:root{
  --gpa-navy:#07345f;
  --gpa-navy-2:#0a2540;
  --gpa-teal:#13a8ad;
  --gpa-teal-2:#0b7f86;
  --gpa-sky:#eefbfc;
  --gpa-soft:#f7fbfd;
  --gpa-ink:#102033;
  --gpa-muted:#5d6d7e;
  --gpa-line:rgba(7,52,95,.12);
  --gpa-shadow:0 18px 50px rgba(10,37,64,.09);
  --gpa-shadow-sm:0 10px 28px rgba(10,37,64,.06);
  --gpa-radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--gpa-ink);
  line-height:1.65;
  background:#fff;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--gpa-teal-2)}
a:hover{color:var(--gpa-navy)}
img{max-width:100%;height:auto}
.container{max-width:1180px}

/* Header / Navigation */
.navbar{
  min-height:78px;
  background:rgba(255,255,255,.96)!important;
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--gpa-line)!important;
  box-shadow:0 8px 30px rgba(10,37,64,.045);
}
.navbar-brand{padding:0;margin-right:1.5rem}
.brand-logo{
  width:210px;
  max-width:210px;
  height:auto;
  display:block;
  object-fit:contain;
}
.navbar-toggler{border-color:rgba(7,52,95,.16);padding:.5rem .65rem}
.navbar-toggler:focus{box-shadow:0 0 0 .2rem rgba(19,168,173,.18)}
.nav-link{
  color:var(--gpa-navy)!important;
  font-weight:750;
  font-size:.96rem;
  padding:.65rem .85rem!important;
  border-radius:999px;
}
.nav-link:hover,.nav-link.active{
  color:var(--gpa-teal-2)!important;
  background:rgba(19,168,173,.08);
}

/* Hero */
.hero-section,.page-hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(circle at 88% 12%, rgba(19,168,173,.20), transparent 32%),
    radial-gradient(circle at 12% 18%, rgba(7,52,95,.08), transparent 28%),
    linear-gradient(135deg,#ffffff 0%,#f6fcff 58%,#edfafd 100%);
  border-bottom:1px solid var(--gpa-line);
}
.hero-section{padding:88px 0 76px}
.page-hero{padding:70px 0 54px}
.hero-section:after,.page-hero:after{
  content:"";
  position:absolute;
  inset:auto -8% -44% auto;
  width:520px;height:520px;
  border-radius:50%;
  background:rgba(19,168,173,.08);
  pointer-events:none;
}
.eyebrow,.section-label,.resource-kicker{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  margin-bottom:.9rem;
  color:var(--gpa-teal-2);
  text-transform:uppercase;
  letter-spacing:.13em;
  font-size:.76rem;
  font-weight:850;
}
.eyebrow:before,.section-label:before,.resource-kicker:before{
  content:"";
  width:24px;height:2px;
  background:var(--gpa-teal);
  border-radius:99px;
}
.hero-section h1,.page-hero h1{
  margin:0;
  color:var(--gpa-navy-2);
  font-size:clamp(2.45rem,5vw,4.7rem);
  line-height:1.02;
  letter-spacing:-.055em;
  font-weight:900;
}
.page-hero h1{font-size:clamp(2.2rem,4.5vw,4rem)}
.hero-copy,.lead,.page-hero p{
  color:var(--gpa-muted);
  font-size:1.12rem;
}
.hero-copy{max-width:710px;margin-top:1.2rem;font-size:1.22rem}
.hero-card{
  position:relative;
  background:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.9);
  border-radius:32px;
  padding:2rem;
  box-shadow:var(--gpa-shadow);
}
.hero-card:before{
  content:"";
  position:absolute;
  inset:12px;
  border:1px solid rgba(19,168,173,.14);
  border-radius:24px;
  pointer-events:none;
}
.hero-card img{position:relative;border-radius:18px;background:#fff;padding:.75rem;box-shadow:var(--gpa-shadow-sm)}
.search-preview{
  position:relative;
  border:1px solid rgba(19,168,173,.22);
  border-radius:18px;
  padding:1rem 1.1rem;
  background:var(--gpa-sky);
}
.search-preview span{display:block;color:var(--gpa-muted);font-size:.88rem;font-weight:650}
.search-preview strong{display:block;color:var(--gpa-navy);font-size:1rem;line-height:1.45}

/* Buttons */
.btn{border-radius:999px;font-weight:800;padding:.82rem 1.18rem}
.btn-lg{padding:.95rem 1.35rem;font-size:1rem}
.btn-primary{
  background:var(--gpa-teal);
  border-color:var(--gpa-teal);
  box-shadow:0 14px 30px rgba(19,168,173,.22);
}
.btn-primary:hover,.btn-primary:focus{background:var(--gpa-teal-2);border-color:var(--gpa-teal-2)}
.btn-outline-primary{color:var(--gpa-navy);border-color:rgba(7,52,95,.38);background:#fff}
.btn-outline-primary:hover,.btn-outline-primary:focus{background:var(--gpa-navy);border-color:var(--gpa-navy);color:#fff}

/* Layout */
.section-padding{padding:82px 0}
.bg-light-blue{background:linear-gradient(180deg,var(--gpa-sky),#fff)}
h2{
  color:var(--gpa-navy-2);
  font-weight:900;
  letter-spacing:-.04em;
  font-size:clamp(2rem,3.4vw,3rem);
  line-height:1.08;
}
h3,h4{color:var(--gpa-navy);font-weight:850;letter-spacing:-.02em}
.text-muted{color:var(--gpa-muted)!important}

/* Cards */
.info-card,.topic-card,.tool-box,.content-card,.resource-card,.calculator-panel{
  height:100%;
  background:#fff;
  border:1px solid var(--gpa-line);
  border-radius:var(--gpa-radius);
  box-shadow:var(--gpa-shadow-sm);
}
.info-card,.topic-card,.content-card,.resource-card,.calculator-panel{padding:1.55rem}
.content-card,.topic-card,.resource-card{
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
a .content-card:hover,a .topic-card:hover,.resource-card:hover{
  transform:translateY(-3px);
  border-color:rgba(19,168,173,.35);
  box-shadow:var(--gpa-shadow);
}
.info-card h3,.topic-card h3,.content-card h3{font-size:1.18rem;margin-bottom:.55rem}
.info-card p,.topic-card p,.content-card p,.content-card li,.calculator-panel p{color:var(--gpa-muted)}
.content-card h2{font-size:1.65rem;letter-spacing:-.025em}
.content-card ul{margin-bottom:0}
.tool-box{
  padding:1.25rem 1.35rem;
  color:var(--gpa-navy);
  font-weight:850;
  border-left:6px solid var(--gpa-teal);
}
.resource-card{border-color:rgba(19,168,173,.18);background:linear-gradient(135deg,#fff 0%,#f6fdff 100%)}
.resource-card a{font-weight:850;text-decoration:none}

/* Page content helpers */
.breadcrumb-link{color:var(--gpa-teal-2);font-weight:800;text-decoration:none}
.breadcrumb-link:hover{text-decoration:underline}
.check-list{list-style:none;padding-left:0;margin-bottom:0}
.check-list li{padding:.58rem 0 .58rem 2rem;position:relative;color:var(--gpa-muted)}
.check-list li:before{
  content:"✓";
  position:absolute;left:0;top:.58rem;
  width:22px;height:22px;line-height:22px;text-align:center;
  border-radius:50%;
  color:#fff;background:var(--gpa-teal);
  font-size:.78rem;font-weight:900;
}
.keyword-pill{
  display:inline-block;
  margin:.25rem .18rem;
  padding:.45rem .78rem;
  border:1px solid rgba(19,168,173,.28);
  border-radius:999px;
  color:var(--gpa-navy);
  background:var(--gpa-sky);
  font-weight:800;
  font-size:.9rem;
  text-decoration:none;
}
.disclaimer-box{
  background:#fff8e6;
  border:1px solid #ffdd93;
  border-radius:20px;
  padding:1.05rem 1.2rem;
  color:#644909;
}
.table-clean{border-color:var(--gpa-line)}
.table-clean th{color:var(--gpa-navy);font-weight:850;background:#f8fcfd}
.table-clean td{color:var(--gpa-muted)}
.mini-cta{
  background:linear-gradient(135deg,#f1fbfd,#fff);
  border:1px solid rgba(19,168,173,.18);
  border-radius:24px;
  padding:2rem;
}
.article-meta{color:var(--gpa-muted);font-size:.94rem}

/* Calculators */
.calculator-panel label{font-weight:750;color:var(--gpa-navy)}
.form-control,.form-select{border-radius:14px;border-color:rgba(7,52,95,.18);padding:.75rem .9rem}
.form-control:focus,.form-select:focus{border-color:var(--gpa-teal);box-shadow:0 0 0 .2rem rgba(19,168,173,.16)}
.calc-output{
  background:var(--gpa-sky);
  border:1px solid rgba(19,168,173,.18);
  border-radius:16px;
  padding:1rem;
  color:var(--gpa-navy);
  font-weight:850;
}

/* CTA / Footer */
.cta-section{padding:50px 0}
.cta-box{
  background:
    radial-gradient(circle at top right,rgba(255,255,255,.18),transparent 28%),
    linear-gradient(135deg,var(--gpa-navy-2),var(--gpa-teal-2));
  color:#fff;
  border-radius:32px;
  padding:clamp(2.2rem,5vw,4.3rem);
  box-shadow:0 24px 58px rgba(7,52,95,.24);
}
.cta-box h2{color:#fff}
.cta-box p{color:rgba(255,255,255,.84);max-width:780px;margin:1rem auto 1.65rem}
.accordion-item{border-color:var(--gpa-line);border-radius:18px!important;overflow:hidden;margin-bottom:.8rem}
.accordion-button{font-weight:800;color:var(--gpa-navy);padding:1rem 1.15rem}
.accordion-button:not(.collapsed){background:var(--gpa-sky);color:var(--gpa-navy-2)}
.accordion-button:focus{box-shadow:0 0 0 .2rem rgba(19,168,173,.16)}
.footer{
  padding:34px 0;
  background:var(--gpa-navy-2);
  color:rgba(255,255,255,.76);
}
.footer strong{color:#fff}
.footer a{color:#fff;text-decoration:none;font-weight:750;margin-left:.72rem}
.footer a:hover{color:#9cf1f4}
.footer .resource-note{color:rgba(255,255,255,.6);font-size:.9rem;margin-top:.25rem}

@media(max-width:991px){
  .navbar{min-height:72px}.brand-logo{width:188px;max-width:188px}.navbar-collapse{padding:1rem 0}.nav-link{border-radius:12px}.hero-section{padding:62px 0}.hero-card{padding:1.35rem}.section-padding{padding:62px 0}
}
@media(max-width:575px){
  .brand-logo{width:170px;max-width:170px}.hero-section h1,.page-hero h1{letter-spacing:-.04em}.hero-copy,.lead,.page-hero p{font-size:1.02rem}.d-flex .btn{width:100%}.footer a{margin:0 .65rem .4rem 0;display:inline-block}.footer{text-align:left}
}


/* Expanded authority site helpers */
.page-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem}.link-card{display:block;height:100%;background:#fff;border:1px solid var(--gpa-line);border-radius:22px;padding:1.35rem;text-decoration:none;box-shadow:var(--gpa-shadow-sm);transition:.18s ease}.link-card:hover{transform:translateY(-3px);box-shadow:var(--gpa-shadow);border-color:rgba(19,168,173,.32)}.link-card h3{font-size:1.1rem;color:var(--gpa-navy);font-weight:850;margin-bottom:.45rem}.link-card p{color:var(--gpa-muted);margin:0}.article-body h2{margin-top:2rem}.article-body h3{margin-top:1.5rem}.article-body p,.article-body li{color:var(--gpa-muted)}.toc-box{position:sticky;top:96px}.quiet-link{font-weight:800;text-decoration:none}.badge-soft{background:var(--gpa-sky);color:var(--gpa-navy);border:1px solid rgba(19,168,173,.22);border-radius:99px;padding:.4rem .65rem;font-weight:750;font-size:.85rem;display:inline-block;margin:.2rem}.comparison-table td,.comparison-table th{vertical-align:top}.sponsor-strip{background:#fff;border:1px solid var(--gpa-line);border-left:5px solid var(--gpa-teal);border-radius:20px;padding:1rem 1.15rem;color:var(--gpa-muted)}

/* Reconstitution calculator feature */
.calculator-feature{padding:clamp(1.4rem,3vw,2.25rem)}
.calc-title{font-size:clamp(2rem,3.5vw,3.15rem);letter-spacing:-.045em;color:var(--gpa-navy-2)}
.input-group-text{border-color:rgba(7,52,95,.18);background:#f8fcfd;color:var(--gpa-navy);font-weight:850;border-radius:14px}
.input-group-lg>.form-control,.input-group-lg>.form-select,.input-group-lg>.input-group-text{font-size:1rem;padding:.86rem .95rem}
.calc-unit-select{max-width:105px;font-weight:850;color:var(--gpa-navy)}
.quick-buttons{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.6rem}
.quick-buttons button{border:1px solid rgba(19,168,173,.25);background:var(--gpa-sky);color:var(--gpa-navy);border-radius:999px;padding:.35rem .65rem;font-size:.84rem;font-weight:850;line-height:1;transition:.16s ease}
.quick-buttons button:hover,.quick-buttons button:focus{background:var(--gpa-teal);border-color:var(--gpa-teal);color:#fff;outline:none}
.calc-alert{display:none;border-radius:16px;padding:.9rem 1rem;font-weight:750;background:#fff8e6;border:1px solid #ffdd93;color:#644909}
.calc-alert.show{display:block}
.calc-results-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.calc-result-card{border:1px solid var(--gpa-line);background:linear-gradient(180deg,#fff,#f8fcfd);border-radius:20px;padding:1.15rem;box-shadow:var(--gpa-shadow-sm)}
.calc-result-card.primary{background:linear-gradient(135deg,var(--gpa-navy-2),var(--gpa-teal-2));border-color:transparent;color:#fff;box-shadow:0 18px 36px rgba(7,52,95,.18)}
.calc-result-card span{display:block;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;font-weight:900;color:var(--gpa-muted);margin-bottom:.25rem}
.calc-result-card.primary span{color:rgba(255,255,255,.75)}
.calc-result-card strong{display:block;color:var(--gpa-navy-2);font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.05;letter-spacing:-.04em;font-weight:950}
.calc-result-card.primary strong{color:#fff}
.calc-result-card small{display:block;color:var(--gpa-muted);font-weight:750;margin-top:.3rem}
.calc-result-card.primary small{color:rgba(255,255,255,.75)}
.formula-box{background:var(--gpa-sky);border:1px solid rgba(19,168,173,.20);border-radius:18px;padding:1rem;color:var(--gpa-navy)}
.formula-box div+div{border-top:1px solid rgba(7,52,95,.09);margin-top:.7rem;padding-top:.7rem}
@media(max-width:575px){.calc-results-grid{grid-template-columns:1fr}.calc-unit-select{max-width:95px}.input-group-lg>.form-control,.input-group-lg>.form-select,.input-group-lg>.input-group-text{font-size:.95rem}}