.page-faq {
  --faq-card-bg: var(--night-800);
  --faq-border: 1px solid var(--line);
  --faq-shadow: 5px 5px 0 rgba(0, 0, 0, 0.38);
  background: var(--bg);
  color: var(--text);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-faq .breadcrumb {
  padding-top: 1.35rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 1rem;
  background: var(--night-950);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--cyan) 0 42%,
    var(--orange) 42% 56%,
    var(--night-700) 56% 100%
  );
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 2rem;
  padding-block: clamp(2.2rem, 6vw, 4.2rem);
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-hero__intro {
  margin: 1.15rem 0 0;
  max-width: 46ch;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.75;
}

.page-faq .faq-hero__side {
  background: var(--faq-card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  padding: 1.15rem 1.15rem 1.25rem;
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-hero__side-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 0.95rem 0 1.15rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-quick li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: baseline;
  padding-bottom: 0.7rem;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1.2;
}

.page-faq .faq-quick__text {
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 2.4rem;
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.65rem;
  align-items: baseline;
  padding: 0.58rem 0.7rem;
  border-left: 2px solid transparent;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--warm);
  background: var(--night-800);
  border-left-color: var(--cyan);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mist);
}

.page-faq .faq-index__help {
  margin: 1.35rem 0 0;
  padding: 0.9rem 0.95rem;
  background: var(--night-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.68;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(2.2rem, 5vw, 3.4rem);
  padding-top: 2rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0 0.9rem;
  align-items: center;
}

.page-faq .faq-section__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  opacity: 0.9;
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--warm);
}

.page-faq .faq-section__note {
  grid-column: 2;
  margin: 0.3rem 0 0;
  color: var(--text-dim);
  font-size: 0.87rem;
  line-height: 1.6;
}

.page-faq .faq-section__body {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.35rem;
}

.page-faq .faq-section__qas {
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--night-800);
  box-shadow: var(--faq-shadow);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  background: var(--faq-card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .qa:hover {
  border-left-color: var(--cyan);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  box-shadow: var(--faq-shadow);
}

.page-faq .qa__q {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  list-style: none;
  cursor: pointer;
  color: var(--warm);
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.55;
}

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

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

.page-faq .qa__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.2;
  color: var(--cyan);
  transition: transform var(--t-fast);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2212";
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .qa__a {
  margin-top: 0.15rem;
  padding: 0.85rem 1rem 1.05rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa__a p {
  margin: 0 0 0.6rem;
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.78;
}

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

.page-faq .qa__a .qa__tip {
  margin-top: 0.8rem;
  padding: 0.6rem 0.8rem;
  border-left: 2px solid var(--orange);
  background: rgba(255, 106, 42, 0.07);
  color: var(--text-dim);
  font-size: 0.87rem;
  line-height: 1.7;
}

.page-faq .qa__steps {
  list-style: none;
  counter-reset: step;
  margin: 0.7rem 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .qa__steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2.2rem;
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.72;
}

.page-faq .qa__steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  padding: 1px 4px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.3;
  color: var(--cyan);
}

.page-faq .qa__tags {
  list-style: none;
  margin: 0.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .qa__tags li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: baseline;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}

.page-faq .faq-link:hover {
  color: var(--warm);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-contact {
  margin-top: 1.5rem;
  padding: 1.2rem 1.2rem 1.35rem;
  background: var(--night-800);
  border: 1px solid var(--orange);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-contact__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--warm);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-faq .faq-contact__key {
  flex: 0 0 4.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__value {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--warm);
  font-size: 0.94rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .copy-btn {
  flex: 0 0 auto;
  min-height: 30px;
  padding: 0.28rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 227, 208, 0.08);
}

.page-faq .copy-btn[data-copied="true"] {
  color: var(--green);
  border-color: var(--green);
}

/* ---------- 词典 ---------- */
.page-faq .faq-glossary {
  margin: 1.35rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-glossary__row {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-glossary dt {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-glossary dd {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.72;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-glossary__row {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-section__body--split {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1fr);
    gap: 1.75rem;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.85fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(200px, 236px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
  }
}

@media (max-width: 480px) {
  .page-faq .qa__q {
    font-size: 0.93rem;
    padding: 0.8rem 0.85rem;
  }

  .page-faq .qa__a {
    padding: 0.8rem 0.85rem 1rem;
  }

  .page-faq .faq-contact {
    padding: 1rem 0.95rem 1.15rem;
  }

  .page-faq .faq-contact__key {
    flex: 0 0 100%;
  }
}

.page-faq {
  --faq-card-bg: var(--night-800);
  --faq-border: 1px solid var(--line);
  --faq-shadow: 5px 5px 0 rgba(0, 0, 0, 0.38);
  background: var(--bg);
  color: var(--text);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-faq .breadcrumb {
  padding-top: 1.35rem;
}

.page-faq .faq-hero {
  position: relative;
  margin-top: 1rem;
  background: var(--night-950);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--cyan) 0 42%,
    var(--orange) 42% 56%,
    var(--night-700) 56% 100%
  );
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 2rem;
  padding-block: clamp(2.2rem, 6vw, 4.2rem);
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-hero__intro {
  margin: 1.15rem 0 0;
  max-width: 46ch;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.75;
}

.page-faq .faq-hero__side {
  background: var(--faq-card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  padding: 1.15rem 1.15rem 1.25rem;
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-hero__side-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 0.95rem 0 1.15rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-quick li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: baseline;
  padding-bottom: 0.7rem;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1.2;
}

.page-faq .faq-quick__text {
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}

.page-faq .faq-body {
  display: grid;
  gap: 2.4rem;
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
}

.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.65rem;
  align-items: baseline;
  padding: 0.58rem 0.7rem;
  border-left: 2px solid transparent;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--warm);
  background: var(--night-800);
  border-left-color: var(--cyan);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mist);
}

.page-faq .faq-index__help {
  margin: 1.35rem 0 0;
  padding: 0.9rem 0.95rem;
  background: var(--night-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.68;
}

.page-faq .faq-section {
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(2.2rem, 5vw, 3.4rem);
  padding-top: 2rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0 0.9rem;
  align-items: center;
}

.page-faq .faq-section__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  opacity: 0.9;
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--warm);
}

.page-faq .faq-section__note {
  grid-column: 2;
  margin: 0.3rem 0 0;
  color: var(--text-dim);
  font-size: 0.87rem;
  line-height: 1.6;
}

.page-faq .faq-section__body {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.35rem;
}

.page-faq .faq-section__qas {
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--night-800);
  box-shadow: var(--faq-shadow);
}

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

.page-faq .qa {
  background: var(--faq-card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .qa:hover {
  border-left-color: var(--cyan);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  box-shadow: var(--faq-shadow);
}

.page-faq .qa__q {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  list-style: none;
  cursor: pointer;
  color: var(--warm);
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.55;
}

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

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

.page-faq .qa__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.2;
  color: var(--cyan);
  transition: transform var(--t-fast);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2212";
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .qa__a {
  margin-top: 0.15rem;
  padding: 0.85rem 1rem 1.05rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa__a p {
  margin: 0 0 0.6rem;
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.78;
}

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

.page-faq .qa__a .qa__tip {
  margin-top: 0.8rem;
  padding: 0.6rem 0.8rem;
  border-left: 2px solid var(--orange);
  background: rgba(255, 106, 42, 0.07);
  color: var(--text-dim);
  font-size: 0.87rem;
  line-height: 1.7;
}

.page-faq .qa__steps {
  list-style: none;
  counter-reset: step;
  margin: 0.7rem 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .qa__steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2.2rem;
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.72;
}

.page-faq .qa__steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  padding: 1px 4px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.3;
  color: var(--cyan);
}

.page-faq .qa__tags {
  list-style: none;
  margin: 0.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .qa__tags li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: baseline;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}

.page-faq .faq-link:hover {
  color: var(--warm);
}

.page-faq .faq-contact {
  margin-top: 1.5rem;
  padding: 1.2rem 1.2rem 1.35rem;
  background: var(--night-800);
  border: 1px solid var(--orange);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-contact__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--warm);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-faq .faq-contact__key {
  flex: 0 0 4.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__value {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--warm);
  font-size: 0.94rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .copy-btn {
  flex: 0 0 auto;
  min-height: 30px;
  padding: 0.28rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 227, 208, 0.08);
}

.page-faq .copy-btn[data-copied="true"] {
  color: var(--green);
  border-color: var(--green);
}

.page-faq .faq-glossary {
  margin: 1.35rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-glossary__row {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-glossary dt {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-glossary dd {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.72;
}

@media (min-width: 720px) {
  .page-faq .faq-glossary__row {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-section__body--split {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1fr);
    gap: 1.75rem;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.85fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(200px, 236px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
  }
}

@media (max-width: 480px) {
  .page-faq .qa__q {
    font-size: 0.93rem;
    padding: 0.8rem 0.85rem;
  }

  .page-faq .qa__a {
    padding: 0.8rem 0.85rem 1rem;
  }

  .page-faq .faq-contact {
    padding: 1rem 0.95rem 1.15rem;
  }

  .page-faq .faq-contact__key {
    flex: 0 0 100%;
  }
}