/* =========================================================================
   ocup-home.css — add-on layer for the OCUP.ai homepage (Nov 2026 refresh)
   Loads AFTER styles.css. Touches no existing class; every new piece is
   prefixed "oh-". To retune colors, change the four tokens below only.
   ========================================================================= */
:root {
  /* Inherits the site's own tokens from styles.css; only --oh-human is new. */
  --oh-accent: var(--glow, #4fb3d9);   /* OCUP signal blue                       */
  --oh-human:  #e8c37a;                /* warm gold: the human / invariant voice */
  --oh-green:  var(--green, #4fae82);
  --oh-amber:  var(--amber, #d6a544);
  --oh-red:    var(--red, #c9615f);
  --oh-glass:  rgba(14, 18, 27, 0.90);  /* denser than .status-card for legibility over video */
  --oh-glass-2:rgba(255, 255, 255, 0.04);
  --oh-line:   rgba(62, 74, 96, 0.75);
  --oh-text-dim: #bcc5d3;              /* brighter than --ink-dim for AA contrast on dark cards */
  --oh-radius: 14px;
  --oh-max: var(--max-w, 1180px);
}

/* italic emphasis in headings, the thefinalsay.org voice */
.section__heading em, .hero__headline em, .oh-statement__quote em, .oh-modal__title em, .oh-subhead em {
  font-style: italic;
  color: var(--oh-human);
  font-weight: inherit;
}
.oh-glow {
  background: linear-gradient(90deg, var(--oh-accent), #9be4fa 55%, var(--oh-human));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: none;
}

/* ---------- hero phase banner ---------- */
.oh-phase-banner { border-color: rgba(79, 174, 130, 0.45) !important; border-left-color: var(--oh-green) !important; }
.oh-phase-banner .hero__status-banner__label { color: var(--oh-green); }
.oh-pulse {
  display: inline-block; width: 9px; height: 9px; border-radius: 50%;
  background: var(--oh-green); margin-right: 10px; vertical-align: middle;
  box-shadow: 0 0 0 0 rgba(79, 174, 130, .6); animation: ohPulse 2.2s infinite;
}
@keyframes ohPulse { 0%{box-shadow:0 0 0 0 rgba(79,174,130,.6)} 70%{box-shadow:0 0 0 12px rgba(79,174,130,0)} 100%{box-shadow:0 0 0 0 rgba(79,174,130,0)} }

.oh-textbtn {
  background: none; border: 0; padding: 0; cursor: pointer;
  color: var(--oh-accent); font: inherit; font-weight: 600; text-decoration: underline;
  text-underline-offset: 3px;
}
.oh-textbtn:hover { color: #fff; }

/* ---------- statement bands ---------- */
.oh-statement {
  position: relative; text-align: center;
  padding: clamp(72px, 11vw, 140px) 24px;
  margin: 0 auto; max-width: 1040px;
}
.oh-statement::before, .oh-statement::after {
  content: ""; display: block; height: 1px; width: min(320px, 50%); margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--oh-human), transparent);
}
.oh-statement::before { margin-bottom: 36px; }
.oh-statement::after  { margin-top: 36px; }
.oh-statement__eyebrow {
  font-family: "IBM Plex Mono", monospace; font-size: .8rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--oh-human); margin: 0 0 22px;
}
.oh-statement__quote {
  margin: 0; font-family: "Space Grotesk", sans-serif; font-weight: 500;
  font-size: clamp(1.7rem, 4.2vw, 3.1rem); line-height: 1.18; color: #fff;
  text-shadow: 0 2px 30px rgba(0,0,0,.6);
}
.oh-statement__sub { margin: 26px auto 0; max-width: 680px; color: var(--oh-text-dim); font-size: 1.08rem; line-height: 1.6; }
.oh-statement__ctas { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 34px; }

/* ---------- shared layout blocks ---------- */
.oh-stack, .oh-ladder, .oh-grid, .oh-bench, .oh-layers, .oh-split, .oh-port,
.oh-tiers, .oh-claims, .oh-doors, .oh-book__inner {
  max-width: var(--oh-max); margin-left: auto; margin-right: auto;
  box-sizing: border-box;
}
/* breathing room between the stacked cards/blocks inside one .section */
.section > * + * { margin-top: 1.75rem; }
.section__inner > .oh-subhead:first-child { margin-top: 0; }
.oh-subhead {
  line-height: 1.3;
  font-family: "Space Grotesk", sans-serif; font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 600; color: #fff; margin: 56px 0 12px;
}
.oh-caption { font-size: .85rem; color: var(--oh-text-dim); margin-top: 10px; text-align: center; }

/* ---------- temporal authority question ---------- */
.oh-question {
  margin: 28px 0 8px; padding: 24px 26px; border-radius: var(--oh-radius);
  background: var(--oh-glass); border: 1px solid var(--oh-line);
  border-left: 3px solid var(--oh-human); backdrop-filter: blur(8px);
}
.oh-question__label { font-family: "IBM Plex Mono", monospace; font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--oh-human); margin: 0 0 10px; }
.oh-question__text { margin: 0; font-size: clamp(1.08rem, 1.9vw, 1.3rem); line-height: 1.55; color: #fff; }
.oh-question__text strong { color: var(--oh-accent); }

/* ---------- control-layer stack ---------- */
.oh-stack { margin-top: 28px; display: grid; gap: 8px; }
.oh-stack__row {
  display: grid; grid-template-columns: 1.1fr 1.4fr 1.6fr; gap: 18px; align-items: start;
  padding: 16px 20px; border-radius: 12px; background: var(--oh-glass); border: 1px solid var(--oh-line);
  font-size: .95rem; line-height: 1.5; color: var(--oh-text-dim); backdrop-filter: blur(6px);
}
.oh-stack__row--head { background: transparent; border-color: transparent; font-family: "IBM Plex Mono", monospace; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; padding-bottom: 4px; backdrop-filter: none; }
.oh-stack__name { color: #fff; font-weight: 600; font-family: "Space Grotesk", sans-serif; }
.oh-stack__name small { display: inline-block; margin-left: 6px; padding: 2px 8px; border-radius: 99px; font-size: .68rem; letter-spacing: .1em; background: var(--oh-accent); color: var(--void, #0b0e14); vertical-align: middle; }
.oh-stack__row--ocup { border-color: rgba(79, 179, 217, .55); box-shadow: 0 0 0 1px rgba(79,179,217,.15), 0 10px 40px rgba(79,179,217,.12); color: #e9f6ff; }

/* ---------- two doors ---------- */
.oh-doors { display: grid; grid-template-columns: 1.15fr 1fr; gap: 18px; margin-top: 8px; }
.oh-door {
  display: flex; flex-direction: column; gap: 12px; text-decoration: none; color: inherit;
  padding: 30px 28px; border-radius: 20px; background: var(--oh-glass); border: 1px solid var(--oh-line);
  backdrop-filter: blur(8px); transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.oh-door:hover, .oh-door:focus-visible { transform: translateY(-4px); border-color: var(--oh-human); box-shadow: 0 18px 50px rgba(0,0,0,.45); }
.oh-door--primary { border-color: rgba(79,179,217,.5); background: linear-gradient(160deg, rgba(79,179,217,.14), var(--oh-glass) 55%); }
.oh-door__tag { font-family: "IBM Plex Mono", monospace; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--oh-accent); }
.oh-door:not(.oh-door--primary) .oh-door__tag { color: var(--oh-human); }
.oh-door__title { font-family: "Space Grotesk", sans-serif; font-size: 1.3rem; font-weight: 600; color: #fff; line-height: 1.3; }
.oh-door__body { color: var(--oh-text-dim); line-height: 1.6; }
.oh-door__go { margin-top: auto; font-weight: 600; color: #fff; }

/* ---------- audience sections ---------- */
.oh-audience { position: relative; }
.oh-audience::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse at 20% 0%, rgba(79,179,217,.10), transparent 60%);
}
.oh-audience--assurance::before { background: radial-gradient(ellipse at 80% 0%, rgba(232,195,122,.10), transparent 60%); }

/* ---------- evidence ladder ---------- */
.oh-ladder { margin-top: 40px; }
.oh-ladder__title { font-family: "IBM Plex Mono", monospace; font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; color: var(--oh-accent); margin: 0 0 18px; }
.oh-ladder__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; counter-reset: rung; }
.oh-rung {
  position: relative; padding: 22px 20px 20px; border-radius: 14px;
  background: var(--oh-glass); border: 1px solid var(--oh-line); backdrop-filter: blur(6px);
  counter-increment: rung;
}
.oh-rung::after { content: counter(rung, decimal-leading-zero); position: absolute; top: 18px; right: 18px; font-family: "IBM Plex Mono", monospace; font-size: .8rem; color: rgba(255,255,255,.28); }
.oh-rung h3 { font-family: "Space Grotesk", sans-serif; font-size: 1.08rem; color: #fff; margin: 12px 0 8px; }
.oh-rung p { margin: 0 0 10px; font-size: .93rem; line-height: 1.55; color: var(--oh-text-dim); }
.oh-rung--done { border-top: 3px solid var(--oh-green); }
.oh-rung--next { border-top: 3px solid var(--oh-amber); }
.oh-rung--frontier { border-top: 3px solid var(--oh-red); }
.oh-rung--hero { border-color: rgba(79,174,130,.55); box-shadow: 0 0 0 1px rgba(79,174,130,.2), 0 14px 46px rgba(79,174,130,.14); background: linear-gradient(170deg, rgba(79,174,130,.12), var(--oh-glass) 60%); }

.oh-pill { display: inline-block; padding: 3px 10px; border-radius: 99px; font-family: "IBM Plex Mono", monospace; font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 500; }
.oh-pill--green { background: rgba(79,174,130,.16); color: var(--oh-green); border: 1px solid rgba(79,174,130,.4); }
.oh-pill--amber { background: rgba(214,165,68,.14); color: var(--oh-amber); border: 1px solid rgba(214,165,68,.4); }
.oh-pill--red   { background: rgba(201,97,95,.14); color: var(--oh-red);   border: 1px solid rgba(201,97,95,.4); }

/* ---------- cards ---------- */
.oh-grid { display: grid; gap: 14px; }
.oh-grid--3 { grid-template-columns: repeat(3, 1fr); }
.oh-card { padding: 22px 20px; border-radius: 14px; background: var(--oh-glass); border: 1px solid var(--oh-line); backdrop-filter: blur(6px); transition: border-color .2s; }
.oh-card:hover { border-color: rgba(79,179,217,.5); }
.oh-card__num { font-family: "IBM Plex Mono", monospace; color: var(--oh-accent); font-size: .8rem; margin: 0 0 8px; }
.oh-card h4 { font-family: "Space Grotesk", sans-serif; color: #fff; font-size: 1.05rem; margin: 0 0 8px; }
.oh-card p { margin: 0; color: var(--oh-text-dim); font-size: .93rem; line-height: 1.55; }

/* ---------- benchmark families ---------- */
.oh-bench { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin-top: 8px; }
.oh-bench__item { padding: 18px 20px; border-top: 1px solid var(--oh-line); }
.oh-bench__item:nth-child(odd) { border-right: 1px solid var(--oh-line); }
.oh-bench__item h4 { margin: 0 0 6px; font-family: "Space Grotesk", sans-serif; color: #fff; font-size: 1rem; }
.oh-bench__item p { margin: 0; font-family: "IBM Plex Mono", monospace; font-size: .8rem; line-height: 1.6; color: var(--oh-text-dim); }

/* ---------- architecture layers ---------- */
.oh-layers { list-style: none; margin-top: 24px; margin-bottom: 0; display: grid; gap: 10px; }
.oh-layer { display: grid; grid-template-columns: 56px 1fr; gap: 18px; align-items: start; padding: 18px 20px; border-radius: 14px; background: var(--oh-glass); border: 1px solid var(--oh-line); backdrop-filter: blur(6px); }
.oh-layer__n { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--oh-accent); color: var(--oh-accent); font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 1.1rem; }
.oh-layer:nth-child(2) .oh-layer__n { border-color: var(--oh-human); color: var(--oh-human); box-shadow: 0 0 18px rgba(232,195,122,.35); }
.oh-layer h3 { margin: 2px 0 6px; font-family: "Space Grotesk", sans-serif; font-size: 1.08rem; color: #fff; }
.oh-layer h3 small { font-family: "IBM Plex Mono", monospace; font-size: .72rem; color: var(--oh-accent); margin-left: 6px; letter-spacing: .08em; }
.oh-layer p { margin: 0; color: var(--oh-text-dim); line-height: 1.55; font-size: .95rem; }

/* ---------- insurance / policy split ---------- */
.oh-split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 30px; }
.oh-panel { display: flex; flex-direction: column; gap: 10px; padding: 28px 26px; border-radius: 18px; background: var(--oh-glass); border: 1px solid var(--oh-line); border-top: 3px solid var(--oh-human); backdrop-filter: blur(8px); }
.oh-panel__tag { margin: 0; font-family: "IBM Plex Mono", monospace; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--oh-human); }
.oh-panel h3 { margin: 0; font-family: "Space Grotesk", sans-serif; font-size: 1.3rem; color: #fff; }
.oh-panel .btn { align-self: flex-start; margin-top: auto; }
.oh-list { margin: 6px 0 14px; padding: 0; list-style: none; }
.oh-list li { position: relative; padding-left: 22px; margin: 0 0 9px; color: var(--oh-text-dim); line-height: 1.55; font-size: .95rem; }
.oh-list li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 8px; height: 8px; border-radius: 2px; transform: rotate(45deg); background: var(--oh-accent); }

/* ---------- port admission example ---------- */
.oh-port { margin-top: 22px; }
.oh-port__label { font-family: "IBM Plex Mono", monospace; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--oh-text-dim); margin: 0 0 12px; }
.oh-port__flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 12px; align-items: stretch; }
.oh-port__step { padding: 20px; border-radius: 14px; background: var(--oh-glass); border: 1px solid var(--oh-line); backdrop-filter: blur(6px); }
.oh-port__step span { font-size: 1.6rem; }
.oh-port__step h4 { margin: 8px 0 6px; color: #fff; font-family: "Space Grotesk", sans-serif; font-size: 1.02rem; }
.oh-port__step p { margin: 0; color: var(--oh-text-dim); font-size: .92rem; line-height: 1.55; }
.oh-port__arrow { align-self: center; color: var(--oh-human); font-size: 1.6rem; }

/* ---------- program tiers ---------- */
.oh-tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; align-items: stretch; }
.oh-tier { position: relative; padding: 26px 22px; border-radius: 18px; background: var(--oh-glass); border: 1px solid var(--oh-line); backdrop-filter: blur(8px); }
.oh-tier--feature { border-color: rgba(79,179,217,.6); box-shadow: 0 16px 50px rgba(79,179,217,.14); background: linear-gradient(170deg, rgba(79,179,217,.12), var(--oh-glass) 55%); }
.oh-tier__badge { position: absolute; top: -12px; left: 22px; margin: 0; padding: 4px 12px; border-radius: 99px; background: var(--oh-accent); color: var(--void, #0b0e14); font-family: "IBM Plex Mono", monospace; font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; }
.oh-tier__name { margin: 0; font-family: "IBM Plex Mono", monospace; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--oh-accent); }
.oh-tier h3 { margin: 6px 0 8px; font-family: "Space Grotesk", sans-serif; font-size: 1.18rem; color: #fff; line-height: 1.3; }
.oh-tier__price { margin: 0 0 8px; font-family: "Space Grotesk", sans-serif; font-weight: 600; color: var(--oh-human); }
.oh-tier__for { margin: 0 0 12px; font-size: .88rem; color: var(--oh-text-dim); line-height: 1.5; }

.oh-signature { margin: 30px 0 6px; padding: 26px; border-radius: 18px; text-align: center; border: 1px solid rgba(232,195,122,.45); background: linear-gradient(180deg, rgba(232,195,122,.10), var(--oh-glass)); }
.oh-signature__label { margin: 0; font-family: "IBM Plex Mono", monospace; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--oh-human); }
.oh-signature h3 { margin: 8px 0 8px; font-family: "Space Grotesk", sans-serif; font-size: 1.35rem; color: #fff; }
.oh-signature p { margin: 0 auto; max-width: 720px; color: var(--oh-text-dim); line-height: 1.6; }

/* ---------- global ---------- */
.oh-nots { list-style: none; padding: 0; margin: 22px 0 6px; display: flex; flex-wrap: wrap; gap: 8px; }
.oh-nots li { padding: 7px 14px; border-radius: 99px; border: 1px solid var(--oh-line); background: var(--oh-glass-2); font-size: .88rem; color: #fff; }
.oh-nots li::before { content: "✕ "; color: var(--oh-human); }

/* ---------- claims ---------- */
.oh-claims { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 26px; }
.oh-claims__col { padding: 22px 24px; border-radius: 16px; background: var(--oh-glass); border: 1px solid var(--oh-line); backdrop-filter: blur(6px); }
.oh-claims__col h3 { margin: 0 0 12px; font-family: "Space Grotesk", sans-serif; font-size: 1.1rem; }
.oh-claims__col ul { margin: 0; padding: 0; list-style: none; }
.oh-claims__col li { padding: 8px 0 8px 26px; position: relative; border-top: 1px solid rgba(255,255,255,.06); color: var(--oh-text-dim); font-size: .94rem; line-height: 1.5; }
.oh-claims__col--yes { border-top: 3px solid var(--oh-green); } .oh-claims__col--yes h3 { color: var(--oh-green); }
.oh-claims__col--no  { border-top: 3px solid var(--oh-red); }   .oh-claims__col--no h3  { color: var(--oh-red); }
.oh-claims__col--yes li::before { content: "✓"; position: absolute; left: 2px; color: var(--oh-green); }
.oh-claims__col--no  li::before { content: "✕"; position: absolute; left: 2px; color: var(--oh-red); }

/* ---------- book ---------- */
.oh-book__inner { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: center; }
.oh-book__cover { display: block; border-radius: 6px; overflow: hidden; box-shadow: 0 26px 60px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.08); transform: rotate(-2deg); transition: transform .3s; }
.oh-book__cover:hover { transform: rotate(0deg) translateY(-4px); }
.oh-book__cover img { display: block; width: 100%; height: auto; }
.oh-book__cover.is-missing { display: none; }
.oh-book__inner:has(.is-missing) { grid-template-columns: 1fr; }

/* ---------- modals ---------- */
.oh-modal[hidden] { display: none; }
.oh-modal { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 20px; }
.oh-modal__backdrop { position: absolute; inset: 0; background: rgba(2, 6, 14, .78); backdrop-filter: blur(6px); }
.oh-modal__panel { position: relative; width: min(880px, 100%); max-height: calc(100vh - 40px); overflow: auto; padding: 34px 32px 28px; border-radius: 16px; background: var(--void-2, #0f131b); border: 1px solid var(--oh-line); box-shadow: 0 30px 90px rgba(0,0,0,.6); outline: none; }
.oh-modal__x { position: absolute; top: 12px; right: 14px; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--oh-line); background: transparent; color: #fff; font-size: 1.5rem; line-height: 1; cursor: pointer; }
.oh-modal__x:hover { border-color: var(--oh-human); }
.oh-modal__title { font-family: "Space Grotesk", sans-serif; font-size: clamp(1.4rem, 3vw, 2rem); color: #fff; margin: 6px 0 20px; padding-right: 40px; }
.oh-modal__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 16px; }
.oh-modal__box { padding: 18px 20px; border-radius: 14px; background: rgba(255,255,255,.03); border: 1px solid var(--oh-line); }
.oh-modal__box h3 { margin: 0 0 10px; font-family: "Space Grotesk", sans-serif; font-size: 1.02rem; }
.oh-modal__box ul { margin: 0; padding-left: 18px; color: var(--oh-text-dim); font-size: .92rem; line-height: 1.55; }
.oh-modal__box li { margin-bottom: 6px; }
.oh-modal__box--yes { border-top: 3px solid var(--oh-green); } .oh-modal__box--yes h3 { color: var(--oh-green); }
.oh-modal__box--no  { border-top: 3px solid var(--oh-red); }   .oh-modal__box--no h3  { color: var(--oh-red); }
body.oh-modal-open { overflow: hidden; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .oh-ladder__list, .oh-grid--3, .oh-tiers { grid-template-columns: 1fr 1fr; }
  .oh-port__flow { grid-template-columns: 1fr; }
  .oh-port__arrow { transform: rotate(90deg); justify-self: center; }
}
@media (max-width: 680px) {
  .oh-doors, .oh-split, .oh-claims, .oh-modal__cols, .oh-bench,
  .oh-ladder__list, .oh-grid--3, .oh-tiers { grid-template-columns: 1fr; }
  .oh-bench__item:nth-child(odd) { border-right: 0; }
  .oh-stack__row { grid-template-columns: 1fr; gap: 6px; }
  .oh-stack__row--head { display: none; }
  .oh-book__inner { grid-template-columns: 1fr; justify-items: center; text-align: left; }
  .oh-book__cover { width: 200px; }
  .oh-tier--feature { margin-top: 10px; }
  .oh-modal__panel { padding: 30px 20px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .oh-pulse { animation: none; }
  .oh-door, .oh-book__cover { transition: none; }
}

/* A card holding only buttons doesn't need its own glass box */
.section > .section__inner:has(> .section__actions:only-child) {
  background: transparent; border-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none;
  padding-top: 0; padding-bottom: 0;
}


/* =========================================================================
   Refinement pass (Nov 2026): readability, structure, Phase I/II, diagram
   ========================================================================= */

/* Body copy inside all reading cards: brighter and roomier */
.section__inner .section__body { color: #c4ccd9; line-height: 1.7; }
.section__inner .section__body--muted { color: #98a2b3; }
.section__heading { letter-spacing: -0.005em; }
.section__heading em { white-space: normal; }

/* Statement bands: a soft dark pool behind the type so it reads over the video */
.oh-statement { isolation: isolate; }
.oh-statement > * { position: relative; z-index: 1; }
.oh-statement { background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(11,14,20,.82), rgba(11,14,20,.45) 60%, transparent 85%); }

/* Labels that sit directly on the video get a chip */
.oh-ladder__title, .oh-port__label {
  display: inline-block; padding: 6px 12px; border-radius: 99px;
  background: rgba(11,14,20,.85); border: 1px solid var(--oh-line);
}

/* ---- Control-layer table: true columns on desktop, labelled stack on mobile ---- */
.oh-stack { gap: 10px; }
.oh-stack__row { grid-template-columns: 1.05fr 1.4fr 1.6fr; gap: 0; padding: 0; overflow: hidden; align-items: stretch; }
.oh-stack__row > span { padding: 18px 20px; }
.oh-stack__row > span + span { border-left: 1px solid rgba(255,255,255,.07); }
.oh-stack__row--head > span { padding: 0 20px 2px; border: 0 !important; color: #8f9aad; }
.oh-stack__name { background: rgba(255,255,255,.025); font-size: 1.02rem; }
.oh-stack__row--ocup .oh-stack__name { background: rgba(79,179,217,.10); }

/* ---- Evidence ladder: numbered, separated, connected ---- */
.oh-ladder__list { gap: 18px; }
.oh-rung { padding: 26px 22px 22px; }
.oh-rung::after {
  content: counter(rung, decimal-leading-zero); top: 16px; right: 16px;
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  border: 1px solid var(--oh-line); color: #c4ccd9; font-size: .78rem; background: rgba(255,255,255,.03);
}
.oh-rung h3 { font-size: 1.12rem; margin-top: 14px; padding-right: 40px; line-height: 1.3; }
.oh-rung p { color: var(--oh-text-dim); }

/* ---- Architecture layers: stronger separation ---- */
.oh-layers { gap: 14px; }
.oh-layer { padding: 22px 24px; border-left: 3px solid rgba(79,179,217,.55); }
.oh-layer:nth-child(2) { border-left-color: var(--oh-human); }
.oh-layer h3 { font-size: 1.14rem; margin-bottom: 8px; }

/* ---- Signature diagram ---- */
.oh-gate__figure {
  max-width: var(--oh-max); margin: 1.75rem auto 0; padding: clamp(14px, 2.4vw, 28px);
  border-radius: 18px; background: rgba(11,14,20,.92); border: 1px solid var(--oh-line);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
.oh-gate__svg { display: block; width: 100%; height: auto; }
.oh-gate__svg--tall { display: none; max-width: 440px; margin: 0 auto; }
.oh-gate__cap { margin: 14px auto 0; max-width: 820px; text-align: center; font-size: .9rem; line-height: 1.6; color: #98a2b3; }

/* ---- Phase I hardware evidence card ---- */
.oh-hw {
  max-width: var(--oh-max); margin: 2rem auto 0; display: grid; grid-template-columns: minmax(260px, 0.82fr) 1.5fr;
  border-radius: 20px; overflow: hidden; background: var(--oh-glass); border: 1px solid rgba(79,174,130,.45);
  box-shadow: 0 0 0 1px rgba(79,174,130,.12), 0 30px 80px rgba(0,0,0,.5);
}
.oh-hw__photo { position: relative; margin: 0; min-height: 100%; background: #10141c; }
.oh-hw__photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 40%; display: block; }
.oh-hw__photo figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 60px 20px 18px;
  background: linear-gradient(180deg, transparent, rgba(6,8,12,.92) 55%);
  font-family: "IBM Plex Mono", monospace; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--oh-green);
}
.oh-hw__photo figcaption strong { display: block; margin-top: 6px; font-family: "Space Grotesk", sans-serif; font-size: 1.05rem; letter-spacing: 0; text-transform: none; color: #fff; }
.oh-hw__photo figcaption small { display: block; margin-top: 4px; font-family: "IBM Plex Sans", sans-serif; font-size: .8rem; letter-spacing: 0; text-transform: none; color: #c4ccd9; }
.oh-hw__dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--oh-green); margin-right: 8px; vertical-align: middle; box-shadow: 0 0 8px var(--oh-green); }
.oh-hw__body { padding: clamp(22px, 3vw, 34px); }
.oh-hw__eyebrow { margin: 0; font-family: "IBM Plex Mono", monospace; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--oh-green); }
.oh-hw__title { margin: 8px 0 18px; font-family: "Space Grotesk", sans-serif; font-size: clamp(1.3rem, 2.4vw, 1.7rem); line-height: 1.25; color: #fff; }
.oh-hw__title em { font-style: italic; color: var(--oh-human); }
.oh-hw__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; }
.oh-hw__stats > div { padding: 14px 12px; border-radius: 12px; background: rgba(255,255,255,.035); border: 1px solid var(--oh-line); text-align: center; }
.oh-hw__stats b { display: block; font-family: "Space Grotesk", sans-serif; font-size: 1.45rem; color: #fff; line-height: 1.1; }
.oh-hw__stats > div:first-child b, .oh-hw__stats > div:last-child b { color: var(--oh-green); }
.oh-hw__stats span { display: block; margin-top: 6px; font-size: .76rem; line-height: 1.35; color: #aeb8c8; }
.oh-hw__seq { list-style: none; margin: 0 0 14px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.oh-hw__seq li { display: grid; grid-template-columns: auto 1fr; gap: 10px; padding: 14px; border-radius: 12px; background: rgba(255,255,255,.025); border: 1px solid var(--oh-line); }
.oh-hw__seq li > span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--oh-accent); color: var(--oh-accent); font-family: "IBM Plex Mono", monospace; font-size: .74rem; }
.oh-hw__seq li:nth-child(3) > span { border-color: var(--oh-green); color: var(--oh-green); }
.oh-hw__seq h4 { margin: 4px 0 6px; font-family: "Space Grotesk", sans-serif; font-size: .98rem; color: #fff; }
.oh-hw__seq p { margin: 0 0 8px; font-size: .84rem; line-height: 1.5; color: var(--oh-text-dim); }
.oh-hw__seq code { font-family: "IBM Plex Mono", monospace; font-size: .74rem; color: var(--oh-green); background: rgba(79,174,130,.1); padding: 2px 7px; border-radius: 6px; }
.oh-hw__runs { margin: 0 0 10px; font-family: "IBM Plex Mono", monospace; font-size: .78rem; color: #c4ccd9; }
.oh-hw__bound { margin: 0 0 14px; padding: 12px 14px; border-radius: 10px; border-left: 3px solid var(--oh-amber); background: rgba(214,165,68,.07); font-size: .86rem; line-height: 1.55; color: #c4ccd9; }
.oh-hw__bound strong { color: #fff; }
.oh-hw__links { display: flex; flex-wrap: wrap; gap: 18px; font-size: .9rem; }

/* ---- Phase II: the next experiment ---- */
.oh-next {
  max-width: var(--oh-max); margin: 1.75rem auto 0; padding: clamp(24px, 3.4vw, 40px);
  border-radius: 20px; border: 1px solid rgba(214,165,68,.55);
  background: linear-gradient(160deg, rgba(214,165,68,.13), rgba(14,18,27,.94) 45%);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
.oh-next__title { margin: 14px 0 8px; font-family: "Space Grotesk", sans-serif; font-size: clamp(1.45rem, 3vw, 2.1rem); line-height: 1.2; color: #fff; }
.oh-next__title em { font-style: italic; color: var(--oh-human); }
.oh-next__lede { margin: 0; max-width: 760px; font-size: clamp(1.02rem, 1.6vw, 1.18rem); line-height: 1.6; color: #e3e8ef; }
.oh-next__compare { display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: stretch; margin: 24px 0; }
.oh-next__col { padding: 18px 20px; border-radius: 14px; background: rgba(11,14,20,.6); border: 1px solid var(--oh-line); }
.oh-next__col p { margin: 0; color: #d3d9e3; line-height: 1.55; }
.oh-next__col .oh-next__k { margin-bottom: 8px; font-family: "IBM Plex Mono", monospace; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.oh-next__col--done { border-top: 3px solid var(--oh-green); } .oh-next__col--done .oh-next__k { color: var(--oh-green); }
.oh-next__col--todo { border-top: 3px solid var(--oh-amber); } .oh-next__col--todo .oh-next__k { color: var(--oh-amber); }
.oh-next__arrow { align-self: center; font-size: 1.6rem; color: var(--oh-human); }
.oh-next__goals { margin: 0 0 22px; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; counter-reset: goal; }
.oh-next__goals li { counter-increment: goal; position: relative; padding: 16px 16px 16px 50px; border-radius: 12px; background: rgba(11,14,20,.55); border: 1px dashed rgba(214,165,68,.45); font-size: .9rem; line-height: 1.5; color: #c4ccd9; }
.oh-next__goals li::before { content: counter(goal); position: absolute; left: 14px; top: 14px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; border: 1px solid var(--oh-amber); color: var(--oh-amber); font-family: "IBM Plex Mono", monospace; font-size: .74rem; }
.oh-next__goals b { display: block; color: #fff; font-family: "Space Grotesk", sans-serif; margin-bottom: 2px; }
.oh-next__cta { display: flex; flex-wrap: wrap; gap: 14px 18px; align-items: center; }
.oh-next__note { font-size: .9rem; color: #aeb8c8; max-width: 520px; }
.oh-phase-next { margin-top: .6rem !important; padding-top: .6rem; border-top: 1px solid rgba(255,255,255,.08); }
.oh-phase-next strong { color: var(--oh-amber); }

/* ---- Responsive for the refinement ---- */
@media (max-width: 980px) {
  .oh-hw { grid-template-columns: 1fr; }
  .oh-hw__photo { aspect-ratio: 4 / 3; min-height: 0; }
  .oh-hw__stats { grid-template-columns: repeat(2, 1fr); }
  .oh-hw__seq { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .oh-gate__svg--wide { display: none; }
  .oh-gate__svg--tall { display: block; }
  .oh-next__compare { grid-template-columns: 1fr; }
  .oh-next__arrow { transform: rotate(90deg); justify-self: center; }
}
@media (max-width: 680px) {
  .oh-stack__row { grid-template-columns: 1fr; }
  .oh-stack__row > span { padding: 12px 16px; }
  .oh-stack__row > span + span { border-left: 0; border-top: 1px solid rgba(255,255,255,.07); }
  .oh-stack__row > span[data-label]::before {
    content: attr(data-label); display: block; margin-bottom: 4px;
    font-family: "IBM Plex Mono", monospace; font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--oh-accent);
  }
  .oh-stack__row > span[data-label="Does not prove"]::before, .oh-stack__row > span[data-label="Still required"]::before { color: var(--oh-human); }
  .oh-hw__photo { aspect-ratio: 3 / 4; }
}
@media (max-width: 680px) { .oh-gate__cap { font-size: .82rem; } }