.page-faq {
  --faq-line: rgba(168, 218, 220, 0.22);
  --faq-shadow: 0 20px 38px -28px rgba(7, 30, 43, 0.95);
  --faq-ink-soft: rgba(7, 30, 43, 0.86);
  position: relative;
  display: block;
  font-family: var(--font-body);
  color: var(--text);
  background-color: var(--deep-green);
  background-image:
    radial-gradient(880px 520px at 92% -8%, rgba(79, 209, 197, 0.18), transparent 62%),
    radial-gradient(720px 520px at 2% 8%, rgba(11, 79, 108, 0.6), transparent 64%),
    linear-gradient(180deg, #0F3D3E 0%, #0B2E33 48%, #071E2B 100%);
  overflow-x: clip;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-top: clamp(1.25rem, 4vw, 2.5rem);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-crumbs a {
  color: var(--shallow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: currentColor;
}

.page-faq .faq-masthead {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  padding-block: clamp(1.75rem, 5vw, 3rem) clamp(1.75rem, 5vw, 2.75rem);
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-masthead__text {
  display: grid;
  gap: 0.9rem;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-masthead__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.35rem, 8.5vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-masthead__lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(0.98rem, 2.3vw, 1.08rem);
  line-height: 1.78;
  color: var(--text-soft);
}

.page-faq .faq-masthead__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-masthead__media {
  margin: 0;
  border: 1px solid rgba(168, 218, 220, 0.3);
  background: var(--navy);
  box-shadow: 10px 10px 0 rgba(79, 209, 197, 0.14), 20px 20px 0 rgba(255, 138, 61, 0.08);
}

.page-faq .media {
  position: relative;
  overflow: hidden;
}

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

.page-faq .media__caption {
  display: block;
  padding: 0.6rem 0.85rem;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  background: rgba(7, 30, 43, 0.72);
  border-top: 1px solid rgba(168, 218, 220, 0.2);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: clamp(2rem, 5vw, 3.25rem);
}

/* ---- 左侧目录 ---- */
.page-faq .faq-rail {
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, rgba(11, 79, 108, 0.72), rgba(7, 30, 43, 0.62));
  padding: 1rem;
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-rail__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-rail__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid transparent;
  border-left: 2px solid rgba(79, 209, 197, 0.42);
  background: rgba(7, 30, 43, 0.42);
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.35;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: rgba(79, 209, 197, 0.14);
  border-left-color: var(--orange);
  color: var(--paper);
  transform: translateX(2px);
  outline: none;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--orange);
}

.page-faq .faq-rail__note {
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--faq-line);
  font-size: 0.8rem;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-faq .faq-rail__note p {
  margin: 0;
}

.page-faq .faq-rail__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 197, 0.4);
}

.page-faq .faq-rail__note a:hover {
  color: var(--orange);
  border-bottom-color: currentColor;
}

/* ---- 右侧问答 ---- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  min-width: 0;
}

.page-faq .faq-section {
  min-width: 0;
  scroll-margin-top: 7.5rem;
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.3rem 0.8rem;
  align-items: baseline;
  padding-bottom: 0.85rem;
  margin-bottom: 1.1rem;
  border-bottom: 2px solid rgba(79, 209, 197, 0.3);
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.35rem, 3.6vw, 1.85rem);
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-section__note {
  grid-column: 2;
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--text-dim);
}

.page-faq .faq-list {
  display: grid;
  gap: 0.65rem;
}

.page-faq .faq-item {
  background: var(--paper);
  color: var(--navy);
  border: 1px solid rgba(7, 30, 43, 0.18);
  border-left: 3px solid var(--river);
  box-shadow: 4px 4px 0 rgba(11, 79, 108, 0.32);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item:hover {
  transform: translateY(-1px);
  box-shadow: 6px 6px 0 rgba(11, 79, 108, 0.36);
}

.page-faq .faq-item[open] {
  border-left-color: var(--orange);
  box-shadow: 6px 6px 0 rgba(255, 138, 61, 0.34);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.65rem;
  align-items: start;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

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

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

.page-faq .faq-item[open] > .faq-item__summary {
  background: linear-gradient(90deg, rgba(11, 79, 108, 0.13), rgba(79, 209, 197, 0.06));
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--river);
  padding-top: 0.28rem;
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--orange);
}

.page-faq .faq-item__q {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--navy);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 0.9rem;
  height: 0.9rem;
  margin-top: 0.42rem;
  color: var(--river);
  flex: none;
}

.page-faq .faq-item__mark::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: currentColor;
  transform: translateY(-50%);
}

.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: currentColor;
  transform: translateX(-50%);
  transition: opacity 0.18s ease;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--orange);
}

.page-faq .faq-item__body {
  padding: 0.95rem 1.1rem 1.2rem;
  border-top: 1px dashed rgba(7, 30, 43, 0.2);
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

.page-faq .faq-item__body > p {
  margin: 0;
}

.page-faq .faq-item__body > p + p,
.page-faq .faq-item__body > p + ol,
.page-faq .faq-item__body > ol + p,
.page-faq .faq-item__body > ol + div,
.page-faq .faq-item__body > div + p {
  margin-top: 0.65rem;
}

.page-faq .faq-item__body a {
  color: var(--river);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 79, 108, 0.4);
}

.page-faq .faq-item__body a:hover {
  color: var(--orange);
  border-bottom-color: currentColor;
}

.page-faq .faq-steps {
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.55rem;
  align-items: start;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.5;
  padding: 0.05rem 0.34rem;
  color: var(--river);
  background: rgba(79, 209, 197, 0.18);
  border: 1px solid rgba(11, 79, 108, 0.24);
}

.page-faq .faq-path {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin-top: 0.95rem;
}

.page-faq .faq-section__media {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  border: 1px solid rgba(168, 218, 220, 0.28);
  background: var(--navy);
  box-shadow: 8px 8px 0 rgba(79, 209, 197, 0.12);
}

.page-faq .faq-contact {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.9rem;
  padding: 0.9rem 1rem;
  background: linear-gradient(135deg, rgba(11, 79, 108, 0.1), rgba(79, 209, 197, 0.1));
  border: 1px solid rgba(11, 79, 108, 0.22);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
  font-size: 0.86rem;
  line-height: 1.6;
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--river);
}

.page-faq .faq-contact__val {
  color: var(--navy);
  word-break: break-word;
}

@media (min-width: 720px) {
  .page-faq .faq-masthead {
    grid-template-columns: 1.08fr 0.92fr;
    align-items: center;
  }

  .page-faq .faq-rail__nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-item__q {
    font-size: 1.04rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(230px, 274px) minmax(0, 1fr);
    gap: clamp(2rem, 4.5vw, 3.75rem);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 7.5rem;
  }

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

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

  .page-faq .faq-section__note {
    grid-column: 3;
    max-width: 24ch;
    text-align: right;
  }

  .page-faq .faq-item__body {
    padding: 1.05rem 1.35rem 1.35rem;
  }
}

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

  .page-faq .faq-item:hover,
  .page-faq .faq-rail__link:hover {
    transform: none;
  }
}