: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}html[data-theme="sepia"]{--reader-bg:#eee1c6;--reader-panel:#f7ecd6;--reader-ink:#3c3222;--reader-muted:#84765c;--reader-line:#e0d0ae;--reader-accent:#8a6a2f}html[data-theme="green"]{--reader-bg:#d6e4d6;--reader-panel:#e6f0e3;--reader-ink:#25322a;--reader-muted:#5f7266;--reader-line:#c2d4c1;--reader-accent:#2f7d5c}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 transparent;background:color-mix(in srgb,var(--reader-bg) 92%,transparent);backdrop-filter:blur(10px)}.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:0;border-radius:7px;background:transparent;font-family:var(--sans)}.drawer-head{padding:18px;border-bottom:1px solid color-mix(in srgb,var(--reader-line) 60%,transparent)}.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:0;border-radius:10px;background:var(--reader-panel);box-shadow:0 8px 40px rgba(35,38,37,.07),0 1px 3px rgba(35,38,37,.05)}.crumbs{margin:0 0 18px;font-family:var(--sans);font-size:13px;color:var(--reader-muted);text-align:center}.crumbs a{color:inherit;text-decoration:underline;text-underline-offset:3px}.crumbs i{font-style:normal;margin:0 6px;opacity:.6}.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}.reader-content .ill-figure{margin:2em 0;text-align:center;text-indent:0}.reader-content .ill-figure img{max-width:100%;max-height:min(72vh,680px);width:auto;height:auto;object-fit:contain;border-radius:6px;box-shadow:0 2px 12px rgba(0,0,0,.12)}.reader-content .ill-figure+p{text-indent:0;text-align:center;color:var(--reader-muted);font-size:.92em}.reader-content .ill-figure+p+blockquote{border:0;padding:0;margin:-.6em 0 1.6em;text-align:center;color:var(--reader-muted);font-size:.85em}.reader-content .ill-figure figcaption{margin-top:11px;font-family:var(--sans);font-size:.72em;line-height:1.75;color:var(--reader-muted);letter-spacing:.02em;text-align:center;text-indent:0}.reader-content .ill-figure .fig-no{margin-right:.7em;font-weight:700;font-variant-numeric:tabular-nums;color:var(--reader-accent)}.reader-content .ill-figure .ill-credit{display:block;margin-top:3px;font-size:.88em;letter-spacing:.04em;color:color-mix(in srgb,var(--reader-muted) 72%,transparent)}.reader-content .ill-inset{max-width:68%;margin-left:auto;margin-right:auto}.reader-content .ill-float-r,.reader-content .ill-float-l{width:44%;margin-top:.35em;margin-bottom:1.1em}.reader-content .ill-float-r{float:right;margin-left:26px}.reader-content .ill-float-l{float:left;margin-right:26px}.reader-content .ill-float-r figcaption,.reader-content .ill-float-l figcaption{text-align:left;font-size:.68em}.reader-content::after{content:'';display:table;clear:both}.reader-content h2,.reader-content h3{clear:both}@media(max-width:680px){.reader-content .ill-inset{max-width:100%}.reader-content .ill-float-r,.reader-content .ill-float-l{float:none;width:100%;margin:1.6em 0}.reader-content .ill-float-r figcaption,.reader-content .ill-float-l figcaption{text-align:center}}.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}.big-next{display:block;margin:44px auto 0;padding:15px 20px;max-width:420px;border:1px solid var(--reader-line);border-radius:9px;background:color-mix(in srgb,var(--reader-accent) 9%,var(--reader-panel));color:var(--reader-accent);font-family:var(--sans);font-size:15.5px;font-weight:700;text-align:center}
.big-next:active{transform:scale(.985)}
.reader-edition{flex:none;max-height:35dvh;overflow:auto;padding:12px 0;margin-bottom:14px;border-bottom:1px solid var(--reader-line);font:14px/1.5 var(--sans);color:var(--reader-ink)}
.reader-edition p{margin:0 0 6px}.reader-edition>div{display:flex;gap:8px;flex-wrap:wrap}.reader-edition a,.reader-edition button{display:inline-flex;align-items:center;min-height:44px;padding:6px 10px;border:1px solid var(--reader-line);border-radius:5px;background:var(--reader-panel);color:var(--reader-accent);cursor:pointer}
.reader-sync-status{font:12px/1.4 var(--sans);color:var(--reader-muted);max-width:76px;overflow-wrap:anywhere}.reader-sync-choice button{max-width:100%;text-align:left;overflow-wrap:anywhere}
.reader-sync-recover{flex-shrink:0;max-width:76px;min-height:44px;padding:4px 8px;border:1px solid var(--reader-line);border-radius:5px;background:var(--reader-panel);color:var(--reader-accent);font:12px/1.4 var(--sans);cursor:pointer;overflow-wrap:anywhere}.reader-sync-recover[hidden],.reader-sync-status[hidden]{display:none}.reader-sync-recover:focus-visible{outline:2px solid var(--reader-accent);outline-offset:2px}.reader-sync-recover:disabled{cursor:wait;opacity:.65}
.reader-floating{position:fixed;z-index:50;right:22px;bottom:22px;display:flex;align-items:center;gap:8px;padding:8px;border:1px solid var(--reader-line);border-radius:22px;background:color-mix(in srgb,var(--reader-panel) 96%,transparent);box-shadow:0 12px 34px rgba(20,28,24,.14);backdrop-filter:blur(12px);font-family:var(--sans)}
.reader-floating button{min-width:50px;min-height:34px;padding:0 12px;border:0;border-radius:17px;background:transparent;color:var(--reader-muted);font-size:13px;font-weight:700;cursor:pointer}
.reader-floating button:hover{background:color-mix(in srgb,var(--reader-accent) 10%,transparent);color:var(--reader-accent)}
.reader-floating span{min-width:48px;color:var(--reader-accent);font-size:13px;font-weight:800;text-align:center;font-variant-numeric:tabular-nums}
.reader-bar,.reader-floating{transition:transform .22s ease}
body.chrome-hidden .reader-bar{transform:translateY(-110%)}
body.chrome-hidden .reader-floating{transform:translateY(190%)}
html[data-rmode="page"] .paper-flow{transition:transform .16s ease-out}
.reader-floating input[type=range]{width:110px;accent-color:var(--reader-accent);margin:0 2px}
@media(max-width:620px){body .reader-floating{display:grid;grid-template-columns:44px minmax(0,1fr) 48px 44px}body .reader-floating button{min-width:44px;width:44px;padding:0;font-size:20px}body .reader-floating input[type=range]{width:100%;min-width:0;margin:0}}
.bm-head{padding:12px 18px 4px;color:var(--reader-muted);font-family:var(--sans);font-size:13px;font-weight:700;letter-spacing:.06em}
.bm-list{max-height:180px;overflow:auto;padding:0 8px 8px}
.bm-row{display:block;width:100%;text-align:left;border:0;background:transparent;padding:8px 10px;border-radius:5px;color:var(--reader-muted);font-family:var(--sans);font-size:13px;line-height:1.6;cursor:pointer}
.bm-row:hover{background:color-mix(in srgb,var(--reader-accent) 8%,transparent);color:var(--reader-ink)}
.bm-row b{color:var(--reader-accent);font-weight:700;margin-right:6px}
.bm-empty{padding:4px 18px 10px;color:var(--reader-muted);font-family:var(--sans);font-size:13px}
/* v6.9.26 正文划线（微信读书式）：他人虚线 / 含我实线 / ≥2人缀人数角标（::after 零文本变异） */
.hai-hl{border-bottom:1.5px dashed color-mix(in srgb,var(--reader-accent) 62%,transparent);cursor:pointer;transition:background .12s}
.hai-hl:hover{background:color-mix(in srgb,var(--reader-accent) 10%,transparent)}
.hai-hl.mine{border-bottom:2px solid var(--reader-accent)}
.hai-hl[data-n]::after{content:attr(data-n);margin:0 1px 0 2px;color:var(--reader-accent);font:700 11px var(--sans);vertical-align:super}
.idea-dot-ico{width:12px;height:12px;object-fit:contain;vertical-align:-1px;margin-right:3px}
.idea-dot{display:inline-flex;align-items:center;margin-left:6px;padding:1px 7px;border-radius:9px;background:color-mix(in srgb,var(--reader-accent) 14%,var(--reader-panel));color:var(--reader-accent);font-family:var(--sans);font-size:13px;font-weight:700;cursor:pointer;vertical-align:super;line-height:1.4;user-select:none}
.idea-sheet{position:fixed;z-index:90;left:0;right:0;bottom:0;max-height:62vh;overflow:auto;padding:18px 18px 26px;border-radius:14px 14px 0 0;background:var(--reader-panel);color:var(--reader-ink);box-shadow:0 -14px 44px rgba(15,20,18,.28);font-family:var(--sans)}
.idea-sheet h4{margin:0 0 4px;padding-right:42px;font-size:15px}
.idea-sheet[hidden]{display:none}.idea-sheet .idea-act button{min-width:44px;min-height:44px;border:0;background:transparent;color:var(--reader-accent);font:inherit;cursor:pointer}
.idea-sheet .idea-quote{margin:0 0 12px;padding:8px 12px;border-left:3px solid var(--reader-accent);color:var(--reader-muted);font-size:13px;line-height:1.6}
.idea-item{padding:10px 0;border-top:1px solid var(--reader-line)}
.idea-item .who{font-size:13px;color:var(--reader-muted)}
.idea-item .who b{color:var(--reader-ink)}
.idea-item .txt{margin:4px 0 0;font-size:14.5px;line-height:1.7}
.idea-reply{margin:8px 0 0 14px;padding:6px 10px;border-left:2px solid var(--reader-line);font-size:13px}
.idea-act{margin-top:6px;display:flex;gap:14px;font-size:13px;color:var(--reader-muted)}
.idea-act span{cursor:pointer}
.idea-act span:hover{color:var(--reader-accent)}
.idea-input{display:flex;gap:8px;margin-top:10px}
.idea-input textarea{flex:1;min-height:40px;padding:8px 10px;border:1px solid var(--reader-line);border-radius:8px;background:var(--reader-bg);color:var(--reader-ink);font:13.5px var(--sans);resize:vertical}
.idea-input button{align-self:flex-end;min-height:36px;padding:0 16px;border:0;border-radius:18px;background:var(--reader-accent);color:#fff;font-weight:700;cursor:pointer}
.idea-hint{margin-top:10px;font-size:13px;color:var(--reader-muted)}
.idea-hint a{color:var(--reader-accent)}
.review-box{margin:30px auto 0;max-width:560px;padding:18px;border:1px solid var(--reader-line);border-radius:12px;background:var(--reader-panel);font-family:var(--sans)}
.review-box h3{margin:0 0 10px;font-size:16px}
.stars{display:flex;gap:6px;font-size:26px;cursor:pointer;user-select:none}
.stars span{color:#c9cdc9;transition:color .12s}
.stars span.on{color:#e8a33d}
.review-agg{margin:0 0 10px;font-size:13.5px;color:var(--reader-muted)}
.review-agg b{color:#e8a33d;font-size:18px}
.drawer-mask{display:none}
.reader-panel-close{position:absolute;top:8px;right:8px;display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:6px;background:transparent;color:var(--reader-ink);font-size:26px;cursor:pointer}.reader-panel-close:hover{background:color-mix(in srgb,var(--reader-accent) 10%,transparent)}.reader-panel-close:focus-visible{outline:2px solid var(--reader-accent);outline-offset:-3px}.drawer-head{padding-right:58px}.settings>strong{display:block;padding-right:36px}
@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;background:var(--reader-panel);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)}.reader-floating{left:14px;right:14px;bottom:12px;justify-content:space-between;border-radius:20px}.reader-floating button{min-width:72px}}
/* v4.95 EN-native typography: latin serif, no indent, left align + hyphens */
html[lang="en"] .reader-content{font-family:Georgia,'Iowan Old Style','Times New Roman',serif;text-align:left}
html[lang="en"] .reader-content p{text-align:left;hyphens:auto;overflow-wrap:break-word}
/* v5.25 阅读体验深化：字体切换（黑体档覆盖 zh 衬线与 en Georgia） */
html[data-face="sans"] .reader-content{font-family:var(--sans)}
html[data-face="sans"] .reader-paper h1,html[data-face="sans"] .reader-content h2,html[data-face="sans"] .reader-content h3{font-family:var(--sans)}
html[data-face="kai"] .reader-content{font-family:'Kaiti SC','STKaiti','KaiTi','TW-Kai','Noto Serif SC',serif}
.swatches{display:flex;gap:10px;flex-wrap:wrap}.swatch{width:32px;height:32px;border-radius:50%;border:2px solid var(--reader-line);cursor:pointer;padding:0}.swatch.active{border-color:var(--reader-accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--reader-accent) 35%,transparent)}
/* v5.25 插图 lightbox */
.ill-lightbox{position:fixed;inset:0;z-index:90;background:rgba(12,14,15,.9);display:grid;place-items:center;padding:4vh 4vw;cursor:zoom-out;backdrop-filter:blur(6px)}
.ill-lightbox figure{margin:0;max-width:min(1200px,94vw);text-align:center}
.ill-lightbox img{max-width:100%;max-height:78vh;border-radius:8px;box-shadow:0 24px 80px rgba(0,0,0,.5)}
.ill-lightbox figcaption{margin-top:14px;color:#e8e6e1;font-family:var(--sans);font-size:14.5px;line-height:1.7}
.ill-lightbox figcaption small{display:block;margin-top:4px;color:#9a978f;font-size:13px}
/* ── v5.23 排版类型化：排版族与篇幅族同构，narrative=基线不加选择器 ──
   explainer 讲解族：小标题左对齐带 accent 竖线（讲义感），要点引文变浅底要点框
   survey   图鉴族：章题下双细线（图鉴卡），出处/观察引文带自然绿系边
   method   方法族：模块小标题带编号感方块，列表强化，引文变行动要点框 */
html[data-family="explainer"] .reader-content h2,html[data-family="explainer"] .reader-content h3{text-align:left;padding-left:14px;border-left:3px solid var(--reader-accent)}
html[data-family="explainer"] .reader-content blockquote{border-left:0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--reader-accent) 7%,var(--reader-panel));color:var(--reader-ink)}
html[data-family="survey"] .reader-paper h1{padding-bottom:18px;border-bottom:3px double var(--reader-line)}
html[data-family="survey"] .reader-content blockquote{border-left:3px solid #4f8d5d;color:var(--reader-muted);font-size:.95em}
html[data-family="survey"] .reader-content h2,html[data-family="survey"] .reader-content h3{text-align:left}
html[data-family="method"] .reader-content h2,html[data-family="method"] .reader-content h3{text-align:left;padding:6px 12px;background:color-mix(in srgb,var(--reader-accent) 9%,var(--reader-panel));border-radius:6px;display:inline-block}
/* ── v5.42 排版按书型分化（用户定调：章题/段落/插图不再千书一面）────
   narrative=叙事史（缺省）：居中章题+细分隔线+首行缩进+画册式插图
   explainer=概念递进：左对齐大章题+accent 短线+块段落+简洁插图
   survey=图鉴巡礼：小盖帽章题+双细线+条目段落+标本卡插图
   method=方法框架：左侧竖条章题+块段落+图表式插图 */
html[data-family="narrative"] .chapter-no,html:not([data-family]) .chapter-no{letter-spacing:.35em}
html[data-family="narrative"] .reader-paper h1::after{content:"";display:block;width:56px;height:2px;margin:26px auto 0;background:var(--reader-accent);opacity:.55}
html[data-family="narrative"] .reader-content .ill-figure img{border-radius:3px;border:1px solid var(--reader-line);padding:8px;background:var(--reader-panel);box-shadow:0 6px 22px rgba(0,0,0,.10)}
html[data-family="explainer"] .reader-paper h1{text-align:left;font-size:27px;margin-bottom:14px}
html[data-family="explainer"] .chapter-no{text-align:left;letter-spacing:.18em}
html[data-family="explainer"] .reader-paper h1::after{content:"";display:block;width:44px;height:3px;margin:18px 0 0;background:var(--reader-accent);border-radius:2px}
html[data-family="explainer"] .reader-paper h1+.reader-content{margin-top:34px}
html[data-family="explainer"] .reader-content>p,html[data-family="method"] .reader-content>p{text-indent:0;margin:0 0 1.15em}
html[data-family="explainer"] .reader-content .ill-figure img{border-radius:8px;box-shadow:none;border:1px solid var(--reader-line)}
html[data-family="explainer"] .reader-content .ill-figure+p{text-align:left;padding-left:2px}
html[data-family="survey"] .chapter-no{letter-spacing:.5em;font-size:13px}
html[data-family="survey"] .reader-paper h1{font-size:26px;padding-bottom:22px;border-bottom:3px double var(--reader-line)}
html[data-family="survey"] .reader-content>p{text-indent:0;margin:0 0 1.05em}
html[data-family="survey"] .reader-content .ill-figure{padding:14px 14px 8px;border:1px solid var(--reader-line);border-radius:4px;background:color-mix(in srgb,var(--reader-panel) 60%,var(--reader-bg))}
html[data-family="survey"] .reader-content .ill-figure img{border-radius:2px;box-shadow:none}
html[data-family="method"] .reader-paper h1{text-align:left;font-size:26px;padding-left:16px;border-left:5px solid var(--reader-accent)}
html[data-family="method"] .chapter-no{text-align:left;letter-spacing:.18em}
html[data-family="method"] .reader-content .ill-figure img{border-radius:6px;box-shadow:none;border:1px solid var(--reader-line);background:#fff;padding:6px}
html[data-theme="night"][data-family="method"] .reader-content .ill-figure img{background:var(--reader-panel)}
html[data-family="method"] .reader-content blockquote{border-left:0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--reader-accent) 7%,var(--reader-panel));color:var(--reader-ink)}
html[data-family="method"] .reader-content ol{counter-reset:none}
html[data-family="method"] .reader-content li{margin:.55em 0}
html[data-family="explainer"] .reader-content>p,html[data-family="method"] .reader-content>p{text-indent:0;margin-bottom:1.05em}
html[data-family="survey"] .reader-content>p{text-indent:2em}
html[lang="en"] .reader-content>p{text-indent:0;margin:0 0 1.05em}
html[lang="en"] .reader-paper h1{font-family:Georgia,'Iowan Old Style',serif;letter-spacing:-.012em}
html[lang="en"] .chapter-no{letter-spacing:.1em}
html[lang="en"] .chapter-link{font-size:13px;line-height:1.5}
@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;min-height:18px;line-height:18px;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%}
/* v5.73 手机端专项：刘海屏顶栏安全区，翻页视口同步扣除 */
.reader-bar{padding-top:env(safe-area-inset-top,0px)}
html[data-rmode="page"] .reader-shell{height:calc(100dvh - 58px - env(safe-area-inset-top,0px))}
@media(max-width:620px){.settings{top:auto;bottom:0;left:0;right:0;width:100%;border-radius:14px 14px 0 0;padding:18px 18px calc(18px + env(safe-area-inset-bottom));max-height:72vh;overflow:auto;box-shadow:0 -14px 42px rgba(17,22,20,.22)}.setting-row{grid-template-columns:56px minmax(0,1fr);margin:14px 0}.segments button,.stepper button{min-height:44px;font-size:14.5px}.swatch{width:44px;height:44px}}
@media(max-width:980px){html[data-rmode="page"] .reader-shell{height:calc(100dvh - 58px - env(safe-area-inset-top,0px));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}}
@media(max-width:620px){.reader-bar{height:calc(58px + env(safe-area-inset-top,0px))}.reader-bar-inner{grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:0 12px}.reader-bar-center,.reader-tools .reader-secondary{display:none}.reader-bar .icon-button{min-width:44px;min-height:44px;flex-shrink:0;white-space:nowrap}.reader-bar .icon-button.text{padding:0 8px}.reader-book strong{font-size:14px}.reader-book small{font-size:13px}.chapter-link{min-height:44px}.reader-floating button{min-height:44px}}