/* ===== 帮助中心 / page-faq ===== */

.page-faq {
  display: block;
  padding-bottom: clamp(56px, 9vw, 104px);
}

/* ---- 首屏 ---- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
  padding-top: clamp(22px, 4vw, 48px);
}

.page-faq .faq-hero > * {
  min-width: 0;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 15em;
  font-size: clamp(28px, 5.2vw, 50px);
  line-height: 1.18;
  letter-spacing: -0.8px;
  font-weight: 700;
  color: var(--cream);
}

.page-faq .faq-lede {
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 37em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(247, 243, 234, 0.78);
}

.page-faq .faq-hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 10px 18px;
  border: 1px dashed var(--line);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--stone);
}

.page-faq .faq-hero-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: 0 30px 70px -44px rgba(34, 224, 206, 0.45);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-faq .faq-hero-media figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  margin: 0;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: rgba(11, 26, 21, 0.74);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cream);
}

/* ---- 主题胶囊条 ---- */
.page-faq .faq-topics {
  position: sticky;
  top: calc(var(--header-h) + 8px);
  z-index: 6;
  margin-top: clamp(30px, 5vw, 54px);
  padding: 8px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(20, 28, 25, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-faq .faq-topics ul {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-topics ul::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-topics a {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--cream);
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.page-faq .faq-topics a:hover,
.page-faq .faq-topics a:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  color: #141C19;
  outline: none;
}

/* ---- 分组 ---- */
.page-faq .faq-groups {
  margin-top: clamp(38px, 6vw, 68px);
}

.page-faq .faq-group {
  margin-top: clamp(40px, 7vw, 72px);
  scroll-margin-top: calc(var(--header-h) + 84px);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group-inner {
  display: block;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 2px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--orange);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.3;
  letter-spacing: -0.4px;
  font-weight: 600;
  color: var(--cream);
}

.page-faq .faq-group-head p {
  grid-column: 2;
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--stone);
}

/* ---- 手风琴 ---- */
.page-faq .faq-list {
  counter-reset: faq-q;
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(20, 28, 25, 0.72);
  overflow: hidden;
  transition: border-color 180ms ease, background 180ms ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 106, 24, 0.45);
}

.page-faq .faq-item[open] {
  background: var(--coal);
  border-color: rgba(34, 224, 206, 0.42);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 18px;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--cream);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary::before {
  counter-increment: faq-q;
  content: counter(faq-q, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.95;
  color: var(--stone);
  transition: color 180ms ease;
}

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

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

.page-faq .faq-mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  justify-self: end;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 1.5px;
  margin: -0.75px 0 0 -7px;
  background: var(--stone);
  transition: transform 200ms ease, background 200ms ease;
}

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

.page-faq .faq-item[open] .faq-mark::before {
  background: var(--orange);
}

.page-faq .faq-item[open] .faq-mark::after {
  background: var(--orange);
  transform: rotate(0deg);
}

.page-faq .faq-a {
  padding: 16px 16px 20px;
  background: var(--paper);
  color: var(--coal);
  border-top: 1px solid rgba(11, 26, 21, 0.12);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
}

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

.page-faq .faq-a a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--clay);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

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

/* ---- 区块配图 ---- */
.page-faq .faq-figure {
  margin: 18px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--coal);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--stone);
}

/* ---- 断点 ---- */
@media (min-width: 720px) {
  .page-faq .faq-a {
    padding: 18px 26px 22px calc(26px + 50px);
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.86fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-group--split .faq-group-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }

  .page-faq .faq-figure {
    margin-top: 0;
    position: sticky;
    top: calc(var(--header-h) + 76px);
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-item summary {
    padding: 17px 22px;
  }

  .page-faq .faq-a {
    padding: 20px 30px 24px calc(30px + 50px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-topics a,
  .page-faq .faq-item,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-item summary::before {
    transition: none;
  }
}