.crash-screen{box-sizing:border-box;background:var(--bg,#f7f8f6);min-height:100vh;color:var(--body,#344b43);justify-content:center;align-items:flex-start;padding:16px;font-family:Vazirmatn,Tahoma,sans-serif;display:flex}.crash-card{box-sizing:border-box;background:var(--surface,#fff);border:1px solid var(--line,#d3dfd7);border-radius:14px;width:100%;max-width:640px;margin-top:24px;padding:24px 20px}.crash-heading{color:var(--error,#a34136);align-items:center;gap:10px;display:flex}.crash-heading h1{color:var(--ink,#243e36);margin:0;font-size:1.3rem;line-height:1.6}.crash-card>p{margin:12px 0 18px;font-size:1rem;line-height:1.9}.crash-actions{flex-wrap:wrap;gap:10px;display:flex}.crash-button{border:1px solid var(--line,#d3dfd7);background:var(--surface-subtle,#edf3ee);min-height:48px;color:var(--ink,#243e36);font:inherit;cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:0 16px;font-size:.95rem;font-weight:600;display:inline-flex}.crash-button.primary{background:var(--accent,#26735b);border-color:var(--accent,#26735b);color:#fff}:root[data-theme=dark] .crash-button.primary{color:#10261d}.crash-status{margin:14px 0 0;line-height:1.8}.crash-details{border-top:1px solid var(--line,#d3dfd7);margin-top:18px;padding-top:12px}.crash-details summary{cursor:pointer;min-height:40px;color:var(--muted,#63736a);align-items:center;gap:6px;font-weight:600;list-style:none;display:flex}.crash-details pre{white-space:pre-wrap;word-break:break-word;background:var(--bg,#f7f8f6);border:1px solid var(--line,#d3dfd7);max-height:180px;color:var(--body,#344b43);border-radius:8px;margin:8px 0 0;padding:10px 12px;font-size:.75rem;overflow:auto}.crash-details summary::-webkit-details-marker{display:none}.crash-details[open] summary svg{transform:rotate(180deg)}.crash-code{color:var(--muted,#63736a);margin-top:18px;font-size:.8rem;line-height:1.7;display:block}@media (max-width:480px){.crash-button{flex:100%}}.section-boundary-fallback{border:1px solid var(--error,#a34136);background:var(--error-bg,#fff1ee);color:var(--error,#a34136);border-radius:10px;flex-direction:column;gap:10px;margin:16px 0;padding:16px;display:flex}.section-boundary-title{align-items:center;gap:8px;font-weight:600;display:flex}.section-boundary-fallback p{color:var(--body,#344b43);margin:0}.controls-sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;overflow:hidden;margin:-1px!important;padding:0!important;position:absolute!important}.field.controls-field{font-size:1rem}.field.controls-field small{font-size:.86rem}.numeric-field{min-width:0;margin-bottom:15px}.numeric-field>.field{margin-bottom:0}.numeric-field input{min-height:46px;font-size:1.14rem}.numeric-field .input-suffix{align-items:center;gap:7px}.numeric-input-wrap{flex:1;align-items:center;min-width:0;display:flex;position:relative}.numeric-input-wrap input{text-align:center;width:100%;min-width:0;padding-inline:8px 28px}.numeric-unit-tag{inset-inline-end:7px;color:var(--muted);pointer-events:none;user-select:none;background:0 0;font-size:.65rem;line-height:1.4;position:absolute;bottom:3px}.numeric-field input[aria-invalid=true]{border-color:var(--error);box-shadow:0 0 0 1px var(--error)}.numeric-error{font-size:.78rem;line-height:1.9}.numeric-error p{margin:7px 0}.numeric-error .button{text-wrap:wrap;min-height:40px;padding:5px 9px;font-size:.76rem}.modal[open]{flex-direction:column;display:flex;overflow:hidden}.modal>.modal-heading{z-index:3;flex:none;position:relative}.modal>.modal-body{overscroll-behavior:contain;min-height:0;scroll-padding-top:18px;overflow:auto}.modal .icon-button{min-width:44px;min-height:44px}.modal :focus-visible,.construction-fields :focus-visible,.part-editor-tools :focus-visible{outline:3px solid var(--accent);outline-offset:3px}.template-library .library-intro{color:var(--body);margin:0 0 14px;font-size:.88rem;line-height:1.9}.template-library .library-filters{border-bottom:1px solid var(--line);background:var(--surface);margin-bottom:16px;padding:0 0 12px}.template-library .library-filters .field{margin-bottom:4px}.template-library .search-input{min-width:0}.template-library .search-input input{min-height:44px;font-size:1rem}.template-library .library-result-summary{justify-content:space-between;align-items:center;gap:12px;min-height:44px;display:flex}.template-library .library-result-summary p{color:var(--muted);margin:0;font-size:.8rem}.template-library .library-result-summary .button{min-height:44px;padding:5px 9px;font-size:.75rem}.template-library .template-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.template-library .template-card{text-align:start;grid-template-columns:78px minmax(0,1fr) 18px;align-items:center;gap:10px;padding:12px;display:grid}.template-library .template-card[hidden]{display:none}.template-library .template-thumbnail{width:78px;display:block;overflow:hidden}.template-library .template-thumbnail svg{width:100%;height:auto;display:block}.template-library .template-card-copy{flex-direction:column;gap:6px;min-width:0;display:flex}.template-library .template-card-copy b{font-size:1.04rem;line-height:1.7}.template-library .template-card-copy small{color:var(--muted);font-size:.92rem;line-height:1.85}.template-library .template-dimensions{color:var(--muted);font-size:.82rem;line-height:1.8}.template-library .template-card>svg:last-child{align-self:center;margin:0}.template-library .template-dimensions bdi,.part-edit-summary bdi{white-space:nowrap;direction:ltr;unicode-bidi:isolate;display:inline-block}.template-library .library-more{color:var(--muted);justify-content:center;align-items:center;gap:14px;margin:20px 0;font-size:.75rem;display:flex}.template-library .saved-template-list{border-top:1px solid var(--line);margin-top:20px;padding-top:15px}.template-library .saved-template{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:10px 0;display:flex}.template-library .saved-template>button:first-child{text-align:start;flex:1;justify-content:flex-start}.template-library .saved-template span{flex-direction:column;gap:5px;display:flex}.template-library .saved-template small{color:var(--muted);font-size:.72rem}.construction-fields>details{border:1px solid var(--line);background:var(--surface);border-radius:10px;margin:12px 0;padding:0 14px 12px}.construction-fields>details:not([open]){padding-bottom:0}.construction-fields summary{cursor:pointer;min-height:48px;padding:12px 0;font-weight:600;line-height:1.8}.construction-fields .check-row{align-items:center;gap:10px;min-height:44px;margin:8px 0;line-height:1.9;display:flex}.construction-fields input[type=checkbox]{flex-shrink:0;width:20px;height:20px}.construction-fields .construction-intro{color:var(--muted);font-size:.8rem;line-height:1.9}.construction-fields .hardware-state{color:var(--muted);margin:8px 0;font-size:.78rem;line-height:1.9}.part-editor-tools .part-search{margin:14px 0}.part-editor-tools .part-search input{min-height:44px}.part-edit-summary{border:1px solid var(--line);border-radius:8px;margin-bottom:16px;padding:12px;font-size:.8rem;line-height:1.9}.part-edit-summary b{display:block}.part-edit-advanced{border-top:1px solid var(--line);margin-top:12px;padding-top:8px}.part-edit-advanced summary{cursor:pointer;min-height:44px;padding:10px 0;font-weight:600}@media (max-width:650px){.template-library .template-grid{grid-template-columns:1fr}.template-library .template-card{grid-template-columns:70px minmax(0,1fr) 18px}.template-library .template-thumbnail{width:70px}.template-library .library-filters .form-grid{grid-template-columns:1fr;gap:10px}.template-library .library-more{flex-wrap:wrap}.construction-fields .form-grid{grid-template-columns:1fr}.construction-fields>details{padding-inline:12px}.modal>.modal-body{padding-bottom:max(18px,env(safe-area-inset-bottom))}.part-editor-tools .panel-heading{flex-wrap:wrap}.numeric-field .input-suffix>span{max-width:70px}}.stepper-btn{background:var(--surface-subtle,#0000000a);border:1px solid var(--border,#cbd5e1);border-radius:var(--radius,8px);min-width:44px;min-height:44px;color:var(--ink);cursor:pointer;user-select:none;touch-action:manipulation;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:background .15s,opacity .15s;display:inline-flex}.stepper-btn:hover:not(:disabled){background:var(--surface-hover,#00000014)}.stepper-btn:active:not(:disabled){transform:scale(.96)}.stepper-btn:disabled{opacity:.35;cursor:not-allowed}.form-grid.three{grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:10px}.form-grid.three .stepper-btn{width:36px;min-width:36px;height:42px;min-height:42px}.form-grid.three .numeric-field .input-suffix{gap:4px}.form-grid.three .numeric-unit-tag{display:none}.stock-quantity-field{border:0;min-width:0;margin:0;padding:0;display:block}.numeric-field input{flex:1;width:100%;min-width:0}.sheet-diagram-container{width:100%;position:relative}@media (max-width:650px){.form-grid,.form-grid.two,.form-grid.three,.materials-grid .form-grid,.unit-editor .form-grid{grid-template-columns:1fr!important}.stepper-btn{min-width:44px;min-height:44px}}.dk-promo,.dk-companion{--dk-bg:#fbf7ef;--dk-line:#e8ddc9;--dk-title:#1f4a3d;--dk-body:#4a4a40;--dk-fine:#6b6658;--dk-chip-line:#cdbf9f;--dk-chip-text:#6b5a3a;--dk-gold:#a67842;--dk-kicker:#8a6532;--dk-cta-bg:#234a3e;--dk-cta-text:#fbf7ef;--dk-cta-hover:#1b3a30;--dk-tag-bg:#1f4a3de0;--dk-caption-bg:#fbf7eff0;border:1px solid var(--dk-line);background:var(--dk-bg);min-width:0;color:var(--dk-body);overflow-wrap:break-word;text-align:start;border-radius:16px;flex-direction:column;gap:8px;margin:16px 0;padding:16px;display:flex;box-shadow:0 1px 2px #0000000f}:root[data-theme=dark] .dk-promo,:root[data-theme=dark] .dk-companion{--dk-bg:#1c2622;--dk-line:#33413a;--dk-title:#efe6d2;--dk-body:#c9c2b2;--dk-fine:#a39c8c;--dk-chip-line:#5c5445;--dk-chip-text:#cdbf9f;--dk-gold:#c9a46e;--dk-kicker:#d9be8c;--dk-cta-bg:#e3cfa6;--dk-cta-text:#1c2622;--dk-cta-hover:#efdcb6;--dk-caption-bg:#1c2622e6;box-shadow:none}.dk-promo__head{align-items:center;gap:10px;min-height:44px;display:flex}.dk-promo__icon{border-radius:8px;flex:0 0 32px;width:32px;height:32px}.dk-promo__brand{flex-wrap:wrap;flex:auto;align-items:center;gap:4px 8px;min-width:0;display:flex}.dk-promo__sponsor{color:var(--dk-title);white-space:nowrap;font-size:.9375rem;font-weight:700}.dk-promo__ad{border:1px solid var(--dk-chip-line);color:var(--dk-chip-text);white-space:nowrap;border-radius:999px;padding:1px 8px;font-size:.75rem;line-height:1.8}.dk-promo__close{width:44px;height:44px;color:var(--dk-fine);background:0 0;border:0;border-radius:12px;flex:0 0 44px;place-items:center;margin-inline-end:-8px;padding:0;display:grid}.dk-promo__kicker{color:var(--dk-kicker);margin:0;font-size:.8125rem;font-weight:600;line-height:1.6}.dk-promo__title{color:var(--dk-title);margin:0;font-size:1.0625rem;font-weight:700;line-height:1.7}.dk-promo__body{color:var(--dk-body);margin:0;font-size:.875rem;line-height:1.85}.dk-promo__bullets{gap:4px;margin:0;padding:0;list-style:none;display:grid}.dk-promo__bullets li{color:var(--dk-body);align-items:flex-start;gap:8px;font-size:.875rem;line-height:1.75;display:flex}.dk-promo__bullets svg{color:var(--dk-gold);flex:0 0 16px;margin-top:.25em}.dk-promo__figure{grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;margin:2px 0;display:grid}.dk-promo__shot{border-radius:10px;grid-row:1;min-width:0;display:grid;overflow:hidden}.dk-promo__shot:first-child{grid-column:1}.dk-promo__shot:nth-child(2){grid-column:2}.dk-promo__shot>*{grid-area:1/1}.dk-promo__shot img{aspect-ratio:3/2;object-fit:cover;width:100%;height:auto;display:block}.dk-promo__tag{background:var(--dk-tag-bg);color:#fff;border-radius:999px;place-self:start;margin:6px;padding:0 8px;font-size:.75rem;font-weight:600;line-height:1.8}.dk-promo__caption{background:var(--dk-caption-bg);color:var(--dk-body);border-radius:999px;grid-area:1/1/2/3;place-self:end center;margin:0 0 6px;padding:0 10px;font-size:.75rem;line-height:1.8}.dk-promo__cta,.dk-companion__cta{background:var(--dk-cta-bg);width:100%;min-height:48px;color:var(--dk-cta-text);text-align:center;border:0;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:1rem;font-weight:700;line-height:1.5;text-decoration:none;display:flex}.dk-promo__fine{color:var(--dk-fine);margin:0;font-size:.75rem;line-height:1.8}.dk-promo--banner .dk-promo__title,.dk-promo--tip .dk-promo__title{font-size:1rem}.dk-promo--tip .dk-promo__icon{flex-basis:28px;width:28px;height:28px}.dk-promo--banner .dk-promo__figure{width:100%;max-width:22.5rem}.dk-promo--banner .dk-promo__shot img{max-height:7.5rem}.materials-grid>.dk-promo,.materials-grid>.dk-promo-closed{align-self:start;margin:0}.dk-promo-closed{border:1px dashed var(--line);color:var(--muted);border-radius:12px;margin:12px 0;padding:10px 14px;font-size:.86rem;line-height:1.75}.dk-promo-closed:focus{outline:none}.dk-promo-closed:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.dk-companion{margin:0}.dk-companion__head{align-items:center;gap:12px;display:flex}.dk-companion__icon{border-radius:12px;flex:0 0 48px;width:48px;height:48px}.dk-companion__head>span{justify-items:start;gap:4px;min-width:0;display:grid}.dk-companion__name{color:var(--dk-title);margin:0;font-size:1rem;font-weight:700;line-height:1.7}.dk-companion__restore{min-height:44px;color:var(--dk-title);text-underline-offset:4px;background:0 0;border:0;align-self:flex-start;padding:8px 4px;font-size:.875rem;font-weight:600;text-decoration:underline}.dk-companion__status{color:var(--dk-body);margin:0;font-size:.875rem}.dk-companion__status:focus{outline:none}.dk-companion__status:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.dk-restore-panel{flex-direction:column;align-items:flex-start;gap:10px;display:flex}.settings-panel.dk-restore-panel>.button{white-space:normal;text-align:start;margin:0}.dk-restore-panel .dk-companion__status{color:var(--muted);line-height:1.8}@media (hover:hover) and (pointer:fine){.dk-promo__cta:hover,.dk-companion__cta:hover{background:var(--dk-cta-hover)}.dk-promo__close:hover{background:var(--dk-line)}}@media print{.dk-promo,.dk-promo-closed,.dk-companion{display:none!important}}.essential-workspace{flex-direction:column;gap:20px;max-width:1080px;margin:0 auto;padding-bottom:48px;display:flex}.essential-header-bar{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-apple-ambient);border-radius:14px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px;display:flex}.essential-header-info{flex-direction:column;gap:6px;display:flex}.essential-badge{background:var(--amber-soft);color:var(--amber);border:1px solid #92632f33;border-radius:20px;align-self:flex-start;align-items:center;gap:6px;padding:4px 10px;font-size:.82rem;font-weight:600;display:inline-flex}.essential-header-subtitle{color:var(--muted);font-size:.88rem}.essential-upgrade-btn{background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent);cursor:pointer;transition:all .2s var(--ease-apple-spring);border-radius:10px;align-items:center;gap:8px;padding:10px 18px;font-size:.95rem;font-weight:600;display:inline-flex}.essential-upgrade-btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}.essential-header-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.essential-guide-btn{background:var(--amber-soft);color:var(--amber);border:1px solid var(--amber);cursor:pointer;transition:all .2s var(--ease-apple-spring);border-radius:10px;align-items:center;gap:8px;padding:10px 16px;font-family:inherit;font-size:.9rem;font-weight:600;display:inline-flex}.essential-guide-btn:hover{background:var(--surface-hover);background:color-mix(in srgb, var(--amber-soft) 80%, var(--amber) 20%);transform:translateY(-1px)}.essential-formula-hint{background:var(--surface-subtle);border:1px dashed var(--line);color:var(--muted);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;padding:10px 14px;font-size:.82rem;display:flex}.essential-formula-hint span{color:var(--ink);font-weight:500}.essential-inline-guide-link{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:0;font-family:inherit;font-size:.82rem;font-weight:700;text-decoration:underline}.essential-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-apple-ambient);border-radius:16px;flex-direction:column;gap:18px;padding:24px;display:flex}.essential-card-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding-bottom:14px;display:flex}.essential-card-header h2{color:var(--ink);align-items:center;gap:10px;margin:0;font-size:1.25rem;display:flex}.essential-mode-toggle{background:var(--surface-subtle);border-radius:10px;gap:4px;padding:4px;display:flex}.essential-mode-toggle button{min-width:0;height:auto;min-height:44px;color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:8px;flex:1 1 0;padding:8px 12px;font-family:inherit;font-size:.92rem;font-weight:500;line-height:1.4;transition:all .15s}.essential-mode-toggle button.active{background:var(--surface);color:var(--accent);font-weight:600;box-shadow:0 1px 4px #00000014}.essential-meter-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;display:grid}.essential-input-box{background:var(--surface-subtle);border:1px solid var(--line);border-radius:12px;flex-direction:column;gap:10px;padding:16px;display:flex}.essential-input-label{color:var(--ink);justify-content:space-between;align-items:center;font-size:1rem;font-weight:600;display:flex}.essential-input-label small{color:var(--muted);font-size:.8rem;font-weight:400}.essential-stepper-wrap{align-items:center;gap:10px;display:flex}.essential-big-stepper-btn{background:var(--surface);border:1px solid var(--line);width:50px;height:50px;color:var(--ink);cursor:pointer;touch-action:manipulation;border-radius:12px;justify-content:center;align-items:center;font-size:1.4rem;transition:all .15s;display:flex}.essential-big-stepper-btn:hover:not(:disabled){background:var(--surface-hover);border-color:var(--accent);color:var(--accent)}.essential-big-stepper-btn:active:not(:disabled){transform:scale(.94)}.essential-rate-steps{grid-template-columns:1fr 1fr;gap:10px;display:grid}.essential-step-rate-btn{background:var(--surface);border:1px solid var(--line);min-height:44px;color:var(--ink);white-space:nowrap;cursor:pointer;touch-action:manipulation;border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-family:inherit;font-size:.9rem;font-weight:600;display:inline-flex}.essential-step-rate-btn:hover{border-color:var(--accent);color:var(--accent)}.essential-input-field-wrap{flex:1;align-items:center;display:flex;position:relative}.essential-input-field-wrap .essential-big-input{width:100%;min-width:0;padding-inline:12px 58px}.essential-input-suffix{color:var(--muted);pointer-events:none;font-size:.88rem;font-weight:600;position:absolute;inset-inline-end:14px}.essential-big-input{text-align:center;height:50px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:12px;flex:1;padding:0 12px;font-family:inherit;font-size:clamp(1.05rem,4.6vw,1.35rem);font-weight:700}.essential-big-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.essential-custom-mat-row{background:var(--surface-subtle);border:1px solid var(--line);border-radius:12px;flex-direction:column;gap:8px;margin-top:10px;padding:14px;display:flex}.essential-custom-mat-input{background:var(--surface);border:1px solid var(--line);height:44px;color:var(--ink);border-radius:8px;padding:0 14px;font-size:.95rem}.essential-custom-mat-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px 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