.tool-hero{display:flex;flex-wrap:wrap;gap:32px;align-items:flex-start;margin-bottom:1rem;}
.hero-text{flex:1;min-width:260px;}
.hero-text h1{font-size:40px;font-weight:700;line-height:1.2;margin-bottom:0;}
.hero-subtitle{font-size:18px;color:var(--text-muted);max-width:640px;margin-bottom:1rem;margin-top:0;}
@media (max-width:767px){.hero-text h1{font-size:clamp(1.75rem,5vw,2.5rem);}.hero-subtitle{font-size:clamp(1rem,3vw,1.125rem);}}
.vol-wrap{margin-bottom:2rem;}
.vol-card{background:var(--card-bg,var(--surface,#fff));border-radius:16px;padding:1.25rem;box-shadow:0 2px 12px rgba(0,0,0,0.06);border:1px solid var(--border-color,var(--border,#e5e7eb));}
.vol-strip{display:flex;gap:0.5rem;overflow-x:auto;padding-bottom:0.5rem;margin-bottom:1.25rem;-webkit-overflow-scrolling:touch;scrollbar-width:thin;}
.vol-strip::-webkit-scrollbar{height:6px;}
.vol-strip::-webkit-scrollbar-track{background:var(--surface-muted,#f3f4f6);border-radius:3px;}
.vol-strip::-webkit-scrollbar-thumb{background:var(--border,#cbd5e1);border-radius:3px;}
.vol-chip{flex:0 0 auto;padding:0.6rem 1rem;font-size:0.9rem;font-weight:500;color:var(--text-muted,#64748b);background:var(--surface-muted,#f1f5f9);border:1px solid transparent;border-radius:999px;cursor:pointer;transition:color 0.2s,background 0.2s,border-color 0.2s;}
.vol-chip:hover{color:var(--text-main,#1e293b);background:var(--border,#e2e8f0);}
.vol-chip.is-active{color:var(--primary,#2563eb);background:var(--primary,#2563eb);color:#fff;border-color:var(--primary,#2563eb);}
.vol-panel{min-height:120px;}
.vol-form{display:flex;flex-direction:column;gap:1rem;}
.vol-form[hidden]{display:none;}
.vol-row{display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem;}
.vol-label{flex:0 0 100%;font-size:0.875rem;font-weight:500;color:var(--text-main,#334155);}
.vol-input{flex:1;min-width:0;max-width:12rem;padding:0.65rem 0.85rem;font-size:1rem;line-height:1.4;color:var(--text-main,#334155);background:var(--surface,#fff);border:1px solid var(--border,#e2e8f0);border-radius:10px;transition:border-color 0.2s;}
.vol-input::placeholder{color:var(--text-muted,#94a3b8);}
.vol-input:hover{border-color:var(--text-muted,#cbd5e1);}
.vol-input:focus{outline:0;border-color:var(--primary,#2563eb);box-shadow:0 0 0 3px rgba(37,99,235,0.15);}
.vol-unit{font-size:0.875rem;color:var(--text-muted,#64748b);}
.vol-out{margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--border,#e2e8f0);display:flex;flex-wrap:wrap;align-items:baseline;gap:0.5rem;}
.vol-out-label{font-size:0.875rem;font-weight:600;color:var(--text-muted,#64748b);text-transform:uppercase;letter-spacing:0.03em;}
.vol-out-value{font-size:1.5rem;font-weight:700;color:var(--primary,#2563eb);letter-spacing:-0.02em;}
.vol-out-unit{font-size:0.875rem;color:var(--text-muted,#64748b);}
@media (min-width:480px){.vol-card{padding:1.5rem;}.vol-strip{margin-bottom:1.5rem;}.vol-out{margin-top:1.5rem;padding-top:1.5rem;}.vol-out-value{font-size:1.75rem;}}
@media (min-width:768px){.vol-card{padding:2rem;}.vol-strip{flex-wrap:wrap;overflow-x:visible;}.vol-row{flex-wrap:nowrap;}.vol-label{flex:0 0 5rem;}.vol-input{max-width:10rem;}.vol-out-value{font-size:2rem;}}