.page-faq {
  --faq-body-text: #C9D9D1;
  --faq-cut: 14px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 3vw, 32px) clamp(48px, 7vw, 88px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 220px;
  background:
    radial-gradient(60% 120% at 12% 100%, rgba(198, 255, 61, 0.07), transparent 70%),
    radial-gradient(45% 100% at 88% 100%, rgba(255, 90, 43, 0.06), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

.page-faq .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 48px);
  align-items: end;
}

.page-faq .faq-hero-copy .t-index {
  color: var(--lime-dim);
  margin-bottom: 18px;
}

.page-faq .faq-hero-copy .t-display {
  margin: 0 0 24px;
  max-width: 15ch;
}

.page-faq .faq-hero-copy .t-display b {
  font-weight: 800;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-lede {
  max-width: 46ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.8;
  color: var(--faq-body-text);
  margin: 0 0 28px;
}

.page-faq .faq-hero-btns {
  gap: 12px;
}

.page-faq .faq-hero-figure {
  margin: 0;
  position: relative;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  border: 1px solid var(--line);
  background: var(--moss);
}

.page-faq .faq-hero-figure .media-frame {
  display: block;
  border: 0;
}

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

.page-faq .faq-hero-figure .media-cap {
  position: static;
  display: block;
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ash);
  border-top: 1px solid var(--line);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(36px, 5vw, 64px);
  padding-block: clamp(48px, 7vw, 96px);
}

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

.page-faq .faq-index {
  order: -1;
  min-width: 0;
}

/* ---------- 索引栏 ---------- */
.page-faq .faq-index-title {
  color: var(--ash);
  margin: 0 0 10px;
}

.page-faq .faq-index-total {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ash);
  margin: 0 0 18px;
  letter-spacing: 0.06em;
}

.page-faq .faq-index-total span {
  color: var(--lime);
  font-size: 22px;
  margin-right: 4px;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px;
  padding: 12px 10px 12px 12px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--fog);
  font-size: 14px;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-left-color: var(--lime);
  background: rgba(198, 255, 61, 0.05);
  color: var(--white);
}

.page-faq .faq-index-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .faq-index-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ash);
  letter-spacing: 0.1em;
}

.page-faq .faq-index-name {
  line-height: 1.4;
}

.page-faq .faq-index-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--lime-dim);
}

.page-faq .faq-index-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ash);
  padding-left: 12px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-index-note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.35);
}

.page-faq .faq-index-note a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(40px, 5vw, 72px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line);
  margin-bottom: 4px;
}

.page-faq .faq-group-num {
  font-family: var(--mono);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  color: var(--lime);
  letter-spacing: -0.02em;
  line-height: 1;
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-group-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ash);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ---------- 折叠项 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background-color 180ms ease;
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(198, 255, 61, 0.05), rgba(198, 255, 61, 0) 55%);
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 14px;
  padding: 20px 8px 20px 4px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-faq .qa-num {
  font-family: var(--mono);
  font-size: 22px;
  line-height: 1;
  color: var(--ash);
  letter-spacing: -0.02em;
  transition: color 180ms ease;
}

.page-faq .qa[open] .qa-num,
.page-faq .qa-summary:hover .qa-num {
  color: var(--lime);
}

.page-faq .qa-q {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.6;
  color: var(--fog);
  font-weight: 500;
}

.page-faq .qa-summary:hover .qa-q {
  color: var(--white);
}

.page-faq .qa-mark {
  position: relative;
  width: 16px;
  height: 16px;
  align-self: center;
  flex: none;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--lime-dim);
  transition: transform 180ms ease, background-color 180ms ease;
}

.page-faq .qa-mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .qa-mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.page-faq .qa[open] .qa-mark::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .qa[open] .qa-mark::before,
.page-faq .qa[open] .qa-mark::after {
  background: var(--lime);
}

.page-faq .qa-a {
  margin: 0 8px 24px 44px;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--lime);
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .qa-a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.35);
}

.page-faq .qa-a a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 页尾联系区 ---------- */
.page-faq .faq-contact {
  position: relative;
  border-top: 1px solid var(--line);
  background:
    repeating-linear-gradient(135deg, rgba(36, 66, 58, 0.55) 0 1px, transparent 1px 14px),
    var(--moss);
  padding-block: clamp(48px, 7vw, 88px);
  overflow: hidden;
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 90% at 78% 20%, rgba(198, 255, 61, 0.08), transparent 68%);
  pointer-events: none;
}

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

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-faq .faq-contact-copy .t-index {
  color: var(--flame);
  margin: 0 0 14px;
}

.page-faq .faq-contact-copy .t-h2 {
  margin: 0 0 18px;
  color: var(--white);
}

.page-faq .faq-contact-lede {
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body-text);
  margin: 0 0 28px;
}

.page-faq .faq-contact-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-faq .faq-contact-list .contact-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact-list .contact-key {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ash);
  grid-column: 1 / -1;
}

.page-faq .faq-contact-list .contact-value {
  color: var(--fog);
  font-size: 15px;
  line-height: 1.6;
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-list .copy-btn {
  align-self: center;
}

.page-faq .faq-contact-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ash);
  margin: 0 0 26px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-contact-media {
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .faq-contact-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.08);
}

/* ---------- 响应式 ---------- */
@media (max-width: 599px) {
  .page-faq .qa-a {
    margin-left: 0;
    margin-right: 4px;
    padding-left: 14px;
  }

  .page-faq .qa-summary {
    gap: 10px;
    padding-inline: 2px;
  }

  .page-faq .qa-num {
    font-size: 17px;
  }

  .page-faq .faq-group-head {
    grid-template-columns: auto 1fr;
    gap: 10px;
  }

  .page-faq .faq-group-count {
    grid-column: 2;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 262px;
    align-items: start;
  }

  .page-faq .faq-index {
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-faq .faq-contact-copy {
    order: -1;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero-copy .t-display {
    max-width: 13ch;
  }
}

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