:root{--ink:#142039;--muted:#6b7484;--accent:#2857d9;--line:#dfe5ed;--paper:#f3f6fa;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.wrap{width:min(1260px,calc(100% - 80px));margin:auto}.topbar{background:#fff;border-bottom:1px solid var(--line)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{font-size:20px;font-weight:650;display:flex;gap:12px;align-items:center}.mark{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:var(--ink);color:white;font-size:23px}.navmeta{font-size:14px;color:var(--muted)}.intro{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:36px 0 29px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--accent);font-weight:700;margin:0 0 4px}h1{margin:0;font:500 clamp(38px,4vw,56px)/1.2 Georgia,"Times New Roman",serif;letter-spacing:-1.8px}.intro p:last-child{margin:12px 0 0;color:var(--muted);font-size:15px}.stats{display:flex;gap:32px;text-align:center}.stats strong{display:block;font:400 34px/1.2 Georgia,serif}.stats span{font-size:13px;color:var(--muted)}.catalogbar{border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px;padding:19px 0}.catalogbar h2{font-size:18px;margin:0}.catalogbar small{font-size:13px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding-bottom:42px}.card{min-width:0;display:flex;flex-direction:column;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:0 2px 2px #15203a03;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px #192c4310}.preview{position:relative;height:220px;display:block;overflow:hidden;background:#e7ecf3;border-bottom:1px solid var(--line)}.preview img{display:block;width:calc(100% - 72px);height:auto;margin:24px auto 0;box-shadow:0 5px 15px #15203a18;border-radius:2px}.preview .badge{position:absolute;bottom:13px;left:16px;padding:4px 10px;background:#fff;border:1px solid var(--line);border-radius:7px;font-size:12px;font-weight:600;box-shadow:0 3px 8px #1420390c}.preview.empty{display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;padding:23px;background:#e8edf6}.preview.empty .index{font:italic 64px/1 Georgia,serif;color:#8495b3}.preview.empty .empty-title{font:500 21px/1.5 Georgia,"Microsoft YaHei",serif;max-width:80%;color:#405477}.preview.empty .badge{left:auto;right:16px}.cardbody{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}.labels{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-bottom:12px}.genres{font-size:13px;color:var(--muted)}.level{font-size:12px;background:#eaf0ff;border:1px solid #dbe5ff;color:#3559a7;border-radius:20px;padding:2px 9px;white-space:nowrap}.card h3{font-size:23px;letter-spacing:-.5px;line-height:1.35;margin:0 0 7px;overflow-wrap:anywhere}.musician{margin:0 0 18px;color:var(--muted);font-size:14px}.key{font-size:13px;color:#626e81;line-height:1.6;border-top:1px solid #edf0f5;padding-top:14px;margin:0 0 15px}.key strong{font-weight:500;color:var(--ink);margin-right:9px}details{font-size:13px;color:var(--muted);margin:0 0 18px}summary{cursor:pointer;width:fit-content}details p{margin:8px 0 0}.actions{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;flex-wrap:wrap}.pdfbutton{display:inline-flex;justify-content:center;align-items:center;min-height:43px;padding:9px 18px;background:var(--ink);color:white;border-radius:8px;font-weight:500}.pdfbutton:hover{color:white;background:var(--accent)}.source{border-bottom:1px solid #bac4d3;padding:5px 0;color:#586981}.nopdf{color:#86909e;font-size:13px}.footer{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);font-size:13px;display:flex;justify-content:space-between;gap:24px}.footer p{margin:0}.footer strong{color:var(--ink);font-weight:600}.empty-state{grid-column:1/-1;padding:40px;border:1px solid var(--line);border-radius:12px;background:white;color:var(--muted)}@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stats{gap:22px}}@media(max-width:620px){.wrap{width:calc(100% - 32px)}.nav{height:68px}.navmeta{font-size:12px}.intro{padding:27px 0 23px;align-items:start}.intro p:last-child{max-width:210px;font-size:14px}.stats{gap:16px}.stats strong{font-size:27px}.stats span{font-size:12px}.grid{grid-template-columns:1fr;gap:20px}.preview{height:225px}.preview img{width:calc(100% - 90px)}.catalogbar{align-items:start}.catalogbar small{max-width:130px;text-align:right}.footer{flex-direction:column;gap:6px}.cardbody{padding:22px}.card h3{font-size:23px}}@media(prefers-reduced-motion:reduce){.card{transition:none}.card:hover{transform:none}}.stats span{white-space:nowrap}.stats>div{min-width:54px}
/* Library controls */
button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}[hidden]{display:none!important}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.intro{padding:28px 0}.intro h1{font-size:42px}.library-layout{display:grid;grid-template-columns:224px minmax(0,1fr);gap:28px;align-items:start;border-top:1px solid var(--line);padding-top:24px}.sidebar{background:white;border:1px solid var(--line);border-radius:14px;padding:20px;position:sticky;top:20px}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:24px}.sidebar-heading h2{font-size:17px;margin:0}.iconbutton{border:0;background:transparent;color:var(--muted);width:32px;height:32px;display:grid;place-items:center;font-size:25px;line-height:1;border-radius:7px;flex:none}.iconbutton:hover{background:#eef2f8;color:var(--ink)}.filter-field{display:flex;flex-direction:column;gap:8px;margin-bottom:22px}.filter-field label{font-size:14px;font-weight:600}.filter-field select,.sortbox select{background:white;color:var(--ink);border:1px solid #cbd5e3;border-radius:8px;min-height:43px;padding:8px 10px;font-size:14px;max-width:100%}.resetbutton{min-height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--accent);padding:7px 13px;font-size:14px}.sidebar .resetbutton{width:100%}.sidebar-note{font-size:13px;color:var(--muted);margin:28px 0 0;padding-top:18px;border-top:1px solid var(--line)}.catalog{min-width:0}.catalogbar{padding:0 0 18px;border-top:0}.toolbar{display:flex;gap:12px;align-items:center}.filter-toggle{display:flex;gap:7px;align-items:center;justify-content:center;white-space:nowrap;border:1px solid #cbd5e3;background:white;color:var(--ink);border-radius:9px;min-height:44px;padding:8px 12px;font-size:14px}.filter-toggle:hover{border-color:var(--accent)}#filter-count{border-radius:20px;background:var(--accent);color:white;padding:0 6px;font-size:12px}.searchbox{display:flex;gap:9px;align-items:center;background:white;border:1px solid #cbd5e3;border-radius:9px;padding:0 12px;flex:1;min-width:130px;min-height:44px;color:var(--muted)}.searchbox input{background:transparent;border:0;min-width:0;width:100%;padding:10px 0;font-size:15px;color:var(--ink)}.searchbox input:focus-visible{outline-offset:0;outline-width:2px}.searchbox input::-webkit-search-cancel-button{display:none}.sortbox{display:flex;align-items:center;gap:8px;white-space:nowrap;font-size:14px}.sortbox label{color:var(--muted)}.sortbox select{min-height:44px;width:147px}.result-count{margin:16px 0;font-size:14px;color:var(--muted);min-height:23px}.catalog .grid{gap:20px;padding-bottom:0;grid-template-columns:repeat(2,minmax(0,1fr))}.sidebar-closed{grid-template-columns:minmax(0,1fr)}.sidebar-closed .sidebar{display:none}.sidebar-closed .grid{grid-template-columns:repeat(3,minmax(0,1fr))}.pagination{text-align:center;padding:28px 0 40px}.pagination p{font-size:13px;color:var(--muted);margin:10px 0 0}.loadmore{background:var(--ink);color:white;border:0;border-radius:9px;padding:12px 26px;min-height:46px;font-size:15px}.loadmore:hover{background:var(--accent)}.empty-state h3{font-size:19px;margin:0 0 8px;color:var(--ink)}.empty-state p{margin:0 0 16px}.sidebar-backdrop{position:fixed;inset:0;background:#14203970;border:0;z-index:39}.drawer-open{overflow:hidden}
@media(min-width:1400px){.catalog .grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1100px){.library-layout{gap:20px;grid-template-columns:200px minmax(0,1fr)}.sidebar{padding:16px}.toolbar{flex-wrap:wrap}.searchbox{order:0;flex-basis:calc(100% - 125px)}.sortbox{margin-left:auto}.catalog .cardbody{padding:20px}.catalog .preview img{width:calc(100% - 48px)}.sidebar-closed{grid-template-columns:minmax(0,1fr)}.sidebar-closed .grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.library-layout,.sidebar-closed{grid-template-columns:minmax(0,1fr);padding-top:20px}.sidebar,.sidebar-closed .sidebar{position:fixed;top:0;left:0;bottom:0;width:min(310px,calc(100% - 48px));overflow-y:auto;border-radius:0;padding:24px;z-index:40;display:block}.sidebar-closed .sidebar{display:none}.catalog .grid,.sidebar-closed .grid{grid-template-columns:repeat(2,minmax(0,1fr))}.intro h1{font-size:36px}.intro .eyebrow{font-size:11px;letter-spacing:1.5px}.sortbox label{display:none}.catalogbar small{font-size:12px;max-width:155px}.catalog .preview{height:200px}.catalog .card h3{font-size:21px}.toolbar{gap:10px}.sortbox{margin-left:0}.sortbox select{width:100%}.searchbox{flex-basis:calc(100% - 100px)}}
@media(max-width:620px){.catalog .grid,.sidebar-closed .grid{grid-template-columns:minmax(0,1fr)}.catalog .preview{height:225px}.catalog .preview img{width:calc(100% - 90px)}.sortbox{margin-left:auto}.intro{gap:14px}.intro p:last-child{max-width:190px}.stats{gap:12px}.filter-toggle{padding:8px 10px}.intro .eyebrow{display:none}}