:root{
  --ink:#12213E;
  --ink-soft:#1C325A;
  --ink-muted:rgba(18,33,62,.68);
  --paper:#EDEEE9;
  --paper-2:#E3E4DC;
  --paper-3:#F7F7F3;
  --rule:rgba(18,33,62,.14);
  --rule-strong:rgba(18,33,62,.28);
  --brass:#A47B3D;
  --brass-2:#73551F;
  --brass-soft:#C79A54;
  --warn:#AE4A34;
  --ok:#3B5D48;
  --serif:"Fraunces", Georgia, serif;
  --sans:"IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body.runway-page{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.56;
  -webkit-font-smoothing:antialiased;
}
body.runway-page a{color:inherit}
body.runway-page button,input,select{font:inherit}
body.runway-page button{cursor:pointer}
body.runway-page button:disabled{cursor:not-allowed;opacity:.54}
.runway-shell{min-height:100dvh}
header.site{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(237,238,233,.98);
  border-bottom:1px solid var(--rule);
  box-shadow:0 1px 0 rgba(255,255,255,.34);
}
.navrow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding:16px 28px;
}
.brand-lockup{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.logo-mark{
  width:38px;
  height:38px;
  object-fit:cover;
  border-radius:4px;
  border:1px solid rgba(18,33,62,.12);
  box-shadow:0 8px 22px rgba(18,33,62,.10);
  flex:none;
}
.wordmark{font-family:var(--serif);font-weight:600;font-size:19px;letter-spacing:.01em}
.wordmark span{color:var(--brass-2)}
nav.links{display:flex;gap:22px;font-size:14px;font-weight:500}
nav.links a{color:var(--ink-muted);text-decoration:none}
nav.links a:hover,
nav.links a[aria-current="page"]{color:var(--ink)}
.nav-cta{
  font-family:var(--sans);
  font-weight:600;
  font-size:14px;
  background:var(--ink);
  color:var(--paper);
  padding:9px 14px;
  border-radius:3px;
  text-decoration:none;
  white-space:nowrap;
}
@media (max-width:1120px){nav.links{display:none}}
.runway-hero,
.gate-panel,
.calculator-section,
.results-section,
.method-section{
  width:min(1180px,calc(100% - 48px));
  margin:0 auto;
}
.runway-hero{
  width:100%;
  max-width:none;
  margin:0;
  display:block;
  padding:82px 0 54px;
  background:linear-gradient(180deg,var(--ink) 0%,var(--ink-soft) 100%);
  color:var(--paper);
  border-bottom:0;
}
.runway-hero-inner{
  width:min(1180px,calc(100% - 48px));
  margin:0 auto;
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(280px,.52fr);
  gap:34px;
  align-items:end;
}
.eyebrow{
  margin:0 0 14px;
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brass-2);
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--brass)}
h1,h2,h3{color:var(--ink)}
h1{
  margin:0 0 18px;
  max-width:850px;
  font-family:var(--serif);
  font-size:clamp(46px,6vw,82px);
  font-weight:500;
  line-height:1;
  letter-spacing:-.018em;
}
.runway-hero h1{color:var(--paper)}
.hero-copy{
  max-width:760px;
  margin:0;
  color:rgba(237,238,233,.82);
  font-size:20px;
}
.hero-note{
  border:1px solid rgba(237,238,233,.18);
  border-radius:6px;
  background:rgba(247,247,243,.055);
  padding:24px;
}
.hero-note strong{display:block;font-size:18px;margin-bottom:8px}
.hero-note span{display:block;color:rgba(237,238,233,.72);font-size:14.5px}
.runway-hero .eyebrow{color:var(--brass-soft)}
.runway-hero .eyebrow::before{background:var(--brass-soft)}
.gate-panel,.calculator-section,.results-section,.method-section{padding:34px 0}
.panel-heading{max-width:820px;margin-bottom:22px}
.panel-heading.compact{margin-bottom:16px}
.panel-heading h2{
  margin:0 0 10px;
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(30px,3vw,44px);
  line-height:1.08;
}
.panel-heading p:not(.eyebrow){margin:0;color:var(--ink-muted)}
.warning-box{
  border-left:4px solid var(--warn);
  background:rgba(174,74,52,.075);
  padding:18px 20px;
  margin:0 0 20px;
}
.warning-box h3{margin:0 0 8px;font-size:18px}
.warning-box p{margin:0 0 10px;color:var(--ink-muted)}
.warning-box p:last-child{margin-bottom:0}
.ack-grid{display:grid;gap:10px;margin:20px 0}
.ack{
  display:flex;
  align-items:flex-start;
  gap:12px;
  border:1px solid var(--rule);
  background:rgba(255,255,255,.18);
  border-radius:4px;
  padding:14px;
  color:var(--ink-muted);
}
.ack input{width:auto;margin:4px 0 0;accent-color:var(--brass-2);flex:none}
.ack:has(input:checked){border-color:rgba(59,93,72,.44);background:rgba(59,93,72,.07);color:var(--ink)}
.primary-action,.secondary-action,.small-action{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:3px;
  min-height:44px;
  padding:12px 18px;
  font-weight:700;
  font-size:14px;
  text-decoration:none;
  transition:transform .12s ease,background .15s,border-color .15s,color .15s;
}
.primary-action{border:1px solid var(--ink);background:var(--ink);color:var(--paper)}
.primary-action:hover{background:var(--ink-soft);color:var(--paper)}
.secondary-action,.small-action{border:1px solid var(--rule-strong);background:transparent;color:var(--ink)}
.secondary-action:hover,.small-action:hover{border-color:var(--ink);background:rgba(18,33,62,.045)}
.primary-action:active,.secondary-action:active,.small-action:active{transform:translateY(1px)}
.calc-panel{
  border:1px solid var(--rule);
  border-radius:5px;
  padding:24px;
  margin:0 0 18px;
  background:rgba(255,255,255,.16);
}
.calc-panel legend{
  padding:0 8px;
  font-family:var(--serif);
  font-size:24px;
  color:var(--ink);
}
.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field-grid label{display:block;color:var(--ink-muted);font-size:13.5px}
.field-grid .full{grid-column:1/-1}
input,select{
  width:100%;
  margin-top:7px;
  border:1px solid var(--rule-strong);
  border-radius:3px;
  background:rgba(255,255,255,.36);
  color:var(--ink);
  padding:12px;
}
input:focus,select:focus{outline:3px solid rgba(164,123,61,.22);border-color:var(--brass-2);background:rgba(255,255,255,.56)}
.field-help{display:block;margin-top:7px;color:rgba(18,33,62,.55);font-size:12.5px;line-height:1.4}
.helper-card{
  display:flex;
  justify-content:space-between;
  gap:18px;
  align-items:center;
  border:1px solid rgba(164,123,61,.32);
  border-radius:4px;
  background:rgba(164,123,61,.08);
  padding:16px;
}
.helper-card strong{display:block;color:var(--ink)}
.helper-card span{display:block;color:var(--ink-muted);font-size:13px;margin-top:3px}
.small-action{min-height:38px;padding:9px 12px;white-space:nowrap;background:rgba(255,255,255,.18)}
.result-gate{
  border-top:1px solid var(--rule);
  margin-top:28px;
  padding-top:28px;
}
.form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.status{min-height:22px;margin:14px 0 0;color:var(--warn);font-family:var(--mono);font-size:12px}
.report-disclaimer{
  border:1px solid rgba(174,74,52,.32);
  border-left:4px solid var(--warn);
  border-radius:4px;
  background:rgba(174,74,52,.065);
  padding:22px;
  margin-bottom:22px;
}
.report-disclaimer h2,.report-disclaimer h3{margin:0 0 10px;font-family:var(--serif);font-weight:500}
.report-disclaimer p{margin:0;color:var(--ink-muted)}
.report-disclaimer.final{margin-top:22px}
.summary-cards{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  margin-bottom:18px;
}
.summary-card{
  border:1px solid var(--rule);
  background:rgba(255,255,255,.18);
  border-radius:4px;
  padding:16px;
  min-height:118px;
}
.summary-card b{
  display:block;
  font-family:var(--serif);
  font-size:34px;
  font-weight:500;
  line-height:1;
  margin-bottom:10px;
}
.summary-card span{
  display:block;
  color:var(--ink-muted);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.results-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.result-panel{
  border-top:1px solid var(--rule);
  padding:22px 0;
}
.result-panel h3{margin:0 0 14px;font-size:22px}
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th,.data-table td{padding:11px 10px;border-top:1px solid var(--rule);text-align:left;vertical-align:top}
.data-table th{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-muted)}
.data-table td:last-child,.data-table th:last-child{text-align:right}
.risk-list{display:grid;gap:10px}
.risk-item{
  border:1px solid var(--rule);
  border-radius:4px;
  padding:12px;
  background:rgba(255,255,255,.16);
}
.risk-item strong{display:block;margin-bottom:4px}
.risk-item span{display:block;color:var(--ink-muted);font-size:13.5px}
.risk-high{border-color:rgba(174,74,52,.45);background:rgba(174,74,52,.07)}
.risk-medium{border-color:rgba(164,123,61,.48);background:rgba(164,123,61,.08)}
.risk-low{border-color:rgba(59,93,72,.38);background:rgba(59,93,72,.07)}
.action-list{margin:0;padding-left:22px;color:var(--ink-muted)}
.action-list li{margin:0 0 10px}
.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.method-grid article{
  border-top:1px solid var(--rule);
  padding-top:18px;
}
.method-grid h3{margin:0 0 10px;font-size:20px}
.method-grid p{margin:0 0 12px;color:var(--ink-muted)}
.source-list{margin:0;padding:0;list-style:none;display:grid;gap:9px}
.source-list a{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.source-date{border-top:1px solid var(--rule);margin:24px 0 0;padding-top:16px;color:var(--ink-muted);font-size:13.5px}
.runway-footer{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:16px;
  border-top:1px solid var(--rule);
  padding:28px;
  color:var(--ink-muted);
  font-size:13px;
}
.runway-footer a{text-decoration:none;color:inherit}
.runway-footer a:hover{color:var(--ink)}
:root[data-theme="dark"]{
  --ink:#EDEEE9;
  --ink-soft:#D8DDCF;
  --ink-muted:rgba(237,238,233,.72);
  --paper:#0E1729;
  --paper-2:#16233A;
  --paper-3:#1B2941;
  --rule:rgba(237,238,233,.14);
  --rule-strong:rgba(237,238,233,.26);
}
:root[data-theme="dark"] header.site{background:rgba(14,23,41,.98)}
:root[data-theme="dark"] .nav-cta{background:var(--paper);color:#101A2E}
:root[data-theme="dark"] .logo-mark{border-color:rgba(237,238,233,.18)}
:root[data-theme="dark"] .wordmark span{color:var(--brass-soft)}
:root[data-theme="dark"] .hero-note,
:root[data-theme="dark"] .calc-panel,
:root[data-theme="dark"] .summary-card,
:root[data-theme="dark"] .risk-item,
:root[data-theme="dark"] .ack{
  background:rgba(237,238,233,.055);
}
:root[data-theme="dark"] input,
:root[data-theme="dark"] select{
  background:rgba(237,238,233,.07);
  color:var(--ink);
}
:root[data-theme="dark"] input:focus,
:root[data-theme="dark"] select:focus{background:rgba(237,238,233,.11)}
:root[data-theme="dark"] .field-help{color:rgba(237,238,233,.55)}
:root[data-theme="dark"] .primary-action{background:var(--paper);color:#101A2E;border-color:var(--paper)}
:root[data-theme="dark"] .primary-action:hover{background:#D8DDCF;color:#101A2E}

@media (max-width:900px){
  .runway-hero-inner,.results-layout,.method-grid{grid-template-columns:1fr}
  .summary-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-copy{font-size:18px}
}
@media (max-width:680px){
  .navrow{padding:14px 20px}
  .site-switches{display:none}
  .runway-hero,.gate-panel,.calculator-section,.results-section,.method-section{width:min(100% - 32px,1180px)}
  .runway-hero{width:100%;padding:46px 0 38px}
  .runway-hero-inner{width:min(100% - 32px,1180px)}
  .runway-hero{padding-top:46px}
  h1{font-size:42px}
  .field-grid,.summary-cards{grid-template-columns:1fr}
  .helper-card{display:block}
  .helper-card .small-action{margin-top:12px}
  .data-table{font-size:13px}
  .data-table th,.data-table td{padding:9px 6px}
}

@media print{
  html{scroll-behavior:auto}
  body.runway-page{background:#fff;color:#111;font-size:12px}
  header.site,.runway-hero,.gate-panel,.calculator-section,.method-section,.runway-footer,.result-actions{display:none !important}
  .results-section{display:block !important;width:100%;padding:0;margin:0}
  .report-disclaimer,.summary-card,.risk-item{break-inside:avoid;background:#fff;border-color:#777}
  .summary-cards{grid-template-columns:repeat(4,1fr)}
  .results-layout{grid-template-columns:1fr 1fr}
  a[href]::after{content:" (" attr(href) ")";font-size:10px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
}