/* tenday.ai — design system. Tokens verbatim from brand/tenday-style-guide.html.
   Fonts self-hosted (SIL OFL): Space Grotesk + IBM Plex Mono. */
@font-face { font-family:"Space Grotesk"; font-style:normal; font-weight:400; font-display:swap; src:url("../fonts/space-grotesk-v22-latin-regular.woff2") format("woff2"); }
@font-face { font-family:"Space Grotesk"; font-style:normal; font-weight:500; font-display:swap; src:url("../fonts/space-grotesk-v22-latin-500.woff2") format("woff2"); }
@font-face { font-family:"Space Grotesk"; font-style:normal; font-weight:600; font-display:swap; src:url("../fonts/space-grotesk-v22-latin-600.woff2") format("woff2"); }
@font-face { font-family:"IBM Plex Mono"; font-style:normal; font-weight:400; font-display:swap; src:url("../fonts/ibm-plex-mono-v20-latin-regular.woff2") format("woff2"); }
@font-face { font-family:"IBM Plex Mono"; font-style:normal; font-weight:500; font-display:swap; src:url("../fonts/ibm-plex-mono-v20-latin-500.woff2") format("woff2"); }

:root{
  --teal:#006778; --sig:#0E9DB0; --night:#101820; --gold:#D7A22A; --gold-deep:#7A5A0F;
  --bone:#F2EFE9; --slate-d:#8FA3AA; --slate-l:#6E7C82; --ink:#080D12;
  --line:rgba(242,239,233,.13); --line-soft:rgba(242,239,233,.07); --line-ink:rgba(16,24,32,.12);
  --sg:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --r:3px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--night);color:var(--bone);font:400 16px/1.55 var(--sg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto} a{color:inherit}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.04;font-weight:600}
h1{font-size:clamp(32px,6vw,46px);letter-spacing:-.035em;line-height:1.02;max-width:20ch;text-wrap:balance}
h2{font-size:clamp(24px,3.6vw,34px);letter-spacing:-.03em;text-wrap:balance}
h3{font-size:17px;letter-spacing:-.01em}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.shell{width:min(1000px,calc(100% - 3rem));margin:auto}
.skip-link{position:fixed;z-index:20;left:1rem;top:-4rem;background:var(--teal);color:var(--bone);padding:.7rem 1rem;font-weight:500;border-radius:var(--r)}
.skip-link:focus{top:1rem}
:focus-visible{outline:2px solid var(--sig);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* eyebrow — the recurring mono label */
.eyebrow{display:inline-block;font:400 10.5px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--sig);margin:0}
.section-light .eyebrow,.section-bone .eyebrow{color:var(--teal)}

/* brand lockup (mark + HTML wordmark, per the style guide) */
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none}
.brand .mark{display:block;flex:none}
.wm{font-family:var(--sg);letter-spacing:-.035em;line-height:.9;white-space:nowrap;font-size:22px}
.wm .a{font-weight:600;color:var(--bone)} .wm .b{font-weight:400;color:var(--slate-d)} .wm .c{font-weight:400;color:var(--gold)}
.on-light .a{color:var(--night)} .on-light .b{color:var(--slate-l)} .on-light .c{color:var(--gold-deep)}

/* header */
.site-header{position:fixed;z-index:10;inset:0 0 auto 0;background:rgba(16,24,32,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;min-height:66px}
main section[id]{scroll-margin-top:88px}
.site-nav{display:flex;align-items:center;gap:1.4rem;font-size:14px;font-weight:500}
.site-nav>a:not(.button){text-decoration:none;color:var(--bone)}
.site-nav>a:not(.button):hover{color:var(--sig)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--bone);border-radius:var(--r);padding:.5rem .7rem;font:500 13px var(--sg);cursor:pointer}

/* buttons — teal primary, gold accent (one per view), outline secondary, ghost link */
.button{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font:500 14px/1 var(--sg);padding:12px 20px;border-radius:var(--r);border:1px solid transparent;text-decoration:none;cursor:pointer;transition:background .17s ease-out,border-color .17s ease-out,color .17s ease-out}
.button-primary{background:var(--teal);color:var(--bone)} .button-primary:hover{background:#0a7c8f}
.button-accent{background:var(--gold);color:var(--night)} .button-accent:hover{background:#e6b23e}
.button-outline{background:transparent;color:var(--bone);border-color:rgba(242,239,233,.3)} .button-outline:hover{border-color:var(--sig);color:var(--sig)}
.button-small{padding:9px 14px;font-size:13px}
.section-bone .button-outline{color:var(--night);border-color:var(--line-ink)} .section-bone .button-outline:hover{color:var(--teal);border-color:var(--teal)}
.text-link{color:var(--sig);font-weight:500;text-decoration:none;text-underline-offset:.3em}
.text-link:hover{text-decoration:underline}

/* sections */
.section{padding:clamp(56px,9vw,96px) 0}
.section-dark{background:var(--night);color:var(--bone)}
.section-ink{background:var(--ink);color:var(--bone);border-top:1px solid var(--line-soft)}
.section-bone{background:var(--bone);color:var(--night)}
.section-bone h1,.section-bone h2,.section-bone h3{color:var(--night)}
.section-heading{max-width:52rem;margin:0 0 40px}
.section-heading h2{margin:14px 0 0}
.section-heading p{margin:16px 0 0;font-size:18px;color:var(--slate-d);max-width:66ch}
.section-bone .section-heading p{color:var(--slate-l)}
.narrow{max-width:46rem}
.lead{font-size:18px;color:var(--slate-d);max-width:66ch}
.section-bone .lead{color:var(--slate-l)}
.muted{color:var(--slate-d)} .section-bone .muted{color:var(--slate-l)}
p{max-width:66ch}

/* hero */
.hero{position:relative;padding:140px 0 clamp(56px,9vw,96px);overflow:hidden;border-bottom:1px solid var(--line-soft)}
.hero-grid{position:absolute;inset:0;opacity:.5;pointer-events:none;background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(160deg,#000,transparent 70%)}
.hero-inner{position:relative}
.hero h1{margin:18px 0 0} .hero h1 em{font-style:normal;color:var(--gold)}
.hero-lede{margin:20px 0 0;font-size:clamp(17px,2.1vw,21px);line-height:1.45;color:var(--bone);max-width:44rem}
.hero-support{margin:12px 0 0;color:var(--slate-d);max-width:42rem}
.button-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px}
.hero-offer{margin:20px 0 0;font-size:14px;color:var(--slate-d);max-width:44rem}
.hero-offer strong{color:var(--bone);font-weight:500}
.hero-strip{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font:400 10.5px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--slate-d)}
.hero-strip .accent{color:var(--gold)}

/* card grids */
.grid{display:grid;gap:14px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid var(--line);border-radius:var(--r);padding:24px;background:rgba(0,103,120,.06)}
.section-bone .card{background:#fff;border-color:var(--line-ink)}
.card h3{margin:0 0 10px}
.card p{margin:0;color:var(--slate-d);font-size:15px}
.section-bone .card p{color:var(--slate-l)}
.card .typical{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13.5px}
.section-bone .card .typical{border-color:var(--line-ink)}
.card-accent{position:relative;overflow:hidden}
.card-accent::before{content:"";position:absolute;top:0;left:0;width:26px;height:3px;background:var(--teal)}
.card .tag{font:400 10px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--slate-d);display:block;margin-bottom:12px}
.section-bone .card .tag{color:var(--slate-l)}

/* method — numbered list */
.method{list-style:none;margin:36px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line)}
.method li{display:flex;gap:18px;padding:24px 20px 24px 0;border-bottom:1px solid var(--line)}
.method li:nth-child(even){padding-left:20px;border-left:1px solid var(--line)}
.method .n{font:600 17px/1 var(--sg);color:var(--gold);flex:none}
.method h3{margin:0 0 6px} .method p{margin:0;color:var(--slate-d);font-size:15px}
/* Bone (light) section overrides — brand rule: gold text becomes Gold Deep on light (plain
   gold fails contrast on Bone), and hairlines flip to the ink line. */
.section-bone .method{border-color:var(--line-ink)}
.section-bone .method li{border-color:var(--line-ink)}
.section-bone .method .n{color:var(--gold-deep)}
.section-bone .method p{color:var(--slate-l)}

/* proof / stat band */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.stat{border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:var(--r);padding:22px}
.stat .num{font:600 clamp(30px,4vw,42px)/1 var(--sg);letter-spacing:-.02em;color:var(--bone)}
.stat .lbl{margin:10px 0 0;font-size:13.5px;color:var(--slate-d)}
.stat .src{margin:10px 0 0;font:400 10px/1.4 var(--mono);letter-spacing:.04em;color:var(--slate-d);text-transform:uppercase}

/* statement */
.statement{max-width:20ch;color:var(--gold)}
.section-bone .statement{color:var(--teal)}

/* code chip */
.code{font-family:var(--mono);font-size:13px;background:#0c1218;border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:var(--r);padding:14px 16px;color:rgba(242,239,233,.85);overflow:auto}
.code .c1{color:var(--sig)} .code .c2{color:var(--gold)} .code .c3{color:var(--slate-l)}

/* contact */
.contact-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.offer-list{list-style:none;margin:20px 0 0;padding:0}
.offer-list li{position:relative;padding:0 0 0 26px;margin:0 0 12px;color:var(--slate-d)}
.offer-list li::before{content:"";position:absolute;left:0;top:9px;width:12px;height:2px;background:var(--gold)}
.offer-mechanism{margin:20px 0 0;font-size:14px;color:var(--slate-d)}
.form-note{margin:16px 0 0;font-size:13.5px;color:var(--slate-d)}
.contact-card{border:1px solid var(--line);border-radius:var(--r);padding:26px;background:rgba(0,103,120,.06)}
.contact-card h3{margin:0 0 8px}
.contact-card>p{color:var(--slate-d);font-size:14.5px;margin:0 0 18px}
.form-group{margin-bottom:16px;display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:13px;font-weight:500;color:var(--bone)}
.form-group input,.form-group textarea{background:rgba(242,239,233,.04);border:1px solid var(--line);border-radius:var(--r);padding:11px 13px;color:var(--bone);font:400 15px var(--sg);width:100%}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--slate-l)}
.form-group textarea{resize:vertical;min-height:120px}
.form-status{min-height:1.2em;margin:0 0 12px;font-size:13.5px;color:var(--sig)}
.form-status.is-error{color:#E0623F}
.form-submit{width:100%}
.honeypot{position:absolute;left:-9999px}

/* footer + powered-by endorsement */
.site-footer{background:var(--ink);border-top:1px solid var(--line-soft);padding:48px 0}
.footer-inner{display:flex;flex-wrap:wrap;gap:24px 48px;justify-content:space-between;align-items:flex-start}
.footer-brand{max-width:34ch}
.footer-tagline{margin:14px 0 0;color:var(--slate-d);font-size:14px}
.footer-meta{font-size:13.5px;color:var(--slate-d);text-align:right}
.footer-meta a{color:var(--slate-d);text-decoration:none} .footer-meta a:hover{color:var(--sig)}
.footer-meta p{margin:0 0 6px}
.powered-by{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font:400 11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--slate-d);text-decoration:none;opacity:.8;transition:opacity .17s ease-out}
.powered-by:hover{opacity:1;color:var(--bone)}
.powered-by img{width:20px;height:20px;display:block;opacity:.85}

/* Charter Client page */
.charter-hero{padding-bottom:0}
.charter-hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:clamp(36px,7vw,76px);align-items:center}
.charter-hero h1{max-width:16ch}
.availability{margin:18px 0 0;color:var(--slate-d);font-size:13.5px}
.offer-summary{border:1px solid rgba(215,162,42,.38);border-top:3px solid var(--gold);background:rgba(8,13,18,.68);padding:28px;border-radius:var(--r)}
.summary-label{margin:0;font:400 10px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--slate-d)}
.summary-total{margin:12px 0 24px;font:600 clamp(42px,6vw,62px)/1 var(--sg);letter-spacing:-.04em;color:var(--bone)}
.summary-line{display:flex;justify-content:space-between;gap:16px;padding-top:16px;border-top:1px solid var(--line);font-size:15px}
.summary-line strong{color:var(--gold);font-size:17px}
.summary-note{margin:7px 0 16px;color:var(--slate-d);font-size:13.5px}
.summary-includes{margin:20px 0 0;padding:16px 0 0;border-top:1px solid rgba(215,162,42,.25);color:var(--bone);font-size:14px}
.charter-hero .hero-strip{position:relative;margin-top:64px;padding:18px 0 20px}
.proof-band{padding:30px 0;border-top:0}
.proof-band-inner{display:grid;grid-template-columns:220px 1fr;gap:36px;align-items:start}
.proof-band-inner p:last-child{margin:0;color:var(--slate-d);font-size:15px;max-width:76ch}
.fit-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:52px;align-items:start}
.business-fit{list-style:none;margin:0;padding:0;border-top:1px solid var(--line-ink)}
.business-fit li{padding:16px 0;border-bottom:1px solid var(--line-ink);color:var(--slate-l)}
.business-fit strong{color:var(--night);font-weight:600}
.fit-callout{padding:26px;border:1px solid var(--line-ink);border-top:3px solid var(--teal);background:#fff}
.fit-callout h3{font-size:22px;margin:12px 0}
.fit-callout p{color:var(--slate-l);font-size:15px}
.fit-callout p:last-child{margin-bottom:0}
.charter-benefits{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.benefit{padding:24px 18px;border-right:1px solid var(--line)}
.benefit:first-child{padding-left:0}.benefit:last-child{border-right:0;padding-right:0}
.benefit>span{font:500 11px/1 var(--mono);color:var(--gold)}
.benefit h3{margin:16px 0 9px}.benefit p{margin:0;color:var(--slate-d);font-size:14px}
.charter-exchange{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:28px}
.charter-exchange p{margin:0;color:var(--slate-d);font-size:14px}
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.price-card{display:flex;flex-direction:column;padding:30px;border:1px solid var(--line-ink);background:#fff}
.price-card-featured{border-top:3px solid var(--gold-deep)}
.price-card-head{display:flex;justify-content:space-between;gap:20px;align-items:start;padding-bottom:22px;border-bottom:1px solid var(--line-ink);margin-bottom:22px}
.price-card-head h3{margin:10px 0 0;font-size:22px}.price-card-head>strong{font-size:28px;letter-spacing:-.03em;color:var(--teal)}
.price-card>p{color:var(--slate-l);font-size:15px}
.price-card .price-term{margin-top:auto;padding-top:18px;border-top:1px solid var(--line-ink);color:var(--night);font-weight:500}
.price-card .text-link{margin-top:4px}
.compact-list{list-style:none;margin:18px 0;padding:0}
.compact-list li{position:relative;padding:0 0 0 22px;margin:0 0 12px;color:var(--slate-d);font-size:15px}
.compact-list li::before{content:"";position:absolute;left:0;top:10px;width:10px;height:2px;background:var(--gold)}
.section-bone .compact-list li{color:var(--slate-l)}
.section-bone .compact-list li::before{background:var(--teal)}
.cost-note{margin:18px 0 0;color:var(--slate-l);font-size:13.5px}
.map-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.map-column{padding:26px;border:1px solid var(--line);background:rgba(0,103,120,.06)}
.map-column h3{margin:0 0 20px;font-size:20px}
.map-column .compact-list{margin:0}
.standalone-map{display:grid;grid-template-columns:.7fr 1.3fr;gap:48px;margin-top:18px;padding:28px;border:1px solid rgba(215,162,42,.35);border-left:3px solid var(--gold)}
.standalone-map h3{font-size:22px;margin:12px 0 0}.standalone-map p{color:var(--slate-d);font-size:15px}.standalone-map p:last-child{margin-bottom:0}
.delivery-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line-ink);border-bottom:1px solid var(--line-ink)}
.delivery-steps li{display:flex;gap:16px;padding:26px 22px;border-right:1px solid var(--line-ink)}
.delivery-steps li:first-child{padding-left:0}.delivery-steps li:last-child{border-right:0;padding-right:0}
.delivery-steps span{font:600 16px/1 var(--sg);color:var(--gold-deep)}
.delivery-steps h3{margin:0 0 8px}.delivery-steps p{margin:0;color:var(--slate-l);font-size:14.5px}
.pause-note{margin:20px 0 0;color:var(--slate-l);font-size:13.5px}
.tuning-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:start}
.tuning-layout .section-heading{margin:0}
.tuning-outcome{padding:28px;border:1px solid var(--line);border-top:3px solid var(--teal)}
.tuning-outcome p{color:var(--slate-d)}.tuning-outcome p:last-child{margin-bottom:0;color:var(--bone);font-weight:500}
.acceptance-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.acceptance-copy p{color:var(--slate-d)}.acceptance-copy p:first-child{color:var(--bone);font-size:18px}.acceptance-copy .fine-print{padding-top:16px;border-top:1px solid var(--line);font-size:13.5px}
.charter-contact .contact-card{background:#fff;border-color:var(--line-ink)}
.charter-contact .contact-card>p{color:var(--slate-l)}
.charter-contact .form-group label{color:var(--night)}
.charter-contact .form-group input,.charter-contact .form-group textarea{background:var(--bone);border-color:var(--line-ink);color:var(--night)}
.charter-contact .form-note{color:var(--slate-l)}
.faq-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:64px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line);padding:0}
.faq-list summary{cursor:pointer;list-style:none;padding:20px 34px 20px 0;font-weight:500;position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:4px;top:17px;color:var(--gold);font:400 22px/1 var(--mono)}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{margin:0;padding:0 34px 20px 0;color:var(--slate-d);font-size:15px}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* responsive */
@media (max-width:820px){
  .grid-3,.stats{grid-template-columns:1fr}
  .contact-layout{grid-template-columns:1fr;gap:32px}
  .method{grid-template-columns:1fr}
  .method li:nth-child(even){padding-left:0;border-left:0}
  .charter-hero-grid,.fit-grid,.tuning-layout,.acceptance-layout,.faq-layout{grid-template-columns:1fr}
  .charter-benefits{grid-template-columns:repeat(2,1fr)}
  .benefit,.benefit:first-child,.benefit:last-child{padding:22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .benefit:nth-child(even){border-right:0}.benefit:last-child{border-bottom:0}
  .proof-band-inner{grid-template-columns:1fr;gap:12px}
  .delivery-steps{grid-template-columns:1fr}
  .delivery-steps li,.delivery-steps li:first-child,.delivery-steps li:last-child{padding:22px 0;border-right:0;border-bottom:1px solid var(--line-ink)}
  .delivery-steps li:last-child{border-bottom:0}
}
@media (max-width:680px){
  .grid-2{grid-template-columns:1fr}
  .nav-toggle{display:inline-block}
  .site-nav{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--night);border-bottom:1px solid var(--line);padding:8px 0}
  .site-nav.is-open{display:flex}
  .site-nav>a{padding:12px 1.5rem}
  .site-nav .button{margin:8px 1.5rem}
  .nav-drop{display:block}
  .nav-drop>a{display:block;padding:12px 1.5rem}
  .nav-drop>a::after{display:none}
  .nav-menu{display:flex;position:static;min-width:0;border:0;background:none;padding:0 0 6px}
  .nav-menu a{padding:9px 1.5rem 9px 2.6rem;color:var(--slate-d);white-space:normal}
  .footer-inner{flex-direction:column} .footer-meta{text-align:left}
  .charter-hero{padding-top:116px}
  .charter-hero .hero-strip{margin-top:46px;display:grid;grid-template-columns:1fr 1fr;line-height:1.4}
  .price-grid,.map-columns,.standalone-map,.charter-exchange{grid-template-columns:1fr}
  .standalone-map{gap:20px}
  .charter-benefits{grid-template-columns:1fr}
  .benefit,.benefit:first-child,.benefit:last-child,.benefit:nth-child(even){padding:20px 0;border-right:0;border-bottom:1px solid var(--line)}
  .price-card{padding:24px}
  .price-card-head{align-items:end}.price-card-head>strong{font-size:24px}
}

/* use-case index */
.use-cases-hero h1{max-width:18ch}
.fit-cards .card{min-height:186px}
.decision-model{margin-top:40px;border:1px solid var(--line-ink);background:#fff;padding:28px}
.decision-model-label{margin:0 0 18px;font:500 10.5px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--teal)}
.decision-flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr)}
.decision-flow li{position:relative;display:flex;flex-direction:column;min-height:132px;padding:4px 28px 4px 20px;border-left:1px solid var(--line-ink)}
.decision-flow li:first-child{padding-left:0;border-left:0}
.decision-flow li:not(:last-child)::after{content:"→";position:absolute;right:-8px;top:41px;z-index:1;width:16px;height:16px;background:#fff;color:var(--teal);font:500 16px/1 var(--mono);text-align:center}
.decision-flow span,.method .phase{font:500 10px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--teal)}
.decision-flow strong{margin:13px 0 8px;font-size:16px;line-height:1.2;color:var(--night)}
.decision-flow small{font-size:13.5px;line-height:1.45;color:var(--slate-l)}
.method-deep .phase{margin:0 0 10px;color:var(--sig)}
.method-deep h3{font-size:19px}
.method-proof{display:grid;grid-template-columns:210px 1fr;gap:24px;margin-top:28px;padding:22px 24px;border:1px solid var(--line);border-left:3px solid var(--gold)}
.method-proof strong{font-size:17px}
.method-proof p{margin:0;color:var(--slate-d);font-size:15px}
.use-case-grid .card{display:flex;flex-direction:column}
.use-case-grid .typical{margin-top:auto}

/* use-case detail pages */
.uc-meta{display:flex;flex-wrap:wrap;gap:0;margin-top:30px;border-top:2px solid var(--teal)}
.uc-meta div{flex:1 1 160px;padding:14px 18px 0 0}
.uc-meta b{display:block;font:400 10px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--slate-d);margin-bottom:5px}
.uc-meta span{font-size:15px;font-weight:500}
.uc-crit{display:grid;gap:8px;margin:0 0 18px}
.uc-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:14px;padding:13px 16px;border:1px solid var(--line);border-left-width:4px;font-size:15px}
.uc-row em{font-style:normal;color:var(--slate-d);font-size:13.5px}
.uc-row.pass{border-left-color:var(--sig)}
.uc-row.flag{border-left-color:var(--gold);background:rgba(215,162,42,.07)}
.uc-pill{font:400 10px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;padding:5px 9px;white-space:nowrap}
.uc-pill.pass{color:var(--sig)}
.uc-pill.flag{color:var(--gold)}
.uc-stop{display:flex;flex-wrap:wrap;align-items:center;gap:16px;padding:16px;border:1px dashed var(--gold);background:rgba(215,162,42,.07)}
.uc-stop strong{font-size:22px;color:var(--gold);white-space:nowrap}
.uc-stop p{margin:0;font-size:15px}
.uc-vend{display:grid;grid-template-columns:200px 1fr;gap:4px 20px;padding:14px 0;border-bottom:1px solid var(--line);align-items:baseline}
.uc-vend strong{font-size:15px}
.uc-vend p{margin:0;font-size:14px;color:var(--slate-d);line-height:1.5}
.uc-out{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:8px}
.uc-out-top{margin:0;padding:12px 18px;background:var(--teal);color:#F2EFE9;font:400 10px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase}
.uc-out-body{padding:20px 18px}
.uc-kv{display:grid;grid-template-columns:104px 1fr;gap:10px 16px;margin:0;font-size:15px}
.uc-kv dt{font:400 10px/1.4 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--slate-d);padding-top:3px}
.uc-kv dd{margin:0}
.uc-kv .call{color:var(--gold);font-weight:600}
.uc-conf{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.uc-conf span:first-child{font:400 10px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--slate-d)}
.uc-track{flex:1;height:8px;background:rgba(242,239,233,.12)}
.uc-fill{display:block;height:100%;width:74%;background:var(--gold)}
.uc-num{font:500 15px/1 var(--mono);color:var(--gold)}
.uc-esc{margin-top:16px;padding:14px 16px;border-left:3px solid var(--gold);background:rgba(215,162,42,.07);font-size:14px;line-height:1.55}
.uc-esc b{display:block;margin-bottom:4px}
@media (max-width:600px){
.uc-vend{grid-template-columns:1fr}
.uc-kv{grid-template-columns:1fr;gap:2px}
.uc-kv dd{margin-bottom:10px}
}
.card h3 a{color:inherit;text-decoration:none;border-bottom:1px solid rgba(0,103,120,.55)}
.card h3 a:hover,.card h3 a:focus-visible{color:var(--sig);border-bottom-color:var(--sig)}
.uc-figure{margin:0;padding:0}
.uc-figure a{display:block;max-width:560px;margin:0 auto;border-radius:var(--r);overflow:hidden}
.uc-figure a:focus-visible{outline:2px solid var(--sig);outline-offset:3px}
.uc-figure img{display:block;width:100%;height:auto}
.uc-figure figcaption{max-width:560px;margin:14px auto 0;text-align:center;font-size:13.5px;color:var(--slate-d)}

/* use-case dropdown */
.nav-drop{position:relative;display:flex;align-items:center}
.nav-drop>a{text-decoration:none;color:var(--bone)}
.nav-drop>a:hover,.nav-drop>a:focus-visible{color:var(--sig)}
.nav-drop>a::after{content:"";display:inline-block;margin-left:7px;border:4px solid transparent;border-top-color:currentColor;transform:translateY(2px)}
.nav-menu{display:none;position:absolute;top:calc(100% + 12px);left:-14px;min-width:274px;flex-direction:column;background:var(--night);border:1px solid var(--line);border-radius:var(--r);padding:6px;z-index:30}
.nav-drop:hover .nav-menu,.nav-drop:focus-within .nav-menu{display:flex}
.nav-menu a{display:block;padding:9px 12px;font-size:13.5px;font-weight:400;color:var(--bone);text-decoration:none;border-radius:2px;white-space:nowrap}
.nav-menu a:hover,.nav-menu a:focus-visible{background:rgba(0,103,120,.3);color:var(--sig)}

@media (max-width:820px){
  .decision-flow{grid-template-columns:1fr 1fr}
  .decision-flow li{min-height:0;padding:20px;border-left:0;border-top:1px solid var(--line-ink)}
  .decision-flow li:first-child,.decision-flow li:nth-child(2){border-top:0}
  .decision-flow li:nth-child(odd){padding-left:0;border-right:1px solid var(--line-ink)}
  .decision-flow li:not(:last-child)::after{display:none}
}
@media (max-width:600px){
  .decision-model{padding:22px}
  .decision-flow{grid-template-columns:1fr}
  .decision-flow li,.decision-flow li:first-child,.decision-flow li:nth-child(2),.decision-flow li:nth-child(odd){padding:18px 0;border:0;border-top:1px solid var(--line-ink)}
  .decision-flow li:first-child{border-top:0}
  .method-proof{grid-template-columns:1fr;gap:8px}
}

/* use-case library: the whole card is the target */
.use-case-grid .card{transition:border-color .15s ease,transform .15s ease}
.use-case-grid .card:hover,.use-case-grid .card:focus-within{border-color:var(--sig);transform:translateY(-2px)}
.use-case-grid .card h3 a{border-bottom:0}
.use-case-grid .card h3 a::after{content:"";position:absolute;inset:0;z-index:1}
.use-case-grid .card:hover h3 a,.use-case-grid .card:focus-within h3 a{color:var(--sig)}
.use-case-grid .card h3 a:focus-visible{outline:2px solid var(--sig);outline-offset:4px}
.use-case-grid .card .typical{position:relative;z-index:2}
.use-case-grid .card .typical a{color:var(--sig);text-decoration:none}
.use-case-grid .card .typical a::after{content:" \2192"}
.use-case-grid .card .typical a:hover{text-decoration:underline}
@media (prefers-reduced-motion:reduce){.use-case-grid .card{transition:none}.use-case-grid .card:hover{transform:none}}

/* breadcrumbs on use-case detail pages */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:0 0 18px;font:400 12px/1 var(--mono);letter-spacing:.06em;color:var(--slate-d)}
.crumbs a{color:var(--slate-d);text-decoration:none}
.crumbs a:hover,.crumbs a:focus-visible{color:var(--sig)}
.crumbs [aria-current]{color:var(--bone)}
.crumbs-sep{color:var(--slate-l)}

/* section anchors clear the fixed header when linked directly */
.section[id]{scroll-margin-top:84px}

/* more use cases: previous and next in library order */
.uc-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line-ink)}
.uc-pager a{display:block;text-decoration:none;color:var(--night);font-weight:500;font-size:16px;line-height:1.3}
.uc-pager a span{display:block;font:400 10px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:6px}
.uc-pager a:hover,.uc-pager a:focus-visible{color:var(--teal)}
.uc-pager a:focus-visible{outline:2px solid var(--teal);outline-offset:4px}
.uc-next{text-align:right}
@media (max-width:600px){.uc-pager{grid-template-columns:1fr}.uc-next{text-align:left}}