:root {
  --bg: #171d31;
  --panel: #1d233b;
  --panel-alt: #222947;
  --text: #f3f5ff;
  --muted: #adb5d4;
  --line: rgba(255, 255, 255, 0.08);
  --cyan: #31d6ff;
  --magenta: #d86bff;
  --radius-xl: 28px;
  --radius-lg: 20px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Plus Jakarta Sans", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(216, 107, 255, 0.18), transparent 18%),
    radial-gradient(circle at bottom right, rgba(49, 214, 255, 0.16), transparent 18%),
    linear-gradient(180deg, #14192b, #1a2137);
}

.topbar {
  width: min(1240px, calc(100vw - 40px));
  margin: 24px auto -8px;
  display: flex;
  justify-content: flex-end;
}

.language-switcher {
  display: flex;
  gap: 8px;
}

.lang-button {
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(12, 17, 32, 0.78);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.lang-button.is-active {
  border-color: rgba(49, 214, 255, 0.35);
  background: linear-gradient(135deg, rgba(49, 214, 255, 0.16), rgba(216, 107, 255, 0.14));
}

.manual-page {
  width: min(1240px, calc(100vw - 40px));
  margin: 28px auto 40px;
}

.manual-hero,
.manual-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(24, 30, 50, 0.96), rgba(20, 26, 45, 0.98));
  box-shadow: 0 26px 50px rgba(0, 0, 0, 0.24);
}

.manual-hero {
  padding: 28px;
}

.manual-jumpbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.jump-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: 0.2s ease;
}

.jump-link:hover {
  border-color: rgba(49, 214, 255, 0.28);
  color: #ffffff;
  background: linear-gradient(135deg, rgba(49, 214, 255, 0.12), rgba(216, 107, 255, 0.14));
}

.manual-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 26px;
}

.manual-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.back-link,
.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}

.back-link,
.secondary-link {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.primary-link {
  color: #ffffff;
  background: linear-gradient(135deg, #d86bff, #7f7eff);
}

.hero-grid,
.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 22px;
}

.hero-copy h1,
.section-head h2,
.manual-card h2,
.part-card h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 4vw, 4.1rem);
  line-height: 0.96;
  max-width: 10ch;
  margin: 10px 0 18px;
}

.hero-copy p,
.manual-card p,
.part-card p {
  color: var(--muted);
  line-height: 1.7;
}

.eyebrow {
  margin: 0;
  color: #c582ff;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-visual,
.part-card {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.hero-image {
  width: min(360px, 100%);
  height: auto;
}

.hero-parts-card {
  align-items: stretch;
  justify-content: stretch;
  padding: 24px;
}

.hero-parts-content {
  width: 100%;
}

.hero-parts-title {
  margin: 10px 0 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.7rem;
}

.hero-parts-list {
  margin-top: 18px;
}

.hero-parts-list li {
  padding: 8px 0;
}

.hero-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.note-card {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}

.note-card span {
  display: block;
  margin-bottom: 6px;
  font-size: 0.78rem;
  color: var(--muted);
}

.manual-content {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}

.manual-section {
  display: grid;
  gap: 18px;
}

.manual-card {
  padding: 24px;
}

.section-head {
  padding: 0 4px;
}

.parts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.compact-parts-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.part-card {
  flex-direction: column;
  padding: 22px;
  text-align: center;
}


.part-image {
  width: min(220px, 100%);
  height: auto;
  margin-bottom: 16px;
}

.wide-card {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 20px;
  align-items: center;
}

.diagram-image {
  width: 100%;
  padding: 16px;
  background: #ffffff;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.inline-part-image {
  width: min(260px, 100%);
  margin-top: 12px;
  margin-bottom: 8px;
  padding: 14px;
  background: #ffffff;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.manual-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.manual-list a {
  color: var(--text);
}

.support-note {
  margin-top: 16px;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
}

.component-link-list a {
  color: var(--text);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.18em;
}

.component-link-list li {
  padding: 10px 12px;
  margin-bottom: 8px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.component-link-list li:last-child {
  margin-bottom: 0;
}

.component-link-list a:hover {
  color: var(--cyan);
}

.component-link-list .micro-note {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.72rem;
  color: var(--muted);
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.compact-link {
  min-height: 44px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.step-card {
  position: relative;
  min-height: 220px;
  background:
    radial-gradient(circle at bottom right, rgba(49, 214, 255, 0.08), transparent 32%),
    linear-gradient(180deg, rgba(26, 33, 56, 0.98), rgba(20, 26, 44, 0.98));
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(216, 107, 255, 0.2), rgba(127, 126, 255, 0.18));
  color: #ffffff;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.step-card h3 {
  margin: 0 0 10px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.45rem;
}

.step-image {
  width: 100%;
  margin: 6px 0 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #ffffff;
}

@media (max-width: 980px) {
  .hero-grid,
  .section-grid,
  .wide-card,
  .parts-grid,
  .compact-parts-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .hero-notes {
    grid-template-columns: 1fr;
  }

  .manual-jumpbar {
    gap: 10px;
  }
}

@media (max-width: 720px) {
  .topbar {
    width: min(100vw - 18px, 100%);
    margin: 10px auto 4px;
  }

  .manual-page {
    width: min(100vw - 18px, 100%);
    margin: 10px auto 24px;
  }

  .manual-hero,
  .manual-card {
    padding: 18px;
    border-radius: 20px;
  }

  .manual-top {
    flex-direction: column;
    align-items: stretch;
  }

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