/* ============================================================
   Campus Visitor Access — research report
   Written from scratch. No frameworks, no JavaScript.
   ============================================================ */

:root {
  --paper:   #f6f7f5;
  --card:    #ffffff;
  --ink:     #14181b;
  --body:    #2a3136;
  --muted:   #5a646b;
  --rule:    #d5dad9;
  --rule-lt: #e6eae8;
  --tint:    #eff2f1;
  --signal:  #c0231e;
  --sig-soft:#fbf1f0;

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
          "DejaVu Sans Mono", "Liberation Mono", monospace;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino,
           "Times New Roman", serif;

  --measure: 44rem;
  --gutter: 1.5rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { font-size: 112.5%; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--serif);
  font-size: 1.075rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

.wrap { width: 100%; max-width: var(--measure); margin: 0 auto; padding: 0 var(--gutter); }

a { color: var(--signal); text-underline-offset: 2px; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff;
  padding: .7rem 1rem; z-index: 50; font-family: var(--mono); font-size: .8rem;
}
.skip:focus { left: 0; }

/* ---------------- masthead ---------------- */

.masthead { background: var(--ink); color: #f2f4f3; padding: 4.5rem 0 3rem; }

.eyebrow {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .16em;
  text-transform: uppercase; color: #9aa4a8; margin: 0 0 1.6rem;
}

.masthead h1 {
  font-family: var(--serif); font-size: clamp(2.4rem, 6.5vw, 4rem);
  line-height: 1.02; letter-spacing: -.02em; font-weight: 400;
  margin: 0 0 1.1rem; color: #fff;
}

.standfirst {
  font-size: 1.22rem; line-height: 1.55; color: #c8d0d2; max-width: 34rem; margin: 0 0 2.6rem;
}

.meta { display: flex; flex-wrap: wrap; gap: 1.4rem 2.6rem; margin: 0;
        border-top: 1px solid #333c40; padding-top: 1.5rem; }
.meta div { margin: 0; }
.meta dt {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .14em;
  text-transform: uppercase; color: #8b969a; margin-bottom: .3rem;
}
.meta dd { margin: 0; font-size: .95rem; color: #e4e9e8; }
.meta a { color: #f0a9a5; }

/* ---------------- nav ---------------- */

.toc {
  position: sticky; top: 0; z-index: 20;
  background: var(--paper); border-bottom: 1px solid var(--rule);
}
.toc .wrap { max-width: 64rem; }
.toc ul {
  list-style: none; display: flex; gap: 1.4rem; margin: 0; padding: .8rem 0;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
}
.toc li { flex: 0 0 auto; }
.toc a {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--muted); text-decoration: none;
  white-space: nowrap;
}
.toc a:hover { color: var(--signal); }

/* ---------------- section frame ---------------- */

main > section { padding: 4.5rem 0; border-bottom: 1px solid var(--rule); }
main > section.alt { background: var(--card); }

.section-label {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--signal); margin: 0 0 .9rem;
}

main h2 {
  font-family: var(--serif); font-weight: 400; font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.15; letter-spacing: -.015em; color: var(--ink); margin: 0 0 1.5rem;
}

main h3 {
  font-family: var(--mono); font-size: .9rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink);
  margin: 2.6rem 0 .9rem; padding-bottom: .45rem;
  border-bottom: 2px solid var(--ink); display: inline-block;
}

main p { margin: 0 0 1.1rem; }
main p:last-child { margin-bottom: 0; }

.lede { font-size: 1.3rem; line-height: 1.55; color: var(--ink); }

/* ---------------- hero register ---------------- */

.register-block { background: var(--card); }
.register-block .lede { margin-bottom: 2.4rem; }

.register { list-style: none; margin: 0 0 1.4rem; padding: 0; border-top: 2px solid var(--ink); }
.register li {
  display: grid; grid-template-columns: 4.4rem 1fr 3rem;
  gap: .9rem; align-items: baseline;
  padding: .85rem 0; border-bottom: 1px solid var(--rule-lt);
}
.register .clock {
  font-family: var(--mono); font-size: .76rem; letter-spacing: .04em; color: var(--muted);
}
.register .entry { font-size: 1.05rem; line-height: 1.5; }
.register .score {
  font-family: var(--mono); font-size: .95rem; text-align: right; color: var(--muted);
}
.register .score.pos { color: var(--muted); }

.register li.trough {
  background: var(--sig-soft);
  margin: 0 -1rem; padding-left: 1rem; padding-right: 1rem;
  border-bottom-color: var(--signal);
}
.register li.trough .entry { color: var(--ink); font-weight: 700; }
.register li.trough .score { color: var(--signal); font-weight: 700; font-size: 1.15rem; }
.register li.trough .clock { color: var(--signal); }

.register-note { font-size: .93rem; color: var(--muted); font-style: italic; }

/* ---------------- findings grid ---------------- */

.finding-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.6rem; margin: 2rem 0;
}
.finding { background: var(--tint); border-left: 3px solid var(--ink); padding: 1.2rem 1.3rem; }
.finding h3 {
  margin: 0 0 .6rem; border: 0; padding: 0; display: block;
  font-size: .78rem; letter-spacing: .07em;
}
.finding p { font-size: .98rem; line-height: 1.55; margin: 0; }

/* ---------------- quotes ---------------- */

blockquote { margin: 0; }

.pull {
  border-left: 4px solid var(--signal); padding: .3rem 0 .3rem 1.4rem;
  margin: 2.2rem 0; font-size: 1.15rem; line-height: 1.5; color: var(--ink);
}

.statement {
  background: var(--sig-soft); border: 1px solid var(--signal);
  padding: 1.5rem 1.6rem; margin: 1.6rem 0; font-size: 1.06rem; line-height: 1.6;
}

.quote {
  background: var(--tint); border-left: 3px solid var(--rule);
  padding: 1rem 1.2rem; margin: 1.3rem 0; font-style: italic; color: var(--ink);
}
.quote p { margin: 0 0 .5rem; }
.quote footer {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted); font-style: normal;
}

.quote-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; }
.quote-pair .quote { margin: 1.3rem 0 0; }

.quote-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: .8rem; margin: 1.4rem 0; }
.quote-row .quote { margin: 0; padding: .9rem 1.1rem; font-size: 1rem; }

/* ---------------- callouts ---------------- */

.callout {
  background: var(--ink); color: #e8ecea; padding: 1.6rem 1.7rem; margin: 2rem 0;
}
.callout h3 {
  color: #fff; border-bottom-color: var(--signal); margin-top: 0; margin-bottom: .9rem;
}
.callout p { color: #cdd5d4; }
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: #fff; }
.callout em { color: #f3b4b0; font-style: italic; }
.callout.tight { padding: 1.3rem 1.5rem; }

.warn {
  background: var(--sig-soft); border-left: 4px solid var(--signal);
  padding: 1rem 1.2rem; font-size: 1rem; color: var(--ink);
}

.note-inline {
  background: var(--tint); border-left: 3px solid var(--muted);
  padding: 1.1rem 1.3rem; font-size: 1rem; line-height: 1.6;
}

/* ---------------- tables ---------------- */

.data {
  width: 100%; border-collapse: collapse; margin: 1.4rem 0 1.8rem;
  font-family: var(--mono); font-size: .875rem; line-height: 1.5;
}
.data caption {
  text-align: left; font-family: var(--mono); font-size: .78rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); padding-bottom: .6rem;
}
.data th, .data td {
  border: 1px solid var(--rule); padding: .55rem .7rem; text-align: left; vertical-align: top;
}
.data thead th {
  background: var(--ink); color: #fff; font-weight: 700;
  font-size: .76rem; letter-spacing: .08em; text-transform: uppercase;
}
.data tbody th { background: var(--tint); color: var(--ink); font-weight: 700; white-space: nowrap; }
.data tbody tr:nth-child(even) td { background: #fbfcfb; }
.data .num { text-align: center; white-space: nowrap; }
.data .good { color: var(--ink); font-weight: 700; }
.data .bad  { color: var(--signal); font-weight: 700; }
.data tr.fail td, .data tr.fail th { background: var(--sig-soft); }
.data tr.weak td, .data tr.weak th { background: #fdf8f7; }
.data tfoot th, .data tfoot td {
  border-top: 2px solid var(--ink); font-weight: 700; background: var(--tint);
}
.data .total { font-size: 1.05rem; }
.data .win { color: var(--signal); font-weight: 700; }
.data.anchors { font-size: .82rem; }

.table-scroll { overflow-x: auto; }

/* ---------------- figures ---------------- */

figure { margin: 2rem 0; }
figcaption {
  font-family: var(--mono); font-size: .84rem; line-height: 1.65; color: var(--muted);
  margin-top: .8rem; padding-left: .9rem; border-left: 2px solid var(--rule);
}
figcaption strong { color: var(--ink); }

.map img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--rule); background: #fff;
}

.shots {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr)); gap: .8rem;
}
.shots img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--rule); background: #fff;
}
.shots figcaption { grid-column: 1 / -1; }

.evidence img {
  width: 100%; height: auto; display: block; max-width: 34rem;
  border: 1px solid var(--rule);
}

/* ---------------- persona cards ---------------- */

.two-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1.4rem; margin: 1.8rem 0; }

.card { padding: 1.4rem 1.5rem; border: 1px solid var(--rule); background: var(--paper); }
.card.real { border-color: var(--ink); border-left: 4px solid var(--signal); background: #fff; }
.card h3 {
  border: 0; padding: 0; margin: 0 0 .8rem; display: block;
  font-family: var(--serif); font-size: 1.25rem; letter-spacing: -.01em;
  text-transform: none; font-weight: 400;
}
.card-tag {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 .5rem;
}
.card.real .card-tag { color: var(--signal); }
.vitals { font-size: .94rem; color: var(--muted); margin-bottom: 1rem; }
.why { font-size: .96rem; color: var(--muted); border-top: 1px solid var(--rule); padding-top: .9rem; margin-top: 1rem; }

.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li {
  position: relative; padding-left: 1.2rem; margin-bottom: .6rem;
  font-size: 1rem; line-height: 1.5;
}
.ticks li::before {
  content: "—"; position: absolute; left: 0; color: var(--rule);
  font-family: var(--mono); font-size: .8rem;
}

/* ---------------- user stories ---------------- */

.stories { list-style: none; counter-reset: s; margin: 1.8rem 0 0; padding: 0; }
.stories li { border-top: 1px solid var(--rule); padding: 1.4rem 0; }
.story-id {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--signal); margin: 0 0 .6rem;
}
.story { font-size: 1.14rem; line-height: 1.55; color: var(--ink); margin: 0 0 .7rem; }
.story-why { font-size: .99rem; color: var(--muted); margin: 0; }

/* ---------------- IA tree ---------------- */

.tree {
  background: var(--ink); padding: 1.4rem 1.5rem; margin: 1.8rem 0; overflow-x: auto;
}
.tree pre {
  margin: 0; font-family: var(--mono); font-size: .82rem; line-height: 1.8;
  color: #cdd5d4; white-space: pre;
}
.tree b { color: #fff; font-weight: 700; }
.tree i { color: #8e999d; font-style: normal; font-size: .92em; }

.calls { margin: 1.4rem 0 0; }
.calls dt {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .06em;
  color: var(--ink); font-weight: 700; margin-top: 1.1rem;
}
.calls dd { margin: .4rem 0 0; font-size: 1rem; color: var(--body); }

/* ---------------- moscow ---------------- */

.moscow { display: grid; gap: 1.4rem; margin: 1.8rem 0 0; }

.tier { border: 1px solid var(--rule); background: var(--card); padding: 1.4rem 1.5rem; }
.tier h3 {
  display: flex; justify-content: space-between; align-items: baseline;
  border: 0; padding: 0 0 .6rem; margin: 0 0 1rem;
  border-bottom: 2px solid var(--ink); width: 100%;
}
.tier h3 span {
  font-family: var(--mono); font-size: 1.5rem; color: var(--rule); letter-spacing: 0;
}
.tier ol, .tier ul { margin: 0; padding-left: 1.2rem; }
.tier li { margin-bottom: .85rem; font-size: 1.01rem; line-height: 1.55; }
.tier li:last-child { margin-bottom: 0; }

.tier.must { border-left: 4px solid var(--signal); }
.tier.must h3 { border-bottom-color: var(--signal); }
.tier.must h3 span { color: var(--signal); }
.tier.must li { margin-bottom: 1rem; }

.tier.wont { background: var(--tint); }
.tier.wont dt {
  font-family: var(--mono); font-size: .76rem; letter-spacing: .05em;
  color: var(--signal); font-weight: 700; margin-top: 1.1rem;
}
.tier.wont dt:first-of-type { margin-top: 0; }
.tier.wont dd { margin: .4rem 0 0; font-size: .98rem; line-height: 1.55; }
.tier.wont dl { margin: 0; }

.aside { display: block; font-size: .85rem; color: var(--muted); font-style: italic; }

/* ---------------- versus ---------------- */

.versus {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 1rem;
  align-items: center; margin: 1.8rem 0;
}
.side { border: 1px solid var(--ink); padding: 1.1rem 1.2rem; background: var(--card); }
.side h3 {
  border: 0; padding: 0; margin: .4rem 0 .4rem; display: block;
  font-family: var(--serif); font-size: 1.1rem; text-transform: none;
  letter-spacing: -.01em; font-weight: 400; line-height: 1.25;
}
.side p { font-family: var(--mono); font-size: .7rem; color: var(--muted); margin: 0; }
.tag {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--signal);
}
.vs { font-family: var(--mono); font-size: .8rem; color: var(--muted); text-align: center; }

/* ---------------- disclosure ---------------- */

.disclosure { border: 1px solid var(--rule); background: var(--tint); margin: 1.6rem 0 0; }
.disclosure summary {
  cursor: pointer; padding: .9rem 1.1rem;
  font-family: var(--mono); font-size: .76rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--ink);
}
.disclosure[open] summary { border-bottom: 1px solid var(--rule); }
.disclosure ul { margin: 0; padding: 1rem 1.1rem 1.1rem 2.2rem; }
.disclosure li { font-size: .99rem; line-height: 1.55; margin-bottom: .6rem; }
.disclosure li:last-child { margin-bottom: 0; }

/* ---------------- outcome ---------------- */

.outcome { list-style: none; margin: 1.8rem 0; padding: 0; border-top: 2px solid var(--ink); }
.outcome li {
  padding: 1rem 0 1rem 2rem; border-bottom: 1px solid var(--rule-lt);
  position: relative; font-size: 1.08rem;
}
.outcome li::before {
  content: "✓"; position: absolute; left: 0; color: var(--signal); font-family: var(--mono);
}

.bullets { margin: 1rem 0 0; padding-left: 1.2rem; }
.bullets li { margin-bottom: .85rem; font-size: 1.03rem; line-height: 1.55; }

/* ---------------- colophon ---------------- */

.colophon { background: var(--ink); color: #b9c2c2; padding: 3rem 0 3.5rem; }
.colophon p { margin: 0 0 .9rem; font-size: 1rem; }
.colophon strong { color: #fff; }
.fine { font-size: .88rem; color: #8b969a; line-height: 1.7; }

/* ---------------- responsive ---------------- */

@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .masthead { padding: 3rem 0 2.2rem; }
  main > section { padding: 3rem 0; }
  .register li { grid-template-columns: 3.6rem 1fr 2.4rem; gap: .6rem; }
  .register .entry { font-size: .93rem; }
  .register li.trough { margin: 0 -.6rem; padding-left: .6rem; padding-right: .6rem; }
  .versus { grid-template-columns: 1fr; }
  .vs { padding: .3rem 0; }
  .data { font-size: .74rem; }
  .data th, .data td { padding: .45rem .5rem; }
  .tree pre { font-size: .66rem; }
  .meta { gap: 1rem 1.6rem; }
}

/* ---------------- print ---------------- */

@media print {
  body { background: #fff; font-size: 10pt; }
  .toc, .skip { display: none; }
  .masthead, .callout, .tree, .colophon {
    background: #fff !important; color: #000 !important; border: 1px solid #999;
  }
  .masthead h1, .callout h3, .tree b, .colophon strong { color: #000 !important; }
  .standfirst, .callout p, .tree pre, .meta dd, .colophon p { color: #333 !important; }
  main > section { padding: 1.2rem 0; page-break-inside: avoid; }
  figure, table, .tier { page-break-inside: avoid; }
  a { color: #000; }
}

/* ============================================================
   First-click dot plot  (tree test)
   ============================================================ */

.fc { margin: 1.8rem 0 2rem; border-top: 2px solid var(--ink); }

.fc-row {
  display: grid;
  grid-template-columns: 2.6rem 1fr 7.5rem 3.2rem;
  gap: .9rem; align-items: center;
  padding: .75rem 0; border-bottom: 1px solid var(--rule-lt);
}
.fc-task {
  font-family: var(--mono); font-size: .84rem; font-weight: 700; color: var(--ink);
}
.fc-what { font-size: 1rem; line-height: 1.4; }
.fc-dots { display: flex; gap: .3rem; }
.fc-dots i {
  width: 1.05rem; height: 1.05rem; border-radius: 50%;
  border: 1.5px solid var(--rule); background: transparent; display: block;
}
.fc-dots i.on { background: var(--ink); border-color: var(--ink); }
.fc-num {
  font-family: var(--mono); font-size: .95rem; text-align: right; color: var(--muted);
}

.fc-row.pass .fc-dots i.on { background: var(--ink); border-color: var(--ink); }
.fc-row.pass .fc-num { color: var(--ink); font-weight: 700; }

.fc-row.broke { background: var(--sig-soft); margin: 0 -.9rem; padding-left: .9rem; padding-right: .9rem; }
.fc-row.broke .fc-dots i.on { background: var(--signal); border-color: var(--signal); }
.fc-row.broke .fc-dots i { border-color: #e9b6b3; }
.fc-row.broke .fc-num { color: var(--signal); font-weight: 700; }
.fc-row.broke .fc-task { color: var(--signal); }

.fc-key {
  font-family: var(--mono); font-size: .78rem; color: var(--muted);
  margin: .8rem 0 0; line-height: 1.6;
}

/* ============================================================
   Request lifecycle  (state comparison)
   ============================================================ */

.lifecycle {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.6rem; margin: 2rem 0;
}

.lc { border: 1px solid var(--rule); background: var(--card); padding: 1.4rem 1.4rem 1.6rem; }
.lc-now { border-left: 4px solid var(--signal); }
.lc-next { border-left: 4px solid var(--ink); }

.lc h3 {
  border: 0; padding: 0; margin: 0 0 .35rem; display: block;
  font-family: var(--mono); font-size: .8rem; letter-spacing: .12em;
  text-transform: uppercase;
}
.lc-now h3 { color: var(--signal); }
.lc-sub {
  font-size: .95rem; color: var(--muted); font-style: italic;
  margin: 0 0 1.3rem; line-height: 1.5;
}

.lc ol { list-style: none; margin: 0; padding: 0; counter-reset: st; }
.lc li {
  position: relative; padding: .7rem .9rem; margin-bottom: 1.5rem;
  border: 1px solid var(--rule); background: var(--paper);
  font-size: .97rem; line-height: 1.45;
}
.lc li:last-child { margin-bottom: 0; }
.lc li::after {
  content: "↓"; position: absolute; left: 50%; bottom: -1.35rem;
  transform: translateX(-50%);
  font-family: var(--mono); font-size: .95rem; color: var(--rule); line-height: 1;
}
.lc li:last-child::after { content: none; }
.lc li span {
  display: block; font-size: .87rem; color: var(--muted); margin-top: .25rem; line-height: 1.45;
}

.lc li.dead {
  background: var(--sig-soft); border-color: var(--signal); color: var(--ink); font-weight: 700;
}
.lc li.dead span { color: var(--signal); font-weight: 400; }
.lc li.dead::after { color: var(--signal); }
.lc li.loop { margin-bottom: 2rem; }
.lc li.loop::after {
  content: "loops back to the start";
  font-size: .8rem; color: var(--signal); white-space: nowrap;
  bottom: -1.55rem; letter-spacing: .02em;
}
.lc li.good { background: var(--tint); border-color: var(--ink); }
.lc li.end { border-width: 2px; border-color: var(--ink); font-weight: 700; }

.lc-escape {
  margin-top: 1.9rem; padding-top: .9rem; border-top: 1px dashed var(--rule);
  font-size: .9rem; color: var(--muted); line-height: 1.5;
}
.lc-escape strong { color: var(--signal); }
.lc-next .lc-escape strong { color: var(--ink); }

@media (max-width: 40rem) {
  .fc-row { grid-template-columns: 2.2rem 1fr 2.8rem; row-gap: .5rem; }
  .fc-dots { grid-column: 1 / -1; }
}

/* ============================================================
   Session evidence
   ============================================================ */

.card-shot img { max-width: 100%; }

.sheets {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: .7rem; margin: 1.6rem 0 2rem;
}
.sheets a { display: block; line-height: 0; }
.sheets img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--rule); background: #fff;
}
.sheets a:hover img { border-color: var(--signal); }
.sheets a:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }
.sheets figcaption { grid-column: 1 / -1; margin-top: .6rem; }

/* let the filmstrip run wider than the prose measure */
@media (min-width: 62rem) {
  .sheets { margin-left: -6rem; margin-right: -6rem; }
}
@media (max-width: 34rem) {
  .sheets { grid-template-columns: repeat(3, 1fr); }
}