:root[data-theme="light"]{--ink:#1a1a1a;--muted:#6b6a64;--rule:#e2e0da;--paper:#fbfaf7;--panel:#fff}
:root[data-theme="sepia"]{--ink:#3b2f22;--muted:#7a6a58;--rule:#e0d5c2;--paper:#f6efe2;--panel:#fdf8ee}
:root[data-theme="dark"]{--ink:#ddd9d1;--muted:#98938a;--rule:#34322e;--paper:#161513;--panel:#201f1c}
:root{--accent:#8a6d3b}
:root[data-theme="dark"]{--accent:#b08d57}

:root[data-size="0"]{--fs:16px}
:root[data-size="1"]{--fs:18px}
:root[data-size="2"]{--fs:19px}
:root[data-size="3"]{--fs:21px}
:root[data-size="4"]{--fs:24px}

:root[data-font="serif"]{--reading:"Garamond", "EB Garamond", "Palatino", Georgia, serif}
:root[data-font="sans"]{--reading:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}


*{box-sizing:border-box}
html{transition:background-color .15s ease}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--reading);line-height:1.65;font-size:var(--fs)}
.wrap{max-width:38rem;margin:0 auto;padding:0 1.25rem}
header.masthead{text-align:center;padding:3.5rem 0 3rem}
header.masthead h1{font-size:2.6rem;margin:0;font-weight:400;font-variant:small-caps;letter-spacing:.08em;line-height:1.15}
header.masthead .subtitle{font-style:italic;color:var(--muted);margin:.6rem 0 0;font-size:1.15rem}
header.masthead .byline{margin:1.6rem 0 0;font-variant:small-caps;letter-spacing:.1em;font-size:.95rem;color:var(--muted)}
.rule{width:4rem;height:1px;background:var(--accent);margin:2rem auto}
.tagline{text-align:center;color:var(--muted);font-style:italic;margin:0 0 3rem}
.toc{list-style:none;padding:0;margin:0 0 4rem}
.toc li{border-top:1px solid var(--rule);padding:1.15rem 0}
.toc li:last-child{border-bottom:1px solid var(--rule)}
.toc a{text-decoration:none;color:inherit;display:block}
.toc a:hover .t{color:var(--accent)}
.toc .n{font-variant:small-caps;letter-spacing:.1em;font-size:.8rem;color:var(--muted)}
.toc .t{font-size:1.25rem;margin:.15rem 0}
.toc .d{color:var(--muted);font-size:.95rem;margin:.25rem 0 0}
.toc .meta{font-size:.8rem;color:var(--muted);margin-top:.4rem}
.badge{display:inline-block;border:1px solid var(--rule);border-radius:2px;padding:0 .4em;font-size:.7rem;
  font-variant:small-caps;letter-spacing:.08em;margin-left:.5em;color:var(--muted)}
article h1{font-size:2.1rem;font-weight:400;font-variant:small-caps;letter-spacing:.06em;text-align:center;margin:3.5rem 0 .5rem}
article .epi{font-style:italic;color:var(--muted);text-align:center;margin:0 auto 3rem;max-width:28rem}
article h2{font-size:1.15rem;font-weight:400;font-variant:small-caps;letter-spacing:.08em;
  text-align:center;margin:3rem 0 1rem}
article h3{font-size:1.05rem;font-weight:400;font-style:italic;
  text-align:center;margin:2.2rem 0 .8rem}
article p{margin:0 0 1.1rem}
article blockquote{margin:1.8rem 0;padding-left:1.2rem;border-left:2px solid var(--accent);font-style:italic;color:#333}
article blockquote p{margin:0}
article hr.sb{border:0;text-align:center;margin:2.5rem 0}
article hr.sb:after{content:"* * *";letter-spacing:.6em;color:var(--muted)}
article ul,article ol{padding-left:1.4rem}
article li{margin-bottom:.6rem}
nav.chapnav{display:flex;justify-content:space-between;gap:1rem;border-top:1px solid var(--rule);
  margin:4rem 0 0;padding:1.5rem 0 5rem;font-size:.9rem}
nav.chapnav a{color:var(--accent);text-decoration:none}

.topbar{position:sticky;top:0;z-index:40;background:var(--paper);border-bottom:1px solid var(--rule)}
.topbar-inner{max-width:38rem;margin:0 auto;padding:.55rem 1.25rem;display:flex;
  align-items:center;justify-content:space-between;gap:1rem}
.tb-home{color:var(--ink);text-decoration:none;font-size:.85rem;letter-spacing:.04em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-home:hover{color:var(--accent)}
.tb-right{position:relative;display:flex;align-items:center;gap:.4rem}
.rc-open{border:1px solid var(--rule);background:transparent;color:var(--ink);cursor:pointer;
  border-radius:6px;padding:.25rem .6rem;font-family:inherit;font-size:.95rem;line-height:1.4}
.rc-open:hover,.rc-open[aria-expanded="true"]{border-color:var(--accent);color:var(--accent)}
.rc-panel{position:absolute;right:0;top:calc(100% + .5rem);z-index:41;width:16rem;
  max-width:calc(100vw - 2.5rem);background:var(--panel);border:1px solid var(--rule);
  border-radius:10px;padding:.9rem;box-shadow:0 6px 24px rgba(0,0,0,.16);display:none;text-align:left}
.rc-panel[data-open="true"]{display:block}
.rc-row{margin-bottom:.85rem}
.rc-row:last-child{margin-bottom:0}
.rc-label{font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);
  margin:0 0 .4rem;font-weight:400}
.rc-seg{display:flex;gap:.3rem}
.rc-seg button{flex:1;padding:.42rem .3rem;font-size:.8rem;font-family:inherit;
  border:1px solid var(--rule);border-radius:6px;background:transparent;color:var(--ink);cursor:pointer}
.rc-seg button:hover{border-color:var(--accent)}
.rc-seg button[aria-pressed="true"]{border-color:var(--accent);color:var(--accent);font-weight:500}
.rc-size{display:flex;align-items:center;gap:.5rem}
.rc-size button{width:2.2rem;height:2rem;font-size:.95rem;font-family:inherit;
  border:1px solid var(--rule);border-radius:6px;background:transparent;color:var(--ink);cursor:pointer}
.rc-size button:hover:not(:disabled){border-color:var(--accent)}
.rc-size button:disabled{opacity:.35;cursor:default}
.rc-steps{flex:1;display:flex;gap:.25rem;align-items:center;justify-content:center}
.rc-steps i{width:.4rem;height:.4rem;border-radius:50%;background:var(--rule);display:block}
.rc-steps i.on{background:var(--accent)}
@media print{.topbar{display:none !important}}

footer.foot{border-top:1px solid var(--rule);padding:2rem 0 4rem;text-align:center;font-size:.8rem;color:var(--muted)}
@media(max-width:640px){body{font-size:17px}header.masthead{padding:3rem 0 2rem}header.masthead h1{font-size:2rem}}