family: var(--font-mono); font-size: 11px; color: var(--live); margin-top: 2px; }
.kpi .k-delta.warn { color: var(--warn); }

.console__spark { padding: 14px 16px; border-top: 1px solid var(--hairline); }
.console__spark .sp-head { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); margin-bottom: 8px; }
.console__spark svg { width: 100%; height: 46px; }

.console__feed { border-top: 1px solid var(--hairline); }
.feed-row {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 12px; align-items: center;
  padding: 11px 16px;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}
.feed-row:last-child { border-bottom: none; }
.feed-row .tag { color: var(--signal-2); }
.feed-row .txt { color: var(--bone-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.feed-row .ts { color: var(--steel); }

/* ---------- Pillars / generic 3-up ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-6); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; } }

.ico {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  color: var(--signal-2);
  margin-bottom: var(--s-4);
  background: var(--signal-dim);
}
.ico svg { width: 20px; height: 20px; }

.pillar h3 { font-size: var(--text-lg); margin-bottom: 6px; }
.pillar p { color: var(--bone-2); font-size: var(--text-sm); }

/* ---------- Signal pillar (Sovereign) ---------- */
.pillar--signal {
  border-color: var(--signal);
  background: linear-gradient(180deg, rgba(30,144,255,0.06), rgba(30,144,255,0.015));
  box-shadow: 0 0 0 1px var(--signal) inset, 0 8px 32px -16px rgba(30,144,255,0.35);
  position: relative;
}
.pillar--signal::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--signal), var(--signal-2));
  border-top-left-radius: inherit;
  border-top-right-radius: inherit;
}
.pillar--signal h3 { color: var(--bone); }
.pillar--signal .spec-line { color: var(--signal-2); }
.ico--signal {
  border-color: var(--signal);
  background: rgba(30,144,255,0.10);
  color: var(--signal-2);
}
.ico--signal svg { stroke: var(--signal-2); }
.spec-line {
  font-family: var(--font-mono); font-size: var(--text-xs);
  letter-spacing: 0.06em; color: var(--steel);
  margin-top: var(--s-4); padding-top: var(--s-4);
  border-top: 1px solid var(--hairline);
}

/* ---------- Timeline ---------- */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); position: relative; }
.tl-step { background: var(--ink-2); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: var(--s-6); }
.tl-step .num { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--signal-2); letter-spacing: 0.1em; }
.tl-step h3 { font-size: var(--text-lg); margin: 8px 0 6px; }
.tl-step p { color: var(--bone-2); font-size: var(--text-sm); }
@media (max-width: 820px) { .timeline { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .timeline { grid-template-columns: 1fr; } }

/* ---------- Metric block ---------- */
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-8); }
.metric .m-num { font-family: var(--font-mono); font-size: var(--text-3xl); font-weight: 500; color: var(--bone); line-height: 1; }
.metric .m-num .unit { color: var(--signal-2); font-size: 0.5em; }
.metric .m-label { color: var(--bone-2); font-size: var(--text-sm); margin-top: var(--s-3); }
@media (max-width: 700px) { .metrics { grid-template-columns: 1fr; gap: var(--s-6); } }

/* ---------- Spec table (mono) ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}
.spec-table th { color: var(--steel); font-weight: 500; letter-spacing: 0.06em; width: 38%; padding-right: 24px; }
.spec-table td { color: var(--bone); }

/* Grouped stack tables on case study */
.stack-group-title {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--signal-2);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  margin: var(--s-9) 0 var(--s-3);
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--hairline);
}
.stack-group-title:first-child { margin-top: 0; }
.stack-table thead th {
  color: var(--steel);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 8px 0;
  border-bottom: 1px solid var(--hairline);
}
.stack-table .stack-col-what { width: 38%; padding-right: 24px; }
.stack-table .stack-col-why { width: auto; }
.stack-table tbody th { color: var(--bone); text-transform: none; letter-spacing: 0; font-size: var(--text-sm); }
@media (max-width: 600px) {
  .stack-table th, .stack-table td { padding: 10px 0; }
  .stack-table .stack-col-what { width: 44%; padding-right: 16px; }
}

/* Sovereignty callout (section 07 on JOSH OS) */
.sovereignty-callout {
  margin: var(--s-12) 0 var(--s-3);
  padding: var(--s-6) var(--s-6) var(--s-5);
  border: 1px solid var(--signal);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(30,144,255,0.06) 0%, rgba(30,144,255,0.01) 100%);
}
.eyebrow--signal { color: var(--signal); }
.stack-group-title--lg { font-size: var(--text-base); border-bottom: none; margin: var(--s-3) 0 var(--s-3); padding-bottom: 0; }
.sovereignty-intro { color: var(--bone); font-size: var(--text-base); line-height: 1.6; margin: 0; max-width: 68ch; }
.tag { display: inline-block; font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.10em; padding: 2px 6px; border-radius: 3px; vertical-align: middle; margin-left: 6px; }
.tag--signal { color: var(--signal); border: 1px solid var(--signal); background: rgba(30,144,255,0.08); }
.closing-note { color: var(--bone-2); font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.6; margin-top: var(--s-8); padding-left: var(--s-4); border-left: 2px solid var(--hairline); max-width: 72ch; }

/* ---------- Case study full-bleed card ---------- */
.casecard {
  position: relative;
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-2);
}
.casecard__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
.casecard__veil { position: absolute; inset: 0; background: linear-gradient(90deg, var(--ink-2) 30%, rgba(17,19,26,0.5)); }
.casecard__body { position: relative; padding: clamp(28px, 5vw, 56px); }

/* ---------- Pull quote ---------- */
.pullquote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--bone);
  border-left: 2px solid var(--signal);
  padding-left: var(--s-6);
  margin: var(--s-8) 0;
  max-width: 50ch;
}
.pullquote cite { display: block; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--steel); font-style: normal; margin-top: var(--s-4); letter-spacing: 0.06em; }

/* ---------- Services strip ---------- */
.svc-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--s-4); }
.svc-card { display: flex; flex-direction: column; gap: var(--s-3); }
.svc-card .sku { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--signal-2); letter-spacing: 0.1em; }
.svc-card h3 { font-size: var(--text-base); }
.svc-card .meta { font-family: var(--font-mono); font-size: 11px; color: var(--steel); line-height: 1.7; }
.svc-card .deliv { color: var(--bone-2); font-size: var(--text-sm); margin-top: auto; padding-top: var(--s-3); }
@media (max-width: 1000px) {
  .svc-strip { grid-template-columns: 1fr; }
}

/* ---------- Trust grid ---------- */
.trust h3 { font-size: var(--text-base); margin-bottom: 6px; }
.trust p { color: var(--bone-2); font-size: var(--text-sm); }

/* ---------- Notes cards ---------- */
.note-card { display: flex; flex-direction: column; height: 100%; }
.note-card .meta { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--steel); letter-spacing: 0.05em; margin-bottom: var(--s-3); }
.note-card h3 { font-size: var(--text-lg); margin-bottom: var(--s-3); }
.note-card p { color: var(--bone-2); font-size: var(--text-sm); flex: 1; }
.note-card .read { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--signal-2); margin-top: var(--s-6); display: inline-flex; gap: 6px; }

/* ---------- Accordion FAQ ---------- */
.faq { border-top: 1px solid var(--hairline); max-width: 880px; }
.faq__item { border-bottom: 1px solid var(--hairline); }
.faq__q {
  display: flex; width: 100%; align-items: center; justify-content: space-between; gap: var(--s-6);
  padding: var(--s-6) 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--bone);
  letter-spacing: -0.01em;
}
.faq__q .pm { flex-shrink: 0; width: 22px; height: 22px; position: relative; }
.faq__q .pm::before, .faq__q .pm::after {
  content: ""; position: absolute; background: var(--signal-2); transition: transform var(--transition-interactive);
}
.faq__q .pm::before { left: 0; right: 0; top: 50%; height: 1.5px; transform: translateY(-50%); }
.faq__q .pm::after { top: 0; bottom: 0; left: 50%; width: 1.5px; transform: translateX(-50%); }
.faq__item[open] .pm::after { transform: translateX(-50%) scaleY(0); }
.faq__a {
  overflow: hidden;
  color: var(--bone-2);
  font-size: var(--text-base);
  max-width: 70ch;
  height: 0;
  transition: height 320ms var(--ease-out);
}
.faq__a > div { padding-bottom: var(--s-6); }
/* native details fallback handled in motion.js for animation */

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; border-block: 1px solid var(--hairline); }
.cta-band__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.6; }
.cta-band__veil { position: absolute; inset: 0; background: radial-gradient(80% 120% at 50% 120%, transparent, var(--ink) 80%); }
.cta-band__body { position: relative; text-align: center; padding-block: clamp(72px, 11vw, 150px); }
.cta-band h2 { font-size: var(--text-3xl); max-width: 18ch; margin-inline: auto; }
.cta-band .btn { margin-top: var(--s-8); }

/* ---------- Inverted / paper section ---------- */
.paper-sec { background: var(--paper); color: var(--paper-ink); }
.paper-sec h2, .paper-sec h3 { color: var(--paper-ink); }
.paper-sec .muted { color: #5B6470; }
.paper-sec .eyebrow { color: #1565c0; }

/* ---------- Page hero (interior) ---------- */
.phero { padding-top: 150px; padding-bottom: clamp(40px, 6vw, 72px); position: relative; }
.phero h1 { font-size: var(--text-3xl); margin-top: var(--s-4); max-width: 18ch; }
.phero .lede { margin-top: var(--s-6); }
.breadcrumb { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--steel); letter-spacing: 0.06em; }
.breadcrumb a:hover { color: var(--signal-2); }

/* ---------- Architecture diagram (operating layer) ---------- */
.oplayer { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: var(--s-4); align-items: stretch; }
.oplayer__col { background: var(--ink-2); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: var(--s-6); }
.oplayer__col.center { border-color: var(--signal); box-shadow: var(--shadow-signal); background: linear-gradient(180deg, rgba(30,144,255,0.06), var(--ink-2)); }
.oplayer__col h4 { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); margin-bottom: var(--s-4); }
.oplayer__col.center h4 { color: var(--signal-2); }
.oplayer__col ul li { font-size: var(--text-sm); color: var(--bone-2); padding: 7px 0; border-bottom: 1px solid var(--hairline); }
.oplayer__col ul li:last-child { border-bottom: none; }
.oplayer__col.center ul li { color: var(--bone); }
@media (max-width: 820px) { .oplayer { grid-template-columns: 1fr; } }

/* ---------- Cadence flow ---------- */
.cadence { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-2); align-items: stretch; }
.cadence__step { background: var(--ink-2); border: 1px solid var(--hairline); border-radius: var(--r-md); padding: var(--s-6); position: relative; }
.cadence__step .wk { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--signal-2); letter-spacing: 0.1em; }
.cadence__step h4 { font-size: var(--text-base); margin: 8px 0 6px; }
.cadence__step p { color: var(--bone-2); font-size: var(--text-sm); }
@media (max-width: 820px) { .cadence { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .cadence { grid-template-columns: 1fr; } }

/* ---------- Lists with checks / x ---------- */
.checklist li, .xlist li { display: flex; gap: 12px; padding: 10px 0; color: var(--bone-2); font-size: var(--text-base); align-items: flex-start; }
.checklist li svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--live); margin-top: 4px; }
.xlist li svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--steel); margin-top: 4px; }

/* ---------- Article ---------- */
.article { padding-top: 130px; }
.article__hero-img { width: 100%; border-radius: var(--r-lg); border: 1px solid var(--hairline); margin-top: var(--s-8); aspect-ratio: 16/9; object-fit: cover; }
.prose { max-width: var(--maxw-prose); margin-inline: auto; }
.prose > * + * { margin-top: var(--s-6); }
.prose h2 { font-size: var(--text-xl); margin-top: var(--s-12); }
.prose h3 { font-size: var(--text-lg); margin-top: var(--s-8); }
.prose p { color: #cfd3dc; font-size: var(--text-lg); line-height: 1.7; }
.prose ul { margin-left: 0; }
.prose ul li { color: #cfd3dc; font-size: var(--text-lg); line-height: 1.7; padding: 6px 0 6px 22px; position: relative; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 16px; width: 8px; height: 1.5px; background: var(--signal); }
.prose strong { color: var(--bone); }
.spec-block {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--ink-2);
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--signal);
  border-radius: var(--r-md);
  padding: var(--s-6);
  color: var(--bone-2);
}
.spec-block .sb-label { color: var(--signal-2); letter-spacing: 0.1em; text-transform: uppercase; font-size: var(--text-xs); display: block; margin-bottom: 8px; }
.byline { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--steel); letter-spacing: 0.06em; }

/* ---------- Form ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-6); }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.08em; text-transform: uppercase; color: var(--bone-2); }
.field label .req { color: var(--signal-2); }
.field input, .field select, .field textarea {
  background: var(--ink-3);
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  padding: 13px 14px;
  color: var(--bone);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--signal); box-shadow: 0 0 0 3px var(--signal-dim);
}
.field textarea { resize: vertical; min-height: 96px; }
.field .err { color: var(--warn); font-family: var(--font-mono); font-size: var(--text-xs); display: none; }
.field.invalid .err { display: block; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--warn); }

.success-card {
  text-align: center;
  border: 1px solid var(--signal);
  border-radius: var(--r-lg);
  padding: clamp(40px, 7vw, 80px) var(--s-8);
  background: linear-gradient(180deg, rgba(30,144,255,0.05), var(--ink-2));
}
.success-card .ico { margin-inline: auto; width: 56px; height: 56px; }
.success-card .ico svg { width: 28px; height: 28px; }

/* ---------- 404 ---------- */
.nf { min-height: 80vh; display: grid; place-items: center; text-align: center; }
.nf .code { font-family: var(--font-mono); font-size: var(--text-hero); color: var(--signal); font-weight: 500; line-height: 1; }

/* ---------- Utility ---------- */
.divider { height: 1px; background: var(--hairline); border: none; }
.stack-6 > * + * { margin-top: var(--s-6); }
.stack-4 > * + * { margin-top: var(--s-4); }
.mt-8 { margin-top: var(--s-8); }
.mt-12 { margin-top: var(--s-12); }
.center { text-align: center; }
.tag-il { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--steel); }