/* ============================================================================
   BETOSIM Ltd - design system
   Art direction locked by the approved homepage mockup (betosim-com-home-mockup).
   Deep-navy engineering darkness / thin steel rules / generous whitespace /
   strata + wellbore motifs / restrained motion / data as instrument readouts.
   ========================================================================== */

:root{
  /* brand tokens */
  --navy:#061D30;
  --navy-deep:#04121f;
  --navy-ink:#030b14;
  --navy-raise:#0a2233;
  --steel:#8C98A4;
  --steel-dim:#7A8794;          /* text-safe dim steel - AA on navy-ink and navy */
  --light:#EEF1F5;
  --paper:#ffffff;
  --accent:#7FA6C9;             /* on dark */
  --accent-ink:#38536e;         /* on light */
  --body-on-light:#45566b;
  --line:rgba(140,152,164,.18);
  --line-strong:rgba(140,152,164,.32);
  --line-ink:rgba(6,29,48,.12);
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --display:'Poppins',system-ui,-apple-system,'Segoe UI',sans-serif;
  --gutter:6vw;
  --maxw:1200px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--navy-ink);color:var(--light);
  font-family:var(--sans);font-weight:300;line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,.wordmark,.display{font-family:var(--display)}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
.mono{font-family:var(--mono)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
::selection{background:var(--accent);color:var(--navy-ink)}

/* focus visibility - WCAG AA */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;border-radius:1px;
}
.license a:focus-visible,.license button:focus-visible,
.license input:focus-visible,.license select:focus-visible,
.license textarea:focus-visible{outline-color:var(--accent-ink)}

.skip{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--light);color:var(--navy-ink);padding:14px 22px;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
}
.skip:focus{left:var(--gutter)}

.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;
}

/* ---------- grain ---------------------------------------------------------- */
body::after{
  content:'';position:fixed;inset:0;pointer-events:none;opacity:.035;z-index:3;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ---------- navigation ------------------------------------------------------ */
nav.site{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px var(--gutter);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:linear-gradient(to bottom,rgba(3,11,20,.88),rgba(3,11,20,.6));
  border-bottom:1px solid var(--line);
}
/* Brand lockup - the real logo, reversed variant on the dark ground.   */
/* Sources: assets/img/logo-reversed*.png, keyed from the master EN logo. */
.wordmark{display:flex;align-items:flex-start;gap:3px;flex:0 0 auto}
.wordmark .wm-img{height:26px;width:auto;display:block}
.wordmark .tm{font-family:var(--display);font-size:9px;font-weight:700;color:var(--steel);margin-top:1px;letter-spacing:0}
.hero-logo{margin-top:66px;width:min(340px,72vw);height:auto;display:block}
.foot-logo{width:210px;height:auto;display:block}
.lic-logo{width:min(250px,58vw);height:auto;display:block;margin-bottom:40px}

.navlinks{display:flex;gap:34px;font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--steel)}
.navlinks a{transition:color .25s;padding:4px 0;border-bottom:1px solid transparent;white-space:nowrap}
.navlinks a:hover{color:var(--light)}
/* the drawer CTA duplicates the header CTA; it belongs to the mobile drawer only */
.navlinks .drawer-cta{display:none}
body[data-page="technology"]  .navlinks a[data-nav="technology"],
body[data-page="systems"]     .navlinks a[data-nav="systems"],
body[data-page="concrete"]    .navlinks a[data-nav="concrete"],
body[data-page="licensing"]   .navlinks a[data-nav="licensing"],
body[data-page="sustainability"] .navlinks a[data-nav="sustainability"],
body[data-page="about"]       .navlinks a[data-nav="about"]{
  color:var(--light);border-bottom-color:var(--accent);
}
.nav-cta{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  border:1px solid var(--steel-dim);padding:10px 22px;transition:.3s;flex:0 0 auto;white-space:nowrap;
}
.nav-cta:hover{background:var(--light);color:var(--navy-ink);border-color:var(--light)}

/* mobile drawer */
.nav-toggle{
  display:none;background:none;border:1px solid var(--steel-dim);
  width:44px;height:40px;cursor:pointer;position:relative;flex:0 0 auto;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:1px;background:var(--light);
  transition:transform .3s,opacity .2s;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:19.5px}
.nav-toggle span:nth-child(3){top:25px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

@media(max-width:1080px){
  .wordmark .wm-img{height:23px}
  .navlinks{gap:24px;font-size:11.5px;letter-spacing:.14em}
}
@media(max-width:960px){
  .nav-toggle{display:block}
  nav.site > .nav-cta{display:none}
  /* Anchored to the bar itself (nav.site is fixed, so this is its containing
     block) — the bar's height varies with the viewport, so a fixed top offset
     would overlap it. */
  .navlinks{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;gap:0;
    background:var(--navy-deep);border-bottom:1px solid var(--line);
    padding:8px var(--gutter) 26px;
    max-height:78vh;overflow-y:auto;
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .navlinks a{padding:17px 0;border-bottom:1px solid var(--line);font-size:13px;letter-spacing:.2em;white-space:normal}
  .navlinks.open{transform:none;opacity:1;visibility:visible}
  .navlinks .drawer-cta{
    display:block;margin-top:20px;border:1px solid var(--steel-dim);text-align:center;
    padding:15px 0;color:var(--light);
  }
}

/* ---------- hero ------------------------------------------------------------ */
header.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:radial-gradient(1200px 700px at 75% 20%,#0a2740 0%,var(--navy-deep) 55%,var(--navy-ink) 100%);
}
header.hero.compact{min-height:auto}
.depth-rule{
  position:absolute;left:0;top:0;bottom:0;width:64px;border-right:1px solid var(--line);
  display:flex;flex-direction:column;justify-content:space-between;padding:110px 0 40px;z-index:2;
}
.depth-rule span{
  font-family:var(--mono);font-size:9.5px;color:var(--steel-dim);letter-spacing:.08em;
  transform:rotate(-90deg);white-space:nowrap;
}
@media(max-width:960px){.depth-rule{display:none}}

.hero-inner{position:relative;z-index:2;padding:140px var(--gutter) 90px;max-width:var(--maxw);margin:0 auto;width:100%}
header.hero.compact .hero-inner{padding:190px var(--gutter) 110px}

.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--accent);margin-bottom:34px;display:flex;align-items:center;gap:16px;
}
.kicker::before{content:'';width:46px;height:1px;background:var(--accent);flex:0 0 auto}

h1{font-size:clamp(40px,7vw,92px);font-weight:700;line-height:1.04;letter-spacing:-.015em;max-width:14ch}
h1 em{font-style:normal;color:var(--steel)}
header.hero.compact h1{font-size:clamp(34px,5.4vw,68px);max-width:17ch}

.hero-sub{margin-top:36px;max-width:600px;font-size:17px;color:var(--steel);font-weight:300}
.hero-sub b{color:var(--light);font-weight:500}
.hero-ctas{margin-top:52px;display:flex;gap:22px;flex-wrap:wrap}

.btn{
  display:inline-block;padding:17px 36px;font-size:12.5px;letter-spacing:.2em;
  text-transform:uppercase;font-weight:500;transition:.3s;border:1px solid transparent;
  cursor:pointer;font-family:var(--sans);text-align:center;
}
.btn-solid{background:var(--light);color:var(--navy-ink)}
.btn-solid:hover{background:var(--accent)}
.btn-ghost{border-color:var(--steel-dim);color:var(--light);background:none}
.btn-ghost:hover{border-color:var(--light)}
.btn[disabled]{opacity:.5;cursor:not-allowed}

.tagline{
  margin-top:70px;font-family:var(--mono);font-size:11.5px;letter-spacing:.3em;
  color:var(--steel-dim);text-transform:uppercase;
}
.tagline b{color:var(--steel);font-weight:500}

/* wellbore motif */
.wellbore{position:absolute;right:7vw;top:0;bottom:0;width:230px;z-index:1;opacity:.9}
@media(max-width:1100px){.wellbore{opacity:.22}}
.wellbore svg{height:100%;width:100%}
.draw{stroke-dasharray:1600;stroke-dashoffset:1600;animation:draw 3.2s ease forwards .4s}
.draw2{stroke-dasharray:1600;stroke-dashoffset:1600;animation:draw 3.2s ease forwards .9s}
@keyframes draw{to{stroke-dashoffset:0}}
.pulse{animation:pulse 4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:.9}}

/* ---------- strata divider -------------------------------------------------- */
.strata{height:120px;position:relative;overflow:hidden;background:var(--navy-ink)}
.strata svg{position:absolute;inset:0;width:100%;height:100%}

/* ---------- sections -------------------------------------------------------- */
section{position:relative;padding:120px 0}
@media(max-width:700px){section{padding:84px 0}}

.sec-label{
  font-family:var(--mono);font-size:11px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--accent);margin-bottom:26px;display:flex;align-items:center;gap:14px;
}
.sec-label::before{content:'';width:34px;height:1px;background:var(--accent);flex:0 0 auto}

h2{font-size:clamp(28px,4vw,52px);font-weight:600;line-height:1.12;letter-spacing:-.01em;max-width:20ch}
h3{font-weight:600}
.lede{margin-top:26px;max-width:660px;color:var(--steel);font-size:16.5px}
.lede b{color:var(--light);font-weight:500}
.lede + .lede{margin-top:20px}

/* generic prose for content-heavy pages */
.prose{max-width:720px;color:var(--steel);font-size:16px}
.prose > * + *{margin-top:22px}
.prose h2,.prose h3{color:var(--light);font-size:21px;margin-top:46px;font-family:var(--display);letter-spacing:0;max-width:none;line-height:1.4;font-weight:600}
.prose b,.prose strong{color:var(--light);font-weight:500}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin-top:10px}
.prose li::marker{color:var(--accent)}
.prose a{color:var(--accent);border-bottom:1px solid rgba(127,166,201,.4)}

/* ---------- doctrine / step grid -------------------------------------------- */
.doctrine{background:linear-gradient(180deg,var(--navy-ink),var(--navy-deep))}
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  margin-top:70px;border:1px solid var(--line);
}
.step{background:var(--navy-deep);padding:42px 34px;transition:background .3s}
.step:hover{background:var(--navy-raise)}
.step .n{font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.25em}
.step h3{margin:18px 0 12px;font-size:19px}
.step p{font-size:14px;color:var(--steel)}
@media(max-width:860px){.steps{grid-template-columns:1fr}}

/* ---------- cards ------------------------------------------------------------ */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:70px}
@media(max-width:860px){.grid{grid-template-columns:1fr}}
.card{
  border:1px solid var(--line);padding:44px 40px;position:relative;
  background:linear-gradient(160deg,rgba(10,34,51,.45),rgba(4,18,31,.2));
  transition:transform .35s,border-color .35s;overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:rgba(127,166,201,.5)}
.card .code{font-family:var(--mono);font-size:11px;letter-spacing:.28em;color:var(--accent)}
.card h3{margin:14px 0 4px;font-size:24px}
.card .fn{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel-dim);margin-bottom:16px}
.card p{font-size:14.5px;color:var(--steel)}
.card p + p{margin-top:14px}
.card .glyph{position:absolute;right:26px;top:34px;width:44px;height:44px;opacity:.75}
.card .more{
  display:inline-block;margin-top:22px;font-family:var(--mono);font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--accent);
  border-bottom:1px solid rgba(127,166,201,.4);
}
@media(max-width:520px){.card{padding:34px 26px}.card .glyph{display:none}}

.conc{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
@media(max-width:860px){.conc{grid-template-columns:1fr}}
.conc .card h3{font-size:19px}

/* system detail block (Systems page) */
.system{
  border-top:1px solid var(--line);padding-top:52px;margin-top:76px;
  display:grid;grid-template-columns:280px 1fr;gap:60px;
}
@media(max-width:900px){.system{grid-template-columns:1fr;gap:32px}}
.system .sys-id .code{font-family:var(--mono);font-size:11px;letter-spacing:.28em;color:var(--accent)}
.system .sys-id h3{font-size:30px;margin:12px 0 8px;line-height:1.15}
.system .sys-id .fn{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel-dim)}
.system .sys-id svg{margin-top:26px;width:56px;height:56px;opacity:.8}
.pmo{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.pmo > div{background:var(--navy-deep);padding:28px 30px}
.pmo .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.pmo p{font-size:14.5px;color:var(--steel)}
.sys-note{
  margin-top:22px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--steel-dim);line-height:1.9;
}

/* ---------- evidence / readouts --------------------------------------------- */
.evidence{background:var(--navy);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.readouts{
  display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);margin-top:64px;
}
.readouts.two{grid-template-columns:repeat(2,1fr);max-width:760px}
@media(max-width:1000px){.readouts{grid-template-columns:repeat(2,1fr)}}
@media(max-width:420px){.readouts,.readouts.two{grid-template-columns:1fr}}
.readout{background:var(--navy);padding:34px 26px}
.readout .v{font-family:var(--mono);font-size:clamp(24px,2.6vw,34px);font-weight:500;color:var(--light);line-height:1.2}
.readout .v small{font-size:.45em;color:var(--accent);letter-spacing:.1em}
.readout .k{margin-top:10px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--steel-dim)}
.bar{height:2px;background:rgba(140,152,164,.2);margin-top:16px;position:relative;overflow:hidden}
.bar i{position:absolute;left:0;top:0;bottom:0;background:var(--accent);width:0;transition:width 1.6s cubic-bezier(.2,.8,.2,1)}
.vis .bar i{width:var(--w)}
.provenance{
  margin-top:30px;font-family:var(--mono);font-size:11.5px;color:var(--steel-dim);
  max-width:760px;line-height:1.9;text-transform:uppercase;letter-spacing:.06em;
}
.provenance a{color:var(--accent);border-bottom:1px solid rgba(127,166,201,.4)}

/* ---------- transition band -------------------------------------------------- */
.band{background:linear-gradient(180deg,var(--navy-deep),var(--navy-ink))}
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:64px}
@media(max-width:860px){.trio{grid-template-columns:1fr}}
.trio .t{border-top:1px solid var(--line);padding-top:28px}
.trio .t h3{font-size:18px;margin-bottom:10px}
.trio .t p{font-size:14px;color:var(--steel)}
.trio .t p + p{margin-top:12px}
.trio .t .mono{font-size:10.5px;letter-spacing:.25em;color:var(--accent);text-transform:uppercase;display:block;margin-bottom:12px}
.quad{grid-template-columns:repeat(4,1fr)}
@media(max-width:1000px){.quad{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.quad{grid-template-columns:1fr}}

/* ---------- light sections --------------------------------------------------- */
.license{background:var(--light);color:var(--navy-ink)}
.license .sec-label{color:var(--accent-ink)}
.license .sec-label::before{background:var(--accent-ink)}
.license h2,.license h3{color:var(--navy)}
.license .lede,.license p{color:var(--body-on-light)}
.license .lede b,.license strong{color:var(--navy)}
.license .prose{color:var(--body-on-light)}
.license .prose h2,.license .prose h3{color:var(--navy)}
.license .prose a{color:var(--accent-ink);border-bottom-color:rgba(56,83,110,.4)}
.license .prose li::marker{color:var(--accent-ink)}
.lic-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-ink);
  border:1px solid var(--line-ink);margin-top:64px;
}
.lic-grid.two{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.lic-grid,.lic-grid.two{grid-template-columns:1fr}}
.lic{background:var(--light);padding:42px 36px}
.lic .n{font-family:var(--mono);font-size:11px;letter-spacing:.25em;color:var(--accent-ink)}
.lic h3{margin:16px 0 10px;font-size:19px;color:var(--navy)}
.lic p{font-size:14px;color:var(--body-on-light)}
.license .btn-solid{background:var(--navy);color:var(--light);margin-top:56px}
.license .btn-solid:hover{background:#0a2740}
.license .btn-ghost{border-color:rgba(6,29,48,.35);color:var(--navy);margin-top:56px}
.license .btn-ghost:hover{border-color:var(--navy)}

/* qualification path */
.path{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-ink);border:1px solid var(--line-ink);margin-top:60px}
@media(max-width:900px){.path{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.path{grid-template-columns:1fr}}
.path .stage{background:var(--light);padding:36px 30px}
.path .stage .n{font-family:var(--mono);font-size:11px;letter-spacing:.25em;color:var(--accent-ink)}
.path .stage h3{margin:14px 0 10px;font-size:17px;color:var(--navy)}
.path .stage p{font-size:13.5px;color:var(--body-on-light)}

/* ---------- definition / spec list ------------------------------------------- */
.speclist{margin-top:56px;border-top:1px solid var(--line)}
.speclist .row{
  display:grid;grid-template-columns:270px 1fr;gap:40px;
  padding:30px 0;border-bottom:1px solid var(--line);
}
@media(max-width:800px){.speclist .row{grid-template-columns:1fr;gap:12px}}
.speclist dt{
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);
}
.speclist dd{font-size:15px;color:var(--steel)}
.speclist dd b{color:var(--light);font-weight:500}
.license .speclist{border-top-color:var(--line-ink)}
.license .speclist .row{border-bottom-color:var(--line-ink)}
.license .speclist dt{color:var(--accent-ink)}
.license .speclist dd{color:var(--body-on-light)}
.license .speclist dd b{color:var(--navy)}

/* ---------- footprint + footer ----------------------------------------------- */
.footprint{padding:70px 0;border-top:1px solid var(--line)}
.fp{display:flex;gap:9vw;flex-wrap:wrap;margin-top:16px;row-gap:34px}
.fp div b{display:block;font-family:var(--display);font-weight:600;font-size:16px;color:var(--light);letter-spacing:.04em}
.fp div span{font-size:12px;color:var(--steel-dim);letter-spacing:.12em;text-transform:uppercase}

footer.site{
  padding:64px var(--gutter) 56px;border-top:1px solid var(--line);
  color:var(--steel-dim);font-size:12.5px;
}
.foot-grid{
  max-width:var(--maxw);margin:0 auto;display:grid;
  grid-template-columns:1.3fr 1fr 1fr;gap:50px;
}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr;gap:40px}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h2{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;
  color:var(--steel);margin-bottom:20px;font-weight:400;
}
.foot-grid ul{list-style:none;display:grid;gap:12px}
.foot-grid a:hover{color:var(--light)}
footer.site .mono{font-size:10.5px;letter-spacing:.2em}
.foot-legal{
  max-width:var(--maxw);margin:56px auto 0;padding-top:28px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:26px;flex-wrap:wrap;font-size:11.5px;line-height:1.9;
}
.foot-legal .links{display:flex;gap:26px;flex-wrap:wrap}
.foot-legal a:hover{color:var(--light)}

/* ---------- forms ------------------------------------------------------------ */
.form{margin-top:56px;max-width:720px}
.field{margin-bottom:30px}
.field label{
  display:block;font-family:var(--mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--accent);margin-bottom:12px;
}
.field .opt{color:var(--steel-dim)}
.field input,.field select,.field textarea{
  width:100%;background:rgba(10,34,51,.4);border:1px solid var(--line-strong);
  color:var(--light);font-family:var(--sans);font-size:15px;font-weight:300;
  padding:15px 18px;transition:border-color .25s,background .25s;border-radius:0;
}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--steel-dim)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);background:rgba(10,34,51,.7)}
.field textarea{min-height:150px;resize:vertical;line-height:1.7}
.field select{
  appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%238C98A4' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 18px center;padding-right:46px;
}
.field select option{background:var(--navy-deep);color:var(--light)}
.field .hint{margin-top:10px;font-size:12.5px;color:var(--steel-dim);line-height:1.7}
.field-2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:640px){.field-2{grid-template-columns:1fr}}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

.consent{display:flex;gap:14px;align-items:flex-start;margin:38px 0 30px}
.consent input[type=checkbox]{
  width:18px;height:18px;flex:0 0 auto;margin-top:3px;accent-color:var(--accent);cursor:pointer;
}
.consent label{
  font-family:var(--sans);font-size:13.5px;letter-spacing:0;text-transform:none;
  color:var(--steel);margin:0;line-height:1.7;
}
.consent a{color:var(--accent);border-bottom:1px solid rgba(127,166,201,.4)}

.form-status{
  margin-top:26px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;line-height:1.8;
  padding:16px 20px;border:1px solid var(--line-strong);display:none;
}
.form-status.show{display:block}
.form-status.ok{border-color:rgba(127,166,201,.6);color:var(--light)}
.form-status.err{border-color:#a35b5b;color:#e2b4b4}

.form-aside{border-left:1px solid var(--line);padding-left:34px;margin-top:8px}
@media(max-width:900px){
  .form-aside{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:34px;margin-top:44px}
}
.contact-cols{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;align-items:start}
@media(max-width:900px){.contact-cols{grid-template-columns:1fr;gap:0}}

/* ---------- callout ---------------------------------------------------------- */
.callout{
  margin-top:64px;border:1px solid var(--line);border-left:2px solid var(--accent);
  padding:38px 40px;background:rgba(10,34,51,.3);max-width:820px;
}
.callout h3{font-size:19px;margin-bottom:12px}
.callout p{font-size:14.5px;color:var(--steel)}
.callout p + p{margin-top:14px}
.callout .btn{margin-top:26px}
@media(max-width:520px){.callout{padding:30px 26px}}

/* ---------- reveal on scroll -------------------------------------------------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s ease,transform .9s ease}
.rv.vis{opacity:1;transform:none}
.no-js .rv{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .rv{opacity:1;transform:none}
  .draw,.draw2{stroke-dashoffset:0}
}

/* ---------- print ------------------------------------------------------------- */
@media print{
  body{background:#fff;color:#000}
  nav.site,.wellbore,.depth-rule,body::after,.strata{display:none}
  header.hero{min-height:auto;background:none}
  .rv{opacity:1;transform:none}
}