:root{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;font-synthesis:none;color-scheme:dark;--bg:#151a24;--panel:#1c2330;--panel2:#242d3c;--ink:#eae9e6;--muted:#a2aab8;--border:rgba(204,212,227,.12);--accent:#c9ad83;--accentInk:#202029;--shadow:0 22px 65px rgba(0,0,0,.26);--reader-bg:#191c23;--reader-ink:#e8e4dc}
body[data-theme="light"]{color-scheme:light;--bg:#f7f6f3;--panel:#fff;--panel2:#eeedea;--ink:#232631;--muted:#717580;--border:rgba(35,38,49,.11);--accent:#947657;--accentInk:#fff;--shadow:0 22px 65px rgba(0,0,0,.08);--reader-bg:#fff;--reader-ink:#262525}
body[data-theme="sepia"]{color-scheme:light;--bg:#ece1cb;--panel:#f5ebd7;--panel2:#ebddc4;--ink:#40342a;--muted:#867562;--border:rgba(94,70,45,.16);--accent:#896641;--accentInk:#fff;--shadow:0 22px 65px rgba(74,57,40,.11);--reader-bg:#f4ead4;--reader-ink:#453725}
*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--bg);color:var(--ink);transition:background .18s ease,color .18s ease}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,select:focus-visible,input:focus-visible,.reader-viewport:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button:disabled{opacity:.45;cursor:not-allowed}[hidden]{display:none!important}.svg-sprite{width:0;height:0;position:absolute;overflow:hidden}.icon{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex:none}.visually-hidden{position:absolute;overflow:hidden;clip:rect(0,0,0,0);width:1px;height:1px;white-space:nowrap}.screen{min-height:100vh;min-height:100dvh}.library-screen{max-width:1120px;margin:auto;padding:50px clamp(18px,5vw,70px) 24px}.library-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:67px}.brand{display:flex;gap:15px;align-items:center}.brand-logo{width:44px;height:44px;display:grid;place-items:center;font-size:24px;font-family:serif;border:1px solid var(--accent);color:var(--accent);border-radius:12px}.eyebrow{font-family:system-ui,sans-serif;letter-spacing:.17em;font-size:10px;font-weight:700;color:var(--accent);margin:0 0 5px}.brand h1{margin:0;font-size:27px;font-weight:650;letter-spacing:.13em}.brand-period{color:var(--accent)}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:0;border-radius:12px;color:var(--ink);background:transparent;flex-shrink:0}.icon-button:hover{background:var(--panel2)}.icon-button.outline{border:1px solid var(--border);background:var(--panel)}.library-hero{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:69px}.library-hero h2{font-size:clamp(27px,3.4vw,40px);font-weight:600;letter-spacing:.045em;line-height:1.65;margin:10px 0 13px}.subtle{color:var(--muted);font-size:13px}.primary-button,.secondary-button,.danger-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:12px;border:1px solid transparent;padding:13px 20px;font-size:14px;font-weight:700;white-space:nowrap}.primary-button{background:var(--accent);color:var(--accentInk);box-shadow:0 8px 20px rgba(0,0,0,.08)}.primary-button:hover{filter:brightness(1.08)}.secondary-button{background:var(--panel2);color:var(--ink);border:1px solid var(--border)}.danger-button{background:#a64343;color:#fff}.library-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.section-title{display:flex;align-items:center;gap:12px}.section-title h2{font-size:22px;font-weight:650;margin:0}.count-pill{padding:4px 10px;border-radius:20px;font-size:12px;color:var(--muted);border:1px solid var(--border)}.library-controls{display:flex;gap:10px}.search-field{display:flex;align-items:center;gap:9px;padding:0 12px;border-radius:10px;border:1px solid var(--border);background:var(--panel)}.search-field .icon{width:16px;height:16px;color:var(--muted)}.search-field input{height:40px;width:155px;background:transparent;color:var(--ink);border:0;outline:none;font-size:13px;min-width:0}.control-select{background:var(--panel);color:var(--ink);border:1px solid var(--border);padding:0 10px;border-radius:10px;font-size:12px;max-width:145px}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.book-card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:20px;cursor:pointer;display:flex;flex-direction:column;min-height:193px;transition:transform .15s,border-color .15s,box-shadow .15s;text-align:left;color:var(--ink);min-width:0}.book-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:var(--shadow)}.book-card-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.book-symbol{width:31px;height:38px;border:1px solid var(--border);background:var(--panel2);border-radius:4px 7px 7px 4px;display:grid;place-items:center;color:var(--accent)}.book-symbol .icon{width:17px;height:17px}.book-meta{font-size:11px;color:var(--muted)}.book-title{font-size:16px;line-height:1.5;font-weight:640;margin:13px 0 8px;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-detail{font-size:11px;color:var(--muted);margin-top:auto}.card-progress{height:3px;background:var(--panel2);border-radius:6px;margin-top:16px;overflow:hidden}.card-progress span{display:block;height:100%;background:var(--accent)}.empty-state{text-align:center;margin:68px auto 80px;max-width:390px}.empty-mark{width:74px;height:74px;border-radius:23px;border:1px solid var(--border);display:grid;place-items:center;margin:auto;background:var(--panel);color:var(--accent)}.empty-mark .icon{width:33px;height:33px}.empty-state h3{font-size:20px;margin:20px 0 7px}.empty-state p{font-size:13px;line-height:1.8;color:var(--muted);margin:0 0 20px}.library-footer{color:var(--muted);font-size:11px;text-align:center;margin-top:60px}
.reader-screen{position:fixed;inset:0;min-height:0;background:var(--reader-bg);color:var(--reader-ink)}.reader-viewport{position:absolute;inset:0;overflow-y:auto;overscroll-behavior-y:contain;scrollbar-gutter:stable;scroll-behavior:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y}.reader-content{padding:calc(env(safe-area-inset-top) + 110px) var(--side-padding,26px) calc(env(safe-area-inset-bottom) + 135px);width:100%;max-width:var(--text-width,780px);margin:0 auto;white-space:pre-wrap;overflow-wrap:anywhere;line-break:strict;font-family:var(--reading-font,serif);font-size:var(--reading-size,18px);line-height:var(--reading-line,1.9);letter-spacing:var(--reading-letter,.025em);font-weight:400;min-height:100%;tab-size:4}.reader-content span{white-space:inherit}.reader-chrome{position:absolute;inset:0;pointer-events:none;transition:opacity .2s ease,visibility .2s;z-index:4}.reader-chrome.hide{opacity:0;visibility:hidden}.reader-topbar,.reader-bottombar{pointer-events:auto;position:absolute;left:0;right:0;background:var(--reader-bg)}.reader-topbar{top:0;padding:calc(env(safe-area-inset-top) + 7px) 16px 12px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border)}.reader-heading{flex:1;min-width:0;text-align:center}.reader-overline{font-size:9px;letter-spacing:.18em;color:var(--accent);margin-bottom:3px}.reader-title{font-size:13px;font-weight:600;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.reader-bottombar{bottom:0;padding:13px max(17px,env(safe-area-inset-right)) calc(env(safe-area-inset-bottom) + 10px) max(17px,env(safe-area-inset-left));border-top:1px solid var(--border)}.read-progress-row{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);max-width:680px;margin:auto}.progress-track{height:3px;border-radius:8px;background:var(--panel2);max-width:680px;margin:8px auto 8px;overflow:hidden}.progress-track span{display:block;width:0;height:100%;background:var(--accent);transition:width .12s}.reader-actions{max-width:510px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:4px}.reader-action{font-size:16px;color:var(--reader-ink)}.nav-separator{height:23px;width:1px;background:var(--border);margin:0 3px}.overlay{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:18px}.backdrop{position:absolute;inset:0;background:rgba(0,0,0,.62);backdrop-filter:blur(3px)}.sheet{z-index:1;position:relative;background:var(--panel);border:1px solid var(--border);border-radius:20px;width:min(100%,475px);max-height:min(82vh,760px);display:flex;flex-direction:column;box-shadow:var(--shadow);overflow:hidden}.sheet-header{padding:23px 24px 16px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border)}.sheet-header h2{margin:0;font-size:22px;font-weight:650}.sheet-body{padding:20px 24px 25px;overflow-y:auto;overscroll-behavior:contain}.setting-group{margin-bottom:25px}.setting-group:last-child{margin-bottom:0}.setting-heading{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:650;margin-bottom:12px}.setting-value{color:var(--muted);font-variant-numeric:tabular-nums}.segmented{display:flex;gap:6px}.segmented button{flex:1;border:1px solid var(--border);background:var(--panel2);padding:10px 7px;border-radius:9px;color:var(--ink);font-size:13px}.segmented button.active{background:var(--accent);border-color:var(--accent);color:var(--accentInk);font-weight:650}.range-setting{width:100%;accent-color:var(--accent);height:24px}.setting-hint{font-size:12px;line-height:1.8;color:var(--muted)}.dialog-input{display:block;width:100%;border-radius:9px;background:var(--panel2);border:1px solid var(--border);color:var(--ink);padding:11px 12px;font-size:14px;margin-bottom:10px}.button-row{display:flex;align-items:center;gap:9px;margin:10px 0}.button-row>button{flex:1}.sheet-separator{height:1px;background:var(--border);margin:18px 0}.sheet-link{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;padding:12px 3px;border:0;border-bottom:1px solid var(--border);text-align:left;color:var(--ink);background:transparent;font-size:14px}.sheet-link .icon{width:18px;height:18px;color:var(--muted)}.sheet-link:hover{color:var(--accent)}.bookmark-item{display:flex;align-items:start;gap:8px;border-bottom:1px solid var(--border);padding:12px 0}.bookmark-open{flex:1;min-width:0;text-align:left;border:0;background:none;color:var(--ink);font-size:13px;line-height:1.65}.bookmark-open small{display:block;color:var(--muted);font-size:11px;margin-bottom:4px}.bookmark-item .icon-button{width:34px;height:34px}.toast{position:fixed;z-index:90;bottom:calc(env(safe-area-inset-bottom) + 24px);left:50%;transform:translate(-50%,15px);padding:12px 17px;background:#343a44;color:#fff;border:1px solid #6d7380;border-radius:13px;font-size:13px;max-width:min(90vw,440px);width:max-content;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.show{opacity:1;transform:translate(-50%,0)}.data-warning{padding:13px;border:1px solid var(--border);background:var(--panel2);border-radius:12px;margin-top:15px}.data-warning p{margin:0;font-size:12px;line-height:1.75;color:var(--muted)}
@media(max-width:720px){.library-screen{padding:24px 19px 22px}.library-header{margin-bottom:47px}.library-hero{display:block;margin-bottom:55px}.library-hero h2{font-size:26px;line-height:1.65}.library-hero .primary-button{margin-top:19px;width:100%}.library-toolbar{display:block}.section-title{margin-bottom:15px}.library-controls{width:100%}.search-field{flex:1}.search-field input{width:100%}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.book-card{padding:15px;min-height:190px}.book-title{font-size:14px}.reader-content{--side-padding:22px}.reader-topbar{padding-left:8px;padding-right:8px}.reader-bottombar{padding-left:9px;padding-right:9px}.reader-actions .icon-button{width:40px}.sheet{align-self:flex-end;border-radius:20px 20px 0 0;max-height:min(87dvh,840px);width:100%}.overlay{padding:0}.sheet-body{padding-bottom:calc(env(safe-area-inset-bottom) + 28px)}.toast{bottom:calc(env(safe-area-inset-bottom) + 18px)}}
@media(max-width:350px){.book-grid{grid-template-columns:1fr}.brand h1{font-size:23px}.control-select{max-width:128px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}