body {
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.06), transparent 55%),
              radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.06), transparent 55%),
              var(--color-bg);
}

.mechanics-hero {
  padding-top: var(--space-32);
  padding-bottom: var(--space-24);
}

.mechanics-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: var(--space-16);
  align-items: center;
}

.mechanics-hero__actions {
  margin-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.mechanics-hero__meta {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.mechanics-hero__meta-text {
  opacity: 0.9;
}

.mechanics-hero__visual {
  display: flex;
  justify-content: center;
}

.mechanics-hero__board {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, #ffffff, #e0ecff);
  box-shadow: var(--shadow-lg);
  min-width: 260px;
}

.mechanics-hero__row {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.mechanics-hero__row--offset {
  justify-content: flex-end;
}

.mechanics-hero__hint {
  font-size: var(--font-size-xs);
  color: var(--gray-600);
  margin-top: var(--space-4);
}

.mechanics-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 248, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.mechanics-nav__inner {
  display: flex;
  justify-content: center;
}

.mechanics-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.mechanics-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--gray-700);
  box-shadow: var(--shadow-xs);
}

.mechanics-nav__link:hover {
  color: var(--color-primary);
  background-color: #ffffff;
}

.mechanics-section {
  scroll-margin-top: 96px;
}

.mechanics-section__header {
  max-width: 640px;
}

.mechanics-section__header--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.mechanics-section__aligned {
  align-items: center;
  gap: var(--space-16);
}

.mechanics-section__reverse {
  flex-direction: row-reverse;
}

.mechanics-section__media {
  display: flex;
  justify-content: center;
}

.mechanics-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-surface);
}

.mechanics-image-wrap img {
  width: 100%;
  height: auto;
}

.mechanics-image-wrap figcaption {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-xs);
  color: var(--gray-700);
  background: linear-gradient(to right, #f9fafb, #eef2ff);
}

.mechanics-image-wrap--shadow {
  box-shadow: var(--shadow-lg);
}

.mechanics-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mechanics-timeline__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: flex-start;
}

.mechanics-timeline__step {
  align-self: flex-start;
}

.mechanics-timeline h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}

.mechanics-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.mechanics-mini-card {
  height: 100%;
}

.mechanics-list {
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.mechanics-list--bulleted li + li {
  margin-top: var(--space-3);
}

.mechanics-list--bulleted li {
  position: relative;
  padding-left: var(--space-5);
}

.mechanics-list--bulleted li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background-color: var(--color-accent-purple);
}

.mechanics-note {
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  font-size: var(--font-size-sm);
}

.mechanics-note--info {
  background-color: rgba(37, 99, 235, 0.06);
  border: 1px solid rgba(37, 99, 235, 0.22);
}

.mechanics-note--tip {
  background-color: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.mechanics-note--warning {
  background-color: rgba(245, 158, 11, 0.06);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.mechanics-steps-grid {
  gap: var(--space-6);
}

.mechanics-step__icon {
  margin-bottom: var(--space-3);
}

.mechanics-step h3 {
  font-size: var(--font-size-lg);
}

.mechanics-board-grid {
  margin-top: var(--space-8);
}

.mechanics-board-card h3 {
  font-size: var(--font-size-xl);
}

.mechanics-faq {
  cursor: pointer;
}

.mechanics-faq .faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mechanics-faq .faq-item__answer {
  display: none;
}

.mechanics-faq.is-open .faq-item__answer {
  display: block;
}

.mechanics-difficulty-grid {
  margin-top: var(--space-8);
}

.mechanics-difficulty-card {
  position: relative;
  padding-top: var(--space-10);
}

.mechanics-difficulty-card__label {
  position: absolute;
  top: var(--space-6);
}

.mechanics-sidecard__cta {
  margin-top: var(--space-6);
}

.mechanics-sidecard__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.mechanics-cta-inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.mechanics-cta-inline__label {
  font-size: var(--font-size-sm);
  color: var(--gray-700);
}

.mechanics-cta-inline--right {
  justify-content: flex-end;
}

.mechanics-cta-center {
  text-align: center;
}

.mechanics-cta-center .button {
  margin-top: var(--space-4);
}

.mechanics-cta-final {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-10);
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.22), transparent 55%),
              radial-gradient(circle at bottom right, rgba(250, 204, 21, 0.25), transparent 55%),
              #0b1230;
  color: #ffffff;
}

.mechanics-cta-final h2 {
  color: #ffffff;
}

.mechanics-cta-final p {
  color: rgba(249, 250, 251, 0.92);
}

.mechanics-cta-final__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.mechanics-cta-final__actions .button--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

@media (max-width: 960px) {
  .mechanics-hero__layout {
    grid-template-columns: 1fr;
  }

  .mechanics-hero {
    padding-bottom: var(--space-20);
  }

  .mechanics-section__reverse {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .mechanics-nav__list {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: var(--space-3);
  }

  .mechanics-nav__link {
    white-space: nowrap;
  }

  .mechanics-cta-final {
    flex-direction: column;
    align-items: flex-start;
  }
}