/* Original ETWiki study resource-card declarations, reused unchanged. */
:root{--bg:#f0faf4;--surface:#fff;--surface2:#f5fdf8;--surface3:#eaf7f0;--border:#b2dfcc;--border2:#c8ead8;--accent:#2e7d52;--text:#1a3326;--text-sub:#4a7a62;--text-dim:#8ab8a0}
.resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.resource-card{display:flex;flex-direction:column;min-height:230px;padding:20px;background:var(--surface);border:1.5px solid var(--border);border-radius:14px;color:inherit;text-decoration:none;box-shadow:0 2px 10px rgba(46,125,82,.07);transition:transform .16s,border-color .16s,box-shadow .16s;}
.resource-card:hover{transform:translateY(-2px);border-color:var(--card-accent,var(--accent));box-shadow:0 8px 22px rgba(46,125,82,.13);}
.resource-card.edu{--card-accent:#2e7d52;}
.resource-card.ling{--card-accent:#3b3f86;}
.resource-card.phon{--card-accent:#5b21b6;}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:14px;}
.card-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:21px;background:var(--surface3);border:1px solid var(--border2);}
.card-state{font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:700;letter-spacing:.6px;color:var(--card-accent);padding:3px 8px;border:1px solid color-mix(in srgb,var(--card-accent) 28%,transparent);border-radius:10px;background:color-mix(in srgb,var(--card-accent) 7%,white);}
.resource-card h3{font-size:19px;line-height:1.35;margin-bottom:3px;}
.card-en{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-dim);margin-bottom:10px;}
.card-desc{font-size:13.5px;color:var(--text-sub);margin-bottom:16px;flex:1;}
.card-meta{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:16px;}
.card-meta span{font-size:11px;color:var(--text-sub);padding:3px 8px;border-radius:9px;background:var(--surface2);border:1px solid var(--border2);}
.card-link{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--border);font-size:13px;font-weight:700;color:var(--card-accent);}

.resource-card{box-sizing:border-box;min-width:0}.resource-card a{color:inherit}.resource-card:not(a):hover{transform:none}.resource-grid{margin:0}.book-title-link{text-decoration:none}.book-title-link:hover{text-decoration:underline}.book-code{font:700 15px system-ui}.book-actions{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:12px;border-top:1px solid var(--border)}.book-actions a,.book-actions button{display:flex;align-items:center;justify-content:center;min-height:44px;padding:9px 12px;border:1px solid var(--border);border-radius:9px;text-decoration:none;background:var(--surface2);color:var(--accent);font:600 14px inherit;box-sizing:border-box;white-space:normal}.book-actions .exam-action{background:#fff4bd;border-color:#d6b95e;color:#5a4814}.book-actions button:disabled{opacity:.65;color:#637469;background:#f2f5f3;cursor:not-allowed}.availability-note{font-size:12px;color:var(--text-sub);margin:10px 0 0}.book-heading{border:0;padding:0;background:transparent;color:var(--text);font-size:19px;font-weight:750;text-align:left;min-height:44px;cursor:pointer}.book-card[data-selected=true]{border:2px solid var(--accent);background:#fff}.book-card{aspect-ratio:auto;align-items:stretch;justify-content:flex-start}.book-card .card-meta{display:flex}.exam-feature{background:#fffbec;border-color:#cfb85d;min-height:0;margin:0 0 24px;padding:20px}.exam-feature h2{font-size:24px;line-height:1.3;margin:0 0 12px;color:#3f381e}.brand-image-panel{text-align:center;margin:0 0 16px}.ox-brand-visual{display:block;width:min(100%,300px);height:auto;aspect-ratio:3/2;object-fit:contain;margin:auto;border-radius:10px}.exam-subjects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.exam-subjects a{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:14px 8px;min-height:76px;border:1px solid #d2b65b;border-radius:10px;text-decoration:none;background:#fff7d3;color:#4b3d17;box-sizing:border-box;text-align:center}.exam-subjects strong{font-size:17px}.exam-subjects span{font-size:13px}.combined-entry{padding:20px;background:#fff;border:1.5px solid var(--border);border-radius:14px;margin:0 0 28px}.combined-entry h2{font-size:19px;margin:0 0 7px}.combined-entry p{font-size:14px;color:var(--text-sub);margin:0 0 10px}.combined-entry a{display:inline-flex;align-items:center;min-height:44px;font-weight:700;color:var(--accent);text-underline-offset:4px}.theory-paths{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0}.theory-paths a{display:inline-flex;align-items:center;min-height:44px;padding:6px 10px;border:1px solid var(--border);border-radius:8px;color:var(--accent);font-size:13px}.subject-section{margin:0 0 30px}.section-head h2{font-size:19px;margin:0 0 12px}.resource-card :is(a,button):focus-visible,.exam-subjects a:focus-visible,.combined-entry a:focus-visible{outline:3px solid #326dcc;outline-offset:3px}.book-grid{display:block}.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}
@media(max-width:640px){.resource-grid{grid-template-columns:1fr}.resource-card{min-height:0}.exam-feature{padding:17px}.ox-brand-visual{width:min(100%,255px)}.exam-subjects{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.exam-subjects strong{font-size:16px}.exam-subjects a{padding:12px 5px;min-height:76px}.book-actions{gap:7px}.book-card{aspect-ratio:auto}}
@media(prefers-reduced-motion:reduce){.resource-card{transition:none}.resource-card:hover{transform:none}}