*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --navy: #0B1F3A; --navy-mid: #122845; --navy-light: #1A3860;
  --accent: #2F7FD4; --accent-bright: #4FA3F7;
  --white: #F4F7FB; --muted: #8BA3BE;
  --border: rgba(47,127,212,0.15); --card-bg: rgba(255,255,255,0.03);
}
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; background: var(--navy); color: var(--white); overflow-x: hidden; font-size: 16px; line-height: 1.6; }

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 60px;
  background: rgba(11,31,58,0.88); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-mark { height: 34px; width: auto; display: block; }
.logo-text { font-size: 15px; font-weight: 600; color: var(--white); }
.logo-text span { color: var(--accent-bright); }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--white); }
.nav-cta { background: var(--accent); color: #fff !important; padding: 9px 22px; border-radius: 6px; }
.nav-cta:hover { background: var(--accent-bright) !important; }

.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 140px 60px 100px; position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 70% 60% at 55% 45%, rgba(47,127,212,0.1) 0%, transparent 70%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0; opacity: 0.03;
  background-image: linear-gradient(var(--accent) 1px, transparent 1px), linear-gradient(90deg, var(--accent) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent-bright); margin-bottom: 28px;
}
.eyebrow::before { content: ''; width: 28px; height: 2px; background: var(--accent-bright); }
.hero h1 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(48px, 6vw, 80px); line-height: 1.07; font-weight: 400;
  margin-bottom: 28px;
}
.hero h1 em { font-style: italic; color: var(--accent-bright); }
.hero-sub { font-size: 18px; color: var(--muted); line-height: 1.75; max-width: 560px; margin-bottom: 48px; font-weight: 300; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Page header — smaller hero variant used on interior pages */
.page-header {
  padding: 160px 60px 80px; position: relative; overflow: hidden;
}
.page-header .hero-bg, .page-header .hero-grid { position: absolute; inset: 0; z-index: 0; }
.page-header-content { position: relative; z-index: 1; max-width: 720px; }
.page-header h1 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(38px, 5vw, 60px); line-height: 1.1; font-weight: 400;
  margin-bottom: 20px;
}
.page-header h1 em { font-style: italic; color: var(--accent-bright); }
.page-header-sub { font-size: 17px; color: var(--muted); line-height: 1.75; max-width: 600px; font-weight: 300; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #fff; padding: 14px 30px; border-radius: 7px;
  font-size: 15px; font-weight: 500; text-decoration: none;
  transition: background 0.2s, transform 0.15s; border: none; cursor: pointer;
  font-family: 'DM Sans', sans-serif;
}
.btn-primary:hover { background: var(--accent-bright); transform: translateY(-1px); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); color: var(--white);
  padding: 14px 30px; border-radius: 7px;
  font-size: 15px; font-weight: 500; text-decoration: none;
  transition: border-color 0.2s, transform 0.15s; background: transparent; cursor: pointer;
}
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-1px); }

#services, .section-alt { background: var(--navy-mid); padding: 100px 60px; }
.section-plain { padding: 100px 60px; }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent-bright); margin-bottom: 16px;
}
.section-eyebrow::before { content: ''; width: 20px; height: 2px; background: var(--accent-bright); }
.section-title { font-family: 'Instrument Serif', serif; font-size: clamp(32px,4vw,48px); font-weight: 400; line-height: 1.12; }
.section-sub { font-size: 16px; color: var(--muted); line-height: 1.75; font-weight: 300; }

.services-header { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: end; margin-bottom: 56px; }
.services-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 2px; }
.service-card {
  background: var(--card-bg); border: 1px solid var(--border);
  padding: 36px 32px; transition: background 0.3s, border-color 0.3s, transform 0.2s;
  position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright)); opacity: 0; transition: opacity 0.3s;
}
.service-card:hover { background: rgba(47,127,212,0.06); border-color: rgba(47,127,212,0.35); transform: translateY(-3px); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 44px; height: 44px; margin-bottom: 22px;
  background: rgba(47,127,212,0.1); border: 1px solid rgba(47,127,212,0.2);
  border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.service-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--muted); line-height: 1.7; font-weight: 300; }
.service-card .service-detail {
  list-style: none; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px;
}
.service-card .service-detail li { font-size: 13px; color: var(--muted); font-weight: 300; display: flex; gap: 8px; }
.service-card .service-detail li::before { content: '→'; color: var(--accent-bright); flex-shrink: 0; }

/* Section intro used at top of interior page bodies */
.section-intro { max-width: 640px; margin-bottom: 56px; }
.section-intro .section-title { margin-top: 10px; }

#about { padding: 100px 60px; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-visual {
  background: linear-gradient(145deg, var(--navy-light), var(--navy-mid));
  border: 1px solid var(--border); border-radius: 16px; aspect-ratio: 4/5;
  display: flex; align-items: center; justify-content: center;
}
.about-logo { width: 42%; max-width: 200px; height: auto; opacity: 0.9; }
.about-title { font-family: 'Instrument Serif', serif; font-size: clamp(30px,3.5vw,44px); font-weight: 400; line-height: 1.15; margin-bottom: 16px; }
.about-points { list-style: none; display: flex; flex-direction: column; gap: 14px; margin: 24px 0 36px; }
.about-points li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--muted); font-weight: 300; }
.about-points li::before { content: '→'; color: var(--accent-bright); flex-shrink: 0; margin-top: 2px; }

/* Expertise grid — About page */
.expertise-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2px; margin-top: 60px; }
.expertise-card {
  background: var(--card-bg); border: 1px solid var(--border); padding: 28px 26px;
}
.expertise-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.expertise-card p { font-size: 13px; color: var(--muted); line-height: 1.65; font-weight: 300; }

/* Process timeline — Approach page */
.timeline { display: flex; flex-direction: column; max-width: 780px; margin: 0 auto; }
.timeline-step {
  display: grid; grid-template-columns: 64px 1fr; gap: 28px;
  padding: 32px 0; border-bottom: 1px solid var(--border);
}
.timeline-step:last-child { border-bottom: none; }
.timeline-num {
  font-family: 'Instrument Serif', serif; font-size: 34px; color: var(--accent-bright);
  opacity: 0.6; line-height: 1;
}
.timeline-step h3 { font-size: 19px; font-weight: 600; margin-bottom: 10px; }
.timeline-step p { font-size: 15px; color: var(--muted); line-height: 1.75; font-weight: 300; max-width: 560px; }

/* Engagement models — Approach page */
.models-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 2px; margin-top: 20px; }
.models-grid.cols-2 { grid-template-columns: repeat(2,1fr); }
.model-card { background: var(--card-bg); border: 1px solid var(--border); padding: 32px 28px; }
.model-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.model-card p { font-size: 14px; color: var(--muted); line-height: 1.7; font-weight: 300; }

/* Case study cards — Work page */
.case-study {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 56px; align-items: center;
  padding: 64px 0; border-bottom: 1px solid var(--border);
}
.case-study:last-child { border-bottom: none; }
.case-study-visual {
  background: linear-gradient(145deg, var(--navy-light), var(--navy-mid));
  border: 1px solid var(--border); border-radius: 16px; aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
}
.case-study-monogram { font-family: 'Instrument Serif', serif; font-size: 64px; color: rgba(47,127,212,0.18); user-select: none; text-align: center; padding: 0 20px; }
.case-study-tag {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent-bright); background: rgba(47,127,212,0.1); border: 1px solid var(--border);
  border-radius: 5px; padding: 5px 12px; margin-bottom: 16px;
}
.case-study h3 { font-family: 'Instrument Serif', serif; font-size: clamp(26px,3vw,34px); font-weight: 400; margin-bottom: 14px; }
.case-study p { font-size: 15px; color: var(--muted); line-height: 1.75; font-weight: 300; margin-bottom: 14px; }
.case-study-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.case-study-meta span {
  font-size: 12px; color: var(--muted); border: 1px solid var(--border); border-radius: 5px; padding: 5px 12px;
}

#cta {
  background: linear-gradient(135deg, var(--navy-light), var(--accent));
  text-align: center; padding: 100px 60px; position: relative; overflow: hidden;
}
#cta::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}
#cta h2 { font-family: 'Instrument Serif', serif; font-size: clamp(34px,4vw,52px); font-weight: 400; margin-bottom: 18px; position: relative; }
#cta p { font-size: 17px; opacity: 0.85; max-width: 440px; margin: 0 auto 40px; font-weight: 300; line-height: 1.7; position: relative; }
.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--navy); padding: 14px 30px; border-radius: 7px;
  font-size: 15px; font-weight: 600; text-decoration: none;
  transition: opacity 0.2s, transform 0.15s; position: relative; font-family: 'DM Sans', sans-serif;
}
.btn-white:hover { opacity: 0.92; transform: translateY(-1px); }

#contact { background: var(--navy-mid); padding: 100px 60px; text-align: center; }
#contact .section-eyebrow { justify-content: center; }
#contact .section-eyebrow::before { display: none; }
#contact .section-title { margin-bottom: 12px; }
#contact .section-sub { max-width: 460px; margin: 0 auto 40px; }
.contact-form { max-width: 500px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.contact-form input, .contact-form textarea {
  background: rgba(255,255,255,0.04); border: 1px solid var(--border);
  border-radius: 7px; padding: 14px 18px; font-size: 15px; color: var(--white);
  font-family: 'DM Sans', sans-serif; outline: none; transition: border-color 0.2s; width: 100%;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form textarea { resize: vertical; }

/* Contact page extras */
.contact-info-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 2px; max-width: 700px; margin: 0 auto 56px; }
.contact-info-card { background: var(--card-bg); border: 1px solid var(--border); padding: 28px; text-align: left; }
.contact-info-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.contact-info-card p { font-size: 14px; color: var(--muted); line-height: 1.7; font-weight: 300; }
.contact-info-card a { color: var(--accent-bright); text-decoration: none; }
.contact-info-card a:hover { text-decoration: underline; }

footer {
  background: #080F1C; padding: 40px 60px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}
footer p { font-size: 13px; color: var(--muted); font-weight: 300; }
.footer-links { display: flex; gap: 28px; }
.footer-links a { font-size: 13px; color: var(--muted); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent-bright); }

.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.65s ease, transform 0.65s ease; }
.fade-up.visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .services-header { grid-template-columns: 1fr; gap: 16px; }
  #about { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { aspect-ratio: 3/2; }
  .models-grid { grid-template-columns: 1fr; }
  .case-study { grid-template-columns: 1fr; }
  .case-study-visual { aspect-ratio: 16/9; }
  .contact-info-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  nav { padding: 16px 24px; }
  .nav-links { display: none; }
  .hero, .page-header, #services, .section-alt, .section-plain, #about, #cta, #contact, footer { padding-left: 24px; padding-right: 24px; }
  .hero { padding-top: 110px; }
  .page-header { padding-top: 120px; }
  .services-grid { grid-template-columns: 1fr; }
  .timeline-step { grid-template-columns: 1fr; gap: 8px; }
  footer { flex-direction: column; gap: 16px; text-align: center; }
}