:root {
  --logo-bg: #000511;
  --navy-950: #030814;
  --navy-900: #071224;
  --navy-800: #0d1b32;
  --navy-700: #12345f;
  --gold: #c9983f;
  --gold-light: #e4bd68;
  --ink: #071224;
  --muted: #5e6b7d;
  --line: #dfe6ef;
  --paper: #f6f8fb;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(3, 8, 20, 0.16);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-size: 16px;
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  padding: 14px 72px;
  background: var(--logo-bg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.brand img {
  width: 420px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #dbe6f5;
  font-size: 0.92rem;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--gold-light);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: transparent;
  color: white;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: white;
}

.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 86px;
  align-items: center;
  padding: 80px 72px 46px;
  background:
    radial-gradient(circle at 83% 18%, rgba(201, 152, 63, 0.22), transparent 24%),
    linear-gradient(135deg, var(--navy-950) 0%, var(--navy-900) 48%, #0a1e3b 100%);
  color: white;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--gold-light);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 22px;
  font-size: 4.85rem;
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  max-width: 820px;
  margin-bottom: 26px;
  font-size: 3.65rem;
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
  line-height: 1.25;
}

.hero-copy {
  max-width: 680px;
  color: #cbd7e7;
  font-size: 1.2rem;
}

.hero-actions,
.speaker-actions,
.site-nav,
.contact-section {
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 750;
  line-height: 1.15;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--gold);
  color: var(--navy-950);
}

.button.secondary {
  color: white;
  border-color: rgba(255, 255, 255, 0.22);
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 30px;
}

.hero-system {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(13, 27, 50, 0.78);
  box-shadow: var(--shadow);
}

.hero-system::before {
  content: "";
  position: absolute;
  inset: -32px -20px auto auto;
  width: 124px;
  aspect-ratio: 1;
  border: 1px solid rgba(228, 189, 104, 0.7);
  border-radius: 50%;
}

.system-card {
  position: relative;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

.system-card span {
  color: var(--gold-light);
  font-weight: 800;
}

.system-card p {
  margin: 6px 0 0;
  color: #c7d3e5;
}

.system-card.highlighted {
  border-color: rgba(228, 189, 104, 0.72);
  background: rgba(201, 152, 63, 0.12);
}

.section {
  padding: 112px 72px;
}

.problem-section,
.agents-section,
.faq-section {
  background: var(--paper);
}

.problem-section {
  padding-top: 58px;
}

.problem-grid,
.pillar-grid,
.agent-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.problem-grid article,
.pillar-card,
.agent-list article {
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.problem-grid p,
.pillar-card p,
.agent-list p,
.about-copy p,
.contact-section p,
.faq-list p {
  color: var(--muted);
}

.pillar-card span {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.agents-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: 72px;
}

.agent-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.method-steps {
  display: grid;
  gap: 12px;
  max-width: 980px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
}

.method-steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  align-items: start;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.method-steps strong::before {
  content: counter(step, decimal-leading-zero) ". ";
  color: var(--gold);
}

.method-steps span {
  color: var(--muted);
}

.speaker-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 72px;
  color: white;
  background:
    radial-gradient(circle at 12% 18%, rgba(201, 152, 63, 0.18), transparent 28%),
    linear-gradient(135deg, var(--logo-bg), var(--navy-900));
}

.speaker-intro {
  max-width: 760px;
}

.speaker-intro p {
  max-width: 680px;
  color: #d5dfec;
  font-size: 1.15rem;
}

.speaker-photo {
  margin: 30px 0 0;
  overflow: hidden;
  border: 1px solid rgba(228, 189, 104, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

.speaker-photo img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center 42%;
}

.speaker-photo figcaption {
  padding: 14px 16px;
  color: #dbe6f5;
  background: rgba(0, 5, 17, 0.82);
  border-top: 1px solid rgba(228, 189, 104, 0.2);
  font-size: 0.92rem;
  font-weight: 750;
}

.speaker-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.talk-list {
  display: grid;
  gap: 12px;
}

.talk-list article {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

.talk-list span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--gold-light);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.talk-list h3 {
  color: white;
}

.talk-list p {
  margin-bottom: 0;
  color: #c7d3e5;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 440px);
  gap: 56px;
  align-items: end;
  overflow: hidden;
  color: white;
  background: linear-gradient(135deg, var(--navy-950), var(--navy-800));
}

.about-copy {
  max-width: 900px;
}

.about-copy p {
  max-width: 760px;
  color: #d5dfec;
  font-size: 1.15rem;
}

.founder-portrait {
  position: relative;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 520px;
  margin: 0;
  padding: 24px 24px 0;
  border: 1px solid rgba(228, 189, 104, 0.28);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 70% 18%, rgba(228, 189, 104, 0.22), transparent 30%),
    rgba(255, 255, 255, 0.035);
}

.founder-portrait::before {
  content: "";
  position: absolute;
  top: 28px;
  right: 28px;
  width: 126px;
  aspect-ratio: 1;
  border: 1px solid rgba(228, 189, 104, 0.7);
  border-radius: 50%;
}

.founder-portrait img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-height: 470px;
  object-fit: contain;
  object-position: bottom center;
}

.founder-portrait figcaption {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin: 0 -24px;
  padding: 18px 22px;
  color: #dbe6f5;
  background: rgba(0, 5, 17, 0.88);
  border-top: 1px solid rgba(228, 189, 104, 0.24);
}

.founder-portrait span {
  color: #aebbd0;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 800;
}

.faq-list p {
  margin: 0;
  padding: 0 20px 20px;
}

.contact-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 84px 72px;
  color: white;
  background: var(--navy-900);
}

.contact-section h2 {
  margin-bottom: 14px;
}

.contact-section p {
  max-width: 660px;
  color: #cbd7e7;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 72px;
  color: #cbd7e7;
  background: var(--navy-950);
  font-size: 0.9rem;
}

@media (max-width: 1180px) {
  .site-header,
  .hero,
  .section,
  .contact-section,
  .site-footer {
    padding-left: 44px;
    padding-right: 44px;
  }

  .brand img {
    width: 340px;
  }

  .hero {
    gap: 48px;
  }

  h1 {
    font-size: 3.8rem;
  }

  h2 {
    font-size: 3rem;
  }
}

@media (max-width: 920px) {
  .site-header {
    min-height: 72px;
  }

  .brand img {
    width: 300px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    background: var(--logo-bg);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero,
  .agents-section,
  .speaker-section,
  .about-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
    padding-bottom: 34px;
  }

  .problem-grid,
  .pillar-grid {
    grid-template-columns: 1fr;
  }

  .founder-portrait {
    min-height: 480px;
    max-width: 520px;
  }
}

@media (max-width: 640px) {
  .site-header,
  .hero,
  .section,
  .contact-section,
  .site-footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .brand img {
    width: 238px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.2rem;
  }

  .hero-actions,
  .speaker-actions,
  .contact-section,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .agent-list {
    grid-template-columns: 1fr;
  }

  .method-steps li {
    grid-template-columns: 1fr;
  }

  .hero-system {
    display: none;
  }

  .founder-portrait {
    min-height: 420px;
    padding: 18px 18px 0;
  }

  .founder-portrait figcaption {
    flex-direction: column;
    gap: 2px;
    margin: 0 -18px;
  }
}

@media (max-width: 420px) {
  .brand img {
    width: 210px;
  }

  h1 {
    font-size: 2.55rem;
  }

  h2 {
    font-size: 1.95rem;
  }
}