/* Chefoba — design system
   Institutional, fintech-adjacent. Navy + structured grids. No gradients, no neural-net imagery. */

:root {
  --navy-950: #0a1628;
  --navy-900: #0e1f38;
  --navy-800: #142a4a;
  --navy-700: #1e3a5f;
  --navy-600: #2c4d75;
  --navy-100: #e8edf3;
  --navy-50:  #f4f6f9;
  --paper: #fbfbfa;
  --ink: #14181f;
  --ink-soft: #4a5262;
  --line: #dde2e9;
  --line-soft: #eceff3;
  --accent: #b8863f;
  --accent-dark: #96692a;
  --green-check: #2f6b4f;
  --amber-partial: #a6761f;
  --red-no: #9a3b3b;
  --radius: 3px;
  --max: 1120px;
  --serif: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--navy-950);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand .mark {
  width: 22px; height: 22px;
  border: 1.5px solid var(--navy-950);
  border-radius: 2px;
  display: inline-block;
  position: relative;
}
.brand .mark::before, .brand .mark::after {
  content: "";
  position: absolute;
  background: var(--navy-950);
}
.brand .mark::before { width: 8px; height: 1.5px; top: 6px; left: 3px; }
.brand .mark::after { width: 8px; height: 1.5px; bottom: 6px; right: 3px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  text-decoration: none;
  font-size: 14.5px;
  color: var(--ink-soft);
  font-weight: 500;
}
.nav-links a:hover { color: var(--navy-950); }
.nav-right { display: flex; align-items: center; gap: 22px; }

.has-sub { position: relative; }
.subnav {
  display: none;
  position: absolute;
  top: 100%;
  left: -14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px;
  min-width: 220px;
  box-shadow: 0 8px 24px rgba(10,22,40,0.08);
}
.has-sub:hover .subnav { display: block; }
.subnav a {
  display: block;
  padding: 8px 10px;
  border-radius: 2px;
  font-size: 14px;
}
.subnav a:hover { background: var(--navy-50); }

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy-950);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-open .mobile-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .mobile-toggle span:nth-child(2) { opacity: 0; }
.nav-open .mobile-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--paper);
  padding: 10px 32px 24px;
  max-height: calc(100vh - 68px);
  overflow-y: auto;
}
.nav-open .mobile-menu { display: block; }
.mobile-menu > a {
  display: block;
  padding: 13px 0;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}
.mobile-menu > a:hover { color: var(--navy-950); }
.mobile-group {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.mobile-group-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  opacity: 0.7;
  margin-bottom: 4px;
}
.mobile-group a {
  display: block;
  padding: 9px 0 9px 14px;
  text-decoration: none;
  font-size: 15px;
  color: var(--ink-soft);
}
.mobile-group a:hover { color: var(--navy-950); }
.mobile-menu .mobile-menu-cta {
  display: block;
  text-align: center;
  margin-top: 18px;
  border-bottom: none;
  color: #fff;
}
.mobile-menu .mobile-menu-cta:hover { color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--sans);
}
.btn-primary {
  background: var(--navy-950);
  color: #fff;
  border-color: var(--navy-950);
}
.btn-primary:hover { background: var(--navy-800); }
.btn-outline {
  background: transparent;
  color: var(--navy-950);
  border-color: var(--navy-950);
}
.btn-outline:hover { background: var(--navy-50); }
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--navy-600); color: var(--navy-950); }
.btn-lg { padding: 14px 28px; font-size: 15.5px; }
.btn-on-dark { background: #fff; color: var(--navy-950); border-color: #fff; }
.btn-on-dark:hover { background: var(--navy-100); }

/* ---------- Hero ---------- */
.hero {
  background: var(--navy-950);
  color: #fff;
  padding: 96px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--navy-900) 1px, transparent 1px),
    linear-gradient(90deg, var(--navy-900) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.4;
  pointer-events: none;
}
.hero .wrap { position: relative; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 18px;
  font-weight: 600;
}
.hero h1 {
  font-family: var(--serif);
  font-size: 46px;
  line-height: 1.15;
  font-weight: 600;
  max-width: 780px;
  margin: 0 0 22px;
  letter-spacing: -0.01em;
}
.hero .lede {
  font-size: 18px;
  color: rgba(255,255,255,0.78);
  max-width: 620px;
  margin: 0 0 34px;
  line-height: 1.65;
}
.hero-ctas { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 13px; color: rgba(255,255,255,0.5); }

.page-hero {
  background: var(--navy-950);
  color: #fff;
  padding: 64px 0 56px;
}
.page-hero h1 {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 600;
  max-width: 760px;
  margin: 0 0 16px;
  line-height: 1.2;
}
.page-hero .lede {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  max-width: 640px;
  margin: 0;
}
.breadcrumb {
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}
.breadcrumb a { color: rgba(255,255,255,0.7); text-decoration: none; }

/* ---------- Sections ---------- */
section { padding: 76px 0; }
section.tight { padding: 48px 0; }
.section-alt { background: var(--navy-50); }
.section-navy { background: var(--navy-950); color: #fff; }
.section-navy .section-head p { color: rgba(255,255,255,0.7); }
.section-navy h2 { color: #fff; }

.section-head { max-width: 680px; margin: 0 0 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-dark);
  font-weight: 600;
  margin: 0 0 12px;
}
h2 {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  margin: 0 0 14px;
  line-height: 1.25;
  color: var(--navy-950);
}
h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--navy-950);
}
p { margin: 0 0 16px; color: var(--ink-soft); }
.lead-p { font-size: 17px; color: var(--ink-soft); }

/* ---------- Steps strip ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.step {
  padding: 28px 24px;
  border-right: 1px solid var(--line);
  position: relative;
}
.step:last-child { border-right: none; }
.step-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 600;
  margin-bottom: 14px;
}
.step h3 { font-size: 16.5px; margin-bottom: 8px; }
.step p { font-size: 14.5px; margin: 0; }

/* ---------- Cards / grids ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  background: #fff;
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: 14.5px; margin-bottom: 0; }

.module {
  border-top: 3px solid var(--navy-950);
  padding: 26px 0 0;
}
.module .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 12px;
}

/* ---------- Stat / proof strip ---------- */
.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proof-card {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--navy-950);
  border-radius: var(--radius);
  padding: 28px 26px;
}
.proof-num {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--navy-950);
  margin-bottom: 10px;
  line-height: 1;
}
.proof-card p { font-size: 14.5px; margin: 0; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.compare {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 14px;
  min-width: 760px;
}
table.compare th, table.compare td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
}
table.compare th {
  background: var(--navy-950);
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  position: sticky;
  top: 68px;
}
table.compare th:first-child { text-align: left; min-width: 260px; }
table.compare td:not(:first-child), table.compare th:not(:first-child) {
  text-align: center;
}
table.compare td:first-child { font-weight: 500; color: var(--ink); }
table.compare tr.us td:first-child { position: relative; }
td.yes { color: var(--green-check); font-weight: 700; }
td.partial { color: var(--amber-partial); font-weight: 700; }
td.no { color: var(--red-no); font-weight: 700; }
.cell-note { display: block; font-size: 11px; color: var(--ink-soft); font-weight: 400; margin-top: 2px; }
.col-us { background: var(--navy-50); }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--navy-950);
  color: #fff;
  padding: 60px 0;
  text-align: center;
}
.cta-band h2 { color: #fff; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.72); max-width: 520px; margin: 0 auto 28px; }

/* ---------- Footer ---------- */
footer {
  background: var(--navy-950);
  color: rgba(255,255,255,0.6);
  padding: 56px 0 28px;
  border-top: 1px solid var(--navy-800);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 28px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--navy-800);
}
.footer-brand .brand { color: #fff; }
.footer-brand .brand .mark { border-color: #fff; }
.footer-brand .brand .mark::before, .footer-brand .brand .mark::after { background: #fff; }
.footer-brand p { font-size: 13.5px; color: rgba(255,255,255,0.5); margin-top: 14px; max-width: 240px; }
.footer-col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.85);
  margin: 0 0 14px;
  font-weight: 600;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { text-decoration: none; font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.4);
}

/* ---------- Diagram ---------- */
.diagram-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 32px;
}

/* ---------- Form ---------- */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 620px;
}
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--navy-950);
  margin-bottom: 7px;
}
.field .hint { font-size: 12.5px; color: var(--ink-soft); margin-top: 6px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--ink);
  background: var(--paper);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--navy-600);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ---------- Misc ---------- */
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-soft);
  margin-right: 8px;
  margin-bottom: 8px;
}
.divider { border: none; border-top: 1px solid var(--line); margin: 48px 0; }
.form-success {
  border: 1px solid var(--line);
  border-left: 3px solid var(--navy-700);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 20px;
  background: #fff;
  font-size: 14.5px;
}
.two-col-text { display: grid; grid-template-columns: 240px 1fr; gap: 40px; }
.two-col-text h3 { margin-bottom: 0; font-size: 17px; }
.finding {
  border: 1px solid var(--line);
  border-left: 3px solid var(--navy-700);
  border-radius: var(--radius);
  padding: 22px 24px;
  background: #fff;
  margin-bottom: 18px;
}
.finding.honest { border-left-color: var(--amber-partial); }
.finding .flabel {
  font-family: var(--mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 8px;
  display: block;
}
.angle-box {
  background: var(--navy-950);
  color: #fff;
  border-radius: var(--radius);
  padding: 30px 32px;
  margin: 32px 0 40px;
}
.angle-box .kicker { color: var(--accent); }
.angle-box p { color: rgba(255,255,255,0.85); margin: 0; font-size: 16px; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .nav-links, .nav-right .btn-ghost { display: none; }
  .mobile-toggle { display: flex; }
  .site-nav .wrap { gap: 14px; }
  .nav-right { margin-left: auto; }
  .hero h1 { font-size: 34px; }
  .steps, .grid-3, .grid-4, .proof-strip { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .step { border-right: none; border-bottom: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .two-col-text { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .nav-right { display: none; }
  .mobile-menu { padding: 10px 24px 24px; }
  .wrap { padding: 0 24px; }
}