.page-faq {
  background: var(--paper);
  color: var(--ink);
}

/* ===== 首屏深色区 ===== */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--night);
  color: var(--paper);
}

.page-faq .faq-hero__art {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 0 66%, rgba(230, 57, 70, .16) 66% 66.6%, transparent 66.6% 100%);
}

.page-faq .faq-hero__inner,
.page-faq .faq-hero__visual {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero__inner {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 52px;
}

.page-faq .faq-hero__content {
  max-width: 780px;
}

.page-faq .faq-hero__content .eyebrow {
  margin-bottom: 18px;
}

.page-faq .faq-hero__intro {
  max-width: 640px;
  margin-bottom: 30px;
}

.page-faq .faq-hero__flash {
  display: inline-block;
  background: var(--green);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  padding: 2px 8px;
  letter-spacing: .05em;
  transform: rotate(-2deg);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-faq .faq-hero__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-display);
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-hero__cta--primary {
  background: var(--red);
  color: var(--paper);
}

.page-faq .faq-hero__cta--primary:hover {
  background: var(--paper);
  color: var(--red);
  border-color: var(--red);
}

.page-faq .faq-hero__cta--ghost {
  border-color: rgba(245, 240, 230, .6);
  color: var(--paper);
}

.page-faq .faq-hero__cta--ghost:hover {
  background: rgba(245, 240, 230, .12);
  border-color: var(--paper);
}

.page-faq .faq-hero__visual {
  padding-bottom: 56px;
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: polygon(0 3%, 100% 0%, 100% 100%, 0 97%);
  box-shadow: 0 24px 50px rgba(0, 0, 0, .28);
}

/* ===== 面包屑 ===== */
.page-faq .faq-breadcrumbs {
  padding-top: 32px;
  padding-bottom: 8px;
}

/* ===== 问答手册布局 ===== */
.page-faq .faq-manual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-top: 24px;
  padding-bottom: 80px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

@media (min-width: 992px) {
  .page-faq .faq-manual {
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 72px;
    padding-top: 48px;
    padding-bottom: 120px;
  }
}

/* ===== 左侧索引 ===== */
.page-faq .faq-index {
  border: 1px solid var(--sand);
  padding: 26px 22px;
  background: rgba(255, 255, 255, .25);
  box-shadow: var(--shadow-soft);
}

@media (min-width: 992px) {
  .page-faq .faq-manual__aside {
    position: sticky;
    top: calc(var(--header-height) + 32px);
    align-self: start;
  }
}

.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 12px;
  margin: 0 0 20px;
}

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

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

.page-faq .faq-index__group-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--sand);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--red);
  line-height: 1;
}

.page-faq .faq-index__title {
  font-family: var(--font-display);
  font-size: 17px;
  flex: 1;
  transition: color .2s var(--ease);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--paper);
  background: var(--ink);
  padding: 2px 8px;
}

.page-faq .faq-index__group-link:hover .faq-index__title {
  color: var(--red);
}

.page-faq .faq-index__sublist {
  list-style: none;
  margin: 10px 0 0;
  padding: 0 0 0 34px;
}

.page-faq .faq-index__sublist li {
  margin: 0;
}

.page-faq .faq-index__sublist a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0 7px 10px;
  border-left: 2px solid transparent;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), padding-left .2s var(--ease);
}

.page-faq .faq-index__subno {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blue);
}

.page-faq .faq-index__sublist a:hover {
  border-left-color: var(--red);
  color: var(--red);
  padding-left: 14px;
}

.page-faq .faq-index__extra {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--sand);
}

.page-faq .faq-index__extra p {
  margin: 0 0 8px;
  font-size: 14px;
  color: rgba(31, 27, 22, .6);
}

.page-faq .faq-index__more {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--red);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color .2s var(--ease);
}

.page-faq .faq-index__more:hover {
  border-bottom-color: var(--red);
}

/* ===== 右侧答案区 ===== */
.page-faq .faq-manual__main {
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.page-faq .faq-section + .faq-section {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--sand);
}

@media (min-width: 760px) {
  .page-faq .faq-section + .faq-section {
    margin-top: 80px;
    padding-top: 64px;
  }
}

.page-faq .faq-section__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 3px solid var(--ink);
}

.page-faq .faq-section__no {
  font-family: var(--font-mono);
  font-size: clamp(44px, 6vw, 72px);
  line-height: .85;
  color: var(--red);
  letter-spacing: -.04em;
}

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

.page-faq .faq-section__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.2;
}

.page-faq .faq-section__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(31, 27, 22, .62);
}

/* ===== 问答折叠项 ===== */
.page-faq .faq-item {
  margin: 0 0 12px;
  border: 1px solid var(--sand);
  background: var(--paper);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.page-faq .faq-item[open] {
  border-color: var(--sand);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-item:target {
  outline: 2px solid var(--red);
  outline-offset: 4px;
}

.page-faq .faq-item__summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  user-select: none;
}

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

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--paper);
  background: var(--red);
  padding: 2px 8px;
  line-height: 1.5;
  flex-shrink: 0;
}

.page-faq .faq-item__question {
  flex: 1;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
  transition: color .2s var(--ease);
}

.page-faq .faq-item__icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  transition: transform .3s var(--ease), background .25s var(--ease);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
  background: var(--red);
}

.page-faq .faq-item__summary:hover .faq-item__question {
  color: var(--red);
}

.page-faq .faq-item__answer {
  border-top: 1px solid var(--sand);
  padding: 18px 18px 20px;
  background: rgba(209, 201, 186, .14);
}

.page-faq .faq-item__answer p {
  position: relative;
  margin: 0;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(31, 27, 22, .84);
}

.page-faq .faq-item__answer p::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 8px;
  background: var(--red);
}

.page-faq .faq-item__summary:focus-visible,
.page-faq .faq-index a:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

/* ===== 联系支持备忘卡 ===== */
.page-faq .faq-memo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 36px;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-faq .faq-memo {
    grid-template-columns: 1.1fr .9fr;
  }
}

.page-faq .faq-memo__body {
  padding: 28px 24px;
}

@media (min-width: 760px) {
  .page-faq .faq-memo__body {
    padding: 36px 32px;
  }
}

.page-faq .faq-memo__label {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .faq-memo__list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 15px;
  line-height: 1.9;
}

.page-faq .faq-memo__list li {
  position: relative;
  padding-left: 18px;
}

.page-faq .faq-memo__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 6px;
  height: 6px;
  background: var(--red);
}

.page-faq .faq-memo__media {
  position: relative;
  min-height: 240px;
  background: var(--sand);
}

.page-faq .faq-memo__img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}