/* ============ 银河主页 · 帮助中心 ============ */
.page-faq {
  --faq-rail-w: 216px;
  color: var(--warm);
}

.page-faq .breadcrumbs {
  margin: 28px 0 4px;
}

/* ---------- 首屏：检索 + 分类示意 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 3vw, 44px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-faq h1 {
  font-family: var(--font-head);
  font-size: clamp(34px, 5.4vw, 58px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 14px 0 16px;
}

.page-faq .faq-hero__lede {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--mist);
  margin: 0;
}

.page-faq .faq-search {
  margin: 34px 0 22px;
  padding-left: 18px;
  border-left: 2px solid var(--purple);
}

.page-faq .faq-search__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--purple-soft);
  margin-bottom: 10px;
}

.page-faq .faq-search__input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--warm);
  background: var(--deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: #6B7694;
}

.page-faq .faq-search__input:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(122, 92, 255, 0.22), 0 0 26px rgba(122, 92, 255, 0.18);
}

.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.6;
}

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

.page-faq .faq-chip {
  display: inline-block;
  padding: 7px 14px;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

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

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

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

.page-faq .media-frame {
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .media-frame__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 三类场景 ---------- */
.page-faq .faq-paths__row {
  display: grid;
  gap: 20px;
  margin-top: 36px;
}

.page-faq .faq-path {
  position: relative;
  padding: 26px 24px 24px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-path::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--grad);
  opacity: 0.75;
}

.page-faq .faq-path__dot {
  width: 8px;
  height: 8px;
  margin: 0 0 14px;
  border-radius: 50%;
}

.page-faq .faq-path--first .faq-path__dot {
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(53, 214, 200, 0.65);
}

.page-faq .faq-path--return .faq-path__dot {
  background: var(--gold);
  box-shadow: 0 0 12px rgba(227, 195, 107, 0.65);
}

.page-faq .faq-path--switch .faq-path__dot {
  background: var(--purple-soft);
  box-shadow: 0 0 12px rgba(169, 155, 255, 0.65);
}

.page-faq .faq-path h3 {
  margin: 12px 0 10px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-faq .faq-path__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-steps,
.page-faq .faq-plain {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li,
.page-faq .faq-plain li {
  padding: 9px 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

.page-faq .faq-steps li {
  display: flex;
  gap: 12px;
}

.page-faq .faq-steps .mono {
  color: var(--gold);
  flex: 0 0 auto;
}

.page-faq .faq-path__link {
  display: inline-block;
  font-size: 14px;
  color: var(--purple-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-path__link::after {
  content: " →";
  color: var(--cyan);
}

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

.page-faq .faq-map {
  margin: 40px 0 0;
}

/* ---------- 问答区：导轨 + 折叠列表 ---------- */
.page-faq .faq-board {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-rail ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail a {
  display: block;
  padding: 11px 0;
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
  border-top: 1px solid var(--line);
  transition: color 200ms var(--ease), padding-left 200ms var(--ease);
}

.page-faq .faq-rail a:hover,
.page-faq .faq-rail a:focus-visible {
  color: var(--cyan);
  padding-left: 6px;
}

.page-faq .faq-group {
  margin-bottom: 40px;
  scroll-margin-top: 120px;
}

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

.page-faq .faq-group__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--purple-soft);
}

.page-faq .fold {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  scroll-margin-top: 120px;
  transition: border-color 200ms var(--ease);
}

.page-faq .fold:hover {
  border-color: #3A4770;
}

.page-faq .fold > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--warm);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--purple-soft);
  transition: color 200ms var(--ease);
}

.page-faq .fold[open] > summary::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .fold[open] {
  border-color: var(--purple);
}

.page-faq .faq-qnum {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-faq .fold-body {
  padding: 0 18px 18px 18px;
  border-top: 1px solid var(--line);
  animation: faq-fold-open 240ms var(--ease);
}

.page-faq .fold-body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

@keyframes faq-fold-open {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-support h2 {
  margin: 12px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-faq .faq-support__text {
  max-width: 32em;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-contact {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

.page-faq .faq-contact__key {
  flex: 0 0 88px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  align-self: center;
}

.page-faq .faq-contact__val {
  color: var(--warm);
  word-break: break-word;
}

.page-faq .faq-support__more {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-support__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 200, 0.4);
}

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

.page-faq .faq-mail {
  padding: 24px;
  background: var(--deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-mail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-mail__tpl {
  margin: 0 0 14px;
  padding: 16px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--warm);
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--ink);
  border-left: 2px solid var(--purple);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-mono);
}

.page-faq .faq-mail__note {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-paths__row {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-path--first {
    grid-column: span 2;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 64px;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-paths__row {
    grid-template-columns: 1.25fr 1fr 1fr;
  }

  .page-faq .faq-path--first {
    grid-column: auto;
  }

  .page-faq .faq-board {
    grid-template-columns: var(--faq-rail-w) 1fr;
    gap: 48px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 128px;
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search__input,
  .page-faq .faq-chip,
  .page-faq .faq-path__link,
  .page-faq .faq-rail a,
  .page-faq .fold {
    transition: none;
  }

  .page-faq .fold-body {
    animation: none;
  }
}