:root{--bg:#f6f8f4;--paper:#fff;--ink:#18221e;--muted:#66736e;--line:#dce4dc;--green:#197a59;--teal:#1f8a8a;--shadow:0 16px 44px rgba(31,64,49,.12)}
*{box-sizing:border-box}
body{margin:0;background:linear-gradient(180deg,#f6f8f4,#eef4ee);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif}
a{color:inherit;text-decoration:none}
.library-header{padding:34px 24px 26px;background:#fff;border-bottom:1px solid var(--line)}
.library-header>div{width:min(1180px,calc(100% - 8px));margin:auto}
.back-home{display:inline-flex;margin-bottom:18px;color:var(--green);font-weight:700}
h1{margin:0;font-size:clamp(30px,5vw,52px);line-height:1.1}
.library-header p{max-width:780px;margin:16px 0 0;color:var(--muted);line-height:1.8}
.library-layout{width:min(1180px,calc(100% - 32px));margin:28px auto 56px;display:grid;grid-template-columns:240px minmax(0,1fr);gap:24px}
.category-nav{align-self:start;position:sticky;top:16px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px;box-shadow:var(--shadow)}
.category-nav strong{display:block;margin-bottom:12px}
.category-nav a{display:flex;justify-content:space-between;gap:12px;padding:10px 8px;border-radius:6px;color:#31413b}
.category-nav a:hover{background:#eef6f0;color:var(--green)}
.category-nav span{color:var(--muted)}
.material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.material-card{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;min-width:0}
.thumb{width:100%;aspect-ratio:4/3;object-fit:contain;background:#f0f4f0;border-bottom:1px solid var(--line)}
.image-thumb{display:block}
.image-thumb img{width:100%;height:100%;object-fit:contain;display:block}
.audio-box,.doc-box{height:180px;display:grid;place-items:center;background:#edf5f2;border-bottom:1px solid var(--line);padding:18px;text-align:center}
.audio-box audio{width:100%}
.doc-box span{display:block;font-size:34px;font-weight:900;color:var(--green)}
.doc-box small{display:block;margin-top:8px;color:var(--muted)}
.material-body{padding:14px;display:flex;flex-direction:column;gap:10px;min-height:170px}
.material-body h3{margin:0;font-size:17px;line-height:1.45;word-break:break-word}
.material-body p{margin:0;color:var(--muted);font-size:13px;line-height:1.5;word-break:break-word}
.meta{margin-top:auto;display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:10px}
.open-link{display:inline-flex;align-self:flex-start;color:#fff;background:var(--green);padding:8px 12px;border-radius:6px;font-weight:700}
.empty{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px;color:var(--muted)}
.guide-panel{display:grid;gap:18px}
.notice-box,.notice-grid article{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;box-shadow:var(--shadow)}
.notice-box h2,.notice-grid h3{margin:0 0 10px}
.notice-box p,.notice-grid p{margin:0;color:var(--muted);line-height:1.75}
.notice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.digest-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.digest-table th,.digest-table td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;line-height:1.6}
.digest-table th{background:#eef6f0;color:#24352f}
.digest-table td{color:#33433d}
.table-link{color:var(--green);font-weight:800}
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;min-height:190px}
.case-thumb{display:block;aspect-ratio:4/3;background:#f0f4f0;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.case-thumb img{width:100%;height:100%;object-fit:contain;display:block}
.case-card h3{margin:8px 0 8px;font-size:18px;line-height:1.35}
.case-card p{margin:0;color:var(--muted);line-height:1.6}
.case-no{display:inline-flex;color:var(--green);font-weight:900;background:#eaf4ee;border-radius:999px;padding:4px 9px;font-size:12px}
.case-actions{margin-top:auto;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.reader-page{display:grid;gap:18px}
.reader-summary,.reader-section,.reader-media,.reader-doc,.reader-actions{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;box-shadow:var(--shadow)}
.reader-media{order:-2;padding:12px}
.reader-summary{order:-1}
.reader-summary{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px}
.reader-kicker{display:inline-flex;color:var(--green);font-weight:900;margin-bottom:10px}
.reader-summary h2,.reader-section h2{margin:0 0 10px}
.reader-summary p,.reader-section li{color:var(--muted);line-height:1.8}
.reader-meta{margin:0;display:grid;gap:10px}
.reader-meta div{border-bottom:1px solid var(--line);padding-bottom:9px}
.reader-meta dt{font-size:12px;color:var(--muted)}
.reader-meta dd{margin:4px 0 0;font-weight:800;word-break:break-word}
.reader-section ul{margin:0;padding-left:20px}
.reader-media img,.reader-media video{display:block;width:100%;max-height:78vh;object-fit:contain;background:#f0f4f0;border-radius:6px}
.reader-media figcaption{margin-top:10px;color:var(--muted);font-size:13px;text-align:center}
.audio-reader audio{width:100%}
.reader-doc{display:grid;gap:10px;justify-items:start}
.reader-doc span{font-size:40px;font-weight:900;color:var(--green)}
.reader-doc p{margin:0;color:var(--muted);line-height:1.7}
.reader-actions{display:flex;justify-content:space-between;gap:12px;align-items:center}
.secondary-link{display:inline-flex;color:var(--green);font-weight:800}
@media (max-width:900px){.library-layout{grid-template-columns:1fr}.category-nav{position:static}.material-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:900px){.notice-grid,.case-grid{grid-template-columns:1fr}.digest-table{font-size:14px}.reader-summary{grid-template-columns:1fr}.reader-actions{align-items:flex-start;flex-direction:column}}
@media (max-width:560px){.material-grid{grid-template-columns:1fr}.library-layout{width:min(100% - 20px,1180px)}}