:root {
  --bg: #0f172a;
  --panel: #111827;
  --muted: #94a3b8;
  --accent: #fbbf24;
  --accent-strong: #f59e0b;
  --surface: #1f2937;
  --border: #1e293b;
  --text: #e2e8f0;
  --radius: 16px;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(251, 191, 36, 0.08), transparent 25%),
    radial-gradient(circle at 80% 0%, rgba(94, 234, 212, 0.08), transparent 30%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease, text-shadow 0.15s ease;
}

a:hover {
  color: var(--accent-strong);
  text-shadow: 0 0 12px rgba(251, 191, 36, 0.25);
}

p {
  margin: 0 0 0.6rem;
  color: var(--muted);
}

code {
  display: inline-block;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  border: 1px solid rgba(251, 191, 36, 0.28);
  background: rgba(251, 191, 36, 0.08);
  color: #fcd34d;
  font-size: 0.78rem;
  line-height: 1.4;
}

h1,
h2,
h3 {
  margin: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 18px;
  padding: 10px 20px;
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(14px) saturate(120%);
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.brand {
  display: flex;
  align-items: center;
  align-self: center;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding-bottom: 0;
  position: relative;
  z-index: 1;
}

.brand-logo {
  display: block;
  width: 46px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  width: 100%;
  margin-left: 0;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(17, 24, 39, 0.65);
}

.nav a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav a:hover {
  color: var(--text);
  border-color: rgba(251, 191, 36, 0.32);
  background: rgba(251, 191, 36, 0.12);
  text-shadow: none;
}

.nav a:focus-visible {
  outline: none;
  border-color: rgba(251, 191, 36, 0.55);
  box-shadow: 0 0 0 2px rgba(251, 191, 36, 0.14);
  color: var(--text);
}

main {
  max-width: 1100px;
  margin: 0 auto 32px;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, rgba(17, 24, 39, 0.95), rgba(17, 24, 39, 0.84));
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(251, 191, 36, 0.75), rgba(251, 191, 36, 0));
  opacity: 0.7;
}

.hero {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr;
  align-items: end;
  gap: 24px;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  margin-bottom: 8px;
}

.hero h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  letter-spacing: -0.02em;
}

.hero-copy p {
  max-width: 66ch;
}

.ai-power-art img {
  width: 100%;
  display: block;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.28);
  background: #0b0f18;
}

h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.story blockquote {
  margin: 1rem 0 0;
  border-left: 3px solid rgba(251, 191, 36, 0.7);
  background: rgba(11, 18, 32, 0.9);
  border-radius: 10px;
  padding: 0.95rem 1rem;
  color: #cbd5e1;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.92), rgba(31, 41, 55, 0.72));
  padding: 14px;
  box-shadow: inset 0 1px 0 rgba(251, 191, 36, 0.08);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(251, 191, 36, 0.36);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(251, 191, 36, 0.18);
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.98), rgba(31, 41, 55, 0.8));
}

.card p {
  margin: 0.2rem 0 0;
}

.feature-source {
  margin-top: 0.65rem;
  font-size: 0.85rem;
  color: #9fb1c4;
}

.facts-grid {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.fact-item {
  margin: 0;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.9), rgba(31, 41, 55, 0.72));
  padding: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.fact-item:hover {
  transform: translateY(-2px);
  border-color: rgba(251, 191, 36, 0.34);
}

.fact-item dt {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.76rem;
  font-weight: 600;
}

.fact-item dd {
  margin: 0.35rem 0 0;
  color: var(--text);
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.faq-item {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.9), rgba(31, 41, 55, 0.72));
  padding: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.faq-item:hover {
  transform: translateY(-2px);
  border-color: rgba(251, 191, 36, 0.34);
}

.faq-item p {
  margin-top: 0.4rem;
}

.sdlc-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 10px;
}

.flow-step {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.9), rgba(31, 41, 55, 0.74));
  padding: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.flow-step:hover {
  transform: translateY(-2px);
  border-color: rgba(251, 191, 36, 0.3);
}

.flow-label {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 600;
}

.flow-arrow {
  align-self: center;
  justify-self: center;
  color: rgba(251, 191, 36, 0.92);
  font-size: 0;
  font-weight: 700;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(251, 191, 36, 0.3);
  background: rgba(251, 191, 36, 0.1);
  display: grid;
  place-items: center;
}

.flow-arrow::before {
  content: "\2192";
  font-size: 1.3rem;
  line-height: 1;
  transform: translateY(1px);
}

.sdlc-link {
  margin-top: 0.3rem;
  color: #c7d2e2;
}

.ai-power {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 20px;
}

.ai-power-copy ul {
  margin: 0;
  padding-left: 1.2rem;
}

.ai-power-copy li {
  margin-bottom: 0.55rem;
  color: var(--muted);
}

.ai-power-copy strong,
.story strong,
.features strong {
  color: var(--text);
}

.footer {
  max-width: 1100px;
  margin: 0 auto 24px;
  padding: 10px 20px 0;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  color: var(--muted);
  font-size: 0.92rem;
}

.hero,
.story,
.platform,
.features,
.sdlc,
.ai-power,
.facts,
.faq {
  animation: rise 420ms ease both;
}

.story {
  animation-delay: 80ms;
}

.platform {
  animation-delay: 120ms;
}

.features {
  animation-delay: 140ms;
}

.sdlc {
  animation-delay: 150ms;
}

.ai-power {
  animation-delay: 170ms;
}

.facts {
  animation-delay: 185ms;
}

.faq {
  animation-delay: 200ms;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 920px) {
  .hero,
  .ai-power {
    grid-template-columns: 1fr;
  }

  .topbar {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 8px;
  }

  .nav {
    width: 100%;
    justify-content: center;
    margin-left: 0;
  }

  .sdlc-flow {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .flow-arrow {
    display: none;
  }

  .facts-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav {
    justify-content: flex-start;
    border-radius: 16px;
    gap: 8px;
    padding: 8px;
  }

  .nav a {
    font-size: 0.88rem;
    flex: 1 1 calc(50% - 8px);
    text-align: center;
  }

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

@media (max-width: 460px) {
  .nav a {
    flex-basis: 100%;
  }
}