.page-faq {
  --faq-radius: 14px;
  --faq-line: var(--line-light);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 0 0;
  color: var(--silver-300);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(820px 400px at 84% -6%, rgba(47, 216, 198, 0.18), transparent 62%),
    radial-gradient(680px 360px at 6% 108%, rgba(255, 162, 58, 0.10), transparent 64%);
}

.page-faq .faq-hero .crumbs {
  color: var(--silver-500);
  font-size: 13px;
  margin-bottom: 24px;
}

.page-faq .faq-hero .crumbs a {
  color: var(--silver-300);
  text-decoration: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__lead .eyebrow {
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero .h-display {
  color: #ffffff;
  margin: 10px 0 16px;
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.16;
  max-width: 20ch;
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver-300);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  overflow: hidden;
  align-self: start;
}

.page-faq .stat {
  background: rgba(16, 42, 68, 0.74);
  padding: 16px 18px;
}

.page-faq .stat__value {
  margin: 0 0 4px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-faq .stat__num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .stat__unit {
  font-size: 12px;
  color: var(--silver-500);
}

.page-faq .stat__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--silver-300);
}

.page-faq .faq-jump {
  margin-top: 30px;
  padding: 14px 0 18px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-jump__link {
  flex: 1 1 190px;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background: rgba(16, 42, 68, 0.55);
  color: var(--silver-300);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 216, 198, 0.10);
  color: #ffffff;
}

.page-faq .faq-jump__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  padding-top: 44px;
  padding-bottom: 72px;
}

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

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--silver-500);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  flex: 0 0 auto;
  display: block;
  padding: 7px 13px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink-800);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-deep);
}

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

/* ---------- 区块 ---------- */
.page-faq .faq-block {
  margin-bottom: 56px;
}

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

.page-faq .faq-block__head {
  margin-bottom: 22px;
}

.page-faq .faq-block__head .eyebrow {
  color: var(--cyan-deep);
  margin: 0;
}

.page-faq .faq-block__head .h-section {
  margin: 8px 0 10px;
}

.page-faq .faq-block__lead {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .faq-block__lead a,
.page-faq .check p a,
.page-faq .qa__extra a,
.page-faq .ticket-cta a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 步骤 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 24px;
}

.page-faq .step:last-child {
  padding-bottom: 0;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 46px;
  bottom: 6px;
  border-left: 2px dashed var(--faq-line);
}

.page-faq .step:last-child::before {
  display: none;
}

.page-faq .step__num {
  position: relative;
  z-index: 1;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink-800);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  display: grid;
  place-items: center;
}

.page-faq .step__body .h-sub {
  margin: 9px 0 6px;
}

.page-faq .step__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure .media__frame {
  position: relative;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--ink-900);
}

.page-faq .media--wide .media__frame {
  aspect-ratio: 16 / 10;
}

.page-faq .media--macro .media__frame {
  aspect-ratio: 3 / 2;
}

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

.page-faq .faq-figure .media__tag {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 4px 9px;
  border-radius: 5px;
  background: rgba(10, 26, 42, 0.78);
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-faq .faq-figure .media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver-500);
}

/* ---------- 失败情形 ---------- */
.page-faq .fail-list {
  margin-top: 28px;
  padding: 22px 20px;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--paper);
}

.page-faq .fail-list .h-sub {
  margin: 0 0 14px;
}

.page-faq .fail-rows {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .fail-row {
  padding-left: 14px;
  border-left: 3px solid var(--amber);
}

.page-faq .fail-row dt {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  margin-bottom: 4px;
}

.page-faq .fail-row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

/* ---------- 自查清单 ---------- */
.page-faq .check-grid {
  display: grid;
  gap: 14px;
}

.page-faq .check {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 20px 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.page-faq .check__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-faq .check__idx {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--silver-500);
}

.page-faq .check .h-sub {
  margin: 2px 0 0;
}

.page-faq .check p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

.page-faq .check p.check__verdict {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line);
  font-size: 13.5px;
  color: var(--ink-800);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-group {
  margin-bottom: 28px;
}

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

.page-faq .qa-group__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 18px;
  color: var(--ink-900);
}

.page-faq .qa {
  margin-bottom: 10px;
  border: 1px solid var(--faq-line);
  border-radius: 12px;
  background: #ffffff;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.page-faq .qa[open] {
  border-color: var(--cyan);
  background: #ffffff;
}

.page-faq .qa > summary {
  position: relative;
  display: block;
  padding: 15px 46px 15px 18px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
  transition: background-color 0.2s ease;
}

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

.page-faq .qa > summary:hover {
  background: var(--paper);
}

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-deep);
}

.page-faq .qa[open] > summary::after {
  content: "\2013";
}

.page-faq .qa__a {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .qa__conclusion {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink-900);
}

.page-faq .qa__how {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--graphite);
}

.page-faq .qa__how-label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border-radius: 4px;
  background: rgba(47, 216, 198, 0.16);
  color: var(--cyan-deep);
  font-size: 12px;
  font-weight: 600;
  vertical-align: 1px;
}

.page-faq .qa__extra {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--silver-500);
}

/* ---------- 工单 ---------- */
.page-faq .ticket-layout {
  display: grid;
  gap: 16px;
}

.page-faq .ticket-form,
.page-faq .ticket-sla {
  min-width: 0;
  padding: 22px 20px;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--paper);
}

.page-faq .ticket-form .h-sub,
.page-faq .ticket-sla .h-sub {
  margin: 0 0 14px;
}

.page-faq .ticket-items,
.page-faq .sla-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .ticket-items li {
  display: flex;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--graphite);
}

.page-faq .ticket-items .mono {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 12.5px;
  color: var(--cyan-deep);
}

.page-faq .sla-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .sla-row p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--graphite);
}

.page-faq .ticket-cta {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 勘误补录 ---------- */
.page-faq .errata-grid {
  display: grid;
  gap: 14px;
}

.page-faq .errata-card {
  min-width: 0;
  padding: 22px 20px;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: #ffffff;
}

.page-faq .errata-card .h-sub {
  margin: 0;
}

.page-faq .errata-card--accent {
  border-color: rgba(47, 216, 198, 0.5);
  background-image: linear-gradient(150deg, rgba(18, 58, 94, 0.07), rgba(47, 216, 198, 0.12));
}

.page-faq .errata-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .errata-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--graphite);
}

.page-faq .errata-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-faq .errata-card p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--graphite);
}

.page-faq .errata-card p:last-child {
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .check-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .ticket-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .errata-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    padding-top: 40px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .errata-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 56px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-left: 1px solid var(--faq-line);
  }

  .page-faq .faq-rail__link {
    flex: none;
    padding: 9px 0 9px 16px;
    margin-left: -1px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: none;
    color: var(--silver-500);
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--cyan);
    color: var(--cyan-deep);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-body .faq-block {
    margin-bottom: 64px;
  }

  .page-faq .check {
    padding: 24px 22px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa > summary,
  .page-faq .faq-jump__link,
  .page-faq .faq-rail__link {
    transition: none;
  }
}