/* Talks。共通のWorks / Notesスタイルに追加する。 */
.talks-page { --talk-ink: #273850; --talk-muted: #617383; }
.talks-page button,
.talks-page input { font-family: inherit; }
.talks-page button { cursor: pointer; }
.talks-page .nav a[aria-current="page"] { color: var(--talk-ink); text-decoration: underline; text-underline-offset: 7px; }
.talks-page .talks-section { margin: 0; padding: 28px 0 0; }
.talks-intro { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 27px; }
.talks-intro > p { color: var(--talk-ink); font-size: 15px; line-height: 1.8; }
.talks-controls { margin-bottom: 28px; }
.talks-page .search-container { margin-bottom: 12px; }
.talks-page .search-box { position: relative; width: 100%; min-height: 54px; padding: 0 0 0 2px; gap: 12px; margin-bottom: 0; border: 0; border-bottom: 1px solid #a9bbc7; border-radius: 0; background: transparent; box-shadow: none; }
.talks-page .search-box::after { content: ''; position: absolute; inset: auto 0 -1px; height: 2px; background: #64adbc; transform: scaleX(0); transform-origin: left; transition: transform 180ms ease-out; pointer-events: none; }
.talks-page .search-box:focus-within { border-color: #a9bbc7; box-shadow: none; }
.talks-page .search-box:focus-within::after { transform: scaleX(1); }
.talks-page .search-box:has(input:focus-visible) { outline: 2px solid #427c8e; outline-offset: 4px; }
.talks-page .search-box input:focus-visible { outline: none; }
.talks-page .search-icon { display: grid; place-items: center; flex: 0 0 20px; color: #617383; opacity: 1; }
.talks-page .search-box:focus-within .search-icon { color: #427c8e; }
.talks-page .search-box input { min-width: 0; width: 100%; min-height: 50px; font-size: 15px; color: var(--talk-ink); }
.talks-page .search-box input::placeholder { color: #697b8a; opacity: 1; }
.talks-page .clear-search { flex: 0 0 44px; min-height: 44px; border-radius: 0; background: transparent; font-size: 23px; }
.talks-page .clear-search:hover { background: #edf3f6; }
.talks-page .clear-search:focus-visible { outline: 2px solid #427c8e; outline-offset: 2px; }
.talks-page .tag-cloud-chip, .talks-page .talk-kind, .talks-page .talk-tags .tag-link { border-radius: 0; }
.talks-page .tag-cloud-chip:focus-visible { outline: 2px solid #427c8e; outline-offset: 3px; }
.talks-page input[type="search"]::-webkit-search-cancel-button { appearance: none; }
.talks-filter-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.talks-page .tag-cloud-container { margin: 0; }
.talks-page .search-stats { white-space: nowrap; }
.talks-page .talks-grid { gap: 34px 26px; }
.talks-page .talk-card { cursor: pointer; }
.talks-page .talk-card:focus-visible { outline-offset: 7px; }
.talk-cover { --cover-color: #90d7e2; display: flex; flex-direction: column; justify-content: space-between; position: relative; isolation: isolate; aspect-ratio: 16 / 9; overflow: hidden; padding: 18px 20px; margin-bottom: 17px; border-radius: 3px; background: var(--cover-color); color: var(--talk-ink); }
.talk-cover[data-tone="lavender"] { --cover-color: #b7bee5; }
.talk-cover[data-tone="sage"] { --cover-color: #bfd8ca; }
.talk-cover[data-tone="peach"] { --cover-color: #e8baa6; }
.talk-cover[data-tone="yellow"] { --cover-color: #efe59b; }
.cover-label { position: relative; z-index: 1; display: flex; justify-content: space-between; font-size: 10px; line-height: 1.5; }
.cover-title { position: relative; z-index: 1; display: block; max-width: 80%; font-size: clamp(26px, 2.5vw, 35px); font-weight: 600; line-height: 1.05; letter-spacing: -.04em; white-space: pre-line; }
.cover-art { position: absolute; inset: 0; z-index: 0; pointer-events: none; transform: translateY(var(--art-shift, 0px)) rotate(var(--art-turn, 0deg)) scale(var(--art-scale, 1)); }
.cover-art span { position: absolute; display: block; border: 1.5px solid var(--talk-ink); }
.cover-art span:nth-child(1) { width: 37%; aspect-ratio: 1; border-radius: 50%; top: 18%; right: -8%; }
.cover-art span:nth-child(2) { width: 30%; height: 46%; top: 28%; right: 2%; transform: rotate(-12deg); background: rgba(250, 253, 254, .28); }
.cover-art span:nth-child(3) { width: 23%; height: 1px; right: 2%; top: 66%; border: 0; background: var(--talk-ink); transform: rotate(-12deg); }
.talk-cover[data-art="atlas"] .cover-art span:nth-child(1) { border-radius: 0; transform: rotate(30deg); }
.talk-cover[data-art="atlas"] .cover-art span:nth-child(2) { transform: rotate(-25deg); }
.talk-cover[data-art="signals"] .cover-art span:nth-child(2) { border-radius: 50%; background: none; transform: none; width: 26%; height: auto; aspect-ratio: 1; top: 28%; right: -2%; }
.talk-cover[data-art="signals"] .cover-art span:nth-child(3) { top: 46%; right: 3%; transform: rotate(45deg); }
.talk-cover[data-art="layers"] .cover-art span:nth-child(1) { border-radius: 0; top: 2%; transform: rotate(-12deg); }
.talk-cover[data-art="layers"] .cover-art span:nth-child(2) { top: 35%; right: -1%; transform: rotate(12deg); }
.talk-cover[data-art="terminal"] .cover-art span:nth-child(1) { border-radius: 3px; width: 36%; aspect-ratio: 1.1; transform: rotate(12deg); }
.talk-cover[data-art="terminal"] .cover-art span:nth-child(2) { border-radius: 3px; top: 36%; }
.talk-cover[data-art="shape"] .cover-art span:nth-child(1) { border-radius: 48% 48% 0 0; }
.talk-cover[data-art="shape"] .cover-art span:nth-child(2) { transform: rotate(30deg); background: rgba(250, 253, 254, .28); }
.talk-cover[data-art="orbits"] .cover-art span:nth-child(1) { border-radius: 50%; top: 5%; right: -12%; width: 43%; }
.talk-cover[data-art="orbits"] .cover-art span:nth-child(2) { border-radius: 50%; aspect-ratio: 1; height: auto; width: 35%; top: 30%; right: -5%; background: none; }
.talk-cover[data-art="orbits"] .cover-art span:nth-child(3) { top: 38%; right: 3%; transform: rotate(-35deg); }
.talk-cover[data-art="steps"] .cover-art span:nth-child(1) { border-radius: 0; width: 34%; top: 12%; right: -9%; }
.talk-cover[data-art="steps"] .cover-art span:nth-child(2) { width: 23%; height: 40%; top: 36%; right: 6%; transform: none; }
.talk-cover[data-art="steps"] .cover-art span:nth-child(3) { top: 20%; right: -2%; transform: rotate(90deg); }
.talk-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; color: var(--talk-muted); font-size: 12px; }
.talk-kind { color: #526779; border: 1px solid #d5dfe6; border-radius: 4px; padding: 1px 7px; font-size: 11px; }
.talks-page .talk-card h2 { margin: 10px 0 9px; font-size: 19px; line-height: 1.65; font-weight: 550; letter-spacing: -.02em; overflow-wrap: anywhere; }
.talks-page .talk-card:hover h2 { text-decoration: underline; text-underline-offset: 5px; }
.talk-event { display: block; margin-bottom: 9px; color: var(--talk-muted); font-size: 12px; }
.talk-description { font-size: 14px; line-height: 1.8; color: #647582; }
.talk-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.talks-page .talk-tags .tag-link { font-size: 11px; }
.talks-empty { padding: 45px 0 50px; border-block: 1px solid #d3dde4; text-align: center; }
.talks-empty > p { color: var(--talk-ink); }
.talks-empty .empty-hint { margin: 8px 0 20px; color: var(--talk-muted); font-size: 14px; }
.talks-footnote { max-width: 70ch; margin-top: 29px; font-size: 12px; line-height: 1.8; color: var(--talk-muted); }
.talks-noscript { padding: 24px 0; font-size: 14px; }
.talks-page footer { margin-top: 25px; padding: 35px 18px; }
.talks-page footer p { font-size: 11px; }

/* 標準dialogのフォーカス制御とEsc操作を使用する。 */
.talk-dialog { width: min(920px, calc(100% - 40px)); max-height: calc(100dvh - 56px); margin: auto; padding: 0 30px 28px; overflow-y: auto; border: 1px solid #c5d2dc; border-radius: 6px; background: #fafdfe; color: var(--talk-ink); box-shadow: 0 18px 70px rgba(39, 56, 80, .16); }
.talk-dialog::backdrop { background: rgba(39, 56, 80, .34); backdrop-filter: blur(3px); }
.talk-dialog:not([open]) { display: none; }
.dialog-topbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 13px 0; border-bottom: 1px solid #d7e1e7; }
.dialog-close { min-width: 44px; min-height: 44px; flex: 0 0 auto; padding: 8px 12px; border: 1px solid #c5d2dc; border-radius: 5px; background: transparent; color: var(--talk-ink); font-size: 12px; line-height: 1.5; }
.dialog-close:hover { background: #edf3f6; }
.dialog-heading { padding: 25px 0 23px; }
.dialog-meta { margin-bottom: 10px; color: var(--talk-muted); font-size: 12px; }
.dialog-heading .dialog-meta { margin: 8px 0 0; font-size: 11px; }
.dialog-heading h2 { font-size: clamp(22px, 3.3vw, 31px); font-weight: 550; line-height: 1.55; overflow-wrap: anywhere; }
.dialog-summary { max-width: 65ch; margin-top: 13px; color: var(--talk-muted); font-size: 14px; line-height: 1.9; }
.deck-viewer { min-width: 0; margin-top: 14px; }
.pdf-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.pdf-size-controls { display: flex; align-items: center; gap: 10px; }
.pdf-zoom-controls { display: flex; align-items: center; gap: 9px; }
.pdf-zoom-controls .btn-outline { min-width: 44px; padding-inline: 10px; font-size: 20px; }
.pdf-zoom-level { display: inline-grid; place-items: center; min-width: 46px; min-height: 32px; text-align: center; color: var(--talk-muted); font-size: 12px; cursor: ns-resize; user-select: none; }
.pdf-zoom-level[aria-disabled="true"] { cursor: default; }
.pdf-zoom-level:hover:not([aria-disabled="true"]) { color: var(--talk-ink); background: #edf3f6; }
.talks-page .pdf-zoom-level:focus-visible { outline: 2px solid #427c8e; outline-offset: 2px; }
.pdf-status { min-height: 22px; margin: 11px 0 8px; color: var(--talk-muted); font-size: 12px; line-height: 1.8; }
.pdf-status.is-error { color: #8a4933; }
.pdf-status:empty { display: none; }
.pdf-viewport { width: 100%; min-width: 0; overflow: auto; overscroll-behavior: contain; overflow-anchor: none; touch-action: pan-x pan-y; border: 1px solid #d5dfe6; border-radius: 3px; background: #edf3f6; }
.pdf-viewport:empty { min-height: 180px; }
.pdf-viewport canvas { display: block; max-width: none; margin-inline: auto; }
.pdf-sheet { position: relative; margin: 0 auto 14px; overflow: hidden; background: #fff; }
.pdf-sheet:last-child { margin-bottom: 0; }
.pdf-sheet canvas { width: 100%; height: 100%; }
.pdf-sheet-error { position: absolute; inset: 0; display: grid; place-items: center; padding: 20px; color: #8a4933; font-size: 12px; }
.pdf-viewport.is-pannable { cursor: grab; }
.pdf-viewport.is-panning { cursor: grabbing; user-select: none; }
.talks-page .pdf-viewport:focus-visible { outline: 2px solid #427c8e; outline-offset: 4px; }
.pdf-page-text, .pdf-status:not(.is-error) { position: absolute; width: 1px; height: 1px; min-height: 0; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); clip-path: inset(50%); white-space: pre-line; border: 0; }
.deck-controls { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.deck-count { color: var(--talk-muted); font-size: 12px; }
.talks-page button:disabled { cursor: default; color: #647582; border-color: #d5dfe6; background: #f0f4f6; opacity: .65; }
.dialog-resources { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 25px; padding-top: 20px; border-top: 1px solid #d7e1e7; }
.dialog-resources p { flex: 1 1 260px; font-size: 12px; line-height: 1.7; color: var(--talk-muted); }
.talks-menu-open { overflow: hidden; }

/* 4案は一つのviewerを移動して比較する。 */
.view-choice { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 23px; }
.view-choice a { display: inline-flex; align-items: center; min-height: 42px; padding: 8px 13px; border: 1px solid #d5dfe6; border-radius: 5px; color: #526779; font-size: 13px; }
.view-choice a[aria-current="true"] { background: #d8edf0; border-color: #8fbac5; color: #233d4c; }
.talks-layout, .talk-viewer { min-width: 0; }
.talks-page .talk-card.is-selected { border-bottom-color: #6d9daa; }
.viewer-description { padding-top: 21px; border-top: 1px solid #d7e1e7; margin-top: 22px; }
.viewer-description .dialog-summary { margin-top: 0; }
.talk-detail-host { padding-top: 18px; }
.talk-detail-host .talk-viewer { max-width: 1040px; margin-inline: auto; }
.is-talk-detail .archive-banner-wrap,
.is-talk-detail .talks-list-section,
.is-talk-detail #talks-list-section { display: none; }
.talks-page.is-talk-detail .content-wrapper { padding-top: 88px; }
.talks-page.is-talk-detail .view-choice { padding-top: 12px; }
.talk-detail-host .dialog-heading { padding-block: 18px; }
.talk-detail-host .dialog-heading h2 { font-size: clamp(22px, 3.3vw, 32px); }
.has-talk-panel .talks-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .85fr); gap: 28px; align-items: start; }
.has-talk-panel .talks-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 20px; }
.has-talk-panel .cover-title { font-size: clamp(23px, 2.1vw, 30px); }
.talk-panel-host { position: sticky; top: 96px; max-height: calc(100dvh - 116px); overflow: auto; min-width: 0; margin-top: 28px; padding: 0 20px 24px; border: 1px solid #c5d2dc; border-radius: 5px; background: #fafdfe; }
.talk-panel-host .dialog-topbar { position: sticky; top: 0; z-index: 2; background: #fafdfe; }
.talk-panel-host .dialog-heading { padding-block: 15px; }
.talk-panel-host .dialog-heading h2 { font-size: 21px; }
.talk-panel-host .pdf-size-controls > .btn-outline { padding-inline: 8px; font-size: 12px; }
.talk-inline-host { grid-column: 1 / -1; min-width: 0; padding: 0 24px 26px; border: 1px solid #c5d2dc; border-radius: 5px; background: #fafdfe; }
.talk-inline-host .dialog-heading { padding-block: 17px; }
.talk-inline-host .talk-viewer { max-width: 960px; margin-inline: auto; }
.talks-page .talk-dialog { width: 100%; max-width: 100%; height: 100dvh; max-height: 100dvh; margin: 0; padding: 0 24px 26px; border: 0; border-radius: 0; }
.talk-dialog .talk-viewer { max-width: 1320px; margin-inline: auto; }
.talk-dialog .dialog-heading { padding: 8px 0 10px; }
.talk-dialog .dialog-heading h2 { font-size: clamp(20px, 2.5vw, 25px); }
.talk-dialog .dialog-meta { margin-bottom: 4px; }
.talk-dialog .dialog-topbar { padding-block: 8px; }
.talk-dialog .pdf-viewport { max-height: calc(100dvh - 205px); }
.talk-dialog .viewer-header { position: sticky; top: 0; z-index: 3; padding-bottom: 8px; background: #fafdfe; }
.talks-viewer-modal-open,
.talks-panel-mobile-open { overflow: hidden; }

@media (max-width: 768px) {
  .talks-page .nav ul { gap: 1.8rem; }
  .talks-page .nav li:nth-child(6) { --menu-delay: 400ms; }
  .has-talk-panel .talks-layout { display: block; }
  .talk-panel-host { position: fixed; inset: 72px 0 0; z-index: 900; margin: 0; padding-inline: 18px; max-height: none; border-radius: 0; border-inline: 0; }
  .has-talk-panel .talks-grid { grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
}
@media (max-width: 600px) {
  .view-choice { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
  .view-choice a { justify-content: center; min-width: 0; padding-inline: 8px; font-size: 12px; }
  .talks-intro { flex-direction: column; gap: 8px; margin-bottom: 23px; }
  .talks-intro > p { font-size: 14px; }
  .talks-filter-row { flex-wrap: wrap; gap: 13px; }
  .talks-page .tag-cloud-chip { padding-inline: 10px; }
  .talks-page .search-stats { width: 100%; }
  .talks-page .search-box { padding-left: 2px; gap: 9px; }
  .talks-page .search-box input { font-size: 13px; }
  .talks-page .talks-grid { grid-template-columns: minmax(0, 1fr); gap: 29px; }
  .talk-cover { padding: 18px 20px; }
  .cover-title { font-size: 35px; }
  .talks-page .talk-card h2 { font-size: 18px; }
  .talk-dialog { width: calc(100% - 24px); max-height: calc(100dvh - 24px); padding-inline: 16px; padding-bottom: 20px; }
  .talks-page .talk-dialog { width: 100%; max-height: 100dvh; padding-inline: 16px; }
  .dialog-heading { padding-block: 20px; }
  .dialog-summary { font-size: 13px; }
  .pdf-toolbar { gap: 8px; }
  .pdf-size-controls { gap: 8px; }
  .pdf-size-controls > .btn-outline { padding-inline: 8px; font-size: 12px; }
  .pdf-zoom-controls { gap: 6px; }
  .pdf-viewport:empty { min-height: 150px; }
  .dialog-resources { margin-top: 20px; }
  .talk-inline-host { padding-inline: 13px; }
  .talk-inline-host .pdf-size-controls > .btn-outline { padding-inline: 6px; font-size: 11px; }
  .has-talk-panel .talks-grid { grid-template-columns: minmax(0, 1fr); }
}
/* 採用したB案。閲覧領域を先に確保し、選択しても一覧の列数を変えない。 */
.talks-page[data-view="panel"] .view-choice { display: none; }
.talks-page[data-view="panel"] .talks-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px; align-items: start; }
.talks-page[data-view="panel"] .talks-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 18px; }
.talks-page[data-view="panel"] .talks-intro { flex-direction: column; gap: 5px; margin-bottom: 20px; }
.talks-page[data-view="panel"] .talks-filter-row { flex-direction: column; align-items: stretch; gap: 9px; }
.talks-page[data-view="panel"] .search-stats { font-size: 11px; }
.talks-page[data-view="panel"] .search-box { min-height: 48px; }
.talks-page[data-view="panel"] .search-box input { min-height: 44px; font-size: 13px; }
.talks-page[data-view="panel"] .tag-cloud-chip { min-height: 40px; padding: 7px 10px; font-size: 12px; }
.talks-page[data-view="panel"] .cover-title { font-size: clamp(22px, 2vw, 28px); }
.talks-page[data-view="panel"] .talk-cover { padding: 14px; margin-bottom: 14px; }
.talks-page[data-view="panel"] .cover-label { font-size: 9px; }
.talks-page[data-view="panel"] .talk-card h2 { min-height: 2.9em; margin-block: 10px 7px; font-size: 17px; line-height: 1.5; text-wrap: balance; }
.title-phrase { display: inline-block; max-width: 100%; overflow-wrap: anywhere; }
.talks-page[data-view="panel"] .talk-description { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; font-size: 12px; line-height: 1.8; }
.talks-page[data-view="panel"] .talk-tags { gap: 5px; margin-top: 12px; }
.talks-page[data-view="panel"] .talk-event { font-size: 11px; }
.talks-page[data-view="panel"] .talk-card { transition: border-color 180ms ease; }
.talks-page[data-view="panel"] .talk-card.is-selected { border-bottom-color: #4e8898; }
.talks-page[data-view="panel"] .talk-card:hover h2 { text-decoration: underline; }
.cover-art { transition: transform 220ms ease; }
@media (hover: hover) { .talk-card:hover .cover-art { transform: translateY(calc(var(--art-shift, 0px) - 3px)) rotate(var(--art-turn, 0deg)) scale(var(--art-scale, 1)); } }
.talks-page[data-view="panel"] .talk-panel-host { top: 88px; min-height: 380px; max-height: calc(100dvh - 108px); margin-top: 28px; padding: 0 22px 22px; border: 0; border-left: 1px solid #d3dde4; border-radius: 0; background: transparent; scrollbar-width: thin; scrollbar-color: #b4c8d1 transparent; }
.reader-empty { display: grid; justify-items: center; align-content: center; min-height: 355px; padding: 26px 0; text-align: center; }
.reader-empty svg { width: min(220px, 75%); height: auto; margin-bottom: 15px; }
.reader-empty p { color: #425c70; font-size: 15px; }
.reader-actions { display: flex; flex: 0 0 auto; gap: 7px; }
.reader-expand { display: inline-flex; gap: 7px; align-items: center; justify-content: center; font-size: 11px; }
.reader-expand svg { flex: 0 0 auto; }
.reader-filter-note { padding-top: 7px; color: #6b7784; font-size: 11px; }
.talk-panel-host .viewer-header { position: sticky; top: 0; z-index: 3; padding-bottom: 12px; border-bottom: 0; background: #fafdfe; }
.talk-panel-host .dialog-topbar { position: static; padding-block: 12px; border: 0; }
.talk-panel-host .dialog-heading { padding: 3px 0 16px; }
.talk-panel-host .dialog-heading h2 { font-size: 20px; font-weight: 550; line-height: 1.5; }
.talk-panel-host .pdf-toolbar { gap: 10px 12px; }
.talk-panel-host .pdf-toolbar .btn-outline { min-width: 44px; min-height: 44px; padding-inline: 8px; font-size: 12px; }
.talk-panel-host .pdf-toolbar .pdf-zoom-controls .btn-outline { font-size: 20px; }
.talk-panel-host .deck-controls { gap: 8px; }
.talk-panel-host .pdf-size-controls { gap: 7px; }
.talk-panel-host .pdf-zoom-controls { gap: 5px; }
.pdf-page-jump { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.pdf-page-jump input { width: 40px; height: 42px; min-width: 0; border: 1px solid #ccdbe3; border-radius: 4px; background: transparent; color: #273850; text-align: center; font: inherit; font-size: 12px; appearance: textfield; }
.pdf-page-jump input::-webkit-inner-spin-button, .pdf-page-jump input::-webkit-outer-spin-button { appearance: none; margin: 0; }
.talks-page .pdf-page-jump input:focus-visible { outline: 2px solid #427c8e; outline-offset: 3px; }
.pdf-viewport { position: relative; aspect-ratio: var(--pdf-ratio, 16 / 9); }
.pdf-viewport:empty { min-height: 0; }
.pdf-viewport:empty::before { content: 'PDFを読み込み中…'; position: absolute; inset: 0; display: grid; place-items: center; color: #6b7f8e; font-size: 12px; }
.deck-viewer:has(.pdf-status.is-error) .pdf-viewport:empty::before { content: 'PDFを表示できません'; }
.pdf-viewport[aria-busy="true"]::after { content: ''; position: absolute; top: 0; left: 0; width: 35%; height: 2px; background: #67b7c8; animation: pdf-progress 850ms ease-in-out infinite; }
@keyframes pdf-progress { from { transform: translateX(-110%); } to { transform: translateX(390%); } }
.talk-panel-host .pdf-status { font-size: 11px; }
.talk-panel-host .viewer-description { margin-top: 20px; }
.talk-panel-host .dialog-summary { font-size: 13px; }
.talk-panel-host .dialog-resources { gap: 8px; }
.talk-panel-host .dialog-resources p { flex-basis: 100%; }
/* 線は領域の関係を示す箇所に絞り、操作は余白・hover・focusで伝える。 */
.talks-page[data-view="panel"] .talk-viewer .dialog-topbar { border: 0; }
.talks-page[data-view="panel"] .talk-viewer .pdf-viewport { border: 0; border-radius: 0; background: transparent; }
.talks-page[data-view="panel"] .talk-viewer .dialog-close,
.talks-page[data-view="panel"] .talk-viewer .pdf-toolbar .btn-outline { border: 0; background: transparent; }
.talks-page[data-view="panel"] .talk-viewer .dialog-close:hover,
.talks-page[data-view="panel"] .talk-viewer .pdf-toolbar .btn-outline:hover:not(:disabled) { background: #edf3f6; }
.talks-page[data-view="panel"] .talk-viewer .pdf-toolbar button:disabled { border: 0; background: transparent; }
.talks-page[data-view="panel"] .talk-viewer .pdf-page-jump input { border: 0; border-bottom: 1px solid #a8bdc8; border-radius: 0; }
.talks-page[data-view="panel"] .talk-viewer .viewer-description { margin-top: 26px; padding-top: 22px; border-top-color: #d3dde4; }
.talks-page[data-view="panel"] .talk-viewer .talk-tags { gap: 14px; }
.talks-page[data-view="panel"] .talk-viewer .talk-tags .tag-link { padding: 0; border: 0; border-radius: 0; background: transparent; cursor: default; }
.talks-page[data-view="panel"] .talk-viewer .dialog-resources { margin-top: 18px; padding-top: 0; border: 0; }
.talks-page[data-view="panel"] .talk-viewer .dialog-resources .btn-outline { padding-inline: 0; border: 0; border-radius: 0; background: transparent; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.talks-page[data-view="panel"] .talk-viewer .dialog-resources .btn-outline:hover { color: #386e7e; }
@media (max-width: 900px) {
  .talks-page[data-view="panel"] .talks-layout { display: block; }
  .talks-page[data-view="panel"] .talks-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 22px; }
  .talks-page[data-view="panel"] .talks-intro { flex-direction: row; justify-content: space-between; }
  .talks-page[data-view="panel"] .talks-filter-row { flex-direction: row; align-items: center; }
  .talks-page[data-view="panel"] .talk-panel-host { position: fixed; inset: 0; z-index: 1200; min-height: 0; max-height: none; margin: 0; padding: env(safe-area-inset-top, 0px) 18px max(24px, env(safe-area-inset-bottom, 0px)); border: 0; border-radius: 0; background: #fafdfe; }
  .talk-panel-host .viewer-header { padding-top: 3px; }
  .talk-panel-host .dialog-heading h2 { font-size: 20px; }
}
@media (max-width: 600px) {
  .talks-page[data-view="panel"] .talks-grid { grid-template-columns: minmax(0, 1fr); }
  .talks-page[data-view="panel"] .talks-intro { flex-direction: column; }
  .talks-page[data-view="panel"] .talks-filter-row { flex-direction: column; align-items: stretch; }
  .talks-page[data-view="panel"] .cover-title { font-size: 33px; }
  .talks-page[data-view="panel"] .talk-cover { padding: 18px 20px; }
  .talks-page[data-view="panel"] .talk-card h2 { min-height: 0; font-size: 18px; }
  .talk-panel-host .dialog-heading { padding-bottom: 13px; }
  .talk-panel-host .dialog-heading h2 { font-size: 18px; }
}
@media (max-width: 360px) { .reader-expand span { display: none; } }
@media (prefers-reduced-motion: reduce) {
  .talks-page { scroll-behavior: auto; }
  .talks-page *, .talks-page *::before, .talks-page *::after { transition: none !important; animation: none !important; }
  html:has(.talks-page) { scroll-behavior: auto; }
}

@media (prefers-reduced-motion: reduce) {
    .talks-page .search-box::after { transition: none; }
}

.talk-cover.has-cover-image { padding: 0; background: #000; }
.talk-cover-image { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: contain; }