/* ── Whitepaper pages ─────────────────────────────────────────────────────── */

/* Hero */
.wp-hero { position:relative; padding:140px 0 64px; overflow:hidden; background:linear-gradient(165deg,#0A2A4A 0%,#071D34 100%); }
.wp-hero-meta { display:flex; align-items:center; gap:12px; margin-bottom:20px; flex-wrap:wrap; }
.wp-back { font-family:var(--font-mono); font-size:.78rem; color:var(--text-on-navy-muted); text-decoration:none; transition:color var(--transition); letter-spacing:.04em; }
.wp-back:hover { color:#fff; }
.wp-series-badge { font-family:var(--font-mono); font-size:.72rem; font-weight:700; letter-spacing:.12em; color:var(--blue-soft); background:rgba(76,130,232,.18); border:1px solid rgba(76,130,232,.4); padding:4px 12px; border-radius:999px; }
.wp-audience-badge { font-family:var(--font-mono); font-size:.7rem; color:var(--text-on-navy-muted); background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.15); padding:4px 12px; border-radius:999px; }
.wp-hero-title { font-size:clamp(1.9rem,3.8vw,3rem); font-weight:700; color:#fff; line-height:1.2; letter-spacing:-.02em; margin-bottom:16px; max-width:800px; }
.wp-hero-sub { font-size:1.05rem; color:var(--text-on-navy-muted); max-width:660px; margin-bottom:14px; line-height:1.65; }
.wp-hero-byline { font-family:var(--font-mono); font-size:.78rem; color:var(--text-on-navy-muted); margin-bottom:28px; }
.wp-hero-byline strong { color:var(--gold); }
.wp-hero-actions { display:flex; gap:14px; flex-wrap:wrap; }

/* Layout */
.wp-layout { background:#fff; padding:0 0 80px; }
.wp-container { display:grid; grid-template-columns:240px 1fr; gap:64px; align-items:start; padding-top:56px; }

/* TOC */
.wp-toc { position:sticky; top:88px; }
.toc-title { font-family:var(--font-mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:var(--text-faint); margin-bottom:14px; }
.toc-nav { display:flex; flex-direction:column; gap:2px; }
.toc-link { font-size:.88rem; color:var(--text-muted); text-decoration:none; padding:6px 12px; border-left:2px solid var(--border); line-height:1.4; transition:all var(--transition); }
.toc-link:hover { color:var(--navy); border-color:var(--blue); background:var(--bg-alt); }
.toc-link.active { color:var(--navy); border-color:var(--blue); font-weight:600; background:var(--blue-pale); }
.toc-patent { margin-top:28px; padding:16px; background:var(--gold-pale); border:1px solid rgba(201,166,70,.35); border-radius:8px; }
.toc-patent-label { font-family:var(--font-mono); font-size:.65rem; letter-spacing:.12em; text-transform:uppercase; color:var(--gold); margin-bottom:4px; }
.toc-patent-num { font-family:var(--font-mono); font-size:.82rem; font-weight:700; color:#97781E; margin-bottom:2px; }
.toc-patent-status { font-size:.75rem; color:var(--text-muted); }

/* Content */
.wp-content { max-width:720px; min-width:0; }
.wp-content section { padding-top:8px; margin-bottom:8px; }
.wp-content h2 { font-size:1.55rem; color:var(--navy); margin:3rem 0 .8rem; padding-bottom:10px; border-bottom:2px solid var(--blue); }
.wp-content h3 { font-size:1.15rem; color:var(--navy); margin:2rem 0 .6rem; }
.wp-content h4 { font-size:1rem; color:var(--blue); margin:1.4rem 0 .5rem; }
.wp-content p { color:var(--text-muted); line-height:1.75; margin-bottom:1rem; }
.wp-content ul,.wp-content ol { padding-left:1.5rem; margin-bottom:1rem; }
.wp-content li { color:var(--text-muted); line-height:1.7; margin-bottom:.4rem; }
.wp-content strong { color:var(--navy); }
.wp-content code { font-family:var(--font-mono); font-size:.85em; background:var(--bg-alt); border:1px solid var(--border); padding:2px 6px; border-radius:4px; color:var(--blue); }
.wp-content pre { background:var(--navy); color:#C8D8E8; font-family:var(--font-mono); font-size:.82rem; padding:20px 24px; border-radius:8px; overflow-x:auto; margin:1.5rem 0; line-height:1.65; }
.wp-content pre code { background:none; border:none; padding:0; color:inherit; }
.wp-content .kicker { font-family:var(--font-mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:var(--blue); display:block; margin-bottom:6px; }

/* Callout boxes */
.callout { border-radius:10px; padding:24px 28px; margin:2rem 0; }
.callout--blue { background:var(--blue-pale); border-left:4px solid var(--blue); }
.callout--gold { background:var(--gold-pale); border-left:4px solid var(--gold); }
.callout--green { background:#E8F8EE; border-left:4px solid #2D6A4F; }
.callout--red { background:#FFF0F0; border-left:4px solid #C0392B; }
.callout-title { font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; font-weight:700; margin-bottom:8px; }
.callout--blue .callout-title { color:var(--blue); }
.callout--gold .callout-title { color:#97781E; }
.callout--green .callout-title { color:#2D6A4F; }
.callout--red .callout-title { color:#C0392B; }
.callout p { margin:0; color:var(--text); line-height:1.7; }

/* Data tables */
.wp-table-wrap { overflow-x:auto; margin:1.5rem 0; }
.wp-table { width:100%; border-collapse:collapse; font-size:.88rem; }
.wp-table th { background:var(--navy); color:#fff; padding:10px 14px; text-align:left; font-family:var(--font-mono); font-size:.75rem; letter-spacing:.06em; font-weight:600; }
.wp-table td { padding:9px 14px; border-bottom:1px solid var(--border); color:var(--text-muted); vertical-align:top; }
.wp-table tr:nth-child(even) td { background:var(--bg-alt); }
.wp-table tr:hover td { background:var(--blue-pale); }

/* Diagrams */
.diagram { background:var(--bg-alt); border:1px solid var(--border); border-radius:10px; padding:28px; margin:2rem 0; }
.diagram svg { width:100%; height:auto; display:block; }
.diagram figcaption { text-align:center; font-family:var(--font-mono); font-size:.72rem; color:var(--text-faint); margin-top:14px; letter-spacing:.04em; }

/* Proof / result blocks */
.proof-block { background:var(--navy); color:#C8D8E8; font-family:var(--font-mono); font-size:.82rem; padding:20px 24px; border-radius:8px; margin:1.5rem 0; line-height:1.8; }
.proof-block .result-true { color:#6EE7A4; font-weight:700; }
.proof-block .result-false { color:#FCA5A5; font-weight:700; }
.proof-block .comment { color:#64748B; }

/* Bottom download */
.wp-bottom-dl { display:flex; align-items:center; gap:14px; padding:32px; background:var(--bg-alt); border-radius:10px; margin-top:4rem; }
.wp-bottom-dl p { margin:0; color:var(--text-muted); font-size:.95rem; }

/* Responsive */
@media(max-width:960px){
  .wp-container { grid-template-columns:1fr; gap:0; }
  .wp-toc { position:static; display:none; }
}
@media(max-width:600px){
  .wp-hero-title { font-size:1.8rem; }
  .diagram { padding:16px; }
}