/* Craft of Reporting - classic textbook sheet. Parchment ground, oxblood rules,
   serif throughout, numbered chapter gutter, marginal notes. Site-local, no imports. */
:root{
  --leaf:#fbf6e9;
  --parchment:#f1e7cf;
  --parchment-2:#e8dab8;
  --ink:#221e18;
  --ink-2:#4d443a;
  --ink-3:#6d6252;
  --oxblood:#6d1f24;
  --oxblood-2:#4a1216;
  --brass:#8a6a22;
  --rule:#cdb987;
  --rule-2:#e2d5b2;
  --measure:36rem;
  --serif:"Palatino Linotype",Palatino,"Book Antiqua","URW Palladio L","Iowan Old Style",Georgia,"Times New Roman",serif;
  --serif-2:"Hoefler Text",Baskerville,"Times New Roman",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body.bk-body{
  margin:0;background:var(--parchment);color:var(--ink);
  font-family:var(--serif);font-size:1.0625rem;line-height:1.68;
  text-rendering:optimizeLegibility;
}
body.bk-locked{overflow:hidden}
img,svg{max-width:100%;height:auto}
a{color:var(--oxblood);text-decoration:underline;text-underline-offset:.14em}
a:hover{color:var(--oxblood-2)}
:focus-visible{outline:3px solid var(--oxblood);outline-offset:2px}
h1,h2,h3,h4{font-family:var(--serif-2);font-weight:600;line-height:1.22;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(1.9rem,4.4vw,2.9rem);letter-spacing:-.01em}
h2{font-size:clamp(1.35rem,2.6vw,1.75rem)}
h3{font-size:1.12rem}
p{margin:0 0 1.05em}
.bk-skip{position:absolute;left:-9999px;top:0;background:var(--oxblood);color:#fff;padding:.7rem 1.1rem;z-index:60}
.bk-skip:focus{left:.6rem;top:.6rem}

/* --- strips, masthead --- */
.bk-notice{
  background:var(--oxblood);color:#f6ead2;font-size:.845rem;letter-spacing:.015em;
  padding:.6rem 1.15rem;text-align:center;border-bottom:2px solid var(--oxblood-2);
}
.bk-band{width:min(74rem,100% - 2.4rem);margin-inline:auto}
.bk-narrow{width:min(48rem,100% - 2.4rem)}
.bk-masthead{background:var(--leaf);border-bottom:1px solid var(--rule);box-shadow:0 2px 0 var(--rule-2)}
.bk-masthead-row{display:flex;align-items:center;gap:1rem;padding:.9rem 0;flex-wrap:wrap}
.bk-imprint{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:inherit}
.bk-crest{
  width:2.7rem;height:2.7rem;flex:none;display:grid;place-items:center;background:var(--oxblood);
  color:#f4e8cf;font-family:var(--serif-2);font-size:.98rem;letter-spacing:.06em;border-radius:2px;
  border:1px solid var(--oxblood-2);
}
.bk-imprint-name{display:flex;flex-direction:column;font-family:var(--serif-2);font-size:1.14rem}
.bk-imprint-name small{font-family:var(--serif);font-size:.74rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3)}
.bk-menu{
  margin-left:auto;font:inherit;font-size:.9rem;background:transparent;color:var(--oxblood);
  border:1px solid var(--rule);border-radius:2px;padding:.45rem .85rem;cursor:pointer;
}
.bk-menu[aria-expanded=true]{background:var(--oxblood);color:#f6ead2;border-color:var(--oxblood-2)}
#bk-nav{display:none;width:100%;flex-direction:column;gap:.1rem;padding-bottom:.6rem}
#bk-nav.bk-open{display:flex}
#bk-nav a{
  text-decoration:none;font-size:.98rem;padding:.5rem .2rem;border-bottom:1px dotted var(--rule);
  color:var(--ink);
}
#bk-nav a:hover{color:var(--oxblood)}
@media (min-width:60rem){
  .bk-menu{display:none}
  #bk-nav{display:flex;flex-direction:row;width:auto;margin-left:auto;gap:1.15rem;padding:0}
  #bk-nav a{border-bottom:2px solid transparent;padding:.2rem 0;font-size:.95rem}
  #bk-nav a:hover{border-bottom-color:var(--oxblood)}
}

/* --- generic sheet --- */
.bk-sheet{padding:2.6rem 0}
.bk-sheet-tint{background:var(--leaf);border-top:1px solid var(--rule-2);border-bottom:1px solid var(--rule-2)}
.bk-rubric{
  font-size:.78rem;letter-spacing:.17em;text-transform:uppercase;color:var(--brass);
  margin:0 0 .7rem;font-family:var(--serif)
}
.bk-lead{font-size:1.16rem;color:var(--ink-2);max-width:44rem}
.bk-caution{
  border-left:4px solid var(--oxblood);background:#f7eedd;padding:.85rem 1rem;font-size:.94rem;
  color:var(--ink-2);margin:1.3rem 0 0;max-width:44rem
}

/* --- frontispiece (home hero) --- */
.bk-front{background:var(--leaf);border-bottom:1px solid var(--rule);padding:2.9rem 0 3.1rem}
.bk-front-grid{display:grid;gap:2.2rem;align-items:start}
@media (min-width:62rem){.bk-front-grid{grid-template-columns:1.08fr .92fr;gap:3rem}}
.bk-front h1{margin-bottom:.7rem}
.bk-front-figure{border:1px solid var(--rule);background:var(--parchment);padding:.75rem}
.bk-front-figure figcaption{font-size:.82rem;color:var(--ink-3);padding-top:.55rem;border-top:1px dotted var(--rule)}
.bk-stamp{
  border:2px double var(--oxblood);padding:.9rem 1rem;margin-top:1.4rem;font-size:.94rem;color:var(--ink-2)
}
.bk-stamp strong{color:var(--oxblood)}
.bk-cta{
  display:inline-block;background:var(--oxblood);color:#f7ecd6;text-decoration:none;
  padding:.7rem 1.3rem;border:1px solid var(--oxblood-2);font-size:1rem
}
.bk-cta:hover{background:var(--oxblood-2);color:#fff}
.bk-cta-row{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center;margin:1.3rem 0 0}
.bk-cta-alt{text-decoration:none;border-bottom:1px solid var(--rule);padding-bottom:.15rem}

/* --- chapter layout --- */
.bk-chapter-head{background:var(--leaf);border-bottom:1px solid var(--rule);padding:2.4rem 0 2.1rem}
.bk-book{display:grid;gap:2.1rem;padding:2.4rem 0}
@media (min-width:64rem){.bk-book{grid-template-columns:15rem 1fr;gap:3rem}}
.bk-rail{font-size:.92rem;align-self:start}
@media (min-width:64rem){.bk-rail{position:sticky;top:1.2rem}}
.bk-rail-title{
  font-size:.75rem;letter-spacing:.16em;text-transform:uppercase;color:var(--brass);
  border-bottom:1px solid var(--rule);padding-bottom:.4rem;margin:0 0 .6rem
}
.bk-rail ol{margin:0;padding-left:1.35rem;color:var(--ink-2)}
.bk-rail li{margin-bottom:.42rem}
.bk-rail a{text-decoration:none;border-bottom:1px dotted var(--rule)}
.bk-text{max-width:var(--measure)}
.bk-text.bk-wide{max-width:44rem}
.bk-chapter{
  position:relative;padding:1.1rem 0 .4rem;border-top:1px solid var(--rule-2);margin-bottom:1.5rem
}
.bk-chapter:first-child{border-top:0}
.bk-chapter-no{
  font-family:var(--serif-2);font-size:2rem;line-height:1;color:var(--oxblood);opacity:.65;
  margin:0 0 .3rem
}
@media (min-width:78rem){
  .bk-chapter-no{position:absolute;left:-4.4rem;top:1.15rem;margin:0}
}
.bk-margin{
  border-left:3px solid var(--brass);background:#f6eedd;padding:.7rem .85rem;font-size:.9rem;
  color:var(--ink-2);margin:0 0 1.05em
}
.bk-margin strong{display:block;font-family:var(--serif-2);font-size:.82rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--brass);margin-bottom:.25rem}
@media (min-width:78rem){
  .bk-margin{float:right;width:13.5rem;margin:.2rem -15.5rem .9rem 1.4rem;background:transparent;
    border-left:1px solid var(--rule)}
}

/* --- text furniture --- */
.bk-list,.bk-steps{margin:0 0 1.15em;padding-left:1.3rem}
.bk-list li,.bk-steps li{margin-bottom:.42rem}
.bk-tally{list-style:none;margin:0 0 1.2em;padding:0}
.bk-tally li{position:relative;padding-left:1.7rem;margin-bottom:.5rem}
.bk-tally li::before{
  content:"";position:absolute;left:0;top:.45em;width:.72rem;height:.72rem;
  border:1px solid var(--oxblood);background:var(--leaf)
}
.bk-exercise{border:1px solid var(--rule);background:var(--leaf);padding:1.1rem 1.2rem;margin:0 0 1.4rem}
.bk-exercise h3{margin-top:0;color:var(--oxblood)}
.bk-plate{border:1px solid var(--rule);background:var(--leaf);padding:1.05rem 1.15rem;margin:0 0 1.3rem}
.bk-plate h3{margin-top:0}
.bk-formula{border-top:2px solid var(--oxblood);border-bottom:1px solid var(--rule);background:#f7efdf;
  padding:1rem 1.1rem;margin:0 0 1.4rem}
.bk-formula code,code{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  font-size:.9rem;background:#efe3c6;padding:.12rem .35rem;border:1px solid var(--rule-2)
}
.bk-formula code{display:inline-block;margin-bottom:.35rem}
.bk-figure{overflow-x:auto;margin:0 0 1.5rem;border:1px solid var(--rule);background:var(--leaf)}
table{border-collapse:collapse;width:100%;font-size:.94rem}
caption{
  caption-side:top;text-align:left;padding:.75rem .9rem;font-size:.84rem;letter-spacing:.05em;
  text-transform:uppercase;color:var(--brass);border-bottom:1px solid var(--rule)
}
th,td{padding:.6rem .9rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--rule-2)}
thead th{background:var(--parchment-2);font-family:var(--serif-2);font-size:.9rem}
tbody tr:last-child td{border-bottom:0}
.bk-timeline{list-style:none;margin:0 0 1.5rem;padding:0;border-left:2px solid var(--rule)}
.bk-timeline li{position:relative;padding:0 0 .95rem 1.2rem}
.bk-timeline li::before{content:"";position:absolute;left:-.36rem;top:.5em;width:.6rem;height:.6rem;
  background:var(--oxblood);border-radius:50%}
.bk-when{display:block;font-family:var(--serif-2);font-size:.82rem;letter-spacing:.09em;
  text-transform:uppercase;color:var(--oxblood)}
dl.bk-terms{margin:0 0 1.5rem}
dl.bk-terms div{border-top:1px solid var(--rule-2);padding:.75rem 0}
dl.bk-terms dt{font-family:var(--serif-2);font-size:1.02rem;color:var(--oxblood-2)}
dl.bk-terms dd{margin:.28rem 0 0;color:var(--ink-2)}
details{border-bottom:1px solid var(--rule-2);padding:.7rem 0}
details summary{cursor:pointer;font-family:var(--serif-2);font-size:1.02rem}
details summary::marker{color:var(--oxblood)}
details p{margin:.55rem 0 0;color:var(--ink-2)}
.bk-quires{display:grid;gap:1.1rem;margin:0 0 1.4rem}
@media (min-width:44rem){.bk-quires{grid-template-columns:repeat(2,1fr)}}
@media (min-width:70rem){.bk-quires.bk-three{grid-template-columns:repeat(3,1fr)}}
.bk-card{
  border:1px solid var(--rule);background:var(--leaf);padding:1.1rem 1.15rem;display:flex;
  flex-direction:column;gap:.35rem
}
a.bk-card{text-decoration:none;color:inherit}
a.bk-card:hover{border-color:var(--oxblood);background:#f8f1e0}
.bk-card-no{font-family:var(--serif-2);font-size:.8rem;letter-spacing:.16em;color:var(--brass)}
.bk-card h3{margin:0}
.bk-card p{margin:0;font-size:.95rem;color:var(--ink-2)}
.bk-onward{
  display:flex;flex-wrap:wrap;gap:1rem;align-items:center;border-top:2px solid var(--oxblood);
  padding-top:.9rem;margin-top:1.6rem;font-size:.96rem
}
.bk-onward span{font-family:var(--serif-2);letter-spacing:.05em;color:var(--brass);
  text-transform:uppercase;font-size:.78rem}
.bk-runhead{
  font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);
  border-bottom:1px solid var(--rule);padding-bottom:.4rem;margin:0 0 1.5rem
}

/* --- colophon --- */
.bk-colophon{background:var(--leaf);border-top:2px solid var(--oxblood);padding:2.4rem 0 1.6rem;
  font-size:.94rem}
.bk-colophon-grid{display:grid;gap:1.6rem}
@media (min-width:56rem){.bk-colophon-grid{grid-template-columns:1.3fr .85fr .85fr}}
.bk-colophon h2{font-size:.8rem;letter-spacing:.15em;text-transform:uppercase;color:var(--brass);
  font-family:var(--serif);margin-bottom:.6rem}
.bk-colophon nav{display:flex;flex-direction:column;gap:.32rem}
.bk-colophon nav a{text-decoration:none;color:var(--ink)}
.bk-colophon nav a:hover{color:var(--oxblood);text-decoration:underline}
.bk-colophon-mark{font-family:var(--serif-2);font-size:1.1rem;display:block;margin-bottom:.4rem}
.bk-colophon p{color:var(--ink-2);margin-bottom:.6rem}
.bk-caveat{border:1px solid var(--rule);background:var(--parchment);padding:1rem 1.1rem;
  margin:1.6rem 0 1rem;font-size:.9rem;color:var(--ink-2)}
.bk-caveat strong{color:var(--oxblood)}
.bk-colophon-base{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center;justify-content:space-between;
  border-top:1px dotted var(--rule);padding-top:.9rem;font-size:.86rem;color:var(--ink-3)}
.bk-inline-button{font:inherit;font-size:.86rem;background:transparent;border:0;border-bottom:1px solid var(--oxblood);
  color:var(--oxblood);cursor:pointer;padding:0}

/* --- gate + storage bar --- */
.bk-gate{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:1.2rem;
  background:rgba(34,30,24,.6);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.bk-gate[hidden]{display:none}
.bk-gate-card{background:var(--leaf);border:1px solid var(--oxblood);border-top:6px solid var(--oxblood);
  max-width:38rem;padding:1.5rem 1.6rem;max-height:88vh;overflow:auto}
.bk-gate-card h2{margin-top:.2rem}
.bk-gate-card p{font-size:.97rem;color:var(--ink-2)}
.bk-storage{position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--leaf);
  border-top:2px solid var(--oxblood);padding:1rem 1.2rem;display:flex;flex-wrap:wrap;gap:1rem;
  align-items:center;justify-content:space-between}
.bk-storage[hidden]{display:none}
.bk-storage p{margin:.3rem 0 0;font-size:.9rem;color:var(--ink-2);max-width:46rem}
.bk-storage-actions{display:flex;flex-wrap:wrap;gap:.7rem;align-items:center}
.bk-btn{font:inherit;font-size:.93rem;background:var(--oxblood);color:#f7ecd6;border:1px solid var(--oxblood-2);
  padding:.5rem 1rem;cursor:pointer}
.bk-btn:hover{background:var(--oxblood-2)}
.bk-btn-quiet{background:transparent;color:var(--oxblood);border-color:var(--rule)}
.bk-btn-quiet:hover{background:var(--parchment-2);color:var(--oxblood-2)}

/* --- meter --- */
.bk-meter{border:1px solid var(--rule);background:var(--leaf);padding:1.2rem 1.25rem;margin:0 0 1.4rem}
.bk-meter-fields{display:grid;gap:.9rem;margin-bottom:1rem}
@media (min-width:40rem){.bk-meter-fields{grid-template-columns:repeat(2,1fr)}}
.bk-meter label{display:flex;flex-direction:column;gap:.3rem;font-size:.93rem;color:var(--ink-2)}
.bk-meter input,.bk-form input:not([type=checkbox]),.bk-form select,.bk-form textarea{
  font:inherit;font-size:1rem;padding:.5rem .6rem;border:1px solid var(--rule);
  background:var(--parchment);color:var(--ink)}
.bk-meter-out{display:grid;gap:.8rem;border-top:1px solid var(--rule);padding-top:.9rem}
@media (min-width:40rem){.bk-meter-out{grid-template-columns:repeat(3,1fr)}}
.bk-meter-out p{margin:0;display:flex;flex-direction:column}
.bk-meter-out span{font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brass)}
.bk-meter-out strong{font-family:var(--serif-2);font-size:1.3rem;color:var(--oxblood-2)}
.bk-meter-error{color:var(--oxblood-2);background:#f4e2d8;border:1px solid var(--oxblood);
  padding:.6rem .8rem;font-size:.92rem;margin:0 0 .9rem}
.bk-meter-note{font-size:.88rem;color:var(--ink-3);margin:.9rem 0 0}

/* --- contact form (shares the meter's field rule and the .bk-btn button) --- */
.bk-form{border:1px solid var(--rule);background:var(--leaf);padding:1.2rem 1.25rem;margin:0 0 1.4rem}
.bk-form-set{border:0;margin:0;padding:0;min-width:0}
.bk-form-legend{font-family:var(--serif-2);font-size:1.12rem;color:var(--oxblood);padding:0;
  margin:0 0 .95rem}
.bk-form-fields{display:grid;gap:.9rem;margin-bottom:1.1rem}
@media (min-width:40rem){
  .bk-form-fields{grid-template-columns:repeat(2,1fr)}
  .bk-form-wide{grid-column:1 / -1}
}
.bk-form-field{display:flex;flex-direction:column;gap:.3rem;margin:0;font-size:.93rem;color:var(--ink-2)}
.bk-form textarea{width:100%;line-height:1.6;resize:vertical}
.bk-form-consent{display:flex;align-items:flex-start;gap:.65rem;margin:0 0 1.1rem;font-size:.93rem;
  color:var(--ink-2)}
.bk-form-consent input[type=checkbox]{flex:none;width:1.05rem;height:1.05rem;margin:.3rem 0 0;
  accent-color:var(--oxblood)}
.bk-form-note{font-size:.88rem;color:var(--ink-3);border-top:1px solid var(--rule);
  padding-top:.85rem;margin:0 0 1.1rem}
.bk-form-actions{margin:0}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important;scroll-behavior:auto !important}
}
@media print{
  .bk-notice,.bk-menu,#bk-nav,.bk-storage,.bk-gate,.bk-rail{display:none}
  body.bk-body{background:#fff}
}