.page-faq {
  --faq-hard: 6px 6px 0 var(--ink-800);
  padding-top: 8px;
  padding-bottom: 72px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin: 20px 0 36px;
  padding: 24px 20px 26px;
  border: 2px solid var(--grid);
  background:
    radial-gradient(130% 120% at 96% -10%, rgba(22, 242, 200, 0.16), transparent 58%),
    linear-gradient(170deg, var(--panel) 0%, var(--ink-800) 100%);
  box-shadow: var(--faq-hard);
  overflow: hidden;
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  width: 32px;
  height: 32px;
  border: 2px solid var(--cyan);
  pointer-events: none;
}

.page-faq .faq-hero::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero::after {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
  border-color: var(--amber);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 10px;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(27px, 6vw, 46px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--grid);
  background: rgba(6, 26, 20, 0.62);
  color: var(--paper);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--panel);
  outline: none;
}

.page-faq .faq-hero__jump .mono {
  font-size: 11.5px;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 28px;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  border: 2px solid var(--grid);
  background: var(--ink-800);
  padding: 16px 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-left: 3px solid var(--grid);
  background: rgba(13, 42, 34, 0.5);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--cyan);
  background: var(--panel);
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-index__num {
  font-size: 11.5px;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__label {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-index__count {
  font-size: 11.5px;
  color: var(--steel);
}

/* ---------- 答案区 ---------- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-block {
  margin-bottom: 48px;
  scroll-margin-top: calc(var(--bar-h) + 24px);
}

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

.page-faq .faq-block__head {
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--grid);
}

.page-faq .faq-block__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-block--amber .faq-block__num {
  color: var(--amber);
}

.page-faq .faq-block__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(21px, 4vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-block__intro {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 价格档位 ---------- */
.page-faq .tier-grid {
  display: grid;
  gap: 10px;
  margin: 18px 0 20px;
}

.page-faq .tier {
  padding: 14px 14px 16px;
  border: 2px solid var(--grid);
  border-top: 3px solid var(--cyan);
  background: var(--panel-2);
}

.page-faq .tier--key {
  border-top-color: var(--amber);
  background: var(--panel);
  box-shadow: 4px 4px 0 rgba(245, 184, 75, 0.16);
}

.page-faq .tier__tag {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .tier__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .tier__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  margin-bottom: 10px;
  border: 2px solid var(--grid);
  background: var(--panel-2);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
  background: var(--panel);
  box-shadow: 4px 4px 0 rgba(22, 242, 200, 0.12);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-item__idx {
  color: var(--cyan);
  font-size: 12px;
  padding-top: 4px;
}

.page-faq .faq-item__mark {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid var(--steel);
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .faq-item__mark::before {
  left: 50%;
  top: 4px;
  bottom: 4px;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .faq-item__mark::after {
  top: 50%;
  left: 4px;
  right: 4px;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-item__mark {
  border-color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  display: none;
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
}

.page-faq .faq-item__body p {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--grid);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 242, 200, 0.4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--paper);
  outline: none;
}

/* ---------- 周期对照 ---------- */
.page-faq .cycle-figure {
  margin: 18px 0 20px;
  padding: 12px 10px 8px;
  border: 2px solid var(--grid);
  background: linear-gradient(180deg, var(--ink-800), var(--panel-2));
}

.page-faq .cycle-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .cycle-figure__caption {
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--steel);
}

.page-faq .pair-list {
  display: grid;
  gap: 0;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--grid);
  background: var(--ink-800);
}

.page-faq .pair-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 15px;
  border-bottom: 1px solid var(--grid);
  font-size: 14px;
}

.page-faq .pair-list li:last-child {
  border-bottom: 0;
}

.page-faq .pair-list__k {
  color: var(--muted);
}

.page-faq .pair-list__v {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--cyan);
  text-align: right;
}

/* ---------- 查询步骤 ---------- */
.page-faq .path-steps {
  display: grid;
  gap: 10px;
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .path-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--grid);
  border-left: 3px solid var(--cyan);
  background: var(--panel-2);
}

.page-faq .path-steps__n {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .path-steps h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .path-steps p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 准备清单 ---------- */
.page-faq .check-card {
  margin: 18px 0 20px;
  padding: 16px;
  border: 2px solid var(--grid);
  background: linear-gradient(160deg, var(--panel) 0%, var(--ink-800) 100%);
  box-shadow: var(--faq-hard);
}

.page-faq .check-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.page-faq .check-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .check-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .check-list li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .check-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 7px;
  flex: none;
  background: var(--cyan);
}

.page-faq .copy-btn {
  padding: 7px 13px;
  border: 2px solid var(--cyan);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--cyan);
  color: var(--ink-900);
  outline: none;
}

.page-faq .copy-btn[data-copied] {
  border-color: var(--amber);
  color: var(--amber);
  background: transparent;
}

/* ---------- 联系方式 ---------- */
.page-faq .contact-card {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding: 15px;
  border: 2px solid var(--grid);
  background: var(--ink-800);
}

.page-faq .contact-card__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  font-size: 13.5px;
}

.page-faq .contact-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .contact-card__value {
  color: var(--paper);
  word-break: break-all;
}

.page-faq .contact-card__value--text {
  grid-column: 2;
  color: var(--muted);
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 20px 0 4px;
  overflow: hidden;
  border: 2px solid var(--grid);
  background: var(--panel-2);
}

.page-faq .faq-figure--wide {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure--check {
  aspect-ratio: 10 / 7;
}

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

.page-faq .faq-figure__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  background: linear-gradient(180deg, rgba(6, 26, 20, 0) 0%, rgba(6, 26, 20, 0.92) 55%);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--paper);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .tier-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-item > summary {
    padding: 17px 20px;
    font-size: 15.5px;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 18px;
  }

  .page-faq .contact-card__row {
    grid-template-columns: 48px minmax(0, 1fr) auto;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    margin: 26px 0 44px;
    padding: 38px 44px 40px;
  }

  .page-faq .faq-hero .lede {
    font-size: 16.5px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
    padding: 18px 16px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-faq .faq-index__link {
    padding: 11px 12px;
  }

  .page-faq .faq-block {
    margin-bottom: 60px;
  }

  .page-faq .faq-block__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__jump a,
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .copy-btn,
  .page-faq .faq-link {
    transition: none;
  }
}