/* ===== 帮助中心 /faq/ ===== */
.page-faq {
  --faq-hair: 1px solid var(--line);
  --faq-gap: clamp(20px, 3vw, 32px);
}

/* --- 面包屑 --- */
.page-faq .faq-crumbs {
  margin-bottom: clamp(18px, 3vw, 32px);
}

/* --- 首屏拼贴 --- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 5vw, 48px);
  padding-bottom: clamp(8px, 2vw, 20px);
}

.page-faq .faq-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__lead {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 14px 0 18px;
}

.page-faq .faq-hero__intro {
  max-width: 40ch;
  margin: 0 0 26px;
  font-size: clamp(16px, 1.6vw, 17.5px);
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  list-style: none;
  margin: 0;
  padding: 18px 0 0;
  border-top: var(--faq-hair);
}

.page-faq .faq-stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-stats__num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-stats__label {
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__fig {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: var(--faq-hair);
  border-radius: var(--r-lg);
  background: var(--navy-2);
}

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

.page-faq .faq-hero__fig .media__cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: linear-gradient(to top, rgba(8, 11, 17, 0.9), rgba(8, 11, 17, 0));
}

/* --- 索引 + 问答主体 --- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 46px);
  padding-top: clamp(36px, 6vw, 68px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-faq .faq-index {
  align-self: start;
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  color: var(--mist);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.35;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  background: var(--navy-2);
  border-color: var(--line);
  transform: translateX(3px);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
  padding: 2px 8px;
  border: var(--faq-hair);
  border-radius: var(--r-pill);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__count,
.page-faq .faq-index__link:focus-visible .faq-index__count {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-index__more {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
}

/* --- 问答分组 --- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(40px, 6vw, 64px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--hdr-h) + 28px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: var(--faq-hair);
}

.page-faq .faq-group__no {
  grid-column: 1;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
  padding-top: 18px;
}

/* --- 手风琴条目 --- */
.page-faq .faq-item {
  border: var(--faq-hair);
  border-left: 3px solid transparent;
  border-radius: var(--r-md);
  background: var(--navy-2);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--line);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(47, 227, 232, 0.14);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--cyan);
}

.page-faq .faq-item__text {
  min-width: 0;
}

.page-faq .faq-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: var(--faq-hair);
  border-radius: var(--r-pill);
  color: var(--cyan);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .faq-item__q:hover .faq-item__icon {
  border-color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
  border-color: var(--cyan);
  background: rgba(47, 227, 232, 0.12);
}

.page-faq .faq-item__a {
  padding: 0 16px 18px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist);
}

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

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

/* --- 组内示意图 --- */
.page-faq .faq-fig {
  position: relative;
  margin: 18px 0 0;
  overflow: hidden;
  border: var(--faq-hair);
  border-radius: var(--r-lg);
  background: var(--navy-2);
}

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

.page-faq .faq-fig .media__cap {
  position: static;
  inset: auto;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
  border-top: var(--faq-hair);
  background: none;
}

/* --- 底部求助面板 --- */
.page-faq .faq-help {
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-faq .faq-help__panel {
  display: grid;
  gap: 16px;
  padding: clamp(26px, 4vw, 52px);
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--navy);
}

.page-faq .faq-help__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-help h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.page-faq .faq-help p {
  margin: 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--navy);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.page-faq .faq-help__actions .btn--ghost {
  border-color: var(--navy);
  color: var(--navy);
}

.page-faq .faq-help__actions .btn--ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* --- 断点 --- */
@media (min-width: 700px) {
  .page-faq .faq-item__q {
    padding: 17px 22px;
    gap: 14px;
  }

  .page-faq .faq-item__a {
    padding: 0 22px 22px 52px;
    font-size: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-hero__fig {
    aspect-ratio: 2 / 1;
    margin-top: clamp(24px, 3vw, 48px);
  }
}

@media (min-width: 1081px) {
  .page-faq .faq-shell {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--hdr-h) + 28px);
  }
}

@media (max-width: 420px) {
  .page-faq .faq-item__q {
    grid-template-columns: minmax(0, 1fr) auto;
  }

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

  .page-faq .faq-stats {
    gap: 10px 20px;
  }

  .page-faq .faq-stats__num {
    font-size: 20px;
  }
}