:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:#1f2328;background:#f6f7f9;--bg: #f6f7f9;--surface: #ffffff;--surface-muted: #f0f2f5;--line: #dfe3e8;--line-soft: #edf0f3;--text: #1f2328;--muted: #6a737d;--faint: #8c959f;--brand: #d62d45;--brand-dark: #ad1f33;--brand-soft: #fff0f2;--accent: #0f766e;--warning: #9a6700;--shadow: 0 20px 50px rgba(31, 35, 40, .1);--radius: 8px}*{box-sizing:border-box}body{margin:0;min-width:320px;background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;display:grid;grid-template-columns:264px minmax(0,1fr);grid-template-rows:64px minmax(0,1fr);background:var(--bg)}.topbar{grid-column:1 / -1;display:flex;align-items:center;gap:18px;padding:0 24px;background:#ffffffeb;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20}.brand{width:240px;display:flex;align-items:center;gap:10px;font-weight:750;letter-spacing:0}.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}.top-search{flex:1;min-width:260px;max-width:700px;position:relative}.top-search input,.field,.select-field,.textarea-field{width:100%;border:1px solid var(--line);background:#fff;border-radius:var(--radius);color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.top-search input{height:40px;padding:0 44px 0 14px}.field,.select-field{height:40px;padding:0 12px}.textarea-field{padding:10px 12px;min-height:92px;resize:vertical}.top-search input:focus,.field:focus,.select-field:focus,.textarea-field:focus{border-color:var(--brand);box-shadow:0 0 0 3px #d62d451f}.search-submit{position:absolute;right:4px;top:4px;height:32px;width:36px;border:0;border-radius:6px;background:var(--brand);color:#fff}.top-actions{display:flex;align-items:center;gap:10px}.sidebar{border-right:1px solid var(--line);background:#fff;padding:18px 14px;overflow-y:auto}.sidebar-section{margin-bottom:24px}.sidebar-title{margin:0 0 10px;padding:0 10px;font-size:12px;color:var(--faint);font-weight:700;letter-spacing:.08em}.nav-list,.plain-list{list-style:none;padding:0;margin:0}.nav-link,.mini-link{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:36px;padding:8px 10px;border-radius:7px;color:var(--muted)}.nav-link.router-link-active,.nav-link:hover,.mini-link:hover{color:var(--text);background:var(--surface-muted)}.main{min-width:0;overflow:auto}.page{width:min(1180px,calc(100vw - 320px));margin:0 auto;padding:28px 28px 56px}.page-wide{width:min(1360px,calc(100vw - 320px))}.eyebrow{color:var(--brand);font-weight:750;font-size:13px;margin-bottom:8px}.page-title{margin:0;font-size:34px;line-height:1.16;letter-spacing:0}.page-subtitle{color:var(--muted);margin:12px 0 0;line-height:1.7;max-width:760px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.panel-pad{padding:20px}.grid{display:grid;gap:16px}.home-grid{grid-template-columns:minmax(0,1.35fr) 380px;margin-top:24px}.filter-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.search-field{grid-column:span 2}.section-header{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}.section-title{margin:0;font-size:18px}.muted{color:var(--muted)}.tiny{font-size:12px;color:var(--faint)}.button,.ghost-button,.icon-button,.danger-button{min-height:38px;border-radius:7px;border:1px solid transparent;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:transform .15s,background .15s,border-color .15s}.text-button{border:0;background:transparent;color:var(--brand);padding:4px 0;justify-self:start;font-weight:700}.text-button:hover{color:var(--brand-dark);text-decoration:underline}.button{background:var(--brand);color:#fff}.button:hover{background:var(--brand-dark)}.ghost-button{background:#fff;border-color:var(--line);color:var(--text)}.ghost-button:hover,.icon-button:hover{border-color:#c8d0d8;background:var(--surface-muted)}.danger-button{background:#fff;border-color:#ffd8de;color:var(--brand)}.icon-button{width:38px;padding:0;background:#fff;border-color:var(--line);color:var(--text)}.button:disabled,.ghost-button:disabled,.danger-button:disabled{cursor:not-allowed;opacity:.55}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{min-height:30px;display:inline-flex;align-items:center;gap:6px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);padding:5px 10px;font-size:13px}.chip.active,.chip-button.active{color:var(--brand);background:var(--brand-soft);border-color:#ffc9d1}.chip-button{min-height:32px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--text);padding:5px 12px}.combo-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:border-color .15s,box-shadow .15s,transform .15s}.combo-card:hover{border-color:#c8d0d8;box-shadow:0 12px 24px #1f232814;transform:translateY(-1px)}.combo-card strong{display:block;margin-bottom:6px}.score-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.score-card{display:grid;grid-template-columns:78px minmax(0,1fr);gap:14px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);min-height:154px}.score-cover{width:78px;aspect-ratio:.72;border-radius:6px;background:linear-gradient(180deg,rgba(255,255,255,.55),transparent 42%),repeating-linear-gradient(0deg,rgba(31,35,40,.12) 0 1px,transparent 1px 12px),#f3eadf;border:1px solid #e6d8c8;display:grid;place-items:center;color:#8a6844;font-size:26px;font-weight:750}.score-card-main{min-width:0;display:flex;flex-direction:column;gap:8px}.score-title{font-weight:760;color:var(--text);line-height:1.35}.score-title:hover{color:var(--brand)}.score-original-title{color:var(--faint);font-size:11px;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.detail-original-title{margin:4px 0 0;color:var(--muted);font-size:20px;font-style:italic;font-family:Georgia,Times New 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#e0cdb8;display:grid;place-items:center;color:#7f5f3f;font-size:44px;font-weight:800}.info-table{display:grid;gap:10px}.info-row{display:grid;grid-template-columns:92px minmax(0,1fr);gap:12px;padding-bottom:10px;border-bottom:1px solid var(--line-soft)}.info-row span:first-child{color:var(--faint)}.empty-state,.loading-state{min-height:180px;display:grid;place-items:center;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius);background:#ffffffb3;padding:22px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#1f23287a;display:grid;place-items:center;padding:20px;z-index:50}.modal{width:min(440px,100%);background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.app-shell{display:block}.topbar{display:grid;grid-template-columns:auto auto minmax(220px,1fr) auto;max-width:none;padding:0 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28%),linear-gradient(125deg,#152f49,#205b71 62%,#c95655)}.hero-panel h1{font-size:clamp(34px,4.5vw,58px);max-width:760px;line-height:1.08;margin:0;letter-spacing:-.04em}.hero-panel .eyebrow{color:#cfeef1}.hero-copy{max-width:660px;line-height:1.8;color:#ffffffc7}.hero-search{display:flex;gap:10px;width:min(100%,640px);margin-top:28px;padding:7px;border-radius:12px;background:#fff}.hero-search input,.library-search input{min-width:0;flex:1;border:0;outline:0;padding:0 14px;font-size:15px;background:transparent}.hero-stats{display:flex;flex-wrap:wrap;gap:24px;margin-top:28px;color:#ffffffbf;font-size:13px}.hero-stats strong{display:block;color:#fff;font-size:20px}.hero-note{align-self:end;padding:24px;border:1px solid rgba(255,255,255,.24);border-radius:16px;background:#0a202f42;line-height:1.6}.hero-note p{color:#ffffffbf;font-size:14px}.hero-note-icon{display:block;font-size:34px;margin-bottom:22px}.finder-panel{margin-top:24px;padding:28px}.finder-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.selection-row{display:flex;flex-wrap:wrap;gap:8px;min-height:42px;margin:20px 0}.selection-chip,.placeholder-chip{border:1px solid #bcd5df;background:#eef8fa;border-radius:999px;padding:8px 12px;color:#174c5a}.selection-chip span{margin-left:6px}.placeholder-chip{color:var(--faint);background:#f8fafb;border-style:dashed}.instrument-picker{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:8px}.instrument-button{min-height:54px;border:1px solid var(--line);border-radius:9px;background:#fff;text-align:left;padding:8px 10px}.instrument-button:hover{border-color:#73a6b8;background:#f2fafb}.instrument-button span,.instrument-button small{display:block}.instrument-button small{margin-top:4px;color:var(--faint)}.finder-result{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line-soft)}.match-summary{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-right:auto}.result-link{padding:0;border:0;background:transparent;color:var(--brand);font-weight:700}.next-choices{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.section-block{margin-top:42px}.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:28px;border:1px solid var(--line);border-radius:14px;background:#fff}.family-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:18px}.family-link{display:flex;justify-content:space-between;padding:11px;border:1px solid var(--line-soft);border-radius:8px}.family-link:hover{border-color:#9fc7d0}.family-link small,.popular-list span{color:var(--faint)}.popular-list{display:grid;gap:12px;padding-left:22px;margin-top:18px}.popular-list li{padding-left:6px}.popular-list a{display:block;font-weight:700}.popular-list span{font-size:13px}.library-heading{display:flex;justify-content:space-between;gap:20px;align-items:flex-end}.library-layout{display:grid;grid-template-columns:272px minmax(0,1fr);gap:28px;margin-top:26px}.library-sidebar{align-self:start;position:sticky;top:82px;max-height:calc(100vh - 104px);overflow:auto;padding-right:8px}.filter-section{padding:16px 0;border-bottom:1px solid var(--line)}.filter-section h2{margin:0 0 10px;font-size:15px}.filter-section label{display:grid;gap:6px;margin-top:12px;color:var(--muted);font-size:13px}.filter-section select,.result-toolbar select{height:36px;border:1px solid var(--line);border-radius:7px;background:#fff;padding:0 8px}.filter-reset{margin-top:16px;border:0;background:transparent}.directory-tree{list-style:none;margin:0;padding:0 0 0 10px}.directory-tree .directory-tree{border-left:1px solid var(--line-soft);margin-left:8px}.directory-node{display:flex;align-items:center;gap:4px;min-height:30px;border-radius:6px}.directory-node.selected{background:var(--brand-soft)}.tree-toggle,.tree-spacer{width:20px;flex:none}.tree-toggle{border:0;background:transparent;color:var(--faint)}.tree-label{border:0;background:transparent;text-align:left;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:4px 0}.tree-label:hover{color:var(--brand)}.tree-count{color:var(--faint);font-size:11px;padding-right:5px}.library-search{display:flex;gap:8px;padding:7px;border:1px solid var(--line);border-radius:11px;background:#fff}.active-filter-row{display:flex;gap:7px;flex-wrap:wrap;margin:16px 0}.active-filter-chip{display:inline-flex;align-items:center;gap:5px;border:1px solid #f3a6b2;border-radius:999px;background:var(--brand-soft);color:var(--brand);padding:6px 10px;font-size:13px}.active-filter-chip:hover{border-color:var(--brand)}.active-filter-chip b{font-size:15px;line-height:.8}.filter-instrument{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 10px;font-size:13px}.filter-instrument.selected{border-color:#f3a6b2;color:var(--brand);background:var(--brand-soft)}.result-toolbar{display:flex;justify-content:space-between;align-items:center;margin:18px 0}.pagination-row{display:flex;justify-content:center;align-items:center;gap:14px;margin-top:28px}.library-cards{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.library-empty{gap:8px;text-align:center;color:var(--muted)}.library-empty strong{color:var(--ink);font-size:17px}.library-empty span{max-width:360px;line-height:1.65}.error-state{gap:12px}.error-state .ghost-button{margin-top:4px}.score-card-skeleton{min-height:164px;border:0;background:linear-gradient(100deg,#f2f3f5 25%,#fafbfc,#f2f3f5 55%);background-size:220% 100%;animation:score-skeleton 1.35s ease-in-out infinite}.score-card-skeleton:before,.score-card-skeleton:after{content:"";display:block;height:12px;margin:22px;border-radius:5px;background:#ffffff8a}.score-card-skeleton:after{width:52%;margin-top:12px}.source-copyright{display:block;margin-top:6px;color:var(--muted);font-size:12px}@keyframes score-skeleton{to{background-position:-120% 0}}.tree-skeleton{display:grid;gap:9px;padding:6px 0}.tree-skeleton i,.composer-skeleton i{display:block;height:12px;border-radius:5px;background:#edf0f2}.tree-skeleton i:nth-child(3n){width:62%}.tree-skeleton i:nth-child(3n+1){width:86%}.composer-skeleton{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:26px}.composer-skeleton i{height:70px}.detail-skeleton{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px}.detail-skeleton div{min-height:220px;border-radius:12px;background:linear-gradient(100deg,#f2f3f5 25%,#fafbfc,#f2f3f5 55%);background-size:220% 100%;animation:score-skeleton 1.35s ease-in-out infinite}.detail-skeleton div:first-child{grid-column:1 / -1;min-height:280px}.score-card-heading{display:flex;gap:8px;align-items:flex-start}.difficulty-dot{width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:#eef6ff;border:1px solid #afd3fb;color:#2868b8;font-size:12px;font-weight:700;flex:none}.difficulty-chip{display:inline-flex;align-items:center;gap:1px}.difficulty-chip i{color:#d6d9dd;font-style:normal;font-size:13px}.difficulty-chip i.filled{color:var(--brand)}.difficulty-chip i:last-of-type{margin-right:5px}.clamp-one{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.text-link{color:var(--brand);font-weight:700}.icon-text-button{border:0;background:transparent;padding:0;color:var(--muted)}.icon-text-button:hover{color:var(--brand)}.back-link{display:inline-block;margin-bottom:18px;color:var(--muted)}.detail-banner{position:relative;display:grid;grid-template-columns:164px minmax(0,1fr);gap:30px;padding:32px;border-radius:16px;background:#fff;border:1px solid var(--line)}.detail-favorite-button{position:absolute;top:16px;right:16px;display:flex;align-items:center;justify-content:center;width:28px;height:28px;padding:0;border:0;background:transparent;color:#c7cad0;cursor:pointer;transition:color .15s}.detail-favorite-button:hover,.detail-favorite-button.active{color:var(--brand)}.detail-main h1{margin:0;font-size:30px;line-height:1.22}.detail-composer{color:var(--muted);font-size:17px;margin:10px 0 18px}.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px;margin-top:24px}.detail-content{display:grid;gap:18px}.content-section,.side-card{padding:24px;border:1px solid var(--line);border-radius:12px;background:#fff}.content-section h2{font-size:18px;margin:0 0 12px}.instrument-summary{display:flex;flex-wrap:wrap;gap:10px}.instrument-stat{min-width:90px;padding:13px;border-radius:8px;background:#f4f8f9}.instrument-stat strong,.instrument-stat span{display:block}.instrument-stat strong{font-size:24px;color:#265b68}.detail-note{line-height:1.7;color:var(--muted)}.source-list{display:grid;gap:10px;margin-top:16px}.source-row,.history-list article{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:14px;border:1px solid var(--line-soft);border-radius:8px}.source-row p,.history-list p{margin:5px 0 0;color:var(--faint);font-size:13px}.source-row-actions{display:flex;flex:none;gap:4px}.inline-pdf-viewer{height:75vh;min-height:420px;border:1px solid var(--line-soft);border-radius:8px;overflow:hidden;background:#f4f5f7;display:flex;flex-direction:column}.pdf-viewer{display:flex;flex-direction:column;height:100%;min-height:0}.pdf-viewer-toolbar{display:flex;align-items:center;gap:10px;flex:none;padding:8px 14px;border-bottom:1px solid var(--line-soft);background:#fff}.pdf-viewer-toolbar-gap{flex:1}.pdf-viewer-page-indicator,.pdf-viewer-zoom-indicator{color:var(--faint);font-size:13px;min-width:44px;text-align:center}.pdf-viewer-canvas{flex:1;min-height:0;overflow:auto;display:flex;justify-content:center;padding:16px}.pdf-viewer-canvas canvas{box-shadow:0 1px 4px #1f23281f}.pdf-viewer-error{margin:auto;color:var(--muted)}.side-card h3{margin-top:0}.side-card dl{margin:0}.side-card dl div{display:grid;grid-template-columns:86px 1fr;gap:10px;padding:10px 0;border-top:1px solid var(--line-soft)}.side-card dt{color:var(--faint)}.side-card dd{margin:0}.history-list{display:grid;gap:10px}.auth-dialog{width:min(840px,100%);display:grid;grid-template-columns:.85fr 1.15fr;background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}.auth-intro{display:flex;flex-direction:column;justify-content:space-between;padding:38px;background:linear-gradient(145deg,#15324b,#29746e);color:#fff}.auth-intro 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