/* ============================================================
   PROJECT LOGBOOK skin — 8/21 final edition
   Loads AFTER style.css: style.css keeps the functional components
   (simulator, message garden, feedback, gallery) alive; this file
   re-themes everything into a field-engineering logbook:
   cream graph paper, ink, stamps, tape, polaroids, terminal green.
   ============================================================ */

:root{
  --lb-paper:#F6F0E1;          /* aged cream */
  --lb-card:#FFFDF4;           /* card paper */
  --lb-ink:#211B12;            /* warm ink */
  --lb-ink-soft:#4A4234;
  --lb-mute:#6B614B;
  --lb-line:#DACFB4;
  --lb-red:#C93A1F;            /* stamp red */
  --lb-leaf:#3E7B27;
  --lb-leaf-deep:#274D19;
  --lb-sun:#DF9A1F;
  --lb-sky:#295E9C;
  --lb-soil:#8A5A2B;
  --lb-grid:rgba(138,90,43,.065);
  --lb-shadow:6px 6px 0 rgba(33,27,18,.16);
  --disp:'Besley','Noto Sans SC',serif;
  --bodyf:'Archivo','Noto Sans SC',system-ui,sans-serif;
  --handf:'Caveat','Noto Sans SC',cursive;
  --monof:'JetBrains Mono',ui-monospace,Menlo,monospace;
}

/* ---------- base re-theme ---------- */
body{
  font-family:var(--bodyf);
  color:var(--lb-ink);
  background:
    linear-gradient(var(--lb-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--lb-grid) 1px, transparent 1px),
    radial-gradient(140% 90% at 50% -20%, #FBF7EA, transparent 60%),
    var(--lb-paper);
  background-size:28px 28px, 28px 28px, auto, auto;
}
h1,h2,h3,h4,footer .big{font-family:var(--disp);}
a{color:var(--lb-sky);}
::selection{background:var(--lb-sun);color:var(--lb-ink);}

.progress{background:linear-gradient(90deg,var(--lb-leaf),var(--lb-sun),var(--lb-red));height:4px;}

/* ---------- shared bits ---------- */
.stamp{display:inline-block;font:800 11px/1 var(--bodyf);letter-spacing:.16em;text-transform:uppercase;
  padding:7px 11px;border:2px solid currentColor;border-radius:4px;transform:rotate(-1.6deg);}
.stamp-red{color:var(--lb-red);background:rgba(201,58,31,.06);}
.stamp-ink{color:var(--lb-ink);background:rgba(33,27,18,.05);transform:rotate(1.2deg);}
.stamp-green{color:#8FD97C;background:rgba(143,217,124,.08);}

.hand{font:700 22px/1.3 var(--handf);color:#6E4A1C;margin-top:6px;}
.hand-inline{font:700 17px var(--handf);color:#6E4A1C;font-style:normal;}
.side-note{font:700 20px var(--handf);color:#5A5140;margin:6px 0 14px;}

.btn{display:inline-flex;align-items:center;gap:8px;font:800 14px var(--bodyf);letter-spacing:.02em;
  padding:13px 20px;border-radius:8px;border:2.5px solid var(--lb-ink);cursor:pointer;
  transition:transform .15s var(--ease),box-shadow .15s var(--ease);text-decoration:none;}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 rgba(33,27,18,.16);}
.btn-ink{background:var(--lb-ink);color:var(--lb-paper);box-shadow:var(--lb-shadow);}
.btn-ink:hover{transform:translate(-1px,-1px);box-shadow:8px 8px 0 rgba(33,27,18,.18);}
.btn-line{background:var(--lb-card);color:var(--lb-ink);box-shadow:var(--lb-shadow);}
.btn-line:hover{transform:translate(-1px,-1px);}

/* tape strips on cards */
.tape{position:relative;}
.tape::before,.tape::after{content:"";position:absolute;width:86px;height:26px;top:-13px;
  background:rgba(223,154,31,.32);border-left:1px dashed rgba(138,90,43,.35);border-right:1px dashed rgba(138,90,43,.35);
  transform:rotate(-3deg);pointer-events:none;}
.tape::before{left:6%;}
.tape::after{right:6%;transform:rotate(2.4deg);}

/* polaroid photo */
.polaroid{background:#fff;border:1px solid var(--lb-line);padding:10px 10px 14px;border-radius:4px;
  box-shadow:var(--lb-shadow);transform:rotate(-.8deg);margin:22px 0;}
.polaroid img{width:100%;height:auto;border-radius:2px;display:block;}
.polaroid figcaption{font:700 19px var(--handf);color:#3F3627;text-align:center;padding-top:9px;}

/* ---------- TOC topbar ---------- */
.toc{position:sticky;top:0;z-index:60;display:flex;align-items:stretch;gap:0;
  background:var(--lb-paper);border-bottom:2.5px solid var(--lb-ink);box-shadow:0 4px 14px rgba(33,27,18,.08);}
.toc::after{content:"\203A";position:absolute;right:0;top:0;bottom:2.5px;width:38px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(90deg,rgba(246,240,225,0),var(--lb-paper) 58%);color:var(--lb-red);
  font:800 20px var(--bodyf);pointer-events:none;transition:opacity .25s;}
.toc.at-end::after{opacity:0;}
.toc-home{display:flex;align-items:center;gap:6px;padding:12px 14px;font:700 13px var(--bodyf);
  color:var(--lb-ink);border-right:2px dashed var(--lb-line);white-space:nowrap;}
.toc-home b{letter-spacing:.14em;}
.toc-rail{display:flex;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;}
.toc-rail::-webkit-scrollbar{display:none;}
.toc-rail a{display:flex;align-items:center;gap:6px;padding:12px 13px;font:600 13px var(--bodyf);
  color:var(--lb-ink-soft);white-space:nowrap;border-bottom:3px solid transparent;}
.toc-rail a i{font:700 11px var(--monof);font-style:normal;color:var(--lb-mute);}
.toc-rail a.on{color:var(--lb-ink);border-bottom-color:var(--lb-red);background:rgba(201,58,31,.05);}
.toc-rail a.on i{color:var(--lb-red);}

/* ---------- COVER ---------- */
.cover{position:relative;padding:44px 22px 56px;
  border-bottom:3px double var(--lb-ink);}
.cover-inner{max-width:var(--maxw);margin:0 auto;}
.cover-topline{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;}
.cover-title{font-size:clamp(36px,9.4vw,68px);font-weight:900;line-height:.98;letter-spacing:-.02em;
  color:var(--lb-ink);text-wrap:balance;}
.cover-title em{font-style:italic;font-weight:600;color:var(--lb-leaf);}
.cover-hand{font:700 clamp(22px,5vw,30px)/1.25 var(--handf);color:var(--lb-red);margin:14px 0 6px;transform:rotate(-1deg);}
.cover-photo{max-width:560px;transform:rotate(1.1deg);}

.cover-form{margin:26px 0 0;border-top:2px dashed var(--lb-line);}
.cover-form > div{display:grid;grid-template-columns:clamp(118px,34vw,168px) 1fr;gap:14px;padding:11px 2px;border-bottom:2px dashed var(--lb-line);align-items:baseline;}
.cover-form dt{font:800 11px var(--bodyf);letter-spacing:.14em;text-transform:uppercase;color:var(--lb-mute);}
.cover-form dd{font:600 16px var(--bodyf);color:var(--lb-ink);}
.cover-form dd.dq{font:700 20px var(--disp);font-style:italic;color:var(--lb-sky);}

.contents{margin-top:34px;background:var(--lb-card);border:2.5px solid var(--lb-ink);border-radius:10px;
  padding:22px 22px 24px;box-shadow:var(--lb-shadow);}
.contents-head{font:800 12px var(--bodyf);letter-spacing:.2em;text-transform:uppercase;color:var(--lb-red);margin-bottom:10px;}
.contents ol{list-style:none;}
.contents li a{display:flex;align-items:baseline;gap:10px;padding:11px 2px;color:var(--lb-ink);
  border-bottom:1px solid transparent;}
.contents li a:hover .t{color:var(--lb-red);}
.contents .t{font:700 clamp(16px,4vw,19px) var(--disp);}
.contents .dots{flex:1;border-bottom:2px dotted var(--lb-line);transform:translateY(-4px);}
.contents .n{font:700 14px var(--monof);color:var(--lb-mute);}
.cover-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px;}

/* ---------- chapters ---------- */
section.chapter{padding:70px 22px 76px;position:relative;}
section.chapter.alt{background:rgba(223,154,31,.05);}
section.chapter + section.chapter::before{content:"";position:absolute;left:0;right:0;top:0;height:0;
  border-top:2px dashed var(--lb-line);}

.log-head{position:relative;margin-bottom:26px;padding-top:8px;}
.log-num{position:absolute;right:-8px;top:-34px;font:900 italic clamp(96px,22vw,150px)/1 var(--disp);
  color:transparent;-webkit-text-stroke:2px rgba(138,90,43,.22);pointer-events:none;user-select:none;}
.chapter .title{font-size:clamp(30px,7vw,42px);font-weight:900;line-height:1.04;letter-spacing:-.015em;
  margin:14px 0 0;color:var(--lb-ink);}
.subhead{font:700 clamp(19px,4.6vw,23px) var(--disp);margin:34px 0 12px;color:var(--lb-ink);}
.chapter .lead{font-size:16.5px;color:var(--lb-ink-soft);line-height:1.65;}
.chapter .lead b{color:var(--lb-ink);}

/* ---------- CH01 quotes + stats ---------- */
.quotes{display:grid;gap:20px;margin:18px 0 8px;}
.qcard{background:var(--lb-card);border:1.5px solid var(--lb-line);
  border-radius:6px;padding:20px 22px 16px;box-shadow:var(--lb-shadow);transform:rotate(-.4deg);}
.qcard:nth-child(2){transform:rotate(.5deg);}
.qcard:nth-child(3){transform:rotate(-.6deg);}
.qcard:nth-child(1) footer{color:var(--lb-leaf);}
.qcard:nth-child(2) footer{color:#9A6A08;}
.qcard:nth-child(3) footer{color:var(--lb-sky);}
.qcard .q-bm{font:600 italic 15.5px/1.5 var(--bodyf);color:var(--lb-ink-soft);}
.qcard .q-en{font:700 17.5px/1.4 var(--disp);color:var(--lb-ink);margin-top:8px;}
.qcard footer{font:700 18px var(--handf);color:var(--lb-mute);margin-top:8px;background:none;padding:0;text-align:left;}

.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px;}
.stat{background:var(--lb-card);border:2px solid var(--lb-ink);border-radius:8px;padding:17px 17px 15px;box-shadow:var(--lb-shadow);}
.stat .num{font:900 clamp(20px,4.6vw,28px) var(--disp);color:var(--lb-leaf);}
.stat .num small{font:700 14px var(--bodyf);color:var(--lb-mute);}
.stat:nth-child(2) .num{color:var(--lb-soil);}
.stat .lbl{font:500 12.5px/1.4 var(--bodyf);color:var(--lb-ink-soft);margin-top:5px;}
.stat.todo{border-style:dashed;background:repeating-linear-gradient(-45deg,var(--lb-card),var(--lb-card) 12px,rgba(223,154,31,.07) 12px,rgba(223,154,31,.07) 24px);}
.stat.todo .num{color:var(--lb-sun);}

.photo-ph.wide{margin:22px 0;}

/* ---------- CH02 ideal + gallery ---------- */
.ideal{display:grid;gap:16px;margin-top:10px;}
.istep{background:var(--lb-card);border:1.5px solid var(--lb-line);border-radius:8px;box-shadow:var(--lb-shadow);
  padding:18px 20px;gap:16px;align-items:center;}
.istep .body{min-width:0;}
.istep .edt{font-family:var(--monof);}
.gallery{margin-top:6px;gap:20px;}
.gcard{background:#fff;border:1px solid var(--lb-line);box-shadow:var(--lb-shadow);border-radius:4px;transform:rotate(-.7deg);
  padding:9px 9px 11px;}
.gcard .gimg{border-radius:2px;overflow:hidden;}
.gcard:nth-child(2n){transform:rotate(.7deg);}
.gcard figcaption{font:700 17px var(--handf);color:#3F3627;margin-top:8px;padding:0 3px;}
.video-frame{border:2.5px solid var(--lb-ink);box-shadow:var(--lb-shadow);}

/* ---------- CH03 machines ---------- */
.machines{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:stretch;margin-top:8px;}
.mcard{background:var(--lb-card);border:2px solid var(--lb-ink);border-radius:8px;padding:17px;box-shadow:var(--lb-shadow);}
.mcard img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px;border:1px solid var(--lb-line);}
.mcard h3{font-size:19px;margin-top:10px;}
.mcard p{font:400 13.5px/1.5 var(--bodyf);color:var(--lb-ink-soft);margin-top:6px;}
.mcard p b{color:var(--lb-ink);}
.mtag{display:inline-block;font:800 11px var(--bodyf);letter-spacing:.14em;border-radius:4px;
  padding:5px 9px;margin-bottom:10px;transform:rotate(-1.4deg);}
.mtag.v1{background:rgba(223,154,31,.18);color:var(--lb-soil);border:1.5px solid var(--lb-soil);}
.mtag.v2{background:rgba(62,123,39,.14);color:var(--lb-leaf-deep);border:1.5px solid var(--lb-leaf);}
.mcard-arrow{display:flex;align-items:center;font:900 30px var(--disp);color:var(--lb-red);}

.fixtable{width:100%;border-collapse:collapse;background:var(--lb-card);border:2px solid var(--lb-ink);
  box-shadow:var(--lb-shadow);border-radius:8px;overflow:hidden;font-size:14px;}
.fixtable th{font:800 11.5px var(--bodyf);letter-spacing:.1em;text-transform:uppercase;text-align:left;
  padding:11px 14px;border-bottom:2px solid var(--lb-ink);}
.fixtable th:first-child{color:var(--lb-soil);background:rgba(223,154,31,.10);}
.fixtable th:last-child{color:var(--lb-leaf-deep);background:rgba(62,123,39,.09);}
.fixtable td{padding:13px 16px;border-bottom:1.5px dashed var(--lb-line);color:var(--lb-ink-soft);line-height:1.45;vertical-align:top;}
.fixtable td:first-child{background:rgba(223,154,31,.05);width:46%;}
.fixtable td:last-child{background:rgba(62,123,39,.04);}
.fixtable td b{color:var(--lb-ink);}
.fixtable tr:last-child td{border-bottom:none;}

.flowchain{margin-top:8px;display:grid;gap:18px;}
@media(min-width:680px){.flowchain{grid-template-columns:1fr 1fr;align-items:stretch;}}
.circuit{background:var(--lb-card);border:2px solid var(--lb-ink);border-radius:10px;padding:16px 16px 14px;box-shadow:var(--lb-shadow);
  display:flex;flex-direction:column;}
.circuit .fnode:last-child{margin-bottom:0;}
@media(min-width:680px){.circuit{justify-content:space-between;}}
.circuit h4{display:flex;align-items:center;gap:9px;font:700 16.5px var(--disp);color:var(--lb-ink);margin-bottom:12px;}
.cbadge{font:800 10.5px var(--bodyf);letter-spacing:.13em;padding:4px 8px;border-radius:4px;transform:rotate(-1.4deg);}
.ca .cbadge{background:rgba(41,94,156,.10);color:var(--lb-sky);border:1.5px solid var(--lb-sky);}
.cb .cbadge{background:rgba(223,154,31,.15);color:#8A5A0E;border:1.5px solid var(--lb-sun);}
.circuit .fnode{background:transparent;border:none;box-shadow:none;padding:8px 2px;}
.circuit .farrow{margin:0;color:var(--lb-leaf);align-self:center;text-align:center;}
@media(min-width:760px){.circuit .farrow{font-size:0;}.circuit .farrow::after{content:"\2193";font-size:18px;}}
.handshake{margin-top:16px;background:var(--lb-card);border:2px dashed var(--lb-ink);border-radius:8px;
  padding:13px 16px;font:400 14.5px/1.55 var(--bodyf);color:var(--lb-ink-soft);}
.handshake b{color:var(--lb-ink);}
.fnode{background:var(--lb-card);border:1.5px solid var(--lb-line);box-shadow:var(--lb-shadow);}
.note-solar{margin-top:18px;font-size:15px;background:var(--lb-card);border:2px dashed var(--lb-sun);
  border-radius:8px;padding:14px 16px;}

/* ---------- CH04 dark terminal chapter ---------- */
section.chapter.dark{background:#161B12;color:#E9E4D2;
  background-image:
    linear-gradient(rgba(143,217,124,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143,217,124,.05) 1px, transparent 1px);
  background-size:28px 28px;}
.dark .title{color:#F3EFDD;}
.dark .hand{color:#CFC5A2;}
.dark .lead{color:#C9C2A8;}
.dark .lead b{color:#F3EFDD;}
.dark .subhead{color:#F3EFDD;}
.dark .log-num{-webkit-text-stroke:2px rgba(143,217,124,.20);}

.codetabs{margin-top:18px;background:#0D110B;border:2px solid #8FD97C;border-radius:10px;
  box-shadow:6px 6px 0 rgba(0,0,0,.35);overflow:hidden;}
.ct-rail{display:flex;border-bottom:2px solid rgba(143,217,124,.4);}
.ct-rail button{flex:1;font:700 14px var(--monof);padding:12px 0;background:transparent;color:#9BB08A;
  border:none;border-right:1px solid rgba(143,217,124,.18);cursor:pointer;}
.ct-rail button:last-child{border-right:none;}
.ct-rail button[aria-selected="true"]{background:#8FD97C;color:#0D110B;}
.ct-panel{padding:18px 18px 20px;}
.ct-panel h3{font:700 20px var(--disp);color:#F3EFDD;margin-bottom:10px;}
.ct-panel p{font:400 14.5px/1.6 var(--bodyf);color:#C9C2A8;margin-top:12px;}
.ct-panel p b{color:#F3EFDD;}
pre.term{background:#050704;border:1px solid rgba(143,217,124,.35);border-radius:6px;padding:14px 16px;
  overflow-x:auto;font:500 13px/1.7 var(--monof);color:#8FD97C;}
pre.term .c{color:#8A9B7D;}
pre.term .g{color:#C9F2B8;}
pre.term .r{color:#F2A197;}

.codegrid{display:grid;gap:22px;margin-top:28px;align-items:stretch;}
.databox{display:flex;flex-direction:column;}
.databox .bars{flex:1;display:flex;flex-direction:column;justify-content:space-evenly;}
.dark-frame{background:#0D110B;border-color:rgba(143,217,124,.35);transform:rotate(.6deg);}
.dark-frame figcaption{color:#B9AF8E;}
.databox{background:#0D110B;border:1px solid rgba(143,217,124,.35);border-radius:10px;padding:18px;}
.databox .subhead{margin-top:0;}
.dark .bar-row .lab{color:#C9C2A8;}
.dark .bar-row .num{color:#F3EFDD;}
.dark .bar-track{background:rgba(143,217,124,.12);}
.dark .thr-note{color:#C9C2A8;font-size:13.5px;margin-top:12px;}
.dark .thr-note b{color:#F3EFDD;}

/* ---------- CH05 dskp ---------- */
.dskp{display:grid;gap:14px;margin-top:16px;}
.subj-d{background:var(--lb-card);border:2px solid var(--lb-ink);border-radius:8px;box-shadow:var(--lb-shadow);overflow:hidden;}
.subj-d summary{display:flex;align-items:center;gap:13px;padding:16px 18px;cursor:pointer;list-style:none;}
.subj-d summary::-webkit-details-marker{display:none;}
.schip{flex:none;font:800 13px var(--bodyf);letter-spacing:.03em;border-radius:99px;padding:7px 13px;min-width:92px;text-align:center;}
.subj-d.stem .schip{background:rgba(62,123,39,.14);color:var(--lb-leaf-deep);border:2px solid var(--lb-leaf);}
.subj-d.non .schip{background:rgba(41,94,156,.10);color:var(--lb-sky);border:2px solid var(--lb-sky);}
.sline{font:500 13.5px/1.4 var(--bodyf);color:var(--lb-ink-soft);flex:1;}
.subj-d .arr{font:700 15px var(--bodyf);color:var(--lb-mute);transition:transform .2s;}
.subj-d[open] .arr{transform:rotate(180deg);}
.subj-d ul{list-style:none;border-top:2px dashed var(--lb-line);padding:14px 18px 16px;}
.subj-d li{font:400 13.5px/1.55 var(--bodyf);color:var(--lb-ink-soft);padding:6px 0;border-bottom:1px dotted var(--lb-line);}
.subj-d li:last-child{border-bottom:none;}
.subj-d li b{font-family:var(--monof);font-size:12.5px;color:var(--lb-red);margin-right:6px;}
.d-note{font:700 17px var(--handf);color:#5A5140;padding:0 18px 14px;}

/* ---------- CH06 ledger ---------- */
.ledger{background:var(--lb-card);border:2px solid var(--lb-ink);border-radius:8px;box-shadow:var(--lb-shadow);
  margin-top:18px;overflow:hidden;}
.ledger-head{display:flex;justify-content:space-between;font:800 11px var(--bodyf);letter-spacing:.16em;
  text-transform:uppercase;color:var(--lb-mute);padding:12px 18px 8px;border-bottom:2px solid var(--lb-ink);}
.ledger .cost-list{list-style:none;margin:0;padding:4px 18px;}
.ledger .cost-list li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  padding:9px 0;border-bottom:1.5px dashed var(--lb-line);font-size:15px;color:var(--lb-ink-soft);}
.ledger .cost-list li b{font-family:var(--monof);font-weight:700;color:var(--lb-ink);}
.ledger .cost-list li.free-row span,.ledger .cost-list li.free-row b{color:var(--lb-leaf);}
.ledger-total{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:13px 18px;}
.ledger-total span{display:flex;flex-direction:column;}
.fund-note{font:700 16px var(--handf);color:#E4DCC4;font-style:normal;letter-spacing:0;text-transform:none;}
.ledger-total b{white-space:nowrap;}
.ledger-total{background:var(--lb-ink);color:var(--lb-paper);font:700 13px var(--bodyf);letter-spacing:.05em;}
.ledger-total b{font:900 22px var(--disp);color:#F2C94C;}

.cost-cols{display:grid;gap:20px;margin-top:26px;}
.ccol{background:var(--lb-card);border:1.5px solid var(--lb-line);border-radius:8px;
  box-shadow:var(--lb-shadow);padding:18px 20px 16px;}
.ccol .subhead{margin-top:0;}
.ticks{list-style:none;}
.ticks li{position:relative;padding:7px 0 7px 26px;font:400 14.5px/1.5 var(--bodyf);color:var(--lb-ink-soft);
  border-bottom:1px dotted var(--lb-line);}
.ticks li::before{content:"✓";position:absolute;left:2px;font-weight:800;color:var(--lb-leaf);}

.eco-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px;}
.eco-card{background:var(--lb-card);border:1.5px solid var(--lb-line);border-radius:8px;box-shadow:var(--lb-shadow);}

/* ---------- CH07 sim + quiz ---------- */
.sim{border:2.5px solid var(--lb-ink);box-shadow:var(--lb-shadow);background:var(--lb-card);color:var(--lb-ink);}
.sim h3{color:var(--lb-ink);font-family:var(--disp);font-size:22px;}
.sim .hint{color:var(--lb-ink-soft);font-size:14px;}
.readout .lab{color:var(--lb-mute);}
.readout .val{color:var(--lb-ink);}
.sim .sim-ends span,.sim .track-marks .m,.sim .challenge-msg{color:var(--lb-ink-soft);}
.sim-explain{background:rgba(138,90,43,.08);border:1.5px solid var(--lb-line);color:var(--lb-ink-soft);font-size:14.5px;}
.sim-explain b{color:var(--lb-ink);}
.quizcta{margin-top:34px;background:var(--lb-card);border:2.5px solid var(--lb-ink);border-radius:10px;
  padding:26px 24px;box-shadow:var(--lb-shadow);text-align:left;color:var(--lb-ink);}
.quizcta::after{display:none;}
.quizcta .qc-title{color:var(--lb-ink);}
.quizcta p{max-width:none;margin:0 0 16px;color:var(--lb-ink-soft);}
.quizcta .eyebrow{font:800 11px var(--bodyf);letter-spacing:.18em;text-transform:uppercase;color:var(--lb-red);}
.quizcta .qc-title{font:900 28px var(--disp);margin:8px 0 8px;}
.quizcta p{font:400 15px/1.55 var(--bodyf);color:var(--lb-ink-soft);margin-bottom:16px;}

/* ---------- CH08 feedback + team ---------- */
.card{background:var(--lb-card);border:1.5px solid var(--lb-line);box-shadow:var(--lb-shadow);}
.fb-book,.fb-react,.fb-rate,.fb-visits{border:2px solid var(--lb-ink);}
.team-card{background:var(--lb-card);border:1.5px solid var(--lb-line);box-shadow:var(--lb-shadow);}

footer{background:var(--lb-ink);color:var(--lb-paper);}
footer .big{color:#F2C94C;}

/* ---------- judge tour ---------- */
.tour{position:fixed;inset:auto 14px 14px 14px;z-index:80;display:flex;justify-content:center;pointer-events:none;}
.tour[hidden]{display:none;}
.tour-card{pointer-events:auto;max-width:520px;width:100%;background:var(--lb-ink);color:var(--lb-paper);
  border:2px solid var(--lb-sun);border-radius:12px;padding:16px 18px;box-shadow:0 18px 44px rgba(0,0,0,.35);}
.tour-step{font:700 11px var(--monof);letter-spacing:.14em;text-transform:uppercase;color:#F2C94C;}
.tour-text{font:600 16px/1.45 var(--bodyf);margin:7px 0 12px;}
.tour-row{display:flex;justify-content:flex-end;gap:10px;}
.tour-row .btn{padding:9px 14px;font-size:13px;}
.tour-row .btn-line{background:transparent;color:var(--lb-paper);border-color:var(--lb-paper);box-shadow:none;}
.tour-row .btn-ink{background:var(--lb-sun);border-color:var(--lb-sun);color:var(--lb-ink);box-shadow:none;}

/* ---------- reveal (final.js adds its own observer) ---------- */
.lb-reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.lb-reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){.lb-reveal{opacity:1;transform:none;transition:none;}}

/* ---------- responsive ---------- */
@media (min-width:680px){
  .quotes{grid-template-columns:repeat(3,1fr);}
  .codegrid{grid-template-columns:1fr 1fr;align-items:start;}
  .cost-cols{grid-template-columns:1fr 1fr;}
  .eco-grid{grid-template-columns:repeat(4,1fr);}
}
@media (max-width:679px){
  .machines{grid-template-columns:1fr;}
  .mcard-arrow{transform:rotate(90deg);justify-content:center;}
  .stat-strip{grid-template-columns:1fr;}
  .fixtable{font-size:13px;}
  .fixtable td:first-child{width:auto;}
  .log-num{right:-2px;top:-24px;}
  .cover-form dt{min-width:96px;}
}

/* ---------- a11y: skip link + focus states ---------- */
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--lb-ink);color:var(--lb-paper);
  padding:12px 18px;font:800 14px var(--bodyf);border-radius:0 0 8px 0;}
.skip:focus{left:0;}
.btn:focus-visible,.toc-rail a:focus-visible,.toc-home:focus-visible,.contents li a:focus-visible,
.ct-rail button:focus-visible,.subj-d summary:focus-visible,.quizcta a:focus-visible{
  outline:3px solid var(--lb-sky);outline-offset:2px;border-radius:6px;}

/* ---------- desktop cover: two-column logbook spread ---------- */
@media(min-width:960px){
  .cover{padding:56px 40px 64px;}
  .cover-inner{max-width:1060px;display:grid;grid-template-columns:1.04fr .96fr;column-gap:60px;}
  .cover-topline{grid-column:1 / -1;}
  .cover-title{grid-column:1;grid-row:2;align-self:end;}
  .cover-hand{grid-column:1;grid-row:3;}
  .cover-form{grid-column:1;grid-row:4;align-self:start;margin-top:30px;}
  .cover-photo{grid-column:2;grid-row:2 / 5;align-self:center;margin:0;max-width:none;}
  .contents{grid-column:1 / -1;grid-row:5;margin-top:44px;}
}

@media(min-width:760px){.ideal{align-items:stretch;}}