.page-faq {
  --faq-muted: #5A6E85;
  --faq-line: #DCE3EC;
  background: var(--paper);
  color: var(--text-ink);
  overflow-x: hidden;
}

.page-faq .bw-breadcrumb { margin-bottom: clamp(16px, 3vw, 26px); }

.page-faq .bw-breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted-dark);
}

.page-faq .bw-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--navy-line);
}

.page-faq .bw-breadcrumb a {
  color: var(--text-muted-dark);
  text-decoration: none;
}

.page-faq .bw-breadcrumb a:hover { color: var(--aqua-live); }

.page-faq .bw-breadcrumb [aria-current="page"] { color: var(--aqua-live); }

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 6vw, 64px) 0 clamp(30px, 6vw, 64px);
  background: var(--ink-navy);
  color: var(--text-inverse);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(34, 56, 78, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 56, 78, 0.5) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.55;
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: var(--bw-fs-h1);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-faq .faq-hero__intro {
  margin: clamp(14px, 2.4vw, 20px) 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
  color: rgba(242, 246, 250, 0.82);
}

.page-faq .faq-hero__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted-dark);
}

.page-faq .faq-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--aqua-live);
  box-shadow: 0 0 0 4px rgba(46, 196, 182, 0.18);
  animation: faqPulse 2.4s ease-in-out infinite;
  flex: none;
}

@keyframes faqPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.page-faq .faq-quick {
  background: var(--navy-raised);
  border: 1px solid var(--navy-line);
  border-radius: var(--bw-radius);
  padding: clamp(16px, 2.4vw, 22px);
}

.page-faq .faq-quick__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua-live);
}

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

.page-faq .faq-quick__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--navy-line);
  color: var(--text-inverse);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.4;
  transition: color 0.18s var(--bw-ease);
}

.page-faq .faq-quick__list li:last-child .faq-quick__link { border-bottom: 0; padding-bottom: 2px; }
.page-faq .faq-quick__link span { color: var(--text-muted-dark); transition: transform 0.18s var(--bw-ease), color 0.18s var(--bw-ease); }
.page-faq .faq-quick__link:hover { color: var(--brand-red); }
.page-faq .faq-quick__link:hover span { color: var(--brand-red); transform: translateX(3px); }

.page-faq .faq-index {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--navy-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-inverse);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.18s var(--bw-ease), background 0.18s var(--bw-ease);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--aqua-live);
}

.page-faq .faq-index__link:hover {
  border-color: var(--aqua-live);
  background: rgba(46, 196, 182, 0.12);
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-section { padding: clamp(38px, 7vw, 84px) 0; }
.page-faq .faq-section + .faq-section { border-top: 1px solid var(--faq-line); }
.page-faq .faq-section--plain { background: #FFFFFF; }
.page-faq .faq-section--band { background: var(--paper-deep); }
.page-faq .faq-section--dark {
  background: var(--ink-navy);
  color: var(--text-inverse);
  border-top-color: var(--navy-line);
}

.page-faq .faq-head {
  display: grid;
  gap: 10px;
  max-width: 66ch;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-faq .bw-title { margin: 0; }

.page-faq .faq-section--dark .bw-lead { color: rgba(242, 246, 250, 0.78); }

/* ---------- 折叠问答 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa {
  --qa-no: 2.5rem;
  --qa-pad: 16px;
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  border-radius: var(--bw-radius);
  transition: border-color 0.18s var(--bw-ease), box-shadow 0.18s var(--bw-ease);
}

.page-faq .qa:hover { border-color: #C4D0DF; }

.page-faq .qa[open] {
  border-color: #B9C7D8;
  box-shadow: 0 20px 44px -36px rgba(11, 27, 43, 0.85);
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: var(--qa-no) minmax(0, 1fr) 1.5rem;
  align-items: center;
  gap: 12px;
  padding: var(--qa-pad) 18px;
  cursor: pointer;
  list-style: none;
}

.page-faq .qa summary::-webkit-details-marker { display: none; }
.page-faq .qa summary::marker { content: ""; }

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-muted);
  transition: color 0.18s var(--bw-ease);
}

.page-faq .qa[open] .qa__no { color: var(--brand-red); }

.page-faq .qa__q {
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-ink);
}

.page-faq .qa__mark {
  position: relative;
  width: 16px;
  height: 16px;
  justify-self: end;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  border-radius: 1px;
  background: var(--faq-muted);
  transition: transform 0.22s var(--bw-ease), background 0.22s var(--bw-ease);
}

.page-faq .qa__mark::before { left: 0; top: 7px; width: 16px; height: 2px; }
.page-faq .qa__mark::after { left: 7px; top: 0; width: 2px; height: 16px; transform-origin: center; }

.page-faq .qa[open] .qa__mark::before { background: var(--brand-red); }
.page-faq .qa[open] .qa__mark::after { transform: scaleY(0); background: var(--brand-red); }

.page-faq .qa__body { padding: 0 18px 18px; }

.page-faq .qa__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: #2A3B4E;
}

/* ---------- 双栏 ---------- */

.page-faq .faq-cols {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure { margin: 0; }

.page-faq .faq-figure .bw-figure__media {
  border: 1px solid var(--navy-line);
  border-radius: var(--bw-radius);
  overflow: hidden;
  background: var(--ink-navy);
}

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

.page-faq .faq-figure .bw-figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--faq-muted);
}

/* ---------- 下一步说明牌 ---------- */

.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 32px);
  padding: clamp(16px, 2.6vw, 24px) clamp(18px, 3vw, 28px);
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--brand-red);
  border-radius: var(--bw-radius);
}

.page-faq .faq-next__k {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-red);
}

.page-faq .faq-next__t {
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-ink);
}

.page-faq .faq-next--dark {
  background: var(--navy-raised);
  border-color: var(--navy-line);
  border-left-color: var(--aqua-live);
}

.page-faq .faq-next--dark .faq-next__k { color: var(--aqua-live); }
.page-faq .faq-next--dark .faq-next__t { color: var(--text-inverse); }

/* ---------- 深色章内的折叠条目 ---------- */

.page-faq .faq-section--dark .qa {
  background: var(--navy-raised);
  border-color: var(--navy-line);
}

.page-faq .faq-section--dark .qa:hover { border-color: #33506C; }
.page-faq .faq-section--dark .qa[open] { border-color: #3C5C7C; box-shadow: none; }
.page-faq .faq-section--dark .qa__q { color: var(--text-inverse); }
.page-faq .faq-section--dark .qa__no { color: var(--text-muted-dark); }
.page-faq .faq-section--dark .qa[open] .qa__no { color: var(--aqua-live); }
.page-faq .faq-section--dark .qa__body p { color: rgba(242, 246, 250, 0.8); }
.page-faq .faq-section--dark .qa__mark::before,
.page-faq .faq-section--dark .qa__mark::after { background: var(--text-muted-dark); }
.page-faq .faq-section--dark .qa[open] .qa__mark::before { background: var(--aqua-live); }
.page-faq .faq-section--dark .qa[open] .qa__mark::after { background: var(--aqua-live); }

/* ---------- 联络卡 ---------- */

.page-faq .faq-contactcard {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(22px, 4vw, 44px);
  background: var(--ink-navy);
  color: var(--text-inverse);
  border-radius: calc(var(--bw-radius) + 4px);
}

.page-faq .faq-contactcard__note {
  margin: 0 0 clamp(16px, 2.6vw, 24px);
  font-size: 15px;
  line-height: 1.78;
  color: rgba(242, 246, 250, 0.82);
}

.page-faq .faq-contactlist {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
}

.page-faq .faq-contactlist .bw-plate__item {
  display: grid;
  gap: 5px;
  padding: 13px 0;
  border-bottom: 1px solid var(--navy-line);
}

.page-faq .faq-contactlist .bw-plate__item:last-child { border-bottom: 0; padding-bottom: 0; }

.page-faq .faq-contactlist dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-muted-dark);
}

.page-faq .faq-contactlist dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-inverse);
  overflow-wrap: anywhere;
}

.page-faq .faq-footnote {
  margin: clamp(18px, 3vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-muted);
  max-width: 62ch;
}

.page-faq .faq-footnote .bw-link { color: var(--brand-red); font-weight: 700; }

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .qa__body { padding-left: calc(18px + var(--qa-no) + 12px); }
  .page-faq .qa-list--wide { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-faq .qa-list--wide > li:first-child { grid-column: 1 / -1; }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

  .page-faq .faq-cols {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(28px, 3.4vw, 52px);
  }

  .page-faq .faq-contactcard {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-index { margin-top: clamp(28px, 3.6vw, 44px); }
}

@media (min-width: 1080px) {
  .page-faq .qa-list--wide { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-faq .qa-list--wide > li:first-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__dot { animation: none; }
  .page-faq .qa,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-quick__link,
  .page-faq .faq-quick__link span,
  .page-faq .faq-index__link { transition: none; }
  .page-faq .faq-quick__link:hover span { transform: none; }
}