:root{--paper:#f6f5f1;--white:#fff;--ink:#203633;--muted:#77847f;--line:#e3e7e1;--green:#246b59;--green-light:#e8f1ea;--orange:#d98553;--red:#b54237;--radius:24px;--shadow:0 5px 28px #253c2f05;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--serif:Georgia,"Times New Roman",serif}
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.note{margin-top:0}.error-text{color:var(--red);background:#fbeae4;padding:11px;border-radius:8px;font-size:12px;line-height:1.5;margin:0}.error-text:empty{display:none}.form-live{font-size:11px;color:var(--green);margin-top:10px}#toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:13px 20px;border-radius:13px;box-shadow:0 8px 25px #192b2025;opacity:0;pointer-events:none;transition:.25s;z-index:100;font-size:12px;line-height:1.5;max-width:calc(100% - 32px);width:max-content}#toast.show{opacity:1;transform:translate(-50%,0)}.hidden{display:none!important}.print-only{display:none}.fade-in{animation:fade-in .35s ease both}.play-icon{width:13px;height:13px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes flow{to{stroke-dashoffset:-.29}}@keyframes pulse{50%{opacity:.4}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fade-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes modal-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes reveal{from{opacity:0}to{opacity:1}}@keyframes grow-in{from{opacity:.25;transform:scaleX(.96)}to{opacity:1;transform:scaleX(1)}}
@media(min-width:1400px){.shell{padding-top:44px}.diagram{height:383px}.page-head{margin-bottom:30px}}
@media(max-width:1050px){.topbar{padding:0 28px}.shell{padding:28px}.workspace{grid-template-columns:220px minmax(0,1fr)}.circuit{grid-template-columns:30px minmax(80px,1fr) auto 32px;gap:10px}.circuit-meter{display:none}.saved{display:none}h1{font-size:37px}.diagram{height:310px}.panel-head,.mode-bar{padding-left:20px;padding-right:20px}.stat{padding:15px}.cut-grid{grid-template-columns:1fr 1fr}.quick-card{padding:23px}.form-grid.three{gap:9px}.quick-main{gap:8px}.quick-main .btn{padding:12px}.project-grid{gap:18px}}
@media(max-width:760px){.topbar{height:70px;padding:0 21px}.desktop-nav{display:none}.saved{display:flex;font-size:10px}.brandname{font-size:17px}.brandmark{width:33px;height:33px;border-radius:10px}.brandmark .icon{width:22px;height:22px}.shell{padding:26px 18px calc(105px + env(safe-area-inset-bottom));max-width:580px}.page-head{align-items:start;margin-bottom:21px;gap:12px}.page-head>.btn{min-height:38px;padding:9px;font-size:0;margin-top:7px;border-radius:11px}.page-head>.btn .icon{width:18px;height:18px}.eyebrow{font-size:9px;letter-spacing:1.6px;margin-bottom:10px}h1{font-size:33px;letter-spacing:-1.4px;max-width:350px;line-height:1.15;margin-bottom:10px}.lead{font-size:11px;max-width:300px}.stats{gap:9px;margin-bottom:19px;grid-template-columns:repeat(2,1fr)}.stat{padding:13px 15px;border-radius:13px}.stat-value{font-size:26px;margin-top:6px}.stat-foot{font-size:9px}.stat-label{font-size:9px}.stat-value small{font-size:11px}.demo-banner{padding:9px 11px;font-size:10px;align-items:start;margin-bottom:17px}.demo-banner>.icon{width:15px;height:15px;margin-top:4px}.demo-banner button{font-size:10px;white-space:normal;min-width:75px;max-width:90px;padding:4px}.workspace{display:flex;flex-direction:column;gap:16px}.rail{position:static;background:transparent;border:0;width:100%;box-shadow:none;overflow:visible}.rail-head{padding:1px 2px 11px}.rail-head h2{font-size:12px}.rail-head .counter{display:none}.zone-list{display:flex;overflow-x:auto;margin:0 -18px;padding:0 18px 7px;gap:9px;scrollbar-width:none}.zone-list::-webkit-scrollbar{display:none}.zone-btn{width:165px;flex-shrink:0;background:#fff;border:1px solid var(--line);padding:12px 10px;gap:8px}.zone-btn.selected{background:#ecf3e7;border-color:#b9cbb0}.zone-icon{width:30px;height:34px;border-radius:8px}.zone-icon .icon{width:16px;height:16px}.zone-copy strong{font-size:11px;max-width:99px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.zone-copy 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.chip{font-size:8px;padding:5px 7px}.canvas-info{padding:11px 15px;font-size:9px;gap:8px}.canvas-info button{font-size:9px}.circuits{padding:0 16px 6px}.circuit{grid-template-columns:27px minmax(75px,1fr) auto 28px;gap:9px;padding:14px 0}.circuit-name{font-size:11px}.circuit-sub{font-size:9px}.circuit-num{width:27px;height:33px;font-size:10px}.circuit-length{font-size:18px}.circuit .icon-btn{width:30px;height:38px}.circuit-length .chip{font-size:8px;padding:3px 4px;margin-top:4px}.footer{display:block;font-size:9px;margin-top:23px}.footer>span:last-child{display:block;margin-top:7px}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;padding:9px 24px calc(8px + env(safe-area-inset-bottom));justify-content:space-around;background:#fafbf5f2;backdrop-filter:blur(18px);border-top:1px solid #dfe6d7;z-index:20;gap:15px}.bottom-nav .navbtn{display:flex;flex-direction:column;gap:5px;min-width:75px;border-radius:12px;font-size:9px;padding:7px 15px;color:#8b9785}.bottom-nav .navbtn .icon{width:21px;height:21px}.bottom-nav .navbtn.active{background:#e8efdf;color:var(--green);box-shadow:none}.cut-grid,.project-grid{grid-template-columns:1fr;gap:16px}.quick-card{border-radius:19px;padding:23px}.quick-card h2{font-size:27px}.quick-main{margin:20px 0 16px}.quick-main .btn{min-height:53px;font-size:12px;padding:12px}.quick-card .form-grid.three .field label{font-size:9px}.quick-card .form-grid.three input,.quick-card .form-grid.three select{padding:11px 8px;font-size:16px}.quick-card .form-grid.three .input-unit input{padding-right:28px}.quick-card .form-grid.three .input-unit>span{right:9px;font-size:9px}.quick-card .field input.big-input{font-size:29px}.quick-result .big-result{font-size:27px}.inventory{padding:0 18px 13px}.inventory-bottom{padding:0 18px 20px}.results .panel-head{align-items:start;padding-bottom:18px}.results .panel-head .action-group{gap:4px}.results .panel-head .btn.small{font-size:10px;padding:8px}.results .panel-head .btn.small .icon{display:none}.results-summary{margin:0 16px 20px}.results-summary>div{padding:13px 10px}.results-summary strong{font-size:22px}.results-summary small{font-size:8px}.results-summary strong span{font-size:10px}.cut-roll{padding:0 17px 24px}.cut-track{height:43px}.cut-piece{font-size:9px}.cut-rest{font-size:9px}.cut-list{grid-template-columns:1fr;gap:2px}.cut-list-item{font-size:10px}.cut-explainer{padding:0 17px 20px}.unassigned{margin:0 17px 20px}.panel-pad{padding:22px}.settings-stack{gap:16px}.form-grid{gap:12px}.field label{font-size:11px}.btn{min-height:46px}.settings-form .btn,.backup-buttons .btn{font-size:12px}.install-note{font-size:11px}dialog{border-radius:22px;width:calc(100% - 20px);max-height:calc(100dvh - 24px)}dialog .modal-head{padding:22px 20px 17px}dialog .modal-body{padding:0 20px 25px}dialog .modal-head h2{font-size:25px}.modal-actions .btn{flex:1;font-size:12px}#toast{bottom:calc(91px + env(safe-area-inset-bottom));font-size:11px}.empty{min-height:330px}.specs 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@media(max-width:370px){.shell{padding-left:13px;padding-right:13px}.topbar{padding:0 16px}.brandname{font-size:15px}.saved{font-size:9px}h1{font-size:29px}.stat{padding:12px}.diagram{height:260px}.diagram-wrap{min-height:268px}.mode-bar{padding-left:12px;padding-right:12px}.legend{gap:7px}.diagram-bottom{padding-left:12px;padding-right:12px}.circuit{gap:6px}.circuit-length{font-size:16px}.quick-card{padding:19px}.quick-main .btn{font-size:10px;padding:10px}.zone-list{margin:0 -13px;padding:0 13px 7px}}
.trace-line{stroke-dasharray:1;stroke-dashoffset:1;animation:trace 1.8s cubic-bezier(.3,.1,.3,1) forwards}.trace-line.pipe-return{animation-delay:.25s}@keyframes trace{to{stroke-dashoffset:0}}
@media(max-width:760px){.stats{grid-template-columns:repeat(4,144px);overflow-x:auto;scrollbar-width:none;margin-left:-18px;margin-right:-18px;padding:0 18px 4px}.stats::-webkit-scrollbar{display:none}.stat{min-height:99px}.segment,.circle-tab{min-height:44px}.circuit{grid-template-columns:27px minmax(70px,1fr) auto 40px}.circuit .icon-btn{width:40px;height:44px}.panel-head .btn.small{min-height:44px;min-width:44px}.mode-bar .btn.small{min-height:44px}.diagram .dim-label,.diagram .surface-name{font-size:12px}.rail-add .btn{min-height:44px}.zone-btn{min-height:65px}.canvas-info button{min-height:34px}.diagram-status{font-size:9px}.stat-value{font-size:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.trace-line{stroke-dashoffset:0}}
@media print{body{background:white;font-size:11px}.topbar,.bottom-nav,.page-head,.demo-banner,.footer,.workspace,.cut-grid,.project-grid,#toast,dialog,.results,.stats{display:none!important}.shell{padding:0;max-width:none}.print-only{display:block}.print-only h1{font-size:28px}.print-only table{width:100%;border-collapse:collapse;font-size:10px;margin:20px 0}.print-only th,.print-only td{padding:9px 6px;border-bottom:1px solid #ddd;text-align:left}.print-only th{font-size:9px;color:#687968}.print-only tr{break-inside:avoid}.print-only p{font-size:10px;line-height:1.6}.print-only a{color:inherit}.print-only .print-roll{break-inside:avoid;margin-bottom:17px}}