:root {
  --ink: #0f172a;
  --muted: #475569;
  --soft: #64748b;
  --line: #e2e8f0;
  --paper: #f8fafc;
  --white: #ffffff;
  --navy: #0b1f3a;
  --accent: #1d4ed8;
  --accent-soft: #dbeafe;
  --gold: #c9a227;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --max: 1080px;
  --letter-max: 720px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }
.wrap-letter { width: min(100% - 2.5rem, var(--letter-max)); margin-inline: auto; }

.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(255,255,255,0.88);
  border-bottom: 1px solid rgba(226,232,240,0.8);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 0; gap: 1rem;
}
.brand {
  font-weight: 700; letter-spacing: -0.02em; color: var(--navy);
}
.nav-links { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; }
.nav-links a { color: var(--muted); font-size: 0.95rem; font-weight: 500; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--navy); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; border-radius: 999px; padding: 0.8rem 1.25rem;
  font-weight: 600; border: 1px solid transparent; transition: 0.2s ease;
  cursor: pointer; font: inherit;
}
.btn-primary { background: var(--navy); color: white; }
.btn-primary:hover { background: #16345c; transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--navy); }
.btn-ghost:hover { border-color: var(--navy); }

.hero {
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(circle at top right, rgba(29,78,216,0.08), transparent 40%),
    linear-gradient(180deg, #f8fafc 0%, #ffffff 70%);
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem; align-items: center;
}
.eyebrow {
  display: inline-block; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent);
  background: var(--accent-soft); padding: 0.35rem 0.7rem; border-radius: 999px;
  margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.08; letter-spacing: -0.04em; color: var(--navy);
  margin-bottom: 1rem;
}
.hero .lede {
  font-size: 1.15rem; color: var(--muted); max-width: 36rem; margin-bottom: 1.75rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.75rem; }
.creds { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.creds span {
  font-size: 0.82rem; font-weight: 600; color: var(--soft);
  border: 1px solid var(--line); background: white;
  padding: 0.35rem 0.65rem; border-radius: 999px;
}
.portrait-card {
  position: relative; justify-self: end; width: min(100%, 360px);
}
.portrait-card img {
  width: 100%; aspect-ratio: 1; object-fit: cover; object-position: center top;
  border-radius: 28px; box-shadow: var(--shadow);
  border: 6px solid white;
}
.portrait-badge {
  position: absolute; left: 1rem; bottom: 1rem;
  background: rgba(11,31,58,0.92); color: white;
  padding: 0.75rem 1rem; border-radius: 14px; font-size: 0.85rem;
  line-height: 1.35; max-width: 80%;
}
.portrait-badge strong { display: block; font-size: 0.95rem; }

section { padding: 4rem 0; }
section.alt { background: var(--paper); }
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.03em; color: var(--navy); margin-bottom: 0.75rem;
}
.section-sub { color: var(--muted); max-width: 40rem; margin-bottom: 2rem; }

.about-grid {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 2rem;
}
.about-copy p { color: var(--muted); margin-bottom: 1rem; font-size: 1.05rem; }
.about-card {
  background: white; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow);
}
.about-card h3 { color: var(--navy); margin-bottom: 0.75rem; }
.about-card ul { list-style: none; display: grid; gap: 0.65rem; }
.about-card li {
  color: var(--muted); padding-left: 1.2rem; position: relative;
}
.about-card li::before {
  content: ""; position: absolute; left: 0; top: 0.55rem;
  width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--gold);
}

.pillars {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
.pillar {
  background: white; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem; transition: 0.2s ease;
}
.pillar:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.pillar .num {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em;
  color: var(--gold); margin-bottom: 0.6rem;
}
.pillar h3 { color: var(--navy); margin-bottom: 0.5rem; font-size: 1.1rem; }
.pillar p { color: var(--muted); font-size: 0.98rem; }

.social-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.85rem;
}
.social {
  display: flex; flex-direction: column; gap: 0.25rem;
  background: white; border: 1px solid var(--line); border-radius: 14px;
  padding: 1.1rem; transition: 0.2s ease;
}
.social:hover { border-color: var(--navy); transform: translateY(-2px); }
.social strong { color: var(--navy); }
.social span { color: var(--soft); font-size: 0.9rem; }

.cta {
  background: linear-gradient(135deg, #0b1f3a 0%, #16345c 60%, #1d4ed8 140%);
  color: white; border-radius: 28px; padding: 2.5rem;
  display: grid; grid-template-columns: 1.4fr auto; gap: 1.5rem; align-items: center;
}
.cta h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -0.03em; margin-bottom: 0.5rem; }
.cta p { color: rgba(255,255,255,0.82); max-width: 34rem; }
.cta .btn-primary { background: white; color: var(--navy); }
.cta .btn-primary:hover { background: #eef2ff; }
.cta .btn-ghost { border-color: rgba(255,255,255,0.35); color: white; }

/* Blog listing */
.blog-hero { padding: 3.5rem 0 2rem; background: var(--paper); }
.blog-list { display: grid; gap: 1rem; }
.blog-card {
  display: block; background: white; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.5rem 1.6rem; transition: 0.2s ease;
}
.blog-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: #cbd5e1; }
.blog-card .meta { color: var(--soft); font-size: 0.88rem; margin-bottom: 0.4rem; }
.blog-card h2 { color: var(--navy); font-size: 1.35rem; letter-spacing: -0.02em; margin-bottom: 0.45rem; }
.blog-card p { color: var(--muted); }
.cadence-note {
  margin-top: 2rem; padding: 1rem 1.2rem; border-left: 3px solid var(--gold);
  background: white; border-radius: 0 12px 12px 0; color: var(--muted);
}

/* Letter post */
.letter-page { background: #faf9f6; }
.letter {
  background: white; border: 1px solid var(--line); border-radius: 20px;
  padding: clamp(1.5rem, 4vw, 2.75rem); box-shadow: var(--shadow);
  margin: 2rem auto 3rem;
}
.letter-meta { color: var(--soft); font-size: 0.9rem; margin-bottom: 1rem; }
.letter h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.35rem); letter-spacing: -0.03em;
  color: var(--navy); line-height: 1.2; margin-bottom: 1.5rem;
}
.letter .salutation { font-size: 1.1rem; color: var(--ink); margin-bottom: 1rem; }
.letter .body p { color: var(--muted); font-size: 1.08rem; margin-bottom: 1.1rem; }
.letter .closing { margin-top: 1.75rem; color: var(--ink); }
.letter .signoff { margin-top: 0.35rem; color: var(--ink); }
.signature {
  margin-top: 0.75rem; max-width: 280px; height: auto;
}
.letter-nav { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.letter-nav a { color: var(--accent); font-weight: 600; font-size: 0.95rem; }

/* Subscribe */
.subscribe-box {
  background: white; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.75rem; box-shadow: var(--shadow); max-width: 36rem;
}
.subscribe-box h3 { color: var(--navy); margin-bottom: 0.4rem; }
.subscribe-box > p { color: var(--muted); margin-bottom: 1rem; font-size: 0.98rem; }
.subscribe-form {
  display: flex; flex-wrap: wrap; gap: 0.65rem; align-items: stretch;
}
.subscribe-form label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.subscribe-form input[type="email"] {
  flex: 1 1 220px; border: 1px solid var(--line); border-radius: 999px;
  padding: 0.8rem 1.1rem; font: inherit; color: var(--ink); background: var(--paper);
}
.subscribe-form input[type="email"]:focus {
  outline: 2px solid var(--accent-soft); border-color: var(--accent);
}
.subscribe-hint { margin-top: 0.75rem; font-size: 0.88rem; color: var(--soft); }
.subscribe-hint a { color: var(--accent); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.subscribe-status { margin-top: 0.85rem; font-size: 0.95rem; }
.subscribe-status.is-success { color: #1b6b3a; font-weight: 600; }
.subscribe-status.is-error { color: #a12622; font-weight: 600; }
.subscribe-form button:disabled { opacity: 0.7; cursor: wait; }

footer {
  padding: 2rem 0 2.5rem; border-top: 1px solid var(--line); color: var(--soft); font-size: 0.92rem;
}
.footer-inner { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

@media (max-width: 860px) {
  .hero-grid, .about-grid, .pillars, .social-grid, .cta { grid-template-columns: 1fr; }
  .portrait-card { justify-self: center; }
  .nav-links a:not(.btn) { display: none; }
}