/* Volens — styles.css
   Mobile-first, system fonts, no external requests.
   Brand: navy ground, signal orange, ice cyan (from the existing identity). */

:root{
  --navy:#070A12; --navy-2:#0C111C; --navy-3:#141B2B;
  --ink:#0F172A; --ink-2:#334155; --ink-3:#5B6677;
  --paper:#FFFFFF; --paper-2:#F4F6FA; --line:#DDE3EC; --line-2:#C8D0DC;
  --orange:#FF8A3D; --orange-hi:#FFA266; --orange-ink:#1B0D03; --orange-deep:#A8481B;
  --ice:#8FD8FF; --ice-deep:#0B5E8E;
  --ok:#1E7A4E; --ok-dark:#4ADE9B; --err:#B42318;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --r:10px; --r-lg:14px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:var(--font);font-size:1rem;line-height:1.6;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;height:auto;display:block}
h1,h2,h3{line-height:1.12;margin:0;letter-spacing:-.02em;text-wrap:balance}
h1{font-size:clamp(2rem,5.5vw,3.5rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.6vw,2.4rem);font-weight:700}
h3{font-size:1.15rem;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
a{color:var(--ice-deep);text-underline-offset:.15em}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:4px}
.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}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--orange);color:var(--orange-ink);padding:10px 14px;border-radius:8px;font-weight:600}
.skip:focus{top:12px}
.anchor{display:block;position:relative;top:calc(-1 * var(--header-h) - 8px);visibility:hidden}
[id]{scroll-margin-top:calc(var(--header-h) + 12px)}
.wrap{max-width:1140px;margin-inline:auto;padding-inline:var(--gutter)}
.wrap.narrow{max-width:820px}
.section{padding-block:clamp(56px,8vw,104px)}
.section.alt{background:var(--paper-2)}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,44px);display:grid;gap:14px}
.eyebrow{font-size:.85rem;font-weight:700;letter-spacing:.02em;color:var(--orange-deep);margin:0 0 6px}
.lede{color:var(--ink-2);font-size:clamp(1.05rem,1.4vw,1.2rem);max-width:64ch}
.fine{font-size:.85rem;color:var(--ink-3)}
.fine.center{text-align:center;margin-top:28px}

/* Buttons: one primary style, one ghost style. 44px minimum height. */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:var(--r);font-weight:700;font-size:.95rem;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit;transition:background .15s,color .15s,border-color .15s,transform .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--orange);color:var(--orange-ink);border-color:var(--orange)}
.btn-primary:hover{background:var(--orange-hi);border-color:var(--orange-hi);color:var(--orange-ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn-lg{min-height:52px;padding:12px 26px;font-size:1.05rem}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35)}
.hero .btn-ghost:hover{border-color:#fff;color:#fff}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,10,18,.94);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.08);color:#fff}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:10px;color:inherit;text-decoration:none;padding:8px 0;min-height:44px}
.brand .mark{flex:none}
.wordmark{font-weight:800;letter-spacing:.08em;font-size:1.15rem}
.primary ul{list-style:none;display:flex;gap:4px}
.primary a:not(.btn){color:rgba(255,255,255,.85);text-decoration:none;font-weight:600;font-size:.95rem;padding:10px 12px;border-radius:8px;display:inline-block;min-height:44px;min-width:44px;text-align:center;line-height:24px}
.primary a:not(.btn):hover{color:#fff;background:rgba(255,255,255,.08)}
.menu-btn{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.25);border-radius:8px;background:transparent;color:#fff;cursor:pointer;place-items:center}
.menu-btn .i-close{display:none}
.menu-btn[aria-expanded="true"] .i-open{display:none}
.menu-btn[aria-expanded="true"] .i-close{display:block}
@media (min-width:900px){
  .primary{display:flex;align-items:center;gap:16px}
}
@media (max-width:899.98px){
  .menu-btn{display:grid}
  .primary{display:none;position:absolute;left:0;right:0;top:100%;background:var(--navy);border-bottom:1px solid rgba(255,255,255,.1);padding:8px var(--gutter) 20px;box-shadow:0 20px 40px -20px rgba(0,0,0,.6)}
  .primary.open{display:block}
  .primary ul{flex-direction:column;gap:0}
  .primary a:not(.btn){display:block;padding:12px 8px;font-size:1.05rem;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-cta{margin-top:14px;width:100%}
}

/* Hero (dark, brand ground) */
.hero{background:var(--navy);color:#fff;padding-block:clamp(48px,8vw,96px);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 400px at 85% 10%,rgba(255,138,61,.18),transparent 60%),
  radial-gradient(500px 360px at 10% 100%,rgba(143,216,255,.14),transparent 60%);pointer-events:none}
.hero .wrap{position:relative}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:960px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.hero .eyebrow{color:var(--orange)}
.hero .lede{color:rgba(255,255,255,.82);margin-top:18px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:28px;color:rgba(255,255,255,.75);font-size:.92rem}
.hero-points li::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ice);margin-right:9px;vertical-align:1px}

/* Example run panel */
.run{margin:0;background:var(--navy-2);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-lg);font-family:var(--mono);font-size:.8rem;line-height:1.55;min-width:0}
.run-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.75);font-family:var(--font);font-size:.85rem;font-weight:600}
.tag{font-family:var(--font);font-size:.75rem;font-weight:600;letter-spacing:.01em;color:var(--ok-dark);border:1px solid rgba(74,222,155,.45);padding:3px 8px;border-radius:999px}
.run-log{list-style:none;padding:12px 16px;display:grid;gap:6px}
.run-log li{display:grid;grid-template-columns:44px 68px 1fr;gap:10px;align-items:baseline}
.run-log .t{color:rgba(255,255,255,.45)}
.run-log .k{color:var(--ice);font-weight:600}
.run-log .k.act{color:var(--orange)}
.run-log .k.ok{color:var(--ok-dark)}
.run-log .v{color:rgba(255,255,255,.85);min-width:0;overflow-wrap:anywhere}
.run-foot{padding:10px 16px 14px;border-top:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.6);font-family:var(--font);font-size:.85rem}
@media (max-width:380px){.run-log li{grid-template-columns:40px 1fr}.run-log .k{grid-column:2}.run-log .v{grid-column:1/-1;padding-left:50px}}

/* Facts strip */
.facts{border-bottom:1px solid var(--line);background:var(--paper);padding-block:28px}
.facts-grid{display:grid;gap:24px}
@media (min-width:900px){.facts-grid{grid-template-columns:1.2fr .8fr;align-items:center}}
.facts-title{font-size:.85rem;font-weight:700;letter-spacing:.02em;color:var(--ink-3);margin-bottom:12px}
.systems{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.systems li{border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:.9rem;font-weight:600;color:var(--ink-2);background:var(--paper-2)}
.fact-list{margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px}
.fact-list dt{font-size:.8rem;letter-spacing:.02em;color:var(--ink-3);font-weight:700}
.fact-list dd{margin:2px 0 0;font-weight:600;font-size:.95rem}

/* Problem / solution */
.compare{display:grid;gap:12px}
.compare-row{display:grid;gap:12px}
@media (min-width:720px){.compare-row{grid-template-columns:1fr 1fr}}
.compare .was,.compare .now{padding:20px 22px;border-radius:var(--r);min-width:0}
.compare .was{background:var(--paper-2);border:1px solid var(--line)}
.compare .now{background:var(--navy);color:#fff;border:1px solid var(--navy)}
.compare h3{font-size:.85rem;letter-spacing:.02em;margin-bottom:8px;color:var(--ink-3)}
.compare .now h3{color:var(--orange)}
.compare p{font-size:.98rem}

/* Steps */
.steps{list-style:none;display:grid;gap:16px;counter-reset:step}
@media (min-width:720px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1040px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.steps li{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;min-width:0}
.step-n{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--navy);color:var(--orange);font-weight:800;margin-bottom:16px}
.steps h3{margin-bottom:8px}
.steps p{color:var(--ink-2);font-size:.95rem}
.inline-cta{margin-top:32px;display:flex;justify-content:center}

/* Capability cards */
.cards{display:grid;gap:16px}
@media (min-width:720px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1040px){.cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;display:grid;gap:12px;align-content:start;min-width:0;transition:border-color .15s,box-shadow .15s}
.card:hover{border-color:var(--line-2);box-shadow:0 10px 30px -18px rgba(15,23,42,.35)}
.card > p{color:var(--ink-2);font-size:.95rem}
.card ul{list-style:none;display:grid;gap:7px;font-size:.92rem;color:var(--ink-2)}
.card ul li{padding-left:18px;position:relative}
.card ul li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:2px;background:var(--orange)}
.card-link{margin-top:auto;font-weight:700;gap:6px;text-decoration:none;color:var(--orange-deep);display:inline-flex;min-height:44px;align-items:center}
.card-link:hover{color:var(--ink);text-decoration:underline}

/* Tabs (industries) */
.tablist{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.tablist [role="tab"]{min-height:44px;padding:8px 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--paper);color:var(--ink-2);font:inherit;font-weight:600;font-size:.92rem;cursor:pointer}
.tablist [role="tab"]:hover{border-color:var(--ink)}
.tablist [role="tab"][aria-selected="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(20px,3vw,32px);display:grid;gap:14px}
.panel p{color:var(--ink-2);max-width:70ch}
.usecases{list-style:none;display:grid;gap:10px;font-size:.95rem;color:var(--ink-2)}
.usecases li{padding-left:18px;position:relative}
.usecases li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--ice-deep)}
.usecases strong{color:var(--ink)}

/* Why */
.why-grid{display:grid;gap:36px}
@media (min-width:960px){.why-grid{grid-template-columns:1fr 1fr;gap:64px;align-items:start}}
.note{margin:24px 0 0;padding:20px 22px;border-left:4px solid var(--orange);background:var(--paper-2);border-radius:0 var(--r) var(--r) 0}
.note p{font-size:1.02rem;color:var(--ink)}
.note footer{margin-top:10px;font-size:.85rem;color:var(--ink-3)}
.diffs{list-style:none;display:grid;gap:0;border-top:1px solid var(--line)}
.diffs li{padding:18px 0;border-bottom:1px solid var(--line)}
.diffs h3{font-size:1.05rem;margin-bottom:4px}
.diffs p{color:var(--ink-2);font-size:.95rem}

/* Calculator */
.calc-grid{display:grid;gap:32px}
@media (min-width:960px){.calc-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:start}}
.calc{margin-top:24px;display:grid;gap:18px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px}
.range label{display:flex;justify-content:space-between;gap:12px;align-items:baseline;font-weight:600;font-size:.92rem;margin-bottom:8px}
.range output{font-variant-numeric:tabular-nums;color:var(--ink)}
input[type="range"]{width:100%;height:44px;accent-color:var(--orange);margin:0}
.results{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:480px){.results{grid-template-columns:1fr}}
.result{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;display:grid;gap:4px;min-width:0}
.result.wide{grid-column:1/-1}
.result .big{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1}
.result .big.accent{color:var(--orange-deep)}
.result .lbl{font-size:.85rem;letter-spacing:.02em;color:var(--ink-3);font-weight:700}
.meter{height:10px;border-radius:999px;background:var(--paper-2);border:1px solid var(--line);overflow:hidden;margin-top:10px}
.meter i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--orange),var(--ice-deep));transition:width .5s ease}
.result .btn{margin-top:14px;justify-self:start}

/* Path */
.path{list-style:none;display:grid;gap:16px}
@media (min-width:860px){.path{grid-template-columns:repeat(3,minmax(0,1fr))}}
.path li{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;min-width:0}
.when{font-size:.85rem;font-weight:700;letter-spacing:.02em;color:var(--orange-deep);margin-bottom:8px}
.path h3{margin-bottom:8px}
.path p:not(.when){color:var(--ink-2);font-size:.95rem}
.roadmap{margin-top:28px;padding:20px 22px;background:var(--paper-2);border-radius:var(--r);border:1px solid var(--line)}
.roadmap h3{font-size:1rem;margin-bottom:6px}
.roadmap p{color:var(--ink-2);font-size:.95rem;max-width:80ch}

/* Trust */
.trust-grid{list-style:none;display:grid;gap:16px}
@media (min-width:720px){.trust-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1040px){.trust-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.trust-grid li{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;min-width:0}
.trust-grid h3{font-size:1.02rem;margin-bottom:8px}
.trust-grid p{color:var(--ink-2);font-size:.93rem}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 4px;font-weight:700;font-size:1.05rem;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--orange-deep);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 4px 20px;color:var(--ink-2);max-width:70ch}

/* Contact */
.contact{background:var(--navy);color:#fff}
.contact .eyebrow{color:var(--orange)}
.contact .lede{color:rgba(255,255,255,.82);margin-top:14px}
.contact-grid{display:grid;gap:36px}
@media (min-width:960px){.contact-grid{grid-template-columns:1fr 1fr;gap:64px;align-items:start}}
.gets{list-style:none;display:grid;gap:10px;margin-top:22px;color:rgba(255,255,255,.88)}
.gets li{padding-left:26px;position:relative}
.gets li::before{content:"✓";position:absolute;left:0;color:var(--ok-dark);font-weight:800}
.contact-alt{margin-top:26px;display:grid;gap:6px;color:rgba(255,255,255,.7);font-size:.95rem}
.contact-alt a{color:#fff;font-weight:600;display:inline-block;padding:10px 0;margin:-10px 0}
.lead{background:var(--paper);color:var(--ink);border-radius:var(--r-lg);padding:clamp(20px,3vw,28px);display:grid;gap:16px}
.field{display:grid;gap:6px}
.field label{font-weight:600;font-size:.92rem}
.field .opt{font-weight:400;color:var(--ink-3)}
.field input:not([type="checkbox"]),.field select,.field textarea{font:inherit;font-size:1rem;color:var(--ink);background:var(--paper);border:1px solid var(--line-2);border-radius:8px;padding:11px 12px;width:100%;min-height:44px}
.field textarea{resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid var(--orange);outline-offset:0;border-color:transparent}
.field[data-invalid] input,.field[data-invalid] select{border-color:var(--err)}
.field.check{grid-template-columns:auto 1fr;align-items:start;gap:10px 10px}
.field.check input{width:24px;height:24px;margin:2px 0 0;accent-color:var(--orange)}
.field.check label{font-weight:500;font-size:.92rem}
.field.check .error{grid-column:1/-1}
.error{color:var(--err);font-size:.85rem;font-weight:600}
.form-status{font-weight:600;min-height:1.5em}
.form-status.ok{color:var(--ok)}
.form-status.err{color:var(--err)}
.lead .fine{color:var(--ink-3)}

/* Footer */
.site-footer{background:var(--navy-2);color:rgba(255,255,255,.8);padding-block:40px 24px;border-top:1px solid rgba(255,255,255,.08)}
.foot-grid{display:grid;gap:28px}
@media (min-width:720px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot-brand p{font-size:.92rem;margin-top:8px;max-width:36ch}
.foot-brand .brand{color:#fff;min-height:44px;padding:10px 0}
.foot-h{font-size:.85rem;letter-spacing:.02em;color:rgba(255,255,255,.55);margin-bottom:10px;font-weight:700}
.site-footer ul{list-style:none;display:grid;gap:4px}
.site-footer li a{color:rgba(255,255,255,.85);text-decoration:none;display:inline-flex;align-items:center;padding:4px 0;min-height:44px}
.site-footer li a:hover{color:#fff;text-decoration:underline}
.foot-base{margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.85rem;color:rgba(255,255,255,.55)}
.totop{color:rgba(255,255,255,.75);font-weight:600;text-decoration:none;min-height:44px;display:inline-flex;align-items:center}
.totop:hover{color:#fff}

/* Secondary pages */
.page{padding-block:clamp(40px,7vw,80px)}
.page .wrap{max-width:820px}
.page h1{font-size:clamp(1.9rem,4.5vw,2.8rem);margin-bottom:14px}
.page h2{font-size:1.35rem;margin:32px 0 10px}
.page p,.page li{color:var(--ink-2)}
.page ul{padding-left:20px;display:grid;gap:6px}
.crumbs{list-style:none;display:flex;gap:8px;font-size:.88rem;color:var(--ink-3);margin-bottom:18px}
.crumbs li+li::before{content:"/";margin-right:8px;color:var(--line-2)}
.center{text-align:center}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .btn:hover{transform:none}
}