/* DBI, Deliberate Intelligence. Calm, confident, accessible.
   Quiet color, big type, generous air, motion that respects the user. */
:root {
  --ink: #1d1d1f;
  --ink-soft: #515154;
  --bg: #fbfbfd;
  --card: #ffffff;
  --line: #e8e8ed;
  --chip: #f5f5f7;
  --accent: #0071e3;
  --accent-dark: #0060c9;
  --dark: #000000;
  --dark-soft: #161617;
  --radius: 18px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Helvetica Neue", "Segoe UI", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Skip link: invisible until keyboard focus */
.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  z-index: 100;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; color: #fff; }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 780px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 251, 253, 0.82);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark { font-weight: 800; font-size: 1.25rem; letter-spacing: -0.01em; }
.brand-name { font-weight: 400; color: var(--ink-soft); font-size: 1rem; }
.nav { display: flex; gap: 8px; }
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  padding: 10px 14px;
  border-radius: 10px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav a:hover { color: var(--ink); background: var(--chip); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(96px, 13vw, 168px) 0 clamp(72px, 9vw, 120px);
}
.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(640px 380px at 50% -60px, rgba(0, 113, 227, 0.10), transparent 70%),
    radial-gradient(520px 340px at 12% 30%, rgba(0, 113, 227, 0.05), transparent 70%),
    radial-gradient(520px 340px at 88% 24%, rgba(64, 160, 255, 0.07), transparent 70%);
}
.eyebrow {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 20px;
}
.hero h1, .display {
  font-size: clamp(2.9rem, 7vw, 4.9rem);
  line-height: 1.04;
  letter-spacing: -0.028em;
  font-weight: 700;
  margin: 0 0 24px;
  max-width: 16em;
  margin-left: auto;
  margin-right: auto;
}
.lede {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 34em;
  margin: 0 auto;
}
.cta-row {
  display: flex;
  gap: 28px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 40px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 14px 36px;
  border-radius: 980px;
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(0, 113, 227, 0.28);
}
.link-arrow {
  color: var(--accent-dark);
  font-size: 1.05rem;
  font-weight: 500;
  text-decoration: none;
}
.link-arrow:hover { text-decoration: underline; }

/* ---------- Sections ---------- */
section.block { padding: clamp(64px, 8vw, 112px) 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-head h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 14px;
}
.section-head p { color: var(--ink-soft); font-size: 1.1rem; margin: 0; }

/* Value cards */
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 34px;
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.045);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.08);
}
.card h3 {
  font-size: 1.35rem;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
}
.card p { color: var(--ink-soft); margin: 0; font-size: 1.02rem; }

/* Service rows */
.service-list { display: grid; gap: 14px; }
.service-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 32px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 34px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.service-row:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.07);
}
.service-row h3 { font-size: 1.3rem; letter-spacing: -0.015em; margin: 0 0 6px; }
.service-row p { color: var(--ink-soft); margin: 0; }
.service-row .go {
  font-size: 1.6rem;
  color: var(--accent-dark);
  font-weight: 300;
}

/* Service detail blocks */
.service-detail {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}
.service-detail:last-of-type { border-bottom: none; }
.service-detail h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.service-detail > p { color: var(--ink-soft); font-size: 1.1rem; max-width: 46em; margin: 0 0 22px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.chips li {
  background: var(--chip);
  border: 1px solid var(--line);
  border-radius: 980px;
  padding: 9px 18px;
  font-size: 0.95rem;
  color: var(--ink);
}

/* ---------- Dark band ---------- */
.band-dark {
  background:
    radial-gradient(720px 420px at 50% 0%, rgba(0, 113, 227, 0.22), transparent 70%),
    var(--dark);
  color: #f5f5f7;
  text-align: center;
}
.band-dark h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  letter-spacing: -0.02em;
  margin: 0 0 48px;
}
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat .num {
  font-size: clamp(2.4rem, 4.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.stat .lbl { color: #a1a1a6; margin-top: 10px; font-size: 1rem; }

/* ---------- CTA ---------- */
.cta-center { text-align: center; }
.cta-center h2 {
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0 0 18px;
}
.cta-center p { color: var(--ink-soft); font-size: 1.15rem; max-width: 30em; margin: 0 auto 36px; }

/* ---------- Credentials ---------- */
.cred-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.cred {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
}
.cred h3 { font-size: 1.1rem; margin: 0 0 8px; letter-spacing: -0.01em; }
.cred p { color: var(--ink-soft); margin: 0; }

/* ---------- Contact ---------- */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 64px; }
.contact-cards .card { text-align: left; }
.contact-cards .card h3 { font-size: 1.05rem; color: var(--ink-soft); font-weight: 600; margin-bottom: 10px; }
.contact-cards .card p { color: var(--ink); font-size: 1.15rem; margin: 0; }
.contact-cards a { color: var(--accent-dark); text-decoration: none; }
.contact-cards a:hover { text-decoration: underline; }

.contact-form { max-width: 640px; margin: 0 auto; }
.field { margin-bottom: 24px; }
.field label { display: block; font-weight: 600; font-size: 1.02rem; margin-bottom: 8px; }
.field .req { color: var(--accent-dark); font-weight: 700; }
.field input, .field textarea {
  display: block;
  width: 100%;
  padding: 16px 18px;
  font: inherit;
  font-size: 1.05rem;
  color: var(--ink);
  background: var(--card);
  border: 1.5px solid #d2d2d7;
  border-radius: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:hover, .field textarea:hover { border-color: #b9b9c0; }
.field input:focus, .field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.16);
  outline: none;
}
.fineprint { font-size: 0.9rem; color: var(--ink-soft); margin-top: 20px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0;
  margin-top: 24px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-inner p { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.footer-inner nav { display: flex; gap: 8px; }
.footer-inner nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 10px 12px;
  border-radius: 8px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.footer-inner nav a:hover { color: var(--ink); }

/* ---------- Motion: gentle reveals, off when the user asks ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.85s ease, transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .service-row, .btn { transition: none; }
  .card:hover, .service-row:hover, .btn.primary:hover { transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .trio { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cred-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .brand-name { display: none; }
  .nav a { padding: 10px 8px; }
  .service-row { grid-template-columns: 1fr; }
  .service-row .go { display: none; }
  .card { padding: 32px 26px; }
}