:root{color-scheme:dark;--navy:#062946;--deep:#031c32;--aqua:#36d6dd;--muted:#a7c7d7;--text:#f4fafc}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:68px}body{margin:0;background:var(--deep);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;padding-bottom:calc(76px + env(safe-area-inset-bottom))}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid var(--aqua);outline-offset:3px}button:disabled{cursor:default;opacity:.4}button[hidden]{display:none}.masthead{position:sticky;top:0;z-index:10;height:60px;background:#062946f5;backdrop-filter:blur(16px);display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid #ffffff14}.brand{font-size:18px;font-weight:700}.brand span{font-size:14px;font-weight:400;margin-left:14px;color:var(--muted)}.edition{font-size:12px;color:var(--muted);border:1px solid #83b3c940;padding:3px 8px;border-radius:20px}main{max-width:680px;margin:auto}.page{margin:0 0 16px;scroll-margin-top:0;background:var(--navy)}.page-image{display:block;width:100%;padding:0;border:0;background:var(--navy);position:relative;overflow:hidden;cursor:zoom-in}.page-image img{display:block;width:100%;height:auto}.page-image img.failed{min-height:280px}.image-failure{position:absolute;inset:0;display:grid;place-content:center;background:var(--navy);line-height:2;color:var(--muted)}.page-caption{display:flex;align-items:center;justify-content:space-between;padding:13px 20px;color:var(--muted);font-size:14px;border-bottom:1px solid #ffffff10}.page-caption span:last-child{color:var(--aqua);font-size:12px}.cover-actions{padding:22px 22px 20px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.cover-actions button{min-height:46px;border-radius:5px;border:1px solid #36d6dd80}.primary{background:var(--aqua);color:var(--deep);font-weight:700}.secondary{background:transparent;color:var(--aqua)}.cover-actions p{grid-column:1/-1;text-align:center;color:var(--muted);font-size:13px;margin:3px 0}.resume{grid-column:1/-1;background:#0b3e58;color:var(--text)}.toolbar{position:fixed;bottom:0;left:0;right:0;background:#062946f5;backdrop-filter:blur(18px);z-index:20;display:flex;align-items:center;justify-content:space-around;height:calc(70px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);border-top:1px solid #ffffff18}.toolbar button,.toolbar a{border:0;background:none;display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;min-width:88px;font-size:14px}.toolbar svg{width:20px;height:20px;fill:none;stroke:var(--aqua);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.toolbar strong{font-size:22px;font-weight:500}.toolbar #page-status{gap:0}.toolbar #page-status span{color:var(--muted);font-size:14px}.progress-track{position:absolute;top:-1px;left:0;right:0;height:2px;background:#153c53}#progress{height:100%;width:6.25%;background:var(--aqua);transition:width .2s}.contact{padding:44px 26px 25px;background:linear-gradient(150deg,#0c4865,var(--navy));margin-top:24px}.contact-kicker{color:var(--aqua);font-size:14px;margin:0 0 22px}.contact h1{font-size:40px;line-height:1.35;margin:0 0 22px;letter-spacing:2px}.invitation{line-height:1.9;color:#c4dce7}.contact dl{margin:32px 0 12px}.contact dl div{display:flex;min-height:52px;border-bottom:1px solid #ffffff20;align-items:center}.contact dt{width:110px;font-size:14px;color:var(--muted)}.contact dd{margin:0;flex:1;min-height:22px}.empty-note{font-size:13px;color:var(--muted)}.contact-buttons{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 40px}.contact-buttons button{background:transparent;border:1px solid #729daf;border-radius:4px;padding:11px 12px;font-size:14px}.contact footer{border-top:1px solid #ffffff20;padding-top:20px;font-size:14px;display:flex;justify-content:space-between;align-items:center}.contact footer button{background:none;color:var(--aqua);border:none;padding:10px}.directory{width:min(100%,600px);max-height:88dvh;margin:auto auto 0;padding:24px 24px calc(24px + env(safe-area-inset-bottom));border:1px solid #527d9350;border-radius:18px 18px 0 0;background:var(--navy);color:var(--text)}dialog::backdrop{background:#00111ccc;backdrop-filter:blur(4px)}.dialog-heading{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:15px}.dialog-heading p{font-size:13px;color:var(--muted);margin:0 0 7px}.dialog-heading h2{margin:0;font-size:26px}.close{background:transparent;border:0;font-size:32px;line-height:1;width:44px;height:44px;color:var(--muted)}.chapter{display:flex;align-items:center;gap:14px;text-align:left;width:100%;border:0;border-top:1px solid #ffffff17;background:transparent;padding:14px 0}.chapter .range{width:45px;flex-shrink:0;color:var(--aqua);font-size:13px}.chapter strong{display:block;font-size:16px;font-weight:500}.chapter small{display:block;color:var(--muted);font-size:12px;margin-top:5px;line-height:1.5}.chapter.current strong{color:var(--aqua)}.subchapters{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 0 16px 59px}.subchapters button{background:#0d3c55;border:0;border-radius:3px;padding:10px 6px;font-size:13px;text-align:left}.directory-contact{width:100%;background:var(--aqua);color:var(--deep);border:0;border-radius:5px;padding:14px;margin-top:10px}.viewer{position:fixed;inset:0;max-width:none;max-height:none;width:100%;height:100dvh;margin:0;padding:0;border:0;background:#020e18;color:var(--text);overflow:hidden}.viewer[open]{display:flex;flex-direction:column}.viewer-toolbar{flex-shrink:0;height:calc(62px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 10px 0;display:flex;align-items:center;justify-content:space-between;background:#062946;z-index:2}.viewer-toolbar p{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:0 8px}.viewer-toolbar #reset-zoom{font-size:13px;background:none;border:1px solid #47748b;border-radius:4px;padding:8px;white-space:nowrap}#zoom-stage{position:relative;flex:1;overflow:hidden;touch-action:none;min-height:0;cursor:grab}#zoom-stage:active{cursor:grabbing}#zoom-image{position:absolute;left:50%;top:50%;max-width:none;user-select:none;-webkit-user-select:none;pointer-events:none;transform-origin:center;will-change:transform}.viewer-bottom{flex-shrink:0;background:#062946;z-index:2;padding:10px 18px calc(12px + env(safe-area-inset-bottom));text-align:center}.viewer-bottom p{font-size:12px;color:var(--muted);margin:7px 0}.zoom-controls,.page-controls{display:flex;align-items:center;justify-content:center;gap:20px}.zoom-controls button{border:1px solid #47748b;border-radius:4px;background:transparent;width:44px;height:36px;font-size:23px}.zoom-controls span{font-size:14px;min-width:55px}.page-controls{margin-top:8px}.page-controls button{border:0;background:transparent;font-size:14px;padding:8px 12px;color:var(--aqua)}.page-controls span{font-size:13px;color:var(--muted);min-width:50px}#hd-status:empty{display:none}#toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%);padding:12px 20px;background:#174a62;border-radius:6px;z-index:100;display:none;max-width:90%;font-size:14px}@media(min-width:800px){main{padding-top:28px}.masthead{padding:0 max(28px,calc((100vw - 1000px)/2))}.page{box-shadow:0 10px 36px #0003;margin-bottom:28px}.toolbar{left:50%;right:auto;transform:translateX(-50%);width:680px;border:1px solid #ffffff18;border-radius:10px 10px 0 0}.contact{border-radius:6px}.contact h1{font-size:48px}.viewer-toolbar{padding-left:24px;padding-right:24px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.chapter-text{flex:1}.chapter img{object-fit:cover;border:1px solid #ffffff20;border-radius:2px}.viewer-toolbar #viewer-title{flex:1;text-align:center}
#hd-status,#hd-status:empty{display:block;min-height:16px;margin:4px 0 0}
/* Background music controls */
.header-actions{display:flex;align-items:center;gap:12px}.music-toggle{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;white-space:nowrap;padding:0 9px;background:transparent;border:1px solid #36d6dd50;border-radius:5px;color:var(--muted);font-size:14px}.music-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.music-toggle[data-playing="true"]{color:var(--aqua);border-color:#36d6dd90}.modal-actions{display:flex;align-items:center;gap:8px}.viewer-toolbar .music-toggle{padding:0 8px;min-height:38px}.viewer-toolbar .music-toggle svg{display:none}.directory .dialog-heading{gap:8px}.directory .modal-actions{gap:4px}.directory .music-toggle{font-size:13px;padding:0 7px}.directory .music-toggle svg{display:none}#background-music{display:none}@media(max-width:550px){.header-actions .edition{display:none}.masthead{padding:0 14px}.header-actions{gap:0}}@media(max-width:360px){.brand{font-size:16px}.brand span{font-size:12px;margin-left:8px}.music-toggle{padding:0 7px;gap:4px}.music-toggle svg{width:16px}.viewer-toolbar{padding-left:5px;padding-right:5px}.viewer-toolbar #reset-zoom{padding:7px 5px;font-size:12px}.viewer-toolbar .modal-actions{gap:4px}.viewer-toolbar .music-toggle{font-size:12px;padding:0 5px}}
@media(max-width:420px){.directory{padding-left:18px;padding-right:18px}.directory .dialog-heading h2{font-size:22px;white-space:nowrap}.directory .dialog-heading p{font-size:11px}.directory .dialog-heading>div:first-child{min-width:0;flex:1}.directory .modal-actions{flex-shrink:0}}