/* Tensor Almanac — Obsidian & Ember. Local fonts, no external requests. */
:root {
  color-scheme: dark;
  --obsidian: #101214;
  --ember: #ff7a2f;
  --slate: #1b1e20;
  --ivory: #f2eee8;
  --ash: #a7a9aa;
  --line: #34383a;
  --mono: ui-monospace, 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--obsidian); color: var(--ivory); font: 16px/1.65 Arial, Helvetica, sans-serif; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
a:hover { color: var(--ember); }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible, pre:focus-visible, .table-scroll:focus-visible { outline: 3px solid var(--ember); outline-offset: 5px; }
p { margin: 0 0 1.25rem; }
h1, h2, h3 { font-family: var(--mono); line-height: 1.15; letter-spacing: -.055em; margin: 0 0 1.2rem; }
h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
h3 { font-size: 1.45rem; }
h1, h2, h3, p, a { overflow-wrap: anywhere; }
em { color: var(--ember); font-style: normal; }
.site-header, main, footer { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.site-header { min-height: 72px; display: flex; justify-content: space-between; align-items: center; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; font: 700 17px/1 var(--mono); letter-spacing: -.045em; white-space: nowrap; }
.mark { display: inline-flex; justify-content: center; align-items: center; background: var(--ember); color: var(--obsidian); width: 30px; height: 30px; border-radius: 8px; font-size: 12px; letter-spacing: -.12em; }
.mark span { margin-inline: 1px; }
nav { display: flex; align-items: center; gap: 26px; font-size: 13px; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; }
nav a[aria-current] { color: var(--ember); }
.search-link { border-left: 1px solid var(--line); padding-left: 23px; }
.candidate-banner { padding: 9px 20px; color: var(--ash); border-bottom: 1px solid var(--line); text-align: center; font: 10px/1.6 var(--mono); letter-spacing: .015em; }
.hero { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, .9fr); gap: 76px; align-items: center; padding: 84px 0 88px; }
.hero-intro, .hero > *, .topics > *, .section-title > *, .edition-grid > * { min-width: 0; }
.eyebrow { margin-bottom: 18px; color: var(--ember); font: 700 10px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.hero h1 { font-size: clamp(2.6rem, 5.1vw, 4.4rem); line-height: 1.05; letter-spacing: -.065em; margin-bottom: 26px; }
.hero-copy { max-width: 610px; color: #c8c8c5; font-size: 17px; line-height: 1.6; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 29px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 46px; padding: 11px 20px; border: 1px solid var(--ember); border-radius: 7px; background: var(--ember); color: var(--obsidian); font: 700 12px/1.5 var(--mono); cursor: pointer; touch-action: manipulation; }
.button:hover { background: var(--ivory); border-color: var(--ivory); color: var(--obsidian); }
.button-outline { background: transparent; color: var(--ember); }
.button-outline:hover { background: var(--slate); border-color: var(--ember); color: var(--ivory); }
.protocol { padding: 28px 25px 25px; border: 1px solid var(--line); border-radius: 19px; background: linear-gradient(135deg, #ff7a2f0d, transparent 80%), var(--slate); }
.protocol h2 { color: var(--ember); font: 700 10px/1.6 var(--mono); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 26px; }
.protocol ol { margin: 0 0 27px; padding-left: 26px; list-style: decimal-leading-zero; font: 12px/1.9 var(--mono); color: #d3cfc9; }
.protocol li::marker { color: var(--ember); font-weight: 700; }
.protocol > a { display: flex; justify-content: space-between; gap: 10px; color: var(--ember); font: 700 10px/1.7 var(--mono); text-transform: uppercase; letter-spacing: .05em; }
.section { padding: 54px 0 60px; }
.library { padding-top: 14px; }
.section-title { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; margin-bottom: 22px; }
.section-title h2 { margin-bottom: 0; }
.section-title .eyebrow { margin-bottom: 6px; }
.section-note { color: var(--ash); font-size: 13px; max-width: 385px; margin: 0 0 3px; }
.subject-nav { display: flex; flex-wrap: wrap; justify-content: flex-start; gap: 9px; margin: 0 0 23px; }
.subject-nav a { border: 1px solid var(--line); border-radius: 100px; min-height: 36px; padding: 7px 13px; font-size: 12px; background: var(--slate); }
.library .subject-nav a:first-child, .subject-nav a:hover, .subject-nav a[aria-current] { color: var(--ember); border-color: var(--ember); }
.edition-grid, .article-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; }
.article-card, .reading-note { position: relative; display: flex; flex-direction: column; padding: 27px; border: 1px solid var(--line); border-radius: 13px; background: var(--slate); }
.article-card:has(.card-title):hover { border-color: var(--ember); }
.article-card:focus-within { outline: 3px solid var(--ember); outline-offset: 4px; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 17px; }
.card-meta .eyebrow { margin: 0; }
.card-meta > span { flex-shrink: 0; color: var(--ash); font: 10px/1.5 var(--mono); }
.article-card h2, .article-card h3, .reading-note h3 { font-size: clamp(1.15rem, 1.85vw, 1.5rem); line-height: 1.2; margin-bottom: 13px; }
.card-title::after { content: ''; position: absolute; inset: 0; border-radius: 13px; }
.card-title:focus-visible { outline: none; }
.article-card > p, .reading-note > p:not(.eyebrow) { color: #c8c8c5; font-size: 14px; line-height: 1.6; margin-bottom: 23px; }
.card-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; }
.card-cta, .text-link { color: var(--ember); font-size: 12px; }
.review-tag { color: var(--ash); font: 10px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .025em; }
.reading-note { background: transparent; border-style: dashed; }
.reading-note h3 { color: var(--ivory); }
.reading-note .text-link { position: relative; align-self: flex-start; margin-top: auto; }
.territories { padding-top: 24px; padding-bottom: 64px; }
.topics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.topic-card { display: block; padding: 18px; background: var(--slate); border: 1px solid var(--line); border-radius: 10px; }
.topic-card:hover { border-color: var(--ember); color: var(--ivory); }
.topic-card h2, .topic-card h3 { display: flex; justify-content: space-between; gap: 8px; font: 700 15px/1.3 var(--mono); letter-spacing: -.045em; margin-bottom: 8px; }
.topic-card h2 span, .topic-card h3 span { color: var(--ember); }
.topic-card p:last-child { font-size: 12px; color: var(--ash); margin: 0; }
.topic-card .eyebrow { margin-bottom: 11px; font-size: 9px; }
.empty { grid-column: 1 / -1; max-width: 720px; border-left: 2px solid var(--ember); padding: 16px 0 18px 26px; }
.empty h2, .empty h3 { font-size: 25px; }
.empty p { color: var(--ash); font-size: 16px; }
footer { border-top: 1px solid var(--line); padding-block: 30px; display: flex; justify-content: space-between; gap: 25px; color: var(--ash); font-size: 11px; }
.footer-brand { color: var(--ivory); font: 700 13px/1.5 var(--mono); }
.footer-brand span { display: block; color: var(--ash); font: 11px/1.8 Arial, Helvetica, sans-serif; }
footer > p { max-width: 190px; margin-bottom: 0; }
footer > div:last-child { display: flex; gap: 18px; flex-wrap: wrap; }
footer a { display: inline-block; padding-block: 4px; }
.intro { font-size: 21px; line-height: 1.5; max-width: 760px; color: #d3cfc9; }
.prose { max-width: 780px; margin: 45px auto 85px; font-size: 18px; line-height: 1.8; }
.prose h1 { font-size: clamp(2rem, 3.8vw, 2.8rem); line-height: 1.12; letter-spacing: -.06em; margin-bottom: 23px; }
.prose h2 { font-size: 1.6rem; line-height: 1.25; }
.prose p { color: #c8c8c5; }
.prose a { color: var(--ember); text-decoration: underline; text-underline-offset: 3px; }
.prose section { margin-top: 40px; scroll-margin-top: 26px; }
.prose .intro { font-size: 21px; }
.prose .eyebrow { color: var(--ember); }
.breadcrumbs { display: flex; flex-wrap: wrap; justify-content: flex-start; gap: 12px; width: auto; font-size: 12px; margin-bottom: 22px; }
.breadcrumbs a { padding-block: 5px; }
.breadcrumbs span { color: var(--ash); }
.review-note { margin-bottom: 27px; padding: 12px 17px; border: 1px solid var(--line); border-left: 2px solid var(--ember); border-radius: 0 8px 8px 0; background: var(--slate); color: var(--ash); font: 11px/1.7 var(--mono); }
.prose .byline { font-size: 12px; color: var(--ash); }
time { white-space: nowrap; }
.toc { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 5px 24px; padding: 23px; margin-top: 28px; border: 1px solid var(--line); border-radius: 10px; background: var(--slate); }
.toc h2 { grid-column: 1 / -1; font: 700 11px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 9px; }
.toc a { display: block; padding-block: 4px; font-size: 13px; line-height: 1.6; }
.verification { padding: 13px 18px; margin: 20px 0 30px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; }
.verification summary { cursor: pointer; color: var(--ash); font: 12px/1.6 var(--mono); }
.verification p { margin: 12px 0 0; }
pre { max-width: 100%; overflow: auto; padding: 23px; background: var(--slate); border: 1px solid var(--line); border-radius: 10px; font: 13px/1.75 var(--mono); tab-size: 4; }
code, samp { font-family: inherit; }
.table-scroll { overflow: auto; border-radius: 8px; }
table { border-collapse: collapse; min-width: 520px; width: 100%; font-size: 14px; }
td, th { padding: 13px; border: 1px solid var(--line); text-align: left; }
th { background: var(--slate); color: var(--ivory); font-family: var(--mono); font-size: 12px; }
caption { text-align: left; color: var(--ash); font-size: 13px; padding-bottom: 12px; }
.section-sources { font-size: 12px; }
.related { border-top: 1px solid var(--line); margin-top: 45px; padding-top: 29px; }
.related a { display: block; padding: 9px 0; font-size: 15px; }
.search { min-height: 62vh; }
.search h1 { max-width: 850px; }
.search-input { display: flex; gap: 12px; margin: 12px 0 25px; max-width: 800px; }
input { min-width: 0; flex: 1; background: var(--slate); border: 1px solid var(--line); border-radius: 7px; color: var(--ivory); padding: 15px; font: inherit; }
#search-status { color: var(--ash); }
#search-results { display: grid; gap: 17px; max-width: 800px; }
#search-results h2 { font-size: 24px; }
#search-results .article-card { padding-bottom: 10px; }
.skip { position: absolute; top: -100px; left: 20px; z-index: 5; padding: 12px; background: var(--ember); color: var(--obsidian); }
.skip:focus { top: 10px; }
main:focus { outline: none; }
@media (max-width: 1050px) {
  .hero { gap: 38px; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); padding-block: 65px 70px; }
  .hero h1 { font-size: clamp(2.4rem, 5.1vw, 4.4rem); }
  .hero-copy { font-size: 16px; }
  .protocol { padding: 23px 20px; }
  .protocol ol { font-size: 11px; }
  .topics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .site-header, main, footer { width: calc(100% - 40px); }
  .site-header { flex-wrap: wrap; padding-block: 17px 9px; gap: 7px; }
  .brand { font-size: 16px; }
  .site-header nav { width: 100%; justify-content: space-between; gap: 12px; }
  .site-header nav a { min-height: 42px; }
  .search-link { padding-left: 17px; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 45px 50px; }
  .hero h1 { font-size: clamp(2.25rem, 7.9vw, 3.8rem); }
  .hero .eyebrow { font-size: 9px; letter-spacing: .07em; }
  .hero-copy { font-size: 16px; max-width: 540px; }
  .protocol { max-width: 540px; padding: 25px; }
  .protocol ol { font-size: 12px; }
  .section { padding-block: 35px 40px; }
  .library { padding-top: 0; }
  .section-title { display: block; }
  .section-note { margin-top: 16px; max-width: 540px; }
  .edition-grid, .article-grid { grid-template-columns: minmax(0, 1fr); }
  .article-card h2, .article-card h3, .reading-note h3 { font-size: 23px; }
  .article-card, .reading-note { padding: 24px; }
  .subject-nav { gap: 8px; }
  .subject-nav a { min-height: 40px; padding: 8px 12px; }
  .territories { padding-top: 13px; }
  footer { flex-direction: column; gap: 14px; }
  footer > p { max-width: none; }
  .candidate-banner { font-size: 9px; }
  .prose { margin-block: 30px 60px; font-size: 17px; }
  .prose h1 { font-size: clamp(1.9rem, 6vw, 2.8rem); }
  .prose h2 { font-size: 1.4rem; }
  .prose .intro { font-size: 19px; }
  .toc { grid-template-columns: minmax(0, 1fr); padding: 20px; }
  .toc h2 { font-size: 11px; }
  .breadcrumbs { gap: 9px; font-size: 11px; }
  .review-note { font-size: 10px; }
  .search-input { flex-direction: column; }
  .search-input .button { min-height: 48px; }
}
@media (max-width: 430px) {
  .topics { grid-template-columns: minmax(0, 1fr); }
  .hero h1 { font-size: clamp(2rem, 10vw, 2.25rem); letter-spacing: -.07em; }
  .button { padding-inline: 16px; }
  .card-meta { gap: 10px; }
  .card-meta .eyebrow { font-size: 9px; }
  .card-meta > span { font-size: 9px; }
  .article-card, .reading-note { padding: 21px; }
  .article-card h2, .article-card h3 { font-size: 21px; }
  .prose pre { padding: 17px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}