:root {
  --bg: #f4f7fb;
  --panel: rgba(255, 255, 255, 0.88);
  --text: #132238;
  --muted: #5e6c80;
  --line: rgba(19, 34, 56, 0.12);
  --accent: #1f5eff;
  --accent-strong: #123caa;
  --dark: #0e1726;
  --shadow: 0 24px 80px rgba(14, 23, 38, 0.10);
}

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

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(31, 94, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #edf3ff 0%, var(--bg) 42%, #eef2f7 100%);
}

a {
  text-decoration: none;
}

.site-shell {
  min-height: 100vh;
}

.brand-signature-wrap {
  padding: 24px 0 0;
}

.brand-signature {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border: 1px solid rgba(19, 34, 56, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  color: var(--muted);
  box-shadow: 0 10px 30px rgba(14, 23, 38, 0.06);
  backdrop-filter: blur(12px);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.brand-signature:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 36px rgba(14, 23, 38, 0.10);
  background: rgba(255, 255, 255, 0.8);
  color: var(--text);
}

.brand-signature img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: 8px;
  flex: 0 0 auto;
}

.brand-signature span {
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero-section {
  padding: 18px 0 24px;
}

.hero-panel {
  background:
    linear-gradient(135deg, rgba(18, 60, 170, 0.96), rgba(10, 18, 35, 0.96)),
    linear-gradient(160deg, rgba(255, 255, 255, 0.08), transparent 55%);
  color: #fff;
  border-radius: 32px;
  padding: 48px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -8% -20% auto;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  margin-bottom: 20px;
}

.hero-title {
  max-width: 780px;
  font-size: clamp(2.4rem, 4vw, 4.6rem);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 18px;
}

.hero-copy {
  max-width: 760px;
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.summary-section,
.prototype-section,
.note-section {
  padding: 24px 0 36px;
}

.summary-card,
.prototype-card,
.note-panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.summary-card {
  height: 100%;
  padding: 26px;
}

.summary-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.summary-value {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
}

.summary-card p,
.section-heading p,
.prototype-card p,
.note-panel p {
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2,
.note-panel h2 {
  font-size: clamp(1.9rem, 2.6vw, 3rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 12px 0 12px;
}

.section-kicker {
  color: var(--accent-strong);
}

.prototype-card {
  position: relative;
  height: 100%;
  padding: 28px;
  overflow: hidden;
}

.card-topline {
  width: 84px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #7bb0ff);
  margin-bottom: 22px;
}

.prototype-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.prototype-tag,
.prototype-path,
.note-list span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

.prototype-tag {
  background: rgba(31, 94, 255, 0.10);
  color: var(--accent-strong);
}

.prototype-path {
  background: rgba(19, 34, 56, 0.06);
  color: var(--muted);
}

.prototype-card h3 {
  font-size: 1.65rem;
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.prototype-points {
  margin: 18px 0 24px;
  padding-left: 18px;
  color: var(--text);
}

.prototype-points li {
  margin-bottom: 8px;
}

.prototype-actions {
  margin-top: auto;
}

.featured-card {
  background:
    linear-gradient(180deg, rgba(31, 94, 255, 0.06), rgba(255, 255, 255, 0.92)),
    var(--panel);
  border-color: rgba(31, 94, 255, 0.14);
}

.note-panel {
  padding: 32px;
}

.note-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.note-list span {
  background: rgba(19, 34, 56, 0.06);
  color: var(--text);
}

code {
  color: var(--accent-strong);
}

@media (max-width: 767.98px) {
  .hero-panel {
    padding: 32px 22px;
    border-radius: 24px;
  }

  .brand-signature {
    width: 100%;
    justify-content: center;
  }

  .prototype-card,
  .summary-card,
  .note-panel {
    padding: 24px;
    border-radius: 20px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }
}