.page-faq {
  --faq-hair: 1px solid var(--ink-line);
  --faq-block: clamp(2.75rem, 7vw, 5.5rem);
  display: block;
  color: var(--text-body);
}

.page-faq a {
  color: var(--text-title);
  text-decoration-color: var(--teal-line);
  text-underline-offset: 0.25em;
}

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

.page-faq .crumbs {
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  font-size: var(--fs-14);
}

.page-faq section[id] {
  scroll-margin-top: 6rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding: clamp(2rem, 6vw, 4rem) 0 clamp(2.25rem, 5vw, 3.5rem);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -22%;
  right: -14%;
  width: clamp(220px, 44vw, 520px);
  aspect-ratio: 1 / 1;
  background: linear-gradient(140deg, var(--violet-soft), transparent 70%);
  border-radius: 42% 58% 50% 50%;
  transform: rotate(14deg);
  pointer-events: none;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 1rem;
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-faq .faq-hero__title {
  margin: 0 0 1.15rem;
  font-family: var(--font-narrow);
  font-size: var(--fs-h1);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-title);
}

.page-faq .faq-hero__lead {
  max-width: 34em;
  margin: 0;
  color: var(--text-body);
  font-size: var(--fs-16);
  line-height: 1.85;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--ink-line);
  border-radius: var(--pill);
  color: var(--text-muted);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--teal);
  border-color: var(--teal-line);
}

.page-faq .faq-hero__panel {
  padding: clamp(1.25rem, 3.2vw, 2rem);
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--teal);
}

.page-faq .faq-hero__panel-title {
  margin: 0.6rem 0 0;
  font-family: var(--font-narrow);
  font-size: var(--fs-28);
  font-weight: 300;
  color: var(--text-title);
}

.page-faq .faq-stats {
  display: grid;
  gap: 0.9rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.9rem;
  border-bottom: var(--faq-hair);
}

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

.page-faq .faq-stats__num {
  flex: none;
  font-size: var(--fs-40);
  line-height: 1;
  font-weight: 300;
  color: var(--teal);
}

.page-faq .faq-stats__label {
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--text-muted);
}

.page-faq .faq-hero__panel-note {
  margin: 1.35rem 0 0;
  padding-top: 1.1rem;
  border-top: var(--faq-hair);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-muted);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  padding-block: var(--faq-block);
  border-top: var(--faq-hair);
}

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

.page-faq .section__index {
  margin: 0 0 0.7rem;
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  color: var(--teal);
}

.page-faq .section__title {
  margin: 0 0 0.8rem;
  font-family: var(--font-narrow);
  font-size: var(--fs-h2);
  font-weight: 300;
  line-height: 1.16;
  color: var(--text-title);
}

.page-faq .section__note {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--fs-14);
  line-height: 1.8;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-filter {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .filter-btn {
  flex: none;
  appearance: none;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--ink-line);
  border-radius: var(--pill);
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: var(--fs-14);
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .filter-btn:hover {
  color: var(--text-title);
  border-color: var(--teal-line);
}

.page-faq .filter-btn[aria-pressed="true"] {
  color: var(--teal);
  border-color: var(--teal-line);
  background: var(--teal-soft);
}

.page-faq .doc-index {
  display: grid;
  border-top: var(--faq-hair);
}

.page-faq .doc-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.3rem 0.9rem;
  align-items: baseline;
  padding: 1.15rem 0;
  border-bottom: var(--faq-hair);
}

.page-faq .doc-item__num {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-faq .doc-item__title {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--text-title);
}

.page-faq .doc-item__count {
  font-size: var(--fs-12);
  color: var(--text-body);
  white-space: nowrap;
}

.page-faq .doc-item__desc {
  grid-column: 2 / 4;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-faq .faq-empty {
  margin: 1.25rem 0 0;
  padding: 0.9rem 1.1rem;
  border: 1px dashed var(--ink-line);
  border-radius: var(--radius-md);
  font-size: var(--fs-14);
  color: var(--text-muted);
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-media {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
}

.page-faq .media__frame {
  overflow: hidden;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-lg);
  background: var(--ink-panel);
}

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

.page-faq .media__caption {
  margin: 0.75rem 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 三步备份 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: clamp(1.25rem, 4vw, 2.75rem);
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.4rem 1.25rem;
  padding: clamp(1.35rem, 3.5vw, 2.25rem);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-lg);
  background: var(--ink-panel);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-steps .step__num {
  font-size: clamp(2.25rem, 6vw, 3.25rem);
  line-height: 0.9;
  font-weight: 300;
  color: var(--text-muted);
}

.page-faq .faq-steps .step__title {
  margin: 0 0 0.55rem;
  font-size: var(--fs-20);
  font-weight: 500;
  color: var(--text-title);
}

.page-faq .faq-steps .step__text {
  max-width: 38em;
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--text-body);
}

.page-faq .faq-steps .step__hint {
  max-width: 38em;
  margin: 0.9rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--amber-line);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-faq .faq-steps .step[data-done] {
  border-color: var(--teal-line);
  background: linear-gradient(180deg, var(--teal-soft), transparent 72%), var(--ink-panel);
}

.page-faq .faq-steps .step[data-done] .step__num {
  color: var(--teal);
}

/* ---------- 地址校验 ---------- */
.page-faq .faq-check {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-check__p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-body);
}

.page-faq .faq-addr {
  display: grid;
  gap: 0.85rem;
  margin: 1.5rem 0 0;
  padding: clamp(1rem, 2.5vw, 1.4rem);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  background: var(--plate-soft);
}

.page-faq .faq-addr__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.9rem;
}

.page-faq .faq-addr__label {
  min-width: 3.5rem;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.page-faq .faq-addr__note {
  margin: 1rem 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .code {
  display: inline-block;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 224, 184, 0.08);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.02em;
}

.page-faq .code--copy {
  border: 1px solid var(--teal-line);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .code--copy:hover,
.page-faq .code--copy:focus-visible {
  background: var(--teal-soft);
  border-color: var(--teal);
}

.page-faq .faq-callout {
  margin-top: 1.5rem;
}

/* ---------- 切链余额 ---------- */
.page-faq .faq-chain {
  display: grid;
  gap: 0;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--faq-hair);
}

.page-faq .faq-chain > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.3rem 1.1rem;
  padding: 1.15rem 0;
  border-bottom: var(--faq-hair);
}

.page-faq .faq-chain__num {
  padding-top: 0.15rem;
  font-size: var(--fs-14);
  color: var(--teal);
}

.page-faq .faq-chain__title {
  margin: 0 0 0.3rem;
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--text-title);
}

.page-faq .faq-chain__text {
  max-width: 38em;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-body);
}

.page-faq .faq-note {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding: clamp(1rem, 2.5vw, 1.5rem);
  border-color: var(--amber-line);
  background: var(--amber-soft);
}

.page-faq .faq-note__text {
  max-width: 40em;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-body);
}

/* ---------- 文档入口 ---------- */
.page-faq .faq-entry {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-faq .faq-entry__p {
  max-width: 38em;
  margin: 0 0 1.1rem;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-body);
}

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

.page-faq .faq-entry__panel {
  padding: clamp(1.15rem, 3vw, 1.75rem);
}

.page-faq .faq-entry__panel-title {
  margin: 0 0 1rem;
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--teal);
}

.page-faq .faq-entry__list {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-entry__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-body);
}

.page-faq .faq-entry__dot {
  color: var(--teal);
  font-family: var(--font-mono);
}

.page-faq .faq-entry__link {
  margin-top: 1.35rem;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-faq .disclosure {
  padding: 0 1.15rem;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  background: var(--ink-panel);
  transition: border-color var(--dur) var(--ease);
}

.page-faq .disclosure[open] {
  border-color: var(--teal-line);
}

.page-faq .disclosure summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--text-title);
}

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

.page-faq .disclosure summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--teal);
}

.page-faq .disclosure[open] summary::after {
  content: "−";
}

.page-faq .faq-q__text {
  display: block;
}

.page-faq .disclosure__body {
  padding: 0 0 1.2rem;
}

.page-faq .disclosure__body p {
  max-width: 38em;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-body);
}

.page-faq .faq-boundary {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 0;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--faq-hair);
}

.page-faq .faq-next li {
  border-bottom: var(--faq-hair);
}

.page-faq .faq-next a {
  display: block;
  padding: 1.15rem 0;
  font-family: var(--font-narrow);
  font-size: var(--fs-20);
  font-weight: 300;
  color: var(--text-title);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-next a span {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-sans);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-muted);
}

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

.page-faq .faq-next a:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-faq .faq-hero__panel {
    margin-bottom: -1.75rem;
  }

  .page-faq .doc-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(2rem, 5vw, 4rem);
  }

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

  .page-faq .faq-entry {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
    align-items: start;
  }

  .page-faq .faq-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-steps .step__num {
    padding-top: 0.15rem;
  }
}

@media (max-width: 420px) {
  .page-faq .doc-item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .doc-item__count {
    grid-column: 2 / 3;
    justify-self: start;
  }

  .page-faq .doc-item__desc {
    grid-column: 1 / 3;
  }
}

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