.page-faq {
  --faq-line: var(--ink-600);
  --faq-panel: var(--ink-700);
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-faq .faq-crumb {
  padding-top: 20px;
  padding-bottom: 6px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-top: 8px;
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--faq-line);
  background: linear-gradient(158deg, var(--ink-800) 0%, var(--ink-900) 64%);
  overflow: hidden;
  padding: clamp(24px, 5.2vw, 60px);
}

.page-faq .hero-tick {
  position: absolute;
  width: 24px;
  height: 24px;
  z-index: 3;
}
.page-faq .hero-tick--tl {
  top: -1px; left: -1px;
  border-top: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
}
.page-faq .hero-tick--tr {
  top: -1px; right: -1px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
}
.page-faq .hero-tick--bl {
  bottom: -1px; left: -1px;
  border-bottom: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
}
.page-faq .hero-tick--br {
  bottom: -1px; right: -1px;
  border-bottom: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
}

.page-faq .faq-hero__art {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
}
.page-faq .faq-hero__art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(96deg, rgba(7, 14, 34, 0.95) 0%, rgba(7, 14, 34, 0.72) 48%, rgba(7, 14, 34, 0.42) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__body {
  position: relative;
  z-index: 2;
  max-width: 44rem;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink-050);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-300);
  max-width: 40rem;
}

/* ---------- 搜索框 ---------- */
.page-faq .faq-search {
  margin-top: 28px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--accent);
  background: rgba(14, 27, 60, 0.78);
  padding: 14px 16px 16px;
  max-width: 34rem;
}
.page-faq .faq-search__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.page-faq .faq-search__field input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--faq-line);
  color: var(--ink-050);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  padding: 8px 0 10px;
}
.page-faq .faq-search__field input::placeholder {
  color: var(--ink-500);
}
.page-faq .faq-search__field input:focus {
  outline: none;
  border-bottom-color: var(--accent);
}
.page-faq .faq-search__hint {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-500);
}

/* ---------- 分类入口 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .faq-index__card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "num name count"
    "num desc count";
  align-items: center;
  column-gap: 16px;
  padding: 18px 18px 18px 20px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--ink-500);
  background: var(--faq-panel);
  text-decoration: none;
  transition: border-color 200ms ease, background-color 200ms ease, transform 200ms ease;
}
.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  border-left-color: var(--accent);
  background: var(--ink-800);
  transform: translateX(3px);
}
.page-faq .faq-index__num {
  grid-area: num;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 500;
  line-height: 1;
  color: var(--accent);
}
.page-faq .faq-index__name {
  grid-area: name;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink-050);
}
.page-faq .faq-index__desc {
  grid-area: desc;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-300);
}
.page-faq .faq-index__count {
  grid-area: count;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-300);
  border: 1px solid var(--faq-line);
  padding: 4px 8px;
  white-space: nowrap;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-top: clamp(48px, 8vw, 96px);
  scroll-margin-top: 96px;
}

.page-faq .section__head {
  margin-bottom: 20px;
}

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .qa-item {
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
  transition: border-color 200ms ease;
}
.page-faq .qa-item[open] {
  border-color: var(--accent-dim);
}

.page-faq .qa-item__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}
.page-faq .qa-item__head::-webkit-details-marker {
  display: none;
}
.page-faq .qa-item__head:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-faq .qa-item__num {
  flex: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-300);
  border-left: 2px solid var(--faq-line);
  padding-left: 10px;
  transition: color 200ms ease, border-color 200ms ease;
}
.page-faq .qa-item[open] .qa-item__num {
  color: var(--accent);
  border-left-color: var(--accent);
}

.page-faq .qa-item__q {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.005em;
  color: var(--ink-050);
}

.page-faq .qa-item__tag {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-300);
  border: 1px solid var(--faq-line);
  padding: 3px 7px;
  opacity: 0.5;
  transition: opacity 200ms ease, color 200ms ease, border-color 200ms ease;
}
.page-faq .qa-item:hover .qa-item__tag,
.page-faq .qa-item__head:focus-visible .qa-item__tag,
.page-faq .qa-item[open] .qa-item__tag {
  opacity: 1;
  color: var(--accent);
  border-color: var(--accent-dim);
}

.page-faq .qa-item__body {
  padding: 4px 16px 18px 16px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa-item__answer {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-050);
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

.page-faq .qa-steps {
  counter-reset: qa-step;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .qa-steps li {
  position: relative;
  counter-increment: qa-step;
  padding-left: 44px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-300);
}
.page-faq .qa-steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.page-faq .qa-item__tip {
  margin: 14px 0 0;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-300);
  background: rgba(138, 92, 255, 0.08);
  border-left: 2px solid var(--violet);
}
.page-faq .qa-item__tip a {
  color: var(--accent);
}

.page-faq .qa-item__body a.link-arrow {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
}

/* ---------- 排查流程 ---------- */
.page-faq .faq-flow {
  margin-top: clamp(48px, 8vw, 96px);
  scroll-margin-top: 96px;
}

.page-faq .faq-flowline {
  display: block;
  width: 100%;
  height: auto;
  max-height: 46px;
  margin: 4px 0 24px;
}
.page-faq .faq-flowline__track {
  fill: none;
  stroke: var(--faq-line);
  stroke-width: 2;
  stroke-dasharray: 8 9;
}
.page-faq .faq-flowline__arrow {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
}
.page-faq .faq-flowline__node {
  fill: var(--ink-900);
  stroke: var(--faq-line);
  stroke-width: 2;
}
.page-faq .faq-flowline__node--now {
  fill: var(--accent);
  stroke: var(--accent);
}

.page-faq .faq-flow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-faq .faq-flow__art {
  margin: 0;
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
}
.page-faq .faq-flow__art img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-flow__art .media-frame__caption {
  display: block;
  padding: 12px 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-300);
}

.page-faq .flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .flow-steps__item {
  position: relative;
  padding: 18px 18px 18px 20px;
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-top: 2px solid var(--ink-500);
}
.page-faq .flow-steps__item:nth-child(3) {
  border-top-color: var(--accent);
}
.page-faq .flow-steps__num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
}
.page-faq .flow-steps__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink-050);
}
.page-faq .flow-steps__item p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-300);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  margin-top: clamp(48px, 8vw, 96px);
}

.page-faq .faq-help__card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  border: 1px solid var(--faq-line);
  background:
    linear-gradient(-6deg, rgba(22, 38, 79, 0.9) 0%, rgba(14, 27, 60, 0.95) 60%, rgba(7, 14, 34, 1) 100%);
  padding: clamp(22px, 4.4vw, 46px);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-help__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--violet) 100%);
}

.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--ink-050);
}

.page-faq .faq-help__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-300);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-help__list li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-300);
}
.page-faq .faq-help__list .mono {
  flex: none;
  color: var(--accent);
  font-size: 13px;
}

.page-faq .faq-help__side {
  border: 1px solid var(--faq-line);
  background: rgba(7, 14, 34, 0.6);
  padding: 20px;
  display: grid;
  gap: 8px;
  align-content: start;
}
.page-faq .faq-help__side-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-300);
}
.page-faq .faq-help__side-value {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.3;
  color: var(--accent);
}
.page-faq .faq-help__ghost {
  display: inline-block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--ink-300);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line);
  padding-bottom: 2px;
}
.page-faq .faq-help__ghost:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .page-faq .faq-help__card {
    grid-template-columns: 1.6fr 1fr;
    align-items: start;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero__frame {
    padding: clamp(40px, 5vw, 72px);
  }
  .page-faq .faq-flow__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
    gap: 28px;
  }
  .page-faq .faq-flow__art {
    position: sticky;
    top: 96px;
  }
  .page-faq .qa-item__head {
    padding: 18px 22px;
  }
  .page-faq .qa-item__body {
    padding: 6px 22px 22px 22px;
  }
  .page-faq .qa-item__q {
    font-size: 17px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__card,
  .page-faq .qa-item,
  .page-faq .qa-item__num,
  .page-faq .qa-item__tag {
    transition-duration: 1ms;
  }
  .page-faq .faq-index__card:hover,
  .page-faq .faq-index__card:focus-visible {
    transform: none;
  }
}
</main>