/* ===== 常见问答 · page-faq ===== */
.page-faq {
  --faq-pad: 28px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  overflow-x: hidden;
}

.page-faq .wrap {
  max-width: var(--wrap);
}

.page-faq .breadcrumbs {
  padding: 18px 0 14px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tide);
}

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

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 0 0 34px;
  background:
    radial-gradient(110% 82% at 6% -12%, rgba(111, 233, 224, .14), transparent 62%),
    radial-gradient(88% 70% at 98% 4%, rgba(255, 90, 31, .10), transparent 60%),
    linear-gradient(180deg, var(--deep) 0%, var(--ink) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 28px);
  opacity: .45;
  pointer-events: none;
}

.page-faq .faq-hero-frame {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 22px 16px 24px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(4, 18, 31, .62), rgba(4, 18, 31, .18));
}

.page-faq .faq-hero-frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 32px;
  height: 32px;
  border-top: 2px solid var(--ice);
  border-left: 2px solid var(--ice);
  pointer-events: none;
}

.page-faq .faq-hero-frame::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 32px;
  height: 32px;
  border-bottom: 2px solid var(--orange);
  border-right: 2px solid var(--orange);
  pointer-events: none;
}

.page-faq .faq-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ice);
  text-transform: uppercase;
}

.page-faq .faq-eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 7.4vw, 50px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 40ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-stats li {
  padding: 12px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 64, 94, .5);
}

.page-faq .faq-hero-stats .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--yellow);
}

.page-faq .faq-hero-stats .stat-cap {
  display: block;
  margin-top: 5px;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--tide);
}

.page-faq .faq-note {
  margin: 12px 0 0;
  padding: 11px 13px;
  background: var(--chart);
  color: #1b2a34;
  border-radius: var(--radius);
  font-size: 12.5px;
  line-height: 1.7;
  box-shadow: 4px 5px 0 rgba(4, 18, 31, .5);
}

.page-faq .faq-note strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #0a2a43;
}

/* ---------- 主视觉 ---------- */
.page-faq .faq-visual {
  padding: 26px 0 0;
}

.page-faq .faq-visual .media-frame {
  border: 1px solid var(--line);
  background: var(--deep);
}

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

/* ---------- 分屏骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 34px 0 52px;
}

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

/* ---------- 左：分类刻度 ---------- */
.page-faq .faq-toc {
  align-self: start;
  padding: 14px 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(16, 64, 94, .62), rgba(4, 18, 31, .78));
}

.page-faq .faq-toc-head {
  margin: 0 0 10px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--tide);
}

.page-faq .faq-toc .toc-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc .toc-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 9px;
  border-left: 2px solid transparent;
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.5;
  text-decoration: none;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.page-faq .faq-toc .toc-link .mono {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--yellow);
}

.page-faq .faq-toc .toc-link:hover {
  background: rgba(111, 233, 224, .08);
  border-left-color: var(--line-strong);
  color: var(--paper);
}

.page-faq .faq-toc .toc-link[aria-current="true"] {
  border-left-color: var(--ice);
  background: linear-gradient(90deg, rgba(111, 233, 224, .16), transparent 88%);
  color: var(--paper);
}

.page-faq .faq-toc .toc-link[aria-current="true"] .mono {
  color: var(--orange);
}

.page-faq .faq-toc-cta {
  display: inline-flex;
  margin-top: 14px;
  font-size: 13px;
}

/* ---------- 右：折叠问答 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: 44px;
}

.page-faq .faq-group .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .sec-num {
  padding: 2px 8px;
  border-radius: var(--radius);
  background: rgba(255, 210, 63, .12);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--yellow);
}

.page-faq .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .sec-note {
  flex-basis: 100%;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--tide);
}

.page-faq .qa-item {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--mid);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(10, 42, 67, .88), rgba(4, 18, 31, .9));
  transition: border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.page-faq .qa-item:hover {
  border-left-color: var(--ice);
}

.page-faq .qa-item[open] {
  border-left-color: var(--orange);
  background: linear-gradient(180deg, rgba(16, 64, 94, .92), rgba(4, 18, 31, .94));
  box-shadow: inset 0 0 0 1px rgba(255, 90, 31, .14);
}

.page-faq .qa-item > summary {
  position: relative;
  padding: 14px 46px 14px 15px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.55;
  letter-spacing: -.005em;
  color: var(--paper);
}

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

.page-faq .qa-item > summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 17px;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--ice);
  border-bottom: 2px solid var(--ice);
  transform: rotate(45deg);
  transition: transform .2s ease, border-color .2s ease;
}

.page-faq .qa-item[open] > summary::after {
  border-color: var(--orange);
  transform: rotate(-135deg);
}

.page-faq .qa-body {
  max-width: 62ch;
  padding: 0 17px 15px;
  font-size: 14.5px;
  line-height: 1.92;
  color: var(--mist);
}

.page-faq .qa-body p {
  margin: 0;
}

.page-faq .qa-body a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

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

.page-faq .qa-body .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1em;
  letter-spacing: .02em;
  color: var(--yellow);
}

.page-faq .faq-support-figure {
  margin: 0 0 14px;
  border: 1px solid var(--line);
  background: var(--deep);
}

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

/* ---------- 尾部联系引导 ---------- */
.page-faq .faq-ask {
  padding: 0 0 60px;
}

.page-faq .faq-ask-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 26px 18px 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background:
    radial-gradient(100% 90% at 4% 0%, rgba(111, 233, 224, .12), transparent 58%),
    linear-gradient(180deg, var(--deep), var(--ink));
}

.page-faq .faq-ask-label {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  background: var(--chart);
  color: #10344a;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
}

.page-faq .faq-ask h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 5vw, 27px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-ask-text {
  margin: 0 0 18px;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-ask-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 1px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact-list .fc-label {
  flex: 0 0 76px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--tide);
}

.page-faq .faq-contact-list .fc-value {
  flex: 1 1 200px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  word-break: break-word;
  color: var(--paper);
}

.page-faq .faq-ask-hours {
  margin: 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tide);
}

/* ---------- 断点 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-hero-frame {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 36px;
    padding: 32px 30px 34px;
  }

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

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 44px;
    padding: 42px 0 64px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--frame-top) + 20px);
    padding: 18px 14px 20px;
  }

  .page-faq .qa-item > summary {
    font-size: 16px;
    padding: 15px 50px 15px 18px;
  }

  .page-faq .qa-body {
    padding: 0 20px 17px;
    font-size: 15px;
  }

  .page-faq .faq-ask-card {
    padding: 34px 34px 28px;
  }

  .page-faq .faq-visual {
    padding: 34px 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc .toc-link,
  .page-faq .qa-item,
  .page-faq .qa-item > summary::after {
    transition: none;
  }
}