/* ===== 首页专属样式 - 限定在 .page-home 作用域 ===== */
.page-home {
  --hero-title-size: 4.2rem;
  --hero-tagline-size: 1.6rem;
  --card-radius: 2px;
  --orbit-size: 360px;
  --tools-gap: 3rem;
  --transition-lift: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: block;
  width: 100%;
  background-color: var(--color-primary-dark);
}

/* ===== 封面首屏 ===== */
.page-home__hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-primary-dark);
}

.page-home__hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  z-index: 0;
  opacity: 0.35;
  filter: saturate(1.2) contrast(1.1);
}

.page-home__hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg,
    rgba(11, 29, 58, 0.92) 0%,
    rgba(11, 29, 58, 0.70) 50%,
    rgba(11, 29, 58, 0.88) 100%);
}

.page-home__hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding-top: 2rem;
  padding-bottom: 3rem;
  width: 100%;
}

.page-home__hero-left {
  flex: 0 0 auto;
  max-width: 100%;
}

.page-home__hero-context {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-accent-gold);
  padding-left: 0.75rem;
  margin-bottom: 1.25rem;
}

.page-home__hero-title {
  font-family: var(--font-heading);
  font-size: var(--hero-title-size);
  font-weight: 900;
  line-height: 1.05;
  color: var(--color-text-primary);
  text-shadow: 0 0 20px var(--color-accent-gold), 0 0 60px rgba(240, 192, 64, 0.25);
  margin: 0 0 0.5rem;
  letter-spacing: 0.04em;
}

.page-home__hero-tagline {
  font-family: var(--font-heading);
  font-size: var(--hero-tagline-size);
  font-weight: 700;
  color: var(--color-accent-gold);
  margin: 0 0 1rem;
  letter-spacing: 0.06em;
  text-shadow: 0 0 12px rgba(240, 192, 64, 0.3);
}

.page-home__hero-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 36rem;
  margin: 0 0 1.8rem;
}

.page-home__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.page-home__hero-actions .btn {
  font-size: 1.05rem;
  padding: 0.8rem 2rem;
  border-radius: var(--border-radius-sharp);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-home__hero-actions .btn:hover,
.page-home__hero-actions .btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 0 20px var(--color-hover-glow);
}

.page-home__hero-actions .btn:active {
  transform: translateY(0);
  box-shadow: 0 0 8px var(--color-hover-glow);
}

/* 右侧卡片 */
.page-home__hero-right {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  flex: 0 0 auto;
  max-width: 100%;
}

.page-home__hero-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background-color: var(--color-surface-light);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--card-radius);
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  cursor: pointer;
}

.page-home__hero-card:hover,
.page-home__hero-card:focus-visible {
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 24px var(--color-hover-glow);
  transform: translateY(-3px);
}

.page-home__hero-card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.25rem;
}

.page-home__hero-card-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}

.page-home__hero-card-desc {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* 星球轨道装饰 */
.page-home__orbit {
  position: absolute;
  top: 6%;
  right: 2%;
  width: var(--orbit-size);
  height: var(--orbit-size);
  pointer-events: none;
  z-index: 1;
  opacity: 0.2;
}

.page-home__orbit-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--color-accent-gold);
  border-radius: 50%;
  animation: page-home-spin 40s linear infinite;
}

.page-home__orbit-ring::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-green);
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 12px var(--color-accent-green);
}

@keyframes page-home-spin {
  to { transform: rotate(360deg); }
}

.page-home__orbit-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background-color: var(--color-accent-gold);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 20px var(--color-accent-gold);
}

/* ===== 工具亮点 ===== */
.page-home__tools {
  padding-top: 4rem;
  padding-bottom: 4rem;
  background-color: var(--color-primary-dark);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.page-home__section-title {
  margin-bottom: 0.75rem;
}

.page-home__section-title--gold {
  color: var(--color-accent-gold);
  text-shadow: 0 0 10px rgba(240, 192, 64, 0.2);
}

.page-home__tools-intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
  max-width: 32rem;
}

.page-home__tools-list {
  display: flex;
  flex-direction: column;
  gap: var(--tools-gap);
}

.page-home__tool-item {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  background-color: var(--color-surface-light);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--card-radius);
  padding: 1.5rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.page-home__tool-item:hover {
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 20px var(--color-hover-glow);
}

.page-home__tool-image {
  position: relative;
  width: 100%;
  max-width: 480px;
  flex-shrink: 0;
  border-radius: var(--card-radius);
  overflow: hidden;
}

.page-home__tool-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--card-radius);
  transition: transform 0.4s ease;
}

.page-home__tool-item:hover .page-home__tool-img {
  transform: scale(1.02);
}

/* 模拟下拉菜单 */
.page-home__tool-simulate {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  right: 0.75rem;
  background-color: rgba(11, 29, 58, 0.85);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--card-radius);
  padding: 0.75rem 1rem;
  backdrop-filter: blur(4px);
}

.page-home__simu-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.35rem;
  letter-spacing: 0.05em;
}

.page-home__simu-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-home__simu-item {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text-primary);
  background-color: rgba(240, 192, 64, 0.08);
  border: 1px solid var(--color-border-subtle);
  border-radius: 2px;
  padding: 0.2rem 0.6rem;
  transition: background-color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  cursor: default;
}

.page-home__simu-item:hover,
.page-home__simu-item:focus-within {
  background-color: rgba(240, 192, 64, 0.2);
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 10px var(--color-hover-glow);
}

.page-home__tool-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}

.page-home__tool-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 0.25rem;
}

.page-home__tool-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-home__tool-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}

.page-home__tool-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-accent-gold);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.4rem;
  transition: color var(--transition-base), gap var(--transition-base);
}

.page-home__tool-link:hover,
.page-home__tool-link:focus-visible {
  color: var(--color-accent-green);
  gap: 0.6rem;
}

/* ===== 快速注册 ===== */
.page-home__register {
  padding-top: 4rem;
  padding-bottom: 4rem;
  background: linear-gradient(180deg, var(--color-primary-dark) 0%, #0a1a33 100%);
  border-bottom: 1px solid var(--color-border-subtle);
}

.page-home__register-intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
  max-width: 32rem;
}

.page-home__steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.page-home__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--color-surface-light);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--card-radius);
  padding: 1.5rem 1.25rem;
  position: relative;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.page-home__step:hover {
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 16px var(--color-hover-glow);
}

.page-home__step-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-accent-gold);
  line-height: 1;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 12px rgba(240, 192, 64, 0.3);
}

.page-home__step-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.6rem;
}

.page-home__step-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 0.3rem;
  letter-spacing: 0.02em;
}

.page-home__step-desc {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

.page-home__register-cta {
  text-align: center;
  margin-bottom: 2rem;
}

.page-home__register-btn {
  font-size: 1.05rem;
  padding: 0.9rem 2.5rem;
  border-radius: var(--border-radius-sharp);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-home__register-btn:hover,
.page-home__register-btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 0 24px var(--color-hover-glow);
}

.page-home__register-btn:active {
  transform: scale(0.97);
  box-shadow: 0 0 12px var(--color-accent-green);
  /* 模拟脉冲绿涟漪 */
  animation: page-home-ripple 0.4s ease-out;
}

@keyframes page-home-ripple {
  0% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.5), 0 0 0 0 rgba(0, 255, 136, 0.3); }
  100% { box-shadow: 0 0 0 12px rgba(0, 255, 136, 0), 0 0 0 24px rgba(0, 255, 136, 0); }
}

.page-home__register-image {
  max-width: 600px;
  margin: 0 auto;
  border-radius: var(--card-radius);
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
}

.page-home__register-img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== 最新动态 ===== */
.page-home__news {
  padding-top: 4rem;
  padding-bottom: 4rem;
  background-color: var(--color-primary-dark);
}

.page-home__news-intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 32rem;
}

.page-home__news-scroll {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent-gold) var(--color-border-subtle);
}

.page-home__news-scroll::-webkit-scrollbar {
  height: 6px;
}

.page-home__news-scroll::-webkit-scrollbar-track {
  background: var(--color-border-subtle);
  border-radius: 3px;
}

.page-home__news-scroll::-webkit-scrollbar-thumb {
  background-color: var(--color-accent-gold);
  border-radius: 3px;
}

.page-home__news-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background-color: var(--color-surface-light);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--card-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-lift), border-color var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  position: relative;
}

.page-home__news-card:hover,
.page-home__news-card:focus-within {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--color-accent-gold);
  box-shadow: 0 12px 32px var(--color-hover-glow);
}

.page-home__news-img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-home__news-card:hover .page-home__news-img {
  transform: scale(1.05);
}

.page-home__news-body {
  padding: 1rem 1.25rem 0.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-home__news-league {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.page-home__news-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.3;
}

.page-home__news-desc {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
  /* 悬停时显示摘要（通过展开描述） */
  max-height: 3em;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.page-home__news-card:hover .page-home__news-desc {
  max-height: 8em;
}

.page-home__news-link {
  display: block;
  padding: 0.5rem 1.25rem 1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-accent-green);
  text-decoration: none;
  transition: color var(--transition-base);
}

.page-home__news-link:hover,
.page-home__news-link:focus-visible {
  color: var(--color-accent-gold);
  text-shadow: 0 0 8px var(--color-hover-glow);
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-home__hero-inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }

  .page-home__hero-left {
    flex: 0 0 58%;
  }

  .page-home__hero-right {
    flex: 0 0 38%;
  }

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

  .page-home__hero-tagline {
    font-size: 1.8rem;
  }

  .page-home__orbit {
    width: 480px;
    height: 480px;
    top: 4%;
    right: 4%;
    opacity: 0.3;
  }

  .page-home__tool-item {
    flex-direction: row;
    padding: 2rem;
  }

  .page-home__tool-item--alt {
    flex-direction: row-reverse;
  }

  .page-home__tool-image {
    width: 45%;
  }

  .page-home__steps {
    flex-direction: row;
    gap: 2rem;
  }

  .page-home__step {
    flex: 1;
    padding: 2rem 1.5rem;
  }

  .page-home__step-number {
    font-size: 2.6rem;
  }

  .page-home__news-scroll {
    gap: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .page-home__hero-title {
    font-size: 6rem;
  }

  .page-home__hero-tagline {
    font-size: 2rem;
  }

  .page-home__orbit {
    width: 560px;
    height: 560px;
  }

  .page-home__tools-list {
    gap: 4rem;
  }

  .page-home__tool-item {
    padding: 2.5rem;
  }

  .page-home__tool-title {
    font-size: 1.75rem;
  }
}

@media (min-width: 1280px) {
  .page-home__hero-title {
    font-size: 7rem;
  }

  .page-home__orbit {
    width: 640px;
    height: 640px;
  }
}

/* ===== 窄屏安全 ===== */
@media (max-width: 480px) {
  .page-home__hero-title {
    font-size: 2.8rem;
  }

  .page-home__hero-tagline {
    font-size: 1.2rem;
  }

  .page-home__hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-home__hero-actions .btn {
    text-align: center;
  }

  .page-home__tool-item {
    padding: 1rem;
  }

  .page-home__step {
    padding: 1.25rem 1rem;
  }

  .page-home__news-card {
    flex: 0 0 260px;
  }

  .page-home__orbit {
    width: 200px;
    height: 200px;
    top: 2%;
    right: 1%;
    opacity: 0.12;
  }
}