*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --bg: #f2f2f3;
  --bg-alt: #e9e9ea;
  --ink: #1d1f20;
  --ink-78: rgba(29, 31, 32, 0.78);
  --ink-72: rgba(29, 31, 32, 0.72);
  --ink-65: rgba(29, 31, 32, 0.65);
  --ink-55: rgba(29, 31, 32, 0.55);
  --line: rgba(29, 31, 32, 0.16);
  --line-strong: rgba(29, 31, 32, 0.3);
  --gold: #8a6a1c;
  --gold-bright: #c1932f;
  --gold-light: #d8ae4f;
  --navy: #1b2c56;
  --navy-hover: #24396b;
  --navy-deep: #14213f;
  --paper: #f2f2f3;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Barlow", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: "Barlow Condensed", system-ui, sans-serif;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.015em;
}

p { margin: 0; }

a {
  color: var(--gold);
  text-decoration: none;
  text-underline-offset: 3px;
}
a:hover {
  color: var(--navy-deep);
  text-decoration: underline;
}

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 2px;
}
::selection { background: rgba(27, 44, 86, 0.25); }

img { max-width: 100%; }

section[id], div[id] { scroll-margin-top: 84px; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 40px;
  padding-right: 40px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(242, 242, 243, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  color: var(--ink);
}

.brand-logo {
  display: block;
  height: 52px;
  width: auto;
  mix-blend-mode: multiply;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 14px 26px;
  border-radius: 4px;
}

.btn-primary {
  background: var(--navy);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--navy-hover);
  color: var(--paper);
  text-decoration: none;
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-ghost:hover {
  background: rgba(29, 31, 32, 0.07);
  color: var(--ink);
  text-decoration: none;
}

.btn-nav {
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 9px 18px;
}

/* ---------- Hero ---------- */

.hero {
  padding-top: 96px;
  padding-bottom: 88px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 72px;
  align-items: start;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.kicker-line {
  width: 36px;
  height: 1px;
  background: rgba(29, 31, 32, 0.4);
  display: block;
}

.kicker-label {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.hero h1 {
  font-size: 70px;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  text-wrap: pretty;
}

.hero-lede {
  font-size: 19px;
  line-height: 1.6;
  max-width: 56ch;
  color: var(--ink-78);
  margin-bottom: 36px;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- Operating model card ---------- */

.model-card {
  position: relative;
  border: 1px solid var(--line);
  padding: 32px 30px;
}

.corner {
  position: absolute;
  width: 11px;
  height: 11px;
  background:
    linear-gradient(#1d1f208c, #1d1f208c) center / 1px 100% no-repeat,
    linear-gradient(#1d1f208c, #1d1f208c) center / 100% 1px no-repeat;
}
.corner-tl { top: -6px; left: -6px; }
.corner-tr { top: -6px; right: -6px; }
.corner-bl { bottom: -6px; left: -6px; }
.corner-br { bottom: -6px; right: -6px; }

.model-card-title {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-55);
  margin-bottom: 22px;
}

.model-row {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.model-row-last { border-bottom: 1px solid var(--line); }

.model-num {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.model-name {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 21px;
}

.model-desc {
  font-size: 14px;
  color: var(--ink-65);
}

/* ---------- Pillars ---------- */

.pillars-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.pillar {
  padding: 56px 40px 60px;
}
.pillar-first {
  padding-left: 0;
  border-right: 1px solid var(--line);
}
.pillar-mid {
  border-right: 1px solid var(--line);
}
.pillar-last {
  padding-right: 0;
}

.pillar-kicker {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.badgerflow-logo {
  display: block;
  width: 230px;
  height: auto;
  margin: -18px 0 14px -14px;
  mix-blend-mode: multiply;
}

.pillar h3 {
  font-size: 32px;
  margin-bottom: 8px;
}

.pillar-sub {
  font-size: 14px;
  color: var(--ink-55);
  margin-bottom: 18px;
}

.pillar-lede {
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-78);
  margin-bottom: 22px;
  text-wrap: pretty;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.feature-list li {
  display: grid;
  grid-template-columns: 14px 1fr;
  gap: 10px;
  font-size: 15px;
  color: rgba(29, 31, 32, 0.8);
}

.bullet {
  width: 6px;
  height: 6px;
  background: var(--gold-bright);
  margin-top: 8px;
  display: block;
}

/* ---------- Sovereignty ---------- */

.sovereignty {
  padding-top: 96px;
  padding-bottom: 88px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 72px;
  align-items: start;
}

.sovereignty .kicker { margin-bottom: 24px; }

.sovereignty h2 {
  font-size: 46px;
  margin-bottom: 22px;
  text-wrap: pretty;
}

.sovereignty-lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-78);
  max-width: 44ch;
  text-wrap: pretty;
}

.sovereignty-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.sovereignty-cell {
  background: var(--bg);
  padding: 30px 28px;
}

.sovereignty-cell h4 {
  font-size: 22px;
  margin-bottom: 10px;
}

.sovereignty-cell p {
  font-size: 15px;
  color: var(--ink-72);
  text-wrap: pretty;
}

/* ---------- Engagement ---------- */

.engagement-band {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
}

.engagement {
  padding-top: 88px;
  padding-bottom: 88px;
}

.engagement-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.engagement-head h2 {
  font-size: 46px;
  max-width: 20ch;
  text-wrap: pretty;
}

.engagement-head p {
  font-size: 16px;
  color: rgba(29, 31, 32, 0.7);
  max-width: 42ch;
  text-wrap: pretty;
}

.stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stage {
  border-top: 1px solid var(--line-strong);
  padding-top: 22px;
}

.stage-num {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 34px;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 14px;
}

.stage h4 {
  font-size: 22px;
  margin-bottom: 10px;
}

.stage p {
  font-size: 15px;
  color: var(--ink-72);
  text-wrap: pretty;
}

/* ---------- Contact ---------- */

.contact-band {
  background: var(--navy-deep);
  color: var(--paper);
}

.contact {
  padding-top: 96px;
  padding-bottom: 96px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}

.contact h2 {
  font-size: 52px;
  color: var(--paper);
  margin-bottom: 20px;
  text-wrap: pretty;
}

.contact-lede {
  font-size: 18px;
  line-height: 1.6;
  color: rgba(242, 242, 243, 0.75);
  max-width: 48ch;
  text-wrap: pretty;
}

.contact-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.contact-label {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(242, 242, 243, 0.6);
}

.contact-email {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 600;
  font-size: 38px;
  letter-spacing: -0.01em;
  color: var(--gold-light);
  border-bottom: 1px solid rgba(216, 174, 79, 0.4);
  padding-bottom: 6px;
  overflow-wrap: anywhere;
}
.contact-email:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
  text-decoration: none;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  padding-top: 36px;
  padding-bottom: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-logo {
  display: block;
  height: 44px;
  width: auto;
  mix-blend-mode: multiply;
}

.footer-note {
  font-size: 13px;
  color: var(--ink-55);
}

/* ---------- Responsive ---------- */

@media (max-width: 1020px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 56px;
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .hero h1 { font-size: 54px; }

  .pillars { grid-template-columns: 1fr; }

  .pillar,
  .pillar-first,
  .pillar-mid,
  .pillar-last {
    padding: 44px 0;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .pillar-last { border-bottom: none; }

  .sovereignty {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .stages {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 72px;
    padding-bottom: 72px;
  }
}

@media (max-width: 860px) {
  .nav-link { display: none; }
}

@media (max-width: 640px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero h1 { font-size: 42px; }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .sovereignty-grid { grid-template-columns: 1fr; }

  .sovereignty h2,
  .engagement-head h2 { font-size: 38px; }

  .stages { grid-template-columns: 1fr; }

  .contact h2 { font-size: 40px; }

  .contact-email { font-size: 28px; }
}