.page-faq {
  background: var(--paper);
  color: var(--text);
  padding-bottom: 72px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-hi);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -45%;
  right: -12%;
  width: 62%;
  height: 190%;
  background: linear-gradient(155deg, rgba(23, 69, 59, 0.95), rgba(14, 42, 36, 0));
  border-left: 1px solid var(--line-dark);
  transform: skewX(-8deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 26px;
  padding-bottom: 40px;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(251, 248, 242, 0.6);
}

.page-faq .faq-crumbs a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  border-bottom-color: var(--gold);
}

.page-faq .faq-hero__grid {
  margin-top: 22px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-hero__main h1 {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 5.4vw, 3.15rem);
  line-height: 1.24;
  letter-spacing: 0.02em;
  color: var(--paper-hi);
  max-width: 15em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(251, 248, 242, 0.82);
}

.page-faq .faq-hero__note {
  margin-top: 26px;
  padding-left: 18px;
  border-left: 1px solid var(--line-dark);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(251, 248, 242, 0.7);
}

.page-faq .faq-hero__note p {
  margin: 0 0 6px;
}

.page-faq .faq-hero__note-t {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold-hi);
}

/* ---------- 三步条 ---------- */
.page-faq .faq-steps-band {
  background: var(--paper-hi);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 22px 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-steps__item {
  position: relative;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-steps__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  border-bottom: 0.5px solid var(--line);
  padding-bottom: 2px;
}

.page-faq .faq-steps__t {
  margin: 8px 0 4px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-steps__d {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 主体三栏 ---------- */
.page-faq .faq-body {
  padding-top: 32px;
  display: grid;
  gap: 28px;
}

/* 左侧分组 */
.page-faq .faq-nav {
  min-width: 0;
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-nav__item {
  flex: 0 0 auto;
}

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--text);
  text-decoration: none;
  background: var(--paper-hi);
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-nav__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  background: var(--ink);
  color: var(--paper-hi);
  border-color: var(--ink);
}

.page-faq .faq-nav__link:hover .faq-nav__no,
.page-faq .faq-nav__link:focus-visible .faq-nav__no {
  color: var(--gold-hi);
}

.page-faq .faq-nav__link:focus-visible {
  outline: 2px solid var(--gold-hi);
  outline-offset: 2px;
}

/* 工具条 */
.page-faq .faq-tools {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 26px;
}

.page-faq .faq-search {
  width: 100%;
  box-sizing: border-box;
  padding: 11px 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text);
  background: var(--paper-hi);
  border: 1px solid var(--line-soft);
  border-radius: 2px;
}

.page-faq .faq-search::placeholder {
  color: var(--slate);
}

.page-faq .faq-search:focus-visible {
  outline: 2px solid var(--gold-hi);
  outline-offset: 1px;
  border-color: var(--gold);
}

.page-faq .faq-tools__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--idbar-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 48px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-faq .faq-group__hint {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* 图版 */
.page-faq .faq-figure {
  margin: 20px 0 6px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  background: var(--ink);
}

.page-faq .faq-figure__cap {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-divider {
  margin: 44px 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-divider .faq-figure {
  margin-top: 0;
}

/* 手风琴 */
.page-faq .faq-item {
  position: relative;
  padding-left: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gold);
  opacity: 0;
  transition: opacity 200ms var(--ease);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) 1.1rem;
  align-items: baseline;
  gap: 10px;
  padding: 16px 0;
}

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

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

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-faq .faq-item__q {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color 160ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__q,
.page-faq .faq-item summary:hover .faq-item__q {
  color: var(--ink);
}

.page-faq .faq-item__code {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
  border-bottom: 0.5px solid var(--line);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 12px;
  height: 12px;
  align-self: center;
  justify-self: end;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--gold);
  transform: translateY(-50%);
}

.page-faq .faq-item__mark::after {
  transform: translateY(-50%) rotate(90deg);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-item__a {
  margin-left: calc(2.2rem + 10px);
  padding: 0 0 18px;
}

.page-faq .faq-item__a p {
  margin: 0 0 0.85em;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-faq .faq-item__a a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--crimson);
  border-bottom-color: var(--crimson);
}

.page-faq .faq-item__flag {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

/* 联系面板 */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: 24px 20px;
  background: var(--ink);
  color: var(--paper-hi);
}

.page-faq .faq-contact__title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--paper-hi);
}

.page-faq .faq-contact__lead {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(251, 248, 242, 0.72);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 16px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-contact__label {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-hi);
  word-break: break-word;
}

.page-faq .faq-contact__value a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-contact__value a:hover,
.page-faq .faq-contact__value a:focus-visible {
  border-bottom-color: var(--gold-hi);
}

.page-faq .faq-contact__foot {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(251, 248, 242, 0.6);
}

/* ---------- 右侧速查 ---------- */
.page-faq .faq-aside__title {
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-codes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-codes li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .faq-codes__no {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink);
  border-bottom: 0.5px solid var(--line);
  padding-bottom: 1px;
}

.page-faq .faq-codes__t {
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.page-faq .faq-aside__note {
  margin: 16px 0 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  border-left: 2px solid var(--gold);
  padding-left: 10px;
}

.page-faq .faq-aside__btn {
  display: inline-block;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-item summary {
    grid-template-columns: 2.4rem minmax(0, 1fr) auto 1.1rem;
    gap: 12px;
    padding: 18px 0;
  }

  .page-faq .faq-item__code {
    display: inline-block;
  }

  .page-faq .faq-item__q {
    font-size: 16px;
  }

  .page-faq .faq-item__a {
    margin-left: calc(2.4rem + 12px);
    padding-bottom: 20px;
  }

  .page-faq .faq-item__a p {
    font-size: 15px;
  }

  .page-faq .faq-contact {
    padding: 30px 28px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px 28px;
  }

  .page-faq .faq-tools {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }

  .page-faq .faq-search {
    max-width: 340px;
  }

  .page-faq .faq-tools__hint {
    text-align: right;
    flex: 0 0 auto;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }

  .page-faq .faq-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 250px;
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-hero__note {
    margin-top: 8px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    padding-top: 32px;
    padding-bottom: 56px;
  }

  .page-faq .faq-body {
    grid-template-columns: 172px minmax(0, 1fr) 216px;
    gap: 40px;
    padding-top: 52px;
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--idbar-h) + 24px);
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-top: 1px solid var(--line-soft);
  }

  .page-faq .faq-nav__item {
    flex: 0 0 auto;
  }

  .page-faq .faq-nav__link {
    display: flex;
    width: 100%;
    box-sizing: border-box;
    padding: 12px 12px;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    border-left-color: var(--gold);
    border-bottom-color: var(--ink);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--idbar-h) + 24px);
    padding-left: 20px;
    border-left: 1px solid var(--line-soft);
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 60px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-body {
    grid-template-columns: 190px minmax(0, 1fr) 240px;
    gap: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav__link,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item::before {
    transition: none;
  }
}