button,
a,
.card,
.hero-panel,
.mistakes-panel,
.founder-panel,
.advisory-panel,
.menu-toggle,
.case-study-card,
.case-meta-card,
.case-summary-card,
.case-list-card,
.case-reference-card,
.case-callout,
.case-note-card {
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    opacity var(--transition-fast);
}

/* Header */

#site-header {
  position: sticky;
  top: 0;
  z-index: 300;
}

.site-header {
  position: relative;
  z-index: 300;
  background: rgba(248, 250, 252, 0.72);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid rgba(11, 15, 25, 0.06);
  box-shadow: 0 6px 24px rgba(11, 15, 25, 0.035);
}

.header-inner {
  min-height: var(--header-height-desktop);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  height: var(--logo-height-desktop);
  width: auto;
  display: block;
  object-fit: contain;
}

.site-nav {
  min-width: 0;
  display: flex;
  align-items: center;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--secondary);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.site-nav a.is-active {
  color: var(--text);
}

.site-nav a:not(.nav-cta).is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
}

/* Buttons */

.nav-cta,
.button-primary,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
}

.nav-cta,
.button-primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff !important;
  border-color: rgba(29, 78, 216, 0.22);
  box-shadow: 0 12px 28px rgba(29, 78, 216, 0.18);
}

.nav-cta:hover,
.nav-cta:focus-visible,
.button-primary:hover,
.button-primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(29, 78, 216, 0.22);
}

.nav-cta.is-active {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff !important;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
  border-color: rgba(11, 15, 25, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(11, 15, 25, 0.22);
  background: rgba(255, 255, 255, 0.9);
}

/* Mobile menu */

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(11, 15, 25, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.menu-toggle:hover,
.menu-toggle:focus-visible {
  border-color: rgba(11, 15, 25, 0.2);
  background: rgba(255, 255, 255, 0.96);
}

.menu-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transform-origin: center;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.site-header.menu-open .menu-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.menu-open .menu-toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .menu-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Shared cards / panels */

.card,
.case-meta-card,
.case-summary-card,
.case-list-card,
.case-reference-card,
.case-callout,
.case-nav-card,
.case-note-card,
.case-study-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 250, 252, 0.94) 100%);
  border: 1px solid rgba(11, 15, 25, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card {
  padding: 30px;
}

.card:hover,
.mistakes-panel:hover,
.founder-panel:hover,
.advisory-panel:hover,
.case-study-card:hover,
.case-study-card:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  border-radius: 999px;
  background: rgba(29, 78, 216, 0.08);
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 700;
}

.hero-panel {
  position: sticky;
  top: 118px;
  align-self: start;
}

.hero-panel-inner {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(244, 247, 251, 0.96) 100%);
  border: 1px solid rgba(11, 15, 25, 0.08);
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: var(--shadow-lg);
}

.hero-panel-inner::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(29, 78, 216, 0.35), rgba(29, 78, 216, 0));
}

.panel-title {
  font-size: 1.28rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
  max-width: 15ch;
}

.signal-list {
  display: grid;
  gap: 14px;
}

.signal-item {
  padding-top: 16px;
  border-top: 1px solid rgba(11, 15, 25, 0.08);
}

.signal-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.signal-label {
  margin-bottom: 7px;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--text);
}

.mistakes-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 250, 252, 0.94) 100%);
  border: 1px solid rgba(11, 15, 25, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.mistakes-column {
  padding: 32px;
}

.mistakes-column + .mistakes-column {
  border-left: 1px solid rgba(11, 15, 25, 0.08);
  background: linear-gradient(180deg, rgba(241, 245, 249, 0.88) 0%, rgba(248, 250, 252, 0.88) 100%);
}

.mistakes-column ul {
  margin: 0;
  padding-left: 20px;
  color: var(--secondary-dark);
}

.mistakes-column li + li {
  margin-top: 10px;
}

.founder-panel,
.advisory-panel {
  margin-top: 26px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 250, 252, 0.94) 100%);
  border: 1px solid rgba(11, 15, 25, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.founder-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 30px;
  padding: 34px;
}

.founder-meta {
  min-width: 0;
  padding: 22px;
  border: 1px solid rgba(11, 15, 25, 0.08);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(241, 245, 249, 0.88) 0%, rgba(255, 255, 255, 0.88) 100%);
}

.founder-name {
  margin: 0;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.advisory-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 34px;
}

.advisory-button {
  flex-shrink: 0;
}

.site-footer {
  padding: 30px 0 42px;
  border-top: 1px solid rgba(11, 15, 25, 0.08);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--secondary);
  font-size: 0.94rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--secondary);
}

.footer-inner a:hover,
.footer-inner a:focus-visible {
  color: var(--text);
}

@media (max-width: 1100px) {
  .hero-panel {
    position: relative;
    top: auto;
  }

  .cards-grid,
  .founder-panel {
    grid-template-columns: 1fr;
  }

  .advisory-panel {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 780px) {
  #site-header {
    top: 0;
  }

  .header-inner {
    min-height: var(--header-height-mobile);
    gap: 14px;
  }

  .brand img {
    height: var(--logo-height-mobile);
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% - 2px);
    left: 0;
    right: 0;
    display: none;
    padding-top: 10px;
  }

  .site-header.menu-open .site-nav {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 18px;
    border: 1px solid rgba(11, 15, 25, 0.08);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
  }

  .site-nav a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0 2px;
    font-size: 0.98rem;
  }

  .site-nav a:not(.nav-cta).is-active::after {
    left: 0;
    right: auto;
    width: 26px;
    bottom: 2px;
  }

  .nav-cta {
    width: 100%;
    min-height: 46px;
    margin-top: 4px;
  }

  .button-primary,
  .button-secondary,
  .advisory-button {
    width: 100%;
  }

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

  .mistakes-column + .mistakes-column {
    border-left: 0;
    border-top: 1px solid rgba(11, 15, 25, 0.08);
  }

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

  .card,
  .mistakes-column,
  .founder-panel,
  .advisory-panel,
  .hero-panel-inner {
    padding-left: 22px;
    padding-right: 22px;
  }
}

@media (min-width: 781px) {
  .site-nav {
    display: flex !important;
  }
}