@charset "UTF-8";:root{--maxw:920px}@font-face{font-family:"Noto Sans JP Local";src:local("Noto Sans JP"),local("Noto Sans CJK JP")}body{font-family:"Noto Sans JP Local","Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans",sans-serif;margin:0;color:#404040;background:#fff}header{background:#fff;border-bottom:1px solid #e6e6e6}header .inner{max-width:var(--maxw);margin:0 auto;padding:16px}#headerTitle{font-size:clamp(17px,2vw,22px);font-weight:700;line-height:1.3;margin:0}.container_bg{background:#f7f8f9;padding:clamp(12px,4vw,24px) 0 clamp(40px,6vw,80px)}main{max-width:var(--maxw);margin:0 auto;padding:0 16px 0}.player{position:relative;width:100%;aspect-ratio:16 / 9;background:#000;border-radius:12px;overflow:hidden;box-shadow:0 6px 18px rgba(0,0,0,.12)}.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0;transform:scale(1.002);transform-origin:center center}.back-btn{display:inline-block;margin-top:12px;padding:8px 16px;vertical-align:middle;border-radius:6px;background:#3399D5;color:#fff;text-decoration:none;font-weight:700;font-size:clamp(13px,1.8vw,15px);box-shadow:0 2px 6px rgba(13,110,253,.2);transition:background .2s ease}.back-btn:hover{filter:brightness(.95)}.back-btn i{margin-right:6px}.note{margin-top:14px;font-size:clamp(12px,1.5vw,14px);color:#495057}.error{padding:16px;background:#fff3f3;border:1px solid #ffd7d7;color:#a40000;border-radius:10px}footer{background:#fff;border-top:1px solid #e6e6e6}footer .inner{max-width:var(--maxw);margin:0 auto;padding:20px 16px;color:#495057}footer p{margin:0 0 8px;font-size:clamp(11px,1.4vw,13px);line-height:1.7}.player{position:relative}.loader{position:absolute;inset:0;display:grid;place-items:center;background:rgba(10,12,16,.35);backdrop-filter:blur(1px);z-index:10}.loader.is-hidden{display:none}.spinner{width:42px;height:42px;border:3px solid rgba(255,255,255,.35);border-top-color:#13bf86;border-radius:50%;animation:spin 900ms linear infinite;margin-bottom:.5rem}.loading-text{font-size:14px;color:#eef2f6;opacity:.9}@media (prefers-reduced-motion:reduce){.spinner{animation:none}}@keyframes spin{to{transform:rotate(360deg)}}