/* ===== 帮助中心页面专属样式 ===== */
.page-faq {
  --faq-space-card: #2a1250;
  --faq-gold-soft: rgba(255, 215, 0, 0.14);
  --faq-purple-line: rgba(155, 48, 255, 0.2);
  --faq-card-bg: #ffffff;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--deep-space);
  color: var(--text-white);
  padding: 36px 0 52px;
  overflow: hidden;
}

.page-faq .faq-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-faq .faq-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  opacity: 0.3;
}

.page-faq .faq-hero-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    rgba(26, 11, 46, 0.9) 0%,
    rgba(26, 11, 46, 0.78) 60%,
    rgba(42, 18, 80, 0.88) 100%);
  pointer-events: none;
}

.page-faq .faq-hero-content {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--text-white-70);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb .sep {
  color: var(--text-white-50);
}

.page-faq .faq-hero .breadcrumb .current {
  color: var(--electric-blue);
}

.page-faq .faq-kicker {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--electric-blue);
  background: rgba(0, 217, 255, 0.08);
  border: 1px solid rgba(0, 217, 255, 0.28);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  padding: 6px 12px;
  margin-bottom: 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(28px, 6.4vw, 44px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.page-faq .faq-hero .h1-sub {
  color: var(--text-white-70);
  font-size: 0.56em;
  font-weight: 700;
  letter-spacing: 0;
}

.page-faq .faq-hero-lead {
  max-width: 640px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-white-70);
  margin: 0 0 20px;
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 分类 Tab 导航 ---------- */
.page-faq .faq-tabs {
  position: sticky;
  top: var(--header-h);
  z-index: 40;
  background: rgba(26, 11, 46, 0.9);
  border-bottom: 1px solid var(--border-purple);
  box-shadow: 0 4px 20px rgba(13, 5, 24, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-faq .faq-tabs-container {
  display: flex;
  gap: 4px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-tabs-container::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-tab-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid transparent;
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
  color: var(--text-white-70);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--speed-fast), color var(--speed-fast), border-color var(--speed-fast);
}

.page-faq .faq-tab-link span {
  font-family: var(--font-heading);
  font-size: 10px;
  font-weight: 800;
  color: var(--gold);
  opacity: 0.78;
}

.page-faq .faq-tab-link:hover,
.page-faq .faq-tab-link:focus-visible {
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .faq-tab-link.is-active {
  background: rgba(155, 48, 255, 0.22);
  border-color: var(--border-purple);
  color: var(--text-white);
}

.page-faq .faq-tab-link.is-active span {
  opacity: 1;
  color: var(--gold);
}

.page-faq .faq-tab-link:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: -2px;
}

/* ---------- FAQ 正文区 ---------- */
.page-faq .faq-body {
  background-color: var(--cream);
  color: var(--text-dark);
  padding: 48px 0 64px;
}

.page-faq .faq-group {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--header-h) + 64px);
}

.page-faq .faq-group-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-purple-line);
}

.page-faq .faq-group-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 8px;
  background: var(--deep-space);
  color: var(--gold);
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 900;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-faq .faq-group-titlewrap {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-group-titlewrap .section-kicker {
  display: inline-block;
  margin-bottom: 2px;
}

.page-faq .faq-group-titlewrap h2 {
  margin: 4px 0 6px;
  font-family: var(--font-heading);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-dark);
}

.page-faq .faq-group-titlewrap p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dark-65);
}

/* ---------- 手风琴列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: 1px solid rgba(155, 48, 255, 0.16);
  border-left: 3px solid var(--neon-purple);
  border-radius: var(--radius);
  transition: box-shadow var(--speed-fast), border-color var(--speed-fast), background var(--speed-fast);
}

.page-faq .faq-item[open] {
  border-color: rgba(155, 48, 255, 0.3);
  box-shadow: 0 10px 32px rgba(155, 48, 255, 0.1);
  background: linear-gradient(180deg, #ffffff 0%, #fdf7ff 100%);
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 16px 16px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-dark);
  user-select: none;
}

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

.page-faq .faq-question::marker {
  content: "";
}

.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: -2px;
  border-radius: var(--radius);
}

.page-faq .faq-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--deep-space);
  color: var(--gold);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  border-radius: 4px;
}

.page-faq .faq-qtext {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-item[open] .faq-qtext {
  color: var(--purple-dark);
}

.page-faq .faq-toggle {
  flex-shrink: 0;
  position: relative;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(155, 48, 255, 0.3);
  border-radius: 50%;
  transition: transform var(--speed-mid), background var(--speed-fast), border-color var(--speed-fast);
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  background: var(--neon-purple);
  border-radius: 2px;
}

.page-faq .faq-toggle::before {
  width: 10px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.page-faq .faq-toggle::after {
  width: 2px;
  height: 10px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-toggle {
  transform: rotate(45deg);
  background: rgba(155, 48, 255, 0.12);
  border-color: var(--border-purple);
}

.page-faq .faq-answer {
  border-top: 1px dashed rgba(155, 48, 255, 0.22);
  padding: 4px 18px 18px 52px;
}

.page-faq .faq-answer p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-dark-65);
}

.page-faq .faq-answer a {
  color: var(--neon-purple);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(155, 48, 255, 0.3);
  text-underline-offset: 3px;
}

/* ---------- 设备适配示意图 ---------- */
.page-faq .faq-device-figure {
  margin: 28px 0 0;
  padding: 16px;
  background: var(--deep-space);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius);
  display: grid;
  gap: 14px;
}

.page-faq .faq-device-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-purple);
}

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

.page-faq .faq-device-figure figcaption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-white-70);
  text-align: center;
  padding: 0 8px;
}

/* ---------- 联系 CTA ---------- */
.page-faq .faq-contact-cta {
  position: relative;
  margin-top: 56px;
  padding: 36px 26px;
  background: linear-gradient(135deg, var(--faq-space-card) 0%, var(--deep-space) 100%);
  border: 1px solid var(--border-purple);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
  overflow: hidden;
}

.page-faq .faq-contact-cta::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -80px;
  top: -80px;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.24), transparent 65%);
  pointer-events: none;
}

.page-faq .faq-contact-cta::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  left: 34%;
  bottom: -90px;
  background: radial-gradient(circle, rgba(155, 48, 255, 0.2), transparent 65%);
  pointer-events: none;
}

.page-faq .faq-contact-copy {
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact-copy .section-kicker {
  color: var(--gold);
}

.page-faq .faq-contact-copy h2 {
  margin: 8px 0 12px;
  color: var(--text-white);
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
}

.page-faq .faq-contact-copy p {
  margin: 0;
  color: var(--text-white-70);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-contact-btn {
  position: relative;
  z-index: 1;
}

/* ---------- 桌面端布局 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 48px 0 72px;
  }

  .page-faq .faq-hero-shade {
    background: linear-gradient(90deg,
      rgba(26, 11, 46, 0.94) 0%,
      rgba(26, 11, 46, 0.8) 52%,
      rgba(36, 17, 64, 0.42) 100%);
  }

  .page-faq .faq-kicker {
    font-size: 12px;
  }

  .page-faq .faq-hero-lead {
    font-size: 17px;
    max-width: 560px;
  }

  .page-faq .faq-tabs-container {
    padding: 12px 0;
  }

  .page-faq .faq-tab-link {
    font-size: 14px;
    padding: 10px 20px;
  }

  .page-faq .faq-body {
    padding: 72px 0 88px;
  }

  .page-faq .faq-group {
    margin-bottom: 72px;
    padding-left: 20px;
  }

  .page-faq .faq-group-head {
    gap: 24px;
    margin-bottom: 30px;
  }

  .page-faq .faq-group-index {
    min-width: 56px;
    min-height: 56px;
    font-size: 20px;
  }

  .page-faq .faq-group-titlewrap p {
    font-size: 15px;
  }

  .page-faq .faq-question {
    font-size: 16px;
    padding: 20px 22px 20px 18px;
  }

  .page-faq .faq-answer {
    padding: 6px 24px 22px 64px;
  }

  .page-faq .faq-list {
    gap: 14px;
  }

  .page-faq .faq-device-figure {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: center;
    padding: 24px;
    gap: 20px;
  }

  .page-faq .faq-device-figure figcaption {
    text-align: left;
    font-size: 14px;
  }

  .page-faq .faq-contact-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding: 44px 48px;
  }

  .page-faq .faq-contact-copy {
    max-width: 660px;
  }

  .page-faq .faq-contact-btn {
    margin-top: 0;
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero h1 {
    font-size: 48px;
  }

  .page-faq .faq-group {
    scroll-margin-top: calc(var(--header-h) + 72px);
  }

  .page-faq .faq-body .container {
    max-width: 1080px;
  }
}