/* logbook: inline style 1 */
:root{
  --bg:#000;
  --panel:#070707;
  --line:#1f1f1f;
  --line2:#303030;
  --fg:#fff;
  --muted:#a0a0a0;
  --dim:#6b6b6b;
  --red:#d7192d;
  --red2:#ff2338;
  --mono:'Geist Mono',ui-monospace,monospace;
  --sans:'Archivo',ui-sans-serif,system-ui,sans-serif;
  --brand:'Orbitron',var(--sans);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#000}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 72% 16%, rgba(215,25,45,.07), transparent 58%),
    radial-gradient(720px 420px at 18% 80%, rgba(255,255,255,.035), transparent 62%),
    #000;
  color:var(--fg);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  cursor:none;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    repeating-linear-gradient(180deg, rgba(255,255,255,.055) 0 1px, transparent 1px 5px),
    radial-gradient(circle at 22% 18%, rgba(255,255,255,.72) 0 1px, transparent 1.5px),
    radial-gradient(circle at 74% 24%, rgba(255,255,255,.54) 0 1px, transparent 1.5px),
    radial-gradient(circle at 58% 62%, rgba(215,25,45,.9) 0 1.3px, transparent 2px),
    radial-gradient(circle at 88% 72%, rgba(255,255,255,.45) 0 1px, transparent 1.6px);
  opacity:.16;
  z-index:-1;
}
a{color:inherit;text-decoration:none;cursor:none}
@media (hover:hover) and (pointer:fine){
  body,body *,body *::before,body *::after{cursor:none!important}
}
.mono{font-family:var(--mono)}
.wrap{width:min(1180px,calc(100% - 48px));margin:0 auto}
.topbar{
  position:fixed;
  inset:0 0 auto 0;
  height:58px;
  z-index:20;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  padding:0 24px;
  border-bottom:1px solid rgba(255,255,255,.09);
  background:rgba(0,0,0,.72);
  backdrop-filter:blur(16px);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
}
.mark{display:flex;align-items:center;gap:11px;color:#fff}
.mark::before{content:"";width:7px;height:7px;background:var(--red);box-shadow:0 0 18px rgba(215,25,45,.7)}
.topbar .center{color:var(--dim)}
.topbar .right{display:flex;justify-content:flex-end;gap:26px;color:var(--muted)}
.topbar a:hover{color:#fff}
.spine{
  position:fixed;
  left:50%;
  top:0;
  bottom:0;
  width:1px;
  background:linear-gradient(to bottom,transparent 0%,rgba(255,255,255,.08) 14%,rgba(255,255,255,.13) 46%,rgba(215,25,45,.22) 50%,rgba(255,255,255,.09) 86%,transparent 100%);
  opacity:.82;
  z-index:0;
  pointer-events:none;
  transition:opacity .3s ease;
}
.spine-marker{
  position:fixed;
  left:50%;
  width:4px;
  height:4px;
  margin-left:-2px;
  border-radius:50%;
  background:rgba(255,255,255,.86);
  z-index:2;
  pointer-events:none;
  box-shadow:0 0 10px rgba(255,255,255,.55),0 0 22px rgba(215,25,45,.22);
}
.spine-marker::before{content:"";position:absolute;top:-22px;left:50%;width:1px;height:22px;background:linear-gradient(to bottom,transparent,rgba(255,255,255,.62));transform:translateX(-50%)}
.spine-dots{position:fixed;left:50%;top:0;bottom:0;width:24px;transform:translateX(-12px);z-index:3;pointer-events:none}
.spine-dot{
  position:absolute;
  left:50%;
  width:9px;
  height:9px;
  margin-left:-4.5px;
  background:#000;
  border:1px solid rgba(255,255,255,.24);
  pointer-events:auto;
  transition:transform .25s ease,border-color .25s ease,background .25s ease,box-shadow .25s ease,opacity .2s ease;
}
.spine-dot:hover,.spine-dot.active{background:var(--red);border-color:var(--red);transform:scale(1.14);box-shadow:0 0 0 4px rgba(215,25,45,.07),0 0 22px rgba(215,25,45,.42)}
.spine-dot::after{
  content:"";
  position:absolute;
  inset:-1px;
  border:1px solid var(--red);
  opacity:0;
  pointer-events:none;
}
.spine-dot.pulse{animation:dotLock .62s cubic-bezier(.2,.8,.2,1)}
.spine-dot.pulse::after{animation:dotRing .85s ease-out}
@keyframes dotLock{0%{transform:scale(1)}35%{transform:scale(1.72)}60%{transform:scale(.92)}100%{transform:scale(1.14)}}
@keyframes dotRing{0%{opacity:.8;transform:scale(1)}100%{opacity:0;transform:scale(5.2)}}
.spine-dot .label{
  position:absolute;
  bottom:calc(100% + 9px);
  left:50%;
  transform:translateX(-50%);
  padding:4px 8px;
  border:1px solid var(--line);
  background:rgba(0,0,0,.86);
  font-family:var(--mono);
  font-size:9px;
  letter-spacing:.22em;
  white-space:nowrap;
  color:var(--muted);
  opacity:0;
  pointer-events:none;
}
.spine-dot:hover .label,.spine-dot:focus-visible .label{opacity:1}
.hero{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:120px 0 90px;
  position:relative;
  z-index:1;
}
.kicker,.chapter-meta,.visual-cap,.scroll-cue{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--muted);
}
.kicker{display:flex;gap:14px;align-items:center}
.kicker::before,.chapter-meta::before{content:"";width:7px;height:7px;background:var(--red);box-shadow:0 0 18px rgba(215,25,45,.65);flex:none}
h1{
  position:relative;
  z-index:4;
  width:max-content;
  max-width:100%;
  margin:28px 0 0;
  margin-left:-18px;
  padding:10px 18px 12px;
  background:linear-gradient(90deg,#000 0%,#000 78%,rgba(0,0,0,.92) 90%,transparent 100%);
  font-family:var(--brand);
  font-size:clamp(54px,10vw,150px);
  line-height:.86;
  letter-spacing:-.045em;
  text-transform:uppercase;
}
h1 span{display:block;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.56)}
.lede{
  margin:34px 0 0;
  max-width:720px;
  color:var(--muted);
  font-size:18px;
  line-height:1.75;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.chapter-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--line2);
  padding:13px 18px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.chapter-link:hover{border-color:var(--red);background:rgba(215,25,45,.08);color:#fff}
.chapter-body .chapter-link{margin-top:30px}
.scroll-cue{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);color:var(--dim)}
.chapter{
  position:relative;
  min-height:100vh;
  padding:120px 0;
  display:flex;
  align-items:center;
  z-index:1;
}
.chapter-grid{display:grid;grid-template-columns:1fr 1fr;gap:86px;align-items:center;width:100%}
.chapter:nth-child(even) .chapter-grid{direction:rtl}
.chapter:nth-child(even) .chapter-grid>*{direction:ltr}
.chapter-meta{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.chapter-meta .num{color:#fff}
.chapter-meta .date{margin-left:auto;color:var(--dim)}
.chapter-title{
  margin:0;
  font-family:var(--mono);
  font-size:clamp(40px,5.2vw,78px);
  line-height:1.02;
  letter-spacing:-.035em;
  max-width:12ch;
}
.chapter-title em{display:block;margin-top:12px;color:var(--dim);font-style:normal;font-size:.28em;letter-spacing:.22em;text-transform:uppercase;line-height:1.5}
.chapter-body{max-width:560px;margin-top:28px;color:var(--muted);font-size:17px;line-height:1.75}
.chapter-body p{margin:0}
.chapter-body p+p{margin-top:20px}
.chapter-body b{color:#fff;font-weight:500}
.chapter-visual{
  position:relative;
  width:100%;
  max-width:470px;
  aspect-ratio:1;
  justify-self:center;
  border:1px solid var(--line);
  background:
    radial-gradient(60% 60% at 50% 45%, rgba(215,25,45,.10), transparent 62%),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,.03) 1px, transparent 1px),
    rgba(7,7,7,.82);
  background-size:auto,28px 28px,28px 28px,auto;
  overflow:hidden;
  box-shadow:inset 0 0 60px rgba(255,255,255,.025);
}
.chapter-visual::before{
  content:"";
  position:absolute;
  inset:18px;
  border:1px solid rgba(255,255,255,.08);
  pointer-events:none;
}
.chapter-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(180deg, rgba(255,255,255,.06) 0 1px, transparent 1px 5px);
  opacity:.14;
  pointer-events:none;
}
.ghost-frame::after{
  content:"";
  position:absolute;
  right:18px;
  top:18px;
  width:58px;
  height:6px;
  border:1px solid rgba(255,255,255,.12);
  background:
    linear-gradient(var(--red) 0 0) 1px 1px / var(--state, 52%) calc(100% - 2px) no-repeat,
    rgba(0,0,0,.72);
  box-shadow:0 0 16px -8px rgba(215,25,45,.85);
}
.chapter[data-ch="0"] .ghost-frame::after{--state:calc(100% - 2px)}
.chapter[data-ch="1"] .ghost-frame::after{--state:58%;animation:statePulse 4.8s ease-in-out infinite}
.chapter[data-ch="2"] .ghost-frame::after{--state:42%;animation:statePulse 5.2s ease-in-out infinite}
.chapter[data-ch="3"] .ghost-frame::after{--state:34%;animation:statePulse 5.6s ease-in-out infinite}
.chapter[data-ch="4"] .ghost-frame::after{--state:24%;opacity:.62}
.visual-cap{
  position:absolute;
  left:18px;
  right:18px;
  bottom:16px;
  display:flex;
  justify-content:space-between;
  gap:20px;
  font-size:9px;
  color:var(--dim);
}
.ghost-frame{position:absolute;inset:44px;border:1px solid rgba(215,25,45,.42);box-shadow:0 0 44px -28px rgba(215,25,45,.9)}
.visual-list{
  position:absolute;
  left:72px;
  top:72px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.24em;
  line-height:2.15;
  color:rgba(255,255,255,.5);
}
.visual-list.git-list{
  left:68px;
  top:66px;
  right:68px;
  line-height:1.9;
}
.visual-list.git-list span{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:8px 0;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.visual-list.git-list span::after{
  content:attr(data-state);
  color:rgba(215,25,45,.78);
  font-size:9px;
  letter-spacing:.18em;
}
.visual-bars{
  position:absolute;
  left:70px;
  right:70px;
  bottom:88px;
  height:70px;
  border:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(90deg, transparent 0 9%, rgba(215,25,45,.46) 9% 11%, transparent 11% 31%, rgba(255,255,255,.18) 31% 32%, transparent 32% 54%, rgba(215,25,45,.54) 54% 58%, transparent 58% 78%, rgba(255,255,255,.18) 78% 79%, transparent 79%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.08) 0 1px, transparent 1px 14px);
  animation:barsDrift 4.8s ease-in-out infinite;
}
.visual-pad{
  position:absolute;
  inset:86px 88px 110px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
}
.visual-pad i{border:1px solid rgba(255,255,255,.11);background:rgba(255,255,255,.018)}
.visual-pad i:nth-child(2),.visual-pad i:nth-child(5),.visual-pad i:nth-child(11),.visual-pad i:nth-child(16){border-color:rgba(215,25,45,.8);background:rgba(215,25,45,.10);box-shadow:0 0 22px -8px rgba(215,25,45,.8);animation:padPulse 3.6s ease-in-out infinite}
.visual-pad i:nth-child(5){animation-delay:.45s}
.visual-pad i:nth-child(11){animation-delay:.9s}
.visual-pad i:nth-child(16){animation-delay:1.35s}
.visual-tube{
  position:absolute;
  left:50%;
  top:50%;
  width:35%;
  height:58%;
  transform:translate(-50%,-52%);
  border:1px solid rgba(255,255,255,.22);
  border-radius:80px 80px 28px 28px;
  background:radial-gradient(ellipse at 50% 78%, rgba(215,25,45,.62), transparent 42%),linear-gradient(180deg, rgba(255,255,255,.14), transparent 42%);
  box-shadow:0 0 42px -16px rgba(215,25,45,.75),inset 0 0 40px rgba(255,255,255,.06);
  animation:tubeBreathe 4.8s ease-in-out infinite;
}
.visual-wave{
  position:absolute;
  left:56px;
  right:56px;
  top:43%;
  height:112px;
  background:linear-gradient(180deg, rgba(215,25,45,.6), rgba(215,25,45,.08)),repeating-linear-gradient(90deg, rgba(255,255,255,.08) 0 1px, transparent 1px 22px);
  clip-path:polygon(0 56%,10% 50%,17% 55%,24% 34%,32% 52%,40% 30%,49% 58%,58% 38%,68% 54%,78% 32%,88% 48%,100% 42%,100% 100%,0 100%);
  animation:waveShape 4.6s ease-in-out infinite;
}
.visual-orbit{
  position:absolute;
  left:50%;
  top:50%;
  width:48%;
  aspect-ratio:1;
  transform:translate(-50%,-50%);
}
.visual-orbit i{position:absolute;inset:10%;border:1px solid rgba(215,25,45,.62);border-radius:50%;transform:rotate(var(--r)) scaleX(1.8);animation:orbitSpin var(--d,16s) linear infinite}
.visual-orbit i:nth-child(1){--r:22deg;--d:17s}.visual-orbit i:nth-child(2){--r:90deg;--d:21s;animation-direction:reverse}.visual-orbit i:nth-child(3){--r:148deg;--d:25s}
.visual-orbit::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:12px;background:#fff;transform:translate(-50%,-50%);box-shadow:0 0 18px rgba(255,255,255,.55);animation:corePulse 3.8s ease-in-out infinite}
.visual-hardware{
  position:absolute;
  inset:78px 64px 98px;
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg, transparent 0 22%, rgba(215,25,45,.22) 22% 24%, transparent 24%),repeating-linear-gradient(0deg, rgba(255,255,255,.09) 0 1px, transparent 1px 34px);
  animation:hardwareScan 5.8s ease-in-out infinite;
}
.visual-hardware::after{
  content:"JV / MIDI\A PATCH MAP\A CONTROL";
  white-space:pre;
  position:absolute;
  right:18px;
  top:42px;
  font-family:var(--mono);
  font-size:10px;
  line-height:2.1;
  letter-spacing:.24em;
  color:rgba(255,255,255,.48);
  text-align:right;
}
.chapter-visual.is-activated::after{animation:visualClickFlash .58s ease-out}
.chapter-visual.is-activated .visual-pad{animation:visualPadKick .58s cubic-bezier(.2,.8,.2,1)}
.visual-pad i.is-hit{border-color:rgba(215,25,45,.95);animation:visualPadHit .62s cubic-bezier(.2,.8,.2,1)}
.chapter-visual.is-activated .visual-tube{animation:visualTubeKick .64s ease-out}
.chapter-visual.is-activated .visual-wave{animation:visualWaveSnap .62s ease-out}
.chapter-visual.is-activated .visual-orbit{animation:visualOrbitKick .66s ease-out}
.chapter-visual.is-activated .visual-orbit i{animation:visualOrbitRingHit .68s ease-out}
.chapter-visual.is-activated .visual-bars{animation:visualBarsKick .58s ease-out}
.chapter-visual.is-activated .visual-list.git-list span{animation:visualGitLine .62s ease-out}
.chapter-visual.is-activated .visual-list.git-list span:nth-child(2){animation-delay:.05s}
.chapter-visual.is-activated .visual-list.git-list span:nth-child(3){animation-delay:.1s}
.chapter-visual.is-activated .visual-hardware{animation:visualHardwareKick .62s ease-out}
footer{padding:120px 0 70px;border-top:1px solid var(--line);position:relative;z-index:2}
.quote{font-family:var(--mono);font-size:clamp(24px,4vw,54px);line-height:1.05;letter-spacing:-.04em;max-width:680px}
.footer-row{margin-top:40px;display:flex;flex-wrap:wrap;gap:24px;font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.footer-row a:hover{color:#fff}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .75s ease,transform .75s ease}
.reveal.in{opacity:1;transform:none}
.cursor{
  position:fixed;
  left:0;
  top:0;
  width:14px;
  height:14px;
  border-radius:50%;
  background:#fff;
  pointer-events:none;
  z-index:9999;
  mix-blend-mode:difference;
  box-shadow:0 0 0 1px rgba(215,25,45,.16),0 0 18px rgba(215,25,45,.22);
  transition:width .18s ease,height .18s ease,background .18s ease,box-shadow .18s ease;
}
.cursor::after{
  content:"";
  position:absolute;
  inset:-8px;
  border:1px solid rgba(215,25,45,.18);
  border-radius:50%;
  transform:scale(.72);
  opacity:.65;
  transition:opacity .18s ease,transform .18s ease;
}
.cursor.big{width:44px;height:44px;background:rgba(215,25,45,.82);mix-blend-mode:normal;box-shadow:0 0 26px rgba(215,25,45,.35)}
.cursor.big::after{opacity:0;transform:scale(1)}
@keyframes statePulse{0%,100%{opacity:.56}50%{opacity:.96}}
@keyframes padPulse{0%,100%{opacity:.68;background:rgba(215,25,45,.10);box-shadow:0 0 16px -9px rgba(215,25,45,.8)}48%{opacity:1;background:rgba(215,25,45,.20);box-shadow:0 0 28px -8px rgba(215,25,45,.98)}}
@keyframes tubeBreathe{0%,100%{filter:brightness(.92);box-shadow:0 0 42px -18px rgba(215,25,45,.68),inset 0 0 40px rgba(255,255,255,.05)}50%{filter:brightness(1.13);box-shadow:0 0 58px -18px rgba(215,25,45,.95),inset 0 0 48px rgba(255,255,255,.07)}}
@keyframes waveShape{0%,100%{clip-path:polygon(0 56%,10% 50%,17% 55%,24% 34%,32% 52%,40% 30%,49% 58%,58% 38%,68% 54%,78% 32%,88% 48%,100% 42%,100% 100%,0 100%);opacity:.84}50%{clip-path:polygon(0 55%,10% 48%,17% 58%,24% 26%,32% 56%,40% 22%,49% 64%,58% 34%,68% 58%,78% 26%,88% 52%,100% 40%,100% 100%,0 100%);opacity:1}}
@keyframes barsDrift{0%,100%{background-position:0 0,0 0;opacity:.72}50%{background-position:12px 0,8px 0;opacity:.94}}
@keyframes orbitSpin{to{transform:rotate(calc(var(--r) + 360deg)) scaleX(1.8)}}
@keyframes corePulse{0%,100%{box-shadow:0 0 18px rgba(255,255,255,.55),0 0 0 rgba(215,25,45,0)}50%{box-shadow:0 0 22px rgba(255,255,255,.7),0 0 24px rgba(215,25,45,.28)}}
@keyframes hardwareScan{0%,100%{background-position:0 0,0 0;box-shadow:none}50%{background-position:0 18px,0 8px;box-shadow:0 0 36px -24px rgba(215,25,45,.75)}}
@keyframes visualClickFlash{0%{opacity:.34;background-color:rgba(215,25,45,.16)}100%{opacity:.14;background-color:transparent}}
@keyframes visualPadKick{0%{transform:scale(.99);filter:brightness(1)}38%{transform:scale(1.035);filter:brightness(1.28)}100%{transform:scale(1);filter:brightness(1)}}
@keyframes visualPadHit{0%{transform:scale(1);background:rgba(215,25,45,.10);box-shadow:0 0 22px -8px rgba(215,25,45,.8)}38%{transform:scale(1.12);background:rgba(215,25,45,.30);box-shadow:0 0 32px -6px rgba(215,25,45,1)}100%{transform:scale(1);background:rgba(215,25,45,.10);box-shadow:0 0 22px -8px rgba(215,25,45,.8)}}
@keyframes visualTubeKick{0%{filter:brightness(1);box-shadow:0 0 42px -16px rgba(215,25,45,.75),inset 0 0 40px rgba(255,255,255,.06)}42%{filter:brightness(1.35);box-shadow:0 0 72px -14px rgba(215,25,45,1),inset 0 0 54px rgba(255,255,255,.08)}100%{filter:brightness(1);box-shadow:0 0 42px -16px rgba(215,25,45,.75),inset 0 0 40px rgba(255,255,255,.06)}}
@keyframes visualWaveKick{0%{transform:scaleY(1);filter:brightness(1)}38%{transform:scaleY(1.12);filter:brightness(1.35)}100%{transform:scaleY(1);filter:brightness(1)}}
@keyframes visualWaveSnap{0%{clip-path:polygon(0 56%,10% 50%,17% 55%,24% 34%,32% 52%,40% 30%,49% 58%,58% 38%,68% 54%,78% 32%,88% 48%,100% 42%,100% 100%,0 100%);filter:brightness(1)}38%{clip-path:polygon(0 50%,10% 48%,17% 64%,24% 14%,32% 60%,40% 12%,49% 76%,58% 30%,68% 64%,78% 14%,88% 54%,100% 38%,100% 100%,0 100%);filter:brightness(1.35)}100%{clip-path:polygon(0 56%,10% 50%,17% 55%,24% 34%,32% 52%,40% 30%,49% 58%,58% 38%,68% 54%,78% 32%,88% 48%,100% 42%,100% 100%,0 100%);filter:brightness(1)}}
@keyframes visualOrbitKick{0%{filter:brightness(1)}40%{filter:brightness(1.3) drop-shadow(0 0 24px rgba(215,25,45,.45))}100%{filter:brightness(1)}}
@keyframes visualOrbitRingHit{0%{transform:rotate(var(--r)) scaleX(1.8);opacity:1}42%{transform:rotate(calc(var(--r) + 72deg)) scaleX(1.96);opacity:.98}100%{transform:rotate(calc(var(--r) + 120deg)) scaleX(1.8);opacity:1}}
@keyframes visualBarsKick{0%{filter:brightness(1)}36%{filter:brightness(1.34)}100%{filter:brightness(1)}}
@keyframes visualGitLine{0%{color:rgba(255,255,255,.5);transform:translateX(0)}38%{color:#fff;transform:translateX(8px);text-shadow:0 0 16px rgba(215,25,45,.35)}100%{color:rgba(255,255,255,.5);transform:translateX(0)}}
@keyframes visualHardwareKick{0%{filter:brightness(1);box-shadow:none}42%{filter:brightness(1.25);box-shadow:0 0 42px -22px rgba(215,25,45,.82)}100%{filter:brightness(1);box-shadow:none}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:0ms!important}
}
@media (max-width:900px){
  body{cursor:auto}
  a{cursor:pointer}
  .cursor{display:none}
  .topbar{grid-template-columns:1fr auto;height:auto;min-height:58px}
  .topbar .center{display:none}
  .topbar .right{gap:14px;font-size:9px}
}
@media (max-width:760px){
  .spine,.spine-dots,.spine-marker{left:30px}
  .chapter-grid{grid-template-columns:1fr;gap:48px;padding-left:42px}
  .chapter:nth-child(even) .chapter-grid{direction:ltr}
  .hero{padding-left:42px}
}
@media (max-width:620px){
  .wrap{width:calc(100% - 28px)}
  .topbar{padding:0 14px}
  .topbar .right a:not(:first-child){display:none}
  .chapter{padding:86px 0}
  .chapter-title{font-size:42px}
  .lede,.chapter-body{font-size:15px}
}