:root{--bg-deep: #0b1120;--bg-panel: rgba(255, 255, 255, .06);--border-soft: rgba(255, 255, 255, .12);--text-main: #e2e8f0;--text-muted: #94a3b8;--accent: #a78bfa;--accent-soft: #6d28d9}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:"M PLUS Rounded 1c",Hiragino Kaku Gothic ProN,sans-serif;background:var(--bg-deep);color:var(--text-main);min-height:100vh;min-height:100dvh;overflow-x:hidden}.back-link{position:fixed;top:16px;left:16px;z-index:10;color:var(--text-muted);text-decoration:none;font-size:.85rem;background:var(--bg-panel);border:1px solid var(--border-soft);padding:8px 14px;border-radius:999px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.back-link:hover{color:var(--text-main)}.app{position:relative;max-width:480px;margin:0 auto;padding:72px 20px 40px;display:flex;flex-direction:column;align-items:center;gap:28px}.sky{position:fixed;inset:0;z-index:-1;background:radial-gradient(1.5px 1.5px at 20% 30%,#fff 100%,transparent),radial-gradient(1.5px 1.5px at 70% 20%,#fff 100%,transparent),radial-gradient(1px 1px at 85% 55%,#fff 100%,transparent),radial-gradient(1.5px 1.5px at 40% 70%,#fff 100%,transparent),radial-gradient(1px 1px at 55% 85%,#fff 100%,transparent),radial-gradient(1px 1px at 10% 65%,#fff 100%,transparent),radial-gradient(1px 1px at 92% 85%,#fff 100%,transparent),linear-gradient(180deg,#0b1120,#131b34 60%,#1b2450);opacity:.9}.app-header{text-align:center}.app-header h1{font-size:1.6rem;font-weight:700;display:flex;align-items:center;justify-content:center;gap:10px;color:#f1f5f9}.app-header h1 i{color:#fbbf24}.subtitle{margin-top:8px;font-size:.88rem;color:var(--text-muted)}.orb-wrap{display:flex;flex-direction:column;align-items:center;gap:10px;margin:12px 0}.orb{width:140px;height:140px;border-radius:50%;border:none;cursor:pointer;background:radial-gradient(circle at 35% 30%,#c4b5fd,var(--accent-soft));box-shadow:0 0 #a78bfa80,0 10px 30px #0006;color:#fff;font-size:2rem;display:flex;align-items:center;justify-content:center;transition:transform .15s ease}.orb:active{transform:scale(.96)}.orb.playing{animation:pulse 2.4s ease-in-out infinite}@keyframes pulse{0%{box-shadow:0 0 #a78bfa73,0 10px 30px #0006}70%{box-shadow:0 0 0 24px #a78bfa00,0 10px 30px #0006}to{box-shadow:0 0 #a78bfa00,0 10px 30px #0006}}.status-text{font-size:.92rem;color:var(--text-muted)}.timer-text{font-size:.85rem;color:var(--accent);font-variant-numeric:tabular-nums}.panel{width:100%;background:var(--bg-panel);border:1px solid var(--border-soft);border-radius:20px;padding:18px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.panel-title{font-size:.9rem;color:var(--text-muted);margin-bottom:14px;display:flex;align-items:center;gap:8px}.sound-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.sound-card{background:#ffffff0a;border:1.5px solid transparent;border-radius:14px;padding:14px 6px;color:var(--text-main);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;transition:border-color .15s ease,background .15s ease}.sound-card i{font-size:1.3rem;color:var(--accent)}.sound-name{font-size:.82rem;font-weight:700}.sound-desc{font-size:.68rem;color:var(--text-muted);line-height:1.3}.sound-card[aria-checked=true]{border-color:var(--accent);background:#a78bfa26}#volumeSlider{width:100%;accent-color:var(--accent);height:6px}.timer-buttons{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.timer-btn{background:#ffffff0a;border:1.5px solid transparent;border-radius:12px;padding:10px 4px;color:var(--text-main);font-size:.8rem;cursor:pointer;transition:border-color .15s ease,background .15s ease}.timer-btn[aria-checked=true]{border-color:var(--accent);background:#a78bfa26}.share-x-btn{display:inline-flex;align-items:center;gap:10px;background:#000;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:12px 24px;font-size:.9rem;font-weight:700;font-family:inherit;cursor:pointer;transition:transform .15s ease,background .15s ease}.share-x-btn:hover{background:#1a1a1a}.share-x-btn:active{transform:scale(.97)}.note{font-size:.72rem;color:var(--text-muted);text-align:center;line-height:1.6}@media(max-width:380px){.sound-name{font-size:.75rem}.sound-desc{display:none}}