:root{--bg:#ffffff;--fg:#0f2438;--muted:#6b7f92;--line:#e2e8ee;--brand:#07528f;--deep:#0a2540;--deep2:#061a30;--brand-soft:#eaf1f8}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--fg);font-family:Zen Kaku Gothic New,-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}main{min-height:100vh}.header{position:-webkit-sticky;position:sticky;top:0;z-index:50;justify-content:space-between;padding:12px 20px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header,.header .logo{display:flex;align-items:center}.header .logo-img{height:26px;width:auto;display:block}.header nav{display:flex;gap:20px;font-size:12px;letter-spacing:.1em;color:var(--muted)}.header nav a:hover{color:var(--deep)}.hero{position:relative;min-height:calc(100vh - 49px);display:grid;place-items:center;padding:24px;text-align:center;overflow:hidden;background:radial-gradient(120% 90% at 50% 0,#12365c 0,var(--deep) 45%,var(--deep2) 100%)}.hero-inner{position:relative;z-index:2}.hero-logo{width:min(360px,72vw);height:auto;margin:0 auto 32px;display:block}.hero-title{font-size:clamp(30px,6.5vw,54px);font-weight:700;line-height:1.2;color:#fff;letter-spacing:.02em}.hero-title .accent{color:#7db4e6}.hero-desc{margin:26px 0 38px;color:#a9c2d8;line-height:1.9;font-size:14px}.hero-cta{display:inline-block;padding:14px 44px;background:#fff;color:var(--deep);border-radius:999px;font-weight:600;font-size:14px;letter-spacing:.04em;transition:transform .2s,box-shadow .2s;box-shadow:0 8px 26px rgba(0,0,0,.35)}.hero-cta:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.45)}.hero-waves{position:absolute;left:0;right:0;bottom:0;z-index:1;width:100%;height:auto}.hero-waves .w1{opacity:.14}.hero-waves .w2{opacity:.2}.hero-waves .w3{opacity:.28}.page{padding:32px 0 80px}.page-title{font-size:20px;letter-spacing:.12em;color:var(--deep)}.event-header,.page-title{padding:0 20px 20px}.event-header .event-date{color:var(--muted);font-size:12px;letter-spacing:.1em}.event-desc{color:var(--muted);margin-top:8px;font-size:14px;line-height:1.8}.event-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:20px;gap:20px;padding:0 20px}.event-card{border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:border-color .2s}.event-card:hover{border-color:var(--brand)}.event-thumb{aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}.event-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}.event-card:hover .event-thumb img{transform:scale(1.04)}.event-info{padding:16px}.event-info .event-date{font-size:11px;color:var(--muted);letter-spacing:.1em}.event-info h2{font-size:17px;margin:6px 0;color:var(--deep)}.event-info p{font-size:13px;color:var(--muted);line-height:1.6}.filterbar{position:-webkit-sticky;position:sticky;top:49px;z-index:30;background:rgba(255,255,255,.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:10px 12px;margin-bottom:8px}.filterbar-inner{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.filterbar input[type=date],.filterbar select{background:#fff;color:var(--fg);border:1px solid var(--line);border-radius:6px;padding:8px 10px;font-size:13px}.sel-toggle{background:#fff;color:var(--deep);border:1px solid var(--deep);border-radius:6px;padding:8px 14px;font-size:13px;font-weight:600;cursor:pointer}.sel-toggle.on{background:var(--deep);color:#fff}.count{margin-left:auto;color:var(--muted);font-size:12px}.cell{position:relative;padding:0;border:none;background:var(--brand-soft);overflow:hidden;cursor:pointer;border-radius:3px}.cell img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}.cell:hover img{transform:scale(1.05)}.cell .check{position:absolute;top:8px;right:8px;width:26px;height:26px;border-radius:50%;border:2px solid #fff;background:rgba(0,0,0,.35);display:grid;place-items:center;font-size:14px;color:#fff}.cell .check.on{background:var(--deep);color:#fff;border-color:var(--deep)}.loader{grid-column:1/-1;text-align:center;color:var(--muted);padding:24px;font-size:13px}.lb{position:fixed;inset:0;z-index:100;background:rgba(255,255,255,.97);display:flex;flex-direction:column;animation:fade .15s ease}@keyframes fade{0%{opacity:0}}.lb-top{display:flex;justify-content:center;gap:8px;padding:max(14px,env(safe-area-inset-top)) 14px 14px}.lb-btn{min-width:52px;height:44px;padding:0 16px;background:var(--brand-soft);color:var(--brand);border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer}.lb-btn:hover{background:#d7e6f3}.lb-btn.save{background:var(--deep);color:#fff}.lb-img{flex:1 1;display:grid;place-items:center;padding:0 12px;min-height:0}.lb-img img{max-width:100%;max-height:100%;object-fit:contain;border-radius:2px}.lb-meta{padding:16px 20px 28px;max-width:800px;margin:0 auto;width:100%}.lb-meta h2{font-size:16px;margin-bottom:10px;color:var(--deep)}.lb-meta dl{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:13px}.lb-meta dl>div{display:flex;gap:6px}.lb-meta dt{color:var(--muted)}.lb-meta p{margin-top:12px;color:var(--fg);font-size:13px;line-height:1.8}.lb-hint{bottom:20px;padding:12px 18px;border-radius:10px;max-width:90%;text-align:center;box-shadow:0 8px 30px rgba(0,0,0,.35)}.lb-hint,.selbar{position:fixed;left:50%;transform:translateX(-50%);background:var(--deep);color:#fff;font-size:13px}.selbar{bottom:max(20px,env(safe-area-inset-bottom));z-index:60;display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:999px;box-shadow:0 10px 30px rgba(7,82,143,.35);white-space:nowrap;max-width:92vw}.selbar .warn{color:#ffd9a8;font-size:11px}.selbar button{border:none;border-radius:999px;padding:8px 16px;font-size:13px;cursor:pointer;background:rgba(255,255,255,.2);color:#fff}.selbar button.primary{background:#fff;color:var(--deep);font-weight:600}.selbar button:disabled{opacity:.5}@media (max-width:640px){.header nav{gap:14px}.lb-btn{min-width:56px;height:48px}}.gallery-top{padding-top:0}.gallery-top .filterbar{top:49px}.empty{padding:80px 20px;text-align:center;color:var(--muted)}.empty-title{font-size:15px;margin-bottom:8px}.empty-desc,.header-title{font-size:12px}.header-title{letter-spacing:.12em;color:var(--muted)}