/* ==========================================================================
   wycloud (wycloud.site) — Layer 1.5: Swiss Railway Conversion UI
   Naming Convention: BEM (.block__element--modifier)
   Color System:
     Background: #F7F7F4 | Primary: #171717 | Accent: #D92332
     Secondary:  #52616B | Surface: #E9E9E5 | Pure Card: #FFFFFF
   ========================================================================== */

:root {
  --color-bg-primary: #F7F7F4;
  --color-bg-surface: #E9E9E5;
  --color-bg-card: #FFFFFF;
  --color-text-primary: #171717;
  --color-text-secondary: #52616B;
  --color-accent: #D92332;
  --color-accent-subtle: #FDECEE;
  --color-border-strong: #171717;
  --color-border-grid: #C5C9CC;
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --container-max: 1180px;
  --header-height: 68px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  padding-bottom: 74px;
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }
}

a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color 0.12s linear, background-color 0.12s linear, border-color 0.12s linear;
}

a:hover {
  color: var(--color-accent);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

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

.layout-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-accent);
  color: #FFFFFF;
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  font-weight: 700;
}

.skip-link:focus {
  top: 0.75rem;
}

/* ==========================================================================
   Header — Swiss Station Signage Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-height);
  background-color: rgba(247, 247, 244, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--color-border-strong);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  min-height: 44px;
}

.site-header__logo:hover {
  color: var(--color-accent);
}

.site-header__logo-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  color: var(--color-text-primary);
  cursor: pointer;
}

.site-header__toggle:hover {
  background: var(--color-text-primary);
  color: var(--color-bg-primary);
}

.site-header__nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-bg-primary);
  border-bottom: 2px solid var(--color-border-strong);
  padding: 1rem 1.25rem;
}

.site-header__nav--open {
  display: block;
}

.site-header__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-header__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.85rem;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 0.95rem;
  border-bottom: 3px solid transparent;
}

.site-header__link:hover,
.site-header__link--active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  background-color: var(--color-bg-surface);
}

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.5rem 1.25rem;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border: 2px solid var(--color-accent);
  font-weight: 800;
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

/* Layer 1.5: Buttons invert foreground and background on hover */
.site-header__cta:hover {
  background-color: #FFFFFF;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

@media (min-width: 768px) {
  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: flex;
    position: static;
    background: transparent;
    border-bottom: none;
    padding: 0;
    align-items: center;
    gap: 1.25rem;
  }

  .site-header__list {
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
  }

  .site-header__cta {
    margin-top: 0;
  }
}

/* ==========================================================================
   Buttons — Strict Foreground/Background Inversion on Hover
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.65rem;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  border: 2px solid var(--color-border-strong);
  transition: background-color 0.12s linear, color 0.12s linear, border-color 0.12s linear;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background-color: #FFFFFF;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn--secondary {
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover {
  background-color: var(--color-text-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-border-strong);
}

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

/* ==========================================================================
   Hero Section — Swiss Railway Departure Board
   ========================================================================== */
.hero-section {
  background-color: var(--color-bg-primary);
  border-bottom: 2px solid var(--color-border-strong);
  padding: 2.25rem 0 3rem;
}

.hero-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  border: 2px solid var(--color-border-strong);
  background-color: var(--color-bg-card);
}

@media (min-width: 960px) {
  .hero-section {
    padding: 3rem 0 3.75rem;
  }

  .hero-section__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero-section__content {
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .hero-section__content {
    padding: 2.5rem;
  }
}

.hero-section__status {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 0.625rem;
  padding: 0.3rem 0.75rem;
  background-color: var(--color-text-primary);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.hero-section__status-dot {
  width: 9px;
  height: 9px;
  background-color: var(--color-accent);
  display: inline-block;
}

.hero-section__title {
  font-size: clamp(1.9rem, 4vw, 2.85rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero-section__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: 1.5rem;
  max-width: 56ch;
}

/* Above-the-fold Fare & Next Step Summary Bar (Conversion requirement) */
.hero-fare-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--color-border-strong);
  background-color: var(--color-bg-surface);
  margin-bottom: 1.5rem;
}

.hero-fare-strip__cell {
  padding: 0.65rem 0.75rem;
  border-right: 1px solid var(--color-border-strong);
}

.hero-fare-strip__cell:last-child {
  border-right: none;
}

.hero-fare-strip__label {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  font-weight: 700;
}

.hero-fare-strip__val {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-text-primary);
}

.hero-fare-strip__val--accent {
  color: var(--color-accent);
}

.hero-section__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-bottom: 1.75rem;
}

.hero-section__facts {
  border-top: 2px solid var(--color-border-strong);
  padding-top: 1.15rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

@media (min-width: 600px) {
  .hero-section__facts {
    grid-template-columns: repeat(2, 1fr);
  }
}

.hero-section__fact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-section__fact-icon {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* Right Column: SBB Departure Board Console */
.topology-console {
  background-color: #171717;
  color: #F7F7F4;
  border-top: 2px solid var(--color-border-strong);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

@media (min-width: 960px) {
  .topology-console {
    border-top: none;
    border-left: 2px solid var(--color-border-strong);
    padding: 2.25rem 1.75rem;
  }
}

.topology-console__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid #F7F7F4;
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
  font-weight: 800;
  color: #F7F7F4;
}

.topology-console__badge {
  background-color: var(--color-accent);
  color: #FFFFFF;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
}

.topology-console__diagram {
  width: 100%;
  height: auto;
  margin-bottom: 1.25rem;
}

.topology-console__matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid #52616B;
  padding-top: 1rem;
  gap: 0.75rem;
}

.topology-console__cell {
  border-left: 3px solid var(--color-accent);
  padding-left: 0.65rem;
}

.topology-console__label {
  display: block;
  font-size: 0.78rem;
  color: #C5C9CC;
  font-weight: 600;
}

.topology-console__val {
  font-size: 0.95rem;
  font-weight: 900;
  color: #FFFFFF;
}

/* ==========================================================================
   Section Headers with Oversized Swiss Numerals
   ========================================================================== */
.page-section {
  padding: 3.5rem 0;
  border-bottom: 2px solid var(--color-border-strong);
}

.page-section--surface {
  background-color: var(--color-bg-surface);
}

.page-section__header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border-strong);
}

.page-section__index {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 900;
  color: var(--color-accent);
}

.page-section__title {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  font-weight: 900;
  color: var(--color-text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-section__desc {
  color: var(--color-text-secondary);
  font-size: 1rem;
  font-weight: 500;
  max-width: 72ch;
}

/* ==========================================================================
   Features Grid (4 Numbered Information Blocks)
   ========================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  border: 2px solid var(--color-border-strong);
  background-color: var(--color-bg-card);
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  padding: 1.65rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  border-bottom: 1px solid var(--color-border-strong);
}

@media (min-width: 640px) {
  .feature-card:nth-child(odd) {
    border-right: 1px solid var(--color-border-strong);
  }
}

@media (min-width: 1024px) {
  .feature-card {
    border-bottom: none;
    border-right: 1px solid var(--color-border-strong);
  }
  .feature-card:last-child {
    border-right: none;
  }
}

.feature-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.feature-card__num {
  font-size: 1.85rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.feature-card__icon-wrap {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
}

.feature-card__title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

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

.feature-card__audience {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-grid);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

/* ==========================================================================
   Media & AI Support Matrices (Swiss Timetable Grid)
   ========================================================================== */
.platform-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 2px solid var(--color-border-strong);
  background-color: var(--color-bg-card);
}

@media (min-width: 768px) {
  .platform-matrix {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .platform-matrix {
    grid-template-columns: repeat(6, 1fr);
  }
}

.platform-item {
  padding: 1.35rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-right: 1px solid var(--color-border-strong);
  border-bottom: 1px solid var(--color-border-strong);
}

.platform-item__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.platform-item__icon {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.platform-item__region {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   Scenario Cards (4 Cards)
   ========================================================================== */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.scenario-card {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  padding: 1.5rem;
}

.scenario-card__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.875rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-strong);
}

.scenario-card__title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.scenario-card__device {
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  background-color: var(--color-text-primary);
  color: #FFFFFF;
}

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

/* ==========================================================================
   Pricing Section — Swiss Fare-Selection System
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (min-width: 900px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
  transition: border-color 0.12s linear, background-color 0.12s linear;
}

.pricing-card--featured,
.pricing-card--selected {
  border: 3px solid var(--color-accent);
  background-color: #FFFFFF;
}

.pricing-card__header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid var(--color-border-strong);
}

.pricing-card__code {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-text-primary);
}

.pricing-card__tag {
  display: inline-block;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 0.2rem 0.65rem;
}

.pricing-card__audience {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
}

.pricing-card__name {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--color-text-primary);
  margin-bottom: 0.65rem;
}

/* Oversized Numerals for Important Metrics */
.pricing-card__price {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-text-primary);
  line-height: 1;
  margin-bottom: 0.45rem;
  letter-spacing: -0.03em;
}

.pricing-card__period {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.pricing-card__note {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border-grid);
}

.pricing-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.pricing-card__item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.94rem;
  color: var(--color-text-primary);
  font-weight: 500;
}

.pricing-card__check {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

/* ==========================================================================
   Benefits & Comparison Timetable (Numbered Process + Precise Table)
   ========================================================================== */
.benefit-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
}

@media (min-width: 768px) {
  .benefit-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.benefit-box {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  border-top: 5px solid var(--color-accent);
  padding: 1.5rem;
}

.benefit-box__step {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.benefit-box__title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
}

.benefit-box__desc {
  font-size: 0.94rem;
  color: var(--color-text-secondary);
}

/* Precise Comparison Table (Desktop Table -> Mobile Labeled Cards) */
.comparison-wrap {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  margin-bottom: 1.75rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 0.95rem 1.15rem;
  border-bottom: 1px solid var(--color-border-strong);
  border-right: 1px solid var(--color-border-strong);
  font-size: 0.94rem;
}

.comparison-table th {
  background-color: var(--color-text-primary);
  color: #FFFFFF;
  font-weight: 800;
}

.comparison-table th:last-child,
.comparison-table td:last-child {
  border-right: none;
}

@media (max-width: 767px) {
  .comparison-table thead {
    display: none;
  }
  .comparison-table,
  .comparison-table tbody,
  .comparison-table tr,
  .comparison-table td {
    display: block;
    width: 100%;
  }
  .comparison-table tr {
    border-bottom: 2px solid var(--color-border-strong);
    padding: 0.5rem 0;
  }
  .comparison-table td {
    border-right: none;
    border-bottom: 1px solid var(--color-border-grid);
    display: flex;
    justify-content: space-between;
    gap: 1rem;
  }
  .comparison-table td::before {
    content: attr(data-label);
    font-weight: 800;
    color: var(--color-text-primary);
    flex-shrink: 0;
  }
}

.comparison-cta-bar {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
}

.faq-item__summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.35rem;
  min-height: 54px;
  font-weight: 800;
  color: var(--color-text-primary);
  cursor: pointer;
}

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

.faq-item__indicator {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform 0.12s linear;
}

.faq-item[open] .faq-item__indicator {
  transform: rotate(180deg);
}

.faq-item__answer {
  padding: 0.95rem 1.35rem 1.25rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  border-top: 1px solid var(--color-border-strong);
  background-color: var(--color-bg-primary);
}

/* ==========================================================================
   Final CTA Section
   ========================================================================== */
.final-cta {
  background-color: #171717;
  color: #F7F7F4;
  padding: 3.75rem 0;
  border-bottom: 2px solid var(--color-border-strong);
}

.final-cta__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .final-cta__inner {
    flex-direction: row;
    align-items: center;
  }
}

.final-cta__title {
  font-size: clamp(1.45rem, 2.8vw, 1.95rem);
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 0.35rem;
}

.final-cta__text {
  color: #E9E9E5;
  font-size: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--color-bg-surface);
  padding: 2.5rem 0;
  margin-top: auto;
  border-top: 2px solid var(--color-border-strong);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.site-footer__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-text-primary);
  font-size: 0.92rem;
  font-weight: 700;
}

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

.site-footer__meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.86rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border-strong);
  padding-top: 1rem;
}

/* ==========================================================================
   Mobile Sticky Bottom CTA
   ========================================================================== */
.mobile-sticky {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 180;
  background-color: var(--color-bg-card);
  border-top: 2px solid var(--color-border-strong);
  padding: 0.625rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  transform: translateY(100%);
  transition: transform 0.18s linear;
}

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

.mobile-sticky__label {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.mobile-sticky__btn {
  min-height: 44px;
  padding: 0.5rem 1.15rem;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border: 2px solid var(--color-accent);
  font-weight: 800;
  font-size: 0.9rem;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .mobile-sticky {
    display: none;
  }
}

/* ==========================================================================
   Guides Listing & Article Content Pages
   ========================================================================== */
.breadcrumb-bar {
  background-color: var(--color-bg-surface);
  border-bottom: 2px solid var(--color-border-strong);
  padding: 0.65rem 0;
  font-size: 0.88rem;
  font-weight: 700;
}

.breadcrumb-bar__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-secondary);
}

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

.guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .guide-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.guide-card {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  display: flex;
  flex-direction: column;
}

.guide-card__thumb {
  background-color: #171717;
  border-bottom: 2px solid var(--color-border-strong);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-card__body {
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.guide-card__meta {
  display: flex;
  gap: 0.875rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: 0.625rem;
}

.guide-card__title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 0.625rem;
  line-height: 1.35;
}

.guide-card__excerpt {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.guide-card__more {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 800;
  color: var(--color-accent);
}

.article-layout {
  max-width: 840px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.article-content {
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  padding: 1.75rem 1.35rem;
}

@media (min-width: 768px) {
  .article-content {
    padding: 2.75rem 3rem;
  }
}

.article-content__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--color-border-strong);
}

.article-content h1 {
  font-size: clamp(1.65rem, 3.2vw, 2.25rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-text-primary);
}

.article-content h2 {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 2rem 0 0.875rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-border-strong);
  color: var(--color-text-primary);
}

.article-content h3 {
  font-size: 1.125rem;
  font-weight: 800;
  margin: 1.35rem 0 0.5rem;
  color: var(--color-text-primary);
}

.article-content p {
  margin-bottom: 1.15rem;
  color: var(--color-text-secondary);
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.25rem 1.35rem;
  color: var(--color-text-secondary);
}

.article-content li {
  margin-bottom: 0.45rem;
}

.article-cta-box {
  margin: 2.25rem 0;
  padding: 1.5rem;
  background-color: var(--color-bg-surface);
  border: 2px solid var(--color-border-strong);
  border-left: 6px solid var(--color-accent);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .article-cta-box {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.article-related {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--color-border-strong);
}

.article-related__list {
  list-style: none;
  margin: 0.75rem 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}