/* ========== NG赛场 FAQ 页面专属样式 ========== */

.page-faq {
  background: var(--bg-deep);
  color: var(--beige);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 28px 0 0;
  margin: 0;
  list-style: none;
  font-size: 14px;
  color: var(--text-dim);
}
.page-faq .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  color: var(--terracotta);
}
.page-faq .breadcrumb a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.page-faq .breadcrumb a:hover {
  border-color: var(--neon);
}

/* 顶部主视觉 */
.page-faq .faq-hero {
  position: relative;
  padding: 20px 0 44px;
  background-image:
    linear-gradient(rgba(245, 239, 230, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 239, 230, .04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -100px;
  top: 30px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(57, 255, 20, .16), transparent 68%);
  pointer-events: none;
}
.page-faq .faq-hero-copy {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero .tag {
  display: inline-block;
  margin-bottom: 12px;
}
.page-faq .faq-hero-copy h1 {
  margin: 0 0 14px;
  font-size: 40px;
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
}
.page-faq .faq-hero-copy p {
  margin: 0;
  max-width: 36em;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.7;
}

/* 统计指标 */
.page-faq .faq-hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero-metric {
  background: rgba(245, 239, 230, .06);
  padding: 16px 12px 14px;
  border-top: 3px solid var(--neon);
}
.page-faq .faq-hero-metric .stat-value {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--neon);
}
.page-faq .faq-hero-metric .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-dim);
}

/* 快速帮助索引 */
.page-faq .faq-index {
  padding: 52px 0 56px;
  background: linear-gradient(180deg, var(--bg-abyss), var(--bg-deep));
}
.page-faq .faq-index-grid {
  display: grid;
  gap: 36px;
}
.page-faq .faq-index-tools h2,
.page-faq .faq-qa-head h2,
.page-faq .faq-support-copy h2 {
  margin: 0 0 10px;
  font-size: 30px;
  line-height: 1.2;
  font-weight: 900;
}
.page-faq .faq-index-desc,
.page-faq .faq-qa-head > p:last-child,
.page-faq .faq-support-copy > p:not(.faq-qa-number) {
  margin: 0 0 20px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* 搜索框 */
.page-faq .faq-search-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--grey);
  border: 2px solid var(--border-weak);
  padding: 0 16px;
  height: 54px;
  transition: border-color .2s, box-shadow .2s;
}
.page-faq .faq-search-box:focus-within {
  border-color: var(--neon);
  box-shadow: 0 0 0 4px rgba(57, 255, 20, .1);
}
.page-faq .faq-search-box svg {
  color: var(--neon);
  flex-shrink: 0;
}
.page-faq .faq-search-box input[type="search"] {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--beige);
  font: 400 15px/1.5 var(--font-body);
}
.page-faq .faq-search-box input[type="search"]::placeholder {
  color: rgba(245, 239, 230, .5);
}

/* 分类标签 */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.page-faq .faq-tags .tag {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--border-weak);
  background: transparent;
  color: var(--beige);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color .2s, color .2s, background-color .2s;
}
.page-faq .faq-tags .tag:hover,
.page-faq .faq-tags .tag:focus {
  border-color: var(--neon);
  color: var(--neon);
  background: rgba(57, 255, 20, .06);
}
.page-faq .faq-tags .tag-hot {
  border-color: var(--orange);
  color: var(--orange);
}
.page-faq .faq-tags .tag-hot:hover,
.page-faq .faq-tags .tag-hot:focus {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 107, 0, .08);
}

/* 索引装饰图 */
.page-faq .faq-index-figure {
  margin: 28px 0 0;
}
.page-faq .faq-index-figure img {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  border: 1px solid var(--border-weak);
}

/* 高频问题列表 */
.page-faq .faq-index-hot {
  padding-top: 2px;
}
.page-faq .faq-index-hot h3 {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--terracotta);
  font-size: 18px;
  font-weight: 800;
  color: var(--beige);
}
.page-faq .faq-hot-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faq-hot;
}
.page-faq .faq-hot-list li {
  counter-increment: faq-hot;
  border-bottom: 1px solid var(--border-weak);
}
.page-faq .faq-hot-list a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 4px;
  color: var(--beige);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s, padding-left .2s;
}
.page-faq .faq-hot-list a::before {
  content: counter(faq-hot, decimal-leading-zero);
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--neon);
  flex-shrink: 0;
}
.page-faq .faq-hot-list a:hover {
  color: var(--neon);
  padding-left: 10px;
}
.page-faq .faq-index-note {
  margin: 20px 0 0;
  font-size: 14px;
  color: var(--text-dim);
}
.page-faq .faq-index-note a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 问答区块 */
.page-faq .faq-qa-block {
  padding: 52px 0 56px;
  scroll-margin-top: 120px;
}
.page-faq .faq-qa-alt {
  background: linear-gradient(180deg, var(--bg-deep), var(--bg-abyss), var(--bg-deep));
}
.page-faq .faq-qa-head {
  max-width: 720px;
  margin-bottom: 28px;
}
.page-faq .faq-qa-number {
  margin: 0 0 8px;
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: .14em;
  color: var(--orange);
}

/* 手风琴 */
.page-faq .faq-stack {
  display: grid;
}
.page-faq .faq-stack-wide {
  max-width: 880px;
}
.page-faq .faq-item {
  scroll-margin-top: 120px;
  border-bottom: 1px solid var(--border-weak);
}
.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--neon);
  transition: color .2s, background-color .2s;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::-moz-list-bullet {
  color: transparent;
}
.page-faq .faq-item summary:hover {
  color: var(--beige);
}
.page-faq .faq-item[open] summary {
  color: var(--beige);
}
.page-faq .faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  color: var(--orange);
  transition: transform .25s, color .25s;
}
.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--neon);
}

/* 锚点跳转时高亮目标 */
.page-faq .faq-item:target summary {
  background: rgba(57, 255, 20, .08);
  padding-left: 10px;
}

/* 答案区：岩灰底 */
.page-faq .faq-answer {
  margin: 0 4px 18px;
  padding: 18px 20px 20px;
  background: var(--grey);
  border-left: 3px solid var(--neon);
  color: var(--beige);
  font-size: 15px;
  line-height: 1.75;
}
.page-faq .faq-answer p {
  margin: 0 0 10px;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item[open] .faq-answer {
  animation: faqReveal .3s ease both;
}
@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 功能布局：问答 + 手机示意 */
.page-faq .faq-feature-layout {
  display: grid;
  gap: 32px;
  align-items: start;
}
.page-faq .faq-mobile-visual {
  text-align: center;
}
.page-faq .faq-phone-image {
  display: block;
  width: 100%;
  max-width: 190px;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--border-weak);
  box-shadow: 0 20px 44px rgba(0, 0, 0, .42);
}
.page-faq .faq-visual-caption {
  margin: 14px auto 0;
  max-width: 220px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* 联系支持 */
.page-faq .faq-support {
  padding: 52px 0 68px;
  scroll-margin-top: 120px;
}
.page-faq .faq-support-inner {
  display: grid;
  gap: 30px;
  padding: 30px 24px 32px;
  background:
    linear-gradient(135deg, rgba(57, 255, 20, .1), transparent 55%),
    var(--grey);
  border: 1px solid var(--border-weak);
  box-shadow: 0 18px 50px rgba(0, 0, 0, .3);
}
.page-faq .faq-support-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-support-list li {
  display: grid;
  gap: 4px;
  font-family: var(--font-data);
  font-size: 15px;
  color: var(--beige);
  word-break: break-word;
}
.page-faq .faq-support-list li span {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-dim);
}
.page-faq .faq-support-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--border-weak);
  font-size: 14px;
  color: var(--text-dim);
}
.page-faq .faq-support-meta span {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--neon);
}
.page-faq .faq-support-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
}
.page-faq .faq-support-cta .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border: none;
  background: var(--neon);
  color: var(--bg-deep);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 0 0 3px rgba(57, 255, 20, .22);
  transition: box-shadow .2s, transform .2s;
}
.page-faq .faq-support-cta .btn:hover {
  box-shadow: 0 0 0 6px rgba(57, 255, 20, .3);
  transform: translateY(-2px);
}
.page-faq .faq-support-cta p {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}
.page-faq .faq-support-cta p a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ========== 桌面端 ≥900px ========== */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: end;
    padding: 44px 0 64px;
  }
  .page-faq .faq-hero-copy h1 {
    font-size: 60px;
  }
  .page-faq .faq-hero-copy p {
    font-size: 18px;
  }
  .page-faq .faq-hero-metrics {
    margin-top: 0;
    gap: 14px;
  }

  .page-faq .faq-index {
    padding: 64px 0;
  }
  .page-faq .faq-index-grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 48px;
  }
  .page-faq .faq-index-tools h2,
  .page-faq .faq-qa-head h2,
  .page-faq .faq-support-copy h2 {
    font-size: 38px;
  }

  .page-faq .faq-qa-block {
    padding: 64px 0;
  }
  .page-faq .faq-qa-head {
    margin-bottom: 36px;
  }
  .page-faq .faq-feature-layout {
    grid-template-columns: 1fr 250px;
    gap: 48px;
  }
  .page-faq .faq-mobile-visual {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-support {
    padding: 64px 0 80px;
  }
  .page-faq .faq-support-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 48px;
    padding: 44px 48px;
  }
  .page-faq .faq-support-cta {
    min-width: 250px;
    align-items: flex-end;
  }
}