:root{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#172033;background:#f7f9fc}*{box-sizing:border-box}body{margin:0;background:linear-gradient(135deg,#f8fbff,#f7fff9)}main{max-width:1050px;margin:auto;padding:28px 18px 60px}.hero,.card{background:#fff;border:1px solid #dde5ef;border-radius:18px;box-shadow:0 12px 34px rgba(32,54,84,.07)}.hero{padding:28px}.card{padding:22px;margin-top:18px}h1{font-size:clamp(1.9rem,5vw,3.2rem);margin:.15em 0}.eyebrow{font-weight:800;color:#245da8;text-transform:uppercase;letter-spacing:.08em;font-size:.8rem}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:15px}.tool-link{display:block;padding:18px;border:1px solid #dce6f2;border-radius:15px;text-decoration:none;color:inherit;background:#fff}.tool-link:hover,.tool-link:focus{transform:translateY(-1px);box-shadow:0 8px 22px rgba(32,54,84,.09)}label{font-weight:700;display:block;margin:.7rem 0 .35rem}input[type=file],input[type=number],select,button{width:100%;padding:12px;border-radius:11px;border:1px solid #b8c5d5;font:inherit}button,.btn{background:#1769aa;color:white;border:0;font-weight:800;cursor:pointer;text-decoration:none;display:inline-block;text-align:center}.actions{display:flex;gap:10px;flex-wrap:wrap}.actions>*{flex:1 1 180px}canvas{width:100%;height:180px;border:1px solid #dce6f2;border-radius:12px}.meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.stat{padding:12px;background:#f7f9fc;border-radius:11px}.stat b{display:block;font-size:1.1rem}.notice{padding:13px;border-radius:11px;background:#fff8e7;border:1px solid #f0d693}.ok{background:#edf9f0;border-color:#bfe1c8}.error{background:#fff0f0;border-color:#e6b9b9}.muted{color:#637086}.small{font-size:.92rem}.hidden{display:none}footer{margin-top:28px;color:#66748a;font-size:.88rem}@media(prefers-reduced-motion:no-preference){.tool-link,.btn,button{transition:.18s ease}}@media(max-width:600px){.hero,.card{border-radius:14px;padding:17px}}

/* Build 144: align Audio pages with standard MesraTools light-gradient visual language. */
:root{--mt-primary:#4f6df5;--mt-primary2:#7c5cff;--mt-line:#dfe6f2;--mt-shadow:0 18px 46px rgba(47,68,120,.12)}
body{background:linear-gradient(135deg,#f8fbff 0%,#f8f6ff 48%,#f5fff9 100%);min-height:100vh}
.hero,.card{border-color:var(--mt-line);box-shadow:0 12px 34px rgba(47,68,120,.08);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--mt-shadow);border-color:rgba(79,109,245,.3)}
button,.btn{background:linear-gradient(135deg,var(--mt-primary),var(--mt-primary2));box-shadow:0 8px 22px rgba(79,109,245,.22);transition:transform .18s ease,box-shadow .18s ease}
button:hover,.btn:hover{transform:translateY(-1px);box-shadow:0 11px 28px rgba(79,109,245,.34)}
.tool-link{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.tool-link:hover,.tool-link:focus-visible{transform:translateY(-2px);border-color:rgba(79,109,245,.38);box-shadow:0 12px 26px rgba(47,68,120,.13)}
input:focus,select:focus{outline:3px solid rgba(79,109,245,.16);border-color:var(--mt-primary)}
@media(prefers-reduced-motion:reduce){.hero,.card,.tool-link,button,.btn{transition:none!important;transform:none!important}}

/* Build 148 — public Audio catalog consistency */
.audio-hero{background:linear-gradient(135deg,rgba(79,109,245,.11),rgba(124,92,255,.08),rgba(255,255,255,.96))}
.audio-hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.audio-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:16px}
.audio-section-heading h2{margin:.2rem 0 0}
.audio-count{font-size:.86rem;font-weight:800;padding:6px 10px;border-radius:999px;background:rgba(79,109,245,.09);white-space:nowrap}
.audio-tool-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.audio-tool-card{position:relative;display:flex;flex-direction:column;min-height:185px;gap:8px}
.audio-tool-card strong{font-size:1.04rem;line-height:1.35}
.audio-tool-card p{margin:0;color:#536274;line-height:1.55;flex:1}
.audio-tool-id{display:inline-flex;align-self:flex-start;font-size:.76rem;font-weight:850;letter-spacing:.04em;padding:4px 8px;border-radius:999px;background:rgba(79,109,245,.09);color:#354ec4}
.audio-open{font-size:.86rem;font-weight:800;color:#4f6df5;margin-top:5px}
.audio-tool-card:hover .audio-open{transform:translateX(2px)}
.audio-guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.audio-guide-grid>div{padding:14px;border:1px solid #e3e9f2;border-radius:14px;background:rgba(255,255,255,.75)}
.audio-guide-grid h3{margin-top:0}
.audio-public-guidance p:last-child{margin-bottom:0}
@media(max-width:700px){
 .audio-section-heading{align-items:flex-start}
 .audio-guide-grid{grid-template-columns:1fr}
 .audio-tool-card{min-height:auto}
 .audio-hero-actions .btn{width:100%;justify-content:center}
}
@media(prefers-reduced-motion:reduce){
 .audio-tool-card,.audio-tool-card .audio-open{transition:none!important;transform:none!important}
}

/* Build 149 — standard MesraTools top navigation on all Audio surfaces */
.site-header{position:sticky;top:0;z-index:50;background:rgba(248,251,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,230,242,.9)}
.site-header .wrap{max-width:1180px}
.site-header .brand{text-decoration:none}
.site-header .nav-pills{margin-left:auto}
.site-header .nav-pill.active{background:rgba(79,109,245,.10);border-color:rgba(79,109,245,.24)}
body>main{padding-top:28px}
@media(min-width:900px){
 .site-header .header-shell{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
 .site-header .nav-pills{flex:1 1 760px;justify-content:flex-end;flex-wrap:wrap!important;overflow:visible!important}
}
@media(max-width:899px){
 .site-header .header-shell{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
 .site-header .nav-pills{order:3;width:100%;overflow-x:auto;flex-wrap:nowrap!important;padding-bottom:8px}
 .site-header .nav-pill{flex:0 0 auto}
}
@media(prefers-reduced-motion:reduce){
 .site-header .nav-pill{transition:none!important;transform:none!important}
}