:root{--bg:#06111f;--bg-soft:#0a192a;--panel:#0d1d30;--panel-2:#11243a;--line:rgba(255,255,255,.11);--text:#f3f7fb;--muted:#9fb0c3;--accent:#7ee7b7;--accent-2:#72b8ff;--warning:#ffd280;--danger:#ff9f9f;--shadow:0 24px 70px rgba(0,0,0,.28);--radius:20px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 82% 4%,rgba(71,132,196,.14),transparent 27rem),radial-gradient(circle at 12% 18%,rgba(71,196,147,.08),transparent 25rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}
button,input,select{font:inherit}
button{cursor:pointer}
a{color:inherit}
h1,h2,h3,p{margin-top:0}
.eyebrow,.step{color:var(--accent);font-size:.72rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase;margin:0 0 10px}

/* header / nav / breadcrumbs, matching the rest of the site */
.site-header{width:min(1440px,calc(100% - 40px));margin:0 auto;height:82px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;text-decoration:none;flex:0 0 auto}
.brand-logo{display:block;width:228px;height:auto;max-width:228px;object-fit:contain}
.site-header nav{display:flex;gap:28px}
.site-header nav a{text-decoration:none;color:var(--muted);font-size:.92rem}
.site-header nav a:hover{color:var(--text)}
main{width:min(1080px,calc(100% - 40px));margin:0 auto}
.breadcrumbs{display:flex;align-items:center;gap:8px;padding-top:20px;color:#7f92a7;font-size:.72rem}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs a:hover{color:var(--text)}
.mobile-breadcrumbs{display:none}

/* hero */
.hero{padding:52px 0 40px}
h1{font-size:clamp(2.4rem,5.5vw,4.2rem);letter-spacing:-.05em;line-height:1;margin-bottom:20px;max-width:760px}
.lede{color:#c4d1de;font-size:clamp(1.02rem,2vw,1.2rem);max-width:720px;margin-bottom:20px}
.hero-trust{display:grid;gap:7px;color:#c8d5e2;font-size:.84rem;margin-bottom:20px}
.hero-trust span::first-letter{color:var(--accent)}
.tool-meta{display:flex;gap:10px;flex-wrap:wrap;color:#8093a8;font-size:.7rem;margin-bottom:6px}
.tool-meta span,.tool-meta a{padding:5px 8px;border:1px solid rgba(255,255,255,.09);border-radius:999px}
.tool-meta a{color:var(--accent);text-decoration:none}
.hero-notice{padding:15px 17px;border:1px solid rgba(126,231,183,.26);background:rgba(126,231,183,.06);border-radius:12px;color:var(--muted);font-size:.86rem;max-width:820px}
.hero-notice strong{color:var(--text)}
.crosslink-note{margin-top:14px;font-size:.84rem;color:var(--muted)}
.crosslink-note a{color:var(--accent);font-weight:700;text-decoration:none}
.crosslink-note a:hover{text-decoration:underline}

/* estimator shell */
.estimator-shell{display:grid;grid-template-columns:minmax(320px,.85fr) minmax(0,1.15fr);gap:20px;align-items:start;margin:10px 0 40px}
.inputs-panel,.results-panel{border:1px solid var(--line);border-radius:var(--radius);background:rgba(10,25,42,.84);box-shadow:var(--shadow)}
.inputs-panel{padding:24px}
.results-panel{padding:26px}
.panel-heading h2{margin:0 0 4px;letter-spacing:-.03em}
.panel-heading p{color:var(--muted);font-size:.84rem;margin:0 0 20px}

.field{display:block;min-width:0;margin-bottom:16px}
.field>span:first-child{display:block;color:var(--muted);font-size:.78rem;margin:0 0 6px 2px}
.field>span:first-child small{display:block;color:#71859a;font-size:.68rem;line-height:1.4;margin-top:2px;font-weight:400}
.input-wrap{display:flex;align-items:center;border:1px solid var(--line);background:rgba(255,255,255,.025);border-radius:10px;overflow:hidden}
.input-wrap:focus-within{border-color:rgba(126,231,183,.65);box-shadow:0 0 0 3px rgba(126,231,183,.08)}
.input-wrap i{color:#8194a9;font-style:normal;font-size:.72rem;white-space:nowrap;padding-right:10px}
.input-wrap input{width:100%;min-width:0;border:0;outline:0;color:var(--text);background:transparent;padding:12px 10px;font-size:1.05rem}

.switch-field{display:flex;justify-content:space-between;align-items:center;gap:20px;border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:14px}
.switch-field span{display:flex;flex-direction:column}
.switch-field small{color:var(--muted);font-size:.72rem;margin-top:2px}
.switch{appearance:none;width:44px;height:24px;border-radius:99px;background:#3d4b5b;position:relative;flex:0 0 auto}
.switch::after{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:transform .2s ease}
.switch:checked{background:var(--accent)}
.switch:checked::after{transform:translateX(20px)}

.size-field>span:first-child{display:block;color:var(--muted);font-size:.78rem;margin:0 0 8px 2px}
.size-field>span:first-child small{display:block;color:#71859a;font-size:.68rem;line-height:1.4;margin-top:2px;font-weight:400}
.size-options{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.size-option{border:1px solid var(--line);border-radius:11px;background:transparent;color:var(--text);padding:12px 8px;text-align:center}
.size-option strong{display:block;font-size:.86rem}
.size-option small{display:block;color:var(--muted);font-size:.68rem;margin-top:3px}
.size-option.active{border-color:var(--accent);background:rgba(126,231,183,.1)}
.size-option.active small{color:#bfe9d5}

.assumptions-note{margin-top:4px}
.assumptions-note summary{list-style:none;cursor:pointer;color:var(--muted);font-size:.78rem;padding:6px 0}
.assumptions-note summary::-webkit-details-marker{display:none}
.assumptions-note summary::before{content:"+ ";color:var(--accent)}
.assumptions-note[open] summary::before{content:"– "}
.assumptions-list{color:var(--muted);font-size:.78rem;line-height:1.7;margin:6px 0 0;padding-left:0;list-style:none}
.assumptions-list li{border-top:1px solid rgba(255,255,255,.07);padding:6px 0}

/* results */
.results-onboarding{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-height:280px;gap:14px}
.results-onboarding-icon{font-size:1.6rem;color:var(--accent)}
.results-onboarding h2{font-size:1.5rem;letter-spacing:-.03em}
.results-onboarding p{color:var(--muted);max-width:440px}
.results-panel.is-onboarding .results-body{display:none}
.results-panel:not(.is-onboarding) .results-onboarding{display:none}

.results-heading h2{font-size:clamp(1.35rem,2.6vw,1.85rem);letter-spacing:-.03em;line-height:1.15;margin-bottom:18px}
.scorecards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px}
.scorecard{min-height:120px;padding:16px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.025);display:flex;flex-direction:column}
.scorecard.primary{background:linear-gradient(145deg,rgba(126,231,183,.15),rgba(114,184,255,.07));border-color:rgba(126,231,183,.28)}
.scorecard span{color:var(--muted);font-size:.73rem}
.scorecard strong{font-size:clamp(1.3rem,2.6vw,1.9rem);letter-spacing:-.04em;margin:auto 0 0}
.scorecard small{color:#7f92a7;font-size:.66rem;line-height:1.35;margin-top:8px}

.verdict{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;padding:18px;background:var(--panel-2);border:1px solid var(--line);border-radius:15px;margin-bottom:16px}
.verdict-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:var(--accent);color:var(--bg);font-weight:900;font-size:1.25rem}
.verdict h3{margin-bottom:5px;font-size:1.05rem}
.verdict p:last-child{color:var(--muted);margin-bottom:0;font-size:.86rem}

.full-calc-cta{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:18px 20px;border:1px solid rgba(114,184,255,.28);border-radius:14px;background:linear-gradient(145deg,rgba(114,184,255,.09),rgba(126,231,183,.035))}
.full-calc-cta p{margin:0;color:var(--muted);font-size:.86rem;max-width:420px}
.full-calc-cta strong{color:var(--text);display:block;margin-bottom:3px;font-size:.95rem}
.primary-button{display:inline-block;color:var(--bg);border:1px solid var(--accent);background:var(--accent);border-radius:999px;padding:10px 17px;white-space:nowrap;font-weight:750;text-decoration:none;font-size:.86rem}
.primary-button:hover{filter:brightness(1.05);transform:translateY(-1px)}
.outline-button{display:inline-block;color:var(--text);border:1px solid var(--line);background:transparent;border-radius:999px;padding:9px 15px;white-space:nowrap;text-decoration:none;font-size:.86rem}
.outline-button:hover{border-color:var(--accent);color:var(--accent)}

.disclaimer{margin-top:16px;padding:14px 16px;border:1px solid rgba(255,210,128,.28);background:rgba(255,210,128,.06);border-radius:12px;color:var(--muted);font-size:.78rem;line-height:1.5}
.disclaimer strong{color:var(--text)}

/* methodology / faq */
.methodology-section{padding:10px 0 50px}
details.methodology{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:2px 0}
details.methodology summary{list-style:none;padding:18px 0;font-weight:750;cursor:pointer;position:relative}
details.methodology summary::-webkit-details-marker{display:none}
details.methodology summary::after{content:"+";position:absolute;right:2px;color:var(--muted);font-size:1.2rem}
details.methodology[open] summary::after{content:"–"}
.method-copy{color:var(--muted);font-size:.86rem;max-width:820px;padding-bottom:18px}
.method-copy p{margin:0 0 10px}
.method-copy p:last-child{margin-bottom:0}

.version-history-collapsed{width:min(1080px,calc(100% - 40px));margin:0 auto;padding:0 0 30px}
.version-history-collapsed details{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.version-history-collapsed summary{list-style:none;padding:16px 0;cursor:pointer;color:var(--muted);font-size:.86rem}
.version-history-collapsed summary::-webkit-details-marker{display:none}
.version-list{padding:4px 0 16px}
.version-list article{border-top:1px solid rgba(255,255,255,.07);padding:12px 0;display:grid;grid-template-columns:70px 1fr;gap:12px}
.version-list article span{color:var(--accent);font-size:.72rem;font-weight:800}
.version-list article strong{display:block;font-size:.86rem;margin-bottom:3px}
.version-list article p{color:var(--muted);font-size:.8rem;margin:0}

footer{width:min(1440px,calc(100% - 40px));margin:0 auto;padding:36px 0 56px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted)}
footer strong{color:var(--text);letter-spacing:.16em}
footer p{font-size:.82rem;margin-top:8px}
footer>div:last-child{display:flex;gap:22px;align-items:flex-start}
footer a{text-decoration:none;font-size:.82rem}
footer a:hover{color:var(--text)}

@media(max-width:900px){
  .estimator-shell{grid-template-columns:1fr}
  .scorecards{grid-template-columns:1fr}
  .size-options{grid-template-columns:1fr}
}
@media(max-width:640px){
  .site-header{width:min(100% - 24px,1440px)}
  .site-header nav{display:none}
  .breadcrumbs{display:none}
  .mobile-breadcrumbs{display:flex;padding-top:16px}
  .mobile-breadcrumbs a{color:var(--muted);text-decoration:none;font-size:.8rem}
  main,footer{width:min(100% - 24px,1440px)}
  footer{flex-direction:column;gap:20px}
  .full-calc-cta{flex-direction:column;align-items:flex-start}
}