/* ============================================================
   帮助中心 · 页面专属样式（作用域：.page-faq）
   ============================================================ */

.page-faq {
  --faq-stick: calc(var(--bar-h) + 26px);
  --faq-measure: 66ch;
  position: relative;
  background: var(--void);
  color: var(--ink);
}

/* ---------- 首屏：检索与分类 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(38px, 5.6vw, 82px) 0 clamp(30px, 4.4vw, 58px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(880px 440px at 8% -12%, rgba(36, 26, 85, 0.9), transparent 68%),
    radial-gradient(620px 360px at 96% 112%, rgba(11, 46, 44, 0.72), transparent 70%),
    repeating-linear-gradient(180deg, rgba(53, 240, 220, 0.045) 0 1px, transparent 1px 6px);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

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

.page-faq .crumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.022em;
  font-weight: 900;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

/* 检索框 */

.page-faq .faq-search {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  margin-top: clamp(24px, 3vw, 36px);
  padding: 4px 6px 4px 20px;
  background: linear-gradient(100deg, rgba(36, 26, 85, 0.72), rgba(16, 26, 56, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .faq-search::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--cyan);
}

.page-faq .faq-search:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan), 0 10px 34px -18px rgba(53, 240, 220, 0.6);
}

.page-faq .faq-search__icon {
  position: relative;
  width: 15px;
  height: 15px;
  flex: none;
  border: 1.5px solid var(--cyan);
  border-radius: 50%;
}

.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -3px;
  width: 7px;
  height: 1.5px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-search__label {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-faq .faq-search__input {
  width: 100%;
  min-width: 0;
  padding: 15px 0;
  background: transparent;
  border: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.4;
}

.page-faq .faq-search__input::placeholder {
  color: var(--index);
}

.page-faq .faq-search__input:focus {
  outline: none;
}

.page-faq .faq-search__hint {
  flex: none;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
  padding-top: clamp(36px, 4.6vw, 68px);
  padding-bottom: clamp(64px, 8vw, 118px);
}

/* 左侧索引 */

.page-faq .faq-index {
  position: relative;
  padding-top: 16px;
  border-top: 2px solid var(--cyan);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--index);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index__list > li + li {
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 12px 13px 14px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.18s var(--ease), background 0.18s var(--ease),
    border-color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink);
  background: rgba(53, 240, 220, 0.06);
  padding-left: 18px;
  outline: none;
  box-shadow: inset 0 0 0 1px rgba(53, 240, 220, 0.28);
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(53, 240, 220, 0.1);
  padding-left: 18px;
}

.page-faq .faq-index__count {
  flex: none;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--index);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__count,
.page-faq .faq-index__link[aria-current="true"] .faq-index__count {
  color: var(--cyan);
  border-color: rgba(53, 240, 220, 0.45);
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--index);
}

/* 右侧问题区 */

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

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 5vw, 72px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.012em;
}

.page-faq .faq-group__count {
  font-size: 12px;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--muted);
}

.page-faq .faq-group__lede {
  grid-column: 1 / -1;
  margin: 2px 0 0;
  max-width: var(--faq-measure);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-group__lede a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 220, 0.4);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

/* 折叠条目 */

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background 0.22s var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(100deg, rgba(16, 26, 56, 0.62), rgba(16, 26, 56, 0) 78%);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.62;
  transition: color 0.18s var(--ease);
}

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

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}

.page-faq .faq-item__idx {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--index);
  transition: color 0.18s var(--ease);
}

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

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

.page-faq .faq-item__sign {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  flex: none;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease),
    background 0.18s var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__q:hover .faq-item__sign::before,
.page-faq .faq-item__q:hover .faq-item__sign::after {
  background: var(--orange);
}

.page-faq .faq-item__a {
  padding: 0 4px 24px 44px;
  max-width: var(--faq-measure);
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.86;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-answer-in 0.3s var(--ease) both;
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 220, 0.4);
}

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

/* 步骤型答案 */

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-steps > li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .faq-steps__no {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid rgba(53, 240, 220, 0.42);
  border-radius: var(--r);
  color: var(--cyan);
  font-size: 11px;
  line-height: 1;
}

/* 通勤战报插图 */

.page-faq .faq-commute__figure {
  margin: 22px 0 6px;
  border: 1px solid var(--line);
  background: var(--panel);
}

/* 兜底入口 */

.page-faq .faq-fallback {
  margin: clamp(38px, 4.4vw, 56px) 0 0;
  padding: 22px 24px;
  max-width: var(--faq-measure);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--r);
  background: linear-gradient(100deg, rgba(255, 138, 60, 0.1), rgba(255, 138, 60, 0) 66%);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-fallback__link {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 60, 0.55);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-fallback__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (max-width: 560px) {
  .page-faq .faq-search {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 6px;
    padding: 6px 14px 6px 16px;
  }

  .page-faq .faq-search__hint {
    grid-column: 2;
    justify-self: start;
    padding: 0 0 8px;
    border: 0;
    font-size: 11.5px;
  }

  .page-faq .faq-search__input {
    padding: 12px 0 4px;
  }

  .page-faq .faq-item__q {
    grid-template-columns: 24px minmax(0, 1fr) 18px;
    gap: 10px;
    padding: 18px 2px;
    font-size: 15.5px;
  }

  .page-faq .faq-item__a {
    padding: 0 2px 22px 34px;
    font-size: 15px;
  }

  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .faq-group__count {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-faq .faq-hero__figure {
    align-self: stretch;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 246px minmax(0, 1fr);
    gap: clamp(44px, 5vw, 84px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-stick);
  }
}

@media (min-width: 1320px) {
  .page-faq .faq-hero__title {
    font-size: clamp(64px, 5.4vw, 84px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-index__link,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}