/* ============================================================
   BTB CONSULTING — DESIGN SYSTEM
   Palette: Ink Navy / Signal Amber / Paper / Slate / Charcoal
   Type: Space Grotesk (display) · Inter (body) · IBM Plex Mono (data/eyebrows)
   Signature motif: scattered nodes resolving into a connected path
   ============================================================ */

:root {
  --navy: #14213D;
  --navy-2: #1C2C4D;
  --amber: #E8A33D;
  --amber-dim: #C98A2E;
  --paper: #F6F7F9;
  --paper-2: #ECEFF3;
  --slate: #A8B4C4;
  --charcoal: #1B1F2A;
  --white: #FFFFFF;
  --line: #DDE2EA;

  --display: 'Space Grotesk', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--body);
  color: var(--charcoal);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

h1, h2, h3, h4 {
  font-family: var(--display);
  color: var(--navy);
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-dim);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 1.5px;
  background: var(--amber);
  display: inline-block;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246,247,249,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.nav-logo img { height: 30px; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--charcoal);
  transition: color .15s;
}
.nav-links a:hover { color: var(--amber-dim); }
.nav-links a.current { color: var(--navy); font-weight: 600; }
.nav-cta {
  background: var(--navy);
  color: var(--white) !important;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--navy-2); }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-links { position: fixed; top: 62px; left: 0; right: 0; background: var(--paper); flex-direction: column; align-items: flex-start; padding: 20px 32px; border-bottom: 1px solid var(--line); gap: 18px; display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; background: none; border: none; cursor: pointer; padding: 6px; }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 5px 0; }
}

/* ---------- Hero ---------- */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 96px 0 110px;
  position: relative;
  overflow: hidden;
}
.hero .wrap { position: relative; z-index: 2; }
.hero h1 { color: var(--white); font-size: 52px; max-width: 780px; }
.hero .sub { font-size: 19px; color: #C7D0E0; max-width: 620px; margin: 22px 0 34px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 7px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all .15s;
}
.btn-amber { background: var(--amber); color: var(--navy); }
.btn-amber:hover { background: #f0b158; }
.btn-outline { border-color: rgba(255,255,255,0.35); color: var(--white); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.06); }
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover { background: var(--navy-2); }

.node-field { position: absolute; inset: 0; z-index: 1; opacity: 0.5; }

/* ---------- Sections ---------- */
section { padding: 88px 0; }
section.tight { padding: 64px 0; }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head h2 { font-size: 34px; }
.section-head p { font-size: 17px; color: #4A5164; margin-top: 14px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: #4A5164; margin: 0; }

.stat-num { font-family: var(--display); font-size: 40px; font-weight: 700; color: var(--navy); }
.stat-label { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--slate); margin-top: 6px; }

.faq-item { border-bottom: 1px solid var(--line); padding: 26px 0; }
.faq-item h3 { font-size: 19px; margin-bottom: 10px; }
.faq-item p { color: #4A5164; margin: 0; font-size: 15.5px; }

blockquote {
  margin: 0;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--amber);
  font-family: var(--display);
  font-size: 21px;
  color: var(--navy);
  font-weight: 500;
}

.cue-card { transition: border-color .15s; }
.cue-card:hover { border-color: var(--amber); }
.cue-card-head { display: flex; align-items: center; justify-content: space-between; }
.cue-card-chevron { color: var(--amber-dim); font-size: 14px; transition: transform .2s; flex-shrink: 0; }
.cue-card.open .cue-card-chevron { transform: rotate(180deg); }
.cue-card-body { max-height: 0; overflow: hidden; opacity: 0; transition: max-height .3s ease, opacity .25s ease, margin-top .3s ease; margin-top: 0; }
.cue-card.open .cue-card-body { max-height: 400px; opacity: 1; margin-top: 14px; }

.pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  background: var(--paper-2);
  color: var(--navy);
  padding: 5px 12px;
  border-radius: 20px;
  margin: 0 8px 8px 0;
}

.dark-band {
  background: var(--navy);
  color: var(--white);
}
.dark-band h2 { color: var(--white); }
.dark-band .section-head p { color: #C7D0E0; }

/* ---------- Bio cards ---------- */
.bio-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 34px;
}
.bio-card .initials {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.bio-card .photo {
  width: 84px; height: 84px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 18px;
  border: 2px solid var(--paper-2);
  display: block;
}
.bio-card h3 { font-size: 20px; margin-bottom: 2px; }
.bio-card .role { font-family: var(--mono); font-size: 12.5px; color: var(--amber-dim); margin-bottom: 16px; display:block; }
.bio-card p { font-size: 14.5px; color: #4A5164; }

/* ---------- Timeline (Our Story) ---------- */
.timeline-item { display: grid; grid-template-columns: 90px 1fr; gap: 28px; padding: 30px 0; border-top: 1px solid var(--line); }
.timeline-item:first-child { border-top: none; }
.timeline-item .yr { font-family: var(--mono); color: var(--amber-dim); font-size: 14px; font-weight: 600; padding-top: 4px; }
.timeline-item h3 { font-size: 20px; margin-bottom: 8px; }
.timeline-item p { color: #4A5164; margin: 0; font-size: 15.5px; }

/* ---------- Footer ---------- */
footer {
  background: var(--navy);
  color: #A9B3C7;
  padding: 56px 0 30px;
  font-size: 14px;
}
footer .foot-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.12); margin-bottom: 24px; }
footer h4 { color: var(--white); font-family: var(--display); font-size: 14px; margin-bottom: 14px; }
footer a { color: #A9B3C7; }
footer a:hover { color: var(--white); }
footer .foot-links { display: flex; flex-direction: column; gap: 10px; }
footer .foot-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #7A85A0; }

.service-tier {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
  background: var(--white);
  position: relative;
}
.service-tier.featured { border-color: var(--amber); box-shadow: 0 8px 28px rgba(232,163,61,0.16); }
.service-tier .tag { position: absolute; top: -12px; right: 24px; background: var(--amber); color: var(--navy); font-family: var(--mono); font-size: 11px; padding: 4px 12px; border-radius: 20px; font-weight: 700; }
.service-tier h3 { font-size: 21px; }
.service-tier .price { font-family: var(--display); font-size: 15px; color: var(--amber-dim); margin: 10px 0 20px; font-weight: 600; }
.service-tier ul { list-style: none; padding: 0; margin: 0 0 24px; }
.service-tier li { padding: 8px 0; font-size: 14.5px; color: #4A5164; border-top: 1px solid var(--paper-2); display: flex; gap: 10px; }
.service-tier li:first-child { border-top: none; }
.service-tier li::before { content: "\2713"; color: var(--amber-dim); font-weight: 700; }