:root{color-scheme:light;--paper:#f7f3e9;--ink:#302e29;--muted:#746e62;--line:#ded7c8;--accent:#6b5039;--hover:#eee7d9}
:root[data-theme=dark]{color-scheme:dark;--paper:#1b201f;--ink:#e2ded3;--muted:#aaa99f;--line:#3c4541;--accent:#c5ae87;--hover:#29312e}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--paper:#1b201f;--ink:#e2ded3;--muted:#aaa99f;--line:#3c4541;--accent:#c5ae87;--hover:#29312e}}
*{box-sizing:border-box}html{font-size:16px;scroll-padding-top:2rem}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}a{color:inherit;text-underline-offset:.25em}a:hover{color:var(--accent)}button{font:inherit}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:5px}.skip{position:absolute;top:-100px;left:1rem;background:var(--paper);padding:.7rem;z-index:10}.skip:focus{top:.5rem}.site-header{max-width:1080px;margin:auto;padding:25px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-size:20px;letter-spacing:.14em}.brand span{font-size:12px;letter-spacing:.1em;color:var(--muted);margin-left:18px}.site-header nav{display:flex;gap:24px;align-items:center;font-size:14px}.site-header nav a{text-decoration:none;padding:9px 0}#theme-toggle{background:none;border:1px solid var(--line);border-radius:24px;color:var(--ink);padding:8px 15px;cursor:pointer;min-height:44px}#theme-toggle:hover{background:var(--hover)}main{max-width:1080px;margin:auto;min-height:60vh}.book-intro{padding:85px 40px 64px;max-width:780px;margin:auto}.eyebrow{font-size:12px;letter-spacing:.15em;color:var(--muted);text-decoration:none}.book-intro h1{font-family:"Songti SC","Noto Serif CJK SC",SimSun,serif;font-size:clamp(36px,6vw,54px);font-weight:500;letter-spacing:.08em;margin:20px 0}.book-note{font-size:18px;color:var(--muted);margin:0}.schedule,.published{font-size:13px;color:var(--muted)}.schedule{margin:21px 0 32px}.book-actions{display:flex;gap:26px;align-items:center;flex-wrap:wrap}.button{display:inline-block;background:var(--ink);color:var(--paper);border:1px solid var(--ink);border-radius:4px;text-decoration:none;padding:11px 23px;font-size:15px;min-height:46px}.button:hover{background:var(--accent);border-color:var(--accent);color:var(--paper)}.text-link{font-size:14px}.published{margin-top:20px}.contents{max-width:780px;margin:auto;padding:0 40px 72px}.section-heading{display:flex;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:14px}.section-heading h2{font-size:18px;font-weight:500;margin:0}.section-heading span{color:var(--muted);font-size:12px}.chapter-list{list-style:none;margin:0;padding:0}.chapter-list li{border-bottom:1px solid var(--line)}.chapter-list a{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:21px 0;text-decoration:none}.chapter-list time{font-size:12px;white-space:nowrap;color:var(--muted)}.chapter-list a:hover{background:var(--hover)}.waiting{color:var(--muted);padding:22px 0}.full-contents{padding-top:62px}.full-contents h1{font-weight:500;font-size:30px;margin:12px 0 32px}.chapter{max-width:780px;margin:auto;padding:60px 40px}.chapter-header{margin-bottom:50px}.chapter-header h1{font-family:"Songti SC","Noto Serif CJK SC",SimSun,serif;font-weight:500;font-size:clamp(26px,4.5vw,34px);line-height:1.6;margin:20px 0}.chapter-meta{font-size:12px;color:var(--muted);display:flex;gap:20px}.prose{font-family:"Songti SC","Noto Serif CJK SC",SimSun,serif;font-size:19px;line-height:2.05;letter-spacing:.025em;overflow-wrap:anywhere}.prose p{margin:0 0 1.5em;text-indent:2em}.prose h2{font-size:22px;font-weight:500;margin:2em 0 1em}.prose hr{border:0;border-top:1px solid var(--line);margin:3em 5em}.chapter-nav{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;padding:26px 0;border-top:1px solid var(--line);margin-top:64px;font-size:14px}.chapter-nav>:last-child{text-align:right}.chapter-nav span{color:var(--muted)}.back-top{font-size:12px;color:var(--muted);display:block;text-align:center;padding:12px}.site-footer{max-width:1000px;margin:auto;border-top:1px solid var(--line);padding:32px 40px 38px;color:var(--muted);font-size:13px}.fine{font-size:12px;max-width:680px}.promo{display:inline-flex;align-items:center;gap:12px;font-size:13px;margin-top:12px}.promo span{font-size:11px;text-decoration:none}.not-found{padding:80px 40px;max-width:780px;margin:auto}.not-found h1{font-size:30px;font-weight:500}.not-found .button{margin-top:20px}[hidden]{display:none!important}
@media(max-width:600px){.site-header{padding:16px 20px}.brand{font-size:18px}.brand span{display:none}.site-header nav{gap:18px;font-size:13px}#theme-toggle{padding:7px 12px}.book-intro{padding:55px 24px 42px}.contents{padding:0 24px 48px}.full-contents{padding-top:42px}.chapter-list a{align-items:flex-start;flex-direction:column;gap:6px;padding:18px 0}.chapter{padding:38px 24px}.chapter-header{margin-bottom:32px}.prose{font-size:18px;line-height:2}.chapter-nav{gap:12px;font-size:13px}.site-footer{padding:26px 24px 32px}.book-actions{gap:20px}.not-found{padding:60px 24px}}
@media print{.site-header,.site-footer,.chapter-nav,.back-top,.skip{display:none}body{background:white;color:black}.chapter{max-width:none;padding:0}.prose{font-size:12pt}}