:root {
  /* 品牌核心色彩 Token (摘自设计规范与设计系统) */
  --xy-bg: #080B18;
  --xy-surface: #0E1328;
  --xy-surface-alt: #131A36;
  --xy-card: rgba(22, 28, 55, 0.72);
  --xy-card-solid: #151B33;
  --xy-card-hover: rgba(30, 38, 72, 0.82);
  
  --xy-primary: #8B7CFF;
  --xy-primary-hover: #9E91FF;
  --xy-lavender: #B7A7FF;
  --xy-lavender-subtle: rgba(183, 167, 255, 0.15);
  --xy-gold: #E6C98F;
  --xy-gold-subtle: rgba(230, 201, 143, 0.18);
  
  --xy-text: #F7F5FF;
  --xy-text-secondary: #B3B6CF;
  --xy-text-muted: #969BB8;
  --xy-border: rgba(255, 255, 255, 0.10);
  --xy-border-hover: rgba(183, 167, 255, 0.35);
  
  /* 五行标准视觉色彩 */
  --xy-wx-wood: #10B981;
  --xy-wx-fire: #F43F5E;
  --xy-wx-earth: #E6C98F;
  --xy-wx-metal: #94A3B8;
  --xy-wx-water: #38BDF8;

  /* 阴影与圆角 */
  --xy-radius-sm: 8px;
  --xy-radius-md: 14px;
  --xy-radius-lg: 20px;
  --xy-radius-xl: 28px;
  --xy-shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.36);
  --xy-shadow-glow: 0 0 24px rgba(139, 124, 255, 0.25);
  
  --xy-container-max: 1200px;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  min-height: 100vh;
  background-color: var(--xy-bg);
  color: var(--xy-text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  font-size: 15px;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% -10%, rgba(139, 124, 255, 0.18) 0%, transparent 60%),
    radial-gradient(circle at 90% 40%, rgba(230, 201, 143, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 10% 70%, rgba(183, 167, 255, 0.10) 0%, transparent 50%);
  background-attachment: fixed;
}

/* 星尘粒子网格纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.22;
  pointer-events: none;
  z-index: 0;
}

/* 容器布局 */
.xy-container {
  max-width: var(--xy-container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 顶部导航 */
.xy-header {
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--xy-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 11, 24, 0.78);
}

.xy-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.xy-brand-logo {
  width: 36px;
  height: 36px;
}

.xy-brand-text {
  display: flex;
  flex-direction: column;
}

.xy-brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--xy-text);
  line-height: 1.2;
}

.xy-brand-tagline {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--xy-lavender);
  text-transform: uppercase;
  font-weight: 500;
}

.xy-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.xy-nav-item {
  color: var(--xy-text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
  cursor: pointer;
}

.xy-nav-item:hover, .xy-nav-item.active {
  color: var(--xy-lavender);
}

.xy-header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.xy-lang-select {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--xy-border);
  color: var(--xy-text);
  padding: 6px 12px;
  border-radius: var(--xy-radius-sm);
  font-size: 13px;
  outline: none;
  cursor: pointer;
  transition: all 0.2s;
}

.xy-lang-select:focus, .xy-lang-select:hover {
  border-color: var(--xy-primary);
  background: rgba(139, 124, 255, 0.12);
}

/* Hero 区域 */
.xy-hero {
  padding: 64px 0 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 48px;
}

.xy-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--xy-lavender-subtle);
  border: 1px solid rgba(183, 167, 255, 0.3);
  border-radius: 999px;
  font-size: 12px;
  color: var(--xy-lavender);
  margin-bottom: 20px;
  font-weight: 500;
}

.xy-hero-title {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--xy-text);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.xy-hero-title span {
  background: linear-gradient(135deg, #FFF 20%, var(--xy-lavender) 60%, var(--xy-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.xy-hero-desc {
  font-size: 16px;
  color: var(--xy-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 540px;
}

.xy-hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.xy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: var(--xy-radius-md);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  outline: none;
}

.xy-btn-primary {
  background: var(--xy-lavender);
  color: #0B0E1E;
  box-shadow: 0 4px 20px rgba(183, 167, 255, 0.35);
}

.xy-btn-primary:hover {
  background: #C8BCFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(183, 167, 255, 0.48);
}

.xy-btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--xy-text);
  border: 1px solid var(--xy-border);
}

.xy-btn-outline:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--xy-lavender);
  transform: translateY(-2px);
}

.xy-hero-disclaimer {
  margin-top: 18px;
  font-size: 12px;
  color: var(--xy-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Hero 右侧星盘插画 */
.xy-hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.xy-astrolabe-wrapper {
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1;
  position: relative;
  animation: floatOrb 8s ease-in-out infinite;
}

@keyframes floatOrb {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

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

.xy-orbit-circle {
  animation: spinOrbit 60s linear infinite;
  transform-origin: center;
}

/* 四大能力卡片 */
.xy-section-header {
  text-align: center;
  margin-bottom: 36px;
}

.xy-section-tag {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--xy-gold);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 8px;
}

.xy-section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--xy-text);
  margin-bottom: 12px;
}

.xy-section-subtitle {
  font-size: 15px;
  color: var(--xy-text-secondary);
}

.xy-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}

.xy-feature-card {
  background: var(--xy-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-lg);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.xy-feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--xy-primary), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.xy-feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--xy-border-hover);
  background: var(--xy-card-hover);
  box-shadow: var(--xy-shadow-glow);
}

.xy-feature-card:hover::before {
  opacity: 1;
}

.xy-feature-card.active {
  border-color: var(--xy-primary);
  background: rgba(35, 42, 85, 0.88);
}

.xy-feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--xy-radius-md);
  background: rgba(139, 124, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--xy-lavender);
}

.xy-feature-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--xy-text);
  margin-bottom: 8px;
}

.xy-feature-desc {
  font-size: 13px;
  color: var(--xy-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.xy-feature-arrow {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--xy-lavender);
}

/* 核心工作台与分步向导（Wizard） */
.xy-wizard-container {
  background: var(--xy-card-solid);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-xl);
  padding: 36px;
  box-shadow: var(--xy-shadow-soft);
  margin-bottom: 64px;
}

.xy-wizard-nav {
  display: flex;
  border-bottom: 1px solid var(--xy-border);
  margin-bottom: 32px;
  gap: 12px;
  overflow-x: auto;
}

.xy-tab-btn {
  padding: 12px 20px;
  background: none;
  border: none;
  color: var(--xy-text-muted);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.xy-tab-btn:hover {
  color: var(--xy-text);
}

.xy-tab-btn.active {
  color: var(--xy-lavender);
  border-bottom-color: var(--xy-primary);
  font-weight: 600;
}

/* 表单组件规范 */
.xy-form-group {
  margin-bottom: 20px;
}

.xy-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.xy-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--xy-text-secondary);
  margin-bottom: 8px;
}

.xy-input, .xy-select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(14, 19, 40, 0.85);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-sm);
  color: var(--xy-text);
  font-size: 14px;
  outline: none;
  transition: all 0.2s;
}

.xy-input:focus, .xy-select:focus {
  border-color: var(--xy-primary);
  box-shadow: 0 0 0 3px rgba(139, 124, 255, 0.2);
  background: #141A38;
}

/* 结果报告展示 */
.xy-report-shell {
  margin-top: 32px;
  border-top: 1px solid var(--xy-border);
  padding-top: 32px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
}

.xy-report-nav {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.xy-report-nav-item {
  padding: 10px 16px;
  border-radius: var(--xy-radius-sm);
  color: var(--xy-text-secondary);
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
}

.xy-report-nav-item:hover, .xy-report-nav-item.active {
  background: rgba(139, 124, 255, 0.15);
  color: var(--xy-lavender);
  font-weight: 600;
}

.xy-report-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.xy-insight-card {
  background: var(--xy-surface);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-lg);
  padding: 24px;
}

.xy-insight-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.xy-insight-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--xy-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.xy-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.xy-tag-gold {
  background: var(--xy-gold-subtle);
  color: var(--xy-gold);
  border: 1px solid rgba(230, 201, 143, 0.3);
}

.xy-tag-primary {
  background: var(--xy-lavender-subtle);
  color: var(--xy-lavender);
  border: 1px solid rgba(183, 167, 255, 0.3);
}

/* 八字排盘四柱九宫格 */
.xy-bazi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.xy-bazi-col {
  background: rgba(22, 28, 55, 0.85);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-md);
  padding: 14px 8px;
  text-align: center;
}

.xy-bazi-lbl {
  font-size: 12px;
  color: var(--xy-text-muted);
  margin-bottom: 8px;
}

.xy-bazi-gz {
  font-size: 22px;
  font-weight: 700;
  color: var(--xy-gold);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.xy-bazi-ss {
  font-size: 12px;
  color: var(--xy-lavender);
}

/* 五行分布条与能量图 */
.xy-wuxing-bar {
  display: flex;
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  margin: 14px 0 10px;
  background: rgba(255, 255, 255, 0.08);
}

.xy-wuxing-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--xy-text-secondary);
}

.xy-wuxing-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.xy-wuxing-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

/* 解锁与价值卡片 */
.xy-paywall-box {
  background: linear-gradient(135deg, rgba(30, 24, 55, 0.85) 0%, rgba(20, 26, 52, 0.85) 100%);
  border: 1px solid rgba(183, 167, 255, 0.3);
  border-radius: var(--xy-radius-lg);
  padding: 28px;
  text-align: center;
  margin-top: 20px;
  box-shadow: 0 4px 24px rgba(139, 124, 255, 0.12);
}

.xy-paywall-price {
  font-size: 32px;
  font-weight: 800;
  color: var(--xy-gold);
  margin-bottom: 8px;
}

.xy-paywall-price small {
  font-size: 13px;
  color: var(--xy-text-muted);
  font-weight: 400;
}

/* FAQ 常见问答 */
.xy-faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 64px;
}

.xy-faq-item {
  background: var(--xy-card);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-md);
  padding: 20px;
}

.xy-faq-q {
  font-size: 15px;
  font-weight: 600;
  color: var(--xy-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.xy-faq-a {
  font-size: 13px;
  color: var(--xy-text-secondary);
  line-height: 1.7;
}

/* 页脚 */
.xy-footer {
  border-top: 1px solid var(--xy-border);
  padding: 48px 0 32px;
  text-align: center;
  font-size: 13px;
  color: var(--xy-text-muted);
}

.xy-footer p {
  margin-bottom: 8px;
}

/* 响应式调整 */
@media (max-width: 1024px) {
  .xy-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .xy-report-shell {
    grid-template-columns: 1fr;
  }
  .xy-report-nav {
    position: static;
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 8px;
  }
}

@media (max-width: 768px) {
  .xy-hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 36px 0 24px;
  }
  .xy-hero-desc {
    margin: 0 auto 28px;
  }
  .xy-hero-cta {
    justify-content: center;
  }
  .xy-hero-disclaimer {
    justify-content: center;
  }
  .xy-hero-visual {
    order: -1;
  }
  .xy-astrolabe-wrapper {
    max-width: 260px;
  }
  .xy-hero-title {
    font-size: 30px;
  }
  .xy-features-grid {
    grid-template-columns: 1fr;
  }
  .xy-wizard-container {
    padding: 20px 16px;
  }
  .xy-form-row {
    grid-template-columns: 1fr;
  }
  .xy-faq-grid {
    grid-template-columns: 1fr;
  }
  .xy-bazi-gz {
    font-size: 18px;
  }
}