.page-faq {
  --faq-rail-w: 244px;
  --faq-key-bg: #E2EEE7;
  background: var(--ice-2);
  color: var(--ink);
}

/* ---------- 头部氛围区 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--ice);
  border-bottom: 6px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(31, 164, 108, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 164, 108, 0.14) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(28px, 5vw, 52px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 22px;
}

.page-faq .faq-hero .breadcrumb__link,
.page-faq .faq-hero .breadcrumb__current {
  color: rgba(233, 243, 238, 0.7);
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--yellow);
}

.page-faq .faq-hero .eyebrow {
  color: var(--line);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.4vw, 70px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ice-2);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.78;
  color: rgba(233, 243, 238, 0.84);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: rgba(233, 243, 238, 0.74);
}

.page-faq .faq-hero__meta .mono {
  margin-right: 6px;
  font-size: 21px;
  font-weight: 700;
  color: var(--yellow);
}

.page-faq .faq-hero__figure {
  position: relative;
  z-index: 1;
  border-top: 2px solid rgba(31, 164, 108, 0.32);
  line-height: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: clamp(150px, 30vw, 300px);
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(32px, 6vw, 64px);
  padding-bottom: clamp(48px, 8vw, 88px);
}

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

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

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

.page-faq .faq-rail .rail__link {
  display: block;
  padding: 7px 0;
  font-size: 14px;
}

.page-faq .faq-rail__note {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--ice);
  border: 2px solid var(--stroke);
  border-left: 6px solid var(--yellow);
}

.page-faq .faq-rail__note p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--body-soft);
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-topic {
  margin-bottom: clamp(38px, 6vw, 66px);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-topic .section__lead {
  max-width: 52ch;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-item {
  background: var(--ice-2);
  border: 2px solid var(--stroke);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--pitch);
}

.page-faq .faq-item[open] {
  border-color: var(--pitch);
  box-shadow: 5px 5px 0 rgba(11, 59, 42, 0.16);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px 14px;
  align-items: start;
  padding: 16px 16px 15px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

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

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

.page-faq .faq-num {
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--line);
}

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

.page-faq .faq-q__text {
  min-width: 0;
  overflow-wrap: break-word;
}

.page-faq .faq-mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  flex: none;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--pitch);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-mark::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-mark::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

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

.page-faq .faq-a {
  padding: 0 16px 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-soft);
  border-top: 1px solid var(--stroke);
  padding-top: 14px;
}

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

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

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

.page-faq .faq-key {
  display: inline-block;
  padding: 0 5px;
  background: var(--faq-key-bg);
  border-bottom: 2px solid var(--line);
  font-weight: 600;
  color: var(--ink);
}

/* ---------- 信息图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
  padding: 12px;
  background: var(--ice);
  border: 2px solid var(--stroke);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--graphite);
}

/* ---------- 横向主题带 ---------- */
.page-faq .band {
  margin: clamp(30px, 5vw, 52px) 0;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 20px;
  }

  .page-faq .faq-q {
    padding: 18px 22px 17px;
    gap: 12px 18px;
    font-size: 18px;
  }

  .page-faq .faq-a {
    padding: 16px 22px 22px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-rail__note {
    padding: 18px;
  }
  .page-faq .faq-figure {
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after {
    transition: none;
  }
}
<<<END>>>