.dth-calculator{--dth-green:#194531;--dth-green-hover:#286247;--dth-ink:#243a2c;--dth-muted:#607468;--dth-line:#e0e9e2;--dth-soft:#f0f6f1;max-width:690px;margin:26px auto;border:1px solid var(--dth-line);border-radius:20px;overflow:hidden;background:#fff;box-shadow:0 12px 34px rgba(17,58,32,.075);font-family:inherit;color:var(--dth-ink);box-sizing:border-box}
.dth-calculator *{box-sizing:border-box}
.dth-header{background:linear-gradient(120deg,#163a29,#25543b);padding:33px 36px 32px;color:#fff}
.dth-eyebrow{font-size:11px;font-weight:800;letter-spacing:1.6px;color:#c2e1c9;margin-bottom:12px}
.dth-leaf{font-size:16px;color:#a6d4b1;margin-right:6px}
.dth-calculator .dth-header h2{color:#fff!important;font-size:clamp(23px,4vw,30px);font-weight:750;line-height:1.2;margin:0 0 10px;padding:0}
.dth-calculator .dth-header p{color:#e0ece2;margin:0;font-size:14px;line-height:1.6}
.dth-content{padding:32px 36px 25px}
.dth-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:18px;row-gap:22px}
.dth-field{min-width:0}
.dth-field-full{grid-column:1/-1}
.dth-field label{display:block;font-size:14px;font-weight:700;color:var(--dth-ink);margin:0 0 9px;line-height:1.4}
.dth-field label small{font-size:12px;font-weight:500;color:var(--dth-muted)}
.dth-input-wrap{position:relative;display:flex;align-items:center}
.dth-calculator .dth-input-wrap input{display:block!important;width:100%!important;min-width:0;height:51px!important;background:#fff!important;border:1px solid #d7e2d9!important;border-radius:10px!important;padding:11px 54px 11px 15px!important;font-size:16px!important;font-weight:500;color:var(--dth-ink)!important;box-shadow:none!important;outline:0;margin:0!important;line-height:1.3}
.dth-calculator .dth-input-wrap input:focus{border-color:#3b9364!important;box-shadow:0 0 0 3px rgba(56,134,82,.12)!important}
.dth-input-wrap>span{position:absolute;right:13px;font-size:12px;font-weight:600;color:#7e9283;pointer-events:none}
.dth-quick-label{font-size:12px;color:var(--dth-muted);margin:11px 0 8px}
.dth-quick-lengths{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:5px}
.dth-calculator .dth-quick-lengths button{display:flex;align-items:center;justify-content:center;min-width:0;width:100%;min-height:35px;border:1px solid #dce6de;border-radius:8px;padding:5px 1px;background:#f7faf7;color:#42624d;box-shadow:none;font-size:12px;line-height:1.2;font-weight:700;cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.dth-calculator .dth-quick-lengths button:hover{border-color:#75ad86;background:#eaf4ec}
.dth-calculator .dth-quick-lengths button.is-selected,.dth-calculator .dth-quick-lengths button[aria-pressed="true"]{background:var(--dth-green);color:#fff;border-color:var(--dth-green)}
.dth-result{background:var(--dth-soft);border:1px solid #e2ede5;border-radius:14px;padding:24px 25px 18px;margin-top:26px}
.dth-result-heading{color:#68806d;letter-spacing:1.2px;font-weight:800;font-size:11px}
.dth-result-value{display:flex;gap:9px;align-items:baseline;flex-wrap:wrap;color:var(--dth-green);margin:7px 0 18px}
.dth-total{font-size:clamp(28px,5vw,40px);font-weight:800;letter-spacing:-1px;line-height:1.3;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.dth-unit{font-size:18px;font-weight:700}
.dth-result-divider{border-top:1px solid #d6e5d9;margin-bottom:12px}
.dth-result-row{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#5b7663;font-size:13px;margin-top:9px}
.dth-result-row strong{color:#2c4b35;font-size:13px;text-align:right}
.dth-actions{display:grid;grid-template-columns:1fr 1.5fr;gap:12px;margin-top:21px}
.dth-calculator .dth-actions button{min-height:46px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;font-size:13px;line-height:1.3;font-weight:700;padding:11px 15px;cursor:pointer;transition:background .15s;border:1px solid #d6e1d9;box-shadow:none}
.dth-calculator .dth-reset{background:#fff;color:var(--dth-green)}
.dth-calculator .dth-reset:hover{background:#f2f6f3}
.dth-calculator .dth-copy{background:var(--dth-green);border-color:var(--dth-green)!important;color:#fff}
.dth-calculator .dth-copy:hover{background:var(--dth-green-hover)}
.dth-note{font-size:12px;color:#7a8c80;line-height:1.65;margin:16px 0 0}
.dth-feedback{min-height:0;margin:5px 0 0;font-size:12px;color:var(--dth-green)}
.dth-calculator button:focus-visible{outline:3px solid #91c7a3;outline-offset:2px}
@media(max-width:560px){.dth-header{padding:25px 22px}.dth-content{padding:22px}.dth-fields{grid-template-columns:1fr;row-gap:18px}.dth-result{padding:21px 18px 17px}.dth-actions{grid-template-columns:1fr 1.5fr;gap:8px}.dth-calculator .dth-actions button{padding:11px 7px;font-size:12px}}
@media(max-width:350px){.dth-actions{grid-template-columns:1fr}.dth-quick-lengths{gap:3px}.dth-calculator .dth-quick-lengths button{font-size:11px}}
/* v2: records and export */
.dth-calculator .dth-add{background:var(--dth-green);color:#fff;border-color:var(--dth-green)!important}
.dth-calculator .dth-add:hover{background:var(--dth-green-hover)}
.dth-list-section{margin-top:25px;border-top:1px solid var(--dth-line);padding-top:23px}
.dth-list-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:15px}
.dth-list-heading h3{font-size:19px;font-weight:750;color:var(--dth-green);margin:0}
.dth-count{font-size:12px;color:var(--dth-muted);padding:5px 9px;background:var(--dth-soft);border-radius:20px;white-space:nowrap}
.dth-table-scroller{overflow-x:auto;border:1px solid var(--dth-line);border-radius:10px}
.dth-calculator .dth-table{width:100%;min-width:490px;border-collapse:collapse;font-size:13px;margin:0;background:#fff}
.dth-calculator .dth-table th{background:#f1f6f2;color:#45624c;font-weight:700;text-align:left;padding:12px 10px;white-space:nowrap}
.dth-calculator .dth-table td{padding:12px 10px;border-top:1px solid #e7efe9;color:#274331;white-space:nowrap}
.dth-calculator .dth-table .dth-empty{text-align:center;color:#788d7e;padding:25px 10px}
.dth-calculator .dth-delete{border:1px solid #ead2d2;background:#fff4f4;color:#ad3b3b;font-size:12px;font-weight:700;border-radius:6px;padding:6px 9px;cursor:pointer}
.dth-summary{background:#f0f6f1;border-radius:10px;padding:17px 19px;margin-top:14px}
.dth-summary>div{display:flex;justify-content:space-between;gap:10px;align-items:center;margin:5px 0;color:#5e7967;font-size:13px}
.dth-summary strong{color:#194531;font-size:16px;font-weight:800;text-align:right}
.dth-summary>div+div{border-top:1px solid #dbe9df;padding-top:12px;margin-top:12px}
.dth-export-actions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:9px;margin:0 0 14px}
.dth-calculator .dth-export-actions button{min-width:0;min-height:42px;border:1px solid #d5e2d8;background:#fff;color:#194531;font-weight:700;font-size:12px;border-radius:8px;cursor:pointer;padding:8px}
.dth-calculator .dth-export-actions button:first-child,.dth-calculator .dth-export-actions button:nth-child(2){background:#194531;color:#fff;border-color:#194531}
.dth-calculator button:disabled{opacity:.46;cursor:not-allowed}
@media(max-width:560px){.dth-export-actions{grid-template-columns:1fr 1fr}.dth-export-actions button:last-child{grid-column:1/-1}}
/* v3: package workflow */
.dth-package-current{margin-top:18px;padding:16px 18px;border-radius:12px;border:1px solid #dae7de;background:#f9fbf9}
.dth-package-current label{display:block;font-size:13px;font-weight:800;color:var(--dth-green);margin-bottom:7px}
.dth-calculator .dth-package-name{width:100%;border:1px solid #d3e1d7;border-radius:9px;padding:11px 13px;min-height:44px;background:#fff;color:#173e2d;font-size:15px;margin:0}
.dth-package-current p,.dth-package-help{color:#758a7a;font-size:12px;margin:7px 0 0;line-height:1.6}
.dth-package-save-wrap{margin:16px 0 0}
.dth-calculator .dth-save-package{display:block;width:100%;min-height:47px;background:var(--dth-green);color:#fff;border:1px solid var(--dth-green);border-radius:10px;font-size:14px;font-weight:750;cursor:pointer;padding:12px}
.dth-packages-section{border-top:1px solid var(--dth-line);margin-top:26px;padding-top:22px}
.dth-package-count{font-size:12px;color:var(--dth-muted);background:var(--dth-soft);padding:5px 9px;border-radius:18px}
.dth-package-list{border:1px solid var(--dth-line);border-radius:10px;overflow:hidden}
.dth-package-item{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px;border-bottom:1px solid var(--dth-line)}
.dth-package-item:last-child{border-bottom:0}
.dth-package-item-info{display:flex;flex-direction:column;gap:4px;min-width:0;overflow-wrap:anywhere}
.dth-package-item-info strong{font-size:14px;color:#194531}
.dth-package-item-info small{font-size:12px;color:#6d806f}
.dth-package-item-actions{display:flex;gap:5px;flex-shrink:0}
.dth-calculator .dth-package-item-actions button{font-size:12px;border:1px solid #cdded1;padding:7px 10px;border-radius:7px;background:#fff;color:#194531;cursor:pointer}
.dth-calculator .dth-package-item-actions .dth-package-delete{color:#aa3636;border-color:#eccfcf}
.dth-package-empty{font-size:13px;color:#829386;text-align:center;margin:0;padding:22px}
.dth-packages-summary{margin-bottom:15px}
.dth-calculator .dth-all-exports{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:15px}
.dth-calculator .dth-all-exports button:last-child{grid-column:auto}
@media(max-width:560px){.dth-package-item{align-items:flex-start;flex-direction:column}.dth-package-item-actions{width:100%}.dth-calculator .dth-package-item-actions button{flex:1}.dth-calculator .dth-all-exports{grid-template-columns:1fr 1fr}}