.page-faq {
  --faq-line: rgba(154, 166, 194, .18);
  --faq-panel: rgba(14, 23, 56, .72);
  --faq-accent: var(--cyan);
  --faq-accent-soft: rgba(53, 231, 224, .12);
  background: var(--ink);
  color: var(--mist);
}

.page-faq .tone-a { --faq-accent: var(--cyan); --nav-accent: var(--cyan); --chip-accent: var(--cyan); }
.page-faq .tone-b { --faq-accent: var(--gold); --nav-accent: var(--gold); --chip-accent: var(--gold); }
.page-faq .tone-c { --faq-accent: var(--magenta); --nav-accent: var(--magenta); --chip-accent: var(--magenta); }
.page-faq .tone-d { --faq-accent: var(--cyan-soft); --nav-accent: var(--cyan-soft); --chip-accent: var(--cyan-soft); }
.page-faq .tone-e { --faq-accent: var(--gold-deep); --nav-accent: var(--gold-deep); --chip-accent: var(--gold-deep); }
.page-faq .tone-f { --faq-accent: var(--mist); --nav-accent: var(--mist); --chip-accent: var(--mist); }

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3vw, 28px);
  padding-bottom: 6px;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(154, 166, 194, .5);
}

.page-faq .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur-2) var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 72px) 0 clamp(30px, 4.5vw, 56px);
  background:
    radial-gradient(110% 84% at 92% -6%, rgba(53, 231, 224, .18), transparent 58%),
    radial-gradient(88% 72% at 2% 104%, rgba(246, 179, 60, .14), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -26%;
  right: -14%;
  width: min(640px, 66vw);
  aspect-ratio: 1 / 1;
  background: linear-gradient(140deg, rgba(53, 231, 224, .12), rgba(255, 77, 141, .07));
  clip-path: polygon(20% 0, 100% 0, 100% 80%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-cyan), rgba(246, 179, 60, .38), transparent);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 940px;
}

.page-faq .faq-title {
  margin: 14px 0 0;
  color: var(--paper);
  letter-spacing: .02em;
  font-size: clamp(30px, 6vw, 60px);
  line-height: 1.12;
  font-weight: 900;
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hot {
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-faq .faq-hot-label {
  display: block;
  margin-bottom: 12px;
  color: var(--mist);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--faq-line);
  background: rgba(14, 23, 56, .72);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease), background var(--dur-2) var(--ease);
}

.page-faq .faq-chip::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--chip-accent, var(--cyan));
  box-shadow: 0 0 10px var(--chip-accent, var(--cyan));
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  transform: translateY(-2px);
  border-color: var(--chip-accent, var(--cyan));
  background: rgba(14, 23, 56, .95);
}

/* ---------- 正文区 ---------- */
.page-faq .faq-body {
  padding: clamp(30px, 5vw, 60px) 0 clamp(44px, 6vw, 84px);
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 42%, var(--ink) 100%);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 46px);
}

/* 左侧分类 */
.page-faq .faq-nav {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-l);
  background: var(--faq-panel);
  padding: 18px;
}

.page-faq .faq-nav .label {
  color: var(--mist);
}

.page-faq .faq-nav-list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  list-style: none;
  margin: 12px 0 0;
  padding: 0 0 6px;
  scrollbar-width: thin;
}

.page-faq .faq-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--r-s);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur-2) var(--ease), background var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-faq .faq-nav-link:hover,
.page-faq .faq-nav-link:focus-visible {
  color: var(--paper);
  background: rgba(53, 231, 224, .07);
  border-left-color: var(--nav-accent, var(--cyan));
}

.page-faq .faq-nav-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--nav-accent, var(--cyan));
}

.page-faq .faq-nav-hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* 右侧问答 */
.page-faq .faq-panels {
  display: flex;
  flex-direction: column;
  gap: clamp(26px, 3.6vw, 44px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 104px;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
  transition: border-color var(--dur-3) var(--ease);
}

.page-faq .faq-group:target .faq-group-head {
  border-bottom-color: var(--faq-accent);
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--faq-accent);
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: clamp(20px, 2.5vw, 27px);
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-group-note {
  margin: 0 0 0 auto;
  font-size: 13px;
  color: var(--mist);
}

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

.page-faq .faq-q {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 4px 16px 14px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.65;
  transition: color var(--dur-2) var(--ease);
}

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

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  bottom: 15px;
  width: 2px;
  border-radius: 2px;
  background: var(--faq-accent);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--dur-3) var(--ease);
}

.page-faq .faq-item[open] .faq-q::before {
  transform: scaleY(1);
}

.page-faq .faq-q:hover {
  color: var(--cyan-soft);
}

.page-faq .faq-mark {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  transition: transform var(--dur-3) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--faq-accent);
  border-radius: 2px;
}

.page-faq .faq-mark::before {
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-mark::after {
  top: 5px;
  bottom: 5px;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
  transition: transform var(--dur-2) var(--ease), opacity var(--dur-2) var(--ease);
}

.page-faq .faq-item[open] .faq-mark {
  transform: rotate(180deg);
  border-color: var(--faq-accent);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-a {
  max-width: 64ch;
  padding: 2px 4px 20px 14px;
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-a p:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-key {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(246, 179, 60, .38);
  color: var(--gold);
  font-size: 14px;
  text-decoration: none;
  transition: color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-faq .faq-link::after {
  content: "\2192";
  font-family: var(--font-mono);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 22px 0 6px;
}

.page-faq .faq-shot {
  display: block;
  width: 100%;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-l);
  overflow: hidden;
  background: rgba(7, 11, 28, .6);
  line-height: 0;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* 联系方式块 */
.page-faq .faq-contact {
  display: grid;
  gap: 10px;
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--mist);
  border-radius: var(--r-l);
  background: rgba(14, 23, 56, .62);
}

.page-faq .faq-contact-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
}

.page-faq .faq-contact-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-faq .faq-contact-val {
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-note {
  margin: 6px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* 底部引导带 */
.page-faq .faq-cta {
  display: grid;
  gap: 22px;
  margin-top: clamp(38px, 5.5vw, 72px);
  padding: clamp(26px, 4vw, 46px) clamp(20px, 4vw, 48px);
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-l);
  background:
    linear-gradient(118deg, rgba(53, 231, 224, .16) 0%, rgba(14, 23, 56, .92) 46%, rgba(246, 179, 60, .18) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 44px) 100%, 0 100%);
}

.page-faq .faq-cta-body {
  max-width: 62ch;
}

.page-faq .faq-cta-title {
  margin: 10px 0 0;
  font-size: clamp(21px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: .03em;
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-cta-text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .page-faq .faq-contact-note {
    grid-column: 1 / -1;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(216px, 256px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 96px;
    backdrop-filter: blur(8px);
  }

  .page-faq .faq-nav-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    margin-top: 14px;
  }

  .page-faq .faq-nav-link {
    white-space: normal;
  }
}

@media (max-width: 599px) {
  .page-faq .faq-group-note {
    flex-basis: 100%;
    margin-left: 0;
  }

  .page-faq .faq-a,
  .page-faq .faq-q {
    padding-left: 12px;
  }

  .page-faq .faq-contact-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-nav-link,
  .page-faq .faq-q,
  .page-faq .faq-mark,
  .page-faq .faq-q::before,
  .page-faq .faq-mark::after {
    transition: none;
  }

  .page-faq .faq-chip:hover {
    transform: none;
  }
}