.page-faq {
  --faq-aside-w: 272px;
  --faq-gap: 28px;
  background: var(--ink);
  color: var(--white);
}

/* ── 首屏 ───────────────────────────────────────── */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 0;
  background:
    radial-gradient(120% 110% at 10% 0%, rgba(53, 240, 208, 0.15), transparent 58%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(42, 51, 88, 0.55) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(42, 51, 88, 0.32) 0 1px, transparent 1px 72px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -130px;
  right: -110px;
  width: min(62vw, 470px);
  height: 300px;
  background: linear-gradient(118deg, rgba(255, 107, 44, 0.34), rgba(255, 107, 44, 0) 72%);
  transform: rotate(-16deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-bottom: 28px;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.18s ease;
}

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

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

.page-faq .eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  border: 1px solid rgba(53, 240, 208, 0.42);
  border-radius: 999px;
  background: rgba(53, 240, 208, 0.08);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq h1.display-xl {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(29px, 7vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-hero__inner .lead {
  max-width: 54ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__media {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--panel);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ── 主体两栏 ───────────────────────────────────── */

.page-faq .faq-main {
  padding: 32px 0 56px;
  background: linear-gradient(180deg, var(--ink) 0%, #090d1c 100%);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-aside__inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

/* 搜索框 */

.page-faq .faq-search {
  display: block;
  padding: 12px 14px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-search__input {
  box-sizing: border-box;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(11, 16, 38, 0.88);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(147, 162, 194, 0.68);
}

.page-faq .faq-search__input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 208, 0.16);
}

/* 分类目录 */

.page-faq .faq-aside__label {
  margin: 2px 0 0;
  padding-left: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

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

.page-faq .faq-toc__link {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 0 1 auto;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: 8px;
  background: rgba(21, 24, 31, 0.74);
  font-size: 13px;
  color: var(--white);
  text-decoration: none;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(53, 240, 208, 0.09);
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-toc__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-toc__text {
  flex: 1 1 auto;
  white-space: nowrap;
}

.page-faq .faq-toc__n {
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

.page-faq .faq-aside__hint {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-aside__mail {
  font-family: var(--font-mono);
  color: var(--cyan);
  word-break: break-all;
}

/* ── 问答流 ─────────────────────────────────────── */

.page-faq .faq-flow {
  display: flex;
  flex-direction: column;
  gap: 26px;
  min-width: 0;
}

.page-faq .faq-map {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-map img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-group {
  position: relative;
  overflow: hidden;
  scroll-margin-top: calc(var(--header-h) + 16px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(21, 24, 31, 0.62);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
}

.page-faq .faq-group--jade {
  background: linear-gradient(135deg, rgba(12, 58, 59, 0.86), rgba(21, 24, 31, 0.88) 70%);
}

.page-faq .faq-group--jade::before {
  background: var(--cyan);
}

.page-faq .faq-group--violet {
  background: linear-gradient(135deg, rgba(34, 26, 69, 0.9), rgba(21, 24, 31, 0.88) 70%);
}

.page-faq .faq-group--violet::before {
  background: var(--orange);
}

.page-faq .faq-group--wine {
  background: linear-gradient(135deg, rgba(59, 18, 38, 0.86), rgba(21, 24, 31, 0.88) 70%);
}

.page-faq .faq-group--wine::before {
  background: var(--warn);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 17px 18px 15px 24px;
  border-bottom: 1px solid rgba(42, 51, 88, 0.85);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-group__head .h-section {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-group__n {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
}

.page-faq .faq-group__list {
  padding: 4px 18px 8px 24px;
}

.page-faq .qa {
  border-bottom: 1px solid rgba(42, 51, 88, 0.7);
}

.page-faq .qa:last-child {
  border-bottom: 0;
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

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

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

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

.page-faq .qa__dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 208, 0.16);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa[open] .qa__dot {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 44, 0.2);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
  transition: color 0.18s ease;
}

.page-faq .qa__summary:hover .qa__q {
  color: var(--cyan);
}

.page-faq .qa[open] .qa__q {
  color: var(--cyan);
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform 0.22s ease, background 0.22s ease;
}

.page-faq .qa__mark::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

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

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

.page-faq .qa__body {
  padding: 0 0 18px 21px;
}

.page-faq .qa__body p {
  max-width: 64ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .qa__body strong {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cyan);
}

/* ── 结尾行动区 ─────────────────────────────────── */

.page-faq .faq-cta {
  padding: 22px 20px 24px;
  border: 1px solid rgba(255, 107, 44, 0.42);
  border-radius: var(--radius);
  background: linear-gradient(118deg, rgba(255, 107, 44, 0.16), rgba(21, 24, 31, 0.92) 64%);
}

.page-faq .faq-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-cta__text {
  max-width: 58ch;
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ── 断点 ───────────────────────────────────────── */

@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding-top: 38px;
  }

  .page-faq .faq-hero__inner {
    padding-bottom: 32px;
  }

  .page-faq .faq-hero__inner .lead {
    font-size: 16px;
  }

  .page-faq .faq-main {
    padding: 42px 0 72px;
  }

  .page-faq .faq-flow {
    gap: 32px;
  }

  .page-faq .faq-group__head {
    padding: 20px 22px 16px 28px;
  }

  .page-faq .faq-group__head .h-section {
    font-size: 22px;
  }

  .page-faq .faq-group__list {
    padding: 6px 22px 10px 28px;
  }

  .page-faq .qa__summary {
    padding: 17px 0;
  }

  .page-faq .qa__body {
    padding: 0 0 20px 21px;
  }

  .page-faq .faq-cta {
    padding: 26px 28px 28px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-aside-w) minmax(0, 1fr);
    gap: 42px;
    align-items: start;
  }

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

  .page-faq .faq-toc {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-toc__link {
    width: 100%;
    box-sizing: border-box;
  }

  .page-faq .faq-hero__inner {
    padding-bottom: 38px;
  }
}