:root {
  --navy-950: #03132d;
  --navy-900: #061a3a;
  --navy-800: #0a2a55;
  --blue-700: #155a9c;
  --blue-600: #2170b8;
  --blue-100: #e8f2fb;
  --ink: #111a27;
  --slate: #4f5d6d;
  --line: #dbe3ec;
  --soft: #f4f7fa;
  --white: #ffffff;
  --max: 1180px;
  --shadow: 0 18px 50px rgba(3, 19, 45, 0.10);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: .75rem 1rem;
  color: var(--navy-950);
  background: var(--white);
  border-radius: .35rem;
}
.skip-link:focus { top: 1rem; }

.shell {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(3, 19, 45, .97);
  border-bottom: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand { display: inline-flex; align-items: center; }
.brand img, .footer-brand img {
  width: 215px;
  height: 52px;
  object-fit: cover;
  object-position: center;
}

.header-actions { display: flex; align-items: center; gap: 1rem; }
.text-link {
  color: rgba(255,255,255,.88);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 700;
}
.text-link:hover { color: var(--white); }

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .85rem 1.25rem;
  border: 1px solid transparent;
  border-radius: .35rem;
  font-weight: 800;
  text-decoration: none;
  line-height: 1.2;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button:focus-visible, a:focus-visible { outline: 3px solid #6bb8ff; outline-offset: 3px; }
.button-small { min-height: 42px; padding: .65rem 1rem; font-size: .88rem; }
.button-primary { color: var(--white); background: var(--blue-600); box-shadow: 0 10px 24px rgba(33,112,184,.22); }
.button-primary:hover { background: #195f9e; box-shadow: 0 14px 30px rgba(33,112,184,.28); }
.button-light { color: var(--navy-950); background: var(--white); }
.button-light:hover { background: var(--blue-100); }
.button-ghost { color: var(--white); border-color: rgba(255,255,255,.35); background: transparent; }
.button-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.07); }

.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 84% 18%, rgba(33,112,184,.36), transparent 34%),
    linear-gradient(135deg, var(--navy-950), var(--navy-900) 60%, #09264e);
}
.hero::after {
  content: "";
  position: absolute;
  right: -11rem;
  bottom: -14rem;
  width: 34rem;
  height: 34rem;
  border: 1px solid rgba(255,255,255,.09);
  transform: rotate(45deg);
}

.hero-grid {
  position: relative;
  z-index: 1;
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .75fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 6rem);
  padding-block: clamp(5rem, 9vw, 8rem);
}

.eyebrow {
  margin: 0 0 1.25rem;
  color: #8fc8f7;
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .16em;
}
.eyebrow-blue { color: var(--blue-700); }
.eyebrow-on-dark { color: #9fd2ff; }

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 850px; margin-bottom: 1.6rem; font-size: clamp(2.8rem, 5vw, 4.8rem); }
h2 { margin-bottom: 1.1rem; font-size: clamp(2.1rem, 4vw, 3.55rem); }
h3 { margin-bottom: .9rem; font-size: 1.42rem; }

.hero-lede {
  max-width: 760px;
  margin-bottom: 2rem;
  color: rgba(255,255,255,.78);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.microcopy { margin: .85rem 0 0; color: rgba(255,255,255,.58); font-size: .84rem; }

.hero-panel {
  padding: clamp(1.6rem, 3vw, 2.35rem);
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.055);
  box-shadow: 0 28px 70px rgba(0,0,0,.18);
  backdrop-filter: blur(8px);
}
.panel-kicker { color: #8fc8f7; font-size: clamp(.86rem, 1.2vw, 1rem); font-weight: 900; line-height: 1.35; letter-spacing: .14em; }
.panel-statement { margin: 1.1rem 0 1.4rem; color: rgba(255,255,255,.76); font-size: 1.03rem; }
.panel-rule { width: 48px; height: 2px; margin-bottom: 1.4rem; background: #5fb0f2; }
.panel-tagline { margin: 0; font-size: clamp(1.5rem, 2.6vw, 2.15rem); font-weight: 500; line-height: 1.28; letter-spacing: -.025em; }

.proof-strip { border-bottom: 1px solid var(--line); background: var(--white); }
.proof-authority { padding: 1.2rem 1rem .1rem; text-align: center; }
.proof-authority p { margin: 0; color: var(--blue-700); font-size: .78rem; font-weight: 900; letter-spacing: .15em; }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-item { padding: 1.65rem 1.25rem; border-right: 1px solid var(--line); text-align: center; }
.proof-item:first-child { border-left: 1px solid var(--line); }
.proof-item strong { display: block; color: var(--navy-900); font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1; }
.proof-item span { display: block; margin-top: .5rem; color: var(--slate); font-size: .82rem; font-weight: 700; }
.audience-line { padding-block: 1rem; border-top: 1px solid var(--line); text-align: center; }
.audience-line p { margin: 0; color: var(--navy-800); font-size: .84rem; font-weight: 800; letter-spacing: .02em; }

.section { padding-block: clamp(5rem, 9vw, 8.5rem); }
.challenge-section { background: var(--white); }
.section-heading { margin-bottom: 3rem; }
.section-heading > p:last-child { max-width: 650px; color: var(--slate); font-size: 1.08rem; }
.narrow-heading { max-width: 800px; }

.challenge-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.challenge-card {
  position: relative;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  padding: clamp(1.6rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 6px 0 transparent;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.challenge-card:hover { transform: translateY(-3px); border-color: #a9c8e3; box-shadow: var(--shadow); }
.card-number { margin-bottom: 2.8rem; color: var(--blue-700); font-size: .75rem; font-weight: 900; letter-spacing: .12em; }
.challenge-card h3 { max-width: 410px; }
.challenge-card p { max-width: 500px; margin-bottom: 2rem; color: var(--slate); }
.challenge-card a { margin-top: auto; color: var(--blue-700); font-weight: 900; text-decoration: none; }
.challenge-card a:hover { text-decoration: underline; text-underline-offset: .25rem; }
.challenge-card-dark { color: var(--white); border-color: var(--navy-900); background: var(--navy-900); }
.challenge-card-dark .card-number { color: #8fc8f7; }
.challenge-card-dark p { color: rgba(255,255,255,.68); }
.challenge-card-dark a { color: var(--white); }

.method-section { background: var(--soft); }
.method-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(3rem, 8vw, 7rem); align-items: start; }
.method-intro { position: sticky; top: 115px; }
.method-difference { max-width: 520px; margin-bottom: .9rem; color: var(--ink); font-size: 1.07rem; font-weight: 750; }
.method-intro > p:last-child { max-width: 520px; color: var(--slate); font-size: 1.07rem; }
.method-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid #bdc9d6; }
.method-steps li { display: grid; grid-template-columns: 60px 1fr; gap: 1rem; padding: 1.8rem 0; border-bottom: 1px solid #bdc9d6; }
.method-steps li > span { color: var(--blue-700); font-size: .77rem; font-weight: 900; letter-spacing: .12em; }
.method-steps strong { display: block; margin-bottom: .3rem; color: var(--navy-900); font-size: 1.55rem; }
.method-steps p { margin: 0; color: var(--slate); }

.results-section { color: var(--white); background: var(--navy-950); }
.results-heading { max-width: 720px; }
.results-heading > p:last-child { color: rgba(255,255,255,.68); }
.results-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.18); }
.result-card { min-height: 280px; padding: 2.3rem; border-right: 1px solid rgba(255,255,255,.18); }
.result-card:last-child { border-right: 0; }
.result-card strong { display: block; margin-bottom: 1.4rem; color: #8fc8f7; font-size: clamp(2.9rem, 5vw, 4.9rem); line-height: 1; }
.result-card p { max-width: 280px; margin-bottom: 2rem; color: rgba(255,255,255,.88); font-size: 1.15rem; }
.result-card span { color: rgba(255,255,255,.55); font-size: .82rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }

.founder-section { background: var(--white); }
.founder-grid { display: grid; grid-template-columns: minmax(300px, .75fr) minmax(0, 1.25fr); gap: clamp(3rem, 8vw, 7rem); align-items: center; }
.founder-image-wrap { position: relative; overflow: hidden; aspect-ratio: 4 / 4.4; background: var(--blue-700); }
.founder-image-wrap::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.2); pointer-events: none; }
.founder-image-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 40%; }
.founder-copy { max-width: 650px; }
.founder-lede { color: var(--ink); font-size: 1.17rem; }
.founder-copy > p:not(.eyebrow):not(.founder-lede) { color: var(--slate); }
.credentials { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.6rem; }
.credentials span { padding: .48rem .75rem; border: 1px solid var(--line); color: var(--navy-800); background: var(--soft); font-size: .78rem; font-weight: 800; }

.final-section { padding-top: 0; background: var(--white); }
.final-grid { display: grid; grid-template-columns: repeat(2, 1fr); box-shadow: var(--shadow); }
.final-card { min-height: 440px; display: flex; flex-direction: column; align-items: flex-start; padding: clamp(2rem, 5vw, 4.2rem); }
.final-card p:not(.eyebrow) { max-width: 510px; margin-bottom: 2rem; }
.final-card .button { margin-top: auto; }
.final-card-light { border: 1px solid var(--line); background: var(--white); }
.final-card-light > p:not(.eyebrow) { color: var(--slate); }
.final-card-blue { color: var(--white); background: linear-gradient(145deg, var(--blue-700), var(--navy-800)); }
.final-card-blue > p:not(.eyebrow) { color: rgba(255,255,255,.74); }

.site-footer { padding-block: 3rem; color: var(--white); background: var(--navy-950); }
.footer-inner { display: flex; align-items: end; justify-content: space-between; gap: 2rem; }
.footer-brand p { margin: .8rem 0 0; color: rgba(255,255,255,.55); font-size: .82rem; }
.copyright { margin: 0; color: rgba(255,255,255,.5); font-size: .78rem; }

@media (max-width: 900px) {
  .hero-grid, .method-grid, .founder-grid { grid-template-columns: 1fr; }
  .hero-grid { min-height: auto; }
  .hero-panel { max-width: 620px; }
  .method-intro { position: static; }
  .results-grid { grid-template-columns: 1fr; }
  .result-card { min-height: 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .result-card:last-child { border-bottom: 0; }
  .founder-image-wrap { max-width: 520px; }
}

@media (max-width: 700px) {
  .shell { width: min(calc(100% - 1.25rem), var(--max)); }
  .header-inner { min-height: 66px; }
  .brand img { width: 165px; height: 40px; }
  .text-link { display: none; }
  .button-small { min-height: 38px; padding: .55rem .75rem; font-size: .76rem; }
  h1 { font-size: clamp(2.7rem, 13vw, 4.25rem); }
  .hero-grid { padding-block: 4.5rem 5rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-item:nth-child(odd) { border-left: 1px solid var(--line); }
  .proof-item { border-bottom: 1px solid var(--line); }
  .challenge-grid, .final-grid { grid-template-columns: 1fr; }
  .challenge-card { min-height: 285px; }
  .card-number { margin-bottom: 2rem; }
  .founder-grid { gap: 2.5rem; }
  .final-card { min-height: 390px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}