.page-faq {
  --faq-accent: var(--amber);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4vw, 52px) 0 clamp(40px, 5.4vw, 80px);
  background-color: var(--ink);
  background-image:
    linear-gradient(180deg, var(--ink-3) 0%, var(--ink) 78%),
    repeating-linear-gradient(90deg, rgba(185, 196, 212, .05) 0 1px, transparent 1px 72px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(217, 154, 43, .18) 0%, rgba(217, 154, 43, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
  margin-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero__text h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 15ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.82;
  color: var(--gray);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 16px;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__facts b {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1;
  color: var(--amber);
  letter-spacing: -.01em;
}

.page-faq .faq-hero__facts span {
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--gray);
  line-height: 1.5;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 16px -16px -16px 16px;
  border: 1px solid rgba(217, 154, 43, .55);
  pointer-events: none;
}

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

/* ---------- 快速跳转 ---------- */
.page-faq .faq-jump {
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border: 1px solid var(--line-2);
  font-size: 13px;
  line-height: 1.2;
  color: var(--gray);
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms var(--ease), border-color 180ms var(--ease),
    background-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .faq-jump__link::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--amber);
  flex: none;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--paper);
  border-color: var(--amber);
  background: rgba(217, 154, 43, .1);
  transform: translateY(-1px);
}

.page-faq .faq-jump__link--bj::before { background: var(--bj); }
.page-faq .faq-jump__link--sz::before { background: var(--sz); }
.page-faq .faq-jump__link--sh::before { background: var(--sh); }
.page-faq .faq-jump__link--hz::before { background: var(--hz); }

.page-faq .faq-jump__link--bj:hover,
.page-faq .faq-jump__link--bj:focus-visible { border-color: var(--bj); background: rgba(46, 139, 139, .12); }
.page-faq .faq-jump__link--sz:hover,
.page-faq .faq-jump__link--sz:focus-visible { border-color: var(--sz); background: rgba(201, 162, 39, .12); }
.page-faq .faq-jump__link--sh:hover,
.page-faq .faq-jump__link--sh:focus-visible { border-color: var(--sh); background: rgba(224, 122, 63, .12); }
.page-faq .faq-jump__link--hz:hover,
.page-faq .faq-jump__link--hz:focus-visible { border-color: var(--hz); background: rgba(122, 90, 166, .14); }

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  background: var(--ink);
  padding: clamp(36px, 4.6vw, 72px) 0 clamp(52px, 6.4vw, 96px);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 3.2vw, 48px);
  align-items: start;
}

/* ---------- 左侧目录 ---------- */
.page-faq .faq-aside {
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: 20px 18px;
}

.page-faq .faq-aside__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-index__head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-faq .faq-index__sub {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-index__sub a {
  display: block;
  margin-left: -1px;
  padding: 4px 0 4px 11px;
  border-left: 2px solid transparent;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--gray);
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-index__sub a:hover,
.page-faq .faq-index__sub a:focus-visible {
  color: var(--amber);
  border-left-color: var(--amber);
}

.page-faq .faq-aside__more {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.page-faq .faq-aside__more a {
  font-size: 13px;
  color: var(--gray);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-faq .faq-aside__more a:hover,
.page-faq .faq-aside__more a:focus-visible {
  color: var(--amber);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--rail-h) + var(--bar-h) + 16px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 4.6vw, 62px);
}

.page-faq .faq-group--region { --faq-accent: var(--amber); }
.page-faq .faq-group--response { --faq-accent: var(--signal); }
.page-faq .faq-group--stock { --faq-accent: var(--hz); }
.page-faq .faq-group--order { --faq-accent: var(--sz); }
.page-faq .faq-group--connect { --faq-accent: var(--bj); }

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--faq-accent);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  scroll-margin-top: calc(var(--rail-h) + var(--bar-h) + 16px);
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  background: var(--ink-2);
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease),
    box-shadow 200ms var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-2);
  border-left-color: var(--faq-accent);
}

.page-faq .faq-item[open] {
  background: var(--ink-3);
  border-left-color: var(--faq-accent);
  box-shadow: 5px 5px 0 rgba(217, 154, 43, .12);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px clamp(16px, 2.4vw, 22px);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.55;
  color: var(--paper);
}

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

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

.page-faq .faq-item__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--faq-accent);
}

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

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-left: auto;
  margin-top: 4px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--faq-accent);
}

.page-faq .faq-item__icon::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__icon::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 clamp(16px, 2.4vw, 22px) 18px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--gray);
  animation: faq-reveal 220ms var(--ease);
}

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

.page-faq .faq-item__a p + p {
  margin-top: 9px;
}

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

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
}

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

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  margin-top: 26px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-2);
  border-top: 3px solid var(--signal);
  background: var(--ink-2);
  display: grid;
  gap: 16px;
}

.page-faq .faq-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 520px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 640px) {
  .page-faq .faq-item__a {
    padding-left: 60px;
    padding-right: 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(216px, 272px) minmax(0, 1fr);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--rail-h) + var(--bar-h) + 18px);
    max-height: calc(100vh - var(--rail-h) - var(--bar-h) - 36px);
    overflow-y: auto;
    scrollbar-width: thin;
  }

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

@media (max-width: 999px) {
  .page-faq .faq-index__sub {
    display: none;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-index {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-hero__figure::after {
    inset: 10px -10px -10px 10px;
  }
}

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

  .page-faq .faq-jump__link,
  .page-faq .faq-item,
  .page-faq .faq-item__icon::after {
    transition: none;
  }

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