.page-faq {
  --faq-cut: 16px;
  --faq-rail-w: 254px;
  --faq-rule: rgba(14, 27, 42, 0.045);
  display: block;
  background-color: var(--paper);
  background-image: linear-gradient(90deg, var(--faq-rule) 0 1px, transparent 1px 100%);
  background-size: 72px 100%;
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-faq .faq-crumb {
  padding: 1rem 0 0.4rem;
}

.page-faq .faq-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-masthead {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-2);
  padding: clamp(2rem, 5.5vw, 3.75rem) 0 clamp(2.25rem, 6vw, 4rem);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, rgba(233, 230, 222, 0.08) 0 1px, transparent 1px 100%);
  background-size: 72px 100%;
}

.page-faq .faq-masthead__inner {
  position: relative;
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: end;
}

.page-faq .faq-masthead__copy h1 {
  margin: 0.7rem 0 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.4vw, 3.3rem);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--paper-2);
  max-width: 19em;
}

.page-faq .faq-masthead__copy .lede {
  margin: 1.1rem 0 0;
  max-width: 46ch;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: rgba(233, 230, 222, 0.78);
}

.page-faq .faq-masthead__fig {
  margin: 0;
  border: 1px solid var(--line-inverse-strong);
  background: var(--hull);
}

.page-faq .faq-masthead__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.72);
}

/* ---------- 两栏骨架 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-top: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  background: var(--paper-2);
  padding: 1.15rem 1.05rem 1.4rem;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-rail__label {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__list li + li {
  border-top: 1px dashed var(--line);
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.62rem 0.35rem 0.62rem 0.5rem;
  border-left: 2px solid transparent;
  color: var(--hull);
  text-decoration: none;
  font-size: 0.94rem;
  line-height: 1.5;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--field);
  border-left-color: var(--field);
  background: rgba(47, 125, 106, 0.07);
}

.page-faq .faq-rail__list a[aria-current="true"] {
  color: var(--field);
  font-weight: 700;
  border-left-color: var(--field);
  background: rgba(47, 125, 106, 0.09);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  flex: 0 0 auto;
}

.page-faq .faq-rail__note {
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-rail__note p {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-rail__note .btn {
  display: inline-block;
  font-size: 0.86rem;
}

/* ---------- 问答区块 ---------- */

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

.page-faq .faq-block + .faq-block {
  margin-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 0.4rem;
  padding-bottom: 0.9rem;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-block__no {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.28rem, 2.6vw, 1.72rem);
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .faq-block__note {
  margin: 0;
  max-width: 54ch;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 1.35rem 0 0.4rem;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-faq .faq-figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-list {
  margin-top: 0.25rem;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background-color 0.2s ease;
}

.page-faq .faq-item[open] {
  background: var(--paper-2);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 1rem 0.9rem;
  cursor: pointer;
  list-style: none;
  font-size: 1.01rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.35;
  color: var(--amber);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2013";
}

.page-faq .faq-item__q:hover {
  color: var(--teal);
}

.page-faq .faq-item__a {
  padding: 0 0.9rem 1.15rem;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--text);
  border-top: 1px dashed var(--line);
  margin: 0 0.9rem;
  padding-top: 0.85rem;
  padding-left: 0;
  padding-right: 0;
}

.page-faq .faq-item__a p {
  margin: 0 0 0.6rem;
}

.page-faq .faq-item__code {
  display: inline-block;
  margin-bottom: 0.5rem;
  padding: 0.08rem 0.4rem;
  border: 1px solid var(--amber);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-item__next {
  margin: 0.7rem 0 0;
  padding-top: 0.6rem;
  border-top: 1px dashed var(--line);
  font-size: 0.84rem;
  color: var(--muted);
}

.page-faq .faq-item__next a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__next a:hover,
.page-faq .faq-item__next a:focus-visible {
  color: var(--field);
}

/* ---------- 结尾联系面板 ---------- */

.page-faq .faq-outro {
  margin-top: clamp(2.75rem, 7vw, 4.5rem);
}

.page-faq .faq-outro__panel {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.6rem, 4.5vw, 3rem);
  background: var(--hull);
  color: var(--paper-2);
  border-left: 4px solid var(--bronze);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-outro__main h2 {
  margin: 0.7rem 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.8vw, 1.9rem);
  line-height: 1.35;
  color: var(--paper-2);
}

.page-faq .faq-outro__main p {
  margin: 0.9rem 0 0;
  max-width: 48ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(233, 230, 222, 0.76);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.page-faq .faq-outro__kv {
  margin: 0;
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.page-faq .faq-outro__kv > div {
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line-inverse);
}

.page-faq .faq-outro__kv dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bronze);
}

.page-faq .faq-outro__kv dd {
  margin: 0.3rem 0 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--paper-2);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */

@media (max-width: 629px) {
  .page-faq {
    background-image: none;
  }

  .page-faq .faq-item__q {
    padding: 0.9rem 0.6rem;
    font-size: 0.97rem;
  }

  .page-faq .faq-item__a {
    margin: 0 0.6rem;
  }

  .page-faq .faq-rail {
    clip-path: none;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-masthead__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
  }

  .page-faq .faq-outro__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-item__q {
    font-size: 1.05rem;
  }
}

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