/* ====================================================================
   喵喵云 (imiaomiaoyun.sbs) — Space Mission Control Conversion UI
   Naming Convention: Strict BEM
   Color Palette:
   - Background: #090F1D
   - Surface:    #151F33
   - Primary:    #F3F5FA
   - Secondary:  #8C9AB5
   - Accent:     #6CD9F0
   - Highlight:  #E7B96D
   ==================================================================== */

:root {
  --bg-deep: #090F1D;
  --surface-cabin: #151F33;
  --surface-elevated: #1C2944;
  --text-primary: #F3F5FA;
  --text-secondary: #8C9AB5;
  --accent-orbit: #6CD9F0;
  --highlight-mission: #E7B96D;
  --border-line: rgba(108, 217, 240, 0.22);
  --border-subtle: rgba(140, 154, 181, 0.18);
  --border-highlight: rgba(231, 185, 109, 0.55);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "PingFang SC", "Microsoft YaHei", monospace;
  --container-max: 1160px;
  --header-height: 68px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(108, 217, 240, 0.07) 0%, transparent 42%),
    radial-gradient(circle at 82% 28%, rgba(231, 185, 109, 0.05) 0%, transparent 38%),
    linear-gradient(rgba(140, 154, 181, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 154, 181, 0.04) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

a {
  color: var(--accent-orbit);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

a:hover {
  color: var(--highlight-mission);
}

:focus-visible {
  outline: 2px solid var(--accent-orbit);
  outline-offset: 3px;
}

.layout-shell {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent-orbit);
  color: var(--bg-deep);
  font-weight: 700;
  padding: 10px 18px;
  z-index: 1000;
  border-radius: 4px;
}

.skip-link:focus {
  top: 12px;
}

/* ====================================================================
   HEADER
   ==================================================================== */
.orbit-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-height);
  background: rgba(9, 15, 29, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-line);
}

.orbit-header__inner {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.orbit-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  min-height: 44px;
}

.orbit-header__brand:hover {
  color: var(--accent-orbit);
}

.orbit-header__brand-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-orbit);
  border: 1px solid var(--border-line);
  background: rgba(21, 31, 51, 0.85);
  padding: 2px 8px;
  border-radius: 3px;
}

.orbit-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 12px;
  background: var(--surface-cabin);
  border: 1px solid var(--border-line);
  color: var(--text-primary);
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.orbit-header__nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--surface-cabin);
  border-bottom: 1px solid var(--border-line);
  padding: 16px 20px;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.45);
}

.orbit-header__nav--open {
  display: flex;
}

.orbit-header__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 12px;
  color: var(--text-primary);
  font-size: 0.95rem;
  border-radius: 4px;
}

.orbit-header__link:hover,
.orbit-header__link--active {
  color: var(--accent-orbit);
  background: rgba(108, 217, 240, 0.08);
}

.orbit-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 18px;
  background: var(--accent-orbit);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 0.92rem;
  border-radius: 4px;
}

.orbit-header__cta:hover {
  background: var(--highlight-mission);
  color: var(--bg-deep);
}

/* ====================================================================
   BUTTONS
   ==================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 26px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.btn--primary {
  background: var(--accent-orbit);
  color: var(--bg-deep);
  box-shadow: 0 0 20px rgba(108, 217, 240, 0.25);
}

.btn--primary:hover,
.btn--primary:active {
  background: var(--highlight-mission);
  color: var(--bg-deep);
  box-shadow: 0 0 26px rgba(231, 185, 109, 0.4);
  transform: translateY(-1px);
}

.btn--secondary {
  background: rgba(21, 31, 51, 0.85);
  color: var(--text-primary);
  border-color: var(--border-line);
}

.btn--secondary:hover,
.btn--secondary:active {
  border-color: var(--accent-orbit);
  color: var(--accent-orbit);
  background: rgba(108, 217, 240, 0.08);
}

.btn--highlight {
  background: var(--highlight-mission);
  color: var(--bg-deep);
  box-shadow: 0 0 22px rgba(231, 185, 109, 0.3);
}

.btn--highlight:hover,
.btn--highlight:active {
  background: var(--accent-orbit);
  color: var(--bg-deep);
  box-shadow: 0 0 26px rgba(108, 217, 240, 0.4);
  transform: translateY(-1px);
}

.btn--block {
  width: 100%;
}

/* ====================================================================
   HERO — MISSION BRIEFING SCREEN
   ==================================================================== */
.mission-hero {
  position: relative;
  padding: 52px 0 60px;
  border-bottom: 1px solid var(--border-line);
  overflow: hidden;
}

.mission-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.mission-hero__briefing {
  background: rgba(21, 31, 51, 0.72);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-orbit);
  padding: 28px 24px;
  border-radius: 6px;
}

.mission-hero__status-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-orbit);
}

.mission-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-orbit);
  box-shadow: 0 0 8px var(--accent-orbit);
}

.mission-hero__tag-gold {
  color: var(--highlight-mission);
  margin-left: auto;
}

.mission-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.mission-hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 26px;
  max-width: 62ch;
}

.mission-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.mission-hero__clients {
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
}

.mission-hero__clients-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: block;
}

.mission-hero__clients-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.mission-hero__client-pill {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 3px;
}

.mission-hero__visual {
  background: var(--surface-cabin);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 20px;
  position: relative;
}

.mission-hero__visual-caption {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

@keyframes orbitRotateSlow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.orbit-ring-animated {
  transform-origin: 240px 170px;
  animation: orbitRotateSlow 54s linear infinite;
}

/* ====================================================================
   SECTIONS COMMON
   ==================================================================== */
.mission-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.mission-section--surface {
  background: rgba(21, 31, 51, 0.45);
}

.mission-section__head {
  max-width: 720px;
  margin-bottom: 40px;
}

.mission-section__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-orbit);
  background: rgba(108, 217, 240, 0.08);
  border: 1px solid var(--border-line);
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 10px;
}

.mission-section__title {
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

.mission-section__desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ====================================================================
   FEATURES — MISSION OBJECTIVES (4 CARDS)
   ==================================================================== */
.objective-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.objective-card {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-top: 2px solid var(--accent-orbit);
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.objective-card:hover {
  border-color: var(--accent-orbit);
  background: var(--surface-elevated);
}

.objective-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.objective-card__code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--highlight-mission);
}

.objective-card__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 217, 240, 0.1);
  border: 1px solid var(--border-line);
  border-radius: 4px;
  color: var(--accent-orbit);
}

.objective-card__title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-primary);
}

.objective-card__text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.objective-card__detail {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-orbit);
}

/* ====================================================================
   LAUNCH SEQUENCE — PROCESS & BENEFITS (3 STEPS)
   ==================================================================== */
.sequence-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.sequence-step {
  background: var(--surface-cabin);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sequence-step__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.sequence-step__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--bg-deep);
  background: var(--accent-orbit);
  padding: 2px 10px;
  border-radius: 3px;
}

.sequence-step__state {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--highlight-mission);
}

.sequence-step__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.sequence-step__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.sequence-step__meta {
  margin-top: auto;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
}

.sequence-cta-bar {
  background: rgba(21, 31, 51, 0.9);
  border: 1px solid var(--border-highlight);
  border-radius: 6px;
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.sequence-cta-bar__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sequence-cta-bar__title {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.05rem;
}

.sequence-cta-bar__sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ====================================================================
   SCENARIOS — 3 AUDIENCE CARDS
   ==================================================================== */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.scenario-card {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--highlight-mission);
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scenario-card__tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--highlight-mission);
  background: rgba(231, 185, 109, 0.1);
  border: 1px solid var(--border-highlight);
  padding: 2px 9px;
  border-radius: 3px;
}

.scenario-card__title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-primary);
}

.scenario-card__device {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-orbit);
  padding: 6px 10px;
  background: var(--bg-deep);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

.scenario-card__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ====================================================================
   STREAMING & AI MATRICES
   ==================================================================== */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.matrix-item {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.matrix-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.matrix-item__name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.matrix-item__badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-orbit);
  border: 1px solid var(--border-line);
  padding: 2px 7px;
  border-radius: 3px;
}

.matrix-item__note {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.matrix-footnote {
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ====================================================================
   PRICING — MISSION PACKAGES (3 TIERS)
   ==================================================================== */
.package-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}

.package-card {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.package-card--featured {
  background: var(--surface-elevated);
  border: 2px solid var(--highlight-mission);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.4);
}

.package-card__ribbon {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--highlight-mission);
  color: var(--bg-deep);
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}

.package-card__code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-orbit);
  margin-bottom: 6px;
}

.package-card__name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.package-card__audience {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.package-card__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 20px;
}

.package-card__amount {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.package-card--featured .package-card__amount {
  color: var(--highlight-mission);
}

.package-card__period {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.package-card__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin-bottom: 26px;
  flex: 1;
}

.package-card__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--text-primary);
}

.package-card__check {
  color: var(--accent-orbit);
  font-family: var(--font-mono);
  font-weight: 700;
  flex-shrink: 0;
}

/* ====================================================================
   FAQ — CONSOLE ACCORDION
   ==================================================================== */
.faq-console {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--accent-orbit);
}

.faq-item__summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text-primary);
}

.faq-item__summary::-webkit-details-marker {
  display: none;
}

.faq-item__indicator {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-orbit);
  border: 1px solid var(--border-line);
  padding: 2px 8px;
  border-radius: 3px;
  flex-shrink: 0;
}

.faq-item__answer {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

/* ====================================================================
   FINAL CTA
   ==================================================================== */
.launch-cta {
  padding: 64px 0;
}

.launch-cta__box {
  background: linear-gradient(135deg, var(--surface-cabin) 0%, var(--surface-elevated) 100%);
  border: 1px solid var(--accent-orbit);
  border-radius: 8px;
  padding: 40px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.launch-cta__tag {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--highlight-mission);
}

.launch-cta__title {
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--text-primary);
}

.launch-cta__text {
  color: var(--text-secondary);
  max-width: 56ch;
  margin-bottom: 6px;
}

/* ====================================================================
   FOOTER & MOBILE STICKY BAR
   ==================================================================== */
.mission-footer {
  background: #060A14;
  border-top: 1px solid var(--border-line);
  padding: 40px 0 96px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.mission-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mission-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.mission-footer__brand {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.05rem;
}

.mission-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  list-style: none;
}

.mission-footer__link {
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.mission-footer__link:hover {
  color: var(--accent-orbit);
}

.mission-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.85rem;
}

.sticky-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 180;
  background: rgba(9, 15, 29, 0.95);
  border-top: 1px solid var(--accent-orbit);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transform: translateY(100%);
  transition: transform 0.25s ease;
}

.sticky-bar--visible {
  transform: translateY(0);
}

.sticky-bar__text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.sticky-bar__btn {
  min-height: 44px;
  padding: 8px 18px;
  background: var(--accent-orbit);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 4px;
  flex-shrink: 0;
}

/* ====================================================================
   GUIDES, ARTICLES & LEGAL PAGES
   ==================================================================== */
.breadcrumb-bar {
  padding: 18px 0;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(21, 31, 51, 0.4);
}

.breadcrumb-bar__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.breadcrumb-bar__link {
  color: var(--accent-orbit);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.guide-card {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease;
}

.guide-card:hover {
  border-color: var(--accent-orbit);
}

.guide-card__thumb {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-card__body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.guide-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--highlight-mission);
}

.guide-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
}

.guide-card__title a {
  color: var(--text-primary);
}

.guide-card__title a:hover {
  color: var(--accent-orbit);
}

.guide-card__excerpt {
  font-size: 0.94rem;
  color: var(--text-secondary);
  flex: 1;
}

.guide-card__link {
  align-self: flex-start;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--accent-orbit);
}

.article-shell {
  padding: 44px 0 64px;
}

.article-shell__container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

.article-shell__header {
  background: var(--surface-cabin);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-orbit);
  border-radius: 6px;
  padding: 28px 24px;
  margin-bottom: 32px;
}

.article-shell__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--highlight-mission);
  margin-bottom: 12px;
}

.article-shell__title {
  font-size: clamp(1.55rem, 3.4vw, 2.2rem);
  line-height: 1.3;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.article-shell__lead {
  font-size: 1.02rem;
  color: var(--text-secondary);
}

.article-shell__content {
  background: rgba(21, 31, 51, 0.55);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 28px 24px;
}

.article-shell__content h2 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-shell__content h2:first-child {
  margin-top: 0;
}

.article-shell__content h3 {
  font-size: 1.12rem;
  color: var(--accent-orbit);
  margin: 22px 0 10px;
}

.article-shell__content p {
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-shell__content ul,
.article-shell__content ol {
  margin: 0 0 18px 22px;
  color: var(--text-primary);
}

.article-shell__content li {
  margin-bottom: 8px;
}

.article-shell__cta {
  margin-top: 32px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-highlight);
  border-radius: 6px;
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.article-shell__related {
  margin-top: 32px;
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 24px;
}

.article-shell__related-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.article-shell__related-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-shell__related-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--accent-orbit);
  font-weight: 600;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.sitemap-group {
  background: var(--surface-cabin);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 24px;
}

.sitemap-group__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--highlight-mission);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.sitemap-group__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sitemap-group__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text-primary);
}

.sitemap-group__link:hover {
  color: var(--accent-orbit);
}

/* ====================================================================
   RESPONSIVE BREAKPOINTS
   ==================================================================== */
@media (min-width: 768px) {
  .orbit-header__toggle {
    display: none;
  }

  .orbit-header__nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    background: transparent;
    border-bottom: none;
    padding: 0;
    box-shadow: none;
    gap: 6px;
  }

  .mission-hero {
    padding: 72px 0 80px;
  }

  .mission-hero__briefing {
    padding: 36px 32px;
  }

  .objective-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sequence-track {
    grid-template-columns: repeat(3, 1fr);
  }

  .scenario-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .matrix-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .package-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sitemap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mission-footer {
    padding-bottom: 44px;
  }

  .sticky-bar {
    display: none;
  }
}

@media (min-width: 1024px) {
  .mission-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .objective-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .guide-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}