/* SPEC page — documentary meta page */
.spec-page{max-width:720px}
.spec-page h1{font-size:clamp(2rem,4vw,3rem);line-height:1.1;margin:.2rem 0 1rem}
.spec-page h2{margin:2.2rem 0 .7rem;font-size:1.35rem}
.spec-page h3{margin:1.4rem 0 .45rem;font-size:1.05rem}
.spec-page p,.spec-page li{font-size:1.02rem;line-height:1.55}
.spec-page .forum-intro{font-size:1.12rem;line-height:1.5;max-width:40rem}
.spec-toc{display:flex;flex-wrap:wrap;gap:.5rem .9rem;margin:1.2rem 0 1.8rem;padding:0;list-style:none}
.spec-toc a{font-size:13px;letter-spacing:.02em}
.spec-grade-grid{display:grid;gap:1rem;margin:1rem 0 1.5rem}
@media(min-width:720px){.spec-grade-grid{grid-template-columns:1fr 1fr}}
.spec-grade-card{border:1px solid rgba(24,44,43,.18);border-radius:10px;padding:1rem 1.1rem;background:rgba(24,44,43,.03)}
.spec-grade-card .letter{display:inline-flex;align-items:center;justify-content:center;min-width:2rem;height:2rem;padding:0 .4rem;border-radius:999px;background:#182c2b;color:#f4f1ea;font:700 14px/1 Arial,Helvetica,sans-serif;margin-bottom:.55rem}
.spec-grade-card[data-g="A"] .letter,.spec-grade-card[data-g="A-"] .letter{background:#1f6b4a}
.spec-grade-card[data-g="B"] .letter,.spec-grade-card[data-g="B+"] .letter,.spec-grade-card[data-g="B-"] .letter{background:#2f5d8c}
.spec-grade-card[data-g="C"] .letter,.spec-grade-card[data-g="C+"] .letter,.spec-grade-card[data-g="C-"] .letter{background:#8a6d1f}
.spec-grade-card[data-g="D"] .letter{background:#8a3f1f}
.spec-grade-card[data-g="F"] .letter{background:#7a1f1f}
.spec-demerit{border-left:3px solid #8a3f1f;padding:.15rem 0 .15rem .9rem;margin:.9rem 0}
.spec-note{font-size:.95rem;color:rgba(24,44,43,.78)}

/* Package tree + denser lists */
.spec-tree{display:block;margin:1rem 0 1.2rem;padding:1rem 1.1rem;border:1px solid rgba(24,44,43,.16);border-radius:10px;background:rgba(24,44,43,.04);font:12.5px/1.45 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre;overflow-x:auto}
.spec-page ul{margin:.4rem 0 1rem;padding-left:1.25rem}
.spec-page .spec-demerit ul{margin:.35rem 0}
.spec-page .spec-demerit li{margin:.35rem 0}

.spec-version-line{margin:.2rem 0 1rem;font-size:.98rem;color:rgba(24,44,43,.82)}
.spec-version-badge{display:inline-block;padding:.2rem .55rem;border-radius:999px;background:#182c2b;color:#f4f1ea;font:700 12px/1.2 Arial,Helvetica,sans-serif;letter-spacing:.03em;vertical-align:middle}
.spec-page ol{margin:.4rem 0 1rem;padding-left:1.25rem}
.spec-page ol li{margin:.35rem 0}

/* Spec v3 provenance — muted, never hero */
.aif-provenance{margin:0.65rem 0 0;padding:0;font:10px/1.55 var(--mono, ui-monospace, Menlo, Consolas, monospace);letter-spacing:.04em;color:#6e7f72;opacity:.85}
.site-footer .aif-provenance,.footer .aif-provenance,.forum-footer .aif-provenance{color:#6e7f72}
.aif-provenance a{color:inherit;text-decoration:underline;text-underline-offset:2px}