.page-faq {
  --faq-index-w: 254px;
  --faq-gap: clamp(22px, 4vw, 44px);
  padding-bottom: clamp(48px, 8vw, 110px);
}

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

.page-faq__crumb {
  margin-bottom: clamp(6px, 1.6vw, 14px);
}

.page-faq .breadcrumb {
  margin-top: clamp(8px, 2vw, 18px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
  padding-top: clamp(4px, 1.4vw, 12px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -10% -6% auto -12%;
  height: 78%;
  background: radial-gradient(60% 70% at 22% 30%, rgba(53, 224, 232, 0.14), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 7.4vw, 62px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--ice);
  overflow-wrap: break-word;
}

.page-faq .faq-hero__copy .lede {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 58ch;
  color: var(--mist);
  font-size: clamp(15.5px, 1.7vw, 17px);
  line-height: 1.82;
}

.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  background: linear-gradient(140deg, rgba(12, 44, 69, 0.92), rgba(6, 26, 43, 0.7));
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1;
  color: var(--lime);
  padding-top: 2px;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-step__text strong {
  color: var(--ice);
  font-weight: 700;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-faq .faq-hero__visual {
  display: grid;
  gap: 12px;
}

.page-faq .faq-hero__shot {
  padding: 10px;
  background: rgba(12, 44, 69, 0.5);
}

.page-faq .faq-hero__shot img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero__caption {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--mist);
}

/* ---------- 主题快捷条 ---------- */
.page-faq .faq-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(28px, 4.5vw, 50px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-topic {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  font-size: 13.5px;
  line-height: 1.3;
  text-decoration: none;
  color: var(--ice);
  background: rgba(12, 44, 69, 0.62);
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-topic:hover,
.page-faq .faq-topic:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(53, 224, 232, 0.09);
}

.page-faq .faq-topic--coral {
  border-color: rgba(255, 107, 74, 0.42);
  color: var(--coral);
}

.page-faq .faq-topic--coral:hover,
.page-faq .faq-topic--coral:focus-visible {
  color: var(--coral);
  border-color: var(--coral);
  background: rgba(255, 107, 74, 0.1);
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(28px, 4.5vw, 52px);
}

.page-faq .faq-index {
  padding: 18px 16px 16px;
  background: rgba(12, 44, 69, 0.82);
  border: 1px solid var(--line);
  border-top: 2px solid var(--lime);
  border-radius: 2px;
  align-self: start;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.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: 26px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 8px 6px 8px 4px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--teal);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ice);
  border-left-color: var(--cyan);
  background: rgba(53, 224, 232, 0.08);
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--cyan);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 分组标题 ---------- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-group {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-group__title::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--lime);
  flex: none;
}

.page-faq .faq-group__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), rgba(53, 224, 232, 0));
}

/* ---------- 问答项 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-group .faq-item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item:target {
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 20px 4px 20px 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-item__q h3 {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16.5px, 2.2vw, 21px);
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: -0.005em;
  color: var(--ice);
  overflow-wrap: break-word;
}

.page-faq .faq-item__tag {
  flex: none;
  align-self: center;
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lime);
  transition: transform 0.24s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--coral);
}

.page-faq .faq-item[open] .faq-item__q h3 {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  display: grid;
  gap: 14px;
  padding: 0 0 28px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist);
  overflow-wrap: break-word;
}

.page-faq .faq-item__a p strong {
  color: var(--ice);
}

.page-faq .faq-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: faqflow;
}

.page-faq .faq-flow li {
  position: relative;
  counter-increment: faqflow;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
  overflow-wrap: break-word;
}

.page-faq .faq-flow li::before {
  content: counter(faqflow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  padding: 2px 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.3;
  color: var(--cyan);
  border: 1px solid var(--line);
}

/* 奶油纸答案 */
.page-faq .faq-item--paper .faq-item__a {
  padding: clamp(18px, 2.6vw, 26px);
  margin: 0 0 28px;
  background: var(--paper);
  border-left: 3px solid var(--coral);
  border-radius: 2px;
}

.page-faq .faq-item--paper .faq-item__a p,
.page-faq .faq-item--paper .faq-item__a li {
  color: var(--paper-ink);
}

.page-faq .faq-item--paper .faq-item__a p {
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-item--paper .faq-item__a p strong {
  color: var(--paper-ink);
}

.page-faq .faq-item--paper .faq-flow li::before {
  color: var(--teal);
  border-color: rgba(35, 26, 22, 0.22);
}

.page-faq .faq-item--paper .faq-link {
  color: var(--teal);
  border-bottom-color: rgba(15, 92, 99, 0.45);
}

.page-faq .faq-item--paper .faq-link::after {
  color: var(--coral);
}

.page-faq .faq-link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 12.8px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 232, 0.45);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-link::after {
  content: "→";
  color: var(--lime);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--lime);
  border-bottom-color: rgba(200, 255, 61, 0.6);
}

/* ---------- 中段插图 ---------- */
.page-faq .faq-band {
  margin: clamp(28px, 4.6vw, 48px) 0 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-band__shot {
  position: relative;
  padding: 8px;
  background: rgba(12, 44, 69, 0.55);
  border: 1px solid var(--line);
}

.page-faq .faq-band__shot::after {
  content: "";
  position: absolute;
  inset: 8px;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(53, 224, 232, 0.07) 0,
    rgba(53, 224, 232, 0.07) 1px,
    transparent 1px,
    transparent 4px
  );
}

.page-faq .faq-band__shot img {
  width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-faq .faq-band__cap {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 联系信息 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  background: rgba(53, 224, 232, 0.07);
  border-left: 2px solid var(--coral);
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ice);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__hint {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-hero__visual {
    margin-top: 8px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-item__q {
    padding-right: 8px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-item__a {
    padding-right: clamp(0px, 3vw, 48px);
  }

  .page-faq .faq-item--paper .faq-item__a {
    padding-right: clamp(18px, 2.6vw, 30px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-topic,
  .page-faq .faq-index__link,
  .page-faq .faq-link,
  .page-faq .faq-item__q::after {
    transition: none;
  }
}