:root {
  --timeline-line-width: 4px;
}

.system-development-page {
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
}

.system-development-page section {
  width: min(1200px, 92%);
  margin: 0 auto;
  padding: 96px 0;
}

.system-dev-hero {
  width: 100%;
  margin: 0;
  padding: 140px 0 120px;
  background: radial-gradient(circle at top left, rgba(16, 76, 158, 0.16), transparent 55%),
    linear-gradient(135deg, var(--md-sys-color-surface-container-highest), var(--md-sys-color-surface-container));
  position: relative;
  overflow: hidden;
}

.system-dev-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(9, 132, 227, 0.15), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(84, 160, 255, 0.12), transparent 55%);
  pointer-events: none;
}

.system-dev-hero .hero-inner {
  position: relative;
  width: min(1080px, 92%);
  margin: 0 auto;
  text-align: left;
}

.hero-eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: rgba(9, 132, 227, 0.16);
  color: var(--md-sys-color-primary);
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: var(--md-sys-typescale-label-large-font-weight);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.system-dev-hero h1 {
  font-size: clamp(2.5rem, 4vw, 3.4rem);
  font-weight: var(--md-sys-typescale-display-medium-font-weight);
  margin: 0 0 24px;
}

.hero-lead {
  font-size: 1.125rem;
  line-height: 1.8;
  max-width: 720px;
  margin: 0 0 32px;
  color: var(--md-sys-color-on-surface-variant);
}

.hero-subtext {
  font-size: 1rem;
  line-height: 1.75;
  max-width: 760px;
  margin: 0 0 36px;
  color: var(--md-sys-color-on-surface);
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-highlights span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: 600;
}

.hero-cta {
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: var(--md-sys-typescale-label-large-font-weight);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--md-sys-color-primary);
  background-color: rgba(9, 132, 227, 0.12);
  border-radius: var(--md-sys-shape-corner-full);
  padding: 6px 14px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin: 8px 0 12px;
}

.section-header p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.7;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.capability-card {
  position: relative;
  background: radial-gradient(circle at top right, rgba(9, 132, 227, 0.24), transparent 60%),
    linear-gradient(170deg, var(--md-sys-color-surface-container-low) 0%, var(--md-sys-color-surface) 100%);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 36px 32px 32px;
  box-shadow:
    0px 1px 2px rgba(0, 0, 0, 0.24),
    0px 12px 24px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(9, 132, 227, 0.12);
  text-align: left;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.capability-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(9, 132, 227, 0.16), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.capability-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0px 16px 40px rgba(9, 132, 227, 0.22),
    0px 8px 20px rgba(0, 0, 0, 0.16);
}

.capability-card:hover::after {
  opacity: 1;
}

.capability-card-header {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.capability-card-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  border-radius: var(--md-sys-shape-corner-full);
  background: linear-gradient(135deg, rgba(9, 132, 227, 0.75), rgba(9, 132, 227, 0.35));
  color: var(--md-sys-color-on-primary);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.capability-card h3 {
  font-size: 1.28rem;
  margin: 0;
  color: var(--md-sys-color-on-surface);
}

.capability-items {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
}

.capability-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--md-sys-shape-corner-full);
  background: rgba(9, 132, 227, 0.14);
  border: 1px solid rgba(9, 132, 227, 0.24);
  color: var(--md-sys-color-primary);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.capability-description {
  margin: 0;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.7;
}

.system-dev-achievements {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-radius: clamp(32px, 5vw, 48px);
  padding-left: clamp(24px, 6vw, 64px);
  padding-right: clamp(24px, 6vw, 64px);
}

.achievement-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding-left: clamp(16px, 5vw, 32px);
  padding-right: clamp(16px, 5vw, 32px);
}

.achievement-card {
  background-color: var(--md-sys-color-surface);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 32px;
  border: 1px solid rgba(9, 132, 227, 0.1);
  box-shadow:
    0px 1px 2px rgba(0, 0, 0, 0.18),
    0px 4px 12px rgba(0, 0, 0, 0.08);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.achievement-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9, 132, 227, 0.08), transparent 60%);
  opacity: 0.6;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.achievement-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0px 16px 38px rgba(9, 132, 227, 0.18),
    0px 10px 24px rgba(0, 0, 0, 0.16);
}

.achievement-card:hover::after {
  opacity: 0.9;
}

.achievement-card h3 {
  font-size: 1.2rem;
  margin: 0 0 16px;
  position: relative;
}

.achievement-summary {
  margin: 0 0 20px;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.7;
  position: relative;
}

.achievement-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.achievement-summary + .achievement-meta {
  margin-top: 12px;
}

.achievement-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--md-sys-shape-corner-full);
  background: linear-gradient(135deg, rgba(9, 132, 227, 0.16), rgba(9, 132, 227, 0.04));
  border: 1px solid rgba(9, 132, 227, 0.24);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  color: var(--md-sys-color-primary);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.achievement-stack {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--md-sys-color-primary);
  position: relative;
}

.system-dev-flow {
  position: relative;
}

.timeline {
  position: relative;
  display: grid;
  gap: 48px;
  margin-top: 64px;
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: clamp(32px, 6vw, 96px);
  width: var(--timeline-line-width);
  background: linear-gradient(180deg, rgba(9, 132, 227, 0), rgba(9, 132, 227, 0.35) 12%, rgba(9, 132, 227, 0.35) 88%, rgba(9, 132, 227, 0));
  border-radius: var(--timeline-line-width);
}

.timeline-item {
  display: grid;
  grid-template-columns: clamp(80px, 10vw, 120px) 1fr;
  gap: 32px;
  align-items: flex-start;
  position: relative;
}

.timeline-marker {
  width: clamp(80px, 10vw, 120px);
  height: clamp(80px, 10vw, 120px);
  border-radius: var(--md-sys-shape-corner-circle, 999px);
  background: linear-gradient(145deg, var(--md-sys-color-primary) 0%, var(--md-sys-color-primary-container) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0px 8px 20px rgba(9, 132, 227, 0.28),
    0px 3px 8px rgba(9, 132, 227, 0.16);
  position: relative;
  z-index: 1;
}

.marker-number {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--md-sys-color-on-primary);
}

.timeline-card {
  background-color: var(--md-sys-color-surface);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 32px;
  border: 1px solid rgba(9, 132, 227, 0.14);
  box-shadow:
    0px 12px 30px rgba(15, 23, 42, 0.10),
    0px 4px 12px rgba(15, 23, 42, 0.06);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9, 132, 227, 0.18), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.timeline-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0px 22px 44px rgba(9, 132, 227, 0.16),
    0px 12px 28px rgba(15, 23, 42, 0.14);
}

.timeline-card:hover::after {
  opacity: 0.85;
}

.timeline-card h3 {
  font-size: 1.35rem;
  margin: 0 0 16px;
}

.timeline-description {
  margin: 0 0 18px;
  line-height: 1.8;
  color: var(--md-sys-color-on-surface-variant);
}

.timeline-focus {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 10px 16px;
  border-radius: var(--md-sys-shape-corner-large);
  background-color: rgba(9, 132, 227, 0.12);
  color: var(--md-sys-color-primary);
  font-weight: 600;
}

.timeline-focus span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 70px;
  height: 26px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0 12px;
}

.system-dev-support {
  width: min(1080px, 92%);
  margin: 0 auto 120px;
  padding: 0;
}

.support-card {
  background: linear-gradient(135deg, rgba(9, 132, 227, 0.16), rgba(9, 132, 227, 0.05));
  border-radius: clamp(32px, 5vw, 40px);
  padding: clamp(36px, 6vw, 56px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  border: 1px solid rgba(9, 132, 227, 0.18);
  box-shadow:
    0px 16px 40px rgba(9, 132, 227, 0.18),
    0px 4px 12px rgba(9, 132, 227, 0.12);
}

.support-card h2 {
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  margin: 0 0 20px;
}

.support-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.support-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--md-sys-color-on-surface);
}

.support-points li::before {
  content: '\2713';
  color: var(--md-sys-color-primary);
  font-weight: 700;
  margin-top: 2px;
}

.support-cta {
  display: flex;
  align-items: center;
}

.btn-modern-filled .arrow-icon {
  flex-shrink: 0;
}

.btn-modern-filled.btn-glass-pill {
  position: relative;
  padding: 14px 36px;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.22) 0%, rgba(148, 217, 255, 0.12) 45%, rgba(12, 82, 177, 0.24) 100%);
  color: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(164, 218, 255, 0.55);
  border-radius: var(--md-sys-shape-corner-full);
  box-shadow:
    0px 18px 36px rgba(12, 82, 177, 0.18),
    inset 0px 1px 0px rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  text-transform: none;
  letter-spacing: 0.04em;
  overflow: hidden;
  isolation: isolate;
  z-index: 0;
  flex-wrap: nowrap;
  justify-content: center;
}

.btn-modern-filled.btn-glass-pill::before {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.28) 0%, transparent 55%);
  opacity: 0.78;
  pointer-events: none;
  z-index: 0;
}

.btn-modern-filled.btn-glass-pill::after {
  content: '';
  position: absolute;
  top: -120%;
  left: -20%;
  width: 60%;
  height: 300%;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.35) 45%, transparent 100%);
  transform: rotate(18deg) translate3d(0, 0, 0);
  opacity: 0;
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
  z-index: 0;
}

.btn-modern-filled.btn-glass-pill:hover {
  transform: translateY(-4px);
  box-shadow:
    0px 26px 52px rgba(12, 82, 177, 0.24),
    inset 0px 1px 0px rgba(255, 255, 255, 0.4);
  filter: none;
}

.btn-modern-filled.btn-glass-pill:hover::after {
  opacity: 1;
  transform: rotate(18deg) translate3d(10%, 0, 0);
}

.btn-modern-filled.btn-glass-pill > * {
  position: relative;
  z-index: 1;
}

.btn-modern-filled.btn-glass-pill span {
  white-space: nowrap;
}

.btn-modern-filled.btn-glass-pill:focus-visible {
  outline: 2px solid rgba(164, 218, 255, 0.8);
  outline-offset: 3px;
}

.btn-modern-filled.btn-glass-pill .arrow-icon {
  color: inherit;
}

@media (max-width: 1024px) {
  .system-development-page section {
    padding: 72px 0;
  }

  .timeline-item {
    grid-template-columns: clamp(72px, 12vw, 96px) 1fr;
  }

  .timeline-card {
    padding: 28px;
  }
}

@media (max-width: 768px) {
  .system-development-page section {
    padding: 64px 0;
  }

  .system-dev-hero {
    padding: 120px 0 96px;
  }

  .hero-highlights span {
    width: 100%;
    justify-content: center;
  }

  .capability-card,
  .achievement-card {
    padding: 24px;
  }

  .capability-card-header {
    gap: 10px;
  }

  .capability-card-index {
    min-width: 38px;
    height: 38px;
    font-size: 0.85rem;
  }

  .capability-items {
    gap: 8px;
  }

  .timeline {
    gap: 40px;
  }

  .timeline-line {
    left: 28px;
  }

  .timeline-item {
    grid-template-columns: 64px 1fr;
    gap: 24px;
  }

  .timeline-marker {
    width: 64px;
    height: 64px;
  }

  .support-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .support-cta {
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .timeline-line {
    display: none;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .timeline-marker {
    margin: 0 auto;
  }

  .timeline-card {
    text-align: center;
  }

  .timeline-focus {
    justify-content: center;
  }
}