.page-faq {
  --faq-cut: polygon(0 0, 100% 0, 100% calc(100% - 28px), 0 100%);
  background: var(--c-off-white);
  color: var(--c-black);
}

/* ===== 帮助中心首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 44px 0 56px;
  background: var(--gradient-flow);
  color: #ffffff;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(198, 255, 0, 0.22), transparent 60%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 28px;
  background: var(--c-neon);
  clip-path: polygon(0 56%, 100% 0, 100% 100%, 0 100%);
  opacity: 0.16;
  pointer-events: none;
}

.page-faq .faq-hero__eyebrow {
  color: var(--c-neon);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  max-width: 900px;
  font-family: var(--font-heading);
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__desc {
  max-width: 760px;
  margin: 0 0 26px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
}

.page-faq .faq-hero__btn-ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

.page-faq .faq-hero__btn-ghost:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}

.page-faq .faq-hero__media {
  max-width: 800px;
  margin: 12px 0 0;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 22px 44px rgba(0, 0, 0, 0.32);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 帮助台布局 ===== */
.page-faq .help-layout {
  position: relative;
}

.page-faq .help-layout__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding: 36px 0 64px;
}

.page-faq .help-layout__hint {
  display: none;
}

/* ===== 左侧帮助导航 ===== */
.page-faq .help-nav {
  position: relative;
  overflow: hidden;
  padding: 26px 20px;
  background: var(--c-navy);
  border-radius: 12px;
  color: #ffffff;
  box-shadow: 0 16px 40px rgba(10, 31, 68, 0.22);
}

.page-faq .help-nav::after {
  content: "FAQ";
  position: absolute;
  right: -18px;
  bottom: 8px;
  font-family: var(--font-data);
  font-size: 92px;
  font-weight: 700;
  line-height: 1;
  color: rgba(198, 255, 0, 0.06);
  pointer-events: none;
}

.page-faq .help-nav__eyebrow {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-neon);
}

.page-faq .help-nav__title {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
}

.page-faq .help-nav__links {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .help-nav__links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}

.page-faq .help-nav__links a:hover {
  background: rgba(198, 255, 0, 0.16);
  color: var(--c-neon);
}

.page-faq .help-nav__num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-orange);
}

.page-faq .help-nav__cta {
  position: relative;
  z-index: 1;
  width: 100%;
  justify-content: center;
}

/* ===== 右侧问答内容 ===== */
.page-faq .help-content {
  min-width: 0;
}

.page-faq .help-section {
  margin-bottom: 48px;
  scroll-margin-top: 120px;
}

.page-faq .help-section__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c-light-gray);
}

.page-faq .help-section__num {
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-orange);
  background: rgba(255, 122, 0, 0.12);
  padding: 4px 8px;
  border-radius: 4px;
}

.page-faq .help-section__head h2 {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
  color: var(--c-navy);
  line-height: 1.2;
}

.page-faq .help-section__head p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-gray);
}

/* ===== 手风琴条目 ===== */
.page-faq .faq-item {
  margin-bottom: 12px;
  background: #ffffff;
  border: 1px solid var(--c-light-gray);
  border-left: 4px solid var(--c-navy);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-faq .faq-item:hover {
  box-shadow: 0 8px 24px rgba(10, 31, 68, 0.08);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-orange);
  box-shadow: 0 12px 36px rgba(10, 31, 68, 0.1);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  padding: 18px 18px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-navy);
}

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

.page-faq .faq-item__q::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow: 0 0 0 3px rgba(198, 255, 0, 0.18);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.page-faq .faq-item[open] .faq-item__q::before {
  background: var(--c-orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 0, 0.16);
}

.page-faq .faq-item__q::after {
  content: "+";
  flex-shrink: 0;
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 24px;
  font-weight: 400;
  color: var(--c-orange);
  transition: transform 0.3s ease;
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  padding: 4px 20px 22px 40px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: #3a4250;
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

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

.page-faq .faq-item__a ul {
  margin: 0 0 12px;
  padding-left: 20px;
}

.page-faq .faq-item__a li {
  margin-bottom: 6px;
}

.page-faq .faq-item__a a {
  display: inline-block;
  margin-top: 6px;
  color: var(--c-navy);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--c-orange);
  transition: color 0.3s ease, border-color 0.3s ease;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-orange);
  border-color: var(--c-orange);
}

.page-faq .faq-item__btn {
  margin-top: 14px;
  text-decoration: none;
  border-bottom: none;
}

.page-faq .faq-item__btn:hover {
  color: #ffffff;
}

/* ===== 数据标签与图片 ===== */
.page-faq .stats-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.page-faq .faq-item__figure {
  margin: 0 0 14px;
  border: 1px solid var(--c-light-gray);
  border-radius: 10px;
  overflow: hidden;
  background: var(--c-off-white);
}

.page-faq .faq-item__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 回到顶部 ===== */
.page-faq .faq-back-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--c-navy);
  color: #ffffff;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(10, 31, 68, 0.24);
  opacity: 0.92;
  transition: opacity 0.3s ease, background 0.3s ease;
}

.page-faq .faq-back-top:hover {
  background: var(--c-orange);
  opacity: 1;
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 56px 0 64px;
  }

  .page-faq .faq-hero__title {
    font-size: 40px;
  }

  .page-faq .help-layout__inner {
    gap: 40px;
  }
}

@media (min-width: 1024px) {
  .page-faq .help-layout__inner {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 52px;
    padding-top: 48px;
    align-items: start;
  }

  .page-faq .help-nav {
    position: sticky;
    top: 96px;
    padding: 30px 24px;
    border-radius: 14px;
  }

  .page-faq .help-nav__links {
    display: block;
    margin: 0 0 28px;
  }

  .page-faq .help-nav__links li {
    margin-bottom: 4px;
  }

  .page-faq .help-nav__links a {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 8px;
    background: transparent;
    border-left: 3px solid transparent;
    font-size: 15px;
  }

  .page-faq .help-nav__links a:hover {
    background: rgba(198, 255, 0, 0.1);
    border-left-color: var(--c-neon);
    color: var(--c-neon);
  }

  .page-faq .help-nav__num {
    font-size: 13px;
  }

  .page-faq .help-section {
    margin-bottom: 56px;
  }

  .page-faq .help-section__head h2 {
    font-size: 28px;
  }
}