@import url("https://fonts.googleapis.com/css2?family=Zen+Maru+Gothic:wght@400;500;600;700&display=swap");
:root{--sidebar-width:240px;--content-max-width:1120px;--bg-paper:#faf8f4;--bg-paper-deep:#f3efe8;--card-bg:#fefdfb;--card-bg-hover:#fcfaf6;--text-primary:#5c5650;--text-secondary:#9a928a;--text-muted:#b5aea4;--border-warm:#e8e4dc;--border-soft:#f0ece6;--shadow-warm:rgba(92,86,80,.06);--shadow-card:0 2px 12px var(--shadow-warm),0 1px 3px rgba(92,86,80,.04);--sakura:#e8a0a8;--sakura-light:#f5d5d9;--sakura-glow:rgba(232,160,168,.18);--sakura-subtle:rgba(232,160,168,.35);--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--radius-pill:999px;color:var(--text-primary);background:var(--bg-paper);font-family:"Zen Maru Gothic","Hiragino Maru Gothic ProN","M PLUS Rounded 1c","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--text-primary);line-height:1.6;background-color:var(--bg-paper);background-image:radial-gradient(ellipse 120% 80% at 50% -20%,rgba(232,160,168,.045),transparent 50%),repeating-linear-gradient(38deg,transparent 0,transparent 9px,rgba(92,86,80,.008) 10px);background-attachment:fixed}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}a{color:inherit;text-decoration:none}[hidden]{display:none!important}.icon{display:inline-block;width:1em;height:1em;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.12em}
.app-shell{display:flex;min-height:100vh}.app-body{flex:1;display:flex;flex-direction:column;min-width:0;min-height:100vh;margin-left:var(--sidebar-width)}.main-content{flex:1;width:100%;max-width:var(--content-max-width);margin:0 auto;padding:32px 28px 40px}.mobile-bar{display:none}
.sidebar{position:fixed;inset:0 auto 0 0;z-index:40;display:flex;flex-direction:column;width:var(--sidebar-width);height:100vh;padding:24px 16px 14px;background:var(--card-bg);border-right:1px solid var(--border-warm);transition:transform .25s ease}.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 20px;margin-bottom:8px;border-bottom:1px solid var(--border-soft)}.brand__logo{display:grid;place-items:center;width:42px;height:36px;flex:0 0 auto;border:1px solid var(--border-warm);border-radius:10px;background:linear-gradient(145deg,var(--card-bg),var(--bg-paper-deep));color:var(--text-secondary);box-shadow:inset 0 0 0 1px rgba(255,255,255,.55)}.brand__conversion{width:31px;height:23px;stroke-width:1.55}.brand__conversion .brand__arrow{stroke:var(--sakura);stroke-width:2}.brand__name{display:block;font-size:20px;letter-spacing:.06em;line-height:1.2}.brand__tagline{display:block;margin-top:2px;font-size:10px;letter-spacing:.12em;color:var(--text-muted)}.side-nav{flex:1;min-height:0;overflow-y:auto}.side-nav__group{margin:15px 8px 6px;font-size:11px;font-weight:600;letter-spacing:.13em;color:var(--text-muted)}.side-nav__group:first-child{margin-top:0}.side-nav__link{display:flex;align-items:center;gap:8px;width:100%;padding:10px 12px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:14px;font-weight:600;letter-spacing:.04em;transition:.2s ease}.side-nav__link:hover{color:var(--text-primary);background:var(--bg-paper-deep)}.side-nav__link--active{color:var(--text-primary);background:var(--bg-paper);box-shadow:inset 0 0 0 1px var(--border-soft)}.side-nav__link--active:before{content:"";width:6px;height:6px;margin-left:-3px;border-radius:50%;background:var(--sakura);box-shadow:0 0 0 3px var(--sakura-glow)}.side-nav__link--external{font-size:13px}.side-nav__icon{width:18px;height:18px;text-align:center;color:var(--text-muted);font-weight:400}.side-nav__grow{flex:1}.sidebar__footer{margin-top:auto;padding-top:12px;border-top:1px solid var(--border-soft)}.sidebar__label{display:block;margin:0 4px 6px;color:var(--text-muted);font-size:11px;font-weight:600;letter-spacing:.1em}.language-btn{display:flex;align-items:center;gap:8px;width:100%;padding:9px 12px;border:1px solid var(--border-warm);border-radius:var(--radius-md);background:var(--bg-paper);color:var(--text-primary);font-size:13px}.language-btn strong{flex:1;text-align:left}.language-btn .icon{width:14px;height:14px}.privacy-note{display:flex;align-items:center;gap:5px;padding:9px 4px 0;font-size:10px;color:var(--text-muted)}.privacy-note .icon{width:13px;height:13px}.sidebar-backdrop{display:none;position:fixed;inset:0;z-index:30;background:rgba(92,86,80,.18)}
.converter-head{margin-bottom:20px;text-align:center}.converter-head h1{margin:0;font-size:24px;line-height:1.4;font-weight:700;letter-spacing:.12em}.converter-head p{margin:6px 0 0;font-size:13px;color:var(--text-secondary)}
.step-nav{display:flex;gap:4px;padding:4px;margin-bottom:24px;border:1px solid var(--border-warm);border-radius:var(--radius-pill);background:var(--bg-paper-deep)}.step-nav__item{flex:1;display:flex;align-items:center;justify-content:center;gap:9px;padding:10px 16px;border:0;border-radius:var(--radius-pill);background:transparent;color:var(--text-secondary);font-size:13px;font-weight:600;letter-spacing:.08em;transition:.2s ease}.step-nav__item:not(:disabled):hover{color:var(--text-primary);background:rgba(254,253,251,.6)}.step-nav__item--active{color:var(--text-primary);background:var(--card-bg);box-shadow:var(--shadow-card)}.step-nav__icon{width:16px;height:16px;color:var(--text-muted)}.step-nav__num{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--border-soft);color:var(--text-secondary);font-size:11px}.step-nav__item--active .step-nav__num{background:var(--sakura-light);color:#8a5a62}.step-view{animation:fade-in .25s ease}@keyframes fade-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}
.card{padding:24px;border:1px solid var(--border-warm);border-radius:var(--radius-lg);background:var(--card-bg);box-shadow:var(--shadow-card)}.upload-panel{padding:28px}.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:20px}.section-head--compact{margin-bottom:16px}.section-title{display:flex;align-items:center;gap:7px;margin:0 0 4px;color:var(--text-primary);font-size:16px;font-weight:700;letter-spacing:.1em}.section-title .icon{width:17px;height:17px;color:var(--text-secondary)}.section-desc{margin:0;color:var(--text-secondary);font-size:12px;letter-spacing:.03em}.tag,.pill{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border:1px solid var(--border-warm);border-radius:var(--radius-pill);background:var(--bg-paper-deep);color:var(--text-secondary);font-size:11px;font-weight:600;white-space:nowrap}.tag .icon{width:13px;height:13px}.muted{color:var(--text-secondary)}
.dropzone{display:flex;min-height:200px;padding:32px 24px;flex-direction:column;align-items:center;justify-content:center;gap:8px;border:2px dashed var(--border-warm);border-radius:var(--radius-lg);background:var(--bg-paper);cursor:pointer;transition:.2s ease}.dropzone:hover,.dropzone--active{border-color:var(--sakura-subtle);background:var(--card-bg-hover)}.dropzone--active{box-shadow:inset 0 0 0 1px var(--sakura-glow)}.dropzone--has-file{min-height:160px}.dropzone__input{display:none}.dropzone__icon{width:42px;height:42px;margin-bottom:4px;color:var(--text-muted);stroke-width:1.25}.dropzone__title{margin:0;font-size:15px;letter-spacing:.08em}.dropzone__hint{font-size:12px}.upload-meta{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-top:20px}.field-label{display:block;margin-bottom:6px;color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.06em}.encoding-pills{display:flex;flex-wrap:wrap;gap:6px}.encoding-pill{padding:7px 14px;border:1px solid var(--border-warm);border-radius:var(--radius-pill);background:transparent;color:var(--text-secondary);font-size:12px;font-weight:600}.encoding-pill:hover{color:var(--text-primary);border-color:var(--text-muted)}.encoding-pill--active{color:#8a5a62;border-color:var(--sakura);background:var(--sakura-light)}.file-meta{display:flex;gap:14px;font-size:12px;color:var(--text-secondary)}.file-meta strong{color:var(--text-primary)}.upload-actions{display:flex;justify-content:center;margin-top:24px}.primary-btn,.ghost-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:var(--radius-pill);font-weight:600;letter-spacing:.05em;transition:.18s ease}.primary-btn .icon,.ghost-btn .icon{width:15px;height:15px}.primary-btn{padding:11px 22px;border:0;background:var(--text-primary);color:var(--card-bg);font-size:14px}.primary-btn:not(:disabled):hover{background:#4a4540;box-shadow:0 4px 14px var(--shadow-warm)}.primary-btn--sakura{background:var(--sakura);color:#fff}.primary-btn--sakura:not(:disabled):hover{background:#df969f;box-shadow:0 4px 18px var(--sakura-glow)}.upload-actions__btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:200px;padding:13px 28px;font-size:15px}.upload-actions__btn .icon{width:17px;height:17px}.ghost-btn{padding:8px 14px;border:1px solid var(--border-warm);background:transparent;color:var(--text-primary);font-size:13px}.ghost-btn:not(:disabled):hover{border-color:var(--text-muted);background:var(--bg-paper-deep)}.status-bar{display:flex;align-items:center;gap:10px;margin-top:16px;padding:12px 16px;border:1px solid var(--border-warm);border-radius:var(--radius-md);background:var(--bg-paper-deep);font-size:13px}.status-bar--success{border-color:rgba(107,143,113,.25);background:#f6faf7;color:#6b8f71}.status-bar--error{border-color:rgba(196,92,92,.25);background:#fdf6f6;color:#c45c5c}
.parse-progress{margin-top:16px}.parse-progress__track{height:6px;overflow:hidden;border-radius:var(--radius-pill);background:var(--border-soft)}.parse-progress__fill{width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--sakura-light),var(--sakura));transition:width .35s ease}.parse-progress__label{display:block;margin-top:8px;font-size:11px;text-align:center;letter-spacing:.06em}
.chapter-columns{display:grid;grid-template-columns:340px 1fr;gap:16px;align-items:stretch}.chapter-panel,.detail-panel{height:min(68vh,600px);min-height:500px}.chapter-panel{display:flex;flex-direction:column}.chapter-list{flex:1;min-height:0;padding-right:4px;overflow-y:auto}.chapter-list::-webkit-scrollbar,.detail-preview::-webkit-scrollbar{width:4px}.chapter-list::-webkit-scrollbar-thumb,.detail-preview::-webkit-scrollbar-thumb{border-radius:4px;background:var(--border-warm)}.chapter-card{width:100%;margin-bottom:10px;padding:14px 16px 14px 12px;text-align:left;border:1px solid var(--border-soft);border-radius:var(--radius-md);background:var(--bg-paper);color:var(--text-primary);transition:.2s}.chapter-card:hover{border-color:var(--border-warm);background:var(--card-bg-hover)}.chapter-card--active{border-color:var(--sakura-subtle);background:var(--card-bg);box-shadow:0 0 0 1px var(--sakura-glow)}.chapter-card__head{display:flex;align-items:flex-start;gap:10px}.chapter-card__dot{width:7px;height:7px;margin-top:7px;flex:0 0 auto;border-radius:50%}.chapter-card--active .chapter-card__dot{background:var(--sakura);box-shadow:0 0 0 3px var(--sakura-glow)}.chapter-card__title-row{display:flex;align-items:center;gap:8px;flex:1;min-width:0}.chapter-card__index{flex:0 0 auto;color:var(--text-muted);font-size:11px;font-weight:700;letter-spacing:.06em}.chapter-card__title{min-width:0;margin:0;overflow:hidden;color:var(--text-primary);font-size:14px;font-weight:700;line-height:1.4;letter-spacing:.04em;text-overflow:ellipsis;white-space:nowrap}.chapter-card__preview{display:-webkit-box;margin:8px 0 0 17px;overflow:hidden;color:var(--text-secondary);font-size:12px;line-height:1.65;-webkit-box-orient:vertical;-webkit-line-clamp:2;white-space:normal}.chapter-card__meta{display:flex;align-items:center;gap:4px;margin:8px 0 0 17px;color:var(--text-muted);font-size:11px;white-space:nowrap}.chapter-card__sep{color:var(--text-muted)}.detail-panel{display:flex;flex-direction:column}.input,.textarea{width:100%;border:1px solid var(--border-warm);border-radius:var(--radius-md);background:var(--bg-paper);color:var(--text-primary)}.input{padding:10px 14px;font-size:14px}.textarea{padding:12px 14px;resize:vertical;font-size:13px}.input:focus,.textarea:focus{outline:0;border-color:var(--sakura-subtle);box-shadow:0 0 0 3px var(--sakura-glow);background:var(--card-bg)}.detail-field{margin-bottom:12px}.detail-field--grow{flex:1;display:flex;flex-direction:column;min-height:0;margin-bottom:0}.detail-actions{display:flex;flex-wrap:wrap;gap:8px}.detail-actions .input{flex:1;min-width:160px}.detail-actions .ghost-btn{gap:5px;white-space:nowrap}.detail-split-hint{margin:8px 0 0;font-size:12px;line-height:1.55}.detail-line-tag{margin-left:8px;color:var(--sakura);font-weight:600;letter-spacing:.02em}.detail-preview{flex:1;min-height:0;padding:8px;overflow-y:auto;border:1px solid var(--border-warm);border-radius:var(--radius-md);background:var(--bg-paper);font-size:13px;line-height:1.75}.detail-line{display:flex;gap:10px;width:100%;padding:4px 8px;border:0;border-radius:var(--radius-sm);background:transparent;color:inherit;text-align:left}.detail-line:hover{background:var(--bg-paper-deep)}.detail-line--active{background:var(--sakura-glow);box-shadow:inset 0 0 0 1px var(--sakura-subtle)}.detail-line__num{width:2.2em;flex:0 0 auto;color:var(--text-muted);font-size:11px;text-align:right}.detail-line__text{white-space:pre-wrap;word-break:break-word}.step-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:16px}
.settings-panel{margin-bottom:16px}.settings-panel__head{margin-bottom:0;padding-bottom:16px;border-bottom:1px solid var(--border-soft)}.settings-grid{display:block}.settings-block{padding:20px 0;border-bottom:1px solid var(--border-soft)}.settings-block h3,.toc-preview h3{margin:0 0 4px;font-size:14px;letter-spacing:.08em}.settings-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.settings-field--lang{grid-column:1/-1;max-width:320px}.settings-block--cover{display:block}.settings-block__head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;width:100%}.cover-clear{flex:0 0 auto}.cover-workspace{display:flex;align-items:center;gap:20px;margin-top:14px;padding:16px;border:1px solid var(--border-soft);border-radius:var(--radius-md);background:var(--bg-paper);transition:.18s ease}.cover-workspace:focus,.cover-workspace:focus-within{outline:0;border-color:var(--sakura-subtle);box-shadow:0 0 0 3px var(--sakura-glow);background:var(--card-bg)}.cover-zone{display:flex;align-items:center;justify-content:center;width:150px;height:210px;flex:0 0 auto;overflow:hidden;border:1px dashed var(--border-warm);border-radius:var(--radius-md);background:var(--card-bg);cursor:pointer;transition:.18s ease}.cover-zone:hover{border-color:var(--sakura);box-shadow:0 5px 18px var(--shadow-warm)}.cover-zone input{display:none}.cover-zone img{width:100%;height:100%;object-fit:cover}.cover-zone span{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px;color:var(--text-secondary);font-size:12px;text-align:center}.cover-tools{display:flex;align-content:center;align-items:flex-start;flex-wrap:wrap;gap:9px;max-width:430px}.cover-action{min-height:38px;background:var(--card-bg);white-space:nowrap}.cover-action__external{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.6}.cover-paste-hint{width:100%;margin:2px 0 0;color:var(--text-muted);font-size:12px;line-height:1.55}.rules-block{padding-top:20px;border-top:0}.rules-block summary{display:flex;justify-content:space-between;gap:10px;cursor:pointer;color:var(--text-secondary);font-size:13px}.rules-block summary strong{color:var(--text-primary)}.rules-block summary small{margin-left:8px;font-size:11px;font-weight:400}.rules-content{padding-top:16px}.rules-content .ghost-btn{margin-top:10px}.export-panel{padding:24px}.export-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--border-soft)}.export-stats{display:flex;align-items:center;gap:16px}.export-stats i{width:1px;height:32px;background:var(--border-warm)}.export-stat{display:flex;flex-direction:column;align-items:center}.export-stat strong{font-size:22px;line-height:1.15}.export-stat small{color:var(--text-muted);font-size:11px;letter-spacing:.1em}.toc-list{max-height:240px;padding-right:4px;overflow-y:auto}.toc-item{display:flex;align-items:center;gap:10px;margin-bottom:7px;padding:8px 12px;border:1px solid var(--border-soft);border-radius:var(--radius-md);background:var(--bg-paper);font-size:13px}.toc-item:before{content:"";width:7px;height:7px;flex:0 0 auto;border-radius:50%;background:var(--border-warm)}.toc-item span{flex:1}.toc-item small{color:var(--text-muted)}.export-cta{display:flex;flex-direction:column;align-items:center;gap:14px;margin-top:20px;text-align:center}.export-cta p{margin:0;font-size:12px}.export-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;max-width:320px;padding:16px 28px;border:1px solid var(--text-primary);border-radius:var(--radius-pill);background:var(--text-primary);color:var(--card-bg);font-size:15px;font-weight:700;letter-spacing:.08em}.export-btn:hover{background:#4a4540;box-shadow:0 6px 20px var(--shadow-warm)}.export-btn span{width:8px;height:8px;border-radius:50%;background:var(--sakura);box-shadow:0 0 0 3px var(--sakura-glow)}
.settings-field--lang select{padding-right:46px;-webkit-appearance:none;appearance:none;background-color:var(--bg-paper);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2378716b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m7 10 5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 18px center;background-size:14px 14px;cursor:pointer}.settings-field--lang select:focus{background-color:var(--card-bg)}
.site-ad{position:relative;display:flex;align-items:center;justify-content:center;width:100%;min-height:112px;margin-top:24px;overflow:hidden;text-align:center}.site-ad__label{position:absolute;top:6px;left:50%;z-index:1;transform:translateX(-50%);color:var(--text-muted);font-size:9px;letter-spacing:.16em;line-height:1}.site-ad .adsbygoogle{width:100%;min-height:90px}.site-ad--preview{border:1px dashed var(--border-warm);border-radius:var(--radius-md);background:rgba(254,253,251,.62)}.site-ad--preview .adsbygoogle{display:none!important}.site-ad--preview:after{content:"Google Ads · 正式域名下显示";color:var(--text-muted);font-size:11px;letter-spacing:.06em}.site-ad--unavailable{min-height:0;margin-top:0}.site-ad--unavailable>*{display:none!important}
.info-section{display:flex;gap:22px;margin-top:24px;padding:28px;border:1px solid var(--border-soft);border-radius:var(--radius-lg);background:rgba(254,253,251,.6)}.info-section__number{color:var(--sakura);font-size:12px;font-weight:700;letter-spacing:.15em}.info-section h2{margin:0 0 6px;font-size:16px;letter-spacing:.08em}.info-section p{margin:0;color:var(--text-secondary);font-size:13px}.info-section--compact{margin-top:12px;padding-block:20px}.site-footer{margin-top:auto;border-top:1px solid var(--border-warm);background:var(--card-bg)}.site-footer__inner{display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;max-width:var(--content-max-width);margin:auto;padding:24px 20px 28px;color:var(--text-secondary);font-size:12px}.site-footer__inner strong{color:var(--text-primary);letter-spacing:.06em}.site-footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 14px}.site-footer a:hover{color:var(--sakura)}.toast{position:fixed;left:50%;bottom:28px;z-index:80;min-width:180px;max-width:min(420px,calc(100vw - 32px));padding:11px 16px;transform:translate(-50%,20px);border:1px solid var(--border-warm);border-radius:var(--radius-pill);background:var(--text-primary);color:#fff;text-align:center;font-size:13px;opacity:0;pointer-events:none;transition:.2s ease}.toast--visible{transform:translate(-50%,0);opacity:1}
@media(max-width:899px){.sidebar{transform:translateX(-100%)}.sidebar--open{transform:translateX(0)}.sidebar-backdrop--open{display:block}.app-body{margin-left:0}.mobile-bar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:11px 16px;border-bottom:1px solid var(--border-warm);background:rgba(254,253,251,.94);backdrop-filter:blur(10px)}.mobile-bar__menu{display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--border-warm);border-radius:var(--radius-sm);background:var(--bg-paper);color:var(--text-secondary)}.mobile-bar__brand{display:flex;flex:1;flex-direction:column;line-height:1.25}.mobile-bar__brand small,.mobile-bar__privacy{color:var(--text-muted);font-size:10px;letter-spacing:.05em}.chapter-columns{grid-template-columns:300px 1fr}}
@media(max-width:720px){.main-content{padding:18px 14px 28px}.converter-head h1{font-size:21px}.card,.upload-panel{padding:18px}.step-nav__label{display:none}.step-nav__item{padding:9px 12px}.section-head{align-items:center}.dropzone{min-height:190px}.chapter-columns{grid-template-columns:1fr}.chapter-panel,.detail-panel{height:auto;min-height:auto}.chapter-list{max-height:330px}.detail-preview{min-height:300px;max-height:430px}.settings-grid,.settings-fields{grid-template-columns:1fr}.settings-field--lang{grid-column:auto}.cover-workspace{align-items:stretch;flex-direction:column}.cover-zone{width:128px;height:179px}.cover-tools{max-width:none}.rules-block summary small{display:none}.export-hero{align-items:center}.site-footer__inner{flex-direction:column;text-align:center}.info-section{padding:22px 18px}}

.side-nav__link svg.side-nav__icon{height:18px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.side-nav__external{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;color:var(--text-muted);opacity:.65;transition:.2s}
.side-nav__link--external:hover .side-nav__external{color:var(--text-secondary);opacity:1}

.upload-actions__btn:disabled{opacity:1;background:#f1dadd;color:#b89da2;box-shadow:none}
.upload-actions__btn:not(:disabled){background:#b85a68;color:#fff;box-shadow:0 5px 16px rgba(184,90,104,.22)}
.upload-actions__btn:not(:disabled):hover{background:#a94d5c;box-shadow:0 7px 20px rgba(169,77,92,.28);transform:translateY(-1px)}
.upload-actions__btn:not(:disabled):active{transform:translateY(0)}

.mobile-bar__menu .icon{width:18px;height:18px}
.mobile-bar__privacy{display:inline-flex;align-items:center;gap:4px}
.mobile-bar__privacy .icon{width:13px;height:13px}
.settings-block h3,.toc-preview h3{display:flex;align-items:center;gap:6px}
.settings-block h3 .icon,.toc-preview h3 .icon{width:15px;height:15px;color:var(--text-secondary)}
.cover-zone span .icon{width:27px;height:27px;color:var(--text-muted);stroke-width:1.35}
.text-button{display:inline-flex;align-items:center;gap:5px}
.text-button .icon{width:13px;height:13px}
.export-btn .icon{width:18px;height:18px;color:var(--sakura)}
.site-footer nav a,.site-footer__contact a{display:inline-flex;align-items:center;gap:4px}
.site-footer nav .icon,.site-footer__contact .icon{width:13px;height:13px;color:var(--text-muted)}
.brand__logo{width:46px;height:46px;border:0;background:transparent;box-shadow:none}.brand__logo img{display:block;width:46px;height:46px}.brand{gap:11px;padding-inline:6px}

.language-switch{position:relative}.language-btn strong{text-align:start}.language-menu{position:absolute;inset-inline:0;bottom:calc(100% + 7px);z-index:55;overflow:hidden;border:1px solid var(--border-warm);border-radius:var(--radius-md);background:var(--card-bg);box-shadow:0 12px 30px rgba(92,86,80,.14)}.language-menu ul{max-height:286px;margin:0;padding:6px;overflow-y:auto;list-style:none}.language-option{display:flex;align-items:center;gap:9px;width:100%;padding:8px 9px;border:0;border-radius:9px;background:transparent;color:var(--text-secondary);font-size:12px;text-align:start}.language-option span:nth-child(2){flex:1}.language-option b{color:var(--sakura);font-size:12px}.language-option:hover{background:var(--bg-paper-deep);color:var(--text-primary)}.language-option--active{background:var(--sakura-glow);color:var(--text-primary)}
.content-main{max-width:820px}.content-page{padding:32px}.content-page__head{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border-soft)}.content-page__title-row{display:flex;align-items:center;gap:10px}.content-page__title-row>.icon{width:22px;height:22px;color:var(--sakura);flex-shrink:0}.content-page__title{margin:0;color:var(--text-primary);font-size:22px;font-weight:700;letter-spacing:.08em}.content-page__subtitle{margin:10px 0 0;color:var(--text-secondary);font-size:14px;line-height:1.6}.content-page__body h2{margin:28px 0 10px;color:var(--text-primary);font-size:16px;font-weight:700;letter-spacing:.06em}.content-page__body h2:first-child{margin-top:0}.content-page__body h3{color:var(--text-primary)}.content-page__body p,.content-page__body li{color:var(--text-secondary);font-size:14px;line-height:1.85}.content-page__body p{margin:0 0 12px}.content-page__body ul{margin:8px 0 18px;padding-inline-start:24px}.content-page__body li{margin:5px 0}.content-page__body a{color:#a85c68;text-decoration:underline;text-underline-offset:3px}.content-page__body strong{color:var(--text-primary)}
.donate-greeting{color:var(--text-primary)!important;font-size:15px!important;font-weight:600}.donate-methods{display:grid;gap:16px;margin-bottom:8px}.donate-method{display:flex;flex-direction:column;align-items:center;margin-bottom:0;padding:20px 18px;text-align:center}.donate-method__title{margin:0 0 14px;color:var(--text-primary);font-size:15px;font-weight:700;letter-spacing:.06em}.donate-method__qr{padding:10px;border:1px solid var(--border-soft);border-radius:var(--radius-md);background:#fff;box-shadow:0 2px 12px rgba(92,86,80,.06)}.donate-method__qr img{display:block;width:220px;height:220px;object-fit:contain;border-radius:4px}.donate-method__placeholder{display:grid;place-items:center;width:220px;height:220px;border:1px dashed var(--border-warm);border-radius:8px;background:var(--bg-paper);color:var(--text-secondary)}.donate-method__placeholder strong{align-self:end}.donate-method__placeholder span{align-self:start;color:var(--text-muted);font-size:12px}.donate-method__desc{margin:14px 0 0!important;font-size:13px!important}.donate-kofi-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:42px;margin-top:18px;padding:10px 18px;border:1px solid var(--sakura-subtle);border-radius:var(--radius-pill);background:var(--sakura-glow);color:#8a5a62!important;font-size:13px;font-weight:700;text-decoration:none!important}.donate-kofi-btn .side-nav__external{color:currentColor}.donate-kofi-btn--placeholder{cursor:default;opacity:.72}.donate-kofi-btn small{font-weight:400}.donate-means{display:grid;gap:10px;padding:0!important;list-style:none}.donate-means__item{display:flex;align-items:flex-start;gap:14px;padding:16px}.donate-means__item>.icon{width:22px;height:22px;margin-top:2px;color:var(--sakura)}.donate-means__item strong{display:block;margin-bottom:3px}.donate-means__item p{margin:0!important;font-size:13px!important}
html[dir="rtl"] .sidebar{right:0;left:auto;border-right:0;border-left:1px solid var(--border-warm)}html[dir="rtl"] .app-body{margin-right:var(--sidebar-width);margin-left:0}html[dir="rtl"] .side-nav__link--active:before{margin-right:-3px;margin-left:0}html[dir="rtl"] .detail-line{text-align:right}html[dir="rtl"] .detail-line__num{text-align:left}
@media(min-width:640px){.donate-methods{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:899px){html[dir="rtl"] .sidebar{transform:translateX(100%)}html[dir="rtl"] .sidebar--open{transform:translateX(0)}html[dir="rtl"] .app-body{margin-right:0}}
@media(max-width:720px){.content-page{padding:20px}.content-page__title{font-size:20px}.donate-method__qr img,.donate-method__placeholder{width:min(220px,65vw);height:min(220px,65vw)}}

/* Keep the spacing rhythm in sync with the reference interface. */
body{background-image:radial-gradient(ellipse 120% 80% at 50% -20%,rgba(232,160,168,.04),transparent 50%),url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E")}
button:disabled{opacity:.55}
.sidebar{padding-bottom:20px}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav__group{margin-top:16px}
.side-nav__link{gap:6px}
.converter-head h1{letter-spacing:.08em}
.step-nav__item{gap:8px;letter-spacing:.06em}
.section-desc{margin:0 0 16px}
.section-head .section-title{margin:0}
.tag{font-weight:400}
.pill{font-weight:600}
.muted{font-size:13px}
.encoding-pills{margin-top:8px}
.primary-btn{letter-spacing:.06em}
.ghost-btn{letter-spacing:.04em}
.textarea{min-height:160px;line-height:1.7}
.detail-line__num{font-variant-numeric:tabular-nums;user-select:none}
.detail-line__text{flex:1;min-width:0}
.step-footer{flex-wrap:wrap;padding-top:4px}
.settings-panel__head{margin-bottom:8px}
.export-panel{margin-bottom:16px}
.export-hero{flex-wrap:wrap;margin-bottom:24px;padding-bottom:20px}
.export-stat{gap:2px}
.toc-preview{margin-bottom:16px}
.toc-list{max-height:280px}
.export-cta{margin-top:0}
.export-cta .muted{max-width:360px}
.site-footer__inner{gap:12px}
.site-footer__inner>span:first-child,.site-footer nav a{font-size:13px}
.site-footer nav a{letter-spacing:.04em;transition:color .2s}
.site-footer__friends{display:flex;align-items:center;gap:18px;width:100%;max-width:var(--content-max-width);margin:auto;padding:20px 20px 17px;border-bottom:1px solid var(--border-soft);color:var(--text-secondary)}
.site-footer__friends-title{display:inline-flex;align-items:center;flex:0 0 auto;color:var(--text-primary);font-size:13px;letter-spacing:.08em}
.site-footer__friend-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.site-footer__friend-links a{display:inline-flex;align-items:center;padding:6px 11px;border:1px solid var(--border-soft);border-radius:var(--radius-pill);background:var(--bg-paper);color:var(--text-secondary);font-size:12px;letter-spacing:.03em;transition:border-color .18s ease,background .18s ease,color .18s ease,transform .18s ease}.site-footer__friend-links a:hover{transform:translateY(-1px);border-color:var(--sakura-subtle);background:var(--sakura-glow);color:#8a5a62}
.rules-label-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:7px}.rules-label-row .field-label{margin:0}.rules-content .rules-preset{margin:0;padding:6px 11px;flex:0 0 auto;font-size:12px}.rules-actions{display:flex;margin-top:10px}.rules-actions .ghost-btn{margin:0}
.volume-rules{margin-top:16px;padding-top:16px;border-top:1px solid var(--border-soft)}.rules-toggle{display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;color:var(--text-secondary);font-size:12px;cursor:pointer}.rules-toggle input{width:15px;height:15px;margin:0;accent-color:var(--sakura)}.rules-help{margin:7px 2px 0;color:var(--text-muted);font-size:11px;line-height:1.55}.chapter-panel__tools{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap}.chapter-volume-mode{display:inline-flex;align-items:center;gap:5px;padding:4px 9px;border:1px solid var(--sakura-light);border-radius:var(--radius-pill);background:var(--card-bg);color:#8a5a62;font-size:11px;font-weight:600;white-space:nowrap}.chapter-volume-mode:hover{border-color:var(--sakura);background:var(--sakura-light)}.chapter-volume-mode .icon{width:13px;height:13px}.volume-heading{position:sticky;top:0;z-index:1;display:flex;align-items:center;gap:7px;width:100%;margin:4px 0 10px;padding:8px 10px;text-align:left;border:1px solid var(--sakura-light);border-radius:var(--radius-md);background:rgba(254,253,251,.96);color:var(--text-primary);box-shadow:0 3px 10px rgba(92,86,80,.035);font-size:12px}.volume-heading:hover{border-color:var(--sakura);background:var(--card-bg)}.volume-heading__book{width:15px;height:15px;flex:0 0 auto;fill:none;stroke:var(--sakura);stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.volume-heading strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.volume-heading small{margin-left:auto;color:var(--text-muted);white-space:nowrap}.volume-heading__chevron{width:15px;height:15px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}.volume-heading__chevron--collapsed{transform:rotate(-90deg)}.volume-heading--unvolumed{border-color:var(--border-soft);color:var(--text-secondary)}.volume-heading--unvolumed .volume-heading__book{stroke:var(--text-muted)}.toc-volume{display:flex;align-items:center;gap:10px;width:100%;margin:12px 0 7px;padding:8px 12px;text-align:left;border:0;border-left:3px solid var(--sakura);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--bg-paper-deep);color:var(--text-primary);font-size:13px}.toc-volume:hover{background:var(--sakura-glow)}.toc-volume strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc-volume small{margin-left:auto;color:var(--text-muted);white-space:nowrap}.toc-volume--unvolumed{border-left-color:var(--border-warm);color:var(--text-secondary)}.toc-item--nested{margin-left:22px}.toc-item--nested:before{width:6px;height:6px;background:var(--sakura-light)}
.cover-tools{flex-direction:column;flex-wrap:nowrap;gap:10px;max-width:520px}.cover-search{width:100%}.cover-search__label{display:inline-flex;align-items:center;gap:6px;margin-bottom:8px;color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.06em}.cover-search__label .icon{width:14px;height:14px}.cover-search__links{display:flex;flex-wrap:wrap;gap:6px}.cover-search__link{gap:4px;min-height:36px;padding:7px 8px;background:var(--card-bg);font-size:12px}.cover-search__link>.icon{width:13px;height:13px;color:var(--text-muted)}.cover-search__link .cover-action__external{width:10px;height:10px}.cover-tools>.cover-action{margin-top:1px}
.cover-mode-switch{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:14px}.cover-mode{display:flex;align-items:center;gap:10px;min-width:0;padding:12px 14px;border:1px solid var(--border-soft);border-radius:var(--radius-md);background:var(--bg-paper);color:var(--text-secondary);text-align:left;transition:border-color .18s ease,background .18s ease,box-shadow .18s ease,transform .18s ease}.cover-mode:hover{border-color:var(--border-warm);background:var(--card-bg);transform:translateY(-1px)}.cover-mode>.icon{width:20px;height:20px;flex:0 0 auto;color:var(--text-muted)}.cover-mode>span{display:flex;min-width:0;flex-direction:column;gap:2px}.cover-mode strong{color:var(--text-primary);font-size:13px;letter-spacing:.04em}.cover-mode small{overflow:hidden;color:var(--text-muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}.cover-mode--active{border-color:#d2aa4f;background:linear-gradient(135deg,#fffaf0,#fff3ce);box-shadow:0 4px 14px rgba(157,111,35,.1)}.cover-mode--active>.icon{color:#ad7724}.cover-workspace{--cover-preview-border:rgba(151,107,41,.32);--cover-preview-border-hover:rgba(151,107,41,.45);--cover-preview-bg:linear-gradient(145deg,#fff6cf,#e3b650);--cover-preview-shadow:rgba(112,76,31,.12);--cover-preview-shadow-hover:rgba(112,76,31,.15);--cover-preview-text:#795b2d;align-items:stretch;background:linear-gradient(135deg,rgba(255,251,239,.86),rgba(250,245,233,.72))}.cover-workspace[data-cover-theme="sunrise"]{--cover-preview-border:rgba(47,122,96,.38);--cover-preview-border-hover:rgba(38,116,89,.58);--cover-preview-bg:linear-gradient(145deg,#effbf5,#65ad93);--cover-preview-shadow:rgba(39,111,86,.13);--cover-preview-shadow-hover:rgba(39,111,86,.18);--cover-preview-text:#2f6c58}.cover-workspace[data-cover-theme="modern"]{--cover-preview-border:rgba(63,87,139,.4);--cover-preview-border-hover:rgba(51,75,130,.6);--cover-preview-bg:linear-gradient(145deg,#edf4ff,#5873a8);--cover-preview-shadow:rgba(52,75,126,.14);--cover-preview-shadow-hover:rgba(52,75,126,.2);--cover-preview-text:#405a88}.cover-zone{position:relative;width:168px;height:235px;border:1px solid var(--cover-preview-border);background:var(--cover-preview-bg);box-shadow:0 8px 24px var(--cover-preview-shadow);cursor:default}.cover-zone:after{position:absolute;inset:7px;border:1px solid rgba(255,255,255,.48);border-radius:calc(var(--radius-md) - 4px);content:"";pointer-events:none}.cover-zone:hover{border-color:var(--cover-preview-border-hover);box-shadow:0 10px 28px var(--cover-preview-shadow-hover)}.cover-zone img{position:relative;z-index:1}.cover-zone span{position:relative;z-index:1;color:var(--cover-preview-text)}.cover-tools{max-width:none;flex:1}.cover-panel{display:flex;width:100%;min-width:0;flex-direction:column;align-items:flex-start;gap:11px}.cover-panel[hidden]{display:none}.cover-panel__label{color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.06em}.cover-style-grid{display:grid;width:100%;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.cover-style{display:flex;min-width:0;flex-direction:column;gap:6px;padding:7px;border:1px solid var(--border-soft);border-radius:11px;background:var(--card-bg);color:var(--text-secondary);font-size:11px;text-align:left;transition:.18s ease}.cover-style:hover{border-color:#d8b35d;transform:translateY(-1px)}.cover-style i{position:relative;display:block;width:100%;height:55px;overflow:hidden;border-radius:7px;background:linear-gradient(145deg,#fff5c8,#d5a042);box-shadow:inset 0 0 0 1px rgba(99,65,21,.1)}.cover-style i:after{position:absolute;inset:7px;border:1px solid rgba(83,52,19,.3);content:""}.cover-style--classic i:before{position:absolute;top:-17px;left:-17px;width:56px;height:56px;border-radius:50%;background:rgba(255,252,234,.72);content:""}.cover-style--sunrise i{background:radial-gradient(circle at 50% 34%,#f5fff9 0 14%,rgba(185,231,206,.8) 15% 33%,transparent 34%),linear-gradient(#eefbf4,#58a88d)}.cover-style--sunrise i:before{position:absolute;right:12px;bottom:12px;left:12px;height:1px;background:rgba(23,87,69,.32);box-shadow:0 7px rgba(23,87,69,.22),0 14px rgba(23,87,69,.13);content:""}.cover-style--sunrise i:after{border-color:rgba(21,77,63,.32)}.cover-style--modern i{background:linear-gradient(145deg,#edf4ff,#45639b)}.cover-style--modern i:before{position:absolute;top:0;right:0;width:45%;height:58%;background:rgba(35,38,88,.2);clip-path:polygon(30% 0,100% 0,100% 100%,0 72%);content:""}.cover-style--modern i:after{border-color:rgba(24,42,79,.34)}.cover-style--active{border-color:#bf8b2f;background:#fff8e5;color:#77531e;box-shadow:0 0 0 2px rgba(208,166,72,.18)}.cover-style--sunrise.cover-style--active{border-color:#579c83;background:#eff9f4;color:#2f6c58;box-shadow:0 0 0 2px rgba(79,156,131,.17)}.cover-style--modern.cover-style--active{border-color:#607aa8;background:#f1f5fc;color:#405a88;box-shadow:0 0 0 2px rgba(75,98,151,.16)}.cover-auto-hint{margin:0;color:var(--text-muted);font-size:11px;line-height:1.6}.cover-upload-button{display:inline-flex;cursor:pointer}.cover-workspace--upload .cover-zone{border-color:var(--border-warm);border-style:dashed;background:var(--card-bg);box-shadow:none}.cover-workspace--upload .cover-zone:after{display:none}.cover-workspace--upload .cover-zone span{color:var(--text-muted)}
.chapter-panel,.detail-panel{min-width:0}.chapter-card__preview{overflow-wrap:anywhere}
@media(max-width:720px){.main-content{padding:16px 14px 28px}.step-nav__item{padding:10px 12px}.section-head,.export-hero{align-items:flex-start}.chapter-list{overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.detail-actions .input{min-width:0;flex-basis:100%}.detail-actions .ghost-btn{flex:1 1 calc(50% - 4px);padding-inline:10px;white-space:normal}.detail-preview{min-height:240px;max-height:none;overflow-y:visible}.step-footer>*{flex:1 1 100%}}
@media(max-width:720px){.cover-mode-switch{grid-template-columns:1fr}.cover-mode small{white-space:normal}.cover-workspace{align-items:center}.cover-zone{width:150px;height:210px}.cover-tools{width:100%}.cover-style-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.cover-style{padding:5px}.cover-style i{height:46px}.cover-style span{text-align:center}}
@media(max-width:720px){.site-footer__friends{align-items:flex-start;flex-direction:column;gap:10px;padding:18px 16px 16px}.site-footer__friend-links{width:100%;gap:7px}.site-footer__friend-links a{flex:1 1 auto;justify-content:center}}

/* Online reading shares the confirmed chapter result with EPUB export. */
.chapter-confirm-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px;min-width:0}.chapter-confirm-actions>button{min-height:44px}
.reader-entry-btn{border-color:#4d7c62;background:#4d7c62;color:#fff}.reader-entry-btn:not(:disabled):hover{border-color:#3f6952;background:#3f6952;box-shadow:0 4px 14px rgba(63,105,82,.16)}.reader-entry-btn:focus-visible{outline:3px solid rgba(77,124,98,.35);outline-offset:3px}
@media(max-width:720px){.chapter-confirm-actions{width:100%}.chapter-confirm-actions>button{flex:1;min-width:0;padding-inline:12px}}