.page-faq {
  background: linear-gradient(180deg, var(--ink-950) 0%, var(--ink-950) 68%, #04101d 100%);
  color: var(--text-body);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(28px, 5vw, 72px) clamp(26px, 4vw, 56px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

.page-faq .faq-hero__lede {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  min-width: 0;
}

.page-faq h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 4.6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.35vw, 17px);
  line-height: 1.75;
  color: var(--text-body);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 4px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line-cool);
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-hero__figure .media__img {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__figure {
    border-right: 3px solid var(--orange);
    transform: translateY(clamp(0px, 2vw, 22px));
  }
}

/* ---------- 索引 + 答案双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
  padding-top: clamp(24px, 4vw, 44px);
  border-top: 1px solid var(--line-cool);
  scroll-margin-top: 96px;
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 286px) minmax(0, 1fr);
    align-items: start;
  }
}

.page-faq .faq-index {
  border: 1px solid var(--line-cool);
  background: var(--ink-900);
  padding: 16px 14px 16px;
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    position: sticky;
    top: 92px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    scrollbar-width: thin;
  }
}

.page-faq .faq-index__head {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

@media (min-width: 1024px) {
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    padding-bottom: 0;
    overflow-x: visible;
  }

  .page-faq .faq-index__item {
    flex: 1 1 auto;
  }
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-height: 44px;
  padding: 10px 10px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-body);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(53, 242, 208, 0.08);
  color: var(--text-strong);
  border-left-color: var(--orange);
}

.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--orange);
}

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

@media (max-width: 1023px) {
  .page-faq .faq-index__link {
    white-space: nowrap;
    border-left: 0;
    border-bottom: 3px solid transparent;
    background: rgba(126, 147, 168, 0.09);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-bottom-color: var(--orange);
  }
}

/* ---------- 答案区 ---------- */
.page-faq .faq-answers {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 92px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 4px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line-cyan);
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 900;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.1vw, 25px);
  letter-spacing: 0.01em;
  color: var(--text-strong);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-quiet);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-cool);
  scroll-margin-top: 96px;
}

.page-faq .faq-item:target {
  background: rgba(53, 242, 208, 0.06);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  min-height: 44px;
  padding: 18px 10px 18px 4px;
  list-style: none;
  cursor: pointer;
  font-size: clamp(16px, 1.3vw, 17.5px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--text-strong);
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

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

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

.page-faq .faq-item > summary:hover {
  background: rgba(53, 242, 208, 0.07);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  background: rgba(53, 242, 208, 0.07);
}

.page-faq .faq-item__code {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .faq-item[open] .faq-item__code {
  color: var(--orange);
}

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

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(-135deg);
}

.page-faq .faq-item__answer {
  margin: 0 0 18px;
  padding: 16px 18px 18px;
  max-width: 74ch;
  background: var(--paper);
  color: var(--press);
  border-left: 3px solid var(--orange);
  font-size: 17px;
  line-height: 1.75;
}

@media (min-width: 640px) {
  .page-faq .faq-item__answer {
    margin-left: 32px;
  }
}

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

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

.page-faq .faq-item__answer a {
  color: var(--grass-900);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

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

.page-faq .faq-item[open] .faq-item__answer {
  animation: faqAnswerIn 180ms var(--ease) both;
}

/* ---------- 联系条 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 14px;
  margin-top: 6px;
  padding: 18px;
  border: 1px solid var(--line-cyan);
  background: linear-gradient(135deg, var(--ink-900) 0%, var(--ink-850) 100%);
}

@media (min-width: 640px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

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

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-contact__val {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-strong);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cool);
  word-break: break-all;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-contact__val:hover,
.page-faq .faq-contact__val:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-contact__note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-cool);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-quiet);
}

/* ---------- 收尾图 ---------- */
.page-faq .faq-closing {
  margin: clamp(40px, 6vw, 76px) 0 0;
}

.page-faq .faq-closing__media {
  border-top: 1px solid var(--line-cool);
  border-bottom: 1px solid var(--line-cool);
  overflow: hidden;
  background: var(--ink-900);
}

.page-faq .faq-closing__media .media__img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-closing__caption {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-quiet);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__answer {
    animation: none;
  }

  .page-faq .faq-item__mark {
    transition: none;
  }
}