:root{--primary: #005bac;--accent: #00a3e0;--bg: #f4f6f8;--text: #222;--white: #fff;--shadow: 0 6px 20px rgba(0,0,0,.08);--radius: 18px}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,Noto Sans,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text)}.site-header{background:linear-gradient(180deg,#00000040,#00000040),url(https://images.unsplash.com/photo-1546500840-5e6a87b8df66?q=80&w=1600&auto=format&fit=crop) center/cover no-repeat;color:var(--white);text-align:center;padding:34px 16px;box-shadow:var(--shadow)}.site-header h1{margin:0;font-size:22px;letter-spacing:.3px}.site-header h2{margin:8px 0 4px;font-size:16px;font-weight:600}.site-header p{margin:6px 0 0;opacity:.95}.container{max-width:980px;margin:28px auto;padding:0 16px}.controls{display:flex;gap:12px;justify-content:center;margin-bottom:16px}.btn{border:0;background:var(--primary);color:var(--white);padding:10px 16px;border-radius:999px;cursor:pointer;box-shadow:var(--shadow);font-weight:600}.btn[disabled]{opacity:.6;cursor:not-allowed}.btn-stop{background:#d7263d}.player-wrap{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:10px}.player-target{position:relative;width:100%;aspect-ratio:16 / 9;overflow:hidden;border-radius:12px}.player-iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.note{margin:12px auto 0;text-align:center;font-size:14px;opacity:.8}.site-footer{text-align:center;padding:18px;color:#666}