.page-faq {
  --faq-idx: 64px;
  --faq-q: 300px;
  --faq-gap: 36px;
  --faq-body: #C9D8D3;
  position: relative;
  color: var(--paper);
}

.page-faq::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--cyan) 0%,
    var(--cyan) 32%,
    var(--orange) 32%,
    var(--orange) 46%,
    var(--line) 46%,
    var(--line) 100%
  );
}

.page-faq :focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--mute);
}

.page-faq .crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-faq .crumbs li + li::before {
  content: "/";
  color: var(--line);
}

.page-faq .crumbs a {
  color: var(--mute);
  text-decoration: none;
  transition: color .2s ease;
}

.page-faq .crumbs a:hover {
  color: var(--cyan);
}

.page-faq .crumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(30px, 5vw, 72px) 0 clamp(30px, 4.5vw, 56px);
  background:
    radial-gradient(115% 85% at 8% 0%, rgba(43, 240, 196, .11), transparent 58%),
    radial-gradient(90% 70% at 100% 12%, rgba(255, 122, 31, .07), transparent 60%);
}

.page-faq .faq-hero .container {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  align-content: start;
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 800;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.78;
  color: var(--mute);
}

.page-faq .hero-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 8px;
  margin-top: 4px;
}

.page-faq .hero-path__node {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--deck);
  font-size: 14px;
  line-height: 1.4;
  color: var(--paper);
  white-space: nowrap;
}

.page-faq .hero-path__node b {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .hero-path__arrow {
  width: 40px;
  height: 12px;
  flex: none;
  color: var(--line);
}

.page-faq .faq-jump {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin: clamp(24px, 3.5vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--deck);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color .2s ease, background-color .2s ease;
}

.page-faq .faq-jump a:hover {
  border-color: var(--cyan);
  background: var(--board);
}

.page-faq .faq-jump b {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-faq .faq-block {
  padding: clamp(34px, 5vw, 68px) 0;
  border-top: 1px solid rgba(51, 70, 63, .85);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 12px;
  max-width: 74ch;
  margin-bottom: clamp(18px, 2.8vw, 34px);
}

.page-faq .faq-block__head .band {
  display: block;
  width: 38%;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(43, 240, 196, 0));
  transition: width .22s ease-out;
}

.page-faq .faq-block__title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.018em;
  font-weight: 800;
}

.page-faq .faq-block__lead {
  margin: 0;
  font-size: clamp(14.5px, 1.6vw, 16.5px);
  line-height: 1.78;
  color: var(--mute);
}

/* ---------- 问答列表 ---------- */
.page-faq .qa-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-faq .qa-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
  padding: clamp(20px, 2.6vw, 28px) 0;
  border-top: 1px solid rgba(51, 70, 63, .62);
}

.page-faq .qa-list > .qa-item:first-child {
  border-top: 0;
}

.page-faq .qa-item__no {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .qa-item__no::before {
  content: "";
  width: 2px;
  height: 14px;
  border-radius: 1px;
  background: var(--cyan);
}

.page-faq .qa-item__q {
  position: relative;
  margin: 0;
  padding-left: 15px;
  font-size: clamp(16.5px, 1.9vw, 19px);
  line-height: 1.5;
  letter-spacing: -0.005em;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .qa-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: .32em;
  bottom: .32em;
  width: 2px;
  border-radius: 1px;
  background: var(--line);
  transition: background-color .22s ease, box-shadow .22s ease;
}

.page-faq .qa-item:has(.qa-fold[open]) .qa-item__q::before {
  background: var(--orange);
  box-shadow: 0 0 0 1px rgba(255, 122, 31, .35);
}

.page-faq .qa-item__a {
  min-width: 0;
  padding: clamp(16px, 2.2vw, 24px) clamp(16px, 2.4vw, 26px);
  border-radius: 20px;
  border: 1px solid rgba(51, 70, 63, .9);
  background: var(--board);
  transition: border-color .22s ease;
}

.page-faq .qa-item__a:hover {
  border-color: rgba(43, 240, 196, .45);
}

.page-faq .qa-item__a > p {
  margin: 0;
  font-size: clamp(14.5px, 1.55vw, 16px);
  line-height: 1.82;
  color: var(--faq-body);
}

.page-faq .qa-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 196, .4);
  transition: border-color .2s ease;
}

.page-faq .qa-item__a a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .qa-num {
  font-family: var(--mono);
  font-size: .95em;
  letter-spacing: .02em;
  color: var(--cyan);
}

/* ---------- 折叠回答 ---------- */
.page-faq .qa-fold {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-faq .qa-fold > summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
  transition: color .2s ease;
}

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

.page-faq .qa-fold > summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform .2s ease;
}

.page-faq .qa-fold[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .qa-fold > summary:hover {
  color: var(--paper);
}

.page-faq .qa-fold > p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 配图 ---------- */
.page-faq .qa-figure {
  grid-column: 1 / -1;
  min-width: 0;
  margin: clamp(14px, 2vw, 22px) 0 0;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--board), var(--ink));
}

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

.page-faq .qa-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid rgba(51, 70, 63, .7);
  font-size: 13px;
  line-height: 1.65;
  color: var(--mute);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  padding: clamp(34px, 5vw, 68px) 0 clamp(48px, 7vw, 92px);
  border-top: 1px solid rgba(51, 70, 63, .85);
  background: linear-gradient(180deg, rgba(18, 22, 26, 0) 0%, rgba(18, 22, 26, .7) 100%);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 880px) {

  .page-faq .qa-item {
    grid-template-columns: var(--faq-idx) minmax(0, var(--faq-q)) minmax(0, 1fr);
    gap: 0 var(--faq-gap);
    align-items: start;
    padding: clamp(24px, 2.8vw, 34px) 0;
  }

  .page-faq .qa-item__no {
    padding-top: 5px;
  }

  .page-faq .qa-item__q {
    padding-left: 16px;
  }

  .page-faq .qa-figure {
    grid-column: 2 / -1;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 28px;
  }
}

@media (min-width: 1180px) {

  .page-faq {
    --faq-q: 320px;
    --faq-gap: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {

  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}