:root{
  --paper:        #f4f0e8;
  --paper-deep:   #ece6da;
  --card:         #fbf8f2;
  --ink:          #1a1815;
  --ink-2:        #3a3530;
  --muted:        #8a8278;
  --muted-2:      #b5ad9f;
  --rule:         #d9d2c2;
  --rule-soft:    #e6dfd0;
  --accent:       oklch(0.55 0.12 40);
  --accent-soft:  oklch(0.94 0.03 60);
  --ok:           oklch(0.50 0.08 150);
  --ok-soft:      oklch(0.95 0.04 150);
  --warn:         oklch(0.58 0.10 75);
  --warn-soft:    oklch(0.95 0.05 80);
  --err:          oklch(0.55 0.12 25);
  --err-soft:     oklch(0.95 0.04 25);

  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans:  "Geist", "Helvetica Neue", Helvetica, system-ui, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, Menlo, monospace;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
body{min-height:100vh;padding:48px 28px 80px}

/* paper grain */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(60,40,10,.025) 1px, transparent 1px);
  background-size:3px 3px;opacity:.6;
}

#app{position:relative;z-index:1;max-width:1180px;margin:0 auto}

/* ── Top bar ─────────────────────────────────────────────────── */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:24px;border-bottom:1px solid var(--rule);
  margin-bottom:48px;
}
/* .brand is a <div> on the home page but an <a href="/"> on pricing/account.
   Without these resets the anchor inherits the browser's link colour
   (purple when visited) + underline, tinting the wordmark. */
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}
.brand .mark{
  width:34px;height:34px;border-radius:7px;
  background:var(--ink);color:var(--paper);
  display:grid;place-items:center;
  font-family:var(--serif);font-size:22px;line-height:1;
  font-style:italic;letter-spacing:-.02em;
  padding-bottom:2px;
}
.brand .name{font-family:var(--serif);font-size:22px;letter-spacing:-.01em}
.brand .name em{font-style:italic;color:var(--accent);font-weight:400}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.04em;text-transform:uppercase;margin-top:2px}

.topbar .nav{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--muted)}
.topbar .nav a{color:inherit;text-decoration:none}
.topbar .nav a:hover{color:var(--ink)}

/* Free-tier counter pill in the nav */
.free-counter{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--rule);background:var(--card);
  color:var(--ink-2);font-size:12px;letter-spacing:.005em;
  font-family:var(--mono);
  cursor:pointer;transition:border-color .15s, color .15s, background .15s;
}
.free-counter .dot{
  width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 3px var(--ok-soft);flex:0 0 auto;
}
.free-counter .of{color:var(--muted);}
.free-counter:hover{border-color:var(--ink-2);color:var(--ink)}
.free-counter.is-empty{
  background:var(--warn-soft);
  border-color:color-mix(in oklab, var(--warn), transparent 70%);
  color:var(--warn);
}
.free-counter.is-empty .dot{background:var(--warn);box-shadow:0 0 0 3px color-mix(in oklab, var(--warn), transparent 80%)}
.free-counter.is-low{
  border-color:color-mix(in oklab, var(--warn), transparent 80%);
}
.free-counter.is-low .dot{background:var(--warn)}
.paper-meta .refund-note{color:var(--accent)}
.limit-error{
  color:var(--warn);
  font-size:13px;
  text-align:center;
  margin:8px 0 0;
  padding:8px 12px;
  background:rgba(180, 90, 20, 0.08);
  border:1px solid rgba(180, 90, 20, 0.25);
  border-radius:6px;
}
.limit-current-plan{
  font-size:12.5px;
  text-align:center;
  margin:8px 0 0;
  color:var(--ink-2);
}
.limit-option.is-recommended{
  border-color:var(--accent);
  background:color-mix(in oklab, var(--accent), white 92%);
}
button.limit-option{
  text-align:left;
  font:inherit;
  color:inherit;
  cursor:pointer;
}
button.limit-option:disabled{opacity:.5;cursor:not-allowed}

/* Sign-in pill + user chip */
.signin-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--ink);background:var(--ink);color:var(--paper);
  font-size:12px;font-weight:500;text-decoration:none;
  transition:filter .15s;
}
.signin-btn:hover{filter:brightness(.92)}
.user-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:2px 4px;border-radius:999px;
}
.user-avatar{
  width:26px;height:26px;border-radius:50%;
  background:var(--card);border:1px solid var(--rule);
  object-fit:cover;
}
.user-avatar-fallback{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-style:italic;font-size:13px;color:var(--ink);
}
/* Click the profile circle → /account */
.avatar-link{display:inline-flex;align-items:center;border-radius:50%}
.avatar-link:hover .user-avatar{border-color:var(--ink-2)}
.signout-link{
  color:var(--muted);text-decoration:none;font-size:13px;line-height:1;
  padding:2px 4px;border-radius:4px;transition:color .15s;
}
.signout-link:hover{color:var(--ink)}
.admin-link{
  color:var(--accent);text-decoration:none;font-size:12px;font-weight:500;
  padding:3px 10px;border:1px dashed var(--accent);border-radius:999px;
  letter-spacing:.05em;text-transform:uppercase;
}
.admin-link:hover{background:var(--accent);color:#fff}

/* Consent modal */
.consent-modal{
  position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(26,24,21,.45);z-index:50;padding:24px;
}
.consent-card{
  background:var(--paper);border:1px solid var(--rule);border-radius:14px;
  padding:28px 32px;max-width:480px;width:100%;
  box-shadow:0 10px 50px rgba(0,0,0,.25);
}
.consent-eyebrow{
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);
  margin-bottom:6px;font-weight:500;
}
.consent-card h3{
  font-family:var(--serif);font-weight:400;font-size:24px;color:var(--ink);
  margin-bottom:10px;letter-spacing:-.01em;
}
.consent-card p{font-size:13.5px;color:var(--ink-2);line-height:1.55;margin-bottom:18px}
.consent-card a{color:var(--accent);text-decoration:none;border-bottom:1px dashed var(--accent)}
.consent-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.consent-bail{font-size:12px;color:var(--muted);text-decoration:none;border-bottom:1px solid var(--rule)}
.consent-bail:hover{color:var(--ink-2)}

/* ── Hero ────────────────────────────────────────────────────── */
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:end;margin-bottom:40px}
.hero h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(44px,6vw,76px);line-height:1.02;letter-spacing:-.025em;
  color:var(--ink);
}
.hero h1 em{font-style:italic;color:var(--accent)}
.hero h1 .underline{
  display:inline-block;border-bottom:2px solid var(--ink);padding-bottom:2px;
}
.hero .lede{font-size:15.5px;color:var(--ink-2);max-width:42ch;line-height:1.55}

/* ── Upload pane ─────────────────────────────────────────────── */
.work{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;margin-bottom:32px}
.panel{
  background:var(--card);border:1px solid var(--rule);border-radius:14px;
  padding:24px;position:relative;
}
.panel.dashed{border-style:dashed;background:transparent;transition:border-color .2s, background .2s}
.panel.dashed:hover,
.panel.dashed.drag-over{border-color:var(--ink-2);background:var(--card)}
.panel-label{
  display:flex;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  margin-bottom:14px;
}
.panel-label .num{
  font-family:var(--serif);font-style:italic;font-size:18px;color:var(--ink);
  line-height:1;letter-spacing:0;text-transform:none;
}
.panel h3{font-family:var(--serif);font-weight:400;font-size:24px;letter-spacing:-.01em;margin-bottom:6px}
.panel p.hint{color:var(--muted);font-size:13px;margin-bottom:18px}

.drop{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:34px 18px 22px;
  border:1px dashed var(--rule);border-radius:10px;background:rgba(255,255,255,.4);
  cursor:pointer;transition:border-color .2s,background .2s;
}
.drop:hover{border-color:var(--ink-2);background:#fff}
.drop svg{margin-bottom:14px}
.drop .primary{font-size:14px;color:var(--ink);margin-bottom:4px}
.drop .primary u{text-decoration-color:var(--accent);text-underline-offset:3px}
.drop .types{font-family:var(--mono);font-size:10.5px;color:var(--muted-2);letter-spacing:.05em;margin-top:6px}

textarea.paste{
  width:100%;min-height:160px;resize:vertical;
  border:1px solid var(--rule);border-radius:10px;
  background:#fff;padding:14px 16px;
  font:inherit;font-size:13px;line-height:1.6;color:var(--ink-2);
  outline:none;transition:border-color .2s, box-shadow .2s;
}
textarea.paste::placeholder{color:var(--muted-2);font-style:italic}
textarea.paste:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(26,24,21,.06)}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn{
  appearance:none;border:0;cursor:pointer;font:inherit;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:8px;
  font-size:13.5px;font-weight:500;letter-spacing:.005em;
  transition:transform .05s, background .15s, color .15s, border-color .15s;
}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;cursor:default}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.primary:hover:not(:disabled){background:#000}
.btn.ghost{background:transparent;border:1px solid var(--rule);color:var(--ink-2)}
.btn.ghost:hover:not(:disabled){border-color:var(--ink);color:var(--ink)}
.btn.accent{background:var(--accent);color:#fff}
.btn.accent:hover:not(:disabled){filter:brightness(.95)}
.btn.small{padding:6px 12px;font-size:12px}
.btn .arrow{font-family:var(--serif);font-style:italic}
.row-actions{display:flex;align-items:center;justify-content:space-between;margin-top:14px;gap:10px;flex-wrap:wrap}
.row-actions .help{font-size:12px;color:var(--muted)}

/* aside callout */
.ticks-panel{display:flex;gap:48px;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;margin-bottom:32px}
.ticks{display:flex;flex-direction:column;gap:10px;flex:1;min-width:240px}
.tick{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2)}
.tick svg{flex:0 0 auto;margin-top:3px;color:var(--accent)}
.tick b{font-weight:500;color:var(--ink)}

/* ── Loading phase ──────────────────────────────────────────── */
.loading-panel{
  background:var(--card);border:1px solid var(--rule);border-radius:14px;
  padding:32px 28px;margin-bottom:24px;
}
.loading-head{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-bottom:16px;
}
.spinner{
  width:18px;height:18px;flex:0 0 auto;
  border:2px solid var(--rule);
  border-top-color:var(--ink);
  border-radius:50%;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.status-msg{font-size:14px;color:var(--ink-2);flex:1;min-width:200px}
.progress-track{
  height:4px;background:var(--rule-soft);border-radius:2px;overflow:hidden;
  margin:14px 0 10px;
}
.progress-fill{
  height:100%;background:var(--ink);border-radius:2px;
  transition:width .3s ease;
}
.joke{
  color:var(--muted);font-style:italic;font-size:12.5px;font-family:var(--serif);
  min-height:1.4em;letter-spacing:.005em;
}

/* ── Results header ──────────────────────────────────────────── */
.results-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:18px;
}
.paper-card{flex:1;min-width:300px}
.paper-eyebrow{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.paper-title{
  font-family:var(--serif);font-size:24px;line-height:1.2;letter-spacing:-.01em;
  color:var(--ink);max-width:60ch;
  overflow:hidden;text-overflow:ellipsis;
}
.paper-meta{display:flex;gap:18px;color:var(--muted);font-size:12px;margin-top:8px;font-family:var(--mono);flex-wrap:wrap}
.paper-meta .partial{color:var(--warn)}
.results-actions{display:flex;gap:8px;flex-wrap:wrap}

.summary{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--rule);border-radius:12px;overflow:hidden;
  background:var(--card);
  margin-bottom:24px;
}
.summary .cell{padding:18px 20px;border-right:1px solid var(--rule)}
.summary .cell:last-child{border-right:0}
.summary .label{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;display:flex;align-items:center;gap:6px}
.summary .label .sw{width:8px;height:8px;border-radius:2px}
.summary .num{font-family:var(--serif);font-size:36px;line-height:1;letter-spacing:-.02em;color:var(--ink)}
.summary .num small{font-size:14px;font-family:var(--sans);color:var(--muted);font-weight:400;margin-left:4px}
.summary .bar{height:3px;border-radius:2px;background:var(--rule-soft);margin-top:12px;overflow:hidden}
.summary .bar > span{display:block;height:100%;border-radius:2px}

.sw.ok{background:var(--ok)} .bar-ok{background:var(--ok)}
.sw.warn{background:var(--warn)} .bar-warn{background:var(--warn)}
.sw.miss{background:var(--muted-2)} .bar-miss{background:var(--muted-2)}
.sw.total{background:var(--ink)} .bar-total{background:var(--ink)}

.sub-counts{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:6px;
  font-size:11.5px;font-family:var(--mono);color:var(--muted);
}
.sub-counts .err-count{color:var(--err)}

/* ── Toolbar above table ─────────────────────────────────────── */
.toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:14px;
}
.col-toggles{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.col-toggles .lbl{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-right:6px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;border:1px solid var(--rule);
  background:var(--card);color:var(--muted);font-size:12px;cursor:pointer;
  transition:all .15s;user-select:none;
}
.chip:hover{color:var(--ink-2);border-color:var(--muted-2)}
.chip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.pager{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.pager label{display:flex;align-items:center;gap:6px}
.pager select{
  appearance:none;background:var(--card);border:1px solid var(--rule);
  border-radius:6px;padding:4px 26px 4px 10px;font:inherit;font-size:12px;color:var(--ink-2);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M3 5l3 3 3-3' stroke='%238a8278' fill='none' stroke-width='1.4' stroke-linecap='round'/></svg>");
  background-repeat:no-repeat;background-position:right 8px center;
  cursor:pointer;
}
.pager .pgnum{font-family:var(--mono);font-size:11.5px;color:var(--ink-2)}
.icon-btn{
  width:28px;height:28px;border-radius:6px;border:1px solid var(--rule);
  background:var(--card);color:var(--ink-2);display:inline-grid;place-items:center;
  cursor:pointer;font:inherit;font-size:14px;
}
.icon-btn:hover:not(:disabled){border-color:var(--ink);color:var(--ink)}
.icon-btn:disabled{opacity:.35;cursor:default}

/* ── Table ──────────────────────────────────────────────────── */
.table-wrap{
  border:1px solid var(--rule);border-radius:14px;overflow:hidden;
  background:var(--card);margin-bottom:18px;
  overflow-x:auto;
}
table{width:100%;border-collapse:separate;border-spacing:0;font-size:13px}
thead th{
  color:var(--muted);
  font-weight:500;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  text-align:left;padding:14px 14px 12px;
  border-bottom:1px solid var(--rule);
  position:sticky;top:0;background:var(--card);z-index:1;
  white-space:nowrap;
}
thead th.center{text-align:center}
tbody td{padding:14px;border-bottom:1px solid var(--rule-soft);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background .12s}
tbody tr:hover{background:rgba(0,0,0,.012)}

.col-num{width:64px}
.num-wrap{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.status-pip{
  width:8px;height:8px;border-radius:50%;flex:0 0 auto;background:var(--muted-2);
  box-shadow:0 0 0 3px rgba(255,255,255,.6);
}
.status-pip.ok{background:var(--ok)}
.status-pip.warn{background:var(--warn)}
.status-pip.miss{background:var(--muted-2)}
.status-pip.err{background:var(--err)}
.status-pip.pending{background:transparent;border:1.5px solid var(--muted-2);box-shadow:none;animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35}}

.col-ref{min-width:340px;line-height:1.55;color:var(--ink-2);word-break:break-word}
.col-ref .author{color:var(--ink);font-weight:500}
.col-ref .year{font-family:var(--mono);font-size:11.5px;color:var(--muted)}
.col-ref .title{font-style:italic;color:var(--ink-2)}
.col-ref .raw-fallback{color:var(--ink-2)}

.col-search{width:108px;white-space:nowrap}
.ext-link{
  display:inline-flex;align-items:center;gap:5px;
  color:var(--ink-2);text-decoration:none;font-size:12.5px;
  border-bottom:1px solid var(--rule);padding-bottom:1px;
}
.ext-link:hover{color:var(--accent);border-bottom-color:var(--accent)}
.ext-link svg{opacity:.5;flex:0 0 auto}

.col-doi{width:220px}
.doi-link{font-family:var(--mono);font-size:11.5px;color:var(--ink-2);text-decoration:none;word-break:break-all;border-bottom:1px dashed var(--rule)}
.doi-link:hover{color:var(--accent);border-bottom-color:var(--accent)}
.doi-input{
  width:calc(100% - 18px);border:0;border-bottom:1px dashed var(--rule);background:transparent;
  font-family:var(--mono);font-size:11.5px;color:var(--muted);outline:none;padding:2px 0;
}
.doi-input:focus{border-bottom-color:var(--ink);color:var(--ink)}
.doi-input::placeholder{color:var(--muted-2);font-style:italic}
.doi-ext{
  font-family:var(--mono);font-size:11px;color:var(--muted-2);text-decoration:none;
  margin-left:4px;
}
.doi-ext:hover{color:var(--accent)}

.col-detail{min-width:160px;color:var(--muted);font-size:12.5px;line-height:1.5}
.col-detail .detail-text{margin-top:4px}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:2px 8px;border-radius:4px;
  font-size:10.5px;letter-spacing:.04em;text-transform:uppercase;font-weight:500;
  border:1px solid transparent;
}
.badge.ok{background:var(--ok-soft);color:var(--ok);border-color:color-mix(in oklab, var(--ok), transparent 75%)}
.badge.warn{background:var(--warn-soft);color:var(--warn);border-color:color-mix(in oklab, var(--warn), transparent 75%)}
.badge.miss{background:#ece6da;color:var(--muted);border-color:var(--rule)}
.badge.err{background:var(--err-soft);color:var(--err);border-color:color-mix(in oklab, var(--err), transparent 75%)}
.badge.pending{background:transparent;color:var(--muted-2);border-color:var(--rule)}

.col-verify{width:96px;text-align:center}
.verify-btn{
  appearance:none;cursor:pointer;font:inherit;
  width:36px;height:28px;border-radius:6px;
  border:1px solid var(--rule);background:var(--card);
  color:var(--muted-2);display:inline-grid;place-items:center;
  transition:all .15s;
}
.verify-btn:hover:not(:disabled){border-color:var(--ink-2);color:var(--ink-2)}
.verify-btn.verify-ok{background:var(--ok-soft);border-color:color-mix(in oklab, var(--ok), transparent 70%);color:var(--ok)}
.verify-btn.verify-notok{background:var(--err-soft);border-color:color-mix(in oklab, var(--err), transparent 70%);color:var(--err)}
.verify-btn:disabled{opacity:.3;cursor:default}

/* ── Selection column ──────────────────────────────────────── */
.col-select{width:36px}
.col-select input[type=checkbox]{
  appearance:none;width:14px;height:14px;
  border:1.5px solid var(--rule);border-radius:3px;background:var(--card);
  cursor:pointer;display:inline-block;vertical-align:middle;
  transition:border-color .15s, background .15s;
  position:relative;
}
.col-select input[type=checkbox]:hover:not(:disabled){border-color:var(--ink-2)}
.col-select input[type=checkbox]:checked{background:var(--ink);border-color:var(--ink)}
.col-select input[type=checkbox]:checked::after{
  content:"";position:absolute;left:3px;top:0px;width:6px;height:9px;
  border:solid var(--paper);border-width:0 1.6px 1.6px 0;transform:rotate(45deg);
}
.col-select input[type=checkbox]:indeterminate{background:var(--ink);border-color:var(--ink)}
.col-select input[type=checkbox]:indeterminate::after{
  content:"";position:absolute;left:2px;top:5px;width:8px;height:1.5px;background:var(--paper);
}
.col-select input[type=checkbox]:disabled{opacity:.3;cursor:default}

/* ── BibTeX column + expanded row ──────────────────────────── */
.col-bibtex{width:64px}
.bib-btn{
  appearance:none;cursor:pointer;font:inherit;font-family:var(--mono);
  width:36px;height:28px;border-radius:6px;
  border:1px solid var(--rule);background:var(--card);
  color:var(--muted-2);font-size:11.5px;letter-spacing:-.02em;
  display:inline-grid;place-items:center;transition:all .15s;
}
.bib-btn:hover:not(:disabled){border-color:var(--ink-2);color:var(--ink-2)}
.bib-btn.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.bib-btn:disabled{opacity:.3;cursor:default}

.bib-row td{background:rgba(0,0,0,.025);border-bottom:1px solid var(--rule);padding:14px 18px}
.bib-cell .bib-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px;
}
.bib-cell .bib-label{
  font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
}
.bib-pre{
  font-family:var(--mono);font-size:11.5px;line-height:1.55;color:var(--ink-2);
  background:var(--card);border:1px solid var(--rule);border-radius:8px;
  padding:12px 14px;white-space:pre-wrap;word-break:break-word;margin:0;
}

/* ── Error phase ────────────────────────────────────────────── */
.error-box{
  background:var(--err-soft);border:1px solid color-mix(in oklab, var(--err), transparent 70%);
  border-radius:14px;padding:32px;text-align:center;
  margin-bottom:24px;
}
.error-box p{color:var(--err);margin-bottom:18px;font-size:14px}

/* ── Free-tier limit reached (friendly upsell panel) ──────── */
.limit-box{
  background:var(--card);border:1px solid var(--rule);border-radius:14px;
  padding:32px 32px 28px;margin-bottom:32px;
}
.limit-head{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--rule-soft)}
.limit-eyebrow{
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--warn);margin-bottom:6px;font-weight:500;
}
.limit-head h3{
  font-family:var(--serif);font-weight:400;font-size:26px;line-height:1.2;
  letter-spacing:-.01em;color:var(--ink);max-width:48ch;
}
.limit-reset{color:var(--muted);font-size:13px;margin-top:8px}
.limit-reset b{color:var(--ink-2);font-weight:500}

.limit-options{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:24px;
}
.limit-option{
  display:flex;gap:12px;padding:18px;border:1px dashed var(--rule);border-radius:10px;
  background:rgba(255,255,255,.4);transition:border-color .2s, background .2s;
}
.limit-option:hover{border-color:var(--muted-2);background:#fff}
.limit-option .opt-num{
  font-family:var(--serif);font-style:italic;font-size:22px;color:var(--accent);
  line-height:1;flex:0 0 auto;
}
.limit-option .opt-body h4{
  font-family:var(--serif);font-weight:400;font-size:17px;color:var(--ink);
  margin-bottom:4px;letter-spacing:-.005em;
}
.limit-option .opt-body p{
  font-size:12.5px;color:var(--muted);line-height:1.5;
}
.limit-option .opt-body p em{
  color:var(--accent);font-style:normal;font-size:11px;
  letter-spacing:.06em;text-transform:uppercase;margin-left:2px;
}

.limit-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.limit-actions .btn.primary{text-decoration:none}

/* ── Colophon ───────────────────────────────────────────────── */
.colophon{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--rule);
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;
  font-size:12.5px;color:var(--muted);
}
.colophon h4{font-family:var(--serif);font-weight:400;font-size:18px;color:var(--ink);margin-bottom:8px;letter-spacing:-.01em}
.colophon p{line-height:1.6;max-width:54ch}
.colophon p + p{margin-top:8px}
.colophon a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--rule)}
.colophon a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.sources{display:flex;flex-direction:column;gap:6px}
.source-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:6px 0;border-bottom:1px dashed var(--rule);font-family:var(--mono);font-size:11.5px}
.source-row:last-child{border-bottom:0}
.source-row .live{color:var(--ok)}

/* feedback box embedded in colophon */
.feedback-box{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.feedback-textarea{
  width:100%;border:1px solid var(--rule);border-radius:8px;
  padding:10px 12px;font:inherit;font-size:12.5px;color:var(--ink-2);
  background:var(--card);resize:vertical;outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.feedback-textarea:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(26,24,21,.06)}
.feedback-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.feedback-email{
  flex:1;min-width:140px;border:1px solid var(--rule);border-radius:8px;
  padding:7px 10px;font:inherit;font-size:12.5px;color:var(--ink-2);
  background:var(--card);outline:none;transition:border-color .2s;
}
.feedback-email:focus{border-color:var(--ink)}
.feedback-status{font-size:11.5px;color:var(--muted);font-family:var(--mono)}

.signoff{margin-top:36px;padding-top:14px;border-top:1px solid var(--rule);display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);letter-spacing:.04em;flex-wrap:wrap;gap:12px;text-transform:uppercase}
.signoff a{color:inherit;text-decoration:none}
.signoff a:hover{color:var(--ink-2)}

/* ── Mobile (≤ 880 px) ──────────────────────────────────────── */
@media (max-width:880px){
  .hero{grid-template-columns:1fr;gap:28px}
  .work{grid-template-columns:1fr}
  .summary{grid-template-columns:repeat(2,1fr)}
  .summary .cell:nth-child(2){border-right:0}
  .summary .cell:nth-child(1),.summary .cell:nth-child(2){border-bottom:1px solid var(--rule)}
  .colophon{grid-template-columns:1fr}
  .limit-options{grid-template-columns:1fr}
}

/* ── Mobile (≤ 640 px) — tighter spacing ─────────────────────── */
@media (max-width:640px){
  body{padding:24px 16px 60px}
  .topbar{margin-bottom:32px;flex-wrap:wrap;gap:12px}
  .topbar .nav{font-size:12px;gap:14px}
  .hero{margin-bottom:28px}
  .hero h1{font-size:clamp(34px,9vw,52px)}
  .panel{padding:20px}
  .ticks-panel{gap:24px}
  .col-search,.col-doi,.col-verify{width:auto}
  .btn.small{padding:8px 14px;font-size:13px}
}