.hwc-wrap{max-width:560px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#1a1a1a}
.hwc-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.hwc-icon{font-size:34px;line-height:1}
.hwc-title{font-size:22px!important;font-weight:600!important;margin:0 0 3px!important;padding:0!important;border:none!important;color:#1a1a1a!important}
.hwc-sub{font-size:13px;color:#666;margin:0}
.hwc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:4px}
@media(max-width:380px){.hwc-grid{grid-template-columns:1fr}}
.hwc-lbl{display:block;font-size:13px;font-weight:500;color:#555;margin-bottom:5px}
.hwc-iw{position:relative}
.hwc-iw input{width:100%;box-sizing:border-box;padding:9px 38px 9px 12px;border:1px solid #d0d0d0;border-radius:8px;font-size:14px;color:#1a1a1a;background:#fff;outline:none;transition:border-color .15s;-moz-appearance:textfield}
.hwc-iw input::-webkit-inner-spin-button,.hwc-iw input::-webkit-outer-spin-button{-webkit-appearance:none}
.hwc-iw input:focus{border-color:#0891B2;box-shadow:0 0 0 3px rgba(8,145,178,.1)}
.hwc-suf{position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:11px;color:#999;pointer-events:none}
.hwc-toggle{display:flex;border:1px solid #d0d0d0;border-radius:8px;overflow:hidden}
.hwc-tbtn{flex:1;padding:9px 8px;font-size:13px;font-weight:500;border:none;border-right:1px solid #d0d0d0;background:#fff;color:#555;cursor:pointer;transition:background .13s}
.hwc-tbtn:last-child{border-right:none}
.hwc-tbtn.act{background:#cffafe;color:#0e7490;font-weight:600}
.hwc-result-card{background:linear-gradient(135deg,#0891B2,#0e7490);border-radius:12px;padding:18px 22px;color:#fff;margin-top:12px;text-align:center;animation:hwc-in .22s ease}
@keyframes hwc-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
.hwc-res-main{font-size:36px;font-weight:800;font-family:monospace;margin-bottom:4px}
.hwc-res-sub{font-size:14px;opacity:.8}
.hwc-formula-table{margin-top:12px;background:#fafafa;border:1px solid #e8e8e8;border-radius:10px;overflow:hidden}
.hwc-f-row{display:flex;justify-content:space-between;padding:10px 16px;border-bottom:1px solid #f0f0f0;font-size:13px}
.hwc-f-row:last-child{border-bottom:none}
.hwc-f-name{color:#555;font-weight:500}
.hwc-f-val{font-family:monospace;font-weight:700;color:#0e7490}
.hwc-disc{font-size:11px;color:#bbb;text-align:center;margin-top:8px}