.page-faq {
  display: block;
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--section-y) var(--section-y-lg);
  background:
    radial-gradient(120% 90% at 8% 0%, var(--color-highlight) 0%, transparent 56%),
    linear-gradient(158deg, var(--color-primary-soft) 0%, var(--color-surface) 64%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  right: -14%;
  bottom: -30%;
  width: 48%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  transform: rotate(-9deg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0.13;
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--space-6);
}

.page-faq .faq-hero__h1 {
  margin-top: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 16ch;
}

.page-faq .faq-hero__lede {
  margin-top: var(--space-4);
  max-width: 44ch;
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-faq .faq-steps {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding: 0;
  list-style: none;
}

.page-faq .faq-step__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface) 74%, transparent);
  color: var(--color-ink);
  font-weight: var(--weight-heading);
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.page-faq .faq-step__link:hover,
.page-faq .faq-step__link:focus-visible {
  background: var(--color-surface);
  color: var(--color-primary);
  transform: translateX(3px);
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

.page-faq .faq-hero__side {
  display: grid;
  gap: var(--space-4);
}

.page-faq .faq-rail {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-surface) 84%, transparent);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 16%, transparent);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-rail__title {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 2px;
  margin-top: var(--space-2);
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-2);
  align-items: center;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-weight: var(--weight-heading);
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.page-faq .faq-rail__num,
.page-faq .faq-rail__count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.page-faq .faq-rail__num {
  color: var(--color-accent);
}

.page-faq .faq-rail__count {
  color: var(--color-ink-muted);
}

.page-faq .faq-hero__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-hero__cap {
  position: absolute;
  inset: auto 0 0 0;
  margin: 0;
  padding: var(--space-6) var(--space-3) var(--space-3);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.page-faq .faq-hero__figures {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.page-faq .faq-figure {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 70%, transparent);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 14%, transparent);
}

.page-faq .faq-figure .figure__label {
  color: var(--color-ink-soft);
}

/* ===== 问答分组 ===== */
.page-faq .faq-group {
  padding-block: var(--section-y);
}

.page-faq .faq-group--alt {
  background: var(--color-surface-alt);
}

.page-faq .faq-group__inner {
  display: grid;
  gap: var(--space-6);
}

.page-faq .faq-group__head h2 {
  margin-top: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 18ch;
}

.page-faq .faq-group__intro {
  margin-top: var(--space-3);
  max-width: 40ch;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.page-faq .faq-group__media {
  margin-top: var(--space-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .qa-list {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-faq .qa {
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa[open] {
  border-color: color-mix(in srgb, var(--color-primary) 32%, transparent);
  box-shadow: var(--shadow-1);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-2);
  align-items: center;
  padding: var(--space-3);
  list-style: none;
  cursor: pointer;
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  border-radius: var(--radius-md);
  transition: background 0.18s ease, color 0.18s ease;
}

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

.page-faq .qa__q:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.page-faq .qa__qtext {
  font-size: var(--text-base);
  line-height: 1.5;
}

.page-faq .qa__chev {
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(-135deg);
}

.page-faq .qa__a {
  padding: 0 var(--space-3) var(--space-4);
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

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

.page-faq .qa__next {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-3);
  color: var(--color-primary);
  font-weight: var(--weight-heading);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 35%, transparent);
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .qa__next::after {
  content: "→";
  transition: transform 0.18s ease;
}

.page-faq .qa__next:hover,
.page-faq .qa__next:focus-visible {
  color: var(--color-accent);
  border-bottom-color: currentColor;
}

.page-faq .qa__next:hover::after {
  transform: translateX(3px);
}

/* ===== 结尾出口 ===== */
.page-faq .faq-exit {
  position: relative;
  overflow: hidden;
  padding-block: var(--section-y-lg);
  background:
    radial-gradient(90% 130% at 88% 0%, color-mix(in srgb, var(--color-accent) 46%, transparent) 0%, transparent 62%),
    linear-gradient(155deg, var(--color-contrast-surface) 36%, color-mix(in srgb, var(--color-primary) 62%, var(--color-contrast-surface)) 100%);
  color: var(--color-contrast-ink);
}

.page-faq .faq-exit__grid {
  display: grid;
  gap: var(--space-6);
}

.page-faq .faq-exit .marker__num {
  color: var(--color-contrast-accent);
}

.page-faq .faq-exit .marker__text {
  color: var(--color-contrast-ink);
}

.page-faq .faq-exit h2 {
  margin-top: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  max-width: 16ch;
}

.page-faq .faq-exit p {
  max-width: 46ch;
  margin-top: var(--space-3);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
  line-height: 1.75;
}

.page-faq .faq-exit__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.page-faq .faq-contact {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-contrast-ink) 8%, transparent);
  border: var(--border-thin) solid var(--color-contrast-line);
}

.page-faq .faq-contact__key {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-faq .faq-contact__val {
  margin: var(--space-1) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.page-faq .faq-copy {
  margin: var(--space-2) 0 0;
}

.page-faq .copy-btn {
  font: inherit;
  font-size: var(--text-sm);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: transparent;
  color: var(--color-contrast-ink);
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

.page-faq .copy-btn.is-done {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

/* ===== 桌面端 ===== */
@media (min-width: 720px) {
  .page-faq .faq-hero__figures {
    grid-template-columns: 1.15fr 1fr 0.9fr;
    align-items: end;
  }

  .page-faq .qa__a {
    padding-inline-start: calc(var(--space-3) + 2.4em);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--space-4);
  }

  .page-faq .faq-hero__figures {
    grid-column: 1 / -1;
    margin-top: var(--space-4);
    padding-top: var(--space-6);
  }

  .page-faq .faq-group__inner {
    grid-template-columns: minmax(0, 0.68fr) minmax(0, 1.32fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-faq .faq-exit__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: var(--space-8);
    align-items: start;
  }
}