.page-faq {
  --faq-gap: clamp(16px, 2.4vw, 28px);
  --faq-soft-line: rgba(28, 58, 79, 0.9);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq h1,
.page-faq .faq-h2 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.012em;
  line-height: 1.14;
  margin: 0;
  color: var(--text);
}

.page-faq h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-block: 10px 16px;
}

.page-faq .faq-h2 {
  font-size: clamp(1.35rem, 2.6vw, 2rem);
}

.page-faq .lead {
  color: var(--muted);
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  max-width: 44ch;
  margin: 0 0 18px;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-soft);
  margin: 0;
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-weight: 500;
}

.page-faq .faq-crumbs {
  padding-block: clamp(14px, 2vw, 22px) 0;
  font-size: 0.875rem;
}

.page-faq .faq-crumbs a {
  color: var(--cyan-soft);
  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: var(--cyan);
}

.page-faq .faq-crumbs span[aria-current] {
  color: var(--muted);
}

.page-faq .faq-crumbs span[aria-hidden] {
  color: var(--line);
  margin-inline: 6px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 3.5vw, 40px) clamp(32px, 5vw, 62px);
  border-bottom: var(--frame) solid var(--line);
  background:
    radial-gradient(circle at 84% 14%, rgba(49, 242, 211, 0.16), transparent 56%),
    radial-gradient(circle at 6% 88%, rgba(245, 181, 74, 0.1), transparent 52%),
    linear-gradient(180deg, rgba(11, 39, 64, 0.9), rgba(7, 26, 43, 0.35));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 5px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 15px);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0 0 22px;
  padding: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__meta .mono {
  color: var(--cyan);
  font-size: 0.875rem;
}

.page-faq .faq-hero__figure {
  box-shadow: 8px 8px 0 rgba(4, 18, 31, 0.85);
}

/* 图片外框 */
.page-faq .faq-figure {
  margin: 0;
  border: var(--frame) solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
  min-width: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 9px 14px;
  border-top: var(--frame) solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-index__figure img {
  aspect-ratio: 3 / 2;
}

/* 索引 */
.page-faq .faq-index {
  padding-block: clamp(34px, 5vw, 64px);
}

.page-faq .faq-index__head {
  max-width: 62ch;
}

.page-faq .faq-index__body {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-faq .faq-tiles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  min-width: 0;
}

.page-faq .faq-tile {
  display: flex;
  flex-direction: column;
  gap: 5px;
  height: 100%;
  padding: 16px 18px;
  background: var(--ink-2);
  border: var(--frame) solid var(--line);
  color: var(--text);
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(4, 18, 31, 0.7);
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-tile:hover,
.page-faq .faq-tile:focus-visible {
  border-color: var(--cyan);
  background: #0d2f4a;
  transform: translate(-2px, -2px);
}

.page-faq .faq-tile__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-tile__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.3;
}

.page-faq .faq-tile__desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--muted);
}

/* 主体两栏 */
.page-faq .faq-body {
  padding-block: clamp(30px, 4.5vw, 60px) clamp(40px, 6vw, 76px);
  border-top: var(--frame) solid var(--line);
}

.page-faq .help-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .help-side {
  border: var(--frame) solid var(--line);
  background: var(--ink-2);
  padding: 16px 16px 18px;
  box-shadow: 4px 4px 0 rgba(4, 18, 31, 0.7);
  min-width: 0;
}

.page-faq .help-side__title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-soft);
  margin: 0 0 12px;
}

.page-faq .help-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .help-side__list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .help-side__list a:hover,
.page-faq .help-side__list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(49, 242, 211, 0.09);
}

.page-faq .help-side__list .mono {
  color: var(--muted);
  font-size: 0.8125rem;
}

.page-faq .help-side__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .help-side__note a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber-deep);
}

.page-faq .help-side__note a:hover,
.page-faq .help-side__note a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--amber);
}

.page-faq .help-main {
  min-width: 0;
}

/* 问答组 */
.page-faq .qa-group {
  margin-bottom: clamp(30px, 4vw, 46px);
  scroll-margin-top: 96px;
}

.page-faq .qa-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: var(--frame) solid var(--line);
  margin-bottom: 4px;
}

.page-faq .qa-group__tag {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  border: 1px solid var(--amber-deep);
  border-radius: var(--r-pill);
  padding: 1px 9px;
}

/* 折叠面板 */
.page-faq .qa {
  margin-top: 12px;
  border: var(--frame) solid var(--line);
  background: var(--ink-1);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa[open] {
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  flex: none;
  font-size: 0.8125rem;
  color: var(--cyan-soft);
  padding-top: 0.18em;
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
}

.page-faq .qa__arrow {
  flex: none;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

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

.page-faq .qa__a {
  padding: 2px 16px 18px;
  border-top: 1px solid var(--faq-soft-line);
}

.page-faq .qa__a > p {
  margin: 12px 0 10px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 48ch;
}

.page-faq .qa__steps {
  list-style: none;
  margin: 10px 0 14px;
  padding: 0;
}

.page-faq .qa__steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  font-size: 0.9375rem;
  color: var(--text);
}

.page-faq .qa__steps li:first-child {
  border-top: 0;
}

.page-faq .qa__step-n {
  flex: none;
  min-width: 2rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--cyan);
}

.page-faq .qa__list {
  list-style: none;
  margin: 12px 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 8px 12px;
  border-left: 3px solid var(--line);
  background: rgba(11, 39, 64, 0.75);
  font-size: 0.9rem;
  color: var(--muted);
}

.page-faq .qa__list li:hover {
  border-left-color: var(--amber);
}

.page-faq .qa__list .mono {
  color: var(--text);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.page-faq .qa__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.page-faq .pill {
  display: inline-block;
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--cyan-soft);
  text-decoration: none;
  font-size: 0.8125rem;
  line-height: 1.6;
  transition: border-color 0.16s ease, color 0.16s ease;
}

.page-faq .pill:hover,
.page-faq .pill:focus-visible {
  border-color: var(--cyan);
  color: var(--text);
}

/* 结尾行动区 */
.page-faq .faq-cta {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 4vw, 40px);
  border: var(--frame) solid var(--amber);
  background:
    radial-gradient(circle at 88% 12%, rgba(245, 181, 74, 0.22), transparent 58%),
    linear-gradient(135deg, rgba(11, 39, 64, 0.96), rgba(7, 26, 43, 0.92));
  box-shadow: 8px 8px 0 rgba(4, 18, 31, 0.85);
}

.page-faq .faq-cta .faq-h2 {
  margin-block: 8px 10px;
}

.page-faq .faq-cta p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 50ch;
}

.page-faq .faq-cta .eyebrow {
  color: var(--amber);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

/* 响应式 */
@media (min-width: 620px) {
  .page-faq .faq-tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-faq .qa__q {
    padding: 16px 20px;
  }

  .page-faq .qa__a {
    padding: 2px 20px 22px 58px;
  }

  .page-faq .qa__a > p {
    margin-top: 14px;
  }
}

@media (min-width: 1000px) {
  .page-faq .help-layout {
    grid-template-columns: 258px minmax(0, 1fr);
  }

  .page-faq .help-side {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-index__body {
    grid-template-columns: 1.6fr 1fr;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-tiles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-cta {
    grid-template-columns: 1.5fr 1fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tile,
  .page-faq .qa,
  .page-faq .qa__arrow,
  .page-faq .pill,
  .page-faq .help-side__list a {
    transition: none;
  }

  .page-faq .faq-tile:hover,
  .page-faq .faq-tile:focus-visible {
    transform: none;
  }
}