.page-faq {
  --faq-line: rgba(14, 74, 95, 0.14);
  --faq-line-light: rgba(127, 179, 196, 0.22);
  background: var(--paper);
  color: var(--graphite);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-top: calc(var(--hdr-h) + 40px);
  padding-bottom: 44px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--faq-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.35) 60%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.35) 60%, transparent 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero__spine {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--mist);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(42px, 9vw, 82px);
  line-height: 1.03;
  letter-spacing: 0.01em;
  color: var(--blue-700);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 30em;
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1.1;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-stat__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue-700);
}

.page-faq .faq-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--edge);
  background: var(--fog);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.page-faq .faq-figure:hover img {
  transform: scale(1.03);
}

.page-faq .faq-figure__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 12px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

/* ---------- 高频速查 ---------- */

.page-faq .faq-quick {
  padding-top: 6px;
  padding-bottom: 52px;
}

.page-faq .faq-quick__head {
  max-width: 36em;
  margin-bottom: 24px;
}

.page-faq .faq-quick__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.24;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-quick__intro {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--blue-700);
}

.page-faq .faq-quick__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--edge);
  border: 1px solid var(--edge);
}

.page-faq .faq-quick__item {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 18px;
  background: var(--paper);
}

.page-faq .faq-quick__no {
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--green);
}

.page-faq .faq-quick__no::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 20px;
  height: 2px;
  background: var(--lime);
}

.page-faq .faq-quick__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.55;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-quick__item p {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 分组索引 ---------- */

.page-faq .faq-groups {
  position: relative;
  padding-top: 8px;
  padding-bottom: 56px;
}

.page-faq .faq-groups__head {
  max-width: 34em;
  margin-bottom: 22px;
}

.page-faq .faq-groups__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.24;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-tabs__list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--edge);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-tabs__tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 14px 12px;
  border: 0;
  cursor: pointer;
  background: var(--fog);
  color: var(--blue-700);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: background 0.24s var(--ease), color 0.24s var(--ease);
}

.page-faq .faq-tabs__tab:hover {
  background: var(--mist);
  color: var(--ink-900);
}

.page-faq .faq-tabs__tab:focus-visible {
  outline: 2px solid var(--ink-900);
  outline-offset: -4px;
}

.page-faq .faq-tabs__tab[aria-selected="true"] {
  background: var(--ink-900);
  color: var(--paper);
  box-shadow: inset 0 -3px 0 var(--lime);
}

.page-faq .faq-tabs__tab[aria-selected="true"]:hover {
  background: var(--ink-900);
  color: var(--paper);
}

.page-faq .faq-tabs__no {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-faq .faq-tabs__tab[aria-selected="true"] .faq-tabs__no {
  color: var(--lime);
}

.page-faq .faq-tabs__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--blue-700);
  opacity: 0.7;
}

.page-faq .faq-tabs__tab[aria-selected="true"] .faq-tabs__count {
  color: var(--mist);
  opacity: 1;
}

.page-faq .faq-panel {
  padding-top: 22px;
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-panel__intro {
  margin: 0 0 16px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--blue-700);
}

/* ---------- 问题条目 ---------- */

.page-faq .faq-item {
  border-bottom: 1px solid var(--edge);
  background: var(--paper);
}

.page-faq .faq-item__head {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 22px;
  align-items: start;
  gap: 10px;
  padding: 17px 2px 17px 0;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s var(--ease);
}

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

.page-faq .faq-item__head::marker {
  content: "";
}

.page-faq .faq-item__head:hover {
  background: rgba(215, 227, 232, 0.4);
}

.page-faq .faq-item__head:focus-visible {
  outline: 2px solid var(--blue-700);
  outline-offset: -2px;
}

.page-faq .faq-q-no {
  padding-top: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-q-no {
  color: var(--green);
}

.page-faq .faq-item__q {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--graphite);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--ink-900);
}

.page-faq .faq-item__sign {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--edge);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--blue-700);
}

.page-faq .faq-item__sign::before {
  left: 50%;
  top: 4px;
  bottom: 4px;
  width: 1px;
  transform: translateX(-50%);
}

.page-faq .faq-item__sign::after {
  top: 50%;
  left: 4px;
  right: 4px;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-item__sign {
  transform: rotate(45deg);
  border-color: var(--green);
}

.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--green);
}

.page-faq .faq-item__body {
  padding: 0 8px 22px 58px;
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps > li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
  counter-increment: faqstep;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--blue-700);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 20px;
  text-align: center;
}

.page-faq .faq-item__links {
  margin: 12px 0 0;
  padding-left: 30px;
}

.page-faq .faq-item__links a {
  font-size: 14px;
  color: var(--blue-700);
  text-decoration: none;
  border-bottom: 1px solid var(--mist);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-item__links a:hover {
  color: var(--ink-900);
  border-color: var(--lime);
}

.page-faq .faq-item__links a:focus-visible {
  outline: 2px solid var(--blue-700);
  outline-offset: 2px;
}

.page-faq .faq-panel__figure {
  margin: 22px 0 0;
  border: 1px solid var(--edge);
  background: var(--fog);
  overflow: hidden;
}

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

.page-faq .faq-panel__figure figcaption {
  padding: 9px 12px;
  background: var(--fog);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--blue-700);
}

.page-faq .faq-ticks {
  height: 8px;
  margin-top: 22px;
  border-top: 1px solid var(--edge);
  background-image: repeating-linear-gradient(90deg, var(--edge) 0 1px, transparent 1px 24px);
  background-repeat: repeat-x;
  background-size: 100% 8px;
}

/* ---------- 求助面板 ---------- */

.page-faq .faq-help {
  padding-bottom: 64px;
}

.page-faq .faq-help__panel {
  position: relative;
  padding: 32px 20px 36px;
  background: var(--ink-900);
  color: var(--paper);
  border-top: 2px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-faq .faq-help__lead {
  max-width: 40em;
}

.page-faq .faq-help .eyebrow--light {
  color: var(--mist);
}

.page-faq .faq-help h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.22;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-help__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog);
}

.page-faq .faq-help__cols {
  display: grid;
  gap: 30px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--faq-line-light);
}

.page-faq .faq-help h3 {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  font-weight: 500;
  color: var(--lime);
}

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

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 1px;
  background: var(--lime);
}

.page-faq .faq-help__contact li {
  display: grid;
  gap: 2px;
}

.page-faq .faq-help__contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-help__contact-value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 18px 0 20px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-help__cta {
  display: inline-block;
}

.page-faq .faq-help__cta:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--hdr-h) + 56px);
    padding-bottom: 56px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-hero__spine {
    display: block;
    position: absolute;
    left: 0;
    top: 6px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .page-faq .faq-hero__lead {
    position: relative;
    padding-left: 44px;
  }

  .page-faq .faq-figure {
    margin-top: 26px;
  }

  .page-faq .faq-quick__item {
    grid-template-columns: 94px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
    padding: 24px 26px;
  }

  .page-faq .faq-tabs__tab {
    font-size: 14px;
    padding: 14px 18px 13px;
  }

  .page-faq .faq-item__head {
    grid-template-columns: 64px minmax(0, 1fr) 24px;
    gap: 14px;
    padding: 19px 4px 19px 0;
  }

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

  .page-faq .faq-item__body {
    padding: 0 24px 24px 78px;
  }

  .page-faq .faq-steps > li {
    font-size: 15px;
  }

  .page-faq .faq-help__panel {
    padding: 44px 40px 48px;
  }

  .page-faq .faq-help__cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__stats {
    gap: 18px 44px;
  }

  .page-faq .faq-quick {
    padding-bottom: 64px;
  }

  .page-faq .faq-panel__figure {
    max-width: 560px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-figure img,
  .page-faq .faq-item__sign,
  .page-faq .faq-tabs__tab,
  .page-faq .faq-item__head {
    transition: none;
  }

  .page-faq .faq-figure:hover img {
    transform: none;
  }
}