:root { --ink: #142b3d; --muted: #607583; --navy: #0d2537; --line: #dce4e9; --teal: #007d78; --mint: #46e0c3; --orange: #c67829; --paper: #fff; --surface: #f3f6f8; --sans: Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; --mono: "SFMono-Regular",Consolas,monospace; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0px; background: var(--surface); color: var(--ink); font: 16px/1.6 var(--sans); }
button, input, select { font: inherit; }
button, a, input, select, summary { touch-action: manipulation; }
button { cursor: pointer; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, canvas:focus-visible, summary:focus-visible { outline: rgb(22, 166, 155) solid 3px; outline-offset: 4px; }
button:disabled { opacity: 0.4; cursor: default; }
h1, h2, h3, p { margin-top: 0px; }
h1 { font-size: clamp(1.65rem, 2.7vw, 2.35rem); line-height: 1.2; letter-spacing: -0.04em; margin: 6px 0px 0px; }
h2 { font-size: 1.55rem; line-height: 1.3; letter-spacing: -0.025em; margin: 7px 0px 0px; }
h3 { font-size: 1.1rem; line-height: 1.4; margin-bottom: 10px; }
p { margin-bottom: 14px; }
.sidebar { position: fixed; inset: 0px auto 0px 0px; width: 244px; background: var(--navy); color: rgb(255, 255, 255); display: flex; flex-direction: column; padding: 30px 20px; z-index: 10; }
.brand { display: flex; gap: 12px; align-items: center; font-size: 1.55rem; line-height: 1.2; font-weight: 700; margin-bottom: 44px; }
.brand svg { width: 44px; fill: none; stroke: var(--mint); stroke-width: 2; flex-shrink: 0; }
.brand span { display: block; font-size: 0.625rem; color: rgb(149, 184, 201); letter-spacing: 0.16em; margin-top: 7px; }
nav { display: grid; gap: 7px; }
nav a { color: rgb(179, 198, 210); padding: 13px 12px; border-radius: 6px; display: flex; align-items: center; gap: 14px; font-size: 0.9rem; line-height: 1.4; }
nav a span { font: 12px var(--mono); color: rgb(130, 155, 171); }
nav a:hover { background: rgb(22, 54, 72); color: white; text-decoration: none; }
nav a.active { color: rgb(255, 255, 255); background: rgb(25, 62, 77); box-shadow: inset 3px 0 var(--mint); }
nav a.active span { color: var(--mint); }
.sidebar-foot { margin-top: auto; padding: 24px 10px 0px; font-size: 0.875rem; line-height: 1.5; }
.sidebar-foot p { margin-bottom: 12px; }
.sidebar-foot a { color: var(--mint); }
.smallcap, .eyebrow { font-size: 0.75rem; font-weight: 650; letter-spacing: 0.09em; color: var(--muted); line-height: 1.3; }
.smallcap { color: rgb(136, 165, 182); font-size: 0.65rem; }
.sidebar .muted { color: rgb(130, 155, 171); font-size: 0.75rem; margin: 20px 0px 0px; }
main { margin-left: 244px; padding: 30px 34px 0px; max-width: 1760px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.button { background: white; color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 10px 15px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; line-height: 1.4; font-weight: 600; font-size: 0.875rem; white-space: nowrap; text-decoration: none; }
.button:hover { text-decoration: none; background: rgb(232, 243, 241); }
.button.primary { background: var(--teal); border-color: var(--teal); color: white; }
.button.primary:hover { background: rgb(0, 107, 101); }
.pdf-tag { border: 1px solid rgb(92, 170, 163); padding: 1px 5px; border-radius: 3px; font: 11px var(--mono); }
.status-strip { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 20px; background: rgb(255, 248, 237); border-top: 1px solid rgb(239, 218, 182); border-right: 1px solid rgb(239, 218, 182); border-bottom: 1px solid rgb(239, 218, 182); border-image: none; border-left: 4px solid var(--orange); padding: 14px 20px; font-size: 0.875rem; }
.status-strip strong { color: rgb(134, 85, 21); }
.status-strip span { color: rgb(117, 94, 66); }
.status-strip a { margin-left: auto; color: rgb(109, 76, 33); font-weight: 600; }
.load-status { font-size: 0.875rem; color: var(--muted); padding: 6px 0px; margin-bottom: 0px; min-height: 30px; }
.section-title { display: flex; gap: 24px; align-items: center; justify-content: space-between; margin: 22px 0px; }
.section-title > p { color: var(--muted); font-size: 0.875rem; line-height: 1.5; margin: 0px; }
.section-title.compact { margin-top: 34px; }
.view { animation: 0.18s ease-out 0s 1 normal none running reveal; }
.view[hidden] { display: none; }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.board-layout { display: grid; grid-template-columns: minmax(0px, 1fr) 250px; gap: 22px; }
.board-tools { display: flex; gap: 14px; align-items: flex-end; padding: 16px; }
.board-tools label { font-size: 0.75rem; color: var(--muted); font-weight: 600; }
.board-tools input, .board-tools select { display: block; margin-top: 5px; width: 100%; }
.net-picker { flex: 1 1 0%; min-width: 80px; }
input:not([type="range"]), select { color: var(--ink); border: 1px solid rgb(206, 218, 226); border-radius: 5px; padding: 8px 10px; min-height: 40px; background: white; max-width: 100%; font-size: 0.875rem; }
.board-stage { height: 520px; background: linear-gradient(rgba(36, 67, 86, 0.2) 1px, transparent 1px) 0% 0% / 24px 24px, linear-gradient(90deg, rgba(36, 67, 86, 0.2) 1px, transparent 1px) rgb(8, 28, 42); position: relative; overflow: hidden; }
#board-canvas { width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; }
#board-canvas:active { cursor: grabbing; }
.board-stamp { position: absolute; left: 18px; top: 18px; pointer-events: none; color: rgb(226, 237, 244); line-height: 1.5; }
.board-stamp span { display: block; font-size: 0.6rem; letter-spacing: 0.09em; color: rgb(131, 168, 186); }
.board-stamp b { font: 14px var(--mono); }
.zoom-tools { position: absolute; right: 16px; bottom: 16px; display: flex; border: 1px solid rgb(52, 84, 105); background: rgb(18, 48, 71); color: rgb(219, 233, 238); border-radius: 5px; overflow: hidden; }
.zoom-tools button { border: 0px; color: rgb(225, 249, 241); background: transparent; width: 35px; height: 35px; font-size: 21px; }
.zoom-tools button:hover { background: rgb(33, 81, 103); }
.zoom-tools output { font: 12px var(--mono); align-self: center; min-width: 55px; text-align: center; }
.board-caption { padding: 12px 16px; display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; font-size: 0.75rem; color: var(--muted); line-height: 1.45; }
.board-caption span:first-child { color: var(--ink); font-weight: 600; }
.big-fact { padding: 17px 0px 22px; border-bottom: 1px solid var(--line); margin-bottom: 15px; }
.big-fact > strong { font-style: ; font-variant-ligatures: ; font-variant-caps: ; font-variant-numeric: ; font-variant-east-asian: ; font-variant-alternates: ; font-variant-position: ; font-variant-emoji: ; font-stretch: ; font-size: ; line-height: ; font-family: ; font-optical-sizing: ; font-size-adjust: ; font-kerning: ; font-feature-settings: ; font-variation-settings: ; font-language-override: ; letter-spacing: -0.05em; display: block; margin: 4px 0px; color: var(--teal); font-weight: 600; }
.big-fact > strong > span { display: block; letter-spacing: 0px; font-size: 1rem; color: var(--ink); font-weight: 500; }
.big-fact p { font-size: 0.875rem; color: var(--muted); margin: 12px 0px 0px; line-height: 1.5; }
.facts { margin: 0px 0px 24px; }
.facts > div { display: flex; justify-content: space-between; gap: 18px; padding: 10px 0px; border-bottom: 1px solid var(--line); font-size: 0.875rem; line-height: 1.5; }
.facts dt { color: var(--muted); }
.facts dd { font-weight: 600; text-align: right; margin: 0px; }
.note { background: rgb(232, 241, 241); border-radius: 7px; padding: 20px; }
.note h3 { color: rgb(35, 82, 85); }
.note p { font-size: 0.875rem; line-height: 1.65; margin-bottom: 0px; }
.note p + p { margin-top: 12px; }
.note.large { padding: 25px; }
.note.large p { font-size: 1rem; }
.note.caution { background: rgb(252, 242, 228); }
.note.caution h3 { color: rgb(134, 85, 21); }
.changes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; }
.change { border-top: 2px solid var(--teal); padding: 18px 0px; }
.change:nth-child(2) { border-color: var(--orange); }
.change-label { font-size: 0.75rem; letter-spacing: 0.06em; color: var(--muted); font-weight: 700; }
.change h3 { font: 600 1.7rem/1.4 var(--mono); letter-spacing: -0.035em; margin: 10px 0px; }
.change h3 span { color: var(--muted); font-weight: 400; }
.change p { color: var(--muted); font-size: 0.875rem; }
.change a { font-size: 0.875rem; font-weight: 600; }
.pill { background: rgb(220, 238, 233); color: rgb(22, 98, 89); border-radius: 4px; padding: 6px 11px; font: 12px var(--mono); }
.sim-toolbar { display: flex; justify-content: space-between; gap: 20px; align-items: center; margin-bottom: 20px; }
.segmented { background: rgb(228, 234, 238); border: 1px solid rgb(212, 223, 229); border-radius: 6px; padding: 4px; display: flex; }
.segmented button { border: 0px; background: none; color: rgb(93, 114, 130); border-radius: 4px; padding: 9px 16px; font-size: 0.875rem; font-weight: 600; }
.segmented button.selected { color: rgb(11, 83, 86); background: rgb(255, 255, 255); box-shadow: rgba(20, 43, 61, 0.082) 0px 1px 4px; }
.sim-toolbar label { font-size: 0.875rem; color: var(--muted); display: flex; gap: 10px; align-items: center; }
.chart-panel { padding: 24px; }
.chart-title { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.chart-title h3 { font-size: 1.3rem; margin: 6px 0px 0px; }
.legend { display: flex; flex-wrap: wrap; gap: 15px; font-size: 0.75rem; color: var(--muted); }
.legend span { display: flex; align-items: center; gap: 6px; }
.legend i { width: 20px; border-top: 3px solid var(--orange); }
.legend i.after { border-color: var(--teal); }
.legend i.target { border-color: rgb(128, 144, 155); border-top-style: dashed; }
#sim-chart { width: 100%; height: auto; display: block; }
.freq-control { margin: 15px 0px 20px; }
.freq-control label { display: flex; justify-content: space-between; font-size: 0.875rem; }
.freq-control output { font-weight: 700; font-family: var(--mono); color: var(--teal); }
input[type="range"] { width: 100%; accent-color: var(--teal); height: 30px; cursor: pointer; }
.freq-control > div { display: flex; justify-content: space-between; color: var(--muted); font: 12px var(--mono); }
.readouts { display: grid; grid-template-columns: 1fr 1fr 1.25fr; gap: 22px; border-top: 1px solid var(--line); padding-top: 24px; }
.readouts > div > span { display: block; font-size: 0.65rem; font-weight: 700; color: var(--muted); letter-spacing: 0.06em; }
.readouts strong { font: 600 2rem/1.7 var(--mono); color: var(--orange); display: block; }
.readouts > div:nth-child(2) strong { color: var(--teal); }
.readouts > div:nth-child(3) strong { color: var(--ink); }
.readouts small { display: block; font-size: 0.75rem; color: var(--muted); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin: 22px 0px; }
.run-details { padding: 20px; margin: 22px 0px; }
summary { font-weight: 650; cursor: pointer; }
summary::marker { color: var(--teal); }
.table-wrap { overflow: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.875rem; line-height: 1.5; }
th { text-align: left; background: rgb(241, 245, 247); color: rgb(72, 96, 109); font-size: 0.75rem; font-weight: 600; padding: 12px 14px; }
td { border-bottom: 1px solid var(--line); padding: 13px 14px; vertical-align: top; }
tbody tr:last-child td { border-bottom-width: medium; border-bottom-style: none; border-bottom-color: currentcolor; }
.run-details .table-wrap { margin-top: 20px; }
td.numeric { font: 13px var(--mono); white-space: nowrap; }
.stack-grid { display: grid; grid-template-columns: minmax(0px, 1.2fr) 1fr; gap: 42px; }
.stack-panel { padding: 18px; }
.stack-row { display: flex; width: 100%; gap: 15px; align-items: center; background: white; border: 0px; text-align: left; padding: 7px 10px; border-radius: 5px; color: var(--ink); font-size: 0.875rem; }
.stack-row:hover, .stack-row.selected { background: rgb(233, 244, 241); }
.stack-row .layer-stripe { height: 12px; background: rgb(229, 173, 105); flex: 1 1 0%; min-width: 40px; border: 1px solid rgb(166, 105, 49); border-radius: 2px; }
.stack-row.dielectric .layer-stripe { height: 20px; background: rgb(220, 235, 231); border-color: rgb(192, 216, 208); }
.stack-row.mask .layer-stripe { height: 8px; background: rgb(52, 139, 120); border: 0px; }
.stack-row .layer-name { width: 155px; flex-shrink: 0; }
.stack-row .layer-thickness { width: 100px; text-align: right; font: 12px var(--mono); color: var(--muted); }
.big-fact > strong.layer-fact { font-size: 2rem; margin: 15px 0px; letter-spacing: -0.025em; }
.scope { font-size: 0.875rem; color: var(--muted); line-height: 1.6; }
.stack-grid .scope { margin-top: 20px; }
.validation-summary { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); background: white; border-radius: 8px; padding: 24px; margin-bottom: 22px; }
.validation-summary > div { padding: 0px 24px; border-right: 1px solid var(--line); }
.validation-summary > div:first-child { padding-left: 0px; }
.validation-summary > div:last-child { border: 0px; }
.validation-summary strong { display: block; font: 600 2.5rem/1.5 var(--mono); color: var(--teal); }
.validation-summary > div:last-child strong { color: rgb(166, 100, 24); }
.validation-summary span { font-size: 0.875rem; color: var(--muted); }
.drc-panel, .quality-panel { padding: 24px; margin-top: 22px; }
.drc-panel label { font-size: 0.875rem; display: flex; align-items: center; gap: 10px; }
.drc-panel .scope { margin: 20px 0px 0px; }
.drc-category { font-weight: 600; }
.drc-sub { font-size: 0.75rem; color: var(--muted); max-width: 650px; display: block; margin-top: 7px; }
.quality-panel h3 { margin-bottom: 20px; }
.quality-panel .facts { margin-bottom: 14px; }
.quality-panel .scope { margin: 0px; }
.report-controls { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin: 0px 0px 22px; }
.report-controls label { display: flex; gap: 12px; align-items: center; color: var(--muted); font-size: 0.875rem; }
.report-controls a { margin-left: auto; font-size: 0.875rem; }
.report-paper { background: rgb(220, 228, 233); border-radius: 8px; padding: 25px; }
.report-paper img { display: block; width: 100%; max-width: 930px; height: auto; margin: auto; box-shadow: rgba(33, 58, 80, 0.1) 0px 8px 30px; }
.timeline { border-left: 2px solid rgb(202, 223, 217); margin: 10px 0px 25px 8px; padding-left: 30px; }
.timeline article { position: relative; padding: 5px 0px 25px; max-width: 900px; }
.timeline article::before { content: ""; position: absolute; left: -38px; top: 10px; width: 14px; height: 14px; border-radius: 4px; background: var(--teal); border: 3px solid var(--surface); }
.timeline article > span { font-size: 0.75rem; color: var(--muted); letter-spacing: 0.05em; font-weight: 600; }
.timeline h3 { margin: 8px 0px; }
.timeline p { color: var(--muted); margin: 0px; }
.excerpt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 22px; }
.excerpt-grid a { background: white; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; display: block; }
.excerpt-grid img { display: block; width: 100%; height: auto; }
.excerpt-grid span { font-size: 0.875rem; padding: 14px; display: block; }
.download-list { display: grid; gap: 12px; margin: 22px 0px; }
.download-row { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding: 20px 23px; background: white; border: 1px solid var(--line); border-radius: 7px; color: var(--ink); }
.download-row:hover { background: rgb(237, 246, 243); text-decoration: none; }
.download-row b { display: block; font-size: 1rem; }
.download-row small { display: block; color: var(--muted); font-size: 0.875rem; margin-top: 4px; }
.download-row > span:last-child { font: 12px var(--mono); color: var(--teal); text-align: right; flex-shrink: 0; }
.hash-note { background: rgb(232, 237, 240); border-radius: 7px; padding: 20px; margin: 30px 0px; }
.hash-note code { display: block; font: 12px/1.8 var(--mono); color: rgb(78, 98, 111); overflow-wrap: anywhere; margin-top: 8px; }
footer { border-top: 1px solid var(--line); margin-top: 32px; padding: 24px 0px; color: var(--muted); font-size: 0.75rem; }
.skip { position: absolute; top: -100px; left: 10px; z-index: 100; background: white; padding: 12px; }
.skip:focus { top: 10px; }
.empty { padding: 20px; color: var(--muted); }
@keyframes reveal { 
  0% { opacity: 0.3; transform: translateY(4px); }
  100% { opacity: 1; transform: none; }
}
@media (min-width: 1550px) {
  .board-stage { height: 620px; }
}
@media (max-width: 1170px) {
  .sidebar { width: 210px; padding: 24px 14px; }
  main { margin-left: 210px; padding: 24px; }
  .board-layout { grid-template-columns: minmax(0px, 1fr) 205px; gap: 18px; }
  .board-stage { height: 470px; }
  .board-tools { flex-wrap: wrap; }
  .board-tools .net-picker { min-width: 150px; }
  .board-tools .button { margin-left: auto; }
  .readouts strong { font-size: 1.55rem; }
  .segmented button { padding: 9px 10px; }
  .stack-grid { gap: 22px; }
  .stack-row .layer-name { width: 110px; font-size: 0.75rem; }
  .stack-row .layer-thickness { width: 80px; }
}
@media (max-width: 880px) {
  .sidebar { position: relative; width: 100%; padding: 16px 20px; }
  .brand { font-size: 1.2rem; margin: 0px 0px 16px; }
  .brand svg { width: 32px; }
  .brand span { font-size: 0.6rem; }
  nav { display: flex; overflow: auto; gap: 6px; }
  nav a { flex-shrink: 0; padding: 9px 12px; }
  nav a span { display: none; }
  .sidebar-foot { display: none; }
  main { margin: 0px; padding: 22px; }
  .board-layout { grid-template-columns: 1fr; }
  .board-notes { display: grid; grid-template-columns: 1fr 1.4fr; gap: 22px; }
  .board-notes .note { grid-column: 1 / -1; }
  .big-fact { margin: 0px; padding: 12px 0px; border: 0px; }
  .board-notes .facts { margin: 0px; }
  .board-stage { height: 520px; }
  .status-strip { gap: 8px 16px; }
  .status-strip a { margin: 0px; }
  .stack-grid { grid-template-columns: 1fr 1fr; }
  .sim-toolbar { align-items: flex-start; flex-wrap: wrap; }
  .two-col { gap: 16px; }
  .chart-panel { padding: 18px; }
  .readouts { gap: 15px; }
  .section-title { gap: 16px; }
  .section-title > p { font-size: 0.75rem; }
  .report-paper { padding: 16px; }
}
@media (max-width: 580px) {
  body { font-size: 16px; }
  main { padding: 18px 14px; }
  .topbar { gap: 15px; align-items: flex-start; }
  .topbar .eyebrow { font-size: 0.625rem; }
  .topbar h1 { font-size: 1.6rem; }
  .topbar .button { padding: 9px 10px; font-size: 0.75rem; }
  .pdf-tag { display: none; }
  .status-strip { padding: 12px 14px; gap: 7px; flex-direction: column; align-items: flex-start; }
  .section-title { align-items: flex-start; flex-direction: column; margin-top: 20px; }
  h2 { font-size: 1.3rem; }
  .section-title > p br { display: none; }
  .board-stage { height: 380px; }
  .board-tools { padding: 12px; gap: 10px; }
  .board-tools label { flex: 1 1 0%; }
  .board-tools .net-picker { min-width: 140px; }
  .board-tools .button { padding: 8px 12px; }
  .board-notes { gap: 15px; }
  .big-fact > strong { font-size: 3rem; }
  .facts > div { font-size: 0.75rem; padding: 9px 0px; gap: 10px; }
  .changes-grid, .two-col, .stack-grid { grid-template-columns: 1fr; gap: 16px; }
  .change { padding: 14px 0px; }
  .change h3 { font-size: 1.5rem; }
  .changes-grid { margin-top: 16px; }
  .chart-panel { padding: 14px; }
  .chart-title h3 { font-size: 1.1rem; }
  .segmented { width: 100%; }
  .segmented button { flex: 1 1 0%; padding: 10px 8px; font-size: 0.75rem; }
  .sim-toolbar label { width: 100%; justify-content: space-between; }
  .readouts { grid-template-columns: 1fr 1fr; gap: 12px; padding-top: 16px; }
  .readouts > div:nth-child(3) { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 12px; }
  .readouts strong { font-size: 1.6rem; }
  .note.large { padding: 20px; }
  .note.large p { font-size: 0.875rem; }
  .stack-row .layer-name { width: 130px; font-size: 0.875rem; }
  .stack-row .layer-thickness { width: 90px; }
  .validation-summary { padding: 15px; gap: 12px; }
  .validation-summary > div { padding: 0px; border: 0px; }
  .validation-summary strong { font-size: 1.7rem; }
  .validation-summary span { font-size: 0.75rem; }
  .drc-panel, .quality-panel { padding: 16px; }
  .drc-panel label { flex-direction: column; align-items: flex-start; width: 100%; }
  .drc-panel input { width: 100%; }
  .report-controls { gap: 10px; }
  .report-controls label { order: 3; width: 100%; }
  .report-controls select { flex: 1 1 0%; min-width: 0px; }
  .report-controls a { font-size: 0.75rem; }
  .report-paper { padding: 6px; }
  .excerpt-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 25px; }
  .timeline article::before { left: -33px; }
  .download-row { padding: 16px; }
  .download-row small { font-size: 0.75rem; }
  .hash-note { padding: 16px; }
  .quality-panel .facts > div { font-size: 0.875rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .view { animation: auto ease 0s 1 normal none running none; }
}
[hidden]{display:none!important}