.page-faq {
  background: var(--deep);
  color: var(--hilight);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .faq-hero-wrap {
  position: relative;
  padding: 18px 0 60px;
  background:
    radial-gradient(circle at 86% 6%, rgba(31, 217, 208, 0.18), transparent 58%),
    linear-gradient(180deg, var(--deep) 0%, var(--midnight) 100%);
}

.page-faq .faq-hero-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(31, 217, 208, 0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31, 217, 208, 0.10) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.55;
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

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

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

.page-faq .faq-hero {
  display: grid;
  gap: 32px;
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.2vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: #ffffff;
  overflow-wrap: break-word;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 50ch;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--hilight);
  opacity: 0.86;
}

.page-faq .faq-jumps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jumps a {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px solid rgba(184, 255, 249, 0.32);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--hilight);
  text-decoration: none;
  transition: border-color var(--t-fast) ease, color var(--t-fast) ease, background var(--t-fast) ease;
}

.page-faq .faq-jumps a:hover,
.page-faq .faq-jumps a:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(255, 161, 58, 0.12);
}

.page-faq .faq-hero-fig {
  margin: 0;
}

.page-faq .faq-hero-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(31, 217, 208, 0.45);
  border-radius: var(--radius-m);
  object-fit: cover;
}

.page-faq .fig-cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 纸面问答区 ---------- */
.page-faq .faq-main {
  background: var(--cream);
  color: var(--ink);
  border-top: 3px solid var(--amber);
  padding: 40px 0 74px;
}

.page-faq .faq-grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-rail {
  border: 1px solid var(--ink);
  border-radius: var(--radius-s);
  background: var(--paper-2);
  padding: 16px 14px 14px;
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-rail-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  opacity: 0.62;
}

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

.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 6px;
  border-bottom: 1px solid rgba(36, 27, 23, 0.16);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 700;
  transition: color var(--t-fast) ease, padding-left var(--t-fast) ease;
}

.page-faq .faq-rail-list li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--ember);
  padding-left: 12px;
}

.page-faq .faq-rail-list .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--ember);
}

.page-faq .faq-rail-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(36, 27, 23, 0.28);
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(36, 27, 23, 0.72);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 88px;
}

.page-faq .faq-section + .faq-section {
  margin-top: 44px;
}

.page-faq .faq-section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num title"
    "num sub";
  align-items: end;
  gap: 4px 16px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 20px;
}

.page-faq .faq-section-num {
  grid-area: num;
  align-self: start;
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: 30px;
  line-height: 1;
  color: var(--ember);
}

.page-faq .faq-section-head h2 {
  grid-area: title;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-section-sub {
  grid-area: sub;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(36, 27, 23, 0.7);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--ink);
  border-radius: var(--radius-s);
  background: var(--cream);
  box-shadow: var(--shadow-paper);
  overflow: hidden;
  transition: box-shadow var(--t-fast) ease;
}

.page-faq .faq-item summary {
  position: relative;
  display: block;
  padding: 14px 46px 14px 16px;
  list-style: none;
  cursor: pointer;
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.55;
  transition: background var(--t-fast) ease, color var(--t-fast) ease;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--ember);
}

.page-faq .faq-item summary:hover {
  background: rgba(231, 215, 194, 1);
  color: var(--deep);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: -3px;
}

.page-faq .faq-item[open] summary {
  background: var(--deep);
  color: var(--hilight);
  border-bottom: 1px solid var(--ink);
}

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

.page-faq .faq-a {
  padding: 14px 16px 18px;
  border-left: 2px solid var(--neon);
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-verdict {
  font-weight: 700;
  color: var(--deep);
  padding-left: 10px;
  border-left: 3px solid var(--amber);
}

.page-faq .faq-a ol,
.page-faq .faq-a ul {
  margin: 8px 0 0;
  padding-left: 1.25em;
  display: grid;
  gap: 5px;
}

.page-faq .faq-a li {
  line-height: 1.68;
}

.page-faq .faq-inline-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--neon);
  font-weight: 700;
  margin-right: 6px;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

.page-faq .faq-path-fig {
  margin: 22px 0 0;
}

.page-faq .faq-path-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--ink);
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-paper);
  object-fit: cover;
}

/* ---------- 底部行动块 ---------- */
.page-faq .faq-cta {
  margin-top: 48px;
  padding: 26px 22px;
  border: 1px solid var(--ink);
  border-left: 6px solid var(--amber);
  border-radius: var(--radius-s);
  background: var(--paper-2);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-cta-kicker {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ember);
}

.page-faq .faq-cta h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1.28;
  color: var(--ink);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(36, 27, 23, 0.82);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-wrap {
    padding: 22px 0 76px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
    gap: 40px;
  }

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

  .page-faq .faq-main {
    padding: 52px 0 88px;
  }

  .page-faq .faq-cta {
    padding: 32px 30px;
  }

  .page-faq .faq-section-head h2 {
    font-size: 1.5rem;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-grid {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

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

  .page-faq .faq-section + .faq-section {
    margin-top: 56px;
  }

  .page-faq .faq-cta {
    margin-top: 60px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-jumps a,
  .page-faq .faq-rail-list a {
    transition: none;
  }
}