.page-faq {
  --faq-line: rgba(127, 168, 180, 0.22);
  --faq-line-soft: rgba(127, 168, 180, 0.13);
  --faq-copper-wash: rgba(192, 138, 62, 0.08);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(40px, 8vw, 86px) 0 clamp(30px, 5vw, 52px);
  overflow: hidden;
}

.page-faq .faq-hero__slab {
  position: absolute;
  top: -20%;
  right: -14%;
  width: min(700px, 88%);
  height: 145%;
  background: linear-gradient(208deg, rgba(36, 51, 63, 0.92) 0%, rgba(22, 36, 47, 0.62) 48%, rgba(10, 26, 40, 0) 100%);
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  z-index: 0;
  pointer-events: none;
}

.page-faq .faq-hero__ripple {
  position: absolute;
  top: clamp(8px, 3vw, 34px);
  right: clamp(-40px, -2vw, 10px);
  width: clamp(170px, 30vw, 330px);
  height: auto;
  color: var(--aqua);
  opacity: 0.34;
  z-index: 0;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(31px, 7.4vw, 62px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  max-width: 17em;
  text-wrap: balance;
}

.page-faq .faq-hero .prose--lead {
  margin-top: clamp(18px, 2.6vw, 26px);
  max-width: 40em;
  color: var(--text-soft);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: clamp(30px, 5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

.page-faq .faq-hero__facts li {
  border-top: 1px solid var(--faq-line);
  padding-top: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--steel);
}

.page-faq .faq-hero__facts strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(19px, 2.6vw, 23px);
  letter-spacing: 0.06em;
  color: var(--copper-pale);
}

/* ---------- 页首横幅图 ---------- */
.page-faq .faq-banner {
  margin: 0;
  border-top: 1px solid var(--faq-line-soft);
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-banner .figure__frame {
  padding: 0;
  aspect-ratio: 8 / 3;
  overflow: hidden;
  background: var(--night);
}

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

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(44px, 7vw, 84px) 0 clamp(40px, 6vw, 72px);
}

.page-faq .faq-body__head .prose {
  margin-top: 14px;
  color: var(--text-soft);
}

.page-faq .faq-body .filter-bar {
  margin-top: clamp(24px, 4vw, 36px);
  flex-wrap: wrap;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 54px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq .faq-list {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa {
  border-top: 1px solid var(--faq-line);
  border-left: 2px solid transparent;
  padding-left: clamp(12px, 2.4vw, 24px);
  transition: border-color 0.32s var(--ease-water), background-color 0.32s var(--ease-water);
}

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

.page-faq .qa[open] {
  border-left-color: var(--copper);
  background: linear-gradient(90deg, var(--faq-copper-wash), rgba(192, 138, 62, 0) 68%);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: clamp(10px, 2vw, 20px);
  padding: clamp(17px, 2.7vw, 25px) 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(16.5px, 2.1vw, 21px);
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

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

.page-faq .qa__mark {
  position: relative;
  align-self: center;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--aqua);
  transition: transform 0.32s var(--ease-water), opacity 0.32s var(--ease-water), background-color 0.32s var(--ease-water);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--copper);
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 0 clamp(20px, 3vw, 30px);
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
}

.page-faq .qa__a p + p {
  margin-top: 12px;
}

/* ---------- 右侧延伸入口 ---------- */
.page-faq .faq-rail {
  display: grid;
  gap: 0;
}

.page-faq .faq-rail .rail__item {
  border-top: 1px solid var(--faq-line-soft);
  padding: 18px 0 20px;
}

.page-faq .faq-rail .rail__item p {
  margin: 8px 0 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 条件叠加区块 ---------- */
.page-faq .faq-conditions {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-conditions__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-conditions__figure {
  margin: 0;
}

.page-faq .faq-conditions__figure .figure__frame {
  padding: 0;
  aspect-ratio: 12 / 7;
  overflow: hidden;
  background: var(--slate);
}

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

.page-faq .faq-conditions__text .prose {
  margin-top: 14px;
  color: var(--text-soft);
}

.page-faq .faq-conditions__text .prose + .prose {
  margin-top: 12px;
}

.page-faq .faq-conditions__text .btn {
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-ask {
  position: relative;
  overflow: hidden;
}

.page-faq .faq-ask__ripple {
  position: absolute;
  left: -60px;
  bottom: -70px;
  width: clamp(180px, 30vw, 300px);
  height: auto;
  color: var(--copper);
  opacity: 0.28;
  pointer-events: none;
}

.page-faq .faq-ask__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-ask .prose {
  margin-top: 14px;
  max-width: 42em;
  color: var(--text-soft);
}

.page-faq .faq-ask__list {
  list-style: none;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  max-width: 46em;
}

.page-faq .faq-ask__list li {
  display: grid;
  gap: 4px;
  border-top: 1px solid var(--faq-line);
  padding: 16px 0;
}

.page-faq .faq-ask__label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--copper);
  text-transform: uppercase;
}

.page-faq .faq-ask__value {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-ask__note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-ask .btn {
  margin-top: clamp(24px, 3.5vw, 34px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .qa__a {
    padding-left: calc(2.6em + 14px);
  }

  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-ask__list li {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: start;
    column-gap: 20px;
  }

  .page-faq .faq-ask__note {
    grid-column: 2;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 268px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-conditions__inner {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }
}