/* ===== page-home 专属样式 ===== */
.page-home {
  --home-gold: #D4AF37;
  --home-gold-dim: rgba(212, 175, 55, 0.12);
  --home-card-bg: #142A44;
  --home-card-border: #2C4058;
  --home-text: #E8ECF1;
  --home-text-secondary: #A0B0C0;
  --home-bg-deep: #0B1A2C;
  --home-hover: #3B5E7A;
  --home-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --home-radius: 4px;
  --home-transition: 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
  --home-max-width: 1200px;
  --home-section-gap: 6rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--home-bg-deep);
  color: var(--home-text);
  font-family: 'Inter', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;
  overflow-x: hidden;
}

/* ---------- 首屏英雄区 ---------- */
.page-home__hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

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

.page-home__hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(11, 26, 44, 0.35) 0%, rgba(11, 26, 44, 0.88) 100%);
  z-index: 1;
}

.page-home__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem 1.5rem;
  max-width: 900px;
  width: 100%;
}

.page-home__hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--home-gold);
  font-weight: 400;
  margin-bottom: 1.5rem;
  opacity: 0.8;
  font-family: var(--font-mono, 'SFMono-Regular', monospace);
}

.page-home__hero-title {
  margin: 0 0 0.5rem;
  line-height: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15em;
}

.page-home__hero-title-line {
  display: block;
  font-size: clamp(3rem, 15vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--home-gold) 30%, #F5E6B0 60%, var(--home-gold) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 60px rgba(212, 175, 55, 0.15);
}

.page-home__hero-title-line--sub {
  font-size: clamp(2.2rem, 10vw, 4.5rem);
  letter-spacing: 0.12em;
  opacity: 0.92;
}

.page-home__hero-tagline {
  font-size: clamp(0.95rem, 2.2vw, 1.2rem);
  font-weight: 300;
  color: var(--home-text-secondary);
  letter-spacing: 0.08em;
  margin: 1.2rem auto 1.8rem;
  max-width: 600px;
  line-height: 1.5;
}

.page-home__hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--home-text-secondary);
  font-weight: 300;
  letter-spacing: 0.04em;
}

.page-home__hero-meta-item {
  position: relative;
  padding: 0.2rem 0;
}

.page-home__hero-meta-item::before {
  content: '◆';
  color: var(--home-gold);
  font-size: 0.5rem;
  margin-right: 0.4rem;
  opacity: 0.6;
  vertical-align: middle;
}

.page-home__hero-meta-divider {
  color: var(--home-card-border);
  font-size: 0.7rem;
}

.page-home__hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.5;
}

.page-home__hero-scroll-text {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--home-text-secondary);
  font-weight: 300;
}

.page-home__hero-scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, var(--home-gold), transparent);
}

/* ---------- 页面索引 ---------- */
.page-home__index {
  display: flex;
  justify-content: center;
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--home-card-border);
  background: rgba(11, 26, 44, 0.6);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.page-home__index-inner {
  display: flex;
  align-items: center;
  gap: 0.6rem 1.2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.page-home__index-link {
  color: var(--home-text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  font-weight: 400;
  padding: 0.2rem 0.1rem;
  border-bottom: 1px solid transparent;
  transition: color var(--home-transition), border-color var(--home-transition);
}

.page-home__index-link:hover,
.page-home__index-link:focus-visible {
  color: var(--home-gold);
  border-bottom-color: var(--home-gold);
  outline: none;
}

.page-home__index-dot {
  color: var(--home-card-border);
  font-size: 0.6rem;
}

/* ---------- 通用区块头部 ---------- */
.page-home__section-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  position: relative;
}

.page-home__section-title {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--home-text);
  margin: 0 0 0.25rem;
}

.page-home__section-subtitle {
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  color: var(--home-gold);
  font-weight: 300;
  text-transform: uppercase;
  font-family: var(--font-mono, 'SFMono-Regular', monospace);
  opacity: 0.7;
}

.page-home__section-line {
  width: 60px;
  height: 2px;
  background: var(--home-gold);
  margin-top: 0.8rem;
  border-radius: 1px;
}

/* ---------- 时间线区块 ---------- */
.page-home__updates {
  padding: var(--home-section-gap) 1.5rem;
  max-width: var(--home-max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.page-home__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-left: 1.5rem;
}

.page-home__timeline-track {
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  z-index: 0;
}

.page-home__timeline-line {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, var(--home-gold), var(--home-card-border) 60%, transparent);
  border-radius: 1px;
}

.page-home__timeline-item {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 1.2rem;
  padding-left: 1rem;
}

.page-home__timeline-item--highlight {
  background: var(--home-gold-dim);
  border-radius: var(--home-radius);
  padding: 1rem 1rem 1rem calc(1rem + 1rem);
  margin-left: -1rem;
  border-left: 2px solid var(--home-gold);
}

.page-home__timeline-marker {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  width: 40px;
}

.page-home__timeline-icon {
  width: 40px;
  height: 40px;
  display: block;
  border-radius: 50%;
  background: var(--home-card-bg);
  padding: 6px;
  box-sizing: border-box;
  border: 1px solid var(--home-card-border);
  object-fit: contain;
}

.page-home__timeline-badge {
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--home-gold);
  font-weight: 600;
  background: rgba(212, 175, 55, 0.12);
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
}

.page-home__timeline-badge--muted {
  color: var(--home-text-secondary);
  background: var(--home-card-border);
}

.page-home__timeline-content {
  flex: 1;
  min-width: 0;
}

.page-home__timeline-heading {
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-weight: 600;
  color: var(--home-text);
  margin: 0 0 0.4rem;
  line-height: 1.3;
}

.page-home__timeline-desc {
  font-size: 0.85rem;
  color: var(--home-text-secondary);
  line-height: 1.5;
  margin: 0 0 0.6rem;
  max-width: 540px;
}

.page-home__timeline-link {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--home-gold);
  text-decoration: none;
  font-weight: 400;
  border-bottom: 1px solid transparent;
  transition: border-color var(--home-transition);
}

.page-home__timeline-link:hover,
.page-home__timeline-link:focus-visible {
  border-bottom-color: var(--home-gold);
  outline: none;
}

.page-home__updates-more {
  margin-top: 2.5rem;
  text-align: center;
}

/* ---------- 按钮 ---------- */
.page-home__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.6rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  font-weight: 400;
  text-decoration: none;
  border-radius: 0;
  transition: background var(--home-transition), color var(--home-transition), border-color var(--home-transition);
  cursor: pointer;
  font-family: inherit;
}

.page-home__btn--outline {
  background: transparent;
  border: 1px solid var(--home-card-border);
  color: var(--home-text-secondary);
}

.page-home__btn--outline:hover,
.page-home__btn--outline:focus-visible {
  background: var(--home-gold-dim);
  border-color: var(--home-gold);
  color: var(--home-gold);
  outline: none;
}

/* ---------- 快速帮助卡片网格 ---------- */
.page-home__quick-help {
  padding: var(--home-section-gap) 1.5rem;
  max-width: var(--home-max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

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

.page-home__card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--home-card-bg);
  border: 1px solid var(--home-card-border);
  padding: 1.8rem 1.5rem 1.5rem;
  text-decoration: none;
  color: var(--home-text);
  transition: transform var(--home-transition), box-shadow var(--home-transition), border-color var(--home-transition);
  cursor: pointer;
  border-radius: 0;
  overflow: hidden;
}

.page-home__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--home-gold);
  transition: height var(--home-transition);
}

.page-home__card:hover,
.page-home__card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--home-shadow);
  border-color: var(--home-gold);
  outline: none;
}

.page-home__card:hover::before,
.page-home__card:focus-visible::before {
  height: 100%;
}

.page-home__card-icon-wrap {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(212, 175, 55, 0.08);
  border-radius: 2px;
}

.page-home__card-icon {
  width: 48px;
  height: 48px;
  display: block;
  object-fit: contain;
  filter: brightness(1) contrast(1.1);
}

.page-home__card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  line-height: 1.2;
  color: var(--home-text);
}

.page-home__card-desc {
  font-size: 0.82rem;
  color: var(--home-text-secondary);
  line-height: 1.5;
  margin: 0 0 0.8rem;
  flex: 1;
}

.page-home__card-action {
  font-size: 0.78rem;
  color: var(--home-gold);
  font-weight: 400;
  letter-spacing: 0.03em;
  transition: opacity var(--home-transition);
}

.page-home__card-hint {
  display: block;
  font-size: 0.6rem;
  color: var(--home-text-secondary);
  letter-spacing: 0.05em;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--home-card-border);
  opacity: 0.6;
}

.page-home__quick-help-note {
  font-size: 0.78rem;
  color: var(--home-text-secondary);
  text-align: center;
  margin-top: 2rem;
  line-height: 1.5;
}

.page-home__inline-link {
  color: var(--home-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(212, 175, 55, 0.3);
  transition: text-decoration-color var(--home-transition);
}

.page-home__inline-link:hover,
.page-home__inline-link:focus-visible {
  text-decoration-color: var(--home-gold);
  outline: none;
}

/* ---------- 安装须知 ---------- */
.page-home__install-guide {
  padding: var(--home-section-gap) 1.5rem;
  max-width: var(--home-max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.page-home__install-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-home__install-card {
  position: relative;
  background: var(--home-card-bg);
  border: 1px solid var(--home-card-border);
  padding: 2rem 1.8rem 1.8rem;
  transition: transform var(--home-transition), box-shadow var(--home-transition), border-color var(--home-transition);
  overflow: hidden;
}

.page-home__install-card--emphasis {
  border-color: var(--home-gold);
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.06) 0%, var(--home-card-bg) 100%);
}

.page-home__install-card--emphasis:hover,
.page-home__install-card--emphasis:focus-visible {
  border-color: var(--home-gold);
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.08);
  transform: translateY(-2px);
}

.page-home__install-card-corner {
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, transparent 50%, var(--home-card-border) 50%);
  opacity: 0.4;
}

.page-home__install-card-step {
  display: inline-block;
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--home-gold);
  opacity: 0.18;
  line-height: 1;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono, 'SFMono-Regular', monospace);
  pointer-events: none;
}

.page-home__install-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--home-text);
  margin: 0 0 0.6rem;
  line-height: 1.2;
}

.page-home__install-card-desc {
  font-size: 0.82rem;
  color: var(--home-text-secondary);
  line-height: 1.5;
  margin: 0 0 0.8rem;
  max-width: 480px;
}

.page-home__install-card-tag {
  display: inline-block;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--home-gold);
  background: rgba(212, 175, 55, 0.1);
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(212, 175, 55, 0.2);
  font-weight: 500;
}

.page-home__install-card-link {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--home-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--home-transition);
  margin-top: 0.2rem;
}

.page-home__install-card-link:hover,
.page-home__install-card-link:focus-visible {
  border-bottom-color: var(--home-gold);
  outline: none;
}

.page-home__install-note {
  font-size: 0.78rem;
  color: var(--home-text-secondary);
  text-align: center;
  margin-top: 2rem;
  line-height: 1.5;
}

/* ---------- 信任陈述 ---------- */
.page-home__trust {
  padding: 3rem 1.5rem;
  background: rgba(20, 42, 68, 0.3);
  border-top: 1px solid var(--home-card-border);
  border-bottom: 1px solid var(--home-card-border);
}

.page-home__trust-inner {
  max-width: var(--home-max-width);
  margin: 0 auto;
  text-align: center;
}

.page-home__trust-text {
  font-size: 0.9rem;
  color: var(--home-text);
  line-height: 1.6;
  max-width: 720px;
  margin: 0 auto 1.2rem;
  font-weight: 300;
}

.page-home__trust-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem 1.2rem;
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--home-text-secondary);
  font-weight: 300;
}

.page-home__trust-meta-divider {
  color: var(--home-card-border);
  font-size: 0.6rem;
}

/* ---------- 底部装饰 ---------- */
.page-home__footer-art {
  width: 100%;
  height: 200px;
  overflow: hidden;
  line-height: 0;
  margin-top: -1px;
}

.page-home__footer-art-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center bottom;
  display: block;
  filter: brightness(0.7) contrast(1.2);
}

/* ---------- 响应式：桌面端 ---------- */
@media (min-width: 768px) {
  .page-home__card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-home__install-layout {
    grid-template-columns: 1fr 1fr;
  }

  .page-home__install-card:first-child {
    grid-column: 1 / 2;
  }

  .page-home__install-card:nth-child(2) {
    grid-column: 2 / 3;
  }

  .page-home__install-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: calc(50% - 0.75rem);
    justify-self: center;
  }

  .page-home__updates {
    padding: var(--home-section-gap) 2rem;
  }

  .page-home__quick-help {
    padding: var(--home-section-gap) 2rem;
  }

  .page-home__install-guide {
    padding: var(--home-section-gap) 2rem;
  }

  .page-home__hero-title-line {
    font-size: clamp(4rem, 10vw, 7rem);
  }

  .page-home__hero-title-line--sub {
    font-size: clamp(3rem, 7vw, 4.5rem);
  }

  .page-home__hero-content {
    padding: 3rem;
  }
}

@media (min-width: 1024px) {
  .page-home__card-grid {
    gap: 1.8rem;
  }

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

  .page-home__install-card:nth-child(3) {
    grid-column: 3 / 4;
    max-width: none;
    justify-self: auto;
  }

  .page-home__timeline {
    padding-left: 2rem;
  }

  .page-home__timeline-track {
    left: 1rem;
  }

  .page-home__timeline-item {
    padding-left: 1.5rem;
  }

  .page-home__timeline-item--highlight {
    padding: 1.5rem 1.5rem 1.5rem calc(1.5rem + 1.5rem);
    margin-left: -1.5rem;
  }

  .page-home__section-header {
    margin-bottom: 3rem;
  }

  .page-home__section-title {
    font-size: 2.6rem;
  }
}

/* ---------- 大屏微调 ---------- */
@media (min-width: 1400px) {
  .page-home__hero-content {
    max-width: 1000px;
  }

  .page-home__hero-title-line {
    font-size: 8rem;
  }

  .page-home__hero-title-line--sub {
    font-size: 5rem;
  }
}

/* ---------- 移动端紧凑调整 ---------- */
@media (max-width: 480px) {
  .page-home__hero {
    min-height: 92vh;
  }

  .page-home__hero-meta {
    flex-direction: column;
    gap: 0.3rem;
  }

  .page-home__hero-meta-divider {
    display: none;
  }

  .page-home__index {
    padding: 0.8rem 1rem;
  }

  .page-home__index-inner {
    gap: 0.4rem 0.8rem;
  }

  .page-home__timeline-item {
    flex-direction: column;
    gap: 0.6rem;
  }

  .page-home__timeline-marker {
    flex-direction: row;
    width: auto;
    gap: 0.6rem;
  }

  .page-home__timeline-item--highlight {
    padding: 0.8rem;
    margin-left: 0;
  }

  .page-home__card {
    padding: 1.4rem 1.2rem 1.2rem;
  }

  .page-home__install-card {
    padding: 1.5rem 1.2rem 1.2rem;
  }

  .page-home__trust-meta {
    flex-direction: column;
    gap: 0.3rem;
  }

  .page-home__trust-meta-divider {
    display: none;
  }
}

/* ---------- 交互增强：hover 展开提示 ---------- */
.page-home__card[data-interact="hover-expand"] .page-home__card-hint {
  max-height: 0;
  overflow: hidden;
  padding-top: 0;
  border-top-width: 0;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.25s ease, padding-top 0.25s ease;
}

.page-home__card[data-interact="hover-expand"]:hover .page-home__card-hint,
.page-home__card[data-interact="hover-expand"]:focus-visible .page-home__card-hint {
  max-height: 60px;
  opacity: 0.7;
  padding-top: 0.5rem;
  border-top-width: 1px;
}

.page-home__install-card[data-interact="hover-expand"] .page-home__install-card-tag {
  transition: background var(--home-transition), color var(--home-transition);
}

.page-home__install-card[data-interact="hover-expand"]:hover .page-home__install-card-tag,
.page-home__install-card[data-interact="hover-expand"]:focus-visible .page-home__install-card-tag {
  background: rgba(212, 175, 55, 0.2);
  color: var(--home-gold);
}

/* ---------- 无障碍焦点样式 ---------- */
.page-home a:focus-visible,
.page-home button:focus-visible {
  outline: 2px solid var(--home-gold);
  outline-offset: 2px;
}

/* ---------- 打印样式 ---------- */
@media print {
  .page-home__hero {
    min-height: auto;
    padding: 2rem 0;
  }

  .page-home__hero-bg,
  .page-home__hero-overlay,
  .page-home__hero-scroll,
  .page-home__footer-art {
    display: none;
  }

  .page-home__hero-title-line {
    -webkit-text-fill-color: var(--home-gold);
    color: var(--home-gold);
  }

  .page-home__index {
    position: static;
    backdrop-filter: none;
  }

  .page-home__card:hover {
    transform: none;
    box-shadow: none;
  }
}