*{box-sizing:border-box}html,body{margin:0;height:100%;background:#f4efe4;color:#1b362c;font-family:system-ui,-apple-system,sans-serif}button,a{cursor:pointer}button{font:inherit}a{color:inherit}#readline{height:3px;background:#b49a60;width:0;position:fixed;top:0;left:0;z-index:8;transition:width .15s}.nkbar{display:flex;align-items:center;gap:clamp(6px,1.5vw,18px);padding:8px clamp(12px,3vw,46px);background:#133b2c;color:#f6ecd7;min-height:62px;box-shadow:0 2px 16px #18382b26}.nkbar button,.nkbar .nkbutton{border:1px solid #8aa3958f;background:none;color:inherit;border-radius:8px;padding:10px;font-size:12px;text-decoration:none}.nkbar button:hover,.nkbar a:hover{background:#ffffff18}.nkwordmark{text-decoration:none;font-size:21px;white-space:nowrap}.nkwordmark span{letter-spacing:.13em;font-size:14px;font-weight:800}.nktitle{min-width:0;flex:1;line-height:1.3}.nktitle strong{display:block;font:600 19px Georgia,serif;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.nktitle small{color:#c1cfc1;font-size:11px;display:block;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}#bookFrame{display:block;border:0;width:100%;height:calc(100dvh - 106px);background:#f6f1e8}.nkfooter{min-height:41px;display:flex;gap:16px;align-items:center;justify-content:space-between;padding:7px 24px;background:#efebdf;color:#47574d;font-size:12px}.nkfooter a{text-underline-offset:4px}.nktools,.nkchapters{position:fixed;z-index:6;top:68px;right:20px;width:min(360px,calc(100vw - 40px));background:#fffdf9;color:#173d2c;border:1px solid #d6cbb9;box-shadow:0 15px 40px #10291e36;border-radius:12px;padding:19px;display:grid;gap:13px}.nktools[hidden],.nkchapters[hidden]{display:none}.nktools input{width:100%;accent-color:#216844}.nktools label{font-size:12px;font-weight:650}.nkcontrols{display:flex;gap:8px}.nkcontrols button,.nkminor{padding:8px;background:#eee9df;border:1px solid #ccc0ac;border-radius:7px}.nkchapters{left:20px;right:auto;max-height:70dvh;overflow:auto}.nkchapters p{font-weight:bold;margin:0}.nkchapters a{display:block;padding:9px;border-bottom:1px solid #ece8df;font-size:13px;text-decoration:none}.nkchapters a:hover{color:#296947}.nkmessage{position:fixed;bottom:47px;left:50%;transform:translateX(-50%);z-index:9;max-width:95vw;color:#203e2c;background:#fefaf0;border-radius:12px;padding:9px 16px;box-shadow:0 8px 30px #0002;font-size:12px}.nkmessage:empty{display:none}@media(max-width:690px){.nkbar{gap:7px;padding:7px 9px}.nkbar button{padding:9px 8px}.nkbar button span{display:none}.nkbar .nkbutton{display:none}.nkwordmark span{font-size:11px}.nktitle strong{font-size:15px}.nktitle small{font-size:10px}.nkfooter{gap:6px;padding:6px 10px;font-size:10px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* v2.7 mobile ergonomics: comfortable touch targets, flexible footer and minimal reading mode */
.nkbar button{min-height:42px}.nkquiet{display:flex;align-items:center;gap:9px;font-size:13px;color:#26422f}.nkquiet input{accent-color:#216844;width:17px;height:17px}.nkquiet-active .nktitle small,.nkquiet-active .nkfooter #saveState{display:none}.nkquiet-active .nkbar .nkbutton{display:none}.nkquiet-active #bookFrame{height:calc(100dvh - 93px)}.nkfooter{flex-wrap:wrap}.nkfooter a{white-space:nowrap}@media(max-width:690px){.nkbar{min-height:56px}.nktitle strong{font-size:14px}.nkbar button{min-width:40px;min-height:44px}#bookFrame{height:calc(100dvh - 110px)}.nkfooter{min-height:52px}.nkwordmark{font-size:19px}}@media(min-width:691px){.nkquiet-active .nkbar{min-height:54px}} .nksave{white-space:nowrap}

.nkconflict{position:fixed;z-index:10;left:50%;top:50%;transform:translate(-50%,-50%);width:min(470px,calc(100vw - 30px));padding:25px;background:#fffdf7;color:#173c2c;border:2px solid #bba164;box-shadow:0 14px 55px #0004;border-radius:13px}.nkconflict[hidden]{display:none}.nkconflict h2{font:500 23px/1.3 Georgia,serif;margin:0}.nkconflict p{font-size:14px;line-height:1.6}.nkconflict>div{display:flex;gap:10px;flex-wrap:wrap}.nkconflict button{padding:12px;border:1px solid #55765c;border-radius:8px;background:#eaf0e7;color:#123b28;min-height:44px} .nknotes{position:fixed;z-index:6;top:68px;right:20px;width:min(380px,calc(100vw - 40px));max-height:78dvh;overflow:auto;background:#fffdf9;color:#173d2c;border:1px solid #d6cbb9;box-shadow:0 15px 40px #10291e36;border-radius:12px;padding:19px;display:grid;gap:10px}.nknotes[hidden]{display:none!important}.nknotes h2{font:500 25px Georgia,serif;margin:0}.nknotes>p{font-size:12px;color:#597066}.nknotes label{font-size:13px;font-weight:600}.nknotes textarea{font:14px/1.45 system-ui,sans-serif;padding:10px;border:1px solid #aebfaf;border-radius:8px;resize:vertical}.nknotes button{font:12px system-ui,sans-serif;padding:9px;border-radius:7px;background:#e9efe8;border:1px solid #b8c8b9;cursor:pointer}.nknotes article{border-top:1px solid #d7ddd6;padding:8px 0}.nknotes article p{font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere;margin:7px 0}.nknotes article button{margin-right:7px}.nknotes #notesList{max-height:40dvh;overflow:auto}

.nk-feedback{position:relative;font-size:12px}.nk-feedback summary{cursor:pointer}.nk-feedback>div{position:absolute;bottom:27px;left:0;background:#fffdf8;border:1px solid #bbbfaa;border-radius:10px;padding:10px;display:flex;gap:5px;box-shadow:0 7px 18px #0002}.nk-feedback button{min-width:34px;min-height:36px;border:1px solid #bccbbb;border-radius:6px;background:#eff3ea;color:#173d28}.nk-feedback small{display:block;font-size:10px;max-width:165px}.nk-feedback #comfortStatus{display:block;font-size:11px}