:root{color-scheme:light;--bg: #f7f7f5;--surface: #ffffff;--ink: #222222;--muted: #6b6b66;--line: #e7e5df;--accent: #3f6f63;--accent-soft: #eef4f1;--youtube: #c4302b;--blue: #0066cc}*{box-sizing:border-box}html{background:var(--bg);color:var(--ink);font-family:Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,system-ui,sans-serif}body{margin:0;line-height:1.8}a{color:var(--ink);text-decoration-color:#b8b5ad;text-underline-offset:.2em}a:hover{color:var(--accent);text-decoration-color:currentColor}.icon{width:1.12em;height:1.12em;flex:0 0 auto;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.8}.wrap{width:min(1080px,calc(100% - 32px));margin-inline:auto}.narrow{width:min(880px,calc(100% - 32px))}.skip-link{position:absolute;left:12px;top:12px;transform:translateY(-160%);background:var(--ink);color:#fff;padding:8px 12px;z-index:10}.skip-link:focus{transform:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.site-header{position:sticky;top:0;z-index:5;background:#f7f7f5f5;border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}.brand{color:var(--ink);font-weight:700;text-decoration:none;white-space:nowrap}.brand-mark{display:none}.site-nav{display:flex;gap:18px;overflow-x:auto;white-space:nowrap}.site-nav a{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.92rem;text-decoration:none}.site-nav a:hover{color:var(--ink)}.site-nav a[aria-current=page]{color:var(--ink);font-weight:700}.hero{padding:72px 0 32px}.landing-hero{min-height:68vh;display:grid;place-items:center;padding:88px 0 72px;background:radial-gradient(circle at 50% 0%,#fff 0,#fff0 42%),linear-gradient(180deg,#fdfdfc,#f3f3f0);border-bottom:1px solid var(--line);text-align:center}.landing-inner{width:min(980px,calc(100% - 32px))}.landing-hero h1{font-size:clamp(2.8rem,7vw,6.2rem);font-weight:780;letter-spacing:-.02em;line-height:1.06;margin-inline:auto;max-width:10.5em}.landing-lead{color:var(--muted);font-size:clamp(1.08rem,2vw,1.42rem);line-height:1.75;margin:24px auto 0;max-width:660px}.cta-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:34px}.cta-row.left{justify-content:flex-start}.share-actions{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));z-index:20;display:grid;justify-items:end}.share-menu-toggle{display:inline-grid;place-items:center;width:52px;height:52px;border:1px solid rgba(34,34,34,.1);border-radius:50%;background:var(--blue);color:#fff;box-shadow:0 12px 28px #2223;cursor:pointer;font:inherit;transition:background .16s ease,box-shadow .16s ease,transform .16s ease}.share-menu-toggle:hover,.share-menu-toggle:focus-visible{background:#0057b8;box-shadow:0 14px 34px #2222223d;transform:translateY(-1px)}.share-menu-toggle .icon,.share-menu-close{grid-area:1 / 1;transition:opacity .14s ease,transform .14s ease}.share-menu-close{font-size:1.7rem;font-weight:650;line-height:1;opacity:0;transform:scale(.84) rotate(-12deg)}.share-actions[data-open=true] .share-menu-toggle .icon{opacity:0;transform:scale(.84) rotate(12deg)}.share-actions[data-open=true] .share-menu-close{opacity:1;transform:scale(1) rotate(0)}.share-panel{position:absolute;right:0;bottom:calc(100% + 12px);display:grid;gap:8px;width:min(278px,calc(100vw - 32px));padding:12px;border:1px solid rgba(34,34,34,.1);border-radius:12px;background:#fffffff5;box-shadow:0 18px 44px #22222229;opacity:0;pointer-events:none;transform:translateY(8px) scale(.98);transform-origin:bottom right;transition:opacity .14s ease,transform .14s ease}.share-actions[data-open=true] .share-panel{opacity:1;pointer-events:auto;transform:translateY(0) scale(1)}.share-heading{color:var(--muted);font-size:.78rem;font-weight:700;line-height:1.2;padding:0 4px 1px}.share-button{display:inline-flex;align-items:center;justify-content:flex-start;gap:7px;width:100%;min-height:38px;border:1px solid #d9d9d5;border-radius:999px;background:#ffffffd1;color:var(--ink);cursor:pointer;font:inherit;font-size:.9rem;font-weight:700;line-height:1.2;padding:7px 13px;text-decoration:none}.brand-icon{width:1.12em;height:1.12em;flex:0 0 auto;fill:currentColor}.share-button:hover,.share-button:focus-visible{border-color:#c4c4bf;color:var(--accent)}.share-copy{background:#eef4f1db;border-color:#dbe8e3;color:#315349}.share-button[href*="twitter.com"]{color:#111}.share-button[href*="line.me"]{color:#06c755}.share-button[href*="facebook.com"]{color:#1877f2}.share-status{color:var(--muted);font-size:.88rem;min-height:1.4em;padding-inline:4px}.breadcrumbs{color:var(--muted);font-size:.88rem;padding-top:18px}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}.breadcrumbs li{display:inline-flex;align-items:center;gap:6px}.breadcrumbs li+li:before{color:#aaa69c;content:"/"}.breadcrumbs a{color:var(--muted);text-decoration:none}.breadcrumbs a:hover,.breadcrumbs span{color:var(--ink)}.breadcrumbs+.hero{padding-top:32px}.primary-cta,.secondary-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;border-radius:999px;font-weight:700;padding:8px 22px;text-decoration:none}.primary-cta{background:var(--blue);color:#fff}.primary-cta:hover{background:#0057b8;color:#fff}.secondary-cta{background:#fff;border:1px solid #d9d9d5;color:var(--blue)}.secondary-cta:hover{color:#0057b8;border-color:#c4c4bf}.landing-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;padding:36px 0 10px}.feature-card{min-height:180px;display:flex;flex-direction:column;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:18px;color:var(--ink);padding:24px;text-decoration:none;transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}.feature-card:hover{border-color:#d4d1c8;color:var(--ink);box-shadow:0 18px 42px #22222214;transform:translateY(-2px)}.feature-card span{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:700}.feature-card strong{font-size:clamp(1.28rem,2vw,1.8rem);line-height:1.35}.feature-card small{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.92rem;font-weight:700}.landing-note{color:var(--muted);padding:24px 0 44px;text-align:center}.eyebrow{color:var(--accent);font-size:.82rem;font-weight:700;letter-spacing:0;margin:0 0 12px}h1,h2,h3{line-height:1.35;letter-spacing:0}h1{font-size:clamp(2rem,5vw,3.4rem);font-weight:750;margin:0}h2{font-size:clamp(1.25rem,2.5vw,1.7rem);margin:0 0 16px}h3{font-size:1rem;margin:0 0 8px}p{margin:0 0 14px}.lead{color:var(--muted);font-size:1.06rem;margin-top:18px}.notice{background:var(--accent-soft);border:1px solid #dbe8e3;border-radius:6px;color:#334842;margin-top:24px;padding:14px 16px}.section{padding:30px 0}.grid{display:grid;gap:18px}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:18px}.stat{display:grid;gap:6px}.stat strong{font-size:1.9rem;line-height:1}.pill-list{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0}.pill-list a,.tag,.status{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font-size:.9rem;min-height:30px;padding:2px 10px;text-decoration:none}.status{background:var(--accent-soft);border-color:#dbe8e3;color:#315349}.timeline{display:grid;gap:0}.year-list{display:grid;gap:12px}.year-card{display:grid;grid-template-columns:84px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:18px;text-decoration:none;transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}.year-card:hover{border-color:#d4d1c8;box-shadow:0 12px 30px #2222220f;color:var(--ink);transform:translateY(-1px)}.year-card h2{margin-bottom:6px}.year-card p{color:var(--muted);margin:0 0 8px}.year-card p:last-child{margin-bottom:0}.timeline-item{display:grid;grid-template-columns:84px 1fr;gap:18px;border-top:1px solid var(--line);padding:18px 0}.timeline-item:last-child{border-bottom:1px solid var(--line)}.year-number{color:var(--ink);font-weight:750;text-decoration:none}.table-wrap{max-height:min(72vh,760px);overflow:auto;border:1px solid var(--line);border-radius:6px;background:#fff}.table-scroll-shell,.scroll-hint-shell{position:relative}.table-scroll-shell:after,.scroll-hint-shell:after{position:absolute;top:0;right:0;bottom:0;width:36px;background:linear-gradient(90deg,rgba(247,247,245,0),var(--bg));content:"";pointer-events:none}.table-scroll-shell:after{top:1px;right:1px;bottom:1px;border-radius:0 6px 6px 0;display:none}.scroll-hint{color:var(--muted);font-size:.84rem;font-weight:700;margin:0 0 8px}.table-scroll-hint{display:none;margin-top:10px}table{width:100%;min-width:720px;border-collapse:collapse}th,td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}th{position:sticky;top:0;z-index:2;background:#fafaf8;color:var(--muted);font-size:.86rem;font-weight:700;white-space:nowrap}.sort-button{display:inline-flex;align-items:center;gap:6px;width:100%;border:0;background:transparent;color:inherit;cursor:pointer;font:inherit;font-weight:700;padding:0;text-align:left}.sort-button:hover,.sort-button:focus-visible{color:var(--ink)}.sort-button:focus-visible{outline:2px solid var(--blue);outline-offset:3px}.sort-indicator{color:#9c9890;display:inline-flex;justify-content:center;min-width:1em}tr:last-child td{border-bottom:0}.filters{display:grid;grid-template-columns:minmax(220px,1fr) repeat(3,minmax(120px,150px));gap:12px;margin:18px 0}input,select,textarea{width:100%;min-height:42px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font:inherit;padding:8px 10px}textarea{min-height:180px;resize:vertical}.contact-form{display:grid;gap:16px;margin-top:18px}.contact-form label{display:grid;gap:6px;color:var(--muted);font-size:.92rem;font-weight:700}.contact-form input,.contact-form select,.contact-form textarea{color:var(--ink);font-weight:400}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.contact-form button{border:0;cursor:pointer;width:fit-content}.contact-form button:disabled{cursor:wait;opacity:.7}.form-status{color:var(--accent);font-weight:700;min-height:1.8em}.source-note{color:var(--muted);font-size:.9rem}.video-grid{display:grid;gap:22px}.video-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.video-item iframe{width:100%;aspect-ratio:16 / 9;border:0;border-radius:10px;background:#111}.scroll-hint-shell{position:sticky;top:65px;z-index:3;background:var(--bg);border-bottom:1px solid var(--line);padding:10px 0 14px}.year-filter{display:flex;gap:8px;overflow-x:auto;padding:0 22px 0 0;scroll-snap-type:x proximity;white-space:nowrap}.year-filter a{display:inline-flex;align-items:center;justify-content:center;min-height:34px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font-size:.92rem;font-weight:700;padding:4px 12px;scroll-snap-align:start;text-decoration:none}.year-filter a:hover,.year-filter a:focus-visible{border-color:#cfcac1;color:var(--accent)}.video-years{display:grid;gap:34px;padding-top:28px}.video-year{scroll-margin-top:126px}.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:12px}.section-heading h2{margin:0}.section-heading a{color:var(--muted);font-size:.92rem;font-weight:700}.video-list,.playlist-list{display:grid;border-top:1px solid var(--line)}.video-row,.playlist-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:start;border-bottom:1px solid var(--line);padding:14px 0}.video-row h3,.playlist-row h3{margin:0;font-size:1rem;line-height:1.5}.video-meta{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 4px}.video-meta span{display:inline-flex;align-items:center;min-height:24px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:.82rem;line-height:1.2;padding:2px 8px}.video-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;white-space:nowrap}.embed-toggle{min-height:36px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);cursor:pointer;font:inherit;font-size:.9rem;font-weight:700;padding:5px 10px}.embed-toggle:hover,.embed-toggle:focus-visible{border-color:#cfcac1;color:var(--accent)}.embed-toggle:disabled{color:var(--muted);cursor:not-allowed;opacity:.55}.embed-slot{grid-column:1 / -1}.embed-slot iframe{width:100%;aspect-ratio:16 / 9;border:0;border-radius:8px;background:#111}.youtube-link{color:var(--youtube);font-weight:700}.site-footer{border-top:1px solid var(--line);color:var(--muted);margin-top:56px;padding:30px 0}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:780px){.header-inner{align-items:flex-start;flex-direction:column;gap:8px;padding:12px 0}.site-nav{gap:14px;width:100%}.hero{padding-top:44px}.grid.cols-3,.grid.cols-2,.landing-links,.footer-grid,.filters,.form-grid{grid-template-columns:1fr}.timeline-item,.year-card{grid-template-columns:1fr;gap:4px}.scroll-hint-shell{top:112px}.table-scroll-shell:after,.table-scroll-hint{display:block}.section-heading,.video-row,.playlist-row,.video-actions{grid-template-columns:1fr}.section-heading,.video-actions{align-items:flex-start}.share-actions{right:max(12px,env(safe-area-inset-right));bottom:max(12px,env(safe-area-inset-bottom))}.share-menu-toggle{width:48px;height:48px}.share-panel{bottom:calc(100% + 10px);width:min(264px,calc(100vw - 24px));backdrop-filter:blur(12px)}.share-button{min-width:0}.share-status{min-height:0}.video-actions{justify-content:flex-start;white-space:normal}.landing-hero{min-height:auto;padding:58px 0 48px}table{min-width:640px}}