:root{--bg:#ffffff;--fg:#111111;--muted:#6b7280;--muted-2:#9ca3af;--line:#e5e7eb;--surface:#f6f6f7;--surface-2:#efeff1;--accent:#111111;--accent-fg:#ffffff;--danger:#b91c1c;--radius:12px;--radius-sm:8px;--frame-w:420px;--header-h:56px;--footer-h:64px;font-synthesis:none}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;color:var(--fg);background:#d9d9dc;-webkit-font-smoothing:antialiased;line-height:1.6}a{color:inherit}.frame{position:relative;max-width:var(--frame-w);min-height:100dvh;margin:0 auto;border-left:1px solid var(--line);border-right:1px solid var(--line);flex-direction:column;overflow:hidden}.frame,.header{background:var(--bg);display:flex}.header{height:var(--header-h);flex:0 0 var(--header-h);align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid 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var(--line);border-radius:999px;font-size:11px;color:var(--muted);padding:4px 10px;cursor:pointer;font-family:inherit}.main{flex:1 1 auto;overflow-y:auto;padding:16px 16px calc(var(--footer-h) + 24px + env(safe-area-inset-bottom))}.main.no-tabbar{padding-bottom:calc(24px + env(safe-area-inset-bottom))}.page-title{font-size:20px;font-weight:700;margin:4px 0 16px}.section-label{font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin:24px 0 10px}.tabbar{position:absolute;bottom:0;left:0;right:0;height:calc(var(--footer-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--bg);border-top:1px solid var(--line);display:flex;align-items:stretch;z-index:20}.tabbar a{flex:1 1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;text-decoration:none;color:var(--muted-2);font-size:10px;font-weight:600}.tabbar a.active{color:var(--fg)}.tabbar a .ic{width:24px;height:24px}.tabbar a .ic svg{width:100%;height:100%;display:block}.tabbar a.scan{color:var(--accent-fg)}.tabbar a.scan .ic{width:50px;height:50px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-top:-18px;box-shadow:0 4px 12px rgba(0,0,0,.25)}.tabbar a.scan .ic svg{width:26px;height:26px}.tabbar a.scan span{color:var(--muted);margin-top:2px}.searchbar{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:9px 14px;margin-bottom:14px}.searchbar svg{width:18px;height:18px;color:var(--muted);flex:0 0 auto}.searchbar input{border:none;background:none;outline:none;width:100%;font-size:14px;color:var(--fg);font-family:inherit}.searchbar input::placeholder{color:var(--muted-2)}.list-controls{display:flex;gap:8px;align-items:center;margin-bottom:14px}.list-controls .searchbar{flex:1 1;margin-bottom:0;min-width:0}.sort-select{flex:0 0 auto;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:9px 28px 9px 12px;font-size:13px;color:var(--fg);font-family:inherit;outline:none;cursor:pointer;-moz-appearance:none;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/></svg>");background-repeat:no-repeat;background-position:right 10px center}.chips{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.chip{font-size:12px;font-weight:600;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--bg);color:var(--muted);cursor:pointer;font-family:inherit}.chip.active{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.book-list{display:flex;flex-direction:column;gap:12px}.book-card{display:flex;gap:12px;padding:12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);text-decoration:none;color:inherit;text-align:left}.book-card:active{background:var(--surface)}.cover{flex:0 0 auto;width:56px;height:80px;background:linear-gradient(135deg,#efeff1,#dfdfe3);border:1px solid var(--line);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:9px;color:var(--muted-2);text-align:center;padding:4px;overflow:hidden;white-space:pre-line;line-height:1.3}.cover img{width:100%;height:100%;object-fit:cover}.cover.lg{width:110px;height:158px;font-size:11px}.book-meta{flex:1 1 auto;min-width:0}.book-meta .title{font-weight:700;font-size:15px;line-height:1.4;margin:0 0 4px}.book-meta .author{font-size:12px;color:var(--muted);margin:0 0 8px}.badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;border:1px solid var(--fg)}.badge.available{background:var(--fg);color:var(--accent-fg)}.badge.on-loan{background:var(--bg);color:var(--muted);border-color:var(--line)}.badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px 18px;border-radius:var(--radius-sm);font-size:15px;font-weight:700;font-family:inherit;border:1px solid var(--accent);background:var(--accent);color:var(--accent-fg);cursor:pointer;text-decoration:none}.btn:active{opacity:.85}.btn.secondary{background:var(--bg);color:var(--fg);border-color:var(--line)}.btn.ghost{background:none;border-color:transparent;color:var(--muted)}.btn.danger{background:var(--bg);color:var(--danger);border-color:#fca5a5}.btn:disabled{background:var(--surface-2);color:var(--muted-2);border-color:var(--line);cursor:not-allowed}.btn-row{display:flex;gap:10px}.btn-row .btn{width:auto;flex:1 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.input{flex:1 1}.url-fetch .btn{width:auto;flex:0 0 auto;padding:12px 16px;font-size:14px}.sheet-overlay{position:fixed;inset:0;z-index:50;background:rgba(0,0,0,.4);display:none;align-items:flex-end;justify-content:center}.sheet-overlay.open{display:flex}.sheet{width:100%;max-width:var(--frame-w);background:var(--bg);border-radius:18px 18px 0 0;padding:20px 18px calc(18px + env(safe-area-inset-bottom));animation:slideUp .2s ease}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.sheet .grip{width:40px;height:4px;background:var(--line);border-radius:999px;margin:0 auto 16px}.sheet h3{margin:0 0 14px;font-size:17px}.sheet .sheet-book{display:flex;gap:12px;align-items:center;margin-bottom:18px}.sheet .sheet-book .title{font-weight:700;font-size:14px}.sheet .sheet-book .author{font-size:12px;color:var(--muted)}.sheet-error{background:#fef2f2;border:1px solid #fca5a5;color:var(--danger);font-size:12px;border-radius:var(--radius-sm);padding:8px 10px;margin-bottom:12px}.camera{position:relative;flex:1 1 auto;min-height:320px;background:#1a1a1a;display:flex;align-items:center;justify-content:center;overflow:hidden}.camera .scan-frame{width:78%;height:180px;border:2px solid rgba(255,255,255,.9);border-radius:14px;position:relative}.camera .scan-line{position:absolute;left:8px;right:8px;top:50%;height:2px;background:#fff;box-shadow:0 0 8px #fff;animation:scanmove 2s ease-in-out infinite}@keyframes scanmove{0%,to{top:18%}50%{top:82%}}.camera .hint{position:absolute;bottom:28px;left:0;right:0;text-align:center;color:#fff;font-size:13px;padding:0 24px;text-shadow:0 1px 3px rgba(0,0,0,.6)}.camera .corner{position:absolute;width:22px;height:22px;border:3px solid #fff}.camera .corner.tl{top:-2px;left:-2px;border-right:none;border-bottom:none;border-radius:12px 0 0 0}.camera .corner.tr{top:-2px;right:-2px;border-left:none;border-bottom:none;border-radius:0 12px 0 0}.camera .corner.bl{bottom:-2px;left:-2px;border-right:none;border-top:none;border-radius:0 0 0 12px}.camera .corner.br{bottom:-2px;right:-2px;border-left:none;border-top:none;border-radius:0 0 12px 0}.scan-headup{position:absolute;top:calc(14px + env(safe-area-inset-top));left:14px;right:14px;display:flex;align-items:center;gap:14px;padding:14px 18px;background:rgba(0,0,0,.72);color:#fff;border-radius:14px;font-size:15px;pointer-events:none;z-index:5;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);box-shadow:0 4px 14px rgba(0,0,0,.35)}.scan-headup__svg{width:72px;height:auto;flex:0 0 auto}.scan-headup__top{animation:scan-headup-pulse 1.6s ease-in-out infinite;transform-origin:center}@keyframes scan-headup-pulse{0%,to{opacity:1}50%{opacity:.55}}.scan-headup__text{line-height:1.35}.scan-headup__text strong{font-weight:700;font-size:16px}.scan-fallback{padding:16px;border-top:1px solid var(--line);background:var(--bg)}.scan-fallback .row{display:flex;gap:8px}.scan-fallback .row .input{flex:1 1}.scan-fallback .row .btn{width:auto;flex:0 0 auto;padding:12px 16px;font-size:14px}.scan-isbns{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.scan-isbns button{font-size:11px;padding:5px 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted);cursor:pointer;font-family:inherit}.scan-overlay{position:fixed;inset:0;z-index:70;background:var(--bg);display:flex;flex-direction:column}.scan-overlay .camera{flex:1 1 auto;min-height:320px}.scan-overlay-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--bg)}.scan-overlay-header h3{margin:0;font-size:16px}.scan-overlay-close{width:32px;height:32px;border:none;background:none;font-size:24px;line-height:1;color:var(--fg);cursor:pointer}.scan-overlay-error{padding:24px 16px;background:#1a1a1a;color:#fff;text-align:center;display:flex;flex-direction:column;gap:8px;flex:1 1 auto;align-items:center;justify-content:center}.scan-overlay-error .hint{color:rgba(255,255,255,.7)}.login{flex:1 1 auto;flex-direction:column;text-align:center;padding:32px}.login,.login .logo-lg{display:flex;align-items:center;justify-content:center}.login .logo-lg{width:64px;height:64px;border:3px solid var(--fg);border-radius:16px;font-size:28px;font-weight:800;margin-bottom:20px}.login h1{font-size:22px;margin:0 0 8px}.login p{color:var(--muted);font-size:14px;margin:0 0 36px}.btn-google{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;max-width:300px;padding:13px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);font-weight:700;font-size:14px;cursor:pointer;font-family:inherit;text-decoration:none}.login .note{font-size:11px;color:var(--muted-2);margin-top:18px}.center-state{flex:1 1 auto;flex-direction:column;text-align:center;padding:32px}.center-state,.center-state .check{display:flex;align-items:center;justify-content:center}.center-state .check{width:72px;height:72px;border-radius:50%;background:var(--fg);color:#fff;font-size:36px;margin-bottom:20px}.center-state h2{margin:0 0 8px;font-size:20px}.center-state p{margin:0 0 28px}.center-state p,.empty{color:var(--muted);font-size:14px}.empty{text-align:center;padding:48px 16px}.adm-row{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px}.adm-row .cover{width:40px;height:58px}.adm-row .grow{flex:1 1 auto;min-width:0}.adm-row .t{font-size:14px;font-weight:700;margin:0}.adm-row .s{font-size:12px;color:var(--muted);margin:2px 0 0}.adm-row .actions{display:flex;gap:6px;flex:0 0 auto}.icon-btn{width:34px;height:34px;border-radius:8px;border:1px solid var(--line);background:var(--bg);display:flex;align-items:center;justify-content:center;cursor:pointer}.icon-btn svg{width:16px;height:16px}.icon-btn.danger{color:var(--danger);border-color:#fca5a5}.stats{display:flex;gap:10px;margin-bottom:18px}.stat{flex:1 1;border:1px solid var(--line);border-radius:var(--radius);padding:14px;text-align:center}.stat .num{font-size:24px;font-weight:800}.stat .lbl{font-size:11px;color:var(--muted)}.loan-row{display:flex;align-items:center;gap:12px;padding:12px 4px;border-bottom:1px solid var(--line)}.loan-row .cover{width:36px;height:52px;font-size:8px}.loan-row .grow{flex:1 1;min-width:0}.loan-row .t{font-size:13px;font-weight:700;margin:0}.loan-row .who{font-size:12px;color:var(--muted);margin:2px 0 0}.loan-row .days{font-size:11px;color:var(--muted-2);text-align:right;flex:0 0 auto}.loan-row .days.over{color:var(--danger);font-weight:700}.notice{background:#f0fdf4;border:1px solid #86efac;color:#166534;font-size:13px;border-radius:var(--radius-sm);padding:10px 12px;margin-bottom:12px}.notice.info{background:var(--surface);border-color:var(--line);color:var(--muted)}.notice.warn{background:#fffbeb;border-color:#fcd34d;color:#92400e}.role-badge{display:inline-flex;align-items:center;font-size:11px;font-weight:700;padding:2px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:var(--bg)}.role-badge.admin{background:var(--fg);color:var(--accent-fg);border-color:var(--fg)}.chat-main{padding:0;padding-bottom:calc(var(--footer-h) + env(safe-area-inset-bottom));overflow:hidden;display:flex;flex-direction:column}.chat{flex-direction:column}.chat,.chat-messages{display:flex;flex:1 1 auto;min-height:0}.chat-messages{overflow-y:auto;padding:16px;flex-direction:column;gap:10px}.chat-msg{display:flex}.chat-msg.user{justify-content:flex-end}.chat-msg .bubble{max-width:82%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word}.chat-msg.assistant .bubble{background:var(--surface);border:1px solid var(--line);border-top-left-radius:4px}.chat-msg.user .bubble{background:var(--accent);color:var(--accent-fg);border-top-right-radius:4px}.chat-input{flex:0 0 auto;display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--bg)}.chat-input .input{flex:1 1}.chat-input .btn{width:auto;flex:0 0 auto;padding:12px 16px;font-size:14px}@media (max-width:599px){.frame{height:100dvh}.main{min-height:0}}@media (min-width:600px) and (max-width:959px){.frame{margin:24px auto;min-height:calc(100dvh - 48px);border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 40px rgba(0,0,0,.12);overflow:hidden}}@media (min-width:960px){body{background:var(--surface)}.frame{max-width:960px;margin:0 auto;min-height:100vh;border-left:1px solid var(--line);border-right:1px solid var(--line);border-radius:0;box-shadow:none;background:var(--bg);overflow:visible}.header{order:-2;position:-webkit-sticky;position:sticky;top:0;padding:0 32px}.main{order:0;overflow:visible;padding:28px 32px 56px}.tabbar{order:-1;position:-webkit-sticky;position:sticky;top:var(--header-h);left:auto;right:auto;bottom:auto;height:auto;border-top:none;border-bottom:1px solid var(--line);justify-content:flex-start;gap:4px;padding:6px 24px;z-index:19}.tabbar a{flex:0 0 auto;flex-direction:row;gap:8px;padding:10px 16px;font-size:14px;border-radius:8px}.tabbar a.active,.tabbar a:hover{background:var(--surface)}.tabbar a.active{color:var(--fg)}.tabbar a .ic{width:20px;height:20px}.tabbar a.scan{color:var(--muted-2)}.tabbar a.scan .ic{margin-top:0;background:none;border-radius:0;box-shadow:none;color:inherit}.tabbar a.scan .ic,.tabbar a.scan .ic svg{width:20px;height:20px}.tabbar a.scan span{color:inherit;margin-top:0}.tabbar a.scan.active{color:var(--fg)}.book-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:14px;gap:14px}.main>form{max-width:720px;margin-left:auto;margin-right:auto}.desc,.review{max-width:760px}.meta-table{max-width:560px}.camera{flex:0 0 auto;height:420px}.sheet-overlay{align-items:center}.sheet{max-width:440px;border-radius:16px}}