.page-faq {
  --faq-hair: rgba(0, 240, 255, 0.26);
  --faq-hair-soft: rgba(46, 64, 58, 0.85);
  --faq-index-w: 208px;
  display: block;
}

/* ---------- 面包屑留白 ---------- */
.page-faq .crumbs {
  padding-block: 1.15rem 0.4rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 92% at 88% -6%, rgba(0, 230, 118, 0.18), transparent 62%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-850) 100%);
  padding-block: clamp(2.2rem, 6vw, 4.6rem) clamp(2rem, 5vw, 3.4rem);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -58% 42%;
  height: 128%;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.13), rgba(0, 240, 255, 0) 62%);
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3.2rem);
  align-items: start;
}

.page-faq .faq-hero__lead h1 {
  margin: 0.5rem 0 0;
  font-size: clamp(2.15rem, 5.6vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.06;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 56ch;
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__meta {
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.5rem;
  font-size: 0.86rem;
  color: var(--mist);
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-hero__meta .mono {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--brand);
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-700);
  box-shadow: 0 30px 70px -46px rgba(0, 240, 255, 0.6);
}

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

.page-faq .faq-hero__cap {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
  padding-left: 0.75rem;
  border-left: 2px solid var(--cyan);
}

/* ---------- 主体：索引 + 问答 ---------- */
.page-faq .faq-main {
  background: var(--ink-850);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 3.5vw, 3rem);
}

.page-faq .faq-index {
  display: grid;
  gap: 0.8rem;
  align-content: start;
}

.page-faq .faq-index__title {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-index__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-faq .faq-index__nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--faq-hair-soft);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease,
    background-color var(--t-fast) ease;
}

.page-faq .faq-index__nav a:hover,
.page-faq .faq-index__nav a:focus-visible {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-index__help {
  padding: 0.9rem 1rem;
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(0, 230, 118, 0.16), rgba(0, 240, 255, 0.04));
}

.page-faq .faq-index__help p {
  margin: 0 0 0.35rem;
  font-size: 0.86rem;
  color: var(--paper);
}

.page-faq .faq-body {
  min-width: 0;
}

/* 筛选条 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-filter .filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--mist);
}

/* 区块 */
.page-faq .faq-block {
  scroll-margin-top: 6rem;
  padding-block: clamp(1.8rem, 4vw, 2.9rem);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-block:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no title"
    "no sub";
  column-gap: 0.85rem;
  align-items: baseline;
  margin-bottom: 1.1rem;
}

.page-faq .faq-block__no {
  grid-area: no;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.06em;
}

.page-faq .faq-block__title {
  grid-area: title;
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-block__sub {
  grid-area: sub;
  margin: 0.3rem 0 0;
  font-size: 0.88rem;
  color: var(--mist);
}

/* 折叠问答 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair-soft);
  border-radius: 0;
  background: transparent;
  transition: background-color var(--t-fast) ease;
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-item[open] {
  background: linear-gradient(120deg, rgba(0, 240, 255, 0.07), rgba(0, 230, 118, 0.02));
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 1rem 0.35rem;
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__num {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand);
}

.page-faq .faq-item .fold__body {
  padding: 0 0.35rem 1.2rem 2.15rem;
}

.page-faq .faq-item .fold__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--mist);
}

/* 流程示意 */
.page-faq .faq-flow {
  margin: 1.6rem 0 0;
  padding: 1.1rem 1rem 0.6rem;
  border-radius: var(--r-md);
  background: var(--ink-700);
}

.page-faq .faq-flow__cap {
  margin: 0 0 0.6rem;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-flow__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-flow__box {
  fill: rgba(0, 230, 118, 0.07);
  stroke: rgba(0, 230, 118, 0.45);
  stroke-width: 1.5;
}

.page-faq .faq-flow__box--accent {
  fill: rgba(255, 159, 28, 0.12);
  stroke: rgba(255, 159, 28, 0.65);
}

.page-faq .faq-flow__label {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  fill: var(--paper);
}

.page-faq .faq-flow__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--mist);
}

.page-faq .faq-flow__link {
  stroke: rgba(0, 240, 255, 0.45);
  stroke-width: 2;
}

.page-faq .faq-flow__arrow {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 底部行动 ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(255, 159, 28, 0.2), transparent 58%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
  padding-block: clamp(2.2rem, 5.5vw, 3.6rem);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
}

.page-faq .faq-cta__text h2 {
  margin: 0.5rem 0 0.7rem;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-cta__text p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__text .mono {
  font-family: var(--font-mono);
  color: var(--orange);
  font-weight: 700;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__meta {
    gap: 0.55rem 2.2rem;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6.5rem;
    gap: 1.1rem;
  }

  .page-faq .faq-index__nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.1rem;
  }

  .page-faq .faq-index__nav a {
    justify-content: flex-start;
    width: 100%;
    padding: 0.5rem 0.15rem;
    border: 0;
    border-left: 2px solid var(--faq-hair-soft);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__nav a:hover,
  .page-faq .faq-index__nav a:focus-visible {
    color: var(--cyan);
    background: transparent;
    border-left-color: var(--cyan);
  }
}

@media (min-width: 1200px) {
  .page-faq {
    --faq-index-w: 246px;
  }

  .page-faq .faq-item .fold__body {
    padding-left: 2.6rem;
  }
}

.page-faq {
  --faq-hair: rgba(0, 240, 255, 0.26);
  --faq-hair-soft: rgba(46, 64, 58, 0.9);
  --faq-index-w: 100%;
  display: block;
}

.page-faq .crumbs {
  padding-block: 1rem 0.3rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.6rem, 4.5vw, 3.2rem) clamp(2rem, 5vw, 3.6rem);
  background:
    radial-gradient(110% 90% at 88% 4%, rgba(0, 230, 118, 0.2), transparent 60%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-850) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -14% -52% 38%;
  height: 124%;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.13), transparent 64%);
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 4vw, 2.8rem);
  align-items: start;
}

.page-faq .faq-hero__lead h1 {
  margin: 0.6rem 0 0;
  font-size: clamp(2.1rem, 7vw, 4.1rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.06;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 58ch;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__meta {
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.8rem;
  font-size: 0.86rem;
  color: var(--mist);
}

.page-faq .faq-hero__meta .mono {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--brand);
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-700);
  box-shadow: 0 34px 70px -46px rgba(0, 240, 255, 0.55);
}

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

.page-faq .faq-hero__cap {
  margin: 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--cyan);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-main {
  background: var(--ink-850);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-faq .faq-index {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.page-faq .faq-index__title {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-index__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-faq .faq-index__nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--faq-hair-soft);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.page-faq .faq-index__nav a:hover,
.page-faq .faq-index__nav a:focus-visible {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-index__help {
  padding: 0.9rem 1rem;
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(0, 230, 118, 0.16), rgba(0, 240, 255, 0.04));
}

.page-faq .faq-index__help p {
  margin: 0 0 0.35rem;
  font-size: 0.86rem;
  color: var(--paper);
}

.page-faq .faq-body {
  min-width: 0;
}

/* 筛选条 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding-bottom: 1.1rem;
  margin-bottom: 0.4rem;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-filter .filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--mist);
}

/* 区块 */
.page-faq .faq-block {
  scroll-margin-top: 6rem;
  padding-block: clamp(1.8rem, 4.5vw, 2.9rem);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-block:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-block__head {
  margin-bottom: 1.1rem;
}

.page-faq .faq-block__no {
  display: block;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand);
}

.page-faq .faq-block__title {
  margin: 0.25rem 0 0;
  font-size: clamp(1.35rem, 4.6vw, 1.9rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-block__sub {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--mist);
}

/* 折叠问答 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair-soft);
  border-radius: 0;
  background: transparent;
  transition: background-color var(--t-fast) ease;
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-item[open] {
  background: linear-gradient(120deg, rgba(0, 240, 255, 0.08), rgba(0, 230, 118, 0.02));
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 1rem 0.3rem;
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--brand);
}

.page-faq .faq-item .fold__body {
  padding: 0 0.3rem 1.2rem 2rem;
}

.page-faq .faq-item .fold__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

/* 流程示意 */
.page-faq .faq-flow {
  margin: 1.6rem 0 0;
  padding: 1.1rem 0.9rem 0.5rem;
  border-radius: var(--r-md);
  background: var(--ink-700);
}

.page-faq .faq-flow__cap {
  margin: 0 0 0.6rem;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-flow__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-flow__box {
  fill: rgba(0, 230, 118, 0.07);
  stroke: rgba(0, 230, 118, 0.45);
  stroke-width: 1.5;
}

.page-faq .faq-flow__box--accent {
  fill: rgba(255, 159, 28, 0.12);
  stroke: rgba(255, 159, 28, 0.65);
}

.page-faq .faq-flow__label {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  fill: var(--paper);
}

.page-faq .faq-flow__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--mist);
}

.page-faq .faq-flow__link {
  stroke: rgba(0, 240, 255, 0.45);
  stroke-width: 2;
}

.page-faq .faq-flow__arrow {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 底部行动 ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.2rem, 6vw, 3.6rem);
  background:
    radial-gradient(90% 130% at 10% 0%, rgba(255, 159, 28, 0.22), transparent 58%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
}

.page-faq .faq-cta__text h2 {
  margin: 0.5rem 0 0.7rem;
  font-size: clamp(1.6rem, 5.4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .faq-cta__text p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__text .mono {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1000px) {
  .page-faq {
    --faq-index-w: 232px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6.5rem;
    gap: 1.1rem;
  }

  .page-faq .faq-index__nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.1rem;
  }

  .page-faq .faq-index__nav a {
    width: 100%;
    padding: 0.5rem 0.15rem;
    border: 0;
    border-left: 2px solid var(--faq-hair-soft);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__nav a:hover,
  .page-faq .faq-index__nav a:focus-visible {
    color: var(--cyan);
    background: transparent;
    border-left-color: var(--cyan);
  }

  .page-faq .faq-item .fold__body {
    padding-left: 2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__nav a,
  .page-faq .faq-item {
    transition: none;
  }
}