:root{--nav:#07192d;--nav2:#113963;--bg:#eaf2f9;--card:#fff;--blue:#1268c7;--green:#10893e;--orange:#b86100;--red:#b42318;--text:#07182f;--muted:#5a6a7f;--line:#d6e0eb}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}.sidebar{position:fixed;left:0;top:0;bottom:0;width:330px;background:var(--nav);padding:18px 14px;overflow:auto}.brand{display:flex;gap:14px;align-items:center;margin-bottom:26px}.logo{width:56px;height:56px;border-radius:16px;background:#2f82f3;display:grid;place-items:center;color:#fff;font-weight:800;font-size:22px}.brand h1{font-size:21px;color:#fff;margin:0}.brand p{color:#b8d6ff;margin:4px 0 0}.nav-section{color:#74b8ff;letter-spacing:4px;font-weight:800;font-size:14px;margin:22px 0 8px}.nav{display:block;width:100%;text-align:left;border:0;background:transparent;color:white;font-weight:700;padding:14px 16px;border-radius:12px;font-size:16px;margin:4px 0;cursor:pointer}.nav:hover,.nav.active{background:#244a75}.main{margin-left:330px;padding:24px 28px}.hero{background:#fff;border-radius:24px;padding:28px;display:flex;justify-content:space-between;gap:20px;align-items:flex-start;box-shadow:0 1px 0 #dbe6f1}.hero h2{font-size:34px;margin:0 0 10px}.hero p{font-size:18px;margin:0;line-height:1.55}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}button{border:0;border-radius:12px;background:#385a7d;color:#fff;padding:13px 20px;font-weight:800;font-size:15px;cursor:pointer}button.primary{background:var(--blue)}button.good{background:var(--green)}button.bad{background:var(--orange)}button.danger{background:var(--red)}.cards{display:grid;grid-template-columns:repeat(4,minmax(180px,1fr));gap:18px;margin:22px 0}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.card small{display:block;color:var(--muted);font-size:14px}.card strong{font-size:28px}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin:20px 0}.panel h3{font-size:24px;margin:0 0 16px}.section-title{font-size:20px;font-weight:900;margin:22px 0 12px;color:#0b315d}.grid{display:grid;grid-template-columns:repeat(4,minmax(190px,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-weight:700;color:#213954}.field span{font-size:12px;color:#65788f}.field input,.field select,.field textarea{border:1px solid #cbd8e5;border-radius:10px;padding:11px;font-size:15px;background:#fbfdff}.field textarea{min-height:90px}.savebar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:18px 0}.status{font-weight:800;color:#087f3e}.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{border:1px solid #d7e1ed;padding:10px;text-align:left}.table th{background:#f2f6fb}.pass{color:#10893e;font-weight:900}.fail{color:#b42318;font-weight:900}.warn{color:#b86100;font-weight:900}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.tab{background:#e8f1fb;color:#12395e;border:1px solid #c8d9eb}.tab.active{background:#1268c7;color:#fff}.canvas-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.chartbox{background:#fff;border:1px solid #dbe6f1;border-radius:16px;padding:14px}.chartbox h4{margin:0 0 8px}canvas{width:100%;height:290px;border-radius:12px;background:#fff}.note{line-height:1.7;color:#314a64;font-size:16px}.mono{font-family:Consolas,monospace;background:#f4f7fb;border:1px solid #dce7f3;border-radius:12px;padding:12px;white-space:pre-wrap}.pill{display:inline-block;border-radius:99px;padding:4px 10px;font-weight:800;background:#eaf3ff;color:#0b5fb8}@media(max-width:1100px){.sidebar{position:relative;width:auto}.main{margin-left:0}.grid,.cards,.canvas-grid{grid-template-columns:1fr}.hero{flex-direction:column}}
.freq-details{border:1px solid var(--line);border-radius:14px;margin:14px 0;background:#fbfdff;overflow:hidden}.freq-details summary{cursor:pointer;font-weight:900;font-size:18px;padding:16px 18px;background:#eef5fc;color:#103a65;display:flex;justify-content:space-between}.freq-details summary span{font-size:12px;background:#dcecff;border-radius:99px;padding:4px 9px}.freq-details .grid{padding:18px}.freq-grid{grid-template-columns:repeat(3,minmax(220px,1fr))}.field.span2{grid-column:span 2}.field small{color:#516579}.sticky-actions{position:sticky;top:0;z-index:4;background:rgba(234,242,249,.97);padding:10px;border-radius:14px;backdrop-filter:blur(8px)}.table-scroll{overflow:auto}.freq-charts{grid-template-columns:repeat(2,minmax(420px,1fr))}.freq-charts canvas{height:320px}@media(max-width:1250px){.freq-grid,.freq-charts{grid-template-columns:1fr 1fr}.field.span2{grid-column:span 2}}@media(max-width:850px){.freq-grid,.freq-charts{grid-template-columns:1fr}.field.span2{grid-column:span 1}}

/* V6.17 Excel data exchange */
.excel-io-panel{border:1px solid #9bbfe5;background:#f7fbff}
.excel-upload-button{display:inline-flex;align-items:center;padding:10px 16px;border-radius:8px;background:#2e5f8a;color:#fff;font-weight:700;cursor:pointer}
.excel-upload-button:hover{filter:brightness(.95)}

/* V6.21 uniform Working Principle tables — Reactive, Primary, LVRT and HVRT */
.reactive-working,.primary-working,.lvrt-working,.hvrt-working{line-height:1.55}
.reactive-working h4,.primary-working h4,.lvrt-working h4,.hvrt-working h4{margin:24px 0 10px;color:#0b3f73;font-size:19px}
.wp-table{width:100%;border-collapse:collapse;margin:10px 0 20px;background:#fff;table-layout:auto}
.wp-table th,.wp-table td{border:1px solid #cfdce9;padding:10px 12px;vertical-align:top;line-height:1.5}
.wp-table th{background:#eaf2f9;color:#123d67;text-align:left;font-weight:800}
.wp-table td:first-child{font-weight:700;color:#0b3f73;min-width:170px}
.wp-table tr:nth-child(even) td{background:#fbfdff}
.wp-table code{white-space:normal;font-family:Consolas,monospace;color:#102e4d}
.wp-flow-table td:first-child{width:26%}
.wp-input-table td:first-child{width:22%}
.wp-algorithm-table td:first-child{width:22%}
.wp-output-table td:first-child{width:24%}
.wp-ga-table td:first-child{width:24%}
@media(max-width:900px){.wp-table{display:block;overflow-x:auto;white-space:normal}.wp-table th,.wp-table td{min-width:180px}}

/* V6.30 Intelligent Optimisation & Root-Cause Diagnosis */
#optResults .table td,#optResults .table th{vertical-align:top}
#optResults .card strong{line-height:1.25;display:block}

/* V6.31 Optimisation page: controls and tabs are contained within the module page */
.opt-command-panel{margin-bottom:14px}
.opt-command-panel .button-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.opt-result-tabs{margin-bottom:16px;display:flex;flex-wrap:wrap;gap:8px}
.opt-result-tabs .result-tab{white-space:normal;min-height:42px}

/* V6.33 optimisation module selector */
.opt-module-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin-top:12px}
.opt-module-card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;min-height:76px;padding:14px 16px;border:1px solid #cbd9e8;border-radius:14px;background:#fff;color:#17324d;text-align:left;box-shadow:none}
.opt-module-card span{font-weight:700;line-height:1.25}
.opt-module-card small{font-weight:700}
.opt-module-card.active{outline:3px solid #1f6fd1;border-color:#1f6fd1;background:#eef6ff}
.opt-module-card:hover{transform:translateY(-1px)}
/* Version 8.0 integrated platform */
.v8-tabs{overflow-x:auto;white-space:nowrap;padding-bottom:5px}.v8-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.v8-chart-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(520px,1fr));gap:18px}.v8-chart-grid canvas{width:100%;height:auto;border:1px solid #dbe3ec;border-radius:8px;background:#fff}.v8-toast{position:fixed;right:24px;bottom:24px;background:#087f5b;color:#fff;padding:12px 18px;border-radius:8px;opacity:0;transform:translateY(15px);transition:.25s;z-index:9999}.v8-toast.show{opacity:1;transform:none}.v8-net,.v8-prot{min-width:70px;width:100%;box-sizing:border-box}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.metric{background:#f6f9fc;border:1px solid #dbe3ec;border-radius:8px;padding:15px;text-align:center}.metric b{display:block;font-size:22px}.metric span{font-size:12px;color:#667085}.linkbtn{border:0;background:none;color:#0969da;text-decoration:underline;cursor:pointer}.report-section{page-break-inside:avoid;margin:24px 0}.badge.warn{background:#fff3cd;color:#7a5b00}
@media print{.sidebar,.topbar,.hero-actions,.tabs,.v8-toolbar{display:none!important}.main{margin:0!important}.panel{box-shadow:none;border:0}.report-section{page-break-inside:avoid}}

/* =====================================================================
   GridDynamics Version 10.0 — Professional engineering workspace shell
   A distinct product UI inspired by modern industrial software patterns.
   Existing module layouts and calculation logic remain unchanged.
   ===================================================================== */
:root{
  --gd-navy-950:#061425;--gd-navy-900:#0a1e35;--gd-navy-850:#0d2744;
  --gd-blue-700:#145fa8;--gd-blue-600:#1672c4;--gd-blue-500:#2488dc;
  --gd-cyan:#28b8ca;--gd-green:#18a06a;--gd-amber:#d99221;--gd-danger:#d94b4b;
  --gd-surface:#ffffff;--gd-surface-2:#f6f8fb;--gd-surface-3:#edf2f7;
  --gd-canvas:#e9eef4;--gd-text:#14243a;--gd-text-2:#4f6278;--gd-text-3:#718197;
  --gd-border:#d8e0e9;--gd-border-strong:#c4cfdb;--gd-shadow:0 10px 30px rgba(15,35,58,.08);
  --gd-sidebar-w:306px;--gd-sidebar-collapsed:76px;--gd-topbar-h:58px;--gd-ribbon-h:74px;--gd-status-h:28px;
  --nav:var(--gd-navy-950);--bg:var(--gd-canvas);--card:var(--gd-surface);--blue:var(--gd-blue-600);
  --green:var(--gd-green);--orange:var(--gd-amber);--red:var(--gd-danger);--text:var(--gd-text);
  --muted:var(--gd-text-2);--line:var(--gd-border);
}
html[data-theme="dark"]{
  --gd-surface:#101d2d;--gd-surface-2:#142438;--gd-surface-3:#192b41;--gd-canvas:#0c1725;
  --gd-text:#e9f2fb;--gd-text-2:#aebfd1;--gd-text-3:#8296ac;--gd-border:#293c52;--gd-border-strong:#37506b;
  --gd-shadow:0 12px 34px rgba(0,0,0,.26);
}
html,body{min-height:100%;}
body{overflow:hidden;background:var(--gd-canvas);font-family:"Segoe UI Variable","Inter","Segoe UI",Arial,sans-serif;letter-spacing:.003em}
button,input,select,textarea{font:inherit}
.app-shell{height:100vh;display:flex;overflow:hidden;background:var(--gd-canvas)}
.sidebar{position:relative;flex:0 0 var(--gd-sidebar-w);width:var(--gd-sidebar-w);height:100vh;padding:0;background:linear-gradient(180deg,var(--gd-navy-950),#07192d 72%,#05111e);overflow:hidden;z-index:40;box-shadow:8px 0 22px rgba(0,0,0,.12);transition:width .24s ease,flex-basis .24s ease}
.brand-area{height:82px;display:flex;align-items:center;padding:0 17px;border-bottom:1px solid rgba(255,255,255,.08);position:relative}
.brand{margin:0;gap:12px;min-width:0}.logo-mark{position:relative;width:46px;height:46px;flex:0 0 46px;border-radius:11px;background:linear-gradient(145deg,#20a3dd,#1564b1);box-shadow:0 8px 22px rgba(23,131,205,.35),inset 0 1px rgba(255,255,255,.35);display:grid;place-items:center;overflow:hidden}.logo-bolt{font-size:28px;font-weight:900;color:white;line-height:1;transform:skew(-5deg)}.logo-wave{position:absolute;bottom:8px;left:7px;width:32px;height:5px;border-top:2px solid rgba(255,255,255,.8);border-radius:50%}.brand-copy{min-width:0}.brand h1{font-size:20px;letter-spacing:.2px;white-space:nowrap}.brand p{margin:3px 0 0;font-size:11px;letter-spacing:.6px;text-transform:uppercase;color:#8db9df;white-space:nowrap}.sidebar-collapse{margin-left:auto;background:rgba(255,255,255,.08)!important;color:#cfe7fb!important;width:28px!important;height:28px!important;font-size:22px!important}.project-context{margin:14px 14px 10px;padding:11px;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.045);border-radius:10px;display:flex;gap:10px;align-items:center}.project-avatar{width:34px;height:34px;flex:0 0 34px;border-radius:8px;background:linear-gradient(135deg,#1b7bc7,#21a4bb);display:grid;place-items:center;color:#fff;font-size:12px;font-weight:800}.project-context-copy{min-width:0;display:flex;flex-direction:column}.project-context-copy small{color:#6fa3cd;font-size:9px;font-weight:800;letter-spacing:1.2px}.project-context-copy strong{color:#fff;font-size:13px;margin:2px 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.project-context-copy span{color:#91a9bf;font-size:10px}.status-dot{display:inline-block;width:6px;height:6px;background:#30c887;border-radius:50%;box-shadow:0 0 0 3px rgba(48,200,135,.15);margin-right:5px}.nav-search-wrap{height:38px;margin:0 14px 8px;border:1px solid rgba(255,255,255,.09);border-radius:8px;display:flex;align-items:center;padding:0 9px;background:rgba(0,0,0,.14);gap:7px}.nav-search-icon{color:#8eb1ce;font-size:18px}.nav-search{min-width:0;width:100%;background:transparent;border:0;outline:0;color:#eaf5ff;font-size:12px}.nav-search::placeholder{color:#708aa2}.nav-search-wrap kbd{font-size:8px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#8ca8bf;border-radius:4px;padding:2px 4px;white-space:nowrap}.nav-scroll{height:calc(100vh - 82px - 69px - 56px - 76px);overflow-y:auto;overflow-x:hidden;padding:3px 8px 18px;scrollbar-width:thin;scrollbar-color:#294763 transparent}.nav-scroll::-webkit-scrollbar{width:5px}.nav-scroll::-webkit-scrollbar-thumb{background:#294763;border-radius:6px}.nav-group{margin:3px 0 8px}.nav-group-title{display:flex;width:100%;height:34px;padding:0 10px;align-items:center;gap:8px;border-radius:6px;background:transparent;color:#6f9fc7;font-size:10px;font-weight:800;letter-spacing:1.2px;text-align:left}.nav-group-title:hover{background:rgba(255,255,255,.04)}.nav-group-title b{margin-left:auto;font-size:13px;transition:transform .2s}.nav-group-icon{font-size:11px;color:#3ba9dc}.nav-group.collapsed .nav-group-title b{transform:rotate(-90deg)}.nav-group.collapsed .nav-group-items{display:none}.nav{position:relative;display:flex;align-items:center;gap:10px;width:100%;min-height:37px;margin:1px 0;padding:8px 10px;border-radius:6px;color:#b8cadd;font-size:12px;font-weight:600;transition:background .14s,color .14s,transform .14s}.nav:hover{background:rgba(45,135,201,.14);color:#fff}.nav.active{background:linear-gradient(90deg,rgba(33,133,201,.32),rgba(33,133,201,.12));color:#fff;box-shadow:inset 3px 0 #28a8e0}.nav.active:after{content:"";position:absolute;right:8px;width:5px;height:5px;border-radius:50%;background:#42c8ec;box-shadow:0 0 0 3px rgba(66,200,236,.12)}.nav-icon{display:grid;place-items:center;width:23px;height:23px;flex:0 0 23px;color:#67a9d6;background:rgba(255,255,255,.045);border-radius:5px;font-family:Consolas,monospace;font-weight:800}.nav.active .nav-icon{color:#fff;background:#1672c4}.nav-label{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-state{margin-left:auto;color:#30c887}.sidebar-footer{position:absolute;bottom:0;left:0;right:0;padding:9px 13px 12px;background:linear-gradient(0deg,#05111e 72%,transparent)}.license-card{border-top:1px solid rgba(255,255,255,.08);padding:10px 4px 0;display:flex;flex-direction:column}.license-card span{color:#39b4d2;font-size:8px;letter-spacing:1.5px;font-weight:900}.license-card strong{color:#d8e9f7;font-size:11px;margin:2px 0}.license-card small{color:#678198;font-size:9px}
.workspace{min-width:0;flex:1;height:100vh;display:grid;grid-template-rows:var(--gd-topbar-h) var(--gd-ribbon-h) minmax(0,1fr) var(--gd-status-h);overflow:hidden}.topbar{height:var(--gd-topbar-h);display:flex;align-items:center;padding:0 18px;background:var(--gd-surface);border-bottom:1px solid var(--gd-border);z-index:25}.topbar-left{display:flex;align-items:center;min-width:260px}.breadcrumbs{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--gd-text-3);white-space:nowrap}.breadcrumbs strong{color:var(--gd-text);font-weight:700}.breadcrumbs b{font-size:15px;color:var(--gd-border-strong)}.topbar-center{flex:1;display:flex;justify-content:center;padding:0 20px}.global-search-trigger{height:34px;min-width:360px;max-width:540px;width:60%;border:1px solid var(--gd-border);border-radius:7px;padding:0 10px;background:var(--gd-surface-2);color:var(--gd-text-3);display:flex;align-items:center;gap:8px;font-size:11px;font-weight:500}.global-search-trigger:hover{border-color:var(--gd-blue-500);background:var(--gd-surface)}.global-search-trigger kbd{margin-left:auto;border:1px solid var(--gd-border);border-radius:4px;background:var(--gd-surface);padding:2px 5px;color:var(--gd-text-3);font-size:9px}.topbar-actions{display:flex;align-items:center;gap:7px}.icon-button{display:grid;place-items:center;padding:0!important;width:34px;height:34px;border-radius:7px;background:transparent!important;color:var(--gd-text-2)!important;font-size:16px}.icon-button:hover{background:var(--gd-surface-3)!important}.mobile-menu{display:none!important}.notification-button{position:relative}.notification-button i{position:absolute;right:7px;top:6px;width:6px;height:6px;border-radius:50%;background:#ee625f;border:1px solid var(--gd-surface)}.user-menu{height:40px;margin-left:4px;padding-left:9px;border-left:1px solid var(--gd-border);display:flex;align-items:center;gap:8px}.user-avatar{width:31px;height:31px;border-radius:8px;background:linear-gradient(135deg,#176bb2,#28a6bd);display:grid;place-items:center;color:#fff;font-size:10px;font-weight:800}.user-menu div:nth-child(2){display:flex;flex-direction:column}.user-menu strong{font-size:11px;color:var(--gd-text)}.user-menu small{font-size:9px;color:var(--gd-text-3)}.user-menu>span{font-size:10px;color:var(--gd-text-3)}
.ribbon{height:var(--gd-ribbon-h);display:flex;align-items:stretch;padding:6px 17px;background:var(--gd-surface-2);border-bottom:1px solid var(--gd-border);box-shadow:0 3px 10px rgba(20,40,65,.03);z-index:20}.ribbon-group{display:flex;flex-direction:column;justify-content:center}.ribbon-group>small{font-size:8px;letter-spacing:1.3px;color:var(--gd-text-3);font-weight:800;margin:0 0 3px 4px}.ribbon-group>div{display:flex}.ribbon-action{min-width:58px;height:45px;padding:3px 7px;border-radius:6px;background:transparent;color:var(--gd-text-2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:10px}.ribbon-action span{font-size:16px;color:var(--gd-blue-600);line-height:1}.ribbon-action b{font-size:9px;font-weight:650;white-space:nowrap}.ribbon-action:hover{background:var(--gd-surface);box-shadow:0 1px 3px rgba(20,45,70,.1)}.ribbon-divider{width:1px;background:var(--gd-border);margin:6px 13px}.ribbon-spacer{flex:1}.study-health{display:flex;align-items:center;gap:9px;border-left:1px solid var(--gd-border);padding-left:18px;margin:6px 0}.health-indicator{width:9px;height:9px;border-radius:50%;background:#28b77a;box-shadow:0 0 0 5px rgba(40,183,122,.1)}.study-health div{display:flex;flex-direction:column}.study-health small{font-size:8px;color:var(--gd-text-3);font-weight:800;letter-spacing:1px}.study-health strong{font-size:10px;color:var(--gd-text-2)}
.main{margin:0!important;padding:16px 18px 28px;min-width:0;overflow-y:auto;overflow-x:hidden;background:var(--gd-canvas);scrollbar-color:var(--gd-border-strong) transparent}.hero{min-height:105px;border:1px solid var(--gd-border);border-radius:9px;padding:17px 19px;background:linear-gradient(135deg,var(--gd-surface),var(--gd-surface-2));box-shadow:0 2px 10px rgba(20,43,69,.04);align-items:center}.hero-title-wrap{display:flex;align-items:flex-start;gap:14px;min-width:0}.page-icon{width:47px;height:47px;flex:0 0 47px;border-radius:9px;background:linear-gradient(145deg,#1874be,#24a6c2);color:#fff;display:grid;place-items:center;font-size:22px;font-family:Consolas,monospace;box-shadow:0 7px 18px rgba(23,111,179,.2)}.eyebrow{color:var(--gd-blue-600);font-size:9px;letter-spacing:1.55px;font-weight:900;margin:1px 0 4px}.hero h2{font-size:24px;line-height:1.16;margin:0 0 6px;color:var(--gd-text);letter-spacing:-.25px}.hero p{font-size:12px;line-height:1.45;max-width:870px;color:var(--gd-text-2)}.hero-actions{gap:7px}.hero-actions button,.savebar button,.v8-toolbar button,.button-row button{min-height:34px;padding:8px 13px;border-radius:6px;font-size:10px;box-shadow:0 1px 2px rgba(10,30,50,.1)}button{border-radius:6px;padding:9px 14px;font-size:11px;background:#526b84}button.primary{background:linear-gradient(180deg,#2184d3,#1468ae)}button.good{background:#168a5d}button.bad{background:#b87617}button.danger{background:#c94646}.cards{grid-template-columns:repeat(4,minmax(160px,1fr));gap:11px;margin:12px 0}.card{position:relative;overflow:hidden;border-radius:8px;padding:14px 15px;border:1px solid var(--gd-border);background:var(--gd-surface);box-shadow:0 2px 8px rgba(20,43,69,.035)}.card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(#2085d1,#25adc4)}.card small{font-size:9px;font-weight:700;letter-spacing:.65px;text-transform:uppercase;color:var(--gd-text-3)}.card strong{font-size:21px;color:var(--gd-text);line-height:1.3}.content-stage{min-height:200px}.panel{border-radius:8px;padding:16px 17px;margin:12px 0;border:1px solid var(--gd-border);background:var(--gd-surface);box-shadow:0 2px 9px rgba(20,43,69,.035)}.panel h3{font-size:16px;margin:0 0 12px;padding-bottom:9px;border-bottom:1px solid var(--gd-border);color:var(--gd-text)}.section-title{font-size:13px;margin:16px 0 9px;color:var(--gd-blue-700);letter-spacing:.1px}.grid{grid-template-columns:repeat(4,minmax(170px,1fr));gap:10px}.field{gap:4px}.field label{font-size:10px;color:var(--gd-text-2);font-weight:700}.field span,.field small{font-size:9px;color:var(--gd-text-3)}.field input,.field select,.field textarea{min-height:35px;padding:7px 9px;border-radius:5px;border-color:var(--gd-border-strong);background:var(--gd-surface);color:var(--gd-text);font-size:11px;transition:border .15s,box-shadow .15s}.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--gd-blue-500);box-shadow:0 0 0 3px rgba(36,136,220,.12)}.table-scroll{border:1px solid var(--gd-border);border-radius:7px}.table{font-size:10px;background:var(--gd-surface);color:var(--gd-text)}.table th,.table td{padding:7px 8px;border-color:var(--gd-border);vertical-align:middle}.table th{position:sticky;top:0;z-index:1;background:var(--gd-surface-3);color:var(--gd-text-2);font-size:9px;letter-spacing:.25px;text-transform:uppercase}.table tr:hover td{background:rgba(35,131,205,.045)}.tabs{gap:3px;margin:10px 0;border-bottom:1px solid var(--gd-border);padding:0 2px}.tab{border:0;border-bottom:2px solid transparent;border-radius:5px 5px 0 0;background:transparent;color:var(--gd-text-2);padding:8px 11px;font-size:10px}.tab:hover{background:var(--gd-surface-2);color:var(--gd-text)}.tab.active{background:rgba(31,126,199,.08);color:var(--gd-blue-600);border-bottom-color:var(--gd-blue-600)}.chartbox{border-radius:8px;border-color:var(--gd-border);background:var(--gd-surface)}canvas{background:var(--gd-surface)}.note{font-size:11px;color:var(--gd-text-2)}.mono{font-size:10px;background:var(--gd-surface-2);border-color:var(--gd-border);color:var(--gd-text)}.pill{font-size:9px;background:rgba(29,125,198,.1);color:var(--gd-blue-600)}.freq-details{border-radius:7px;background:var(--gd-surface);border-color:var(--gd-border)}.freq-details summary{font-size:12px;padding:11px 13px;background:var(--gd-surface-2);color:var(--gd-text)}.sticky-actions{top:-16px;border:1px solid var(--gd-border);background:color-mix(in srgb,var(--gd-canvas) 93%,transparent);border-radius:7px}.statusbar{height:var(--gd-status-h);display:flex;align-items:center;justify-content:space-between;padding:0 12px;background:var(--gd-navy-900);color:#91abc2;font-size:9px;z-index:25}.statusbar>div{display:flex;align-items:center;gap:9px}.statusbar strong{color:#d6e8f7;font-size:9px}.status-led{width:6px;height:6px;border-radius:50%;background:#2dcb85}.statusbar-center{gap:18px!important}.command-palette{position:fixed;inset:0;display:none;align-items:flex-start;justify-content:center;padding-top:11vh;background:rgba(3,12,22,.55);backdrop-filter:blur(3px);z-index:1000}.command-palette.open{display:flex}.command-dialog{width:min(640px,calc(100vw - 30px));border:1px solid var(--gd-border-strong);border-radius:10px;background:var(--gd-surface);box-shadow:0 24px 70px rgba(0,0,0,.3);overflow:hidden}.command-input-row{height:54px;padding:0 15px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--gd-border)}.command-input-row>span{font-size:23px;color:var(--gd-blue-600)}.command-input-row input{flex:1;border:0;outline:0;background:transparent;color:var(--gd-text);font-size:14px}.command-input-row kbd,.command-result kbd{border:1px solid var(--gd-border);border-radius:4px;background:var(--gd-surface-2);color:var(--gd-text-3);padding:3px 6px;font-size:9px}.command-results{max-height:410px;overflow:auto;padding:7px}.command-result{width:100%;height:51px;padding:6px 10px;background:transparent;color:var(--gd-text);display:flex;align-items:center;gap:11px;text-align:left}.command-result:hover,.command-result.selected{background:var(--gd-surface-3)}.command-result-icon{width:31px;height:31px;border-radius:7px;display:grid;place-items:center;background:rgba(32,131,204,.1);color:var(--gd-blue-600);font-weight:800}.command-result>span:nth-child(2){display:flex;flex:1;flex-direction:column}.command-result strong{font-size:11px}.command-result small{font-size:9px;color:var(--gd-text-3);margin-top:2px}.command-footer{height:31px;border-top:1px solid var(--gd-border);display:flex;align-items:center;gap:17px;padding:0 13px;color:var(--gd-text-3);font-size:8px}.command-empty{padding:30px;text-align:center;color:var(--gd-text-3)}.mobile-overlay{display:none}
.sidebar-collapsed .sidebar{width:var(--gd-sidebar-collapsed);flex-basis:var(--gd-sidebar-collapsed)}.sidebar-collapsed .brand-copy,.sidebar-collapsed .project-context-copy,.sidebar-collapsed .nav-search,.sidebar-collapsed .nav-search-wrap kbd,.sidebar-collapsed .nav-group-title span:nth-child(2),.sidebar-collapsed .nav-group-title b,.sidebar-collapsed .nav-label,.sidebar-collapsed .nav-state,.sidebar-collapsed .license-card strong,.sidebar-collapsed .license-card small{display:none}.sidebar-collapsed .brand-area{padding:0 15px}.sidebar-collapsed .sidebar-collapse{position:absolute;right:-1px;bottom:4px;transform:rotate(180deg)}.sidebar-collapsed .project-context{justify-content:center;margin-left:12px;margin-right:12px;padding:9px 5px}.sidebar-collapsed .nav-search-wrap{justify-content:center;padding:0;margin-left:12px;margin-right:12px}.sidebar-collapsed .nav-group-title{justify-content:center}.sidebar-collapsed .nav{justify-content:center;padding:7px}.sidebar-collapsed .nav.active:after{display:none}.sidebar-collapsed .sidebar-footer{text-align:center}.sidebar-collapsed .license-card span{font-size:7px}
html[data-theme="dark"] .hero{background:linear-gradient(135deg,#111f30,#14263a)}html[data-theme="dark"] .field input,html[data-theme="dark"] .field select,html[data-theme="dark"] .field textarea{color-scheme:dark}html[data-theme="dark"] canvas{filter:brightness(.9) contrast(.95)}
@media(max-width:1200px){.topbar-center{display:none}.grid{grid-template-columns:repeat(3,minmax(160px,1fr))}.cards{grid-template-columns:repeat(2,minmax(160px,1fr))}.user-menu div:nth-child(2){display:none}}
@media(max-width:860px){body{overflow:auto}.app-shell{min-height:100vh;height:auto}.workspace{height:auto;min-height:100vh;grid-template-rows:var(--gd-topbar-h) auto minmax(calc(100vh - 86px),auto) var(--gd-status-h)}.sidebar{position:fixed;left:0;top:0;bottom:0;width:min(310px,88vw)!important;transform:translateX(-105%);transition:transform .22s;z-index:100}.mobile-nav-open .sidebar{transform:none}.mobile-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:90}.mobile-nav-open .mobile-overlay{display:block}.mobile-menu{display:grid!important}.sidebar-collapse{display:none!important}.topbar{padding:0 10px}.topbar-left{min-width:0}.breadcrumbs span:first-child,.breadcrumbs b:first-of-type{display:none}.ribbon{overflow-x:auto;padding-left:8px}.study-health{display:none}.main{overflow:visible;padding:10px}.hero{flex-direction:column;align-items:flex-start}.hero-actions{justify-content:flex-start}.grid,.cards,.canvas-grid,.freq-grid,.freq-charts,.v8-chart-grid{grid-template-columns:1fr!important}.statusbar-center{display:none!important}.user-menu>span{display:none}}
@media print{body{overflow:visible}.app-shell,.workspace{display:block;height:auto}.topbar,.ribbon,.statusbar,.sidebar{display:none!important}.main{overflow:visible;padding:0}.hero{box-shadow:none}.content-stage{display:block}}


/* Load Flow & Network Analysis */
.lf-shell{display:block}.lf-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:14px}.lf-header h2{margin:5px 0 0}.lf-badge{font-size:11px;font-weight:800;letter-spacing:.11em;color:var(--accent,#1769c2)}.lf-actions,.lf-toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:10px 0}.lf-actions button,.lf-toolbar button,.lf-toolbar .button{border:1px solid #b8c8da;background:#fff;border-radius:7px;padding:8px 12px;font-weight:650;cursor:pointer}.lf-actions button.primary{background:#1769c2;color:#fff;border-color:#1769c2}.lf-kpis{display:grid;grid-template-columns:repeat(6,minmax(120px,1fr));gap:10px;margin:12px 0}.lf-kpis>div{background:var(--panel,#fff);border:1px solid var(--border,#d6e1ec);border-radius:9px;padding:13px}.lf-kpis span{display:block;font-size:11px;text-transform:uppercase;color:#63758a}.lf-kpis b{display:block;margin-top:5px;font-size:19px}.lf-tabs{overflow-x:auto;display:flex;flex-wrap:nowrap}.lf-table-wrap{overflow:auto;max-height:64vh;border:1px solid #d7e1ec;border-radius:8px}.lf-table{min-width:920px;margin:0}.lf-table thead th{position:sticky;top:0;background:#eef4fa;z-index:1}.lf-table.editable input{min-width:78px;width:100%;border:1px solid transparent;background:transparent;padding:5px}.lf-table.editable input:focus{border-color:#1769c2;background:#fff}.mini{padding:3px 8px!important}.danger{color:#b42318!important}.lf-running{color:#1769c2;font-weight:700}.lf-header+ .tabs{margin-bottom:14px}@media(max-width:900px){.lf-kpis{grid-template-columns:repeat(2,1fr)}.lf-header{align-items:flex-start;flex-direction:column}}
/* Load Flow v3 page-wise workspace */
.lf-page-nav{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:14px;padding:10px;background:#eaf1f8;border:1px solid #cbd9e8;border-radius:12px}.lf-page-nav button{background:#355d84;color:#fff;border:0;padding:10px 14px;border-radius:8px;font-weight:700}.lf-page-nav button.active{background:#0877c9}.lf-status{min-height:24px;margin:4px 0 10px}.lf-hero{display:grid;grid-template-columns:1.3fr 1fr;gap:28px;align-items:center}.lf-flow{padding:35px;border-radius:16px;background:linear-gradient(135deg,#0d4e7f,#0d88b9);color:white;font-size:22px;font-weight:800;text-align:center}.lf-case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.lf-case{padding:20px;text-align:left;border:1px solid #c9d8e7;background:white;border-radius:12px;box-shadow:0 5px 18px #183a5c12}.lf-case strong,.lf-case span{display:block}.lf-case span{font-size:12px;color:#60748a;margin-top:7px}.lf-table-wrap{overflow:auto;max-height:620px;border:1px solid #d5e0ec;border-radius:8px;margin-bottom:20px}.lf-diagram{overflow:auto;height:680px;background:#fbfdff;border:1px solid #cbd9e8;border-radius:10px}.lf-diagram svg{min-width:100%;height:auto}.lf-line{stroke:#8094a9;stroke-width:1.5}.lf-line.transformer{stroke:#9a5d19;stroke-width:2.5}.lf-node circle{fill:#0c6fb2;stroke:white;stroke-width:1}.lf-busbar{stroke:#12263a;stroke-width:4}.lf-node text{font:10px Segoe UI;fill:#172b3f}.lf-gen{fill:#1d9b57!important}.lf-load{fill:#d98519;stroke:#fff}.lf-symbol{fill:#fff!important;font-weight:bold}.lf-diagram-tools{display:flex;gap:8px;align-items:center;margin-bottom:10px}.lf-chart{width:100%;height:260px}.button{display:inline-block;text-decoration:none}.lf-status .pass,.lf-status .fail{display:inline-block;padding:6px 10px;border-radius:7px;background:#fff}.lf-status .pass{color:#087a3e}.lf-status .fail{color:#b42318}@media(max-width:850px){.lf-hero{grid-template-columns:1fr}.lf-page-nav{position:sticky;top:0;z-index:5}.lf-diagram{height:500px}}