.page-faq {
  --faq-accent: var(--violet);
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(18px, 3vw, 32px) 0 clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--rail);
  background:
    radial-gradient(90% 80% at 88% 0%, rgba(122, 92, 255, 0.22), transparent 62%),
    radial-gradient(70% 60% at 4% 100%, rgba(61, 242, 214, 0.10), transparent 60%);
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(16px, 2vw, 24px);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(18px, 3vw, 38px);
  border: 1px solid var(--rail);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(13, 21, 48, 0.88), rgba(6, 10, 24, 0.62));
  overflow: hidden;
}

.page-faq .faq-hero__grid::before {
  content: "";
  position: absolute;
  inset: 7px;
  pointer-events: none;
  opacity: 0.55;
  background:
    linear-gradient(var(--cyan), var(--cyan)) left top / 20px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left top / 1px 20px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right top / 20px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right top / 1px 20px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left bottom / 20px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left bottom / 1px 20px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right bottom / 20px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right bottom / 1px 20px no-repeat;
}

.page-faq .faq-hero__copy h1 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4.4vw, 2.85rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  max-width: 48ch;
  margin: 0;
  font-size: clamp(0.94rem, 1.05vw, 1.02rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px dashed rgba(34, 51, 92, 0.9);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 92px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-faq .faq-stat__label {
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--rail);
}

.page-faq .faq-hero__media figcaption {
  margin-top: 10px;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }
}

/* ---------- 场景快捷卡 ---------- */
.page-faq .faq-scenes {
  padding: clamp(34px, 5vw, 62px) 0 clamp(22px, 3vw, 38px);
}

.page-faq .faq-scenes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 26px;
}

@media (min-width: 620px) {
  .page-faq .faq-scenes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-scenes__grid {
    grid-template-columns: repeat(auto-fit, minmax(196px, 1fr));
    gap: 14px;
  }
}

.page-faq .faq-scene {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 16px 20px;
  border: 1px solid var(--rail);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(13, 21, 48, 0.92), rgba(11, 18, 48, 0.72));
  color: var(--ink);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.page-faq .faq-scene::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--faq-accent);
  opacity: 0.9;
}

.page-faq .faq-scene:nth-child(2) { --faq-accent: var(--cyan); }
.page-faq .faq-scene:nth-child(3) { --faq-accent: var(--amber); }
.page-faq .faq-scene:nth-child(4) { --faq-accent: var(--cyan); }
.page-faq .faq-scene:nth-child(5) { --faq-accent: var(--violet); }

.page-faq .faq-scene:hover,
.page-faq .faq-scene:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(122, 92, 255, 0.6);
  background: linear-gradient(165deg, rgba(20, 30, 66, 0.95), rgba(11, 18, 48, 0.85));
}

.page-faq .faq-scene__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--faq-accent);
}

.page-faq .faq-scene__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.45;
}

.page-faq .faq-scene__text {
  font-size: 0.82rem;
  line-height: 1.68;
  color: var(--muted);
}

.page-faq .faq-scene__go {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
}

/* ---------- 主体：目录 + 问答 ---------- */
.page-faq .faq-main {
  padding: clamp(26px, 4vw, 48px) 0 clamp(48px, 6vw, 88px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 40px;
  }
}

.page-faq .faq-toc {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--rail);
  border-radius: var(--radius);
  background: rgba(13, 21, 48, 0.85);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__label {
  display: none;
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--ink);
  border-color: var(--rail);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--violet);
}

.page-faq .faq-toc__back {
  display: none;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  text-decoration: none;
}

@media (min-width: 1024px) {
  .page-faq .faq-toc {
    position: sticky;
    top: 92px;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    padding: 20px 16px;
    overflow: visible;
  }

  .page-faq .faq-toc__label {
    display: block;
    margin: 0;
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 4px;
  }

  .page-faq .faq-toc__link {
    width: 100%;
    padding: 10px 10px;
    border-radius: 8px;
    border-left: 2px solid transparent;
    white-space: normal;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    background: var(--glass);
    border-left-color: var(--cyan);
  }

  .page-faq .faq-toc__back {
    display: inline-block;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-bottom: clamp(26px, 3.5vw, 42px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  padding-top: clamp(24px, 3vw, 38px);
  border-top: 1px dashed rgba(34, 51, 92, 0.85);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  margin-top: 3px;
  padding: 4px 8px;
  border: 1px solid rgba(255, 181, 71, 0.35);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.12rem, 2vw, 1.45rem);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__desc {
  margin: 6px 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--rail);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(13, 21, 48, 0.96), rgba(11, 18, 48, 0.9));
  overflow: hidden;
  transition: border-color 0.18s ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  border-color: rgba(122, 92, 255, 0.55);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.62;
  color: var(--ink);
}

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

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-item__body {
  padding: 14px 18px 18px;
  margin-top: 2px;
  border-top: 1px dashed rgba(34, 51, 92, 0.75);
  font-size: 0.88rem;
  line-height: 1.88;
  color: var(--muted);
}

/* ---------- iOS 图示 ---------- */
.page-faq .faq-ios-figure {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 18px;
  padding: 14px;
  border: 1px solid var(--rail);
  border-radius: var(--radius);
  background: rgba(13, 21, 48, 0.55);
}

.page-faq .faq-ios-figure img {
  display: block;
  width: 100%;
  max-width: 180px;
  height: auto;
  border: 1px solid var(--rail);
  border-radius: 8px;
}

.page-faq .faq-ios-figure figcaption {
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 560px) {
  .page-faq .faq-ios-figure {
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
  }

  .page-faq .faq-ios-figure img {
    flex: 0 0 auto;
    width: 132px;
    max-width: 132px;
  }
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--rail);
  border-radius: var(--radius);
  background:
    linear-gradient(150deg, rgba(122, 92, 255, 0.16), rgba(13, 21, 48, 0.92) 46%),
    var(--panel);
}

.page-faq .faq-support__intro {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-support__rows {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 20px;
}

@media (min-width: 620px) {
  .page-faq .faq-support__rows {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-support__row {
  padding-left: 12px;
  border-left: 2px solid var(--rail);
}

.page-faq .faq-support__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-support__value {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-scene,
  .page-faq .faq-item,
  .page-faq .faq-toc__link {
    transition: none;
  }

  .page-faq .faq-scene:hover,
  .page-faq .faq-scene:focus-visible {
    transform: none;
  }
}