.page-faq {
  --faq-gap: clamp(16px, 2.6vw, 28px);
  --faq-line: rgba(246, 241, 231, .14);
  --faq-soft: rgba(246, 241, 231, .78);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.5vw, 48px) 0 clamp(38px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 84% 4%, rgba(255, 77, 46, .24), transparent 58%),
    radial-gradient(90% 80% at 2% 96%, rgba(46, 196, 182, .16), transparent 62%),
    var(--night);
  border-bottom: var(--frame) solid var(--ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(115deg, transparent 0 26px, rgba(246, 241, 231, .045) 26px 27px);
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 68px);
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--chalk);
  text-wrap: balance;
}

.page-faq .faq-hero__title span {
  display: block;
  color: var(--signal);
  transform: skewX(-6deg);
  transform-origin: left center;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  color: var(--faq-soft);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
}

.page-faq .faq-hero__panel {
  align-self: start;
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--frame) solid var(--ink);
  background: var(--plateau);
  box-shadow: var(--hard);
}

.page-faq .faq-hero__panel-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--lake);
}

.page-faq .faq-hero__panel-text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-hero__panel-mail {
  margin: 14px 0 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  word-break: break-all;
  color: var(--chalk);
  border-bottom: 2px solid var(--signal);
  display: inline-block;
  padding-bottom: 3px;
}

/* ============ 场景磁贴 ============ */
.page-faq .faq-tiles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-tile {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--frame) solid var(--ink);
  background: var(--plateau);
  color: var(--chalk);
  text-decoration: none;
  box-shadow: var(--hard);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-tile:hover,
.page-faq .faq-tile:focus-visible {
  transform: translate(-3px, -3px);
  border-color: var(--signal);
  box-shadow: 11px 11px 0 rgba(255, 77, 46, .34);
}

.page-faq .faq-tile:focus-visible {
  outline: 3px solid var(--lake);
  outline-offset: 3px;
}

.page-faq .faq-tile__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--signal);
}

.page-faq .faq-tile__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 25px);
  font-weight: 800;
  line-height: 1.18;
  color: var(--chalk);
}

.page-faq .faq-tile__desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-tile__go {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--lake);
}

/* ============ 问答两组布局 ============ */
.page-faq .qa-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .qa-index {
  border-left: var(--frame) solid var(--signal);
  padding-left: 14px;
}

.page-faq .qa-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lake);
}

.page-faq .qa-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-faq .qa-index__link {
  display: block;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--faq-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa-index__link:hover,
.page-faq .qa-index__link:focus-visible {
  color: var(--chalk);
  border-color: var(--signal);
}

.page-faq .qa-index__link:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
}

.page-faq .qa-stack {
  min-width: 0;
}

/* ============ 手风琴 ============ */
.page-faq .qa {
  border: var(--frame) solid var(--ink);
  background: var(--night);
  color: var(--chalk);
  box-shadow: var(--hard);
  margin-bottom: clamp(14px, 2vw, 20px);
}

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

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(14px, 2vw, 20px) clamp(15px, 2.3vw, 24px);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--chalk);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa__summary:hover {
  color: var(--ember);
}

.page-faq .qa__summary:focus-visible {
  outline: 3px solid var(--lake);
  outline-offset: -3px;
}

.page-faq .qa__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--signal);
  transition: transform var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__summary::after {
  content: "–";
  transform: rotate(180deg);
}

.page-faq .qa__no {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 24px;
  padding: 0 6px;
  margin-top: 2px;
  background: var(--signal);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  transform: skewX(-8deg);
}

.page-faq .qa__body {
  padding: 0 clamp(15px, 2.3vw, 24px) clamp(16px, 2.3vw, 22px);
  border-top: 1px solid var(--faq-line);
  padding-top: clamp(14px, 2vw, 18px);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-soft);
}

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

/* ============ 更新节奏表 ============ */
.page-faq .qa-updates {
  margin-top: clamp(26px, 4vw, 44px);
  padding: clamp(16px, 2.4vw, 26px);
  border: var(--frame) solid var(--ink);
  background: var(--night);
  box-shadow: var(--hard);
}

.page-faq .qa-updates__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  color: var(--chalk);
}

.page-faq .table-wrap {
  overflow-x: auto;
}

.page-faq .data-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
  color: var(--chalk);
  font-variant-numeric: tabular-nums;
}

.page-faq .data-table th,
.page-faq .data-table td {
  text-align: left;
  padding: 12px;
  vertical-align: top;
  border-bottom: 1px solid var(--faq-line);
  line-height: 1.7;
}

.page-faq .data-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lake);
  border-bottom: 2px solid var(--signal);
}

.page-faq .data-table tbody td:first-child {
  font-weight: 700;
  color: var(--chalk);
}

.page-faq .data-table tbody td:nth-child(2) {
  color: var(--faq-soft);
}

.page-faq .data-table tbody td:last-child {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--grass);
  white-space: nowrap;
}

.page-faq .data-table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .qa-updates__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .qa-updates__note a {
  color: var(--lake);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-updates__note a:hover {
  color: var(--ember);
}

/* ============ 联系区 ============ */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 40px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .contact-card {
  padding: clamp(18px, 2.8vw, 30px);
  border: var(--frame) solid var(--ink);
  background: var(--cream);
  color: var(--ink);
  box-shadow: var(--hard);
}

.page-faq .contact-card__lead {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .contact-rows {
  margin: 0;
  border-top: 2px solid var(--ink);
}

.page-faq .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(26, 18, 14, .22);
}

.page-faq .contact-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(26, 18, 14, .68);
}

.page-faq .contact-row dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-faq .contact-val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.8vw, 16px);
  font-weight: 700;
  word-break: break-word;
  color: var(--ink);
}

.page-faq .copy-btn {
  padding: 5px 10px;
  border: 2px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .copy-btn:hover {
  background: var(--ink);
  color: var(--cream);
}

.page-faq .copy-btn:focus-visible {
  outline: 3px solid var(--lake);
  outline-offset: 2px;
}

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

.page-faq .contact-card__tip {
  margin: 18px 0 22px;
  padding: 12px 14px;
  border-left: var(--frame) solid var(--signal);
  background: rgba(7, 20, 38, .07);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-contact__side {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.6vw, 26px);
}

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

.page-faq .faq-more {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-more li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 13px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-more a {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--chalk);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  color: var(--signal);
}

.page-faq .faq-more a:focus-visible {
  outline: 3px solid var(--lake);
  outline-offset: 3px;
}

.page-faq .faq-more span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-soft);
}

/* ============ 断点 ============ */
@media (min-width: 700px) {
  .page-faq .faq-tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .contact-row {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, .85fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .qa-layout {
    grid-template-columns: minmax(0, 236px) minmax(0, 1fr);
    gap: clamp(26px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .qa-index {
    position: sticky;
    top: calc(var(--bar-h) + 22px);
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-tiles {
    gap: clamp(20px, 2.4vw, 30px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tile,
  .page-faq .qa__summary,
  .page-faq .qa__summary::after,
  .page-faq .qa-index__link,
  .page-faq .copy-btn,
  .page-faq .faq-more a {
    transition: none;
  }

  .page-faq .faq-hero__title span {
    transform: none;
  }

  .page-faq .faq-tile:hover,
  .page-faq .faq-tile:focus-visible {
    transform: none;
  }
}