:root {
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --border: #e5e7eb;
  --brand: #24324C;
  --brand-2: #111827;
  --card: #ffffff;
  --muted: #475569;
  --text: #0f172a;
  --radius: 16px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

/* =========================================================
   BASE
========================================================= */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.5;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* =========================================================
   LAYOUT
========================================================= */
.container {
  margin: 0 auto;
  width: min(1120px, calc(100% - 40px));
}

section[id] {
  scroll-margin-top: 90px;
}

:target {
  scroll-margin-top: 90px;
}

/* =========================================================
   HEADER
========================================================= */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 14px 0;
}

.header-inner {
  align-items: center;
  display: flex;
  flex-wrap: nowrap;
  gap: 28px;
  justify-content: space-between;
  min-height: 64px;
}

.brand {
  flex: 0 0 auto;
}

.brand-logo {
  display: block;
  height: 58px;
  max-width: 178px;
  width: auto;
}

.nav {
  align-items: center;
  display: flex;
  flex: 1 1 auto;
  gap: 22px;
  justify-content: flex-end;
  white-space: nowrap;
}

.nav a {
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  opacity: 0.95;
}

.nav a:hover {
  opacity: 1;
  text-decoration: none;
}

.nav-cta {
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--brand) !important;
  font-weight: 600;
  margin-left: 6px;
  padding: 8px 16px;
}

.nav-cta:hover {
  background: #f8fafc;
}

.nav-toggle {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  display: none;
  padding: 10px 12px;
}

/* =========================================================
   HERO
========================================================= */
.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
  border-bottom: 1px solid var(--border);
  padding: 72px 0 40px;
}

.hero-inner {
  align-items: center;
  display: grid;
  gap: 48px;
  grid-template-columns: 1.05fr 0.95fr;
}

.hero-text {
  max-width: 560px;
  padding-right: 20px;
}

.eyebrow {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1 {
  font-size: 44px;
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 18px;
  max-width: 12ch;
}

.subhead {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
  margin: 0 0 22px;
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 10px;
}

.hero-visual-frame {
  background: none;
  border: none;
  box-shadow: none;
  padding: 0;
}

.hero-image {
  border-radius: 14px;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
  overflow: hidden;
}

.hero-image img {
  display: block;
  filter: saturate(0.9) contrast(1.05);
  height: 360px;
  object-fit: cover;
  width: 100%;
}

/* =========================================================
   BUTTONS
========================================================= */
.btn {
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  display: inline-flex;
  font-size: 14px;
  font-weight: 600;
  justify-content: center;
  padding: 11px 16px;
}

.btn:hover {
  text-decoration: none;
}

.btn.primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.btn.secondary {
  background: transparent;
}

/* =========================================================
   SECTIONS
========================================================= */
.section {
  padding: 56px 0;
}

.section.alt {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: 22px;
  max-width: 80ch;
}

h2 {
  font-size: 28px;
  margin: 0 0 10px;
}

.lead {
  color: var(--muted);
  font-size: 16px;
  margin: 0;
}

.small {
  font-size: 12px;
}

.muted {
  color: var(--muted);
}

/* =========================================================
   GRIDS / CARDS
========================================================= */
.grid {
  display: grid;
  gap: 16px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.top-gap {
  margin-top: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
  padding: 18px;
}

.card h3 {
  font-size: 16px;
  margin: 0 0 10px;
}

.card p {
  color: var(--muted);
  margin: 0;
}

/* =========================================================
   VALUE DIAGRAM
========================================================= */
.diagram {
  align-items: center;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr auto 1fr auto 1fr;
}

.step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.arrow {
  color: var(--muted);
  font-weight: 700;
}

/* =========================================================
   BADGES / LISTS / NOTES
========================================================= */
.badge {
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  display: inline-flex;
  font-size: 12px;
  gap: 8px;
  margin-bottom: 10px;
  padding: 6px 10px;
}

.dot {
  background: var(--brand);
  border-radius: 999px;
  height: 8px;
  width: 8px;
}

.bullets {
  color: var(--muted);
  margin: 8px 0 0;
  padding-left: 18px;
}

.bullets li {
  margin: 6px 0;
}

.note {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  margin-top: 18px;
  padding: 14px 16px;
}

/* =========================================================
   WHY STN
========================================================= */
.cred {
  display: flex;
  gap: 12px;
}

.icon {
  align-items: center;
  background: #f1f5f9;
  border-radius: 10px;
  display: flex;
  font-weight: 700;
  height: 36px;
  justify-content: center;
  width: 36px;
}

/* =========================================================
   CONTACT
========================================================= */
.contact-info {
  padding: 24px;
}

#contact .card {
  padding: 18px;
}

#contact .contact-info {
  padding: 24px;
}

.contact-title,
.contact-info h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 14px;
}

.contact-tagline{
  margin: 10px 0 14px;
  font-weight: 650;
  color: var(--text);
}

.contact-copy{
  margin: 0 0 16px;
  color: var(--muted);
  max-width: 62ch;
}

.contact-copy:last-of-type{
  margin-bottom: 16px;
}

.contact-block{
  margin: 16px 0 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 10px;
}

.contact-row{
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  align-items: baseline;
}

.contact-label{
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-value{
  color: var(--text);
}

.cta-mini{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.contact-footnote{
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  max-width: 62ch;
  font-size: 12px;
  line-height: 1.6;
}

/* =========================================================
   FORMS
========================================================= */
.form label {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 10px;
}

input,
textarea {
  border: 1px solid var(--border);
  border-radius: 12px;
  font: inherit;
  margin-top: 6px;
  padding: 10px 12px;
  width: 100%;
}

textarea {
  resize: vertical;
}

.form button {
  display: block;
  margin: 18px auto 0 auto;
}

.form .small {
  margin-top: 20px;
  text-align: center;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

/* =========================================================
   FOOTER
========================================================= */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 22px 0;
}

.footer-inner {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 13px;
  gap: 12px;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  gap: 14px;
}

.footer-links a {
  color: var(--muted);
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 1100px) {
  .nav {
    gap: 14px;
  }
}

@media (max-width: 900px) {
  .grid.two,
  .grid.three,
  .grid.four,
  .hero-inner,
  .diagram {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    padding: 12px;
    position: absolute;
    right: 20px;
    top: 62px;
    width: min(320px, calc(100% - 40px));
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero {
    padding: 64px 0 32px;
  }

  .hero-text {
    max-width: none;
    padding-right: 0;
  }

  h1 {
    font-size: 36px;
    max-width: none;
  }

  .hero-image img {
    height: 240px;
  }

  .contact-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .arrow {
    display: none;
  }
}