/* Additive sound controls only. Approved v2 design, CSS and layout stay unchanged. */
#ohama-about-v2 .oa3-sound-actions{display:flex;align-items:center;gap:18px;min-width:0;margin-left:auto}
#ohama-about-v2 .oa3-sound-actions>.oa2-micro{display:flex;align-items:center;gap:12px}
#ohama-about-v2 .oa3-sound-actions>.oa2-micro i{width:4px;height:4px;background:var(--oa-red)}
#ohama-about-v2 .oa3-sound{position:relative;display:flex;align-items:center;gap:2px;flex-shrink:0;z-index:60}
#ohama-about-v2 .oa3-sound button{border:1px solid #d4d9cb;border-radius:3px;background:#f5f6ee;min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:11px;line-height:1.4;white-space:nowrap;padding:8px 12px;transition:background .2s,border-color .2s}
#ohama-about-v2 .oa3-sound button:hover{border-color:#9cae92;background:#edf0e5}
#ohama-about-v2 .oa3-sound button:focus-visible,#ohama-about-v2 .oa3-sound input:focus-visible{outline:3px solid var(--oa-red);outline-offset:3px}
#ohama-about-v2 .oa3-sound svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.3;flex-shrink:0}
#ohama-about-v2 .oa3-sound .oa3-sound-toggle{position:relative;overflow:hidden;min-width:139px}
#ohama-about-v2 .oa3-sound-toggle:after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;transform:scaleX(var(--oa3-sound-progress,0));transform-origin:left;background:var(--oa-red)}
#ohama-about-v2 .oa3-sound [data-oa3-settings]{width:40px;padding:8px}
#ohama-about-v2 .oa3-sound[data-state=playing] .oa3-sound-toggle{color:#fffdf5;background:var(--oa-dark);border-color:var(--oa-dark)}
#ohama-about-v2 .oa3-sound [data-oa3-settings][aria-expanded=true]{background:#e7ecdf;border-color:#a5b59b}
#ohama-about-v2 .oa3-sound-panel{position:absolute;top:calc(100% + 10px);right:0;width:min(310px,calc(100vw - 32px));padding:22px;background:#fdfbf4;border:1px solid #cbd2bf;border-radius:6px;box-shadow:0 15px 34px -18px #24352188;color:var(--oa-ink);z-index:80}
#ohama-about-v2 .oa3-sound-panel-head{display:flex;align-items:center;gap:12px;justify-content:space-between}
#ohama-about-v2 .oa3-sound-panel h2{font:500 18px/1.6 var(--oa-serif)}
#ohama-about-v2 .oa3-sound-panel [data-oa3-panel-close]{padding:4px;width:30px;min-height:30px;font-size:19px;border:0;background:transparent}
#ohama-about-v2 .oa3-sound-panel .oa3-sound-description{margin:10px 0 20px;font:11px/1.9 var(--oa-sans);color:var(--oa-muted)}
#ohama-about-v2 .oa3-sound-volume{display:flex;justify-content:space-between;gap:15px;font-size:11px}
#ohama-about-v2 .oa3-sound-volume output{font-family:var(--oa-mono)}
#ohama-about-v2 .oa3-sound-panel input[type=range]{display:block;width:100%;accent-color:var(--oa-green);margin:5px 0 16px;min-height:28px;cursor:pointer}
#ohama-about-v2 .oa3-sound-panel .oa3-sound-credit{border-top:1px solid #d8ddcf;padding-top:12px;font-size:10px;line-height:1.9;color:var(--oa-muted)}
#ohama-about-v2 .oa3-sound-live{position:absolute!important;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
#ohama-about-v2 .oa3-sound-stop-floating{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:max(22px,env(safe-area-inset-bottom));z-index:70;border:1px solid #637259;border-radius:4px;display:flex;align-items:center;gap:12px;min-height:44px;background:#263425ee;color:#fff;padding:9px 15px;font-size:12px;box-shadow:0 5px 24px #18231926;backdrop-filter:blur(10px)}
#ohama-about-v2 .oa3-sound-stop-square{width:8px;height:8px;background:#f4edda}
@media(max-width:1120px){#ohama-about-v2 .oa3-sound-actions>.oa2-micro{display:none}}
@media(max-width:600px){#ohama-about-v2 .oa2-topline{gap:8px}#ohama-about-v2 .oa3-sound-actions{gap:0}#ohama-about-v2 .oa3-sound button{min-height:36px;font-size:10px;padding:6px 8px;gap:5px}#ohama-about-v2 .oa3-sound .oa3-sound-toggle{min-width:120px}#ohama-about-v2 .oa3-sound [data-oa3-settings]{width:32px;padding:6px}#ohama-about-v2 .oa3-sound svg{width:16px;height:16px}#ohama-about-v2 .oa3-sound-panel{top:calc(100% + 7px);padding:19px}#ohama-about-v2 .oa2-breadcrumb{gap:8px}#ohama-about-v2 .oa3-sound-stop-floating{right:16px;bottom:max(16px,env(safe-area-inset-bottom));min-height:44px}}
@media(prefers-reduced-motion:reduce){#ohama-about-v2 .oa3-sound button{transition:none}}
@media print{#ohama-about-v2 .oa3-sound,#ohama-about-v2 .oa3-sound-stop-floating{display:none!important}}