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

.page-faq {
  --faq-gap: clamp(32px, 5vw, 72px);
  --faq-sticky: 92px;
}

/* ---------- 页首题头 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 3vw, 34px) clamp(40px, 5.5vw, 76px);
  background: var(--frost);
  border-bottom: var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    116deg,
    transparent 0 38%,
    rgba(30, 92, 130, 0.10) 38% 51%,
    rgba(201, 144, 47, 0.14) 51% 55%,
    transparent 55% 100%
  );
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

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

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink-ice);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(14px, 1.15vw, 17px);
  line-height: 1.78;
  color: var(--brown-black);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: var(--line);
  background: var(--frost);
}

.page-faq .faq-hero__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--frost);
}

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

/* ---------- 两栏布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  padding-block: clamp(26px, 3.4vw, 40px) 0;
}

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

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

.page-faq .faq-index__link {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 2px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--brown-black);
  text-decoration: none;
  border-bottom: var(--line);
  transition: color 160ms ease, padding-left 160ms ease;
}

.page-faq .faq-index__link:hover {
  color: var(--ice-blue);
  padding-left: 8px;
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--ice-blue);
  font-weight: 700;
  padding-left: 8px;
  border-bottom-color: var(--ice-blue);
}

.page-faq .faq-index__num {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* ---------- 右侧正文 ---------- */
.page-faq .faq-body {
  min-width: 0;
  padding-block: clamp(28px, 3.6vw, 48px) clamp(48px, 6vw, 88px);
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky);
  padding-block: clamp(34px, 4.4vw, 58px);
  border-top: var(--line);
}

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

.page-faq .faq-group__head {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  padding: 16px 20px;
  background: var(--cream);
  border-left: 3px solid var(--gold);
}

.page-faq .faq-group__kicker {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.28;
  color: var(--ink-ice);
}

.page-faq .faq-group__note {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 区块配图 ---------- */
.page-faq .faq-group__figure {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  border: var(--line);
  background: var(--frost);
}

.page-faq .faq-group__media {
  aspect-ratio: 7 / 4;
  overflow: hidden;
  background: var(--frost);
}

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

.page-faq .faq-group__caption {
  padding: 10px 14px;
  border-top: var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  border-bottom: var(--line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--brown-black);
  transition: color 150ms ease;
}

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

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

.page-faq .faq-item__q::after {
  content: "\203A";
  flex: none;
  margin-left: auto;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--ice-blue);
  transition: transform 200ms ease;
}

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

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

.page-faq .faq-item[open] > .faq-item__q::after {
  transform: rotate(90deg);
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 2px 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--brown-black);
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

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

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] > .faq-item__a {
    animation: faq-reveal 200ms ease both;
  }
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 答案内的强调与步骤 ---------- */
.page-faq .hl {
  background: rgba(30, 92, 130, 0.12);
  color: var(--ice-blue);
  padding: 0 3px;
  font-weight: 600;
}

.page-faq .faq-steps {
  margin: 12px 0 14px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps > li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 30px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 区块尾部提示 ---------- */
.page-faq .faq-group__foot {
  margin: clamp(22px, 2.8vw, 32px) 0 0;
  padding: 15px 18px;
  background: var(--cream);
  border-top: 1px solid var(--crystal);
  border-bottom: 1px solid var(--crystal);
  font-size: 14px;
  line-height: 1.72;
  color: var(--brown-black);
}

.page-faq .faq-group__foot a {
  color: var(--ice-blue);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--ice-blue);
}

.page-faq .faq-group__foot a:hover {
  color: var(--ink-ice);
  border-bottom-color: var(--ink-ice);
}

/* ---------- 平板 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-index__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 7fr 5fr;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    column-gap: var(--faq-gap);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    padding-block: clamp(28px, 3.6vw, 48px);
    border-left: 1px solid var(--crystal);
    padding-left: 20px;
  }

  .page-faq .faq-index__list {
    display: block;
  }

  .page-faq .faq-body {
    padding-block: clamp(28px, 3.6vw, 48px) clamp(56px, 7vw, 96px);
  }

  .page-faq .faq-group__figure {
    max-width: 720px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-item__a {
    animation: none;
  }
}