:root{--reader-bg:#f4f1e8;--reader-panel:#fbf8f0;--reader-ink:#282b2d;--reader-muted:#777a77;--reader-line:#ddd9cd;--reader-accent:#0a9b6d;--reader-font:18px;--reader-leading:2;--reader-width:760px;--serif:'Songti SC','Noto Serif SC','Source Han Serif SC',Georgia,serif;--sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}html[data-theme="white"]{--reader-bg:#f4f5f6;--reader-panel:#fff;--reader-ink:#202327;--reader-muted:#72777d;--reader-line:#e2e4e6}html[data-theme="night"]{--reader-bg:#171b1d;--reader-panel:#202527;--reader-ink:#c9cdca;--reader-muted:#89908d;--reader-line:#343a3d;--reader-accent:#41b98d}body{margin:0;min-height:100vh;background:var(--reader-bg);color:var(--reader-ink);font-family:var(--serif);transition:background .18s,color .18s}button,a{font:inherit}a{color:inherit;text-decoration:none}.read-progress{position:fixed;z-index:60;inset:0 0 auto;height:3px;background:transparent}.read-progress span{display:block;width:0;height:100%;background:var(--reader-accent)}.reader-bar{position:sticky;z-index:40;top:0;height:58px;border-bottom:1px solid var(--reader-line);background:color-mix(in srgb,var(--reader-panel) 94%,transparent);backdrop-filter:blur(14px)}.reader-bar-inner{height:100%;max-width:1320px;margin:auto;padding:0 22px;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:14px;font-family:var(--sans)}.reader-bar-left,.reader-tools{display:flex;align-items:center;gap:8px;min-width:0}.reader-tools{justify-content:flex-end}.reader-book{min-width:0}.reader-book strong,.reader-book small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-book strong{font-size:15.5px}.reader-book small{margin-top:2px;color:var(--reader-muted);font-size:13px}.reader-location{color:var(--reader-muted);font-size:13.5px}.icon-button{width:38px;height:38px;display:grid;place-items:center;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--reader-ink);cursor:pointer}.icon-button:hover{border-color:var(--reader-line);background:var(--reader-panel)}.icon-button.text{width:auto;padding:0 11px;font-family:var(--sans);font-size:13.5px}.reader-shell{max-width:1320px;margin:0 auto;padding:38px 24px 90px;display:grid;grid-template-columns:260px minmax(0,var(--reader-width));justify-content:center;gap:54px;align-items:start}.chapter-drawer{position:sticky;top:86px;max-height:calc(100vh - 112px);overflow:hidden;border:1px solid var(--reader-line);border-radius:7px;background:var(--reader-panel);font-family:var(--sans)}.drawer-head{padding:18px;border-bottom:1px solid var(--reader-line)}.drawer-head strong{font-size:16.5px}.drawer-head span{display:block;margin-top:5px;color:var(--reader-muted);font-size:13px}.chapter-list{max-height:calc(100vh - 190px);overflow:auto;padding:8px}.chapter-link{display:grid;grid-template-columns:30px minmax(0,1fr);gap:8px;padding:10px;border-radius:5px;color:var(--reader-muted);font-size:13.5px;line-height:1.55}.chapter-link span:first-child{font-variant-numeric:tabular-nums}.chapter-link:hover{background:color-mix(in srgb,var(--reader-accent) 8%,transparent);color:var(--reader-ink)}.chapter-link.active{background:color-mix(in srgb,var(--reader-accent) 12%,transparent);color:var(--reader-accent);font-weight:700}.reader-paper{min-width:0;padding:58px 66px 72px;border:1px solid var(--reader-line);background:var(--reader-panel);box-shadow:0 14px 44px rgba(35,38,37,.06)}.chapter-no{margin:0 0 12px;color:var(--reader-accent);font-family:var(--sans);font-size:13.5px;font-weight:700;text-align:center}.reader-paper h1{margin:0 0 48px;font-size:30px;line-height:1.45;text-align:center;letter-spacing:0}.reader-content{font-size:var(--reader-font);line-height:var(--reader-leading)}.reader-content p{margin:0 0 .9em;text-align:justify;overflow-wrap:anywhere}.reader-content>p{text-indent:2em}.reader-content h2,.reader-content h3,.reader-content h4{margin:2.2em 0 1em;line-height:1.55;text-align:center}.reader-content h2{font-size:1.18em}.reader-content h3{font-size:1.08em}.reader-content blockquote{margin:1.6em 0;padding:.2em 0 .2em 1.2em;border-left:3px solid var(--reader-accent);color:var(--reader-muted)}.reader-content ul,.reader-content ol{padding-left:1.6em}.chapter-nav{margin-top:58px;padding-top:24px;border-top:1px solid var(--reader-line);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;font-family:var(--sans);font-size:14.5px}.chapter-nav a{color:var(--reader-muted)}.chapter-nav a:hover{color:var(--reader-accent)}.chapter-nav>a:last-child{text-align:right}.nav-home{display:flex;gap:14px;justify-content:center;white-space:nowrap}.settings{position:fixed;z-index:55;top:66px;right:22px;width:286px;padding:18px;border:1px solid var(--reader-line);border-radius:7px;background:var(--reader-panel);box-shadow:0 16px 42px rgba(17,22,20,.16);font-family:var(--sans)}.settings[hidden]{display:none}.setting-row{display:grid;grid-template-columns:64px minmax(0,1fr);align-items:center;gap:12px;margin:12px 0}.setting-row label{color:var(--reader-muted);font-size:13.5px}.segments{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;border:1px solid var(--reader-line);border-radius:5px;overflow:hidden}.segments button,.stepper button{min-height:34px;border:0;border-right:1px solid var(--reader-line);background:transparent;color:var(--reader-ink);cursor:pointer;font-size:13.5px}.segments button:last-child{border-right:0}.segments button.active{background:var(--reader-accent);color:#fff}.stepper{display:grid;grid-template-columns:36px 1fr 36px;border:1px solid var(--reader-line);border-radius:5px;overflow:hidden;text-align:center}.stepper button{border-right:1px solid var(--reader-line)}.stepper button:last-child{border:0;border-left:1px solid var(--reader-line)}.stepper span{align-self:center;font-size:13.5px}.drawer-mask{display:none}
@media(max-width:980px){.reader-shell{display:block;max-width:var(--reader-width);padding:28px 18px 70px}.chapter-drawer{position:fixed;z-index:70;top:0;bottom:0;left:0;width:min(320px,86vw);max-height:none;border:0;border-radius:0;transform:translateX(-105%);transition:transform .2s;box-shadow:14px 0 42px rgba(0,0,0,.2)}body.drawer-open .chapter-drawer{transform:translateX(0)}.chapter-list{max-height:calc(100vh - 82px)}.drawer-mask{position:fixed;z-index:65;inset:0;background:rgba(0,0,0,.34)}body.drawer-open .drawer-mask{display:block}.reader-paper{padding:46px 8vw 60px}.reader-location{display:none}}
@media(max-width:620px){.reader-bar-inner{grid-template-columns:minmax(0,1fr) auto;padding:0 10px}.reader-bar-center{display:none}.reader-book small{display:none}.reader-shell{padding:18px 0 54px}.reader-paper{border-left:0;border-right:0;padding:38px 22px 54px;box-shadow:none}.reader-paper h1{margin-bottom:36px;font-size:25px}.reader-content{font-size:calc(var(--reader-font) - 1px)}.settings{top:62px;right:10px;width:calc(100vw - 20px)}}
@media print{.reader-bar,.chapter-drawer,.drawer-mask,.settings,.read-progress,.chapter-nav{display:none!important}.reader-shell{display:block;max-width:none;padding:0}.reader-paper{max-width:none;padding:0;border:0;box-shadow:none}.reader-content{font-size:11pt}}
/* 翻页模式（微信读书式，默认；用户 8/17 定向：翻页而非滚动+手机适配） */
html[data-rmode="page"]{height:100%}html[data-rmode="page"] body{height:100dvh;overflow:hidden;overscroll-behavior:none}
html[data-rmode="page"] .reader-shell{height:calc(100dvh - 58px);padding:20px 24px calc(16px + env(safe-area-inset-bottom));overflow:hidden;align-items:stretch}
html[data-rmode="page"] .reader-paper{display:flex;flex-direction:column;height:100%;overflow:hidden;padding:30px 52px 26px}
html[data-rmode="page"] .paper-flow{flex:1;min-height:0;overflow:hidden}
html[data-rmode="page"] .flow-inner{height:100%;column-fill:auto;transition:transform .25s ease;will-change:transform}
html[data-rmode="page"] .flow-inner h1{margin-bottom:30px;font-size:26px}
html[data-rmode="page"] .chapter-nav{display:none}
.page-indicator{display:none}
html[data-rmode="page"] .page-indicator{display:block;margin-top:10px;color:var(--reader-muted);font-family:var(--sans);font-size:13px;text-align:center}
html[data-rmode="page"] .chapter-drawer{max-height:100%}
@media(max-width:980px){html[data-rmode="page"] .reader-shell{height:calc(100dvh - 58px);padding:12px 0 calc(8px + env(safe-area-inset-bottom))}html[data-rmode="page"] .reader-paper{border:0;box-shadow:none;padding:18px 22px 12px}}