.page-faq {
  --faq-rail-w: 272px;
  --faq-accent-line: rgba(53, 214, 224, 0.34);
  display: block;
  padding-bottom: clamp(3rem, 8vw, 6rem);
  overflow-x: clip;
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2.5rem) 0 clamp(1.75rem, 4vw, 3rem);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 52% at 84% 6%, rgba(53, 214, 224, 0.17), transparent 70%),
    linear-gradient(122deg, rgba(227, 178, 90, 0.13) 0%, rgba(227, 178, 90, 0) 48%);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 0 100%);
  pointer-events: none;
}

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

.page-faq .faq-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.5vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0.75rem 0 0;
  max-width: 18ch;
}

.page-faq .faq-lede {
  margin: 1rem 0 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: clamp(0.9688rem, 2.1vw, 1.0625rem);
  line-height: 1.85;
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2.25rem;
  margin: 1.75rem 0 0;
  padding: 1.125rem 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  min-width: 0;
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.125rem, 3vw, 1.375rem);
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-stat:nth-child(2) .faq-stat-num {
  color: var(--gold);
}

.page-faq .faq-stat-label {
  font-size: 0.8125rem;
  color: var(--muted-dim);
  letter-spacing: 0.02em;
}

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4.5vw, 2.75rem);
  align-items: start;
  margin-top: clamp(1rem, 3vw, 1.75rem);
}

/* 左侧场景目录 */
.page-faq .faq-rail {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(14, 21, 38, 0.92), rgba(7, 11, 24, 0.74));
  padding: 1.25rem 1.125rem 1.375rem;
}

.page-faq .rail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-dim);
}

.page-faq .rail-list {
  list-style: none;
  margin: 0.875rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.page-faq .rail-link {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  padding: 0.5625rem 0.625rem;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9375rem;
  line-height: 1.5;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  background: rgba(53, 214, 224, 0.09);
  border-left-color: var(--cyan);
  color: var(--paper);
  outline: none;
}

.page-faq .rail-index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .rail-figure {
  margin: 1.25rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.page-faq .rail-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  object-fit: cover;
}

/* 右侧题组 */
.page-faq .faq-groups {
  min-width: 0;
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 6.5rem;
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--line-strong);
}

.page-faq .group-head {
  position: relative;
  padding-left: 2.75rem;
}

.page-faq .group-num {
  position: absolute;
  left: 0;
  top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .group-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.4375rem, 4vw, 1.9375rem);
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--text);
}

.page-faq .group-note {
  margin: 0.5rem 0 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.78;
}

.page-faq .entry-figure {
  margin: 1.25rem 0 0;
}

.page-faq .entry-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  object-fit: cover;
}

.page-faq .qa-list {
  margin-top: 1.125rem;
  display: grid;
  gap: 0.5rem;
}

.page-faq .qa-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(14, 21, 38, 0.88), rgba(14, 21, 38, 0.6));
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .qa-item:hover {
  border-color: var(--line-strong);
}

.page-faq .qa-item[open] {
  border-color: var(--faq-accent-line);
  background: linear-gradient(180deg, rgba(27, 36, 56, 0.88), rgba(14, 21, 38, 0.9));
}

.page-faq .qa-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9375rem 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-size: 0.9688rem;
  font-weight: 500;
  line-height: 1.6;
}

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

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}

.page-faq .qa-plus {
  position: relative;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
}

.page-faq .qa-plus::before,
.page-faq .qa-plus::after {
  content: "";
  position: absolute;
  background: var(--gold);
  border-radius: 1px;
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .qa-plus::before {
  top: 6.5px;
  left: 0;
  width: 15px;
  height: 2px;
}

.page-faq .qa-plus::after {
  left: 6.5px;
  top: 0;
  width: 2px;
  height: 15px;
}

.page-faq .qa-item[open] .qa-plus::before {
  background: var(--cyan);
}

.page-faq .qa-item[open] .qa-plus::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 1rem 1.125rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.82;
}

.page-faq .qa-a p {
  margin: 0;
}

.page-faq .qa-a p + p {
  margin-top: 0.625rem;
}

.page-faq .qa-a ul {
  margin: 0.625rem 0 0;
  padding-left: 1.15rem;
}

.page-faq .qa-a li + li {
  margin-top: 0.3125rem;
}

.page-faq .qa-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 224, 0.4);
  transition: border-color 0.2s var(--ease);
}

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

/* 自查三步 */
.page-faq .faq-check {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: clamp(1.5rem, 4vw, 2.25rem);
  border-top: 1px solid var(--line-strong);
}

.page-faq .check-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.4375rem, 4vw, 1.9375rem);
  line-height: 1.28;
  color: var(--text);
}

.page-faq .check-lede {
  margin: 0.625rem 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .check-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .check-item {
  min-width: 0;
  padding: 1.125rem 1.125rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 21, 38, 0.72);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .check-item:hover {
  border-color: rgba(227, 178, 90, 0.42);
}

.page-faq .check-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .check-item h3 {
  margin: 0.4375rem 0 0.375rem;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .check-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.78;
}

/* 提交面板 */
.page-faq .submit-panel {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--faq-accent-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(70% 120% at 0% 0%, rgba(18, 168, 184, 0.22), transparent 62%),
    linear-gradient(135deg, rgba(11, 124, 140, 0.34), rgba(14, 21, 38, 0.94) 62%);
  overflow: hidden;
}

.page-faq .submit-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.375rem, 4vw, 1.875rem);
  line-height: 1.28;
  color: var(--text);
}

.page-faq .submit-lede {
  margin: 0.625rem 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .submit-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 1.625rem;
}

.page-faq .submit-col {
  min-width: 0;
}

.page-faq .submit-col h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .submit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .submit-list li {
  position: relative;
  padding-left: 1.125rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-faq .submit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-faq .submit-contact {
  display: grid;
  gap: 0.5rem;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(53, 214, 224, 0.24);
}

.page-faq .submit-contact p {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.625rem;
}

.page-faq .contact-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--muted-dim);
}

.page-faq .submit-contact a {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 217, 160, 0.34);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .submit-contact a:hover,
.page-faq .submit-contact a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-faq .submit-contact .contact-note {
  display: block;
  margin-top: 0.375rem;
  color: var(--muted-dim);
  font-size: 0.8125rem;
  line-height: 1.7;
}

@media (min-width: 640px) {
  .page-faq .submit-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
  }

  .page-faq .check-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .check-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .rail-link,
  .page-faq .qa-item,
  .page-faq .qa-plus::before,
  .page-faq .qa-plus::after,
  .page-faq .check-item,
  .page-faq .submit-contact a {
    transition: none;
  }
}