:root {
    --paper:      #e5e9e8;
    --paper-2:    #eff2f1;
    --paper-sunk: #dae0df;
    --ink:        #192126;
    --ink-2:      #56666d;
    --ink-3:      #7d8c92;
    --rule:       #b6c0c0;
    --rule-soft:  #cbd3d3;
    --cobalt:     #0b3c92;
    --glow:       #3f86e8;
    --glow-soft:  rgba(63,134,232,.13);
    --glow-soft2: rgba(11,60,146,.09);
    --rust:       #8b3a22;
    --rust-bg:    rgba(139,58,34,.06);

    --step--1: .82rem;
    --step-0:  1.09rem;
    --step-1:  1.3rem;
    --step-2:  1.6rem;
    --step-3:  2.1rem;
    --step-4:  3rem;

    --serif: "Spectral", Georgia, "Times New Roman", serif;
    --fell:  "IM Fell English", Georgia, serif;
    --fellsc:"IM Fell English SC", "IM Fell English", Georgia, serif;
    --mono:  "Courier Prime", "Courier New", Courier, monospace;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --paper:      #0e1417;
      --paper-2:    #161e22;
      --paper-sunk: #0a0f12;
      --ink:        #cfd8d8;
      --ink-2:      #8a9a9f;
      --ink-3:      #6b7a80;
      --rule:       #2c383d;
      --rule-soft:  #222c31;
      --cobalt:     #8bb8ff;
      --glow:       #56a0ff;
      --glow-soft:  rgba(86,160,255,.17);
      --glow-soft2: rgba(40,100,200,.13);
      --rust:       #d5876a;
      --rust-bg:    rgba(213,135,106,.07);
    }
  }
  :root[data-theme="dark"] {
    --paper:      #0e1417;
    --paper-2:    #161e22;
    --paper-sunk: #0a0f12;
    --ink:        #cfd8d8;
    --ink-2:      #8a9a9f;
    --ink-3:      #6b7a80;
    --rule:       #2c383d;
    --rule-soft:  #222c31;
    --cobalt:     #8bb8ff;
    --glow:       #56a0ff;
    --glow-soft:  rgba(86,160,255,.17);
    --glow-soft2: rgba(40,100,200,.13);
    --rust:       #d5876a;
    --rust-bg:    rgba(213,135,106,.07);
  }

  body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--serif);
    font-size: var(--step-0);
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
  }

  /* drifting lantern light, behind everything */
  .lantern {
    position: fixed;
    inset: -30%;
    z-index: 0;
    pointer-events: none;
    background:
      radial-gradient(circle 26vmax at 22% 18%, var(--glow-soft) 0%, transparent 62%),
      radial-gradient(circle 34vmax at 78% 74%, var(--glow-soft2) 0%, transparent 60%);
    animation: drift 46s ease-in-out infinite alternate;
  }
  @keyframes drift {
    from { transform: translate3d(-3%, 2%, 0) scale(1); }
    to   { transform: translate3d(5%, -4%, 0) scale(1.14); }
  }
  @media (prefers-reduced-motion: reduce) {
    .lantern { animation: none; }
    .pip { animation: none; }
  }

  .sheet {
    position: relative;
    z-index: 1;
    max-width: 44rem;
    margin: 0 auto;
    padding-inline: 20px;
    padding-block: 2.2rem 4rem;
  }

  /* ---------- masthead ---------- */
  .masthead { display: flex; flex-direction: column; gap: .35rem; }
  .register {
    font-family: var(--fellsc);
    font-size: var(--step-1);
    letter-spacing: .04em;
    line-height: 1.25;
    margin: 0;
    color: var(--ink);
  }
  .register-sub {
    font-family: var(--mono);
    font-size: var(--step--1);
    color: var(--ink-2);
    letter-spacing: .01em;
  }
  .masthead-rule {
    border: 0;
    border-top: 3px double var(--rule);
    margin-block: 1.1rem 1.4rem;
  }

  /* ---------- cycle banner ---------- */
  .cycle {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: .5rem .8rem;
    border-left: 3px solid var(--glow);
    background: var(--glow-soft);
    padding: .7rem .9rem;
    margin-bottom: 2.4rem;
    font-family: var(--mono);
    font-size: var(--step--1);
    line-height: 1.55;
  }
  .cycle-status {
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--cobalt);
    display: inline-flex;
    align-items: center;
    gap: .45rem;
  }
  .pip {
    width: .5rem; height: .5rem; flex: none;
    border-radius: 50%;
    background: var(--glow);
    box-shadow: 0 0 0 0 var(--glow);
    animation: pulse 2.6s ease-out infinite;
  }
  @keyframes pulse {
    0%   { box-shadow: 0 0 0 0 var(--glow); opacity: 1; }
    70%  { box-shadow: 0 0 0 .55rem transparent; opacity: .55; }
    100% { box-shadow: 0 0 0 0 transparent; opacity: 1; }
  }
  .cycle-detail { color: var(--ink-2); }

  /* ---------- title ---------- */
  .eyebrow {
    font-family: var(--mono);
    font-size: var(--step--1);
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: .5rem;
  }
  h1 {
    font-family: var(--fell);
    font-weight: 400;
    font-size: var(--step-4);
    line-height: 1.02;
    letter-spacing: -.005em;
    margin: 0;
    text-wrap: balance;
  }
  .dek {
    font-family: var(--fell);
    font-style: italic;
    font-size: var(--step-1);
    line-height: 1.45;
    color: var(--ink-2);
    margin: .85rem 0 0;
    max-width: 32ch;
    text-wrap: balance;
  }

  /* ---------- catalogue rail ---------- */
  .catalogue {
    display: grid;
    grid-template-columns: 9.5rem 1fr;
    gap: .1rem 1.2rem;
    margin: 2.2rem 0 3rem;
    padding-block: 1.1rem;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    font-family: var(--mono);
    font-size: var(--step--1);
    line-height: 1.62;
  }
  .catalogue dt {
    color: var(--ink-3);
    letter-spacing: .09em;
    text-transform: uppercase;
    font-size: .74rem;
    padding-top: .28rem;
  }
  .catalogue dd { margin: 0; color: var(--ink); }
  .catalogue dd em { font-style: normal; color: var(--cobalt); font-weight: 700; }

  /* ---------- sections ---------- */
  section { margin-block: 3rem; }
  h2 {
    font-family: var(--fellsc);
    font-weight: 400;
    font-size: var(--step-2);
    line-height: 1.2;
    letter-spacing: .015em;
    margin: 0 0 1rem;
    text-wrap: balance;
  }
  h2 .numeral {
    display: block;
    font-family: var(--mono);
    font-size: .72rem;
    letter-spacing: .2em;
    color: var(--glow);
    margin-bottom: .45rem;
  }
  p { margin: 0 0 1.15rem; }
  p:last-child { margin-bottom: 0; }
  .lede::first-letter {
    font-family: var(--fell);
    font-size: 3.1em;
    float: left;
    line-height: .82;
    padding: .06em .09em 0 0;
    color: var(--cobalt);
  }
  .transcript-note {
    font-family: var(--mono);
    font-size: var(--step--1);
    color: var(--ink-2);
    line-height: 1.6;
    border-left: 2px solid var(--rule);
    padding-left: .85rem;
    margin: 0 0 1.4rem;
  }
  strong { font-weight: 600; }
  .blue { color: var(--cobalt); font-weight: 600; }

  /* ---------- interval table ---------- */
  .table-wrap { overflow-x: auto; margin-block: 1.4rem; }
  table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--mono);
    font-size: var(--step--1);
    font-variant-numeric: tabular-nums;
  }
  caption {
    text-align: left;
    font-family: var(--mono);
    font-size: .74rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-3);
    padding-bottom: .6rem;
  }
  th, td {
    text-align: left;
    padding: .55rem .8rem .55rem 0;
    border-bottom: 1px solid var(--rule-soft);
    vertical-align: top;
  }
  thead th {
    font-weight: 700;
    font-size: .74rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ink-3);
    border-bottom: 1px solid var(--rule);
  }
  td.yr { color: var(--ink); font-weight: 700; white-space: nowrap; }
  tr.pending td { color: var(--cobalt); }
  tr.pending td.yr { color: var(--cobalt); }

  /* ---------- caretaker's log ---------- */
  .log {
    background: var(--paper-2);
    border: 1px solid var(--rule);
    box-shadow: 0 1px 0 var(--rule-soft), 0 12px 28px -22px rgba(0,0,0,.55);
    padding: 1.3rem 1.2rem 1.1rem;
    margin-block: 1.6rem;
    font-family: var(--mono);
    font-size: .93rem;
    line-height: 1.75;
  }
  .log-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .3rem 1rem;
    font-size: .72rem;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--ink-3);
    border-bottom: 1px solid var(--rule-soft);
    padding-bottom: .6rem;
    margin-bottom: .95rem;
  }
  .log p { margin-bottom: .9rem; }
  .log-sign {
    margin: 0;
    padding-top: .3rem;
    color: var(--ink-2);
  }

  /* ---------- chant ---------- */
  .chant {
    margin-block: 2.6rem;
    padding-block: 1.8rem;
    border-top: 3px double var(--rule);
    border-bottom: 3px double var(--rule);
    text-align: center;
  }
  .chant-label {
    font-family: var(--mono);
    font-size: .72rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 1.3rem;
  }
  .chant-verse {
    font-family: var(--fell);
    font-size: var(--step-1);
    line-height: 1.85;
    margin: 0 0 1.35rem;
    color: var(--ink);
  }
  .chant-verse:last-of-type { margin-bottom: 0; }

  /* ---------- notice ---------- */
  .notice {
    border: 2px solid var(--rust);
    background: var(--rust-bg);
    padding: 1.3rem 1.2rem;
    margin-block: 3rem;
  }
  .notice h2 {
    color: var(--rust);
    font-size: var(--step-1);
    margin-bottom: .3rem;
  }
  .notice-sub {
    font-family: var(--mono);
    font-size: var(--step--1);
    color: var(--ink-2);
    margin: 0 0 1.1rem;
  }
  .notice ol {
    margin: 0;
    padding-left: 1.3rem;
    display: flex;
    flex-direction: column;
    gap: .75rem;
  }
  .notice li { padding-left: .2rem; }
  .notice li::marker {
    font-family: var(--mono);
    font-weight: 700;
    color: var(--rust);
  }

  /* ---------- footer ---------- */
  .colophon {
    border-top: 1px solid var(--rule);
    margin-top: 3.4rem;
    padding-top: 1.3rem;
    font-family: var(--mono);
    font-size: .78rem;
    line-height: 1.75;
    color: var(--ink-3);
    display: flex;
    flex-direction: column;
    gap: .75rem;
  }
  .counter {
    align-self: flex-start;
    background: var(--paper-sunk);
    border: 1px solid var(--rule);
    padding: .3rem .6rem;
    letter-spacing: .12em;
    font-variant-numeric: tabular-nums;
    color: var(--ink-2);
  }

  @media (max-width: 34rem) {
    :root { --step-4: 2.3rem; --step-3: 1.8rem; --step-2: 1.4rem; }
    .catalogue { grid-template-columns: 1fr; gap: 0; }
    .catalogue dt { padding-top: .7rem; }
    .catalogue dd { padding-bottom: .15rem; }
  }

  /* ============ links ============ */
  a {
    color: var(--cobalt);
    text-decoration-thickness: 1px;
    text-underline-offset: .18em;
  }
  a:hover { text-decoration-thickness: 2px; }
  a:focus-visible {
    outline: 2px solid var(--glow);
    outline-offset: 3px;
    border-radius: 1px;
  }

  /* ============ breadcrumb (record pages) ============ */
  .breadcrumb {
    font-family: var(--mono);
    font-size: var(--step--1);
    color: var(--ink-3);
    margin: 0 0 1.6rem;
  }
  .breadcrumb a { color: var(--ink-2); }
  .breadcrumb span { padding-inline: .4rem; }

  /* ============ front page ============ */
  .intro {
    font-family: var(--fell);
    font-size: var(--step-1);
    line-height: 1.6;
    color: var(--ink);
    max-width: 38ch;
    margin: 0 0 2.4rem;
  }
  .intro-sub {
    font-size: var(--step-0);
    line-height: 1.72;
    color: var(--ink-2);
    max-width: 62ch;
    margin: 0 0 2.6rem;
    font-family: var(--serif);
  }

  .records { margin-block: 1rem 2.4rem; }
  .records-head {
    display: grid;
    grid-template-columns: 3.4rem 1fr 9rem;
    gap: 1rem;
    font-family: var(--mono);
    font-size: .72rem;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--ink-3);
    padding-bottom: .6rem;
    border-bottom: 1px solid var(--rule);
  }
  .record-row {
    display: grid;
    grid-template-columns: 3.4rem 1fr 9rem;
    gap: 1rem;
    padding-block: 1rem;
    border-bottom: 1px solid var(--rule-soft);
    align-items: start;
  }
  .record-no {
    font-family: var(--mono);
    font-size: var(--step--1);
    font-variant-numeric: tabular-nums;
    color: var(--ink-3);
    padding-top: .12rem;
  }
  .record-title {
    font-family: var(--fellsc);
    font-size: 1.16rem;
    letter-spacing: .015em;
    line-height: 1.3;
    margin: 0 0 .2rem;
  }
  .record-meta {
    font-family: var(--mono);
    font-size: .78rem;
    color: var(--ink-3);
    line-height: 1.6;
    margin: 0 0 .3rem;
  }
  .record-sum {
    font-size: .96rem;
    line-height: 1.6;
    color: var(--ink-2);
    margin: 0;
    max-width: 52ch;
  }
  .badge {
    font-family: var(--mono);
    font-size: .68rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    padding: .22rem .5rem;
    border: 1px solid var(--rule);
    color: var(--ink-3);
    justify-self: start;
    white-space: nowrap;
    line-height: 1.5;
  }
  .badge-active {
    border-color: var(--glow);
    background: var(--glow-soft);
    color: var(--cobalt);
    font-weight: 700;
  }
  .row-active { background: var(--glow-soft); }
  .row-active .record-no { color: var(--cobalt); }

  .submit-box {
    border-top: 3px double var(--rule);
    padding-top: 1.4rem;
    margin-top: 2.6rem;
  }
  .submit-box h2 { font-size: var(--step-1); margin-bottom: .7rem; }
  .submit-box p { font-size: .98rem; color: var(--ink-2); max-width: 58ch; }

  @media (max-width: 34rem) {
    .records-head { display: none; }
    .record-row {
      grid-template-columns: 2.8rem 1fr;
      row-gap: .55rem;
    }
    .badge { grid-column: 2; }
  }

  /* ============ plates (archive photographs) ============ */
  figure.plate {
    margin: 2rem 0;
    padding: 0;
  }
  figure.plate img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    background: var(--paper-sunk);
    border: 1px solid var(--rule);
    /* archive plates are mounted, not floated */
    box-shadow: 0 10px 26px -20px rgba(0,0,0,.7);
  }
  .plate-cap {
    font-family: var(--mono);
    font-size: .76rem;
    line-height: 1.65;
    color: var(--ink-2);
    margin: .65rem 0 0;
    padding-left: .1rem;
    max-width: 54ch;
  }
  .plate-no {
    color: var(--cobalt);
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
  }
  .plate-acc {
    color: var(--ink-3);
    letter-spacing: .06em;
  }
  /* a plate pair, side by side on wide screens */
  .plate-pair {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
    gap: 1.4rem;
    margin: 2rem 0;
  }
  .plate-pair figure.plate { margin: 0; }
  /* paired plates are cropped to a common frame so their captions sit on one line */
  .plate-pair figure.plate img {
    aspect-ratio: 3 / 4;
    object-fit: cover;
  }

  /* plates carrying a contemporary colour photograph are toned down so they
     sit on the paper instead of glaring off it */
  .plate-aged img {
    filter: saturate(.72) contrast(1.04) sepia(.14);
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .plate img { filter: brightness(.82) contrast(1.02); }
    :root:not([data-theme="light"]) .plate-aged img { filter: brightness(.74) saturate(.6) contrast(1.05) sepia(.16); }
  }
  :root[data-theme="dark"] .plate img { filter: brightness(.82) contrast(1.02); }
  :root[data-theme="dark"] .plate-aged img { filter: brightness(.74) saturate(.6) contrast(1.05) sepia(.16); }

  /* a plate set into the flow of a section, narrower than the full measure */
  figure.plate-inset {
    margin: 2rem auto;
    max-width: 22rem;
  }