:root {
  --white: #ffffff;
  --black: #000000;
  --deep: #002914;
  --deep-2: #04150c;
  --deep-3: #071f12;
  --green: #24c447;
  --lime: #7bd633;
  --line: rgba(123, 214, 51, 0.24);
  --line-bright: rgba(36, 196, 71, 0.58);
  --text: rgba(255, 255, 255, 0.9);
  --muted: rgba(255, 255, 255, 0.66);
  --shadow: 0 20px 80px rgba(0, 0, 0, 0.45);
  --display-font: "Pattanakarn Expanded", "Orbitron", "Chakra Petch", system-ui, sans-serif;
  --body-font: "Chakra Petch", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: var(--body-font);
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.2), rgba(0, 41, 20, 0.6)),
    var(--black);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.28), rgba(0, 0, 0, 0.88)),
    url("/media/summit-section-texture.png") center top / cover no-repeat;
  opacity: 0.42;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(36, 196, 71, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(36, 196, 71, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, transparent, black 18%, black 82%, transparent);
}

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

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

p {
  line-height: 1.7;
}

ul {
  margin: 0;
  padding-left: 1.1rem;
}

li + li {
  margin-top: 0.45rem;
}

.hero-banner {
  min-height: min(56vw, 760px);
  background: var(--black);
  border-bottom: 1px solid rgba(123, 214, 51, 0.22);
  overflow: hidden;
}

.hero-banner img {
  width: 100%;
  min-height: min(56vw, 760px);
  object-fit: cover;
  object-position: center top;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  justify-content: center;
  width: 100%;
  padding: 0.8rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid rgba(123, 214, 51, 0.18);
  background: rgba(0, 12, 6, 0.88);
  backdrop-filter: blur(18px);
}

.nav-links {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  gap: clamp(0.7rem, 2vw, 1.6rem);
  min-width: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav-links a {
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--white);
  border-color: var(--lime);
}

.nav-cta,
.button-primary,
.button-secondary {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-weight: 700;
  line-height: 1;
}

.nav-cta,
.button-primary {
  color: var(--black);
  background: linear-gradient(135deg, var(--lime), var(--green));
  box-shadow: 0 0 34px rgba(36, 196, 71, 0.25);
}

.button-secondary {
  color: var(--white);
  border: 1px solid var(--line-bright);
  background: rgba(0, 41, 20, 0.54);
}

.section {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.section-kicker,
.eyebrow,
.speaker-role,
.feature-number {
  color: var(--lime);
  font-family: var(--display-font);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--white);
  font-family: var(--display-font);
  line-height: 1.05;
  text-transform: uppercase;
}

h1 {
  max-width: 930px;
  margin-top: 0.8rem;
  font-size: clamp(2.35rem, 7vw, 5.8rem);
}

h2 {
  margin-top: 0.6rem;
  font-size: clamp(2rem, 4.6vw, 4.2rem);
}

h3 {
  font-size: clamp(1.15rem, 2.2vw, 1.8rem);
}

.lead {
  max-width: 780px;
  color: var(--text);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: end;
}

.signal-panel,
.feature-card,
.speaker-card,
.guest-card,
.partner-card,
.team-roster,
.brand-strip,
.finale-section {
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(0, 41, 20, 0.84), rgba(0, 0, 0, 0.76)),
    rgba(0, 0, 0, 0.42);
  box-shadow: var(--shadow);
}

.signal-panel {
  padding: 1.3rem;
}

.signal-panel p {
  margin-top: 0;
  color: var(--lime);
  font-weight: 700;
  text-transform: uppercase;
}

.brand-strip {
  display: grid;
  grid-template-columns: minmax(240px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(1.5rem, 3vw, 2.4rem);
}

.brand-strip p {
  margin: 0;
  color: var(--muted);
}

.section-heading {
  max-width: 860px;
  margin-bottom: clamp(2rem, 5vw, 3.4rem);
}

.section-heading p {
  color: var(--muted);
  font-size: 1.05rem;
}

.doctrine-grid,
.speaker-grid,
.partner-grid {
  display: grid;
  gap: 1rem;
}

.doctrine-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
  min-height: 260px;
  padding: 1.2rem;
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: auto 1rem 1rem auto;
  width: 54px;
  height: 54px;
  border-right: 2px solid var(--green);
  border-bottom: 2px solid var(--green);
  opacity: 0.55;
}

.feature-number {
  display: inline-block;
  margin-bottom: 2rem;
}

.feature-card p {
  color: var(--muted);
}

.doctrine-quote {
  margin: 1rem 0 0;
  padding: clamp(1.2rem, 4vw, 2rem);
  border-left: 4px solid var(--green);
  background: rgba(0, 0, 0, 0.52);
}

.doctrine-quote span {
  display: block;
  color: var(--white);
  font-family: var(--display-font);
  font-size: clamp(1.5rem, 4vw, 3.2rem);
  line-height: 1.08;
  text-transform: uppercase;
}

.doctrine-quote cite {
  display: block;
  margin-top: 0.8rem;
  color: var(--lime);
  font-style: normal;
}

.team-roster {
  display: grid;
  grid-template-columns: minmax(240px, 0.6fr) minmax(0, 1.4fr);
  gap: clamp(1rem, 4vw, 2rem);
  margin-top: 1rem;
  padding: clamp(1.2rem, 3vw, 1.6rem);
}

.team-roster p {
  color: var(--muted);
}

.roster-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.roster-list li {
  margin: 0;
  overflow: hidden;
  padding: 0.7rem;
  border: 1px solid rgba(123, 214, 51, 0.18);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.26);
}

.roster-list img {
  width: 100%;
  aspect-ratio: 4 / 5;
  margin-bottom: 0.75rem;
  object-fit: cover;
  object-position: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.54);
}

.roster-list strong,
.roster-list span {
  display: block;
}

.roster-list strong {
  color: var(--white);
}

.roster-list span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.guest-card {
  display: grid;
  grid-template-columns: minmax(260px, 370px) minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: center;
  margin-bottom: 1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
}

.guest-card img,
.speaker-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.7);
}

.speaker-title {
  margin: 0.8rem 0;
  color: var(--lime);
  font-weight: 700;
}

.speaker-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
}

.speaker-card {
  overflow: hidden;
}

.speaker-card.is-keynote {
  grid-column: auto;
  display: block;
}

.speaker-card.is-keynote img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.speaker-copy {
  padding: 1rem;
}

.speaker-copy p,
.guest-card p {
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1rem 0;
}

.tag-row span {
  border: 1px solid rgba(123, 214, 51, 0.3);
  border-radius: 999px;
  padding: 0.35rem 0.55rem;
  color: var(--white);
  background: rgba(36, 196, 71, 0.08);
  font-size: 0.78rem;
}

details {
  margin-top: 1rem;
  color: var(--muted);
}

summary {
  cursor: pointer;
  width: fit-content;
  color: var(--white);
  font-weight: 700;
}

details[open] summary {
  color: var(--lime);
}

.partner-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.partner-card {
  padding: 1.2rem;
}

.partner-card p,
.partner-card li {
  color: var(--muted);
}

.partner-card h3 {
  min-height: 2.3em;
  color: var(--white);
}

.metric-list {
  padding-left: 0;
  list-style: none;
}

.metric-list li {
  padding: 0.4rem 0;
  border-top: 1px solid rgba(123, 214, 51, 0.15);
}

.metric-list strong {
  color: var(--lime);
  font-family: var(--display-font);
  font-size: 1.15rem;
}

.small-copy {
  font-size: 0.92rem;
}

.finale-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.5rem, 4vw, 2.4rem);
}

.finale-section p {
  max-width: 760px;
  color: var(--muted);
}

.finale-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem clamp(1rem, 4vw, 4rem);
  border-top: 1px solid rgba(123, 214, 51, 0.16);
  color: var(--muted);
  background: rgba(0, 0, 0, 0.78);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--lime);
  font-weight: 700;
}

@media (max-width: 980px) {
  .site-header {
    align-items: center;
    flex-wrap: wrap;
    gap: 0.7rem;
  }

  .nav-links {
    order: 1;
    width: 100%;
    overflow-x: auto;
    justify-content: center;
    padding-top: 0.2rem;
    scrollbar-width: thin;
  }

  .nav-cta {
    order: 2;
  }

  .split-layout,
  .brand-strip,
  .guest-card,
  .team-roster,
  .finale-section {
    grid-template-columns: 1fr;
  }

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

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

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

  .finale-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 680px) {
  html {
    scroll-padding-top: 116px;
  }

  .hero-banner {
    min-height: 0;
  }

  .hero-banner img {
    height: auto;
    min-height: 0;
    object-fit: contain;
  }

  .site-header {
    gap: 0.75rem;
    padding: 0.7rem 0.75rem;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 0.9rem;
    padding-bottom: 0.15rem;
    font-size: 0.9rem;
  }

  .nav-links a {
    flex: 0 0 auto;
  }

  .nav-cta {
    width: 100%;
  }

  .section {
    width: min(100% - 1rem, 1180px);
    padding: 3rem 0;
  }

  .doctrine-grid,
  .speaker-grid,
  .partner-grid,
  .roster-list,
  .speaker-card.is-keynote {
    grid-template-columns: 1fr;
  }

  .guest-card,
  .speaker-copy,
  .feature-card,
  .partner-card,
  .team-roster,
  .signal-panel,
  .brand-strip,
  .finale-section {
    padding: 1rem;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}