/* ===== 首页专属样式 · page-home ===== */
.page-home {
  --home-spacing-section: 5rem;
  --home-spacing-section-mobile: 2.5rem;
  --home-card-radius: 12px;
  --home-map-pin-size: 20px;
  --home-map-pin-glow: 0 0 0 4px rgba(242,140,40,0.25), 0 0 20px rgba(242,140,40,0.15);

  display: flex;
  flex-direction: column;
  gap: var(--home-spacing-section-mobile);
  padding: 0 1rem var(--spacing-xl);
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--clr-primary-bg);
  color: var(--clr-primary-text);
}

@media (min-width: 768px) {
  .page-home {
    gap: var(--home-spacing-section);
    padding: 0 2rem var(--spacing-xl);
  }
}

/* --- 页面上下文 --- */
.page-home__context {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: var(--spacing-sm) 0 0;
  border-bottom: 1px solid var(--clr-card-border);
  padding-bottom: 0.75rem;
  margin-bottom: 0.5rem;
}

.page-home__context .tag {
  background: var(--clr-tag-bg);
  color: var(--clr-tag-text);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}

.page-home__context-sep {
  color: var(--clr-card-border);
  font-size: 0.85rem;
}

.page-home__context-label {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  font-weight: 300;
}

/* --- 首屏章节预览 --- */
.page-home__preview {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-home__preview-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-home__preview-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--clr-primary-text);
  margin: 0;
}

@media (min-width: 768px) {
  .page-home__preview-title {
    font-size: 3.5rem;
  }
}

.page-home__preview-sub {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255,255,255,0.65);
  margin: 0;
  line-height: 1.6;
  max-width: 32em;
}

.page-home__section-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-accent);
  margin: 0.5rem 0 0;
  padding: 0;
  border-left: 3px solid var(--clr-accent);
  padding-left: 0.75rem;
}

/* 预览卡片轨道 */
.page-home__preview-track {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem 0 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-accent) var(--clr-card-border);
}

.page-home__preview-track::-webkit-scrollbar {
  height: 6px;
}

.page-home__preview-track::-webkit-scrollbar-track {
  background: var(--clr-card-border);
  border-radius: 3px;
}

.page-home__preview-track::-webkit-scrollbar-thumb {
  background: var(--clr-accent);
  border-radius: 3px;
}

/* 预览卡片 */
.page-home__preview-card {
  flex: 0 0 220px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-card-border);
  border-radius: var(--home-card-radius);
  text-decoration: none;
  color: var(--clr-primary-text);
  transition: background 0.25s, border-color 0.25s, transform 0.2s;
  position: relative;
}

.page-home__preview-card:hover,
.page-home__preview-card:focus-visible {
  background: rgba(255,255,255,0.08);
  border-color: var(--clr-accent);
  transform: translateY(-3px);
  outline: none;
}

.page-home__preview-card:focus-visible {
  box-shadow: 0 0 0 3px var(--clr-accent);
}

.page-home__preview-card-num {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
}

.page-home__preview-card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-primary-text);
}

.page-home__preview-card-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
  flex: 1;
}

.page-home__preview-card-arrow {
  align-self: flex-end;
  font-size: 1.2rem;
  color: var(--clr-accent);
  transition: transform 0.2s;
}

.page-home__preview-card:hover .page-home__preview-card-arrow {
  transform: translateX(4px);
}

@media (min-width: 768px) {
  .page-home__preview-card {
    flex: 0 0 260px;
    padding: 1.5rem 1.25rem;
  }
}

@media (min-width: 1024px) {
  .page-home__preview-track {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    overflow-x: visible;
    scroll-snap-type: none;
    padding-bottom: 0;
  }

  .page-home__preview-card {
    flex: 1 1 auto;
    scroll-snap-align: none;
  }
}

/* --- 动态城市地图 --- */
.page-home__map {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--clr-card-border);
}

@media (min-width: 768px) {
  .page-home__map {
    min-height: 520px;
  }
}

.page-home__map-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home__map-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
  max-width: 100%;
}

.page-home__map-overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-city);
  opacity: 0.55;
  mix-blend-mode: overlay;
}

.page-home__map-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2.5rem 1.5rem;
  text-align: center;
  width: 100%;
  min-height: inherit;
  background: rgba(10,10,10,0.25);
  backdrop-filter: blur(2px);
}

@media (min-width: 768px) {
  .page-home__map-content {
    gap: 1.25rem;
    padding: 3rem 2rem;
    background: rgba(10,10,10,0.15);
  }
}

.page-home__map-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--clr-primary-text);
  margin: 0;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

@media (min-width: 768px) {
  .page-home__map-title {
    font-size: 2.5rem;
  }
}

.page-home__map-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255,255,255,0.85);
  margin: 0;
  text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

/* 城市图钉 */
.page-home__map-pins {
  position: relative;
  width: 100%;
  height: 180px;
  margin: 0.75rem 0;
}

@media (min-width: 768px) {
  .page-home__map-pins {
    height: 260px;
  }
}

.page-home__map-pin {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  text-decoration: none;
  color: var(--clr-primary-text);
  transform: translate(-50%, -50%);
  transition: transform 0.2s;
}

.page-home__map-pin:hover,
.page-home__map-pin:focus-visible {
  transform: translate(-50%, -50%) scale(1.15);
  outline: none;
}

.page-home__map-pin:focus-visible {
  filter: brightness(1.3);
}

.page-home__map-pin-dot {
  width: var(--home-map-pin-size);
  height: var(--home-map-pin-size);
  border-radius: var(--radius-full);
  background: var(--clr-accent);
  box-shadow: var(--home-map-pin-glow);
  transition: box-shadow 0.25s, background 0.25s;
  display: block;
}

.page-home__map-pin:hover .page-home__map-pin-dot,
.page-home__map-pin:focus-visible .page-home__map-pin-dot {
  background: var(--clr-accent-hover);
  box-shadow: 0 0 0 6px rgba(242,140,40,0.35), 0 0 30px rgba(242,140,40,0.2);
}

.page-home__map-pin-label {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--clr-primary-text);
  background: rgba(0,0,0,0.55);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.page-home__map-pin:hover .page-home__map-pin-label,
.page-home__map-pin:focus-visible .page-home__map-pin-label {
  opacity: 1;
}

.page-home__map-badge {
  margin-top: 0.25rem;
}

.page-home__map-badge .tag {
  background: rgba(0,0,0,0.5);
  color: var(--clr-primary-text);
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
}

/* --- 进入模块 --- */
.page-home__access {
  border-top: 1px solid var(--clr-card-border);
  padding-top: var(--spacing-lg);
}

@media (min-width: 768px) {
  .page-home__access {
    padding-top: var(--spacing-xl);
  }
}

.page-home__access-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}

@media (min-width: 768px) {
  .page-home__access-inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
}

.page-home__access-text {
  flex: 1 1 50%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-home__access-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--clr-primary-text);
  margin: 0;
}

.page-home__access-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  margin: 0;
}

.page-home__access-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

.page-home__access-actions .btn--primary {
  background: var(--clr-accent);
  color: var(--clr-secondary-text);
  border: none;
  padding: 0.75rem 2rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  box-shadow: 0 4px 16px rgba(242,140,40,0.25);
}

.page-home__access-actions .btn--primary:hover,
.page-home__access-actions .btn--primary:focus-visible {
  background: var(--clr-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(242,140,40,0.35);
  outline: none;
}

.page-home__access-actions .btn--primary:focus-visible {
  outline: 2px solid var(--clr-primary-text);
  outline-offset: 3px;
}

.page-home__access-hint {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  font-weight: 300;
  font-style: italic;
}

.page-home__access-visual {
  flex: 0 0 auto;
  position: relative;
  width: 100%;
  max-width: 360px;
  border-radius: var(--home-card-radius);
  overflow: hidden;
  border: 1px solid var(--clr-card-border);
}

@media (min-width: 768px) {
  .page-home__access-visual {
    max-width: 400px;
  }
}

.page-home__access-img {
  width: 100%;
  height: auto;
  display: block;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 600 / 400;
}

.page-home__access-visual-tag {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  background: rgba(0,0,0,0.6);
  color: var(--clr-primary-text);
  border: 1px solid rgba(255,255,255,0.15);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
}

/* --- 资料库与产品线入口 --- */
.page-home__library {
  border-top: 1px solid var(--clr-card-border);
  padding-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .page-home__library {
    padding-top: var(--spacing-xl);
  }
}

.page-home__library-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--clr-primary-text);
  margin: 0;
}

.page-home__library-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255,255,255,0.6);
  margin: 0;
  line-height: 1.6;
  max-width: 36em;
}

/* 卡片网格 */
.page-home__library-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .page-home__library-grid {
    gap: 1rem;
  }
}

@media (min-width: 1024px) {
  .page-home__library-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.page-home__library-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 1rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--clr-card-border);
  border-radius: var(--home-card-radius);
  text-decoration: none;
  color: var(--clr-primary-text);
  transition: background 0.25s, border-color 0.25s, transform 0.2s;
  position: relative;
}

.page-home__library-card:hover,
.page-home__library-card:focus-visible {
  background: rgba(255,255,255,0.07);
  border-color: var(--clr-accent);
  transform: translateY(-2px);
  outline: none;
}

.page-home__library-card:focus-visible {
  box-shadow: 0 0 0 3px var(--clr-accent);
}

.page-home__library-card-icon {
  color: var(--clr-accent);
  width: 32px;
  height: 32px;
  margin-bottom: 0.25rem;
}

.page-home__library-card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-primary-text);
}

.page-home__library-card-desc {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 300;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
  flex: 1;
}

.page-home__library-card-arrow {
  align-self: flex-end;
  font-size: 1.1rem;
  color: var(--clr-accent);
  transition: transform 0.2s;
  margin-top: 0.25rem;
}

.page-home__library-card:hover .page-home__library-card-arrow,
.page-home__library-card:focus-visible .page-home__library-card-arrow {
  transform: translateX(4px);
}

/* 装饰图片区 */
.page-home__library-decor {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
  align-items: flex-end;
}

.page-home__library-decor-img {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-card-border);
  aspect-ratio: 400 / 300;
}

.page-home__library-decor-shape {
  width: 80px;
  height: 80px;
  object-fit: contain;
  display: block;
  opacity: 0.6;
  border-radius: var(--radius-sm);
}

@media (min-width: 768px) {
  .page-home__library-decor {
    gap: 1rem;
  }

  .page-home__library-decor-img {
    max-width: 320px;
  }

  .page-home__library-decor-shape {
    width: 100px;
    height: 100px;
  }
}

/* --- 响应式微调 --- */
@media (max-width: 480px) {
  .page-home__preview-title {
    font-size: 1.8rem;
  }

  .page-home__map {
    min-height: 320px;
  }

  .page-home__map-pins {
    height: 140px;
  }

  .page-home__map-pin-dot {
    width: 16px;
    height: 16px;
  }

  .page-home__library-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }

  .page-home__library-card {
    padding: 0.9rem 0.75rem;
  }

  .page-home__access-visual {
    max-width: 100%;
  }
}

@media (min-width: 1200px) {
  .page-home {
    padding-left: 0;
    padding-right: 0;
  }

  .page-home__preview-card {
    padding: 1.75rem 1.5rem;
  }
}