:root{color-scheme:light;--bg: #ffffff;--surface: #ffffff;--surface-muted: #f8f9fa;--text: #000000;--text-muted: #666666;--line: #e0e0e0;--accent: #606060;--danger: #b13b35;--scrollbar-thumb: #8a8a8a;--scrollbar-track: #f1f3f5}*{box-sizing:border-box}html{background:var(--bg);color:var(--text)}body{margin:0;min-height:100vh}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);border:0;white-space:nowrap}button,input,textarea{font:inherit}:where(a:any-link,button,input,textarea):focus-visible{outline:3px solid #606060;outline-offset:3px}:where(.date-filter-scroller,.timeline-scroller,.history-board){scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track);scrollbar-width:thin}@supports not (scrollbar-color: auto){:where(.date-filter-scroller,.timeline-scroller,.history-board)::-webkit-scrollbar{width:10px;height:10px}:where(.date-filter-scroller,.timeline-scroller,.history-board)::-webkit-scrollbar-thumb{border:2px solid var(--scrollbar-track);border-radius:999px;background:var(--scrollbar-thumb)}:where(.date-filter-scroller,.timeline-scroller,.history-board)::-webkit-scrollbar-track{background:var(--scrollbar-track)}}@media(prefers-contrast:more){:root{--scrollbar-thumb: #000000;--scrollbar-track: #ffffff}}.site-header{padding:1rem 3rem;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:1rem;position:sticky;top:0;z-index:100;background-color:#fff}.site-title,.site-nav a{color:var(--accent);line-height:18.4px}.site-header>div,.site-nav{line-height:18.4px}.site-nav{display:flex;justify-content:flex-end;align-items:center;gap:1rem}.main-shell{padding:1rem}.section-title{margin:0 0 1rem;font-size:1.5rem;line-height:1.3}.event-search{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:.75rem;align-items:end;margin:0 0 1rem}.event-search-field{display:grid;min-width:0}.event-search input{width:100%;min-height:44px;padding:.6rem .75rem;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.event-search button,.event-search-clear{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:.6rem 1rem;border:1px solid var(--accent);border-radius:6px;background:var(--accent);color:#fff;font-weight:700;cursor:pointer}.event-search-clear{background:var(--surface);color:var(--accent)}.event-search-result{margin:-.25rem 0 1rem;color:var(--text-muted)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.card{display:flex;flex-direction:column;width:100%;border-radius:8px;overflow:hidden;cursor:pointer}.card-disabled{background:#f0f0f0;cursor:default;opacity:.5}.thumb{width:100%;height:auto;aspect-ratio:16 / 9;object-fit:cover;background:var(--surface-muted)}.card-title{margin:.5rem 0;color:var(--text);font-size:1rem;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.card-meta{display:grid;gap:.125rem;margin:.5rem 0;color:gray;font-size:.8rem;line-height:1.5;overflow-wrap:anywhere}.text-page{max-width:900px;margin:0 auto;padding:1rem}.text-page h1{margin-top:0}.text-page h2{margin-top:3rem}.text-page section{margin-bottom:4rem}@media(max-width:720px){.site-header{padding:1rem;grid-template-columns:1fr}.site-nav{justify-content:flex-start}.event-search{grid-template-columns:1fr 1fr}.event-search-field{grid-column:1 / -1}.event-search button,.event-search-clear{width:100%}}