* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  padding-top: 4rem;
  background: var(--color-pitch-black);
  color: var(--color-porcelain);
  font-family: var(--font-inter-variable);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  font-feature-settings: "cv01" 1, "ss03" 1;
}

section[id] {
  scroll-margin-top: 5rem;
}

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

button,
a,input {
  font: inherit;
}

::selection {
  background: var(--color-neon-lime);
  color: var(--color-pitch-black);
}

label.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.bg-canvas {
  background: var(--color-pitch-black);
}

.text-porcelain {
  color: var(--color-porcelain);
}

.text-light-steel {
  color: var(--color-light-steel);
}

.text-storm-cloud {
  color: var(--color-storm-cloud);
}

.text-charcoal {
  color: var(--color-charcoal-grey);
}

.border-charcoal {
  border-color: rgba(255, 255, 255, 0.12);
}

.accent-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--radius-md);
  background: var(--color-neon-lime);
  color: var(--color-pitch-black);
  padding: 0.85rem 1.4rem;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.accent-button:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.input-field {
  min-height: 3rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-porcelain);
  padding: 0.85rem 1rem;
}

.input-field::placeholder {
  color: var(--color-storm-cloud);
}

.input-field:focus {
  outline: none;
  border-color: rgba(228, 242, 34, 0.7);
  box-shadow: 0 0 0 4px rgba(228, 242, 34, 0.12);
}

.field-input {
  min-height: 3rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--color-graphite);
  color: var(--color-porcelain);
  padding: 0.875rem 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field-input::placeholder {
  color: var(--color-storm-cloud);
}

.field-input:focus {
  outline: none;
  border-color: rgba(228, 242, 34, 0.7);
  box-shadow: 0 0 0 4px rgba(228, 242, 34, 0.12);
}

.hero-panel,
.feature-card,
.panel,
.pricing-card,
.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-panel {
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.feature-card,
.panel,
.pricing-card,
.faq-item {
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover,
.panel:hover,
.pricing-card:hover,
.faq-item:hover {
  transform: translateY(-2px);
  border-color: rgba(228, 242, 34, 0.2);
}

.label-pill,
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  padding: 0.4rem 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-storm-cloud);
}

.panel ul li,
.pricing-card ul li {
  line-height: 1.8;
}

.summary {
  list-style: none;
}

details summary {
  cursor: pointer;
  list-style: none;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::after {
  content: "▾";
  display: inline-block;
  margin-left: 0.75rem;
  color: var(--color-storm-cloud);
  transition: transform 0.2s ease;
}

details[open] summary::after {
  transform: rotate(180deg);
}

@media (max-width: 640px) {
  .hero-panel,
  .feature-card,
  .panel,
  .pricing-card,
  .faq-item {
    border-radius: 14px;
  }
}