.page-faq {
  --faq-max: 74ch;
  background: var(--paper);
  color: var(--rock);
  font-family: var(--sans);
  line-height: 1.8;
  overflow-x: hidden;
}

.page-faq .wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  background: var(--indigo);
  color: var(--cream);
  padding: clamp(26px, 4vw, 54px) 0 clamp(44px, 7vw, 92px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(620px 320px at 88% 8%, rgba(242, 140, 40, 0.22), transparent 70%),
    radial-gradient(520px 300px at 4% 96%, rgba(46, 139, 122, 0.2), transparent 72%);
  pointer-events: none;
}

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

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 38px);
  padding: 0;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.page-faq .breadcrumb a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: currentColor;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-inline: 0.5rem 0.35rem;
  color: rgba(246, 241, 231, 0.4);
}

.page-faq .breadcrumb li[aria-current] {
  color: rgba(246, 241, 231, 0.72);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(1.9rem, 5.6vw, 3.9rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 54ch;
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-size: clamp(0.97rem, 1.4vw, 1.08rem);
  color: rgba(246, 241, 231, 0.82);
}

.page-faq .faq-index {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  border: var(--line) solid rgba(246, 241, 231, 0.26);
  background: rgba(11, 15, 26, 0.42);
  color: var(--cream);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  border-color: var(--orange);
  background: rgba(242, 140, 40, 0.14);
  transform: translate(-2px, -2px);
}

.page-faq .faq-index__num {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-index__text {
  font-weight: 700;
  font-size: 0.98rem;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: var(--line) solid var(--ink);
  box-shadow: var(--shadow);
  background: var(--indigo-l);
  overflow: hidden;
}

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

.page-faq .faq-hero__cap {
  padding: 12px 14px;
  border-top: 1px solid rgba(246, 241, 231, 0.2);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: rgba(246, 241, 231, 0.72);
}

/* ---------- 通用区块 ---------- */

.page-faq .faq-block {
  padding: clamp(46px, 7vw, 92px) 0;
  scroll-margin-top: 92px;
}

.page-faq .faq-block--paper {
  background: var(--paper);
}

.page-faq .faq-block--cream {
  background: var(--cream);
}

.page-faq .faq-block--dark {
  background: var(--indigo);
  color: var(--cream);
}

.page-faq .faq-block__head {
  max-width: var(--faq-max);
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-faq .faq-block__head h2 {
  margin: 10px 0 10px;
  font-size: clamp(1.5rem, 3.2vw, 2.35rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--indigo);
}

.page-faq .faq-block--dark .faq-block__head h2 {
  color: var(--paper);
}

.page-faq .faq-block__intro {
  margin: 0;
  font-size: 1rem;
  color: var(--rock);
}

.page-faq .faq-block--dark .faq-block__intro {
  color: rgba(246, 241, 231, 0.82);
}

.page-faq .faq-block__foot {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: clamp(10px, 1.6vw, 16px);
  max-width: 940px;
}

.page-faq .faq-item {
  border: var(--line) solid var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.22s var(--ease);
}

.page-faq .faq-block--cream .faq-item {
  background: var(--paper);
}

.page-faq .faq-item[open] {
  box-shadow: var(--shadow);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 15px clamp(13px, 2vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: -3px;
}

.page-faq .faq-item__code {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--cream);
  background: var(--indigo);
  padding: 3px 7px;
  white-space: nowrap;
}

.page-faq .faq-item__q {
  font-weight: 700;
  font-size: clamp(0.96rem, 1.6vw, 1.06rem);
  line-height: 1.55;
  color: var(--indigo);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--orange);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 3px;
}

.page-faq .faq-item__mark::after {
  left: 8px;
  top: 0;
  width: 3px;
  height: 18px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 clamp(13px, 2vw, 22px) clamp(16px, 2vw, 22px);
  border-top: 1px dashed rgba(59, 63, 70, 0.3);
}

.page-faq .faq-item__answer {
  margin: 16px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--jade);
  font-weight: 600;
  color: var(--indigo);
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 34px;
  font-size: 0.95rem;
  color: var(--rock);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.32em;
  padding: 2px 5px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--cream);
  background: var(--moss);
}

/* ---------- 快速排查 ---------- */

.page-faq .faq-check__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .faq-check__side h2 {
  margin: 10px 0 12px;
  font-size: clamp(1.5rem, 3.2vw, 2.35rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-check__intro {
  max-width: 46ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: rgba(246, 241, 231, 0.82);
}

.page-faq .faq-check__figure {
  margin: 0;
  border: var(--line) solid var(--ink);
  box-shadow: 6px 6px 0 rgba(11, 15, 26, 0.85);
  background: var(--indigo-l);
  overflow: hidden;
}

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

.page-faq .faq-check__cap {
  padding: 11px 14px;
  border-top: 1px solid rgba(246, 241, 231, 0.2);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: rgba(246, 241, 231, 0.7);
}

.page-faq .faq-path {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-path li {
  position: relative;
  padding: 18px 0 18px 46px;
  border-bottom: 1px solid rgba(246, 241, 231, 0.16);
}

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

.page-faq .faq-path .node-mark {
  position: absolute;
  left: 0;
  top: 26px;
  width: 14px;
  height: 14px;
  background: var(--jade);
  border: 2px solid rgba(246, 241, 231, 0.45);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.page-faq .faq-path li.is-lit .node-mark {
  background: var(--orange);
  border-color: var(--orange);
  transform: scale(1.15);
}

.page-faq .faq-path h3 {
  margin: 0 0 6px;
  font-size: 1.06rem;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-path p {
  margin: 0;
  font-size: 0.95rem;
  color: rgba(246, 241, 231, 0.78);
}

/* ---------- 联系 ---------- */

.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

.page-faq .faq-contact__panel {
  padding: clamp(16px, 2.4vw, 26px);
  border: var(--line) solid var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-contact__panel h3 {
  margin: 0 0 10px;
  font-size: 1.14rem;
  font-weight: 900;
  color: var(--indigo);
}

.page-faq .faq-contact__text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--rock);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed rgba(59, 63, 70, 0.3);
}

.page-faq .faq-contact__row .contact-value {
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: var(--indigo);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact .copy-btn {
  padding: 6px 10px;
  border: 2px solid var(--ink);
  background: var(--orange);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease), background 0.15s var(--ease);
}

.page-faq .faq-contact .copy-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--ink);
}

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

.page-faq .faq-contact .copy-btn.is-copied {
  background: var(--jade);
  color: var(--cream);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-check__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__copy {
    padding-top: 12px;
  }

  .page-faq .faq-hero__figure {
    transform: translateY(14px);
  }

  .page-faq .faq-path li:nth-child(even) {
    transform: translateX(18px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-faq .faq-hero__figure,
  .page-faq .faq-path li:nth-child(even) {
    transform: none;
  }
}