/* ══════════════════════════════════════════════
   CYTHERAI — Design System v3
   Surface: archival paper. Dark: restricted states only.
   Brass: state transitions only.
   Serves: contact.html, pages/*.html, index.html (shared components)
   ══════════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
    /* Surfaces */
    --paper:           #E7DFD1;
    --paper-dense:     #DDD4C4;
    --paper-lifted:    #F1EBE0;

    /* Ink */
    --ink:             #171612;
    --ink-mid:         #4D493F;
    --ink-quiet:       #7B7467;

    /* Structure */
    --rule:            #B9AE97;

    /* State signals */
    --brass:           #7A5B1B;
    --dark-restricted: #202226;

    /* Typography */
    --font-serif: Georgia, 'Times New Roman', serif;
    --font-sans:  system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono:  'SF Mono', Menlo, 'Courier New', monospace;

}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    font-family: var(--font-mono);
    background: var(--paper);
    color: var(--ink);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── SKIP LINK ── */
.skip-link {
    position: absolute; top: -40px; left: 0;
    background: var(--ink); color: var(--paper);
    padding: .5rem 1rem; font-family: var(--font-mono);
    font-size: .8rem; z-index: 10001;
    transition: top .2s;
    text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ── NAVIGATION ── */
.nav {
    position: sticky; top: 0; z-index: 1000;
    height: 64px;
    background: rgba(231,223,209,.94);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom: 1px solid var(--rule);
    transition: background .3s, box-shadow .3s;
}
.nav.scrolled { box-shadow: 0 1px 24px rgba(23,22,18,.07); }
.nav-container {
    max-width: 1200px; margin: 0 auto; height: 100%;
    display: flex; align-items: center;
    justify-content: space-between; padding: 0 2rem;
}
.nav-brand {
    font-family: var(--font-mono); font-size: .8rem;
    letter-spacing: .22em; color: var(--ink);
    text-decoration: none;
}
.nav-links {
    display: flex; gap: 2.5rem; list-style: none;
}
.nav-links a {
    font-family: var(--font-mono); font-size: .62rem;
    letter-spacing: .16em; color: var(--ink-quiet);
    transition: color .2s; text-transform: uppercase;
    text-decoration: none;
}
.nav-links a:hover { color: var(--ink); }
@media (max-width: 900px) { .nav-links { display: none; } }

/* ── SECTION COMMONS ── */
.section { padding: 6rem 2rem; }

.hero-stamp {
    font-family: var(--font-mono); font-size: .6rem;
    letter-spacing: .35em; color: var(--brass);
    text-transform: uppercase; margin-bottom: 1.75rem;
}

/* ── DOCUMENT CONTROL ── */
.doc-control {
    background: var(--paper-dense);
    border-bottom: 1px solid var(--rule);
}
.doc-control-row {
    height: 26px;
    display: flex; align-items: center;
    padding: 0 24px;
    justify-content: space-between;
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .18em; text-transform: uppercase;
    color: var(--ink-quiet);
}
.doc-control-scope { color: var(--brass); }

/* ── DOCUMENT SECTION ── */
.doc-section {
    display: flex;
    border-top: 1px solid var(--rule);
}

/* ── DOCUMENT RAIL ── */
.doc-rail {
    width: 148px; flex-shrink: 0;
    border-right: 1px solid var(--rule);
    background: var(--paper-dense);
    padding: 28px 18px 28px 22px;
}
.doc-rail-brand {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .28em; color: var(--ink-quiet);
    text-transform: uppercase;
    display: block; margin-bottom: 28px;
}
.doc-rail-strand {
    position: relative; padding-left: 8px; flex: 1;
}
.doc-rail-strand::before {
    content: ''; position: absolute;
    left: 0; top: 0; width: 1px; height: 100%;
    background: var(--rule);
}
.doc-rail-strand::after {
    content: ''; position: absolute;
    left: 0; top: 0; width: 1px;
    height: var(--strand-progress, 20%);
    background: var(--brass);
    transition: height .3s;
}
.rail-nav {
    display: flex; flex-direction: column;
    gap: 16px; padding-top: 4px;
}
.rail-link {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; color: var(--rule);
    text-transform: uppercase; text-decoration: none;
}
.rail-link.active { color: var(--brass); }

.doc-rail-stamp {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .18em; color: var(--rule);
    text-transform: uppercase;
    display: block; margin-bottom: 10px;
}
.doc-rail-meta {
    font-family: var(--font-mono); font-size: 8px;
    letter-spacing: .14em; color: var(--ink-quiet);
    text-transform: uppercase; line-height: 2.1;
}
.doc-rail-note {
    margin-top: 20px; padding-top: 20px;
    border-top: 1px solid var(--rule);
    font-family: var(--font-mono); font-size: 8px;
    letter-spacing: .1em; color: var(--rule);
    line-height: 2.1; text-transform: uppercase;
}

@media (max-width: 768px) {
    .doc-rail { display: none; }
}

/* ── DOCUMENT CONTENT ── */
.doc-content {
    flex: 1;
    padding: 38px 44px 38px 38px;
}
@media (max-width: 768px) {
    .doc-content { padding: 26px 20px; }
}

/* ── SECTION STAMP (mobile) ── */
.section-stamp {
    display: none;
    height: 24px;
    background: var(--paper-dense);
    border-bottom: 1px solid var(--rule);
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; text-transform: uppercase;
}
.section-stamp-id { color: var(--brass); }
.section-stamp-page { color: var(--ink-quiet); }

@media (max-width: 768px) {
    .section-stamp { display: flex; }
}

/* ── SECTION STRIP ── */
.section-strip {
    height: 28px;
    border-top: 1px solid var(--rule);
    display: flex; align-items: center;
    padding: 0 24px;
    justify-content: space-between;
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .2em; text-transform: uppercase;
    color: var(--ink-quiet);
}
@media (max-width: 768px) {
    .section-strip { height: 24px; padding: 0 16px; }
}

/* ── PROOF FRAGMENT ── */
.proof-fragment {
    border-left: 2px solid var(--brass);
    padding: 14px 18px;
    background: var(--paper-lifted);
    max-width: 480px;
}
.proof-fragment-source {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .18em; color: var(--ink-quiet);
    text-transform: uppercase;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--rule);
}
.proof-fragment-body {
    font-family: var(--font-mono); font-size: 12px;
    color: var(--ink-mid); line-height: 1.85;
    font-style: italic;
    margin-bottom: 10px;
}
.proof-fragment-field {
    font-family: var(--font-mono); font-size: 11px;
    color: var(--ink-quiet);
    padding-left: 12px;
    border-left: 1px solid var(--rule);
    line-height: 1.7;
}

/* ── EXHIBITS ── */
.exhibits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}
.doc-exhibit {
    background: var(--paper);
    border: 1px solid var(--rule);
}
.doc-exhibit-header {
    height: 28px;
    border-bottom: 1px solid var(--rule);
    display: flex; align-items: center;
    padding: 0 14px;
    justify-content: space-between;
    background: var(--paper-dense);
}
.doc-exhibit-header-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .16em; color: var(--ink-quiet);
    text-transform: uppercase;
}
.doc-exhibit-header-id {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .1em; color: var(--ink-quiet);
}
.doc-exhibit-body {
    padding: 16px 14px;
}
.doc-exhibit-type {
    font-family: var(--font-mono); font-size: 8px;
    letter-spacing: .18em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 8px;
}
.doc-exhibit-title {
    font-family: var(--font-serif); font-size: 13px;
    color: var(--ink); font-style: italic;
    line-height: 1.35; margin-bottom: 14px;
}
.doc-exhibit table {
    width: 100%; border-collapse: collapse;
    margin-bottom: 12px;
}
.doc-exhibit table tr {
    border-bottom: 1px solid var(--rule);
}
.doc-exhibit table tr:last-child {
    border-bottom: none;
}
.doc-exhibit table td {
    font-family: var(--font-mono);
    padding: 5px 0;
}
.doc-exhibit table td:first-child {
    font-size: 9px; text-transform: uppercase;
    letter-spacing: .1em; color: var(--ink-quiet);
}
.doc-exhibit table td:last-child {
    font-size: 10px; color: var(--ink-mid);
    text-align: right;
}
.doc-exhibit-certification {
    margin-bottom: 10px;
    padding: 9px 10px;
    background: var(--paper-lifted);
    border: 1px solid var(--rule);
}
.doc-exhibit-certification-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 4px;
}
.doc-exhibit-certification-value {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--ink-mid); line-height: 1.65;
}
.doc-exhibit-status-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 4px;
}
.doc-exhibit-status-value {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--ink-mid); line-height: 1.75;
}
.doc-exhibit-outcome {
    padding: 9px 11px;
    background: var(--paper-lifted);
    border-left: 2px solid var(--brass);
    margin-bottom: 12px;
}
.doc-exhibit-outcome-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; color: var(--brass);
    text-transform: uppercase; margin-bottom: 3px;
}
.doc-exhibit-outcome-value {
    font-family: var(--font-mono); font-size: 11px;
    color: var(--ink-mid); line-height: 1.6;
}
.doc-exhibit-footer {
    display: flex; justify-content: space-between;
    align-items: center;
    padding-top: 10px;
    border-top: 1px solid var(--rule);
}
.doc-exhibit-disclosure {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .1em; color: var(--ink-quiet);
    text-transform: uppercase;
}
.doc-exhibit-action {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .12em; text-transform: uppercase;
    color: var(--ink-mid); text-decoration: none;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 1px;
}

@media (max-width: 768px) {
    .exhibits-grid { grid-template-columns: 1fr; }
}

/* ── EXHIBIT RESTRICTED (dark state) ── */
.doc-exhibit-restricted {
    background: var(--dark-restricted);
    border: 1px solid rgba(185,174,151,.12);
}
/* Paper fold — 4px strip at top interior */
.doc-exhibit-restricted::before {
    content: '';
    display: block;
    height: 4px;
    background: var(--paper);
}
.doc-exhibit-restricted .doc-exhibit-header {
    background: rgba(255,255,255,.03);
    border-bottom-color: rgba(185,174,151,.08);
}
.doc-exhibit-restricted .doc-exhibit-header-label {
    color: rgba(185,174,151,.3);
}
.doc-exhibit-restricted .doc-exhibit-header-id {
    color: rgba(185,174,151,.18);
}
.doc-exhibit-restricted .doc-exhibit-type {
    color: rgba(185,174,151,.22);
}
.doc-exhibit-restricted .doc-exhibit-title {
    color: rgba(231,223,209,.16);
    user-select: none;
}
.doc-exhibit-restricted .doc-exhibit-footer {
    border-top-style: dashed;
    border-top-color: rgba(185,174,151,.1);
    flex-direction: column;
    text-align: center;
    gap: 8px;
}
.doc-exhibit-restricted .doc-exhibit-disclosure {
    color: rgba(122,91,27,.55);
    line-height: 1.9;
}
.doc-exhibit-restricted .doc-exhibit-action {
    color: rgba(122,91,27,.52);
    border: 1px solid rgba(122,91,27,.22);
    border-bottom: 1px solid rgba(122,91,27,.22);
    padding: 7px 16px;
    display: inline-block;
}

/* ── VALIDATION PANEL ── */
.validation-panel {
    background: var(--paper-lifted);
    border: 1px solid var(--rule);
    padding: 20px;
}
.validation-legend {
    display: flex; gap: 20px;
    padding-bottom: 10px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--rule);
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .1em; text-transform: uppercase;
}
.validation-legend-verified { color: var(--brass); }
.validation-legend-external { color: var(--ink-quiet); }
.validation-legend-hidden   { color: var(--rule); }

.validation-header {
    display: grid;
    grid-template-columns: 1fr 64px 64px 64px;
    gap: 8px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 12px;
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; text-transform: uppercase;
}
.validation-col-metric     { color: var(--ink-quiet); }
.validation-col-cyther     { color: var(--brass); text-align: right; }
.validation-col-competitor { color: var(--rule); text-align: right; }

.validation-rows {
    display: flex; flex-direction: column; gap: 12px;
}
.validation-row-data {
    display: grid;
    grid-template-columns: 1fr 64px 64px 64px;
    gap: 8px;
    margin-bottom: 4px;
    font-family: var(--font-mono); font-size: 10px;
}
.validation-row-label {
    color: var(--ink-mid);
    letter-spacing: .04em;
    text-transform: uppercase;
}
.validation-row-cyther {
    color: var(--brass);
    text-align: right;
    font-weight: 500;
}
.validation-row-competitor {
    color: var(--rule);
    text-align: right;
}
.validation-bar {
    height: 2px;
    background: var(--paper-dense);
}
.validation-bar-fill {
    height: 100%;
    background: var(--ink-quiet);
}

.validation-methodology {
    margin-top: 18px;
    padding-top: 15px;
    border-top: 1px solid var(--rule);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 22px;
}
.validation-methodology-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .14em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 4px;
}
.validation-methodology-value {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--ink-mid); line-height: 1.75;
}

@media (max-width: 768px) {
    .validation-methodology { grid-template-columns: 1fr; }
    .validation-hide-mobile { display: none; }
}

/* ── VALIDATION FOOTNOTE ── */
.validation-footnote {
    margin-top: 16px;
}
.validation-footnote-rule {
    border: none;
    border-top: 1px solid var(--rule);
    margin-bottom: 10px;
}
.validation-footnote-dagger {
    display: block;
    font-family: var(--font-mono); font-size: 9px;
    color: var(--ink-quiet);
    margin-bottom: 4px;
}
.validation-footnote-note {
    font-family: var(--font-mono); font-size: 9px;
    color: var(--ink-quiet);
    line-height: 1.8;
    margin: 0;
}

/* ── CLEARANCE GRID ── */
.clearance-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}
.clearance-path {
    background: var(--paper);
    border: 1px solid var(--rule);
    padding: 20px;
}
.clearance-path-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .18em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 12px;
}
.clearance-path-title {
    font-family: var(--font-serif); font-size: 13px;
    color: var(--ink-quiet);
    font-style: italic; margin-bottom: 9px;
}
.clearance-path-body {
    font-family: var(--font-mono); font-size: 11px;
    color: var(--ink-mid); line-height: 1.85;
    margin-bottom: 16px;
}
.clearance-path-note {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .1em; color: var(--ink-quiet);
    text-transform: uppercase;
    padding-top: 12px;
    border-top: 1px solid var(--rule);
}

/* Featured path — Capability Review */
.clearance-path-featured {
    border-color: var(--brass);
    position: relative;
}
.clearance-path-featured::before {
    content: '';
    position: absolute;
    top: -1px; left: 16px; right: 16px;
    height: 2px;
    background: var(--brass);
}
.clearance-path-featured .clearance-path-label {
    color: var(--brass);
}
.clearance-path-featured .clearance-path-title {
    color: var(--ink);
}

.clearance-cta-primary {
    display: block;
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: .14em; text-transform: uppercase;
    color: var(--paper); background: var(--ink);
    text-decoration: none;
    padding: 10px 12px; text-align: center;
    margin-bottom: 8px; font-weight: 500;
}
.clearance-cta-secondary {
    display: block;
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: .14em; text-transform: uppercase;
    color: var(--ink-mid); background: transparent;
    text-decoration: none;
    padding: 10px 12px; text-align: center;
    margin-bottom: 8px;
    border: 1px solid var(--rule);
}

@media (max-width: 768px) {
    .clearance-grid { grid-template-columns: 1fr; }
    .clearance-path-featured::before {
        left: 0; right: 0;
    }
}

/* ── BUTTONS ── */
.btn {
    font-family: var(--font-mono); font-size: .7rem;
    letter-spacing: .14em; text-transform: uppercase;
    padding: .75rem 1.5rem; cursor: pointer;
    border: 1px solid var(--rule);
    transition: all .22s;
    display: inline-block;
    background: transparent;
    color: var(--ink);
}
.btn-primary {
    background: var(--ink); color: var(--paper);
    border-color: var(--ink); font-weight: 500;
}
.btn-primary:hover { background: var(--ink-mid); border-color: var(--ink-mid); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.btn-secondary {
    background: transparent; color: var(--ink-mid);
    border-color: var(--rule);
}
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

/* ── FORMS ── */
.form-group { margin-bottom: 1.5rem; }
.form-label {
    display: block; font-family: var(--font-mono);
    font-size: .7rem; letter-spacing: .12em;
    text-transform: uppercase; color: var(--ink-quiet);
    margin-bottom: .5rem;
}
.form-input,
.form-textarea {
    width: 100%; padding: .75rem 1rem;
    background: var(--paper-lifted);
    border: 1px solid var(--rule);
    border-radius: 4px; color: var(--ink);
    font-family: var(--font-mono); font-size: .9rem;
    transition: border-color .2s;
    outline: none;
}
.form-input:focus,
.form-textarea:focus { border-color: var(--brass); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-hint {
    font-size: .8rem; color: var(--ink-quiet);
    margin-top: .35rem;
}

/* ── FOOTER ── */
.footer {
    background: var(--paper-dense);
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--rule);
}
.footer-container {
    max-width: 1200px; margin: 0 auto;
    display: flex; justify-content: space-between;
    align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer-text {
    font-family: var(--font-mono); font-size: .62rem;
    letter-spacing: .14em; color: var(--ink-quiet);
}
.footer-links {
    display: flex; gap: 2rem; list-style: none;
    font-family: var(--font-mono); font-size: .62rem;
    letter-spacing: .1em;
}
.footer-links a {
    color: var(--ink-quiet); text-decoration: none;
    transition: color .2s;
}
.footer-links a:hover { color: var(--ink); }

/* ── COMMAND PALETTE (dark restricted overlay) ── */
.command-palette { display: none; }
.command-palette.active {
    display: flex; position: fixed; inset: 0;
    background: rgba(0,0,0,.55); z-index: 10000;
    align-items: flex-start; justify-content: center;
    padding-top: 14vh;
}
.command-container {
    background: var(--dark-restricted); border: 1px solid var(--rule);
    width: 100%; max-width: 600px; overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,.4);
    border-radius: 4px;
}
.command-input {
    width: 100%; padding: 1rem 1.25rem; background: transparent;
    border: none; border-bottom: 1px solid rgba(185,174,151,.15);
    color: var(--paper); font-family: var(--font-mono);
    font-size: .875rem; outline: none;
}
.command-results { max-height: 400px; overflow-y: auto; }
.command-item {
    padding: .875rem 1.25rem; cursor: pointer;
    border-bottom: 1px solid rgba(185,174,151,.08);
}
.command-item:hover, .command-item.selected { background: rgba(255,255,255,.05); }
.command-title {
    font-family: var(--font-mono); font-size: .7rem;
    letter-spacing: .1em; color: var(--paper);
}
.command-description { font-size: .72rem; color: var(--ink-quiet); margin-top: .2rem; }

/* ── KEYBOARD NAV ── */
body.keyboard-nav :focus-visible {
    outline: 2px solid var(--brass);
    outline-offset: 2px;
}
body:not(.keyboard-nav) :focus { outline: none; }

/* ── RAIL MARGINALIA ── */
.rail-marginalia {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--rule);
    font-size: 7.5px;
    color: var(--ink-quiet);
    line-height: 2.2;
    font-style: italic;
    letter-spacing: .04em;
    opacity: .55;
}
.marginalia-ref {
    color: var(--brass);
    opacity: .7;
    font-style: normal;
}

/* ── GATE CHECKPOINT ── */
.gate {
    position: relative;
    padding: 6px 0;
    margin: 10px 0 4px;
}
.gate::before {
    content: '';
    position: absolute; left: 0; right: 0; top: 50%;
    border-top: 1px dashed var(--rule);
}
.gate span {
    position: relative; z-index: 1;
    background: var(--paper-lifted);
    padding: 0 10px;
    font-size: 7.5px; letter-spacing: .18em;
    color: var(--ink-quiet);
    text-transform: uppercase;
}

/* ── PATENT RECORD ── */
.patent-record {
    background: var(--paper-lifted);
    border: 1px solid var(--rule);
    margin-bottom: 20px;
}
.patent-record-header {
    height: 28px;
    border-bottom: 1px solid var(--rule);
    display: flex; align-items: center;
    padding: 0 18px; justify-content: space-between;
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .16em; color: var(--ink-quiet);
    text-transform: uppercase;
}
.patent-record-body { padding: 22px 18px; }
.patent-record-title {
    font-family: var(--font-serif); font-size: 15px;
    font-weight: 400; color: var(--ink);
    line-height: 1.45; font-style: italic;
    margin-bottom: 14px; max-width: 560px;
}

/* ── PROTOCOL BLOCK ── */
.protocol-block {
    background: var(--paper-lifted);
    border: 1px solid var(--rule);
}
.protocol-procedure {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 0;
    padding: 20px 18px;
    border-bottom: 1px solid var(--rule);
}
.protocol-procedure:last-child { border-bottom: none; }
.protocol-num {
    font-family: var(--font-serif); font-size: 22px;
    color: var(--rule); font-style: italic; line-height: 1;
}
.protocol-label {
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: .18em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 6px;
}
.protocol-body {
    font-family: var(--font-mono); font-size: 11px;
    color: var(--ink-mid); line-height: 1.85;
}

/* ── MODE GRID ── */
.mode-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px; margin-top: 20px;
}
.mode-card {
    background: var(--paper);
    border: 1px solid var(--rule);
    padding: 16px;
}
.mode-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: .18em; color: var(--ink-quiet);
    text-transform: uppercase; margin-bottom: 8px;
}
.mode-title {
    font-family: var(--font-mono); font-size: 12px;
    color: var(--ink); margin-bottom: 6px;
}
.mode-body {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--ink-mid); line-height: 1.8;
}

@media (max-width: 768px) {
    .mode-grid { grid-template-columns: 1fr; }
}

/* ── EXHIBIT C HOVER DECLASSIFICATION ── */
.doc-exhibit-restricted { position: relative; }
.doc-exhibit-restricted .redact-veil {
    transition: opacity 1.8s cubic-bezier(.16,1,.3,1);
}
.doc-exhibit-restricted:hover .redact-veil {
    opacity: .35;
}
.doc-exhibit-restricted::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 0;
    background: rgba(122,91,27,.06);
    transition: height .6s cubic-bezier(.16,1,.3,1);
}
.doc-exhibit-restricted:hover::after {
    height: 3px;
}
@media (prefers-reduced-motion: reduce) {
    .doc-exhibit-restricted .redact-veil,
    .doc-exhibit-restricted::after {
        transition: none;
    }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── MOBILE CADENCE ── */
@media (max-width: 768px) {
    .doc-control-row {
        height: auto; min-height: 22px;
        flex-wrap: wrap;
        padding: 6px 16px;
        gap: 4px 16px;
    }

    /* R1: 32px above every section stamp — chapter breath */
    .section-stamp { margin-top: 32px; }
    .doc-section:first-of-type .section-stamp { margin-top: 0; }

    /* R4: 40px re-entry after dark wall — register change signal */
    .section-after-dark > .section-stamp { margin-top: 40px; }

    /* R2: proof fragment extra breathing room */
    .proof-fragment { margin-top: 20px; }

    /* Exhibit C: full width dark barrier */
    .doc-exhibit-restricted { width: 100%; }
}