@font-face{font-family:"Barlow";src:url("/assets/fonts/barlow-400.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow";src:url("/assets/fonts/barlow-400-italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"Barlow";src:url("/assets/fonts/barlow-500.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow";src:url("/assets/fonts/barlow-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow";src:url("/assets/fonts/barlow-700.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow Condensed";src:url("/assets/fonts/barlowcondensed-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Barlow Condensed";src:url("/assets/fonts/barlowcondensed-700.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}

:root{
  --navy:#052E4E; --cyan:#0899BA; --cyan-dark:#067A94; --coral:#FF6B4A;
  --foam:#F4FAFC; --ink:#22303A; --muted:#5B7183; --card:#FFFFFF; --line:#DCEBF1;
  --shadow:0 10px 30px rgba(5,46,78,.10); --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Barlow",system-ui,sans-serif;background:var(--foam);color:var(--ink);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
h1,h2,h3,.cond{font-family:"Barlow Condensed","Barlow",sans-serif;text-transform:uppercase;letter-spacing:.04em;color:var(--navy);line-height:1.08}
a{color:var(--cyan-dark)}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
img{max-width:100%}

/* lane line motif */
.lane-line{display:flex;height:7px}
.lane-line span{flex:1}
.lane-line .s1{background:var(--navy)} .lane-line .s2{background:var(--cyan)} .lane-line .s3{background:var(--coral)} .lane-line .s4{background:var(--cyan)} .lane-line .s5{background:var(--navy)}

/* header */
header{position:sticky;top:0;z-index:50;background:var(--navy);box-shadow:0 2px 14px rgba(5,46,78,.25)}
.header-in{display:flex;align-items:center;gap:18px;max-width:1180px;margin:0 auto;padding:12px 20px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:none}
.brand svg{width:38px;height:38px;flex:none}
.brand .name{font-family:"Barlow Condensed",sans-serif;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#fff;font-size:23px;line-height:1}
.brand .name em{font-style:normal;color:#57C7DE}
nav.main{margin-left:auto}
nav.main ul{display:flex;gap:2px;list-style:none;flex-wrap:wrap;justify-content:flex-end}
nav.main a{display:block;color:#D9EEF5;text-decoration:none;font-weight:600;font-size:14.5px;padding:9px 10px;border-radius:8px;white-space:nowrap}
nav.main a:hover{background:rgba(255,255,255,.10);color:#fff}
nav.main a.on{color:#fff;background:var(--cyan)}
.burger{display:none;margin-left:auto;background:transparent;border:1px solid rgba(255,255,255,.35);border-radius:9px;width:46px;height:46px;cursor:pointer;align-items:center;justify-content:center}
.burger svg{width:24px;height:24px}
.mobile-panel{background:var(--navy);border-top:1px solid rgba(255,255,255,.14);padding:8px 20px 16px}
.mobile-panel[hidden]{display:none}
.mobile-panel a{display:block;color:#D9EEF5;text-decoration:none;font-weight:600;font-size:16px;padding:12px 6px;border-bottom:1px solid rgba(255,255,255,.08);min-height:44px}
.mobile-panel a.on{color:#57C7DE}

/* breadcrumbs */
.crumbs{padding-top:16px;font-size:14.5px;color:var(--muted)}
.crumbs a{color:var(--cyan-dark);text-decoration:none;font-weight:600}
.crumbs .sep{margin:0 4px;color:#9db8c6}

/* hero / page head */
.hero{padding:44px 0 10px;text-align:center}
.hero .kicker,.pagehead .kicker{display:inline-block;font-weight:700;font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--coral);margin-bottom:10px}
.hero h1{font-size:64px;font-weight:700}
.hero .sub{font-size:19px;color:var(--muted);max-width:600px;margin:12px auto 0}
.pagehead{padding:30px 0 4px;text-align:center}
.pagehead h1{font-size:48px;font-weight:700}
.pagehead .sub{font-size:18px;color:var(--muted);max-width:640px;margin:10px auto 0}

/* calculator card */
.calc{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:26px 28px 28px;margin:28px auto 0;text-align:left;max-width:760px}
.tabs{display:flex;gap:6px;background:var(--foam);border:1px solid var(--line);border-radius:12px;padding:5px;flex-wrap:wrap}
.tabs button{flex:1;border:0;background:transparent;cursor:pointer;font-family:"Barlow",sans-serif;font-weight:600;font-size:15px;color:var(--muted);padding:11px 6px;border-radius:8px;min-height:44px}
.tabs button.active{background:var(--cyan);color:#fff;box-shadow:0 3px 10px rgba(8,153,186,.35)}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px;margin-top:20px}
.calc-grid .full{grid-column:1 / -1}
.field label{display:block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--navy);margin-bottom:7px}
.seg{display:flex;border:1.5px solid var(--cyan);border-radius:10px;overflow:hidden}
.seg button{flex:1;border:0;background:#fff;color:var(--cyan-dark);font-family:"Barlow",sans-serif;font-weight:600;font-size:15px;padding:10px;cursor:pointer;min-height:44px}
.seg button.active{background:var(--cyan);color:#fff}
.field input,.field select,.field textarea{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:11px 13px;font-size:17px;font-family:"Barlow",sans-serif;color:var(--ink);background:#fff;min-height:48px}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--cyan);border-color:var(--cyan)}
.chips{display:flex;gap:8px;margin-top:9px;flex-wrap:wrap}
.chips button{border:1.5px solid var(--cyan);background:#fff;color:var(--cyan-dark);font-weight:600;font-size:14px;border-radius:999px;padding:8px 15px;cursor:pointer;min-height:38px}
.chips button.active{background:var(--navy);border-color:var(--navy);color:#fff}
.result{margin-top:22px;background:linear-gradient(135deg,var(--navy),#074A75);border-radius:14px;color:#fff;padding:20px 22px}
.result .rlabel{font-size:12.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#9AD6E6}
.result .big{font-family:"Barlow Condensed",sans-serif;font-size:64px;font-weight:700;line-height:1;color:#fff;margin:2px 0 0}
.result .big small{font-size:24px;color:#9AD6E6;letter-spacing:.05em}
.result .tiles{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap}
.result .tile{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:9px 14px}
.result .tile b{display:block;font-size:21px;font-weight:700;line-height:1.1}
.result .tile span{font-size:12.5px;color:#BFE6F0;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.result p.rnote{margin-top:12px;font-size:15px;color:#D9EEF5}
.err{color:#B3261E;font-weight:600;font-size:15px;margin-top:10px;min-height:1.2em}

/* tables */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff;margin-top:14px}
table{border-collapse:collapse;width:100%;font-size:15.5px;min-width:420px}
th{font-family:"Barlow Condensed",sans-serif;text-transform:uppercase;letter-spacing:.07em;font-size:15px;background:var(--navy);color:#fff;text-align:left;padding:10px 14px}
td{padding:9px 14px;border-top:1px solid var(--line)}
tr.hl td{background:#FFF3EE;font-weight:600}
table.sticky-first th:first-child,table.sticky-first td:first-child{position:sticky;left:0;background:#fff;z-index:1}
table.sticky-first th:first-child{background:var(--navy)}
table.sticky-first tr.hl td:first-child{background:#FFF3EE}
.note{font-size:14px;color:var(--muted);margin-top:9px}
.bench-note{text-align:center;font-size:14px;color:var(--muted);margin-top:9px;font-style:italic}

/* sections & prose */
section{padding:38px 0 6px}
.sec-head{text-align:center;max-width:660px;margin:0 auto 20px}
.sec-head h2{font-size:38px}
.sec-head p{color:var(--muted);margin-top:7px}
.prose p{margin:0 auto 14px;max-width:44em}
.prose h2{font-size:34px;text-align:center;margin:26px 0 12px}
.prose h3{font-size:24px;margin:20px 0 8px}
.prose ul,.prose ol{max-width:42em;margin:0 auto 14px;padding-left:24px}
.prose li{margin-bottom:6px}
.formula{background:var(--navy);color:#fff;border-radius:14px;text-align:center;padding:22px 18px;font-family:"Barlow Condensed",sans-serif;font-size:29px;letter-spacing:.03em;margin-top:14px}
.formula b{color:#57C7DE}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px;margin-top:16px}
.card p{margin-bottom:12px} .card p:last-child{margin-bottom:0}
.card.limits{border-style:dashed}
.trust{text-align:center;margin:26px auto 0;max-width:760px;font-size:15.5px;color:var(--muted);background:#fff;border:1px dashed var(--cyan);border-radius:12px;padding:13px 18px}
.trust a{font-weight:600}

/* tools grid */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tcard{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:19px 20px;text-decoration:none;color:var(--ink)}
.tcard:hover{border-color:var(--cyan)}
.tcard .ic{flex:none;width:46px;height:46px;border-radius:12px;background:var(--foam);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.tcard .ic svg{width:25px;height:25px}
.tcard .ic-coral{background:var(--coral);border-color:var(--coral)}
.tcard h3{font-size:21px}
.tcard p{font-size:14.5px;color:var(--muted);margin-top:3px;line-height:1.45}
.tcard.wide{grid-column:1 / -1;align-items:center;background:linear-gradient(120deg,#fff,#EAF6FA)}
.tcard.wide h3{font-size:24px}
.tcard .go{margin-left:auto;font-family:"Barlow Condensed",sans-serif;font-size:19px;color:var(--coral);text-transform:uppercase;letter-spacing:.06em;white-space:nowrap}

/* FAQ */
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:11px;padding:4px 20px;box-shadow:0 4px 14px rgba(5,46,78,.05)}
.faq summary{cursor:pointer;font-weight:600;font-size:17px;color:var(--navy);padding:13px 0;list-style:none;min-height:44px;display:flex;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq details p{padding:0 0 15px;color:#3D4F5C;font-size:16px}

/* author card */
.author-card{display:flex;gap:20px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-top:16px}
.author-card img{width:110px;height:110px;border-radius:50%;flex:none;border:3px solid var(--cyan)}
.author-card h3{font-size:26px;margin-bottom:6px}
.author-card .profiles{margin-top:10px;font-weight:600}

/* footer */
footer{background:var(--navy);color:#C7E3EE;margin-top:52px}
.footer-in{max-width:880px;margin:0 auto;padding:34px 20px 40px;text-align:center}
.footer-in .byline{font-family:"Barlow Condensed",sans-serif;font-size:21px;letter-spacing:.05em;text-transform:uppercase;color:#fff}
.footer-profiles{margin-top:10px;font-size:15px}
.footer-profiles a{color:#9AD6E6;text-decoration:none;font-weight:600}
.footer-in .links{margin:15px 0 12px;display:flex;gap:6px 20px;justify-content:center;flex-wrap:wrap}
.footer-in .links a{color:#C7E3EE;text-decoration:none;font-weight:600;font-size:15px;padding:6px 2px}
.footer-in .links a:hover{color:#fff}
.footer-in .legal{font-size:13.5px;color:#8FB4C6}
.footer-in .legal a{color:#9AD6E6}

/* back to top */
#to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;border:0;cursor:pointer;background:var(--cyan);color:#fff;box-shadow:0 6px 18px rgba(8,153,186,.45);display:flex;align-items:center;justify-content:center;z-index:60;opacity:0;pointer-events:none;transition:opacity .25s}
#to-top.show{opacity:1;pointer-events:auto}
#to-top svg{width:22px;height:22px}

/* print (pace chart) */
@media print{
  header,footer,#to-top,.crumbs,.no-print{display:none !important}
  body{background:#fff;font-size:12px}
  .table-scroll{overflow:visible;border:0}
  table{min-width:0;font-size:11px}
}

/* mobile */
@media (max-width:900px){
  nav.main{display:none}
  .burger{display:flex}
  .header-in{padding:10px 14px;gap:10px}
  .brand{gap:8px}
  .brand svg{width:32px;height:32px}
  .brand .name{font-size:19px}
}
@media (max-width:760px){
  .hero{padding-top:32px}
  .hero h1{font-size:46px}
  .pagehead h1{font-size:38px}
  .hero .sub,.pagehead .sub{font-size:17px}
  body{text-align:center}
  .calc{text-align:center;padding:20px 16px 22px}
  .calc-grid{grid-template-columns:1fr}
  .field label{text-align:center}
  .chips{justify-content:center}
  .result .tiles{justify-content:center}
  .result .big{font-size:52px}
  td,th{text-align:left}
  .grid{grid-template-columns:1fr}
  .tcard{text-align:left}
  .sec-head h2{font-size:32px}
  .prose h2{font-size:29px}
  .prose h3{text-align:center}
  .prose ul,.prose ol{text-align:left}
  .formula{font-size:23px}
  .author-card{flex-direction:column;align-items:center;text-align:center}
  .faq details{text-align:left}
  section p,.card p{max-width:36em;margin-left:auto;margin-right:auto}
}