.page-faq {
  --faq-hair: var(--z9-line);
  --faq-answer-ink: var(--z9-brown);
  display: block;
  padding-bottom: 88px;
  color: var(--z9-paper);
  background: var(--z9-ink);
  font-family: var(--z9-font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 36px;
  border-bottom: 1px solid var(--faq-hair);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 108px;
  height: 2px;
  background: linear-gradient(90deg, var(--z9-cyan), var(--z9-orange), var(--z9-brick));
}
.page-faq .faq-hero__eyebrow {
  margin-top: 28px;
  color: var(--z9-mist);
}
.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--z9-font-display);
  font-size: clamp(40px, 9vw, 76px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: 0.01em;
  color: var(--z9-paper);
}
.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(242, 233, 216, 0.82);
}

.page-faq .faq-jump {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
}
.page-faq .faq-jump__cell {
  min-width: 0;
}
.page-faq .faq-jump__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  background: var(--z9-ink);
  color: var(--z9-paper);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: background 240ms var(--z9-ease), color 240ms var(--z9-ease);
}
.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: #10241e;
  color: var(--z9-cyan);
}
.page-faq .faq-jump__idx {
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--z9-brick);
}

/* ---------- 区块标题 ---------- */
.page-faq .faq-scope {
  padding: clamp(40px, 6vw, 64px) 0 clamp(24px, 4vw, 40px);
}
.page-faq .faq-sec-head {
  padding-top: 16px;
  border-top: 1px solid var(--faq-hair);
}
.page-faq .faq-sec-kicker {
  margin: 0;
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--z9-mist);
}
.page-faq .faq-sec-title {
  margin: 10px 0 0;
  font-family: var(--z9-font-display);
  font-size: clamp(24px, 4.5vw, 34px);
  font-weight: 900;
  line-height: 1.12;
  color: var(--z9-paper);
}
.page-faq .faq-sec-note {
  margin: 12px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--z9-mist);
}

/* ---------- 支持范围四栏 ---------- */
.page-faq .faq-scope__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 32px;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
}
.page-faq .faq-scope__item {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  background: var(--z9-ink);
}
.page-faq .faq-scope__no {
  align-self: flex-start;
  padding: 2px 7px;
  border: 1px solid var(--z9-brick);
  color: var(--z9-brick);
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transform: rotate(-2deg);
}
.page-faq .faq-scope__title {
  margin: 0;
  font-family: var(--z9-font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--z9-paper);
}
.page-faq .faq-scope__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 233, 216, 0.76);
}
.page-faq .faq-scope__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--z9-orange);
  color: var(--z9-orange);
  font-size: 14px;
  text-decoration: none;
  transition: color 240ms var(--z9-ease), border-color 240ms var(--z9-ease);
}
.page-faq .faq-scope__link:hover,
.page-faq .faq-scope__link:focus-visible {
  color: var(--z9-cyan);
  border-color: var(--z9-cyan);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 28px;
  border-top: 1px solid var(--faq-hair);
}
.page-faq .faq-filters__label {
  width: 100%;
  margin: 0 0 6px;
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--z9-mist);
}
.page-faq .faq-chip {
  font-family: var(--z9-font-body);
  font-size: 14px;
  transition: color 200ms var(--z9-ease), border-color 200ms var(--z9-ease), background 200ms var(--z9-ease);
}
.page-faq .faq-chip[aria-pressed="true"] {
  border-color: var(--z9-cyan);
  color: var(--z9-cyan);
  background: rgba(59, 240, 200, 0.08);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  position: relative;
  padding: 34px 0 12px;
  border-top: 1px solid var(--faq-hair);
}
.page-faq .faq-group[data-filtered="off"] {
  display: none;
}
.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}
.page-faq .faq-group__no {
  flex: none;
  padding: 2px 8px;
  border: 1px solid var(--z9-cyan);
  color: var(--z9-cyan);
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transform: rotate(-1.5deg);
}
.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--z9-font-display);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--z9-paper);
}

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 26px;
}
.page-faq .faq-figure .z9-figure__media {
  border: 1px solid var(--faq-hair);
  overflow: hidden;
  background-color: #0d231c;
  background-image:
    linear-gradient(rgba(30, 58, 50, 0.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 50, 0.9) 1px, transparent 1px);
  background-size: 34px 34px;
}
.page-faq .faq-figure .z9-figure__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure--wide {
  max-width: 760px;
}
.page-faq .faq-figure--square {
  max-width: 420px;
  margin-left: 0;
}
.page-faq .faq-figure .z9-figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--z9-mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--faq-hair);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}
.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 18px;
  gap: 10px;
  align-items: start;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--z9-cyan);
  outline-offset: 3px;
}
.page-faq .faq-item__idx {
  padding-top: 4px;
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--z9-brick);
}
.page-faq .faq-item__text {
  font-size: 17px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--z9-paper);
  transition: color 200ms var(--z9-ease);
}
.page-faq .faq-item__q:hover .faq-item__text {
  color: var(--z9-cyan);
}
.page-faq .faq-item[open] .faq-item__text {
  color: var(--z9-cyan);
}
.page-faq .faq-item__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  justify-self: end;
}
.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--z9-mist);
  transition: transform 240ms var(--z9-ease), background 240ms var(--z9-ease);
}
.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}
.page-faq .faq-item__sign::after {
  top: 0;
  left: 6px;
  width: 1.5px;
  height: 14px;
}
.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--z9-cyan);
}
.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  margin: 0 0 20px;
  padding: 18px 20px;
  background: var(--z9-paper);
  border-left: 3px solid var(--z9-orange);
  box-shadow: var(--z9-shadow);
}
.page-faq .faq-item__a p {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-answer-ink);
}
.page-faq .faq-item__a a {
  color: var(--z9-brick);
  text-decoration: none;
  border-bottom: 1px solid var(--z9-brick);
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--z9-orange);
  border-color: var(--z9-orange);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(40px, 6vw, 64px);
  padding: clamp(28px, 4vw, 44px) clamp(20px, 4vw, 40px);
  border: 1px solid var(--faq-hair);
  background:
    linear-gradient(155deg, rgba(59, 240, 200, 0.08), rgba(255, 106, 43, 0.05) 55%, transparent 78%),
    var(--z9-brown);
}
.page-faq .faq-contact__kicker {
  margin: 0;
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--z9-mist);
}
.page-faq .faq-contact__title {
  margin: 12px 0 0;
  font-family: var(--z9-font-display);
  font-size: clamp(24px, 4.4vw, 36px);
  font-weight: 900;
  line-height: 1.12;
  color: var(--z9-paper);
}
.page-faq .faq-contact__text {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 233, 216, 0.8);
}
.page-faq .faq-contact__rows {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  background: var(--faq-hair);
  border-top: 1px solid var(--faq-hair);
  border-bottom: 1px solid var(--faq-hair);
}
.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin: 0;
  padding: 14px 0;
  background: transparent;
}
.page-faq .faq-contact__key {
  flex: none;
  min-width: 84px;
  font-family: var(--z9-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--z9-mist);
}
.page-faq .faq-contact__value {
  font-family: var(--z9-font-mono);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--z9-cyan);
}
.page-faq .faq-contact__plain {
  font-family: var(--z9-font-mono);
  font-size: 15px;
  color: var(--z9-paper);
}
.page-faq .faq-contact__btn {
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-scope__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-scope__item:nth-child(even) {
    padding-top: 40px;
  }
  .page-faq .faq-item__q {
    grid-template-columns: 64px minmax(0, 1fr) 24px;
    gap: 14px;
    padding: 22px 0;
  }
  .page-faq .faq-item__a {
    padding: 22px 28px;
  }
  .page-faq .faq-contact__rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-scope__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-body {
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-body .faq-figure {
    position: sticky;
    top: calc(var(--z9-notice-h) + 24px);
    margin-bottom: 0;
  }
  .page-faq .faq-contact__rows {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-scope__link,
  .page-faq .faq-item__text,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}