@font-face{font-family:'Instrument Sans';src:url('/instrument-sans.woff2') format('woff2');font-weight:400 700;font-display:swap}
:root{--ground:#fff;--surface:#f9f9f9;--text:#1f201d;--muted:#636361;--accent:#1b6e66;--border:#eaeaea;--negative:#b42318;--radius:22px;--gap:16px;font-family:'Instrument Sans','PingFang SC','Microsoft YaHei',sans-serif;color:var(--text);background:var(--ground);font-size:16px;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #1b6e66;outline-offset:3px}button,a,input,select{transition:background-color .15s,color .15s,transform .15s}button:active{transform:translateY(1px)}button{min-height:44px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}p{line-height:1.75;text-wrap:pretty}h1,h2,p{margin-top:0}h1{font-size:30px;font-weight:500;letter-spacing:-.035em;line-height:1.35;margin-bottom:0}h2{font-size:17px;font-weight:600;line-height:1.45}button{border:0}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 24px;border-radius:999px;font-weight:500;white-space:nowrap;text-decoration:none}.primary{background:var(--accent);color:white}.primary:hover{background:#15584f}.secondary{background:#eeeeeb;color:var(--text)}.secondary:hover{background:#e4e4e0;text-decoration:none}.text-button{background:transparent;color:var(--muted);padding:0 10px}.error{color:var(--negative)}[hidden]{display:none!important}.mark{width:34px;height:34px}.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-size:20px;font-weight:600}.brand:hover{text-decoration:none}.app-shell{display:grid;grid-template-columns:224px minmax(0,1fr);min-height:100dvh;background:#f7f8f6;padding:8px 8px 8px 0;gap:8px}.sidebar{display:flex;flex-direction:column;position:sticky;top:8px;height:calc(100dvh - 16px);padding:28px 20px}.sidebar nav{display:flex;flex-direction:column;gap:8px;margin-top:46px}.nav{text-align:left;padding:0 16px;background:transparent;color:var(--muted);border-radius:10px}.nav.active{background:#e8ebe7;color:var(--text);font-weight:600}.nav:hover{background:#edf0eb}.sidebar-bottom{margin-top:auto;color:var(--muted);font-size:14px;padding:0 14px}.sidebar-bottom p{margin:0}.sidebar-bottom .text-button{padding:0}main{min-width:0;border:1px solid var(--border);border-radius:16px;background:var(--ground);padding:44px clamp(24px,4vw,64px) 20px;min-height:calc(100dvh - 16px)}.page-header{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:32px}.scope{font-size:14px;color:var(--muted);margin-bottom:8px}.source-state{max-width:220px;font-size:13px;color:var(--muted);line-height:1.6;text-align:right;font-variant-numeric:tabular-nums}.source-state.connected{color:var(--accent)}.search-form{background:var(--surface);border-radius:var(--radius);padding:20px;display:grid;grid-template-columns:1fr auto;gap:12px}input{min-width:0;min-height:48px;background:white;border:1px solid #d9d9d6;border-radius:10px;padding:12px 16px;color:var(--text)}input::placeholder{color:#73736f}.format-label{grid-column:1/-1;color:var(--muted);font-size:14px;display:flex;align-items:center;gap:10px}.format-label select{height:38px;border:0;background:#eee;color:var(--text);padding:0 12px;border-radius:8px}.section-heading{display:flex;align-items:baseline;justify-content:space-between;margin-top:32px;margin-bottom:16px;gap:16px}.section-heading h2{margin:0}.section-heading span{color:var(--muted);font-size:13px}.empty-copy{color:var(--muted);font-size:15px;max-width:660px;margin:20px 0 48px}.book-list{display:grid;gap:0}.book{display:grid;grid-template-columns:76px minmax(0,1fr) auto;gap:20px;padding:24px 0;border-bottom:1px solid #f0f0ed;align-items:center}.cover{display:block;width:76px;height:108px;object-fit:contain;object-position:top;background:#f3f3f0;color:var(--muted);border-radius:3px;font-size:12px}.book h3{font-size:16px;font-weight:500;line-height:1.65;margin:0 0 8px;overflow-wrap:anywhere}.book .meta{font-size:13px;line-height:1.6;color:var(--muted);margin:0 0 8px}.book .author{font-size:14px;margin:0 0 5px}.book-actions{display:flex;align-items:stretch;flex-direction:column;gap:8px;width:124px}.book-actions .primary,.book-actions .secondary{font-size:14px;padding:10px 14px}.book-status{font-size:13px;color:var(--accent);line-height:1.6;margin:8px 0 0}.book-status.error{color:var(--negative)}.more{display:flex;margin:28px auto}.library-intro{display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--surface);padding:20px 24px;border-radius:var(--radius);margin-bottom:16px}.library-intro p{font-size:15px;margin:0;max-width:620px}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.help-grid article{background:var(--surface);border-radius:var(--radius);padding:28px}.help-grid article p{margin-bottom:0;font-size:15px}.help-grid article a{display:inline-block;margin-top:16px;font-size:15px}.quiet-note{color:var(--muted);font-size:14px;margin:28px 0}.notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:calc(100vw - 32px);padding:14px 22px;background:#1f201d;color:white;border-radius:12px;font-size:14px;z-index:20}.notice.error{background:#8e231d}footer{margin-top:40px;padding-top:20px;color:var(--muted);font-size:13px}body:has(#login:not([hidden])){background:#f7f8f6}.login-shell{width:min(1100px,100%);margin:0 auto;min-height:100dvh;display:grid;grid-template-columns:1fr 400px;align-items:center;gap:100px;padding:48px 36px}.login-copy .wordmark{display:inline-block;font-size:20px;vertical-align:top;margin:2px 0 38px 10px}.login-copy h1{font-size:42px;font-weight:500;margin-bottom:20px}.login-copy>p:last-child{color:var(--muted);max-width:380px}.login-form{display:flex;flex-direction:column;background:white;border-radius:22px;padding:32px;gap:10px}.login-form h2{font-size:22px;font-weight:500;margin-bottom:14px}.login-form label{font-size:14px}.login-form input{margin-bottom:8px}.login-form .primary{margin-top:12px}.login-form .error{font-size:14px;min-height:22px;margin-bottom:0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
/* Desktop: 224px navigation + 8px gap + flexible sheet. Search spans the whole canvas. */
@media(min-width:1500px){main{padding-left:max(64px,calc((100vw - 224px - 1100px)/2));padding-right:max(64px,calc((100vw - 224px - 1100px)/2))}}
@media(max-width:900px){.app-shell{grid-template-columns:180px minmax(0,1fr)}.sidebar{padding:24px 12px}main{padding:32px 24px}.brand{font-size:17px}.page-header{align-items:flex-start;flex-direction:column;gap:12px}.source-state{text-align:left;max-width:none}.help-grid{grid-template-columns:1fr}.book{gap:16px;grid-template-columns:64px minmax(0,1fr)}.cover{width:64px;height:96px}.book-actions{grid-column:2;flex-direction:row;width:auto;align-items:center;flex-wrap:wrap}.login-shell{gap:40px;grid-template-columns:1fr 360px;padding:32px}}
@media(max-width:600px){.app-shell{display:block;padding:0;background:white}.sidebar{position:static;height:auto;padding:18px 20px 0;background:white;display:grid;grid-template-columns:1fr auto}.brand{font-size:19px}.sidebar nav{grid-column:1/-1;flex-direction:row;margin:20px 0 0;gap:8px;border-bottom:1px solid var(--border);padding-bottom:10px}.nav{padding:0 16px;min-height:44px}.sidebar-bottom{margin:0;padding:0;display:flex;align-items:center;gap:10px;font-size:12px}.sidebar-bottom .text-button{font-size:12px}.sidebar-bottom p{max-width:58px;overflow:hidden;white-space:nowrap}main{border:0;border-radius:0;padding:28px 20px 20px;min-height:calc(100dvh - 130px)}h1{font-size:26px}.page-header{margin-bottom:22px;gap:12px}.scope{display:none}.source-state{font-size:12px}.search-form{padding:14px;gap:10px}.search-form input{padding:12px;font-size:16px}.search-form .primary{padding:10px 18px}.section-heading{margin-top:26px}.section-heading h2{font-size:16px}.book{grid-template-columns:64px minmax(0,1fr);padding:22px 0;gap:12px 16px;align-items:start}.book h3{font-size:15px;line-height:1.65}.book .meta{font-size:12px}.book .author{font-size:13px}.book-actions{gap:10px}.book-actions .primary,.book-actions .secondary{min-height:44px;font-size:13px}.library-intro{flex-direction:column;align-items:flex-start;padding:18px;gap:16px}.library-intro p{font-size:14px}.help-grid article{padding:22px}.help-grid h2{font-size:17px}.login-shell{grid-template-columns:1fr;gap:28px;padding:40px 24px;align-content:center;align-items:start}.login-copy h1{font-size:32px;margin-bottom:12px}.login-copy .wordmark{margin-bottom:24px}.login-copy>p:last-child{font-size:15px;margin-bottom:0}.login-form{padding:24px}.notice{bottom:18px;width:max-content}footer{margin-top:28px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

.book-details{font-size:13px;color:var(--muted);margin:8px 0}.book-details summary{cursor:pointer;min-height:44px;display:flex;align-items:center;color:var(--accent)}.book-details p{margin:8px 0 0;font-size:13px;overflow-wrap:anywhere}.sidebar-bottom{min-width:0}
@media(max-width:600px){.sidebar-bottom{grid-column:2;grid-row:1}}

.help-grid code{display:block;overflow-wrap:anywhere;user-select:all;font-size:13px;color:var(--accent)}.help-grid .secondary{margin-top:14px}