/* =============================================
   page-faq 专属样式
   所有选择器限定在 .page-faq 作用域内
   ============================================= */
.page-faq {
  --faq-planet-size: 120px;
  --faq-planet-icon-size: 48px;
  --faq-gap: 2rem;
  --faq-border-radius: 50%;
  --faq-transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --faq-answer-max: 600px;
  --faq-grid-color: rgba(46, 74, 106, 0.25);
  --faq-glow-gold: rgba(240, 192, 64, 0.35);
  --faq-glow-green: rgba(0, 255, 136, 0.3);
  --faq-star-dot: #ffffff;

  background-color: var(--color-primary-dark, #0B1D3A);
  position: relative;
  /* 微弱的星空装饰 — 用径向渐变模拟远处星光 */
  background-image:
    radial-gradient(1px 1px at 10% 20%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 30% 65%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 12%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1.2px 1.2px at 70% 48%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1px 1px at 88% 78%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1.4px 1.4px at 15% 90%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1px 1px at 92% 25%, var(--faq-star-dot) 0%, transparent 100%),
    radial-gradient(1.2px 1.2px at 45% 42%, var(--faq-star-dot) 0%, transparent 100%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: 1.5rem;
  padding-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary, #B0C4DE);
}

.page-faq .breadcrumb-link {
  color: var(--color-accent-gold, #F0C040);
  text-decoration: none;
  transition: color var(--transition-base, 0.25s ease);
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--color-accent-green, #00FF88);
  outline: 2px solid var(--color-accent-green, #00FF88);
  outline-offset: 2px;
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "／";
  padding: 0 0.5rem;
  color: var(--color-text-secondary, #B0C4DE);
}

/* ---------- 页面头部 ---------- */
.page-faq .faq-header {
  padding-top: 1rem;
  padding-bottom: 2rem;
  text-align: center;
}

.page-faq .faq-title {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: var(--color-accent-gold, #F0C040);
  text-shadow: 0 0 12px var(--faq-glow-gold), 0 0 30px rgba(240, 192, 64, 0.15);
  letter-spacing: 0.05em;
  margin: 0 0 0.5rem;
  line-height: 1.15;
}

.page-faq .faq-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary, #B0C4DE);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---------- 左右布局容器 ---------- */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  padding-bottom: 4rem;
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }
}

/* ---------- 左侧：问题列表 ---------- */
.page-faq .faq-questions {
  flex: 1 1 60%;
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

/* ---------- 单个问题项 ---------- */
.page-faq .faq-item {
  border: none;
  background: transparent;
  border-radius: 16px;
  overflow: visible;
  transition: all var(--faq-transition);
}

.page-faq .faq-item[open] {
  /* 展开时增加底部留白 */
  padding-bottom: 0.5rem;
}

/* ---------- summary （星球触发器） ---------- */
.page-faq .faq-summary {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  padding: 0;
  margin: 0;
  position: relative;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-summary:focus-visible {
  outline: 2px solid var(--color-accent-green, #00FF88);
  outline-offset: 6px;
  border-radius: var(--faq-border-radius);
}

/* ---------- 星球形按钮 ---------- */
.page-faq .faq-planet {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: var(--faq-planet-size);
  height: var(--faq-planet-size);
  border-radius: var(--faq-border-radius);
  background: radial-gradient(circle at 35% 30%, #1e3a5f, #0b1d3a 70%, #071228);
  border: 2.5px solid rgba(240, 192, 64, 0.6);
  box-shadow: 0 0 20px var(--faq-glow-gold), inset 0 0 30px rgba(0, 255, 136, 0.08);
  transition: transform var(--faq-transition), box-shadow var(--faq-transition), border-color var(--faq-transition);
  position: relative;
  padding: 0.5rem;
  gap: 0.25rem;
}

/* 悬停增强 */
.page-faq .faq-summary:hover .faq-planet,
.page-faq .faq-summary:focus-within .faq-planet {
  box-shadow: 0 0 32px var(--faq-glow-gold), 0 0 60px rgba(240, 192, 64, 0.15), inset 0 0 30px rgba(0, 255, 136, 0.12);
  border-color: var(--color-accent-gold, #F0C040);
  transform: scale(1.03);
}

/* 展开时星球旋转 */
.page-faq .faq-item[open] .faq-planet {
  transform: rotate(360deg) scale(1.02);
  box-shadow: 0 0 32px var(--faq-glow-gold), 0 0 60px rgba(240, 192, 64, 0.2), inset 0 0 30px rgba(0, 255, 136, 0.15);
  border-color: var(--color-accent-green, #00FF88);
}

/* 星球图标 */
.page-faq .faq-planet-icon {
  width: var(--faq-planet-icon-size);
  height: var(--faq-planet-icon-size);
  border-radius: 50%;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
  background: var(--color-surface-light, #1A2F4A);
}

/* 星球标签 */
.page-faq .faq-planet-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-primary, #FFFFFF);
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-align: center;
  font-family: var(--font-body, sans-serif);
  max-width: 100%;
  word-break: keep-all;
}

/* ---------- 答案区 ---------- */
.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, padding 0.4s ease, opacity 0.4s ease;
  opacity: 0;
  padding: 0 1rem;
  /* 网格线背景 */
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 19px, var(--faq-grid-color) 19px, var(--faq-grid-color) 20px),
    repeating-linear-gradient(90deg, transparent, transparent 19px, var(--faq-grid-color) 19px, var(--faq-grid-color) 20px);
  background-size: 20px 20px;
  background-position: 0 0;
  border-radius: 0 0 12px 12px;
  border-left: 2px solid var(--faq-grid-color);
  border-right: 2px solid var(--faq-grid-color);
  border-bottom: 2px solid var(--faq-grid-color);
  border-top: none;
  margin-top: -4px;
}

.page-faq .faq-item[open] .faq-answer {
  max-height: var(--faq-answer-max);
  opacity: 1;
  padding: 1.25rem 1.5rem 1.75rem;
}

/* 答案标题 */
.page-faq .faq-answer-heading {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.3rem;
  color: var(--color-accent-gold, #F0C040);
  margin: 0 0 0.75rem;
  line-height: 1.3;
  text-shadow: 0 0 6px var(--faq-glow-gold);
}

/* 答案正文 */
.page-faq .faq-answer p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 0.75rem;
}

.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

/* 内链 */
.page-faq .faq-link {
  color: var(--color-accent-green, #00FF88);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-base, 0.25s ease), text-shadow var(--transition-base, 0.25s ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--color-accent-gold, #F0C040);
  text-shadow: 0 0 8px var(--faq-glow-gold);
  outline: none;
}

/* ---------- 注册步骤列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: step-counter;
  padding: 0;
  margin: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-faq .faq-steps li {
  counter-increment: step-counter;
  padding-left: 2.5rem;
  position: relative;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary, #FFFFFF);
}

.page-faq .faq-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  background: var(--color-accent-gold, #F0C040);
  color: var(--color-primary-dark, #0B1D3A);
  font-weight: 900;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  box-shadow: 0 0 10px var(--faq-glow-gold);
}

/* 注册流程示意图 */
.page-faq .faq-step-visual {
  margin: 1rem 0 1.25rem;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-border-subtle, #2E4A6A);
  background: var(--color-surface-light, #1A2F4A);
  display: inline-block;
  width: 100%;
  max-width: 400px;
}

.page-faq .faq-step-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: contain;
}

/* ---------- 联系列表 ---------- */
.page-faq .faq-contact-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-faq .faq-contact-list li {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary, #FFFFFF);
  padding: 0.35rem 0 0.35rem 1.5rem;
  position: relative;
}

.page-faq .faq-contact-list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0.35rem;
  color: var(--color-accent-gold, #F0C040);
  font-size: 0.7rem;
}

.page-faq .faq-contact-list strong {
  color: var(--color-accent-gold, #F0C040);
}

/* ---------- 右侧：技能树 ---------- */
.page-faq .faq-skill-tree {
  flex: 1 1 35%;
  min-width: 220px;
  background: var(--color-surface-light, #1A2F4A);
  border-radius: 16px;
  padding: 1.5rem 1rem 2rem;
  border: 1px solid var(--color-border-subtle, #2E4A6A);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
  align-self: stretch;
}

/* 装饰：微弱星空 */
.page-faq .faq-skill-tree::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 15% 30%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 15%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1.2px 1.2px at 85% 70%, rgba(255,255,255,0.2) 0%, transparent 100%);
  pointer-events: none;
}

.page-faq .skill-tree-title {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.3rem;
  color: var(--color-accent-gold, #F0C040);
  text-shadow: 0 0 8px var(--faq-glow-gold);
  text-align: center;
  margin: 0 0 1rem;
  letter-spacing: 0.06em;
  position: relative;
}

.page-faq .skill-tree-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.page-faq .skill-tree-svg {
  width: 100%;
  max-width: 200px;
  height: auto;
  display: block;
  overflow: visible;
}

/* SVG 节点交互 */
.page-faq .skill-node {
  cursor: pointer;
  transition: transform var(--transition-base, 0.25s ease);
}

.page-faq .skill-node:hover {
  transform: scale(1.12);
  transform-origin: center;
}

.page-faq .skill-node:focus-within {
  outline: none;
}

.page-faq .skill-node a:focus-visible {
  outline: 2px solid var(--color-accent-green, #00FF88);
  outline-offset: 4px;
  border-radius: 50%;
}

.page-faq .skill-node text {
  pointer-events: none;
  user-select: none;
}

/* 节点悬停提示由 SVG title 提供 */
/* 额外增强：悬停时圆圈发光 */
.page-faq .skill-node:hover circle {
  stroke-width: 3.5;
  filter: url(#glowNode);
}

.page-faq .skill-tree-note {
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0C4DE);
  text-align: center;
  margin: 1rem 0 0;
  line-height: 1.4;
  position: relative;
}

/* ---------- 响应式增强 ---------- */
@media (max-width: 480px) {
  .page-faq {
    --faq-planet-size: 100px;
    --faq-planet-icon-size: 40px;
    --faq-gap: 1.5rem;
  }

  .page-faq .faq-title {
    font-size: 2rem;
  }

  .page-faq .faq-desc {
    font-size: 0.95rem;
  }

  .page-faq .faq-answer {
    padding: 0 0.5rem;
  }

  .page-faq .faq-item[open] .faq-answer {
    padding: 1rem 1rem 1.5rem;
  }

  .page-faq .faq-answer-heading {
    font-size: 1.1rem;
  }

  .page-faq .faq-steps li {
    padding-left: 2.2rem;
    font-size: 0.95rem;
  }

  .page-faq .faq-steps li::before {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.8rem;
  }

  .page-faq .faq-contact-list li {
    font-size: 0.95rem;
    padding-left: 1.2rem;
  }

  .page-faq .faq-skill-tree {
    padding: 1rem 0.75rem 1.5rem;
  }

  .page-faq .skill-tree-title {
    font-size: 1.1rem;
  }

  .page-faq .skill-tree-svg {
    max-width: 160px;
  }
}

@media (min-width: 481px) and (max-width: 899px) {
  .page-faq .faq-layout {
    gap: 2rem;
  }

  .page-faq .faq-skill-tree {
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
  }

  .page-faq .skill-tree-svg {
    max-width: 180px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    padding-bottom: 5rem;
  }

  .page-faq .faq-questions {
    flex: 1 1 58%;
  }

  .page-faq .faq-skill-tree {
    flex: 1 1 34%;
    position: sticky;
    top: 100px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-questions {
    flex: 1 1 60%;
  }

  .page-faq .faq-skill-tree {
    flex: 1 1 32%;
  }
}

/* ---------- 打印与运动偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-planet,
  .page-faq .faq-answer {
    transition: none !important;
  }

  .page-faq .faq-item[open] .faq-planet {
    transform: none;
  }

  .page-faq .skill-node:hover {
    transform: none;
  }
}

@media print {
  .page-faq .faq-skill-tree {
    display: none;
  }

  .page-faq .faq-questions {
    flex: 1 1 100%;
  }

  .page-faq .faq-answer {
    max-height: none !important;
    opacity: 1 !important;
    padding: 1rem 1.5rem !important;
  }
}