.page-faq {
  --faq-ink-soft: rgba(21, 19, 15, 0.78);
  --faq-line: rgba(27, 74, 58, 0.14);
  --faq-slate-line: rgba(110, 127, 141, 0.3);
  background: var(--paper);
  color: var(--ink);
}

.page-faq h2,
.page-faq h3 {
  font-family: var(--font-display);
  color: var(--ink-deep);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-deep);
  color: var(--on-deep);
  padding: clamp(6rem, 14vw, 9rem) 0 clamp(2.6rem, 6vw, 4rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 162, 74, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 74, 0.07) 1px, transparent 1px);
  background-size: 58px 58px;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

.page-faq .faq-hero__mark {
  display: none;
  margin: 0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.34em;
  color: var(--on-deep-soft);
}

.page-faq .faq-crumbs ol {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--on-deep-soft);
}

.page-faq .faq-crumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: rgba(201, 162, 74, 0.55);
}

.page-faq .faq-crumbs a {
  color: var(--gold-soft);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover {
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 0.55rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 6.4vw, 4.8rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper-bright);
  max-width: 13em;
}

.page-faq .faq-hero__lede {
  margin: 0 0 1.5rem;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.25vw, 1.12rem);
  line-height: 1.85;
  color: var(--on-deep);
}

.page-faq .faq-hero__signals {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
}

.page-faq .faq-hero__signals li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.34rem 0.82rem 0.34rem 0.62rem;
  border: 1px solid rgba(201, 162, 74, 0.4);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--gold-soft);
}

.page-faq .faq-hero__signals li::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--gold);
  flex: 0 0 auto;
}

.page-faq .faq-hero__figure {
  margin: clamp(0.6rem, 2vw, 1.4rem) 0 0;
}

/* ---------- 索引条 ---------- */

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

.page-faq .faq-index__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem 1.1rem;
  padding: clamp(1.2rem, 3vw, 1.8rem) 0;
}

.page-faq .faq-index__inner .eyebrow {
  flex: 0 0 auto;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.38rem 0.8rem;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: var(--paper-bright);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-index__list a:hover {
  border-color: var(--gold);
  color: var(--ink-deep);
  transform: translateY(-1px);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bronze);
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-block {
  position: relative;
  padding: clamp(2.6rem, 6vw, 4.6rem) 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-block__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 1.8rem);
}

.page-faq .faq-block__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-block__body > h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.22;
}

.page-faq .faq-block__lede {
  margin: 0 0 clamp(1.3rem, 3vw, 2rem);
  max-width: 38em;
  font-family: var(--font-body);
  font-size: clamp(0.98rem, 1.1vw, 1.06rem);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

/* ---------- 版本差异速查 ---------- */

.page-faq .faq-diff__graphic {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 0 0 clamp(1.3rem, 3vw, 1.9rem);
}

.page-faq .faq-diff__bar-a {
  fill: var(--ink-mid);
}

.page-faq .faq-diff__bar-b {
  fill: var(--gold);
}

.page-faq .faq-diff__bar-c {
  fill: var(--slate);
}

.page-faq .faq-diff {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2vw, 1.4rem);
}

.page-faq .faq-diff__item {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  background: var(--paper-bright);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
}

.page-faq .faq-diff__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.page-faq .faq-diff__item:nth-child(1)::before {
  background: linear-gradient(90deg, var(--ink-mid), rgba(27, 74, 58, 0));
}

.page-faq .faq-diff__item:nth-child(2)::before {
  background: linear-gradient(90deg, var(--gold), rgba(201, 162, 74, 0));
}

.page-faq .faq-diff__item:nth-child(3)::before {
  background: linear-gradient(90deg, var(--slate), rgba(110, 127, 141, 0));
}

.page-faq .faq-diff__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--bronze);
}

.page-faq .faq-diff__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-diff__list li {
  position: relative;
  padding-left: 1.1rem;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-diff__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.55rem;
  height: 1.5px;
  background: var(--bronze);
}

/* ---------- 折叠纸卡 ---------- */

.page-faq .faq-entries {
  display: grid;
  gap: 0.75rem;
}

.page-faq .faq-entry {
  background: var(--paper-bright);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-entry[open] {
  border-color: var(--line-gold);
  box-shadow: 0 12px 28px -22px rgba(13, 42, 34, 0.7);
}

.page-faq .faq-entry__summary {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr) 1.2rem;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s var(--ease);
}

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

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

.page-faq .faq-entry__summary:hover {
  background: rgba(201, 162, 74, 0.07);
}

.page-faq .faq-entry__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--bronze);
}

.page-faq .faq-entry__q {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(0.98rem, 1.1vw, 1.12rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-deep);
}

.page-faq .faq-entry__sign {
  position: relative;
  justify-self: end;
  align-self: center;
  width: 1.1rem;
  height: 1.1rem;
}

.page-faq .faq-entry__sign::before,
.page-faq .faq-entry__sign::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform 0.18s var(--ease);
}

.page-faq .faq-entry__sign::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-entry__sign::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-entry[open] .faq-entry__sign::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-entry__body {
  padding: 0 1.1rem 1.2rem calc(1.1rem + 2.4rem + 0.8rem);
}

.page-faq .faq-entry__body p {
  margin: 0 0 0.7rem;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-entry__body ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-entry__body li {
  position: relative;
  padding-left: 1.1rem;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-entry__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 0.55rem;
  height: 1.5px;
  background: var(--gold);
}

/* ---------- 平板栏目对照 ---------- */

.page-faq .faq-tablet {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 2.2rem);
}

.page-faq .faq-tablet__figure {
  margin: 0;
}

.page-faq .faq-tablet__entries {
  padding: clamp(0.9rem, 2.2vw, 1.5rem);
  border: 1px solid var(--faq-slate-line);
  border-left: 3px solid var(--slate);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(110, 127, 141, 0.12), rgba(110, 127, 141, 0.04));
  display: grid;
  gap: 0.75rem;
}

.page-faq .faq-tablet__entries .faq-entry {
  background: var(--paper-bright);
}

/* ---------- 联系面板 ---------- */

.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  padding: clamp(1.3rem, 3.4vw, 2.4rem);
  border-radius: var(--radius-lg);
  background-color: var(--ink-deep);
  color: var(--on-deep);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 162, 74, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 74, 0.09) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-faq .faq-contact > * {
  position: relative;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-faq .faq-contact__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 0.9rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(201, 162, 74, 0.22);
}

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

.page-faq .faq-contact__label {
  flex: 0 0 auto;
  min-width: 4.6rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold-soft);
}

.page-faq .faq-contact__value {
  flex: 1 1 12rem;
  min-width: 0;
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.7;
  color: var(--paper-bright);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__copy {
  flex: 0 0 auto;
}

.page-faq .faq-contact__note {
  margin: 0 0 1.2rem;
  max-width: 42em;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.85;
  color: var(--on-deep-soft);
}

.page-faq .faq-contact__link {
  margin: 0;
}

/* ---------- 版本记录 ---------- */

.page-faq .faq-log {
  list-style: none;
  margin: 0 0 clamp(1.2rem, 3vw, 1.8rem);
  padding: 0;
}

.page-faq .faq-log__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.35rem;
  padding: 1.05rem 0;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-log__item:last-child {
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-log__stamp {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bronze);
}

.page-faq .faq-log__item p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-log__more {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-log__more a {
  color: var(--ink-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-log__more a:hover {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

/* ---------- 响应式 ---------- */

@media (max-width: 560px) {
  .page-faq .faq-entry__summary {
    grid-template-columns: 1.9rem minmax(0, 1fr) 1rem;
    gap: 0.6rem;
    padding: 0.9rem 0.85rem;
  }

  .page-faq .faq-entry__body {
    padding: 0 0.85rem 1.1rem calc(0.85rem + 1.9rem + 0.6rem);
  }

  .page-faq .faq-contact__item {
    gap: 0.3rem 0.6rem;
  }

  .page-faq .faq-contact__label {
    min-width: 100%;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-diff {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-log__item {
    grid-template-columns: 9.5rem minmax(0, 1fr);
    gap: 0.35rem 1.2rem;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-tablet {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 68px minmax(0, 1fr);
    column-gap: clamp(1.6rem, 3vw, 2.6rem);
    align-items: start;
  }

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

  .page-faq .faq-hero__main,
  .page-faq .faq-hero__figure {
    grid-column: 2;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-block__inner {
    grid-template-columns: 76px minmax(0, 1fr);
    column-gap: clamp(1.4rem, 3vw, 2.4rem);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}