:root{--ink:#182334;--muted:#697483;--paper:#f4f1eb;--card:#fff;--rust:#a85f3f;--teal:#315e69;--line:#e5ddd3}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.78 Georgia,'Times New Roman',serif}
.book-shell{max-width:920px;margin:auto;padding:34px 18px 72px}.cover,.toc,.chapter{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 36px rgba(28,35,45,.07)}
.cover{min-height:590px;padding:clamp(30px,7vw,72px);display:flex;flex-direction:column;justify-content:flex-end;position:relative;overflow:hidden;background:linear-gradient(145deg,#162d3b 0%,#355b64 40%,#b77755 72%,#e7b477 100%);color:#fff}
.cover:before{content:"19:45";position:absolute;right:-22px;top:10px;font:900 clamp(6rem,20vw,11rem)/1 system-ui;letter-spacing:-.08em;opacity:.08}
.cover:after{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:rgba(255,255,255,.12)}
.kicker{font:850 11px/1.3 system-ui;letter-spacing:.18em;text-transform:uppercase}.cover h1{font-size:clamp(3rem,8vw,6.2rem);line-height:.94;letter-spacing:-.055em;margin:14px 0 20px;max-width:760px}.subtitle{max-width:690px;font:500 1.2rem/1.55 system-ui;opacity:.92}.note{margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.25);font:13px/1.6 system-ui;opacity:.76}
.toc,.chapter{padding:clamp(25px,6vw,56px);margin-top:24px}.toc h2,.chapter h2{font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.12;margin:.18em 0 .8em}.toc a{display:flex;gap:15px;color:var(--ink);text-decoration:none;padding:11px 0;border-bottom:1px solid var(--line);font-family:system-ui}.toc a span{color:var(--rust);font-weight:850}.chapter-no{font:850 11px/1 system-ui;letter-spacing:.16em;color:var(--rust);text-transform:uppercase}.chapter p{margin:0 0 1.15em}.chapter p:first-of-type:first-letter{float:left;font-size:4rem;line-height:.8;padding:.1em .12em 0 0;color:var(--rust);font-weight:700}.nav{display:flex;justify-content:space-between;gap:18px;margin-top:30px;padding-top:18px;border-top:1px solid var(--line);font:700 14px/1.4 system-ui}.nav a{color:var(--teal);text-decoration:none}
@media(max-width:600px){body{font-size:17px}.book-shell{padding:18px 10px 55px}.cover{min-height:500px;border-radius:17px;padding:28px 22px}.toc,.chapter{border-radius:17px;padding:26px 21px}.nav{font-size:12px}}