*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --mono:'IBM Plex Mono',monospace;
  --sans:'IBM Plex Sans',sans-serif;
}
[data-theme="light"]{
  --bg:#f8fafc;
  --surface:#ffffff;
  --surface2:#f1f5f9;
  --surface3:#f7f8f9;
  --border:#e2e8f0;
  --border-light:#e4e7eb;
  --text:#0f172a;
  --text-mid:#334155;
  --text-dim:#64748b;
  --text-faint:#94a3b8;
  --green:#16a34a;
  --green-mid:#22c55e;
  --green-light:#f0fdf4;
  --green-border:#bbf7d0;
  --red:#dc2626;
  --red-light:#fef2f2;
  --red-border:#fca5a5;
  --amber:#d97706;
  --amber-light:#fffbeb;
  --amber-border:#fcd34d;
  --blue:#2563eb;
  --blue-light:#eff6ff;
  --blue-border:#bfdbfe;
  --navy:#0f172a;
  --navy-mid:#1e293b;
}
[data-theme="dark"]{
  --bg:#0a0e17;
  --surface:#111827;
  --surface2:#1a2332;
  --surface3:#1a2332;
  --border:#1e293b;
  --border-light:#1e293b;
  --text:#e5e7eb;
  --text-mid:#9ca3af;
  --text-dim:#6b7280;
  --text-faint:#4b5563;
  --green:#22c55e;
  --green-mid:#22c55e;
  --green-light:rgba(34,197,94,0.08);
  --green-border:rgba(34,197,94,0.25);
  --red:#ef4444;
  --red-light:rgba(239,68,68,0.1);
  --red-border:rgba(239,68,68,0.25);
  --amber:#f59e0b;
  --amber-light:rgba(245,158,11,0.1);
  --amber-border:rgba(245,158,11,0.25);
  --blue:#3b82f6;
  --blue-light:rgba(59,130,246,0.1);
  --blue-border:rgba(59,130,246,0.25);
  --navy:#e5e7eb;
  --navy-mid:#1e293b;
}
body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;position:relative;transition:background .2s,color .2s}
body::after{content:'';position:fixed;inset:0;background-image:url('./assets/Topography_Grid_-_Black__Converted_.png');background-size:800px auto;background-repeat:repeat;opacity:0.12;pointer-events:none;z-index:0}
[data-theme="dark"] body::after{opacity:0.16}

.page-wrap{max-width:1400px;margin:0 auto;position:relative;z-index:1}

.hdr{
  position:relative;
  background:var(--bg);
  background-image:url('./assets/Topographyc_Texture-01.png');
  background-size:cover;
  background-position:center;
  position:relative;z-index:100;
  border-bottom:1px solid var(--border);
}
.hdr::before{
  content:'';position:absolute;inset:0;
  background:rgba(248,250,252,0.84);
  z-index:0;
  pointer-events:none;
}
[data-theme="dark"] .hdr::before{
  background:rgba(10,14,23,0.82);
}
.hdr-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;
  padding:1rem 1.5rem;max-width:1400px;margin:0 auto;
}
.hdr-left{display:flex;align-items:center;gap:1rem}
.hdr-right{display:flex;align-items:center;gap:0.75rem}
.hdr-logo{display:flex;align-items:center;height:36px}
.hdr-logo img{height:36px;width:auto}
[data-theme="dark"] .logo--light{display:none}
[data-theme="dark"] .logo--dark{display:block}
[data-theme="light"] .logo--dark{display:none}
[data-theme="light"] .logo--light{display:block}
.hdr-title{font-family:var(--mono);font-size:0.875rem;color:var(--text-mid);text-transform:uppercase;letter-spacing:0.05em;font-weight:600}
.theme-toggle{
  background:none;border:1px solid var(--border);color:var(--text-mid);
  width:36px;height:36px;border-radius:6px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:1.125rem;
  transition:background .2s,color .2s;
}
.theme-toggle:hover{background:var(--surface);color:var(--text)}

.hero{padding:40px 40px 0;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:start}
.hero-main h1{font-size:36px;font-weight:700;line-height:1.1;letter-spacing:-1px;color:var(--navy);margin-bottom:10px}
.hero-main h1 em{font-style:normal;color:var(--green)}
.hero-sub{font-size:15px;color:var(--text-dim);max-width:640px;line-height:1.6;margin-bottom:0}
.hero-eyebrow{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--green);text-transform:uppercase;letter-spacing:2px;margin-bottom:10px}

.kpi-strip{margin:24px 40px 0;display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--border);border-radius:4px;overflow:hidden}
.kpi{background:var(--surface);padding:18px 20px;border-right:1px solid var(--border)}
.kpi:last-child{border-right:none}
.kpi-val{font-family:var(--mono);font-size:26px;font-weight:700;line-height:1;margin-bottom:4px}
.kpi-label{font-size:11px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px}
.kpi-sub{font-family:var(--mono);font-size:10px;color:var(--text-faint);margin-top:2px}
.kpi-green .kpi-val{color:var(--green)}
.kpi-red .kpi-val{color:var(--red)}
.kpi-amber .kpi-val{color:var(--amber)}

.tabs-nav{margin:28px 40px 0;display:flex;gap:0;border-bottom:2px solid var(--border)}
.tab-btn{padding:12px 22px;font-size:12px;font-weight:600;color:var(--text-dim);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color .15s,border-color .15s;text-transform:uppercase;letter-spacing:.8px;font-family:var(--mono);background:none;border-top:none;border-left:none;border-right:none;user-select:none}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--green);border-bottom-color:var(--green)}
.tab-panel{display:none;padding:28px 40px 48px}
.tab-panel.active{display:block}

.section-hed{font-size:11px;font-family:var(--mono);font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-faint);margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border)}

.comp-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:4px}
.comp-tbl{width:100%;border-collapse:collapse;font-size:12px;table-layout:fixed}
.comp-tbl thead tr{background:#0f172a}
[data-theme="dark"] .comp-tbl thead tr{background:#1e293b}
.comp-tbl th{padding:10px 10px;text-align:left;font-family:var(--mono);font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:rgba(255,255,255,.6);font-weight:500}
.comp-tbl th:first-child{color:#fff;font-weight:700}
.comp-tbl td{padding:10px 10px;border-bottom:1px solid var(--border-light);vertical-align:middle;font-size:12px}
.comp-tbl tbody tr:last-child td{border-bottom:none}
.comp-tbl tbody tr:hover td{background:var(--surface3)}
.comp-tbl .bf-row td{background:var(--green-light)}
.comp-tbl .bf-row:hover td{background:#d4eddf}
.comp-tbl .bf-row td:first-child{border-left:3px solid var(--green-mid)}
.sys-name{font-weight:600;white-space:nowrap;font-size:13px}
.sys-type{font-family:var(--mono);font-size:10px;color:var(--text-dim);font-weight:400;display:block;margin-top:1px}
.cost-cell{font-family:var(--mono);font-weight:700}
.yes{color:var(--green);font-weight:700}
.no{color:var(--red);font-weight:700}
.partial{color:var(--amber);font-weight:600}
.badge{display:inline-block;padding:2px 7px;border-radius:2px;font-family:var(--mono);font-size:10px;font-weight:600}
.bg{background:var(--green-light);color:var(--green);border:1px solid var(--green-border)}
.br{background:var(--red-light);color:var(--red);border:1px solid var(--red-border)}
.ba{background:var(--amber-light);color:var(--amber);border:1px solid var(--amber-border)}
.bb{background:var(--blue-light);color:var(--blue);border:1px solid var(--blue-border)}

.retro-selector{display:flex;gap:0;margin-bottom:16px}
.retro-sel-btn{padding:10px 20px;font-family:var(--mono);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;border:1px solid var(--border);background:var(--surface);color:var(--text-dim);cursor:pointer;transition:all .15s}
.retro-sel-btn:first-child{border-radius:4px 0 0 4px}
.retro-sel-btn:last-child{border-radius:0 4px 4px 0}
.retro-sel-btn:not(:first-child){border-left:none}
.retro-sel-btn:hover{background:var(--surface2);color:var(--text)}
.retro-sel-btn.active{background:#0f172a;color:#fff;border-color:#0f172a}
[data-theme="dark"] .retro-sel-btn.active{background:var(--green-mid);color:#0a0e17;border-color:var(--green-mid)}
.retro-scenario{display:none}
.retro-scenario.active{display:block}
.retro-detail{background:var(--surface);border:1px solid var(--border);border-radius:4px;overflow:hidden}
.retro-detail-header{background:#1e293b;color:#fff;padding:18px 24px;display:flex;justify-content:space-between;align-items:flex-start}
.rdh-left h2{font-size:18px;font-weight:700;margin-bottom:4px}
.rdh-left p{font-size:12px;color:rgba(255,255,255,.5);font-family:var(--mono)}
.rdh-right{text-align:right}
.rdh-right .loss{font-family:var(--mono);font-size:28px;font-weight:700;color:#f87171}
.rdh-right .loss-label{font-size:10px;color:rgba(255,255,255,.4);text-transform:uppercase;letter-spacing:.5px}
.retro-body{display:grid;grid-template-columns:1fr 1px 1fr;gap:0}
.retro-col{padding:24px}
.retro-col-div{background:var(--border)}
.retro-col-title{font-family:var(--mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.retro-col-title.red{color:var(--red);border-color:var(--red-border)}
.retro-col-title.green{color:var(--green);border-color:var(--green-border)}
.retro-stat-row{display:flex;justify-content:space-between;align-items:baseline;padding:8px 0;border-bottom:1px solid var(--border-light)}
.retro-stat-row:last-child{border:none}
.rsr-label{font-size:12px;color:var(--text-mid)}
.rsr-val{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--text)}
.rsr-val.red{color:var(--red)}
.rsr-val.green{color:var(--green)}
.rsr-val.big{font-size:20px}
.roi-box{margin-top:16px;padding:16px;background:var(--green-light);border:1px solid var(--green-border);border-radius:3px;text-align:center}
.roi-box .roi-num{font-family:var(--mono);font-size:36px;font-weight:700;color:var(--green);display:block;margin-bottom:2px}
.roi-box .roi-label{font-size:11px;color:var(--green);text-transform:uppercase;letter-spacing:1px}
.retro-note{padding:14px 24px;background:var(--surface3);border-top:1px solid var(--border);font-size:12px;color:var(--text-dim);font-style:italic}

.sim-wrap{background:var(--surface);border:1px solid var(--border);border-radius:4px;overflow:hidden}
.sim-presets{padding:14px 20px;background:var(--surface3);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}
.sim-presets-label{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);margin-right:4px}
.preset-btn{padding:6px 14px;font-size:11px;font-family:var(--mono);font-weight:600;border:1px solid var(--border);background:var(--surface);border-radius:3px;cursor:pointer;color:var(--text-mid);transition:all .12s;text-transform:uppercase;letter-spacing:.5px}
.preset-btn:hover{background:var(--surface2);border-color:var(--text-dim)}
.preset-btn.active{background:#0f172a;color:#fff;border-color:#0f172a}
[data-theme="dark"] .preset-btn.active{background:var(--green-mid);color:#0a0e17;border-color:var(--green-mid)}
.sim-body{display:grid;grid-template-columns:260px 1fr;gap:0}
.sim-controls{padding:24px;border-right:1px solid var(--border);display:flex;flex-direction:column;gap:18px}
.sim-ctrl label{font-family:var(--mono);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);display:block;margin-bottom:6px}
.sim-ctrl .ctrl-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.sim-ctrl .ctrl-val{font-family:var(--mono);font-size:18px;font-weight:700;color:var(--text)}
.sim-ctrl .ctrl-unit{font-size:10px;color:var(--text-faint)}
input[type="range"]{-webkit-appearance:none;appearance:none;width:100%;height:5px;background:var(--surface2);border-radius:3px;outline:none;border:1px solid var(--border)}
input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;background:var(--text-dim);border-radius:50%;cursor:pointer;border:2px solid var(--bg);box-shadow:0 1px 3px rgba(0,0,0,.2)}
input[type="range"]::-moz-range-thumb{width:16px;height:16px;background:var(--text-dim);border-radius:50%;cursor:pointer;border:2px solid var(--bg)}
.sim-ctrl .ctrl-cost{font-size:10px;color:var(--text-faint);font-family:var(--mono)}
.sim-results{padding:24px;display:flex;flex-direction:column;gap:16px}
.sim-bars-title{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text-faint);margin-bottom:8px}
.sys-bar-row{margin-bottom:12px}
.sbr-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:5px}
.sbr-name{font-size:12px;font-weight:600;color:var(--text-mid)}
.sbr-kills{font-family:var(--mono);font-size:13px;font-weight:700}
.sbr-track{height:24px;background:var(--surface2);border-radius:3px;overflow:hidden;border:1px solid var(--border);position:relative}
.sbr-fill{height:100%;border-radius:3px;transition:width .4s ease;position:relative}
.sbr-fill-label{position:absolute;right:8px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:10px;font-weight:700;color:rgba(255,255,255,.9)}
.sbr-depleted{font-family:var(--mono);font-size:10px;color:var(--red);margin-top:3px;font-weight:600}
.sbr-intact{font-family:var(--mono);font-size:10px;color:var(--green);margin-top:3px;font-weight:600}
.sim-bottom{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}
.sim-bottom-card{padding:16px;border-radius:3px;border:1px solid var(--border)}
.sbc-label{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);margin-bottom:6px}
.sbc-val{font-family:var(--mono);font-size:24px;font-weight:700}
.sbc-sub{font-size:11px;color:var(--text-dim);margin-top:3px}
.mag-depth-wrap{margin-top:12px}
.mag-day-label{font-family:var(--mono);font-size:10px;color:var(--text-faint);margin-bottom:6px}
.mag-bars{display:flex;gap:3px;align-items:flex-end;height:60px}
.mag-bar{flex:1;border-radius:2px 2px 0 0;transition:height .3s ease;min-width:3px;position:relative}
.mag-bar-tooltip{position:absolute;bottom:calc(100% + 4px);left:50%;transform:translateX(-50%);background:#1e293b;color:#fff;font-family:var(--mono);font-size:9px;padding:2px 5px;border-radius:2px;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .15s}
.mag-bar:hover .mag-bar-tooltip{opacity:1}

.cov-wrap{background:var(--surface);border:1px solid var(--border);border-radius:4px;overflow:hidden}
.cov-toolbar{padding:14px 20px;background:var(--surface3);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cov-control{display:flex;align-items:center;gap:8px}
.cov-control label{font-family:var(--mono);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);white-space:nowrap}
.cov-control select,.cov-control input[type="range"]{font-family:var(--mono);font-size:12px;padding:5px 8px;border:1px solid var(--border);background:var(--surface);border-radius:3px;color:var(--text);outline:none}
.cov-control select{cursor:pointer;min-width:160px}
.cov-control .val-display{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--text);min-width:50px}
.cov-body{display:grid;grid-template-columns:1fr 200px}
#covCanvas{display:block;width:100%;height:480px;cursor:default}
.cov-sidebar{border-left:1px solid var(--border);padding:20px;display:flex;flex-direction:column;gap:16px;background:var(--surface3)}
.cov-kpi{padding-bottom:14px;border-bottom:1px solid var(--border)}
.cov-kpi:last-child{border:none;padding-bottom:0}
.cov-kpi-val{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--text);margin-bottom:2px}
.cov-kpi-val.green{color:var(--green)}
.cov-kpi-label{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-faint)}
.cov-hint{font-size:11px;color:var(--text-dim);line-height:1.5;background:var(--blue-light);border:1px solid var(--blue-border);border-radius:3px;padding:10px 12px}

.footer{padding:32px 40px;background:var(--surface);border-top:1px solid var(--border);text-align:center}
.footer-row{display:flex;justify-content:center;align-items:center;gap:12px;margin-bottom:8px}
.footer-row img{height:28px;width:auto;opacity:.7}
.footer-company{font-family:var(--sans);font-size:14px;font-weight:500;color:var(--text-mid)}
.footer-links{font-family:var(--mono);font-size:11px;color:var(--text-faint);margin-bottom:12px}
.footer-links a{color:var(--green-mid);text-decoration:none}
.footer-sources{font-size:11px;color:var(--text-dim);line-height:1.6;max-width:900px;margin:0 auto}


@media(max-width:1024px){
  .hero{grid-template-columns:1fr}
  .kpi-strip{grid-template-columns:repeat(3,1fr)}
  .sim-body{grid-template-columns:1fr}
  .cov-body{grid-template-columns:1fr}
  .cov-sidebar{border-left:none;border-top:1px solid var(--border)}
  .retro-body{grid-template-columns:1fr}
  .retro-col-div{display:none}
}
@media(max-width:700px){
  .hdr,.hero,.kpi-strip,.tabs-nav,.tab-panel,.footer{padding-left:16px;padding-right:16px}
  .hero h1{font-size:26px}
  .kpi-strip{grid-template-columns:1fr 1fr}
}