/* ============================================================
   帮助中心 / page-faq
   ============================================================ */

.page-faq {
  --faq-cut: 18px;
  --faq-cut-sm: 12px;
  display: block;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4.6vw, 60px) 0 clamp(22px, 3.2vw, 40px);
  background-image:
    radial-gradient(56% 60% at 10% 0%, rgba(242, 196, 107, 0.13), transparent 68%),
    radial-gradient(44% 50% at 90% 6%, rgba(79, 227, 208, 0.09), transparent 70%);
  background-repeat: no-repeat;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 2.4vw, 28px);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-hero .breadcrumb a:hover,
.page-faq .faq-hero .breadcrumb a:focus-visible {
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(29px, 6.2vw, 58px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--text);
}

.page-faq .faq-hero__accent {
  display: block;
  color: var(--gold);
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  font-size: clamp(15px, 1.55vw, 17.5px);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text);
  background: rgba(20, 26, 69, 0.78);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
}

.page-faq .faq-hero__num {
  color: var(--gold);
  font-size: 14px;
  letter-spacing: 0.02em;
}

/* ---------- 检索 ---------- */
.page-faq .faq-search {
  padding: clamp(6px, 1.4vw, 14px) 0 clamp(30px, 4.6vw, 56px);
}

.page-faq .faq-search__panel {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  background:
    linear-gradient(158deg, rgba(20, 26, 69, 0.96), rgba(11, 16, 48, 0.72)),
    var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(
    var(--faq-cut) 0,
    100% 0,
    100% calc(100% - var(--faq-cut)),
    calc(100% - var(--faq-cut)) 100%,
    0 100%,
    0 var(--faq-cut)
  );
}

.page-faq .faq-search__panel::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--cyan), transparent 78%);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-search__title {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 800;
  color: var(--text);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(11, 16, 48, 0.86);
  border: 1px solid var(--line);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-wash);
}

.page-faq .faq-search__glyph {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  border: 1.6px solid var(--cyan);
  border-radius: 50%;
}

.page-faq .faq-search__glyph::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -4px;
  width: 8px;
  height: 1.6px;
  background: var(--cyan);
  transform: rotate(45deg);
  transform-origin: left center;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0;
  background: none;
  border: 0;
  outline: none;
  color: var(--text);
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.6;
}

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

.page-faq .faq-search__hint {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-search__terms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-search__terms a {
  display: inline-block;
  padding: 6px 13px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--cyan);
  text-decoration: none;
  background: var(--cyan-wash);
  border: 1px solid rgba(79, 227, 208, 0.28);
  border-radius: 999px;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.page-faq .faq-search__terms a:hover,
.page-faq .faq-search__terms a:focus-visible {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 章节头 ---------- */
.page-faq .section-head {
  display: grid;
  gap: 6px;
  margin-bottom: clamp(16px, 2.4vw, 28px);
}

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

.page-faq .section-head__title {
  margin: 0;
  font-size: clamp(21px, 3.1vw, 32px);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text);
}

.page-faq .section-head__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 分类卡 ---------- */
.page-faq .faq-cats {
  padding: clamp(10px, 2vw, 22px) 0 clamp(30px, 4.6vw, 56px);
}

.page-faq .faq-cats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cat {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 44px 22px 20px;
  text-decoration: none;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
  transition: border-color var(--t-mid) var(--ease), background var(--t-mid) var(--ease),
    transform var(--t-mid) var(--ease);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  border-color: var(--gold);
  background: linear-gradient(150deg, rgba(242, 196, 107, 0.1), var(--ink-800) 62%);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .faq-cat:focus-visible {
  box-shadow: inset 0 0 0 2px var(--gold);
}

.page-faq .faq-cat__no {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-cat__name {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
}

.page-faq .faq-cat__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-cat__arrow {
  position: absolute;
  top: 20px;
  right: 18px;
  font-size: 16px;
  color: var(--cyan);
  transition: transform var(--t-mid) var(--ease);
}

.page-faq .faq-cat:hover .faq-cat__arrow,
.page-faq .faq-cat:focus-visible .faq-cat__arrow {
  transform: translateX(4px);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(30px, 4.6vw, 56px);
  border: 1px solid var(--line-soft);
  background: var(--ink-800);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 14px 20px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

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

.page-faq .faq-sticky {
  display: grid;
  gap: 18px;
}

/* ---------- 条目分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(20px, 2.6vw, 28px);
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 90px;
}

.page-faq .faq-group:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 4px;
}

.page-faq .faq-group__no {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(18px, 2.3vw, 23px);
  font-weight: 800;
  color: var(--text);
}

/* ---------- 折叠条目 ---------- */
.page-faq .fold {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .fold__btn {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 4px 16px 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  font-family: var(--f-sans);
  font-size: 15.5px;
  line-height: 1.7;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .fold__btn:hover {
  color: var(--gold-hi);
}

.page-faq .fold__btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--gold);
}

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

.page-faq .fold__sign {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--line);
  transition: border-color var(--t-fast) var(--ease);
}

.page-faq .fold__btn:hover .fold__sign {
  border-color: var(--gold);
}

.page-faq .fold__sign::before,
.page-faq .fold__sign::after {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1.5px;
  margin-top: -0.75px;
  background: var(--cyan);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-fast) var(--ease);
}

.page-faq .fold__sign::after {
  transform: rotate(90deg);
}

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

.page-faq .fold[data-open] .fold__sign::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .fold__panel {
  max-height: 900px;
  opacity: 1;
  padding: 0 4px 22px 20px;
  margin-left: 6px;
  border-left: 1px solid var(--line);
  overflow: hidden;
  transition: max-height var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease),
    padding-bottom var(--t-mid) var(--ease);
}

.page-faq .fold:not([data-open]) .fold__panel {
  max-height: 0;
  opacity: 0;
  padding-bottom: 0;
}

.page-faq .fold__answer {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .fold__steps {
  counter-reset: faqstep;
  display: grid;
  gap: 9px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .fold__steps li {
  position: relative;
  padding-left: 32px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .fold__steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 同步状态条 ---------- */
.page-faq .faq-sync {
  padding: clamp(18px, 2.4vw, 24px);
  background: linear-gradient(165deg, rgba(20, 26, 69, 0.95), rgba(11, 16, 48, 0.72));
  border: 1px solid var(--line);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
}

.page-faq .faq-sync__state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--green);
  background: rgba(42, 227, 139, 0.1);
  border: 1px solid rgba(42, 227, 139, 0.32);
  border-radius: 999px;
}

.page-faq .faq-sync__title {
  margin: 16px 0 0;
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-sync__text {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-sync__meta {
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-sync__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-sync__row dt {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-sync__row dd {
  margin: 0;
  font-size: 13.5px;
  color: var(--gold);
  text-align: right;
}

.page-faq .faq-sync__figure {
  margin: 18px 0 0;
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

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

.page-faq .faq-sync__figure figcaption {
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 仍未解决 ---------- */
.page-faq .faq-unresolved {
  padding: clamp(18px, 2.4vw, 24px);
  background: rgba(20, 26, 69, 0.55);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
}

.page-faq .faq-unresolved__title {
  margin: 0;
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-unresolved__text {
  margin: 10px 0 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-unresolved__contact {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--gold);
  word-break: break-all;
}

.page-faq .faq-unresolved__links {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-unresolved__links a {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cyan);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-unresolved__links a:hover,
.page-faq .faq-unresolved__links a:focus-visible {
  color: var(--gold);
  text-decoration: underline;
}

/* ---------- 响应式 ---------- */
@media (min-width: 680px) {
  .page-faq .faq-cats__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 3.6vw, 56px);
  }

  .page-faq .faq-sticky {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-cats__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-cat__arrow,
  .page-faq .fold__sign,
  .page-faq .fold__sign::before,
  .page-faq .fold__sign::after,
  .page-faq .fold__panel {
    transition-duration: 1ms;
  }

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