.page-faq {
  --faq-aside-w: 264px;
  --faq-gap: clamp(20px, 3.2vw, 46px);
  --faq-block-gap: clamp(14px, 2vw, 22px);
  display: block;
  width: 100%;
  overflow-x: clip;
  background:
    radial-gradient(1100px 580px at 10% -6%, rgba(47, 107, 224, .22), transparent 62%),
    radial-gradient(880px 520px at 92% 4%, rgba(15, 163, 127, .13), transparent 60%),
    var(--night);
  color: var(--cream);
  font-family: var(--font-body);
  line-height: 1.9;
  padding-bottom: clamp(40px, 6vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 62px) 0 clamp(22px, 4vw, 46px);
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    repeating-linear-gradient(45deg, rgba(201, 212, 240, .06) 0 1px, transparent 1px 16px),
    repeating-linear-gradient(-45deg, rgba(201, 212, 240, .06) 0 1px, transparent 1px 16px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 78%);
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: .8rem;
  font-family: var(--font-mono);
  color: var(--mist);
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--cream);
  border-bottom-color: var(--gold);
}

.page-faq .breadcrumb span[aria-hidden] {
  color: var(--cobalt-bright);
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 12px;
}

.page-faq h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.75rem, 4.6vw, 3.1rem);
  line-height: 1.28;
  letter-spacing: -.02em;
  color: var(--cream);
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 20ch;
}

.page-faq .faq-lede {
  max-width: 66ch;
  color: var(--mist);
  font-size: clamp(.95rem, 1.6vw, 1.05rem);
  margin: 0;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: clamp(18px, 2.6vw, 30px) 0 0;
  padding: 0;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  padding: 6px 13px;
  border: 1px solid var(--line-dark-2);
  border-radius: 999px;
  background: rgba(14, 22, 51, .6);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--cream);
  border-color: var(--cobalt-bright);
  background: rgba(47, 107, 224, .24);
}

/* ---------- 章节分组 ---------- */
.page-faq .faq-group {
  position: relative;
  padding: clamp(32px, 5vw, 68px) 0;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-group:nth-of-type(even) {
  background: linear-gradient(180deg, rgba(14, 22, 51, .55), rgba(7, 11, 31, 0));
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(12px, 1.8vw, 20px);
  border-bottom: 2px solid var(--cobalt);
}

.page-faq .band-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.5;
  color: var(--night);
  background: var(--gold);
  border-radius: var(--radius-s);
  padding: 3px 10px;
}

.page-faq .faq-group-head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.9vw, 2.1rem);
  line-height: 1.35;
  letter-spacing: -.02em;
  color: var(--cream);
  margin: 0 0 8px;
}

.page-faq .faq-group-lede {
  max-width: 64ch;
  margin: 0;
  color: var(--mist);
  font-size: .95rem;
}

/* ---------- 主内容 + 旁注 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

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

.page-faq .faq-aside {
  min-width: 0;
  border-top: 2px solid var(--cobalt-bright);
  border-left: 0;
  padding: 14px 0 0;
  font-size: .85rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-aside-title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
}

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

/* ---------- 图像 ---------- */
.page-faq .faq-figure {
  margin: 0 0 var(--faq-block-gap);
  border: 1px solid var(--line-cream);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: linear-gradient(155deg, rgba(27, 58, 143, .5), rgba(14, 22, 51, .94));
  box-shadow: var(--shadow-paper);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-figure--icons {
  max-width: 420px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line-cream);
  border-radius: var(--radius-m);
  background: rgba(14, 22, 51, .82);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-dark-2);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: rgba(232, 179, 74, .46);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: -.01em;
  color: var(--cream);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--cobalt-bright);
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-q:hover::after {
  color: var(--neon);
}

.page-faq .faq-a {
  padding: 0 18px 18px;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--mist);
}

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

.page-faq .faq-a p + .faq-steps {
  margin-top: 10px;
}

.page-faq .faq-a a {
  color: var(--cobalt-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 107, 224, .5);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 40px;
  min-height: 26px;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .03em;
  color: var(--night);
  background: var(--gold);
  border-radius: var(--radius-s);
  padding: 2px 6px;
}

/* ---------- 字段对照表 ---------- */
.page-faq .faq-fields {
  border: 1px solid var(--line-cream);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: rgba(14, 22, 51, .82);
  margin-bottom: var(--faq-block-gap);
}

.page-faq .faq-fields-caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--gold);
  background: rgba(27, 58, 143, .42);
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-fields table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}

.page-faq .faq-fields th {
  text-align: left;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--mist);
  background: rgba(27, 58, 143, .28);
  border-bottom: 1px solid var(--line-dark-2);
}

.page-faq .faq-fields td {
  padding: 11px 14px;
  vertical-align: top;
  line-height: 1.75;
  color: var(--mist);
  border-top: 1px solid var(--line-dark);
  transition: background-color var(--t-fast) var(--ease);
}

.page-faq .faq-fields tbody tr:first-child td {
  border-top: 0;
}

.page-faq .faq-fields tbody tr:hover td {
  background: rgba(47, 107, 224, .16);
}

.page-faq .faq-field-key {
  font-family: var(--font-mono);
  font-size: .84rem;
  color: var(--cream);
  white-space: nowrap;
}

/* ---------- 结尾入口 ---------- */
.page-faq .faq-next {
  padding: clamp(34px, 5vw, 66px) 0 0;
}

.page-faq .faq-next-inner {
  display: grid;
  gap: clamp(18px, 2.6vw, 30px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line-cream);
  border-radius: var(--radius-l);
  background:
    linear-gradient(140deg, rgba(27, 58, 143, .55), rgba(14, 22, 51, .92) 62%),
    var(--paper-deep);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-next-inner h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.5vw, 1.8rem);
  line-height: 1.35;
  letter-spacing: -.02em;
  color: var(--cream);
  margin: 0 0 10px;
}

.page-faq .faq-next-inner p {
  max-width: 62ch;
  margin: 0;
  color: var(--mist);
  font-size: .94rem;
}

.page-faq .faq-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-next-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-aside-w);
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    border-top: 0;
    border-left: 2px solid var(--cobalt-bright);
    padding: 4px 0 4px 18px;
  }
}

@media (max-width: 639px) {
  .page-faq .faq-fields {
    border: 0;
    background: transparent;
  }

  .page-faq .faq-fields-caption {
    border-radius: var(--radius-s);
  }

  .page-faq .faq-fields table,
  .page-faq .faq-fields tbody,
  .page-faq .faq-fields tr,
  .page-faq .faq-fields td {
    display: block;
    width: 100%;
  }

  .page-faq .faq-fields thead {
    display: none;
  }

  .page-faq .faq-fields tr {
    border: 1px solid var(--line-cream);
    border-radius: var(--radius-m);
    background: rgba(14, 22, 51, .82);
    padding: 12px 14px;
    margin-bottom: 10px;
  }

  .page-faq .faq-fields td {
    border-top: 0;
    padding: 0;
  }

  .page-faq .faq-fields td + td {
    margin-top: 6px;
  }

  .page-faq .faq-field-key {
    white-space: normal;
    display: inline-block;
    font-weight: 700;
    color: var(--gold);
    font-size: .8rem;
    letter-spacing: .04em;
  }

  .page-faq .faq-fields tbody tr:hover td {
    background: transparent;
  }

  .page-faq h1 {
    max-width: none;
  }

  .page-faq .faq-jump {
    gap: 6px;
  }

  .page-faq .faq-jump a {
    font-size: .74rem;
    padding: 5px 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-jump a,
  .page-faq .faq-a a,
  .page-faq .faq-fields td,
  .page-faq .breadcrumb a {
    transition: none;
  }

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