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/* DODAI_VOCAB_PDF_MATERIALS_START */
.pdf-materials{background:linear-gradient(180deg,#fff 0,#f4faf8 100%)}
.pdf-materials .section-heading{margin-bottom:34px}
.pdf-selector{display:none;grid-template-columns:auto minmax(180px,260px) auto 1fr;gap:18px;align-items:end;margin-bottom:26px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(16,43,79,.06)}
.pdf-materials.pdf-js-enhanced .pdf-selector{display:grid}
.pdf-selector-block{display:grid;gap:8px;min-width:0;margin:0;padding:0;border:0}
.pdf-selector-label{color:var(--muted);font-size:12px;font-weight:900;letter-spacing:.06em}
.pdf-segmented{display:flex;gap:6px;flex-wrap:wrap}
.pdf-segmented button,.pdf-selector select{min-height:46px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);font:800 15px/1.2 inherit;cursor:pointer}
.pdf-segmented button{min-width:48px;padding:0 16px}
.pdf-selector select{width:100%;padding:0 40px 0 14px}
.pdf-segmented button[aria-pressed="true"]{border-color:var(--blue);background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(30,107,184,.18)}
.pdf-current-stage{align-self:center;margin:0 0 3px;color:var(--blue);font-weight:900;text-align:right}
.pdf-fallback-note{margin:0 0 20px;padding:13px 16px;border-left:4px solid var(--mint);background:var(--aqua);border-radius:0 10px 10px 0;color:var(--muted);font-size:14px}
.pdf-materials.pdf-js-enhanced .pdf-fallback-note{display:none}
.pdf-stage-panels{display:grid;gap:12px}
.pdf-stage-panel{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 10px 28px rgba(16,43,79,.06)}
.pdf-stage-panel[hidden]{display:none}
.pdf-stage-panel>summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px;padding:16px 22px;cursor:pointer;font-size:20px;font-weight:900;list-style:none}
.pdf-stage-panel>summary::-webkit-details-marker{display:none}
.pdf-stage-panel>summary:after{content:"＋";display:grid;place-items:center;width:34px;height:34px;margin-left:auto;border-radius:50%;background:var(--aqua);color:var(--blue);font-size:20px}
.pdf-stage-panel[open]>summary:after{content:"−"}
.pdf-stage-panel>summary small{color:var(--muted);font-size:12px;font-weight:700}
.pdf-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding:0 22px 22px}
.pdf-card{position:relative;display:flex;flex-direction:column;min-height:260px;padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--paper)}
.pdf-badge{align-self:flex-start;padding:4px 9px;border-radius:999px;background:var(--navy);color:#fff;font-size:10px;font-weight:900;letter-spacing:.1em}
.pdf-card h3{margin:16px 0 8px;font-size:20px;line-height:1.4}
.pdf-card p{margin:0 0 16px;color:var(--muted);font-size:14px}
.pdf-file-meta{margin-top:auto;color:var(--muted);font-size:12px}
.pdf-card-link{width:100%;margin-top:12px;border-color:#b7c9d9;color:var(--blue)}
.pdf-card-link:hover{border-color:var(--blue);background:#edf5fd}
@media(max-width:900px){.pdf-selector{grid-template-columns:1fr 1fr}.pdf-current-stage{text-align:left}.pdf-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:767px){.pdf-selector{grid-template-columns:1fr;padding:20px}.pdf-segmented button{flex:1;min-width:52px}.pdf-card-grid{grid-template-columns:1fr;padding:0 14px 14px}.pdf-card{min-height:0}.pdf-stage-panel>summary{padding:14px 16px;font-size:18px}.pdf-stage-panel>summary small{display:none}}
/* DODAI_VOCAB_PDF_MATERIALS_END */