.page-faq {
  --faq-nav-w: 232px;
  --faq-gap: clamp(12px, 1.6vw, 18px);
  background: var(--night);
  color: var(--chalk);
  font-family: var(--font-sans);
}

.page-faq h1,
.page-faq h2 {
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: 0;
}

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

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(30px, 5vw, 60px);
  background:
    radial-gradient(760px 380px at 84% -18%, rgba(53, 240, 192, 0.16), transparent 72%),
    radial-gradient(520px 260px at 8% 118%, rgba(255, 106, 61, 0.1), transparent 70%),
    linear-gradient(180deg, var(--night) 0%, var(--turf) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
}

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

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  font-size: clamp(30px, 6.2vw, 54px);
  line-height: 1.1;
  max-width: 20ch;
}

.page-faq .lede {
  margin: 18px 0 22px;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--chalk);
  max-width: 36em;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 6px 13px;
  font-size: 13px;
  text-decoration: none;
  color: var(--cyan-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 56, 44, 0.5);
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-chip:hover {
  color: var(--night);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-hero__media {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--board);
  min-height: 180px;
}

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

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(26px, 4vw, 52px) 0 clamp(40px, 6vw, 88px);
  background: var(--night);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

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

/* 左侧分类命令栏 */
.page-faq .faq-nav {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--turf);
  padding: 16px;
}

.page-faq .faq-nav__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding-bottom: 4px;
}

.page-faq .faq-nav__list li {
  flex: none;
}

.page-faq .faq-nav__list a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--mist);
  border-left: 2px solid transparent;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-nav__list a:hover,
.page-faq .faq-nav__list a:focus-visible {
  color: var(--cyan);
  background: rgba(53, 240, 192, 0.08);
  border-left-color: var(--cyan);
}

.page-faq .faq-nav__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--board);
  color: var(--mist);
}

.page-faq .faq-nav__list a:hover .faq-nav__idx {
  color: var(--cyan-soft);
}

.page-faq .faq-nav__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-nav__note a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 192, 0.4);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 64px);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-group h2 {
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.25;
}

.page-faq .faq-group__intro {
  margin: 14px 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 40em;
}

/* 图片块 */
.page-faq .faq-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--board);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--turf);
  overflow: hidden;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(53, 240, 192, 0.35);
}

.page-faq .faq-item[open] {
  border-color: rgba(53, 240, 192, 0.5);
  background: var(--board);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px 15px 15px;
  border-left: 3px solid transparent;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--chalk);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--mist);
}

.page-faq .faq-item[open] summary {
  border-left-color: var(--cyan);
  color: var(--cyan-soft);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

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

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

.page-faq .faq-item__a {
  padding: 0 18px 18px 18px;
  border-top: 1px dashed var(--line);
  margin-top: 2px;
  padding-top: 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--chalk);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 44em;
}

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

.page-faq .faq-item__a a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 192, 0.45);
}

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

/* ---------- 联系方式分组 ---------- */
.page-faq .faq-group--contact .faq-group__head {
  border-bottom-color: rgba(255, 106, 61, 0.45);
}

.page-faq .faq-group--contact .faq-group__num {
  color: var(--mark);
}

.page-faq .faq-contact {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--mark);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 106, 61, 0.1), transparent 58%),
    var(--turf);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-contact__row:first-of-type {
  padding-top: 0;
}

.page-faq .faq-contact__k {
  flex: none;
  width: 84px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  padding-top: 3px;
}

.page-faq .faq-contact__v {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--chalk);
  word-break: break-all;
}

.page-faq .faq-contact__tip {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin: 16px 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--chalk);
  max-width: 40em;
}

.page-faq .faq-contact__dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--mark);
  box-shadow: 0 0 0 4px rgba(255, 106, 61, 0.16);
}

.page-faq .faq-contact .link-more {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  color: var(--cyan);
}

.page-faq .faq-contact .link-more::after {
  content: " →";
}

.page-faq .faq-contact .link-more:hover {
  color: var(--cyan-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-item__a {
    padding-left: 188px;
  }

  .page-faq .faq-item__a {
    padding-left: 44px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-item__a {
    padding-left: 46px;
  }

  .page-faq .faq-contact__row {
    flex-wrap: nowrap;
    align-items: baseline;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-nav__list a {
    transition: none;
  }
}
<<<END>>>